High-isolation voltage-resisting bidirectional signal sensor

Abstract

The invention discloses a high-isolation voltage-resisting bidirectional signal sensor. The high-isolation voltage-resisting bidirectional signal sensor mainly solves the problem that high-isolation voltage resistance can not be achieved due to the fact that existing signal isolation detection products in the prior art can not meet technical requirements of control systems. The high-isolation voltage-resisting bidirectional signal sensor comprises a voltage-current signal collecting circuit and a signal output conversion circuit, wherein an input end of the signal output conversion circuit is connected with the voltage-current signal collecting circuit through more than two signal isolation conversion circuits which are connected sequentially, and input ends of signal isolation conversion circuits and the input end of the signal output conversion circuit are connected a direct current-direct current (DCDC) high-isolation power modules respectively. According to the scheme, high-isolation voltage resistance and rapid high-precision signal monitoring can be achieved through the high-isolation voltage-resisting bidirectional signal sensor, the high-isolation voltage-resisting bidirectional signal sensor is a novel high-isolation voltage-resisting signal detection product, and a new solution is provided for localization of high-end control devices such as locomotive traction and mine power supplies and electric automatic devices. The high-isolation voltage-resisting bidirectional signal sensor has the high practical value and the high promotion value.

Description

technical field [0001] The invention relates to a signal sensor, in particular to a high isolation and pressure-resistant bidirectional signal sensor. Background technique [0002] As we all know, in the field of automatic detection and control, there are many types of objects to be inspected, and the types of objects to be inspected are even more complex and diverse in the occasions where high voltage monitoring is required, such as: in rail transit locomotive power supply systems, wind power, solar energy and other important power supply equipment And in the monitoring system, it is necessary to detect the voltage and current signals in the system, so as to realize the automatic adjustment and control of the system. [0003] The most commonly used signal isolation detection products on the market are the following two principles: [0004] 1. The principle of magnetic modulation and demodulation: Invert the DC signal to the AC signal by chopping, and restore the signal to ...

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Problems solved by technology

[0007] The purpose of the present invention is to provide a high-isolation and pressure-resistant bidirectional signal sensor, which mainly solves the problem that the signal isolation detection products in the prior art cannot meet the technical requirements of the control system for a high-isolation environment above 7.5KVAC or 8KVAC

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