CN102751919A - Double-voltage automatic switchover switch and processing method - Google Patents
Double-voltage automatic switchover switch and processing method Download PDFInfo
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- CN102751919A CN102751919A CN2012102344175A CN201210234417A CN102751919A CN 102751919 A CN102751919 A CN 102751919A CN 2012102344175 A CN2012102344175 A CN 2012102344175A CN 201210234417 A CN201210234417 A CN 201210234417A CN 102751919 A CN102751919 A CN 102751919A
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Abstract
The invention provides a double-voltage automatic switchover switch and a processing method. The switch comprises a central control unit, an input power supply circuit, an input voltage monitoring circuit, a switching circuit, a low pressure output circuit, and a high pressure output circuit, wherein the input power supply circuit is connected with the switching circuit, and the switching circuit comprises two output ends; the two output ends are respectively connected with the low pressure output circuit and the high pressure output circuit, and the switching circuit comprises a suction type relay switch used for conducting the input power supply circuit and the low pressure output circuit or the high pressure output circuit; and the input voltage monitoring circuit is connected with the input power supply circuit so as to monitor input voltage, and the central control unit is connected with the input voltage monitoring circuit and the switching circuit so as to conduct the input power supply circuit and the low pressure output circuit or the high pressure output circuit by reading the switching circuit according to an input voltage signal. According to the switch and the method, the automatic control is adopted so as to not cause the phenomenon of equipment burning due to misoperation, and the operation complexity is reduced.
Description
Technical field
The present invention relates to circuit control technology field, relate in particular to a kind of pair of voltage automatic transfer switch and processing method.
Background technology
External a lot of country uses the single-phase mains voltage of 110V/220V/60Hz, so just causes using very inconvenient.A lot of equipment are in order to improve availability; Through transformer equipment can be worked under two kinds of voltages mostly, or adopt MTS, or the change motor mode of connection makes the motor operate as normal; But these methods all need adopt manual mode, and the user uses very inconvenience.
Existing diverter switch comprises coiling switching construction and switch switching construction.The coiling switching is meant according to the binding post in the winding diagram carries out changing-over; The shortcoming of this structure is cumbersome, and the situation of connection error appears in user easily, has certain danger.The switch switching is meant through a rearrangeable switch and realizes switching that the shortcoming person of being to use of this structure possibly bump switch by mistake and make burn-down of electric motor.
Summary of the invention
To the defective and the deficiency of the unreasonable structure of existing pair of voltage apparatus, the objective of the invention is to propose the more rational two voltage automatic transfer switchs of a kind of structure.
In order to achieve the above object, the present invention proposes a kind of pair of voltage automatic transfer switch, comprising: central controller, input power supply circuits, input voltage observation circuit, commutation circuit, low-voltage output circuit, high-voltage output circuit; Said input power supply circuits connect said commutation circuit, and said commutation circuit comprises two outputs, and said two outputs connect said low-voltage output circuit, high-voltage output circuit respectively; Said commutation circuit comprises the suction type relay switch so that said input power supply circuits and said low-voltage output circuit or high-voltage output circuit conducting; Said input voltage observation circuit connects said input power supply circuits with monitoring input voltage; Said central controller connects said input voltage observation circuit and commutation circuit, to control the said commutation circuit that reads with said input power supply circuits and said low-voltage output circuit or high-voltage output circuit conducting according to input voltage signal.
Preferred as technique scheme; Said pair of voltage automatic transfer switch also comprises input power supply circuits relay, and said input power supply circuits relay connects said central controller with the said input power supply circuits of instruction conducting/disconnection according to said central controller.
Preferred as technique scheme, said central controller comprises:
Reading unit is used to read the input voltage value that said input voltage observation circuit is measured;
Judging unit connects said reading unit to judge that whether current input voltage value is greater than predetermined threshold value;
Processing unit connects said judging unit obtaining judged result, and adjusts said commutation circuit according to judged result.
Preferred as technique scheme, said pair of voltage automatic transfer switch also comprises overload protecting circuit, said overload protecting circuit connects said central controller, so that overcurrent sends overload signal.
Preferred as technique scheme, said central controller also comprises:
The overload processing unit connects said overload protecting circuit, when receiving said overload signal, adjusts said commutation circuit and breaks off connection; And said overload processing unit also connects said input voltage observation circuit, makes said commutation circuit conducting when receiving after said input voltage disconnection reconnects.
In order to achieve the above object, the invention allows for a kind of processing method of above-mentioned two voltage automatic transfer switchs, comprising:
Step 1, monitoring input voltage;
Preferred as technique scheme, said method also comprises:
Step 4, break off input current when when overload;
The beneficial effect of the technical scheme that the embodiment of the invention provides comprises the following:
1, the present invention adopts the programming Control of central controller, and the existing hand control switch sensitivity of comparing is higher, and can not reduce the complicated operation degree because of misoperation causes burning apparatus.
Description of drawings
Fig. 1 is the modular construction sketch map of one embodiment of the invention;
Fig. 2 is the modular construction sketch map of another embodiment of the present invention;
Fig. 3 a and Fig. 3 b are the fundamental diagram of commutation circuit;
Fig. 4 is the sketch map of reduction voltage circuit and regulator rectifier circuit;
Fig. 5 is the sketch map of input current testing circuit;
Fig. 6 is the sketch map of central processing unit, low-voltage output circuit, high-voltage output circuit.
Embodiment
Below in conjunction with accompanying drawing the preferred embodiment of the present invention one is further specified.Below in conjunction with accompanying drawing and case study on implementation the present invention is done further description, certain following embodiment should not be construed as limitation of the present invention.
The present invention proposes a kind of pair of voltage automatic transfer switch, its principle such as Fig. 1, shown in Figure 2 comprise: central controller 1, input power supply circuits 2, input voltage observation circuit 3, commutation circuit 4, low-voltage output circuit 5, high-voltage output circuit 6; Said input power supply circuits 2 connect said commutation circuit 3, and said commutation circuit 4 comprises two outputs, and said two outputs connect said low-voltage output circuit 5, high-voltage output circuit 6 respectively; Said commutation circuit comprises that suction type relay switch JQX shown in Fig. 3 a and 3b is so that said input power supply circuits and said low-voltage output circuit 5 or high-voltage output circuit 6 conductings.Wherein, said input voltage observation circuit 3 connects said input power supply circuits 2 with monitoring input voltage; Said central controller 1 connects said input voltage observation circuit 3 and commutation circuit 4, to control the said commutation circuit 4 that reads according to input voltage signal with said input power supply circuits 2 and said low-voltage output circuit 5 or high-voltage output circuit 6 conductings.
Shown in Fig. 3 a and 3b, said pair of voltage automatic transfer switch also comprises input power supply circuits relay NT, and said input power supply circuits relay NT connects said central controller with the said input power supply circuits of instruction conducting/disconnection according to said central controller.
Concrete, shown in Fig. 3 a and Fig. 3 b, be that this suction type relay switch is that (Fig. 3 is a) and input circuit principle schematic of (Fig. 3 b) when being low pressure for high pressure with input circuit respectively.。
After the equipment energising, central processing unit detects input voltage.If input voltage is not more than 175V, then, make the contact be in low-voltage contact position state shown in Fig. 3 b through attracting electric relay JQX.Attracting electric relay NT makes of the present invention pair of voltage automatic transfer switch energising then, thereby is the motor power supply.If input voltage is greater than 175V, then attracting electric relay JQX makes the contact be in high voltage contact position shown in Fig. 3 a.Attracting electric relay NT makes of the present invention pair of voltage automatic transfer switch energising then, thereby is the motor power supply.
As shown in Figure 2, said central controller 1 comprises:
Reading unit 11 is used to read the input voltage value that said input voltage observation circuit is measured;
In the prior art, when motor generation overcurrent, overheated etc. overload (for example when motor rotation blockage time, the motor feels hot in the electric current increase), when reaching the break-off signal of overload protective device/electric current, the overload protective device of motor internal can break off motor is quit work.And when motor was cooled to the reset temperature of overload protection phase, then the overload protection phase can automatically reset, and motor recovers normal operating conditions.In case be easy to like this cause motor by stall, and do not find the unusual of machine operation in a very long time, the frequent switch of overload protective device meeting finally can cause overload protective device to lose efficacy, burn-down of electric motor.Therefore, as shown in Figure 2, this pair voltage automatic transfer switch also comprises overload protecting circuit 7, and said overload protecting circuit 7 connects said central controller 1, so that send overload signal during overcurrent.Wherein overload protective device belongs to ripe prior art, repeats no more at this.Simultaneously, as shown in Figure 1, also comprise at central controller:
So just the problem of the frequent switch of the sort of overload protective device in the prior art can not take place, have only when user's active deenergization and reclose Shi Caihui to work on.
Shown in Fig. 4-6, be a kind of concrete circuit diagram that the embodiment of the invention realizes.Central controller adopts PIC12F675-I/SN.Fig. 4 is the sketch map of reduction voltage circuit A and regulator rectifier circuit B; Fig. 5 is the sketch map of input current observation circuit; Fig. 6 is the sketch map 6 of central processing unit 1, low-voltage output circuit 5, high-voltage output circuit.
In order to achieve the above object, the invention allows for a kind of processing method of above-mentioned two voltage automatic transfer switchs, its flow process comprises:
Step 1, monitoring input voltage;
Step 4, break off input current when when overload;
Certainly; The present invention also can have other embodiment; Under the situation that does not deviate from spirit of the present invention and essence thereof; The person of ordinary skill in the field works as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of claim of the present invention.
Claims (7)
1. a two voltage automatic transfer switch is characterized in that, comprising: central controller, input power supply circuits, input voltage observation circuit, commutation circuit, low-voltage output circuit, high-voltage output circuit; Said input power supply circuits connect said commutation circuit, and said commutation circuit comprises two outputs, and said two outputs connect said low-voltage output circuit, high-voltage output circuit respectively; Said commutation circuit comprises the suction type relay switch so that said input power supply circuits and said low-voltage output circuit or high-voltage output circuit conducting; Said input voltage observation circuit connects said input power supply circuits with monitoring input voltage; Said central controller connects said input voltage observation circuit and commutation circuit, to control the said commutation circuit that reads with said input power supply circuits and said low-voltage output circuit or high-voltage output circuit conducting according to input voltage signal.
2. according to claim 1 pair of voltage automatic transfer switch; It is characterized in that; Said pair of voltage automatic transfer switch also comprises input power supply circuits relay, and said input power supply circuits relay connects said central controller with the said input power supply circuits of instruction conducting/disconnection according to said central controller.
3. according to claim 1 pair of voltage automatic transfer switch is characterized in that said central controller comprises:
Reading unit is used to read the input voltage value that said input voltage observation circuit is measured;
Judging unit connects said reading unit to judge that whether current input voltage value is greater than predetermined threshold value;
Processing unit connects said judging unit obtaining judged result, and adjusts said commutation circuit according to judged result.
4. according to claim 1 pair of voltage automatic transfer switch is characterized in that said pair of voltage automatic transfer switch also comprises overload protecting circuit, and said overload protecting circuit connects said central controller, so that send overload signal during overcurrent.
5. according to claim 4 pair of voltage automatic transfer switch is characterized in that said central controller also comprises:
The overload processing unit connects said overload protecting circuit, when receiving said overload signal, adjusts said commutation circuit and breaks off connection; And said overload processing unit also connects said input voltage observation circuit, makes said commutation circuit conducting when receiving after said input voltage disconnection reconnects.
6. the processing method of above-mentioned two voltage automatic transfer switchs is characterized in that, comprising:
Step 1, monitoring input voltage;
Step 2, judge that whether current input voltage is greater than predetermined threshold value; To import power supply circuits and high-voltage output circuit conducting if then control commutation circuit; Otherwise the control commutation circuit will be imported power supply circuits and low-voltage output circuit conducting.
7. the processing method of according to claim 6 pair of voltage automatic transfer switch is characterized in that, said method also comprises:
Step 3, measure current electric current through overload protecting circuit;
Step 4, break off input current when when overload;
Step 5, monitoring input voltage, when monitor said input voltage break off reconnect after, conducting input current again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2012102344175A CN102751919A (en) | 2012-07-07 | 2012-07-07 | Double-voltage automatic switchover switch and processing method |
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| CN2012102344175A CN102751919A (en) | 2012-07-07 | 2012-07-07 | Double-voltage automatic switchover switch and processing method |
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| CN102751919A true CN102751919A (en) | 2012-10-24 |
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| CN2012102344175A Pending CN102751919A (en) | 2012-07-07 | 2012-07-07 | Double-voltage automatic switchover switch and processing method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104416262A (en) * | 2013-09-02 | 2015-03-18 | 无锡精工焊接设备有限公司 | Integrated circuit system of manual welding machine |
| CN104753405A (en) * | 2013-12-31 | 2015-07-01 | Ls产电株式会社 | Method for controlling synchronous switch change in medium voltage inverter |
| CN112117999A (en) * | 2020-08-25 | 2020-12-22 | 广东美的白色家电技术创新中心有限公司 | Drive circuit and household appliance |
| CN112117999B (en) * | 2020-08-25 | 2024-07-26 | 广东美的白色家电技术创新中心有限公司 | Driving circuit and household appliance |
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| CN1003144B (en) * | 1987-02-06 | 1989-01-25 | 国营重庆无线电厂 | Voltage adaptive power circuit |
| CN2045546U (en) * | 1988-05-16 | 1989-10-04 | 昆明钢铁公司 | Full-automatic multifunction protector for electric appliances |
| US5726561A (en) * | 1996-06-24 | 1998-03-10 | Universal Power Systems, Inc. | Voltage selection apparatus and methods |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104416262A (en) * | 2013-09-02 | 2015-03-18 | 无锡精工焊接设备有限公司 | Integrated circuit system of manual welding machine |
| CN104753405A (en) * | 2013-12-31 | 2015-07-01 | Ls产电株式会社 | Method for controlling synchronous switch change in medium voltage inverter |
| CN104753405B (en) * | 2013-12-31 | 2017-05-17 | Ls产电株式会社 | Method for controlling synchronous switch change in medium voltage inverter |
| CN112117999A (en) * | 2020-08-25 | 2020-12-22 | 广东美的白色家电技术创新中心有限公司 | Drive circuit and household appliance |
| WO2022041625A1 (en) * | 2020-08-25 | 2022-03-03 | 广东美的白色家电技术创新中心有限公司 | Driving circuit and household appliance |
| CN112117999B (en) * | 2020-08-25 | 2024-07-26 | 广东美的白色家电技术创新中心有限公司 | Driving circuit and household appliance |
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| C53 | Correction of patent of invention or patent application | ||
| CB02 | Change of applicant information |
Address after: The coastal town of Leo road in Wenling city 317500 Taizhou city in Zhejiang province No. 1 Applicant after: LEO Group Co., Ltd. Address before: The coastal town of Leo road in Wenling city 317500 Taizhou city in Zhejiang province No. 1 Applicant before: Zhejiang LEO Co., Ltd. |
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Free format text: CORRECT: APPLICANT; FROM: ZHEJIANG LEO CO., LTD. TO: LEO GROUP CO., LTD. |
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Application publication date: 20121024 |