Railway signal spare part health state monitoring system

Abstract

The utility model provides a railway signal spare part health state monitoring system, which comprises a simulation track circuit acquisition monitoring circuit, a switching value acquisition monitoring circuit and a signal centralized monitoring system, and is characterized in that the simulation track circuit acquisition monitoring circuit comprises a simulation track circuit and an analog quantity acquisition circuit; the analog quantity acquisition circuit and the switching value acquisition monitoring circuit are in signal connection with the signal centralized monitoring system; the analog quantity acquisition circuit is used for performing voltage and carrier frequency acquisition on a key point of the analog track circuit, and then sending the voltage and the carrier frequency to the signal centralized monitoring system for logical judgment to obtain state information of railway signal spare parts; and the switching value acquisition and monitoring circuit is used for acquiring switching values of the relay and the circuit breaker and sending the switching values to the signal centralized monitoring system, and judging the state of the equipment through the on-off state of the switching values. The utility model solves the problem that the existing railway lacks the management of the spare parts of the signal equipment in the system.

Description

Technical Field

[0001] The utility model relates to the technical field of railway signals, and particularly relates to a health status monitoring system for railway signal spare parts. Background Art

[0002] With the rapid development of high-speed railways, the speed of EMUs is also getting faster and faster. Signal engineering requires more refined management to ensure the safe, stable and fast running of trains.

[0003] In current railway signal maintenance work, the status of all in-use signal equipment has been included in centralized monitoring for real-time monitoring. However, spare parts equipment that is used for emergency disposal and has been in a cold standby state for a long time has always been a pain point in maintenance. Especially for precision electronic component equipment of signals, long-term placement can lead to inaccurate function accuracy or even damage. Due to the lack of online monitoring means, problems are only discovered during the process of emergency fault handling, which in turn affects the train operation schedule. Content of the Utility Model

[0004] Aiming at the deficiencies of the above-mentioned prior art, the utility model provides a health status monitoring system for railway signal spare parts, solves the problem that existing railways lack system management of signal equipment spare parts, realizes real-time health monitoring of various railway signal spare parts equipment, and improves the monitoring omission of signal equipment in the railway system.

[0005] A health status monitoring system for railway signal spare parts includes: an analog track circuit acquisition and monitoring circuit, a switch quantity acquisition and monitoring circuit, and a signal centralized monitoring system. The analog track circuit acquisition and monitoring circuit includes an analog track circuit and an analog quantity acquisition circuit. The analog quantity acquisition circuit and the switch quantity acquisition and monitoring circuit are signal-connected to the signal centralized monitoring system;

[0006] The analog track circuit forms a frequency shift track circuit loop with railway signal spare parts. The railway signal spare parts include relays, transmitters, receivers, redundant attenuators, lightning protection analog network disks, and tuning matching units;

[0007] The analog quantity acquisition circuit is used to collect the voltage and carrier frequency at key points of the analog track circuit, and then send them to the signal centralized monitoring system for logical judgment to obtain the status information of railway signal spare parts;

[0008] The switch quantity acquisition and monitoring circuit is used to collect the switch quantities of relays and circuit breakers and send them to the signal centralized monitoring system, and judge the equipment status through the on-off state of the switch quantity.

[0009] Further, the transmitter provides two 24V power supplies through the signal centralized monitoring system. After internal frequency selection, it transmits a frequency-shift signal to the redundant attenuator. The redundant attenuator judges through the track relay and the direction circuit to switch the output voltage and send it to the lightning protection analog network disk. The lightning protection analog network disk simulates the parameters of the SPT digital signal cable to achieve compensation for the cable length of the analog outdoor equipment. The tuning matching unit enables the stable transmission of the frequency-shift signal to the redundant attenuator, and the receiver demodulates the frequency-shift signal of the analog track circuit.

[0010] Further, the key points of the analog track circuit are specifically as follows: the output voltage of the transmitter is the 1st acquisition point, the input voltage on the track side of the redundant attenuator is the 2nd acquisition point, the output voltage on the track side of the redundant attenuator is the 3rd acquisition point, and the received voltage of the receiver is the 4th acquisition point.

[0011] Further, the analog quantity acquisition circuit includes a frequency-shift acquisition power supply box, a frequency-shift track circuit acquisition device A, a frequency-shift track circuit acquisition device B, and an impedance matcher;

[0012] The frequency-shift acquisition power supply box provides acquisition power for the frequency-shift track circuit acquisition device A and the frequency-shift track circuit acquisition device B;

[0013] The frequency-shift track circuit acquisition device A is used to monitor the 1st acquisition point and the 2nd acquisition point, and the acquisition voltage range is 1 - 200V;

[0014] The frequency-shift track circuit acquisition device B is used to monitor the 3rd acquisition point and the 4th acquisition point, and the acquisition voltage range is 0 - 1V;

[0015] The frequency-shift track circuit acquisition device B increases the acquisition accuracy by connecting in series with an impedance matcher.

[0016] Further, the switch quantity acquisition circuit includes a circuit breaker, at least two relays, and a monitoring acquisition machine. The monitoring acquisition machine is connected to the front contact of the relay and one side of the circuit breaker. The relay and the circuit breaker form a parallel circuit to keep it normally energized.

[0017] The present utility model builds an on-line circuit through existing spare equipment and monitoring systems to realize the monitoring of its health and off-line states, and uploads alarm information to the workshop and section terminals, solving the problem of the disconnection of the current spare parts management, and can improve the operation safety emergency guarantee of the railway to a certain extent, realizing the closed-loop management of spare parts. Description of the Drawings

[0018] Figure 1 is the principle block diagram of a railway signal spare parts health status monitoring system provided by an embodiment of the present utility model;

[0019] Figure 2It is a schematic structural diagram of the analog track circuit in the embodiment of the present utility model;

[0020] Figure 3 It is a schematic diagram of the tuning and matching unit in the embodiment of the present utility model;

[0021] Figure 4 It is a position diagram of the monitoring and acquisition points in the embodiment of the present utility model;

[0022] Figure 5 It is a schematic diagram of the analog quantity acquisition circuit in the embodiment of the present utility model;

[0023] Figure 6 It is a schematic diagram of the digital quantity acquisition circuit in the embodiment of the present utility model;

[0024] Figure 7 It is a page diagram of the spare parts system in the embodiment of the present utility model. Specific embodiments

[0025] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0026] The embodiment of the present utility model provides a health status monitoring system for railway signal spare parts. Taking a signal relay station as an example, the spare parts configuration standard is as follows: 1 transmitter, 1 receiver, 1 redundant attenuator, 1 analog network disk, 1 JWXC-1700 relay (GJ, RBJ, Z\FDYJ), 1 JWXC-1700 relay (FQJ), 1 JYXC-660 relay (FJ), 1 circuit breaker, 1 tuning and matching unit (1700HZ, 2000HZ, 2300HZ, 2600HZ) each, etc.

[0027] Please refer to Figure 1 , in the embodiment of the present utility model, the health status monitoring system for railway signal spare parts includes an analog track circuit acquisition and monitoring circuit, a digital quantity acquisition and monitoring circuit, and a signal centralized monitoring system. The analog track circuit acquisition and monitoring circuit includes an analog track circuit and an analog quantity acquisition circuit. The analog quantity acquisition circuit and the digital quantity acquisition and monitoring circuit are signal-connected to the signal centralized monitoring system.

[0028] The described analog track circuit forms a special processed frequency shift track circuit loop with indoor spare parts (such as relays, transmitters, receivers, redundant attenuation devices, lightning protection analog network panels) and outdoor spare parts (such as tuning matching units). By selecting four key acquisition points, the analog quantity acquisition circuit acquires voltage and current, and through the signal centralized monitoring system for logical judgment, the status information of railway signal spare parts (transmitters, receivers, redundant attenuation devices, analog network panels, tuning matching units, etc.) is obtained;

[0029] The described digital quantity acquisition and monitoring circuit is used to acquire the digital quantities of relays and circuit breakers and send them into the signal centralized monitoring system, and judge the equipment status through the on / off state of the digital quantities.

[0030] As Figure 2 and Figure 4 As shown, in the described analog track circuit, the transmitter, receiver, lightning protection analog network panel, track relay are connected to the redundant attenuation device. The transmitter provides two-way 24V power supply through the signal centralized monitoring system. After internal frequency selection, it emits frequency shift signals to the redundant attenuation device. The redundant attenuation device judges and switches the output voltage through the track relay and direction circuit and sends it to the lightning protection analog network panel. The lightning protection analog network panel simulates the parameters of the SPT digital signal cable to achieve compensation for the cable length of the analog outdoor equipment. The tuning matching unit is capacitive to the frequency shift signal, forms a parallel resonance with the comprehensive inductance of the tuning area, presents an extremely high impedance, so that the frequency shift signal can be stably transmitted to the redundant attenuation device. The receiver demodulates the frequency shift signal of the analog track circuit to realize the fault alarm condition of the analog track circuit equipment.

[0031] It should be specially noted that the transmitter and receiver can only perform frequency selection transmission and demodulation for a single frequency. Since the tuning matching unit is composed of 4 devices with different frequencies, the tuning matching unit is composed of three parts of circuits: tuning, matching, and inductance. The equipment principle is shown in Figure 3 .

[0032] Among them, the tuning part forms a series resonance with the adjacent section frequency, presents a relatively low impedance (about dozens of milliohms), called "zero impedance", equivalent to a short circuit, preventing the adjacent section signal from entering this track circuit section, presenting a capacitive property to the frequency of this section, and forming a parallel resonance with the comprehensive inductance of the rails and hollow coils in the tuning area, presenting a relatively high impedance, called "extremely high impedance" (about 2Ω), reducing the attenuation of the signal in this section; the matching transformer part realizes the impedance matching connection between the track circuit impedance and the SPT digital signal cable impedance; the inductance part is added to compensate for the parameters of the rail lead wire between the original hollow coil and the rail. The frequency change of the tuning matching transformer mainly depends on the change of its inductance and capacitance values. As shown in Table 1, the analog track circuit of the present invention passes through different series and parallel connections of the tuning unit ( Figure 2(Outdoor part), a combined tuning and matching unit with an approximate frequency of 1700HZ is formed for circuit composition.

[0033] Table 1 Inductor Technical Specifications

[0034]

[0035] After the analog track circuit is built, the track circuit level poles are adjusted as shown in Table 2 below:

[0036] Table 2 Level Pole Adjustment Table

[0037]

[0038] The analog quantity acquisition circuit mainly acquires voltage and carrier frequency at key points of the analog track circuit. The output voltage (including carrier frequency) of the transmitter is the No. 1 acquisition point, the input voltage (including carrier frequency) of the non-insulated track circuit attenuation box is the No. 2 acquisition point, the output voltage (including carrier frequency) of the non-insulated track circuit attenuation box is the No. 3 acquisition point, and the received voltage (including carrier frequency) of the ZPW-2000 receiver is the No. 4 acquisition point. The 4 acquisition points are as Figure 4 shown.

[0039] As Figure 5 shown, the analog quantity acquisition circuit includes a frequency shift acquisition power supply box, two frequency shift track circuit acquisition devices (Frequency Shift Track Circuit Acquisition Device A and Frequency Shift Track Circuit Acquisition Device B), and an impedance matcher. The frequency shift acquisition power supply box provides acquisition power for the two frequency shift track circuit acquisition devices. Frequency Shift Track Circuit Acquisition Device A monitors the No. 1 acquisition point (output voltage (including carrier frequency)) and the No. 2 acquisition point (input voltage (including carrier frequency) of the non-insulated track circuit attenuation box), and the acquisition voltage range is 1 - 200V. Frequency Shift Track Circuit Acquisition Device B monitors the No. 3 acquisition point (output voltage (including carrier frequency) of the non-insulated track circuit attenuation box) and the No. 4 acquisition point (received voltage (including carrier frequency) of the ZPW-2000 receiver), and the acquisition voltage range is 0 - 1V. Since the voltages at the 3rd and 4th acquisition points are too low, Frequency Shift Track Circuit Acquisition Device B increases the acquisition accuracy of the frequency shift track circuit acquisition device by connecting an impedance matcher in series.

[0040] As Figure 6 shown, the switch quantity acquisition circuit includes 3 relays, a circuit breaker, and a monitoring acquisition machine. The monitoring acquisition machine is connected to the front contact of the relay and one side of the circuit breaker. The relays and the circuit breaker form a parallel circuit and are normally pulled in.

[0041] Offline Analysis and Spare Parts Management:

[0042] The analog track circuit and the switch quantity acquisition circuit are monitored through the signal centralized monitoring system. The interface of the centralized monitoring spare parts system is as Figure 7As shown, the health status of the device is judged by its information status. Alarms will appear on the centralized monitoring interface when the device status is abnormal or offline. Moreover, the confirmation authority for offline alarms is raised to the section-level terminal. After the alarm is restored, a window will pop up with the content: "The monitoring of XXX spare parts has been restored". This window will eliminate the alarm only after being confirmed by the section-level and workshop-level terminals. The confirmation operation records of alarm confirmation and restoration confirmation and the operation records of spare parts information modification are monitored in the operation records, initially realizing the informatization and electronicization of spare parts management. The logic of spare parts offline alarm is as Figure 7 shown.

[0043] Analog quantity acquisition alarm:

[0044] 1) If there is no voltage (including carrier frequency) in the first acquisition of the analog quantity acquisition circuit, an alarm will be reported for the offline of the ZPW-2000 transmitting box;

[0045] 2) If there is no voltage (including carrier frequency) in the second acquisition of the analog quantity acquisition circuit and the information of the first acquisition point is normal, an alarm will be reported for the offline of the non-insulated track circuit attenuator;

[0046] 3) If there is no voltage (including carrier frequency) in the third acquisition of the analog quantity acquisition circuit and the information of the first and second acquisition points is normal, an alarm will be reported for the offline of the non-insulated lightning protection cable analog network box and the tuning matching unit;

[0047] 4) If there is no voltage (including carrier frequency) in the fourth acquisition of the analog quantity acquisition circuit and the information of the first, second, and third acquisition points is normal, an alarm will be reported for the offline of the ZPW-2000 receiver;

[0048] 5) If the information of the first, second, third, and fourth acquisition points of the analog quantity acquisition circuit is normal and the BPBJ1 switch quantity drops, an alarm will be reported for the offline of the JWXC-1700;

[0049] Switch quantity acquisition alarm:

[0050] Three relays and one circuit breaker of the switch quantity circuit are monitored through the signal centralized monitoring system. The health and offline status of the device are judged by the on-off status. When any relay drops or the circuit breaker disconnects, the centralized monitoring interface will report the offline of the corresponding device.

[0051] The present utility model mainly combines the actual situations of spare parts in the signal sections and high-speed rail infrastructure sections of each railway administration group company. An online circuit is built through the existing spare parts equipment and monitoring system to realize the monitoring of its health and offline status, and the alarm information is uploaded to the workshop and section terminals. Through the double-layer control of the system and the system, the problem of the disconnection of spare parts management is solved, which can improve the operation safety emergency guarantee of the railway to a certain extent and realize the closed-loop management of spare parts.

[0052] The above are only specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed by the present utility model should be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the protection scope of the claims.

Claims

1. A railway signal spare parts health status monitoring system, characterized in that: include: An analog track circuit acquisition monitoring circuit, a switch quantity acquisition monitoring circuit and a signal centralized monitoring system, wherein the analog track circuit acquisition monitoring circuit comprises an analog track circuit and an analog quantity acquisition circuit, and the analog quantity acquisition circuit and the switch quantity acquisition monitoring circuit are signal-connected to the signal centralized monitoring system; The simulated track circuit is formed by railway signal spare parts to form a frequency-shifted track circuit loop, and the railway signal spare parts include relays, transmitters, receivers, redundant attenuators, lightning protection simulation network disks and tuning and matching units; The analog quantity acquisition circuit is used to collect the voltage and carrier frequency of the key points of the analog track circuit, and then send them to the signal centralized monitoring system for logical judgment to obtain the status information of railway signal spare parts; The switch quantity collection and monitoring circuit is used to collect the switch quantities of relays and circuit breakers and send them to the signal centralized monitoring system, and judge the equipment status according to the on-off status of the switch quantities.

2. The railway signal spare parts health status monitoring system according to claim 1, characterized in that: The transmitter provides two 24V power supplies through the signal centralized monitoring system, and transmits the frequency-shifted signal to the redundant attenuator after internal frequency selection. The redundant attenuator judges the output voltage through the track relay and the direction circuit and sends it to the lightning protection simulation network disk. The lightning protection simulation network disk simulates the parameters of the SPT digital signal cable to compensate for the cable length of the simulated outdoor equipment. The tuning and matching unit makes the frequency-shifted signal stably transmitted to the redundant attenuator, and the receiver demodulates the frequency-shifted signal of the simulated track circuit.

3. The railway signal spare parts health status monitoring system according to claim 1, characterized in that: The key points of the simulated track circuit are specifically as follows: the power output voltage of the transmitter is collection point No. 1, the track input voltage of the redundant attenuator is collection point No. 2, the track output voltage of the redundant attenuator is collection point No. 3, and the receiving voltage of the receiver is collection point No.

4.

4. The railway signal spare parts health status monitoring system according to claim 3, characterized in that: The analog quantity acquisition circuit includes a frequency shift acquisition power supply box, a frequency shift track circuit acquisition device A, a frequency shift track circuit acquisition device B, and an impedance matcher; The frequency-shift acquisition power supply box provides acquisition power for the frequency-shift track circuit acquisition device A and the frequency-shift track circuit acquisition device B; The frequency-shift track circuit acquisition device A is used to monitor the acquisition points 1 and 2, and the acquisition voltage range is 1 to 200V; The frequency-shift track circuit acquisition device B is used to monitor the acquisition points 3 and 4, and the acquisition voltage range is 0 to 1V; The frequency-shift track circuit acquisition device B increases the acquisition accuracy by connecting an impedance matcher in series.

5. The railway signal spare parts health status monitoring system according to claim 1, characterized in that: The switch quantity acquisition circuit includes a circuit breaker, at least two relays, and a monitoring acquisition machine. The monitoring acquisition machine is connected to the front contact of the relay and to one side of the circuit breaker. The relay and the circuit breaker form a parallel circuit so that it is normally energized.

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