Safety energizing protection circuit system

Abstract

The invention provides a safety energizing protection circuit system which comprises an intelligent detection circuit connected with the output end of a power system and power sockets provided with micro-switches. The intelligent detection circuit comprises a current-limiting resistor R1 electrically connected to the null line and the live line of the power system in a mirror symmetry mode, two same-directional serially-connected diode D, capacitors C and a resistor R2 parallel connection loop, wherein the two same-directional serially-connected diode D and the capacitors C are in parallel connection with the output end of the current-limiting resistor R1, and the two capacitors C and the resistor R2 parallel connection loop are electrically connected with a microcontroller through inverse-phase Schmitt triggers. 5VDC voltage signals from the micro-switches are converted into jitter-free output signals through the inverse-phase Schmitt triggers, and the jitter-free output signals are sent to the microcontroller. When the micro-switches in the jacks of the two power sockets are closed, a 5VDC detection signal 1 and a 5VDC detection signal 2 are sent out respectively, otherwise, a detection signal 1 and a detection signal 2 with zero output signal voltage are sent out, and an internal control program of the microcontroller judges whether the time difference of the signals is within 50 ms or not according to the detected current signals of the two power sockets.

Description

Technical field [0001] The invention relates to a safe power-on protection method for a power supply system. The feature of the invention is to design a detection circuit and detect feedback signals on the wire circuit. The power supply system will only provide electricity when the system receives the signal from the line within 50ms. Output, under normal circumstances, the output of the power system is cut off, effectively ensuring the safety of the power system. Background technique [0002] At present, power supply systems closely related to people’s lives, such as household power supplies and power supplies in public places, have not designed protection circuits to achieve no current output when the system is not using electricity. This has caused potential safety hazards in electricity use to a certain extent, such as children in curiosity Inserting a metal object into a power outlet may cause electric shock. The current through the human body is determined by the applied v...

AI Technical Summary

Problems solved by technology

[0002] At present, power supply systems closely related to people's lives, such as household power supplies and public place power supplies, are not designed with protection circuits to achieve no current output when the system is not in use. This has caused potential safety hazards in power consumption to a certain extent. Inserting metal objects into electrical outlets can cause electric shock

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