Reading System

Abstract

To provide a read-aloud system which reads aloud at optimum timing and appropriately determines read-aloud priority order when two or more types of parameters simultaneously vary.SOLUTION: A read-aloud system 1 comprises: a critical parameter input unit 2 for inputting a critical parameter Pc; a critical parameter selection unit 3 for selecting a selected critical parameter Pc1 from the Pc; an action level discrimination unit 4 for outputting an action level discrimination result; an important event data input judgment unit 5 for outputting an important event judgment result; an important equipment start / trip data input judgment unit 6 for outputting an important equipment start / trip event judgment result; a first priority order determination unit 10 for determining read-aloud first priority order regarding the Pc1, the action level discrimination result or the like, and creates read-aloud data D2; and an output unit 12 for outputting a read-aloud voice Dv of the read-aloud data D2.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a reading system capable of reading out a reading voice corresponding to input data installed in a plant, and in particular to a reading system capable of controlling the reading order based on a preset reading priority when multiple types of input data are input. [Background technology]

[0002] Conventionally, in nuclear power plants, when an abnormal transient change or a design basis accident occurs in the plant, operators in the central control room immediately respond to the plant trouble in multiple positions, including the shift supervisor. The multiple positions include the director, reactor operator, turbine electric operator, and auxiliary equipment operator. In detail, under the supervision of the shift supervisor, the supervisor gives instructions and orders to each operator, and each operator operates the equipment switches and gives instructions to other operators using the operating procedures based on the plant status report and instructions and orders from the supervisor. In addition, while responding to an accident, operators monitor plant parameters that indicate the plant's status and perform the necessary operations, but continuous monitoring is particularly required for important parameters that affect the decision to shut down the plant by automatic or manual scram or the success or failure of the plant's cold shutdown. These parameters are specifically called "critical parameters." Because critical parameters have a significant impact on plant operations, the commander designates operators responsible for monitoring the critical parameters as owners, and the owners determine and read out the appropriate values, units, frequency / intervals, and trends.

[0003] However, the conventional method of the owner reading out critical parameters required the conductor to designate the operator in charge of reading out the parameters, designate the critical parameters, and then set the interval for reading out and the action level that triggers the operation of the equipment before reading out the parameters, which placed a great burden on the conductor. In addition, the designated owner had to pay attention to many things while performing his / her own operations, receiving and repeating instructions and orders from the conductor, and continuously monitoring and reading out the critical parameters, which also placed a great burden on the conductor. In addition, when reading out the parameters, it was necessary to be careful about the volume, tone and frequency of the voice so as not to interfere with reports from other operators or instructions and orders from the conductor, and the need for such ingenuity further increased the burden on the conductor. In addition to the critical parameters, operators also judge whether the automatic and manual scrams, which are the emergency shutdown actions of the reactor, have been successful, whether the turbine generator has been tripped, and whether the plant's on-site power supply is normal or abnormal, and these are determined by combining the status of multiple pieces of equipment. These events are hereafter referred to as "important events." Operators judge whether an important event has been successful or not based on the operating procedures, but even experienced operators take a considerable amount of time to do so.

[0004] In addition, there is equipment operation information that has a significant impact on plant operation, such as events in which an operating device suddenly trips without any change in plant parameters, or automatic start / stop of the device by interlock due to a change in plant parameters. From here on, this will be referred to as "important equipment start / trip data," and this important equipment start / trip data is also determined by the operator from the control panel, who makes a comprehensive judgment on the success or failure of the start / trip based on the start of the operating device, the system status such as the valve configuration, and the indicated values ​​such as pressure, flow rate, temperature, and water level. As with important events, judging the success or failure of such a start / trip takes a considerable amount of time even for an experienced operator.

[0005] The critical parameters include target values ​​such as an interlock activation value, an operator's manual operation trigger level, a parameter control level, an emergency notification reference level, a parameter limit value level, etc. Hereinafter, these target values ​​are referred to as "action levels". The action level is set by the operator referring to the alarm manual, reading and memorizing it, and when the critical parameter is read out and approaches the action level, the operator is notified that the action level has been reached. However, because there are a wide variety of critical parameters, announcing the action level from memory is a heavy burden and may depend on the operator's level of proficiency. In addition, if each operator reads out such critical parameters, important event data, important equipment startup / top data, and action level data in an unorderly manner, it may have a negative effect on communication between operators, or may act as noise in the judgment of the conductor and other operators who receive the data. In other words, in the past, there was an issue that the data was not read out at the appropriate time required by the user. In recent years, therefore, technology has been developed for a text-to-speech device that can perform text-to-speech at a convenient time in response to a user's request, and inventions relating to this have already been disclosed.

[0006] Patent Document 1 discloses an invention entitled "Data Readout Device" that reads out plant information aloud to inform users. The invention disclosed in Patent Document 1 will be described below. The invention disclosed in Patent Document 1 includes a data processing unit that inputs and processes process data, and a voice output unit that creates read-out data based on the process data processed by the data processing unit and request information from a user of the read-out data, and outputs the read-out data to the outside, the data processing unit includes process data processing means that imports process data and attributes corresponding to the request information from the user, and data evaluation means that performs evaluation to control the data transmission cycle of the process data and attributes imported by the process data processing means based on a predetermined change condition of the plant state, the voice output unit includes read-out data creation means that creates read-out data based on the process data and attributes when data is sent at a transmission cycle controlled by the data processing unit, and control means that controls the output timing of the read-out data created by the read-out data creation means to the outside, and the data evaluation means includes either a means for comparing a reference value of the process data change rate provided for each process data with a change rate of the corresponding process data, evaluating the process data according to the comparison result, and controlling the data transmission cycle, or a means for evaluating the process data according to a deviation between a preset value and the process data value, and controlling the data transmission cycle. In the invention having such characteristics, voice data is generated based on process data corresponding to the change state of the plant, and the voice data is controlled and output at a timing that is easy for the user to understand. Therefore, the information required by the user can be transmitted by voice at the right timing. In addition, when the plant is experiencing a sudden change, the data evaluation means can shorten the data transmission period in order to quickly read out the change in the process data, while when the plant is stable, the data transmission period can be lengthened. Therefore, the data required by the user can be read out at the right timing according to the plant state. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] JP 2000-122718 A Summary of the Invention [Problem to be solved by the invention]

[0008] However, when the plant condition is suddenly changed, if the data transmission period is shortened to quickly read out the change value of the corresponding process data, as described above, noise is likely to occur when receiving the read-out during actual accident response. Therefore, the invention disclosed in Patent Document 1 may not fully solve the conventional problems. In addition, Patent Document 1 discloses a method of reading out only a specific single parameter or two types of parameters, so that it is considered difficult to appropriately determine the priority order of reading out when more than two types of parameters fluctuate simultaneously due to complex changes in the plant state.

[0009] The present invention has been made in response to such conventional circumstances, and aims to provide a system that can perform reading at the optimal timing and can appropriately determine the priority of reading even when two or more types of parameters fluctuate simultaneously. [Means for solving the problem]

[0010] In order to achieve the above object, a first invention is a reading system capable of reading out a reading voice Dv corresponding to input data D1, the input data D1 being capable of including, as input data types, critical parameters Pc, important event data Ps relating to important events, and important equipment start-up / trip data Pe relating to important equipment start-up / trip events, the reading system including a critical parameter input unit to which the critical parameters Pc are input, a critical parameter selection unit to select at least one of the input critical parameters Pc and output a selected critical parameter Pc1, an action level database storing a preset action level Pca for the critical parameters Pc, comparing and discriminating between the selected critical parameter Pc1 and the action level Pca and outputting an action level discrimination result, and an action level discrimination unit to which important event data Ps is input, discriminating a status of the important event from the input important event data Ps, and outputting an action level discrimination result. the important device start-up / trip data input judgment unit receiving the important device start-up / trip data Pe, judging the status of the important device start-up / trip event from the input important device start-up / trip data Pe, and outputting the important device start-up / trip event judgment result; a first element data input unit receiving first element data De1 that can include a selected critical parameter Pc1, an action level judgment result, an important event judgment result, and an important device start-up / trip event judgment result as first elements; a first priority decision unit determining a first priority for the reading of the first element transmitted from the first element data input unit based on a first priority between the input data type and the action level Pca; a read-out data priority control unit including a read-out data creation unit that arranges the first elements in accordance with the determined first priority and creates read-out data D2; and an output unit that outputs a read-out voice Dv for the created read-out data D2.

[0011] In the invention configured as above, the critical parameter Pc includes one or more types of parameters. Similarly, the important event data Ps related to the important event and the important equipment start / trip data Pe related to the important equipment start / trip event each include one or more types of data. Furthermore, "the input data D1 may include critical parameters Pc, important event data Ps, and important equipment start-up / trip data Pe," means that the critical parameters Pc, important event data Ps, and important equipment start-up / trip data Pe do not all have to be included in the input data D1 at the same time, and may each be input independently with a time interval between them. Furthermore, "input data type" refers to the type of input data classified according to the nature of the input data, and does not refer to the individual values ​​of the critical parameter Pc, important event data Ps, and important equipment start-up / trip data Pe.

[0012] In the invention having the above configuration, when multiple types of input data D1 are input, this input data D1 is processed and output in the critical parameter selection unit, the action level discrimination unit, the important event data input determination unit, and the important equipment start-up / trip data input determination unit, respectively. Of these outputs, the selected critical parameters Pc1, which are the output of the critical parameter selection section, are appropriately selected so that all of the critical parameters Pc input to the input data D1 are not read out. Moreover, the action level discrimination result which is the output of the action level discriminating section is the value of the selected critical parameter Pc1 which is discriminated to be equal to or higher than the action level among the selected critical parameters Pc1.

[0013] Next, the important event judgment result, which is the output of the important event data input judgment unit, is a signal indicating the operating state of the plant when it is judged that an important event has occurred in the plant. In addition, the value of the important event data Ps at the time when the important event judgment is made may be used as the important event judgment result. Furthermore, the important equipment startup / trip event judgment result, which is the output of the important equipment startup / trip data input judgment unit, is a signal indicating the state of important equipment when it is judged that an important equipment startup / trip has occurred in the important equipment constituting the plant. In addition, the value of the important equipment startup / trip data Pe at the time when the judgment is made may be used as the important equipment startup / trip judgment result. These selected critical parameter Pc1, action level discrimination result, important event discrimination result, and important device startup / trip event discrimination result are all input to the first element data input unit of the readout data priority control unit as first element data De1 that can be included as a first element. In other words, the "first element" means the value of the selected critical parameter Pc1, the value of the action level discrimination result, the signal that is the important event discrimination result, and the signal that is the important device startup / trip event discrimination result.

[0014] Next, the first element data input unit transmits the first element to the first priority determination unit. In the first priority determination unit, the first priority among the input data types, that is, the critical parameter Pc, the important event data Ps, and the important equipment start-up / trip data Pe are classified according to their properties, and the first priority of the first element that may be included in the first element data De1 is determined based on the order of high priority to low priority. As described above, the "first element" is the output value of the selected critical parameter Pc1, the output signal of the important event judgment result, etc. Also, the "first priority" reflects the magnitude of the influence on the plant operation. Furthermore, in the read-aloud data creation section of the read-aloud data priority control section, the first elements are rearranged according to the first priority and created as read-aloud data D2. The output section receives the created read-aloud data D2, converts the read-aloud data D2 into read-aloud voice Dv, and outputs it. Therefore, the operator can hear the value of the selected critical parameter Pc1, the action level determination result, and the like, which are determined in accordance with the first priority order, as audio.

[0015] The second invention is characterized in that, in the first invention, the critical parameter selection unit includes a critical parameter memory unit that stores the critical parameter Pc input to the critical parameter input unit, a trend determination unit that compares the latest critical parameter Pcn among the stored critical parameters Pc with the previous critical parameter Pcp among the stored critical parameters Pc that was stored immediately before the latest critical parameter Pcn was stored, and determines an upward or downward trend of the latest critical parameter Pcn relative to the previous critical parameter Pcp, and a read-out critical parameter setting unit that sets a read-out critical parameter Pcn1 corresponding to the latest critical parameter Pcn based on the determined upward trend and a predetermined read-out interval for the critical parameter Pc, and outputs this read-out critical parameter Pcn1 as the selected critical parameter Pc1.

[0016] In the invention having such a configuration, in addition to the function of the first invention, the trend determination section of the critical parameter selection section determines whether the value of the latest critical parameter Pcn is on an upward trend or a downward trend by comparing it with the value of the immediately preceding critical parameter Pcp stored in the critical parameter storage section. This determination is made, for example, based on the sign of (Pcn-Pcp). That is, when (Pcn-Pcp) is a positive number, it is determined that the latest critical parameter Pcn is on an upward trend, and when (Pcn-Pcp) is a negative number, it is determined that the latest critical parameter Pcn is on a downward trend. The readout critical parameter setting unit sets a readout critical parameter Pcn1 to be read out next from the current point in time based on the upward or downward trend of the latest critical parameter Pcn recognized by the trend recognition unit and a preset readout interval for the critical parameter Pc. The readout interval is set to the value of the critical parameter Pc, and it is desirable that this set value be the maximum value within the range in which an abnormality in the plant operation can occur.

[0017] The third invention is characterized in that, in the first or second invention, the action level discrimination unit determines whether the selected critical parameter Pc1 is on the unsafe side based on the action level Pca, and if the selected critical parameter Pc1 is on the unsafe side, outputs the selected critical parameter Pc1 as the action level discrimination result.

[0018] In an invention having such a configuration, in addition to the action of the first or second invention, when the selected critical parameter Pc1 is on the unsafe side, the value of the selected critical parameter Pc1 is output as an action level discrimination result and input to the readout data priority control unit as part of the first element data De1.

[0019] A fourth invention is characterized in that, in any one of the first to third inventions, the important event data input judgment unit judges whether or not the important event data Ps satisfies a preset important event occurrence condition, and outputs an important event judgment result if the important event data Ps is satisfied, and the important device start-up / trip data input judgment unit judges whether or not the important device start-up / trip data Pe satisfies a preset important device start-up / trip event occurrence condition, and outputs an important device start-up / trip event judgment result if the important device start-up / trip event occurrence condition is satisfied.

[0020] In the invention configured as above, the important event occurrence condition is a condition for determining whether or not an important event has occurred based on the important event data Ps, and the important device start / trip event occurrence condition is a condition for determining whether or not an important event has occurred based on the important device start / trip data Pe. In the invention having the above configuration, in addition to the action of any one of the first to third inventions, when the important event data Ps satisfies the important event occurrence condition, an important event occurrence signal corresponding to the important event occurrence condition is output as a important event judgment result. In addition, when the important equipment start-up / trip data Pe satisfies the important equipment start-up / trip event occurrence condition, an important equipment start-up / trip occurrence signal corresponding to the important equipment start-up / trip event occurrence condition is output as an important equipment start-up / trip event judgment result.

[0021] The fifth invention is characterized in that, in any of the first to fourth inventions, it further comprises an input blocking unit interposed between the critical parameter selection unit and the first element data input unit, and the input blocking unit blocks a competing selected critical parameter Pc1C, which is in conflict with the action level discrimination result, from being input to the first element data input unit within a predetermined time after the action level discrimination result is output.

[0022] In an invention having such a configuration, in addition to the action of any one of the first to fourth inventions, the competing selection critical parameter Pc1C is prevented from being input into the first element data input section, so that the action level discrimination result is read out in preference to the competing selection critical parameter Pc1C.

[0023] A sixth invention is characterized in that in any of the first to fifth inventions, in the first priority determination unit, the first priority is set to important event data Ps, important equipment start / trip data Pe, action level Pca, and selected critical parameter Pc1, in that order from high priority to low priority, and when a higher-level result including at least any one of an important event judgment result, an important equipment start / trip event judgment result, and an action level discrimination result is newly transmitted from the first element data input unit after the first priority has been determined for the first element data De1 including at least the selected critical parameter Pc1 as a first element, the first priority determination unit changes the first priority to a new first priority in which the selected critical parameter Pc1 is arranged lower than the higher-level result.

[0024] In an invention having such a configuration, in addition to the action of any of the first to fifth inventions, for example, when only the selected critical parameter Pc1 is transmitted from the first element data input unit to the first priority determination unit, and a first priority has already been determined with the selected critical parameter Pc1 as the first priority, when at least one of the top results is transmitted to the first priority determination unit, this first priority determination unit demotes the selected critical parameter Pc1, which is in first place, to the bottom and determines that the newly transmitted top result will be ranked higher than the selected critical parameter Pc1. Therefore, when an important event, an important equipment startup / trip event, or a selection critical parameter Pc1 that exceeds the action level occurs, the order of reading out is flexibly determined so that reading out of these events is started with priority over selection critical parameters Pc1 that do not reach the action level. When the input of the top results to the readout data priority control unit is interrupted and a predetermined time has elapsed, the ranking of the selected critical parameter Pc1 in the first priority order is raised to its original position.

[0025] The seventh invention is characterized in that, in any one of the first to sixth inventions, the critical parameter Pc can include an important parameter CPs related to an important event, an important device start-up / trip parameter CPe related to an important device start-up / trip event, and an action level parameter CPa related to an action level Pca as critical parameter types, the first priority order determination unit has a second priority order determination unit, the second priority order determination unit receives second element data De2 which can include selected critical parameters Pc1 for the important parameter CPs, the important device start-up / trip parameter CPe, and the action level parameter CPa as second elements, and determines a second priority order for the reading out of the second element based on the second priority between the critical parameter types, and the reading out data creation unit creates reading out data D2 by arranging the first elements and the second elements according to the first priority order and the second priority order, respectively.

[0026] A critical parameter Pc can include multiple lower-level critical parameters simultaneously or independently at time intervals. Some lower-level critical parameters may cause important events or important equipment start-up / trip events when they fluctuate. Specifically, there are important parameters CPs, important equipment start-up / trip parameters CPe, and action level parameters CPa as lower-level critical parameters. These lower-level critical parameters may fluctuate simultaneously due to the occurrence of accident events (e.g., loss of external power due to earthquakes or power outages on power transmission lines) or simultaneous multiple failures. In such cases, if the fluctuating critical parameter values ​​of many different types and multiple priorities are read out in a disorderly manner, the attention of the operators may be distracted. Therefore, the critical parameters Pc are classified according to whether they relate to important events, important equipment start-up / trip events, or action levels, and the order of reading out for each classified type of critical parameter is determined, which meets the demand for a more accurate understanding of the plant operating status.

[0027] In order to solve such problems, in the invention having the above configuration, in addition to the function of any one of the first to sixth inventions, the second priority order determination unit determines the second priority order for the reading of the second element in consideration of the second priority order between the critical parameter types. Also, the "second priority order" reflects the magnitude of the influence on the plant operation, similar to the "first priority order." Then, the read-aloud data generator arranges the first element and the second element to generate read-aloud data D2. Note that since the first priority is higher than the second priority, for example, the important parameter CPs included in the critical parameter Pc is not arranged higher than the important event data Ps in the read-aloud data D2.

[0028] An eighth invention is characterized in that, in the seventh invention, the critical parameter input unit receives parameter data Pd relating to a critical parameter type, the first priority order determination unit includes a priority order estimation unit instead of the second priority order determination unit, the priority order estimation unit includes a learning model storage unit that stores a learning model trained using teacher data that receives the parameter data Pd and outputs a third priority order for reading out a critical parameter type corresponding to the parameter data Pd, and an estimation unit that inputs the parameter data Pd to the learning model and estimates the third priority order corresponding to the parameter data Pd, the parameter data Pd including at least the number of occurrences N1 for each critical parameter type for a competing critical parameter PcC that competes with the important event data Ps and the important device startup / trip data Pe, among the critical parameters Pc, and the read-out data creation unit creates the read-out data D2 by arranging the first elements and the critical parameter types in accordance with the first priority order and the third priority order that replaces the second priority order.

[0029] In the invention having such a configuration, in addition to the action of the seventh invention, the priority estimation unit estimates a third priority for the reading out of the changed second element based on a learning model that has been learned in advance. Furthermore, the parameter data Pd input to the teacher data for estimating the third priority may include, in addition to the aforementioned number of occurrences N1, the rate of increase in the number of occurrences N1 per certain period of time and the importance reflecting the magnitude of the impact of the competing critical parameter PcC on plant operation. Therefore, even in the case of multiple simultaneous accidents that cause many types and multiple priorities of important parameters CPs, important equipment start-up / trip parameters CPe, and action level parameters CPa to fluctuate, the priority order estimation unit can read out these in the optimal order.

[0030] The ninth invention is characterized in that, in any one of the first to eighth inventions, the output unit includes a text data creation unit that creates text data Dt from the reading data D2, an audio data creation unit that creates audio data Ds from the created text data Dt, and a reading output unit that outputs the created audio data Ds as at least a reading audio Dv.

[0031] In an invention having such a configuration, in addition to the action of any of the inventions described in any of 1 to 8, the text data creation unit creates the text data Dt, for example, by searching a text data file in which multiple pieces of text data Dt corresponding to the multiple types of content that the reading data D2 may contain are stored, and extracting from the text data file the text data Dt that corresponds to the content of the reading data D2 created by the reading data creation unit. Similarly, in the voice data creation unit, the voice data Ds is created, for example, by searching for a voice data file in which multiple voice data Ds corresponding to multiple types of content that the text data Dt may contain are stored, and extracting from the file the voice data Ds that corresponds to the content of the text data Dt extracted by the text data creation unit. The read-aloud output unit outputs the created voice data Ds as read-aloud voice Dv, and may also output it as light information, for example.

[0032] A tenth aspect of the present invention is the same as the ninth aspect of the present invention, in which the text data Dt is assigned an output destination number for identifying one or more types of output destinations, and the text data creation unit includes a text data file in which a plurality of types of text data Dt corresponding to a plurality of types of read-aloud data D2 are stored in advance, a text data extraction unit that searches for and extracts text data Dt corresponding to the read-aloud data D2 from the text data file, and a text data creation unit that creates one or more assigned text data Dt1 by assigning the extracted text data Dt to one or more types of output destination numbers, and creates one or more assigned text data Dt1 as voice data. The voice data creation unit includes a sorting processing unit which outputs the sorted voice data Ds1 to the adjusted voice output unit, the read-out output unit includes one or more voice synthesis processing units respectively corresponding to one or more output destination numbers, the voice data creation unit creates one or more sorted voice data Ds1 respectively corresponding to the one or more sorted text data Dt1, and sorts and outputs the one or more sorted voice data Ds1 to the one or more voice synthesis processing units, the voice synthesis processing unit outputs the one or more sorted voice data Ds1 to the adjusted voice output unit, and the adjusted voice output unit outputs the sorted voice data Ds1 as read-out voice Dv.

[0033] In the invention having such a configuration, in addition to the action of the ninth invention, one or more sorted text data Dt1 sorted for each output destination number by the sorting processing unit are each created as one or more sorted voice data Ds1 by the voice data creation unit. Furthermore, in the case where the reading output unit includes, for example, two voice synthesis processing units, the sorted voice data Ds1 is output as the reading voice Dv in each voice synthesis processing unit.

[0034] The eleventh invention is of 2The invention is characterized in that it includes a critical parameter filter unit interposed between the critical parameter selection unit and the readout data priority control unit, and when the critical parameter filter unit determines based on the latest critical parameter Pcn, the previous critical parameter Pcp, and the action level Pca output from the action level discrimination unit that the latest critical parameter Pcn is closer to the action level Pca than the previous critical parameter Pcp, it outputs the latest critical parameter Pcn and the selected critical parameter Pc1 output by the critical parameter selection unit to the readout data priority control unit.

[0035] In the invention having such a configuration, of 2 In addition to the effects of the invention, for example, when the latest critical parameter Pcn has not reached the action level Pca and |Pcn-Pca|<|Pcp-Pca|, it is determined that the latest critical parameter Pcn is approaching the action level Pca, i.e., the latest critical parameter Pcn is moving toward the unsafe side. Then, only when it is determined that the latest critical parameter Pcn is shifting to the unsafe side, the selected critical parameter Pc1 output from the critical parameter selection unit is output to the readout data priority control unit via the critical parameter filter unit. Note that the latest critical parameter Pcn determined to be shifting to the unsafe side is also output to the readout data priority control unit via the critical parameter filter unit. Therefore, the critical parameter filter unit prevents the latest critical parameter Pcn from shifting to the unsafe side, and therefore prevents the selected critical parameter Pc1, for which no safety precautions are required, from being read out frequently.

[0036] A twelfth aspect of the present invention is the eleventh aspect of the present invention, wherein the critical parameter input unit receives, in addition to the critical parameter Pc, associated data Pcd relating to the critical parameter Pc, and includes a read-out data sentence creation unit interposed between the critical parameter filter unit and the read-out data priority control unit, and the read-out data sentence creation unit includes a read-out critical parameter storage unit, a read-out critical parameter trend determination unit, a read-out data sentence decision unit, and a read-out data sentence synthesis unit, and the read-out critical parameter storage unit sequentially stores a plurality of selected critical parameters Pc1 outputted from the critical parameter filter unit at intervals and a plurality of associated data Pcd respectively associated with the plurality of selected critical parameters Pc1, and the read-out critical parameter trend determination unit stores a preceding preceding selected critical parameter Pc11 constituting the plurality of selected critical parameters Pc1. and based on the subsequent selection critical parameter Pc12 and related data Pcd respectively related to the preceding selection critical parameter Pc11 and the subsequent selection critical parameter Pc12, an upward or downward trend of the subsequent selection critical parameter Pc12 relative to the preceding selection critical parameter Pc11 is determined, and the read-out data sentence determination unit determines a read-out data sentence corresponding to the determined upward or downward trend of the subsequent selection critical parameter Pc12, and the read-out data sentence synthesis unit synthesizes a synthetic read-out data sentence including at least the subsequent selection critical parameter Pc12 and the determined read-out data sentence, and outputs this synthesized synthetic read-out data sentence to the read-out data priority control unit, and the related data Pcd is the output timing T1 and value V1 of the preceding selection critical parameter Pc11 and the output timing T2 and value V2 of the subsequent selection critical parameter Pc12.

[0037] In an invention having such a configuration, in addition to the function of the 11th invention, the readout critical parameter trend determination unit determines an upward or downward trend of the subsequently selected critical parameter Pc12 based on the related data Pcd, for example, by calculating the deviation time (T2-T1), the deviation value (V2 / V1), and the slope of the values ​​V1 and V2 within the deviation time (T2-T1). In this case, for example, if the deviation time is within 1 minute and the deviation value is 1 or less, the readout data sentence determination unit determines to output the readout data sentence and set its content as "rapidly decreasing". Also, if the deviation time is between 1 minute and 5 minutes and the deviation value exceeds 1, the readout data sentence determination unit determines to output the readout data sentence and set its content as "slowly increasing". Note that the deviation value may be calculated by [(V2-V1) / (T2-T1)] in addition to (V2 / V1). In addition, if the deviation time exceeds, for example, five minutes, the read-out data sentence determination unit may not output the read-out data sentence regardless of the deviation value.

[0038] Next, in the read-out data sentence synthesis unit, a synthetic read-out data sentence meaning, for example, "Reactor water level (physical quantity represented by the subsequently selected critical parameter Pc12), 800 (value V2), mm (unit of physical quantity represented by the subsequently selected critical parameter Pc12), slowly descending (read-out data sentence)" is synthesized from the previously selected critical parameter Pc11 or the subsequently selected critical parameter Pc12 and the determined read-out data sentence, etc. It should be noted that the synthetic read-out data sentences are not converted into text data, and among these, for example, if the critical parameter Pc has a data format that includes these, and if the selected critical parameter Pc1 inherits this data format, then "reactor water level" and "mm" can be extracted from the subsequent selected critical parameter Pc12. Therefore, a synthesized speech data sentence indicating whether the subsequently selected critical parameter Pc12 is on an upward or downward trend and its speed is output to the speech data priority control section. Effect of the Invention

[0039] According to the first invention, a read-out voice Dv is output for read-out data D2 that may include the selected critical parameter Pc1, the action level judgment result, the important event judgment result, and the important equipment start-up / trip event judgment result, so that the operator can grasp in detail the operating state of the plant not only under normal conditions but also under abnormal conditions. Furthermore, the critical parameter selection unit appropriately selects the critical parameters Pc input in the input data D1 so that not all of the critical parameters Pc are read out, so that it is possible to prevent the critical parameters Pc from being read out in a random manner. In addition, the readout data priority control unit determines the readout order of critical parameters Pc, etc. based on the first priority between input data types, so that the readout priority order can be appropriately determined even when more than two types of parameters vary simultaneously.

[0040] According to the second invention, in addition to the effect of the first invention, the set value of the readout interval is the maximum value unless an operational abnormality of the plant occurs, so that unnecessary readout of the critical parameter Pc can be prevented. In addition, by preventing such unnecessary reading out, it is possible to eliminate the adverse effects on operators and others caused by the unorderly reading out of critical parameters Pc and the like, and to realize reading out at optimal timing.

[0041] According to the third invention, in addition to the effects of the first or second invention, the value of the selected critical parameter Pc1 is input to the readout data priority control unit only when the selected critical parameter Pc1 is on the unsafe side, thereby making it possible to more efficiently prevent unnecessary readout of the critical parameter Pc.

[0042] According to the fourth invention, in addition to the effects of any one of the first to third inventions, the important event data input judgment unit outputs an important event occurrence signal corresponding to an important event occurrence condition as an important event judgment result, so that the operator can recognize the occurrence of an important event and its contents by reading it out. Similarly, the important equipment start-up / trip data input judgment section also outputs an important equipment start-up / trip occurrence signal corresponding to the important equipment start-up / trip event occurrence condition as an important equipment start-up / trip event judgment result, so that the operator can recognize the occurrence of an important equipment start-up / trip event and its content by reading it out.

[0043] According to the fifth invention, in addition to the effects of any one of the first to fourth inventions, the input blocking unit reads out the action level discrimination result in preference to the selected critical parameter Pc1, thereby enabling the operator to quickly recognize the timing to control the operation of the plant.

[0044] According to the sixth aspect of the present invention, in addition to the effects of any one of the first to fifth aspects of the present invention, a first priority order can be determined so that important event data Ps, etc., which have a greater impact on plant operation, are always read out preferentially, thereby enabling a quick and appropriate response to the precursors of accident events or their sudden occurrence.

[0045] According to the seventh invention, in addition to the effects of any one of the first to sixth inventions, the read-out data D2 is created by arranging the first element and the second element, so that a read-out that indicates the operating status of the plant in more detail is performed.

[0046] According to the eighth invention, in addition to the effects of the seventh invention, even in the case of multiple simultaneous accidents in which multiple types and multiple rankings of critical parameters Pc fluctuate, the critical parameters Pc are read out in the optimal order, so that the operator can grasp the situation of abnormal transient changes during an accident without becoming confused.

[0047] According to the ninth invention, in addition to the effects of any one of the first to eighth inventions, when the text data Dt is, for example, extracted by searching a text data file in which multiple text data Dt are stored, a variety of information can be included in one piece of text data Dt. In addition, when the voice data Ds is extracted, for example, by searching an voice data file in which multiple voice data Ds are stored, the voice data creation unit can accurately convert the various information contained in one piece of text data Dt into voice. Therefore, operators can obtain various information about the plant operating status from a single sentence, and can quickly grasp the optimal action to take.

[0048] According to the tenth invention, in addition to the effect of the ninth invention, one or more sorted text data Dt1 are sorted for each output destination number and each sorted text data Dt1 is synthesized into one or more adjusted voice data Ds2, so that the driver can avoid continuously listening to the read-out voice Dv in which the adjusted voice data Ds2 related to different output destinations are mixed. Therefore, the read-out voice Dv can be strongly prevented from becoming a noise for the driver.

[0049] According to the eleventh aspect of the present invention, of 2 In addition to the effects of the invention, the critical parameter filter unit prevents the frequent reading out of selected critical parameters Pc1 that do not require safety precautions, so that the operator can recognize only the selected critical parameters Pc1 that require safety precautions.

[0050] According to the twelfth invention, in addition to the effect of the eleventh invention, the synthetic reading data sentence is output to the reading data priority control unit and then read aloud, so that the operator can clearly recognize, for example, which parameter value is increasing or decreasing at what speed. [Brief description of the drawings]

[0051] [Figure 1]FIG. 1 is a configuration diagram showing a configuration of a reading system according to a first embodiment. [Diagram 2] 3 is a configuration diagram of a critical parameter selection unit included in the reading system according to the first embodiment. FIG. [Diagram 3] FIG. 2A is a configuration diagram of an output unit constituting the read-aloud system according to the first embodiment, and FIG. 2B is a configuration diagram of a text data creation unit constituting the same output unit. [Figure 4] 2 is a configuration diagram of a voice data creation unit and a reading output unit that configure the output unit of the reading system according to the first embodiment. FIG. [Diagram 5] 2 is a configuration diagram of a critical parameter manual input unit and a display unit that constitute the reading system according to the first embodiment. FIG. [Figure 6] 4 is a flowchart showing a flow of data processing in the reading system according to the first embodiment. [Figure 7] 4 is an example of a normal type data table stored in an action level database of an action level determination unit included in the reading system according to the first embodiment. [Figure 8] (a) and (b) are examples of function type data tables stored in the action level database of the action level discrimination unit constituting the reading system of Example 1, and (c) and (d) are other examples of the same function type data table. [Figure 9] 4 is an example of an important event determination result and an important event occurrence condition outputted from an important event data input determination unit constituting the read-aloud system according to the first embodiment. [Figure 10] 4 is an example of an important device start-up / trip event determination result and an important device start-up / trip event occurrence condition outputted from a major important device start-up / trip data input determination unit constituting the read-out system according to the first embodiment. [Figure 11] 4 is a flowchart showing a flow of data processing in a read-aloud data priority control unit included in the read-aloud system according to the first embodiment. FIG. [Figure 12](a) to (c) are each an example of a first priority determined by a reading data priority control unit constituting the reading system of Example 1, where (a) is the first priority at a certain point in time, (b) is a new first priority obtained by changing the first priority of (a), and (c) is a new first priority obtained by further changing the new first priority of (b). [Figure 13] 4 is a flow diagram showing a flow of data processing in an output unit constituting the reading system according to the first embodiment. FIG. [Figure 14] 4 is an example of an output screen of a display unit included in the reading system according to the first embodiment. [Figure 15] 4 is an example of an output screen of a display unit included in the reading system according to the first embodiment. [Figure 16] FIG. 10A is a configuration diagram of a read-aloud data priority control unit constituting a read-aloud system according to a second embodiment, and FIG. 10B is a flow diagram showing a flow of data processing in the read-aloud data priority control unit. [Figure 17] 11 is a table showing critical parameter types included in the critical parameters. [Figure 18] FIG. 11A is a configuration diagram of a read-aloud data priority control unit constituting a read-aloud system according to a third embodiment, and FIG. 11B is a flow diagram showing a flow of data processing in the read-aloud data priority control unit. [Figure 19] FIG. 11 is a configuration diagram of first and second critical parameter filter units and a read-out data sentence creation unit that constitute the read-out system according to the fourth embodiment. [Figure 20] FIG. 11 is a flow diagram showing the flow of data processing in the first and second critical parameter filter units and the read-out data sentence creation unit constituting the read-out system according to the fourth embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS EXAMPLES

[0052] A reading system according to a first embodiment of the present invention will be described in detail with reference to Fig. 1 to Fig. 15. Fig. 1 is a configuration diagram showing the configuration of the reading system according to the first embodiment. As shown in FIG. 1, the reading system 1 is a system capable of reading out a reading voice Dv corresponding to input data D1 including a plurality of types of data that are automatically transmitted from a driving monitoring computer 50. This input data D1 can include, as input data types, critical parameters Pc, important event data Ps relating to important events, and important device start-up / trip data Pe relating to important device start-up / trip events. The critical parameters Pc, important event data Ps, and important device start-up / trip data Pe are each classified into multiple types. The read-out system 1 includes a critical parameter input unit 2, a critical parameter selection unit 3, an action level discrimination unit 4, an important event data input determination unit 5, an important device start-up / trip data input determination unit 6, a read-out data priority control unit 8, and an output unit 12. The reading system 1 also includes a critical parameter manual input unit 7, an input blocking unit 16, and a display unit 17. Among these, the critical parameter input unit 2, the important event data input determination unit 5, and the important equipment start-up / trip data input determination unit 6 are each configured to be able to communicate with an operation monitoring computer 50. Furthermore, in the reading out system 1, the critical parameter input unit 2 receives the critical parameter Pc as input, the important event data input determination unit 5 receives the important event data Ps as input, and the important device start-up / trip data input determination unit 6 receives the important device start-up / trip data Pe as input.

[0053] Next, the critical parameter selection unit 3 selects at least one of the critical parameters Pc inputted in the critical parameter input unit 2, and outputs a selected critical parameter Pc1. A detailed configuration of the critical parameter selection unit 3 will be described with reference to FIG. Furthermore, the action level determination unit 4 includes an action level database 4a that stores action levels Pca that are preset for the critical parameter Pc. Then, the action level discrimination unit 4 compares the selected critical parameter Pc1 output by the critical parameter selection unit 3 with the action level Pca obtained by referring to the action level database 4a, and outputs the action level discrimination result. The flow of the process in the above determination will be described with reference to FIG. 6, and a specific example of the action level Pca will be described with reference to FIG.

[0054] The important event data input judgment unit 5 is provided with an important event data file 5a that stores important event occurrence conditions and important event judgment results corresponding to these important event occurrence conditions, judges the status of an important event from the important event data Ps input by the operation monitoring computer 50, and outputs the important event judgment result. The important equipment start-up / trip data input judgment unit 6 has an important equipment start-up / trip event data file 6a that stores important equipment start-up / trip event occurrence conditions and important equipment start-up / trip event judgment results corresponding to these important equipment start-up / trip events, judges the status of the important equipment start-up / trip event from the important equipment start-up / trip data Pe input by the operation monitoring computer 50, and outputs the important equipment start-up / trip event judgment result. The process flow for these judgments will be described with reference to FIG. 6, a specific example of the important event judgment result will be described with reference to FIG. 9, and a specific example of the important device start-up / trip event judgment result will be described with reference to FIG.

[0055] The voice data priority control unit 8 includes a first element data input unit 9, a first priority order determination unit 10, and a voice data creation unit 11. Among these, the first element data input unit 9 receives first element data De1 that may include the selected critical parameter Pc1, the action level judgment result, the important event judgment result, and the important equipment start-up / trip event judgment result as first elements. In addition, the manually input critical parameters Pcm that can be input from the critical parameter manual input unit 7 are also input to the first element data input unit 9 as first elements included in the first element data De1. The manually input critical parameters Pcm may include the same types as the types of the critical parameters Pc that are automatically transmitted from the operation monitoring computer 50. The detailed configuration of the critical parameter manual input unit 7 will be described with reference to FIG. 5. The first element data De1 input to the first element data input unit 9 is then transmitted by the first element data input unit 9 to the first priority order determination unit 10.

[0056] The first priority order determination unit 10 determines a first priority order for reading out the first element transmitted from the first element data input unit 9 based on the first priority order between the input data type such as the critical parameter Pc, the action level Pca, and the manually input critical parameter Pcm. The first priority order is set in order from high priority to low priority, for example, as important event data Ps, important device start / trip data Pe, action level Pca, manually input critical parameter Pcm, and selected critical parameter Pc1. The process flow in the first priority order determination unit 10 will be described with reference to FIG. 11, and a specific example of the first priority order will be described with reference to FIG. 12.

[0057] Furthermore, the voice data generator 11 arranges the first elements according to the determined first priority to generate voice data D2. The signal is output to the output unit 12. Then, the output unit 12 outputs the read-aloud voice Dv for the read-aloud data D2 as visible light information in addition to sound information. The detailed configuration of the output unit 12 will be described with reference to Figs. 3 and 4, and the process flow will be described with reference to Fig. 13. The read-out data D2 is output to the display unit 17 as well as the output unit 12. In this display unit 17, the detailed contents of the read-out data D2 are output as readable character information and image information for the operator. Specific examples of output by the display unit 17 are shown in Figs. 14 and 15.

[0058] The reading system 1 also includes an input blocking unit 16 that is interposed between the critical parameter selection unit 3 and the first element data input unit 9 of the reading data priority control unit 8. The flow of processing in this input blocking unit 16 will be described with reference to FIG.

[0059] Next, the configuration of the critical parameter selection unit will be described with reference to Fig. 2. Fig. 2 is a configuration diagram of the critical parameter selection unit constituting the reading system according to the embodiment 1. Note that the components shown in Fig. 1 are given the same reference numerals in Fig. 2 and the description thereof will be omitted. As shown in FIG. 2, the critical parameter selection unit 3 includes a critical parameter storage unit 3a, a tendency identification unit 3b, and a readout critical parameter setting unit 3c. Of these, the critical parameter storage unit 3a sequentially stores the critical parameters Pc input to the critical parameter input unit 2 over time. The trend identifying unit 3b identifies an upward or downward trend of the critical parameters Pc sequentially stored in the critical parameter storage unit 3a. The readout critical parameter setting unit 3c also sets a setting value for the critical parameter Pc to be read out from the current time onward. This setting value is a readout critical parameter Pcn1, which will be described later in detail with reference to FIG.

[0060] Furthermore, the configuration of the output unit will be described with reference to Fig. 3 and Fig. 4. Fig. 3(a) is a configuration diagram of the output unit constituting the reading system according to the first embodiment, and Fig. 3(b) is a configuration diagram of the text data creation unit constituting the same output unit. Fig. 4 is a configuration diagram of the voice data creation unit and the reading output unit constituting the output unit of the reading system according to the first embodiment. Note that the components shown in Fig. 1 and Fig. 2 are given the same reference numerals in Fig. 3 and Fig. 4, and their description will be omitted. As shown in Figure 3(a), the output unit 12 includes a text data creation unit 13 that creates text data Dt from the reading data D2, an audio data creation unit 14 that creates audio data Ds from the created text data Dt, and a reading output unit 15 that outputs the created audio data Ds as at least a reading audio Dv.

[0061] As shown in FIG. 3(b), text data creation unit 13 includes a text data file, text data extraction unit 13b, and distribution processing unit 13c. Among the above, the text data file is a file in which a plurality of types of text data Dt corresponding to a plurality of types of read-out data D2 are stored in advance, and is made up of a critical parameter / action level data file 13a-1 and an event data file 13a-2. The former stores the selected critical parameter Pc1 and text data Dt corresponding to the action level judgment result, and the latter stores text data Dt corresponding to the important event judgment result and the important device start-up / trip event judgment result. Furthermore, the former text data Dt is supplied in advance from the action level judgment unit 4, and the latter text data Dt is supplied in advance from the important event data input judgment unit 5 and the important device start-up / trip data input judgment unit 6. Next, the text data extraction unit 13b searches for and extracts text data Dt corresponding to the read-aloud data D2 from the critical parameter / action level data file 13a-1 and the event data file 13a-2.

[0062] Moreover, the distribution processing unit 13c distributes the text data Dt extracted by the text data extraction unit 13b to one or more types of output destinations and outputs them to the voice data creation unit 14. The reason for providing such a distribution processing unit 13c is that if the output destinations are distinguished according to the contents of the text data Dt, the read-out voice Dv will also be output separately for each output destination, which is thought to make it easier for the operator to understand the contents of the read-out voice Dv. Specifically, the text data Dt is distributed to each output destination by being assigned an output destination number for identifying one or more types of output destinations. The output destinations will be explained later.

[0063] As shown in FIG. 4, the voice data creation unit 14 includes a voice data setting unit 14a, a voice data file 14b, a voice parameter input device 14c, and a voice conversion processing unit 14d. Among these, the voice data file 14b stores a plurality of types of voice data parts Dp corresponding to the respective types of text data Dt. Furthermore, the voice data setting unit 14a searches the voice data file 14b for a voice data part Dp corresponding to the text data Dt, extracts it, sets the voice data Ds, and outputs the set voice data Ds to the read-aloud output unit 15. Furthermore, the voice parameter input device 14c supplies the voice data parts Dp to the voice data file 14b via the voice conversion processing unit 14d. In addition, the voice parameter input device 14c also performs maintenance of the voice data parts Dp and creation of new voice data parts Dp. The voice conversion processing unit 14d can convert the voice data parts Dp supplied by the voice parameter input device 14c so that they have a desired sound quality. Specifically, the voice conversion processing unit 14d adjusts the voice data parts Dp so that they have, for example, a desired intonation, tone, and volume.

[0064] As shown in FIG. 4, the read-out output unit 15 includes one or more voice synthesis processing units each corresponding to one or more output destination numbers assigned to the text data Dt, and an adjusted voice output unit 15b. The one or more types of output destinations include, for example, a reactor control panel, a turbine / electrical control panel, and an auxiliary equipment control panel, and these output destinations are provided with voice synthesis processing units 15a-1, 15a-2, and 15a-3, respectively. The voice synthesis processing units 15a-1 to 15a-3, for example, adjust the temporal arrangement of multiple voice word data that constitute one voice data Ds to synthesize adjusted voice data Ds2, and output this adjusted voice data Ds2 to the adjusted voice output unit 15b.

[0065] The adjusted voice output unit 15b outputs the adjusted voice data Ds2 as a read-aloud voice Dv. Specifically, the adjusted voice output unit 15b is a speaker, but in addition to this speaker, a lamp device that generates light information by blinking light may be used. Also, a controller may be included in the read-aloud output unit 15, and the output of the adjusted voice output unit 15b may be input to the voice synthesis processing units 15a-1 to 15a-3. In this configuration, the controller can adjust the time so that the adjusted voice data Ds2 output from the voice synthesis processing units 15a-1 to 15a-3 are not generated simultaneously. Furthermore, when the adjusted voice output unit 15b outputs the adjusted voice data Ds2 as the read-out voice Dv, the adjusted voice output unit 15b feeds back a signal indicating the content of the adjusted voice data Ds2 in synchronization with this output to the first priority order determination unit 10. The adjusted voice data Ds2 is in a format that allows the first priority order determination unit 10 to recognize the content of the adjusted voice data Ds2.

[0066] Next, the configuration of the critical parameter manual input unit and the display unit will be described with reference to Fig. 5. Fig. 5 is a configuration diagram of the critical parameter manual input unit and the display unit constituting the reading system according to the first embodiment. Note that the same reference numerals are used in Fig. 5 to denote the components shown in Figs. 1 to 4, and the description thereof will be omitted. 5, the critical parameter manual input unit 7 is composed of an input / output PC 7a, a GUI input device 7b, and a voice input request device 7c. The purpose of this critical parameter manual input unit 7 is to enable an operator to manually select a critical parameter at will and to give priority to reading out the critical parameter. Of the above, the input / output PC 7a is a personal computer, the GUI input device 7b is a keyboard and mouse for a user to input character string data, and the voice input request device 7c is a voice input conversion device capable of converting a user's voice into character string data.

[0067] The display unit 17 is made up of a display data creation unit 17a and a display 17b. The display unit 17 aims to visually display the read-out data D2 output by the read-out data priority control unit 8. Among the above, the display data creation unit 17a converts the read-out data D2 output by the read-out data priority control unit 8 into character information and image information, and the display unit 17b is a monitor that displays the converted character information and image information. Examples of the output screen of this monitor are shown in Figs. 14 and 15.

[0068] Next, the flow of data processing in the entire reading system will be described with reference to Fig. 6. Fig. 6 is a flow diagram showing the flow of data processing in the reading system according to the embodiment 1. Note that the same reference numerals are used in Fig. 6 for the components shown in Figs. 1 to 5, and the description thereof will be omitted. As shown in FIG. 6, in the reading system 1, as an input data input process in step S1, multiple types of input data D1 (critical parameters Pc, important event data Ps, and important equipment startup / trip data Pe) are input to the critical parameter input unit 2, the important event data input determination unit 5, and the important equipment startup / trip data input determination unit 6, thereby starting data processing in the reading system 1. Next, as an input data storage step of step S2, the critical parameter Pc is stored in the critical parameter storage unit 3a of the critical parameter selection unit 3. All values ​​input at time intervals are stored as the critical parameter Pc, of which the latest one is designated as the latest critical parameter Pcn, and the one stored immediately before the latest critical parameter Pcn is stored as the previous critical parameter Pcp.

[0069] Furthermore, as a trend determination step of step S3, the trend determination unit 3b of the critical parameter selection unit 3 compares the latest critical parameter Pcn with the previous critical parameter Pcp. As a result, when the value of the latest critical parameter Pcn is greater than the value of the previous critical parameter Pcp, the trend determination unit 3b determines that the latest critical parameter Pcn has an upward trend relative to the previous critical parameter Pcp. On the other hand, when the value of the latest critical parameter Pcn is equal to or less than the value of the previous critical parameter Pcp, the trend determination unit 3b determines that the latest critical parameter Pcn has a downward trend relative to the previous critical parameter Pcp. Next, as a read-out interval reading process in step S4, the read-out critical parameter setting unit 3c reads out a preset read-out interval for the critical parameter Pc. The read-out interval is a positive or negative number set to a desired length and is stored in a memory of the read-out system 1 (not shown). Specifically, if the reactor water level is 1000 mm and fluctuates in units of ±1 mm, the read-out interval is set in units of ±100 mm. This is because, when the reactor water level is 1000 mm, no operational abnormality occurs within the range of (1000±100) mm during normal stable operation.

[0070] Then, in the readout critical parameter setting step of step S5, the readout critical parameter setting unit 3c sets the readout critical parameter Pcn1 corresponding to the latest critical parameter Pcn and its sign. That is, if an upward trend is recognized in the trend determination step of step S3, the readout critical parameter Pcn1 is a value obtained by adding the readout interval to the latest critical parameter Pcn. On the other hand, if a downward trend is recognized in the trend determination step of step S3, the readout critical parameter Pcn1 is a value obtained by subtracting the readout interval from the latest critical parameter Pcn.

[0071] To be precise, in the former case, the readout critical parameter Pcn1 is calculated by adding the latest critical parameter Pcn to the readout interval, and then performing the rounding down process and rounding up process set for each critical parameter Pc. On the other hand, in the latter case, the readout critical parameter Pcn1 is calculated by subtracting the readout interval from the latest critical parameter Pcn, and then performing the above-mentioned rounding down process and rounding up process. Specifically, if the latest critical parameter Pcn is, for example, 1110 mm and is on the rise, the readout critical parameter Pcn1 will be 1200 mm. Also, if the latest critical parameter Pcn is, for example, 1110 mm and is on the decline, the readout critical parameter Pcn1 will be 1000 mm.

[0072] Next, in a selected critical parameter output step of step S6, the readout critical parameter setting unit 3c outputs the readout critical parameter Pcn1 as the selected critical parameter Pc1. This selected critical parameter Pc1 is transmitted to the action level discriminator 4 and the input blocking unit 16, as shown in FIG.

[0073] As an action level reading step of step S7, the action level discriminator 4 reads out an action level Pca of a type corresponding to the type of the selected critical parameter Pc1 from the action level database 4a. Then, as an action level determination step in step S8, the action level determination unit 4 determines whether or not the selected critical parameter Pc1 is on the unsafe side with respect to the action level Pca. In addition, since the determination of whether the selected critical parameter Pc1 is on the safe side or the unsafe side differs depending on the type of critical parameter Pc included in the selected critical parameter Pc1, the action level database 4a stores, for example, action levels Pca for various critical parameters Pc, i.e., threshold values ​​for determining whether they are on the safe side or the unsafe side, in stages, such as trigger action levels described later with reference to Figure 7. Therefore, the action level discrimination unit 4 discriminates whether the selected critical parameter Pc1 is on the safe side or the unsafe side based on the threshold value stored in the action level database 4a, and if the selected critical parameter Pc1 is on the unsafe side, outputs this selected critical parameter Pc1 as the action level discrimination result. The action level determination result is immediately transmitted to the input blocking unit 16 .

[0074] Here, the action level Pca will be specifically described with reference to Fig. 7. Fig. 7 is an example of a data table stored in an action level database of the action level determination unit constituting the reading system according to the first embodiment. As shown in Figure 7, the critical parameters are listed as "reactor water level," "S / P pressure," "S / P water temperature," and "condenser vacuum." "S / P" stands for suppression pool, a pool filled with a large amount of water located at the bottom of the reactor containment vessel, for condensing steam in the unlikely event that it is generated inside the containment vessel. 7, the action level Pca is stored as a normal type data table. The normal type data table is a data table in which the action level Pca is output when the critical parameter Pc reaches a certain predetermined value, regardless of other conditions. The action level data stored in the database may be provided only at an upper level, only at a lower level, or at both levels relative to the normal value of the plant.

[0075] 7, the action level Pca is stored in stages for each type of critical parameter Pc shown in the leftmost column, such as trigger action level 1 shown in the second column from the left, trigger action message 1 for trigger action level 1 shown in the third column from the left, etc. For example, for "reactor water level," specific values ​​for trigger action levels 1 and 2 are omitted, but L3 in action message 1 is a set value for so-called reactor scram, which shuts down the reactor by rapidly inserting control rods, and L2 in the trigger action message is lower than L3, and is a set value for closing the isolation valve (MSIV) of the main steam piping that sends out steam generated in the reactor to isolate and cool the reactor, so L2 is on the more unsafe side. That is, trigger action levels 1 and 2 are the action levels Pca. In both cases, trigger action level 2 is more on the unsafe side than trigger action level 1. Also, when the critical parameter Pc is equal to or greater than trigger action level 1 and less than trigger action level 2, or equal to or greater than trigger action level 2, the critical parameter Pc is determined to be on the unsafe side. In this case, the selected critical parameter Pc1, which is the action level determination result, becomes trigger action level 1 or trigger action level 2 depending on its value. In Figure 7, RHR refers to the residual heat removal system, a system in a nuclear power plant, which has functions such as removing the decay heat of the nuclear fuel generated in the reactor after a scram, and spraying water into the S / P to condense the steam and reduce pressure. Also, D / W stands for drywell, and refers to the part inside the reactor containment vessel other than the S / P. EOP stands for emergency operating procedures.

[0076] Also, a functional data table may be used instead of a normal data table, as shown in Fig. 8. Fig. 8(a) and Fig. 8(b) are examples of functional data tables stored in the action level database of the action level determination unit constituting the reading system according to the first embodiment, and Fig. 8(c) and Fig. 8(d) are other examples of the same functional data table. As shown in Fig. 8(a) to Fig. 8(d), the action level Pca is calculated as a functional data table. The functional action level Pca refers to an action level that is determined and output based on the results of calculation using two types of critical parameters as variables. As an example of the functional action level Pca, an example of automatic calculation of the corrected top of active fuel level TAF (Top of Active Fuel) is shown in FIG. 8(a) and FIG. 8(b). First, we will explain the correction of the reactor water level measured by the fuel zone water level gauge of the reactor. The fuel zone water level gauge performs pressure correction to obtain the accuracy of the reactor water level, but this pressure correction value has the characteristic that it is affected by the reactor pressure. Specifically, when the reactor pressure is high, the fuel zone water level gauge will display a lower apparent reactor water level due to pressure correction (converted to saturation temperature). For example, when the reactor pressure is 7 MPa, the actual 0mm water level will be displayed as -1700mm on the fuel zone water level gauge (1700mm is the value that needs to be corrected, i.e., TAF). In this way, the TAF from the fuel zone water level gauge is expressed as a function of the reactor pressure.

[0077] In detail, the function type data table shown in Fig. 8(a) is used. In Fig. 8(a), the reactor pressure P is one type of the selected critical parameter Pc1 output from the critical parameter selection unit 3. Also, p1-p9 refer to the reactor pressure included in the important parameter CPs, which will be described later. And L1-L9 refer to the reactor water level / fuel zone water level included in the action level parameter CPa, which will be described later. Note that L1-L9 are values ​​corresponding to p1-p9, respectively. In this way, p1-p9 and L1-L9 are set in stages and stored in the action level database 4a of the action level discriminator 4. The magnitude of the real values ​​of each variable is p1>p2>p3>···>p9, and L1 <L2<L3<···<L9である。

[0078] As shown in FIG. 8(b), the corrected fuel top water level TAFx at the reactor pressure P is calculated by the action level determination unit 4 by automatically selecting one equation from among a plurality of equations for p1-p9. Specifically, for example, when the selected critical parameter Pc1 is between p1 and p2 (p1>p2), the corrected fuel top water level TAFx is calculated according to the equation in the top line of Fig. 8(b). Also, when the selected critical parameter Pc1 is between p8 and p9 (p8>p9), the corrected fuel top water level TAFx is calculated according to the equation in the bottom line of Fig. 8(b). The same applies when the selected critical parameter Pc1 is between p2 and p8 (p2>...>p8). In addition, if the reactor pressure P=p9, the corrected fuel top water level TAFx is 0 mm. Then, the action level determination unit 4 sets the calculated value of (apparent reactor pressure P+corrected fuel top water level TAFx), which is the true value of the reactor pressure P, as the selected critical parameter Pc1. Furthermore, when this selected critical parameter Pc1 reaches the TAF level of the fuel range water level gauge at that reactor pressure P, it is determined that the selected critical parameter Pc1 is on the unsafe side. Note that the TAF level is a type of pre-set action level Pca. Then, the action level discrimination unit 4 outputs the selected critical parameter Pc1 as an action level discrimination result. In addition, the action level discrimination unit 4 outputs action level data such as "The reactor water level has reached the TAF level."

[0079] Next, as another example of the functional action level Pca, an example of automatic calculation of the start-up region of a Standby Liquid Control System (SLC) for a boric acid solution injection system is shown in FIG. 8(c) and FIG. 8(d). First, let us explain SLC. In the event of a reactor scram failure (automatic or manual scram signal transmission + failure of all control rods to be fully inserted), the nuclear fission reaction in the reactor continues. At that time, if the condenser that processes the main steam generated from the reactor is closed by the main steam isolation valve, the main steam (proportional to the reactor power) released from the reactor is released into the S / P in the pressure suppression chamber via the reactor relief valve, causing the S / P water temperature to rise. If this S / P water temperature continues to rise, it will not be possible to condense heat from the reactor. Therefore, in order to suppress the reactor power, the SLC is activated to inject boric acid water into the reactor, stopping the nuclear fission reaction, lowering the reactor power, and suppressing the amount of main steam released. The timing when this SLC needs to be activated is conditional on the failure of reactor scram as a trigger condition, and this timing is a function of reactor power (APRM (Average Power Range Monitor) average power) - S / P water temperature. The following is a supplementary explanation of SLC activation in the event of an accident in an actual nuclear power plant. The calculation method of SLC activation in the reactor power (APRM average power)-S / P water temperature correlation calculation in the event of a reactor scram failure in this example is an example of an operation procedure in the event of an accident. For example, if the reactor power after the reactor scram failure is 3% or more, or if one or more than two paired control rods cannot be fully inserted at the time of reactor scram, an operation method may be such that an operator immediately activates SLC. In this case, the action level determination unit 4 may output action level data such as "SLC activation conditions are met" and activate SLC. In this example, in order to explain the calculation of the timing when SLC activation is required and the functional database, the explanation will be given by using SLC activation in the reactor power (APRM average power)-S / P water temperature correlation calculation in the event of a reactor scram failure.

[0080] In detail, the functional data table shown in Fig. 8(c) is used. In Fig. 8(c), the reactor power w is one type of the selected critical parameter Pc1 output from the critical parameter selection unit 3. In addition, w1-w7 refer to the reactor power (APRM average value) included in the action level parameter CPa, which will be described later. In addition, t1-t7 refer to the S / P water temperature included in the action level parameter CPa, which will be described later. Note that t1-t7 are values ​​corresponding to w1-w7, respectively. In this way, w1-w7 and t1-t7 are set stepwise and stored in the action level database 4a of the action level discriminator 4. The magnitude of the real values ​​of each variable is w1>w2>w3>···>w8, and t1=t2=t3=t4=t5=t6. <t7<t8である。

[0081] As shown in FIG. 8(d), the SLC startup region S / P water temperature SLCx for the reactor power w value is calculated by the action level discrimination unit 4 automatically selecting one equation from among multiple equations for w1-w7. Specifically, for example, when the selected critical parameter Pc1 falls between w1 and w2 (w1>w2), the S / P water temperature SLCx is calculated according to the equation in the top line of Figure 8(d). Also, when the selected critical parameter Pc1 falls between w6 and w7 (w6>w7), the S / P water temperature SLCx is calculated according to the equation in the bottom line of Figure 8(d). The same applies when the selected critical parameter Pc1 falls between w2 and w6 (w2>...>w6). In addition, when the selected critical parameter Pc1 is 0% or less, SLC activation is not required.

[0082] Then, the action level discrimination unit 4 sets the calculated value of the S / P water temperature SLCx as a selected critical parameter Pc1. Furthermore, when this selected critical parameter Pc1 reaches the action level Pca of the S / P water temperature SLCx at the reactor power w, it is determined that the selected critical parameter Pc1 is on the unsafe side. Then, this selected critical parameter Pc1 is output as an action level discrimination result. Additionally, the action level discrimination unit 4 outputs action level data such as "The suppression pool water temperature has entered the SLC activation region." Therefore, even when the functional data tables shown in Figures 8(a) and 8(c) are used, the action level discrimination unit 4 refers to the action level database 4a which stores the action levels Pca preset for the critical parameters Pc, compares and discriminates between the selected critical parameters Pc1 and the action levels Pca, and outputs the action level discrimination result. The advantage of using a functional data table such as that described above is that the operator can check multiple critical parameters Pc, and the reading system 1 can automatically determine the parameters without having to perform manual calculations, and the reading voice Dv can be notified to the operator at the appropriate time.

[0083] 6 again, in the conflict determination step of step S9-1, the input blocking unit 16 determines whether the selected critical parameter Pc1 output in the selected critical parameter output step of step S6 is a conflicting selected critical parameter Pc1C that conflicts with the action level discrimination result. "Conflicting" here means that the type of the selected critical parameter Pc1 matches the type of the selected critical parameter Pc1 that is the action level discrimination result. If the above types match, the input blocking unit 16 proceeds to the next time determination step S9-2, and determines whether the competitive selection critical parameter Pc1C was output within a specified time after the action level discrimination result was output. This is because, if the competing selection critical parameter Pc1C lags behind the action level discrimination result by more than a predetermined time, the competing selection critical parameter Pc1C does not hinder the reading out of the action level discrimination result. Note that the predetermined time can be set to a desired length in advance and is stored in the memory of the reading out system 1 (not shown).

[0084] Then, when the competing selection critical parameter Pc1C is output within a predetermined time after the action level discrimination result is output, the input blocking unit 16 blocks, only once, the competing selection critical parameter Pc1C from being input to the first element data input unit 9. Also, the input blocking unit 16 may block the input a desired number of times. Instead, the input blocking unit 16 outputs the action level discrimination result to the first element data input unit 9 in preference to the competing selection critical parameter Pc1C as an action level discrimination result prioritization step in step S10. This is for the purpose of giving priority to reading out the action level Pca over reading out the selection critical parameter Pc1, since the action level Pca has a higher priority than the selection critical parameter Pc1 in the first priority order.

[0085] In contrast, if the selected critical parameter Pc1 determined in the conflict judgment process of step S9-1 does not correspond to the competing selected critical parameter Pc1C, or if it is not output within a specified time after the action level discrimination result is output, the input blocking unit 16 outputs the selected critical parameter Pc1 to the first element data input unit 9 of the readout data priority control unit 8 as the selected critical parameter output process of step S11.

[0086] Here, the data processing flow of the important event data Ps input to the important event data input judgment unit 5 in the input data input process of step S1 and the important device start-up / trip data Pe input to the important device start-up / trip data input judgment unit 6 will be described. First, for the important event data Ps, in the important event judgment step of step S14, the important event data input judgment unit 5 judges whether the important event data Ps satisfies a predetermined important event occurrence condition. The important event occurrence condition is, for example, data having the meaning of the sentence shown in the right column of FIG. Therefore, the important event data input determination unit 5 searches for an important event occurrence condition that matches the important event data Ps, and if extracted, determines that the important event data Ps satisfies the important event occurrence condition. Next, the important event data input determination unit 5 searches for and extracts important event determination results corresponding to the extracted important event occurrence conditions. The important event determination results are data having the meaning of the sentences shown in the left column of FIG. In Figure 9, MSIV stands for main steam isolation valve, which has the function of closing the main steam pipe that sends steam from the reactor to the turbine. MS stands for main steam pipe. PCIS stands for primary containment isolation system, which is a system for isolating the reactor containment vessel (primary containment vessel) in an emergency. SGTS stands for emergency gas treatment system, which has the function of treating radioactive gases generated inside the reactor building in an emergency. HVAC stands for ventilation and air conditioning system.

[0087] Then, in step S15, which is an important event determination result output step, the important event data input determination unit 5 outputs the important event determination result. On the other hand, if the important event data input judgment unit 5 cannot extract the important event occurrence condition that coincides with the important event data Ps, it judges that the important event data Ps does not satisfy the important event occurrence condition, and executes the input data input process of step S1.

[0088] In step S16, the important device start-up / trip event determination step, the important device start-up / trip data input determination unit 6 determines whether the important device start-up / trip data Pe satisfies a preset important device start-up / trip event occurrence condition. The important device start-up / trip event occurrence condition is, for example, data having the meaning of the sentence shown in the right column of FIG. Therefore, the important equipment start-up / trip data input judgment unit 6 searches for important equipment start-up / trip event occurrence conditions that match the important equipment start-up / trip data Pe, and if extracted, judges that the important equipment start-up / trip data Pe satisfies the important equipment start-up / trip event occurrence conditions. Next, the important device start-up / trip data input judgment unit 6 searches for and extracts important device start-up / trip event judgment results corresponding to the extracted important device start-up / trip event occurrence conditions. The important device start-up / trip event judgment results are data having the meaning of the sentences shown in the left column of FIG. 10, for example.

[0089] In Fig. 10, RCIC refers to the system in a nuclear power plant called the isolation cooling system, which has the function of cooling the reactor core and maintaining the water level in the reactor after the reactor is isolated. Also, tripping means that the power supply to the pump is cut off and the pump stops. ECCS refers to the system in a nuclear power plant called the emergency core cooling system, which consists of the HPCF (high pressure coolant injection system) and LPCF (low pressure coolant injection system). RSW refers to the system called the reactor auxiliary cooling seawater system, which has the function of cooling the parts around the reactor other than the main engine with seawater. RCW refers to the system called the reactor auxiliary cooling system, which has the function of cooling the parts around the reactor other than the main engine with normal water. TCW refers to the system called the turbine auxiliary cooling system, which has the function of cooling the parts around the turbine other than the main engine with normal water. TSW refers to the system called the turbine auxiliary cooling seawater system, which has the function of cooling the parts around the turbine other than the main engine with seawater. CRD stands for control rod drive system, and has the function of inserting and withdrawing control rods to control the nuclear reaction of nuclear fuel.

[0090] After step S16, in step S17, as an important equipment start-up / trip event determination result output step, the important equipment start-up / trip data input determination unit 6 outputs an important equipment start-up / trip event determination result. On the other hand, if the important device start-up / trip data input judgment unit 6 cannot extract the important device start-up / trip event occurrence conditions that match the important device start-up / trip data Pe, it judges that the important device start-up / trip data Pe does not satisfy the important device start-up / trip event occurrence conditions, and executes the input data input process of step S1.

[0091] As described above, when the first element data De1 including any one of the selected critical parameter Pc1, the action level determination result, the important event determination result, the important equipment start-up / trip event determination result, and the manually input critical parameter Pcm is input to the first element data input unit 9, as a first element data transmission step of step S12, the first element data input unit 9 transmits the first element data De1 to the first priority order determination unit 10. Note that the manually input critical parameter Pcm is manually input in the critical parameter manual input unit 7 as a manual input step of step S11'. Then, as a first priority determination step in step S13, the first priority determination unit 10 determines a first priority for the readout of the selected critical parameter Pc1, action level judgment result, important event judgment result and important equipment start-up / trip event judgment result, and manually input critical parameter Pcm transmitted from the first element data input unit 9, based on the first priority among the critical parameter Pc, important event data Ps, important equipment start-up / trip data Pe, and action level Pca, and the manually input critical parameter Pcm. In addition, the first priority is set to selected critical parameters Pc1, which are selected from important event data Ps, important equipment start-up / trip data Pe, action level Pca, manually input critical parameters Pcm manually input from the critical parameter manual input unit 7, and critical parameters Pc automatically input from the critical parameter input unit 2, in order from high priority to low priority.

[0092] Once the first priority has been determined, in the reading data creation process of step S18, the reading data creation unit 11 arranges the first elements according to the first priority to create reading data D2, and outputs this to the text data creation unit 13 of the output unit 12. Then, in step S19, the output unit 12 outputs the read-aloud voice Dv for the read-aloud data D2 as a read-aloud voice output step. The flow of data processing in the output unit 12 will be described with reference to FIG.

[0093] However, in the first priority order determination unit 10, when a higher-level result including at least one of an important event judgment result, an important equipment start-up / trip event judgment result, and an action level discrimination result is newly transmitted from the first element data input unit 9 after the first priority order has been determined, priority order control is possible to change the first priority order. Next, the above-mentioned priority control method will be described with reference to Fig. 11 and Fig. 12. Fig. 11 is a flow diagram showing a flow of data processing in a read-aloud data priority control unit constituting the read-aloud system according to the first embodiment. Fig. 12(a) to Fig. 12(c) are examples of first priorities determined in a read-aloud data priority control unit constituting the read-aloud system according to the first embodiment, respectively, where Fig. 12(a) shows the first priority at a certain point in time, Fig. 12(b) shows a new first priority obtained by changing the first priority in Fig. 12(a), and Fig. 12(c) shows a new first priority obtained by further changing the new first priority in Fig. 12(b). In Figures 12(a) to 12(c), in actual system operation, the data with the highest priority is converted to voice continuously and large amounts of data do not pile up, but for the sake of convenience in explaining the present invention, it will be explained as if the important event data and the selected critical parameter Pc1 occurred within a short occurrence time span.

[0094] As shown in FIG. 11, when the first priority order determination unit 10 determines the first priority order in the first priority order determination step of step S13, the first priority order is determined as shown in FIG. 12(a). This first priority order is an arrangement of the first element data De1 previously transmitted from the first element data input unit 9, with all the orders being taken up by the selection critical parameter Pc1. However, if new first element data De1 is transmitted from the first element data input unit 9 to the first priority determination unit 10 before all of the reading data D2 according to the first priority have been read out as reading voice Dv, as shown in Figure 11, in the top result determination process of step S13-1, the first priority determination unit 10 determines whether the new first element data De1 is a top result. The reason why the first priority determination unit 10 can determine whether all of the reading data D2 has been read out as reading voice Dv is because the adjusted voice output unit 15b of the output unit 12 is capable of transmitting the time during which the adjusted voice data Ds2 is output and its content to the first priority determination unit 10, and the format of the adjusted voice data Ds2 is such that the first priority determination unit 10 can recognize the content of the adjusted voice data Ds2.

[0095] If it is determined that the new first element data De1 is the top result, in a new first priority order determination step of step S13-2, the first priority order determination unit 10 determines a new first priority order. This new first priority order is shown in FIG. 12(b). As shown in Fig. 12(b), the first to third places of the new first priority order are the important event determination results, which are the top results. And the fourth place and onwards are the selected critical parameters Pc1 that form the first and subsequent places of the first priority order shown in Fig. 12(a). That is, the selected critical parameters Pc1 of the first priority order are arranged lower than the important event determination results, which are the top results, to determine the new first priority order. In contrast, if it is determined in the top result determination process of step S13-1 that the first element data De1 newly transmitted from the first element data input unit 9 is not a top result, the reading data creation process of step S18, which will be described later, the reading voice output process of step S19, and further the input data input process of step S1 are executed.

[0096] When the new first priority is determined, a read-aloud data generating step in step S18 and a read-aloud voice output step in step S19 are executed. After that, in a top result read-out determining step in step S13-3, the first priority order determining unit 10 receives the adjusted voice data Ds2 from the adjusted voice output unit 15b, and determines whether or not the read-out of the top results included therein has been completed. If it is determined that the reading of the top results has been completed, then in a new first element data transmission determination process of step S13-4, the first priority determination unit 10 determines whether or not new first element data De1 has been transmitted from the first element data input unit 9 by repeating the first element data transmission determination process of step S12. On the other hand, if it is determined that the reading of the top results has not been completed, the first priority determination unit 10 executes the reading data creation process of step S18 and the reading voice output process of step S19 so that the reading of the top results is completed as is, in accordance with the new first priority.

[0097] If, in the new first element data transmission determination process of step S13-4, the first priority determination unit 10 determines that new first element data De1 has been transmitted, in the new critical parameter determination process of step S13-5, it determines whether the new first element data De1 is only the selected critical parameter Pc1. On the other hand, if the first priority determination unit 10 determines that new first element data De1 has not been transmitted, the first priority determination unit 10 executes a reading data creation process in step S18 and a reading voice output process in step S19 so that all reading is completed in accordance with the determined new first priority.

[0098] If the first priority determination unit 10 determines that the new first element data De1 is only the selected critical parameter Pc1, in a further new first priority determination process of step S13-6, the first priority determination unit 10 further determines a new first priority. The new first priority order is obtained by deleting the important event determination results arranged in the first to third positions from the new first priority order shown in Fig. 12(b) and outputting them as read-out voice Dv in the adjusted voice output unit 15b, and by arranging only the newly selected critical parameter Pc1 determined in the new critical parameter determination step of step S13-5 according to the first priority order. Such a new first priority order is shown in Fig. 12(c).

[0099] Then, the first priority order determining unit 10 further executes a reading data generating step in step S18 and a reading voice output step in step S19 for the new first priority order. 12(c), the data generation time of each of the selected critical parameters Pc1 arranged in the new first priority order is compared with the current time, and selected critical parameters Pc1 arranged in the first priority order that are earlier than the current time are deleted from the selected critical parameter Pc1 ranked first in the first priority order. After the deletion, the new selected critical parameter Pc1 is moved up in the order, stored, and output. The purpose of this is to prevent malfunctions such as a large discrepancy between the plant critical parameter value and the read-out data D2 by comparing the generation time of the newly selected critical parameter Pc1 with the plant critical parameter process value at the current time in the first priority control shown in Figure 12(c).

[0100] Furthermore, the flow of data processing in the output unit will be described with reference to Fig. 13. Fig. 13 is a flow diagram showing the flow of data processing in the output unit constituting the reading system according to Example 1. Note that the components shown in Figs. 1 to 12 are given the same reference numerals in Fig. 13 and their description will be omitted. As shown in FIG. 13, in the reading data creation step of step S18, when the reading data creation unit 11 outputs the reading data D2, this reading data D2 is input to the text data creation unit 13 of the output unit 12. Then, in a text data creation step of step S20-1, the text data creation unit 13 creates the text data Dt from the speech data D2. As explained in FIG. 3, the text data Dt is extracted by the text data extraction unit 13b of the text data creation unit 13 from the critical parameter / action level data file 13a-1 and the event data file 13a-2 as data corresponding to the read-out data D2.

[0101] The text data Dt is assigned with an output destination number for identifying one or more types of output destination. Therefore, in the assigned text data creation step of step S20-2, the assignment processing unit 13c of the text data creation unit 13 assigns the extracted text data Dt to one or more types of output destination numbers to create one or more assigned text data Dt1, and outputs the one or more assigned text data Dt1 to the voice data setting unit 14a of the voice data creation unit 14.

[0102] Then, in the voice data setting process of step S21-3, the voice data setting unit 14a sets one or more assigned voice data Ds1 corresponding to one or more assigned text data Dt1, and assigns and outputs these assigned voice data Ds1 to the voice synthesis processing units 15a-1 to 15a-3 of the read-out output unit 15, respectively. This audio data setting step of step S21-3 is executed after the audio data part supply step of step S21-1 and the audio data part sound quality conversion step of step S21-2.

[0103] In the voice data part supply step of step S21-1, the voice parameter input device 14c described with reference to FIG. 4 supplies a plurality of types of voice data parts Dp corresponding to the plurality of types of sorted text data Dt1, respectively, to the voice conversion processing unit 14d. The multiple types of voice data parts Dp are, for example, voice files relating to the critical parameter names, their numerical values, units, trend addition statements described later in the second embodiment, important events, important equipment start-up / trip events, and action levels, which are pre-stored in the voice parameter input device 14c.

[0104] Next, in step S21-2, the voice data part sound quality conversion process, the voice conversion processing unit 14d performs a first sound quality conversion on each of the plurality of types of voice data parts supplied. This first sound quality conversion is, for example, a process of changing the intonation or tone of voice of the voice data part Dp to a desired one. Therefore, the voice data file 14b stores the voice data parts Dp that have been subjected to the first sound quality conversion process for each type of voice data part Dp. However, the voice data part sound quality conversion process in step S21-2 may be omitted depending on the necessity of the first sound quality conversion.

[0105] Then, after one or more assigned voice data Ds1 are output to the voice synthesis processing units 15a-1 to 15a-3 of the read-out output unit 15, as the voice synthesis process in step S22, the voice synthesis processing units 15a-1 to 15a-3 each perform a second sound quality conversion on the assigned voice data Ds1 to synthesize adjusted voice data Ds2, and output this adjusted voice data Ds2 to the adjusted voice output unit 15b. The second sound quality conversion is, for example, a process of adjusting the temporal arrangement of a plurality of voice word data constituting one sorted voice data Ds1. When the adjusted voice data Ds2 is output to the adjusted voice output unit 15b, the adjusted voice output unit 15b outputs one or more pieces of adjusted voice data Ds2 as a read-aloud voice Dv and light information in a read-aloud voice output step of step S19.

[0106] Next, the screen displayed by the display 17b of the display unit 17 will be described with reference to Fig. 14 and Fig. 15. Fig. 14 and Fig. 15 are examples of output screens of the display unit constituting the reading system according to Example 1. Note that the components shown in Fig. 1 to Fig. 13 are given the same reference numerals in Fig. 14 and Fig. 15, and the description thereof will be omitted. As shown in FIG. 14, the display 17b can display, in text form, for example, the important event determination result when an important event occurs, the important device start-up / trip event determination result when an important device start-up / trip event occurs, and the occurrence time and content of the read-out data D2 including the action level determination result. As shown in FIG. 15, the display 17b can display the first elements ranking first to third in the first priority order as numerical values ​​or the like.

[0107] As described above, according to the reading system 1, reading voice Dv is output for reading data D2 that may include selected critical parameters Pc1, action level judgment results, important event judgment results, and important equipment startup / trip event judgment results, so that operators can understand in detail the operating status of the plant not only under normal conditions but also under abnormal conditions. Moreover, the critical parameter selection unit 3 reads out only the critical parameters Pcn1 having values ​​that do not cause abnormal plant operation as the selected critical parameters Pc1, thereby preventing unnecessary and random reading out of the critical parameters Pc. This eliminates the adverse effects on operators, etc. caused by the unorderly reading out of the critical parameters Pc, etc., as in the past, and realizes reading out at optimal timing. Furthermore, there is no risk that the operators will not be able to detect abnormal plant operation.

[0108] In addition, since the first priority order determination unit 10 determines the readout order of the critical parameters Pc and the like based on the first priority order between the input data types, the readout order can be appropriately determined even when more than two types of parameters fluctuate simultaneously. In other words, the operator can hear the readout voice Dv that reflects the magnitude of the impact on the plant operation. In addition, the important event data input judgment unit 5 and the important equipment start-up / trip data input judgment unit 6 each output an important event occurrence signal as an important event judgment result, and output an important equipment start-up / trip occurrence signal corresponding to the important equipment start-up / trip event occurrence condition as an important equipment start-up / trip event judgment result, so that the operator can recognize the occurrence of an important event and an important equipment start-up / trip event and their contents by reading them out. In addition, the input blocking unit 16 gives priority to reading out the action level determination result over the selected critical parameter Pc1, so that the operator can quickly recognize the timing to control the operation of the plant.

[0109] Furthermore, the first priority order determining unit 10 can determine a first priority order so that important event data Ps, etc., that have a greater impact on plant operation are always preferentially read out, and can change the determined first priority order to a new first priority order. This makes it possible to quickly and appropriately respond to the precursors of accident events or their sudden occurrence. In addition, when the reading out of important event data Ps, etc. is completed, the previously selected critical parameter Pc1 can be further arranged in a new first priority order, thereby avoiding the numerical values ​​of the new selected critical parameter Pc1 and the previously selected critical parameter Pc1 becoming discontinuous, which would cause confusion for the operator.

[0110] In addition, since the text data Dt is extracted by the text data extraction unit 13b by searching for and extracting the text data Dt corresponding to the read-out data D2 from the critical parameter / action level data file 13a-1, etc., a variety of information can be included in one piece of text data Dt. In addition, since the voice data Ds is extracted by the voice data setting unit 14a by searching through a voice data file in which multiple voice data Ds are stored, the diverse information contained in one piece of text data Dt can be accurately converted into voice. Therefore, operators can obtain various information about the plant operating status from a single sentence, and can quickly grasp the optimal action to take. Furthermore, the voice parameter input device 14c can also create new voice data parts Dp, so that the voice data Ds can always be kept up to date according to the situation at the site.

[0111] In the voice synthesis processing units 15a-1 to 15a-3, one or more assigned text data Dt1 are assigned for each output destination number and synthesized into one or more adjusted voice data Ds2, so that the driver can avoid continuously hearing the read-out voice Dv in which the adjusted voice data Ds2 related to different output destinations are mixed. Therefore, the read-out voice Dv can be strongly prevented from becoming a noise for the driver. Furthermore, since the synthesis unit adjusted voice data Ds2 has the time intervals of the above words and particles adjusted, it is possible to improve the ease of listening of the read voice Dv. EXAMPLES

[0112] A reading system according to the second embodiment of the present invention will be described in detail with reference to Fig. 16. Fig. 16(a) is a configuration diagram of a reading data priority control unit constituting the reading system according to the second embodiment, and Fig. 16(b) is a flow diagram showing the flow of data processing in the reading data priority control unit. Note that the same reference numerals are used in Fig. 16 for the components shown in Figs. 1 to 15, and their description will be omitted. 16(a), in the reading system 1A according to the second embodiment, the first priority order determination unit 10 of the reading data priority control unit 8 includes a second priority order determination unit 10a. The rest of the configuration of the reading system 1A is the same as that of the reading system 1 according to the first embodiment. Here, as shown in FIG. 17, the critical parameter Pc can include, as critical parameter types, an important parameter CPs relating to an important event listed in the leftmost column, an important equipment start / trip parameter CPe relating to an important equipment start / trip event, and an action level parameter CPa relating to the action level Pca. As for the priority of the critical parameter types, as shown in the second column from the left, the important parameters CPs are ranked first, the important equipment start-up / trip parameters CPe are ranked second, and the action level parameters CPa are ranked third. This ranking is called the second priority. Furthermore, the specific contents of each type of critical parameter are given in the rightmost column.

[0113] The reason for determining the second priority as above is as follows. First, the important parameters CPs are parameters that are directly related to the operation and shutdown of the plant, and any fluctuations in these parameters require special attention. Therefore, the important parameters CPs are given the first priority. Next, the important equipment start-up / trip parameter CPe is mainly generated by interlock operation after the occurrence of an important event or tripping due to equipment failure. Therefore, to ensure that these interlocks operate normally, the important equipment start-up / trip parameter CPe is given the second priority.

[0114] The action level parameter CPa is a parameter for a precursor phenomenon of the occurrence of a plant abnormality before the plant is shut down or a parameter for manual operation after the plant is shut down, and is usually a parameter that may change before a critical event. Therefore, the action level parameter CPa is ranked third. However, in reality, it is a parameter that changes before the critical parameter CPs. Examples of such parameters include the system frequency, which is an external power disturbance signal, and the stator cooling water conductivity and generator hydrogen gas pressure, which are generator function loss signals. Furthermore, the reason why the action level parameter CPa is ranked third is because the action level state may not lead to an emergency shutdown of the plant. If any of these action level parameters CPa fluctuate, the operator will strengthen monitoring of the parameter in question and prepare to intervene manually. However, at the same time, if the important parameter CPs fluctuates in conjunction with the action level parameter CPa, the operator will prepare for an emergency shutdown of the plant. The action level parameter CPa also includes critical parameters that belong to the action level of manual operation after important equipment startup / trip, and these include those that require operation after the second important equipment startup / trip parameter CPe changes. For example, the reactor water level fuel area water level (function type) which is the reactor water level TAF action signal and the S / P temperature (function type) which is the SLC startup signal are shown in Figure 8.

[0115] The reason for paying attention to the multiple lower-level critical parameters including the critical parameter Pc as described above is that, for example, when an earthquake occurs, an external power supply is lost due to a power outage of a power transmission line, or multiple simultaneous failures occur, these events have a large impact on the plant and simultaneously cause the multiple critical parameters Pc as described above to fluctuate in multiple ways. As a result, depending on the results of the fluctuations in the multiple critical parameters Pc, the read-out data D2 may be output in an unorderly manner. In that case, this may result in the operator's attention being reduced, so in order to prevent such a situation, a second priority is set for the multiple lower-level critical parameters and attention is paid to them. Therefore, in the reading system 1A according to the second embodiment, the priority order is determined for all of the multiple types of critical parameters, thereby enabling the reading data D2 to be output with more appropriate timing and content.

[0116] As shown in FIG. 16(b), as a selected critical parameter output step of step S11-1, first element data De1 and second element data De2 are input to the first element data input unit 9, and then, as a first and second element data transmission step of step S12-1, the first element data input unit 9 transmits the first element data De1 and the second element data De2 to the first priority order determination unit 10. The second element data De2 may include the selected critical parameter Pc1 for the important parameter CPs, the important equipment start-up / trip parameter CPe, and the action level parameter CPa as second elements. That is, the second element data De2 is a subordinate concept of the selected critical parameter Pc1 of the first element data De1. Therefore, the second element data De2 of the first element data De1 transmitted to the first priority order determination unit 10 is also transmitted by the first priority order determination unit 10 to the second priority order determination unit 10a.

[0117] Then, as the first and second priority determination steps of step S13-7, the second priority determination unit 10a determines a second priority for the reading out of the second element based on the second priority between the critical parameter types, and the first priority determination unit 10 determines a first priority for the reading out of the first element. As described above, the second priority is set in the order from high priority to low priority, that is, the important parameter CPs, the important device start / trip parameter CPe, and the action level parameter CPa. Then, the first priority order determination unit 10 determines a first synthesis priority order by replacing the array of the selected critical parameter Pc1 among the first priorities determined by the first priority order determination unit 10 with the second priorities determined by the second priority order determination unit 10a. Then, the first priority order determination unit 10 outputs the first synthesis priority order to the readout data creation unit 11.

[0118] Next, in a reading data creation step of step S18, the reading data creation unit 11 creates reading data D2 by arranging the first element De1 and the second element De1 according to a synthesis priority obtained by combining the first priority and the second priority. The created reading data D2 is output as a reading voice Dv in a reading voice output step of step S19.

[0119] As described above, the reading system 1A according to the second embodiment can prevent the reading data D2 from being output in an orderly manner due to the variation results of the multiple types of critical parameters Pc. In other words, by organizing the types of critical parameters Pc and making it possible to determine the first synthesis priority, reading according to the plant state can be more appropriately issued, reducing the burden on the operator. Other actions and effects of the reading system 1A are the same as those of the reading system 1 according to the first embodiment. EXAMPLES

[0120] A reading system according to the third embodiment of the present invention will be described in detail with reference to Fig. 18. Fig. 18(a) is a configuration diagram of a reading data priority control unit constituting the reading system according to the third embodiment, and Fig. 18(b) is a flow diagram showing the flow of data processing in the reading data priority control unit. Note that the same reference numerals are used in Fig. 18 for the components shown in Figs. 1 to 17, and their description will be omitted. 18(a), the reading system 1B according to the embodiment 3 includes a priority order estimation unit 10b instead of the second priority order determination unit 10a of the reading system 1A according to the embodiment 2. The priority order estimation unit 10b is an artificial intelligence, and includes a learning model storage unit 10c and an estimation unit 10d. Among these, the learning model storage unit 10c stores a learning model trained using teacher data, which has parameter data Pd as input and outputs a third priority for reading out each value of the critical parameter type corresponding to the parameter data Pd. Moreover, the estimation unit 10d inputs the parameter data Pd to the above learning model, and estimates the third priority order corresponding to this parameter data Pd.

[0121] The parameter data Pd is a physical quantity related to the critical parameter types (important parameters CPs, important equipment start-up / trip parameters CPe, and action level parameters CPa) and is input to the critical parameter input unit 2 in addition to the critical parameter types. Specifically, the parameter data Pd includes the occurrence count N1 of each type of critical parameter for the competing critical parameters PcC that compete with the important event data Ps and the important equipment startup / trip data Pe, among the critical parameters Pc. In addition, the parameter data Pd may include the degree of increase in the occurrence count N1 per certain period of time and the importance reflecting the magnitude of the impact of the competing critical parameters PcC on the plant operation.

[0122] In addition, the third priority order, which is the output of the teaching data, is an arrangement of selected critical parameters Pc1 for the important parameters CPs, important equipment start-up / trip parameters CPe, and action level parameters CPa in the order of, for example, from high priority to low priority, that is, the reactor system, reactor containment vessel system, emergency power supply system, emergency core cooling system, auxiliary cooling water system, turbine generator, and feed / condensate water system. Other configurations of the reading system 1B are similar to those of the reading system 1A according to the second embodiment.

[0123] 18(b), as a selected critical parameter output step of step S11, first element data De1 is input to the first element data input unit 9. At this time, parameter data Pd is also input to the first element data input unit 9. Furthermore, as a first element data transmission step in step S12, the first element data input unit 9 transmits the first element data De1 to the first priority order determination unit 10. At this time, the first element data input unit 9 also transmits the parameter data Pd to the first priority order determination unit 10.

[0124] Thereafter, as a third priority order estimation step in step S12-2, the estimation unit 10d inputs the parameter data Pd to the learning model storage unit 10c and estimates a third priority order corresponding to the parameter data Pd. Then, as the first and third priority order determination step of step S13-8, the first priority order determination unit 10 determines a first priority order for the reading of the first element, and further determines a second synthesis priority order by replacing the array of the selected critical parameter Pc1 from the first priority order determined by the estimation unit 10d with the third priority order determined by the estimation unit 10d.Then, the first priority order determination unit 10 outputs the second synthesis priority order to the reading data creation unit 11.

[0125] Next, in a reading data creation step of step S18, the reading data creation unit 11 creates reading data D2 by arranging the first element De1 and the critical parameter type according to a second synthesis priority obtained by synthesizing the first priority and the third priority. The created reading data D2 is output as reading voice Dv in a reading voice output step of step S19.

[0126] As described above, according to the reading system 1B of the third embodiment, it is possible to realize a priority control suitable for the occurrence of a specific accident event by a learning model using the parameter data Pd as input data. In addition, by proceeding with the learning of the learning model, it is possible to perform optimal priority control not only for a single accident event but also for multiple accidents occurring simultaneously. Other actions and effects of the reading system 1B are the same as those of the reading system 1A of the second embodiment. EXAMPLES

[0127] A reading system according to a fourth embodiment of the present invention will be described in detail with reference to Figs. 19 and 20. Fig. 19 is a configuration diagram of the first and second critical parameter filter units and the reading data sentence creation unit constituting the reading system according to the fourth embodiment. Fig. 20 is a flow diagram showing the flow of data processing in the first and second critical parameter filter units and the reading data sentence creation unit constituting the reading system according to the fourth embodiment. Note that the components shown in Figs. 1 to 18 are given the same reference numerals in Figs. 19 and 20 and their description will be omitted. As shown in FIG. 19, the reading system 1C of Example 4 includes a first critical parameter filter unit 18, a second critical parameter filter unit 19, and a reading data sentence creation unit 20 interposed between the critical parameter selection unit 3 and the reading data priority control unit 8 in the reading system 1 of Example 1.

[0128] In addition, the reading data sentence creation unit 20 is interposed between the second critical parameter filter unit 19 and the input blocking unit 16, and includes a reading critical parameter memory unit 20a, a reading critical parameter trend identification unit 20b, a reading data sentence determination unit 20c, and a reading data sentence synthesis unit 20d. Among these, the readout critical parameter storage unit 20a sequentially stores a plurality of selected critical parameters Pc1 outputted at intervals from the second critical parameter filter unit 19 and a plurality of associated data Pcd respectively related to the plurality of selected critical parameters Pc1. The rest of the configuration of the readout system 1C is similar to the configuration of the readout system 1 according to the first embodiment.

[0129] Next, the flow of data processing in the first critical parameter filter unit 18 will be described. As shown in FIG. 20, in the first critical parameter filter unit 18, as a reading process of step S23, the latest critical parameter Pcn and the immediately preceding critical parameter Pcp among the critical parameters Pc stored in the critical parameter memory unit 3a of the critical parameter selection unit 3, and the action level Pca stored in the action level database 4a of the action level discrimination unit 4 are read. Next, as the approach judgment process of step S24, the first critical parameter filter unit 18 judges whether the latest critical parameter Pcn is closer to the action level Pca than the previous critical parameter Pcp based on the latest critical parameter Pcn, the previous critical parameter Pcp, and the action level Pca output from the action level discrimination unit.

[0130] Specifically, for example, if the latest critical parameter Pcn is on the safe side of the action level Pca and the absolute value of the difference between the latest critical parameter Pcn and the action level Pca is smaller than the absolute value of the difference between the previous critical parameter Pcp and the action level Pca, the first critical parameter filter unit 18 determines that the latest critical parameter Pcn is closer to the action level Pca than the previous critical parameter Pcp. Whether or not the latest critical parameter Pcn is on the safe side of the action level Pca is determined by checking the latest critical parameter Pcn against the numerical value of the action level Pca (the trigger action level shown in FIG. 7) read from the action level database 4a. To reiterate, the latest critical parameter Pcn is approaching the action level Pca when the latest critical parameter Pcn is close to the action level Pca and on the unsafe side, and regardless of the sign of the action level Pca, |Pcn-Pca|<|Pcp-Pca|, and the latest critical parameter Pcn continues to approach the action level Pca over time. This indicates that the latest critical parameter Pcn is continuously shifting from a normal value to an abnormal value, and indicates that the basic conditions for starting to generate speech data are met.

[0131] After the above determination, in step S25, as a selected critical parameter output step, the first critical parameter filter unit 18 outputs the latest critical parameter Pcn and the selected critical parameter Pc1 output by the critical parameter selector 3 to the second critical parameter filter unit 19. Specifically, for example, when the latest critical parameter Pcn and the previous critical parameter Pcp for the reactor water level are 1000 mm and 1100 mm, respectively, and the action level Pca is 900 mm, the latest critical parameter Pcn is on the safe side of the action level Pca, and since |Pcn-Pca| is 100 mm and |Pcp-Pca| is 200 mm, it can be seen that the current state is that the latest critical parameter Pcn is closer to the action level Pca than the previous critical parameter Pcp. Moreover, the selected critical parameter Pc1 output by the critical parameter selection unit 3 was output at approximately the same time as the time when the above-mentioned state was in effect. Therefore, this selected critical parameter Pc1 is estimated to be a transition in an unsafe direction with respect to the reactor water level. Therefore, the first critical parameter filter unit 18 outputs only the selected critical parameters Pc1 output by the critical parameter selection unit 3 that are transitioning in an unsafe direction.

[0132] Then, in a comparison step of step S26, the second critical parameter filter unit 19 compares the latest critical parameter Pcn and the selected critical parameter Pc1 output from the first critical parameter filter unit 18. If the latest critical parameter Pcn is equal to or greater than the selected critical parameter Pc1, the second critical parameter filter unit 19 outputs the latest critical parameter Pcn and the selected critical parameter Pc1 to the read-out data sentence creation unit 20. Therefore, the second critical parameter filter unit 19 outputs only those selected critical parameters Pc1 output from the first critical parameter filter unit 18 that match or exceed the latest critical parameter Pcn.

[0133] Then, as a step S27 for storing selected critical parameters, etc., the readout critical parameter storage unit 20a of the readout data sentence creation unit 20 sequentially stores a plurality of selected critical parameters Pc1 output at intervals from the second critical parameter filter unit 19, and a plurality of associated data Pcd each related to this plurality of selected critical parameters Pc1. The multiple selection critical parameters Pc1 include a preceding selection critical parameter Pc11 and a succeeding selection critical parameter Pc12.

[0134] The related data Pcd is a physical quantity related to each of the preceding selection critical parameter Pc11 and the subsequent selection critical parameter Pc12. Specifically, the related data Pcd is the output timing T1 and value V1 of the previously selected critical parameter Pc11, and the output timing T2 and value V2 of the subsequently selected critical parameter Pc12. Furthermore, the related data Pcd is a value associated with all critical parameters Pc input from the critical parameter input unit 2, and is a value input to the readout critical parameter memory unit 20a via the critical parameter selection unit 3, the first critical parameter filter unit 18 and the second critical parameter filter unit 19.

[0135] Next, as a trend determination process in step S28, the readout critical parameter trend determination unit 20b determines an upward or downward trend of the subsequent selection critical parameter Pc12 relative to the preceding selection critical parameter Pc11 based on the preceding selection critical parameter Pc11 and the subsequent selection critical parameter Pc12 and the related data Pcd respectively related to the preceding selection critical parameter Pc11 and the subsequent selection critical parameter Pc12. Specifically, when the readout critical parameter trend determination unit 20b sets the deviation time X as (T2 - T1) and the deviation value Y as (V2 - V1) / X, it determines the upward or downward trend of the subsequent selection critical parameter Pc12 according to the combination of the deviation time X and the deviation value Y as follows in (1) to (6). That is, the deviation value Y is the slope of the selection critical parameter Pc1 when the value V1 changes to the value V2 at the deviation time X. Therefore, when the deviation value Y is a positive number, the subsequent selection critical parameter Pc12 has an upward trend with respect to the preceding selection critical parameter Pc11, and when the deviation value Y is a negative number, it can be seen that the subsequent selection critical parameter Pc12 has a downward trend with respect to the preceding selection critical parameter Pc11.

[0136] (1) Y = 0 (2) a ≤ X ≤ b (0 < a < b, a and b are arbitrary numbers), and Y > 0 (3) 0 < X < a, and Y > 0 (4) a ≤ X ≤ b, and Y < 0 (5) 0 < X < a, and Y < 0 (6) X ≥ c (c > b, c is an arbitrary number) When the determination result is the above (1), the readout critical parameter trend determination unit 20b does not determine the upward or downward trend of the subsequent selection critical parameter Pc12. Also, when the determination result is (2) to (5), the readout critical parameter trend determination unit 20b outputs this determination result to the readout data sentence determination unit 20c. In addition, when the determination result is (6), the readout critical parameter trend determination unit 20b does not determine the upward or downward trend of the subsequent selection critical parameter Pc12, and resets the used preceding selection critical parameter Pc11, subsequent selection critical parameter Pc12, and related data Pcd. Also, the values of a, b, and c are set to 1 minute, 5 minutes, and 10 minutes respectively, for example.

[0137] Thereafter, in step S29, the voice-out data sentence determination unit 20c determines a voice-out data sentence corresponding to the above (2) to (5) which is an upward or downward trend of the certified subsequent selection critical parameter Pc12, and outputs the determined voice-out data sentence to the voice-out data sentence synthesis unit 20d. Furthermore, the voice-out data sentence determination unit 20c outputs the subsequent selection critical parameter Pc12 which is the subject of the certification result, together with the certification results of (2) to (5), to the voice-out data sentence synthesis unit 20d. The contents of the read-out data sentence, for example, are "rising slowly" if the result is (2), "rising rapidly" if the result is (3), "falling slowly" if the result is (4), and "falling rapidly" if the result is (5).

[0138] Next, in step S30, the read-out data sentence synthesis step, the read-out data sentence synthesis unit 20d synthesizes a synthesized read-out data sentence including at least the subsequent selection critical parameter Pc12 and the determined read-out data sentence. Thereafter, the voice-aloud data sentence synthesis unit 20d outputs the synthesized voice-aloud data sentence to the first element data input unit 9 of the voice-aloud data priority control unit 8. Specifically, the synthetic read-out data sentence is a signal having the meaning, for example, "The reactor water level is 800 mm and slowly decreasing." Among these, "800" is the subsequent selection critical parameter Pc12 included in the synthetic read-out data sentence. This subsequent selection critical parameter Pc12 is the selection critical parameter Pc1 processed by the first priority order determination unit 10 of the read-out data priority control unit 8 in the read-out system 1C.

[0139] As described above, according to the reading system 1C, the first critical parameter filter unit 18 outputs only those selected critical parameters Pc1 output by the critical parameter selection unit 3 that are trending in an unsafe direction, thereby enabling filtering to be performed to prevent unnecessary reading out frequently.

[0140] Furthermore, the second critical parameter filter unit 19 outputs only those selected critical parameters Pc1 output from the first critical parameter filter unit 18 that match or exceed the latest critical parameters Pcn, so that the operator can recognize that the plant's operating condition is progressing toward an abnormal state by having read-out data output aloud in a subsequent process. The purpose of the second critical parameter filter unit 19 is to eliminate the need to read out the latest critical parameter Pcn if the fluctuation in the latest critical parameter Pcn temporarily shifts to the unsafe side but quickly recovers to the safe side, or in other cases, does not reach the value of the set selected critical parameter Pc1. Therefore, the second critical parameter filter unit 19 is provided to perform filtering. Furthermore, the read-out data sentence creation unit 20 recognizes the upward or downward trend and the speed of the subsequent selection critical parameter Pc12 relative to the preceding selection critical parameter Pc11 and outputs these trends as sentences, so that the operator can intuitively grasp the situation regarding the subsequent selection critical parameter Pc12. Other actions and effects of the read-out system 1C are similar to those of the read-out system 1 according to the first embodiment.

[0141] The reading systems 1, 1A to 1C according to the present invention are not limited to those shown in the embodiments. For example, the critical parameter manual input unit 7, the input blocking unit 16, and the display unit 17 may each be omitted. The present invention may be applied to plants equipped with a centralized control panel, such as thermal power plants, hydroelectric power plants, chemical plants, and transport equipment control systems, in addition to nuclear power plants. In this case, parameters characteristic of each plant type are used as the critical parameters Pc, important event data Ps, important equipment start-up / trip data Pe, action level Pca, etc. [Industrial Applicability]

[0142] The present invention can be used as a reading system capable of reading out a voice corresponding to input data in plants equipped with a centralized control panel, such as nuclear power plants, thermal power plants, hydroelectric power plants, chemical plants, and transportation equipment control systems, as well as in other plants. [Explanation of symbols]

[0143] 1, 1A to 1C...Reading system 2...Critical parameter input section 3...Critical parameter selection section 3a...Critical parameter storage section 3b...Trend determination section 3c...Reading critical parameter setting section 4...Action level determination section 4a...Action level database 5...Important event data input determination section 5a...Important event data file 6...Important device start-up / trip data input determination section 6a...Important device start-up / trip event data file 7...Manual critical parameter input section 7a...Input / output PC 7b...GUI input device 7c...Voice input request device 8...Reading data priority control section 9...First element data input section 10...First priority order determination section 10a...Second priority order determination section 10b...Priority order estimation section 10c...Learning model storage section 10d...Estimation section 11...Reading data creation section 12...Output section 13...Text data creation section 13a-1...Critical parameter / action level data file 13a-2...Event data file 13b...Text data extraction unit 13c...Allocation processing unit 14...Voice data creation unit 14a...Voice data setting unit 14b...Voice data file 14c...Voice parameter input device 14d...Voice conversion processing unit 15...Reading output unit 15a-1 to 15a-3...Voice synthesis processing unit 15b...Adjusted voice output unit 16...Input blocking unit 17...Display unit 17a...Display data creation unit 17b...Display unit 18...First critical parameter filter unit 19...Second critical parameter filter unit 20...Reading data sentence creation unit 20a...Reading critical parameter storage unit 20b...Reading critical parameter trend determination unit 20c...Reading data sentence determination unit 20d...Reading data sentence synthesis unit 50...Operation monitoring computer D1...Input data D2...Reading data De1...First element data De2...Second element data Dt...Text data Dt1...Distributed text data Dp...Audio data components Ds...Audio data Ds1...Distributed audio data Ds2...Adjusted audio data Dv...Read-out audio Pc...Critical parameters Pc1...Selected critical parameters Pcm...Manually input critical parameters Pc1C...Conflict selection critical parameters PcC...Conflict critical parametersPcn...Latest critical parameter Pcp...Previous critical parameter Pcn1...Read-out critical parameter Pc11...Previously selected critical parameter Pc12...Subsequently selected critical parameter Ps...Important event data Pe...Important device start / trip data Pca...Action level CPs...Important parameters CPe...Important device start / trip parameters CPa...Action level parameters Pcd...Related data Pd...Parameter data

Claims

1. A reading system capable of reading out a reading voice Dv corresponding to input data D1, The input data D1 can include, as input data types, a critical parameter Pc, important event data Ps relating to an important event, and important device start-up / trip data Pe relating to an important device start-up / trip event, a critical parameter input unit to which the critical parameter Pc is input; a critical parameter selection unit that selects at least one of the input critical parameters Pc and outputs a selected critical parameter Pc1; an action level discrimination unit that includes an action level database that stores a preset action level Pca for the critical parameter Pc, compares the selected critical parameter Pc1 with the action level Pca, and outputs an action level discrimination result; an important event data input determination unit which receives the important event data Ps, determines a status of the important event from the important event data Ps, and outputs an important event determination result; an important equipment start-up / trip data input determination unit which receives the important equipment start-up / trip data Pe, determines the status of the important equipment start-up / trip event from the input important equipment start-up / trip data Pe, and outputs an important equipment start-up / trip event determination result; a first element data input unit to which first element data De1 is input, the first element data De1 including the selected critical parameter Pc1, the action level determination result, the important event determination result, and the important equipment startup / trip event determination result as first elements; a first priority order determination unit that determines a first priority order for the reading of the first elements transmitted from the first element data input unit based on a first priority order between the input data type and the action level Pca; and a read-out data priority control unit that includes a read-out data creation unit that arranges the first elements according to the determined first priority order to create read-out data D2; A reading system comprising an output unit that outputs the reading voice Dv for the created reading data D2.

2. The critical parameter selection unit is a critical parameter storage unit that stores the critical parameter Pc input to the critical parameter input unit; a trend determination unit which compares a latest critical parameter Pcn among the stored critical parameters Pc with a previous critical parameter Pcp which is stored among the stored critical parameters Pc immediately before the latest critical parameter Pcn is stored, and determines an upward or downward trend of the latest critical parameter Pcn relative to the previous critical parameter Pcp; The reading system described in claim 1, characterized in that it includes a reading critical parameter setting unit that sets a reading critical parameter Pcn1 corresponding to the latest critical parameter Pcn based on the recognized upward trend and a reading interval for the critical parameter Pc that has been previously set, and outputs this reading critical parameter Pcn1 as the selected critical parameter Pc1.

3. The reading system described in claim 1 or claim 2, characterized in that the action level discrimination unit determines whether the selected critical parameter Pc1 is on the unsafe side based on the action level Pca, and if the selected critical parameter Pc1 is on the unsafe side, outputs this selected critical parameter Pc1 as the action level discrimination result.

4. the important event data input determination unit determines whether the important event data Ps satisfies a predetermined important event occurrence condition, and outputs the important event determination result if the important event data Ps satisfies the important event occurrence condition; The reading system according to any one of claims 1 to 3, characterized in that the important equipment startup / trip data input determination unit determines whether the important equipment startup / trip data Pe satisfies a preset important equipment startup / trip event occurrence condition, and outputs the important equipment startup / trip event determination result if the condition is satisfied.

5. an input blocking unit interposed between the critical parameter selection unit and the first element data input unit; A reading system as described in any one of claims 1 to 4, characterized in that the input prevention unit prevents a competing selection critical parameter Pc1C, which is among the selected critical parameters Pc1 and which competes with the action level discrimination result, from being input to the first element data input unit within a predetermined time after the action level discrimination result is output.

6. In the first priority order determination unit, the first priority order is set to the important event data Ps, the important device start-up / trip data Pe, the action level Pca, and the selected critical parameter Pc1 in order from high priority to low priority, After the first priority order is determined for the first element data De1 including at least the selected critical parameter Pc1 as the first element, the first priority order determination unit: When a higher-level result including at least one of the important event determination result, the important equipment start-up / trip event determination result, and the action level determination result is newly transmitted from the first element data input unit, The reading system according to any one of claims 1 to 5, characterized in that the first priority is changed to a new first priority in which the selected critical parameter Pc1 is arranged lower than the top result.

7. The critical parameter Pc may include, as critical parameter types, an important parameter CPs related to the important event, an important device start-up / trip parameter CPe related to the important device start-up / trip event, and an action level parameter CPa related to the action level Pca, the first priority order determination unit includes a second priority order determination unit; the second priority order determination unit receives second element data De2 that may include, as second elements, the selected critical parameters Pc1 for the important parameters CPs, the important equipment start-up / trip parameters CPe, and the action level parameters CPa, and determines a second priority order for reading out the second elements based on a second priority order between the critical parameter types; The reading system according to any one of claims 1 to 6, characterized in that the reading data creation unit creates the reading data D2 by arranging the first elements and the second elements in accordance with the first priority and the second priority, respectively.

8. The critical parameter input unit receives parameter data Pd relating to the critical parameter type, the first priority order determination unit includes a priority order estimation unit instead of the second priority order determination unit; The priority estimation unit a learning model storage unit that stores a learning model trained using teacher data that receives the parameter data Pd as an input and outputs a third priority level for reading out the critical parameter type corresponding to the parameter data Pd; an estimation unit that inputs the parameter data Pd into the learning model and estimates the third priority order corresponding to the parameter data Pd; The parameter data Pd includes at least an occurrence number N1 of each type of critical parameter for a competing critical parameter PcC that competes with the important event data Ps and the important device start-up / trip data Pe, among the critical parameters Pc; The reading system of claim 7, characterized in that the reading data creation unit creates the reading data D2 by arranging the first elements and the critical parameter types according to the first priority and the third priority that replaces the second priority.

9. The reading system according to any one of claims 1 to 8, characterized in that the output unit includes a text data creation unit that creates text data Dt from the reading data D2, a voice data creation unit that creates voice data Ds from the created text data Dt, and a reading output unit that outputs the created voice data Ds as at least the reading voice Dv.

10. The text data Dt is assigned an output destination number for identifying one or more types of output destinations, the text data creation unit includes a text data file in which a plurality of types of the text data Dt corresponding to the plurality of types of the reading data D2 are stored in advance, a text data extraction unit that searches for and extracts the text data Dt corresponding to the reading data D2 from the text data file, and a distribution processing unit that distributes the extracted text data Dt to one or more types of output destination numbers to create one or more distributed text data Dt1 and outputs the one or more distributed text data Dt1 to the voice data creation unit; the read-out output unit includes one or more voice synthesis processing units corresponding to one or more types of the output destination numbers, and an adjusted voice output unit; The voice data creation unit creates one or more pieces of sorted voice data Ds1 corresponding to the one or more pieces of sorted text data Dt1, and outputs the one or more pieces of sorted voice data Ds1 to one or more of the voice synthesis processing units. The voice synthesis processing unit outputs one or more of the assigned voice data Ds1 to the adjusted voice output unit, The reading system according to claim 9 , wherein the adjusted voice output unit outputs the allocated voice data Ds1 as the reading voice Dv.

11. a critical parameter filter unit interposed between the critical parameter selection unit and the readout data priority control unit; The critical parameter filter unit includes: The reading system described in claim 2, characterized in that when it is determined based on the latest critical parameter Pcn, the previous critical parameter Pcp, and the action level Pca output from the action level discrimination unit that the latest critical parameter Pcn is closer to the action level Pca than the previous critical parameter Pcp, the latest critical parameter Pcn and the selected critical parameter Pc1 output by the critical parameter selection unit are output to the reading data priority control unit.

12. The critical parameter input unit receives, in addition to the critical parameter Pc, associated data Pcd related to the critical parameter Pc, a read-aloud data sentence creation unit interposed between the critical parameter filter unit and the read-aloud data priority control unit; the reading data sentence creation unit includes a reading critical parameter storage unit, a reading critical parameter tendency determination unit, a reading data sentence determination unit, and a reading data sentence synthesis unit; the readout critical parameter storage unit sequentially stores the plurality of selected critical parameters Pc1 outputted from the critical parameter filter unit at intervals and the plurality of associated data Pcd respectively associated with the plurality of selected critical parameters Pc1; the readout critical parameter tendency determination unit determines an upward or downward tendency of the subsequent selection critical parameter Pc12 relative to the preceding selection critical parameter Pc11 based on a preceding preceding selection critical parameter Pc11 and a subsequent subsequent selection critical parameter Pc12 constituting the plurality of selected critical parameters Pc1, and on the related data Pcd respectively related to the preceding selection critical parameter Pc11 and the subsequent selection critical parameter Pc12; the read-out data sentence determination unit determines a read-out data sentence corresponding to the determined upward trend or downward trend of the subsequently selected critical parameter Pc12; The voice data sentence synthesis unit synthesizes a synthetic voice data sentence including at least the subsequent selection critical parameter Pc12 and the determined voice data sentence, and outputs the synthesized synthetic voice data sentence to the voice data priority control unit; The related data Pcd is the output timing T １ and the value V １ and the output timing T of the subsequent selection critical parameter Pc12. ２ and the value V ２ 12. The reading system according to claim 11, wherein

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