JP6345943B2 - Deterioration detecting device for track electric vehicle and electric vehicle - Google Patents

Description

  The present invention relates to a deterioration detection device that detects deterioration of components of a track traveling electric vehicle that travels on a track by driving wheels with a motor, and a track traveling electric vehicle.

  An electric vehicle traveling on a track travels by supplying power to a motor from a power rail provided inside the rail (Patent Document 1). Such an electric vehicle running on a track is also called an APM (Automated People Mover), and mainly serves as a transportation system in an urban area as a transportation system having an intermediate scale between a train and a bus.

JP 2013-128380 A

An electric vehicle running on a track is a component (parts) constituting various devices such as a power receiving unit that receives power from a power rail, an inverter that converts received DC to AC, a motor that is fed from an inverter, and a wheel that receives power from the motor. ) And a controller that controls the traveling of the vehicle using each component.
The controller receives detection data such as voltage, current, frequency, temperature, and rotation speed from each component, and issues a command to the component based on the detection data to control the traveling of the track-driven electric vehicle.
The controller detects a failure based on whether or not the received detection data exceeds a predetermined threshold, and when the failure occurs, the controller makes an emergency stop.
The controller has a log function for recording detection data, and the log is referred to during maintenance. If a value that can be determined to lead to a failure is recorded in the log, the part is replaced or repaired.

However, if the aging of the parts progresses faster than expected, a failure may occur before the next maintenance time comes. Since the degree of progress of deterioration varies depending on the use environment, it is difficult to appropriately set the initial maintenance time of the electric vehicle running on the track delivered to the site.
Accordingly, an object of the present invention is to provide a deterioration detection device and a track traveling electric vehicle that can prevent a failure of the track traveling electric vehicle by detecting the deterioration of the device parts of the track traveling electric vehicle. And

  The deterioration detection device for a track electric vehicle according to the present invention is a deterioration detection device for a track electric vehicle that travels on a track, and repeats physical quantity detection data related to components included in the track electric vehicle while traveling on a track. It is determined whether or not the detection data detected at the same position deviates from the normal range of the detection data defined by accumulating the detection data at each position on the trajectory and the detection data acquisition unit to be acquired The normal range determination unit includes a normal range determination unit, a normal range update unit that updates the normal range, and a deterioration detection unit that detects that the component has deteriorated when the normal range is shifted to a predetermined threshold. When the detected data deviates from the normal range, a deviation flag is set, the detected data is acquired while waiting for a predetermined period, and the normal range update unit detects while waiting by the normal range determination unit If departing again over data from the normal range, and updates the normal range by the detection data when erected the departure flag.

According to the deterioration detection device of the present invention, the deterioration of the component is detected when the normal range shifted with the progress of the deterioration of the component is shifted to the threshold value at which maintenance is desired.
The normal range of the detection data is updated with the detection data detected during operation. Here, even if the detection data deviates from the normal range, the normal range is not immediately updated and the process waits. If a deviation occurs again during standby, it is determined that the deviation has occurred due to deterioration over time, and the normal range is updated using the detected data that has deviated. By doing so, it is possible to avoid updating the normal range with an abnormal value caused by disturbances, etc. rather than aged deterioration.
In this way, maintaining the normal range in a state corresponding to the degree of progress of component deterioration, and detecting deterioration based on whether or not the normal range has shifted to the threshold, it is possible to suppress erroneous detection and accurately detect component deterioration. Can do.
When deterioration of a component is detected according to the present invention, maintenance can be performed and countermeasures such as repair and replacement of the component can be taken, so that occurrence of a failure during operation can be prevented in advance.

  The present invention relates to a deterioration detection device for a track-driven electric vehicle that travels on a track, a detection data acquisition unit that repeatedly acquires detection data of physical quantities related to components included in the track-driven electric vehicle while traveling on a track, and a track A threshold determination unit that determines whether or not the detection data detected at the same position exceeds a predetermined deterioration threshold set for each position above, and a deterioration detection unit that detects that the component has deteriorated The threshold determination unit sets a standby flag when the detection data exceeds the deterioration threshold, acquires the detection data while waiting for a predetermined period, and the deterioration detection unit is in standby by the threshold determination unit. If the detection data exceeds the deterioration threshold by a predetermined number of times, it is detected that the component has deteriorated.

According to the deterioration detection device of the present invention, when the detection data detected at the same position exceeds the deterioration threshold corresponding to each position on the track, the deterioration of the component is detected.
Even if the detected data exceeds the deterioration threshold value, the process waits without immediately determining that it has deteriorated over time. Then, if the detected data exceeds the deterioration threshold again during standby, it is determined that it has deteriorated over time. By doing so, it is possible to avoid erroneously detecting deterioration based on an abnormal value generated by disturbance or the like rather than aging deterioration.
When deterioration of a component is detected according to the present invention, maintenance can be performed and countermeasures such as repair and replacement of the component can be taken, so that occurrence of a failure during operation can be prevented in advance.

The deterioration detection device of the present invention preferably includes an outside air temperature acquisition unit that acquires the temperature of the outside air, and a normal range correction unit that can correct the upper and lower limits of the normal range, or the deterioration threshold according to the outside air temperature. .
By doing so, the erroneous detection resulting from the change of external temperature can be suppressed.

  A track-running electric vehicle of the present invention includes the above-described deterioration detection device.

  ADVANTAGE OF THE INVENTION According to this invention, the deterioration detection apparatus which can prevent the failure of a track running electric vehicle by detecting deterioration of the apparatus components of a track running electric vehicle, and a track running electric vehicle can be provided. .

It is a mimetic diagram showing the composition of the track running electric vehicle concerning a 1st embodiment of the present invention. (A) is a graph which shows the relationship between the position on the track of a track running electric vehicle, and speed, (b) is a graph which shows the relationship between the position on the track of a track running electric vehicle, and power consumption. . It is a figure for demonstrating that a normal range gradually approaches a maintenance required threshold value. It is a figure which shows the structure of a controller. It is a figure which shows the flow of a process of deterioration detection. In the modification of this invention, it is a figure for demonstrating correct | amending a normal range using outside temperature. It is a figure which shows the structure of the controller with which the track running electric vehicle which concerns on 2nd Embodiment of this invention is provided. It is a figure which shows the flow of a process of deterioration detection.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
[First Embodiment]
A track-running electric vehicle 10 shown in FIG. 1 runs on a track (not shown) using a motor 14 as a power source, and is called an APM.
The track-driven electric vehicle 10 is automatically operated unattended along the rails under remote monitoring.
The track-driven electric vehicle 10 generally includes a pantograph 12 that receives power from a power rail 11 (overhead wire) provided inside the rail, an inverter device 13 that converts DC power received by the pantograph 12 into AC power, and an inverter device 13. Are provided with a motor 14 to which AC power is applied, a drive wheel 15 driven by the power generated by the motor 14, and a controller 20 for controlling the operation of the track traveling electric vehicle 10.
In the present embodiment, the drive wheels 15 are individually driven by the two motors 14, but both of the two drive wheels 15 can be driven by the single motor 14.

Various devices included in the electric vehicle 10 such as the pantograph 12, the inverter device 13, the motor 14, and the drive wheels 15 are each configured by a plurality of components.
For example, the inverter device 13 includes a number of circuit elements including a capacitor and a coil for removing noise from a current applied to the motor 14.
Further, the drive wheel 15 includes a rubber tire, a wheel, an encoder that detects the number of rotations, and the like.

The controller 20 receives various types of detection data detected by the inverter device 13, the motor 14, the drive wheels 15, and the like, and controls the operation of the track-driven electric vehicle 10 by issuing commands to components based on the detection data.
As detection data, for example, the voltage and current input to the inverter device 13, the voltage, current and frequency output from the inverter device 13, the temperature of each of the motors 14 and 14, the rotational speed of each of the drive wheels 15, etc. And various physical quantities.
The controller 20 operates by a built-in program and remote control.

By the way, failures such as a short circuit or disconnection in the inverter device 13 or the motor 14, a tire puncture, or a bearing abnormality may occur. In order to detect such a failure and cause the electric vehicle 10 to make an emergency stop, the controller 20 sets a failure threshold value used for failure determination for each detection data.
For example, when the tire is punctured, the current of the motor 14 increases due to an increase in friction with the rail. Therefore, it may be determined that a failure has occurred when the detection data of the current of the motor 14 exceeds the failure threshold.
A failure threshold is also set for other detection data.

  The controller 20 has a log function for recording detection data so that it can be referred to during maintenance. Based on the value recorded in the log and a predetermined threshold value, it is determined whether the part needs to be repaired or replaced. For example, the number of rotations of a wheel gradually increases due to tire wear and a decrease in air pressure. However, if the number of rotations is below a specified number of rotations (threshold), the tire is not replaced. Replace.

  The threshold value set in each detection data and the maintenance frequency of the track-driven electric vehicle 10 are preferably set appropriately by predicting the degree of aged deterioration of each component. However, since it is difficult to predict the degree of progress of deterioration that changes depending on the usage environment such as ambient temperature and humidity, it is difficult to determine an appropriate threshold and an appropriate maintenance frequency.

Therefore, there is a possibility that a failure may occur during operation because the aging of parts proceeds faster than expected between maintenance.
Therefore, in order to reliably prevent the occurrence of a failure, the deterioration of the parts leading to the failure is detected during operation.
The controller 20 detects the deterioration of the parts by using the traveling electric vehicle 10 traveling in a pattern such as a predetermined speed and current in order to travel on the track.
In the track-driven electric vehicle 10 driven along the track, a pattern such as a travel speed and power consumption is determined according to the track on which the vehicle travels. That is, at the same position on the track, the traveling speed, power consumption, torque, and the like are theoretically the same.

Fig.2 (a) shows the speed pattern with respect to the position on the track | orbit of the track traveling electric vehicle 10 in the one part area of a track | truck. In this section corresponding to the station B from the station A, the vehicle accelerates when starting from a state stopped at the station A, travels at a constant speed, then decelerates and stops at the station B.
FIG. 2B shows a pattern of power consumption with respect to a position on the track of the electric vehicle 10 running on the track in the same section as FIG. At the time of starting, a large amount of electric power corresponding to the torque required for starting is consumed. However, at the time of cruise, the power consumption is smaller than at the time of starting, and the regenerative power generated by the motor 14 is stored in the storage battery during deceleration. Turns negative.
Both the speed and the power consumption are theoretically the same at the same position of the track traveling electric vehicle 10. In addition, the output torque of the motor 14, the current flowing through the winding of the motor 14, the voltage, current, and frequency of the inverter device 13, the rotational speed of the drive wheels 15, etc. are theoretically the same at the same vehicle position.

  However, when the component deteriorates, the detection data indicating a certain range of values at the same vehicle position gradually shifts from the initial range of values. By capturing this fact, it is possible to detect the deterioration of the component.

The controller 20 determines the vehicle speed detected at each vehicle position, the power consumption, the output torque of the motor 14, the current flowing through the winding of the motor 14, the voltage, current and frequency of the inverter device 13, the rotational speed of the drive wheel 15, etc. One or more arbitrarily selected detection data can be stored in the memory.
When the detection data is accumulated by performing a running test on the track or by analyzing the running of the vehicle, a normal value range (normal range) indicated by the detection data corresponding to each position on the track is determined.
As the part gradually deteriorates, the detection data gradually shifts in one direction from the initial value range. FIG. 3 shows that the value of the normal range of the electrolytic capacitor provided in the inverter device 13 gradually increases and shifts toward the failure threshold.
In FIG. 3, the value of the normal range is shown to be constant and simplified, but actually, the value that the normal range takes varies depending on the vehicle position. Further, depending on the detection data used for the degradation index, the value gradually decreases from the range of the initial value.

  Here, it is possible to detect that the data detected during operation deviates from the initial normal range created during the test run, but in this embodiment, the normal range is determined by new data detected during operation. Is updated from time to time, and deterioration is detected when the normal range shifts to a value (maintenance threshold required) that can be determined to lead to failure. The maintenance required threshold value is set before the failure threshold value (between the normal range and the failure threshold value). In this way, by maintaining the normal range in the latest state and detecting the deterioration depending on whether the normal range has shifted to the maintenance threshold required, it is possible to suppress erroneous detection and accurately detect the deterioration of the component.

When accumulating the detection data, the track-running electric vehicle 10 with new parts or repaired parts is traveled over the entire track, and the detected data is stored in the memory, for example, every 1 m. By running the same track a plurality of times (for example, 100 times), detection data corresponding to each vehicle position is accumulated.
The vehicle position of the track-driven electric vehicle 10 is detected by the controller 20 based on the product of the rotational speed N of the drive wheels 15 and the outer circumference length L of the drive wheels 15. The rotational speed N is detected by a rotary encoder provided on one or both of the axles of the drive wheels 15 and 15.
The number of revolutions N is counted starting from the first station and is reset to zero at each station on the way. That is, the position of the track-driven electric vehicle 10 is detected as a value obtained by adding the product of N and L to the position of each known station. Thereby, since the accumulated error of the rotational speed N can be eliminated, the accuracy of the vehicle position is maintained.

When the detection data is accumulated, the normal range is determined by removing the abnormal value from the accumulated data and determining the upper and lower limits corresponding to each vehicle position. A maintenance required threshold is set between the normal range and the failure threshold.
In addition, when the track traveling electric vehicle 10 reaches the terminal station, the traveling direction of the vehicle is turned. Since the speed and power consumption patterns at each position on the track are different between the forward path and the return path, detection data accumulation and determination of the normal range are performed for each of the forward path and the return path.
As described above, when the normal range is determined, the operation is ready.

In order to realize the emergency stop function, the detection data log function, and the deterioration detection function when a failure occurs, the controller 20 has a detection data acquisition unit 21 and a function of making an emergency stop as shown in FIG. An emergency stop unit 22, a log creation unit 23 that creates a log in which detection data is recorded, a normal range / deviation determination unit 24, a normal range update unit 25, a deterioration detection unit 26, and a deterioration notification unit 27; And a memory 28.
The detection data acquisition unit 21, the normal range / deviation determination unit 24, the normal range update unit 25, the deterioration detection unit 26, the deterioration notification unit 27, and the memory 28 constitute a deterioration detection device 30.

Hereinafter, the step of detecting deterioration of parts of the track-driven electric vehicle 10 by the deterioration detection device 30 will be described with reference to FIG.
The detection data acquisition unit 21 of the controller 20 acquires detection data used as an indicator of component deterioration at each vehicle position corresponding to the detection data used to determine the normal range (detection data acquisition step S11).
Then, the normal range / deviation determination unit 24 determines whether the detected data is within the normal range at the corresponding vehicle position or deviates (within normal range / deviation determination step S12).
If the detected data is within the normal range (N in S12), the deterioration detection process is interrupted. A process returns to step S11 which acquires detection data.

  On the other hand, if the detected data deviates from the normal range (Y in S12), the normal range / deviation determination unit 24 first determines whether it is due to deterioration over time or due to disturbance. Then, a flag indicating that the vehicle has deviated is set, and the update of the normal range based on the detected data is suspended. (Departure flag setting step S13). The flag is held in the memory 28.

Thereafter, only within a predetermined time or a predetermined section (for example, up to the next station), the normal range / deviation determination unit 24 waits while acquiring detection data (standby step S14).
During standby, it is determined whether or not the detected data deviates from the normal range again (re-departure confirmation step S15).
If the detected data does not deviate from the normal range throughout the standby period (N in step S15) and the standby is completed (Y in step S16), the detected data that deviated from the normal range first is an abnormal value due to disturbance. Since it can be determined, the normal range is not updated by the detected data. The normal range / deviation determination unit 24 resets the deviation flag (deviation flag reset step S17). The occurrence of a disturbance (N in step S15) can be notified by display on the console of the vehicle, an alarm sound, or the like, if necessary. Moreover, you may record information, such as a vehicle position and time at which disturbance occurred, in a log as needed.
In parallel with the degradation detection process described here, emergency stop due to failure detection and processing related to the log of each detection data are also performed, so the emergency stop function of the vehicle when a large disturbance occurs is guaranteed. Has been.

  On the other hand, if the detection data deviates from the normal range again during standby (Y in step S15), it can be determined that the detection data deviating from the normal range and the detection data deviating this time are caused by aging. . In order to reflect the aging deterioration in the normal range, the normal range update unit 25 updates the normal range with reference to the detected data (normal range update step S18). Specifically, if the detected data exceeds the upper limit of the normal range, the upper limit of the normal range is updated with the detected data, and if the detected data is lower than the lower limit of the normal range, the lower limit of the normal range is updated with the detected data.

Subsequent to the normal range update step S18, the deterioration detection unit 26 detects the deterioration of the component by determining whether or not the updated normal range is shifted to the maintenance required threshold (deterioration detection step S19). .
The determination criterion here can be arbitrarily determined. For example, when the center value of the upper limit and the lower limit of the normal range has reached the maintenance-required threshold, it can be detected that the component is deteriorated. it can.
When the deterioration of the component is detected in the deterioration detection step S19, the deterioration notification unit 27 notifies that effect by displaying it on the console of the vehicle or by sounding an alarm (deterioration notification step S20). By this notification, it is possible to take appropriate measures such as checking at the stop station or requesting early maintenance.

  According to the present embodiment, as described above, it is possible to accurately detect and detect deterioration of a component in which the detected value of the physical quantity of the component gradually shifts from the initial normal value range. As a result, maintenance can be carried out and parts can be repaired, replaced, etc., so that it is possible to contribute to preventing the occurrence of failures during operation.

It is preferable that the deterioration detection device 30 has a function of correcting the normal range of detection data.
For example, as shown in FIG. 6B, the fixed amount α can be added to or subtracted from the upper limit of the normal range, and the fixed amount β can be added to or subtracted from the lower limit of the normal range. By correcting in this way, erroneous detection can be prevented.
In particular, it is effective to correct the normal range when detecting deterioration of parts using detection data that varies depending on the surrounding environment while the electric vehicle 10 running on the track is traveling.

For example, when using detection data that changes according to the temperature of the outside air, it is preferable to correct the upper limit and the lower limit of the normal range according to the outside air temperature as necessary.
In that case, as shown to Fig.6 (a), in the deterioration detection apparatus 30, the external temperature acquisition part 31 which acquires the temperature of external air, the component temperature acquisition part 32 which acquires the temperature of the components which detect data, and normal A normal range correction unit 33 that corrects the range can be provided.
When the outside air temperature rises (or falls), the part temperature rises (or falls), and the value indicated by the detection data of the part changes as the part temperature changes. Therefore, the normal range may be corrected to an appropriate value based on the correlation between the acquired outside air temperature, the component temperature, and the detection data. By doing so, the influence of the outside air temperature on the detection data can be reduced, so that the accuracy of deterioration detection can be improved.

[Second Embodiment]
Next, a second embodiment of the present invention will be described with reference to FIGS. Hereinafter, a description will be given focusing on differences from the first embodiment. The same code | symbol is attached | subjected to the structure similar to the structure of 1st Embodiment.
In the second embodiment, aged deterioration of a component is detected using a predetermined deterioration threshold at each position on the track.
When a part deteriorates, the detection data which showed the same value in the same vehicle position will shift gradually. It is the same as that of 1st Embodiment to detect deterioration of components by catching this.

The track traveling electric vehicle of this embodiment includes a deterioration detection device 40 built in the controller 20 shown in FIG.
The deterioration detection device 40 includes a threshold value determination unit 41 and a deterioration detection unit 42.

The threshold determination unit 41 determines whether or not the detection data repeatedly acquired by the detection data acquisition unit 21 during the track travel exceeds a deterioration threshold corresponding to the same track position.
Here, the detection data gradually shifts in one direction as the component gradually deteriorates. Taking the temperature of the electrolytic capacitor provided in the inverter device 13 as an example, the value of the detection data gradually increases. Taking the number of rotations of the wheel as an example, the value of the detection data gradually decreases due to tire wear or a decrease in air pressure. That is, the direction exceeding the deterioration threshold is determined according to each detection data.
A deterioration threshold value shifted in a predetermined direction is determined with respect to a normal value indicated by detection data corresponding to each position on the track by performing a track running test or by analyzing the vehicle running.
Then, the threshold determination unit 41 determines whether or not the detected data exceeds the deterioration threshold in a predetermined direction.
The threshold determination unit 41 sets a standby flag when the detection data exceeds the deterioration threshold, and acquires the detection data while waiting for a predetermined period.

  The deterioration detection unit 42 detects that the component has deteriorated if the detection data again exceeds the deterioration threshold during standby by the threshold determination unit 41.

Hereinafter, the step of detecting deterioration of parts of the track-driven electric vehicle by the deterioration detection device 40 will be described with reference to FIG.
The detection data acquisition unit 21 of the controller 20 acquires detection data used as an indicator of component deterioration at each vehicle position corresponding to the detection data used to determine the deterioration threshold (detection data acquisition step S11).
Then, the threshold determination unit 41 determines whether or not the detected data exceeds the deterioration threshold at the corresponding vehicle position (threshold determination step S21).
If the detected data does not exceed the deterioration threshold (N in S21), the deterioration detection process is interrupted. A process returns to step S11 which acquires detection data.

  On the other hand, if the detected data exceeds the deterioration threshold (Y in S21), the threshold determination unit 41 first exceeds the deterioration threshold in order to determine whether it is due to aging deterioration or disturbance. A determination is put on hold by setting a standby flag indicating that this is the case. (Standby flag setting step S22). The standby flag is held in the memory 28.

Thereafter, the threshold determination unit 41 stands by while acquiring detection data only for a predetermined time or a predetermined section (for example, to the next station) (standby step S14).
During standby, it is determined whether or not the detected data exceeds the deterioration threshold again (over-check step S23).
If the detection data does not exceed the deterioration threshold throughout the standby period (N in step S23) and the standby ends (Y in step S16), it is determined that the detection data that has previously exceeded the deterioration threshold is an abnormal value due to disturbance. Because it can, it is not judged that it has deteriorated. The threshold determination unit 41 resets the standby flag (standby flag reset step S24).

On the other hand, if the detected data exceeds the deterioration threshold again during standby (Y in step S23), the deterioration detecting unit 42 determines that the aging has occurred and detects the deterioration of the component (deterioration detecting step). S25).
During standby, it may be determined that aged deterioration has occurred when the detection data exceeds the deterioration threshold a predetermined number of times, for example, twice or three times.
When the deterioration of the component is detected in the deterioration detection step S25, the deterioration notification unit 27 notifies the fact by displaying it on the console of the vehicle or by sounding an alarm (deterioration notification step S20).
As a result, maintenance can be carried out and countermeasures such as repair and replacement of parts can be taken, so that it is possible to contribute to preventing occurrence of failures during operation.

It is preferable that the deterioration detection device 40 of the present embodiment has a function of correcting the deterioration threshold.
For example, when using detection data that changes according to the temperature of the outside air, it is preferable to correct the deterioration threshold according to the outside air temperature as necessary.
By correcting the deterioration threshold to an appropriate value based on the correlation between the outside air temperature acquired during traveling, the component temperature, and the detection data, the influence of the outside air temperature on the detection data can be reduced. The accuracy of deterioration detection can be improved.

  In addition to the above, as long as the gist of the present invention is not deviated, the configuration described in the above embodiment can be selected or changed to another configuration as appropriate.

DESCRIPTION OF SYMBOLS 10 Track running electric vehicle 11 Power rail 12 Pantograph 13 Inverter device 14 Motor 15 Drive wheel 20 Controller 21 Detection data acquisition part 22 Emergency stop part 23 Log creation part 24 Normal range / deviation determination part 25 Normal range update part 26 Deterioration detection part 27 Degradation notification unit 28 Memory 30, 40 Degradation detection device 41 Threshold determination unit 42 Degradation detection unit S11 Detection data acquisition step S12 Normal range / deviation determination step (normal range determination step)
S13 Deviation flag setting step S14 Standby step S15 Re-departure confirmation step S17 Deviation flag reset step S18 Normal range update step S19 Deterioration detection step S20 Deterioration notification step

Claims (4)

A deterioration detection device for an electric vehicle running on a track,
While traveling on the track, a detection data acquisition unit that repeatedly acquires detection data of physical quantities related to the parts included in the track electric vehicle,
A normal range determination unit that determines whether or not the detection data detected at the same position deviates from the normal range of the detection data defined by accumulating the detection data at each position on the trajectory; ,
A normal range updater for updating the normal range;
A deterioration detecting unit that detects that the component has deteriorated when the normal range is shifted to a predetermined threshold; and
The normal range determination unit
When the detection data deviates from the normal range, set a departure flag, obtain the detection data while waiting for a predetermined period,
The normal range update unit
Updating the normal range with the detection data when the deviation flag is set if the detection data deviates from the normal range again during standby by the normal range determination unit;
A deterioration detection device for an electric vehicle running on a track, characterized in that. A deterioration detection device for an electric vehicle running on a track,
While traveling on the track, a detection data acquisition unit that repeatedly acquires detection data of physical quantities related to the parts included in the track electric vehicle,
A threshold determination unit that determines whether or not the detection data detected at the same position exceeds a predetermined deterioration threshold determined at each position on the trajectory;
A deterioration detector that detects that the component has deteriorated,
The threshold determination unit
When the detection data exceeds the deterioration threshold, a standby flag is set, the detection data is acquired while waiting for a predetermined period,
The deterioration detector is
Detecting that the component has deteriorated if the detection data exceeds the deterioration threshold a predetermined number of times during standby by the threshold determination unit;
A deterioration detection device for an electric vehicle running on a track, characterized in that. An outside air temperature acquisition unit for acquiring the temperature of the outside air;
An upper limit and a lower limit of the normal range, or a normal range correction unit capable of correcting the deterioration threshold according to an outside air temperature,
The deterioration detection device for an electric vehicle traveling on a track according to claim 1 or 2. Comprising the deterioration detecting device according to any one of claims 1 to 3,
An electric vehicle traveling on a track.

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