CN201928080U - Power supply detecting and switching device - Google Patents

Power supply detecting and switching device Download PDF

Info

Publication number
CN201928080U
CN201928080U CN2011200199144U CN201120019914U CN201928080U CN 201928080 U CN201928080 U CN 201928080U CN 2011200199144 U CN2011200199144 U CN 2011200199144U CN 201120019914 U CN201120019914 U CN 201120019914U CN 201928080 U CN201928080 U CN 201928080U
Authority
CN
China
Prior art keywords
power supply
circuit
switching
phase
voltage
Prior art date
Application number
CN2011200199144U
Other languages
Chinese (zh)
Inventor
何春林
Original Assignee
北京津宇嘉信科技开发有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 北京津宇嘉信科技开发有限公司 filed Critical 北京津宇嘉信科技开发有限公司
Priority to CN2011200199144U priority Critical patent/CN201928080U/en
Application granted granted Critical
Publication of CN201928080U publication Critical patent/CN201928080U/en

Links

Abstract

The utility model relates to a power supply detecting and switching device which is connected with an external input power supply and a power supply switching executive circuit. The power supply detecting and switching device comprises a voltage detection circuit, a phase detection circuit, a logic judgment circuit and a power supply automatic switching circuit, wherein the voltage detection circuit reduces input voltage and outputs the reduced voltage to the logic judgment circuit; the phase detection circuit detects phase of the input voltage and outputs a fault node signal to the logic judgment circuit; the logic judgment circuit compares and analyzes received signals, judges the real-time status of input power supply and transmits a control signal and a node signal to the power supply automatic switching circuit; and the power supply automatic switching circuit drives the switching executive circuit corresponding to the power supply end according to the received signals. The power supply detecting and switching device has the advantages of simple structure, sensitive control, complete functions, short switching time and reliable control, and switching among power supplies is automatically realized by automatic detection of real-time conditions of input voltage, phase, overvoltage or undervoltage, open-phase, phase failure and the like. In addition, switching alarm is realized by a singlechip microcomputer circuit, and the power supply detection switching device is more suitable for being widely popularized and used.

Description

Power supply detects switching device shifter
Technical field
The utility model relates to a kind of power supply and detects switching device shifter.
Background technology
Existing is the power supply switching alarm device of performer with the contactor, and great majority are to utilize to increase auxiliary contact on contactor, utilize the different methods of attachment between two contactor auxiliary contact then, reach the purpose of two-way power interlock and switching.
See also shown in Figure 1ly, above-mentioned existing power transfer device comprises the two-way power supply, and wherein I road power supply is a primary power cource, II road power supply is standby, KM1 and KM2 are the main contactor of two-way power supply, and A1, A2 are the drive coil of contactor, and NC, NO are two groups of auxiliary contact of contactor.
When I road power supply powers on earlier, because the drive coil of KM1 is connected on the normally-closed contact NC of KM2, so this coil obtains driving voltage, contactor KM1 and auxiliary contact NO adhesive thereof, auxiliary contact NC disconnects, the normal output of the total output of power supply.
When I road power supply operate as normal, in the time of two road power supply electrifyings, because the drive coil of KM2 is connected on the break contact NC of KM1, so coil does not have driving voltage, not adhesive of contactor KM2, the total output of power supply still is the normal output on I road.
And when I road power supply broke down, the drive coil A1 of KM1, A2 two ends did not have voltage, thus KM1, NO disconnection, auxiliary contact NC closure, the drive coil of KM2 is because of obtaining the voltage operate as normal at this moment.
Power supply powers on earlier when the II road, and in the time of the power failure of II road, the situation that the operating state of two-way power supply and above-mentioned I road power on earlier is similar.
Above-mentioned existing power transfer device, be to realize mutual conversion between power supply in the interconnected mode of two contactor auxiliary contact, control inaccuracy, and, because what use is that the mode of relay auxiliary contact electrical interconnection realizes, so the function that realizes is also more single, the phenomenon of adhesive may appear robbing mutually when two-way powers on simultaneously.
This shows that above-mentioned existing power transfer device obviously still has inconvenience and defective, and demands urgently further being improved in structure and use.It is more accurate how to found a kind of control, and has the power supply detection switching device shifter of the new structure of automatic detection, automatic switchover and alarm function, one of real important improvement target that belongs to current industry.
The utility model content
The technical problems to be solved in the utility model provides a kind of power supply and detects switching device shifter, makes its control more accurate, and has automatic detection, automatic switchover and alarm function, thereby overcome the deficiency of existing power transfer device.
For solving the problems of the technologies described above, a kind of power supply of the utility model detects switching device shifter, switches executive circuit with outside input power supply and power supply and is connected, and comprising: voltage detecting circuit, with the input voltage step-down and output to logic judging circuit; Phase detecting circuit carries out phase-detection to input voltage, and the malfunctioning node signal is outputed to logic judging circuit; Logic judging circuit compares, analyzes the signal that receives, and judges the real-time status of input power supply, and transmits control signal and node signal to power supply automatic switchover circuit; Power supply automatic switchover circuit according to the signal that receives, drives and the corresponding switching executive circuit of power end.
As a kind of improvement of the present utility model, described logic judging circuit is overvoltage/undervoltage, misphase, phase shortage, phase failure logic judging circuit.
Also comprise the single-chip microcomputer warning circuit, the alarm signal according to logic judging circuit and the transmission of switching executive circuit drives external alert unit and/or supervisory control system.
Described voltage detecting circuit is AC 10V output by voltage sensor with the AC 220V input voltage step-down of standard, and output voltage changes with the variation of input voltage.
Described phase detecting circuit output voltage when three-phase potential is correct is zero, and relatively exports control signal by comparator and voltage reference, drives relay and provides malfunctioning node.
Described logic judging circuit is exported control signal corresponding and node signal when power end has abnormal state; When power end recovers just often, export control signal corresponding and node signal; When power end phase place occurs incorrect the time, directly export control signal, make and switch executive circuit and do not work.
After adopting such structure, it is simple in structure that the utility model power supply detects switching device shifter, control is sensitive, multiple functional, switching time is short, and control is reliable, real-time condition such as the input voltage by automatic detection power end, phase place, overvoltage/undervoltage, phase shortage, the phase failure, automatically realize the mutual switching between power supply, and realize switching alarm, be more suitable for extensively promoting the use of by single chip circuit.
Description of drawings
Above-mentioned only is the general introduction of technical solutions of the utility model, and for can clearer understanding technological means of the present utility model, the utility model is described in further detail below in conjunction with accompanying drawing and embodiment.
Fig. 1 is the circuit connection diagram of existing power supply switching device shifter.
Fig. 2 is the circuit composition schematic diagram that the utility model power supply detects switching device shifter.
Embodiment
See also shown in Figure 2, the utility model power supply detects switching device shifter, switch executive circuit with outside input power supply and power supply and be connected, it comprises: voltage detecting circuit, phase detecting circuit, logic judging circuit, power supply automatic switchover circuit and single-chip microcomputer warning circuit.
Wherein, voltage detecting circuit is imported power supply with the outside (three-phase four-wire system is the treatable AC low-tension of back circuit through the overvoltage sensor step-down AC220V).When external power source was input as standard A C 220V, needing to adjust sensor output voltage was AC 10V, and voltage can change with input voltage, and being input to subsequent conditioning circuit is that logic judging circuit is handled.
Phase detecting circuit is by after the simple capacitance resistance ware connection in series-parallel, input voltage is carried out phase-detection, when three-phase potential is correct, the phase detecting circuit output voltage is zero, compare by comparator and voltage reference then, the output control signal drives relay and provides malfunctioning node, uses to subsequent conditioning circuit.
Logic judging circuit is overvoltage/undervoltage, misphase, phase shortage, phase failure logic judging circuit, with various voltages and the node signal of sending after preceding two parts processing of circuit, comparison and logic analysis circuit through device inside, judge the real-time status of input power supply, realize the overvoltage to the power supply input, under-voltage, misphase, phase shortage, phase failure function.When power end has overvoltage, under-voltage, misphase, misphase, the phase failure wherein during a kind of abnormal state of affairs, output control signal corresponding and node signal use to subsequent conditioning circuit.When power end recovered normal, output control signal corresponding and node signal used to subsequent conditioning circuit.When power end phase place occurs incorrect the time, this partial circuit will directly be exported control signal, and the executive circuit of power supply is not worked.
Control signal and node signal that power supply automatic switchover circuit is sent here by the front logic judging circuit directly drive and the corresponding executive circuit of power end, realize the automatic switchover of power supply.
The single-chip microcomputer warning circuit is detected the processing logic decision circuitry and is switched the various alarm signals that executive circuit is sent here by single-chip microcomputer, realizes power supply automatic switchover alarm at last, and alarm signal is delivered to external alert unit and supervisory control system.
The mode that the utility model utilizes simple sensors, logic analysis circuit, single-chip microcomputer to combine has realized automatic detection, switching and alarm between power supply, and control is accurate, thereby is suitable for more being suitable for.
The above; it only is preferred embodiment of the present utility model; be not that the utility model is done any pro forma restriction, those skilled in the art utilize the technology contents of above-mentioned announcement to make a little simple modification, equivalent variations or modification, all drop in the protection range of the present utility model.

Claims (6)

1. a power supply detects switching device shifter, switches executive circuit with outside input power supply and power supply and is connected, and it is characterized in that comprising:
Voltage detecting circuit is with the input voltage step-down and output to logic judging circuit;
Phase detecting circuit carries out phase-detection to input voltage, and the malfunctioning node signal is outputed to logic judging circuit;
Logic judging circuit compares, analyzes the signal that receives, and judges the real-time status of input power supply, and transmits control signal and node signal to power supply automatic switchover circuit;
Power supply automatic switchover circuit according to the signal that receives, drives and the corresponding switching executive circuit of power end.
2. power supply according to claim 1 detects switching device shifter, it is characterized in that described logic judging circuit is overvoltage/undervoltage, misphase, phase shortage, phase failure logic judging circuit.
3. power supply according to claim 1 detects switching device shifter, it is characterized in that also comprising the single-chip microcomputer warning circuit, and the alarm signal according to logic judging circuit and the transmission of switching executive circuit drives external alert unit and/or supervisory control system.
4. power supply according to claim 1 detects switching device shifter, it is characterized in that described voltage detecting circuit is AC 10V output by voltage sensor with the AC 220V input voltage step-down of standard, and output voltage changes with the variation of input voltage.
5. power supply according to claim 1 detects switching device shifter, it is characterized in that described phase detecting circuit output voltage when three-phase potential is correct is zero, and relatively export control signal by comparator and voltage reference, drive relay and provide malfunctioning node.
6. power supply according to claim 1 detects switching device shifter, it is characterized in that described logic judging circuit when power end has abnormal state, output control signal corresponding and node signal; When power end recovers just often, export control signal corresponding and node signal; When power end phase place occurs incorrect the time, directly export control signal, make and switch executive circuit and do not work.
CN2011200199144U 2011-01-21 2011-01-21 Power supply detecting and switching device CN201928080U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011200199144U CN201928080U (en) 2011-01-21 2011-01-21 Power supply detecting and switching device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011200199144U CN201928080U (en) 2011-01-21 2011-01-21 Power supply detecting and switching device

Publications (1)

Publication Number Publication Date
CN201928080U true CN201928080U (en) 2011-08-10

Family

ID=44431915

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2011200199144U CN201928080U (en) 2011-01-21 2011-01-21 Power supply detecting and switching device

Country Status (1)

Country Link
CN (1) CN201928080U (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102684298A (en) * 2012-05-22 2012-09-19 沈阳亿宏信息技术有限公司 Automatic correcting protecting instrument for power supply
CN102944850A (en) * 2012-10-23 2013-02-27 中国航空工业集团公司洛阳电光设备研究所 Power supply assembly debugging device of photodetection equipment
CN103324174A (en) * 2013-06-09 2013-09-25 北京津宇嘉信科技开发有限公司 Multichannel communication acquisition system
CN103728485A (en) * 2013-09-11 2014-04-16 上海交通大学 Synchronous voltage detection device with protection function
CN105244997A (en) * 2015-10-30 2016-01-13 国家电网公司 Double power switching device for acquisition terminal
CN105652216A (en) * 2016-03-23 2016-06-08 哈尔滨飞机工业集团有限责任公司 Detection circuit for helicopter alternating current power supply system
CN107340415A (en) * 2017-07-07 2017-11-10 京东方科技集团股份有限公司 A kind of signal compensator and its method for compensating signal, signal compensation apparatus
CN109654051A (en) * 2019-03-04 2019-04-19 大唐华银电力股份有限公司金竹山火力发电分公司 A kind of high-voltage frequency converter cooling fan power supply switching circuit and switching method

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102684298A (en) * 2012-05-22 2012-09-19 沈阳亿宏信息技术有限公司 Automatic correcting protecting instrument for power supply
CN102944850A (en) * 2012-10-23 2013-02-27 中国航空工业集团公司洛阳电光设备研究所 Power supply assembly debugging device of photodetection equipment
CN102944850B (en) * 2012-10-23 2015-11-25 中国航空工业集团公司洛阳电光设备研究所 The power supply module debugging apparatus of photoelectric detection equipment
CN103324174A (en) * 2013-06-09 2013-09-25 北京津宇嘉信科技开发有限公司 Multichannel communication acquisition system
CN103728485A (en) * 2013-09-11 2014-04-16 上海交通大学 Synchronous voltage detection device with protection function
CN103728485B (en) * 2013-09-11 2017-01-18 上海交通大学 Synchronous voltage detection device with protection function
CN105244997A (en) * 2015-10-30 2016-01-13 国家电网公司 Double power switching device for acquisition terminal
CN105652216A (en) * 2016-03-23 2016-06-08 哈尔滨飞机工业集团有限责任公司 Detection circuit for helicopter alternating current power supply system
CN105652216B (en) * 2016-03-23 2018-05-29 哈尔滨飞机工业集团有限责任公司 A kind of Helicopter AC power-supply system detection circuit
CN107340415A (en) * 2017-07-07 2017-11-10 京东方科技集团股份有限公司 A kind of signal compensator and its method for compensating signal, signal compensation apparatus
US10580354B2 (en) 2017-07-07 2020-03-03 Boe Technology Group Co., Ltd. Signal compensator, signal compensation method and signal compensation system for determining and compensating signal from signal generator to display panel
CN109654051A (en) * 2019-03-04 2019-04-19 大唐华银电力股份有限公司金竹山火力发电分公司 A kind of high-voltage frequency converter cooling fan power supply switching circuit and switching method

Similar Documents

Publication Publication Date Title
US9091737B2 (en) Architecture of a battery and control device
CN101718842B (en) Monitoring method and monitoring system for touch switch
CN102866353B (en) A kind of major loop relay status pick-up unit of DC power system and method
CN203444081U (en) Monitoring and control system for permanent magnetic mechanism breaker
CA2753456C (en) Power supply control device and ventilating device using same
CN201654159U (en) Short-circuit and earth-fault indicator
CN203178410U (en) DC insulation detecting device
CN102064356A (en) Battery management system
US8928175B2 (en) Junction box, energy system and method for controlling the same
CN102374613B (en) Method for controlling power-on of air conditioner through human body induction
CN202103478U (en) Comprehensive intelligent distribution box
CN201369603Y (en) Intelligent type dual-power switching circuit
CN103376387A (en) Transmission grid fault detection system and method based on internet of thing technology
CN203056953U (en) Driver and bus capacitor discharge circuit thereof
CN101509946A (en) Phase-lacking and power down detecting method for three phase AC input power supply
CN102841599B (en) Intelligent power distribution switch control circuit fault detection circuit and detection method thereof
CN103000964B (en) Controller of battery management system
CN202888791U (en) Load controller based on zero-cross starting overvoltage protection
CN200990337Y (en) Breaker intelligent controller
CN202693700U (en) Wireless monitoring and anti-theft device for transformer
CN102856975A (en) Automatic standby power source switching system
CN201716398U (en) On-line monitoring device of vacuum circuit breaker
CN105449865A (en) Intelligent (feeder terminal unit) FTU used for fault positioning and isolating for distribution network
CN102288865A (en) Method and equipment for detecting short-circuit earth fault of transmission and distribution line
CN103675591B (en) A kind of electrokinetic cell output bus multipoint insulation fault detection circuit

Legal Events

Date Code Title Description
GR01 Patent grant
C14 Grant of patent or utility model
CP01 Change in the name or title of a patent holder

Address after: 100000, No. 1, building A, building 6, Kangding street, Daxing District economic and Technological Development Zone, Beijing, China

Patentee after: BEIJING JUNYUJIAXIN TECHNOLOGY CO., LTD.

Address before: 100000, No. 1, building A, building 6, Kangding street, Daxing District economic and Technological Development Zone, Beijing, China

Patentee before: Beijing Jinyu Jiaxin Technology Development Co., Ltd.

C56 Change in the name or address of the patentee

Owner name: BEIJING JINYU JIAXIN TECHNOLOGY CO., LTD.

Free format text: FORMER NAME: BEIJING JINYU JIAXIN TECHNOLOGY DEVELOPMENT CO., LTD.

CP01 Change in the name or title of a patent holder

Address after: 100000, No. 1, building A, building 6, Kangding street, Daxing District economic and Technological Development Zone, Beijing, China

Patentee after: BEIJING JUNYUJIAXIN TECHNOLOGY CO., LTD.

Address before: 100000, No. 1, building A, building 6, Kangding street, Daxing District economic and Technological Development Zone, Beijing, China

Patentee before: Beijing Jinyu Jiaxin Technology Development Co., Ltd.

C56 Change in the name or address of the patentee

Owner name: BEIJING JINYU JIAXIN TECHNOLOGY CO., LTD.

Free format text: FORMER NAME: BEIJING JINYU JIAXIN TECHNOLOGY DEVELOPMENT CO., LTD.

CU03 Correction of utility model patent gazette

Correction item: Patentee

Correct: Beijing Jinyu Jiaxin Technology Development Co., Ltd.|100000, No. 1, building A, building 6, Kangding street, Daxing District economic and Technological Development Zone, Beijing, China

False: BEIJING JUNYUJIAXIN TECHNOLOGY CO., LTD.|100000, No. 1, building A, building 6, Kangding street, Daxing District economic and Technological Development Zone, Beijing, China

Number: 49

Volume: 29

ERR Gazette correction

Free format text: CORRECT: PATENTEE; FROM: BEIJING JINYU JIAXIN TECHNOLOGY CO., LTD.:100000 DAXING, BEIJING TO: BEIJING JINYU JIAXIN TECHNOLOGY DEVELOPMENT CO., LTD.:100000 DAXING, BEIJING

CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20110810

Termination date: 20160121

EXPY Termination of patent right or utility model