A test device for the transponder C interface

Abstract

The present application discloses a test device for a transponder C interface. The device includes a host computer and a slave computer. The host computer is provided with a first information interaction interface, and the slave computer is provided with a second information interaction interface and a third information interaction interface. The first information interaction interface is used to send control commands and message information to the slave computer, and is also used to receive feedback information returned by the slave computer. The host computer is further provided with a display module, and the display module is used to display the feedback information; the second information interaction interface is connected to the first information interaction interface, and is used to receive control commands and / or message information, and send feedback information to the first information interaction interface; the third information interaction interface is connected to the C interface of the transponder to be tested, and is used to send C interface signals to the transponder and receive feedback information returned by the transponder. Compared with the existing test system, the present test device significantly reduces the complexity of the system and requires no excessive operation steps, thereby improving the test efficiency.

Description

Technical Field

[0001] The present application relates to the technical field of railway equipment, and more specifically, to a test device for the C interface of a balise. Background Art

[0002] The balise transmission module BTM is the core of the balise transmission system. It sends energy to the balises on the track through the antenna CAU and sends the messages returned by the balises to the on-vehicle automatic protection system ATP. After the messages are decoded, the train control system obtains information such as gradient, positioning, and speed limit, so as to realize the automatic control of the train's movement.

[0003] Balises are used to provide reliable ground fixed information and variable information to the on-vehicle ATP, including passive balises and active balises. Passive balises are used to provide ground fixed information; active balises can change the transmitted data messages in real time through the connection with the ground electronic unit LEU of the railway system through the C interface.

[0004] The train control center TCC generates relevant train control information such as routes and temporary speed limits according to the route status, line parameters, temporary speed limit commands, etc., and sends the balise messages including the above control information to the corresponding active balises; the LEU is used to provide a communication interface between the train control center and the balises, and is used to receive the balise messages sent by the train control center and continuously forward them to the active balises.

[0005] The C interface is the information transmission interface between the LEU and the active balise. Functionally, it is divided into a C1 sub-interface, a C4 sub-interface, and a C6 sub-interface. The C1 sub-interface is the data interface for the LEU to transmit balise messages to the active balise; the C4 sub-interface is used for the signal generated by the active balise during the passage of the CAU through the active balise, and is an interface for preventing the LEU from performing message conversion within a specified time, and it is an optional function; the C6 sub-interface is the interface for the LEU to supply power to the active balise interface circuit. When a fault occurs in the C interface, it is possible that one of the signals fails, and there is only one signal in the C interface; or the amplitude of the C interface signal decreases, resulting in the signal being unable to be decoded.

[0006] In order to ensure the normal operation of the balise, it is necessary to test its C interface. During the test of the C interface of the balise, it is necessary to simulate the train operation state, and use the train control center TCC, LEU, and balise to form a test system as shown in Figure 1 However, this requires a large number of devices and a complex system setup, resulting in low test efficiency. Moreover, it is impossible to simply simulate the sending of various messages (single message sending, cyclic message sending, continuous message sending, sequence message sending), nor can it simply simulate the situation where the C interface signal has only a C1 signal or only a C6 signal, nor can it simply simulate the situation of C interface signals with different amplitudes. Summary of the Invention

[0007] In view of this, the present application provides a test device for the C interface of a transponder, which is used to test the C interface of the transponder to improve the test efficiency.

[0008] In order to achieve the above object, the following solution is proposed:

[0009] A test device for the C interface of a transponder includes a host computer and a slave computer. The host computer is provided with a first information interaction interface, and the slave computer is provided with a second information interaction interface and a third information interaction interface, where:

[0010] The first information interaction interface is used to send control commands and messages to the slave computer, and is also used to receive feedback information returned by the slave computer. The host computer is further provided with a display module, and the display module is used to display the feedback information;

[0011] The second information interaction interface is connected to the first information interaction interface, and is used to receive the control command and / or the message, and send the feedback information to the first information interaction interface;

[0012] The third information interaction interface is connected to the C interface of the transponder to be tested, and is used to send a C interface signal to the transponder and receive the feedback information returned by the transponder.

[0013] Optionally, the feedback information includes the command execution status and / or the C4 signal detection status.

[0014] Optionally, the control commands include some or all of a single message sending command, a cyclic message sending command, an uninterrupted message sending command, a sequence message sending command, a C1 signal turn-off / turn-on command, and a C6 signal turn-off and turn-on command.

[0015] Optionally, the slave computer includes a communication module, a logic processing module, a C1 signal digital potentiometer module, a C1 signal amplification module, a C6 signal generation module, a C6 signal digital potentiometer module, a C6 signal amplification module, and a C interface signal coupling module, where:

[0016] The communication module is provided with a first communication port, and the communication port is used as the second information interaction interface. The communication module is also signal-connected to the logic processing module;

[0017] The logic processing module is also respectively connected to the C1 signal digital potentiometer module, the C1 signal amplification module, the C6 signal generation module, and the C6 signal digital potentiometer module;

[0018] The C1 signal digital potentiometer module is also connected to the C1 signal amplification module;

[0019] The C1 signal amplification module is also respectively connected to the C interface signal coupling module and the logic processing module;

[0020] The C6 signal generation module is also connected to the C6 signal amplification module;

[0021] The C6 signal digital potentiometer module is also connected to the C6 signal amplification module;

[0022] The C6 signal amplification module is also respectively connected to the C interface signal coupling module and the logic processing module;

[0023] The C interface signal coupling module is provided with a second communication port, and the second communication port is used as the third information interaction interface.

[0024] Optionally, the communication module is used for information interaction with the host computer, and is used for receiving the control command and the message;

[0025] The logic processing module is configured to, after receiving the control command and the message forwarded by the communication module, perform DBPL encoding on the message according to the DBPL encoding rule, and send the obtained DBPL code to the C1 signal amplification module, and is also used to send an enable signal to the C6 signal generation module, and is also used to control the output of the DBPL code and the output of the C6 signal enable signal according to the control command, so as to turn off or turn on the C1 signal and the C6 signal, and is also used to perform a back-check on the C1 signal and the C6 signal to obtain the states of the C1 and C6 signals, and is also used to adjust the levels of the C1 signal digital potentiometer module and / or the C6 signal digital potentiometer module according to the back-check of the C1 signal and the C6 signal, so as to change the amplitudes of the C1 signal and the C6 signal.

[0026] The C1 signal digital potentiometer module is used to output a DC bias voltage to the C1 signal amplification module;

[0027] The C1 signal amplification module is configured to, after receiving the DBPL code and the DC bias voltage, perform power amplification on the DBPL code and output it to the C interface signal coupling module;

[0028] The C6 signal generation module is configured to, after receiving the C6 enable signal, generate the C6 signal through a DDS chip and output the C6 signal to the C6 signal digital potentiometer module;

[0029] The C6 signal digital potentiometer module is used to output a bias voltage to the C6 signal amplification module;

[0030] The C6 signal amplification module is configured to, after receiving the C6 interface signal, amplify the power of the C6 interface signal through a triode amplification circuit and output it to the C interface signal coupling module;

[0031] The C interface signal coupling module is configured to couple the C1 signal and the C6 signal in a transformer coupling manner to form the C interface signal and output it externally;

[0032] Optionally, the lower computer further includes a C4 signal detection module, where:

[0033] The C4 signal detection module is respectively connected to the logic processing module and the second communication port in a signal connection.

[0034] Optionally, the C4 signal detection module is configured to collect the C4 signal from the transponder and transmit it to the logic processing module.

[0035] Optionally, the logic processing module is further configured to receive the C4 signal and feedback it to the upper computer.

[0036] As can be seen from the above technical solutions, this application discloses a test device for the C interface of a transponder. The device includes an upper computer and a lower computer. The upper computer is provided with a first information interaction interface, and the lower computer is provided with a second information interaction interface and a third information interaction interface. The first information interaction interface is used to send control commands and message information to the lower computer, and is also used to receive the feedback information returned by the lower computer. The upper computer is further provided with a display module, and the display module is used to display the feedback information; the second information interaction interface is connected to the first information interaction interface, and is used to receive control commands and / or message information and send the feedback information to the first information interaction interface; the third information interaction interface is connected to the C interface of the transponder to be tested, and is used to send the C interface signal to the transponder and receive the feedback information returned by the transponder. Compared with the existing test system, when testing, the user only needs to connect the upper computer to the lower computer and connect the C interface of the transponder to be tested to the lower computer to achieve the purpose of testing, which significantly reduces the complexity of the system and requires no excessive operation steps, thereby improving the test efficiency. Description of the Drawings

[0037] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0038] Figure 1 It is a system block diagram of an existing test system for a transponder;

[0039] Figure 2 Block diagram of a test device for the C interface of a transponder according to an embodiment of the present application;

[0040] Figure 3 Block diagram of another test device for the C interface of a transponder according to an embodiment of the present application;

[0041] Figure 4 Block diagram of yet another test device for the C interface of a transponder according to an embodiment of the present application;

[0042] Figure 5 Flowchart of a message sending according to an embodiment of the present application;

[0043] Figure 6 Flowchart of turning off the C1 signal according to an embodiment of the present application;

[0044] Figure 7 Flowchart of turning off the C6 signal according to an embodiment of the present application;

[0045] Figure 8 Flowchart of detecting the C4 signal according to an embodiment of the present application. Detailed implementation manners

[0046] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0047] Embodiment

[0048] Figure 2 Block diagram of a test device for the C interface of a transponder according to an embodiment of the present application.

[0049] As Figure 2 shown, the test device provided in this embodiment is used to test whether the C interface of the transponder to be tested can work properly. The test device includes a host computer 10 and a slave computer 20, and the two are signal-connected or data-connected through a data line to achieve data interaction between the two.

[0050] The host computer can generally be implemented by a computer, a workstation or a server, and it includes at least a first information interaction interface 101 and a display module 102, and the display module can be implemented by a display. The slave computer is provided with a second information interaction interface 201 and a third information interaction interface 202. The first information interaction interface is connected to the second information interaction interface, and the third information interaction interface is used to connect the C interface of the transponder to be tested.

[0051] The host computer sends control commands and messages to the slave computer based on the user's operations, program control, automatic or manual operations through its first information interaction interface; after receiving the control commands and messages using the second information interaction interface, the slave computer sends corresponding messages to the connected transponder through its third information interaction interface based on the operating rules specified by the control commands, and receives the feedback information fed back by the transponder through its C interface based on the message.

[0052] The control commands include some or all of the single message sending command, cyclic message sending command, continuous message sending command, sequence message sending command, turn-off / turn-on C1 signal command, and turn-off and turn-on C6 signal command, the C1 signal amplitude level, and the C6 signal amplitude level.

[0053] After receiving the feedback information, the slave computer sends the feedback information to the host computer, and the host computer then uses its display module to display the feedback information to the user. The feedback information includes the command execution status and can indicate whether the transponder is working properly. Therefore, the user can implement the test of the C interface of the transponder through the feedback information. In addition, the feedback information also includes the detection status of the C4 signal.

[0054] As can be seen from the above technical solution, this embodiment provides a test device for the C interface of a transponder. The device includes a host computer and a slave computer. The host computer is provided with a first information interaction interface, and the slave computer is provided with a second information interaction interface and a third information interaction interface. The first information interaction interface is used to send control commands and message information to the slave computer, and is also used to receive the feedback information returned by the slave computer. The host computer is also provided with a display module, and the display module is used to display the feedback information; the second information interaction interface is connected to the first information interaction interface, and is used to receive control commands and / or message information, and send the feedback information to the first information interaction interface; the third information interaction interface is connected to the C interface of the transponder to be tested, and is used to send C interface signals to the transponder and receive the feedback information returned by the transponder. Compared with the existing test system, when testing, the user only needs to connect the host computer to the slave computer and connect the C interface of the transponder to be tested to the slave computer to achieve the purpose of testing, which significantly reduces the complexity of the system and requires no excessive operation steps, thereby improving the test efficiency.

[0055] Moreover, it can simply simulate the situations of sending various messages (single message sending, cyclic message sending, continuous message sending, sequence message sending), can also simulate the situation where the C interface signal has only the C1 signal or only the C6 signal, and can also simply simulate the situation of C interface signals with different amplitudes.

[0056] In a specific implementation manner of this embodiment, the lower computer of the test device includes a communication module 21, a logic processing module 22, a C1 signal digital potentiometer module 23, a C1 signal amplification module 24, a C6 signal generation module 25, a C6 signal digital potentiometer module 26, a C6 signal amplification module 27, and a C interface signal coupling module 28, as Figure 3 shown.

[0057] The communication module is provided with a first communication port 211. The communication port is used as a second information interaction interface, and the communication module is also respectively connected to the logic processing module in a signal connection manner; the logic processing module is also respectively connected to the C1 signal digital potentiometer module, the C1 signal amplification module, the C6 signal generation module, and the C6 signal digital potentiometer module; the C6 signal generation module is also connected to the C6 signal amplification module in a signal connection manner.

[0058] The C6 signal amplification module is also connected to the C interface signal coupling module in a signal connection manner; the C1 signal amplification module is also connected to the C interface signal coupling module in a signal connection manner; the C interface signal coupling module is provided with a second communication port 281, and the second communication port is used as a third information interaction interface.

[0059] In addition, as Figure 4 shown, in order to test the transponder with a C4 sub-interface, the test device in this embodiment further includes a C4 signal detection module 29, as Figure 4 shown. The C4 signal detection module is respectively connected to the logic processing module and the second communication port of the C interface signal coupling module.

[0060] The communication module is used for information interaction with the upper computer.

[0061] The logic processing module is the processing core of the lower computer, and it has the following functions:

[0062] a) Receiving the control command and message from the communication module, and after receiving the message, performing DBPL encoding on the message according to the DBPL encoding rule to obtain a DBPL code, and sending the DBPL code to the C1 signal amplification module;

[0063] b) Sending an enable signal to the C6 signal generation module;

[0064] c) According to the upper computer command, controlling the output of the DBPL code and the C6 enable signal to realize the turn-off and turn-on of the C1 signal and the C6 signal;

[0065] d) Performing a back-check on the C1 signal and the C6 signal to confirm the states of the C1 and C6 signals;

[0066] e) Receiving the C4 signal and feeding it back to the upper computer through the communication module.

[0067] The C1 signal digital potentiometer module outputs a DC bias voltage to the C1 signal amplification module.

[0068] After receiving the DBPL code and the DC bias voltage, the C1 signal amplification module amplifies the power of the DBPL code. After amplification, it meets the specific C1 signal amplitude requirement and outputs it to the C interface signal coupling module.

[0069] After receiving the C6 enable signal, the C6 signal generation module generates a C6 signal through a DDS chip and outputs it to the C6 signal digital potentiometer module.

[0070] The C6 signal digital potentiometer module outputs a bias voltage to the C6 signal amplification module.

[0071] After receiving the C6 signal, the C6 signal amplification module amplifies the power of the C6 signal through a triode amplifier circuit. After amplification, it meets the specific C6 signal amplitude requirement and outputs it to the C interface signal coupling module.

[0072] The C interface signal coupling module uses a transformer coupling method to couple the C1 signal and the C6 signal to form the external output of the C interface signal.

[0073] The C4 signal detection module collects the C4 signal from the transponder and transmits it to the logic processing module.

[0074] In addition, this embodiment also includes a power supply module. The power supply module is used to generate the DC voltage required when other circuit modules work. The power supply module is powered by a battery and at the same time forms a power interface with the outside to realize the charging of the battery.

[0075] This test device realizes the sending of messages through the following steps, as Figure 5 shown.

[0076] S101. The host computer sends commands, messages, and C1 / C6 signal amplitude levels.

[0077] Among them, the commands include single - time / cyclic / uninterrupted / sequence sending of messages, etc.;

[0078] S102. Generate the C1 signal: output the DBPL code, set the DC bias voltage, and amplify the C1 signal;

[0079] S103. Generate the C6 signal: output the C6 enable signal, generate the C6 signal, set the DC bias voltage, and amplify the C6 signal;

[0080] S104. Synthesize the C1 and C6 signals and output them;

[0081] S105. Perform a back - check on the C1 and C6 signals. If abnormal, feedback to the host computer;

[0082] S106. Complete sending the message according to the command requirements, or keep sending the message until a new command arrives.

[0083] The test device in this embodiment shuts off the C1 signal through the following steps, as Figure 6 shown:

[0084] S201. The host computer sends a C1 shutdown command;

[0085] S202. Generate the C1 signal: Stop outputting the DBPL code;

[0086] S203. Generate the C6 signal: Output the C6 enable signal, generate the C6 signal, set the DC bias voltage, and amplify the C6 signal;

[0087] S204. Synthesize the C1 and C6 signals and output them;

[0088] S205. Check the C1 and C6 signals. If abnormal, feedback to the host computer;

[0089] S206. Complete sending the message according to the command requirements, or keep sending the message until a new command arrives.

[0090] The test device in this embodiment shuts off the C6 signal through the following steps, as Figure 7 shown:

[0091] S301. The host computer sends a command and a message. The command is to send the message once / cyclically / continually / sequentially;

[0092] S302. Generate the C1 signal: Output the DBPL code, set the DC bias voltage, and amplify the C1 signal;

[0093] S303. Generate the C6 signal: Shut off the C6 enable signal;

[0094] S304. Synthesize the C1 and C6 signals and output them;

[0095] S305. Check the C1 and C6 signals. If abnormal, feedback to the host computer;

[0096] S306. Complete sending the message according to the command requirements, or keep sending the message until a new command arrives.

[0097] The test device in this embodiment also sends the message through the following steps, as Figure 8 shown:

[0098] S401. The lower computer detects the C4 signal;

[0099] S402. If there is a C4 signal, feedback to the host computer;

[0100] S403. The host computer displays the C4 signal;

[0101] Each embodiment in this specification is described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. For the same or similar parts among the embodiments, reference can be made to each other.

[0102] Those skilled in the art should understand that the embodiments of the present invention can be provided as a method, a device, or a computer program product. Therefore, the embodiments of the present invention can take the form of an all - hardware embodiment, an all - software embodiment, or an embodiment combining software and hardware aspects. Moreover, the embodiments of the present invention can take the form of a computer program product implemented on one or more computer - usable storage media (including but not limited to disk storage, CD - ROM, optical storage, etc.) containing computer - usable program code.

[0103] The embodiments of the present invention are described with reference to the flowcharts and / or block diagrams of the method, terminal device (system), and computer program product according to the embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram can be implemented by computer program instructions, and the combination of the processes and / or blocks in the flowchart and / or block diagram can also be implemented by computer program instructions. These computer program instructions can be provided to the processor of a general - purpose computer, a special - purpose computer, an embedded processor, or other programmable data - processing terminal devices to generate a machine, so that the instructions executed by the processor of the computer or other programmable data - processing terminal devices generate a device for implementing the functions specified in Figure 1 one process or multiple processes and / or blocks Figure 1 one block or multiple blocks.

[0104] These computer program instructions can also be stored in a computer - readable memory that can direct a computer or other programmable data - processing terminal devices to work in a specific manner, so that the instructions stored in the computer - readable memory generate a manufactured product including an instruction device, and the instruction device implements the functions specified in Figure 1 one process or multiple processes and / or blocks Figure 1 one block or multiple blocks.

[0105] These computer program instructions can also be loaded onto a computer or other programmable data - processing terminal devices, so that a series of operation steps are executed on the computer or other programmable terminal devices to generate a computer - implemented process. Thus, the instructions executed on the computer or other programmable terminal devices provide steps for implementing the functions specified in Figure 1 one process or multiple processes and / or blocks Figure 1 one block or multiple blocks.

[0106] While the preferred embodiments of the embodiments of the present invention have been described, those skilled in the art can make additional changes and modifications to these embodiments once they learn the basic creative concepts. Therefore, the appended claims are intended to be construed to include the preferred embodiments as well as all changes and modifications that fall within the scope of the embodiments of the present invention.

[0107] Finally, it should also be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or terminal device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or terminal device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or terminal device comprising the element.

[0108] The technical solutions provided by the present invention have been introduced in detail above. Specific examples are used in this text to elaborate on the principles and implementation manners of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manners and application scopes. In summary, the content of this specification should not be construed as a limitation to the present invention.

Claims

1. A test device for a transponder C interface, characterized in that, it includes a host computer and a slave computer, and the host computer is connected to the slave computer through a data line for data connection; the host computer is provided with a first information interaction interface, and the slave computer includes a communication module, a logic processing module, a C1 signal digital potentiometer module, a C1 signal amplification module, a C6 signal generation module, a C6 signal digital potentiometer module, a C6 signal amplification module and a C interface signal coupling module, wherein: the logic processing module is respectively connected to the communication module, the C1 signal digital potentiometer module, the C1 signal amplification module, the C6 signal generation module, the C6 signal digital potentiometer module and the C6 signal amplification module; the C1 signal digital potentiometer module is further connected to the C1 signal amplification module; the C1 signal amplification module is further connected to the C interface signal coupling module; the C6 signal amplification module is further respectively connected to the C6 signal generation module, the C6 signal digital potentiometer module and the C interface signal coupling module; the communication module is provided with a first communication port; the C interface signal coupling module is provided with a second communication port; the first information interaction interface is used to send control commands and messages to the slave computer, and is also used to receive feedback information returned by the slave computer, and the host computer is further provided with a display module, and the display module is used to display the feedback information; the first communication port is connected to the first information interaction interface, and is used to receive the control command and / or the message, and send the feedback information to the first information interaction interface; the second communication port is connected to the C interface of the transponder to be tested, and is used to send C interface signals to the transponder and receive the feedback information returned by the transponder.

2. The test device according to claim 1, characterized in that, the feedback information includes the command execution situation and / or the C4 signal detection situation.

3. The test device according to claim 1, characterized in that, the control commands include some or all of a single send message command, a loop send message command, an uninterrupted send message command, a sequence message send command, a turn-off / turn-on C1 signal command, and a turn-off and turn-on C6 signal command, the C1 signal amplitude level, and the C6 signal amplitude level.

4. The test device according to claim 1, characterized in that, the communication module is used for information interaction with the host computer and is used to receive the control command and the message; The logic processing module is configured to, after receiving the control command and the message forwarded by the communication module, perform DBPL encoding on the message according to the DBPL encoding rule, and send the obtained DBPL code to the C1 signal amplification module. It is also configured to send a C6 enable signal to the C6 signal generation module, and further configured to control the output of the DBPL code and the output of the C6 enable signal according to the control command, so as to turn off or turn on the C1 signal and the C6 signal. It is also configured to perform a feedback check on the C1 signal and the C6 signal to obtain the status of the C1 and C6 signals, and further configured to adjust the levels of the C1 signal digital potentiometer module and / or the C6 signal digital potentiometer module according to the C1 / C6 signal amplitude level in the control command and the feedback check of the C1 signal and the C6 signal, so as to change the amplitudes of the C1 signal and the C6 signal; The C1 signal digital potentiometer module is configured to output a DC bias voltage to the C1 signal amplification module; The C1 signal amplification module is configured to, after receiving the DBPL code and the DC bias voltage, perform power amplification on the DBPL code and output it to the C interface signal coupling module; The C6 signal generation module is configured to, after receiving the C6 enable signal, generate the C6 signal through a DDS chip and output the C6 signal to the C6 signal amplification module; The C6 signal digital potentiometer module is configured to output a bias voltage to the C6 signal amplification module; The C6 signal amplification module is configured to, after receiving the C6 signal and the DC bias voltage, perform power amplification on the C6 signal through a triode amplification circuit and output it to the C interface signal coupling module; The C interface signal coupling module is configured to couple the C1 signal and the C6 signal by means of transformer coupling to form the C interface signal and output it externally.

5. The test device according to claim 1, wherein, the lower computer further includes a C4 signal detection module, wherein: the C4 signal detection module is further connected to the logic processing module.

6. The test device according to claim 5, wherein, the C4 signal detection module is configured to collect the C4 signal from the transponder and transmit it to the logic processing module.

7. The test device according to claim 6, wherein, the logic processing module is further configured to receive the C4 signal and feedback it to the upper computer.

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