CN2689524Y

CN2689524Y - Electricity preventor of wall socket

Info

Publication number: CN2689524Y
Application number: CN 03257582
Authority: CN
Inventors: 谭启仁
Original assignee: Individual
Current assignee: Building 1 Luofeng Housing Estate Yiqiao Town X
Priority date: 2003-05-14
Filing date: 2003-05-14
Publication date: 2005-03-30
Anticipated expiration: 2013-05-14

Abstract

The utility model discloses an electricity prevention device of a wall socket, particularly an anti-electricity wall of the wall socket when grounding and basic insulation are failed simultaneously, which comprises a signal detection device, a one-chip processor control circuit and a switch executive circuit. The utility model belongs to the technical field of real-time detection and control of one-chip processors and is mainly characterized in that an electronic switch is respectively connected with a ground line of the socket or a ground line and a live line in series respectively. The open and close states of the electronic switch are controlled by the one-chip processor. The signals of the one-chip processor are received from a signal detection converter cross connected between the ground line and a zero line. The detection signals are the electric potential differences between the ground line and the zero line, and are received from the low voltage of a resistance-capacitance voltage reducing circuit or a potential transformer voltage reducing circuit through a rectification circuit. The electricity prevention device of a wall socket can cut off the ground line or cut off the ground line and the live line simultaneously when the grounding and the basic insulation of the electric appliance are failed simultaneously, the ground line and a water pipe are charged, and the live line and the ground line are connected oppositely. The utility model can be extensively used for the anti-electricity protection of wall sockets.

Description

The anti-shock device of body of wall socket

Technical field the invention belongs to single-chip microcomputer and detects in real time and control.

Supply socket before background technology the invention does not have ground connection and the basic insulation personal safety defencive function when losing efficacy simultaneously.

The purpose of summary of the invention the invention is exactly to overcome the shortcoming that prior art exists, provide a kind of can be at electrical equipment ground connection and basic insulation inefficacy simultaneously, ground wire electrification, water pipe is charged and fiery ground wire connects the anti-shock device that cuts off ground wire inverse time or cut off the body of wall socket of ground wire and live wire simultaneously.When local tape was electric, the potential difference that produces between ground wire and zero line obtained high level through reduction voltage circuit, is connected on the switching tube conducting on the reduction voltage circuit, and the Single-chip Controlling electronic switch disconnects, and cut off ground wire or cut off ground wire and live wire simultaneously.

The invention solves the technical scheme that its technical problem adopts: be made up of signal supervisory instrument, single chip machine controlling circuit and switch executive circuit, on socket ground wire or ground wire and live wire, be connected in series an electronic switch separately, the open and-shut mode of electronic switch is controlled by single-chip microcomputer, and the signal of single-chip microcomputer is taken from the input transducer that is connected across between ground wire and zero line; Detection signal is the potential difference between ground wire and zero line, and the low-voltage by resistance-capacitance depressurization or transformer reduction voltage circuit obtains through rectification circuit.Be serially connected in the normal-closed end of electronic switch on socket ground wire or ground wire, the live wire separately.Electronic switch is generally the also available controllable silicon of relay and replaces, and the open and-shut mode of electronic switch is controlled by single-chip microcomputer, and the signal of single-chip microcomputer is connected across the input transducer between ground wire and zero line, and detection signal is the potential difference between ground wire and zero line.

The beneficial effect of the invention is: at electrical equipment ground connection and basic insulation inefficacy simultaneously, ground wire electrification, water pipe is charged and fiery ground wire connects and cuts off ground wire inverse time or cut off ground wire and live wire simultaneously.The present invention is widely used in the anti-electric protection of body of wall socket.

Description of drawings Fig. 1 is the invention circuit structure block diagram.Input transducer (1), single chip machine controlling circuit (2) constitute with electronic switch control circuit (3).

Fig. 2 is the electrical schematic diagram of this bright creation.The resistance-capacitance depressurization circuit is by R ₁C ₁, D ₁-D ₄, C ₁Form, electronic switch is by relay J ₁Or J ₁, J ₂Form.Transformer T can replace and be equivalent to the resistance-capacitance depressurization circuit in the frame of broken lines.Switch transistor T ₁Or T ₁, T ₂

Embodiment the invention is made of with electronic switch control circuit (3) the input transducer (1), the single chip machine controlling circuit (2) that are connected across between ground wire and zero line.Electronic switch is generally relay, and also available controllable silicon replaces.The normal-closed end of electronic switch is serially connected on ground wire or ground wire, the live wire.The keying control ground wire of electronic switch, the break-make of live wire also are controlled by single-chip microcomputer.In the present embodiment, the resistance-capacitance depressurization circuit is by R ₁C ₁, D ₁-D ₄, C ₁Form, electronic switch is by relay J ₁Or J ₁, J ₂Form.Transformer T can replace and be equivalent to the resistance-capacitance depressurization circuit in the frame of broken lines.Switch transistor T ₁Or T ₁, T ₂Be subjected to reduction voltage circuit signal output peak or low level, the conducting of control switch pipe with end.

Claims

1, a kind of anti-shock device of body of wall socket, form by signal supervisory instrument, single chip machine controlling circuit and switch executive circuit, principal character is to be connected in series an electronic switch separately on socket ground wire or ground wire and live wire, the open and-shut mode of electronic switch is controlled by single-chip microcomputer, and the signal of single-chip microcomputer is taken from the input transducer that is connected across between ground wire and zero line; Detection signal is the potential difference between ground wire and zero line, and the low-voltage by resistance-capacitance depressurization or transformer reduction voltage circuit obtains through rectification circuit.

2, the anti-shock device of body of wall socket according to claim 1 is characterized in that being serially connected in separately on socket ground wire or ground wire, the live wire normal-closed end of electronic switch.

3, the anti-shock device of body of wall socket according to claim 1, it is characterized in that electronic switch is generally the also available controllable silicon of relay and replaces, the open and-shut mode of electronic switch is controlled by single-chip microcomputer, the signal of single-chip microcomputer is connected across the input transducer between ground wire and zero line, and detection signal is the potential difference between ground wire and zero line.