Vehicle condition determination system

Abstract

To provide a vehicle state determination system capable of accurately determining a state of a railway vehicle with a simple configuration.SOLUTION: A vehicle state determination system 1 for determining a state of a railway vehicle 2 includes: an inspection pattern storage unit 10 which stores, for each inspection item for inspecting an inspection target in the railway vehicle 2, inspection patterns in each of which a precondition that triggers an inspection and a determination condition for determining whether or not the inspection target is normal are defined; a state information acquisition unit 20 which acquires state information indicating a state of the railway vehicle 2 from a state information storage unit 4; a precondition determination unit 30 which determines, based on the state information acquired from the state information storage unit 4, whether or not the precondition is satisfied; and a determination condition determination unit 40 which determines, when it is determined that the precondition is satisfied, whether or not the determination condition is satisfied on the basis of state information after a predetermined time elapses from the time when the precondition is satisfied.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a vehicle state determination system for determining the state of a railway vehicle. [Background technology]

[0002] Conventionally, railway vehicles have been inspected periodically. To reduce the workload of inspectors who perform such inspections and to enable quantitative inspections, automation has been implemented. One example of such inspection technology is described in Patent Document 1, the source of which is shown below.

[0003] Patent Document 1 describes an inspection system for inspecting equipment installed on railway vehicles. In this inspection system, on-board equipment is installed on the railway vehicle, and this on-board equipment includes a data storage unit, an inspection condition storage unit, an inspection reference value storage unit, an inspection data extraction unit, and an inspection judgment unit. The data storage unit records data transmitted between the lead vehicle and the following vehicle. The inspection condition storage unit stores conditions for performing the inspection, and the inspection reference value storage unit stores reference values ​​for judging the inspection results. The inspection data extraction unit extracts data that matches the conditions stored in the inspection condition storage unit from data recorded during operation of the railway vehicle, and the inspection judgment unit compares values ​​obtained from the data extracted by the inspection data extraction unit with the reference values ​​stored in the inspection reference value storage unit to judge the inspection results. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2017-118617 Summary of the Invention [Problem to be solved by the invention]

[0005] As described above, in the inspection system described in Patent Document 1, data used for inspections is recorded on the railway vehicle, and conditions for performing inspections and reference values ​​for judging inspection results are stored on the railway vehicle. Furthermore, the inspection results are judged on the railway vehicle using these data and conditions. Therefore, for example, if an inspection item needs to be added or a reference value needs to be changed, this must be done on the railway vehicle. Furthermore, if there are multiple railway vehicles to which an inspection item needs to be added or a reference value needs to be changed, this must be done for each railway vehicle, which can take several years. Therefore, this system has the disadvantage that required inspections cannot be changed immediately and that the change work requires a great deal of effort. Furthermore, various sensors (e.g., overhead line voltage sensors) must be installed to measure inspection results. Therefore, the inspection system described in Patent Document 1 leaves room for improvement in terms of easier inspections.

[0006] Therefore, there is a demand for a vehicle state determination system that can accurately determine the state of a railway vehicle with a simple configuration. [Means for solving the problem]

[0007] The vehicle state determination system according to the present invention has the following characteristic configuration: A vehicle state determination system for determining a state of a railway vehicle, an inspection pattern storage unit in which inspection patterns are stored in advance, the inspection patterns defining preconditions that trigger inspection and judgment conditions that judge whether the inspection object is normal, for each inspection item that inspects the inspection object on the railway vehicle; a status information acquisition unit that acquires status information from a status information storage unit that stores status information indicating the status of the railway vehicle that is sequentially transmitted from the railway vehicle in operation; a precondition determination unit that determines whether the precondition is satisfied based on the state information acquired from the state information storage unit; a determination condition determination unit that, when it is determined that the precondition is satisfied, determines whether the determination condition is satisfied based on the state information after a predetermined time has elapsed since the precondition was satisfied; and The point is that it is equipped with the following.

[0008] This characteristic configuration makes it possible to determine the state of a railway vehicle based on the state information transmitted from the railway vehicle and stored in the state information storage unit. Therefore, when inspecting an inspection target on the railway vehicle, there is no need to monitor the railway vehicle or install new sensors. Furthermore, even if an inspection item is added or a reference value is changed, this can be done in the vehicle state determination system. Therefore, the vehicle state determination system can replace at least a portion of the inspection. Therefore, it is possible to reduce the time and effort required for the inspection. Furthermore, since the precondition determination unit determines whether the inspection target is normal based on the state information obtained a predetermined time after the precondition is met, for example, by setting a condition appropriate for the determination as the precondition, the accuracy of the determination can be improved compared to conventional cases where data is simply compared with a reference value. In this way, the vehicle state determination system enables accurate determination of the state of a railway vehicle with a simple configuration.

[0009] Also, the state information is defined by at least a state of a determination signal used to determine the test item, a state of a first reference signal referred to in determining the test item, and a state of a second reference signal that is a signal different from the first reference signal and referred to in determining the test item, The test pattern is the precondition is defined based on at least a state of the determination signal and a state of the first reference signal; During a period from when the precondition is satisfied until a predetermined time has elapsed, at least a state of the first reference signal and a state of the second reference signal are defined; It is preferable that the judgment condition has a first inspection pattern defined based on the state of the judgment signal corresponding to the inspection item after the predetermined time has elapsed.

[0010] With this configuration, the first inspection pattern, which is defined for each of the prerequisites and the judgment conditions and is also defined for the waiting state between the fulfillment of the prerequisites and the determination of whether the judgment conditions are fulfilled, applies to many inspection items, making it possible to efficiently inspect whether the inspection object in the railway vehicle is normal or not.

[0011] Also, the state information is defined by at least a state of a determination signal used to determine the test item, a state of a first reference signal referred to in determining the test item, and a state of a second reference signal that is a signal different from the first reference signal and referred to in determining the test item, The test pattern is the precondition is defined based on a state of the determination signal, a state of the first reference signal, and a state of the second reference signal; The period from when the precondition is satisfied until the predetermined time has elapsed is determined based on at least a first waiting time during which the determination signal waits in the state at the time when the precondition is satisfied, and a second waiting time during which the determination signal waits until the state of the determination signal changes after the first waiting time has elapsed, The determination condition may be configured to have a second test pattern defined based on the state of the determination signal corresponding to the test item after the predetermined time has elapsed.

[0012] With this configuration, by using the second test pattern that specifies two different waiting times during standby, it is possible to test an object to be tested that has, for example, two operations during standby.

[0013] Also, the state information is defined by a state of a determination signal used to determine the test item and a state of a first reference signal that is referenced in the determination of the test item, the inspection pattern includes a third inspection pattern for inspecting the inspection item that needs to be inspected when the desired status information cannot be confirmed a predetermined number of times, The third test pattern is the precondition is defined based on a state of the determination signal and a state of the first reference signal; The judgment condition may be defined based on the state of the judgment signal corresponding to the test item after a predetermined time has elapsed since the precondition was met.

[0014] With this configuration, for example, if there are multiple suspicious judgment results regarding the operation of a specific device, the device that has multiple suspicious judgment results can be properly inspected by using a third inspection pattern that specifies prerequisites and judgment conditions that can inspect the operation of the specific device.

[0015] Also, the state information is defined by a state of a determination signal used to determine the test item and a state of a first reference signal that is referenced in the determination of the test item, the test pattern includes a fourth test pattern that tests one state of the test object in accordance with a plurality of combinations of states of the determination signal, The fourth test pattern is the precondition is defined based on a state of the determination signal and a state of the first reference signal; It is preferable that the determination condition is defined based on the state of the determination signal.

[0016] With this configuration, by using a fourth test pattern that specifies conditions set by a combination of multiple data (signals), such as a setting table that sets the operation of a specific device (for example, a table that sets the pressure in the brake cylinder or a table that sets the number of brake stages), it is possible to test a device whose operation is specified by such a setting table. [Brief explanation of the drawings]

[0017] [Figure 1] 1 is a block diagram showing a configuration of a vehicle state determination system; [Figure 2] FIG. 2 is a diagram showing an example of inspection items performed by the vehicle state determination system. [Figure 3] FIG. 10 is a diagram illustrating an example of a test pattern. [Figure 4] FIG. 10 is a diagram showing an inspection process using a first inspection pattern. [Figure 5] FIG. 10 is a diagram showing an inspection process using a first inspection pattern. [Figure 6] FIG. 10 is a diagram showing an inspection process using a second inspection pattern. [Figure 7] FIG. 10 is a diagram illustrating an inspection process using a third inspection pattern. [Figure 8] FIG. 10 is a diagram showing an inspection process using a fourth inspection pattern. [Figure 9] 10 is an example of a display screen showing an evaluation result. DETAILED DESCRIPTION OF THE INVENTION

[0018] The vehicle condition determination system according to the present invention is configured to be able to determine, by a computer, the condition of a railway vehicle that is the subject of inspection required in a periodic inspection. Hereinafter, a vehicle condition determination system 1 according to this embodiment will be described.

[0019] FIG. 1 is a block diagram schematically illustrating the configuration of a vehicle state determination system 1. As shown in FIG. 1, the vehicle state determination system 1 includes an inspection pattern storage unit 10, a state information acquisition unit 20, an inspection item setting unit 25, an inspection pattern acquisition unit 27, a prerequisite determination unit 30, a determination condition determination unit 40, an evaluation unit 50, and an inspection pattern input unit 60. Each functional unit is constructed using hardware or software, or both, with a CPU as its core component, in order to perform processing related to determining the state of a railway vehicle 2. The vehicle state determination system 1 is not installed on each railway vehicle 2, but is provided in a location (e.g., a control room) independent of the railway vehicle 2, and is configured to process state information for multiple railway vehicles 2 simultaneously. Therefore, the vehicle state determination system 1 is a ground-based facility that is configured to be able to process multiple train sets simultaneously and automatically.

[0020] The inspection pattern storage unit 10 pre-stores inspection patterns that specify prerequisites and judgment conditions associated with each other for each inspection item for inspecting an inspection target in the railway vehicle 2. The railway vehicle 2 is a vehicle that runs along a railroad track, and corresponds to an electric train that runs using electricity as power, or a diesel railcar that runs using the output of an internal combustion engine or a steam engine as power. In this embodiment, an electric train will be used as an example of the railway vehicle 2. The inspection target in the railway vehicle 2 corresponds to the instruments and devices mounted on the railway vehicle 2, their operation, functions, etc. Therefore, the inspection items for inspecting the inspection target in the railway vehicle 2 correspond to items that inspect the operation of the instruments mounted on the railway vehicle 2, the operation of the devices mounted on the railway vehicle 2, the functions of the instruments mounted on the railway vehicle 2, the functions of the devices mounted on the railway vehicle 2, etc.

[0021] A prerequisite is a condition that triggers an inspection of an object to be inspected. A trigger for an inspection corresponds to a command to start the inspection. Therefore, a prerequisite can also be said to be a start condition for starting the inspection. A judgment condition is a condition for judging whether an object to be inspected is normal. Whether normal or not means whether the instruments and devices of the object to be inspected are performing the expected operation and function. Therefore, the inspection pattern storage unit 10 stores, for each inspection item for inspecting an object to be inspected, prerequisites that correspond to the start conditions for the vehicle state judgment system 1 to start the inspection and judgment conditions for judging whether the instruments and devices of the object to be inspected are performing the expected operation and function, in association with each other.

[0022] Although details will be described later, in this embodiment, the test pattern is configured to have a plurality of test patterns, namely, a first test pattern, a second test pattern, a third test pattern, and a fourth test pattern, and is configured to select and use one from the first test pattern, the second test pattern, the third test pattern, and the fourth test pattern depending on the test item.

[0023] FIG. 2 shows an example of inspection items that can be inspected by the vehicle state determination system 1. In the example of FIG. 2, 36 inspection items, numbered 1 to 36, are listed. Each inspection item is also shown with a type of inspection pattern to be used. Therefore, it is possible to select the inspection pattern to be used depending on the inspection item to be inspected. Specifically, for example, when inspecting "No. 1" for "Air System Air Leak," "First Inspection Pattern" is selected. When inspecting "No. 4" for "EB Device Operation (60 seconds ± 5 seconds)," "Second Inspection Pattern" is selected. When inspecting "No. 3" for "ATS-SW Verification," "Third Inspection Pattern" is selected. When inspecting "No. 9" for "Master Controller Powering Steering Wheel - Powering Command," "Fourth Inspection Pattern" is selected. These inspection items and inspection patterns can be input via the inspection pattern input unit 60 (see FIG. 1). Furthermore, if additional inspection items are needed, they can be added by inputting them via the inspection pattern input unit 60.

[0024] Typically, the periodic inspection for "No. 1" "Air System Air Leak" involves checking for air leaks by placing an ear close to the vehicle. The periodic inspection for "No. 3" "ATS-SW Confirmation" typically involves transmitting 130 kHz signals from a tester to the on-board coil, an underfloor equipment, to check whether the automatic train stop device can be confirmed (by pressing the confirmation switch and applying the service brakes). The periodic inspection for "No. 4" "EB Device Operation" typically involves checking whether the emergency train device buzzer sounds at 60 ± 5 second intervals when a simulated speed signal above a predetermined speed is input. In this embodiment, at least 81 of the 570 inspection items can be assigned to one of the inspection patterns. In other words, by using the vehicle condition determination system 1 of this embodiment, it is possible to replace regular inspections or reduce the frequency of regular inspections, thereby significantly improving inspection efficiency.

[0025] Returning to FIG. 1 , the status information acquisition unit 20 includes a communication interface that acquires status information from the status information storage unit 4. The status information storage unit 4 stores big data of status information indicating the status of the railway vehicle 2, sequentially transmitted from the railway vehicle 2 in operation. As shown in FIG. 1 , multiple railway vehicles 2 are in operation within the railway company's business area. Each of the multiple railway vehicles 2 is equipped with various instruments and devices, and transmits and receives, for example, control signals and operation signals in response to driver operations, between the instruments and devices and the control units that control the instruments and devices. These control signals and operation signals can grasp the status of the railway vehicle 2, and are therefore treated as status information in the vehicle status determination system 1. The status information, consisting of such control signals and operation signals (hereinafter referred to as "data"), is acquired in real time by a data acquisition device (not shown) of the railway vehicle 2. The status information acquired by the data acquisition device is sequentially transmitted to the monitoring system 3 via a network and stored in the status information storage unit 4 of the monitoring system 3. The status information stored in the status information storage unit 4 is used at least after (in the future) the time it was stored. At this time, in order to be able to identify the point in time at which the status information is collected, the status information is stored together with time information (time stamp) collected by the data collection device of the railway vehicle 2. It is preferable to use the railway company's private network to transmit the status information from the railway vehicle 2 to the monitoring system 3 via a network.

[0026] The state information stored in the state information storage unit 4 can also be used by functional units other than the state information acquisition unit 20. In this case, if access to the state information storage unit 4 is concentrated, the processing load on the state information storage unit 4 may increase. Therefore, the state information acquisition unit 20 can be configured to acquire state information from the state information storage unit 4 and store the state information. Of course, the state information acquisition unit 20 can also be configured to access the state information storage unit 4 and acquire state information every time it becomes necessary to acquire the state information. The state information acquired by the state information acquisition unit 20 is transmitted to the precondition determination unit 30, which will be described later.

[0027] Here, as described above, the test pattern storage unit 10 indicates and stores the test pattern to be used for the test for each test item. Therefore, when testing a test target, it is preferable to first set which test items to test using the test item setting unit 25. Information indicating the test items set by the test item setting unit 25 is transmitted to the test pattern acquisition unit 27, which then acquires the test pattern to be used for the test from the test pattern storage unit 10 based on the test items corresponding to this information. The test pattern acquired by the test pattern acquisition unit 27 is transmitted to the prerequisite determination unit 30 and the determination condition determination unit 40, which will be described later.

[0028] The precondition determination unit 30 determines whether a precondition is satisfied based on the state information acquired from the state information storage unit 4. The state information is transmitted from the state information acquisition unit 20 to the precondition determination unit 30. The precondition is included in the test pattern stored in the test pattern storage unit 10. The test pattern used for testing is also transmitted to the precondition determination unit 30 from the test pattern acquisition unit 27. The precondition determination unit 30 determines whether the precondition is satisfied from the state information, i.e., whether the data indicated by the state information contains a state in which the precondition is satisfied. The state information to be determined by the precondition determination unit 30 is preferably state information acquired after the time indicated by the timestamp of the state information that was the target of determination during the previous test for the same test item as the test item currently being tested. The determination result by the precondition determination unit 30 is transmitted to the determination condition determination unit 40, which will be described later.

[0029] When it is determined that a precondition is satisfied, the determination condition determination unit 40 determines whether the determination condition is satisfied based on state information after a predetermined time has elapsed since the precondition was satisfied. The determination that the precondition is satisfied can be identified from the determination result transmitted from the precondition determination unit 30. The time when the precondition is satisfied refers to the time when the precondition is satisfied in the railway vehicle 2 and can be identified from a timestamp in the state information. The time after a predetermined time has elapsed since the precondition is satisfied refers to the time when a predetermined time has elapsed since the precondition was satisfied in the railway vehicle 2. Such a predetermined time differs for each test pattern and is specified by the determination condition. The test pattern used for the test is transmitted from the test pattern acquisition unit 27, and the determination condition is included in this test pattern. Therefore, when it is determined that a precondition is satisfied based on the determination result transmitted from the precondition determination unit 30, the determination condition determination unit 40 determines whether the determination condition included in the test pattern transmitted from the test pattern acquisition unit 27 is satisfied using state information having a timestamp after a predetermined time has elapsed since the precondition was satisfied in the railway vehicle 2. The result of the determination by the determination condition determination unit 40 is transmitted to the evaluation unit 50, which will be described later.

[0030] In addition, if the judgment result transmitted from the prerequisite judgment unit 30 indicates that the prerequisite is not met, the judgment condition judgment unit 40 may transmit the judgment result that the prerequisite and judgment condition are not met to the evaluation unit 50 described later.

[0031] The evaluation unit 50 evaluates the state of the railway vehicle 2 based on the judgment result by the judgment condition judgment unit 40. That is, if the judgment result transmitted from the judgment condition judgment unit 40 indicates that the judgment condition is met, the evaluation unit 50 evaluates the inspection item corresponding to the judgment result as normal. On the other hand, if the judgment result transmitted from the judgment condition judgment unit 40 indicates that the judgment condition is not met, the evaluation unit 50 evaluates the inspection item corresponding to the judgment result as requiring confirmation. The evaluation unit 50 may be configured to store the evaluation result in the memory unit 50A, or may be configured to display the evaluation result on the display unit 50B. Furthermore, the evaluation result may be configured to be notified by the notification unit 50C.

[0032] Next, a description will be given of the inspection patterns used by the vehicle state determination system 1. Fig. 3 shows the characteristics of the inspection patterns used in this embodiment. As shown in Fig. 3, four inspection patterns, namely, a first inspection pattern, a second inspection pattern, a third inspection pattern, and a fourth inspection pattern, are used in this embodiment.

[0033] The first test pattern is defined for each of the above-mentioned preconditions and judgment conditions, and also defines a waiting state between when the precondition is satisfied and when it is determined whether the judgment condition is satisfied. Therefore, the first test pattern is a pattern in which the preconditions, waiting states, and judgment conditions are defined.

[0034] The second test pattern is defined for each of the above-mentioned preconditions and judgment conditions, and also defines a waiting state between when the preconditions are met and when it is determined whether the judgment conditions are met, and two different waiting times are defined for this waiting state. Therefore, the second test pattern corresponds to a pattern in which two different waiting times are defined.

[0035] The third inspection pattern is used for inspections performed when status information (status information to be confirmed) corresponding to the driver's operation regarding the operation of a specific device (e.g., an alarm issued by an automatic train stop device) cannot be confirmed multiple times. When the status information cannot be confirmed multiple times, this means that the signal in question is input for a short time and cannot be recorded, making it unclear whether the operation was performed correctly. Since such a case results in a suspicious judgment, the third inspection pattern is a pattern that specifies prerequisites and judgment conditions for inspecting the operation of a specific device when there are multiple suspicious judgment results regarding the operation of the specific device. The third inspection pattern can be used not only for inspections of inspection items that require judgment when the status information to be confirmed cannot be confirmed multiple times, but also for inspections of inspection items that require judgment when the desired status information cannot be confirmed less than the first or a predetermined number of times, and can also be used for inspections of inspection items that require judgment when the desired status information is confirmed.

[0036] The fourth test pattern defines conditions set by a plurality of combinations of data (signals), such as a setting table for setting the operation of a specific device (for example, a table for setting the pressure in a brake cylinder or a table for setting the number of brake stages). Therefore, the fourth test pattern is a pattern used for judgment based on a state defined by a plurality of combinations of signals.

[0037] Next, specific examples of the first, second, third, and fourth test patterns will be described.

[0038] FIG. 4 shows the process of testing for "air leakage in air system" using the first test pattern (No. 1 in FIG. 2). In the first test pattern, information specifying at least the state of the determination signal, the state of the first reference signal, and the state of the second reference signal is used as status information. The determination signal is a signal used to determine the test item. Therefore, the state of the determination signal corresponds to the state of the signal used to determine the test item. If the signal is an analog signal, the state of the signal corresponds to a value (analog value), and if the signal is a digital signal, the state corresponds to a digital value (0 or 1). The first reference signal is a signal referenced in determining the test item. Furthermore, the second reference signal is a signal different from the first reference signal and corresponds to a signal referenced in determining the test item. Therefore, in the first test pattern, at least the determination signal, the first reference signal, and the second reference signal are used. Note that, depending on the test item, signals different from those in this example (e.g., a third reference signal) may be used as the determination signal, the first reference signal, and the second reference signal.

[0039] In addition, multiple types of signals may be used for one inspection item as the determination signal, first reference signal, and second reference signal. In the example of FIG. 4, two determination signals are used: a signal indicating the state of a "first source air damper pressure" and a signal indicating the state of a "second source air damper pressure." The source air damper pressure corresponds to the air pressure that is the source of the air pressure used for braking pressure, opening and closing doors, etc. In FIG. 4, the first source air damper pressure indicates the source air damper pressure of one of two railcars 2 included in one train (train configuration), and the second source air damper pressure indicates the source air damper pressure of the other of two railcars 2 included in one train (train configuration). In the example of FIG. 4, a "digital signal" is listed as the first reference signal, but multiple types of signals may be used. Furthermore, in the example of FIG. 4, a signal indicating the state of a "first brake pressure," a signal indicating the state of a "second brake pressure," and a signal indicating the state of a "parking brake pressure" are used as the "second reference signal."

[0040] In the first test pattern, the preconditions are defined based on at least the state of the determination signal and the state of the first reference signal. In the example of FIG. 4, the preconditions are defined as the determination signals, namely, the "first main air damper pressure" and the "second main air damper pressure," each within a range of "P1 [Pa] to P2 [Pa]." The preconditions are also defined as the preconditions that the "digital signal" serving as the first reference signal has a fixed value of "0 or 1" depending on the signal. The preconditions do not define the "first brake pressure," "second brake pressure," or "parking brake pressure" used as the second reference signal. Therefore, in the example of FIG. 4, the precondition determination unit 30 determines that the precondition for "air leakage in the air system" is met if the "first main air damper pressure" is within a range of "P1 [Pa] to P2 [Pa]," the "second main air damper pressure" is within a range of "P1 [Pa] to P2 [Pa]," and the "digital signal" is at a preset fixed value.

[0041] For ease of understanding, in the following explanation, including the explanation of this example, the parts where conditions are specified, i.e., the parts used as conditions, are shown in gray. The state in other ranges (ranges not colored gray) is not particularly specified and can be anything.

[0042] A standby state is entered from the fulfillment of the preconditions until a predetermined time has elapsed, and when the system transitions to this standby state, the value of the "first source air damper pressure" is set to the reference value of the "first source air damper pressure", and the value of the "second source air damper pressure" is set to the reference value of the "second source air damper pressure". In addition, the value of the "first brake pressure", which is the second reference signal, is set to the initial value of the "first brake pressure", and the value of the "second brake pressure", which is the second reference signal, is set to the initial value of the "second brake pressure".

[0043] In the standby state of the first test pattern, at least the state of the first reference signal and the state of the second reference signal are specified. In the example of FIG. 4, the predetermined time for the standby state is set in advance (e.g., t1 [seconds]). During this predetermined time, it is specified that the "first brake pressure" "fluctuation amount from the initial value is within a predetermined range," and it is specified that the "second brake pressure" "fluctuation amount from the initial value is within a predetermined range." In the example of FIG. 4, the predetermined range for the first brake pressure is indicated by THP1. Furthermore, the predetermined range for the second brake pressure is indicated by THP2. Furthermore, it is specified that the "parking brake pressure" "does not change value" throughout the standby state, and it is specified that the "digital signal" "maintains a fixed value" in the precondition. In this standby state, if these specifications are met over the predetermined time, the determination condition determination unit 40 determines whether the determination condition is met.

[0044] The judgment condition is defined based on the state of the judgment signal corresponding to the test item after a predetermined time has elapsed. In the example of FIG. 4, the judgment condition is defined as the value of the "first main air damper pressure" being "a decrease from a reference value within a predetermined value," and the value of the "second main air damper pressure" being "a decrease from a reference value within a predetermined value." In the example of FIG. 4, the decrease from a reference value of the first main air damper pressure is indicated by ΔP1, and the predetermined value is indicated by THP3. Furthermore, the decrease from a reference value of the second main air damper pressure is indicated by ΔP2, and the predetermined value is indicated by THP4. Therefore, the judgment condition determining unit 40 determines that the judgment condition is met when ΔP1, which is the decrease from a reference value (i.e., the value of the "first main air damper pressure" at the time of entering the standby state), is within the predetermined value THP3, and when ΔP2, which is the decrease from a reference value (i.e., the value of the "second main air damper pressure" at the time of entering the standby state), is within the predetermined value THP4. On the other hand, if ΔP1, which is the amount of decrease from the reference value that is the value of the "first source air damage pressure" at the time of entering the standby state, is not within the predetermined value of THP3, or if ΔP2, which is the amount of decrease from the reference value that is the value of the "second source air damage pressure" at the time of entering the standby state, is not within the predetermined value of THP4, it is determined that the judgment condition is not met. Note that the "first brake pressure," "second brake pressure," "parking brake pressure," and "digital signal" are not specified as judgment conditions.

[0045] The judgment result of the judgment condition judgment unit 40 is transmitted to the evaluation unit 50. If the judgment result of the judgment condition judgment unit 40 is that the judgment condition is met, the evaluation unit 50 evaluates that the "air leak in the air system" is normal, and if the judgment result of the judgment condition judgment unit 40 is that the judgment condition is not met, the evaluation unit 50 evaluates that the "air leak in the air system" needs to be checked.

[0046] FIG. 5 shows the processing of "Air Compressor Accumulation Time" using the first test pattern (No. 15 in FIG. 2). In the example of FIG. 5, information specifying the state of the determination signal, the state of the first reference signal, the state of the second reference signal, and the state of the third reference signal is used as status information. As described above, the determination signal is a signal used to determine the test item. Furthermore, the first reference signal is a signal referenced in determining the test item, and the second reference signal is a signal different from the first reference signal and is a signal referenced in determining the test item. The third reference signal is a signal different from the first reference signal and the second reference signal and is a signal referenced in determining the test item.

[0047] In the example of Fig. 5, a signal indicating the state of the "compressor on contactor" is used as the determination signal. Also, in the example of Fig. 5, a "digital signal" is listed as the first reference signal, but multiple types of signals may be used. Furthermore, in the example of Fig. 5, a signal indicating the state of the "brake pressure," a signal indicating the state of the "air spring pressure," and a signal indicating the state of the "parking brake pressure" are used as the "second reference signal," and a signal indicating the state of the "main air damper pressure" is used as the "third reference signal."

[0048] In the example of FIG. 5, the precondition is that the state of the "compressor on contactor," which is the judgment signal, is "0." Furthermore, the precondition is that the "digital signal," which is the first reference signal, is a fixed value of "0 or 1" depending on the signal. Furthermore, the precondition is that the "main air dam pressure," which is the third reference signal, is equal to or greater than "P3 [Pa]." Therefore, in the example of FIG. 5, when the state of the "compressor on contactor" is "0," the "digital signal" is at a preset fixed value, and the "main air dam pressure" is equal to or greater than "P3 [Pa]," the precondition determination unit 30 determines that the precondition for the "air compressor accumulation time" is met.

[0049] In the example of Fig. 5, the standby state is entered when the state of the "compressor on contactor" changes from "0" to "1." When entering this standby state, the value of "brake pressure" is set to the initial value of "brake pressure," and the value of "air spring pressure" is set to the initial value of "air spring pressure."

[0050] In the example of FIG. 5, it is specified that the "brake pressure" in the standby state "has a variation amount relative to its initial value within a predetermined range," and it is also specified that the "air spring pressure" in the standby state "has a variation amount relative to its initial value within a predetermined range." In the example of FIG. 5, the predetermined range for the brake pressure is indicated by THP5. Also, the predetermined range for the air spring pressure is indicated by THP6. Also, it is specified that the "parking brake pressure" is "0," and that the "digital signal" "maintains a fixed value." Also, in the example of FIG. 5, the time TCM during which the state of the "compressor on contactor" in the standby state is "1" is counted. When the state of the "compressor on contactor" becomes "0" in the standby state, the determination condition determination unit 40 determines whether the determination condition is met. On the other hand, in the standby state, if at least one of the other signals (the "digital signal," the signal indicating the state of the "brake pressure," the signal indicating the state of the "air spring pressure," the signal indicating the state of the "parking brake pressure," and the signal indicating the state of the "main air damper pressure") no longer meets the above-mentioned standby state specifications, the inspection is terminated.

[0051] 5, the judgment condition is specified as the time TCM (counting result) when the state of the "compressor-on contactor" in the standby state is "1" being "less than a predetermined time." Therefore, the judgment condition determining unit 40 determines that the judgment condition is met when the time TCM (counting result) is "less than a predetermined time," and determines that the judgment condition is not met when the time TCM (counting result) is not "less than a predetermined time."

[0052] The judgment result of the judgment condition judgment unit 40 is transmitted to the evaluation unit 50. When the judgment result of the judgment condition judgment unit 40 indicates that the judgment condition is met, the evaluation unit 50 evaluates that the "air compressor accumulation time" is normal, and when the judgment result of the judgment condition judgment unit 40 indicates that the judgment condition is not met, the evaluation unit 50 evaluates that the "air compressor accumulation time" requires confirmation.

[0053] Next, the second test pattern will be described. Figure 6 shows the process of testing related to "emergency train stop device operation" using the second test pattern (No. 4 in Figure 2). In the second test pattern, at least information specifying the state of the determination signal, the state of the first reference signal, and the state of the second reference signal is also used as status information.

[0054] In the example of FIG. 6, a signal indicating the state of an "indicator light" is used as the determination signal. Furthermore, a signal indicating the state of a "reset operation", a signal indicating the state of a "train set speed", and a signal indicating the state of a "cab selection 'before'" (the state of the signal that defines the front of the vehicle's traveling direction) are used as first reference signals. Furthermore, a signal indicating the state of a "brake notch operation", a signal indicating the state of a plurality of "nth data lines" (where n=1-7), a signal indicating the state of a "powering notch operation", and a signal indicating the state of an "electronic alarm" are used as "second reference signals".

[0055] In the second test pattern, the preconditions are defined based on the state of the determination signal, the state of the first reference signal, and the state of the second reference signal. In the example of FIG. 6, the preconditions are defined as follows: the signal indicating the state of the "indicator light" is "0," the signal indicating the state of the "reset operation" is "0," the signal indicating the state of the "train set speed" is "v1" or greater, and the signal indicating the state of the "before cab selection" is "1." The preconditions also include the signal indicating the state of the "brake notch operation" has "changed from 0 to 1 or from 1 to 0," the signals indicating the states of multiple "nth data lines" (where n=1-7) have "changed from 0 to 1 or from 1 to 0," the signal indicating the state of the "powering notch operation" has "changed from 0 to 1 or from 1 to 0," and the signal indicating the state of the "electronic alarm" has "changed from 1 to 0." Although not shown in the figure, it is sufficient if at least one of the signals indicating the state of the "reset operation", the signal indicating the state of the "brake notch operation", the signal indicating the state of the "nth data line" (where n=1-7), and the signal indicating the state of the "electronic alarm" satisfies the above condition. Therefore, in the example of Fig. 6, if any one of the signals indicating the state of the "reset operation", the signal indicating the state of the "brake notch operation", the signal indicating the state of the "nth data line" (where n=1-7), and the signal indicating the state of the "electronic alarm" satisfies the above condition, and if the signals indicating the state of the "indicator light", the signal indicating the state of the "reset operation", and the signal indicating the state of the "train set speed" all satisfy the above condition, the precondition determination unit 30 determines that the precondition for "emergency train stop device operation" is met.

[0056] A standby state is established from the fulfillment of the precondition until a predetermined time has elapsed. This standby state is defined based on at least two standby times: a first standby time and a second standby time. The first standby time is the time during which the determination signal remains in the state it was in when the precondition was fulfilled, and the second standby time is the time during which the determination signal remains in the state it was in when the first standby time elapsed until it changes state. In the example of FIG. 6, the signal indicating the state of the "indicator light" is defined to be "0 during t2" and to change to "1 within t3 after t2 has elapsed." Therefore, in this case, t2 corresponds to the first standby time, and t3 corresponds to the second standby time.

[0057] Furthermore, in the standby state in the second test pattern, it is specified that the signal indicating the state of the "reset operation" is "0", that the signal indicating the state of the "train set speed" is "v1" or greater, and that the signal indicating the state of the "before cab selection" is "1". It is also specified that the signal indicating the state of the "brake notch operation", the signals indicating the states of the multiple "nth data lines" (where n=1-7), and the signal indicating the state of the "powering notch operation" are "unchanged", and that the signal indicating the state of the "electronic alarm" is "0". When these specifications are met in this standby state, the determination condition determination unit 40 determines whether or not the determination conditions are met.

[0058] The judgment condition is defined based on the state of the judgment signal corresponding to the test item after a predetermined time has elapsed. In the example of Fig. 6, the judgment condition is defined as the signal indicating the state of the "indicator light" being "1". Therefore, the judgment condition determining unit 40 determines that the judgment condition is met when the signal indicating the state of the "indicator light" is "1", and determines that the judgment condition is not met when the signal indicating the state of the "indicator light" is not "1".

[0059] The judgment result of the judgment condition judgment unit 40 is transmitted to the evaluation unit 50. If the judgment result of the judgment condition judgment unit 40 is that the judgment condition is met, the evaluation unit 50 evaluates that the "emergency train stop device operation" is normal, and if the judgment result of the judgment condition judgment unit 40 is that the judgment condition is not met, the evaluation unit 50 evaluates that the "emergency train stop device operation" requires confirmation.

[0060] Next, the third inspection pattern will be described. The third inspection pattern is an inspection pattern for inspecting inspection items that require inspection when the expected status information cannot be confirmed a preset number of times. Specifically, for example, an automatic train stop device mounted on a railway vehicle 2 automatically slows or stops the railway vehicle 2 according to the signal aspect and track conditions. A test signal is transmitted from a test machine to the on-board coil at predetermined intervals. In response to this, the driver performs a confirmation procedure consisting of pressing a confirmation switch and operating the service brake, and then presses a reset switch. However, if the reset switch is pressed quickly, depending on the signal sampling period, a record of the reset operation indicating that the switch was pressed may not be retained as status information. The third inspection pattern is used in such cases when no record of the reset operation is retained a predetermined number of times (e.g., five times) in succession.

[0061] Fig. 7 shows the test process for "ATS-SW confirmation handling" using the third test pattern (No. 3 in Fig. 2). In the third test pattern, at least information specifying the state of the determination signal and the state of the first reference signal is used as the state information.

[0062] In the example of Fig. 7, a signal indicating the state of "automatic train stop device alarm" is used as the judgment signal. In addition, a signal indicating the state of "automatic train stop device confirmation switch", a signal indicating the state of multiple "nth high-speed input data" (where n=1-4), a signal indicating the state of "train set speed", and a signal indicating the state of "before cab selection" are used as the first reference signals.

[0063] In the third test pattern, the preconditions are defined based on the state of the determination signal and the state of the first reference signal. In the example of FIG. 7, the preconditions are defined as follows: the signal indicating the "automatic train stop device alarm" state is "0," the signal indicating the "automatic train stop device confirmation switch" state is "0," the signal indicating the "train set speed" state is "v1 or greater," and the signal indicating the "before cab selection" state is "1." Therefore, in the example of FIG. 7, when all of the above conditions are met, the precondition determination unit 30 determines that the precondition for "ATS-SW confirmation handling" is met. In the example of FIG. 7, when the signal indicating the "automatic train stop device alarm" state changes from "0" to "1," the train transitions to a standby state.

[0064] The system is in a standby state from when the precondition is met until a predetermined time has elapsed. This predetermined time may be, for example, several hundred milliseconds, or may be the same as the sampling period of the above-mentioned signals. In the example of FIG. 7, the system waits until the signal indicating the status of the "automatic train stop device alarm" changes from "1" to "0" or until the signal indicating the status of the "automatic train stop device confirmation switch" changes from "0" to "1." When a predetermined time (e.g., 0.2 seconds) has elapsed since either of these changes, the determination condition determination unit 40 determines whether the determination condition is met.

[0065] The judgment condition is defined based on the state of the judgment signal corresponding to the inspection item after a predetermined time has elapsed since the precondition was satisfied. In the example of FIG. 7, the judgment condition is defined as the signal indicating the state of the "automatic train stop device alarm" being "0" and any one of the signals indicating the states of the multiple "nth high-speed input data" (where n = 1-4) being "1". Therefore, the judgment condition determining unit 40 determines that the judgment condition is satisfied when the signal indicating the state of the "automatic train stop device alarm" is "0" and any one of the signals indicating the states of the multiple "nth high-speed input data" (where n = 1-4) is "1". However, if the signal indicating the state of the "automatic train stop device alarm" is not "0" or if all of the signals indicating the states of the multiple "nth high-speed input data" (where n = 1-4) are "0", the judgment condition determining unit 40 determines that the judgment condition is not satisfied.

[0066] The judgment result of the judgment condition judgment unit 40 is transmitted to the evaluation unit 50. If the judgment result of the judgment condition judgment unit 40 is that the judgment condition is met, the evaluation unit 50 evaluates that "ATS-SW confirmation treatment" is normal, and if the judgment result of the judgment condition judgment unit 40 is that the judgment condition is not met, the evaluation unit 50 evaluates that "ATS-SW confirmation treatment" requires confirmation.

[0067] Next, the fourth test pattern will be described. The fourth test pattern is a test pattern used when testing one state of a test object according to a combination of the states of multiple determination signals. Specifically, for example, a powering handle (main handle) mounted on a railway vehicle 2 is configured to be switchable to one of multiple notches (e.g., six stages), and the pressure states of multiple (e.g., five) data lines are configured to change according to the state (position) of the notch (a table showing such pressure states is called a "powering stage number table"). This makes it possible to identify the state (position) of a notch based on the states (pressure states) of multiple (e.g., five) data lines. Furthermore, the pressure states of the data lines in each notch are configured such that the signal states of at least two of the multiple data lines are different from each other. Therefore, when the pressure on one data line that should be pressurized is released in a specific notch state, a combination that does not exist will be found in the relationship between the notch and the state of the data lines. As a result, in the fourth test pattern, if a combination that should exist in the relationship between the notch and the state of the data line is detected, it can be determined that there is no abnormality in the function of the main controller, and if a combination that should not exist in the relationship between the notch and the state of the data line is detected, it can be determined that there is an abnormality in the function of the main controller.

[0068] Fig. 8 shows the process of the test related to the "powering handle powering command" using the fourth test pattern (No. 9 in Fig. 2). In the fourth test pattern, information specifying the state of the determination signal and the state of the first reference signal is used as the state information.

[0069] In the example of Figure 8, the signals used for determination are a signal indicating the state of the "5th data line," a signal indicating the state of the "6th data line," a signal indicating the state of the "7th data line," a signal indicating "powering notch operation," a signal indicating the state of "forward 1 notch," and a signal indicating the state of "reverse 1 notch," and the first reference signal is a signal indicating the state of "cab selection "forward"."

[0070] In the fourth test pattern, the preconditions are defined based on the state of the determination signal and the state of the first reference signal. In the example of FIG. 8, the preconditions are defined as follows: the signal indicating the state of the "5th data line," the signal indicating the state of the "6th data line," the signal indicating the state of the "7th data line," the signal indicating the state of the "first forward notch," and the signal indicating the state of the "first reverse notch" are "values ​​consistent with the powering gear table." Furthermore, the signal indicating the "before cab selection" state is defined as "1." Therefore, in the example of FIG. 8, when all of the above conditions are met, the precondition determination unit 30 determines that the precondition for the "powering handle powering command" is met. In the example of FIG. 8, when the state of at least one of the multiple determination signals changes, the system transitions to a standby state.

[0071] A standby state is established from the establishment of the preconditions until a predetermined time has elapsed. This predetermined time may be, for example, several seconds. In this standby state, the signal indicating the state of the "5th data line," the signal indicating the state of the "6th data line," the signal indicating the state of the "7th data line," the signal indicating the state of the "powering notch operation," the signal indicating the state of the "first forward notch," and the signal indicating the state of the "first reverse notch" are "unchanged." Furthermore, the signal indicating the state of the "before cab selection" is "1." Therefore, when a predetermined time has elapsed in the above state after transitioning to the standby state, the determination condition determination unit 40 determines whether the determination condition is established.

[0072] The judgment condition is determined based on the state of the judgment signal corresponding to the inspection item after a predetermined time has elapsed since the precondition was satisfied. In the example of FIG. 8, the judgment condition is determined as follows: the signal indicating the state of the "5th data line," the signal indicating the state of the "6th data line," the signal indicating the state of the "7th data line," the signal indicating the state of the "powering notch operation," the signal indicating the state of the "forward first notch," and the signal indicating the state of the "reverse first notch" "match the powering gear table." The signal indicating the state of the "cab selection 'before'" may also be anything. Therefore, the judgment condition determining unit 40 determines that the judgment condition is satisfied when the state of each judgment signal is as described above, and determines that the judgment condition is not satisfied when the state of each judgment signal is not as described above.

[0073] The judgment result of the judgment condition judgment unit 40 is transmitted to the evaluation unit 50. When the judgment result of the judgment condition judgment unit 40 indicates that the judgment condition is satisfied, the evaluation unit 50 evaluates that the "powering handle powering command" is normal, and when the judgment result of the judgment condition judgment unit 40 indicates that the judgment condition is not satisfied, the evaluation unit 50 evaluates that the "powering handle powering command" requires confirmation.

[0074] The vehicle state determination system 1 inspects the inspection object using the inspection pattern according to the inspection item as described above.

[0075] The results of the inspection using the inspection pattern are evaluated by the evaluation unit 50 as described above. FIG. 9 shows an example of the evaluation results displayed on the display screen of the display unit 50B. FIG. 9 shows an example in which the inspection item is "ATS-SW check." As shown in FIG. 9, the following items are displayed at the top of the display screen, from left to right: "Latest Determination Date and Time," which indicates the date and time of the most recent inspection; "Vehicle," which indicates the railcar 2 that was inspected; "Inspection Item," which indicates the inspection item; "Number of Days Elapsed Since Previous Pass Determination," which indicates the number of days since the last inspection that resulted in a normal evaluation result; and "Evaluation Result," which indicates the current evaluation result. The details of each item are displayed below each item. Specifically, "January 20, 2022" is displayed as the "Latest Determination Date and Time," and "123 Series" is displayed as the "Vehicle." The "Inspection Item" is "ATS-SW check," and the "Number of Days Elapsed Since Previous Pass Determination" is "70 days." The "Evaluation Result" is displayed as "Good."

[0076] Below the above items on the display screen, the status information used in this evaluation is shown. In the example of FIG. 9, eight signals included in the status information used in "ATS-SW confirmation treatment" are shown. In this status information, the timing at which it was determined that the preconditions were met is shown as "21:48:00." A standby state is entered for a predetermined time from the time the preconditions were met. After this standby state has elapsed, it is determined whether the judgment conditions are met. In the example of FIG. 9, since the judgment conditions are met, "good" is shown as the "evaluation result." By displaying the evaluation results of the evaluation unit 50 in this manner, it is possible to notify the evaluation results.

[0077] Other Embodiments In the above embodiment, the test patterns are described as including the first test pattern, the second test pattern, the third test pattern, and the fourth test pattern, but the test patterns may be configured to include at least one of the first test pattern, the second test pattern, the third test pattern, and the fourth test pattern, or may be configured to include test patterns other than these. Furthermore, the prerequisites and judgment conditions for each test pattern can be changed as appropriate.

[0078] In the above embodiment, specific inspection items are exemplified for each inspection pattern, but it is also possible to configure the inspection to be performed by applying an inspection pattern different from the exemplified inspection pattern to the inspection items exemplified in the embodiment.

[0079] In the above embodiment, the first test pattern, the second test pattern, the third test pattern, and the fourth test pattern have been described using the judgment signal, the first reference signal, the second reference signal, and the third reference signal as examples of the prerequisite, the standby condition, and the judgment condition, respectively. These are merely examples, and for example, the judgment signal for a specific test item can be used as a reference signal (e.g., the first reference signal) for another test item, or for example, the reference signal (e.g., the first reference signal) for a specific test item can be used as a judgment signal or another reference signal (e.g., the first reference signal) for another test item. In other words, the judgment signal, the first reference signal, and the second reference signal can each be arbitrarily specified by the user depending on the test item.

[0080] In the above embodiment, the vehicle state determination system 1 has been described as including the evaluation unit 50, but it is also possible to configure the system without including the evaluation unit 50. Furthermore, when the system is configured without including the evaluation unit 50, the evaluation result by the evaluation unit 50 described above may be output by the vehicle state determination system 1 (for example, stored, displayed, or notified) as the determination result of the vehicle state determination system 1, or may be output by the determination condition determination unit 40 (for example, stored, displayed, or notified). Of course, it may also be configured to be output by another functional unit. [Industrial Applicability]

[0081] The present invention can be used in a vehicle state determination system that determines the state of a railway vehicle. [Explanation of symbols]

[0082] 1: Vehicle condition determination system 2: Railway vehicles 4: State information storage unit 10: Test pattern storage unit 20: Status information acquisition unit 30:Prerequisite judgment part 40: Judgment condition judgment section

Claims

1. A vehicle state determination system for determining a state of a railway vehicle, an inspection pattern storage unit in which inspection patterns are stored in advance, the inspection patterns defining preconditions that trigger inspection and judgment conditions that judge whether the inspection object is normal, for each inspection item that inspects the inspection object on the railway vehicle; a status information acquisition unit that acquires status information from a status information storage unit that stores status information indicating the status of the railway vehicle that is sequentially transmitted from the railway vehicle in operation; a precondition determination unit that determines whether the precondition is satisfied based on the state information acquired from the state information storage unit; a judgment condition judgment unit that, when it is judged that the precondition is satisfied, judges whether or not the judgment condition is satisfied based on the state information after a preset time has elapsed since the precondition was satisfied, the state information is defined by at least a state of a determination signal used to determine the test item, a state of a first reference signal referred to in determining the test item, and a state of a second reference signal that is a signal different from the first reference signal and referred to in determining the test item, The test pattern is the precondition is defined based on at least a state of the determination signal and a state of the first reference signal; During a period from when the precondition is satisfied until a predetermined time has elapsed, at least a state of the first reference signal and a state of the second reference signal are defined; A vehicle state determination system having a first inspection pattern in which the determination condition is defined based on the state of the determination signal corresponding to the inspection item after the predetermined time has elapsed.

2. A vehicle state determination system for determining the state of a railway vehicle, comprising: an inspection pattern storage unit in which inspection patterns are stored in advance, the inspection patterns defining preconditions that trigger inspection and judgment conditions that judge whether the inspection object is normal, for each inspection item that inspects the inspection object on the railway vehicle; a status information acquisition unit that acquires status information from a status information storage unit that stores status information indicating the status of the railway vehicle that is sequentially transmitted from the railway vehicle in operation; a precondition determination unit that determines whether the precondition is satisfied based on the state information acquired from the state information storage unit; a judgment condition judgment unit that, when it is judged that the precondition is satisfied, judges whether or not the judgment condition is satisfied based on the state information after a preset time has elapsed since the precondition was satisfied, the state information is defined by at least a state of a determination signal used to determine the test item, a state of a first reference signal referred to in determining the test item, and a state of a second reference signal that is a signal different from the first reference signal and referred to in determining the test item, The test pattern is the precondition is defined based on a state of the determination signal, a state of the first reference signal, and a state of the second reference signal; The period from when the precondition is satisfied until the predetermined time has elapsed is determined based on at least a first waiting time during which the determination signal waits in the state at the time when the precondition is satisfied, and a second waiting time during which the determination signal waits until the state of the determination signal changes after the first waiting time has elapsed, A vehicle state determination system having a second inspection pattern in which the determination condition is defined based on the state of the determination signal corresponding to the inspection item after the predetermined time has elapsed.

3. A vehicle state determination system for determining the state of a railway vehicle, comprising: an inspection pattern storage unit in which inspection patterns are stored in advance, the inspection patterns defining preconditions that trigger inspection and judgment conditions that judge whether the inspection object is normal, for each inspection item that inspects the inspection object on the railway vehicle; a status information acquisition unit that acquires status information from a status information storage unit that stores status information indicating the status of the railway vehicle that is sequentially transmitted from the railway vehicle in operation; a precondition determination unit that determines whether the precondition is satisfied based on the state information acquired from the state information storage unit; a judgment condition judgment unit that, when it is judged that the precondition is satisfied, judges whether or not the judgment condition is satisfied based on the state information after a preset time has elapsed since the precondition was satisfied, the state information is defined by a state of a determination signal used to determine the test item and a state of a first reference signal that is referenced in the determination of the test item, the inspection pattern includes a third inspection pattern for inspecting the inspection item that needs to be inspected when the desired status information cannot be confirmed a predetermined number of times, The third test pattern is the precondition is defined based on a state of the determination signal and a state of the first reference signal; A vehicle state determination system in which the determination condition is defined based on the state of the determination signal corresponding to the inspection item after a predetermined time has elapsed since the prerequisite condition was met.

4. A vehicle state determination system for determining the state of a railway vehicle, comprising: an inspection pattern storage unit in which inspection patterns are stored in advance, the inspection patterns defining preconditions that trigger inspection and judgment conditions that judge whether the inspection object is normal, for each inspection item that inspects the inspection object on the railway vehicle; a status information acquisition unit that acquires status information from a status information storage unit that stores status information indicating the status of the railway vehicle that is sequentially transmitted from the railway vehicle in operation; a precondition determination unit that determines whether the precondition is satisfied based on the state information acquired from the state information storage unit; a judgment condition judgment unit that, when it is judged that the precondition is satisfied, judges whether or not the judgment condition is satisfied based on the state information after a preset time has elapsed since the precondition was satisfied, the state information is defined by a state of a determination signal used to determine the test item and a state of a first reference signal that is referenced in the determination of the test item, the test pattern includes a fourth test pattern that tests one state of the test object according to a combination of states of the plurality of determination signals, The fourth test pattern is the precondition is defined based on a state of the determination signal and a state of the first reference signal; A vehicle state determination system, wherein the determination condition is defined based on the state of the determination signal.

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