Method, socket and system used for guaranteeing safe power supply

Abstract

The invention discloses a method, a socket and a system used for guaranteeing safe power supply. The method comprises the steps that a light modulator sends a modulation signal to an optical transmitting tube; the optical transmitting tube receives the modulation signal and continuously sends out an active optical signal; an optical receiving tube receives an echo signal, wherein the echo signal is generated by reflecting the active optical signal by an optical high-reflection film arranged on a plug; the light modulator carries out demodulation on the received echo signal so as to acquire a demodulation signal; a recognition unit judges whether the demodulation signal is located in a predetermined strength range or not; and if the demodulation signal is located in the predetermined strength range and a relay is located at an off-state, the recognition unit indicates the relay to be connected, thereby being convenient for the socket to supply power stably. According to the invention, an insertion condition of the plug can be detected in real time, the relay can be conducted only when the plug is totally inserted in the socket, and the relay is cut off after a part of the plug is pulled out of the socket, thereby ensuring the safety of users, and avoiding an arc phenomenon generated when the plug is plugged in and pulled out.

Description

technical field [0001] The invention relates to the safety technology of sockets, in particular to a method, socket and system for ensuring safe power supply. Background technique [0002] With the rapid development of electrical equipment, sockets have become an indispensable strong electrical connection device for people's work and life. Due to the characteristics of strong electricity, the socket is also one of the safety hazards in work and life. Most of the existing sockets are of non-intelligent design, and the safety measures are limited to the insulating baffle at the socket, and there are still many deficiencies. Electric shock will still occur if the user accidentally touches the metal of the plug when inserting or pulling out the plug. In addition, most of the existing sockets are in the form of "constant power supply", that is, they are always charged after being installed and connected, which causes arcing when the electrical plug is inserted and pulled out, e...

AI Technical Summary

Problems solved by technology

In addition, most of the existing sockets are in the form of "constant power supply", that is, they are always charged after being installed and connected, which causes arcing when the electrical plug is inserted and pulled out, especially for high-power electrical appliances. Cause irreversible damage to the plug and socket, affect the service life, and bring safety hazards

[0003] At present, there are some sockets with safety protection function on the market, which can realize the function of power on after the plug is inserted, and the function of instantaneous power failure when the plug is pulled out. One of them is a safety protection function socket based on passive human body thermal release infrared, which is easy to be interfered. Inadvertent disconnection, and the insertion detection is based on mechanical contact judgment, the structure is complex, and the system cost is high; the other socket uses a passive light sensor to judge the plug insertion, which is easily affected by light and misjudgments occur

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