Railway signal resistance-capacitance element on-line monitoring system

Abstract

The utility model discloses an on-line monitoring system for a railway signal resistance-capacitance element, which adopts an open-type Hall direct-current transformer to collect the discharge current of the resistance-capacitance element, and adopts a capacitance diagnosis circuit capable of detecting the capacitance value within the range of 50 mu F to 3300 mu F. The detection and diagnosis unit achieves the function of detecting and diagnosing the capacitance capacity attenuation proportion in a single resistor-capacitor combination circuit, the combination frame extension sets are connected with all detection and diagnosis results of a row of railway signal combination frames in tandem, the station switchboard is connected with diagnosis states of the combination frame extension sets in tandem, and the safety signal relay is driven. Relay switching values are incorporated into existing station monitoring equipment, and networking and alarm functions of centralized monitoring of detection and diagnosis results through signals are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of railway signal equipment monitoring, in particular to an online monitoring system for resistance and capacitance components of a railway signal relay circuit. Background Art

[0002] Railway signal RC components are important components of signal control circuits, and their application quality is directly related to railway safety. The Technical Standards for Maintenance Rules of Conventional Railway Signals stipulates that discrete electronic components such as capacitors and diodes shall not be used if their characteristic indicators do not meet the standards. At present, the working status of railway signal RC components is not included in online detection. When the capacitance attenuation exceeds the limit, it cannot be discovered in time, which easily leads to equipment failure and affects railway transportation safety. At present, there are only signal RC component test benches and RC component testers at home and abroad. After the failure occurs, or regularly remove the RC connectors or components used on site from the combination rack in the signal machinery room, they are manually transported to professional testing sites for testing. The timeliness of the detection is seriously delayed, and it fails to play a due role in preventing the occurrence of faults. Railway signal relay circuit RC components urgently need an online monitoring technology and system that can timely and accurately reflect their working conditions. Summary of the invention

[0003] In view of the above technical problems, the utility model proposes an online monitoring system for railway signal RC components, including a detection and diagnosis unit, a combination rack extension and a station switchboard. The detection and diagnosis unit uses an open-type Hall DC transformer to collect the discharge current of the RC components, and uses a capacitor diagnosis circuit that can detect the capacitance range of 50μF to 3300μF to realize the detection and diagnosis function of the capacitance attenuation ratio in a single RC component; the combination rack extension uses an electronic circuit to detect the switch quantity state and aggregate all the detection and diagnosis results of a row of railway signal combination racks; the station switchboard uses an electronic circuit to detect the switch quantity, aggregates the diagnostic status of each combination rack extension, drives the safety signal relay, and incorporates the relay switch quantity into the existing station signal centralized monitoring equipment to realize the networking and alarm functions of the detection and diagnosis results.

[0004] As a preferred embodiment of the above scheme, the detection and diagnosis unit adopts an open-type Hall DC transformer to collect the capacitor discharge (charge) current, without the need for direct electrical connection with the existing circuit, and outputs the corresponding voltage signal, which meets the safety requirements of signal equipment and uses an openable mutual inductance coil for easy on-site installation.

[0005] As a preferred embodiment of the above scheme, the station switchboard includes a power supply module, a detection alarm module and a detection result output module. The power supply module converts AC220V into +12V, -12V DC power supply to supply power to the station switchboard, combination rack extension and detection diagnosis unit; the detection alarm module includes a switch quantity detection circuit and an sound and light alarm circuit, and the detection result output module includes a relay drive circuit and a safety signal relay circuit.

[0006] As a preferred embodiment of the above scheme, the combined rack extension includes a power supply circuit, a switch quantity detection circuit, an alarm indicator light circuit and a status output circuit.

[0007] As a preferred embodiment of the above scheme, a railway signal RC element online monitoring system detects and diagnoses the result and outputs the switch quantity in the state of a safety signal relay for centralized signal monitoring and collection, thus meeting the requirements of safety isolation and information security of the monitoring equipment.

[0008] The beneficial effects of the utility model are:

[0009] The station switchboard, combined rack extension, and detection and diagnosis unit of the system all use independent power supplies provided by the station switchboard. The detection and diagnosis unit uses an open-type Hall DC current transformer with no electrical connection to collect the capacitor discharge (charge) current. The monitoring system will not affect the normal operation of the detected circuit and device under any circumstances. It is suitable for monitoring the performance of capacitors in the slow absorption and slow release resistor-capacitor combination circuit in the railway signal relay circuit, in line with the "fail-safe" principle of signal equipment, and fills the gap of signal resistor-capacitor components without reliable external monitoring technology. The system has a simple circuit structure, low working energy consumption, a wide range of applications, high safety performance, is easy to implement in existing stations, and has strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 The utility model is a schematic diagram of the structural principle framework of an online monitoring system for RC elements in a railway signal relay circuit.

[0011] Figure 2 The present invention is a station switchboard circuit diagram of an online monitoring system for RC components in a railway signal relay circuit.

[0012] Figure 3 The utility model discloses a circuit diagram of a combined rack extension of an online monitoring system for RC components of a railway signal relay circuit. DETAILED DESCRIPTION

[0013] The following is a clear and complete description of the technical solution of the utility model in conjunction with the accompanying drawings of the utility model. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0014] like Figures 1 to 3 The railway signal resistor and capacitor component online monitoring system shown is suitable for performance detection and diagnosis of slow-absorption and slow-discharge resistor and capacitor combination circuits in railway signal relay circuits, and includes a detection and diagnosis unit, a combination rack extension and a station switchboard. The detection and diagnosis unit uses an open-type Hall DC transformer to collect the discharge current of the resistor and capacitor components, and uses a capacitor diagnosis circuit that can detect the capacitance range of 50μF to 3300μF to realize the detection and diagnosis function of the capacitor capacity attenuation ratio in a single resistor and capacitor component; the combination rack extension uses an electronic circuit to detect the switch quantity state and aggregate all the detection and diagnosis results of a row of railway signal combination racks; the station switchboard uses an electronic circuit to detect the switch quantity, aggregates the diagnostic status of each combination rack extension, drives the safety signal relay, and incorporates the relay switch quantity into the existing station signal centralized monitoring equipment to realize the networking and alarm functions of the detection and diagnosis results.

[0015] In this embodiment, the detection and diagnosis unit uses an open-type Hall DC transformer to collect the capacitor discharge (charge) current, does not need to be directly electrically connected to the existing circuit, outputs the corresponding voltage signal, meets the safety requirements of signal equipment, and uses an openable mutual inductance coil to facilitate on-site installation.

[0016] In this embodiment, the station switchboard includes a power supply module, a detection alarm module and a detection result output module. The power supply module converts AC220V into +12V, -12V DC power supply to supply power to the switchboard, combination rack extension and detection diagnosis unit; the detection alarm module includes a switch quantity detection circuit and an sound and light alarm circuit, and the detection result output module includes a relay drive circuit and a safety signal relay circuit.

[0017] In this embodiment, the combined rack extension includes a switch quantity detection circuit, an alarm indicator light circuit and a status output circuit.

[0018] In this embodiment, the whole station detection and diagnosis results are output as switch quantities in the form of safety signal relay states for centralized signal monitoring and collection, thus meeting the requirements for safety isolation of monitoring equipment and information security.

[0019] The station switchboard, combined rack extension, and detection and diagnosis units of the system all use independent power supplies provided by the switchboard. The detection and diagnosis unit uses an open-type Hall DC current transformer with no electrical connection to collect the capacitor discharge (charge) current. The monitoring system will not affect the normal operation of the detected circuits and devices under any circumstances. It is suitable for monitoring the capacitor performance in the slow-absorption and slow-discharge resistor-capacitor combination circuit in the railway signal relay circuit, complies with the "fail-safe" principle of signal equipment, and fills the gap in the lack of reliable external monitoring technology for signal resistor-capacitor components. The system has a simple circuit structure, low operating energy consumption, a wide range of applications, high safety performance, is easy to implement in existing stations, and is very practical.

[0020] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An online monitoring system for railway signal resistor and capacitor components, suitable for performance detection and diagnosis of slow-suck and slow-release resistor and capacitor combination circuits in railway signal relay circuits, characterized by: It includes a detection and diagnosis unit, a combination rack extension and a station switchboard. The detection and diagnosis unit uses an open-type Hall DC mutual inductor to collect the discharge current of the resistor and capacitor element, which is used for detecting and diagnosing the attenuation ratio of the capacitor capacity in a single resistor and capacitor combination circuit; the combination rack extension uses an electronic circuit to detect the switch quantity state, which is used to aggregate the detection and diagnosis results of a row of railway signal combination racks; the station switchboard uses an electronic circuit to detect the switch quantity, which is used to aggregate the diagnostic status of each combination rack extension, drive the safety signal relay, and incorporate the relay switch quantity into the station signal centralized monitoring equipment.

2. The railway signal RC component online monitoring system according to claim 1, characterized in that: The open-type Hall DC mutual inductor collects capacitor discharge and charging currents in a non-electrical connection manner to output corresponding voltage signals, and the mutual inductance coil can be opened.

3. The online monitoring system for resistor and capacitor components according to claim 1 is characterized in that: The station switchboard includes a power supply module, a detection alarm module and a detection result output module. The power supply module converts AC220V into +12V, -12V DC power supply, which is used to power the station switchboard, combination rack extension and detection and diagnosis unit; the detection alarm module includes a switch quantity detection circuit, an sound and light alarm circuit and a relay drive circuit, which is used to display the extension diagnosis status.

4. The online monitoring system for resistor and capacitor components according to claim 1, characterized in that: The combined rack extension comprises a switch quantity detection circuit, an alarm indicator light circuit and a status output circuit.

5. The online monitoring system for resistor and capacitor components according to claim 1 is characterized in that: The detection and diagnosis results are output as switch quantities in the form of signal safety relay states for centralized signal monitoring and collection.

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