A method and device for detecting a safety acquisition circuit
By collecting information on railside signal equipment in the field of rail transit, using safety acquisition circuit detection methods and devices, and using components such as CPU, DAC, ADC and relays, the full range detection and safety integrity judgment of the acquisition circuit are achieved, and the problems of low detection coverage and high risk of common mode failure in the prior art are solved.
Patent Information
- Application Number
- CN202411809923.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-10
- Publication Date
- 2025-04-04
AI Technical Summary
The existing technology has problems such as insufficient range coverage, low detection coverage, lack of independence in detection capabilities and high risk of common mode failure in the information collection of rail transit.
Using a safe acquisition circuit detection method and device, the CPU control relay is used to suck it, switch the input of the acquisition circuit to the detection signal, use the DAC chip to generate a voltage sequence, and use the ADC chip to sample the detection signal to judge the safety and integrity of the acquisition circuit. The method also designs a dual-channel detection, which is detected through two independent detection channels, and generates differentiated detection signals to avoid common mode failure.
The full range detection of the acquisition circuit is realized, the detection coverage is improved, the signal acquisition is interrupted during the detection process is avoided, the normal acquisition function is maintained, and the risk of common mode failure is reduced.