Capacitance deterioration detection device for resistance-capacitance device of railway signals equipment

Abstract

The invention provides a capacitance deterioration detection device for a resistance-capacitance device of railway signals equipment. The detection device comprises a current sampling module, an amplification module, a filtering module, an A / D (Analog / Digital) conversion module, a processing unit, a communication unit and an indication and alarm unit, wherein a primary side of the current sampling module is serially connected at any section between the end A and end B of a detected resistance-capacitance device, and the output end of the current sampling module is connected with the amplification module; and the amplification module, the filtering module, the A / D conversion module, the processing unit, the communication unit and the indication and alarm unit are sequentially connected. The device provided by the invention is simple in circuit structure and scientific in design, can be used for performing real-time and on-line isolated detection on the capacitance capacity of the detected resistance-capacitance device and realizing the on-line measurement and status display of the capacitance, is timely and accurate in detection, high in efficiency, high in accuracy, strong in interference resistance, safe and reliable, can ensure the uninterrupted continuous operation of the equipment, is favorable for improving the railway transportation efficiency, and also can be used for greatly reducing the workload of manual detection, reducing the labor intensity of detection technicists and saving the cost.

Description

technical field [0001] The invention relates to a state detection device for a resistance capacitor used in railway signal equipment, in particular to a capacitance degradation detection device for a resistance capacitor of railway signal equipment. Background technique [0002] Railway signaling equipment uses resistive capacitors to delay the pull-up or release time of relays (see appendix Figure 4 ) to meet the usage requirements. When the capacitance decreases, the delay time of the relay will become smaller, causing the equipment to not work normally, affecting the normal use of the signal equipment and reducing the driving efficiency. At present, it is impossible to conduct qualitative or quantitative on-line detection of the capacity change of the resistance capacitor device used in a large number of railway signal equipment. In order to ensure the normal operation of the signal equipment, only manual detection or regular replacement can be adopted. Manual inspectio...

AI Technical Summary

Problems solved by technology

When the capacitance decreases, the delay time of the relay will become smaller, causing the equipment to not work normally, affecting the normal use of the signal equipment and reducing the driving efficiency

At present, it is impossible to conduct qualitative or quantitative online detection of the capacity change of the capacitance of the resistance capacitor device widely used in railway signal equipment. In order to ensure the normal operation of the signal equipment, only manual detection or regular replacement can be adopted.

Manual inspection has a large workload and low efficiency. On the one hand, regular replacement will cause unnecessary waste, and on the other hand, it will also leave potential safety hazards

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