CN212055618U - Real-time intelligent detection system for vehicle brake shoe based on RFID - Google Patents
Real-time intelligent detection system for vehicle brake shoe based on RFID Download PDFInfo
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- CN212055618U CN212055618U CN202020528516.4U CN202020528516U CN212055618U CN 212055618 U CN212055618 U CN 212055618U CN 202020528516 U CN202020528516 U CN 202020528516U CN 212055618 U CN212055618 U CN 212055618U
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Abstract
The utility model discloses a real-time intelligent detection system of vehicle brake shoe based on RFID, including radio frequency identification device, reader, electronic tags, temperature measuring device, pressure measuring device, thickness measuring device and data distribution and alarm device, after the radio frequency signal that the reader sent is received to the electronic tags, the radio frequency identification device carries out power supply and read-write operation to the electronic tags, simultaneously the temperature measuring device and the pressure measuring device transmit the monitored temperature value and pressure value to the electronic tags, the reader will receive the tag information, temperature value and pressure value of the electronic tags, and combine the thickness that the thickness measuring device gathered together to transmit to the data distribution and alarm device for gathering and storing, and when any data in the temperature value, pressure value and thickness of brake shoe surpass the set threshold value, automatic alarm, promote brake shoe and detect application range and the degree of accuracy of structure.
Description
Technical Field
The utility model relates to a vehicle brake shoe detects technical field, especially relates to a real-time intelligent detection system of vehicle brake shoe based on RFID.
Background
The operating train is widely braked on the basis of brake shoe braking, and the brake shoe is a tile-shaped brake block made of cast iron or other materials, holds the tread of the wheel tightly during braking, and stops the wheel from rotating through friction. The composite material constituting the brake shoe inevitably wears out due to friction, so that the brake shoe needs to be periodically tested and replaced before the composite material is worn out to avoid accidents. The existing detection method is a manual detection method, namely, the thickness of each brake shoe is manually observed at each vehicle maintenance point, and whether the brake shoe needs to be replaced is judged according to experience. This method has a number of disadvantages: firstly, a certain deviation exists in manual measurement and judgment, which may cause potential safety hazards or waste problems; secondly, each vehicle has 8 brake shoes (about 500 brake shoes and 800 brake shoes for a train) which need to be detected respectively, and the manual detection is long in time consumption and high in cost, so that the running efficiency of the train is seriously influenced. When the vehicle is braked, the real-time temperature and pressure of the brake shoe can be changed in real time according to the braking force, and when the braking effect is influenced due to insufficient braking force, an alarm is given, so that the method and the device have important significance for improving the running safety of the vehicle. The detection of real-time temperature and pressure of a brake shoe of a running vehicle is still a technical blank at present, and only the thickness of the brake shoe is detected and the real-time temperature and pressure of the brake shoe are not detected in the detection of the brake shoe at present. And it is necessary to provide a trigger sensor on the track and a camera inside the track, which is not practical because it may pose a threat to the driving safety of the vehicle. Meanwhile, the identity of the brake shoe is not identified in the prior art, so that the application range and the accuracy of the brake shoe detection result are very limited.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a real-time intelligent detection system of vehicle brake shoe based on RFID promotes the application range and the degree of accuracy that the brake shoe detected the structure.
In order to achieve the above object, the present invention provides a real-time intelligent detection system for a vehicle brake shoe based on RFID, which comprises a radio frequency identification device, a reader, an electronic tag, a temperature measuring device, a pressure measuring device, a thickness measuring device and a data distribution and alarm device, wherein the radio frequency identification device is connected to the electronic tag, the reader is connected to the electronic tag, both the temperature measuring device and the pressure measuring device are connected to the electronic tag, the thickness measuring device is connected to the reader, the data distribution and alarm device is connected to the reader,
the radio frequency identification device is used for supplying power to the electronic tag and reading and writing the electronic tag;
the reader is used for sending signals to the electronic tag, receiving return signals of the electronic tag, and transmitting the return signals to the data distribution and alarm device in combination with the received signals of the thickness measuring device;
the electronic tag is used for receiving a signal sent by the reader, transmitting required data to the reader and simultaneously receiving data sent by the temperature measuring device and the pressure measuring device;
the temperature measuring device is used for measuring the temperature value of the brake shoe in real time and transmitting the temperature value to the electronic tag;
the pressure measuring device is used for measuring the pressure value borne by the brake shoe in real time and transmitting the pressure value to the electronic tag;
the thickness measuring device is used for measuring the thickness of the brake shoe by using an image processing technology and transmitting the thickness to the reader;
and the data distribution and alarm device is used for summarizing and storing the data transmitted by the reader and automatically giving an alarm when any data of the temperature value, the pressure value and the thickness of the brake shoe exceeds a set threshold value.
Wherein, the reader comprises a first receiving and transmitting antenna, a first demodulation circuit, a microprocessor, a first modulation circuit, a frequency generator and a phase-locked loop, the first receiving and transmitting antenna is connected with the first demodulation circuit, the first demodulation circuit is connected with the microprocessor, the microprocessor is connected with the first modulation circuit, the phase-locked loop is connected with the first demodulation circuit and the first modulation circuit, the frequency generator is connected with the first demodulation circuit and the first modulation circuit, the first modulation circuit is also connected with the first receiving and transmitting antenna,
the first transceiving antenna is used for sending a radio frequency signal to the electronic tag and receiving a response signal and tag information returned by the electronic tag;
the first demodulation circuit is used for demodulating a signal returned by the electronic tag and transmitting the signal to the microprocessor for processing data;
the microprocessor is used for generating a signal to be sent to the electronic tag, decoding the signal returned by the electronic tag and returning data obtained by decoding to the first modulation circuit;
the first modulation circuit is used for loading a signal sent to the electronic tag to a carrier wave and sending the signal out by the first transceiving antenna;
the phase-locked loop is used for generating a carrier signal required by modulation;
the frequency generator is used for generating the working frequency of the reader.
Wherein, the reader also comprises a first memory and a first external interface, the first memory is connected with the microprocessor, the first external interface is connected with the first memory and also connected with the data distribution and alarm device and the thickness measuring device,
the first memory is used for storing a user program and brake shoe online information;
the first external interface is used for receiving the data transmitted by the thickness measuring device and transmitting the data in the reader to the data distribution and alarm device.
Wherein the electronic tag comprises a second transceiving antenna, a conversion circuit, a second demodulation circuit, a logic control circuit, a second memory and a second modulation circuit, the second transceiving antenna is connected with the conversion circuit, the second demodulation circuit is connected with the conversion circuit, the logic control circuit is connected with the second memory and the modulation circuit, the modulation circuit is connected with the conversion circuit,
the second transceiving antenna is used for receiving the radio frequency signal from the first transceiving antenna and returning a response signal and label information;
the conversion circuit is used for outputting the received electromagnetic field energy through a voltage stabilizing circuit and providing a stable power supply for the second demodulation circuit, the logic control circuit and the second modulation circuit;
the second demodulation circuit is configured to demodulate the received radio frequency signal;
the logic control circuit is used for decoding the received radio frequency signal;
the second memory is used for storing and updating the on-line information of the brake shoe;
the second modulation circuit is used for modulating the transmitted signal.
Wherein the electronic tag further comprises a second external interface, the second external interface is connected with the temperature measuring device and the pressure measuring device,
and the second external interface is used for receiving the temperature value and the pressure value of the brake shoe in real time.
Wherein the temperature measuring device comprises a temperature-sensitive resistor, an operational amplifier circuit and an analog-to-digital conversion circuit, the temperature-sensitive resistor is connected with the operational amplifier circuit, the operational amplifier circuit is connected with the analog-to-digital conversion circuit, the analog-to-digital conversion circuit is connected with the second external interface,
the temperature-sensitive resistor is used for changing a resistance value according to the temperature of the brake shoe so as to change a circuit signal in the temperature measuring device;
the operational amplifier circuit is used for amplifying a setting signal in the circuit signal;
and the analog-to-digital conversion circuit is used for converting the circuit signal into a digital signal and transmitting the digital signal to the second external interface.
Wherein the thickness measuring device comprises a high-definition camera and an image processor, the high-definition camera is connected with the image processor, the image processor is connected with the first external interface,
the high-definition camera is used for photographing the brake shoe and transmitting the obtained image to the image processor;
and the image processor is used for transmitting the image to the first external interface after filtering and gray scale processing.
Wherein the thickness measuring device also comprises a machine learning controller which is connected with the high-definition camera,
and the machine learning controller is used for controlling the high-definition camera to photograph the brake shoe for multiple times.
Wherein the data distribution and alarm device comprises a data memory and an alarm, the data memory is connected with the first external interface, the alarm is connected with the data memory,
the data memory is used for receiving the data transmitted by the first external interface and performing summary storage;
and the alarm is used for analyzing and comparing the data in the data storage with a set threshold value and automatically sending an alarm signal to give an alarm when the data is smaller than the set threshold value.
The utility model discloses a vehicle brake shoe real-time intelligent detection system based on RFID, vehicle brake shoe real-time intelligent detection system based on RFID includes radio frequency identification device, reader, electronic tags, temperature measuring device, pressure measurement device, thickness measurement device and data distribution and alarm device, radio frequency identification device with the electronic tags is connected, the reader with the electronic tags is connected, temperature measurement device and the pressure measurement device all with the electronic tags is connected, thickness measurement device with the reader is connected, data distribution and alarm device with the reader is connected, when the radio frequency signal that the reader sent is received to the electronic tags, radio frequency identification device carries out power supply and read-write operation to the electronic tags, simultaneously temperature measurement device with the pressure measurement device with the real-time temperature value of monitoring and pressure value transmission to the electronic tags, then the electronic tag transmits the tag information, the temperature value and the pressure value back to the reader, the reader transmits the received tag information, the temperature value and the pressure value to the data distribution and alarm device together with the thickness collected by the thickness measurement device for summarizing and storing, and when any data of the temperature value, the pressure value and the thickness of the brake shoe exceeds a set threshold value, the brake shoe automatic alarm device automatically alarms, and the application range and the accuracy of the brake shoe detection structure are improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of the real-time intelligent detection system for the brake shoe of the vehicle based on the RFID.
Fig. 2 is a schematic structural diagram of the reader provided by the present invention.
Fig. 3 is a schematic structural diagram of the electronic tag provided by the present invention.
Fig. 4 is a schematic structural diagram of the temperature measuring device provided by the present invention.
Fig. 5 is a schematic structural diagram of the thickness measuring device provided by the present invention.
Fig. 6 is a schematic structural diagram of the data distribution and alarm device provided by the present invention.
Fig. 7 is a side view of the intelligent brake shoe provided by the present invention.
1-radio frequency identification device, 2-reader, 3-electronic tag, 4-temperature measuring device, 5-pressure measuring device, 6-thickness measuring device, 7-data distributing and alarming device, 21-first transmitting and receiving antenna, 22-first demodulation circuit, 23-microprocessor, 24-first modulation circuit, 25-frequency generator, 26-phase-locked loop, 27-first memory, 28-first external interface, 31-second transmitting and receiving antenna, 32-conversion circuit, 33-second demodulation circuit, 34-logic control circuit, 35-second memory, 36-second modulation circuit, 37-second external interface, 41-temperature sensitive resistor, 42-operational amplifier circuit, 43-analog-digital conversion circuit, temperature-sensitive resistor, 61-high-definition camera, 62-image processor, 63-machine learning controller, 71-data memory and 72-alarm.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.
Referring to fig. 1, the present invention provides a real-time intelligent detection system for a vehicle brake shoe based on RFID, which comprises a radio frequency identification device 1, a reader 2, an electronic tag 3, a temperature measuring device 4, a pressure measuring device 5, a thickness measuring device 6 and a data distribution and alarm device 7, wherein the radio frequency identification device 1 is connected to the electronic tag 3, the reader 2 is connected to the electronic tag 3, both the temperature measuring device 4 and the pressure measuring device 5 are connected to the electronic tag 3, the thickness measuring device 6 is connected to the reader 2, the data distribution and alarm device 7 is connected to the reader 2,
the radio frequency identification device 1 is used for supplying power to the electronic tag 3 and reading and writing the electronic tag 3;
the reader 2 is used for sending signals to the electronic tag 3, receiving return signals of the electronic tag 3, and transmitting the return signals to the data distribution and alarm device 7 by combining the received signals of the thickness measuring device 6;
the electronic tag 3 is used for receiving a signal sent by the reader 2, transmitting required data to the reader 2, and receiving data sent by the temperature measuring device 4 and the pressure measuring device 5;
the temperature measuring device 4 is used for measuring the temperature value of the brake shoe in real time and transmitting the temperature value to the electronic tag 3;
the pressure measuring device 5 is used for measuring the pressure value borne by the brake shoe in real time and transmitting the pressure value to the electronic tag 3;
the thickness measuring device 6 is used for measuring the thickness of the brake shoe by using an image processing technology and transmitting the thickness to the reader 2;
and the data distribution and alarm device 7 is used for summarizing and storing the data transmitted by the reader 2 and automatically giving an alarm when any data of the temperature value, the pressure value and the thickness of the brake shoe exceeds a set threshold value.
In the embodiment, the real-time intelligent detection system for the vehicle brake shoe based on the RFID comprises a radio frequency identification device 1, a reader 2, an electronic tag 3, a temperature measuring device 4, a pressure measuring device 5, a thickness measuring device 6 and a data distributing and alarming device 7, wherein the radio frequency identification device 1 is connected with the electronic tag 3, the reader 2 is connected with the electronic tag 3, the temperature measuring device 4 and the pressure measuring device 5 are both connected with the electronic tag 3, the thickness measuring device 6 is connected with the reader 2, and the data distributing and alarming device 7 is connected with the reader 2, wherein the structure of the brake shoe is as shown in a side view of the intelligent brake shoe provided in FIG. 7, the electronic tag 3 is attached to a shoe support on the side of the brake shoe, the temperature measuring device 4 and the pressure measuring device 5 are attached to a shoe support on the side of the brake shoe, the reader 2 is located at a distance of 2-3 meters on two sides of a railway, after the electronic tag 3 receives a Radio Frequency signal sent by the reader 2, the Radio Frequency IDentification device 1 performs power supply and read-write operation on the electronic tag 3, wherein the Radio Frequency IDentification device 1(Radio Frequency IDentification, namely RFID, Radio Frequency IDentification technology) performs non-contact bidirectional data communication in a Radio Frequency mode, and reads and writes the electronic tag 3 in the Radio Frequency mode, so as to achieve the purpose of identifying a target and exchanging data, the Radio Frequency IDentification device 1 can use any one of active RFID, passive RFID and semi-active RFID, the pressure measurement device 5 can directly select an existing pressure sensor to measure the pressure on a brake shoe in real time, and the temperature measurement device 4 and the pressure measurement device 5 transmit the monitored real-time temperature value and pressure value to the electronic tag 3, and then the electronic tag 3 transmits the tag information, the temperature value and the pressure value back to the reader 2, wherein the tag information comprises a manufacturer, a production date, a loading date and the like, the reader 2 transmits the received tag information, the temperature value and the pressure value to the data distribution and alarm device 7 for summary storage in combination with the thickness of the brake shoe acquired by the thickness measurement device 6, and the specific position of the brake shoe to be replaced is distributed to a train maintenance point. And distributing the brake shoe (or train number) information with insufficient braking force or hidden danger to the train dispatching and the train and giving an alarm. Batches of brake shoe usage are analyzed and distributed to manufacturers for quality improvement. Analyzing and summarizing the real-time thickness of all brake shoes to provide a brake shoe purchasing and storing scheme. When any data of the temperature value, the pressure value and the thickness of the brake shoe exceeds a set threshold value, the automatic alarm is carried out, and the information of the corresponding brake shoe is distributed to relevant detectors, so that the brake shoe with hidden danger can be replaced in time, the thickness of each brake shoe does not need to be detected by a large amount of manpower, and manpower and material resources are greatly saved. The detection time can be shortened, the detection precision is improved, the brake shoe waste is reduced, and the train operation efficiency is improved. The real-time thickness, temperature and pressure data of the brake shoe of the vehicle in operation can be obtained, real-time data support is provided for vehicle running safety management, the safety of train running can be improved by the alarm system, and the accident probability is reduced. Data support is provided for improving the quality of the brake shoe and the management efficiency of the brake shoe; the management personnel can conveniently arrange the management personnel in an overall mode, and the management cost is reduced.
Further, the reader 2 includes a first transceiving antenna 21, a first demodulation circuit 22, a microprocessor 23, a first modulation circuit 24, a frequency generator 25 and a phase-locked loop 26, the first transceiving antenna 21 is connected to the first demodulation circuit 22, the first demodulation circuit 22 is connected to the microprocessor 23, the microprocessor 23 is connected to the first modulation circuit 24, the phase-locked loop 26 is connected to the first demodulation circuit 22 and the first modulation circuit 24, the frequency generator 25 is connected to the first demodulation circuit 22 and the first modulation circuit 24, the first modulation circuit 24 is further connected to the first transceiving antenna 21,
the first transceiving antenna 21 is configured to send a radio frequency signal to the electronic tag 3, and receive a response signal and tag information returned by the electronic tag 3;
the first demodulation circuit 22 is configured to demodulate a signal returned by the electronic tag 3, and transmit the signal to the microprocessor 23 to process data;
the microprocessor 23 is configured to generate a signal to be sent to the electronic tag 3, decode a signal returned by the electronic tag 3, and transmit data obtained by decoding back to the first modulation circuit;
the first modulation circuit 24 is configured to load a carrier wave with a signal transmitted to the electronic tag 3 and send the signal out by the first transceiving antenna 21;
the phase-locked loop 26 is used for generating a carrier signal required by modulation;
the frequency generator 25 is configured to generate an operating frequency of the reader 2.
In this embodiment, the reader 2 includes a first transceiving antenna 21, a first demodulating circuit 22, a microprocessor 23, a first modulating circuit 24, a frequency generator 25 and a phase-locked loop 26, the first transceiving antenna 21 is connected to the first demodulating circuit 22, the first demodulating circuit 22 is connected to the microprocessor 23, the microprocessor 23 is connected to the first modulating circuit 24, the phase-locked loop 26 is connected to the first demodulating circuit 22 and the first modulating circuit 24, the frequency generator 25 is connected to the first demodulating circuit 22 and the first modulating circuit 24, the first modulating circuit 24 is further connected to the first transceiving antenna 21, the structure of the reader 2 is as shown in the schematic structural diagram of fig. 2, a signal to be transmitted to the electronic tag 3 is generated by the microprocessor 23, the first modulating circuit 24 loads a carrier wave to the signal to be transmitted to the tag and transmits the signal by a radio frequency circuit, the frequency generator 25 is used to generate the working frequency required by the reader 2, the phase-locked loop 26 is used to generate the carrier signal required by the first modulation circuit 24, finally the first transceiving antenna 21 sends a radio frequency signal to the electronic tag 3, receives the response signal and tag information returned by the electronic tag 3, demodulates the information returned by the electronic tag 3 through the first demodulation circuit 22, transmits the information to the microprocessor 23 for decoding, and returns the decoded data to the first modulation circuit.
Furthermore, the reader 2 further comprises a first memory 27 and a first external interface 28, the first memory 27 is connected with the microprocessor 23, the first external interface 28 is connected with the first memory 27, and is also connected with the data distribution and alarm device 7 and the thickness measuring device 6,
the first memory 27 is used for storing a user program and brake shoe online information;
the first external interface 28 is configured to receive the data transmitted by the thickness measuring device 6 and transmit the data in the reader 2 to the data distribution and alarm device 7.
In this embodiment, the reader 2 further includes a first memory 27 and a first external interface 28, the first memory 27 is connected to the microprocessor 23, the first external interface 28 is connected to the first memory 27, and is further connected to the data distribution and alarm device 7 and the thickness measurement device 6, the structure of the reader 2 is as shown in the schematic structural diagram of the reader 2 provided in fig. 2, when the microprocessor 23 returns the decoded data to the first modulation circuit, the first memory 27 is used to store the user program and the brake shoe on-line information, and the thickness of the brake shoe measured by the thickness measurement device 6 in real time is received through the first external interface 28 and stored in the first memory 27.
Further, the electronic tag 3 includes a second transceiver antenna 31, a switching circuit 32, a second demodulation circuit 33, a logic control circuit 34, a second memory 35, and a second modulation circuit 36, the second transceiver antenna 31 is connected to the switching circuit 32, the second demodulation circuit 33 is connected to the switching circuit 32, the logic control circuit 34 is connected to the second memory 35 and the modulation circuit, the modulation circuit is connected to the switching circuit 32,
the second transceiving antenna 31 is configured to receive the radio frequency signal from the first transceiving antenna 21 and return a response signal and tag information;
the conversion circuit 32 is configured to output the received electromagnetic field energy through a voltage stabilizing circuit, and provide a stable power supply for the second demodulation circuit 33, the logic control circuit 34, and the second modulation circuit 36;
the second demodulation circuit 33 is configured to demodulate the received radio frequency signal;
the logic control circuit 34 is configured to decode the received radio frequency signal;
the second memory 35 is used for storing and updating the on-line information of the brake shoe;
the second modulation circuit 36 is configured to modulate a transmitted signal.
In this embodiment, the electronic tag 3 includes a second transceiver antenna 31, a converter circuit 32, a second demodulator circuit 33, a logic control circuit 34, a second memory 35, and a second modulator circuit 36, the second transceiver antenna 31 is connected to the converter circuit 32, the second demodulator circuit 33 is connected to the converter circuit 32, the logic control circuit 34 is connected to the second memory 35 and the modulator circuit, and the modulator circuit is connected to the converter circuit 32, and the configuration of the electronic tag is as shown in the schematic structural diagram of the electronic tag 3 provided in fig. 3, the second transceiver antenna 31 is used to receive the radio frequency signal transmitted by the first transceiver antenna 21, and then the converter circuit 32 outputs electromagnetic field energy generated by the received radio frequency signal to the second demodulator circuit 33 and the logic control circuit 34 through a voltage regulator circuit, The second memory 35 and the second modulation circuit 36 provide stable power supply, the received signals are demodulated, modulated and decoded by the second demodulation circuit 33, the second modulation circuit 36 and the logic control circuit 34, so that the signals reach the requirements of the second memory 35 and the reader 2, the on-line information of the brake shoe is stored and updated through the second memory 35, and then the information stored in the second memory 35 is transmitted back to the reader 2 through the second transceiving antenna 31.
Further, the electronic tag 3 further comprises a second external interface 37, the second external interface 37 is connected with the temperature measuring device 4 and the pressure measuring device 5,
the second external interface 37 is configured to receive the temperature value and the pressure value of the brake shoe in real time.
In this embodiment, the electronic tag 3 further includes a second external interface 37, the second external interface 37 is connected to the temperature measuring device 4 and the pressure measuring device 5, and the electronic tag 3 is connected to the temperature measuring device 4 and the pressure measuring device 5 through the second external interface 37, so that the temperature value and the pressure value of the brake shoe measured by the temperature measuring device 4 and the pressure measuring device 5 in real time can be stored.
Further, the temperature measuring device 4 includes a temperature sensitive resistor 41, an operational amplifier circuit 42 and an analog-to-digital conversion circuit 43, the temperature sensitive resistor 41 is connected to the operational amplifier circuit 42, the operational amplifier circuit 42 is connected to the analog-to-digital conversion circuit 43, the analog-to-digital conversion circuit 43 is connected to the second external interface 37,
the temperature sensitive resistor 41 is used for changing a resistance value according to the temperature of the brake shoe so as to change a circuit signal in the temperature measuring device 4;
the operational amplifier circuit 42 is configured to amplify a setting signal in the circuit signal;
the analog-to-digital conversion circuit 43 is configured to convert the circuit signal into a digital signal, and transmit the digital signal to the second external interface 37.
In the present embodiment, the temperature measuring device 4 includes a temperature sensitive resistor 41, an operational amplifier circuit 42, and an analog-to-digital conversion circuit 43, the temperature sensitive resistor 41 is connected to the operational amplifier circuit 42, the operational amplifier circuit 42 is connected to the analog-to-digital conversion circuit 43, and the analog-to-digital conversion circuit 43 is connected to the second external interface 37, and the configuration thereof is as shown in the schematic structural diagram of the temperature measuring device 4 provided in fig. 4. The temperature-sensitive resistor 41 is used for monitoring the temperature change of the brake shoe in real time, so that the resistance value of the temperature-sensitive resistor 41 is changed, the electric signal in the temperature measuring device 4 is changed, an operational amplifier circuit 42 is additionally arranged, the small signal caused by the temperature-sensitive resistor 41 can be amplified, the accuracy of the measured resistance value is ensured, and finally, the electric signal is converted into a digital signal through the analog-to-digital conversion circuit 43 and then is transmitted to the electronic tag 3 through the second external interface 37.
Further, the thickness measuring device 6 comprises a high-definition camera 61 and an image processor 62, the high-definition camera 61 is connected with the image processor 62, the image processor 62 is connected with the first external interface 28,
the high-definition camera 61 is used for photographing the brake shoe and transmitting the obtained image to the image processor 62;
the image processor 62 is configured to perform filtering and gray-scale processing on the image, and transmit the image to the first external interface 28.
In the present embodiment, the thickness measuring device 6 includes a high-definition camera 61 and an image processor 62, the high-definition camera 61 is connected to the image processor 62, the image processor 62 is connected to the first external interface 28, and the structure thereof is as shown in the schematic structural diagram of the thickness measuring device 6 provided in fig. 5. Firstly, the high-definition camera 61 is used for shooting the brake shoe, then the image processor 62 is used for filtering the shot prominence, a series of information irrelevant to the thickness of the brake shoe is eliminated, the edge point intensity of the image is enhanced through an enhancement algorithm, and then the outline of the image is determined according to the change of the gray scale of the image, so that the width of the brake shoe is measured. To ensure the accuracy of the measured data.
Further, the thickness measuring device 6 further comprises a machine learning controller 63, the machine learning controller 63 is connected with the high-definition camera 61,
and the machine learning controller 63 is used for controlling the high-definition camera 61 to take pictures of the brake shoe for multiple times.
In this embodiment, the thickness measuring device 6 further includes a machine learning controller 63, the machine learning controller 63 is connected to the high definition camera 61, the machine learning controller 63 is added, the same brake shoe is photographed for multiple times, and the accuracy of the measured thickness is increased.
Further, the data distribution and alarm device 7 comprises a data storage 71 and an alarm 72, the data storage 71 is connected with the first external interface 28, the alarm 72 is connected with the data storage 71,
the data memory 71 is configured to receive the data transmitted by the first external interface 28, and perform summary storage;
and the alarm 72 is used for analyzing and comparing the data in the data storage 71 with a set threshold value, and automatically sending an alarm signal to give an alarm when the data is smaller than the set threshold value.
In the present embodiment, the data distribution and alarm device 7 includes a data memory 71 and an alarm device 72, the data memory 71 is connected to the first external interface 28, and the alarm device 72 is connected to the data memory 71, and the configuration thereof is as shown in the schematic configuration diagram of the data distribution and alarm device 7 provided in fig. 6. After receiving the data from the reader 2 by using the data storage 71, the data is summarized, stored, analyzed and processed. The specific locations of brake shoes to be replaced are distributed to train service points, and batches of brake shoes are analyzed and distributed to manufacturers for improved quality. Analyzing and summarizing the real-time thicknesses of all brake shoes to put forward a brake shoe purchasing and storing scheme, analyzing and comparing the data in the data storage 71 with a set threshold by using the alarm 72, and automatically sending an alarm signal to give an alarm when the data is smaller than the set threshold, wherein the method specifically comprises the following steps: distributing the information of the corresponding brake shoe to each relevant detector so as to replace the brake shoe with hidden danger in time; distributing brake shoe (or train number) information with insufficient brake force or hidden danger to a train dispatching and a train and giving an alarm; when the reader 2 does not detect a sufficient preset number of electronic tags 3, it is considered that the electronic tags 3 are damaged or lost, and a type of alarm is issued. When the abrasion of the brake shoe reaches the replacement line, a second type of alarm is sent out; and when the brake shoe wear reaches the accident warning line or the thickness information can not be obtained by analyzing and processing the image, three types of alarms are given.
The utility model discloses a real-time intelligent detection system of vehicle brake shoe based on RFID, the real-time intelligent detection system of vehicle brake shoe based on RFID includes radio frequency identification device 1, reader 2, electronic tags 3, temperature measuring device 4, pressure measuring device 5, thickness measuring device 6 and data distribution and alarm device 7, radio frequency identification device 1 is connected with electronic tags 3, reader 2 is connected with electronic tags 3, temperature measuring device 4 and pressure measuring device 5 are both connected with electronic tags 3, thickness measuring device 6 is connected with reader 2, data distribution and alarm device 7 is connected with reader 2, after radio frequency signal that reader 2 sent is received to electronic tags 3, radio frequency identification device 1 supplies power and read-write operation to electronic tags 3, meanwhile, the temperature measuring device 4 and the pressure measuring device 5 transmit the monitored real-time temperature value and pressure value to the electronic tag 3, then the electronic tag 3 transmits the tag information, the temperature value and the pressure value back to the reader 2, the reader 2 transmits the received tag information, the received temperature value and the received pressure value to the data distribution and alarm device 7 together with the thickness collected by the thickness measuring device 6 for summary storage, and when any data of the temperature value, the pressure value and the thickness of the brake shoe exceeds a set threshold value, an automatic alarm is given, and the use range and the accuracy of the brake shoe detection structure are improved.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.
Claims (9)
1. The real-time intelligent detection system for the vehicle brake shoe based on the RFID is characterized by comprising a radio frequency identification device, a reader, an electronic tag, a temperature measuring device, a pressure measuring device, a thickness measuring device and a data distribution and alarm device, wherein the radio frequency identification device is connected with the electronic tag, the reader is connected with the electronic tag, the temperature measuring device and the pressure measuring device are both connected with the electronic tag, the thickness measuring device is connected with the reader, and the data distribution and alarm device is connected with the reader,
the radio frequency identification device is used for supplying power to the electronic tag and reading and writing the electronic tag;
the reader is used for sending a radio frequency signal to the electronic tag, receiving a return signal of the electronic tag, and transmitting the return signal to the data distribution and alarm device in combination with the received signal of the thickness measuring device;
the electronic tag is used for receiving a signal sent by the reader, transmitting required data to the reader and simultaneously receiving data sent by the temperature measuring device and the pressure measuring device;
the temperature measuring device is used for measuring the temperature value of the brake shoe in real time and transmitting the temperature value to the electronic tag;
the pressure measuring device is used for measuring the pressure value borne by the brake shoe in real time and transmitting the pressure value to the electronic tag;
the thickness measuring device is used for measuring the thickness of the brake shoe by using an image processing technology and transmitting the thickness to the reader;
and the data distribution and alarm device is used for summarizing and storing the data transmitted by the reader and automatically giving an alarm when any data of the temperature value, the pressure value and the thickness of the brake shoe exceeds a set threshold value.
2. The RFID-based real-time intelligent vehicle brake shoe detection system of claim 1, wherein the reader comprises a first transceiver antenna, a first demodulation circuit, a microprocessor, a first modulation circuit, a frequency generator, and a phase-locked loop, the first transceiver antenna is connected to the first demodulation circuit, the first demodulation circuit is connected to the microprocessor, the microprocessor is connected to the first modulation circuit, the phase-locked loop is connected to the first demodulation circuit and the first modulation circuit, the frequency generator is connected to the first demodulation circuit and the first modulation circuit, the first modulation circuit is further connected to the first transceiver antenna,
the first transceiving antenna is used for sending a radio frequency signal to the electronic tag and receiving a response signal and tag information returned by the electronic tag;
the first demodulation circuit is used for demodulating a signal returned by the electronic tag and transmitting the signal to the microprocessor for processing data;
the microprocessor is used for generating a signal to be sent to the electronic tag, decoding the signal returned by the electronic tag and returning data obtained by decoding to the first modulation circuit;
the first modulation circuit is used for loading a signal sent to the electronic tag to a carrier wave and sending the signal out by the first transceiving antenna;
the phase-locked loop is used for generating a carrier signal required by modulation;
the frequency generator is used for generating the working frequency of the reader.
3. The RFID-based real-time intelligent vehicle brake shoe detection system of claim 2, wherein said reader further comprises a first memory and a first external interface, said first memory being connected to said microprocessor, said first external interface being connected to said first memory and further connected to said data distribution and alarm device and said thickness measurement device,
the first memory is used for storing a user program and brake shoe online information;
the first external interface is used for receiving the data transmitted by the thickness measuring device and transmitting the data in the reader to the data distribution and alarm device.
4. The RFID-based real-time intelligent vehicle brake shoe detection system of claim 3, wherein said electronic tag comprises a second transceiver antenna, a switching circuit, a second demodulation circuit, a logic control circuit, a second memory and a second modulation circuit, said second transceiver antenna is connected to said switching circuit, said second demodulation circuit is connected to said switching circuit, said logic control circuit is connected to said second memory and said modulation circuit, said modulation circuit is connected to said switching circuit,
the second transceiving antenna is used for receiving the radio frequency signal from the first transceiving antenna and returning a response signal and label information;
the conversion circuit is used for outputting the received electromagnetic field energy through a voltage stabilizing circuit and providing a stable power supply for the second demodulation circuit, the logic control circuit and the second modulation circuit;
the second demodulation circuit is configured to demodulate the received radio frequency signal;
the logic control circuit is used for decoding the received radio frequency signal;
the second memory is used for storing and updating the on-line information of the brake shoe;
the second modulation circuit is used for modulating the transmitted signal.
5. The RFID-based real-time intelligent vehicle brake shoe detection system of claim 4, wherein said electronic tag further comprises a second external interface, said second external interface being connected to said temperature measuring device and said pressure measuring device,
and the second external interface is used for receiving the temperature value and the pressure value of the brake shoe in real time.
6. The RFID-based real-time intelligent detection system for vehicle brake shoes according to claim 5, wherein the temperature measuring device comprises a temperature sensitive resistor, an operational amplifier circuit and an analog-to-digital conversion circuit, the temperature sensitive resistor is connected with the operational amplifier circuit, the operational amplifier circuit is connected with the analog-to-digital conversion circuit, the analog-to-digital conversion circuit is connected with the second external interface,
the temperature-sensitive resistor is used for changing a resistance value according to the temperature of the brake shoe so as to change a circuit signal in the temperature measuring device;
the operational amplifier circuit is used for amplifying a setting signal in the circuit signal;
and the analog-to-digital conversion circuit is used for converting the circuit signal into a digital signal and transmitting the digital signal to the second external interface.
7. The RFID-based real-time intelligent vehicle brake shoe detection system of claim 3, wherein the thickness measuring device comprises a high-definition camera and an image processor, the high-definition camera is connected with the image processor, the image processor is connected with the first external interface,
the high-definition camera is used for photographing the brake shoe and transmitting the obtained image to the image processor;
and the image processor is used for transmitting the image to the first external interface after filtering and gray scale processing.
8. The RFID-based real-time intelligent detection system for vehicle brake shoes according to claim 7, wherein the thickness measuring device further comprises a machine learning controller, the machine learning controller is connected with the high-definition camera,
and the machine learning controller is used for controlling the high-definition camera to photograph the brake shoe for multiple times.
9. The RFID-based real-time intelligent detection system for vehicle brake shoes according to claim 3, wherein the data distribution and alarm device comprises a data storage and an alarm, the data storage is connected with the first external interface, the alarm is connected with the data storage,
the data memory is used for receiving the data transmitted by the first external interface and performing summary storage;
and the alarm is used for analyzing and comparing the data in the data storage with a set threshold value and automatically sending an alarm signal to give an alarm when the data is smaller than the set threshold value.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020528516.4U CN212055618U (en) | 2020-04-10 | 2020-04-10 | Real-time intelligent detection system for vehicle brake shoe based on RFID |
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| CN202020528516.4U CN212055618U (en) | 2020-04-10 | 2020-04-10 | Real-time intelligent detection system for vehicle brake shoe based on RFID |
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