Railway light-emitting diode (LED) signal lamp failure alarming system and method

Abstract

The invention provides a railway light-emitting diode (LED) signal lamp failure alarming system and a railway LED signal lamp failure alarming method. The system comprises a direct current power supply, an alarming circuit, an 850 time relay, an alarm receiving unit and a lighted lamp unit alarm sending circuit, wherein the sending circuit comprises a microprocessing controller, a photocoupling tube T1 and a photocoupling tube T2; and the microprocessing controller sends an address code through the photocoupling tube T1 and detects the state of the alarming circuit through the photocoupling tube T2. The method comprises the following steps of: when the address code sent by the microprocessing controller is a high level, if the state of the alarming circuit is the high level, continuously sending the address code, otherwise, exiting from sending; when the sent address code is a low level, if the state of the alarming circuit is the low level, continuously sending the address code; and after the address code is completely sent, sending the high level to the photocoupling tube T1. The system has the advantages of high reliability and no alarming conflict; and the method has the advantages of scientific coding and high practicability.

Description

technical field [0001] The invention relates to a signal lamp fault alarm system, in particular to a railway LED signal lamp fault alarm system and a fault alarm method thereof. Background technique [0002] At present, the fault alarm system commonly used in railway signal lights is as follows: figure 1 As shown, the alarms of multiple lighting unit alarm sending circuits share a pair of alarm lines. If any lighting unit fails, the pair of alarm lines must be short-circuited, so that the 850 time relay is delayed and closed, and the relevant part of the 6502 signal monitoring system is started to alarm. At the same time, the lighting unit also sends out its own address code information, which is received by the alarm receiving unit and sent to the microcomputer monitoring terminal in the central computer room to display the specific address of the faulty lighting unit, thereby facilitating timely maintenance of the corresponding faulty lighting unit But, after a lighting u...

AI Technical Summary

Problems solved by technology

[0002] At present, the fault alarm system commonly used in railway signal lights is as follows: figure 1 As shown, the alarms of the multiple lighting unit alarm sending circuits share a pair of alarm lines. If any lighting unit fails, the pair of alarm lines must be short-circuited to make the 850 time relay pull in with a delay, and start the relevant part of the 6502 signal monitoring system to alarm. At the same time, the lighting unit also sends out its own address code information, which is received by the alarm receiving unit and sent to the microcomputer monitoring terminal in the central computer room to display the specific address of the faulty lighting unit, thereby facilitating timely maintenance of the corresponding faulty lighting unit But, after a lighting unit fails, other lighting units fail, then there will be conflicts between the faulty lighting units, so that the address code information of other faulty lighting units cannot be sent out, which brings problems for the maintenance of lighting unit failures. It caused great inconvenience, and even caused safety accidents; it can be seen that there are serious defects in the coding form of the existing fault alarm system

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