CN2728082Y - An automatic changeover switch for power supply - Google Patents
An automatic changeover switch for power supply Download PDFInfo
- Publication number
- CN2728082Y CN2728082Y CN 200420037057 CN200420037057U CN2728082Y CN 2728082 Y CN2728082 Y CN 2728082Y CN 200420037057 CN200420037057 CN 200420037057 CN 200420037057 U CN200420037057 U CN 200420037057U CN 2728082 Y CN2728082 Y CN 2728082Y
- Authority
- CN
- China
- Prior art keywords
- power supply
- power
- circuit
- control circuit
- cpu control
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Control Of Voltage And Current In General (AREA)
- Direct Current Feeding And Distribution (AREA)
- Stand-By Power Supply Arrangements (AREA)
Abstract
The utility model relates to an automatic changeover switch, in particularly to an automatic changeover switch for power supply, comprising an electrical operation device which is composed of a two-path power supply inlet wire that is respectively connected with a main power supply and an emergency power supply, a one-path outlet wire that is connected with a load. The electrical operation device is used for switching over the main power supply and the emergency power supply. The utility model is characterized in that the changeover switch for power supply comprises a CPU control circuit, an A/D converting circuit, a power panel and a power module. The CPU control circuit is composed of a signal detection circuit used for detecting the power supply situation of the main power supply and the emergency power supply. The A/D converting circuit is used for converting the analog signal detected to a digital signal. The power panel is provided with a CPU control circuit power supply. The power module is used for amplifying the output control signal of the CPU and driving the electrical operation device.
Description
Technical field
The utility model relates to a kind of automatic transfer switch, relates in particular to a kind of automatic power switch.
Background technology
At present, the power supply of important loads such as hospital, post and telecommunications office, some industrial and mining enterprises generally can not have a power failure, in case have a power failure heavy losses can take place, even can bring personnel's injures and deaths.Dual power supply is generally all adopted in these places.In case one road power supply breaks down, can in time switch to another road power supply power supply.Be used for this duplicate supply device for switching at present, mostly adopt contactor or air switch, controlled with a large amount of relays, its control loop design is complicated, and it is loaded down with trivial details, difficult in maintenance to construct, and its poor reliability threatens to safety in production simultaneously.
Summary of the invention
The purpose of this utility model is to provide that a kind of loop is simple, easy to maintenance, the automatic power switch of good reliability.
The technical solution of the utility model: a kind of automatic power switch, comprise electrically operated institution, this electrically operated institution includes two-way electric power incoming line that connects main power source and stand-by power supply respectively and the road power outlet that is connected load, be used for switch mains power and stand-by power supply, this power change-over switch comprises a cpu control circuit, described cpu control circuit comprises signal deteching circuit, is used to detect the electric power thus supplied of main power source and stand-by power supply; The A/D change-over circuit becomes digital signal with detected analog signal conversion; Power panel, the cpu control circuit power supply; Power model, the output control signal that is used to amplify CPU drives electrically operated institution; Described cpu control circuit comprises that also a liquid crystal display circuit and a keyboard are provided with circuit, is used for being provided with and showing electrical parameter.
The utility model is monitored the AC power analog quantity in real time by a signal deteching circuit, obtain relevant electric parameter, and the processing by cpu circuit, realize the automatic switchover between main power source and the stand-by power supply, have that the loop is simple, easy to maintenance, the characteristics of good reliability.
Description of drawings
Fig. 1: the utility model electrical block diagram.
Embodiment
Embodiment 1: 1 the utility model is described in further detail in conjunction with the accompanying drawings.
The utility model power change-over switch, comprise electrically operated institution 4, this electrically operated institution 4 is used for the two-way electric power incoming line of main power source 2 and stand-by power supply 3 and is connected load 5, the present embodiment power transfer device is controlled by CPU8 and peripheral circuit thereof, the electric power thus supplied of main power source 2 and stand-by power supply 3 is carried out signals collecting by signal deteching circuit 11, and become digital signal to be input to CPU8 analog signal conversion through A/D change-over circuit 10, power panel 9 is the power supply of CPU8 and peripheral control circuit thereof, and the output of cpu circuit 8 links to each other with electrically operated institution 4 by a power model 1; The control output signal of cpu circuit drives electrically operated institution 4 after power model 1 amplifies, realize the automatic switchover of main power source 2 and stand-by power supply 3.The output of CPU8 also is connected with a liquid crystal display circuit 7 and shows corresponding electric parameter; The I/O part of cpu circuit also connects a keyboard circuit 6 is set.
Current signal is monitored the AC power analog quantity in real time by signal deteching circuit in the present embodiment, obtain relevant electric parameter, and the processing by cpu circuit, signal is amplified the rear drive electrically operated institution, realize the switching between main power source and the stand-by power supply, some electric parameters can also be reflected on the LCDs, express very directly perceived.
Claims (2)
1, a kind of automatic power switch, comprise electrically operated institution, this electrically operated institution includes two-way electric power incoming line that connects main power source and stand-by power supply respectively and the road power outlet that is connected load, be used for switch mains power and stand-by power supply, it is characterized in that this power change-over switch comprises a cpu control circuit, described cpu control circuit comprises signal deteching circuit, is used to detect the electric power thus supplied of main power source and stand-by power supply; The A/D change-over circuit becomes digital signal with detected analog signal conversion; Power panel, the cpu control circuit power supply; Power model, the output control signal that is used to amplify CPU drives electrically operated institution.
2, a kind of automatic power switch according to claim 1 is characterized in that described cpu control circuit comprises that also a liquid crystal display circuit and a keyboard are provided with circuit, is used for being provided with and showing electrical parameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420037057 CN2728082Y (en) | 2004-07-01 | 2004-07-01 | An automatic changeover switch for power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420037057 CN2728082Y (en) | 2004-07-01 | 2004-07-01 | An automatic changeover switch for power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2728082Y true CN2728082Y (en) | 2005-09-21 |
Family
ID=35044088
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420037057 Expired - Fee Related CN2728082Y (en) | 2004-07-01 | 2004-07-01 | An automatic changeover switch for power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2728082Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100365912C (en) * | 2006-03-16 | 2008-01-30 | 江苏金智科技股份有限公司 | Automatic input device and control method for emergency power supply of bus for middle-low voltage section factory |
| CN107121645A (en) * | 2017-03-23 | 2017-09-01 | 国家电网公司 | A kind of high-tension switch gear and electrical power monitoring device |
-
2004
- 2004-07-01 CN CN 200420037057 patent/CN2728082Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100365912C (en) * | 2006-03-16 | 2008-01-30 | 江苏金智科技股份有限公司 | Automatic input device and control method for emergency power supply of bus for middle-low voltage section factory |
| CN107121645A (en) * | 2017-03-23 | 2017-09-01 | 国家电网公司 | A kind of high-tension switch gear and electrical power monitoring device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050921 Termination date: 20120701 |