阅读说明：本技术 车轮传感器性能检测装置、系统及方法 (Wheel sensor performance detection device, system and method ) 是由 宋超 于 2020-06-24 设计创作，主要内容包括：一种车轮传感器性能检测装置、系统及方法,属于铁路车辆检测设备领域。本发明为解决现有车轮传感器的性能检测采用人工方式进行,测试结果可靠性差并且容易损坏设备的问题。装置包括：控制器,用于发送模拟信号驱动指令；模拟信号发生器,用于根据所述模拟信号驱动指令输出车轮模拟信号；信号发送天线,用于将车轮模拟信号发送至车轮传感器；所述信号发送天线包括一号信号发送天线和二号信号发送天线。本发明可使用于铁路车辆检测设备中。(A wheel sensor performance detection device, system and method belong to the field of railway vehicle detection equipment. The invention aims to solve the problems that the performance detection of the existing wheel sensor is carried out in a manual mode, the reliability of a test result is poor, and equipment is easy to damage. The device comprises: the controller is used for sending an analog signal driving instruction; the analog signal generator is used for outputting a wheel analog signal according to the analog signal driving instruction; the signal transmitting antenna is used for transmitting the wheel analog signal to the wheel sensor; the signal transmitting antenna comprises a first signal transmitting antenna and a second signal transmitting antenna. The invention can be used in a railway vehicle detection device.)

1. A wheel sensor performance detection device characterized by comprising:

the controller is used for sending an analog signal driving instruction;

the analog signal generator is used for outputting a wheel analog signal according to the analog signal driving instruction;

the signal transmitting antenna is used for transmitting the wheel analog signal to the wheel sensor;

the signal transmitting antenna comprises a first signal transmitting antenna and a second signal transmitting antenna.

2. The wheel sensor performance detecting device according to claim 1,

the wheel sensors comprise a first wheel sensor and a second wheel sensor;

the first signal transmitting antenna is arranged corresponding to the first wheel sensor, and the second signal transmitting antenna is arranged corresponding to the second wheel sensor.

3. The wheel sensor performance detecting device according to claim 2, characterized by further comprising:

a key for inputting setting information to the controller; the setting information includes:

during single signal test, setting the running speed of the train or the time interval of sending wheel analog signals by the two signal sending antennas;

during multiple signal tests, the time interval, the train type or the test times of the adjacent single signal tests;

and the display screen is used for displaying the setting information.

4. A wheel sensor performance detection system comprising the wheel sensor performance detection device according to claim 3, a wheel sensor number one, a wheel sensor number two, and a rail edge detection apparatus,

the controller of the wheel sensor performance detection device controls the analog signal generator to output wheel analog signals according to the set information and transmits the wheel analog signals to the corresponding wheel sensors through the signal transmitting antenna;

the first wheel sensor and the second wheel sensor are used for receiving the wheel analog signals and sending detection signals outwards;

and the rail edge detection equipment is used for receiving the detection signal and carrying out speed measurement and axle counting on the train according to the detection signal.

5. The wheel sensor performance detecting system according to claim 4,

and the rail edge detection equipment is also used for comparing the speed measurement result and the axle counting result with corresponding set information and judging the performance state of the wheel sensor according to the comparison result.

6. The wheel sensor performance detecting system according to claim 4,

and the rail edge detection equipment is also used for displaying a speed measurement result and an axle counting result.

7. A wheel sensor performance detection method implemented based on the wheel sensor performance detection system according to any one of claims 4 to 6,

the controller calculates the time difference of the train passing through the two wheel sensors according to the set train running speed and the installation distance of the two wheel sensors; according to the direction of the coming vehicle, the analog signal generator is sequentially controlled to output two wheel analog signals according to the time difference, the former wheel analog signal is transmitted by the first signal transmitting antenna, and the latter wheel analog signal is transmitted by the second signal transmitting antenna;

the working process of the controller comprises the following steps:

single signal transmission flow: the first signal sending antenna transmits the first wheel analog signal to the first wheel sensor; after the time of delta t is delayed, the analog signal generator is controlled to output a second wheel analog signal, and the second signal sending antenna transmits the second wheel analog signal to the second wheel sensor.

8. The wheel sensor performance detecting method according to claim 7,

the two wheel sensors are installed close to a train steel rail, and the installation distance is s;

and if the set train running speed is v, the time difference delta t between the first signal transmitting antenna and the second signal transmitting antenna for transmitting the wheel analog signals is as follows:

Δt＝s/v；

if the time difference between the first wheel sensor and the second wheel sensor which receive the wheel analog signals and send detection signals outwards is delta t ', the actual running speed v' of the train is as follows:

v’＝s/Δt’,

and comparing the actual running speed v 'of the train with the set running speed v of the train, and if the difference value of the actual running speed v' of the train and the set running speed v of the train is within a set threshold value, judging that the speed measuring state is normal.

9. The wheel sensor performance detecting method according to claim 7,

after finishing a single signal sending process, the controller delays a preset time interval T and continues to implement the single signal sending process until finishing N single signal sending processes;

the rail edge detection equipment counts the times of sending detection signals by the two wheel sensors, and if the times of sending the detection signals by each wheel sensor is N, the axle counting state of the wheel sensor is judged to be normal.

10. The wheel sensor performance detecting method according to claim 9,

the preset time interval T is set according to the train type;

and the rail side detection equipment judges the train type according to the time interval of the detection signal sent by each wheel sensor in two adjacent single signal sending processes, and if the judged train type is consistent with the train type in the set information, the rail side detection equipment starts to receive the train, and further judges that the axle counting state of the wheel sensor and the train receiving working logic of the rail side equipment are normal.

Technical Field

The invention relates to a device, a system and a method for detecting the performance of a wheel sensor, belonging to the field of railway vehicle detection equipment.

Background

Rail side detection equipment such as a freight car running fault dynamic image detection system (TFDS) and an infrared axle temperature detection system (THDS) use two wheel sensors which are installed according to a fixed distance to complete axle counting and speed measuring functions when a train passes through. As a core component, the accurate axle counting and speed measurement of the wheel sensor are the prerequisites that the rail edge detection equipment normally works.

At present, a method for detecting the online performance of a wheel sensor of rail edge detection equipment is that one person uses a magnetic conductive metal object (such as a wrench) to cross the surface of a magnetic steel of the sensor outdoors, and the other person observes whether a magnetic steel signal is output on a control computer of the rail edge detection equipment indoors, so as to judge whether the magnetic steel function of the wheel sensor is normal.

The existing detection method has the following problems:

1) when the magnetic conductive metal object scratches the magnetic steel of the wheel sensor, the position of the scratch and the speed of the scratching cannot be grasped, so that whether the wheel sensor can normally output signals cannot be accurately judged. Because the times of scratching on the magnetic steel surface of the wheel sensor and the output signal of the magnetic steel surface do not have a complete corresponding relationship, the conventional detection method cannot judge whether the axle counting of the rail edge detection equipment is normal or not, and only can roughly judge whether the function of the axle counting is normal or not. In addition, because the surface of the wheel sensor has stronger magnetism, the wheel sensor is easy to be absorbed when being scratched by a magnetic conductive metal object, so that a plurality of continuous signals can be generated in the moment by an upper computer, and the functional state of the wheel sensor is more difficult to judge. Also, when the wheel sensor catches the wrench, it may cause damage to the wheel sensor housing and injury to personnel.

2) The test of the speed measurement accuracy and the speed response range can not be carried out:

when the wheel sensor has wheels on the surface, the acquired sensing signals are transmitted to the control software of the rail side detection equipment through the connecting cable, the wheel sensor processing device, the data acquisition card and the computer operating system in sequence. In the signal transmission links, the problems of shaft loss, abnormal speed measurement, even functional failure of the rail edge detection equipment and the like can be caused by signal loss or delay in any link. The conventional detection method of the wheel sensor can not test the speed measurement accuracy and the speed response range of the whole system of the rail side detection equipment on the basis that the axle counting function can not ensure accurate measurement.

Disclosure of Invention

The invention provides a device, a system and a method for detecting the performance of a wheel sensor, aiming at the problems that the performance of the existing wheel sensor is detected manually, the reliability of a test result is poor, and equipment is easy to damage.

The first technical scheme of the invention is as follows: a wheel sensor performance detecting device comprising:

the controller is used for sending an analog signal driving instruction;

the analog signal generator is used for outputting a wheel analog signal according to the analog signal driving instruction;

the signal transmitting antenna is used for transmitting the wheel analog signal to the wheel sensor;

the signal transmitting antenna comprises a first signal transmitting antenna and a second signal transmitting antenna.

According to the wheel sensor performance detecting apparatus of the present invention,

the wheel sensors comprise a first wheel sensor and a second wheel sensor;

the first signal transmitting antenna is arranged corresponding to the first wheel sensor, and the second signal transmitting antenna is arranged corresponding to the second wheel sensor.

The wheel sensor performance detection device according to the present invention further includes:

a key for inputting setting information to the controller; the setting information includes:

during single signal test, setting the running speed of the train or the time interval of sending wheel analog signals by the two signal sending antennas;

during multiple signal tests, the time interval, the train type or the test times of the adjacent single signal tests;

and the display screen is used for displaying the setting information.

The second technical scheme of the invention is as follows: a performance detection system of a wheel sensor comprises the performance detection device of the wheel sensor, a first wheel sensor, a second wheel sensor and a rail edge detection device,

the controller of the wheel sensor performance detection device controls the analog signal generator to output wheel analog signals according to the set information and transmits the wheel analog signals to the corresponding wheel sensors through the signal transmitting antenna;

the first wheel sensor and the second wheel sensor are used for receiving the wheel analog signals and sending detection signals outwards;

and the rail edge detection equipment is used for receiving the detection signal and carrying out speed measurement and axle counting on the train according to the detection signal.

According to the wheel sensor performance detecting system of the present invention,

and the rail edge detection equipment is also used for comparing the speed measurement result and the axle counting result with corresponding set information and judging the performance state of the wheel sensor according to the comparison result.

According to the wheel sensor performance detecting system of the present invention,

and the rail edge detection equipment is also used for displaying a speed measurement result and an axle counting result.

The third technical scheme of the invention is as follows: a performance detection method of a wheel sensor is realized based on the performance detection system of the wheel sensor,

the controller calculates the time difference of the train passing through the two wheel sensors according to the set train running speed and the installation distance of the two wheel sensors; according to the direction of the coming vehicle, the analog signal generator is sequentially controlled to output two wheel analog signals according to the time difference, the former wheel analog signal is transmitted by the first signal transmitting antenna, and the latter wheel analog signal is transmitted by the second signal transmitting antenna;

the working process of the controller comprises the following steps:

single signal transmission flow: the first signal sending antenna transmits the first wheel analog signal to the first wheel sensor; after the time of delta t is delayed, the analog signal generator is controlled to output a second wheel analog signal, and the second signal sending antenna transmits the second wheel analog signal to the second wheel sensor.

According to the wheel sensor performance detecting method of the present invention,

the two wheel sensors are installed close to a train steel rail, and the installation distance is s;

and if the set train running speed is v, the time difference delta t between the first signal transmitting antenna and the second signal transmitting antenna for transmitting the wheel analog signals is as follows:

Δt＝s/v；

if the time difference between the first wheel sensor and the second wheel sensor which receive the wheel analog signals and send detection signals outwards is delta t ', the actual running speed v' of the train is as follows:

v’＝s/Δt’,

and comparing the actual running speed v 'of the train with the set running speed v of the train, and if the difference value of the actual running speed v' of the train and the set running speed v of the train is within a set threshold value, judging that the speed measuring state is normal.

According to the wheel sensor performance detecting method of the present invention,

after finishing a single signal sending process, the controller delays a preset time interval T and continues to implement the single signal sending process until finishing N single signal sending processes;

the rail edge detection equipment counts the times of sending detection signals by the two wheel sensors, and if the times of sending the detection signals by each wheel sensor is N, the axle counting state of the wheel sensor is judged to be normal.

According to the wheel sensor performance detecting method of the present invention,

the preset time interval T is set according to the train type;

and the rail side detection equipment judges the train type according to the time interval of the detection signal sent by each wheel sensor in two adjacent single signal sending processes, and if the judged train type is consistent with the train type in the set information, the rail side detection equipment starts to receive the train, and further judges that the axle counting state of the wheel sensor and the train receiving working logic of the rail side equipment are normal.

The invention has the beneficial effects that: the invention can be used in a railway vehicle detection device, for example for maintenance of a rail edge detection device.

The invention tests whether the output of the wheel sensor accords with the expected value by sending the simulated train passing signal to the wheel sensor; the controller controls the analog signal generator to generate wheel analog signals, and the wheel analog signals are transmitted to the wheel sensor through the signal transmitting antenna, so that the performance state of the wheel sensor is judged, and meanwhile, whether the working logic sequence of the rail edge detection equipment meets the expectation or not can be further tested, if the working logic sequence is normal, the rail edge detection equipment starts to work, and the like.

The invention replaces the existing manual mode with the perfect testing process to realize the performance detection of the wheel sensor, and avoids various uncertain factors caused by individual reasons during manual operation, thereby ensuring the reliability of the testing result and not causing any damage to the equipment.

Drawings

FIG. 1 is a block diagram of a wheel sensor performance detection system according to the present invention;

fig. 2 is a schematic diagram of an embodiment of the detection system of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

The invention is further described with reference to the following drawings and specific examples, which are not intended to be limiting.