CN206790205U - The hardware circuit of automatic change-over controller - Google Patents
The hardware circuit of automatic change-over controller Download PDFInfo
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- CN206790205U CN206790205U CN201720187230.2U CN201720187230U CN206790205U CN 206790205 U CN206790205 U CN 206790205U CN 201720187230 U CN201720187230 U CN 201720187230U CN 206790205 U CN206790205 U CN 206790205U
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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
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Abstract
It the utility model is related to the hardware circuit of automatic change-over controller, belong to device for switching technical field, including be sequentially connected electrically minimum systematic module, voltage signal acquisition module, control handover module, human-computer interaction module, communication module, the AC220V voltages of C1, C2 phase of conventional power supply and stand-by power supply are taken in power module, and is got along in conventional power supply C1 phases, stand-by power supply C2 and power supply switch circuit is set；The voltage signal acquisition module uses electric resistance partial pressure type signal acquisition circuit；Relay K3, K4, two NPN type triodes Q4, Q5 and two diodes D27, D28 that the control handover module is connected by two interlock modes are formed；The human-computer interaction module is made up of key circuit, LED display circuit and failure alarm circuit.Compared with single channel power supply is powered, two-way power supply is used to provide operating voltage for controller, it is ensured that controller continuously works the whole individual control system power supply aspect reliability of raising.
Description
Technical field
The utility model belongs to automatic change-over technical field, is double power supply automatic transfer switch control specifically
The hardware circuit of device.
Background technology
The failure of controller in automatic change-over of the prior art is due to that controller typically takes conventional electricity mostly
Any one phase of source or stand-by power supply three-phase alternating voltage is powered for it, once power supply, which breaks down, cannot be guaranteed controller just
Often work.
Collection in automatic transfer switch controller to voltage signal at present mainly includes transformer sampling, voltage transformer
Sampling, optocoupler sampling and electric resistance partial pressure sample four kinds of modes：Wherein transformer sampling has certain antijamming capability and circuit
It is fairly simple, but under comparing, transformer sampling precision is not high, suitable for the less demanding control system of sampling precision
In；Voltage transformer samples to voltage, can significantly improve the accuracy of sampling, strong antijamming capability, still
Cost is very high；The strong antijamming capability and non-aging of optocoupler sampling；But number accuracy of detection, than relatively low, design cost is high, and electric
Hinder partial pressure sampling circuit it is simple, design cost is low, accuracy of detection is higher, therefore using electric resistance partial pressure sample, can not only drop
Low cost and it can reduce volume.
When overvoltage or under-voltage fault occurs in conventional power supply, will be loaded by the reliable switching of double power supply automatic transfer switch
Be switched to stand-by power supply from conventional mains side with ensure power supply continuity, reduce even avoid because power-off and caused by lose with
And serious consequence, wherein control switching circuit is also very important in the controls.But existing automatic change-over control
Control switching circuit stability in device processed is relatively low.
Utility model content
The purpose of this utility model is overcome the deficiencies in the prior art, there is provided automatic change-over controller
Hardware circuit.
To achieve the above object, the utility model provides following technical scheme：
The hardware circuit of automatic change-over controller is the utility model is related to, including be sequentially connected electrically
Minimum systematic module, voltage signal acquisition module, control handover module, human-computer interaction module, communication module, minimum systematic module
Including PIC single chip microcomputer, power circuit, power circuit is made up of rectifier bridge, filter capacitor, three-terminal voltage-stabilizing chip, it is characterised in that
The AC220V voltages of C1, C2 phase of conventional power supply and stand-by power supply are taken in power module, and in conventional power supply C1 phases, standby electricity
Source C2, which gets along, sets power supply switch circuit；
The voltage signal acquisition module uses electric resistance partial pressure type signal acquisition circuit；The three-phase alternating voltage of conventional power supply
Three-phase alternating voltage A2, B2, C2 of A1, B1, C1 and stand-by power supply sample through over commutation, filtering, electric resistance partial pressure mode, AD0
Corresponding conventional power supply A1 phase voltages, AD1Corresponding conventional power supply B1 phase voltages, AD2Corresponding conventional power supply C1 phase voltages, AD3 corresponds to standby
With power supply A2 phase voltages, AD4 corresponds to stand-by power supply B2 phase voltages, and AD5 corresponds to stand-by power supply C2 phase voltages；
The relay K3, K4 for controlling handover module to be connected by two interlock modes, two NPN type triodes Q4, Q5
And two diode D27, D28 compositions；The human-computer interaction module is by key circuit, LED display circuit and fault alarm electricity
Road forms,
As further scheme of the present utility model, the power circuit takes C1, C2 of conventional power supply and stand-by power supply
The AC220V voltages of phase utilize three after alternating voltage is converted to DC voltage, capacitor filtering by transformer pressure-reducing, rectifier bridge
Voltage stabilizing chip LM7812 generation direct current 12V voltages are held, are that buzzer, the relay in double power supply automatic transfer switch are powered；
Using three-terminal voltage-stabilizing chip LM7805 generation direct current 5V voltages, powered for PIC single chip microcomputer.
As further scheme of the present utility model, in the control handover module, when conventional power supply three-phase voltage is normal
When, it is load supplying by conventional power supply；When over voltage failure and normal backup power source voltage occur for conventional power supply, microprocessor
Device sends signal and enables RE2, and relay K3 obtains electric normally opened contact closure normally-closed contact and disconnected, and monophase machine A phases must be electric, and motor is just
To rotation, driving mechanical interlocking gear will load from conventional mains side and switch to standby electricity source.Controller is to conventional power supply electricity
Pressure is detected, and after conventional supply voltage recovers normal, microprocessor sends signal and enables RE3, and relay K4 obtains electric normally opened
Contact closure normally-closed contact disconnects, the B phases of monophase machine it is electric, motor rotates to opposite direction, and driving mechanical interlocking gear will be negative
Carry from stand-by power supply lateral incision and gain conventional mains side, be load supplying by conventional power supply.
As further scheme of the present utility model, the key circuit includes 4 Independent keys, is disconnected manually respectively
Open normal stand-by power supply SW-0, manual switching to conventional mains side SW-1, manual switching to standby electricity source SW-2, automatic switchover
SW-AU is connected on RE0~RE3 ports of PIC single chip microcomputer respectively.
As further scheme of the present utility model, the LED display circuit is by 13 groups of 0~LED2 of LED
Pull down resistor R20~R33 compositions are connected respectively, and 0~LED2 of LED shows conventional power supply A1, B1, C1 respectively；
LED3~LED5 shows stand-by power supply A2, B2, C2；LED6 and LED7 shows that failure cause is over-pressed and under-voltage；LED8 and LED9 show
Show manual work pattern and automatic operation mode；The power supply that LED10~LED12 is shown as load supplying is conventional power supply, standby
Power supply or non-transformer power supply.
As further scheme of the present utility model, MAX-485 chips are used in the communication interface circuit.
As further scheme of the present utility model, the PIC single chip microcomputer is PIC18F46K22 single-chip microcomputers.
Compared with prior art, good effect of the present utility model is：
1. power circuit of the present utility model take respectively conventional power supply, stand-by power supply C phases its provide operating voltage, when
Conventional power supply breaks down, and by its power supply of the C phases of stand-by power supply, avoids the situation of controller power-off, significantly carries
The high reliability of controller, ensures that controller can continuously work.And using integrated three-terminal regulator block LM7805 and
LM7812, each regulator block are individually protected to voltage overload, individually power supply, will not because of some Voltage stabilizing module failure shadow
Ring whole system normal work.Intercoupling for public power and common impedance is reduced simultaneously, significantly improves power supply
Reliability, eliminate the interference and fluctuation of dc source.
2. in control switching circuit of the present utility model, relay K3, K4 both ends difference fly-wheel diode in parallel, when
In the case that external circuit is obstructed, coil shorted on both ends can be got up with the energy of release relay coil, ensure the company of power supply
Continuous property.
Brief description of the drawings
Fig. 1 is the circuit diagram of the power circuit；
Fig. 2 is the circuit diagram of the power-switching circuit in the power circuit；
Fig. 3 is the circuit diagram of the electric resistance partial pressure type signal acquisition circuit；
Fig. 4 is the circuit diagram of the control switching circuit；
Fig. 5 is the circuit diagram of the key circuit；
Fig. 6 is the circuit diagram of the warning circuit；
Fig. 7 is the circuit diagram of the LED display circuit；
Fig. 8 is the circuit diagram of the communication interface circuit；
Fig. 9 is the fundamental diagram of automatic change-over.
Embodiment
In order that technological means, character of innovation, reached purpose and effect that the utility model is realized are easy to understand, under
Face combines and is specifically illustrating, and the utility model is expanded on further.
The hardware circuit of automatic change-over controller, including be sequentially connected electrically minimum systematic module,
Voltage signal acquisition module, control handover module, human-computer interaction module, communication module, minimum systematic module include PIC monolithics
Mechanical, electrical source circuit, power circuit are made up of rectifier bridge, filter capacitor, three-terminal voltage-stabilizing chip, and Tu1-2Zhong, the power circuit takes
The AC220V voltages of C1, C2 phase of conventional power supply and stand-by power supply change alternating voltage by transformer pressure-reducing, rectifier bridge
It is double power-supply automatic transferring to utilize three-terminal voltage-stabilizing chip LM7812 generation direct current 12V voltages after DC voltage, capacitor filtering
Buzzer, relay power supply in switch；It is PIC single chip microcomputer using three-terminal voltage-stabilizing chip LM7805 generation direct current 5V voltages
Power supply.
The AC220V voltages of C1, C2 phase of conventional power supply and stand-by power supply are taken in power module, and in conventional power supply C1
Phase, stand-by power supply C2, which get along, sets power supply switch circuit；When conventional power supply break down, by stand-by power supply phase its power supply,
The situation of controller power-off is avoided, significantly improves the reliability of controller.Ensure that controller being capable of continuous work
Make.
In Fig. 3, the voltage signal acquisition module uses electric resistance partial pressure type signal acquisition circuit；Due to A/ inside single-chip microcomputer
D modular converters are unipolar, so can just be input to single-chip microcomputer after voltage signal is converted into the unipolar analog quantitys of 0-5V
A/D modular converters.Conventional voltage detection circuit is identical with backup power source voltage detection circuit, respectively to commonly using power supply
Three-phase alternating voltage A2, B2, C2 of three-phase alternating voltage A1, B1, C1 and stand-by power supply are through over commutation, filtering, electric resistance partial pressure
Mode samples, AD0Corresponding conventional power supply A1 phase voltages, AD1Corresponding conventional power supply B1 phase voltages, AD2Corresponding conventional power supply C1 phases electricity
Pressure, AD3 correspond to stand-by power supply A2 phase voltages, and AD4 corresponds to stand-by power supply B2 phase voltages, and AD5 corresponds to stand-by power supply C2 phase voltages.
In Fig. 4, the relay K3, K4 for controlling handover module to be connected by two interlock modes, two NPN type triodes
Q4, Q5 and two diode D27, D28 compositions；In the control handover module, when conventional power supply three-phase voltage is normal, by
Conventional power supply is load supplying；When over voltage failure and normal backup power source voltage occur for conventional power supply, microprocessor is sent
Signal enables RE2, and relay K3 obtains electric normally opened contact closure normally-closed contact and disconnected, and monophase machine A phases obtain electric, positive turn of motor
Dynamic, driving mechanical interlocking gear will load from conventional mains side and switch to standby electricity source.Controller enters to conventional supply voltage
Row detection, after conventional supply voltage recovers normal, microprocessor sends signal and enables RE3, and relay K4 obtains electric normally opened contact
Normally-closed contact is closed to disconnect, the B phases of monophase machine it is electric, motor rotates to opposite direction, driving mechanical interlocking gear will load from
Stand-by power supply lateral incision gains conventional mains side, is load supplying by conventional power supply.Triode plays on-off action and amplified in figure
Single-chip microcomputer output electric current, to drive relay to make its work.Relay, a both ends difference fly-wheel diode in parallel, when
In the case of the difference of external circuit, coil shorted on both ends can be got up with the energy of release relay coil.
In Fig. 5-7, the human-computer interaction module is made up of key circuit, LED display circuit and failure alarm circuit, button
A vital part of the circuit as human-computer interaction module, user need to complete to want systemic-function by button
The setting asked, it is divided into two kinds of independent keyboard and matrix keyboard.In system by the way of free-standing button, by each button
On the man-to-man I/O mouths for being connected to PIC single chip microcomputer, each button is relatively independent when pressing, and is not interfere with each other.Stand alone type
Keyboard is suitable for the few control system of button.The key circuit includes 4 Independent keys, be respectively disconnect manually it is standing
With power supply SW-0, manual switching to conventional mains side SW-1, manual switching to standby electricity source SW-2, SW-AU points of automatic switchover
Lian Jie not be on RE0~RE3 ports of PIC single chip microcomputer.
The LED display circuit as shown in fig. 7, connect pull down resistor respectively by 13 groups of 0~LED2 of LED
R20~R33 is formed, and 0~LED2 of LED shows conventional power supply A1, B1, C1 respectively；LED3~LED5 shows standby
Power supply A2, B2, C2；LED6 and LED7 shows that failure cause is over-pressed and under-voltage；LED8 and LED9 shows manual work pattern and oneself
Start building operation mode；The power supply that LED10~LED12 is shown as load supplying is conventional power supply, stand-by power supply or non-transformer power supply.
The failure alarm circuit is as shown in fig. 6, output par, c of the warning circuit as controller, when controller detects
Controller sends alarm signal to output port RC0 when stand-by power supply breaks down, and amplifying output current by triode drives
Loudspeaker alarm, prompt user's power failure.
In Fig. 8, MAX-485 chips are used in the communication interface circuit, MAX-485 chips use half-duplex operation side
Formula, it is divided into and sends and receives two parts, communicated with 2.5Mbps transmission rate, RS-485 transmitting terminals and receiving terminal passes through
Twisted pair line connection, transmitted using differential mode.Level is between+2V to+6V between general transmission driver, and negative level is in -2V
Between to -6V.
Wherein, the PIC single chip microcomputer is PIC18F46K22 single-chip microcomputers.
It is obvious to a person skilled in the art that the utility model is not limited to the details of above-mentioned exemplary embodiment,
And in the case of without departing substantially from spirit or essential attributes of the present utility model, this practicality can be realized in other specific forms
It is new.Therefore, no matter from the point of view of which point, embodiment all should be regarded as exemplary, and is nonrestrictive, this practicality
New scope limits by appended claims rather than described above, it is intended that will fall equivalency in claim
All changes in implication and scope are included in the utility model, any reference in claim should not be considered as into limit
The involved claim of system.
Claims (7)
1. the hardware circuit of automatic change-over controller, including minimum systematic module, the electricity being sequentially connected electrically
Press signal acquisition module, control handover module, human-computer interaction module, communication module, minimum systematic module include PIC single chip microcomputer,
Power circuit, power circuit are made up of rectifier bridge, filter capacitor, three-terminal voltage-stabilizing chip, it is characterised in that are taken in power module often
Got along setting electricity with power supply and the AC220V voltages of C1, C2 phase of stand-by power supply, and in conventional power supply C1 phases, stand-by power supply C2
Source switching circuit, the voltage signal acquisition module use electric resistance partial pressure type signal acquisition circuit；It is described control handover module by
Relay K3, K4, two NPN type triodes Q4, Q5 and two diode D27, D28 compositions of two interlock mode connections；
The human-computer interaction module is made up of key circuit, LED display circuit and failure alarm circuit.
2. the hardware circuit of automatic change-over controller according to claim 1, it is characterised in that institute
Stating power circuit takes the AC220V voltages of C1, C2 phase of conventional power supply and stand-by power supply to be incited somebody to action by transformer pressure-reducing, rectifier bridge
Alternating voltage is converted to the generation direct current 12V voltages that three-terminal voltage-stabilizing chip LM7812 is utilized after DC voltage, capacitor filtering, is double
Buzzer, relay power supply in power automatic transfer switch；Using three-terminal voltage-stabilizing chip LM7805 generation direct current 5V voltages,
Powered for PIC single chip microcomputer.
3. the hardware circuit of automatic change-over controller according to claim 1, it is characterised in that institute
State in control handover module, be load supplying by conventional power supply when conventional power supply three-phase voltage is normal；When commonly using power supply
When over voltage failure and normal backup power source voltage, microprocessor sends signal and enables RE2, and relay K3 obtains electric normally opened contact
Normally-closed contact is closed to disconnect, monophase machine A phases it is electric, motor is rotated forward, and driving mechanical interlocking gear will be loaded from conventional electricity
Source switches to standby electricity source, and controller detects to conventional supply voltage, micro- after conventional supply voltage recovers normal
Processor sends signal and enables RE3, and relay K4 obtains electric normally opened contact closure normally-closed contact and disconnected, and the B phases of monophase machine must be electric,
Motor rotates to opposite direction, and driving mechanical interlocking gear will load from stand-by power supply lateral incision and gain conventional mains side, by conventional electricity
Source is load supplying.
4. the hardware circuit of automatic change-over controller according to claim 1, it is characterised in that institute
Stating key circuit includes 4 Independent keys, is to disconnect normal stand-by power supply SW-0, manual switching to conventional mains side manually respectively
On RE0~RE3 ports that SW-1, manual switching connect PIC single chip microcomputer respectively to standby electricity source SW-2, automatic switchover SW-AU.
5. the hardware circuit of automatic change-over controller according to claim 1, it is characterised in that institute
State LED display circuit and connect pull down resistor R20~R33 respectively by 13 groups of 0~LED2 of LED and form, light-emitting diodes
Pipe LED0~LED2 shows conventional power supply A1, B1, C1 respectively；LED3~LED5 shows stand-by power supply A2, B2, C2；LED6 and
LED7 shows that failure cause is over-pressed and under-voltage；LED8 and LED9 shows manual work pattern and automatic operation mode；LED10~
The power supply that LED12 is shown as load supplying is conventional power supply, stand-by power supply or non-transformer power supply.
6. the hardware circuit of automatic change-over controller according to claim 1, it is characterised in that institute
State and MAX-485 chips are used in communication interface circuit.
7. the hardware circuit of automatic change-over controller according to claim 1, it is characterised in that institute
It is PIC18F46K22 single-chip microcomputers to state PIC single chip microcomputer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720187230.2U CN206790205U (en) | 2017-02-28 | 2017-02-28 | The hardware circuit of automatic change-over controller |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720187230.2U CN206790205U (en) | 2017-02-28 | 2017-02-28 | The hardware circuit of automatic change-over controller |
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| CN206790205U true CN206790205U (en) | 2017-12-22 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110912258A (en) * | 2019-12-27 | 2020-03-24 | 常熟开关制造有限公司(原常熟开关厂） | Power supply control method for automatic transfer switch controller and automatic transfer switch |
| CN112688415A (en) * | 2020-12-16 | 2021-04-20 | 小耳朵（广东）电子科技股份有限公司 | Intelligent backup power supply and control method thereof |
| CN113161173A (en) * | 2021-03-08 | 2021-07-23 | 深圳市泰永电气科技有限公司 | Dual-power transfer switch adopting logic interlocking principle |
| CN114123473A (en) * | 2021-12-13 | 2022-03-01 | 重庆泊津科技有限公司 | Intelligent dual-power switching device for communication |
-
2017
- 2017-02-28 CN CN201720187230.2U patent/CN206790205U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110912258A (en) * | 2019-12-27 | 2020-03-24 | 常熟开关制造有限公司(原常熟开关厂） | Power supply control method for automatic transfer switch controller and automatic transfer switch |
| CN112688415A (en) * | 2020-12-16 | 2021-04-20 | 小耳朵（广东）电子科技股份有限公司 | Intelligent backup power supply and control method thereof |
| CN113161173A (en) * | 2021-03-08 | 2021-07-23 | 深圳市泰永电气科技有限公司 | Dual-power transfer switch adopting logic interlocking principle |
| CN113161173B (en) * | 2021-03-08 | 2024-01-16 | 深圳市泰永电气科技有限公司 | Dual-power transfer switch adopting logic interlocking principle |
| CN114123473A (en) * | 2021-12-13 | 2022-03-01 | 重庆泊津科技有限公司 | Intelligent dual-power switching device for communication |
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Address after: No. 98 Liukou Road, Yangliuqing Town, Xiqing District, Tianjin 300000 (No. 23 Building, No. 1 Gate 401, Xinmao Industrial New Town) Patentee after: Tianjin Tianwo Electric Co., Ltd. Address before: No. 98 Liukou Road, Yangliuqing Town, Xiqing District, Tianjin 300000 (No. 23 Building, No. 1 Gate 401, Xinmao Industrial New Town) Patentee before: Tianjin Siwo Electric Appliance Co Ltd |