Fault monitoring circuit for unmanned crossing
By using indicator lights, optocouplers, and solid-state relays in the fault monitoring circuit of unmanned level crossings, the problems of low current and low voltage of fault indicator lights were solved, enabling timely transmission of fault information and improving maintenance efficiency and level crossing safety.
Patent Information
- Application Number
- CN202422773785.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-14
- Publication Date
- 2025-11-04
- Estimated Expiration
- 2034-11-14
AI Technical Summary
The fault indicator lights at unmanned road crossings have low current and low voltage, making it impossible to directly collect and upload information. This prevents maintenance personnel from obtaining fault information in a timely manner, affecting transportation efficiency.
A fault monitoring circuit employing indicator lights, optocouplers, and solid-state relays transmits fault information to a microcomputer interlocking system via the optocouplers and solid-state relays, enabling timely fault detection and resolution.
It enables timely transmission of fault information, improves the work efficiency of maintenance personnel, ensures the safety and smooth flow of traffic at level crossings, and reduces costs.
Smart Images
Figure CN223508277U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to railway crossing signal equipment field especially, and it relates to a fault monitoring circuit of unmanned crossing. BACKGROUND
[0002] The unmanned crossing alarm system currently used by TISCO all adopts sensor triggering crossing alarm audio host computer, and the host computer outputs alarm power to drive alarm lamp panel and alarm horn to work.If the crossing alarm host computer fails, the host computer lights up the fault indicator lamp, and the alarm horn prompts the voice fault, the fault indicator lamp is LED indicator lamp, the lighting current is small, the voltage is low, and the information cannot be directly collected and uploaded, no fault information is transmitted to the outside, the maintenance personnel cannot obtain the fault information in time, the fault cannot be removed in time, the traffic pressure is brought to the highway, and the overall traffic transportation efficiency is affected. CONTENT OF THE UTILITY MODEL
[0003] The utility model discloses a kind of fault monitoring circuits of unmanned crossing, solve the problem that the current of fault indicator lamp is small, voltage is low, cannot directly collect information upload.
[0004] To achieve the above object, the utility model adopts the following technical scheme:
[0005] A kind of fault monitoring circuit of unmanned crossing, including indicator lamp, photoelectric coupler and solid-state relay, the indicator lamp is connected on alarm host computer, the lamp pin both ends of the indicator lamp are connected with the input end of photoelectric coupler in parallel, the output end of photoelectric coupler is connected solid-state relay, solid-state relay is connected alarm relay through core line, alarm relay is connected microcomputer interlocking system.
[0006] Preferably, the alarm relay and microcomputer interlocking system are placed in signal building.
[0007] The utility model discloses the beneficial effects achieved:
[0008] (1) the circuit is sent crossing fault information to microcomputer interlocking system by indicator lamp, photoelectric coupler, solid-state relay and alarm relay, abnormality is found in time and removed, the work efficiency of maintenance personnel is improved, and the safety and unobstructed of crossing are ensured;
[0009] (2) the cable of crossing to signal building uses the excess core line of existing cable, reduces cost;The circuit is simple, practical and low in cost. SHEET EXPLANATION
[0010] Figure 1 It is the circuit structural diagram of the utility model.
[0011] Mark the following: 1, alarm host computer;2, indicator lamp;3, photoelectric coupler;4, solid-state relay;5, alarm relay. DETAILED DESCRIPTION
[0012] The technical scheme of the utility model will be described clearly and completely in connection with the drawings and embodiments.
[0013] As Figure 1 shown, a fault monitoring circuit of unmanned level crossing includes an indicating lamp 2, a photoelectric coupler 3 and a solid-state relay 4. The indicating lamp 2 is connected to an alarm host 1. The lamp pins of the indicating lamp 2 are connected in parallel with the input end of the photoelectric coupler 3. The output end of the photoelectric coupler 3 is connected to the solid-state relay 4. The solid-state relay 4 is connected to an alarm relay 5 through a core wire. The alarm relay 5 is connected to a microcomputer interlocking system.
[0014] Working principle:
[0015] When the alarm host 1 of the level crossing is not faulty, the input end of the photoelectric coupler 3 has no voltage, the output end of the photoelectric coupler 3 will not be turned on, the fixed relay 4 driven by the photoelectric coupler 3 loses power and falls down, and the indoor fault alarm relay 5 is powered through the pick-up contact of the solid-state relay 4. At this time, the level crossing host is not alarmed, the solid-state relay 4 loses power and falls down, the level crossing alarm relay 5 also falls down, and the indoor microcomputer interlocking system does not collect the level crossing fault information, so the microcomputer interlocking system does not send the level crossing host fault information.
[0016] When the level crossing host is faulty, the level crossing alarm host 1 provides a 3V power supply for its indicating lamp 2. At this time, the input end of the photoelectric coupler 3 is turned on to drive the output end to be turned on. The solid-state relay 4 is introduced with a 24V power supply through the output end of the photoelectric coupler 3. The solid-state relay 4 is excited and picked up through the pick-up contact of the solid-state relay 4 to send a 24V power supply to the coil of the indoor alarm relay 5. The indoor alarm relay 5 is excited and picked up. The indoor level crossing alarm relay 5 sends the level crossing host fault information to the microcomputer interlocking system through its pick-up contact. At this time, the microcomputer interlocking system provides the level crossing host fault alarm voice or indicating lamp information to the operator or electric power personnel in the driving room to remind the operator or electric power personnel to timely go to the site for equipment maintenance work.
Claims
1. A fault monitoring circuit for unmanned pedestrian crossings, characterized in that, The system includes an indicator light (2), an optocoupler (3), and a solid-state relay (4). The indicator light (2) is connected to the alarm host (1). The two ends of the lamp pin of the indicator light (2) are connected in parallel to the input end of the optocoupler (3). The output end of the optocoupler (3) is connected to the solid-state relay (4). The solid-state relay (4) is connected to the alarm relay (5) through the core wire. The alarm relay (5) is connected to the microcomputer interlocking system.
2. The fault monitoring circuit for an unmanned pedestrian crossing according to claim 1, characterized in that, The alarm relay (5) and the microcomputer interlocking system are both located inside the signal building.