Switch power supply detection system circuit

Abstract

The invention discloses a switch power supply detection system circuit which is characterized by comprising a power supply conversion circuit, a voltage detection circuit, a current detection circuit, an over-heat detection circuit, a communication circuit, an address selection circuit, a control circuit, a relay control circuit and a launch and control unit, wherein the power supply conversion circuit is used for converting voltage of a detected power supply into expected voltage. By adopting the switch power supply detection system circuit, the problems that in the prior art, a voltage signal to be detected can be interfered and a detection system can be interfered by a communication digital signal in the process that a switch power supply is detected, and moreover the detection system can be damaged once the voltage of the detected power supply is too high are solved, by virtue of voltage isolation and communication isolation, the anti-interference property of a system is improved, and the security of the detection system is improved through steps of pressure separation, isolation and amplification of a voltage signal to be detected and current signal value reduction.

Description

technical field [0001] The invention relates to the field of automatic detection, and is mainly used for realizing the automatic detection of a switching power supply system. [0002] Background technique [0003] With the popularity of various electrical and electronic products in work and life, switching power supplies are widely used in a wide range of applications. At present, in the process of testing switching power supplies, there will be interference with the voltage signal to be measured, and the communication digital signal will interfere with the detection system. Interference will be generated, and if the detected power supply voltage is too high, it will cause damage to the detection system. [0004] Therefore, the industry needs a switching power supply detection system that has high safety and will not cause interference to the voltage signal to be measured and the detection system itself. [0005] Contents of the invention [0006] The switching power su...

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Problems solved by technology

[0003] With the popularity of various electrical and electronic products in work and life, switching power supplies are widely used in a wide range of applications. At present, in the process of testing switching power supplies, there will be interference with the voltage signal to be measured, and the communication digital signal will interfere with the detection system. Interference, and if the detected power supply voltage is too high, it will cause damage to the detection system

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