CN204425030U - For the power control system of intelligent gas meter - Google Patents
For the power control system of intelligent gas meter Download PDFInfo
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- CN204425030U CN204425030U CN201520107607.XU CN201520107607U CN204425030U CN 204425030 U CN204425030 U CN 204425030U CN 201520107607 U CN201520107607 U CN 201520107607U CN 204425030 U CN204425030 U CN 204425030U
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Abstract
The utility model discloses a kind of power control system for intelligent gas meter, specifically comprise main power source, stand-by power supply, the first transistor, transistor seconds, third transistor, the 4th transistor, the 5th transistor, the first not gate and the second not gate.In order to solve the problems such as the high and mains switch of electrical source exchange hardware cost in prior art is dumb, power control system of the present utility model, by the switching of main power source to stand-by power supply of the high level of outside and low level control realization, save hardware cost, also achieve the disconnection of switch to operational module power supply and stand-by power supply simultaneously, achieve the flexible control of power supply, save the consumption of the energy.
Description
Technical field
The utility model belongs to intelligent gas meter technical field, particularly relates to a kind of power control system for intelligent gas meter.
Background technology
Intelligent gas meter domestic at present mainly contains these several large classes such as IC-card intelligent gas meter, CPU card intelligent gas meter, radio frequency card intelligent gas meter, flow meter, direct-reading remote transmitting gas meter (wired remote-transmission table) and wireless telemetering gas-meter (amassing into), and along with the raising of people's living standard and quality of life, "smart" products demand required for modernization family, will impel intelligent gas meter towards fail safe, reliability, intelligent convenience future development.Along with the development of intelligent gas meter, the function of gas meter, flow meter gets more and more, and especially proposes new requirement to the power consumption of gas meter, flow meter adding of transporting function; A lot of intelligent gas meter power employing one main from mode, namely adopt main power source (dry cell) power under normal circumstances, when main power source off-capacity or main power source disconnect, be just switched to stand-by power supply (lithium battery) and power; Therefore just relate under there is the under-voltage or disconnection of main power source, how to be switched to stand-by power supply problem; Secondly, because main power source and stand-by power supply are all batteries, its finite capacity, therefore just seems even more important to the power management of the particularly high power consumption module of electricity consumption module in circuit.At present a lot of what adopt is hardware exchange technology, namely adopts the mode of devices at full hardware to detect the under-voltage or situation about disconnecting of main power source and automatically switches to the mode of stand-by power supply; The major defect of which is that hardware cost is high, dumb to the management of power supply in actual use.
Utility model content
Goal of the invention of the present utility model is: in order to solve the problems such as the high and mains switch of electrical source exchange hardware cost in prior art is dumb, the utility model proposes a kind of power control system for intelligent gas meter.
The technical solution of the utility model is: a kind of power control system for intelligent gas meter, comprises main power source, stand-by power supply, the first transistor, transistor seconds, third transistor, the 4th transistor, the 5th transistor, the first not gate and the second not gate; Described main power source one end ground connection, the other end is connected with the source electrode of the first transistor; The drain electrode of described the first transistor is as the output of described power control system, and grid is connected with the first not gate input; Described stand-by power supply one end ground connection, the other end is connected with the source electrode of transistor seconds; The grid of described transistor seconds is connected with the first non-gate output terminal, and drain electrode is connected with the drain electrode of the first transistor; The source electrode of described third transistor is connected with stand-by power supply, and grid is connected with the output of the second not gate; The source electrode of described 4th transistor is connected with stand-by power supply, and drain electrode connects operational module, and grid is connected with the drain electrode of third transistor and the drain electrode of the 5th transistor respectively; Outside high level output end is connected with the input of the source electrode of the 5th transistor, the input of the first not gate and the second not gate respectively, and outside low level output end is connected with the grid of the 5th transistor.
Further, described the first transistor, transistor seconds and the 5th transistor are all NMOS tube.
Further, described third transistor and the 4th transistor are all PMOS.
The beneficial effects of the utility model are: the power control system for intelligent gas meter of the present utility model, the switching of main power source to stand-by power supply is achieved by the high level of outside and low level, save hardware cost, also achieve the disconnection of switch to operational module power supply and stand-by power supply simultaneously, achieve the flexible control of power supply, save the consumption of the energy.
Accompanying drawing explanation
Fig. 1 is a kind of power control system structural representation for intelligent gas meter of the present utility model.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
As shown in Figure 1, for a kind of power control system structural representation for intelligent gas meter of the present utility model, specifically comprise main power source, stand-by power supply, the first transistor, transistor seconds, third transistor, the 4th transistor, the 5th transistor, the first not gate and the second not gate; Main power source one end ground connection, the other end is connected with the source electrode of the first transistor; The drain electrode of the first transistor is as the output of described power control system, and for connecting the power-supply system of intelligent gas meter, grid is connected with the first not gate input; Stand-by power supply one end ground connection, the other end is connected with the source electrode of transistor seconds; The grid of transistor seconds is connected with the first non-gate output terminal, and drain electrode is connected with the drain electrode of the first transistor; The source electrode of third transistor is connected with stand-by power supply, and grid is connected with the output of the second not gate; The source electrode of the 4th transistor is connected with stand-by power supply, and drain electrode connects operational module, and grid is connected with the drain electrode of third transistor and the drain electrode of the 5th transistor respectively; Outside high level output end end is connected with the input of the source electrode of the 5th transistor, the input of the first not gate and the second not gate respectively, and outside low level output end is connected with the grid of the 5th transistor.
Based on the above-mentioned power control system for intelligent gas meter, the first transistor, transistor seconds and the 5th transistor are all NMOS tube, and third transistor and the 4th transistor are all PMOS.Outside high level and low level specifically can pass through chip microcontroller, also can be realized by other existing peripheral control circuits, in the present embodiment, especially by chip microcontroller, namely export by the side a and b of single-chip microcomputer the control that high level or low level realize output voltage.
Be described further below in conjunction with the operation principle of above-mentioned particular circuit configurations to the power control system for intelligent gas meter of the present utility model.
When main power source is normal, the A end of single-chip microcomputer exports high level, the first transistor conducting, and transistor seconds ends, and main power source is powered to power-supply system, and stand-by power supply is not powered; When microprocessor detect occurs under-voltage or disconnection to main power source, the A of single-chip microcomputer holds output low level, and the first transistor ends, and transistor seconds conducting, stand-by power supply is powered to power-supply system, and main power source is not powered.Thus achieving when main power source breaks down, main power source is to the automatic switchover of stand-by power supply.
When operational module needs work, the B end of single-chip microcomputer exports high level, the 5th transistor turns, the 4th transistor turns, and stand-by power supply is powered to operational module, and operational module normally works; When operational module does not need work, the A of single-chip microcomputer holds output low level, 4th transistor cutoff, third transistor conducting, not gate, third transistor and the 5th transistor form a positive feedback loop for the grid of the 4th transistor provides high level, operational module is not worked, achieves the flexible control to power supply, saved the consumption of the energy.
Those of ordinary skill in the art will appreciate that, embodiment described here is to help reader understanding's principle of the present utility model, should be understood to that protection range of the present utility model is not limited to so special statement and embodiment.Those of ordinary skill in the art can make various other various concrete distortion and combination of not departing from the utility model essence according to these technology enlightenment disclosed in the utility model, and these distortion and combination are still in protection range of the present utility model.
Claims (3)
1. for a power control system for intelligent gas meter, it is characterized in that, comprise main power source, stand-by power supply, the first transistor, transistor seconds, third transistor, the 4th transistor, the 5th transistor, the first not gate and the second not gate; Described main power source one end ground connection, the other end is connected with the source electrode of the first transistor; The drain electrode of described the first transistor is as the output of described power control system, and grid is connected with the first not gate input; Described stand-by power supply one end ground connection, the other end is connected with the source electrode of transistor seconds; The grid of described transistor seconds is connected with the first non-gate output terminal, and drain electrode is connected with the drain electrode of the first transistor; The source electrode of described third transistor is connected with stand-by power supply, and grid is connected with the output of the second not gate; The source electrode of described 4th transistor is connected with stand-by power supply, and drain electrode connects operational module, and grid is connected with the drain electrode of third transistor and the drain electrode of the 5th transistor respectively; Outside high level output end is connected with the input of the source electrode of the 5th transistor, the input of the first not gate and the second not gate respectively, and outside low level output end is connected with the grid of the 5th transistor.
2. a kind of power control system for intelligent gas meter as claimed in claim 1, it is characterized in that, described the first transistor, transistor seconds and the 5th transistor are all NMOS tube.
3. a kind of power control system for intelligent gas meter as claimed in claim 2, it is characterized in that, described third transistor and the 4th transistor are all PMOS.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520107607.XU CN204425030U (en) | 2015-02-13 | 2015-02-13 | For the power control system of intelligent gas meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520107607.XU CN204425030U (en) | 2015-02-13 | 2015-02-13 | For the power control system of intelligent gas meter |
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| Publication Number | Publication Date |
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| CN204425030U true CN204425030U (en) | 2015-06-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520107607.XU Expired - Fee Related CN204425030U (en) | 2015-02-13 | 2015-02-13 | For the power control system of intelligent gas meter |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109253770A (en) * | 2018-11-21 | 2019-01-22 | 北京市燃气集团有限责任公司 | A kind of anti-theft type rotz flowmeter |
| CN109253763A (en) * | 2018-11-21 | 2019-01-22 | 北京市燃气集团有限责任公司 | A kind of anti-theft type turbine flowmeter |
| CN112448473A (en) * | 2021-02-01 | 2021-03-05 | 上海灵动微电子股份有限公司 | Circuit and method for protecting backup domain data |
-
2015
- 2015-02-13 CN CN201520107607.XU patent/CN204425030U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109253770A (en) * | 2018-11-21 | 2019-01-22 | 北京市燃气集团有限责任公司 | A kind of anti-theft type rotz flowmeter |
| CN109253763A (en) * | 2018-11-21 | 2019-01-22 | 北京市燃气集团有限责任公司 | A kind of anti-theft type turbine flowmeter |
| CN112448473A (en) * | 2021-02-01 | 2021-03-05 | 上海灵动微电子股份有限公司 | Circuit and method for protecting backup domain data |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150624 Termination date: 20190213 |