Transponder detection device calibration system, method and apparatus

Abstract

The present application relates to the field of transportation, and particularly relates to a transponder detection device calibration system, method and device. The system comprises: a calibration host configured to generate a calibration signal according to a preset calibration instruction; a calibration antenna configured to send the calibration signal to a vehicle-mounted signal transmission device, wherein the vehicle-mounted signal transmission device outputs a corresponding signal according to the calibration signal; and a processing device in communication with the calibration host and the vehicle-mounted signal transmission device, and configured to calibrate a transponder detection device according to an error between the calibration signal and the signal output by the vehicle-mounted signal transmission device. The method can reduce the detection error of a current transponder dynamic detection device, improve the detection accuracy, and improve the detection performance of the transponder detection device.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of transportation, and can be used in the field of high-speed railway, in particular to a balise detection device calibration system, method, device, computer device and storage medium. BACKGROUND

[0002] With the development of railway track maintenance technology, the signal dynamic detection system based on the platform of high-speed comprehensive detection train can realize the state detection of balise, track circuit, compensation capacitor, traction return current and other signal trackside equipment under the dynamic operation condition of the train. Among them, the balise detection device is the core subsystem of the signal dynamic detection system of the high-speed comprehensive detection train.

[0003] The balise dynamic detection device transmits energy signals to the ground by using the balise transmission unit, and the ground balise receives the energy signals and is activated to send radio frequency signals modulated by message information to the outside. The system receives the signals through the balise signal receiving antenna, and the signals enter the balise detection processor through the cable, are amplified by the resonant amplifier to form balise signals with a certain amplitude, and finally obtain balise message information through the signal processing circuit.

[0004] The balise dynamic detection device in the prior art is a static test device, mainly used in the laboratory or installed in the pit of the motor vehicle garage, and needs to be held by the maintenance personnel for testing. The low precision and incomplete function cannot meet the needs of the calibration of the balise dynamic detection device of the comprehensive detection train. The balise dynamic detection device in the prior art is affected by the measurement principle, design and manufacture, aging of components and changes in external environment. There is a certain difference between the output result of the balise dynamic detection device and the true value of the measured variable, which affects the credibility of the detection data.

[0005] In view of the problems of large detection error and low precision of the balise dynamic detection device, a balise detection device calibration system and method are needed. SUMMARY

[0006] To solve the above problems of the prior art, the embodiments of the present application provide a balise detection device calibration system, method, device, computer device and storage medium.

[0007] The embodiments of the present application provide a balise detection device calibration system, which comprises a calibration host configured to generate a calibration signal according to a preset calibration instruction; a calibration antenna configured to send the calibration signal to a vehicle-mounted signal transmission device, the vehicle-mounted signal transmission device being configured to output a corresponding signal according to the calibration signal; and a processing device in communication with the calibration host and the vehicle-mounted signal transmission device, and configured to calibrate the balise detection device according to the error between the calibration signal and the signal output by the vehicle-mounted signal transmission device.

[0008] According to an aspect of the embodiments herein, the preset calibration instruction is configured to set a parameter of the calibration signal, and the preset calibration instruction comprises: a calibration signal amplitude, a calibration signal frequency, a calibration signal baud rate and a calibration signal envelope.

[0009] According to an aspect of the embodiments herein, the calibration host comprises: a main control board, a digital frequency modulation board and an interface board; the main control board is in communication with the digital frequency modulation board, configured to receive the preset calibration instruction and send the preset calibration instruction to the digital frequency modulation board; the digital frequency modulation board is configured to generate a calibration signal according to the received preset calibration instruction; the interface board is in communication with the vehicle-mounted signal transmission device, configured to acquire a state of the vehicle-mounted signal transmission device; and the main control board is configured to determine whether to send the calibration signal to the vehicle-mounted signal transmission device according to the state of the vehicle-mounted signal transmission device.

[0010] The embodiments herein also provide a transponder detection device calibration system, which comprises: a calibration antenna configured to receive an excitation signal provided by a vehicle-mounted signal transmission device and send the excitation signal to a calibration host, the excitation signal provided by the vehicle-mounted signal transmission device being a first excitation signal; the calibration host configured to receive and extract the first excitation signal to obtain a second excitation signal; and a processing device configured to calibrate a transponder detection device according to an error between the first excitation signal and the second excitation signal.

[0011] According to an aspect of the embodiments herein, the calibration host comprises: a main control board, a signal acquisition board and an interface board; the signal acquisition board is configured to receive the excitation signal and process the excitation signal, including: modulation amplification, analog-to-digital conversion and signal extraction; the interface board is configured to communicate with the vehicle-mounted signal transmission device and acquire a state of the vehicle-mounted signal transmission device; and the main control board is configured to determine whether to send the calibration signal to the vehicle-mounted signal transmission device according to the state of the vehicle-mounted signal transmission device.

[0012] The embodiments herein also provide a transponder detection device calibration method, which comprises: generating a calibration signal according to a preset calibration instruction; sending the calibration signal to a vehicle-mounted signal transmission device; acquiring a corresponding signal output by the vehicle-mounted signal transmission device according to the calibration signal; and calibrating a transponder detection device according to an error between the calibration signal and the corresponding signal output.

[0013] According to one aspect of the embodiments herein, calibrating the transponder detection device based on the error between the calibration signal and the corresponding signal output comprises: when the error does not exceed a pre-set threshold, determining a correction coefficient of the transponder detection device based on the error and calibrating the transponder detection device using the correction coefficient; and when the error exceeds the pre-set threshold, determining that the transponder detection device is unqualified.

[0014] The embodiments herein further provide a method for calibrating a transponder detection device, the method comprising: receiving an excitation signal provided by a vehicle-mounted signal transmission device and sending the excitation signal to a calibration host, the excitation signal provided by the vehicle-mounted signal transmission device being a first excitation signal; receiving and extracting the first excitation signal to obtain a second excitation signal; and calibrating the transponder detection device based on an error between the first excitation signal and the second excitation signal.

[0015] The embodiments herein further provide a device for calibrating a transponder detection device, the device comprising: a calibration signal generation unit configured to generate a calibration signal according to a pre-set calibration instruction; a calibration signal sending unit configured to send the calibration signal to a vehicle-mounted signal transmission device; an output signal obtaining unit configured to obtain a corresponding signal output by the vehicle-mounted signal transmission device based on the calibration signal; and a calibration module configured to calibrate the transponder detection device based on an error between the calibration signal and the corresponding signal output.

[0016] The embodiments herein further provide a device for calibrating a transponder detection device, the device comprising: a first excitation signal obtaining unit configured to receive an excitation signal provided by a vehicle-mounted signal transmission device and send the excitation signal to a calibration host, the excitation signal provided by the vehicle-mounted signal transmission device being a first excitation signal; a second excitation signal obtaining unit configured to receive and extract the first excitation signal to obtain a second excitation signal; and a calibration unit configured to calibrate the transponder detection device based on an error between the first excitation signal and the second excitation signal.

[0017] The embodiments herein further provide a computer device, comprising a memory, a processor, and a computer program stored in the memory and capable of running on the processor, wherein the processor implements the above-mentioned method when executing the computer program.

[0018] The embodiments herein further provide a computer readable storage medium having computer instructions stored thereon, wherein the computer instructions are executed by a processor to implement the above-mentioned method.

[0019] The present solution can reduce the detection error of the transponder dynamic detection device, improve the detection precision, and improve the detection performance of the transponder detection device. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments or the prior art, the accompanying drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, the accompanying drawings in the following description only constitute some embodiments of the present disclosure, and for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 Fig. 1 shows a schematic diagram of a transponder detection device calibration system according to an embodiment of the present disclosure;

[0022] Figure 2 Fig. 2 shows a schematic diagram of a calibration host according to an embodiment of the present disclosure;

[0023] Figure 3 Fig. 3 shows a schematic diagram of a transponder detection device calibration system according to an embodiment of the present disclosure;

[0024] Figure 4 Fig. 4 shows a schematic diagram of a calibration host in a transponder detection device according to an embodiment of the present disclosure;

[0025] Figure 5 Fig. 5 shows a flowchart of a transponder detection device calibration method according to an embodiment of the present disclosure;

[0026] Figure 6 Fig. 6 shows a flowchart of a method of calibrating a transponder detection device according to an embodiment of the present disclosure;

[0027] Figure 7 Fig. 7 shows a flowchart of a transponder detection device calibration method according to an embodiment of the present disclosure;

[0028] Figure 8 Fig. 8 shows a schematic diagram of a transponder detection device calibration apparatus according to an embodiment of the present disclosure;

[0029] Figure 9 Fig. 9 shows a schematic diagram of another transponder detection device calibration apparatus according to an embodiment of the present disclosure;

[0030] Figure 10 Fig. 10 shows a schematic diagram of a calibration host of a transponder detection device according to an embodiment of the present disclosure;

[0031] Figure 11 Fig. 11 shows a schematic diagram of a computer device according to an embodiment of the present disclosure.

[0032] List of Symbols:

[0033] 101, calibration host;

[0034] 102, calibration antenna;

[0035] 201, main control board;

[0036] 202, digital frequency modulation board;

[0037] 203, interface board;

[0038] 301, calibration antenna;

[0039] 302, calibration host;

[0040] 401, master control board;

[0041] 402, signal acquisition board;

[0042] 403, interface board;

[0043] 801, calibration signal generation unit;

[0044] 802, calibration signal sending unit;

[0045] 803, output signal acquisition unit;

[0046] 804, transponder detection device calibration unit;

[0047] 901, first excitation signal acquisition unit;

[0048] 902, second excitation signal acquisition unit;

[0049] 903, transponder detection device calibration unit;

[0050] 1102, computer device;

[0051] 1104, processor;

[0052] 1106, memory;

[0053] 1108, drive mechanism;

[0054] 1110, input / output module;

[0055] 1112, input device;

[0056] 1114, output device;

[0057] 1116, presentation device;

[0058] 1118, graphical user interface;

[0059] 1120, network interface;

[0060] 1122, communication link;

[0061] 1124, communication bus. DETAILED DESCRIPTION

[0062] In order to make the technical solutions in the specification better understood by the person skilled in the art, the technical solutions in the specification will be clearly and completely described below in combination with the drawings in the embodiments. Obviously, the described embodiments are only some of the embodiments in the specification, but not all the embodiments. Based on the embodiments in the specification, all other embodiments obtained by the person skilled in the art without creative labor fall within the scope of protection.

[0063] It should be noted that the terms "first", "second", and the like in the specification and claims of the specification and the above drawings are used to distinguish similar objects, and do not necessarily indicate a specific order or a chronological sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the specification described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, device, product or equipment including a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to the process, method, product or equipment.

[0064] The specification provides method operation steps as described in the embodiments or flowcharts, but can include more or fewer operation steps based on routine or non-creative labor. The order of steps listed in the embodiments is only one of the many execution orders of the steps, and does not represent the only execution order. In actual system or device product execution, the method order shown in the embodiments or drawings can be executed in sequence or in parallel.

[0065] It should be noted that the transponder detection device calibration system and method in the specification can be used in the field of rail transportation, and can also be used in fields other than the field of rail transportation (for example, the field of rail transportation equipment maintenance), and the application field of the transponder detection device calibration system, method and device in the specification is not limited.

[0066] The transponder detection device is used to detect whether the transponder and the comprehensive detection train function in the rail test line are complete, and whether the transmission and reception of the uplink signal and the downlink signal is normal. The transponder detection device calibration system in the specification is used to calibrate the detection accuracy of the transponder detection device, so as to better detect the function of the transponder and the comprehensive detection train.

[0067] As Figure 1Fig. 1 shows a schematic diagram of a responder detection device calibration system according to an embodiment of the present disclosure. In some embodiments of the present disclosure, the responder detection device calibration system comprises a calibration host 101, a calibration antenna 102, and a processing device. The calibration host 101 is configured to generate a calibration signal according to a preset calibration instruction; the calibration antenna 102 is configured to transmit the calibration signal to a vehicle-mounted signal transmission device, which outputs a corresponding signal according to the calibration signal; and the processing device is in communication with the calibration host 101 and the vehicle-mounted signal transmission device, and is configured to calibrate a responder detection device according to an error between the calibration signal and the signal output by the vehicle-mounted signal transmission device.

[0068] In some embodiments of the present disclosure, the calibration antenna 102 and the calibration host 101 are installed on a calibration test track, and are connected by a data cable. During the running of a comprehensive detection train on the calibration test track, a fixed frequency power carrier is transmitted downward to activate the calibration host 101 on the test track. After the calibration host 101 is activated, the message data stored in the beacon is transmitted in a FSK modulation manner to the comprehensive detection train through the calibration antenna 102 until the activation energy in the calibration antenna 102 disappears.

[0069] In some embodiments of the present disclosure, the calibration host 101 is installed in a mounting groove in the center of the roadbed of the test track (i.e., in a waterproof box below the antenna). The calibration antenna 102 can be installed below the roadbed surface. In some other embodiments of the present disclosure, the calibration antenna 102 can be installed to protrude from the roadbed surface, and the calibration antenna 102 and the calibration host 101 are connected by a data cable. Further, the waterproof boxes of the calibration antenna 102 and the calibration host 101 and the protection level of the connecting cable are IP66.

[0070] In some embodiments of the present disclosure, the processing device is arranged in a laboratory, and the calibration host 101 is connected to a power supply in the laboratory by a power cable. The processing device can communicate with the calibration host 101 on the outdoor track test track through a data cable. The processing device generates and sends a preset calibration instruction, and the calibration host 101 generates a corresponding calibration signal according to the preset calibration instruction. The calibration antenna 102 is configured to transmit the calibration signal generated by the calibration host 101 to the vehicle-mounted signal transmission device, and the vehicle-mounted signal transmission device outputs a corresponding signal according to the calibration signal.

[0071] In some embodiments of the present disclosure, a balise transmission module (BTM) in the vehicle-mounted signal transmission device is connected to and communicates with the processing device through a data cable, the vehicle-mounted signal transmission device outputs a corresponding signal according to the calibration signal, and transmits the signal to the processing device for subsequent processing.

[0072] The processing device communicates with the calibration host and the vehicle-mounted signal transmission device, and calibrates the transponder detection device according to the error between the calibration signal and the signal output by the vehicle-mounted signal transmission device.

[0073] In some embodiments of the present specification, the preset calibration instruction is used to set the parameters of the calibration signal, including: calibration signal amplitude, calibration signal frequency, calibration signal baud rate, calibration signal envelope and other key technical parameters. The preset calibration instruction also sets the transmission range, transmission accuracy and step size of multiple key technical parameters. For example, the transmission range of the calibration signal envelope is set as: I u1 ~I u4 The transmission accuracy is 0.2db, and the step size is 0.2db. The preset calibration instruction can be seen in Table 1.

[0074] Table 1 Key technical parameters of calibration signal

[0075]

[0076] In some embodiments of the present specification, the key technical parameters included in the preset calibration instruction can be adjusted within the set transmission range according to the set step size, so the key technical parameters in the preset calibration instruction are adjustable.

[0077] As Figure 2 The structure of the calibration host is shown in the structure diagram of the calibration host. The calibration host includes a main control board 201, a digital frequency modulation board 202, and an interface board 203.

[0078] The main control board 201 communicates with the processing device through the CAN bus or the UART port, and is used to receive the preset calibration instruction generated by the processing device. The main control board 201 communicates with the digital frequency modulation board 202, and sends the preset calibration instruction to the digital frequency modulation board 202 for processing. For example, the preset calibration instruction is: the calibration center frequency is 4.516MHz (the transmission accuracy is 1kHz), and the calibration data rate is 564.48kbit / s (the transmission accuracy is 10kbits / s). The digital frequency modulation board 202 is used to generate a calibration signal according to the received preset calibration instruction. Then the generated calibration signal is consistent with the preset calibration instruction. The center frequency of the generated signal is 4.516MHz (the transmission accuracy is 1kHz), and the data rate is 564.48kbit / s (the transmission accuracy is 10kbits / s).

[0079] In some embodiments of this specification, the interface board 203 communicates with the on-board signal transmission device to obtain the status of the on-board signal transmission device. Specifically, the interface board 203 is connected to the BTM host in the on-board signal transmission device via a CAN bus or UART port. The interface board 203 obtains the status of the on-board signal transmission device from the V interface of the BTM host in the on-board signal transmission device. Under normal circumstances, the BTM host is used to receive messages sent by the calibration host at the trackside, extract and decode the message signals uploaded by the calibration host, and send the messages to the on-board ATP host to realize the update of movement authorization and the correction of train position in point mode.

[0080] In some embodiments of this specification, the interface board 203 sends the acquired status signal of the BTM host in the vehicle signal transmission device to the processing device, thereby enabling the processing device to acquire the status information of the BTM in the vehicle signal transmission device. For example, the distance between the vehicle signal transmission device and the calibration host, and whether the vehicle signal transmission device is sending / receiving signals. The main control board 201 determines whether to send a calibration signal to the vehicle signal transmission device based on its status.

[0081] In some embodiments of this specification, the calibration host also includes a power supply board. A 220V AC power supply is input to the power supply board, which can output a low-voltage power supply of 12V or 5V to power the calibration host 101.

[0082] In some embodiments of this specification, the main control board 201 and the interface board 203 can be combined, while retaining the original Ethernet and UART interfaces. The main processing chip for each board can be an embedded chip, DSP, or FPGA, depending on the different functions of the board.

[0083] like Figure 3 The diagram shows a calibration system for a transponder detection device according to an embodiment of this paper. The system includes a calibration antenna 301, a calibration host 302, and a processing device. The calibration antenna 301 receives an excitation signal provided by a vehicle-mounted signal transmission device and transmits the excitation signal to the calibration host. The excitation signal provided by the vehicle-mounted signal transmission device is a first excitation signal. The calibration host 302 receives and extracts the first excitation signal to obtain a second excitation signal. The processing device calibrates the transponder detection device based on the error between the first excitation signal and the second excitation signal.

[0084] In some embodiments of the present specification, the calibration antenna 301 is configured to receive an excitation signal provided by a vehicle-mounted signal transmission device and transmit the excitation signal to the calibration host 302, wherein the excitation signal provided by the vehicle-mounted signal transmission device is a first excitation signal. In some embodiments of the present specification, the excitation signal provided by the vehicle-mounted signal transmission device is a 27.095 MHz downlink signal, and the excitation signal is a first excitation signal. The frequency of the first excitation signal is 27.095 MHz.

[0085] The calibration host 302 is configured to receive and extract the first excitation signal to obtain a second excitation signal. After receiving the first excitation signal, the calibration host 302 modulates the first excitation signal, performs analog-digital conversion, and analyzes the signal. The modulated and digitized signal is a second excitation signal. The calibration host transmits the signal frequency, signal power and other key parameters in the second excitation signal to the processing device.

[0086] The processing device is configured to calibrate the transponder detection device according to the error between the first excitation signal and the second excitation signal. In some embodiments of the present specification, the error between the first excitation signal and the second excitation signal is the shift of the signal frequency, signal energy and other key parameters in the first excitation signal and the second excitation signal. In some embodiments of the present specification, the key technical parameters in the first excitation signal and the second excitation signal are shown in Table 2.

[0087] Table 2 Key technical parameters of excitation signal

[0088]

[0089] For example, the frequency of the first excitation signal is 27.095 MHz, and the frequency of the second excitation signal is 26.524 MHz, so there is an error in the signal frequency between the first excitation signal and the second excitation signal.

[0090] As shown in Figure 4 The calibration host in the transponder detection device according to an embodiment of the present specification is shown in FIG. 4, which includes a main control board 401, a signal acquisition board 402, and an interface board 403.

[0091] The signal acquisition board 402 is configured to receive the excitation signal generated by the vehicle-mounted signal generation device and process the excitation signal, including modulation, amplification, analog-digital conversion, signal extraction, etc. The signal acquisition board 402 is configured to communicate with the vehicle-mounted signal transmission device to obtain the state of the vehicle-mounted signal transmission device. The main control board 401 is configured to determine whether to transmit the calibration signal to the vehicle-mounted signal transmission device according to the state of the vehicle-mounted signal transmission device.

[0092] Specifically, the signal acquisition board 402 adopts a direct sampling method of software radio, and the core components of the signal acquisition board include a field programmable gate array (FGPA) and an ADC. The signal acquisition board 402 and the main control board 401 are connected in communication through a CAN bus. After the vehicle-mounted signal generating device sends a first excitation signal, the signal is filtered by a signal filtering and conditioning circuit in the programmable logic array in the signal acquisition board 402 in the calibration host, and then the filtered analog signal is processed into a digital signal by an ADC module. The signal is transmitted to a processing device, and key parameters of the signal are calculated and analyzed.

[0093] In some embodiments of the present specification, the signal acquisition board 402 receives signals by high-precision direct sampling, and measures and analyzes the electrical characteristics of the 27.053MHz radio frequency energy signal emitted by the vehicle-mounted signal transmission device BTM through a signal processing algorithm.

[0094] In some embodiments of the present specification, the calibration host further includes a power board. The power board can output a low-voltage power supply voltage of 12 volts or 5 volts to power the calibration host 101 after inputting 220-volt alternating current to the power board.

[0095] In some embodiments of the present specification, the main control board 401 and the interface board 403 can be combined, and the original Ethernet and UART interfaces are retained. The main processing chips of each board block adopt embedded chips, DSPs or FGPA according to the different functions of the board blocks.

[0096] In some embodiments of the present specification, the main control board, the interface board, the signal acquisition board, the digital frequency modulation board and the power board can also be installed uniformly on the calibration host, as shown in Figure 10 FIG. 1 shows a schematic diagram of a calibration host of a transponder detection device according to an embodiment of the present application. The present application does not limit the installation and connection mode of each board block in the calibration host.

[0097] FIG. 1 shows a schematic diagram of a calibration host of a transponder detection device according to an embodiment of the present application. The present application does not limit the installation and connection mode of each board block in the calibration host. Figure 5 FIG. 2 shows a flowchart of a calibration method of a transponder detection device according to an embodiment of the present application. Specifically, the method comprises the following steps:

[0098] Step 501, generating a calibration signal according to a preset calibration instruction. As described above, the preset calibration instruction is used to set the parameters of the calibration signal, including: calibration signal amplitude, calibration signal frequency, calibration signal baud rate, calibration signal envelope and other key technical parameters. The calibration signal consistent with the calibration instruction is generated according to the calibration instruction. Figure 1

[0099] ​Step 502, the calibration signal is sent to the vehicle-mounted signal transmission device. In this step, according to the state of the vehicle-mounted signal transmission device, the calibration signal is sent to the vehicle-mounted signal transmission device. The vehicle-mounted signal transmission device in this specification is a vehicle-mounted BTM host. Specifically, when the vehicle-mounted signal transmission device is running on the track test line, and the vehicle-mounted signal transmission device can receive external signals, the calibration signal is sent to the vehicle-mounted signal transmission device.

[0100] Step 503, the corresponding signal output by the vehicle-mounted signal transmission device according to the calibration signal is obtained. After the vehicle-mounted signal transmission device receives the calibration signal, the calibration signal is processed into a non-error code message, and then the non-error code message is output, that is, the signal output by the vehicle-mounted signal transmission device.

[0101] Step 504, the transponder detection equipment is calibrated according to the error between the calibration signal and the corresponding signal output. In this step, the processing device calculates and analyzes the error between the calibration signal generated according to the preset instruction and the signal output by the vehicle-mounted signal transmission device. Specifically, the difference between the calibration signal and the key technical parameters included in the signal output by the vehicle-mounted signal transmission device can be calculated, and the correction coefficient can be determined according to the difference between the key technical parameters. Specifically, there are envelope difference, frequency offset, data rate difference, amplitude difference, etc. between the calibration signal and the signal output by the vehicle-mounted signal transmission device, and the correction coefficient of the key technical parameters is determined according to the specific size of these differences. For the specific method of determining the correction coefficient to calibrate the transponder detection equipment, see the description of the transponder detection equipment in the embodiment of the present specification. Figure 6 Part of the description.

[0102] As Figure 6 The calibration method of the transponder detection equipment is shown in the flow chart of the embodiment of the present specification. It includes:

[0103] Step 601, when the error does not exceed the preset threshold, the correction coefficient of the transponder detection equipment is determined according to the error, and the transponder detection equipment is calibrated by using the correction coefficient. Corresponding to the parameters of the preset calibration signal, each parameter corresponds to a specific preset threshold. For example, the preset threshold of the amplitude of the calibration signal is 0.2 volts, the frequency of the calibration signal is 100 Hz, etc. For example, the amplitude of the calibration signal is 2 volts, and the amplitude of the signal output by the vehicle-mounted signal transmission device is 1.90 volts. The difference between the amplitude of the calibration signal and the amplitude of the signal output by the vehicle-mounted signal transmission device is 0.2 volts, which does not exceed the preset threshold, so the correction coefficient of the transponder detection equipment can be determined according to the error of the signal amplitude, which is the ratio of the error of the signal amplitude to the calibration signal, which is 5%. The calibration coefficients corresponding to the remaining parameters of the preset calibration signal can also be determined in a similar manner. In this step, the preset threshold can be a value preset to judge whether the error is within a reasonable range, or it can be adjusted according to the actual test situation.

[0104] Step 602, when the error exceeds the preset threshold, determining that the transponder detection device is unqualified. In this step, when the error exceeds the preset threshold, it indicates that the error of the transponder detection device is too large and cannot be adjusted by the correction coefficient to adjust the precision of the detection device. In this case, it can be determined that the transponder detection device is unqualified, and the transponder detection device can be returned to the factory for maintenance and other processing.

[0105] As shown in Figure 7 is a flow chart of a transponder detection device calibration method according to an embodiment of the present application. Specifically, it includes the following steps:

[0106] Step 701, receiving the excitation signal provided by the vehicle-mounted signal transmission device and sending the excitation signal to the calibration host, wherein the excitation signal provided by the vehicle-mounted signal transmission device is the first excitation signal. In this step, the first excitation signal is the downlink signal with a frequency of 27.095MHz sent downward by the vehicle-mounted signal transmission device.

[0107] Step 702, receiving and extracting the first excitation signal to obtain the second excitation signal. In this step, the first excitation signal sent by the vehicle-mounted signal transmission device is received by the calibration host, and after modulation and analog-digital conversion of the first excitation signal, the second excitation signal is obtained. The second excitation signal and the first excitation signal may be changed signals, and the physical characteristics of the first excitation signal and the second excitation signal may change.

[0108] Step 703, calibrating the transponder detection device according to the error between the first excitation signal and the second excitation signal. This step is executed by the processing device, which calibrates the transponder detection device according to the offset of the signal frequency, signal energy and other key parameters in the first excitation signal and the second excitation signal. The specific method of calibrating the transponder detection device is consistent with the calibration method described in Figure 6 , and the specific method can be found in Figure 6 . This step will not be described here.

[0109] As shown in Figure 8 is a structural schematic diagram of a transponder detection device calibration apparatus according to an embodiment of the present application. The basic structure of the transponder detection device calibration apparatus is described in this diagram, and the functional units and modules therein can be implemented in software, or can be implemented by general-purpose chips or special-purpose chips. A part or all of the functional units and modules can be on the vehicle-mounted device, or a part of them can also be in the trackside device. The apparatus specifically includes:

[0110] The calibration signal generation unit 801 is configured to generate a calibration signal according to a preset calibration instruction.

[0111] The calibration signal sending unit 802 is configured to send the calibration signal to the vehicle-mounted signal transmission device.

[0112] The output signal obtaining unit 803 is configured to obtain a corresponding signal output by the vehicle-mounted signal transmission device according to the calibration signal.

[0113] The transponder detection equipment calibration unit 804 is configured to calibrate the transponder detection equipment according to an error between the calibration signal and the corresponding signal output.

[0114] The present scheme can reduce the detection error of the current transponder dynamic detection equipment, improve the detection precision, and improve the detection performance of the transponder detection equipment.

[0115] As an embodiment herein, another structure diagram of a transponder detection equipment calibration device is shown in FIG. 8. Figure 9 The device specifically includes:

[0116] The first excitation signal obtaining unit 901 is configured to receive an excitation signal provided by the vehicle-mounted signal transmission device and send the excitation signal to a calibration host, wherein the excitation signal provided by the vehicle-mounted signal transmission device is a first excitation signal.

[0117] The second excitation signal obtaining unit 902 is configured to receive and extract the first excitation signal to obtain a second excitation signal.

[0118] The transponder detection equipment calibration unit 903 is configured to calibrate the transponder detection equipment according to an error between the first excitation signal and the second excitation signal.

[0119] As shown in FIG. 8, the device specifically includes: Figure 11As shown, a computer device 1102 provided by embodiments herein can include one or more processors 1104, such as one or more central processing units (CPUs), each of which can implement one or more hardware threads. The computer device 1102 can also include any memory 1106 for storing any kind of information, such as code, settings, data, etc. Without limitation, the memory 1106 can include any one or combination of: any type of RAM, any type of ROM, a flash memory device, a hard disk, an optical disk, etc. More generally, any memory can use any technology for storing information. Further, any memory can provide volatile or non-volatile retention of information. Further, any memory can represent a fixed or removable component of the computer device 1102. In one case, the computer device 1102 can perform any operation of the associated instructions when executed by the processor 1104 stored in any memory or combination of memories. The computer device 1102 also includes one or more drive mechanisms 1108 for interacting with any memory, such as a hard disk drive mechanism, an optical disk drive mechanism, etc.

[0120] The computer device 1102 can also include an input / output module 1110 (I / O) for receiving various inputs (via input devices 1112) and for providing various outputs (via output devices 1114). One particular output mechanism can include a presentation device 1116 and an associated graphical user interface (GUI) 1118. In other embodiments, the input / output module 1110 (I / O), the input devices 1112, and the output devices 1114 can also not be included, just as a computer device in a network. The computer device 1102 can also include one or more network interfaces 1120 for exchanging data with other devices via one or more communication links 1122. One or more communication buses 1124 couple the above-described components together.

[0121] The communication links 1122 can be implemented in any manner, such as through a local area network, a wide area network (e.g., the Internet), a point-to-point connection, etc., or any combination thereof. The communication links 1122 can include any combination of hardwired links, wireless links, routers, gateway functionality, name servers, etc., governed by any protocol or combination of protocols.

[0122] Corresponding to the method in Figures 1 to 5 Embodiments herein also provide a computer readable storage medium, having stored thereon a computer program, which when executed by a processor performs the steps of the above method.

[0123] The embodiments herein also provide a computer readable instruction, wherein the program in the computer readable instruction, when executed by a processor, causes the processor to perform the method as shown in Figures 1 to 5

[0124] It should be understood that the size of the serial number of the processes described above in the various embodiments herein does not mean the order of execution, and the execution order of the processes should be determined according to its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments herein.

[0125] It should also be understood that in the embodiments herein, the term "and / or" is only a description of the association relationship of the associated objects, which means that there can be three relationships. For example, A and / or B can represent three cases of A alone, A and B together, and B alone. In addition, the character " / " in this paper generally represents that the front and rear associated objects are in an "or" relationship.

[0126] Those skilled in the art can realize that the units and algorithm steps of the examples described in combination with the embodiments disclosed herein can be realized in electronic hardware, computer software or a combination of both. In order to clearly illustrate the interchangeability of hardware and software, the components and steps of the examples have been described in the above description in general terms. Whether the functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. A person skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this paper.

[0127] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the system, device and unit described above can refer to the corresponding process in the foregoing method embodiments, which will not be repeated here.

[0128] In several embodiments provided herein, it should be understood that the disclosed system, device and method can be implemented in other ways. For example, the device embodiments described above are only schematic, for example, the division of the units is only a logical function division, and actual implementation can have another division manner, for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the displays or discussed can be indirect coupling or communication connection through some interfaces, devices or units, and can also be electrical, mechanical or other forms of connection.

[0129] ​The units described as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, i.e. may be located in one place, or may be distributed on multiple network units. Part or all of the units may be selected according to actual needs to achieve the purpose of the embodiments of the present application.

[0130] In addition, each functional unit in each embodiment herein can be integrated in one processing unit, or each unit can be physically present alone, or two or more units can be integrated in one unit. The integrated unit can be realized in the form of hardware or in the form of a software functional unit.

[0131] The integrated unit, if realized in the form of a software functional unit and sold or used as an independent product, can be stored in a computer readable storage medium. Based on this understanding, the technical solutions herein, essentially or the part of the prior art that contributes to the technical solutions, or all or part of the technical solutions can be embodied in the form of a software product. The computer software product is stored in a storage medium, and includes a number of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in each embodiment herein. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), a magnetic disk or an optical disk, and various program code storage media.

[0132] The principles and implementation manners of the present application are described in the specific embodiments herein, and the above embodiment descriptions are only used to help understand the methods and core ideas thereof; meanwhile, for those skilled in the art, according to the ideas herein, the specific implementation manners and application ranges will have changes, and the above description should not be understood as limiting the present application.

Claims

1. A transponder detection device calibration system, characterized by, The calibration system comprises: a calibration host configured to generate a calibration signal according to a preset calibration instruction, the calibration host comprising a main control board, a digital frequency modulation board and an interface board; the main control board is in communication with the digital frequency modulation board, configured to receive the preset calibration instruction and send the preset calibration instruction to the digital frequency modulation board; the digital frequency modulation board is configured to generate a calibration signal according to the received preset calibration instruction; the interface board is in communication with a vehicle-mounted signal transmission device, configured to obtain a state of the vehicle-mounted signal transmission device, and the main control board is configured to determine whether to send the calibration signal to the vehicle-mounted signal transmission device according to the state of the vehicle-mounted signal transmission device; a calibration antenna is configured to send the calibration signal to the vehicle-mounted signal transmission device, and the vehicle-mounted signal transmission device is configured to output a corresponding signal according to the calibration signal; a processing device is in communication with the calibration host and the vehicle-mounted signal transmission device, configured to calibrate a transponder detection device according to an error between the calibration signal and the signal output by the vehicle-mounted signal transmission device.

2. The transponder detection device calibration system of claim 1, wherein, The preset calibration instruction is used to set parameters of the calibration signal, and the preset calibration instruction comprises a calibration signal amplitude, a calibration signal frequency, a calibration signal baud rate and a calibration signal envelope.

3. A transponder detection device calibration system characterized by, The calibration system comprises: a calibration antenna configured to receive an excitation signal provided by a vehicle-mounted signal transmission device and send the excitation signal to a calibration host, the excitation signal provided by the vehicle-mounted signal transmission device being a first excitation signal; a calibration host configured to receive and extract the first excitation signal to obtain a second excitation signal, the calibration host comprising a main control board, a signal acquisition board and an interface board; the signal acquisition board is configured to receive the excitation signal and process the excitation signal, including modulation amplification, analog-to-digital conversion and signal extraction; the interface board is configured to communicate with the vehicle-mounted signal transmission device and obtain a state of the vehicle-mounted signal transmission device; the main control board is configured to determine whether to send a calibration signal to the vehicle-mounted signal transmission device according to the state of the vehicle-mounted signal transmission device, the calibration signal being generated according to a preset calibration instruction; a processing device configured to calibrate a transponder detection device according to an error between the first excitation signal and the second excitation signal.

4. A transponder detection device calibration method, characterized by, The method adopts the system of any one of claims 1-2, comprising: generating a calibration signal according to a preset calibration instruction; sending the calibration signal to a vehicle-mounted signal transmission device; obtaining a corresponding signal output by the vehicle-mounted signal transmission device according to the calibration signal; calibrating a transponder detection device according to an error between the calibration signal and the corresponding signal output.

5. The transponder detection device calibration method of claim 4, wherein, Calibrating a transponder detection device according to an error between the calibration signal and the corresponding signal output comprises: when the error does not exceed a preset threshold, determining a correction coefficient of the transponder detection device according to the error and calibrating the transponder detection device by using the correction coefficient; when the error exceeds the preset threshold, determining that the transponder detection device is unqualified.

6. A transponder detection device calibration method, characterized by, The method adopts the system of claim 3, comprising: receiving an excitation signal provided by a vehicle-mounted signal transmission device and sending the excitation signal to a calibration host, wherein the excitation signal provided by the vehicle-mounted signal transmission device is a first excitation signal; receiving and extracting the first excitation signal to obtain a second excitation signal; calibrating a transponder detection device according to an error between the first excitation signal and the second excitation signal.

7. A transponder detection device calibration apparatus, characterized by The device is applied to the method of claim 4, comprising: a calibration signal generation unit configured to generate a calibration signal according to a preset calibration instruction; a calibration signal sending unit configured to send the calibration signal to a vehicle-mounted signal transmission device; an output signal acquisition unit configured to acquire a corresponding signal output by the vehicle-mounted signal transmission device according to the calibration signal; a transponder detection device calibration unit configured to calibrate a transponder detection device according to an error between the calibration signal and the corresponding signal.

8. A transponder detection device calibration apparatus, characterized by The device comprises: a first excitation signal acquisition unit configured to receive an excitation signal provided by a vehicle-mounted signal transmission device and send the excitation signal to a calibration host, wherein the excitation signal provided by the vehicle-mounted signal transmission device is a first excitation signal, and the calibration host comprises a main control board, a signal acquisition board and an interface board; the signal acquisition board is configured to receive the excitation signal and process the excitation signal, including modulation amplification, analog-to-digital conversion and signal extraction; the interface board is configured to communicate with the vehicle-mounted signal transmission device and acquire a state of the vehicle-mounted signal transmission device; the main control board is configured to determine whether to send a calibration signal to the vehicle-mounted signal transmission device according to the state of the vehicle-mounted signal transmission device, wherein the calibration signal is generated according to a preset calibration instruction; a second excitation signal acquisition unit configured to receive and extract the first excitation signal to obtain a second excitation signal; a calibration unit configured to calibrate a transponder detection device according to an error between the first excitation signal and the second excitation signal.

9. A computer device comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, characterized in that, The processor executes the computer program to implement the method of any one of claims 4-6.

10. A computer-readable storage medium, characterized in that, The computer readable storage medium stores a computer program, and the computer program is executed by the processor to implement the method of any one of claims 4-6.

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