JP6077702B2 - Railway vehicle type determination system, railway vehicle type determination method - Google Patents

Description

  The present invention relates to a technique for determining a type of a railway vehicle.

Conventionally, various methods have been proposed as a method for determining the type of railway vehicle.
For example, there is a method in which a monitoring camera is installed along the line, and the type of the railway vehicle is determined from an image of a passing vehicle taken by the monitoring camera.

  In addition, there is a method of installing an ID tag on the railroad vehicle side and installing an ID tag reader on the ground side to read vehicle information such as a vehicle type when passing the railroad vehicle (for example, see Patent Document 1).

  In addition, there is a method in which an ultrasonic sensor is installed on the ground side, and the type of the railway vehicle is determined based on shape information detected by the ultrasonic sensor.

JP 2008-140020 A

However, the above technique has the following problems.
First, in the method using the above-described monitoring camera, it may be difficult to determine the type of railway vehicle due to rain or snow appearing in an image during heavy rain or snowfall. That is, the method using the monitoring camera has a problem that it is easily influenced by weather conditions when determining the type of the railway vehicle.

Moreover, in the method using the above-described ID tag, there is a problem in that it is not possible to identify all types of railway vehicles because the railway vehicles equipped with the ID tags are limited.
Further, in the method using the above-described ultrasonic sensor, since the response is not high due to the characteristics of the ultrasonic sensor, it is difficult to determine the type of railway vehicle that travels at a speed other than extremely low speed. For this reason, in the method using an ultrasonic sensor, there existed a problem that it was limited to the determination of the classification of the rail vehicle which drive | works at a very low speed.

  The present invention has been made in view of such problems, and an object of the present invention is to provide a technique capable of determining the type of a railway vehicle under various environments.

  The railway vehicle type determination system of the present invention made to solve the above problems is a railway vehicle type determination system that determines the type of a railway vehicle, and includes a temperature value acquisition unit, a feature amount calculation unit, and a determination criterion calculation. And a type determination unit.

  The temperature value acquisition unit acquires a very warm part temperature value and a small temperature change part temperature value from under the floor of the railway vehicle. The very warm region temperature value is the temperature value of the very warm region. The very warm part is a part where the temperature change is relatively large among the temperature change parts which are parts where the temperature changes during operation of the railway vehicle. The small temperature change part temperature value is a temperature value of the small temperature change part. A small temperature change part is a part with a relatively small temperature change among temperature change parts.

The feature amount calculation unit calculates a feature amount indicating a feature of the very hot region temperature value based on the very hot region temperature value acquired by the temperature value acquisition unit.
The determination criterion calculation unit calculates a determination criterion that is a criterion for determining the type of the railway vehicle based on the small temperature change part temperature value acquired by the temperature value acquisition unit.

  The type determination unit compares the feature amount calculated by the feature amount calculation unit with the determination criterion calculated by the determination criterion calculation unit, and the feature value satisfies the determination criterion. The very hot part position is specified based on the timing when the temperature value is acquired, and the type of the railway vehicle is determined according to the specified extremely hot part position. The very hot part position is the position of the very hot part under the floor of the railway vehicle.

  According to the railway vehicle type determination system of the present invention configured as described above, a railway vehicle in a very hot region where the temperature change during operation of the railway vehicle is relatively large based on the temperature value acquired from under the floor of the railway vehicle. The position of the very hot part that is the position under the floor of the vehicle is specified, and the type of the railway vehicle is determined according to the specified position of the very hot part. The temperature value obtained from the underfloor of the railway vehicle is used to identify the location of such a very hot part, but the temperature value obtained from the underfloor of the railway vehicle is less susceptible to disturbances such as heavy rain and snowfall. The determination of the type of railway vehicle is less sensitive to weather conditions such as heavy rain and snowfall. Moreover, even if the vehicle is not equipped with an ID tag, the temperature value can be acquired from under the floor of the railway vehicle, so the type of the railway vehicle can be determined. Moreover, since the temperature value can be acquired from under the floor of the railway vehicle even in a speed range other than extremely low speed, the type of the railway vehicle can be determined.

Therefore, according to the railway vehicle type determination system of the present invention, the type of the railway vehicle can be determined under various environments.
As specific methods for determining the type of railway vehicle, the following methods (1) to (2) are conceivable.

  (1) A railway vehicle is composed of an electric vehicle and an accompanying vehicle. The very warm part is arranged in the electric vehicle. The small temperature change part is arranged in the accompanying vehicle. The feature amount calculation unit calculates an average value of the very hot region temperature values as the feature amount. The determination criterion calculation unit uses a value obtained by subtracting the deviation multiple value from the average value of the small temperature variation part temperature values as a lower limit value, and a range having a value obtained by adding the deviation multiple value to the average value as an upper limit value. calculate. The deviation multiple value is a coefficient multiple of the standard deviation of the small temperature change part temperature value. The type determination unit determines that the determination criterion is satisfied when the feature amount is smaller than the lower limit value of the determination criterion or larger than the upper limit value.

  (2) A railway vehicle is composed of an electric vehicle and an accompanying vehicle. The very warm part and the small temperature change part are arranged in the accompanying vehicle. The feature amount calculation unit calculates an average value of the very hot region temperature values as the feature amount. The determination criterion calculation unit calculates an average value of the small temperature variation region temperature values as a determination criterion. The type determination unit determines that the determination criterion is satisfied when the deviation value, which is a value that deviates from the determination criterion, is larger than the reference value. The reference value is a value for determining the type of railway vehicle.

  In addition, this invention is realizable also as a railway vehicle classification determination method.

It is a block diagram which shows schematic structure of a railway vehicle classification determination system.

Embodiments of the present invention will be described below with reference to the drawings. In addition, this invention is not limited to the following embodiment, It is possible to implement in various aspects.
The railway vehicle type determination system 1 shown in FIG. 1 has a function of determining the type of a railway vehicle formed from an electric vehicle and an accompanying vehicle.

[1. Description of configuration of railway vehicle type determination system 1]
The railway vehicle type determination system 1 includes a device temperature sensor 11, a device part detection unit 12, a data collection processing unit 13, a characteristic temperature calculation unit 14, a device arrangement recording unit 15, and a characteristic temperature statistic calculation unit 16. A feature amount comparison unit 17, a discrimination threshold recording unit 18, and a type determination result output unit 19.

  The railway vehicle type determination system 1 is equipped with a computer composed of a well-known CPU, ROM, RAM, I / O that is an input / output circuit, a bus line that connects these configurations, and the like. The CPU functions as the data collection processing unit 13, the characteristic temperature calculation unit 14, the characteristic temperature statistic calculation unit 16, and the characteristic amount comparison unit 17, and the RAM functions as the device arrangement recording unit 15 and the discrimination threshold recording unit 18 described above. To do.

  Further, the CPU performs control according to control programs and data stored in the ROM and RAM. The ROM has a program storage area and a data storage area. A control program is stored in the program storage area, and data necessary for the operation of the control program is stored in the data storage area. In addition, the control program operates on the RAM in a form in which the work memory is a work area.

[1.1. Description of Configuration of Device Temperature Sensor 11]
The equipment temperature sensor 11 is arranged on the ground side where the track (track) is laid, corresponding to each side of the railway vehicle that is a train traveling on the track, and detects radiant heat from under the floor of the rail vehicle. Measure the temperature of various parts such as gearboxes.

  More specifically, the device temperature sensor 11 has a configuration in which an infrared radiation thermometer is built in the housing, and the infrared radiation thermometer is adapted to the intensity of infrared rays (energy) emitted from an object having temperature. By detecting the amount), temperature values of various parts such as a gear box are measured in a non-contact manner from under the floor of each vehicle of the railway vehicle passing through the track.

  The device temperature sensor 11 starts the above-described measurement when a preset measurement start time is reached according to an instruction from the CPU, and ends the measurement when the preset measurement end time is reached.

Then, the device temperature sensor 11 outputs the measured temperature value to the data collection processing unit 13.
The device temperature sensor 11 is an example of a temperature value acquisition unit of the present invention.
[1.2. Description of Configuration of Device Part Detection Unit 12]
The device part detection unit 12 outputs a signal when the flange portion of the wheel approaches, and can accurately detect the passing timing of the wheel without contact. Examples of such a non-contact detection method include a high frequency induction method and a photoelectric method.

The device part detection unit 12 outputs information on the detected wheel passage timing to the data collection processing unit 13.
[1.3. Description of Configuration of Data Collection Processing Unit 13]
The data collection processing unit 13 collects information regarding the temperature value measured by the device temperature sensor 11 and the wheel passage timing detected by the device part detection unit 12.

The data collection processing unit 13 outputs the collected information to the characteristic temperature calculation unit 14.
[1.4. Description of Configuration of Feature Temperature Calculation Unit 14]
The characteristic temperature calculation unit 14 calculates the characteristic temperature as follows based on the temperature value measured by the device temperature sensor 11 and the information related to the passing timing of the wheel detected by the device part detection unit 12.

Specifically, the characteristic temperature calculation unit 14 calculates the gear box passage timing based on the wheel passage timing detected by the device part detection unit 12 and the moving speed of the railway vehicle calculated from the wheel passage timing. The characteristic temperature calculation unit 14 refers to the equipment arrangement under the floor for each type of railway vehicle recorded in the equipment arrangement recording unit 15, and the temperature from under the floor measured by the equipment temperature sensor 11 for each type of the railway vehicle. The characteristic temperature associated with the type of railway vehicle is calculated by selecting the temperature value at the passage timing of the gear box from the value.

Further, the characteristic temperature calculation unit 14 calculates the passing timing of the eddy current disk brake based on the wheel passing timing detected by the device part detecting unit 12 and the moving speed of the railway vehicle calculated from the wheel passing timing. The characteristic temperature calculation unit 14 refers to the equipment arrangement under the floor for each type of railway vehicle recorded in the equipment arrangement recording unit 15, and the temperature of the equipment under the floor measured by the equipment temperature sensor 11 for each type of the railway vehicle. The characteristic temperature associated with the type of railway vehicle is calculated by selecting the temperature value at the passing timing of the eddy current disk brake from the value.

The characteristic temperature calculation unit 14 outputs the calculated characteristic temperature to the characteristic temperature statistic calculation unit 16.
[1.5. Description of Configuration of Device Arrangement Recording Unit 15]
The equipment arrangement recording unit 15 records the equipment arrangement under the floor for each type of railway vehicle.

[1.6. Description of Configuration of Feature Temperature Statistics Calculation Unit 16]
The characteristic temperature statistic calculation unit 16 calculates the characteristic temperature statistic as follows.
Specifically, the characteristic temperature statistic calculation unit 16 calculates the average value of the temperature values of the gear box installed under the floor of the electric vehicle as the characteristic amount. In addition, the gear box installed under the floor of an electric vehicle corresponds to a very hot region. The very warm bed part is a part where the temperature change is relatively large among the temperature change parts which are parts where the temperature changes during operation of the railway vehicle.

  Further, the feature temperature statistic calculation unit 16 calculates the average value of the temperature values of the eddy current disc brakes installed under the floor of the accompanying vehicle as the feature amount. In addition, the eddy current disk brake installed under the floor of an accompanying vehicle corresponds to a very hot region.

The characteristic temperature statistic calculation unit 16 sets the lower limit value to a value obtained by subtracting the deviation multiple value from the average value of the temperature values of the small temperature change sites that are relatively low temperature changes among the temperature change sites. A range having an upper limit value obtained by adding the deviation multiple value to the average value is calculated as a criterion. The deviation multiple value is a coefficient multiple (here, twice) of the standard deviation σ of the temperature value. The determination criterion calculated in this way is stored in the determination threshold value recording unit 18, and it is determined whether or not the characteristic temperature is based on the temperature value measured at the very hot region, for example, 700 series or N700. Used to determine the type of railway vehicle such as a train. For example, a gear box installed under the floor of an accompanying vehicle corresponds to a small temperature change part.

The characteristic temperature statistic calculation unit 16 is an average value of the temperature values of parts other than the very hot part such as an eddy current disk brake installed under the floor of the accompanying vehicle, and an upper limit value of a deviation amount from the average value. A determination criterion is calculated based on the deviation upper limit value . The determination criterion calculated in this way is stored in the determination threshold value recording unit 18, and it is determined whether or not the characteristic temperature is based on the temperature value measured at the very hot part. Used to determine the type of vehicle. In this case, a site other than the very hot site, corresponds to the Shohen temperature site.

The feature temperature statistic calculation unit 16 outputs the calculated feature temperature statistic to the feature amount comparison unit 17.
The feature temperature statistic calculation unit 16 is an example of a feature amount calculation unit and a determination criterion calculation unit according to the present invention.

[1.7. Description of Configuration of Feature Quantity Comparison Unit 17]
The feature amount comparison unit 17 compares the feature amount as the statistic of the feature temperature calculated by the feature temperature statistic calculation unit 16 with the determination criterion as the determination threshold recorded by the determination threshold recording unit 18. Specifically, the feature amount comparison unit 17 compares the feature amount calculated by the feature temperature statistic calculation unit 16 with the determination criterion recorded by the discrimination threshold recording unit 18, and the feature amount satisfies the determination criterion. In addition, the type of railway vehicle is determined from the correspondence with the feature amount .

For example, the feature amount comparison unit 17 determines the type of the railway vehicle using the following methods (1) to (3).
(1) The feature amount comparison unit 17 determines that the type of the railway vehicle is 700 series in the following case. That is, the feature amount comparison unit 17 assumes that the type of railway vehicle is 700 series. For example, the feature quantity calculated from the temperature value of a gear box installed under the floor of the electric vehicle is 700 series railway. when satisfying the calculated criterion for determining the vehicle, i.e., is larger than the upper limit value of less than or the criterion than the lower limit value of the acceptance criteria, the type of the railway vehicle is at 700 system judge. The determination criteria may be different for each type of railway vehicle.

(2) The feature amount comparison unit 17 determines that the type of the railway vehicle is 700 series in the following case. That is, the feature amount comparison unit 17 assumes that the type of the railway vehicle is 700 series. For example, the feature quantity calculated from the temperature value of the eddy current disc brake installed under the floor of the associated vehicle is 700 series. when satisfying the calculated criterion for determining the rail vehicle, i.e., when the deviation value of the feature amount from the mean value of Shohen temperature site temperature value is greater than the divergence upper limit, the type of railway vehicle There is judged to be a 700 system.

The feature amount comparison unit 17 is an example of a type determination unit of the present invention.
[1.8. Description of the configuration of the discrimination threshold recording unit 18]
The discrimination threshold recording unit 18 records the judgment criterion calculated by the feature temperature statistic calculation unit 16 as a discrimination threshold.

[1.9. Explanation of Configuration of Type Determination Result Output Unit 19]
The type determination result output unit 19 outputs a determination result obtained by determining the type of railway vehicle. For example, the determination result of determining the type of railway vehicle is displayed on a display device such as a monitor.

[3. Effects of the embodiment]
(1) As described above, according to the railway vehicle type determination system 1 of the present embodiment, an extremely hot part having a relatively large temperature change during operation of the railway vehicle is based on the temperature value acquired from under the railcar. The position of the very hot part that is the position under the floor of the railway vehicle is specified, and the type of the railway vehicle is determined according to the specified position of the very hot part. The temperature value obtained from the underfloor of the railway vehicle is used to identify the location of such a very hot part, but the temperature value obtained from the underfloor of the railway vehicle is less susceptible to disturbances such as heavy rain and snowfall. The determination of the type of railway vehicle is less sensitive to weather conditions such as heavy rain and snowfall. Moreover, even if the vehicle is not equipped with an ID tag, the temperature value can be acquired from under the floor of the railway vehicle, so the type of the railway vehicle can be determined. Moreover, since the temperature value can be acquired from under the floor of the railway vehicle even in a speed range other than extremely low speed, the type of the railway vehicle can be determined.

Therefore, according to the railway vehicle type determination system 1 of the present embodiment, the type of the railway vehicle can be determined under various environments.
[4. Other Embodiments]
As mentioned above, although one Embodiment of this invention was described, this invention is not limited to the said embodiment, It is possible to implement in the following various aspects.

  (1) In the above embodiment, the feature amount calculated from the temperature value of the gear box installed under the floor of the electric vehicle is used to determine the type of the railway vehicle. Other configurations may be used as long as the temperature change during the operation of the vehicle is relatively large. For example, a feature amount calculated from a temperature value of a joint installed under the floor of the electric vehicle may be used, or a feature amount calculated from a temperature value of a motor installed under the floor of the electric vehicle may be used. .

  (2) In the above embodiment, in order to determine the type of railway vehicle, the feature amount calculated from the temperature value of the eddy current disk brake installed under the floor of the accompanying vehicle is used. However, the present invention is not limited to this. As long as the temperature change during the operation of the railway vehicle is relatively small, another configuration may be used.

  DESCRIPTION OF SYMBOLS 1 ... Railway vehicle classification determination system, 11 ... Equipment temperature sensor, 12 ... Equipment part detection part, 13 ... Data collection process part, 14 ... Feature temperature calculation part, 15 ... Equipment arrangement recording part, 16 ... Feature temperature statistic calculation part , 17... Feature amount comparison unit, 18... Discrimination threshold recording unit, 19.

Claims (6)

A railway vehicle type determination system that is arranged on the ground side where the track is laid and determines the type of the railway vehicle that travels on the track ,
A measurement unit for detecting the radiant heat from under the floor of the railway vehicle and measuring the temperature of various parts;
A detection unit for detecting a passing timing of a wheel included in the railway vehicle;
The equipment arrangement recording unit that records the equipment arrangement of the underfloor equipment of the railway vehicle with respect to the position of the wheel for each vehicle type that is the type of the railway vehicle, and
Wherein a portion where the temperature variation is relatively large the equipment floor is arranged among the thermocline site is a site where the temperature changes during operation of the rail vehicle as a very hot site, the wheels detected by the detecting unit Based on the passage timing and the moving speed of the railway vehicle calculated from the passage timing of the vehicle, with reference to the equipment arrangement recorded in the equipment arrangement recording unit, the railway vehicle is one of the vehicle types Assuming, from the temperature value representing the measurement result in the measurement unit, select a very warm site temperature value that is a temperature value measured at the passage timing of the very warm site, based on the very warm site temperature value, A feature amount calculation unit for calculating a feature amount for each vehicle type ;
A temperature value measured at a passage timing of the small temperature change portion from a temperature value representing a measurement result in the measurement unit, with a portion having a relatively small temperature change among the temperature change portions as a small temperature change portion. This is a reference for selecting whether or not the characteristic value is calculated based on the temperature value of the very warm region based on the small temperature variation region temperature value. A criterion calculation unit for calculating a criterion;
Feature amount calculated by the feature calculation unit, if it meets the criteria calculated by the criterion calculation unit, when the vehicle type associated with the said characteristic amount is the type of the rail vehicle A type determining unit for determining;
A railway vehicle type determination system comprising: In the railway vehicle type determination system according to claim 1,
Before SL feature amount calculation unit calculates the average value of the very hot site temperature value as the feature quantity,
The determination criterion calculation unit sets a value obtained by subtracting a deviation multiple value that is a coefficient multiple of a standard deviation of the small temperature change part temperature value from the average value of the small temperature change part temperature value as a lower limit, and the average A range having an upper limit value obtained by adding the deviation multiple value to the value is calculated as the determination criterion,
The classification determination unit determines that the determination criterion is satisfied when the feature amount is smaller than the lower limit value or larger than the upper limit value of the determination criterion. In the railway vehicle type determination system according to claim 1,
Before SL feature amount calculation unit calculates the average value of the very hot site temperature value as the feature quantity,
The determination criterion calculation unit calculates, as the determination criterion, a range determined by an upper limit value of the deviation amount from an average value of the small temperature change part temperature values,
The type determination unit determines that the determination criterion is satisfied when a deviation value, which is a value at which the feature value deviates from the determination criterion, is larger than the upper limit value . A rail vehicle type determination method for determining a type of a rail vehicle that is disposed on the ground side where the track is laid and travels on the track ,
Detecting radiant heat from under the floor of the railway vehicle, measuring the temperature of various parts,
Detecting the passing timing of the wheels provided in the railway vehicle,
As very warm site site the equipment floor temperature change is relatively large is disposed within the thermocline site is a site where the temperature changes during operation of the rail vehicle, sensed passing timing and the of the wheel Based on the moving speed of the railway vehicle calculated from the passing timing of the vehicle, refer to the equipment arrangement of the underfloor equipment of the railway vehicle based on the position of the wheel recorded for each vehicle type that is the type of the railway vehicle Then, assuming that the railway vehicle is one of the vehicle types, a very hot part that is a temperature value measured at a passage timing of the very hot part from a temperature value that represents a measurement result in the measurement unit Select a temperature value, calculate the feature value for each vehicle type based on the very warm part temperature value ,
A temperature change measured at the passage timing of the small temperature change portion from a temperature value representing a measurement result by the measurement, with a portion having a relatively small temperature change among the temperature change portions as a small temperature change portion. A criterion that is a criterion for selecting a temperature region temperature value and determining whether the feature value is calculated from the temperature value of the very warm region based on the small temperature variation region temperature value To calculate
When the calculated feature value satisfies the calculated determination criterion , it is determined that the vehicle type associated with the feature value is the type of the rail vehicle. . In the rail vehicle classification determination method according to claim 4,
The previous SL average of very hot site temperature value is calculated as the feature quantity,
A value obtained by subtracting a deviation multiple value that is a coefficient multiple of a standard deviation of the small temperature change portion temperature value from the average value of the small temperature change portion temperature value is set as a lower limit value, and the deviation multiple value is added to the average value. A range with the added value as the upper limit is calculated as the criterion,
The railway vehicle type determination method, wherein when the feature amount is smaller than the lower limit value or larger than the upper limit value of the determination criterion, it is determined that the determination criterion is satisfied. In the rail vehicle classification determination method according to claim 4,
The previous SL average of very hot site temperature value is calculated as the feature quantity,
A range determined by the deviation upper limit value that is the upper limit of the deviation amount from the average value of the small temperature change part temperature value is calculated as the determination criterion,
A railway vehicle type determination method, wherein the determination value is determined to satisfy the determination criterion when a deviation value, which is a value that deviates from the determination criterion, is larger than the deviation upper limit value .

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