CN104578382A - Small UPS (uninterrupted power supply) supplying power to video camera - Google Patents
Small UPS (uninterrupted power supply) supplying power to video camera Download PDFInfo
- Publication number
- CN104578382A CN104578382A CN201310485953.7A CN201310485953A CN104578382A CN 104578382 A CN104578382 A CN 104578382A CN 201310485953 A CN201310485953 A CN 201310485953A CN 104578382 A CN104578382 A CN 104578382A
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- resistance
- power source
- electric capacity
- switching power
- voltage stabilizing
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- 239000004065 semiconductor Substances 0.000 claims abstract description 14
- 230000000087 stabilizing Effects 0.000 claims description 32
- 239000003990 capacitor Substances 0.000 abstract 2
- 229910044991 metal oxide Inorganic materials 0.000 abstract 1
- 150000004706 metal oxides Chemical class 0.000 abstract 1
- 230000005540 biological transmission Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Abstract
The invention discloses a small UPS (uninterrupted power supply) supplying power to a video camera. The small UPS comprises a first resistor to a seventh resistor, a first capacitor to a fifth capacitor, a first Zener diode to a fourth Zener diode, a triode, a MOS (metal oxide semiconductor) tube, a battery pack, an inductor and a switching mode power supply chip. During work of the small UPS supplying power to the video camera, when the camera is connected with the external power supply, the first Zener diode is in forward bias and the switching mode power supply chip is in an idle state, the camera is powered by the external power supply all along, meanwhile, the battery pack is charged by the external power supply, the external power supply stops supplying power, the switching mode power supply chip quits the idle state immediately and is powered on continuously by the inside battery pack, and the camera can be prevented from work stopping effectively.
Description
Technical field
The present invention relates to a kind of ups power, particularly relate to a kind of small-sized ups power of powering to video frequency pick-up head.
Background technology
Video monitoring is the important component part of safety and protection system, comprises front-end camera, transmission cable, video monitoring platform, and video monitoring is directly perceived with it, accurately, timely and the information content is abundant and be widely used in many occasions.Along with the develop rapidly of computer, network and image procossing, transmission technology, the development that Video Supervision Technique is also at full speed, wherein camera is as information input part particularly important in video monitoring, it is needed to continue to record in the accidental power failure occurred once in a while, if monitoring can not be continued after a loss of power, then can reduce the fail safe of video monitoring system.
Summary of the invention
Object of the present invention is just to provide a kind of small-sized ups power of powering to video frequency pick-up head to solve the problem.
The present invention is achieved through the following technical solutions above-mentioned purpose:
A kind of small-sized ups power of powering to video frequency pick-up head, comprise the first resistance to the 7th resistance, first electric capacity is to the 5th electric capacity, first voltage stabilizing didoe is to the 4th voltage stabilizing didoe, triode, metal-oxide-semiconductor, battery pack, inductance and switching power source chip, the first end ground connection of described first resistance, second end of described first resistance is connected with the base stage of described triode and the positive pole of described first voltage stabilizing didoe respectively, the collector electrode of described triode is connected with the positive pole of described second voltage stabilizing didoe, the negative pole of described second voltage stabilizing didoe respectively with the positive pole of described battery pack, the first end of described first electric capacity is connected with the first end of described inductance, the negative pole of described battery pack is connected with the second end of described first electric capacity and the low level end of described switching power source chip and ground connection respectively, the emitter of described triode is connected with the first end of described second resistance, second end of described second resistance is connected with the negative pole of described first voltage stabilizing didoe and the positive pole of described 4th voltage stabilizing didoe and connects input voltage respectively, second end of described inductance is connected with the described positive pole of the 3rd voltage stabilizing didoe and the high level end of described switching power source chip respectively, the negative pole of described 3rd voltage stabilizing didoe respectively with the negative pole of described 4th voltage stabilizing didoe, the first end of described 3rd resistance, the first end of described 3rd electric capacity, the source electrode of described metal-oxide-semiconductor, the first end of described 4th electric capacity, the first end of described 4th resistance is connected with the output of described switching power source chip, second end ground connection of described 3rd electric capacity, second end ground connection of described 4th electric capacity, second end of described 3rd resistance is connected with the grid of described metal-oxide-semiconductor and the analog output end of described switching power source chip respectively, second end of described 4th resistance is connected with the described first end of the 5th resistance and the feedback end of described switching power source chip respectively, second end ground connection of described 5th resistance, the earth terminal ground connection of described switching power source chip, the analog input end of described switching power source chip is connected with the first end of described 7th resistance and the first end of described 6th resistance respectively, second end ground connection of described 7th resistance, second end of described 6th resistance respectively with the clock end of described switching power source chip, the drain electrode of described metal-oxide-semiconductor is connected with the first end of described 7th resistance, the first end of described 7th resistance is voltage output end, second end ground connection of described 5th electric capacity, the reference voltage terminal of described switching power source chip is connected with the first end of described second electric capacity, second end ground connection of described second electric capacity.
Beneficial effect of the present invention is:
The present invention is the small-sized ups power of powering to video frequency pick-up head, during work, when camera and external power source are connected, first voltage stabilizing didoe is that forward bias makes switching power source chip be in " free time " state, camera just all the time by external power source, simultaneously, external power source is to batteries charging, external power source is stopped power supply, and switching power source chip just can exit " free time " state immediately and continue power supply by internal battery, can effectively prevent camera from occurring out-of-work state.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of the small-sized ups power that the present invention powers to video frequency pick-up head.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described:
As shown in Figure 1, the small-sized ups power that the present invention powers to video frequency pick-up head, comprise the first resistance R1 to the 7th resistance R7, first electric capacity C1 is to the 5th electric capacity C5, first voltage stabilizing didoe D1 is to the 4th voltage stabilizing didoe D4, triode T1, metal-oxide-semiconductor T2, battery pack E, inductance L and switching power source chip IC, the first end ground connection of the first resistance R1, second end of the first resistance R1 is connected with the base stage of triode T1 and the positive pole of the first voltage stabilizing didoe D1 respectively, the collector electrode of triode T1 is connected with the positive pole of the second voltage stabilizing didoe D2, the negative pole of the second voltage stabilizing didoe D2 respectively with the positive pole of battery pack E, the first end of the first electric capacity C1 is connected with the first end of inductance L, the negative pole of battery pack E is connected with second end of the first electric capacity C1 and the low level end of switching power source chip IC and ground connection respectively, the emitter of triode T1 is connected with the first end of the second resistance R2, second end of the second resistance R2 is connected with the negative pole of the first voltage stabilizing didoe D1 and the positive pole of the 4th voltage stabilizing didoe D4 and connects input voltage respectively, second end of inductance L is connected with the positive pole of the 3rd voltage stabilizing didoe D3 and the high level end of switching power source chip IC respectively, the negative pole of the 3rd voltage stabilizing didoe D3 respectively with the negative pole of the 4th voltage stabilizing didoe D4, the first end of the 3rd resistance R3, the first end of the 3rd electric capacity C3, the source electrode of metal-oxide-semiconductor T2, the first end of the 4th electric capacity C4, the first end of the 4th resistance R4 is connected with the output of switching power source chip IC, the second end ground connection of the 3rd electric capacity C3, the second end ground connection of the 4th electric capacity C4, second end of the 3rd resistance R3 is connected with the grid of metal-oxide-semiconductor T2 and the analog output end of switching power source chip IC respectively, second end of the 4th resistance R4 is connected with the first end of the 5th resistance R5 and the feedback end of switching power source chip IC respectively, the second end ground connection of the 5th resistance R5, the earth terminal ground connection of switching power source chip IC, the analog input end of switching power source chip IC is connected with the first end of the 7th resistance R7 and the first end of the 6th resistance R6 respectively, the second end ground connection of the 7th resistance R7, second end of the 6th resistance R6 respectively with the clock end of switching power source chip IC, the drain electrode of metal-oxide-semiconductor T2 is connected with the first end of the 7th resistance R7, the first end of the 7th resistance R7 is voltage output end, the second end ground connection of the 5th electric capacity C5, the reference voltage terminal of switching power source chip IC is connected with the first end of the second electric capacity C2, the second end ground connection of the second electric capacity C2.
The present invention is as follows to the operation principle of the small-sized ups power that video frequency pick-up head is powered:
When camera and external power source are connected, first voltage stabilizing didoe D1 is that forward bias makes switching power source chip IC be in " free time " state, as long as namely the source voltage of metal-oxide-semiconductor T2 is higher than certain value, camera is all the time by external power source, meanwhile, external power source is also charged to battery pack E by the constant-current source be made up of triode T1 etc., the resistance adjusting the first resistance R1 can set charging current, make it the requirement meeting ten hours charging systems, once external power source is stopped power supply, switching power source chip IC just can exit " free time " state immediately and continue power supply by internal battery E.
Claims (1)
1. a small-sized ups power of powering to video frequency pick-up head, it is characterized in that: comprise the first resistance to the 7th resistance, first electric capacity is to the 5th electric capacity, first voltage stabilizing didoe is to the 4th voltage stabilizing didoe, triode, metal-oxide-semiconductor, battery pack, inductance and switching power source chip, the first end ground connection of described first resistance, second end of described first resistance is connected with the base stage of described triode and the positive pole of described first voltage stabilizing didoe respectively, the collector electrode of described triode is connected with the positive pole of described second voltage stabilizing didoe, the negative pole of described second voltage stabilizing didoe respectively with the positive pole of described battery pack, the first end of described first electric capacity is connected with the first end of described inductance, the negative pole of described battery pack is connected with the second end of described first electric capacity and the low level end of described switching power source chip and ground connection respectively, the emitter of described triode is connected with the first end of described second resistance, second end of described second resistance is connected with the negative pole of described first voltage stabilizing didoe and the positive pole of described 4th voltage stabilizing didoe and connects input voltage respectively, second end of described inductance is connected with the described positive pole of the 3rd voltage stabilizing didoe and the high level end of described switching power source chip respectively, the negative pole of described 3rd voltage stabilizing didoe respectively with the negative pole of described 4th voltage stabilizing didoe, the first end of described 3rd resistance, the first end of described 3rd electric capacity, the source electrode of described metal-oxide-semiconductor, the first end of described 4th electric capacity, the first end of described 4th resistance is connected with the output of described switching power source chip, second end ground connection of described 3rd electric capacity, second end ground connection of described 4th electric capacity, second end of described 3rd resistance is connected with the grid of described metal-oxide-semiconductor and the analog output end of described switching power source chip respectively, second end of described 4th resistance is connected with the described first end of the 5th resistance and the feedback end of described switching power source chip respectively, second end ground connection of described 5th resistance, the earth terminal ground connection of described switching power source chip, the analog input end of described switching power source chip is connected with the first end of described 7th resistance and the first end of described 6th resistance respectively, second end ground connection of described 7th resistance, second end of described 6th resistance respectively with the clock end of described switching power source chip, the drain electrode of described metal-oxide-semiconductor is connected with the first end of described 7th resistance, the first end of described 7th resistance is voltage output end, second end ground connection of described 5th electric capacity, the reference voltage terminal of described switching power source chip is connected with the first end of described second electric capacity, second end ground connection of described second electric capacity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310485953.7A CN104578382A (en) | 2013-10-16 | 2013-10-16 | Small UPS (uninterrupted power supply) supplying power to video camera |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310485953.7A CN104578382A (en) | 2013-10-16 | 2013-10-16 | Small UPS (uninterrupted power supply) supplying power to video camera |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104578382A true CN104578382A (en) | 2015-04-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310485953.7A Pending CN104578382A (en) | 2013-10-16 | 2013-10-16 | Small UPS (uninterrupted power supply) supplying power to video camera |
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| CN (1) | CN104578382A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108230582A (en) * | 2018-01-03 | 2018-06-29 | 广州爱易学智能信息科技有限公司 | Library management system with warning function |
| CN113872276A (en) * | 2021-09-24 | 2021-12-31 | 福莱盈电子股份有限公司 | Camera module power supply battery system |
-
2013
- 2013-10-16 CN CN201310485953.7A patent/CN104578382A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108230582A (en) * | 2018-01-03 | 2018-06-29 | 广州爱易学智能信息科技有限公司 | Library management system with warning function |
| CN113872276A (en) * | 2021-09-24 | 2021-12-31 | 福莱盈电子股份有限公司 | Camera module power supply battery system |
| CN113872276B (en) * | 2021-09-24 | 2022-09-09 | 福莱盈电子股份有限公司 | Camera module power supply battery system |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150429 |
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| WD01 | Invention patent application deemed withdrawn after publication |