CN116242506A - Fault detection method, device, equipment and storage medium of temperature sensor - Google Patents

Fault detection method, device, equipment and storage medium of temperature sensor Download PDF

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Publication number
CN116242506A
CN116242506A CN202310215512.9A CN202310215512A CN116242506A CN 116242506 A CN116242506 A CN 116242506A CN 202310215512 A CN202310215512 A CN 202310215512A CN 116242506 A CN116242506 A CN 116242506A
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temperature
detected
temperature data
target
temperature sensor
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Chinese (zh)
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高洋
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Shanghai Cool Air Transport Refrigeration Equipment Co ltd
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Shanghai Cool Air Transport Refrigeration Equipment Co ltd
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Priority to CN202310215512.9A priority Critical patent/CN116242506A/en
Publication of CN116242506A publication Critical patent/CN116242506A/en
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K15/00—Testing or calibrating of thermometers
    • G01K15/007—Testing
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K13/00—Thermometers specially adapted for specific purposes
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K3/00—Thermometers giving results other than momentary value of temperature
    • G01K3/02—Thermometers giving results other than momentary value of temperature giving means values; giving integrated values
    • G01K3/06—Thermometers giving results other than momentary value of temperature giving means values; giving integrated values in respect of space
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K3/00—Thermometers giving results other than momentary value of temperature
    • G01K3/08—Thermometers giving results other than momentary value of temperature giving differences of values; giving differentiated values

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  • General Physics & Mathematics (AREA)
  • Measuring Temperature Or Quantity Of Heat (AREA)

Abstract

The application provides a fault detection method, a fault detection device, a fault detection control device and a computer readable storage medium of a temperature sensor, wherein the fault detection method comprises the following steps: under the condition that a door of a target carriage of the rail transit vehicle is closed and the temperature of the target carriage is stable, acquiring temperature data acquired by two temperature sensors to be detected in the target carriage; acquiring carriage temperature data corresponding to a target carriage of a rail transit vehicle; and under the condition that the difference value between the temperature data of the two temperature sensors to be detected exceeds a first set deviation threshold value, carrying out difference value calculation according to a preset comparison rule based on the temperature data of the two temperature sensors to be detected and the temperature data of the carriage, and determining the target temperature sensor with offset fault in the two temperature sensors to be detected according to the difference value calculation result. Therefore, under the condition that the number of the temperature sensors in the carriage is limited, the temperature sensors with offset faults in the rail transit carriage are accurately and rapidly detected.

Description

Fault detection method, device, equipment and storage medium of temperature sensor
Technical Field
The present disclosure relates to the field of sensor fault detection, and in particular, to a fault detection method, apparatus, control device, and computer readable storage medium for a temperature sensor.
Background
The rail transit air conditioning system is an electromechanical integrated system with tightly matched software and hardware, and the running state of the system is monitored by different types of sensors, wherein the sensors comprise a limited number of temperature sensors in a carriage. If the temperature sensor malfunctions, the refrigerating/heating regulation effect of the rail transit air conditioning system can be greatly affected, so that the fault diagnosis for the temperature sensor is particularly important.
At present, the general fault diagnosis logic of the temperature sensor takes the measuring range of the temperature sensor as a judgment basis. When the numerical value fed back by the temperature sensor exceeds the range, diagnosing that the temperature sensor fails; and otherwise, diagnosing that the temperature sensor does not fail.
In the process of implementing the present invention, the inventor finds that at least the following problems exist in the prior art:
the temperature data fed back by the temperature sensor with offset fault does not show obvious deviation, namely the value fed back by the temperature sensor with offset fault does not exceed the range, but data offset with small amplitude occurs compared with the actual value, so that the offset fault of the temperature sensor cannot be diagnosed in a fault diagnosis mode taking the measuring range of the temperature sensor as a judgment basis, the situation is unacceptable for the rail transit air conditioning system, and the adjustment unbalance and the temperature control of the whole system are not ideal.
Therefore, it is urgent how to detect whether or not the temperature sensor has an offset failure.
Disclosure of Invention
In view of the above, the present application provides a fault detection method, apparatus, control device and computer readable storage medium for a temperature sensor, which can accurately and rapidly detect a temperature sensor having an offset fault in a rail transit carriage under the condition that the number of temperature sensors in the carriage is limited, so as to accurately remove the fault sensor subsequently, and achieve the purpose of reducing the occurrence probability of the conditions of unbalance adjustment and non-ideal temperature control of the whole system.
In order to achieve the above purpose, the technical solution of the embodiments of the present application is implemented as follows:
in a first aspect, an embodiment of the present application provides a fault detection method of a temperature sensor, including:
s21: under the condition that a door of a target carriage of the rail transit vehicle is closed and the temperature of the target carriage is stable, acquiring temperature data acquired by two temperature sensors to be detected in the target carriage;
s22: acquiring carriage temperature data corresponding to a target carriage of a rail transit vehicle;
s23, calculating the difference value according to a preset comparison rule based on the temperature data of the two temperature sensors to be detected and the temperature data of the carriage under the condition that the difference value between the temperature data of the two temperature sensors to be detected exceeds a first set deviation threshold;
And determining the target temperature sensor with offset faults in the two temperature sensors to be detected according to the difference value calculation result.
In a second aspect, an embodiment of the present application provides a fault detection device of a temperature sensor, including:
the first temperature data acquisition module is used for acquiring temperature data acquired by two temperature sensors to be detected in the target carriage under the condition that the carriage door of the target carriage of the rail transit vehicle is closed and the temperature of the target carriage is stable;
the target temperature acquisition module is used for acquiring carriage temperature data corresponding to a target carriage of the rail transit vehicle;
the first target sensor determining module is used for calculating the difference value according to a preset comparison rule based on the temperature data of the two temperature sensors to be detected and the temperature data of the carriage under the condition that the difference value between the temperature data of the two temperature sensors to be detected exceeds a first set deviation threshold value, and determining the target temperature sensor with offset fault in the two temperature sensors to be detected according to the difference value calculation result.
In a third aspect, an embodiment of the present application provides a control device, including a processor and a memory, where the memory stores a computer program executable by the processor, and when the computer program is executed by the processor, the computer program implements a fault detection method of a temperature sensor according to any embodiment of the present application.
In a fourth aspect, embodiments of the present application provide a computer readable storage medium having a computer program stored thereon, where the computer program, when executed by a controller, is configured to implement a fault detection method for a temperature sensor according to any one of the embodiments of the present application.
According to the fault detection method, device, control equipment and computer readable storage medium for the temperature sensor, provided by the embodiment of the application, the temperature data collected by the two temperature sensors to be detected in the target carriage can be obtained under the condition that the carriage door of the target carriage of the rail transit vehicle is closed and the temperature of the target carriage is stable, so that the temperature data collected by the two temperature sensors to be detected under the condition of the environmental temperature of the carriage can be used as a diagnosis basis. And acquiring carriage temperature data corresponding to the target carriage of the rail transit vehicle, and taking the carriage temperature data as reference data for fault diagnosis. And under the condition that the difference value between the temperature data of the two temperature sensors to be detected exceeds a first set deviation threshold value, carrying out difference value calculation according to a preset comparison rule based on the temperature data of the two temperature sensors to be detected and the temperature data of the carriage, and determining the target temperature sensor with offset fault in the two temperature sensors to be detected according to the difference value calculation result. Therefore, whether the target temperature sensor with offset faults exists or not is primarily judged through the difference value between the two temperature data, and the target sensor is further and accurately positioned according to the preset comparison rule, so that the temperature sensor with the offset faults in the rail transit carriage can be accurately and rapidly detected under the condition that the number of the temperature sensors is limited, the fault sensor can be accurately and accurately removed later, and the purposes of reducing the occurrence probability of the adjustment unbalance and the temperature control non-ideal condition of the whole system are achieved.
Drawings
Fig. 1 illustrates an optional application scenario schematic diagram of a rail transit air conditioning system provided in an embodiment of the present application;
fig. 2 is a schematic flow chart of a fault detection method of a temperature sensor according to an embodiment of the present application;
fig. 3 is a schematic flow chart of another fault detection method of a temperature sensor according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of a fault detection device of a temperature sensor according to an embodiment of the present application;
fig. 5 shows a schematic structural diagram of a control device according to an embodiment of the present application.
Detailed Description
The technical scheme of the application is further elaborated below by referring to the drawings in the specification and the specific embodiments.
For the purpose of making the objects, technical solutions and advantages of the present application more apparent, the present application will be described in further detail with reference to the accompanying drawings, and the described embodiments should not be construed as limiting the present application, and all other embodiments obtained by those skilled in the art without making any inventive effort are within the scope of the present application.
In the following description, reference is made to the expression "some embodiments" which describe a subset of all possible embodiments, it being noted that "some embodiments" may be the same subset or different subsets of all possible embodiments and may be combined with each other without conflict.
In the following description, the terms "first, second, third" and the like are used merely to distinguish between similar objects and do not represent a specific ordering of the objects, it being understood that the "first, second, third" may be interchanged with a specific order or sequence, as permitted, to enable embodiments of the application described herein to be practiced otherwise than as illustrated or described herein.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing embodiments of the present application only and is not intended to be limiting of the present application.
The applicant finds that the offset faults of the temperature sensor, particularly the NTC (Negative Temperature Coefficient ) temperature sensor, in the practical application scene are caused by the decrease of the resistance value of the temperature sensor due to water inflow, so that the measured value of the NTC temperature sensor is always larger. In view of this, the applicant proposes that after the temperature of the cabin is stable, the difference value calculation is performed on the temperature data collected by the two temperature sensors with the same function and the temperature data of the cabin according to a preset comparison rule, so that the temperature sensor with the larger temperature data can be determined through the difference value calculation result, and whether the temperature sensor has an offset fault or not is determined, so that the control of the whole rail transit air conditioning system can be adjusted in time.
In one aspect, an application scenario of a rail transit air conditioning system is provided. Fig. 1 shows an optional application scenario schematic diagram of a rail transit air conditioning system provided in an embodiment of the present application. As shown in fig. 1, the rail transit air conditioning system may be applied to a rail transit vehicle, wherein the rail transit air conditioning system may include an air conditioning unit 11, a control device 12, and a temperature sensor 13. Two air conditioning units 11, a control device 12 and at least two temperature sensors 13 can be provided per car of the rail vehicle.
Here, the air conditioning unit 11 may be used to adjust the cabin temperature. The control device 12 is connected to the air conditioning unit 11 and the temperature sensor 13, respectively. The temperature sensors 13 may be distributed in the air conditioning unit 11, and are used to collect temperatures of air outlets of the air conditioning unit, and send temperature data to the control device 12. The control device 12 may be configured to obtain the operation state data of the air conditioning unit 11 and the temperature data collected by the temperature sensor 13, and control the operation state of the air conditioning unit 11 according to the temperature data. It is understood that the temperature sensor 13 may employ an NTC temperature sensor.
The control device 12 may also be used for cabin temperature data determined from temperature data collected by temperature sensors in the cabin. That is, the control device 12 may be configured to take as the cabin temperature data the average temperature data of the plurality of temperature sensors in the cabin.
In some embodiments, the control device 12 may be configured to execute any one of the fault detection methods of the temperature sensor provided in the embodiments of the present application according to the temperature data collected by the temperature sensor 13 in the target cabin and the cabin temperature data corresponding to the target cabin, so as to accurately detect the target temperature sensor having an offset fault in the target cabin.
As shown in fig. 1, the control device 12 of each car may also be in network communication with a rail traffic monitoring system 14. The rail traffic monitoring system 14 may be, among other things, an apparatus for monitoring the operating state of rail traffic vehicles and the internal environmental data of each car. Here, the internal environment data may include, but is not limited to, temperature data, humidity data, and the like.
In some embodiments, the control device 12 of each car transmits temperature data to the rail traffic monitoring system 14, and the rail traffic monitoring system 14 may calculate the vehicle average temperature data from the temperature data of each car and transmit the vehicle average temperature data as the car temperature data to the control device 12 of each car.
The control device 12 of the cabin may be configured to execute any one of the fault detection methods of the temperature sensor provided in the embodiments of the present application according to the temperature data collected by the temperature sensor 13 in the target cabin and the average temperature data of the whole vehicle, so as to accurately detect the target temperature sensor having an offset fault in the target cabin.
In the above embodiment, the target car may be any car of the rail transit vehicle.
In some embodiments, the rail transit monitoring system 14 may also be configured to determine a target car from the temperature data of each car and send a temperature sensor 13 fault detection command to the control device 12 of the target car.
Here, the rail transit monitoring system may determine whether the current car has an offset fault according to the temperature data of the current car and the temperature data of the adjacent cars on both sides, and take the current car having the offset fault as the target car. That is, when the difference between the temperature data of the current car and the temperature data of the front and rear adjacent cars is large, it may be determined that the current car is the target car.
After receiving the fault detection instruction of the temperature sensor 13, the control device 12 of the target compartment starts an offset fault detection process, so as to accurately detect the target temperature sensor with the offset fault in the target compartment.
In some embodiments, after the control device 12 detects the target temperature sensor, the operating state of the air conditioning unit 11 may be controlled by the temperature sensor 13 without a fault, and the fault of the temperature sensor is reported to the rail traffic monitoring system 14.
It should be noted that the rail transit vehicle may be a vehicle including a plurality of cars, such as a subway, a train, a high-speed rail, or the like.
In one aspect of the embodiment of the present application, a fault detection method of a temperature sensor is provided, which may be applied to a control device 12 as shown in fig. 1, and may be used to detect whether an offset fault exists in a temperature sensor 13 in a target cabin of a rail transit vehicle. Fig. 2 is a schematic flow chart of a fault detection method of a temperature sensor according to an embodiment of the present application. As shown in fig. 2, the fault detection method of the temperature sensor may include S21, S22, and S23.
S21, under the condition that a door of a target carriage of the rail transit vehicle is closed and the temperature of the target carriage is stable, acquiring temperature data acquired by two temperature sensors to be detected in the target carriage.
Here, the target car may be any car of the rail transit vehicle. The closing of the compartment door can be understood as the fact that the target compartment and the outside have no extensive air convection, and the temperature in the compartment cannot be obviously fluctuated.
The target cabin temperature stabilization may be that temperature data in the target cabin does not change within a preset period of time. In the embodiment of the present application, since the cabin temperature can be kept to fluctuate in a small range after 5 minutes of heating or cooling by the cabin air conditioning unit 11, the cabin temperature can reach a steady state after 5 minutes of starting the compressor or the electric heater of the cabin air conditioning unit 11.
The temperature sensor to be detected can be a temperature sensor at any position in the carriage. Alternatively, the temperature sensor to be detected may be a resistive negative temperature coefficient sensor, i.e. the temperature sensor to be detected may be an NTC temperature sensor.
In the embodiment of the present application, the two temperature sensors to be detected acquire temperature data in real time, and the control device 12 acquires two temperature data acquired synchronously from the two temperature sensors to be detected when detecting that the door of the target carriage of the rail transit vehicle is closed and the temperature of the target carriage is stable.
It should be noted that, the temperature data acquired by the two temperature sensors to be detected at the same time may be used as two temperature data acquired synchronously. Alternatively, an average value of temperature data acquired by the two temperature sensors to be detected in the same time period may be used as the two temperature data acquired synchronously. In the implementation of the present application, the type of the two temperature data collected simultaneously is not limited.
S22, acquiring carriage temperature data corresponding to a target carriage of the rail transit vehicle.
Here, the cabin temperature data may be cabin average temperature data or vehicle average temperature data. The average temperature data of the carriage can be determined according to the temperature data collected by all the temperature sensors in the carriage, namely the average temperature data of the carriage can be the average temperature data of the temperature sensors in the carriage. The whole car average temperature data can be determined according to the temperature data of all the carriages, namely the whole car average temperature data can be the average value of the temperature data of all the carriages in the rail transit vehicle.
In the embodiment of the present application, the car temperature data may be calculated by the control device 12 of the target car, or may be determined by the rail traffic monitoring system according to the temperature data of each car, and sent to the control device 12 of the target car.
S23, under the condition that the difference value between the temperature data of the two temperature sensors to be detected exceeds a first set deviation threshold value, calculating the difference value according to a preset comparison rule based on the temperature data of the two temperature sensors to be detected and the temperature data of the carriage, and determining the target temperature sensor with offset fault in the two temperature sensors to be detected according to the difference value calculation result.
Here, the range of the first set deviation threshold may be between 5 degrees and 15 degrees, and the specific value of the first set deviation threshold is not specifically limited in the embodiment of the present application, and may be adjusted according to the actual implementation. The target temperature sensor may be a temperature sensor to be detected with offset fault, and since the target cabin temperature is stable, the temperatures of the target cabin should be the same or have small differences in theory, and the temperatures of the cabin are measured by the temperature sensor. Therefore, theoretically, the temperature data collected by the temperature sensors around the target cabin should be the same or have a small phase difference.
In this embodiment, the control device 12 detects that the difference between two temperature sensors to be detected in the same car exceeds the first preset deviation temperature threshold, and may determine that at least one of the two temperature sensors to be detected has a fault. But cannot accurately judge which temperature sensor to be detected has a fault, and cannot determine whether the fault is an offset fault.
Therefore, the control device may perform difference calculation on the temperature data of the two temperature sensors to be detected and the temperature data of the cabin according to a preset comparison rule under the condition that it is determined that at least one of the two temperature sensors to be detected has a fault, and determine, according to a result of the difference calculation, a target temperature sensor having an offset fault in the two temperature sensors to be detected.
The preset comparison rule may be a comparison rule between temperature data of two temperature sensors to be detected and temperature data of a cabin. The preset comparison rule may include, but is not limited to, a comparison rule between the minimum temperature data and the cabin temperature data in the temperature data of the two temperature sensors to be detected, and a comparison rule between the temperature data of the two temperature sensors to be detected and the cabin temperature data, respectively.
The target temperature sensor may be one of the two temperature sensors to be detected, which has an offset fault. The target temperature sensor may be one or two.
The difference value calculation result may be a result obtained by performing difference value calculation on temperature data of the two temperature sensors to be detected and temperature data of the compartment according to a preset comparison rule. The difference calculation result may include a difference result between the minimum temperature data and the cabin temperature data among the temperature data of the two temperature sensors to be detected, and may also include a difference result between the temperature data of the two temperature sensors to be detected and the cabin temperature data, respectively.
In the embodiment of the application, the control device can realize fault location of the two temperature sensors to be detected by carrying out difference calculation according to the preset comparison rule. The difference calculation may characterize the fault localization result. The fault location result may be no fault, a single fault or a full fault. Wherein, no fault can indicate that both temperature sensors to be detected are normal. A single fault may indicate which of the two temperature sensors to detect is the temperature sensor having the offset fault. The total fault may be a temperature sensor indicating that both temperature sensors to be detected are offset faults.
In the above embodiment, the temperature data collected by the two temperature sensors to be detected in the target carriage can be obtained by closing the carriage door of the target carriage of the rail transit vehicle under the condition that the temperature of the target carriage is stable, so that the temperature data collected by the two temperature sensors to be detected under the condition of the ambient temperature of the carriage can be used as the diagnosis basis. And acquiring carriage temperature data corresponding to the target carriage of the rail transit vehicle, and taking the carriage temperature data as reference data for fault diagnosis. And under the condition that the difference value between the temperature data of the two temperature sensors to be detected exceeds a first set deviation threshold value, carrying out difference value calculation according to a preset comparison rule based on the temperature data of the two temperature sensors to be detected and the temperature data of the carriage, and determining the target temperature sensor with offset fault in the two temperature sensors to be detected according to the difference value calculation result. Therefore, whether the target temperature sensor with offset faults exists is primarily judged through the difference value between the two temperature data, and the target sensor is further accurately positioned according to the preset comparison rule, so that the temperature sensor with the offset faults in the rail transit carriage can be accurately and rapidly detected under the condition that the number of the temperature sensors is limited, the fault sensor can be accurately removed subsequently, the purposes of reducing the occurrence probability of the conditions of unbalance adjustment and non-ideal temperature control of the whole system are achieved, and the condition that the temperature control of an air conditioning system is disordered is avoided.
In some embodiments, after acquiring the car temperature data corresponding to the target car of the rail transit vehicle at S22, the fault detection method of the temperature sensor may further include:
and under the condition that the difference value between the temperature data of the two temperature sensors to be detected does not exceed the first set deviation threshold value, determining that the two temperature sensors to be detected are normal temperature sensors.
Here, the first set deviation threshold value belongs to the limit of the temperature fluctuation in the entire vehicle cabin. Therefore, when the difference value between the temperature data of the two temperature sensors to be detected does not exceed the first set deviation threshold value, the difference value between the temperature data of the two temperature sensors to be detected belongs to the normal temperature fluctuation range in the carriage, so that the control device can judge that the two temperature sensors to be detected are normal temperature sensors.
In some embodiments, in S23, in the case that the difference between the temperature data of the two temperature sensors to be detected exceeds the first set deviation threshold, performing a difference calculation according to a preset comparison rule based on the temperature data of the two temperature sensors to be detected and the cabin temperature data, and determining, according to the result of the difference calculation, that the target temperature sensor of the two temperature sensors to be detected has an offset fault, the fault detection method of the temperature sensor may further include:
And reporting the sensor faults to a rail transit monitoring system.
After the target temperature sensor is detected, the control equipment of the target carriage reports a sensor fault to the rail transit system, so that the rail transit system can know that the temperature sensor with the offset fault exists in the target carriage, the relevant temperature data of the rail transit vehicle can be recalculated, and workers can accurately replace the temperature sensor with the fault in the carriage.
In some embodiments, to ensure the accuracy of fault detection, the two temperature sensors to be detected may be temperature sensors disposed at the same location of the air conditioning unit 11. That is, two temperature sensors to be detected may be used to collect temperature data of the same portion of the air conditioning unit 11.
Here, the two temperature sensors to be detected may be temperature sensors 13 provided at the return air inlet, the air outlet, or the evaporation outlet. And, the two temperature sensors to be detected may be disposed at the same position of the same air conditioning unit 11 or at the same position of the two air conditioning units 11, respectively.
In some embodiments, S21, after acquiring temperature data acquired by two temperature sensors to be detected in a target car of the rail transit vehicle in a case where a door of the target car is closed and the temperature of the target car is stable, the fault detection method of the temperature sensors may further include:
Detecting whether the two temperature data exceed the range of the temperature sensor to be detected;
under the condition that temperature data of the temperature sensor to be detected exceeds a measuring range, determining that the temperature sensor to be detected is a fault sensor;
under the condition that the temperature data of the two temperature sensors to be detected do not exceed the measuring range, determining whether the difference value between the temperature data of the two temperature sensors to be detected exceeds a first set deviation threshold value; i.e. the
Judging whether the two temperature data exceed the range of the temperature sensor to be detected;
if yes, determining that the corresponding temperature sensor to be detected is a fault sensor;
otherwise, judging whether the difference value between the temperature data of the two temperature sensors to be detected exceeds a first set deviation threshold value, and continuing to execute the step S22 and the step S23.
Here, the two temperature data may be acquired by two temperature sensors to be detected, respectively. The measuring range of the temperature sensor can represent the temperature measuring range of the temperature sensor to be detected. Alternatively, the range of the temperature sensor to be detected may be-30 degrees to 150 degrees. It will be appreciated that the range of the temperature sensor to be detected may be determined based on the particular model of the temperature sensor.
The fault sensor may be a temperature sensor in which other faults besides a temperature offset fault exist. Other faults may be, among others, failure of a temperature sensor, etc.
In the embodiment of the application, the control device detects whether the temperature data acquired by the two temperature sensors to be detected respectively exceeds respective measuring ranges.
Under the condition that the temperature data of one temperature sensor to be detected exceeds the self range, the control equipment can judge that the temperature data collected by the temperature sensor to be detected is invalid, and the temperature sensor to be detected is a fault sensor.
Under the condition that the temperature data of the two temperature sensors to be detected exceeds the range of the self measuring range, the control equipment can judge that the temperature data collected by the two temperature sensors to be detected are invalid, and the two temperature sensors to be detected are fault sensors.
Under the condition that the temperature data of one temperature sensor to be detected does not exceed the self range, the control equipment can preliminarily judge that the temperature data acquired by the temperature sensor to be detected is valid.
Under the condition that the temperature data of the two temperature sensors to be detected do not exceed the range of the self range, the control equipment can preliminarily judge that the temperature data collected by the two temperature sensors to be detected are valid, so that whether offset faults exist in the two temperature sensors to be detected or not is further judged, namely, the difference value between the temperature data of the two temperature sensors to be detected is calculated, whether the difference value exceeds a first set deviation threshold value or not is determined, and whether the offset faults exist in the two temperature sensors to be detected or not is judged according to the determination result.
In the above embodiment, by judging whether the temperature data collected by the temperature sensor to be detected exceeds the measuring range, it can be primarily judged whether the temperature sensor to be detected has a fault, so that the temperature sensor with other faults can be screened out. Therefore, the temperature sensor to be detected can be subjected to preliminary diagnosis, the temperature data collected by the temperature sensor to be detected are ensured to be effective, and the follow-up offset fault diagnosis is facilitated.
In some embodiments, S23, in a case where a difference between the temperature data of the two temperature sensors to be detected exceeds a first set deviation threshold, performs a difference calculation according to a preset comparison rule based on the temperature data of the two temperature sensors to be detected and the cabin temperature data, and determines, according to a result of the difference calculation, a target temperature sensor having an offset fault in the two temperature sensors to be detected, including:
determining the minimum temperature data in the temperature data of the two temperature sensors to be detected under the condition that the difference value between the temperature data of the two temperature sensors to be detected exceeds a first set deviation threshold value;
performing difference calculation on the minimum temperature data and the carriage temperature data to obtain a first difference result;
And under the condition that the first difference result exceeds the second set deviation threshold value, determining that the two temperature sensors to be detected are target temperature sensors with offset faults.
Here, the preset comparison rule may include a rule that the minimum temperature data among the temperature data of the two temperature sensors to be detected is compared with the cabin temperature data. The first difference result may be a difference result between the minimum temperature data and the cabin temperature data. The second set deviation threshold may range from 5 degrees to 8 degrees. It is understood that the range of the second set deviation threshold is not limited to 5 degrees to 8 degrees.
In this embodiment of the present application, performing difference calculation according to a preset comparison rule based on the temperature data of the two temperature sensors to be detected and the cabin temperature data may include performing difference calculation on the minimum temperature data of the two temperature sensors to be detected and the cabin temperature data.
Because the temperature data of the carriage can be the average value of the temperature data acquired by a plurality of different temperature sensors, and the temperature data acquired by the temperature sensor with offset fault is bigger, the minimum temperature data of the two temperature sensors to be detected are compared with the temperature data of the carriage, and whether the two temperature sensors to be detected have offset fault can be primarily judged.
Under the condition that the first difference value exceeds the second set deviation threshold value, the control device can determine that the temperature data collected by the two temperature sensors to be detected exceed the temperature data of the carriage, namely, the temperature data collected by the two temperature sensors to be detected are larger, so that it can be determined that the two temperature sensors to be detected have deviation faults, namely, the two temperature sensors to be detected are target sensors.
In the above embodiment, by the comparison result between the difference value between the minimum temperature data and the cabin temperature data and the second set deviation threshold value, it is possible to accurately diagnose whether offset faults exist in the temperature sensors to be detected.
In addition, in the case where the first difference result does not exceed the second set deviation threshold, the control device may determine that the two temperature sensors to be detected are not all target sensors, that is, that only one of the two temperature sensors to be detected has an offset fault. Therefore, the control apparatus needs to further diagnose which temperature sensor to detect has an offset failure.
In some embodiments, after performing difference calculation on the minimum temperature data and the cabin temperature data to obtain a first difference result, S23, in a case that a difference between the temperature data of the two temperature sensors to be detected exceeds a first set deviation threshold, performing difference calculation according to a preset comparison rule based on the temperature data of the two temperature sensors to be detected and the cabin temperature data, and determining, according to the difference calculation result, a target temperature sensor having an offset fault in the two temperature sensors to be detected, may further include:
Under the condition that the first difference result does not exceed a second set deviation threshold value, carrying out difference calculation on the two temperature data and the carriage temperature data respectively to obtain a second difference result and a third difference result;
and comparing the second difference result with the third difference result, and determining the target temperature sensor with offset faults in the two temperature sensors to be detected according to the comparison result.
Here, the two temperature data may be temperature data corresponding to two temperature sensors to be detected in the target cabin. In this embodiment of the present application, performing difference calculation according to a preset comparison rule based on the temperature data of the two temperature sensors to be detected and the cabin temperature data may include performing difference calculation on minimum temperature data and cabin temperature data in the temperature data of the two temperature sensors to be detected, and performing difference calculation on the two temperature data and the cabin temperature data respectively.
Specifically, when the control device calculates the difference between the minimum temperature data in the two temperature data and the cabin temperature data to obtain a first difference result, and the first difference result does not exceed a second set deviation threshold value, the control device calculates the difference between the two temperature data and the cabin temperature data to obtain a second difference result and a third difference result.
In the embodiment of the present application, the control device may compare the magnitudes of the second difference result and the third difference result. Since the temperature data of the temperature sensor having the offset fault is higher than the temperature data of the normal temperature sensor, the control device can diagnose the target temperature sensor having the offset fault in the two temperature sensors to be detected according to the comparison result.
In the above embodiment, the difference between the temperature data synchronously collected by the two temperature sensors to be detected and the cabin temperature data may be compared, so that the target temperature sensor in the two temperature sensors to be detected may be accurately determined according to the comparison result.
In some embodiments, comparing the second difference result with the third difference result, determining a target temperature sensor with offset fault in the two temperature sensors to be detected according to the comparison result, including:
comparing the second difference result with the third difference result to obtain a comparison result;
under the condition that the comparison result is that the second difference result is larger than the third difference result, determining that the temperature sensor to be detected corresponding to the second difference is a target temperature sensor with offset faults;
And under the condition that the comparison result is that the third difference result is larger than the second difference result, determining that the temperature sensor to be detected corresponding to the third difference result is a target temperature sensor with offset faults.
Here, the second difference result and the third difference result may be difference results between two temperature data and cabin temperature data acquired by the two temperature sensors to be detected simultaneously, respectively.
Since the temperature data of the temperature sensor having the offset fault is higher than the temperature data of the normal temperature sensor, the temperature sensor to be detected, which is greatly different from the cabin temperature data, can be taken as the target temperature sensor having the offset fault.
In the embodiment of the application, the control device calculates the difference between the two temperature data synchronously acquired by the two temperature sensors to be detected and the temperature data of the carriage respectively to obtain a second difference result and a third difference result. The control equipment compares the second difference result with the third difference result to obtain a comparison result. And under the condition that the comparison result is that the second difference result is larger than the third difference result, the control equipment determines that the temperature sensor to be detected corresponding to the second difference result in the two temperature sensors to be detected is the target sensor. And under the condition that the comparison result is that the third difference result is larger than the second difference result, the control equipment determines that the temperature sensor to be detected corresponding to the third difference result in the two temperature sensors to be detected is the target sensor.
In a practical application scenario, in order to play a role of redundancy, the number of temperature sensors 13 participating in the air conditioning calculation of the air conditioning system may be increased, that is, the number of temperature sensors 13 in each car of the rail transit vehicle may be more than two. However, since increasing the number of temperature sensors 13 places high demands on the number of ports and the cost of the control device 12, the number of temperature sensors 13 is not preferably excessive.
In the embodiment of the present application, the control device 12 may divide the plurality of temperature sensors 13 into a group every two, perform fault diagnosis on the plurality of groups of temperature sensors to be detected according to a fault detection method for diagnosing two temperature sensors to be detected, and perform fault diagnosis according to a difference value of temperature data between the plurality of temperature sensors 13.
In some embodiments, in a case where there are at least three temperature sensors to be detected in the target cabin, the fault detection method of the temperature sensors further includes:
under the condition that a door of a target carriage of the rail transit vehicle is closed and the temperature of the target carriage is stable, acquiring temperature data acquired by at least three temperature sensors to be detected in the target carriage;
And determining the target temperature sensor with offset faults in at least three temperature sensors to be detected according to the difference result of the temperature data of each two temperature sensors to be detected in the at least three temperature sensors to be detected.
Here, the temperature data collected by the at least three temperature sensors to be detected may be temperature data collected by the at least three temperature sensors to be detected at the same time or average temperature data collected during the same time period.
Temperature data collected by the temperature sensor having an offset fault is higher than that of the normal temperature sensor. Therefore, the difference value results corresponding to the temperature sensor group to be detected where the temperature sensor with the offset fault is located are larger, and the control equipment can accurately diagnose the target temperature sensor with the offset fault according to the plurality of larger difference value results.
In this embodiment of the present application, the control device 12 may combine at least three temperature sensors to be detected in pairs to obtain a plurality of temperature sensor groups to be detected, and perform a difference operation on each temperature sensor group to be detected to obtain a plurality of difference results. The control device 12 may use the temperature sensor to be detected that is common to the two temperature sensor groups to be detected corresponding to the larger difference result or the smaller difference result as the target temperature sensor in which the offset fault exists. Wherein the larger difference result may be a difference result of less than 5 and the smaller difference result may be a difference result of less than-5.
It should be noted that, before calculating the multiple difference results, the control device needs to detect whether the temperature data collected by at least three temperature sensors to be detected are within the range, if so, the subsequent calculation is continued, if not, the temperature data are collected again, and whether the temperature data are within the range is judged again, if not, the existence of the temperature sensors to be detected can be determined.
In the above embodiment, the target sensor with offset fault can be rapidly and accurately determined by the difference value of the temperature data between every two temperature sensors to be detected in at least three sensors to be detected, so that the temperature sensors to be detected are used as references, fault values can be more easily removed, fault diagnosis steps can be simplified, and fault diagnosis efficiency can be improved.
In some embodiments, in a case where the car temperature data includes the whole car average temperature data, S22, acquiring the car temperature data corresponding to the target car of the rail transit vehicle includes:
determining average temperature data of a target carriage according to temperature data of at least two temperature sensors to be detected;
the average temperature data of the target carriages are sent to the rail traffic monitoring system, so that the rail traffic monitoring system determines the average temperature data of the whole vehicle according to the average temperature data of each carriage;
And acquiring the whole vehicle average temperature data corresponding to the target carriage of the rail transit vehicle from a rail transit monitoring system.
Here, the average temperature data of the target cabin may be average data of temperature data of at least two temperature sensors to be detected.
The cabin temperature data includes vehicle average temperature data. The whole vehicle average temperature data can be average data of average temperature data of all carriages of the rail transit vehicle, namely average temperature data of all carriages of the rail transit vehicle are accumulated and divided by average temperature data obtained by the number of carriages.
In the embodiment of the application, the control device 12 of each carriage of the rail transit vehicle can perform communication interaction with the rail transit monitoring system. The control device 12 may upload the average temperature data of the respective cars to the rail transit monitoring system, and the rail transit monitoring system calculates the average temperature data of the whole car according to the average temperature data of each car, and sends the average temperature data of the whole car to each control device, so that the control device of the target car obtains the average temperature data of the whole car from the rail transit system, and uses the average temperature data of the whole car as the temperature data of the car to perform a subsequent fault detection process.
In some embodiments, after sending the average temperature data of the target car to the rail traffic monitoring system, the fault detection method of the temperature sensor may further include:
receiving a temperature sensor fault detection instruction sent by a rail transit monitoring system;
and starting a fault detection flow of the temperature sensor according to the fault detection instruction of the temperature sensor.
Here, the temperature sensor failure detection instruction is used to instruct to start an offset failure detection flow for a temperature sensor to be detected in a target cabin of the rail transit vehicle. The target car may be a car for which an offset fault is determined by the rail traffic monitoring system based on the average temperature data of the current car and the average temperature data of the adjacent cars on both sides.
In the embodiment of the application, the rail transit monitoring system detects, for each car of the rail transit vehicle, a deviation value of average temperature data of a current car and average temperature data of adjacent cars on two sides, if the deviation value is too large, it can determine that the current car is a target car, and sends a temperature sensor fault detection instruction to control equipment of the target car. After receiving a temperature sensor fault detection instruction sent by the rail transit monitoring system, the control equipment of the target carriage starts a fault detection flow of the temperature sensor to carry out fault diagnosis of the temperature sensor.
It should be noted that the fault detection procedures of the temperature sensor may include, but are not limited to, fault detection procedures of two temperature sensors to be detected and fault detection procedures of three or more temperature sensors to be detected.
In the embodiment, the track traffic monitoring system sends the temperature sensor fault detection instruction to the target carriage to start the fault detection flow, so that the fault detection can be performed in a targeted manner, the fault detection range is reduced, and the overall vehicle fault detection efficiency is improved.
In order to fully understand the fault detection method of the temperature sensor provided in the embodiment of the present application, fig. 3 shows a flow chart of another fault detection method of the temperature sensor provided in the embodiment of the present application, and as shown in fig. 3, the fault detection method of the temperature sensor may be applied to a control device of a cabin, and may include:
s31, when the cabin door is closed and the air conditioning unit 11 is heating or cooling for 5 minutes, the temperature data 1 and the temperature data 2 acquired by the temperature sensor a and the temperature sensor B, respectively, are acquired.
Here, the failure detection flow start condition of the temperature sensor is that the cabin door is closed and the air conditioning unit 11 is heated or cooled for 5 minutes. Under the condition that the vehicle door is closed, the air convection with the outdoor air is not generated in the carriage, the temperature cannot be obviously fluctuated, the air conditioning unit is heated or refrigerated for 5 minutes, and the temperature can be kept in a small fluctuation range. Therefore, the temperature of the carriage can be kept stable through the two conditions, and the temperature judgment of the carriage is key.
S32, judging whether the temperature data 1 and the temperature data 2 are out of range. If yes, the process proceeds to S33, and if no, the process proceeds to S34.
Here, whether the temperature data exceeds the measuring range is taken as a fault screening condition, so that partial faults can be screened out.
And S33, confirming that the temperature sensor A and/or the temperature sensor B have faults.
Here, if the temperature data 1 is out of range, it can be determined that the temperature sensor a is malfunctioning. If temperature data 2 is out of range, it can be determined that temperature sensor B is malfunctioning. If both temperature data 1 and temperature data 2 are out of range, it can be determined that both temperature sensor A and temperature sensor B are malfunctioning.
S34, judging the temperatureWhether the absolute value of the difference between data 1 and temperature data 2 is greater than K 1 (i.e., a first set deviation threshold). If not, the process proceeds to S35. If so, the process proceeds to S36. Specifically, K 1 The value of (2) may be 10.
Here, whether the absolute value of the difference between the temperature data 1 and the temperature data 2 is greater than K 1 As a primary judgment condition for judging that the temperature deviation fault exists in the sensor, since the two temperature sensors are placed in one compartment and the environmental conditions are almost the same, under the condition that the refrigerating capacity and the heating capacity are the same, the deviation of the two temperature sensors is generally not more than 10 degrees, and if the deviation exceeds 10 degrees, it can be judged that at least one of the two temperature sensors has the deviation fault.
S35, it was confirmed that both the temperature sensor a and the temperature sensor B are normal.
S36, judging whether the difference value between the minimum temperature data and the average temperature data of the whole vehicle in the temperature data 1 and the temperature data 2 is larger than K 2 (i.e., a second set deviation threshold). If so, go to S37. If not, go to S38. Specifically, K 2 The value of (2) may be 5.
Here, the average temperature data of the whole vehicle may be obtained from the rail transit monitoring system, and is determined according to the average temperature data of each carriage. Here, the deviation between the two temperature data and the average temperature data of the whole vehicle can be used as a diagnosis condition for judging the fault condition of the two temperature sensors.
S37, confirming that offset faults exist in the temperature sensor A and the temperature sensor B.
S38, calculating the difference between the temperature data 1 and the temperature data 2 and the average temperature data of the whole vehicle respectively to obtain a difference value a and a difference value b, and turning to S39.
S39, judging whether the difference value a is larger than the difference value b. If yes, go to S310, if no, go to S311.
Here, by comparing the two difference magnitudes, the fault temperature sensor can be further located.
S310, determining that the temperature sensor A has offset faults.
S311, determining that the temperature sensor B has offset faults.
In the above embodiment, under the condition that the number of the sensors is limited, the temperature sensors with offset faults are accurately arranged, so that the air-conditioning state can be accurately regulated and controlled under the condition that the number of the temperature sensors is limited, thereby saving cost and space, and reducing the occurrence of the condition of disordered temperature control of the air-conditioning system caused by the offset faults of the temperature sensors.
In some embodiments, after the control device 12 confirms the fault temperature sensor, the fault temperature sensor is reported to the rail transit monitoring system.
In another aspect of the embodiment of the application, a fault detection device of a temperature sensor is also provided. Fig. 4 is a schematic structural diagram of a fault detection device of a temperature sensor according to an embodiment of the present application, and as shown in fig. 4, the fault detection device of a temperature sensor may include:
the first temperature data acquisition module 41 is configured to acquire temperature data acquired by two temperature sensors to be detected in a target carriage of a rail transit vehicle when a carriage door of the target carriage is closed and the temperature of the target carriage is stable;
a target temperature acquisition module 42, configured to acquire cabin temperature data corresponding to a target cabin of the rail transit vehicle;
The first target sensor determining module 43 is configured to perform a difference calculation according to a preset comparison rule based on the temperature data of the two temperature sensors to be detected and the cabin temperature data, and determine, according to a result of the difference calculation, a target temperature sensor having an offset fault in the two temperature sensors to be detected, when a difference between the temperature data of the two temperature sensors to be detected exceeds a first set deviation threshold.
In the above embodiment, the temperature data collected by the two temperature sensors to be detected in the target carriage can be obtained by closing the carriage door of the target carriage of the rail transit vehicle under the condition that the temperature of the target carriage is stable, so that the temperature data collected by the two temperature sensors to be detected under the condition of the ambient temperature of the carriage can be used as the diagnosis basis. And acquiring carriage temperature data corresponding to the target carriage of the rail transit vehicle, and taking the carriage temperature data as reference data for fault diagnosis. And under the condition that the difference value between the temperature data of the two temperature sensors to be detected exceeds a first set deviation threshold value, carrying out difference value calculation according to a preset comparison rule based on the temperature data of the two temperature sensors to be detected and the temperature data of the carriage, and determining the target temperature sensor with offset fault in the two temperature sensors to be detected according to the difference value calculation result. Therefore, whether the target temperature sensor with offset faults exists is primarily judged through the difference value between the two temperature data, and the target sensor is further accurately positioned according to the preset comparison rule, so that the temperature sensor with the offset faults in the rail transit carriage can be accurately and rapidly detected under the condition that the number of the temperature sensors is limited, the fault sensor can be accurately removed subsequently, the purposes of reducing the occurrence probability of the adjustment unbalance and the temperature control non-ideal condition of the whole system are achieved, and the occurrence of the air conditioner temperature control confusion condition can be avoided.
In some embodiments, the fault detection device of the temperature sensor may further include:
the range detection module is used for detecting whether the two temperature data exceeds the range of each temperature sensor to be detected or not after acquiring the temperature data acquired by the two temperature sensors to be detected in the target carriage under the condition that the carriage door of the target carriage of the rail transit vehicle is closed and the temperature of the target carriage is stable;
the fault determining module is used for determining that the temperature sensor to be detected is a fault sensor under the condition that the temperature data of the temperature sensor to be detected exceeds a measuring range;
the first difference value determining module is used for determining whether the difference value between the temperature data of the two temperature sensors to be detected exceeds a first set deviation threshold value under the condition that the temperature data of the two temperature sensors to be detected do not exceed the measuring range.
In some embodiments, the first object sensor determination module 43 includes:
a minimum temperature determination submodule, configured to determine minimum temperature data among the temperature data of two temperature sensors to be detected when a difference between the temperature data of the two temperature sensors to be detected exceeds a first set deviation threshold;
The first difference value result submodule is used for carrying out difference value calculation on the minimum temperature data and the carriage temperature data to obtain a first difference value result;
and the first target determination submodule is used for determining that the two temperature sensors to be detected are target temperature sensors with offset faults under the condition that the first difference value exceeds the second set deviation threshold value.
In some embodiments, the first object sensor determination module 43 may further include:
the second difference result and the third difference result obtaining submodule is used for carrying out difference calculation on the minimum temperature data and the carriage temperature data to obtain a first difference result, and carrying out difference calculation on the two temperature data and the carriage temperature data respectively to obtain a second difference result and a third difference result under the condition that the first difference result does not exceed a second set deviation threshold value;
and the second target determining submodule compares the second difference result with the third difference result, and determines target temperature sensors with offset faults in the two temperature sensors to be detected according to the comparison result.
In some embodiments, the second target determination submodule may include:
the comparison result unit is used for comparing the second difference result with the third difference result to obtain a comparison result;
The target determining unit is used for determining that the temperature sensor to be detected corresponding to the second difference result is a target temperature sensor with offset faults when the comparison result is that the second difference result is larger than the third difference result; and under the condition that the comparison result is that the third difference result is larger than the second difference result, determining that the temperature sensor to be detected corresponding to the third difference result is a target temperature sensor with offset faults.
In some embodiments, the fault detection device of the temperature sensor may further include:
the second temperature data acquisition module is used for acquiring temperature data acquired by the at least three temperature sensors to be detected in the target carriage under the condition that the carriage door of the target carriage of the rail transit vehicle is closed and the temperature of the target carriage is stable;
and the second target determining module is used for determining the target temperature sensor with offset faults in at least three temperature sensors to be detected according to the difference result of the temperature data of every two temperature sensors to be detected in the at least three temperature sensors to be detected.
In some embodiments, the first temperature data acquisition module 41 may include:
the average temperature determining submodule is used for determining average temperature data of the target carriage according to the temperature data of at least two temperature sensors to be detected;
The transmitting sub-module is used for transmitting the average temperature data of the target carriage to the rail traffic monitoring system so that the rail traffic monitoring system can determine the average temperature data of the whole vehicle according to the average temperature data of each carriage;
and the acquisition sub-module is used for acquiring the whole vehicle average temperature data corresponding to the target carriage of the rail transit vehicle from the rail transit monitoring system.
It should be noted that: in the fault detection device for a temperature sensor provided in the foregoing embodiment, in the process of implementing the fault detection device for a temperature sensor, only the division of each program module is described as an example, in practical application, the processing allocation may be completed by different program modules according to needs, and the internal structure of the device may be divided into different program modules to complete all or part of the method steps described above. In addition, the fault detection device of the temperature sensor provided in the above embodiment and the fault detection method embodiment of the temperature sensor belong to the same concept, and the specific implementation process of the fault detection device of the temperature sensor is detailed in the method embodiment, which is not described herein.
In still another aspect of the embodiments of the present application, fig. 5 shows a schematic structural diagram of a control device provided by an embodiment of the present application, as shown in fig. 5, where the control device includes a processor 51 and a memory 52, a computer program executable by the processor is stored in the memory 52, and the computer program is implemented by the processor when executed by the processor, where the fault detection method of the temperature sensor provided by any embodiment of the present application is implemented, and the control device and the fault detection method of the temperature sensor provided by the foregoing embodiment can achieve the same technical effect, so that repetition is avoided.
The embodiment of the present application further provides a computer readable storage medium, on which a computer program is stored, where the computer program when executed by a processor implements each process of the foregoing embodiment of the fault detection method of a temperature sensor, and the same technical effects can be achieved, so that repetition is avoided, and no further description is given here. The computer readable storage medium is, for example, read-only memory (ROM), random Access Memory (RAM), magnetic disk or optical disk.
The foregoing is merely specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present application, and the changes and substitutions are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (10)

1. A fault detection method for a temperature sensor, comprising:
s21, under the condition that a door of a target carriage of a rail transit vehicle is closed and the temperature of the target carriage is stable, acquiring temperature data acquired by two temperature sensors to be detected in the target carriage;
S22: acquiring carriage temperature data corresponding to the target carriage of the rail transit vehicle;
s23, calculating a difference value according to a preset comparison rule based on the temperature data of the two temperature sensors to be detected and the carriage temperature data under the condition that the difference value between the temperature data of the two temperature sensors to be detected exceeds a first set deviation threshold;
and determining a target temperature sensor with offset faults in the two temperature sensors to be detected according to the difference value calculation result.
2. The fault detection method of a temperature sensor according to claim 1, wherein in step S21, after acquiring temperature data acquired by two temperature sensors to be detected in the target cabin, the fault detection method further comprises:
judging whether the two temperature data exceed the range of the temperature sensor to be detected;
if yes, determining that the corresponding temperature sensor to be detected is a fault sensor;
otherwise, judging whether the difference value between the temperature data of the two temperature sensors to be detected exceeds a first set deviation threshold value, and continuing to execute the step S22 and the step S23.
3. The method for detecting a failure of a temperature sensor according to claim 1, wherein,
In step S23, in the case that the difference between the temperature data of the two temperature sensors to be detected exceeds a first set deviation threshold, determining the minimum temperature data among the temperature data of the two temperature sensors to be detected;
performing difference calculation on the minimum temperature data and the carriage temperature data to obtain a first difference result;
and in step S23, if the first difference result exceeds the second set deviation threshold, it is determined that the two temperature sensors to be detected are both target temperature sensors with offset faults.
4. The fault detection method of a temperature sensor according to claim 3, further comprising, after obtaining the first difference result in step S23:
under the condition that the first difference result does not exceed a second set deviation threshold value, carrying out difference calculation on the two temperature data and the carriage temperature data respectively to obtain a second difference result and a third difference result;
and in step S23, the second difference result is compared with the third difference result, and the target temperature sensor with offset fault in the two temperature sensors to be detected is determined according to the comparison result.
5. The method according to claim 4, wherein in step S23, the comparing the second difference result with the third difference result, and determining, according to the comparison result, the target temperature sensor having the offset fault in the two temperature sensors to be detected, specifically includes:
comparing the second difference result with the third difference result to obtain a comparison result;
determining that the temperature sensor to be detected corresponding to the second difference result is a target temperature sensor with offset fault under the condition that the comparison result is that the second difference result is larger than the third difference result;
and under the condition that the comparison result is that the third difference result is larger than the second difference result, determining that the temperature sensor to be detected corresponding to the third difference result is a target temperature sensor with offset faults.
6. The method for detecting a fault in a temperature sensor according to claim 1, wherein in step S21, the method for acquiring the average temperature data of the whole vehicle corresponding to the target compartment of the rail transit vehicle specifically comprises:
determining average temperature data of the target carriage according to the temperature data of the at least two temperature sensors to be detected;
The average temperature data of the target carriages are sent to a rail traffic monitoring system, so that the rail traffic monitoring system determines the whole vehicle average temperature data according to the average temperature data of each carriage;
and acquiring whole car average temperature data corresponding to the target carriage of the rail transit vehicle from the rail transit monitoring system.
7. The fault detection method of a temperature sensor according to any one of claims 1 to 6, wherein in step S21, temperature data collected by at least one third temperature sensor to be detected in the target cabin is also obtained;
and, at least one third temperature sensor to be detected and the two temperature sensors to be detected are combined into a temperature sensor group to be detected comprising two temperature sensors to be detected, and the step S22 and the step S23 are continuously executed respectively.
8. A fault detection device for a temperature sensor, comprising:
the first temperature data acquisition module is used for acquiring temperature data acquired by two temperature sensors to be detected in a target carriage of the rail transit vehicle under the condition that the carriage door of the target carriage is closed and the temperature of the target carriage is stable;
The target temperature acquisition module is used for acquiring carriage temperature data corresponding to the target carriage of the rail transit vehicle;
the first target sensor determining module is used for calculating the difference value according to a preset comparison rule based on the temperature data of the two temperature sensors to be detected and the carriage temperature data under the condition that the difference value between the temperature data of the two temperature sensors to be detected exceeds a first set deviation threshold value, and determining the target temperature sensor with offset fault in the two temperature sensors to be detected according to the difference value calculation result.
9. A control device comprising a processor and a memory, wherein the memory stores a computer program executable by the processor, the computer program implementing the fault detection method of the temperature sensor according to any one of claims 1 to 7 when executed by the processor.
10. A computer-readable storage medium, characterized in that the computer-readable storage medium has stored thereon a computer program which, when executed by a controller, implements the fault detection method of the temperature sensor according to any one of claims 1 to 7.
CN202310215512.9A 2023-03-06 2023-03-06 Fault detection method, device, equipment and storage medium of temperature sensor Pending CN116242506A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117419758A (en) * 2023-12-18 2024-01-19 潍柴动力股份有限公司 Engine sensor fault detection method, device, equipment and readable storage medium

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117419758A (en) * 2023-12-18 2024-01-19 潍柴动力股份有限公司 Engine sensor fault detection method, device, equipment and readable storage medium

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