CN219799763U - Train speed measuring radar fault detection device - Google Patents
Train speed measuring radar fault detection device Download PDFInfo
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- CN219799763U CN219799763U CN202320964947.9U CN202320964947U CN219799763U CN 219799763 U CN219799763 U CN 219799763U CN 202320964947 U CN202320964947 U CN 202320964947U CN 219799763 U CN219799763 U CN 219799763U
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Abstract
The utility model discloses a train speed measuring radar fault detection device, which comprises: the system comprises a current collector, a vehicle-mounted speed and distance measuring board card, a radar signal simulation device and an upper computer; wherein: the output end of the radar signal simulation device is connected with the input end of the detected speed measuring radar, the output end of the detected speed measuring radar is connected with the input end of the vehicle-mounted speed measuring and distance measuring board card, the working current detection end of the detected speed measuring radar is connected with the input end of the current collector, the output end of the current collector is connected with the input end of the upper computer, the radar signal simulation device and the vehicle-mounted speed measuring and distance measuring board card are both connected with the upper computer in a bidirectional mode. The device can realize automatic and accurate fault detection of the train speed measuring radar.
Description
Technical Field
The utility model relates to the technical field of train speed measuring radar fault detection, in particular to a train speed measuring radar fault detection device.
Background
The vehicle-mounted speed and distance measuring equipment mainly comprises a wheel axle speed measuring radar, a speed measuring radar and a speed measuring and distance measuring processing unit, is an important component of a train operation control system, and is mainly used for realizing the functions of speed measurement, distance measurement, accurate train positioning and the like of a vehicle-mounted ATP (Automatic Train Protection ) and ATO (Automatic Train Operation, automatic train driving) system in the train operation process, and the service performance state of the vehicle-mounted speed and distance measuring radar and the train accurate positioning system is directly related to running safety and operation efficiency.
The existing signal operation and maintenance has the defects that faults are difficult to divide into specific parts, the fault detection means mainly depend on manpower, the efficiency is low, the fault characteristic acquisition means is single and the like; meanwhile, an effective equipment service state detection means is lacked, equipment fault verification and reproduction mainly depend on online testing, and operation is complex. Therefore, the device capable of realizing off-line detection of the speed and distance measuring equipment and detecting equipment faults has great significance for on-site operation and maintenance work.
In terms of speed measuring radar fault detection and service state detection methods, the existing technical scheme is single in fault detection method of speed measuring and distance measuring equipment, and mainly depends on a method for analyzing a running log or a mechanical motion simulation device, but information recorded in the running log is very limited, meanwhile, the detection method for analyzing the running log is low in efficiency, and the requirements on field operation and maintenance experience of operation and maintenance personnel are high. The speed simulation of the mechanical motion simulation device is lower in line, and the test requirement of a high-speed working condition cannot be met.
In terms of equipment fault types, the speed measuring radar faults are mostly accidental instant faults, and for a multi-sensor vehicle-mounted train control system, the specific fault sensor is difficult to quickly locate when the speed measuring and distance measuring system is faulty; in the operation and maintenance strategy of the current vehicle-mounted signal equipment, although the fault positioning of the subsystem level can be realized, the fault positioning of the component level is mainly realized by manually traversing and replacing all the component parts of the fault subsystem; therefore, it is necessary to design a fault detection device for the train speed measuring radar so as to realize automatic and accurate fault detection of the train speed measuring radar.
Disclosure of Invention
The utility model aims to provide a fault detection device for a train speed measurement radar, which can realize automatic and accurate fault detection of the train speed measurement radar.
The utility model aims at realizing the following technical scheme:
a train speed measurement radar fault detection device, comprising: the system comprises a current collector, a vehicle-mounted speed and distance measuring board card, a radar signal simulation device and an upper computer; wherein:
the output end of the radar signal simulation device is connected with the input end of the detected speed measuring radar, the output end of the detected speed measuring radar is connected with the input end of the vehicle-mounted speed measuring and distance measuring board card, the working current detection end of the detected speed measuring radar is connected with the input end of the current collector, the output end of the current collector is connected with the input end of the upper computer, the radar signal simulation device and the vehicle-mounted speed measuring and distance measuring board card are both connected with the upper computer in a bidirectional mode.
According to the technical scheme provided by the utility model, the working current signals of the speed measuring radar are acquired through the current collector, and the speed measuring signals of the speed measuring radar are acquired through the vehicle-mounted speed measuring and distance measuring board card, so that the fault state of the speed measuring radar can be determined through the upper computer, and various detection requirements and use scenes are fully met.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a hardware architecture diagram of a fault detection device for a speed measuring radar of a train, which is provided by an embodiment of the utility model;
FIG. 2 is a schematic diagram of input of a parameter of an artificial programmable detection logic according to an embodiment of the present utility model
Fig. 3 is a flowchart illustrating an apparatus according to an embodiment of the present utility model.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to fall within the scope of the utility model.
The terms that may be used herein will first be described as follows:
the terms "comprises," "comprising," "includes," "including," "has," "having" or other similar referents are to be construed to cover a non-exclusive inclusion. For example: including a particular feature (e.g., a starting material, component, ingredient, carrier, formulation, material, dimension, part, means, mechanism, apparatus, step, procedure, method, reaction condition, processing condition, parameter, algorithm, signal, data, product or article of manufacture, etc.), should be construed as including not only a particular feature but also other features known in the art that are not explicitly recited.
The term "consisting of … …" is meant to exclude any technical feature element not explicitly listed. If such term is used in a claim, the term will cause the claim to be closed, such that it does not include technical features other than those specifically listed, except for conventional impurities associated therewith. If the term is intended to appear in only a clause of a claim, it is intended to limit only the elements explicitly recited in that clause, and the elements recited in other clauses are not excluded from the overall claim.
Unless specifically stated or limited otherwise, the terms "mounted," "connected," "secured," and the like should be construed broadly to include, for example: the connecting device can be fixedly connected, detachably connected or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms herein above will be understood by those of ordinary skill in the art as the case may be.
The utility model provides a train speed measuring radar fault detection device. What is not described in detail in the embodiments of the present utility model belongs to the prior art known to those skilled in the art. The specific conditions are not noted in the examples of the present utility model and are carried out according to the conditions conventional in the art or suggested by the manufacturer. The apparatus used in the examples of the present utility model did not identify the manufacturer and was a conventional product commercially available.
As shown in fig. 1, a hardware architecture diagram of a fault detection device for a speed measurement radar of a train according to an embodiment of the present utility model mainly includes: the system comprises a current collector, a vehicle-mounted speed and distance measuring board card, a radar signal simulation device and an upper computer; wherein: the output end of the radar signal simulation device is connected with the input end of the detected speed measuring radar, the output end of the detected speed measuring radar is connected with the input end of the vehicle-mounted speed measuring and distance measuring board card, the working current detection end of the detected speed measuring radar is connected with the input end of the current collector, the output end of the current collector is connected with the input end of the upper computer, the radar signal simulation device and the vehicle-mounted speed measuring and distance measuring board card are both connected with the upper computer in a bidirectional mode.
As shown in fig. 1, the upper computer includes: the first communication chip, the processor and the display are sequentially connected.
As shown in fig. 1, the radar signal simulation apparatus includes: the second communication chip, the first master controller and the radio frequency equipment are connected in sequence.
As shown in fig. 1, the current collector includes: and the analog-to-digital converter and the third communication chip are connected with each other.
As shown in fig. 1, the vehicle-mounted speed and distance measuring board comprises: the message parser, the second master controller and the fourth communication chip are connected in sequence.
As shown in fig. 1, the second communication chip in the radar signal simulation device is connected with the first communication chip in the upper computer in a bidirectional manner through an RS485 serial port.
As shown in fig. 1, a fourth communication chip in the vehicle-mounted speed and distance measuring board card is connected with a first communication chip in the upper computer in a bidirectional manner through an RS485 serial port.
As shown in fig. 1, the third communication chip in the current collector is connected with the first communication chip in the upper computer through a UDP network.
In the embodiment of the utility model, all the related communication chips are existing chips, and the chips with the same standard and the same model (or different models) can be used.
In the embodiment of the utility model, all the related main controllers are the existing main controllers, and the two main controllers can be of the same type or of different types, so that the normal working requirements can be met.
In the embodiment of the utility model, the processor and the display can select the existing products as well, and the normal working requirement can be met.
In the embodiment of the utility model, the radar signal simulation device, the flow collector and the vehicle-mounted speed and distance measuring board card can use the existing products, the specific model is not limited, and the requirements of normal work can be met.
For ease of understanding, the following description is made in detail with respect to the main principle of the above-described apparatus and the overall structure of the apparatus.
1. The device is mainly based on the principle.
1. Summary of the principles.
The radar signal simulation device is mainly used for completing Doppler signal simulation of the speed measuring radar so as to simulate the running process of the train. The radar signal simulation device mainly comprises a communication module, a main control module and a radio frequency module. The upper computer realizes the control and information transmission of the radar signal simulation device through the RS485 serial port. After the detection is started, the upper computer firstly transmits a speed control command to a first main controller of the radar signal simulation device, the first main controller controls the radio frequency equipment to output Doppler signals, and the first main controller utilizes the feedback information of the radio frequency equipment and the control command of the upper computer to complete closed-loop control of the Doppler signals. And the first main controller uploads the theoretical direction, the theoretical speed and the mileage information of the radar signal simulation device to the upper computer, and the upper computer completes comparison and analysis of the movement state information.
2. Fault detection logic.
1) And speed measuring radar fault detection logic.
The upper computer is connected with the standard vehicle-mounted speed and distance measuring processing board card and the radar signal simulation device through an RS485 serial port. The upper computer receives information (speed, direction and mileage) of the vehicle-mounted speed and distance measuring processing board card and the radar signal simulation device. And the performance state of the tested sensor is judged by calculating the difference value (speed difference and mileage difference) of the two information and combining an alarm strategy. If the result exceeding the judgment threshold is found, the upper computer outputs an alarm signal to inform a tester of early warning faults.
1.1 The speed threshold detection is mainly divided into target speed difference detection and speed measuring radar speed difference detection;
target speed difference detection:
wherein, the liquid crystal display device comprises a liquid crystal display device,v is the speed difference between the radar signal simulation device and the speed measuring radar target For theoretical speed, v in radar signal simulation apparatus rd The actual speed obtained for the speed measuring radar; the threshold is set as follows:
wherein V is warning For the early warning threshold value, V fault Is a fault threshold.
1.2 The mileage threshold detection is simulator mileage and speed measuring radar mileage difference detection;
and (3) mileage difference detection:
wherein, the liquid crystal display device comprises a liquid crystal display device,is the mileage difference value s of the radar signal simulation device and the speed measuring radar target Is the theoretical mileage value s of the radar signal simulation device rd The actual mileage value is obtained for the speed measuring radar; the threshold is set as follows:
wherein S is warning S is the early warning threshold value fault Is a fault threshold.
1.3 The working current detection is the difference detection of the nominal working current and the actual measured working current of the speed measuring radar;
and (3) current difference detection:
wherein, the liquid crystal display device comprises a liquid crystal display device,the mileage difference value, i, of the radar nominal current value and the speed measuring radar target Nominal operating current value, i, for speed measuring radar rd The measured current value of the speed measuring radar; the threshold is set as follows:
wherein I is warning For early warning threshold value, I fault Is a fault threshold.
3. Manually programmable detection logic.
The upper computer is reserved with a test strategy input port, and the duration, the maximum speed, the maximum acceleration and the idle running time of the test can be set according to different test requirements, as shown in fig. 2. The test logic has the advantages that the fault working condition is reproduced off line, and meanwhile, the speed sequence causing the speed measuring radar fault, such as the speed time sequence with high injection acceleration, can be edited. Under this logic, the user can edit the time sequence in a self-defined way, so that the detection content is more diversified.
4. Typical operating condition detection logic.
The driving data contains all driving information, a typical working condition speed curve can be extracted from the driving information, and the typical working condition of normal driving can be simulated through a typical working condition speed curve system, so that the service states of the speed measuring radar and the vehicle-mounted speed measuring and distance measuring processing board card under the typical working condition can be detected. The detection method has the advantages that the speed measuring radar can be tested in an off-line simulation mode without train on-line testing. The detection logic enables the detection process to be more in line with the actual working condition and fit the actual operation scene of the equipment.
5. And the speed measuring radar power supply detection logic.
The working current of the power supply of the speed measuring radar can be collected, and the collected information and the movement information measurement result of the speed measuring radar are submitted to an upper computer together for combined analysis and processing. Early warning is carried out when the speed measuring radar power supply works abnormally, and meanwhile, when the speed measuring radar works abnormally, whether the fault is caused by the fault of the sensor power supply module or not can be confirmed according to the working information, so that specific fault components are divided; the details are described in the foregoing 1.3).
1. The overall structure of the device.
As shown in fig. 1, the hardware architecture of the device mainly includes: the system comprises a current collector, a vehicle-mounted speed and distance measuring board card, a radar signal simulation device and an upper computer.
1. The upper computer mainly completes the following work:
1) Displaying the test process and the result through a display; specifically, the speed curve and the channel working current information among different channels of the detected speed measuring radar can be displayed.
2) The display can be a touch screen, and can specifically set and input parameters such as control commands, test working conditions, target speeds, test modes, radar calibration factors and the like.
3) Outputting a control command signal through the first communication chip to control the radar signal simulation device;
4) The vehicle-mounted speed and distance measuring processing board card is communicated with the current collector through the first communication chip;
5) And recording the test log through the processor, outputting a detection result, and generating a detection report according to the alarm strategy.
The upper computer provides rich interfaces for users, and can set the highest speed of speed measurement, the threshold value of pulse early warning, radar calibration factors, test duration and the like. In an automatic mode, the upper computer automatically detects according to a preset speed; in the manual mode, a user can drag the traction braking slider for manual testing, and five levels of traction and braking can be achieved. Meanwhile, all the test data are recorded in a table by the upper computer, and a detection report is generated after the test is completed.
2. The vehicle-mounted speed and distance measuring processing board mainly completes the processing of radar messages and outputs radar direction, speed and mileage information. Specifically, it mainly completes the following work: 1) Collecting radar messages; 2) Analyzing a radar message; 3) The radar data is calibrated using the radar calibration factor.
3. The working current acquisition unit can acquire the working current of the speed measuring radar power supply and send a current signal to the upper computer for analysis.
4. The radar signal simulator mainly completes execution of an upper computer and control commands, outputs multiple paving signals to simulate train movement, and sends speed values and mileage information corresponding to the simulation signals to the upper computer. The radar signal simulation device is communicated with the upper computer through an RS485 serial bus, receives a control signal from the upper computer and feeds back an actual simulation state signal to the upper computer. The upper computer receives data information from the radar signal simulation device and the vehicle-mounted speed and distance measuring processing board card through the RS485 serial bus. The current collector collects working current of the speed measuring radar by using a current collecting card, and transmits a current signal to the upper computer by using a UDP network port.
As shown in fig. 2, a main workflow of the above device is shown, and in this workflow, the above machine is introduced as an execution subject, and mainly includes:
1) And initializing a display interface of the upper computer.
2) Judging whether the serial port connection between the vehicle-mounted speed and distance measuring board card and the radar signal simulation device is correct or not; if the result is normal, the next step is carried out; otherwise, generating an alarm prompt.
3) Judging whether a user inputs detection parameters or not; if yes, the next step is carried out; otherwise, parameters are input to prompt.
4) Judging whether to start detection currently, if so, turning to the next step; otherwise, continuing to wait.
5) The detection is divided into two branches: the first branch is used for collecting a current signal through a current collector and judging whether the current is abnormal, if so, the step 6) is carried out, otherwise, the detection is continued; the second branch is to obtain the actual value measured by the test radar through the vehicle-mounted speed and distance measuring board card, compare the actual value with the theoretical value, judge whether legal, if not, go to step 6), if yes, go to step 7).
6) An alarm prompt is generated.
7) Judging whether the set detection duration is reached, if so, turning to the next step, and if not, turning to the step 5).
8) And (5) ending the detection and outputting a detection report.
It should be noted that the above description of the device principle and the workflow is mainly for facilitating understanding of the internal configuration of the device. Based on the device structure shown in fig. 1, automatic and accurate fault detection of the train speed measuring radar is mainly realized; on the basis of the method, related applications can be expanded according to actual needs: 1) The train speed measuring radar is automatically detected offline, the system automatically records a detection log, and automatically generates a test report, so that the labor intensity of operation and maintenance personnel is reduced, and the operation and maintenance efficiency is improved; 2) Through a plurality of test parameter input interfaces with high self-definable degree, various test requirements can be met, and the editable real working condition data are utilized for detection, so that the detection result is more reliable; 3) The typical working condition detection logic can simulate by utilizing an actual working condition speed curve, so that the purposes of detecting the precision of new equipment, detecting the reliability of the equipment and the like are achieved.
The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present utility model should be included in the scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the protection scope of the claims.
Claims (8)
1. The utility model provides a train speed measurement radar fault detection device which characterized in that includes: the system comprises a current collector, a vehicle-mounted speed and distance measuring board card, a radar signal simulation device and an upper computer; wherein:
the output end of the radar signal simulation device is connected with the input end of the detected speed measuring radar, the output end of the detected speed measuring radar is connected with the input end of the vehicle-mounted speed measuring and distance measuring board card, the working current detection end of the detected speed measuring radar is connected with the input end of the current collector, the output end of the current collector is connected with the input end of the upper computer, the radar signal simulation device and the vehicle-mounted speed measuring and distance measuring board card are both connected with the upper computer in a bidirectional mode.
2. The train speed measurement radar fault detection device according to claim 1, wherein the upper computer comprises: the first communication chip, the processor and the display are sequentially connected.
3. The radar fault detection apparatus for speed measurement of train according to claim 1, wherein the radar signal simulation apparatus comprises: the second communication chip, the first master controller and the radio frequency equipment are connected in sequence.
4. The apparatus for detecting a fault in a speed sensor of a train according to claim 1, wherein the current collector comprises: and the analog-to-digital converter and the third communication chip are connected with each other.
5. The device for detecting faults of a train speed measuring radar according to claim 1, wherein the vehicle-mounted speed measuring and distance measuring board card comprises: the message parser, the second master controller and the fourth communication chip are connected in sequence.
6. The train speed measurement radar fault detection device according to claim 1, wherein the second communication chip in the radar signal simulation device is connected with the first communication chip in the upper computer in a bidirectional manner through an RS485 serial port.
7. The train speed measurement radar fault detection device according to claim 1, wherein the fourth communication chip in the vehicle-mounted speed measurement and distance measurement board card is in bidirectional connection with the first communication chip in the upper computer through an RS485 serial port.
8. The train speed measurement radar fault detection device according to claim 1, wherein the third communication chip in the current collector is connected with the first communication chip in the upper computer through a UDP network.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202320964947.9U CN219799763U (en) | 2023-04-25 | 2023-04-25 | Train speed measuring radar fault detection device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202320964947.9U CN219799763U (en) | 2023-04-25 | 2023-04-25 | Train speed measuring radar fault detection device |
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| CN219799763U true CN219799763U (en) | 2023-10-03 |
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