Monitoring device

Abstract

To provide a monitoring device capable of significantly reducing the quantity of facilities for devices required for information acquisition as compared with individually collecting information from a lot of facilities and devices, and significantly reducing the cost.SOLUTION: The monitoring device 1a for monitoring target space 100 includes a detection unit 2 that detects odor, heat, and sound in the target space. The target space is space in a power plant or a water treatment plant in which a plurality of facilities and / or devices 101a to 101c are installed. The monitoring device also includes information communication means that transmits information related to a detection result from the detection unit to an external terminal device. The monitoring device is also provided with instruction input means for selecting that content of the information related to the detection result from the detection unit which is to be output to the outside as information, and the instruction input means can be controlled by the external terminal device.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a monitoring device that monitors a target space, and more particularly to a monitoring device that monitors a space in which facilities and / or equipment are installed in a power generation plant or a water treatment plant. [Background technology]

[0002] Conventionally, in order to maintain and manage the installed facilities and equipment in plants, some of the facilities and equipment that are particularly important for the operation of the plant are equipped with a function to automatically collect information related to sensor readings and operation data, and the obtained information is accumulated in a central monitoring room or the like for analysis, and instructions for work are issued as necessary. Meanwhile, for other facilities and equipment, workers make rounds to directly check the facilities and equipment.

[0003] During patrol inspections, workers used to visually read information such as sensor readings and record it by hand, but in recent years, this data has also been managed electronically.

[0004] For example, Patent Document 1 describes a field data collection system that includes an identification information holder that holds identification information unique to field devices including sensors, valves, and instruments installed in a plant, and a portable information terminal for inspection used by an operator when inspecting the field devices. This field data collection system eliminates the problem of operators misreading and inputting incorrect values ​​because the portable information terminal reads and stores the indicated values ​​of the indicators during patrol inspections by the operator. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2018-106389 A Summary of the Invention [Problem to be solved by the invention]

[0006] On the other hand, plants are large sites with many facilities and devices installed for various purposes. For this reason, in terms of labor costs and labor shortages due to population decline, it is preferable to reduce the number of rounds of inspections by workers and to use equipment (monitoring devices) with the functions necessary to obtain information related to maintenance. In addition, when an identification information holder is provided for each device and the indicated value of the indicator is read for each device as in Patent Document 1, it is necessary to assign identification information to each of the many and varied devices and to install the identification information holder, which is expensive.In addition, the amount of information collected is huge, which creates the problem of the cost of storing and analyzing the collected information.

[0007] An object of the present invention is to provide a monitoring device that can significantly reduce costs compared to collecting information individually from many facilities and devices. [Means for solving the problem]

[0008] As a result of thorough consideration of the above problems, the inventor discovered that by obtaining specific information about the target space, rather than information about each facility or device, it is possible to significantly reduce monitoring costs and enable early detection of abnormalities, and thus completed the present invention. That is, the present invention relates to the following monitoring device.

[0009] The monitoring device of the present invention for solving the above problems is a monitoring device that monitors a target space, and is characterized by having a detection unit that detects odor, heat, and sound in the target space.

[0010] This monitoring device detects information related to specific parameters, such as odor, heat, and sound, for the target space, so the number of devices required to acquire information can be significantly reduced compared to when information is obtained from each facility or device. In addition, since the amount of information to be analyzed can be reduced, analysis is easy and abnormal conditions can be detected early. This allows for monitoring that can significantly reduce costs and detect abnormalities early, compared to obtaining information from each facility or device individually.

[0011] Furthermore, this monitoring device does not detect information related to the parameters of odor, heat, and sound individually, but detects information related to the three parameters simultaneously, thereby obtaining composite information related to the state of the target space. This makes it easier to predict events occurring in the target space during monitoring, and enables rapid response after an abnormality is detected.

[0012] Moreover, one embodiment of the monitoring device of the present invention is characterized in that the target space is a space within a power generation plant or a water treatment plant in which a plurality of facilities and / or devices are installed. According to this feature, monitoring is possible by detecting information related to odors, heat, and sound in the space within a power plant or water treatment plant having multiple facilities and / or equipment, without obtaining information for each facility or device as is done in conventional power plant or water treatment plant monitoring, making it possible to implement monitoring that significantly reduces monitoring costs and enables early detection of abnormalities.

[0013] In addition, one embodiment of the monitoring device of the present invention is characterized in that it comprises an information communication means for transmitting information related to the detection result of the detection section to an external terminal device. According to this feature, the manager can easily obtain information regarding the state of the target space without increasing the number of times that workers must visit the site for inspection.

[0014] In addition, one embodiment of the monitoring device of the present invention is characterized in that it is provided with an instruction input means for selecting the content of information related to the detection results of the detection unit to be output externally, and the instruction input means is controllable by an external terminal device. According to this feature, it becomes possible for the administrator to efficiently obtain the information he requires through input from an external terminal device, thereby making it possible to improve the efficiency of monitoring. Effect of the Invention

[0015] According to the present invention, it is possible to provide a monitoring device that can significantly reduce costs compared to collecting information individually from many facilities and devices. [Brief description of the drawings]

[0016] [Figure 1] 1 is a schematic explanatory diagram showing a structure of a monitoring device according to a first embodiment of the present invention. [Diagram 2] FIG. 2 is a schematic explanatory diagram showing the structure of a detection unit in the monitoring device according to the first embodiment of the present invention. [Diagram 3] FIG. 4 is a schematic explanatory diagram showing the structure of a detection unit in another monitoring device according to the first embodiment of the present invention. [Figure 4] FIG. 4 is a schematic explanatory diagram showing the structure of a monitoring device according to a second embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0017] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a monitoring device according to the present invention will be described in detail with reference to the drawings. The monitoring device described in the embodiment is merely an example for explaining the monitoring device according to the present invention, and the present invention is not limited to this.

[0018] The monitoring device of the present invention is used for a target space that requires monitoring. Examples of such target spaces include plants, warehouses, commercial facilities, and other spaces that require monitoring within a large area. The target space may be either outdoors or indoors, and is not particularly limited. The target space may be either a closed space or an open space, and is not particularly limited.

[0019] The monitoring device of the present invention is preferably used in a space in which a plurality of facilities and / or devices are installed, and is particularly preferably used in a power generation plant or a water treatment plant. The power plant is not particularly limited as long as it is a facility capable of obtaining electric energy, and examples thereof include thermal power generation, hydroelectric power generation, power generation using renewable energy, and power generation using biomass. The water treatment plant is not particularly limited as long as it is a facility for treating water, and examples thereof include water purification plants, sewage treatment plants, and wastewater / wastewater treatment facilities for treating wastewater / wastewater. The target space described in the embodiment is merely an example for explaining the monitoring device according to the present invention, and is not limited to this.

[0020] [First embodiment] FIG. 1 is a schematic explanatory diagram showing the structure of a monitoring device in a first embodiment of the present invention. As shown in Fig. 1, a monitoring device 1a according to a first embodiment of the present invention is installed in a target space 100 and has a detection unit 2. In Fig. 1, arrows indicated by dashed dotted lines indicate connections that enable control or input.

[0021] The target space 100 in this embodiment includes a plurality of devices 101a to 101c. The types of the devices 101a to 101c are not particularly limited. For example, rotating devices such as pumps, turbines, and agitators in power plants and water treatment plants, heat treatment devices such as boilers, treatment tanks, and electrical equipment can be mentioned. Note that, although the devices 101a to 101c are shown in FIG. 1 as being connected by piping, the present invention is not limited to this. For example, the devices 101a to 101c may be independent devices.

[0022] The monitoring device 1a performs monitoring by obtaining information about the inside of the target space 100, and does not monitor the devices 101a to 101c individually. Therefore, the monitoring device 1a only needs to be installed at a location where information about the entire target space 100 can be obtained, and does not need to be installed for each of the devices 101a to 101c. For example, when the target space 100 is a closed space such as indoors, the monitoring device 1a may be installed on a ceiling or a wall. In this case, the monitoring device 1a may be installed in the center of the ceiling to obtain information on the entire target space 100, and in the target space 100 where a certain amount of air flow is generated by air conditioning or the like, the monitoring device 1a may be installed in a location where air circulation is generated, taking into account the air flow near the ceiling or near the wall. Furthermore, for example, when the target space 100 is an open space such as outdoors that does not have a ceiling or walls, or when it is a closed space where it is difficult to install the monitoring device 1a on the ceiling or walls, a stand having a certain height from the ground of the target space 100 may be provided, and the monitoring device 1a may be installed on the stand. This makes it possible to install the monitoring device 1a whether the target space 100 is an open space or a closed space. Depending on the size of the target space 100, it may be preferable to provide multiple monitoring devices 1a to obtain information on the entire target space 100. In this case, for example, multiple monitoring devices 1a may be provided on the same plane, or multiple monitoring devices 1a may be provided at different installation heights.

[0023] The detection unit 2 is for detecting odors, heat, and sound in the target space 100. The detection unit 2 includes an odor detection unit 21 for detecting odors, a heat detection unit 22 for detecting heat, and a sound detection unit 23 for detecting sound, housed within a housing 20. The housing 20 integrates the detection units 21-23, facilitating installation, and also serves as a protective member for the detection units 21-23. Therefore, the housing 20 may be omitted depending on the installation location and installation environment of the detection units 21-23. Furthermore, the detection unit 2 includes a detection result output unit 24 that outputs the detection results of the odor detection unit 21, the heat detection unit 22, and the sound detection unit 23 to the outside.

[0024] The odor detection unit 21 is for detecting odors in the target space 100. The odor to be detected is not particularly limited, but it is preferable to target odors that are expected to occur in the target space 100 when an abnormality occurs. For example, when the target space 100 is a water treatment plant such as a sewage treatment plant, odor components derived from ammonia and sulfur-based compounds contained in the sewage, which is the water to be treated, can be mentioned. Furthermore, when the target space 100 is a power plant such as a thermal power plant or a biomass power plant, odor components derived from hydrocarbon-based compounds used in fuels, turbine lubricants, etc. can be mentioned.

[0025] Examples of the odor detection unit 21 include odor meters that measure specific single components (e.g., specific malodorous substances such as ammonia and methyl mercaptan) as odors generated within the target space 100, and odor meters that measure composite components (e.g., sulfur-based compounds, hydrocarbon-based compounds, aldehydes, lower fatty acids, etc.). In addition, examples of odor sensors that detect odors in a broad sense without specifying components include odor sensors that use lipid membranes or semiconductors.

[0026] The heat detection unit 22 is for detecting heat within the target space 100 . The heat to be detected is not particularly limited, but examples include the air temperature (room temperature) in the target space 100 and locally generated heat. In particular, when the target space 100 is a plant (water treatment plant or power generation plant) equipped with many devices, there are many potential heat sources. Therefore, it is preferable to detect the air temperature of the entire target space 100 or a local overheated state of devices, piping, etc.

[0027] Examples of the heat detection unit 22 include a bimetal thermometer and a thermal expansion thermometer that measure changes in temperature (room temperature) throughout the target space 100. Examples of the heat detection unit 22 that detects heat locally generated within the target space 100 include a temperature sensor using a thermocouple or a resistance thermometer, a temperature sensor that detects infrared rays, and a thermo camera.

[0028] The sound detection unit 23 is for detecting sounds within the target space 100 . The sound to be detected is not particularly limited, but it is preferable to target sounds that are expected to occur in the target space 100 when an abnormality occurs. The sounds to be detected include not only sounds that humans can hear, but also vibrations, ultrasonic waves, and the like. For example, if the target space 100 is equipped with rotating equipment such as a pump or a mixer, abnormal sounds (including ultrasonic waves) and abnormal vibrations due to abnormal rotation may be included. Furthermore, if the target space 100 is equipped with piping, abnormal sounds (including ultrasonic waves) due to leakage of liquid or gas may be included. Other examples include abnormal sounds associated with the falling or deformation of parts in the target space 100.

[0029] The sound detection unit 23 may be anything that can detect information related to sound, such as sound quality (frequency) and volume, and examples of the sound detection unit 23 include a microphone, an ultrasonic detector, and a vibration sensor.

[0030] The monitoring device 1a in this embodiment is equipped with an odor detection unit 21, a heat detection unit 22, and a sound detection unit 23, and is therefore able to simultaneously detect information relating to the three parameters of odor, heat, and sound, rather than detecting information relating to each of them individually, thereby obtaining composite information relating to the state of the target space 100. For example, the parameters that change in the event of an abnormality and the degree of change in the parameters differ among odor, heat, and sound depending on the function and structure of the devices 101a-101c in the target space 100 and the pipes connecting the devices 101a-101c. Therefore, by obtaining information on how each of the three parameters has changed, it becomes easier to predict events occurring in the target space 100, and it becomes possible to quickly detect an abnormality.

[0031] An example of prediction of an event occurring in the target space 100 will be described. For example, if there is a change in the sound detection result, it is assumed that an abnormality occurring in the target space 100 is an abnormal rotation of a rotating device, an abnormality in piping, a falling part, etc., but it is difficult to judge based on the sound detection result alone. Here, if there is no change (abnormality) in the odor and heat detection results in addition to the sound detection result, it is predicted that a part has fallen in the target space 100. On the other hand, if there is no change in the odor detection result and there is a change in the local heat detection result in addition to the sound detection result, it is predicted that an initial rotation abnormality has occurred in the rotating device in the target space 100. In this way, by judging not only information related to one parameter but also information related to three parameters in a composite manner, it becomes easier to predict an event occurring in the target space 100, and it becomes possible to quickly detect an abnormality and to take a prompt response after the abnormality is detected. As a specific example, for example, if the target space 100 is a power plant equipped with a boiler and a turbine, if there is a significant change in the heat detection results compared to the odor and sound detection results, an abnormality related to the heating section of the boiler is predicted. Also, from the degree of change in the odor, heat, and sound detection results, it is possible to distinguish and predict whether the abnormality is an abnormality in the stirring section in the boiler, an abnormality in the turbine rotation, or an abnormality in the piping. Also, for example, if the target space 100 is a water treatment plant equipped with a raw water storage tank and transport piping for sewage, wastewater, and wastewater, if there is a significant change in the odor detection results compared to the heat and sound detection results, an abnormality in the raw water storage tank itself or in the transport piping close to the raw water storage tank is predicted. Also, from the degree of change in the odor, heat, and sound detection results, an abnormality in other treatment tanks or transport piping can be predicted.

[0032] The detection result output unit 24 is for outputting the detection results obtained in the odor detection unit 21, the heat detection unit 22, and the sound detection unit 23 to the outside. The detection result output unit 24 is connected to the odor detection unit 21, the heat detection unit 22, and the sound detection unit 23, and can input the detection results of the respective detection units 21 to 23. The connection means between the detection result output unit 24 and each detection unit 21 to 23 is not particularly limited. For example, the detection result output unit 24 may be connected so that the detection result can be directly input via wiring, or the detection result can be input via a communication means capable of transmitting and receiving data. In addition, in FIG. 1, the detection result output unit 24 is shown as being provided with one detection result output unit 24 for all the detection units 21 to 23, but is not limited thereto. For example, the detection result output unit 24 may be provided for each of the detection units 21 to 23.

[0033] The detection result output from the detection result output unit 24 is used to determine whether or not an abnormality has occurred in the target space 100. For example, the detection result may be only information related to the presence or absence of detection in each of the detection units 21-23, or may be information related to the measurement data measured in each of the detection units 21-23. Hereinafter, examples of embodiments of the detection result output unit 24 according to the information output as the detection result will be described with reference to FIGS. 2 and 3. FIG.

[0034] FIG. 2 shows an example of an embodiment of the detection result output section 24 in the case where information on the presence or absence of detection in each of the detection sections 21 to 23 is used as the detection result output from the detection result output section 24. In the target space 100, under normal circumstances, no odor, localized heat, or sound is detected, and if a temperature (room temperature) gauge is not used as the heat detection unit 22, it is determined that an abnormality has occurred in the target space 100 when any detection result is obtained by any of the detection units 21-23. In this case, the detection result output unit 24 outputs that a detection has been made by any of the detection units 21-23, making it possible to notify the manager of the abnormality. Examples of output means from the detection result output unit 24 include, as shown in Fig. 2, means for notifying the outside of an abnormality via a warning unit 25 that lights up a warning light or indicator lamp, or emits a warning sound or message, and means for notifying information to an external terminal device 3 (such as a personal computer in a central monitoring room or a terminal carried by a manager) via information communication means 26 capable of transmitting and receiving data. From the viewpoint of reducing the number of times that an operator visits the site for inspection, it is preferable to notify information to the external terminal device 3 via the information communication means 26. At this time, the output from the detection result output unit 24 only needs to be information regarding the presence or absence of detection by each of the detection units 21 to 23, so there is no need to analyze the detection results, and monitoring can be performed that enables rapid abnormality detection.

[0035] Furthermore, if the content of an event (abnormal state) occurring within the target space 100 can be predicted from a combination of the presence or absence of detection by the detection units 21 to 23, it is preferable that the prediction result is also notified to the manager. For example, the external terminal device 3 that receives the output from the detection result output unit 24 may pattern the output display, and may predict events occurring in the target space 100 according to the pattern. As a specific example, in a case where the target space 100 is equipped with a heating device, when the external terminal device 3 receives information from the detection result output unit 24 that there is no detection of odor or sound (x) and there is detection of heat (o), the external terminal device 3 may display "x o x" on the external terminal device 3, directly or indirectly indicating that this is information that an abnormality in the heating device in the target space 100 is predicted. In addition, when directly indicating information about events occurring in the target space 100, the external terminal device 3 may display information about events occurring in the target space 100 according to the output display pattern, or may automatically convert to information about events occurring in the target space 100 according to the output display pattern. In addition, when indirectly indicating information about events occurring in the target space 100, a separate list may be created, and the administrator may refer to this list and the output display pattern. This makes it possible to notify the administrator of a prediction regarding the contents of an abnormality in the target space 100 without analyzing the detection results in the monitoring device 1a. As another example, as described later, the detection results of the detection units 21 to 23 and information regarding the events occurring in the target space 100 may be inquired through the analysis unit 27 and the judgment unit 28, and the contents of the predicted events in the target space 100 may be output together as an output from the detection result output unit 24. As a specific example, in a case where the target space 100 is equipped with a heating device, when there is no detection of odor and sound but there is detection of heat, information that an abnormality in the heating device is predicted based on information in the database 27a in the analysis unit 27 may be output together. This makes it possible to notify the administrator of a highly accurate prediction result regarding the events occurring in the target space 100.

[0036] FIG. 3 shows an example of an embodiment of the detection result output section 24 in the case where information related to the measurement data measured by each of the detection sections 21 to 23 is used as the detection result output from the detection result output section 24. In the target space 100, odors and sounds occur even under normal circumstances, and when a temperature (room temperature) gauge is used as the heat detection unit 22, it is difficult to determine whether or not an abnormality has occurred in the target space 100 based only on the detection results of each of the detection units 21-23. In this case, the detection result output unit 24 needs to output information related to the measurement data measured by each of the detection units 21-23 and perform analysis. As shown in FIG. 3, the detection result output unit 24 includes an analysis unit 27 and a judgment unit .

[0037] The analysis section 27 performs analysis based on the measurement data from the detection result output section 24 . The determination unit 28 determines the presence or absence of an abnormality in the target space 100 based on the analysis result of the analysis unit 27, and outputs the determination result. The analysis unit 27 and the determination unit 28 are, for example, calculation devices that execute programs required for comparing numerical values ​​and image data using a processor such as a CPU. The analysis and judgment performed by the analysis unit 27 and judgment unit 28 will be exemplified below.

[0038] First, the content of the analysis in the analysis unit 27 may be, for example, a database 27a that stores information on odors, heat, and sound in the target space 100 under normal circumstances, and the measurement data from the detection result output unit 24 is compared with the information in the database 27a. This makes it possible to accurately detect the occurrence of abnormalities even in the target space 100 where odors, heat, and sound are generated under normal circumstances. This analysis is particularly suitable when the target space 100 is, for example, a plant equipped with a large number of facilities and devices.

[0039] The information stored in database 27a may be actual values ​​obtained by measuring information related to odor, heat, and sound in the target space 100 under normal conditions in advance, or may be set values ​​input by an administrator. Furthermore, it is preferable that the information stored in database 27a is stored in a data format corresponding to the information obtained from detection result output unit 24. For example, a format that can be converted into digital data such as numerical values, waveforms (images), etc. is preferable. The information stored in the database 27a may include information about events occurring in the target space 100 predicted by a combination of detections related to odor, heat, and sound. This makes it possible to compare the information obtained from the detection result output unit 24 with information related to the prediction of events occurring in the target space 100 and to determine the content of abnormalities in the target space 100. It is preferable that the database 27a has a ROM for storing digital data and an input means for inputting information from the outside, which makes it easy to store and update information in the database 27a and improves the operability of the analysis unit 27.

[0040] Another example of the analysis performed by the analysis unit 27 is to compare the measurement data output from the detection result output unit 24 with the measurement data output immediately before. In this case, it is not necessary to provide the database 27a. This analysis is particularly suitable, for example, when an abnormality occurs in the target space 100 and any of odor, heat, and sound changes suddenly.

[0041] Then, based on the comparison result in the analysis unit 27, the judgment unit 28 judges whether or not an abnormality has occurred in the target space 100, and outputs the judgment result. For example, the judgment may be made such that an abnormality has occurred when the comparison result differs beyond an allowable (error) range, or when the difference between the measurement data exceeds a predetermined value. In addition, the judgment result obtained in the judgment unit 28 may be compared with information on events occurring in the target space 100 stored in the database 27a, and the result of the inquiry may be output together as the judgment result. The means for outputting the judgment result is not particularly limited, and may be, for example, the above-mentioned warning unit 25 or information communication means 26.

[0042] As explained using Figures 2 and 3, it is preferable that the contents of the detection result output from the detection result output unit 24 and the contents of the analysis and judgment in the analysis unit 27 and the judgment unit 28 correspond to the target space 100. In addition, an instruction input means 29 may be provided that can input selection and instructions from the outside regarding the contents of the detection result output from the detection result output unit 24 and the contents of the analysis and judgment in the analysis unit 27 and the judgment unit 28, and the information related to the contents of the detection result and the information related to the contents of the analysis and judgment may be switched and output at the discretion of the administrator. The instruction input means 29 may be any means that can select the contents of the information to be output, and is not particularly limited. For example, as shown in FIG. 3, it may be a means that can be controlled based on input from the external terminal device 3 and has an information communication function that allows the contents of the information to be output to be selected, or an input means (button, keyboard, touch panel, etc.) for selecting the contents of the information to be output may be directly provided on the housing 20. In addition, from the viewpoint of reducing the number of inspections that the worker must perform at the site, it is preferable that the instruction input means 29 is controllable based on input from the external terminal device 3. In addition, the information communication means 26 may also serve as the function of the instruction input means 29.

[0043] In addition, when a detection result output unit 24 is provided for each of the detection units 21 to 23, depending on the respective detection targets, it is possible to use a combination of a unit that outputs the detection results directly via the warning unit 25 or the information communication means 26 without providing an analysis unit 27 and a judgment unit 28, and a unit that provides an analysis unit 27 and a judgment unit 28 and outputs the results of analysis and judgment. For example, in a target space 100 where sound is normally generated but no odor or localized heat is generated, the detection result output unit 24 provided in the odor detection unit 21 and the heat detection unit 22 outputs information on the presence or absence of detection, the detection result output unit 24 provided in the sound detection unit 23 outputs measurement data, and the judgment result is output via the analysis unit 27 and the judgment unit 28. This makes it possible to output information that requires analysis separately from information that does not require analysis, thereby improving the accuracy of abnormality detection and the output speed of the judgment result. Note that when multiple detection result output units 24 are provided, all of the detection result output units 24 may be equipped with the analysis unit 27 and the judgment unit 28, and the above-mentioned instruction input means 29 may be used to switch whether or not to output via the analysis unit 27 and the judgment unit 28 at the discretion of the administrator.

[0044] As described above, the monitoring device in this embodiment detects information related to specific parameters, namely odor, heat, and sound, for the target space, so the number of devices required to acquire information can be significantly reduced compared to when information is obtained for each facility or device. In addition, since the amount of information to be analyzed can be reduced, analysis is easy and it is possible to detect abnormalities at an early stage. This makes it possible to perform monitoring that can significantly reduce costs and detect abnormalities at an early stage, compared to when information is obtained individually from each facility or device.

[0045] Furthermore, the monitoring device in this embodiment does not detect information related to the parameters of odor, heat, and sound individually, but detects information related to the three parameters simultaneously, thereby obtaining composite information related to the state of the target space. This makes it easier to predict events occurring in the target space, and enables rapid detection and response to abnormalities.

[0046] [Second embodiment] FIG. 4 is a schematic explanatory diagram showing a monitoring device according to a second embodiment of the present invention. 4, the monitoring device 1b according to the second embodiment is the same as the monitoring device 1a according to the first embodiment, except that housings 20a to 20c are provided for the odor detection unit 21, the heat detection unit 22, and the sound detection unit 23. Note that a description of the same structures as those in the first embodiment will be omitted.

[0047] In the monitoring device 1b according to this embodiment, independent housings 20a to 20c are provided for the respective detection sections 21 to 23, and these are disposed within the target space 100, respectively. When detecting odor, heat, and sound in the target space 100, the optimum installation location for detecting each parameter is not always the same. Therefore, by providing independent housings 20a-20c for each of the detection units 21-23, the detection units 21-23 are installed in the target space 100 at optimum locations for detecting each parameter. The housings 20a to 20c facilitate the installation of the detection units 21 to 23, and also serve as protective members for the detection units 21 to 23. Therefore, the housings 20a to 20c may be omitted depending on the installation locations and installation environments of the detection units 21 to 23.

[0048] In the monitoring device 1b of this embodiment, similarly to the monitoring device 1a in the first embodiment described above, a warning unit 25, an information communication means 26, an analysis unit 27, and a judgment unit 28 may be provided for the detection result output unit 24. The detection result output unit 24 may be provided for each of the detection units 21 to 23, or may be a unit that collects the detection results of the detection units 21 to 23 in a single detection result output unit 24 and outputs them to the outside. Similarly, the analysis unit 27 and the judgment unit 28 may be connected to the detection result output unit 24 provided for each of the detection units 21 to 23, or may be connected to a single detection result output unit 24.

[0049] Furthermore, in the monitoring device 1b of this embodiment, similarly to the monitoring device 1a in the first embodiment described above, an instruction input means 29 is provided that can externally input selections and instructions regarding the contents of the detection results output from the detection result output unit 24 and the contents of the analysis and judgment in the analysis unit 27 and judgment unit 28, and the information regarding the contents of the detection results and the information regarding the contents of the analysis and judgment described above can be switched and output at the discretion of an administrator.

[0050] The optimum installation locations of the detection units 21 to 23 are not particularly limited, and can be appropriately selected depending on the type and characteristics of the detection target and the structure of the target space 100. For example, when the odor to be detected in the target space 100 is a gas that is lighter than air, such as ammonia, the odor detection unit 21 may be provided in the upper part (ceiling, etc.) of the target space 100. On the other hand, when the odor to be detected in the target space 100 is a gas that is heavier than air, such as hydrogen sulfide or methyl mercaptan, the odor detection unit 21 may be provided in the lower part of the target space 100 (near the ground, etc.). In addition, the heat detection unit 22 may be provided near a location within the target space 100 where heat-related detection is expected in the event of an abnormality, such as a location where equipment that is likely to become a heat source (equipment 101a in Figure 4) and pipes are concentrated. In addition, the sound detection unit 23 may be provided in the vicinity of a location within the target space 100 where sound-related detection is expected in the event of an abnormality, such as a location where rotating equipment, bent pipes, etc. are gathered (the connecting pipe between equipment 101b and equipment 101c in Figure 4). This allows each of the detectors 21 to 23 to perform detection at an optimal installation location for each parameter to be detected, and makes it possible to improve the accuracy of detecting an abnormality in the target space 100.

[0051] The above-described embodiment shows an example of a monitoring device. The monitoring device according to the present invention is not limited to the above-described embodiment, and the monitoring device according to the above-described embodiment may be modified within the scope of the gist of the claims.

[0052] For example, in the monitoring device of this embodiment, the detection unit may be mounted on a movable structure and moved to an arbitrary position within the target space. The movable structure may be moved manually or by external control. It may also be moved automatically along a preset moving path. When a moving path is set, the movable structure may be configured to perform detection while constantly circulating, or may repeat the operations of moving, stopping, and detecting at predetermined time intervals. Furthermore, the movable structure may be one that moves along guide rails installed on the ceiling, walls, or ground within the target space, and may be one that is capable of flying in all directions. This makes it possible to obtain information from a wide range of locations within the target space, and also enables rapid response to locations that require particularly focused monitoring. [Industrial Applicability]

[0053] The monitoring device of the present invention is preferably used for monitoring a target space that requires monitoring, and in particular, is preferably used for monitoring a plant equipped with a large number of facilities and / or devices. [Explanation of symbols]

[0054] 1a, 1b monitoring device, 2 detection unit, 20, 20a, 20b, 20c housing, 21 odor detection unit, 22 heat detection unit, 23 sound detection unit, 24 detection result output unit, 25 warning unit, 26 information communication means, 27 analysis unit, 27a database, 28 judgment unit, 29 instruction input means, 3 external terminal device, 100 target space, 101a, 101b, 101c equipment

Claims

1. A monitoring device that monitors a target space in which a plurality of facilities or devices are installed, A detection unit that detects odor, heat, and sound in the target space; a detection result output unit that outputs a detection result of the detection unit, The target space is a space within a water treatment plant, The detection unit detects odor components derived from ammonia and / or sulfur-based compounds as information related to odor, A monitoring device characterized in that it predicts the presence or absence of an abnormality in the target space based on a combination pattern of output results related to odor, heat, and sound from the detection result output section.

2. The monitoring device according to claim 1 , wherein the sound detected by the detection unit is an abnormal sound caused by an abnormal rotation of a rotating device installed in the target space.

3. 2. The monitoring device according to claim 1, wherein the detectors for detecting odor, heat and sound in the target space in the detection unit are integrated into one device.

4. 4. The monitoring device according to claim 1, further comprising an information communication means for transmitting information relating to a detection result of said detection section to an external terminal device.

5. providing an instruction input means for selecting information to be output to the outside from among information related to the detection result of the detection unit; 5. The monitoring device according to claim 1, wherein the instruction input means is controllable by an external terminal device.

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