CN108760066B - Train temperature detection method, device and system - Google Patents
Train temperature detection method, device and system Download PDFInfo
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- CN108760066B CN108760066B CN201810564653.0A CN201810564653A CN108760066B CN 108760066 B CN108760066 B CN 108760066B CN 201810564653 A CN201810564653 A CN 201810564653A CN 108760066 B CN108760066 B CN 108760066B
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- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
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Abstract
The application provides a train temperature detection method, a train temperature detection device and a train temperature detection system, wherein each detection point of a component to be detected is provided with a temperature sensing device, the temperature sensing device is provided with a first temperature sensing unit and a second temperature sensing unit, a redundant temperature sensing unit is arranged, whether each temperature sensing unit fails or not is judged independently, when the temperature sensing units fail, one temperature sensing unit is set to be a temporary fault by comparing the temperature values of the two temperature sensing units, so that the temperature sensing unit is in a locked state, the other temperature sensing unit is set to be a normal state, when the temperature sensing unit in the normal state fails, the temperature sensing unit in the temporary fault can be unlocked, so that the temperature sensing unit in the temporary fault can be recovered to the normal state, the temperature sensing unit in the fault can be replaced for temperature detection, and by adding a temporary fault transition area, each detection point of the component to be detected can be ensured to be in a monitored state in real, the occurrence of monitoring blind areas is avoided, and the running safety of the train is ensured.
Description
Technical Field
The application relates to the field of train temperature detection, in particular to a train temperature detection method, device and system.
Background
With the continuous development of train technology, the speed of trains is faster and faster, and the safe and stable operation state of the trains needs to be ensured to the greatest extent.
In order to ensure the safe and stable operation of the train, one implementation mode is to perform real-time temperature monitoring on important parts of train running, such as key parts of a running part of a train bogie, and assist in judging whether the train is in a safe operation state or not by detecting and identifying temperature data. The current temperature detection system mainly comprises a temperature sensor and a temperature detection unit, wherein the temperature detection unit acquires a temperature value from the temperature sensor in real time, uploads the temperature value to a Train Control and Management System (TCMS), and achieves the purpose of monitoring whether important parts running on a train are normal or not through identification and judgment of temperature data. However, when the temperature sensor fails or is identified abnormally, a monitoring blind area is caused, and the safe and stable operation of the train cannot be ensured.
Disclosure of Invention
In view of this, an object of the present application is to provide a train temperature detection method, apparatus, and system, which avoid the occurrence of monitoring blind areas in the system and ensure safe and stable operation of the train.
In order to achieve the purpose, the technical scheme is as follows:
the first aspect of the application provides a train temperature detection method, wherein a temperature sensing device is arranged on each detection point of a component to be detected, the temperature sensing device is provided with a first temperature sensing unit and a second temperature sensing unit, and the detection method comprises the following steps:
respectively obtaining a first temperature value of the first temperature sensing unit and a second temperature value of the second temperature sensing unit at the same sampling moment;
judging whether the first temperature sensing unit is in fault according to the first temperature value, and judging whether the second temperature sensing unit is in fault according to the second temperature value;
if the first temperature value and the second temperature value are not the same, one of the first temperature sensing unit and the second temperature sensing unit is set to be in a temporary fault state, the other one is in a normal state, the temperature sensing unit in the temporary fault state is in a working state, but the acquired temperature value is not used for data processing, and the temperature value acquired by the temperature sensing unit in the normal state is used for data processing;
and when the temperature sensing unit in the normal state is in fault, restoring the temperature sensing unit in the temporary fault state to the normal state.
In some embodiments, the method further comprises: and reporting the fault state of the temperature sensing unit when the first temperature sensing unit or the second temperature sensing unit is in fault.
In some embodiments, the difference according to the first temperature value and the second temperature value comprises: obtaining a difference value between the first temperature value and the second temperature value; and judging whether the difference value is within a preset threshold range, if not, setting one of the first temperature sensing unit and the second temperature sensing unit as a temporary fault.
In some embodiments, the method further comprises:
further comprising: and when the difference value is within a preset threshold value range, setting the first temperature sensing unit and the second temperature sensing unit to be in a normal state.
In some embodiments, said setting one of said first temperature sensing unit and said second temperature sensing unit to a temporary fault comprises: and setting the temperature sensing unit with the lower value of the first temperature value and the second temperature value as a temporary fault.
A second aspect of the present application provides a train temperature detection device, wherein a temperature sensing device is provided on each detection point of a to-be-detected member, the temperature sensing device has a first temperature sensing unit and a second temperature sensing unit, the detection device includes:
the first detection unit is used for obtaining a first temperature value of the first temperature sensing unit at the sampling moment and judging whether the first temperature sensing unit is in fault or not according to the first temperature value;
the second detection unit is used for obtaining a second temperature value of the second temperature sensing unit at the sampling moment and judging whether the second temperature sensing unit is in fault or not according to the second temperature value;
the third detection unit is used for setting one of the first temperature sensing unit and the second temperature sensing unit as a temporary fault according to the difference between the first temperature value and the second temperature value when the first temperature sensing unit and the second temperature sensing unit are not in fault, setting the other one of the first temperature sensing unit and the second temperature sensing unit as a normal state, enabling the temperature sensing unit in the temporary fault state to be in a working state but not to be used for data processing, and enabling the temperature sensing unit in the normal state to be used for data processing;
and the recovery unit is used for recovering the temperature sensing unit in the temporary fault state to be in the normal state when the temperature sensing unit in the normal state is in fault.
In some embodiments, the third detecting unit, wherein the difference according to the first temperature value and the second temperature value includes: obtaining a difference value between the first temperature value and the second temperature value; and judging whether the difference value is within a preset threshold range, if not, setting one of the first temperature sensing unit and the second temperature sensing unit as a temporary fault.
In some embodiments, the third detecting unit is further configured to set both the first temperature sensing unit and the second temperature sensing unit to a normal state when the difference is within a preset threshold range.
In some embodiments, the setting of one of the first temperature sensing unit and the second temperature sensing unit as a temporary failure in the third detection unit includes: and setting the temperature sensing unit with the lower value of the first temperature value and the second temperature value as a temporary fault.
A third aspect of the present application provides a train temperature detection system, comprising:
the temperature sensing device is arranged on each detection point of the part to be detected and is provided with a first temperature sensing unit and a second temperature sensing unit;
the train temperature detection device according to any one of the second aspect of the present application;
and the train control and management system is in communication connection with the train temperature detection device.
Through the technical scheme, the train temperature detection method, the train temperature detection device and the train temperature detection system provided by the embodiment of the application, wherein the temperature sensing device arranged at each detection point of the component to be detected comprises two temperature sensing units, namely a first temperature sensing unit and a second temperature sensing unit, a first temperature value of the first temperature sensing unit and a second temperature value of the second temperature sensing unit are respectively obtained at the same moment, whether the first temperature sensing unit and the second temperature sensing unit have faults or not is respectively judged according to the first temperature value and the second temperature value, when the two temperature sensing units have no faults, the difference between the first temperature value and the second temperature value is judged, one temperature sensing unit is set to be in a temporary fault according to the difference result, the other temperature sensing unit is in a normal state, and the temperature sensing unit in the temporary fault state is still in a working state, the acquired temperature value is not used for data processing, only the temperature value acquired by the temperature sensing unit in the normal state is subjected to data processing, and when the temperature sensing unit in the normal state fails, the temperature sensing unit in the temporary failure state is unlocked and recovered to the normal state. Therefore, according to the method provided by the application, the redundant temperature sensing units are arranged, whether each temperature sensing unit fails or not is judged independently, when the temperature sensing units do not fail, one of the temperature sensing units is set to be in a temporary fault by comparing the temperature values of the two temperature sensing units, the other temperature sensing unit is in a normal state, when the temperature sensing unit in the normal state fails, the temperature sensing unit in the temporary fault can be unlocked and restored to the normal state to replace the temperature sensing unit in the fault for temperature detection, and by adding the temporary fault transition area, each detection point of the component to be detected can be guaranteed to be in a monitored state in real time to the maximum extent, a monitoring blind area is avoided, and the running safety of a train is guaranteed.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is an exemplary application scenario provided in an embodiment of the present application;
fig. 2 is a flowchart of a train temperature detection method provided in the embodiment of the present application;
fig. 3 is a structural diagram of a train temperature detection device provided in an embodiment of the present application;
fig. 4 is a schematic diagram of a train temperature detection system according to an embodiment of the present application.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, but the present application may be practiced in other ways than those described herein, and it will be apparent to those of ordinary skill in the art that the present application is not limited to the specific embodiments disclosed below.
The applicant finds that in the traditional train component temperature detection research, in the traditional temperature detection method, a temperature value of a component is mainly detected through a temperature sensor, a temperature value detected by the temperature sensor is obtained in real time through a temperature detection unit, and the obtained temperature value is sent to the TCMS.
Based on this, the applicant provides a temperature detection method, wherein a temperature sensing device is arranged on each detection point of a component to be detected, and the temperature sensing device comprises two temperature sensing units, namely a first temperature sensing unit and a second temperature sensing unit, so that the two temperature sensing units can simultaneously acquire temperature values of the detected points, respectively acquire a first temperature value of the first temperature sensing unit and a second temperature value of the second temperature sensing unit at the same time, respectively judge whether the first temperature sensing unit and the second temperature sensing unit have faults or not according to the first temperature value and the second temperature value, when neither temperature sensing unit has a fault, judge the difference between the first temperature value and the second temperature value, and set one temperature sensing unit as a temporary fault according to the difference result, and set the other temperature sensing unit as a normal state, the temperature sensing unit in the temporary fault state is still in a working state, but the temperature value acquired by the temperature sensing unit is not used for data processing, only the temperature value acquired by the temperature sensing unit in the normal state is processed, and when the temperature sensing unit in the normal state is in fault, the temperature sensing unit in the temporary fault state is unlocked and is recovered to the normal state. Therefore, in the application, the temperature sensing unit is added, and the accuracy of monitoring the temperature of the detection point is improved and the safe operation of the train is ensured by setting the temporary fault transition area.
For facilitating understanding of the present application, an application scenario of the present application is described, referring to fig. 1, which is an exemplary application scenario diagram provided in an embodiment of the present application, the train temperature detection method provided in the present application may be applied to detection of any component in a train, and is particularly suitable for real-time temperature detection of a key component of a train bogie running component.
As shown in fig. 1, three detection points are provided, each detection point is provided with a temperature sensing device 100, 200 and 300, each temperature sensing device includes two temperature sensing units, taking the temperature sensing device 100 as an example, it includes a first temperature sensing unit 101 and a second temperature sensing unit 102, both temperature sensing units can collect the temperature of the detection point and send the collected temperature value to the temperature detection unit, in the specific implementation, the temperature detection unit obtains a first temperature value of the first temperature sensing unit 101 and a second temperature value of the second temperature sensing unit 102 at the same sampling time, and respectively determines whether the first temperature sensing unit and the second temperature sensing unit are faulty according to the two temperature values, if neither temperature value is faulty, the temperature detection unit sets one of the temperature sensing units (for example 102) as a temporary fault according to the difference between the first temperature value and the second temperature value, the temperature sensing unit is used as a redundant temperature list unit, and the other temperature sensing unit (such as 101) is set to be in a normal state, so that the temperature sensing unit 102 in temporary failure is still used for collecting the temperature value of the detection point, but the collected temperature value is not used for data processing; when the first temperature sensing unit 101 breaks down, the second temperature sensing unit 102 is unlocked from the temporary fault state to the normal state, so that the second temperature sensing unit is utilized to detect the temperature of the detection point, the occurrence of a monitoring blind area is avoided, and the running safety of the train is ensured.
In order to facilitate understanding of technical solutions of the present application by those skilled in the art, the train temperature detection method provided in the present application will be described in detail below with reference to the accompanying drawings.
Referring to fig. 2, the figure is a flowchart of a train temperature detection method provided in the embodiment of the present application.
The method is applied to each detection point of a component to be detected, and the monitoring point is provided with a temperature sensing device, wherein the temperature sensing device is provided with a first temperature sensing unit and a second temperature sensing unit, and the two temperature sensing units can be used for detecting the temperature value of each detection point.
The method is mainly executed by a temperature detection unit and can comprise the following steps:
s201: and respectively obtaining a first temperature value of the first temperature sensing unit and a second temperature value of the second temperature sensing unit at the same sampling moment.
In this embodiment, the two temperature sensing units collect temperature values of the detection points at the same sampling time, and send the collected temperature values to the temperature detection unit.
Wherein, the temperature sensing unit specifically can be temperature sensor, and temperature sensor has the multiple type, for example single channel temperature sensor and multichannel temperature sensor, and when temperature sensor was single channel temperature sensor, then temperature sensing device can include two single channel temperature sensor, and every single channel temperature sensor is connected with the temperature detecting element, and the temperature value of check point is gathered to every single channel temperature sensor to the temperature value that will gather respectively at the same moment sends for the temperature detecting element.
When the temperature sensor is a dual-channel temperature sensor, the temperature sensing device can comprise a dual-channel temperature sensor, each channel of the dual-channel temperature sensor is connected to the temperature detection unit, the dual-channel temperature sensor collects the temperature value of the detection point, and the collected temperature value is sent to the temperature detection unit through the connecting line of each channel.
It should be noted that, the temperature detection unit may be a single detection device, or may be an integrated device composed of a plurality of detection sub-units, and this embodiment is not limited herein.
For convenience of understanding, the temperature detection unit composed of two temperature detection subunits is taken as an example for explanation, when the temperature sensing device includes two single-channel temperature sensors, the first temperature sensor is connected with the first temperature detection subunit, the second temperature sensor is connected with the second temperature detection subunit, the first temperature detection subunit obtains the temperature value acquired by the first temperature sensor, and the second temperature detection subunit obtains the temperature value acquired by the second temperature sensor. When the temperature sensing device comprises a double-channel temperature sensor, the first channel is connected with the first temperature detection subunit, the second channel is connected with the second temperature detection subunit, the first temperature detection subunit acquires the temperature value acquired by the first channel, and the second temperature detection subunit acquires the temperature value acquired by the second channel.
S202: and judging whether the first temperature sensing unit is in fault or not according to the first temperature value, and judging whether the second temperature sensing unit is in fault or not according to the second temperature value.
It can be understood that, when the temperature sensing unit fails, the temperature value that it collects is an abnormal value, and the fault state of the temperature sensing unit can be uploaded to the TCMS system.
In specific implementation, the temperature detection unit may process and determine the acquired temperature value according to a fault determination mechanism of the temperature sensing unit to detect whether a fault occurs inside the temperature sensing unit, the fault of the temperature sensing unit is typical such as an open circuit, a short circuit or an inoperative fault to eliminate an abnormal situation of temperature jump, and when the temperature detection unit determines that a fault occurs in a certain temperature sensing unit, the temperature sensing unit is locked, and a fault state of the temperature sensing unit is sent to the TCMS.
When the temperature sensing unit does not have the typical fault, in order to ensure the accuracy of the judgment, the temperature detection unit may further perform fault judgment on the temperature sensing unit, where the judgment is performed according to different directions of the train, and for convenience of understanding, a train side is taken as an example, where the train side refers to one of the left and right sides of the train, and for a stationary train or a train with a low running speed (speed of 10km/h and continuous running for 2 hours), the environments of the same side of the train are basically the same, such as illumination, so that the temperature of the same side is basically close, the temperature detection unit obtains a temperature value collected by the temperature sensing unit on the train side and compares the temperature value with the average temperature value X ℃ on the side, and when the obtained temperature value and the average temperature value X ℃ are greater than a preset difference value, it is considered that there is a large difference with the average temperature value, and if the temperature sensing unit is judged to be in fault, the temperature detection unit locks the temperature sensing unit and uploads the fault state of the temperature sensing unit to the TCMS. In a specific application, the determination method is related to the number and the orientation of the detection points arranged on the component to be detected, and for convenience of understanding, in a specific example, when the component to be detected is provided with A, B, C and D detection points, A, B is located on the left side of a train, and C, D is located on the right side of the train, when it is required to determine whether the first temperature sensing unit at the point a has a fault, X ℃ is equal to an average value of four detected temperature values at A, B two detection points, then the first temperature value at the point a is compared with X ℃, and when a difference between the first temperature value and the average temperature value X ℃ is large, the first temperature sensing unit at the point a is considered to be in a fault state, otherwise, the first temperature sensing unit at the point a is considered to be in a normal.
In this embodiment, when the temperature detecting unit determines that the first temperature sensing unit does not malfunction according to the first temperature value and determines that the second temperature sensing unit does not malfunction according to the second temperature value, step S203 is executed. If the temperature detection unit judges that any one of the temperature detection units has a fault, the temperature detection unit can report the fault state of the temperature sensing unit to the TCMS, so that the TCMS can timely know the state of the temperature sensing unit and make corresponding emergency measures.
S203: according to the difference between the first temperature value and the second temperature value, one of the first temperature sensing unit and the second temperature sensing unit is set to be in a temporary fault state, the other one is in a normal state, the temperature sensing unit in the temporary fault state is in a working state, but the acquired temperature value is not used for data processing, and the temperature value acquired by the temperature sensing unit in the normal state is used for data processing.
It should be noted that, in the present application, that the temperature sensing unit is in a fault refers to that the working state of the temperature sensing unit is abnormal, and the working state abnormality may be a typical fault such as a short circuit, an open circuit, or an inoperative state, and may also be that the difference between the acquired temperature value and the normal value is large.
The temperature sensing unit is in a temporary fault, which means that the temperature sensing unit is still in a working state, that is, still performs data acquisition, but the acquired temperature value is not used for further data processing, that is, the acquired temperature value is not used as a confidence value of the detection point. In a specific application, the temperature value collected by the temperature sensing unit with the temporary fault may be uploaded, but is not used for further data processing by an uploading system, such as TCMS, and the data processing refers to the judgment of the detection point such as early warning, alarm, temperature rise, or the operation of other parameters by using the temperature value.
The temperature sensing unit is in a normal state, which means that the temperature sensing unit is in a working state to acquire data, and meanwhile, the acquired temperature value is used for further data processing, namely, the acquired temperature value is used as a confidence acquisition value of the detection point. In a specific application, the temperature value collected by the temperature sensing unit with the temporary fault may be uploaded, and simultaneously used for further data processing by an uploading system, such as TCMS, where the data processing refers to the judgment of the detection point, such as early warning, alarm, temperature rise, or the operation of other parameters by using the temperature value.
In this embodiment, in step S202, whether a temperature sensing unit corresponding to one temperature value fails is separately determined according to the one temperature value, when it is determined that neither temperature sensing unit fails, the two temperature values are compared, and according to a comparison result, one of the two temperature values is set to have a temporary failure, that is, the temporary failure is used as a redundant temperature sensing unit, and the other temperature value is set to be in a normal state, so that the TCMS can adopt the temperature value acquired by the temperature sensing unit in the normal state as the temperature value of the detection point.
As an optional implementation manner of S203, S203 may specifically include the following steps:
a1: a difference between the first temperature value and the second temperature value is obtained.
A2: judging whether the difference value is within a preset threshold range; if yes, go to step A3; if not, go to step A4.
For example, for convenience of understanding, the precision of the whole train temperature detection system is Y, the precision of the temperature sensing unit is ± a ℃, the precision of the temperature detection unit is ± b ℃, then Y [ -a-b, a + b ], and then the preset threshold range is [ -a-b, a + b ].
In this embodiment, the temperature detecting unit obtains a difference between the first temperature value and the second temperature value, and determines whether the difference is within the preset threshold range, if so, the step A3 is executed, otherwise, the step a4 is executed.
A3: the first temperature sensing unit and the second temperature sensing unit are both set to a normal state.
If the difference value between the first temperature value and the second temperature value is within the preset threshold range, which indicates that neither of the two temperature sensing units has a fault, the temperature sensing units are set to be in a normal state, the temperature detection unit can upload the first temperature value and the second temperature value to the TCMS, and according to specific requirements, the TCMS can adopt one of the two temperature values as the temperature detection value of the detection point, or can further process the two temperature values, for example, the average value of the two temperature values, as the temperature detection value of the detection point.
A4: and setting the temperature sensing unit with the lower value of the first temperature value and the second temperature value as a temporary fault.
In order to ensure the safety of the train, the temperature sensing unit with the higher temperature value is set to be in a normal state under the normal condition, and the temperature sensing unit with the lower temperature value is set to be in a temporary fault, so that the temperature detection unit judges the state of a detection point by using the temperature value collected by the temperature sensing unit in the normal state, and the over-temperature phenomenon of the part to be detected is avoided.
S204: and when the temperature sensing unit in the normal state is in fault, restoring the temperature sensing unit in the temporary fault state to the normal state.
And for the temperature sensing unit in the temporary fault, acquiring the temperature value all the time, and performing fault judgment, so that when the temperature sensing unit in the normal state is in fault, the temperature sensing unit in the temporary fault state can be reset to be in the normal state, and the temperature detection of the detection point is performed.
In this embodiment, the redundant temperature sensing units, that is, the temperature sensing units in the temporary fault state are used to replace the faulty temperature sensing units, so as to avoid the occurrence of the monitoring blind area, and at this time, the temperature detection unit can send the state information of the component to be detected to the TCMS according to the temperature value collected by the unlocked temperature sensing units.
According to the detection method provided by the embodiment of the application, the redundant temperature sensing units are arranged, whether each temperature sensing unit fails or not is judged independently, when the temperature sensing units do not fail, one temperature sensing unit is set to be in a temporary fault by comparing the temperature values of the two temperature sensing units, the other temperature sensing unit is in a normal state, when the temperature sensing unit in the normal state fails, the temperature sensing unit in the temporary fault can be unlocked and restored to the normal state, so that the temperature sensing unit in the fault is replaced for temperature detection, and by adding the temporary fault transition area, each detection point of the component to be detected can be guaranteed to be in a monitored state to the maximum extent, a monitoring blind area is avoided, and the running safety of a train is guaranteed.
Based on the train temperature detection method, the application also provides a train temperature detection device, and the detection device provided by the application is explained with reference to the attached drawings.
Referring to fig. 3, the train temperature detection device provided by the embodiment of the present application is used for detecting each detection point of a component to be detected, wherein a temperature sensing device is arranged on each detection point, and each temperature sensing device has a first temperature sensing unit and a second temperature sensing unit.
The apparatus may include:
the first detection unit 301 is configured to obtain a first temperature value of the first temperature sensing unit at a sampling time, and determine whether the first temperature sensing unit is faulty or not according to the first temperature value.
The second detecting unit 302 is configured to obtain a second temperature value of the second temperature sensing unit at the sampling time, and determine whether the second temperature sensing unit is faulty according to the second temperature value.
And the third detection unit 303 is configured to set one of the first temperature sensing unit and the second temperature sensing unit as a temporary fault and set the other one as a normal state according to a difference between the first temperature value and the second temperature value when the first temperature sensing unit and the second temperature sensing unit are not in fault, where the temperature sensing unit in the temporary fault state is in a working state but the acquired temperature value is not used for data processing, and the temperature value acquired by the temperature sensing unit in the normal state is used for data processing.
And a restoring unit 304 for restoring the temperature sensing unit in the temporary failed state to the normal state when the temperature sensing unit in the normal state is failed.
In some embodiments, the apparatus further comprises: and the reporting unit is used for reporting the fault state of the temperature sensing unit when the first temperature sensing unit or the second temperature sensing unit is in fault.
In some embodiments, the third detecting unit specifically includes, according to a difference between the first temperature value and the second temperature value:
obtaining a difference value between the first temperature value and the second temperature value; and judging whether the difference value is within a preset threshold range, if not, setting one of the second temperature sensing unit and the second temperature sensing unit as a temporary fault.
In some embodiments, the third detecting unit is further configured to set both the first temperature sensing unit and the second temperature sensing unit to a normal state when the difference is within a preset threshold range.
In some embodiments, the setting of one of the first temperature sensing unit and the second temperature sensing unit as the temporary failure in the third detection unit includes: and setting the temperature sensing unit with the lower value of the first temperature value and the second temperature value as a temporary fault.
It should be noted that, in the detection apparatus of this embodiment, the setting and the function of each unit or module can be implemented by referring to the method shown in fig. 2, and are not described herein again.
By the detection device provided by the embodiment of the application, a first temperature value of a first temperature sensing unit and a second temperature value of a second temperature sensing unit are respectively obtained at the same time, whether the first temperature sensing unit and the second temperature sensing unit have faults or not is respectively judged according to the first temperature value and the second temperature value, when neither temperature sensing unit has a fault, the difference between the first temperature value and the second temperature value is judged, one temperature sensing unit is set to be in a temporary fault according to the difference result, the other temperature sensing unit is in a normal state, the temperature sensing unit in the temporary fault state is still in a working state, but the collected temperature value is not used for data processing, only the temperature value collected by the temperature sensing unit in the normal state is subjected to data processing, and when the temperature sensing unit in the normal state has a fault, the temperature sensing unit in the temporary fault state is unlocked, and the normal state is recovered. Therefore, according to the method provided by the application, whether each temperature sensing unit fails or not can be judged independently, when the temperature sensing units do not fail, one of the temperature sensing units is set to be in a temporary fault by comparing the temperature values of the two temperature sensing units, so that the temperature sensing unit is in a locked state, the other temperature sensing unit is in a normal state, when the temperature sensing unit in the normal state fails, the temperature sensing unit in the temporary fault can be unlocked, the temperature sensing unit is recovered to the normal state, the temperature sensing unit in the fault is replaced for temperature detection, and by adding the temporary fault transition area, each detection point of the component to be detected can be guaranteed to be in a monitored state in real time to the maximum extent, a monitoring blind area is avoided, and the running safety of a train is guaranteed.
Based on the embodiment of the detection method and the device, the application also provides a train temperature detection system, and the system is explained with reference to the accompanying drawings.
Referring to fig. 4, the figure is a train temperature detection system provided in the embodiment of the present application.
The system comprises a temperature sensing device 400, a train temperature detection device 500 and a train control and management system 600, wherein the train temperature detection device 500 and the train control and management system 600 are in communication connection, such as a Multifunctional Vehicle Bus (MVB).
The temperature sensing device 400 is disposed at each detection point of the to-be-detected member, and includes a first temperature sensing unit 401 and a second temperature sensing unit 402.
The train temperature detection device 500 may be the temperature detection device shown in fig. 3 to perform the method described in fig. 2.
The train control and management system 600 is used for receiving the data sent by the train temperature detection device 500.
The above description is only the preferred embodiment of the present application, and the various embodiments in the specification are described in a progressive manner, and the same and similar parts among the various embodiments are referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for system embodiments, since they are substantially similar to method embodiments, they are described in a relatively simple manner, and reference may be made to some descriptions of method embodiments for relevant points. The above-described system embodiments are merely illustrative, wherein the modules or units described as separate parts may or may not be physically separate, and the parts displayed as modules or units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Although the present application has been described with reference to preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can now make numerous possible variations and modifications to the disclosed embodiments, or modify equivalent embodiments, using the methods and techniques disclosed above, without departing from the scope of the claimed embodiments. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present application still fall within the protection scope of the technical solution of the present application without departing from the content of the technical solution of the present application.
Claims (8)
1. A train temperature detection method is characterized in that a temperature sensing device is arranged on each detection point of a component to be detected, the temperature sensing device is provided with a first temperature sensing unit and a second temperature sensing unit, and the detection method comprises the following steps:
respectively obtaining a first temperature value of the first temperature sensing unit and a second temperature value of the second temperature sensing unit at the same sampling moment;
judging whether the first temperature sensing unit is in fault according to the first temperature value, and judging whether the second temperature sensing unit is in fault according to the second temperature value;
if the first temperature value and the second temperature value are not within the preset threshold range, judging whether the difference value of the first temperature value and the second temperature value is within the preset threshold range, if not, setting one of the first temperature sensing unit and the second temperature sensing unit as a temporary fault, setting the other one as a normal state, enabling the temperature sensing unit in the temporary fault state to be in a working state but not enabling the acquired temperature value to be used for data processing, and enabling the temperature sensing unit in the normal state to acquire the temperature value to be used for data processing;
and when the temperature sensing unit in the normal state is in fault, restoring the temperature sensing unit in the temporary fault state to the normal state.
2. The temperature detection method according to claim 1, further comprising: and reporting the fault state of the temperature sensing unit when the first temperature sensing unit or the second temperature sensing unit is in fault.
3. The temperature detection method according to claim 1, further comprising: and when the difference value is within a preset threshold value range, setting the first temperature sensing unit and the second temperature sensing unit to be in a normal state.
4. The temperature sensing method of claim 1, wherein said setting one of the first temperature sensing unit and the second temperature sensing unit to a temporary fault comprises:
and setting the temperature sensing unit with the lower value of the first temperature value and the second temperature value as a temporary fault.
5. The train temperature detection device is characterized in that a temperature sensing device is arranged on each detection point of a component to be detected, the temperature sensing device is provided with a first temperature sensing unit and a second temperature sensing unit, and the detection device comprises:
the first detection unit is used for obtaining a first temperature value of the first temperature sensing unit at the sampling moment and judging whether the first temperature sensing unit is in fault or not according to the first temperature value;
the second detection unit is used for obtaining a second temperature value of the second temperature sensing unit at the sampling moment and judging whether the second temperature sensing unit is in fault or not according to the second temperature value;
the third detection unit is used for judging whether the difference value between the first temperature value and the second temperature value is within a preset threshold value range or not when the first temperature sensing unit and the second temperature sensing unit are not in fault, if not, one of the first temperature sensing unit and the second temperature sensing unit is set to be in temporary fault, the other one is in a normal state, the temperature sensing unit in the temporary fault state is in a working state, but the acquired temperature value is not used for data processing, and the temperature value acquired by the temperature sensing unit in the normal state is used for data processing;
and the recovery unit is used for recovering the temperature sensing unit in the temporary fault state to be in the normal state when the temperature sensing unit in the normal state is in fault.
6. The detecting device according to claim 5, wherein the third detecting unit is further configured to set both the first temperature sensing unit and the second temperature sensing unit to a normal state when the difference is within a preset threshold range.
7. The detecting device according to claim 5, wherein the setting of one of the first temperature sensing unit and the second temperature sensing unit as a temporary failure in the third detecting unit includes:
and setting the temperature sensing unit with the lower value of the first temperature value and the second temperature value as a temporary fault.
8. A train temperature detection system, comprising:
the temperature sensing device is arranged on each detection point of the part to be detected and is provided with a first temperature sensing unit and a second temperature sensing unit;
the train temperature detection device according to any one of claims 5 to 7;
and the train control and management system is in communication connection with the train temperature detection device.
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| CN112051465A (en) * | 2020-08-25 | 2020-12-08 | 中国航空工业集团公司沈阳飞机设计研究所 | Fault detection method and system for dual-channel airborne temperature sensor |
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| CN103344271B (en) * | 2013-07-22 | 2015-12-23 | 中国航空动力机械研究所 | The signal acquiring system of sensor malfunction diagnostic device and method and sensor |
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