CN202009263U

CN202009263U - Three-way power supply automatic switching module

Info

Publication number: CN202009263U
Application number: CN2010205647918U
Authority: CN
Inventors: 黄冬来
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-10-14
Filing date: 2010-10-14
Publication date: 2011-10-12
Anticipated expiration: 2020-10-14

Abstract

The utility model relates to a three-way power supply automatic switching module, characterized in that detection signals of a primary power supply detection circuit, a stand-by power supply detection circuit and an EPS detection circuit are transmitted to a single chip microcomputer control circuit via an analog switch circuit, and the single chip microcomputer control circuit is connected with a display circuit. When the primary power supply detection circuit is in abnormal voltage condition, but the stand-by power supply detection circuit is in normal voltage condition, the single chip microcomputer control circuit switches on the primary power supply of a primary power supply driving circuit, and switches off the stand-by power supply of a stand-by power supply driving circuit; and when both the primary power supply detection circuit and the stand-by power supply detection circuit are in abnormal voltage condition, the single chip microcomputer control circuit switches off the primary power supply and the stand-by power supply of the primary power supply driving circuit and the stand-by power supply driving circuit, and switches on the EPS power supply of an EPS driving circuit. Switch between three ways of power supplies is fast, thus providing reliable and uninterrupted power supply for important electrical devices, and more effectively ensuring the reliability of power supply; in addition, the operation is simple, the performance is stable and the popularization is easy.

Description

A kind of three-way power automatic switchover module

Technical field

The utility model relates to the power supply field, is specifically related to a kind of three-way power automatic switchover module.

Background technology

Power supply is the indispensable energy of modern society, for living to produce, various modernized instruments and people brought a lot of new and revolutions, the power supply dependability is paid close attention to very much, particularly some important places as: hospital, security institute, market, telecommunications, move, occasion such as fire-fighting power-equipment, but traditional two-way circuit conversion device is short useful life, job insecurity can not satisfy the requirement in important place.

The utility model content

The purpose of this utility model provides a kind of automatic switchover of three-way power safely and effectively module.

The technical scheme that the utility model adopted is such: a kind of three-way power automatic switchover module, detection signal by main power source testing circuit, stand-by power supply testing circuit, EPS testing circuit is delivered to single chip machine controlling circuit through analog switching circuit, and single chip machine controlling circuit connects a display circuit.

The output signal of described single chip machine controlling circuit is sent to the EPS drive circuit by the main power source drive circuit, the output signal of described display circuit sends to the stand-by power supply drive circuit, electric voltage exception appears in the main power source testing circuit, but stand-by power supply testing circuit voltage just often, single chip machine controlling circuit drives the primary power source de-energizes of main power source drive circuit, the stand-by power supply power supply of stand-by power supply drive circuit; When electric voltage exception appearred in main power source testing circuit and stand-by power supply testing circuit, single chip machine controlling circuit drove main power source, the stand-by power supply outage of main power source drive circuit and stand-by power supply drive circuit, the EPS power supply power supply of EPS drive circuit.

By adopting the aforementioned techniques scheme, the beneficial effects of the utility model are: this three-way power automatic switchover module adopts main power source, stand-by power supply, EPS uninterrupted power supply three-way power, switch speed is fast between the three-way power, for important electric equipment provides reliable uninterrupted power supply, can more effectively guarantee the reliability that power supply is supplied with, simple to operate, stable performance, be easy to promote.

Description of drawings

Fig. 1 is the frame assumption diagram of the utility model embodiment;

Fig. 2 is the circuit diagram of the utility model embodiment.

Embodiment

Further specify the utility model below in conjunction with the drawings and specific embodiments.

As shown in Figure 1, a kind of three-way power automatic switchover module, by main power source testing circuit 1, stand-by power supply testing circuit 2, the detection signal of EPS testing circuit 3 is delivered to single chip machine controlling circuit 5 through analog switching circuit 4, single chip machine controlling circuit 5 connects a display circuit 6, the output signal of described single chip machine controlling circuit 5 is sent to EPS drive circuit 9 by main power source drive circuit 7, the output signal of described display circuit 6 sends to stand-by power supply drive circuit 8, electric voltage exception appears in main power source testing circuit 1, but stand-by power supply testing circuit 2 voltages just often, single chip machine controlling circuit 5 drives the primary power source de-energizes of main power source drive circuit 7, the stand-by power supply power supply of stand-by power supply drive circuit 8; When main power source testing circuit 1 electric voltage exception occurred with stand-by power supply testing circuit 2, single chip machine controlling circuit 5 drove main power source, the stand-by power supply outage of main power source drive circuit 7 and stand-by power supply drive circuit 8, the EPS power supply power supply of EPS drive circuit 9.

As shown in Figure 2, L1, L2, L3, N constitute AC220V loop alternating voltage, phase line is respectively through capacitor C 1,1C1,2C1 step-down, resistance R 1,1R1,2R1 current limliting, resistance R 2,1R2,2R2 dividing potential drop, diode D1,1D1,1D2 rectification, again through DW1, DW2, DW3 voltage stabilizing, export 2.2V direct current main power voltage signal, be transported to the 1st, 5,2 pin of analog switching circuit U3 respectively; 1L1,112,1L3,1N constitute AC220V loop alternating voltage, phase line is respectively through electric capacity 3C1,4C1,5C1 step-down, resistance 3R1,4R1,5R1 current limliting, resistance 3R2,4R2,5R2 dividing potential drop, diode 3D1,4D1,5D2 rectification, again through 1DW1,1DW2,1DW3 voltage stabilizing, export 2.2V dc standby power voltage signal, be transported to the 14th, 15,12 pin of analog switching circuit U3 respectively; The EPS signal is transported to the 4th pin of analog switching circuit U3 after 6D1,6D2,6D3 rectification.

3 of analog switching circuit U3,9,10,11 pin are connected respectively to the 24th of single chip machine controlling circuit U1,32,23,22 pin, by single chip machine controlling circuit U1 control U3 the 9th, 10, the switch of 11 ends switches, with the cycle detection state, gather analog switching circuit U3 the 4th, 2,5,1,12,14,15 end main power sources, stand-by power supply, the current voltage status input interface of EPS power supply, when detecting analog switching circuit U3, single chip machine controlling circuit U1 connects the power interface state, with single chip machine controlling circuit U1 internal database the part that do not conform to is arranged, send the respective drive instruction, promote display circuit U4 simultaneously and show current voltage status.

As L1, L2, when electric voltage exception appears in any phase line of L3, but 1L1,1L2, when 1L3 phase line voltage is normal value, single chip machine controlling circuit U1 the 26th pin output high level makes triode T2 saturated through resistance 6R6, relay J 2 discharges and promotes motor-operating mechanism separating brake, primary power source de-energizes.The 28th pin output low level of single chip machine controlling circuit U1 ends triode T3 through resistance 6R7, and relay J 1 adhesive promotes motor-operating mechanism and closes a floodgate, the stand-by power supply power supply.

As L1, L2, when electric voltage exception appears in any phase line of L3,1L1,1L2,1L3 phase line voltage also occur when unusual, starting the EPS power supply switches, the 26th pin output high level of single chip machine controlling circuit U1, make T2 saturated through resistance 6R6, relay J 2 discharges and promotes motor-operating mechanism separating brake, primary power source de-energizes.The 28th pin output low level of U1 ends triode T3 through resistance 6R7, and relay J 1 discharges and promotes the motor-operating mechanism separating brake, the stand-by power supply outage.The 27th pin output low level of single chip machine controlling circuit U1 ends triode T1 through resistance 6R9, and relay J 3 adhesives promote motor-operating mechanism and close a floodgate, the stand-by power supply power supply.

More than show and described basic principle of the present utility model and principal character and advantage thereof; the technical staff of the industry should understand; the utility model is not restricted to the described embodiments; that describes in the foregoing description and the explanation just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications; these changes and improvements clans are gone in claimed the utility model scope, and the claimed scope of the utility model is defined by appending claims and equivalent thereof.

Claims

1. three-way power automatic switchover module, it is characterized in that: the detection signal by main power source testing circuit (1), stand-by power supply testing circuit (2), EPS testing circuit (3) is delivered to single chip machine controlling circuit (5) through analog switching circuit (4), and single chip machine controlling circuit (5) connects a display circuit (6).

2. a kind of three-way power automatic switchover module according to claim 1, it is characterized in that: described single chip machine controlling circuit (5) drives main power source, stand-by power supply outage, the power supply of main power source drive circuit (7) and stand-by power supply drive circuit (8), and the power supply of the EPS power supply of EPS drive circuit (9).