System and method for monitoring operation state of transponder

Abstract

The invention provides a transponder operation state monitoring system and method, and the transponder safety monitoring system provided by the invention comprises a rail-side electronic unit and a transponder. Specifically, a signal demodulation unit in the transponder is used for receiving a message signal and carrying out signal demodulation on the message signal to obtain a first demodulation signal, the first demodulation signal is sent to a signal generation unit in the transponder, and the signal generation unit generates a state transmission signal used for representing the operation state of the transponder according to the first demodulation signal. And the state transmission signal is sent to a state monitoring module in the trackside electronic unit, so that the operation state of the transponder is monitored through the state monitoring module and the state transmission signal. Through the transponder operation state monitoring system, the whole monitoring process of the transponder occurs in the actual vehicle-ground communication process, the state monitoring of the transponder can be realized without simulating the read-write function of a vehicle-mounted antenna, and the risk of false start of the transponder is avoided.

Description

Technical Field

[0001] The present application relates to the field of digital signal technology, and in particular to a transponder operating status monitoring system and method. Background Art

[0002] The transponder is a ground positioning device in the train control system. It is used to achieve mutual communication between the ground and the train at a specific location. It is often installed in the middle of the rails of the railway line. When the train passes the transponder, the transponder on-board antenna installed at the bottom of the locomotive head will send a high-frequency downlink excitation RF signal to the transponder, and the transponder will respond with a corresponding uplink signal to the on-board antenna at the head of the train based on the received signal. Therefore, when the train is approaching exit or entry stations and special speed limit areas, the information conveyed by the transponder to the train's on-board antenna often needs to be changed, so it is necessary to deploy active transponders and matching LEUs (line side electronic units) on the railway tracks.

[0003] However, in the existing transponders and the matching LEUs, the feedback mechanism between the LEU and the transponder is not perfect. When the transponder fails and the train-ground communication fails, the LEU end based on the existing C interface design cannot obtain the working status of the active transponder, that is, the LEU cannot determine whether the active transponder has failed. In the prior art, a communication device that can simulate the read and write function of the vehicle-mounted antenna is installed near the transponder. When the transponder is in an idle state, the functional integrity of the transponder is checked by simulating the read and write function of the vehicle-mounted antenna, thereby completing the operation status monitoring of the transponder. Although this method can timely monitor the abnormalities in the transponder, since it detects whether there are abnormalities in the transponder by simulating the read and write function of the train's on-board antenna, it sometimes causes the transponder to start up incorrectly, thereby transmitting information to trains that have not arrived at the station, which poses certain safety hazards.

[0004] Therefore, how to solve the problem that the transponder may be mistakenly started during the existing monitoring of the operating status of the transponder, thereby causing safety hazards, has become a technical problem that technical personnel in this field urgently need to solve. Summary of the invention

[0005] Based on the above problems, in order to solve the problem that the transponder may be mistakenly started during the existing monitoring of the operating status of the transponder, thereby causing safety hazards, the present application provides a transponder operating status monitoring system and method.

[0006] The embodiments of the present application disclose the following technical solutions:

[0007] In a first aspect, the present application discloses a transponder operation status monitoring system, comprising: a trackside electronic unit and a transponder; the trackside electronic unit comprises: a signal transmission module and a status monitoring module; the transponder comprises: a signal demodulation unit and a signal generation unit;

[0008] The signal transmission module is used to send a message signal to the signal demodulation unit;

[0009] The signal demodulation unit is used to perform signal demodulation on the message signal to obtain a first demodulation signal, and send the first demodulation signal to the signal generation unit;

[0010] The signal generating unit is used to generate a state transmission signal according to the first demodulated signal, and send the state transmission signal to the state monitoring module; the state transmission signal is used to represent the operating state of the transponder;

[0011] The status monitoring module is used to monitor the operating status of the transponder according to the status transmission signal.

[0012] Optionally, the signal generating unit includes: an active circuit module and a passive circuit module; the passive circuit module includes a passive control circuit;

[0013] The active circuit module is used to perform signal decomposition on the first demodulated signal based on a preset decomposition ratio to obtain a second demodulated signal and a third demodulated signal, and send the second demodulated signal to the passive circuit module;

[0014] The passive circuit module is used to receive the second demodulated signal, perform signal conversion on the second demodulated signal to obtain a passive circuit control signal, and send the passive circuit control signal to the active circuit module;

[0015] The active circuit module is further used to receive the passive circuit control signal, and generate the state transmission signal according to the third demodulated signal and the passive circuit control signal.

[0016] Optionally, the transponder safety monitoring system further comprises: a filter; the filter comprises: a first filtering module;

[0017] The first filtering module is used to perform signal filtering processing on the state transmission signal when the state transmission signal is transmitted to the state monitoring module to obtain a state transmission signal after filtering processing.

[0018] Optionally, the status monitoring module is specifically used to:

[0019] According to the status transmission signal, it is determined whether the status transmission signal satisfies a preset signal condition. If the status transmission signal satisfies the preset signal condition, it indicates that the operating state of the transponder is normal.

[0020] Optionally, the filter further comprises: a second filtering module;

[0021] The second filtering module is used to perform signal filtering processing on the message signal when the message signal is transmitted to the signal demodulation unit to obtain a message signal after filtering processing.

[0022] In a second aspect, the present application discloses a method for monitoring the operating status of a transponder, comprising:

[0023] Obtain message signals from the trackside electronic unit;

[0024] Performing signal demodulation on the message signal to obtain a first demodulated signal;

[0025] generating a state transmission signal according to the first demodulated signal; the state transmission signal is used to characterize the operating state of the transponder;

[0026] The operating status of the transponder is monitored according to the status transmission signal.

[0027] Optionally, the transponder includes: a passive control circuit; and generating a state transmission signal according to the first demodulated signal specifically includes:

[0028] Decomposing the first demodulated signal based on a preset decomposition ratio to obtain a second demodulated signal and a third demodulated signal;

[0029] Performing signal conversion on the second demodulated signal to obtain a passive circuit control signal;

[0030] The state transmission signal is generated according to the passive circuit control signal and the third demodulated signal.

[0031] Optionally, before monitoring the operating status of the transponder according to the status transmission signal, the method further includes:

[0032] The state transmission signal is subjected to signal filtering processing to obtain a filtered state transmission signal.

[0033] Optionally, the monitoring the operating status of the transponder according to the status transmission signal specifically includes:

[0034] According to the status transmission signal, it is determined whether the status transmission signal satisfies a preset signal condition. If the status transmission signal satisfies the preset signal condition, it indicates that the operating state of the transponder is normal.

[0035] Optionally, before demodulating the message signal to obtain the first demodulated signal, the method further includes:

[0036] The message signal is filtered to obtain a filtered message signal.

[0037] Compared with the prior art, the present application has the following beneficial effects: the present application provides a transponder operation status monitoring system and method. In the transponder safety monitoring system provided in the present application, a trackside electronic unit and a transponder are included; wherein the trackside electronic unit includes a signal transmission module and a status monitoring module, and the transponder includes a signal demodulation unit and a signal generating unit; specifically, the signal transmission module is used to send a message signal to the signal demodulation module. After receiving the message signal, the signal demodulation module will demodulate the received message signal to obtain a first demodulated signal, and send the first demodulated signal to the signal generating unit. After receiving the first demodulated signal, the signal generating unit will generate a status transmission signal for characterizing the operation status of the transponder according to the first demodulated signal, and send the status transmission signal to the status monitoring module. Finally, the status monitoring module will monitor the operation status of the transponder according to the specific status transmission signal obtained. Through the above-mentioned transponder operation status monitoring system, when the train enters the station and the trackside electronic unit sends message information to the transponder, a status transmission signal for characterizing the working status of the transponder can be generated through the sent message information, and finally the status monitoring module in the trackside electronic unit analyzes it to complete the operation status monitoring of the transponder. The entire transponder monitoring process occurs during the actual train-to-ground communication process, and the status monitoring of the transponder can be realized without simulating the read and write functions of the vehicle-mounted antenna, so that the transponder will not be accidentally started, thereby ensuring the safety of the transponder operation status monitoring. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0039] Figure 1 A schematic diagram of the structure of a transponder operating status monitoring system provided in an embodiment of the present application;

[0040] Figure 2 A schematic diagram of the principle of a transponder operating status monitoring system provided in an embodiment of the present application;

[0041] Figure 3 A flowchart of a method for monitoring the operating status of a transponder provided in an embodiment of the present application;

[0042] Figure 4 A schematic diagram of the structure of an electronic device for monitoring the operating status of a transponder provided in an embodiment of the present application. DETAILED DESCRIPTION

[0043] As described above, the transponders currently used to achieve communication between the ground and the train at a specific location are often installed in the middle of the rails of the railway line. When the train passes the transponder, the transponder on-board antenna installed at the bottom of the locomotive head will send a high-frequency downlink excitation RF signal to the transponder, and the transponder will respond to the on-board antenna at the head of the train with a corresponding uplink signal based on the received signal. Therefore, when the train is approaching exit, entrance, and special speed limit areas, the information conveyed by the transponder to the train on-board antenna often needs to be changed, so it is necessary to deploy active transponders and matching LEUs on the railway tracks.

[0044] However, in the existing transponders and the matching LEUs, the feedback mechanism between the LEU and the transponder is not perfect. When the transponder fails and the train-ground communication fails, the LEU end based on the existing C interface design cannot obtain the working status of the active transponder, that is, the LEU cannot determine whether the active transponder has failed. In the prior art, a communication device that can simulate the read and write function of the vehicle-mounted antenna is installed near the transponder. When the transponder is in an idle state, the functional integrity of the transponder is checked by simulating the read and write function of the vehicle-mounted antenna, thereby completing the operation status monitoring of the transponder. Although this method can timely monitor the abnormalities in the transponder, since it detects whether there are abnormalities in the transponder by simulating the read and write function of the train's on-board antenna, it sometimes causes the transponder to start up incorrectly, thereby transmitting information to trains that have not arrived at the station, which poses certain safety hazards.

[0045] Therefore, how to solve the problem that the transponder may be mistakenly started during the existing monitoring of the operating status of the transponder, thereby causing safety hazards, has become a technical problem that technical personnel in this field urgently need to solve.

[0046] In order to solve the above problems, the present application provides a transponder operation status monitoring system and method. In the transponder safety monitoring system provided in the present application, a trackside electronic unit and a transponder are included; wherein the trackside electronic unit includes a signal transmission module and a status monitoring module, and the transponder includes a signal demodulation unit and a signal generating unit; specifically, the signal transmission module is used to send a message signal to the signal demodulation module. After receiving the message signal, the signal demodulation module will demodulate the received message signal to obtain a first demodulated signal, and send the first demodulated signal to the signal generating unit. After receiving the first demodulated signal, the signal generating unit will generate a status transmission signal for characterizing the operation status of the transponder according to the first demodulated signal, and send the status transmission signal to the status monitoring module. Finally, the status monitoring module will monitor the operation status of the transponder according to the specific status transmission signal obtained. Through the above-mentioned transponder operation status monitoring system, when the train enters the station and the trackside electronic unit sends message information to the transponder, a status transmission signal for characterizing the working status of the transponder can be generated through the sent message information, and finally the status monitoring module in the trackside electronic unit analyzes it to complete the operation status monitoring of the transponder. The entire transponder monitoring process occurs during the actual train-to-ground communication process, and the status monitoring of the transponder can be realized without simulating the read and write functions of the vehicle-mounted antenna, so that the transponder will not be accidentally started, thereby ensuring the safety of the transponder operation status monitoring.

[0047] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0048] System Example

[0049] It should be noted that Figure 2 A schematic diagram of the principle of a transponder operation status monitoring system provided in an embodiment of the present application, which can be specifically combined with Figure 2 Let's have a further understanding of the transponder operation status monitoring system introduced in the following embodiment.

[0050] In actual application scenarios, the connecting cable between the transponder and the trackside electronic unit is the transponder tail cable, which is called the C-interface network. The corresponding signals transmitted in its network are collectively referred to as C-interface signals. The C-interface signal defines mandatory signal types C1 and C6 and special type signals CX.

[0051] Therefore, in this embodiment, the C1 signal will be used as the first demodulation signal in this application, the mixed signal of the C1 and C6 signals will be used as the message signal in this application, and the CX signal will be used as the state transmission signal in this application to further illustrate the embodiment of the present application.

[0052] See also Figure 1 , which is a schematic diagram of the structure of a transponder operation status monitoring system provided in an embodiment of the present application, specifically comprising a trackside electronic unit 500 and a transponder 600; wherein the trackside electronic unit comprises a signal transmission module 100 and a status monitoring module 200; the transponder comprises a signal demodulation unit 300 and a signal generation unit 400, wherein:

[0053] The signal transmission module 100 is used to send a message signal to the signal demodulation module;

[0054] In the existing transponders and their matching trackside electronic units, the two complete signal transmission through the C-interface tail cable, which is generally used in the throat section of the train exiting the station to transmit controllable real-time information. Therefore, when the train passes the transponder installed in the line rail, it will send a downlink excitation radio frequency signal to the transponder through the on-board antenna, thereby controlling the start of the transponder. After detecting the start of the transponder, the matching trackside electronic unit will transmit an instant and controllable message signal to the transponder, thereby establishing vehicle-to-ground communication through the transponder, and instantly providing the train with variable information such as temporary speed limit information of the railway track and the opening and closing of the on-board signal.

[0055] Specific can be combined Figure 2 For further understanding, in the embodiment of the present application, the trackside electronic unit includes a signal transmission module 100 and a status monitoring module 200. Among the message signals sent by the signal transmission module, they are mainly C1 signals and C6 signals, which are used to provide instant and controllable traffic information to the driver on the train.

[0056] The signal demodulation unit 300 is used to demodulate the message signal to obtain a first demodulated signal, and send the first demodulated signal to the signal generation unit;

[0057] The signal demodulation unit is located in the transponder, and is used to receive a message signal, demodulate the message signal, obtain a first demodulated signal, and send the first demodulated signal to the signal generation unit to facilitate the generation of a subsequent state transmission signal.

[0058] Combine the following Figure 2The demodulation process of the message signal is explained in detail. In the actual application scenario, the transponder includes an active circuit module and a passive circuit module. The active circuit module includes a transponder protection circuit, a signal demodulation unit, and a conditioning circuit. In the signal demodulation unit, a transformer coupling circuit for demodulating the message signal is built in. After receiving the message signal containing the C1 signal and the C6 signal, the signal is demodulated by the built-in transformer coupling circuit to obtain the first demodulation signal C1.

[0059] The signal generating unit 400 is used to generate a state transmission signal according to the first demodulated signal, and send the state transmission signal to the state monitoring module; the state transmission signal is used to represent the operating state of the transponder.

[0060] After the message signal is demodulated to obtain the first demodulated signal, a status transmission signal for representing the operating status of the transponder is generated according to the obtained first demodulated signal.

[0061] Specifically, the signal generating unit includes an active circuit module and a passive circuit module, both of which have an active control circuit and a passive control circuit built in, respectively. In the process of generating a state transmission signal according to the first demodulated signal, first, the active circuit module in the signal generating unit decomposes the first demodulated signal based on a preset decomposition ratio to obtain a second demodulated signal and a third demodulated signal, and sends the second demodulated signal to the passive circuit module. After receiving the second demodulated signal, the passive circuit module converts the obtained second demodulated signal to obtain a passive circuit control signal, and resends the passive circuit control signal to the active circuit module. Finally, the active circuit module generates a state transmission signal according to the received passive circuit control signal and the third demodulated signal obtained when the first demodulated signal is decomposed.

[0062] In actual application scenarios, the active transponder includes an active transponder module and a passive transponder module. Therefore, in order to accurately monitor the working state of the active transponder, when the active transponder receives the first demodulated signal, the first demodulated signal will be decomposed according to a preset decomposition ratio, and the first demodulated signal will be decomposed into two parts, the second demodulated signal and the third demodulated signal. Then, one part of the demodulated signal, that is, the second demodulated signal, is sent to the passive circuit module of the passive transponder, so that the passive circuit module generates a control signal of its internal passive control circuit through the second demodulated signal, and then combines this passive circuit control signal and the third demodulated signal to generate a state transmission signal. Because the state transmission signal is generated based on the passive circuit control signal and the third demodulated signal, it can accurately characterize the working state of the active circuit module and the passive circuit module in the transponder, making the monitoring of the transponder operation state more comprehensive.

[0063] Specific combination Figure 2 For further understanding, after demodulating the message signal containing C1 and C6 signals to obtain the C1 signal, it will send a part of the demodulated C1 signal to the passive circuit module through the conditioning circuit. The passive circuit module converts the C1 signal through its internal control circuit to generate a passive circuit control signal. Finally, its control circuit resends the passive circuit control signal to the active circuit module to generate a state transmission signal CX together with the signal C1.

[0064] The status monitoring module 200 is used to monitor the operating status of the transponder according to the status transmission signal.

[0065] After generating the status transmission signal based on the passive control signal and the demodulated signal, the active circuit module will send the status transmission signal used to characterize the working status of the transponder to the status monitoring module in the trackside electronic unit. After receiving the status transmission signal, the status monitoring module will monitor the operating status of the transponder based on the obtained status transmission signal.

[0066] Specifically, when the status monitoring module monitors the operating status of the transponder according to the status transmission signal, the preset signal condition is compared with the status transmission signal to monitor the operating status of the transponder. If the status transmission signal satisfies the preset signal condition, it means that the operating status of the transponder is normal.

[0067] It is understandable that in the railway system, the C1 signal contains information that prompts the train to temporarily limit its speed in a specific driving section. In addition, when the signal transmitted in the C interface is normal, the C1 signal will be converted into an uplink signal by the transponder to replace the default message information stored in the transponder. Therefore, in the C1 signal, it carries specific information about the train passing through a specific section. The C1 signal is obtained by demodulation, and the status transmission signal is obtained based on this construction. Since the C1 signal contains information about a specific section, when the status monitoring module performs status monitoring based on the status transmission signal, it can be determined whether the operating status of the transponder is in a normal state by judging whether the information contained in the status transmission signal meets the preset information standard, thereby completing the monitoring of the operating status of the transponder.

[0068] As an optional implementation, the transponder security monitoring system further includes: a filter; the filter includes: a first filtering module;

[0069] The first filtering module is used to perform signal filtering processing on the state transmission signal when the state transmission signal is transmitted to the state monitoring module to obtain a state transmission signal after filtering processing.

[0070] In actual application scenarios, during the transmission of the state transmission signal to the state monitoring module, since the state transmission signal is essentially generated when the balise communicates with the train, it is often transmitted in a mixed signal. Therefore, a filter containing a first filter module is provided in the transmission line between the trackside electronic unit and the balise, and the first filter module is used to filter the mixed signal to obtain a filtered state transmission signal.

[0071] Specifically combined with Figure 2 In the state transmission signal CX, since the state transmission signal CX is generated when the balise communicates with the train, a portion of the C1 signal and the C6 signal often exist in the CX signal when the CX signal is transmitted to the state monitoring module. Therefore, after the state transmission signal CX signal is obtained, the mixed signal containing the CX signal will first pass through the first filter module in the filter, thereby filtering out the C1 signal and the C6 signal therein, so as to obtain the state transmission signal CX after filtering.

[0072] As another optional implementation, the filter further includes: a second filter module;

[0073] The second filtering module is used to filter the message signal when the message signal is transmitted to the signal demodulation unit to obtain a filtered message signal.

[0074] In actual application scenarios, the transmission of message information between the trackside electronic unit and the transponder is often very rapid and accompanied by high-frequency information exchange. Therefore, in the process of the trackside electronic unit transmitting message information to the transponder, although the trackside electronic unit itself does not have the ability to transmit status signals, the transmitted message signals may still carry status transmission signals contained in status monitoring. Therefore, the present application also provides a second filtering module in the filter for filtering status transmission signals, which is used to filter the message signals sent by the signal transmission module to filter out the status transmission signals and obtain the filtered message signals.

[0075] The specific combination of Figure 2 In the embodiment, the second filtering module in the filter is used to filter the CX signal in the message signals C1 and C6, thereby ensuring the transmission of the C1 signal and the C6 signal.

[0076] The present embodiment provides a transponder operation status monitoring system and method. The transponder safety monitoring system provided in the present application includes a trackside electronic unit and a transponder; wherein the trackside electronic unit includes a signal transmission module and a status monitoring module, and the transponder includes a signal demodulation unit and a signal generating unit; specifically, the signal transmission module is used to send a message signal to the signal demodulation module, and after receiving the message signal, the signal demodulation module will demodulate the received message signal to obtain a first demodulated signal, and send the first demodulated signal to the signal generating unit. After receiving the first demodulated signal, the signal generating module will generate a status transmission signal for characterizing the operation status of the transponder according to the first demodulated signal, and send the status transmission signal to the status monitoring module. Finally, the status monitoring module will monitor the operation status of the transponder according to the specific status transmission signal obtained. Through the above-mentioned transponder operation status monitoring system, when the trackside electronic unit sends message information to the transponder, a status transmission signal for characterizing the working status of the transponder can be generated through the sent message information, and finally the operation status monitoring of the transponder can be completed by analyzing it through the status monitoring module in the trackside electronic unit. The entire transponder monitoring process occurs during the actual vehicle-ground communication process, and the status monitoring of the transponder can be realized without simulating the reading and writing functions of the vehicle-mounted antenna, so that the transponder will not be accidentally started, thereby ensuring the safety of the transponder operation status monitoring.

[0077] An information recording device provided in an embodiment of the present application is introduced below. The information recording device described below and the information recording method described above can refer to each other.

[0078] Method Embodiment

[0079] Reference Figure 3 , which is a flow chart of a transponder operating status monitoring method provided in an embodiment of the present application, and specifically includes the following steps:

[0080] S101: Obtaining a message signal from a trackside electronic unit;

[0081] S102: demodulating the message signal to obtain a first demodulated signal;

[0082] S103: generating a state transmission signal according to the first demodulated signal; the state transmission signal is used to represent the operating state of the transponder;

[0083] S104: Monitoring the operating status of the transponder according to the status transmission signal.

[0084] Optionally, the transponder includes: a passive control circuit; and generating a state transmission signal according to the first demodulated signal specifically includes:

[0085] Decomposing the first demodulated signal based on a preset decomposition ratio to obtain a second demodulated signal and a third demodulated signal;

[0086] Performing signal conversion on the second demodulated signal to obtain a passive circuit control signal;

[0087] The state transmission signal is generated according to the passive circuit control signal and the third demodulated signal.

[0088] Optionally, before monitoring the operating status of the transponder according to the status transmission signal, the method further includes:

[0089] The state transmission signal is subjected to signal filtering processing to obtain a filtered state transmission signal.

[0090] Optionally, the monitoring the operating status of the transponder according to the status transmission signal specifically includes:

[0091] According to the status transmission signal, it is determined whether the status transmission signal satisfies a preset signal condition. If the status transmission signal satisfies the preset signal condition, it indicates that the operating state of the transponder is normal.

[0092] Optionally, before demodulating the message signal to obtain the first demodulated signal, the method further includes:

[0093] The message signal is filtered to obtain a filtered message signal.

[0094] It should be noted that the various embodiments in this specification are described in a progressive manner, and the same and similar parts between the various embodiments can refer to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the method device, electronic device and vehicle, since they are basically similar to the method embodiment, the description is relatively simple, and the relevant parts can refer to the partial description of the method embodiment. The method device, electronic device and vehicle described above are merely schematic, in which the units described as separate components may or may not be physically separated, and the components indicated as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0095] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A transponder operation status monitoring system, characterized in that: include: Wayside electronic units and transponders; The trackside electronic unit includes: a signal transmission module and a status monitoring module; the transponder includes: a signal demodulation unit and a signal generation unit; The signal transmission module is used to send a message signal to the signal demodulation unit; The signal demodulation unit is used to perform signal demodulation on the message signal to obtain a first demodulation signal, and send the first demodulation signal to the signal generation unit; The signal generating unit is used to generate a state transmission signal according to the first demodulated signal, and send the state transmission signal to the state monitoring module; the state transmission signal is used to represent the operating state of the transponder; The status monitoring module is used to monitor the operating status of the transponder according to the status transmission signal.

2. The system according to claim 1, characterized in that The signal generating unit comprises: an active circuit module and a passive circuit module; the passive circuit module comprises a passive control circuit; The active circuit module is used to perform signal decomposition on the first demodulated signal based on a preset decomposition ratio to obtain a second demodulated signal and a third demodulated signal, and send the second demodulated signal to the passive circuit module; The passive circuit module is used to receive the second demodulated signal, perform signal conversion on the second demodulated signal to obtain a passive circuit control signal, and send the passive circuit control signal to the active circuit module; The active circuit module is further used to receive the passive circuit control signal, and generate the state transmission signal according to the third demodulated signal and the passive circuit control signal.

3. The system according to claim 1, characterized in that Also includes: Filters; The filter comprises: a first filter module; The first filtering module is used to perform signal filtering processing on the state transmission signal when the state transmission signal is transmitted to the state monitoring module to obtain a state transmission signal after filtering processing.

4. The system according to claim 1, characterized in that The state monitoring module is specifically used for: According to the status transmission signal, it is determined whether the status transmission signal satisfies a preset signal condition. If the status transmission signal satisfies the preset signal condition, it indicates that the operating state of the transponder is normal.

5. The system according to claim 3, characterized in that The filter further comprises: a second filter module; The second filtering module is used to perform signal filtering processing on the message signal when the message signal is transmitted to the signal demodulation unit to obtain a message signal after filtering processing.

6. A method for monitoring the operating status of a transponder, characterized in that: include: Obtain message signals from the trackside electronic unit; Performing signal demodulation on the message signal to obtain a first demodulated signal; generating a state transmission signal according to the first demodulated signal; The state transmission signal is used to characterize the operating state of the transponder; The operating status of the transponder is monitored according to the status transmission signal.

7. The method according to claim 6, characterized in that The transponder comprises: a passive control circuit; and generating a state transmission signal according to the first demodulated signal, specifically comprising: Decomposing the first demodulated signal based on a preset decomposition ratio to obtain a second demodulated signal and a third demodulated signal; Performing signal conversion on the second demodulated signal to obtain a passive circuit control signal; The state transmission signal is generated according to the passive circuit control signal and the third demodulated signal.

8. The method according to claim 6, characterized in that Before monitoring the operating status of the transponder according to the status transmission signal, the method further comprises: The state transmission signal is subjected to signal filtering processing to obtain a filtered state transmission signal.

9. The method according to claim 6, characterized in that The monitoring of the operating status of the transponder according to the status transmission signal specifically includes: According to the status transmission signal, it is determined whether the status transmission signal satisfies a preset signal condition. If the status transmission signal satisfies the preset signal condition, it indicates that the operating state of the transponder is normal.

10. The method according to claim 6, characterized in that Before demodulating the message signal to obtain the first demodulated signal, the method further includes: The message signal is filtered to obtain a filtered message signal.

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