Track circuit receiver, track circuit detection method and device

Abstract

The present invention provides a track circuit receiver, a detection method and device for a track circuit, relating to the technical field of railways. The track circuit receiver includes a first processor, a second processor, a first acquisition circuit and a second acquisition circuit; a first impedance matching module is configured to send a first voltage signal obtained by converting the voltage signal of a self-check power supply to the first processor; a second impedance matching module is configured to send a second voltage signal obtained by converting the voltage signal of the self-check power supply to the second processor; a target processor is configured to perform self-check on the track circuit based on the first voltage signal and the second voltage signal. The present invention collects the voltage signal of the self-check power supply through different first and second impedance matching modules, and then performs self-check on the track circuit based on the collected first and second voltage signals, which can adapt to different types of track circuits, thereby improving the versatility of the track circuit receiver.

Description

Technical Field

[0001] The present invention relates to the technical field of railways, and particularly to a track circuit receiver, a detection method and device for a track circuit. Background Art

[0002] A track circuit receiver, as an important device in a track circuit system, is responsible for detecting track occupancy. When the track is occupied by a train, subsequent trains cannot enter this section to ensure the safety of train operation. In a full electronic interlocking system, microelectronic technology is used to replace safety relays as track circuit receivers. Because it is closely related to train operation safety, the full electronic track circuit receiver should have a safety level of SIL-4. And there are various types of track circuits, including AC continuous track circuits, 25Hz phase-sensitive track circuits, 50Hz phase-sensitive track circuits, etc.

[0003] In related technologies, for various types of track circuits, corresponding track circuit receivers need to be designed separately, and the unification of track circuit receivers cannot be achieved, thus reducing the versatility of track circuit receivers. Summary of the Invention

[0004] The present invention provides a track circuit receiver, a detection method and device for a track circuit to solve the defect of reducing the versatility of track circuit receivers in the prior art.

[0005] The present invention provides a track circuit receiver, including a first processor, a second processor, a first acquisition circuit and a second acquisition circuit; the first acquisition circuit includes a first impedance matching module and a first voltage acquisition module, the second acquisition circuit includes a second impedance matching module and a second voltage acquisition module, the input ends of the first impedance matching module and the second impedance matching module are both connected to a self-checking power supply, the output end of the first impedance matching module is connected to the first processor through the first voltage acquisition module, and the output end of the second impedance matching module is connected to the second processor through the second voltage acquisition module; the first impedance matching module is different from the second impedance matching module;

[0006] The first impedance matching module is configured to convert the voltage signal of the self-checking power supply, and send the first voltage signal obtained after conversion to the first processor through the first voltage acquisition module;

[0007] The second impedance matching module is configured to convert the voltage signal of the self-checking power supply, and send the second voltage signal obtained after conversion to the second processor through the second voltage acquisition module;

[0008] A target processor, configured to perform self-check on a track circuit based on the first voltage signal and the second voltage signal, where the target processor includes the first processor or the second processor.

[0009] According to a track circuit receiver provided by the present invention, the first impedance matching module includes a first capacitor, a first resistor, and a second resistor. The first end of the first capacitor and the first end of the first resistor are both connected to the self-check power supply. The second end of the first capacitor is connected to the first voltage acquisition module through the second resistor, and the second end of the first resistor is connected to the first voltage acquisition module.

[0010] According to a track circuit receiver provided by the present invention, the second impedance matching module includes a second capacitor, a third resistor, and a fourth resistor. The first end of the third resistor and the first end of the fourth resistor are both connected to the self-check power supply. The second end of the third resistor is respectively connected to the first end of the second capacitor and the second voltage acquisition module, and the second end of the fourth resistor is respectively connected to the second end of the second capacitor and the second voltage acquisition module; the difference between the phase of the voltage output by the first impedance matching module and the phase of the voltage output by the second impedance matching module is a first preset value.

[0011] According to a track circuit receiver provided by the present invention, the first acquisition circuit further includes a third impedance matching module, and the second acquisition circuit includes a fourth impedance matching module. The input end of the third impedance matching module is respectively connected to the first track power supply and the output end of the first impedance matching module, and the output end of the third impedance matching module is connected to the first voltage acquisition module; the input end of the fourth impedance matching module is respectively connected to the first track power supply and the output end of the second impedance matching module, and the output end of the fourth impedance matching module is connected to the second voltage acquisition module;

[0012] The sum of the impedance value of the first impedance matching module and the impedance value of the third impedance matching module is a first preset impedance value, and the sum of the impedance value of the second impedance matching module and the impedance value of the fourth impedance matching module is a second preset impedance value.

[0013] According to a track circuit receiver provided by the present invention, the target processor is specifically configured to determine that the self-check of the first track power supply passes when it is determined that the ratio of the amplitude of the first voltage signal to the amplitude of the second voltage signal is the second preset value and the difference between the phase of the first voltage signal and the phase of the second voltage signal is the first preset value; the second preset value is the ratio of the second preset impedance value to the first preset impedance value.

[0014] According to a track circuit receiver provided by the present invention, the first acquisition circuit further includes a first switch and a second switch, and the second acquisition circuit further includes a third switch and a fourth switch. The output end of the first impedance matching module is connected to the input end of the third impedance matching module through the first switch, and the first track power supply is connected to the input end of the third impedance matching module through the second switch; the output end of the second impedance matching module is connected to the input end of the fourth impedance matching module through the third switch, and the first track power supply is connected to the input end of the fourth impedance matching module through the fourth switch;

[0015] The target processor is further configured to control the first switch and the third switch to close and control the second switch and the fourth switch to open when the acquisition circuit for acquiring the voltage signal of the self-check power supply is operating normally.

[0016] According to a track circuit receiver provided by the present invention, the target processor is further configured to control the second switch and the fourth switch to close and control the first switch and the third switch to open when the first track power supply passes the self-check;

[0017] The third impedance matching module is configured to convert the voltage signal of the first track power supply and send the obtained third voltage signal to the first processor through the first voltage acquisition module;

[0018] The fourth impedance matching module is configured to convert the voltage signal of the first track power supply and send the obtained fourth voltage signal to the second processor through the second voltage acquisition module;

[0019] The target processor is further configured to determine the track state based on the amplitude of the third voltage signal and the amplitude of the fourth voltage signal when the track circuit includes an AC continuous track circuit;

[0020] The target processor is further configured to determine the track state based on the amplitude of the third voltage signal and the amplitude of the fourth voltage signal, the phase of the third voltage signal and the phase of the fourth voltage signal, and the phase difference between the phase of the voltage signal of the first track power supply and the phase of the voltage signal of the self-check power supply when the track circuit includes a phase-sensitive track circuit.

[0021] According to an orbit circuit receiver provided by the present invention, it further includes a third acquisition circuit and a fourth acquisition circuit. The third acquisition circuit has the same structure as the first acquisition circuit, and the fourth acquisition circuit has the same structure as the second acquisition circuit. The input ends of the third acquisition circuit and the fourth acquisition circuit are both connected to a second track power supply. The output end of the third acquisition circuit is connected to the first processor, and the output end of the fourth acquisition circuit is connected to the second processor.

[0022] According to an orbit circuit receiver provided by the present invention, in the case where the orbit circuit includes an AC continuous orbit circuit, the self-checking power supply is an external power supply; in the case where the orbit circuit includes a phase-sensitive orbit circuit, the self-checking power supply is the local power supply of the phase-sensitive orbit circuit.

[0023] The present invention also provides a detection method for an orbit circuit, which is applied to the orbit circuit receiver according to any one of the above embodiments. The method includes:

[0024] Receiving a first voltage signal sent by a first voltage acquisition module and a second voltage signal sent by a second voltage acquisition module. The first voltage signal is obtained by converting the voltage signal of the self-checking power supply by a first impedance matching module, and the second voltage signal is obtained by converting the voltage signal of the self-checking power supply by a second impedance matching module;

[0025] Based on the first voltage signal and the second voltage signal, performing self-checking on the orbit circuit.

[0026] The present invention also provides a detection device for an orbit circuit, including:

[0027] A receiving unit, configured to receive a first voltage signal sent by a first voltage acquisition module and a second voltage signal sent by a second voltage acquisition module. The first voltage signal is obtained by converting the voltage signal of the self-checking power supply by a first impedance matching module, and the second voltage signal is obtained by converting the voltage signal of the self-checking power supply by a second impedance matching module;

[0028] A self-checking unit, configured to perform self-checking on the orbit circuit based on the first voltage signal and the second voltage signal.

[0029] The present invention also provides an orbit circuit receiver, including a memory, a processor, and a computer program stored on the memory and executable on the processor. When the processor executes the computer program, it implements the detection method for the orbit circuit as described in any one of the above.

[0030] The present invention also provides a non-transitory computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the detection method of the track circuit as described in any one of the above is implemented.

[0031] The present invention also provides a computer program product, including a computer program. When the computer program is executed by a processor, the detection method of the track circuit as described in any one of the above is implemented.

[0032] The track circuit receiver, the detection method and device of the track circuit provided by the present invention. The track circuit receiver includes a first processor, a second processor, a first acquisition circuit and a second acquisition circuit. The first acquisition circuit includes a first impedance matching module and a first voltage acquisition module, and the second acquisition circuit includes a second impedance matching module and a second voltage acquisition module. The first voltage signal obtained by converting the voltage signal of the self-checking power supply by the first impedance matching module is sent to the first processor through the first voltage acquisition module. The second voltage signal obtained by converting the voltage signal of the self-checking power supply by the second impedance matching module is sent to the second processor through the second voltage acquisition module. The first processor or the second processor performs self-checking on the track circuit based on the first voltage signal and the second voltage signal. It can be seen that the track circuit receiver of the present invention collects the voltage signals of the self-checking power supply through different first impedance matching modules and second impedance matching modules, and then performs self-checking on the track circuit based on the collected first voltage signal and second voltage signal. The settings of the first impedance matching module and the second impedance matching module have nothing to do with the type of the track circuit. Therefore, it can adapt to different types of track circuits, thereby improving the versatility of the track circuit receiver. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0034] Figure 1 is one of the schematic diagrams of the principle of the track circuit receiver provided by the embodiment of the present invention.

[0035] Figure 2 is the circuit schematic diagram of the first impedance matching module provided by the embodiment of the present invention.

[0036] Figure 3 is the circuit schematic diagram of the second impedance matching module provided by the embodiment of the present invention.

[0037] Figure 4 is the second schematic diagram of the principle of the track circuit receiver provided by the embodiment of the present invention.

[0038] Figure 5 It is the third schematic diagram of the principle of the track circuit receiver provided by the embodiments of the present invention.

[0039] Figure 6 It is the overall schematic diagram of the principle of the track circuit receiver provided by the embodiments of the present invention.

[0040] Figure 7 It is the schematic flowchart of the detection method for the AC continuous track circuit provided by the embodiments of the present invention.

[0041] Figure 8 It is the schematic flowchart of the detection method for the phase-sensitive track circuit provided by the embodiments of the present invention.

[0042] Figure 9 It is the schematic structural diagram of the detection device for the track circuit provided by the embodiments of the present invention.

[0043] Figure 10 It is the schematic diagram of the physical structure of the track circuit receiver provided by the embodiments of the present invention. Detailed implementation manners

[0044] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the present invention will be clearly and completely described below with reference to the accompanying drawings in the present invention. Apparently, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present invention without creative efforts shall fall within the protection scope of the present invention.

[0045] Figure 1 It is one of the schematic diagrams of the principle of the track circuit receiver provided by the embodiments of the present invention. As Figure 1 shown, the track circuit receiver includes a first processor, a second processor, a first acquisition circuit and a second acquisition circuit; the first acquisition circuit includes a first impedance matching module and a first voltage acquisition module, the second acquisition circuit includes a second impedance matching module and a second voltage acquisition module, the input ends of the first impedance matching module and the second impedance matching module are both connected to a self-checking power supply, the output end of the first impedance matching module is connected to the first processor through the first voltage acquisition module, and the output end of the second impedance matching module is connected to the second processor through the second voltage acquisition module; the first impedance matching module is different from the second impedance matching module.

[0046] The first impedance matching module is configured to convert the voltage signal of the self-checking power supply and send the obtained first voltage signal to the first processor through the first voltage acquisition module.

[0047] The second impedance matching module is configured to convert the voltage signal of the self-checking power supply, and send the obtained second voltage signal to the second processor through the second voltage acquisition module.

[0048] The target processor is configured to perform self-check on the track circuit based on the first voltage signal and the second voltage signal. The target processor includes the first processor or the second processor.

[0049] Wherein, the self-checking power supply outputs an AC signal of 110V and 50Hz.

[0050] Exemplarily, since the voltage of the self-checking power supply is higher than that of the track power supply, an impedance matching module is required to enable the self-checking power supply to be connected to the first acquisition circuit and the second acquisition circuit, preventing the first acquisition circuit and the second acquisition circuit from being damaged. When designing the first impedance matching module and the second impedance matching module, the first impedance matching module is equivalent to a high-pass filter, such that the phase at the input end of the first impedance matching module lags behind the phase at the output end of the first impedance matching module by 90 degrees, and the second impedance matching module is equivalent to a low-pass filter, such that the phase at the input end of the second impedance matching module leads the phase at the output end of the second impedance matching module by 90 degrees. The first impedance matching module converts the voltage signal output by the self-checking power supply to obtain a first voltage signal, and sends the first voltage signal to the first processor through the first voltage acquisition module; the second impedance matching module converts the voltage signal output by the self-checking power supply to obtain a second voltage signal, and sends the second voltage signal to the second processor through the second voltage acquisition module. Data communication can be performed between the first processor and the second processor. Therefore, the second processor can send the received second voltage signal to the first processor, taking the first processor as the target processor, and the first processor can also send the received first voltage signal to the second processor, taking the second processor as the target processor. The target processor determines whether the difference between the first voltage signal and the second voltage signal matches the design difference between the first impedance matching module and the second impedance matching module. When it is determined that the difference between the first voltage signal and the second voltage signal matches the design difference between the first impedance matching module and the second impedance matching module, it is determined that the self-check of the track circuit passes; when it is determined that the difference between the first voltage signal and the second voltage signal does not match the design difference between the first impedance matching module and the second impedance matching module, it is determined that the self-check of the track circuit fails.

[0051] It should be noted that the processor, acquisition circuit, etc. of the present invention are all two-system processing, adopting a two-by-two redundant architecture, which can further ensure that the track circuit receiver can reach the safety level of SIL-4.

[0052] The track circuit receiver provided by the present invention includes a first processor, a second processor, a first acquisition circuit, and a second acquisition circuit. The first acquisition circuit includes a first impedance matching module and a first voltage acquisition module, and the second acquisition circuit includes a second impedance matching module and a second voltage acquisition module. The first impedance matching module converts the voltage signal of the self-checking power supply and sends the obtained first voltage signal to the first processor through the first voltage acquisition module. The second impedance matching module converts the voltage signal of the self-checking power supply and sends the obtained second voltage signal to the second processor through the second voltage acquisition module. The first processor or the second processor performs self-checking on the track circuit based on the first voltage signal and the second voltage signal. It can be seen that the track circuit receiver of the present invention collects the voltage signal of the self-checking power supply through different first impedance matching module and second impedance matching module, and then performs self-checking on the track circuit based on the collected first voltage signal and second voltage signal. The settings of the first impedance matching module and the second impedance matching module have nothing to do with the type of the track circuit, so it can adapt to different types of track circuits, thereby improving the versatility of the track circuit receiver.

[0053] In one embodiment, Figure 2 is a circuit schematic diagram of the first impedance matching module provided by an embodiment of the present invention, as Figure 2 shown, the first impedance matching module includes a first capacitor C1, a first resistor R1, and a second resistor R2. The first end of the first capacitor C1 and the first end of the first resistor R1 are both connected to the self-checking power supply. The second end of the first capacitor C1 is connected to the first voltage acquisition module through the second resistor R2, and the second end of the first resistor R1 is connected to the first voltage acquisition module.

[0054] Exemplarily, Figure 2 the first impedance matching module shown is equivalent to a high-pass filter, so that the phase at the input end of the first impedance matching module lags behind the phase at the output end of the first impedance matching module by 90 degrees.

[0055] In this embodiment, it is designed that the phase at the input end of the first impedance matching module lags behind the phase at the output end of the first impedance matching module by 90 degrees, which is convenient for cooperating with the second impedance matching module to adjust the phase of the voltage signal output by the self-checking power supply, achieving a heterogeneous effect and improving the safety of the track circuit receiver.

[0056] In one embodiment, Figure 3 is a circuit schematic diagram of the second impedance matching module provided by an embodiment of the present invention, as Figure 3As shown, the second impedance matching module includes a second capacitor C2, a third resistor R3, and a fourth resistor R4. The first ends of the third resistor R3 and the fourth resistor R4 are both connected to the self-checking power supply. The second end of the third resistor R3 is respectively connected to the first end of the second capacitor C2 and the second voltage acquisition module. The second end of the fourth resistor R4 is respectively connected to the second end of the second capacitor C2 and the second voltage acquisition module. The difference in phase between the voltage output by the first impedance matching module and the voltage output by the second impedance matching module is a first preset value.

[0057] Exemplarily, the second impedance matching module is equivalent to a low-pass filter, such that the phase at the input end of the second impedance matching module leads the phase at the output end of the second impedance matching module by 90 degrees. In this way, the difference in phase between the second voltage signal received by the first processor and the second processor and the first voltage signal is 180 degrees, achieving the effect of heterogeneity due to the difference in phase and avoiding common-cause failures.

[0058] In this embodiment, it is designed that the phase at the input end of the second impedance matching module leads the phase at the output end of the second impedance matching module by 90 degrees, which is convenient for cooperating with the first impedance matching module to adjust the phase of the voltage signal output by the self-checking power supply, achieving the effect of heterogeneity, improving the safety of the track circuit receiver, and avoiding common-cause failures.

[0059] In one embodiment, Figure 4 is the second schematic diagram of the principle of the track circuit receiver provided by the embodiment of the present invention. As Figure 4 shown, the first acquisition circuit further includes a third impedance matching module, and the second acquisition circuit includes a fourth impedance matching module. The input end of the third impedance matching module is respectively connected to the first track power supply and the output end of the first impedance matching module, and the output end of the third impedance matching module is connected to the first voltage acquisition module. The input end of the fourth impedance matching module is respectively connected to the first track power supply and the output end of the second impedance matching module, and the output end of the fourth impedance matching module is connected to the second voltage acquisition module.

[0060] The sum of the impedance value of the first impedance matching module and the impedance value of the third impedance matching module is a first preset impedance value, and the sum of the impedance value of the second impedance matching module and the impedance value of the fourth impedance matching module is a second preset impedance value.

[0061] Exemplarily, the third impedance matching module and the fourth impedance matching module provide impedance for the 25 Hz phase-sensitive track circuit and the 50 Hz phase-sensitive track circuit, and also provide matching impedance for the AC continuous track circuit. The third impedance matching module and the fourth impedance matching module need to set the impedance value according to the actual track circuit; it is designed that the sum of the impedance value of the first impedance matching module and the impedance value of the third impedance matching module is the first preset impedance value. For example, the first preset impedance value is 45 kΩ; it is designed that the sum of the impedance value of the second impedance matching module and the impedance value of the fourth impedance matching module is the second preset impedance value. For example, the second preset impedance value is 60 kΩ. In this way, the ratio of the amplitude of the first voltage signal received by the first processor to the amplitude of the second voltage signal received by the second processor is the second preset value, and the second preset value is the ratio of the second preset impedance value to the first preset impedance value. When the first preset impedance value is 45 kΩ and the second preset impedance value is 60 kΩ, the second preset value is approximately equal to 1.33. The difference in amplitude achieves the effect of heterogeneity, further avoiding common cause failure.

[0062] In one embodiment, the target processor is specifically configured to determine that the self-check of the first track power supply passes when it is determined that the ratio of the amplitude of the first voltage signal to the amplitude of the second voltage signal is the second preset value and the difference between the phase of the first voltage signal and the phase of the second voltage signal is the first preset value, and the second preset value is the ratio of the second preset impedance value to the first preset impedance value.

[0063] Exemplarily, when the track circuit is an AC continuous track circuit, a 25 Hz phase-sensitive track circuit or a 50 Hz phase-sensitive track circuit, when the target processor receives the first voltage signal and the second voltage signal, it analyzes the amplitude of the first voltage signal and the amplitude of the second voltage signal, and analyzes the phase of the first voltage signal and the phase of the second voltage signal. When it is determined that the ratio of the amplitude of the second voltage signal to the amplitude of the first voltage signal is the second preset value and the difference between the phase of the first voltage signal and the phase of the second voltage signal is the first preset value, it is determined that the self-check of the first track power supply passes. That is to say, the first track voltage works normally, and the self-check of the track power supply is realized.

[0064] It should be noted that when the track circuit is an AC continuous track circuit, a 25 Hz phase-sensitive track circuit or a 50 Hz phase-sensitive track circuit, it is determined that the self-check of the first track power supply passes only when it is determined that the ratio of the amplitude of the second voltage signal to the amplitude of the first voltage signal is the second preset value, the difference between the phase of the first voltage signal and the phase of the second voltage signal is the first preset value, and the frequencies of the second voltage signal and the first voltage signal are the same as the frequency of the voltage signal output by the self-check power supply, further improving the accuracy of the track circuit self-check.

[0065] In this embodiment, self-check is realized by the difference between the phase of the first voltage signal and the phase of the second voltage signal and the ratio of the amplitude of the second voltage signal to the amplitude of the first voltage signal, improving the accuracy of self-check.

[0066] In one embodiment, Figure 5 is the third schematic diagram of the principle of the track circuit receiver provided by the embodiment of the present invention. As Figure 5 shown, the first acquisition circuit further includes a first switch and a second switch, and the second acquisition circuit further includes a third switch and a fourth switch. The output end of the first impedance matching module is connected to the input end of the third impedance matching module through the first switch, and the first track power supply is connected to the input end of the third impedance matching module through the second switch; the output end of the second impedance matching module is connected to the input end of the fourth impedance matching module through the third switch, and the first track power supply is connected to the input end of the fourth impedance matching module through the fourth switch.

[0067] The target processor is further configured to control the first switch and the third switch to close and control the second switch and the fourth switch to open when the acquisition circuit for acquiring the voltage signal of the self-check power supply is operating normally.

[0068] Among them, the first switch, the second switch, the third switch and the fourth switch can all be relays or other switches. When they are relays, it is preferably to use forced-guided safety relays.

[0069] Exemplarily, the acquisition circuit for acquiring the voltage signal of the self-check power supply may include a fifth acquisition circuit and a sixth acquisition circuit. The fifth acquisition circuit is connected between the self-check power supply and the first processor, and the sixth acquisition circuit is connected between the self-check power supply and the second processor. The voltage signal of the self-check power supply is acquired through the fifth acquisition circuit, and the acquired voltage signal of the self-check power supply is sent to the first processor. The voltage signal of the self-check power supply is acquired through the sixth acquisition circuit, and the acquired voltage signal of the self-check power supply is sent to the second processor. When the amplitude and frequency of the voltage signal of the self-check power supply received by the second processor are the same as those of the voltage signal of the self-check power supply received by the first processor, it is determined that the acquisition circuit for acquiring the voltage signal of the self-check power supply is operating normally. At this time, the first switch and the third switch are controlled to close to connect the self-check power supply to the first acquisition circuit and the second acquisition circuit to realize the self-check of the track circuit; and the second switch and the fourth switch are controlled to open to disconnect the connection between the first track power supply and the first acquisition circuit and the second acquisition circuit.

[0070] In this embodiment, through the control of the first switch, the second switch, the third switch and the fourth switch, the automatic execution of the self-check process is realized, improving the efficiency of self-check.

[0071] In one embodiment, the target processor is further configured to control the second switch and the fourth switch to close and control the first switch and the third switch to open when the self-check of the first track power supply passes.

[0072] The third impedance matching module is configured to convert the voltage signal of the first track power supply and send the obtained third voltage signal to the first processor through the first voltage acquisition module.

[0073] The fourth impedance matching module is configured to convert the voltage signal of the first track power supply and send the obtained fourth voltage signal to the second processor through the second voltage acquisition module.

[0074] The target processor is further configured to determine the track state based on the amplitudes of the third voltage signal and the fourth voltage signal when the track circuit includes an AC continuous track circuit.

[0075] The target processor is further configured to determine the track state based on the amplitudes of the third voltage signal and the fourth voltage signal, the phase difference between the phases of the third voltage signal and the fourth voltage signal, and the phase difference between the phase of the voltage signal of the first track power supply and the phase of the voltage signal of the self-check power supply when the track circuit includes a phase-sensitive track circuit.

[0076] Exemplarily, when the self-check of the first track power supply passes, the target processor controls the second switch and the fourth switch to close and controls the first switch and the third switch to open, so that the first track power supply is connected to the first acquisition circuit and the second acquisition circuit. The third impedance matching module in the first acquisition circuit converts the voltage signal of the first track power supply to obtain a third voltage signal, and sends the third voltage signal to the first processor through the first voltage acquisition module. The fourth impedance matching module in the second acquisition circuit converts the voltage signal of the first track power supply to obtain a fourth voltage signal, and sends the fourth voltage signal to the second processor through the second voltage acquisition module. Data communication can be performed between the second processor and the first processor. Therefore, the first processor or the second processor is used as the target processor, and the target processor can obtain the third voltage signal and the fourth voltage signal.

[0077] When the track circuit includes an AC continuous track circuit, when it is determined that the third voltage signal and the fourth voltage signal are the same, it indicates that the acquisition is normal. Then, based on the analysis of the amplitude and frequency of the third voltage signal or the amplitude and frequency of the fourth voltage signal, the track state is determined. The track state includes the track occupied state or the track idle state. The specific method for determining the track state based on the analysis of the amplitude and frequency of the third voltage signal or the amplitude and frequency of the fourth voltage signal can refer to the related technology, and the present invention will not elaborate here.

[0078] When the track circuit includes a 25 Hz phase-sensitive track circuit or a 50 Hz phase-sensitive track circuit, when it is determined that the third voltage signal and the fourth voltage signal are the same, and the voltage signal of the self-checking power supply collected by the fifth acquisition circuit and the voltage signal of the self-checking power supply collected by the sixth acquisition circuit are the same, it indicates that all acquisitions are normal. Therefore, the track state can be determined based on the third voltage signal and the voltage signal of the self-checking power supply collected by the fifth acquisition circuit, or the track state can be determined based on the fourth voltage signal and the voltage signal of the self-checking power supply collected by the sixth acquisition circuit. Taking the third voltage signal and the voltage signal of the self-checking power supply collected by the fifth acquisition circuit as an example, the amplitude, phase and frequency of the third voltage signal are analyzed, and the phase difference between the phase of the third voltage signal and the phase of the voltage signal of the self-checking power supply collected by the fifth acquisition circuit is analyzed to determine the track state. The track state includes the track occupied state or the track idle state. The specific method for determining the track state based on the analysis of the amplitude, phase and frequency of the third voltage signal, and the phase difference between the phase of the third voltage signal and the phase of the voltage signal of the self-checking power supply collected by the fifth acquisition circuit can refer to the related technology, and the present invention will not elaborate here.

[0079] In this embodiment, by controlling the first switch, the second switch, the third switch and the fourth switch, the automatic judgment of the track state is realized, which improves the judgment efficiency of the track state. In addition, the present invention realizes the automatic judgment of the track state based on the voltage signal of the first track power supply only when it is ensured that the self-check of the first track power supply passes, which can avoid the error caused by the failure of the first track power supply itself, thereby improving the accuracy of the track state judgment.

[0080] In one embodiment, the track circuit receiver further includes a third acquisition circuit and a fourth acquisition circuit. The structure of the third acquisition circuit is the same as that of the first acquisition circuit, and the structure of the fourth acquisition circuit is the same as that of the second acquisition circuit. The input ends of the third acquisition circuit and the fourth acquisition circuit are both connected to the second track power supply. The output end of the third acquisition circuit is connected to the first processor, and the output end of the fourth acquisition circuit is connected to the second processor.

[0081] Exemplarily, the present invention further includes a third acquisition circuit having the same structure as the first acquisition circuit, and a fourth acquisition circuit having the same structure as the second acquisition circuit. The self-check of the second track power supply can be realized through the third acquisition circuit and the fourth acquisition circuit, so that the track circuit receiver can simultaneously perform self-check on two track power supplies. The self-check process of the second track power supply by the third acquisition circuit and the fourth acquisition circuit can refer to the self-check process of the first track power supply by the first acquisition circuit and the second acquisition circuit, and the present invention will not elaborate herein.

[0082] In one embodiment, when the track circuit includes an AC continuous track circuit, the self-check power supply is an external power supply; when the track circuit includes a phase-sensitive track circuit, the self-check power supply is the local power supply of the phase-sensitive track circuit.

[0083] Exemplarily, when the track circuit includes an AC continuous track circuit, since the AC continuous track circuit only has a track power supply and no local power supply, when detecting the AC continuous track circuit, the self-check power supply is an external power supply, and this external power supply can be an AC power supply of 110V and 50Hz. When the track circuit includes a 25Hz phase-sensitive track circuit or a 50Hz phase-sensitive track circuit, since the 25Hz phase-sensitive track circuit and the 50Hz phase-sensitive track circuit have both a track power supply and a local power supply, the local power supply can be directly used as the self-check power supply without an additional self-check power supply.

[0084] In this embodiment, when the track circuit includes an AC continuous track circuit, it is necessary to connect an external power supply as the self-check power supply. When the track circuit includes a phase-sensitive track circuit, the local power supply of the phase-sensitive track circuit is used as the self-check power supply of the track power supply, which simplifies the circuit and reduces the difficulty of engineering application.

[0085] Figure 6 is the overall principle schematic diagram of the track circuit receiver provided by the embodiment of the present invention, as Figure 6 shown, the track circuit receiver includes a first processor, a second processor, a first acquisition circuit, a second acquisition circuit, a third acquisition circuit, a fourth acquisition circuit, a fifth acquisition circuit, and a sixth acquisition circuit. Among them, a first synchronous acquisition module can be integrated in the first processor, and a second synchronous acquisition module can be integrated in the second processor. The first acquisition circuit includes a first impedance matching module 1, a third impedance matching module 1, a first switch 1, a second switch 1, and a first voltage acquisition module 1. The first voltage acquisition module 1 includes a connected first voltage transformer 1 and a first signal conditioning module 1; the second acquisition circuit includes a second impedance matching module 1, a fourth impedance matching module 1, a third switch 1, a fourth switch 1, and a second voltage acquisition module 1. The second voltage acquisition module 1 includes a connected second voltage transformer 1 and a second signal conditioning module 1.

[0086] The third acquisition circuit includes a first impedance matching module 2, a third impedance matching module 2, a first switch 2, a second switch 2, and a first voltage acquisition module 2. The first voltage acquisition module 2 includes a connected first voltage transformer 2 and a first signal conditioning module 2; the fourth acquisition circuit includes a second impedance matching module 2, a fourth impedance matching module 2, a third switch 2, a fourth switch 2, and a second voltage acquisition module 2. The second voltage acquisition module 2 includes a connected second voltage transformer 2 and a second signal conditioning module 2.

[0087] The fifth acquisition circuit includes a fifth switch, a fifth impedance matching module, a third voltage transformer, and a third signal conditioning module connected in sequence. The sixth acquisition circuit includes a sixth switch, a sixth impedance matching module, a fourth voltage transformer, and a fourth signal conditioning module connected in sequence. The input end of the fifth impedance matching module is connected to the self-checking power supply. The output end of the third signal conditioning module is connected to the first processor. The input end of the sixth impedance matching module is connected to the self-checking power supply. The output end of the fourth signal conditioning module is connected to the second processor.

[0088] Among them, since the self-checking power supply outputs an AC signal of 110V and 50Hz, the input impedance of the fifth impedance matching module and the sixth impedance matching module should be 30k ohms. Figure 6 In it, S4 is used to represent the first switch 1, S3 is used to represent the second switch 1, S9 is used to represent the third switch 1, and S8 is used to represent the fourth switch 1; S6 is used to represent the first switch 3, S5 is used to represent the second switch 2, S11 is used to represent the third switch 2, S10 is used to represent the fourth switch 2, S1 is used to represent the fifth switch, and S7 is used to represent the sixth switch. S3 and S4 are a group, S5 and S6 are a group, S8 and S9 are a group, and S10 and S11 are a group, forming a mutually exclusive relationship. Only one of them is in the closed state at any time point, and the other is in the open state. Taking the group of S3 and S4 as an example, under normal conditions, S3 is in the closed state, and the first track power supply is connected to the system to judge the track state. When self-checking, S3 is disconnected and S4 is closed, and the self-checking power supply is connected to the system to realize the self-check of the entire system circuit.

[0089] The above-mentioned voltage transformer is used to convert the external high-voltage signal into a low-voltage signal that can be processed by the internal functional module, and at the same time realizes the isolation between the inside and the outside. The voltage transformer of the present invention can use a 5mA voltage transformer, that is, the maximum value of the external voltage signal is converted into a 5mA current signal through the corresponding impedance matching module and input to the voltage transformer, and the output end of the voltage transformer also outputs a 5mA current signal.

[0090] The above-mentioned signal conditioning module is used to convert the signal output by the voltage transformer into a signal suitable for the range of the synchronous acquisition module, and the synchronous acquisition module is a synchronous acquisition analog-to-digital conversion module. Here, since the front-end impedance matching module, voltage transformer, etc. process different signals input at the front-end into the same signal, all signal conditioning modules are the same.

[0091] The above-mentioned synchronous acquisition module is used to convert analog signals into digital signals. For the 25Hz phase-sensitive track circuit and 50Hz phase-sensitive track circuit, because the phase difference between the first track power supply and the self-check power supply needs to be calculated, it is necessary to ensure that the analog signals are collected simultaneously. Therefore, a synchronous acquisition analog-to-digital conversion module is used here. Using two synchronous acquisition analog-to-digital conversion modules means that each synchronous acquisition analog-to-digital conversion module works independently and sends the data value to the specified target processor.

[0092] The processor is used for data acquisition, processing of the entire track circuit receiver, external output of the track state judgment of the track circuit, result output, etc.; using two processing modules means that the track circuit receiver is two-out-of-two, and there is data communication between the two processors.

[0093] The track circuit receiver provided by the embodiment of the present invention can realize the closed-loop self-check of the entire acquisition circuit, greatly improve the safety of track circuit detection, uses the local power supply of the phase-sensitive track circuit as the self-check power supply, and through the impedance matching module and switch switching, when the circuit is self-checking, the self-check power supply is connected to the corresponding acquisition circuit to realize self-check; when judging the track state, the track power supply is connected to the corresponding acquisition circuit to realize the judgment of the track state, which simplifies the circuit design. When used for 25Hz and 50Hz phase-sensitive track circuits, no additional self-check power supply is required. When used for AC continuous track circuits, an external power supply needs to be additionally introduced as the self-check power supply, but the phase-sensitive track circuit is consistent with the AC continuous track circuit, thus simplifying the circuit design and unifying the usage methods of various track circuit receivers, which is beneficial to engineering applications and daily maintenance.

[0094] The track circuit detection method provided by the embodiment of the present invention includes the following steps:

[0095] Receiving the first voltage signal sent by the first voltage acquisition module and the second voltage signal sent by the second voltage acquisition module, where the first voltage signal is obtained after the first impedance matching module converts the voltage signal of the self-check power supply, and the second voltage signal is obtained after the second impedance matching module converts the voltage signal of the self-check power supply.

[0096] Based on the first voltage signal and the second voltage signal, perform self-check on the track circuit.

[0097] The detection method of the track circuit provided by the embodiment of the present invention is applied to a track circuit receiver that collects the voltage signal of the self-checking power supply through different first impedance matching modules and second impedance matching modules, and then performs self-check on the track circuit based on the collected first voltage signal and second voltage signal. The settings of the first impedance matching module and the second impedance matching module are independent of the type of the track circuit, so it can be adapted to different types of track circuits, thereby improving the versatility of the track circuit receiver.

[0098] In one embodiment, the above-mentioned self-check on the track circuit based on the first voltage signal and the second voltage signal can be specifically implemented in the following manner:

[0099] When it is determined that the ratio of the amplitude of the second voltage signal to the amplitude of the first voltage signal is a second preset value, and it is determined that the difference between the phase of the first voltage signal and the phase of the second voltage signal is a first preset value, it is determined that the self-check of the first track power supply passes; the second preset value is the ratio of the second preset impedance value to the first preset impedance value, the second preset impedance value is the sum of the impedance values of the second impedance matching module and the fourth impedance matching module, and the first preset impedance value is the sum of the impedance values of the first impedance matching module and the third impedance matching module; the first preset value is the difference between the phase of the voltage output by the first impedance matching module and the phase of the voltage output by the second impedance matching module.

[0100] In one embodiment, the detection method of the track circuit further includes the following steps:

[0101] When the self-checking power supply works normally, control the first switch and the third switch to close, and control the second switch and the fourth switch to open.

[0102] In one embodiment, the detection method of the track circuit further includes the following steps:

[0103] When the self-check of the first track power supply passes, control the second switch and the fourth switch to close, and control the first switch and the third switch to open;

[0104] When the track circuit includes an AC continuous track circuit, determine the track state based on the amplitude of the third voltage signal and the amplitude of the fourth voltage signal; the third voltage signal is obtained by the third impedance matching module converting the voltage signal of the first track power supply, and the fourth voltage signal is obtained by the fourth impedance matching module converting the voltage signal of the first track power supply;

[0105] When the track circuit includes a phase-sensitive track circuit, the track state is determined based on the amplitude of the third voltage signal and the amplitude of the fourth voltage signal, and the phase of the third voltage signal and the phase of the fourth voltage signal.

[0106] Figure 7 is a schematic flowchart of a detection method for an AC continuous track circuit provided by an embodiment of the present invention. As Figure 7 shown, the first processor and the second processor respectively collect the voltage signals of the self-checking power supply through the fifth collection circuit and the sixth collection circuit at the same time. When it is determined that at least one of the amplitude and frequency of the voltage signal of the self-checking power supply collected by the first processor is different from the amplitude and frequency of the voltage signal of the self-checking power supply collected by the second processor, it is determined that the collection circuit for collecting the voltage signal of the self-checking power supply is abnormal, and an alarm signal is output; when it is determined that the amplitude and frequency of the voltage signal of the self-checking power supply collected by the first processor are the same as the amplitude and frequency of the voltage signal of the self-checking power supply collected by the second processor, it is determined that the collection circuit for collecting the voltage signal of the self-checking power supply is normal; at this time, the control switch is switched to the self-checking position, and the first processor and the second processor respectively collect the voltage signals of the self-checking power supply through the first collection circuit and the second collection circuit at the same time, and determine the ratio of the amplitude of the second voltage signal and the amplitude of the first voltage signal, the difference between the phase of the second voltage signal and the phase of the first voltage signal, and the frequency of the first voltage signal and the frequency of the second voltage signal. Whether the self-check passes is determined based on the ratio of the amplitudes, the difference in phases, and the frequencies. When the self-check fails, an alarm signal is output.

[0107] When the self-check passes, the control switch is connected to the first track power supply, and the first processor and the second processor respectively collect the voltage signals of the first track power supply through the first collection circuit and the second collection circuit at the same time, and determine the amplitude of the third voltage signal and the amplitude of the fourth voltage signal, and the frequency of the third voltage signal and the frequency of the fourth voltage signal obtained, and determine the track state based on the analysis of the amplitude of the third voltage signal and the amplitude of the fourth voltage signal, and the frequency of the third voltage signal and the frequency of the fourth voltage signal.

[0108] Figure 8 is a schematic flowchart of a detection method for a phase-sensitive track circuit provided by an embodiment of the present invention. As Figure 8As shown, the first processor and the second processor respectively collect the voltage signals of the self-checking power supply through the fifth collection circuit and the sixth collection circuit at the same time. When it is determined that at least one of the amplitude and frequency of the voltage signal of the self-checking power supply collected by the first processor is different from the amplitude and frequency of the voltage signal of the self-checking power supply collected by the second processor, it is determined that the collection circuit for collecting the voltage signal of the self-checking power supply is abnormal, and an alarm signal is output; when it is determined that the amplitude and frequency of the voltage signal of the self-checking power supply collected by the first processor are the same as the amplitude and frequency of the voltage signal of the self-checking power supply collected by the second processor, it is determined that the collection circuit for collecting the voltage signal of the self-checking power supply is normal; at this time, the control switch is switched to the self-check position, and the first processor and the second processor respectively collect the voltage signals of the self-checking power supply through the first collection circuit and the second collection circuit at the same time, determine the ratio of the amplitude of the second voltage signal and the amplitude of the first voltage signal, the difference between the phase of the second voltage signal and the phase of the first voltage signal, and the frequency of the first voltage signal and the frequency of the second voltage signal, and determine whether the self-check passes based on the ratio of the amplitude, the difference in phase, and the frequency. When the self-check fails, an alarm signal is output.

[0109] When the self-check passes, the control switch is connected to the first track power supply, and the first processor and the second processor respectively collect the voltage signals of the first track power supply through the first collection circuit and the second collection circuit at the same time, determine the amplitude of the third voltage signal and the amplitude of the fourth voltage signal, the phase of the third voltage signal and the phase of the fourth voltage signal, the frequency of the third voltage signal and the frequency of the fourth voltage signal, and the phase difference between the voltage signal of the first track power supply and the voltage signal of the self-checking power supply, and determine the track state based on the analysis of the amplitude of the third voltage signal and the amplitude of the fourth voltage signal, the phase of the third voltage signal and the phase of the fourth voltage signal, the frequency of the third voltage signal and the frequency of the fourth voltage signal, and the phase difference.

[0110] The detection device of the track circuit provided by the present invention will be described below. The detection device of the track circuit described below can be mutually referred to the detection method of the track circuit described above.

[0111] Figure 9 is a schematic structural diagram of the detection device of the track circuit provided by the embodiment of the present invention, as Figure 9 shown, the detection device 900 of the track circuit includes a receiving unit 901 and a self-checking unit 902; wherein:

[0112] The receiving unit 901 is configured to receive the first voltage signal sent by the first voltage acquisition module and the second voltage signal sent by the second voltage acquisition module. The first voltage signal is obtained by converting the voltage signal of the self-checking power supply by the first impedance matching module, and the second voltage signal is obtained by converting the voltage signal of the self-checking power supply by the second impedance matching module;

[0113] The self - checking unit 902 is used to perform self - checking on the track circuit based on the first voltage signal and the second voltage signal.

[0114] Based on any of the above embodiments, the self - checking unit 902 is specifically configured to:

[0115] When it is determined that the ratio of the amplitude of the second voltage signal to the amplitude of the first voltage signal is a second preset value and the difference between the phase of the first voltage signal and the phase of the second voltage signal is a first preset value, it is determined that the self - checking of the first track power supply passes; the second preset value is the ratio of the second preset impedance value to the first preset impedance value, the second preset impedance value is the sum of the impedance values of the second impedance matching module and the fourth impedance matching module, and the first preset impedance value is the sum of the impedance values of the first impedance matching module and the third impedance matching module; the first preset value is the difference between the phase of the voltage output by the first impedance matching module and the phase of the voltage output by the second impedance matching module.

[0116] Based on any of the above embodiments, the detection device 900 of the track circuit further includes:

[0117] The first control unit is used to control the first switch and the third switch to close and control the second switch and the fourth switch to open when the self - checking power supply works normally.

[0118] Based on any of the above embodiments, the detection device 900 of the track circuit further includes:

[0119] The second control unit is used to control the second switch and the fourth switch to close and control the first switch and the third switch to open when the self - checking of the first track power supply passes;

[0120] The first determination unit is used to determine the track state based on the amplitude of the third voltage signal and the amplitude of the fourth voltage signal when the track circuit includes an AC continuous - type track circuit; the third voltage signal is obtained by the third impedance matching module converting the voltage signal of the first track power supply, and the fourth voltage signal is obtained by the fourth impedance matching module converting the voltage signal of the first track power supply;

[0121] The second determination unit is used to determine the track state based on the amplitude of the third voltage signal and the amplitude of the fourth voltage signal, and the phase of the third voltage signal and the phase of the fourth voltage signal when the track circuit includes a phase - sensitive track circuit.

[0122] Figure 10It is a schematic diagram of the physical structure of the track circuit receiver provided by an embodiment of the present invention. As Figure 10 shown, the track circuit receiver may include: a processor 1010, a communication interface 1020, a memory 1030, and a communication bus 1040. Among them, the processor 1010, the communication interface 1020, and the memory 1030 complete mutual communication through the communication bus 1040. The processor 1010 can call the logical instructions in the memory 1030 to execute the detection method of the track circuit. The method includes: receiving a first voltage signal sent by a first voltage acquisition module and a second voltage signal sent by a second voltage acquisition module. The first voltage signal is obtained after the first impedance matching module converts the voltage signal of the self-checking power supply, and the second voltage signal is obtained after the second impedance matching module converts the voltage signal of the self-checking power supply;

[0123] Based on the first voltage signal and the second voltage signal, perform self-checking on the track circuit.

[0124] In addition, when the logical instructions in the above-mentioned memory 1030 are implemented in the form of software function units and sold or used as an independent product, they can be stored in a computer-readable storage medium. Based on such an understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or a part of this technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in various embodiments of the present invention. The foregoing storage medium includes: various media such as USB flash drives, mobile hard disks, read-only memories (ROM, Read-Only Memory), random access memories (RAM, Random Access Memory), magnetic disks, or optical discs that can store program codes.

[0125] On the other hand, the present invention also provides a computer program product. The computer program product includes a computer program. The computer program can be stored on a non-transitory computer-readable storage medium. When the computer program is executed by a processor, the computer can execute the detection method of the track circuit provided by the above-mentioned various methods. The method includes: receiving a first voltage signal sent by a first voltage acquisition module and a second voltage signal sent by a second voltage acquisition module. The first voltage signal is obtained after the first impedance matching module converts the voltage signal of the self-checking power supply, and the second voltage signal is obtained after the second impedance matching module converts the voltage signal of the self-checking power supply;

[0126] Based on the first voltage signal and the second voltage signal, perform self-check on the track circuit.

[0127] In another aspect, the present invention also provides a non-transitory computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, it is used to execute the detection method of the track circuit provided by the above-mentioned various methods. The method includes: receiving a first voltage signal sent by a first voltage acquisition module and a second voltage signal sent by a second voltage acquisition module. The first voltage signal is obtained after the voltage signal of the self-check power supply is converted by a first impedance matching module, and the second voltage signal is obtained after the voltage signal of the self-check power supply is converted by a second impedance matching module;

[0128] Based on the first voltage signal and the second voltage signal, perform self-check on the track circuit.

[0129] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed to multiple network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art can understand and implement it without creative labor.

[0130] Through the description of the above embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus a necessary general hardware platform, and of course, it can also be implemented by hardware. Based on such an understanding, the essence of the above technical solution or the part that contributes to the prior art can be embodied in the form of a software product. The computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disc, etc., and includes several instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0131] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A track circuit receiver, characterized in that: The invention comprises a first processor, a second processor, a first acquisition circuit and a second acquisition circuit; the first acquisition circuit comprises a first impedance matching module and a first voltage acquisition module, the second acquisition circuit comprises a second impedance matching module and a second voltage acquisition module, the input end of the first impedance matching module and the input end of the second impedance matching module are both connected to a self-test power supply, the output end of the first impedance matching module is connected to the first processor through the first voltage acquisition module, and the output end of the second impedance matching module is connected to the second processor through the second voltage acquisition module; The first impedance matching module is different from the second impedance matching module; The first impedance matching module is used to convert the voltage signal of the self-test power supply, and send the first voltage signal obtained after the conversion to the first processor through the first voltage acquisition module; The second impedance matching module is used to convert the voltage signal of the self-test power supply, and send the second voltage signal obtained after the conversion to the second processor through the second voltage acquisition module; a target processor, configured to perform a self-test on a track circuit based on the first voltage signal and the second voltage signal, the target processor comprising the first processor or the second processor; The target processor is specifically configured to determine that the first rail power supply self-test passes when it is determined that the ratio of the amplitude of the first voltage signal to the amplitude of the second voltage signal is a second preset value and the difference between the phase of the first voltage signal and the phase of the second voltage signal is a first preset value; Among them, the first acquisition circuit also includes a third impedance matching module, the second acquisition circuit includes a fourth impedance matching module, the second preset value is a ratio of the second preset impedance value to the first preset impedance value, the first preset value is a difference between the phase of the voltage output by the first impedance matching module and the phase of the voltage output by the second impedance matching module, the first preset impedance value is the sum of the impedance value of the first impedance matching module and the impedance value of the third impedance matching module, and the second preset impedance value is the sum of the impedance value of the second impedance matching module and the impedance value of the fourth impedance matching module.

2. The track circuit receiver according to claim 1, characterized in that: The first impedance matching module includes a first capacitor, a first resistor and a second resistor, wherein the first end of the first capacitor and the first end of the first resistor are both connected to the self-test power supply, the second end of the first capacitor is connected to the first voltage acquisition module through the second resistor, and the second end of the first resistor is connected to the first voltage acquisition module.

3. The track circuit receiver according to claim 2, characterized in that: The second impedance matching module includes a second capacitor, a third resistor and a fourth resistor, the first end of the third resistor and the first end of the fourth resistor are both connected to the self-test power supply, the second end of the third resistor is respectively connected to the first end of the second capacitor and the second voltage acquisition module, and the second end of the fourth resistor is respectively connected to the second end of the second capacitor and the second voltage acquisition module.

4. The track circuit receiver according to claim 3, characterized in that: The input end of the third impedance matching module is respectively connected to the first track power supply and the output end of the first impedance matching module, and the output end of the third impedance matching module is connected to the first voltage acquisition module; the input end of the fourth impedance matching module is respectively connected to the first track power supply and the output end of the second impedance matching module, and the output end of the fourth impedance matching module is connected to the second voltage acquisition module.

5. The track circuit receiver according to claim 4, characterized in that: The first acquisition circuit further includes a first switch and a second switch, and the second acquisition circuit further includes a third switch and a fourth switch, the output end of the first impedance matching module is connected to the input end of the third impedance matching module through the first switch, and the first track power supply is connected to the input end of the third impedance matching module through the second switch; the output end of the second impedance matching module is connected to the input end of the fourth impedance matching module through the third switch, and the first track power supply is connected to the input end of the fourth impedance matching module through the fourth switch; The target processor is further configured to control the first switch and the third switch to be closed, and control the second switch and the fourth switch to be opened, when the acquisition circuit for acquiring the voltage signal of the self-test power supply works normally.

6. The track circuit receiver according to claim 5, characterized in that: The target processor is further configured to control the second switch and the fourth switch to be closed, and control the first switch and the third switch to be opened, when the first track power supply self-test passes; The third impedance matching module is used to convert the voltage signal of the first track power supply, and send the third voltage signal obtained after the conversion to the first processor through the first voltage acquisition module; The fourth impedance matching module is used to convert the voltage signal of the first track power supply, and send the fourth voltage signal obtained after the conversion to the second processor through the second voltage acquisition module; The target processor is further configured to determine the track state based on the amplitude of the third voltage signal and the amplitude of the fourth voltage signal when the track circuit includes an AC continuous track circuit; The target processor is further used to determine the track state based on the amplitude of the third voltage signal and the amplitude of the fourth voltage signal, the phase of the third voltage signal and the phase of the fourth voltage signal, and the phase of the voltage signal of the first track power supply and the phase of the voltage signal of the self-test power supply when the track circuit includes a phase-sensitive track circuit.

7. The track circuit receiver according to any one of claims 1 to 6, characterized in that: It also includes a third acquisition circuit and a fourth acquisition circuit. The third acquisition circuit has the same structure as the first acquisition circuit, and the fourth acquisition circuit has the same structure as the second acquisition circuit. The input end of the third acquisition circuit and the input end of the fourth acquisition circuit are both connected to the second track power supply, the output end of the third acquisition circuit is connected to the first processor, and the output end of the fourth acquisition circuit is connected to the second processor.

8. The track circuit receiver according to any one of claims 1 to 6, characterized in that: When the track circuit includes an AC continuous track circuit, the self-test power supply is an external power supply; when the track circuit includes a phase-sensitive track circuit, the self-test power supply is a local power supply of the phase-sensitive track circuit.

9. A method for detecting a track circuit, characterized in that: Applied to the track circuit receiver according to any one of claims 1 to 8, the method comprising: Receive a first voltage signal sent by a first voltage acquisition module and a second voltage signal sent by a second voltage acquisition module, wherein the first voltage signal is obtained by converting the voltage signal of the self-test power supply by the first impedance matching module, and the second voltage signal is obtained by converting the voltage signal of the self-test power supply by the second impedance matching module; performing a self-test on a track circuit based on the first voltage signal and the second voltage signal; The self-checking of the track circuit based on the first voltage signal and the second voltage signal includes: When it is determined that the ratio of the amplitude of the second voltage signal to the amplitude of the first voltage signal is a second preset value, and when it is determined that the difference between the phase of the first voltage signal and the phase of the second voltage signal is a first preset value, it is determined that the first rail power supply self-test has passed; the second preset value is the ratio of the second preset impedance value to the first preset impedance value, the second preset impedance value is the sum of the impedance value of the second impedance matching module and the impedance value of the fourth impedance matching module, and the first preset impedance value is the sum of the impedance value of the first impedance matching module and the impedance value of the third impedance matching module; the first preset value is the difference between the phase of the voltage output by the first impedance matching module and the phase of the voltage output by the second impedance matching module.

10. The method for detecting a track circuit according to claim 9, characterized in that: The method further comprises: When the self-test power supply works normally, the first switch and the third switch are controlled to be closed, and the second switch and the fourth switch are controlled to be opened.

11. The method for detecting a track circuit according to claim 10, characterized in that: The method further comprises: When the first track power supply passes the self-test, controlling the second switch and the fourth switch to be closed, and controlling the first switch and the third switch to be opened; In the case where the track circuit includes an AC continuous track circuit, the track state is determined based on the amplitude of the third voltage signal and the amplitude of the fourth voltage signal; the third voltage signal is obtained after the third impedance matching module converts the voltage signal of the first track power supply, and the fourth voltage signal is obtained after the fourth impedance matching module converts the voltage signal of the first track power supply; Where the track circuit comprises a phase sensitive track circuit, the track state is determined based on the amplitude of the third voltage signal and the amplitude of the fourth voltage signal, and the phase of the third voltage signal and the phase of the fourth voltage signal.

12. A detection device for a track circuit, characterized in that: The track circuit receiver according to any one of claims 1 to 8, the device comprising: A receiving unit, used to receive a first voltage signal sent by the first voltage acquisition module and a second voltage signal sent by the second voltage acquisition module, wherein the first voltage signal is obtained by converting the voltage signal of the self-test power supply by the first impedance matching module, and the second voltage signal is obtained by converting the voltage signal of the self-test power supply by the second impedance matching module; A self-test unit, configured to perform a self-test on a track circuit based on the first voltage signal and the second voltage signal; The self-test unit is specifically used for: In the case where it is determined that the ratio of the amplitude of the first voltage signal to the amplitude of the second voltage signal is a second preset value, and the difference between the phase of the first voltage signal and the phase of the second voltage signal is a first preset value, it is determined that the first rail power supply self-test passes; Among them, the second preset value is the ratio of the second preset impedance value to the first preset impedance value, the first preset value is the difference between the phase of the voltage output by the first impedance matching module and the phase of the voltage output by the second impedance matching module, the first preset impedance value is the sum of the impedance value of the first impedance matching module and the impedance value of the third impedance matching module, and the second preset impedance value is the sum of the impedance value of the second impedance matching module and the impedance value of the fourth impedance matching module.

13. A track circuit receiver, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the track circuit detection method according to any one of claims 9 to 11 is implemented.

14. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the track circuit detection method according to any one of claims 9 to 11 is implemented.

15. A computer program product comprising a computer program, characterized in that When the computer program is executed by a processor, the track circuit detection method according to any one of claims 9 to 11 is implemented.

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