CN201113551Y - Duplicate supply automatic transfer switch switching control electric appliance - Google Patents
Duplicate supply automatic transfer switch switching control electric appliance Download PDFInfo
- Publication number
- CN201113551Y CN201113551Y CNU2007200748535U CN200720074853U CN201113551Y CN 201113551 Y CN201113551 Y CN 201113551Y CN U2007200748535 U CNU2007200748535 U CN U2007200748535U CN 200720074853 U CN200720074853 U CN 200720074853U CN 201113551 Y CN201113551 Y CN 201113551Y
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
Abstract
The utility model relates to a switching control electric appliance for a double-power automatic transfer switch, comprising a control device power supply circuit and reference voltage circuit, a voltage sampling circuit, a voltage regulation and comparison circuit, a time delay setting and timing circuit, a relay drive circuit and a power supply state display circuit. The whole control device realizes the logical control function for double-power automatic switching through an optimized artificial circuit, can send out an action instruction according to the time delay time set by a user under the condition of overvoltage or under-voltage failure of a normal power supply and switches the power supply to a back-up power supply through an actuator, and solves the fluctuation problem of an output relay when normal voltage fluctuates on an overvoltage or under-voltage critical point through a comparison output feedback circuit. Simultaneously, the user can perform overvoltate setting, under-voltage setting, overvoltage time delay setting and under-voltage time delay setting according to on-site use conditions. Moreover, the switching control electric appliance can completely meet various requirements for on-site double-power automatic switching.
Description
Technical field
The utility model relates to a kind of conversion and control electrical equipment of double power supply automatic transfer switch, belongs to the low voltage electrical apparatus technology field.
Background technology
Along with development of social production, all there have been very high requirement in many industries and department to the reliability of power supply.For the continuity that guarantees to power, meeting all that some are important should be adopted dual power supply, as the indispensable device that electric energy switches, the application demand of double power supply automatic transfer switch electrical equipment more and more widely, technical performance requires also more and more higher.
Double power supply automatic transfer switch can be by different constituted modes on structure.Can also can form by 2 contactor assembly units by 2 circuit breakers.Corresponding its control mode also has different types.The control device development of double power supply automatic transfer switch roughly is divided into three phases.Phase I mainly is the conventional conversion control system that adopts the low pressure discrete device to form, and shortcoming is that volume is big, and the construction wiring is comparatively complicated, poor reliability; Second stage is to adopt the product of Analog Circuit Design, has solved most of shortcoming of discrete device, but the big multi-functional requirement that can not satisfy The field fully is subjected to certain restriction in the application; Phase III is based on the controller of digital circuit for the basis, and its function is comparatively complete, but complex circuit, cost is higher, and manufacturing process is comparatively complicated, and anti-interference is relatively poor.The technology co-existence of three phases is used type selecting for design and is brought a lot of inconvenience in market at present.
Application number discloses a kind of control device of double power supply automatic transfer switch for the patent of invention of " 200610130086.5 ", it be two principal and subordinate's d type flip flops of 4013 with a slice model is that 4001 2 input nand gates are connected the logic control function of realization double power supply automatic transfer switch that two models are adopted in this invention.This invention is simple in structure, and price is low.Realize switching but can only have or not the power supply of power supply commonly used and stand-by power supply to detect, and can not switch according to the quality of power supply.In the practical application, it is too high or low excessively supply voltage commonly used often to occur, can not normal power supply, but double-power supply switching device but can not switch to stand-by power supply.
The patent No. is the utility model patent of " 200420011262.X ", discloses a kind of single load-duplicate supply switch controller with open-phase protection.The phase shortage that the disclosed controller of this utility model patent has the three phase supply power supply detects and the protection handoff functionality, can automatically switch to stand-by power supply and continue electric when normal power source breaks down; After power up is normal, can carry out anti-switching automatically.Can satisfy the specification requirement that low-voltage power supply system switches duplicate supply.
But because this controller is by adopting a large amount of components and parts such as auxiliary relay to constitute, volume is bigger, and the tired lock of wiring, reliability are low, promote the use of and are subjected to certain limitation.
Summary of the invention
The purpose of this utility model is to provide a kind of conversion and control electrical equipment of double power supply automatic transfer switch, this device has the measuring ability to three-phase power supply commonly used, and can be according to user's setting, energy automatic time delay or moment switch to the stand-by power supply continuation to electric when using power failure always, can switch automatically after power supply commonly used is replied normally.
For achieving the above object, the technical solution of the utility model is: the conversion and control electrical equipment of this double power supply automatic transfer switch comprises that conversion and control appliances power source circuit and reference voltage circuit, voltage collection circuit, voltage are adjusted and voltage comparator circuit, delayed setting and timing circuit, relay drive circuit, power supply status display circuit.
Described power circuit and reference voltage circuit, to use a two-phase phase voltage of power supply always as input, is direct current 9V by AC transformer to, rectifier bridge and voltage stabilizing chip with the 380V ac voltage rectifier, for the The whole control device provides power supply, reference voltage circuit is the reference voltage of 3V with direct current 9V power source conversion, for voltage comparator circuit provides benchmark voltage.
Described voltage collection circuit with the three-phase voltage of power supply commonly used, is converted to direct voltage through rectifying and wave-filtering, is used for monitoring the state of power supply commonly used, and switches according to the fault state of power supply.
Described voltage is adjusted and voltage comparator circuit, carries out overvoltage and under-voltage operating value is adjusted by two potentiometers, then with the voltage gathered with adjust voltage ratio, and comparative result is handled back output control timer and relay; When changing, input signal makes the comparator upset, comparator output will feed back in the benchmark loop, control two triodes that play on-off action, be applied to the voltage of comparator reference end by variation, thereby change the threshold values of overvoltage/under-voltage comparator, the overturn point of comparator is offset, has formed and be different from general comparator circuit, solved the control device that mains fluctuations cause and exported a unstable difficult problem with big return difference;
Described delayed setting and timing circuit comprise overvoltage delayed setting potentiometer, under-voltage delayed setting potentiometer and one 556 dual timer.When overvoltage and under-voltage fault took place, 555 timers picked up counting, and send actuating signal according to overvoltage and the under-voltage delay time of adjusting, and drove relay;
Described relay drive circuit comprises triode driving, fly-wheel diode and relay.Can move according to state and user's situation of adjusting of power supply commonly used, drive actuator and carry out the power supply switching.
Whether described power supply status display circuit can have electricity by diode displaying power supply commonly used, and can indicate whether overvoltage, whether under-voltage of power supply.
The beneficial effects of the utility model: whole conversion and control electrical equipment has been realized the duplicate supply logic control function of conversion automatically by the analog circuit of optimizing.Can be in the time of power supply generation overvoltage commonly used or under-voltage fault, the delay time according to the user sets sends action command, by actuator power supply is switched to stand-by power supply.Structural design by optimizing makes volume less, good looking appearance, friendly interface.The The whole control device is selected general components and parts, and cost is lower, processing technology is simple, and is easy to use, and reliability is higher.Have certain economic benefits and social benefit.
Below in conjunction with drawings and Examples to the utility model detailed explanation of making comparisons.
Description of drawings
Fig. 1 is the structured flowchart of the conversion and control electrical equipment of double power supply automatic transfer switch of the present utility model;
Fig. 2 is the power circuit and the concrete line map of reference voltage circuit of the conversion and control electrical equipment of double power supply automatic transfer switch of the present utility model;
Fig. 3 is the concrete line map of voltage collection circuit of the conversion and control electrical equipment of double power supply automatic transfer switch of the present utility model;
Fig. 4 adjusts and the concrete line map of comparison circuit for the voltage of the conversion and control electrical equipment of double power supply automatic transfer switch of the present utility model;
Fig. 5 is the delayed setting and the concrete line map of timing circuit of the conversion and control electrical equipment of double power supply automatic transfer switch of the present utility model;
Fig. 6 is the concrete line map of relay drive circuit of the conversion and control electrical equipment of double power supply automatic transfer switch of the present utility model;
Fig. 7 is the concrete line map of open-phase protection circuit of the control transformation switch of duplicate supply of the present utility model;
Fig. 8 is the application example circuit diagram of the conversion and control electrical equipment of double power supply automatic transfer switch of the present utility model.
Embodiment
With reference to Fig. 1, this is the structured flowchart of the conversion and control electrical equipment of the utility model double power supply automatic transfer switch.
As shown in the figure, the external interface of whole conversion and control electrical equipment is input as the input of power supply commonly used, is output as the control end of power supply commonly used and stand-by power supply, there is voltage to adjust with user's interface, comprise overvoltage, under-voltage, delayed setting comprises overvoltage time-delay, under-voltage time-delay.
Conversion and control electrical equipment at first carries out rectifying and wave-filtering to the power supply commonly used that inserts and obtains working power and reference power source, and obtain voltage acquisition signal and phase failure signal after power supply commonly used handled, carry out logical process with adjust signal and delayed setting signal of voltage then, drive the switching that relay is controlled power supply commonly used and stand-by power supply by drive circuit.
With reference to Fig. 2, this is the power circuit and the concrete line map of reference voltage circuit of the conversion and control electrical equipment of double power supply automatic transfer switch.
As shown in the figure, the power supply of conversion and control electrical equipment is taken from any two-phase of power supply commonly used, and normal working voltage is AC380V, by an Industrial Frequency Transformer, voltage is reduced then, become direct current by rectifier bridge again, carry out filtering by an electrochemical capacitor, obtain the DC power supply of a low pressure.Obtain the stabilized voltage power supply of a 12V again by a LM317 pressurizer, be the working power of system.By a reference voltage chip U4, obtain the reference voltage of a 3V at last, be used for comparing with the voltage setting.
With reference to Fig. 3, this is the concrete line map of voltage collection circuit of the conversion and control electrical equipment of double power supply automatic transfer switch of the present utility model.
As shown in the figure, the three-phase voltage of power supply commonly used constitutes a rectification circuit through current-limiting resistance by 6 diodes.It exports the direct voltage that obtains the three-phase alternating voltage correspondence by the filtering of electrochemical capacitor C2, obtains the operating voltage respective value of a power supply commonly used again by a resistor voltage divider circuit that is made of R4 and R5.
With reference to Fig. 4, this is that the voltage of the conversion and control electrical equipment of double power supply automatic transfer switch of the present utility model is adjusted and the concrete line map of comparison circuit.
As shown in the figure,, surpass the overvoltage set point that the user adjusts when operating voltage is normal, during the under-voltage set point that is not lower than also that the user adjusts, Vwork＜Vovset, operational amplifier IC1A is output as low level, and IC1B is output as high level, and the overvoltage indicator light goes out; Vwork＞Vlvset, operational amplifier IC1C output low level, IC1D is output as high level, and under-voltage indicator light goes out; By the feedback of operational amplifier, Q3 is by, Q4 conducting, and R57 seals in the voltage circuit of adjusting.
When the operating voltage overvoltage, power source voltage commonly used has surpassed the overvoltage setting value that the user sets, Vwork＞Vovset, Vwork＞Vlvset, IC1A is output as high level, and IC1B is output as low level, the overvoltage indicator light is bright, and the overvoltage signal is divided into the high-low level two-way sends; The IC1C output low level, IC1D exports high level, and under-voltage indicator light goes out; Q3 and Q4 all by, all import resistance R 57 and R58 into the loop of adjusting, Vovset and Vlvset all reduce, and have guaranteed Vwork＞Vovset, have eliminated because the difficult problem of the control device shake that operating voltage causes in overvoltage critical point fluctuation.
When operating voltage was under-voltage, power source voltage commonly used was lower than the under-voltage setting value that the user sets, Vwork＜Vlvset, Vwork＜Vovset, the IC1A output low level, IC1C exports high level, and IC1B exports high level, the IC1D output low level, under-voltage indicator light is bright, and the overvoltage indicator light goes out; IC1C and IC1D send under-voltage detection signal respectively with high level and low level; The equal conducting of Q3 and Q4, R57 and R58 be all by short circuit, and the voltage resistance in circuit of adjusting reduces, electric current strengthens, and Vovset and Vlvset all raise, and have guaranteed Vwork＜Vlvset, Vwork＜Vovset has eliminated because the difficult problem that the control device that operating voltage causes in under-voltage critical point fluctuation is shaken.
With reference to Fig. 5 is the delayed setting and the concrete line map of timing circuit of the conversion and control electrical equipment of double power supply automatic transfer switch of the present utility model.
As shown in the figure, in the time of power supply generation overvoltage fault commonly used or under-voltage fault, its low level signal can be delivered to and door U1A, the U1A output low level, Q1 conducting, the U2 timer timing of starting working, two trigger ends of timer link to each other with under-voltage delayed setting with the overvoltage delayed setting respectively.The user can adjust to overvoltage time-delay and under-voltage time-delay by potentiometer RP4 and RP3 according to The field, the time then when having served as calendering, high level signal of 1OUT pin output by chip U2, when under-voltage delay arrival time, by high level signal of 2OUT pin output of chip U2.
With reference to Fig. 6, be the concrete line map of relay drive circuit of the conversion and control electrical equipment of double power supply automatic transfer switch of the present utility model.
As shown in the figure, the normally-closed contact 71,72 of its repeat circuit drive circuit, the normally opened contact 73,74 that connect stand-by power supply connects the drive circuit of power supply commonly used.When the phase failure did not take place, phase failure signal was normally closed.
When power supply commonly used just often, overvoltage signal and overvoltage time delayed signal are low level, and under-voltage and under-voltage time delayed signal also is a low level, are low with door U1B and U1C output, the Q2 conducting, power supply indicator commonly used is bright, the relay adhesive, and normally-closed contact 71,72 disconnects, the stand-by power supply excision, normally opened contact 73,74 closures, power supply commonly used inserts system's operate as normal.
When power supply generation overvoltage commonly used, and the overvoltage delay time arrives, and U1C is output as high level, Q2 by, relay discharges, and 73,74 disconnect, power supply excision commonly used, 71,72 closures, stand-by power supply inserts, and power supply indicator commonly used goes out, and system transfers stand-by power supply work to.
When power supply commonly used takes place when under-voltage, and under-voltage delay time arrives, and U1B is output as high level, Q2 by, relay discharges, and 73,74 disconnect, power supply excision commonly used, 71,72 closures, stand-by power supply inserts, and power supply indicator commonly used goes out, and system transfers stand-by power supply work to.
When power supply commonly used did not have electricity, system did not have working power, and relay discharges, 71,72 closures, and 73,74 disconnect, and stand-by power supply inserts, and system changes stand-by power supply work over to.
When power up commonly used just often, the Q2 conducting, the relay adhesive, power supply indicator commonly used is bright, power supply commonly used is devoted oneself to work, system's operate as normal.
With reference to Fig. 7, for the concrete line map of circuit is protected in the phase failure of the conversion and control electrical equipment of double power supply automatic transfer switch of the present utility model.
The open phase protection mechanism of conversion and control electrical equipment is as follows:
When power supply three-phase commonly used just often, there is direct voltage at the Re two ends among the figure, drive the light-coupled isolation conducting, send a normally closed signal, the control device operate as normal.
When the L1 that uses power supply always or the L2 phase failure, control device does not have working power, and relay discharges, and stand-by power supply puts into operation.
When using the L3 phase phase failure of power supply always, by the apolegamy of current-limiting resistance, the voltage at Re two ends is lower, can not drive the optocoupler conducting; be output as one and often open signal, as shown in Figure 6, triode Q2 can not conducting; relay discharges, and switches to stand-by power supply, thereby plays the effect of an open phase protection.
As shown in Figure 8, be the application example circuit diagram of the conversion and control electrical equipment of double power supply automatic transfer switch of the present utility model.
As shown in the figure, conversion and control electrical equipment has constituted a double power supply automatic transfer switch with two controls with protection switch CPS.Three-phase voltage input L1, the L2 of power supply commonly used, L3 be access control apparatus VAC3 respectively, the normally-closed contact 71,72 of control device and the control of stand-by power supply and protection switch KBOSL polyphone, sealed in the control of power supply commonly used and the normally-closed contact 31,32 of protection switch simultaneously, be used for having realized to the control of stand-by power supply and with the electrical interlocks of power supply commonly used; The control end of the normally opened contact 73,74 of control device and the control of power supply commonly used and protection switch polyphone has sealed in the normally-closed contact of stand-by power supply simultaneously, is used for realizing to the control of power supply commonly used and chain with stand-by power supply.
Increase a mechanical chain between two control and the protection switch; output with two controls and protection switch connects together again; so just constituted a double power supply automatic transfer switch; conversion and control electrical equipment can be according to the situation of power supply commonly used; by controlling two controls and protection switch, realize the handoff functionality of power supply commonly used and stand-by power supply.
Though the utility model is described with reference to the above embodiments; but those of ordinary skill in the art; will be appreciated that above embodiment is used for illustrating the utility model; should understand and wherein can make variations and modifications and do not break away from the utility model in a broad sense; so be not that conduct is to qualification of the present utility model; as long as in connotation scope of the present utility model, to the variation of above-described embodiment, the protection range that distortion all will fall into the utility model claim.
Claims (7)
1, a kind of conversion and control electrical equipment of double power supply automatic transfer switch, comprise that two models are that two principal and subordinate's d type flip flops of 4013 and a slice model are the device that 4001 2 input nand gates connect and compose, and is characterized in that: this conversion and control electrical equipment comprises power circuit and reference voltage circuit, voltage collection circuit, voltage is adjusted and voltage comparator circuit, delayed setting and timing circuit, relay drive circuit, power supply status display circuit;
The foregoing circuit signal transmits, at first the power supply commonly used that inserts is carried out rectified wave and obtain working power and reference power source, and obtain voltage acquisition signal and phase failure signal after power supply commonly used handled, carry out logical process with adjust signal and delayed setting signal of voltage then, drive the switching that relay is controlled power supply commonly used and stand-by power supply by drive circuit.
2, the conversion and control electrical equipment of double power supply automatic transfer switch as claimed in claim 1, it is characterized in that: described power circuit and reference voltage circuit, power supply is taken from any two-phase of power supply commonly used, with operating voltage step-down, rectification, becomes direct current, again by filtering, obtain DC power supply, obtain the stabilized voltage power supply of a 12V again by a LM317 pressurizer, at last by a reference voltage chip U4, obtain the reference voltage of a 3V, be used for comparing with the voltage setting.
3, the conversion and control electrical equipment of double power supply automatic transfer switch as claimed in claim 1, it is characterized in that: described voltage collection circuit, with three-phase voltage process current-limiting resistance, constitute a rectification circuit by 6 diodes, it exports the direct voltage that obtains the three-phase alternating voltage correspondence by the filtering of electrochemical capacitor C2, obtains the operating voltage respective value of a power supply commonly used again by a resistor voltage divider circuit that is made of R4 and R5.
4, the conversion and control electrical equipment of double power supply automatic transfer switch as claimed in claim 1, it is characterized in that: described voltage is adjusted and voltage comparator circuit, comprise overvoltage delayed setting potentiometer, under-voltage delayed setting potentiometer and one 556 dual timer, when overvoltage and under-voltage fault take place when, 556 timers pick up counting, and send actuating signal according to overvoltage and the under-voltage delay time of adjusting, drive relay; Comparator output will feed back in the benchmark loop, and the control triode changes the voltage that is applied to the comparator reference end, thereby changes the threshold values of overvoltage/under-voltage comparator, and the overturn point of comparator is offset, and forms the comparator circuit with big return difference.
5, the conversion and control electrical equipment of double power supply automatic transfer switch as claimed in claim 1, it is characterized in that: described relay drive circuit, comprise triode driving, fly-wheel diode and relay, state and user's situation of adjusting according to power supply commonly used are moved, and drive actuator and carry out the power supply switching.
6, the conversion and control electrical equipment of double power supply automatic transfer switch as claimed in claim 1, it is characterized in that: described delayed setting and timing circuit, comprise overvoltage delayed setting potentiometer, under-voltage delayed setting potentiometer and one 555 timer, when overvoltage and under-voltage fault take place when, 555 timers pick up counting, and send actuating signal according to overvoltage and the under-voltage delay time of adjusting, drive relay.
7, the conversion and control electrical equipment of double power supply automatic transfer switch as claimed in claim 1 is characterized in that: whether described power supply status display circuit has electricity by diode displaying power supply commonly used, and can indicate whether overvoltage, whether under-voltage of power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200748535U CN201113551Y (en) | 2007-09-20 | 2007-09-20 | Duplicate supply automatic transfer switch switching control electric appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200748535U CN201113551Y (en) | 2007-09-20 | 2007-09-20 | Duplicate supply automatic transfer switch switching control electric appliance |
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| Publication Number | Publication Date |
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| CN201113551Y true CN201113551Y (en) | 2008-09-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU2007200748535U Expired - Lifetime CN201113551Y (en) | 2007-09-20 | 2007-09-20 | Duplicate supply automatic transfer switch switching control electric appliance |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101944765A (en) * | 2010-11-04 | 2011-01-12 | 深圳市华意隆实业发展有限公司 | Dual-power automatic switching control device for electric welder |
| CN103401307A (en) * | 2013-07-16 | 2013-11-20 | 天津城建大学 | Dual power switching control circuit capable of delaying on and off |
| CN104682542A (en) * | 2013-11-28 | 2015-06-03 | 深圳市海洋王照明工程有限公司 | Emergency illumination lamp control circuit |
| CN104698394A (en) * | 2014-12-17 | 2015-06-10 | 施耐德万高（天津）电气设备有限公司 | Automatic alternation switch device sampling circuit |
| CN104716737A (en) * | 2015-04-04 | 2015-06-17 | 佛山蓝途科技有限公司 | Circuit for contactor type double-power-supply changeover switching appliance |
| CN107276217A (en) * | 2017-08-08 | 2017-10-20 | 安徽能测能控科技有限公司 | A kind of combined connection box of dual power supply electric quantity acquisition |
| CN107358901A (en) * | 2017-08-10 | 2017-11-17 | 天津美森电子有限公司 | A kind of digital display tube that alarm function is compared with electric current |
| CN104682541B (en) * | 2013-11-27 | 2019-03-26 | 深圳市海洋王照明工程有限公司 | A kind of emergency lamp control circuit and device |
| CN110318948A (en) * | 2019-06-10 | 2019-10-11 | 苏州能健电气有限公司 | Variable propeller pitch control based on mixing backup power supply |
| CN113131603A (en) * | 2021-04-21 | 2021-07-16 | 高奇 | Intelligent dual-power electronic fast converter and conversion method |
| CN113497477A (en) * | 2021-06-25 | 2021-10-12 | 际络科技(上海)有限公司 | Automatic-driving dual-power-supply control system and method |
-
2007
- 2007-09-20 CN CNU2007200748535U patent/CN201113551Y/en not_active Expired - Lifetime
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101944765A (en) * | 2010-11-04 | 2011-01-12 | 深圳市华意隆实业发展有限公司 | Dual-power automatic switching control device for electric welder |
| CN103401307A (en) * | 2013-07-16 | 2013-11-20 | 天津城建大学 | Dual power switching control circuit capable of delaying on and off |
| CN104682541B (en) * | 2013-11-27 | 2019-03-26 | 深圳市海洋王照明工程有限公司 | A kind of emergency lamp control circuit and device |
| CN104682542A (en) * | 2013-11-28 | 2015-06-03 | 深圳市海洋王照明工程有限公司 | Emergency illumination lamp control circuit |
| CN104682542B (en) * | 2013-11-28 | 2019-01-29 | 深圳市海洋王照明工程有限公司 | Emergency lighting lamp control circuit |
| CN104698394A (en) * | 2014-12-17 | 2015-06-10 | 施耐德万高（天津）电气设备有限公司 | Automatic alternation switch device sampling circuit |
| CN104716737A (en) * | 2015-04-04 | 2015-06-17 | 佛山蓝途科技有限公司 | Circuit for contactor type double-power-supply changeover switching appliance |
| CN107276217B (en) * | 2017-08-08 | 2024-02-27 | 安徽能测能控科技有限公司 | Combined junction box for collecting electric quantity of dual power supply |
| CN107276217A (en) * | 2017-08-08 | 2017-10-20 | 安徽能测能控科技有限公司 | A kind of combined connection box of dual power supply electric quantity acquisition |
| CN107358901A (en) * | 2017-08-10 | 2017-11-17 | 天津美森电子有限公司 | A kind of digital display tube that alarm function is compared with electric current |
| CN110318948A (en) * | 2019-06-10 | 2019-10-11 | 苏州能健电气有限公司 | Variable propeller pitch control based on mixing backup power supply |
| CN113131603A (en) * | 2021-04-21 | 2021-07-16 | 高奇 | Intelligent dual-power electronic fast converter and conversion method |
| CN113497477A (en) * | 2021-06-25 | 2021-10-12 | 际络科技(上海)有限公司 | Automatic-driving dual-power-supply control system and method |
| CN113497477B (en) * | 2021-06-25 | 2022-11-01 | 际络科技(上海)有限公司 | Automatic-driving dual-power-supply control system and method |
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