CN2450816Y - Double AC power supply auto-switching device - Google Patents
Double AC power supply auto-switching device Download PDFInfo
- Publication number
- CN2450816Y CN2450816Y CN 00215488 CN00215488U CN2450816Y CN 2450816 Y CN2450816 Y CN 2450816Y CN 00215488 CN00215488 CN 00215488 CN 00215488 U CN00215488 U CN 00215488U CN 2450816 Y CN2450816 Y CN 2450816Y
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- CN
- China
- Prior art keywords
- circuit
- circuit breaker
- power supply
- load
- chip microcomputer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model provides a double AC power supply auto-switching device, which comprises a signal sampling circuit, a switching circuit, a single-chip microcomputer, a drive circuit, and a switch control circuit. The utility model is characterized in that the control ends of a circuit breaker Qn and a circuit breaker are connected with the single-chip microcomputer by the drive circuit in the switch control circuit; the output end of the single-chip microcomputer is connected with load; the input end of the circuit breaker Qn is connected the usually used power supply; the input end of the circuit breaker is connected with stand-by power supply; an energy storing capacitor is additionally provided to be connected in parallel with the load. The utility model has the advantages that the stand-by power supply can be automatically coupled in the load in a moment when the usually used power supply is abnormal, the power supply of the load end can be guaranteed to continuously supply without surge, the load works normally without any influence, and the performance is stable and reliable.
Description
The utility model provides a kind of double cross stream automatic power-supply switch, belongs to power supply automatic conversion technology field in the power circuit.
At present, domestic existing technology report about the AC power automatic transfer equipment, as uninterrupted power supply(ups), in power supply, device is recharged simultaneously, when grid power blackout or occur the device power supply is arranged, but it being shorter to hold time when unusual temporarily, and the cost height.Chinese patent communique disclosed utility model patent on September 15th, 1993 for another example: double cross stream power supply rapid switching device, the patent No.: 92209680, its technical scheme is: adopt modern electronic technology, signal sampling to moment between power supply, triggering and conducting bidirectional triode thyristor after shaping, gating, discriminating, processing and amplifying, make stand-by power supply drop into rapidly, to guarantee running without interruption of power consumption equipment.Defective is no overload, short circuit, ground connection and under-voltage protection; function is less; conversion speed is still not ideal enough; and do not have energy storage device, the whole dead electricity of all relays of load end in the handoff procedure are when sending electricity once more; on the one hand; what form in the short time in the circuit shoves, and easily causes relay contact to ablate, and influences the normal operation of load.
The purpose of this utility model provides that a kind of conversion speed is fast, no-flashy-flow, the continuously normal double cross stream of proof load end power supply automatic power-supply switch.
The purpose of this utility model is achieved in that
Comprise signal acquisition circuit, change-over circuit, single-chip microcomputer, drive circuit and ON-OFF control circuit, wherein the input of single-chip microcomputer connects signal acquisition circuit through change-over circuit, its output connects ON-OFF control circuit through drive circuit, ON-OFF control circuit connects load, it is characterized in that: ON-OFF control circuit comprises circuit breaker Q
nAnd circuit breaker Q
r, circuit breaker Q wherein
nAnd circuit breaker Q
rControl termination drive circuit, its output termination load, and circuit breaker Q
nInput termination power supply commonly used, circuit breaker Q
rInput termination stand-by power supply, and set up storage capacitor, with load and connect.
Described double cross stream automatic power-supply switch, drive circuit comprises driver Q
1～2
Described double cross stream automatic power-supply switch, circuit breaker Q
nAnd circuit breaker Q
rMechanical chain point connect and circuit breaker Q with the lever form
nControl end successively through circuit breaker Q
rNormally closed contact, driver Q
1Connect an output of single-chip microcomputer, circuit breaker Q
rControl end successively through circuit breaker Q
nNormally closed contact, driver Q
2Connect another output of single-chip microcomputer.
Described double cross stream automatic power-supply switch, signal acquisition circuit can be transducer.
Described double cross stream automatic power-supply switch, change-over circuit can be A/D converter.
Its operation principle is: signal acquisition circuit detects the power supply signal of power supply commonly used, the analog signal that measures converts digital signal to through change-over circuit, and the input of input single-chip microcomputer compares judgement by single-chip microcomputer to its signal, when recording commonly used abnormity of power supply, through driver Q
2Connect the circuit breaker Q of stand-by power supply in the control switch control circuit
rAction is connected stand-by power supply to load, controls circuit breaker Q simultaneously
nAction, control power supply commonly used no longer connects load; After the power supply signal that is detected power supply commonly used by signal acquisition circuit was normal, single-chip microcomputer was just exported control signal, through driver Q
1Connect the circuit breaker Q of power supply commonly used in the control switch control circuit
nAction is connected power supply commonly used to load, controls stand-by power supply simultaneously and no longer connects load.
The utility model compared with prior art has following advantage:
1, adopted little, the no arcing of volume, intelligentized circuit breaker, guaranteed that this switching device shifter has overload, short circuit, ground connection and under voltage protection;
2, adopt single-chip microcomputer to detect power supply signal, and the control circuit breaker Q
nAnd circuit breaker Q
rAction, it is reliable rapidly to guarantee that power supply switches;
3, circuit breaker Q
nAnd circuit breaker Q
rHas electric and mechanical interlocking reliably, to prevent connecting power supply commonly used and stand-by power supply simultaneously;
4, increased energy storage device, in handoff procedure, the energy storage device discharge, proof load end power supply is continuous, and load running is had no effect.
Fig. 1 is an operation principle block diagram of the present utility model;
Fig. 2 is the partial circuit figure of the utility model embodiment;
Below in conjunction with accompanying drawing the utility model is described further:
Among Fig. 1: signal acquisition circuit IC
1Meet power supply N commonly used, be used to gather the power supply signal of power supply N commonly used, its output connects the conversion IC circuit
2Input, be that digital signal exports single-chip microcomputer IC to analog signal conversion
3, by single-chip microcomputer IC
3After the signal of gathering compared judgement, the output control signal was through drive circuit IC
7To ON-OFF control circuit IC
4, by ON-OFF control circuit IC
4Control power supply N commonly used or stand-by power supply R are load IC
5Power supply, load IC
5Two ends and be connected to storage capacitor IC
6Because of the collection of signal and processing are the conventional steps that adopts the single-chip microcomputer acquired signal, also with conventional, so only provide the operation principle block diagram, its improved part provides with circuit diagram the connection between its each element.
Among Fig. 2: circuit breaker Q
nInput termination power supply commonly used, circuit breaker Q
rInput termination stand-by power supply, single-chip microcomputer IC
3Adopt 8031, its control signal output ends P
3.1Successively through driver Q
1, circuit breaker Q
rNormally closed contact J
rConnect circuit breaker Q
nControl end, control signal output ends P
3.2Successively through driver Q
2, through circuit breaker Q
nNormally closed contact J
nConnect circuit breaker Q
rControl end, circuit breaker Q
n, circuit breaker Q
rOutput all meet load F
z, and storage capacitor C that sets up and load F
zAnd connect.
Claims (5)
1, a kind of double cross stream automatic power-supply switch, comprise signal acquisition circuit, change-over circuit, single-chip microcomputer, drive circuit and ON-OFF control circuit, wherein the input of single-chip microcomputer connects signal acquisition circuit through change-over circuit, its output connects ON-OFF control circuit through drive circuit, ON-OFF control circuit connects load, it is characterized in that: ON-OFF control circuit comprises circuit breaker Q
nAnd circuit breaker Q
r, circuit breaker Q wherein
nAnd circuit breaker Q
rControl termination drive circuit, its output termination load, and circuit breaker Q
nInput termination power supply commonly used, circuit breaker Q
rInput termination stand-by power supply, and set up storage capacitor, with load and connect.
2, double cross stream automatic power-supply switch as claimed in claim 1, it is characterized in that: drive circuit comprises driver Q
1～2
3, double cross stream automatic power-supply switch as claimed in claim 1 is characterized in that: circuit breaker Q
nAnd circuit breaker Q
rMechanical chain point connect and circuit breaker Q with the lever form
nControl end successively through circuit breaker Q
rNormally closed contact, driver Q
1Connect an output of single-chip microcomputer, circuit breaker Q
rControl end successively through circuit breaker Q
nNormally closed contact, driver Q
2Connect another output of single-chip microcomputer.
4, double cross stream automatic power-supply switch as claimed in claim 1, it is characterized in that: signal acquisition circuit can be transducer.
5, double cross stream automatic power-supply switch as claimed in claim 1, it is characterized in that: change-over circuit can be A/D converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00215488 CN2450816Y (en) | 2000-07-13 | 2000-07-13 | Double AC power supply auto-switching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00215488 CN2450816Y (en) | 2000-07-13 | 2000-07-13 | Double AC power supply auto-switching device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2450816Y true CN2450816Y (en) | 2001-09-26 |
Family
ID=33581421
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00215488 Expired - Fee Related CN2450816Y (en) | 2000-07-13 | 2000-07-13 | Double AC power supply auto-switching device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2450816Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100377469C (en) * | 2002-08-02 | 2008-03-26 | 华为技术有限公司 | Single-deck power supply backup method and backup system |
| CN101013824B (en) * | 2006-12-12 | 2010-05-12 | 天津市诺尔电气有限公司 | Automatic change-over control circuit of terminal duplicate supply |
| CN101546905B (en) * | 2009-05-06 | 2011-06-15 | 西安科技大学 | Power-off continuous protective circuit for contactor based on energy storage capacitor |
| CN101931267B (en) * | 2009-06-24 | 2013-01-23 | 北京动力源科技股份有限公司 | Control unit for realizing intelligent switching of alternating current input |
| CN105529820A (en) * | 2015-12-14 | 2016-04-27 | 重庆川仪自动化股份有限公司 | Redundant power supply system |
| CN107121645A (en) * | 2017-03-23 | 2017-09-01 | 国家电网公司 | A kind of high-tension switch gear and electrical power monitoring device |
-
2000
- 2000-07-13 CN CN 00215488 patent/CN2450816Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100377469C (en) * | 2002-08-02 | 2008-03-26 | 华为技术有限公司 | Single-deck power supply backup method and backup system |
| CN101159385B (en) * | 2002-08-02 | 2010-12-22 | 华为技术有限公司 | Veneer power source backup method and system |
| CN101013824B (en) * | 2006-12-12 | 2010-05-12 | 天津市诺尔电气有限公司 | Automatic change-over control circuit of terminal duplicate supply |
| CN101546905B (en) * | 2009-05-06 | 2011-06-15 | 西安科技大学 | Power-off continuous protective circuit for contactor based on energy storage capacitor |
| CN101931267B (en) * | 2009-06-24 | 2013-01-23 | 北京动力源科技股份有限公司 | Control unit for realizing intelligent switching of alternating current input |
| CN105529820A (en) * | 2015-12-14 | 2016-04-27 | 重庆川仪自动化股份有限公司 | Redundant power supply system |
| CN107121645A (en) * | 2017-03-23 | 2017-09-01 | 国家电网公司 | A kind of high-tension switch gear and electrical power monitoring device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |