CN204886393U - A power control system for intelligent gas meter - Google Patents
A power control system for intelligent gas meter Download PDFInfo
- Publication number
- CN204886393U CN204886393U CN201520336906.0U CN201520336906U CN204886393U CN 204886393 U CN204886393 U CN 204886393U CN 201520336906 U CN201520336906 U CN 201520336906U CN 204886393 U CN204886393 U CN 204886393U
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- diode
- resistance
- transistor
- gas meter
- intelligent gas
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Abstract
The utility model discloses a power control system for intelligent gas meter. It includes the main power source, stand -by power supply, MOS pipe, first diode, second diode, LDO stabiliser, electric capacity, first resistance and singlechip. The utility model discloses a switching of main power source to stand -by power supply has been realized to the singlechip, has saved the hardware cost, has still realized the disconnection to worker module power supply's switch and stand -by power supply simultaneously, through the switch prescription of predetermineeing the power, the fixed point switch and the cycle of control source, the nimble control of power has been realized, the consumption of having practiced thrift the energy.
Description
Technical field
The utility model belongs to the Energy control technical field of intelligent gas meter, particularly relates to a kind of electrical source exchange for intelligent gas meter and on-off control system.
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, metal-oxide-semiconductor, the first diode, the second diode, LDO voltage stabilizer, electric capacity, the first resistance and single-chip microcomputer; Described main power source one end ground connection; The drain electrode of described metal-oxide-semiconductor is connected with the positive pole of the first diode and the other end of main power source respectively, the source electrode of metal-oxide-semiconductor is connected with the negative pole of the first diode and the negative pole of the second diode and connects power-supply system respectively, and the grid of metal-oxide-semiconductor is connected with the positive pole of the second diode and the 5th pin of LDO voltage stabilizer respectively; Described stand-by power supply one end ground connection; First pin of described LDO voltage stabilizer is connected with one end of electric capacity and the other end of stand-by power supply respectively, second pin of LDO voltage stabilizer is connected with one end of the first resistance and the other end of electric capacity and ground connection respectively, and the three-prong of LDO voltage stabilizer is connected with the other end of single-chip microcomputer and the first resistance respectively.
Further, also comprise the first transistor, transistor seconds, the second resistance, the 3rd resistance, the 3rd diode and operational module; The emitter of described the first transistor is connected with the first pin of LDO voltage stabilizer, and the collector electrode of the first transistor is connected with the positive pole of the 3rd diode, and the base stage of the first transistor is connected with one end of the second resistance; The collector electrode of described transistor seconds is connected with the other end of the second resistance, the grounded emitter of transistor seconds, and the base stage of transistor seconds is connected with one end of the 3rd resistance; The other end of described 3rd resistance is connected with single-chip microcomputer; The negative pole of described 3rd diode is connected with operational module.
Further, described LDO voltage stabilizer is with enable pin.
Further, described metal-oxide-semiconductor is PMOS.
Further, described the first transistor is PNP transistor.
Further, described transistor seconds is NPN transistor.
The beneficial effects of the utility model are: a kind of power control system for intelligent gas meter of the present utility model, the switching of main power source to stand-by power supply by chip microcontroller, save hardware cost, also achieve the disconnection of switch to operational module power supply and stand-by power supply simultaneously; By the switch timeliness of default power supply, control timing switch and the cycle of power supply, achieve the flexible control of power supply, saved the consumption of the energy.
Accompanying drawing explanation
Fig. 1 is a kind of power control system schematic diagram 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, be a kind of power control system schematic diagram for intelligent gas meter of the present utility model.For a power control system for intelligent gas meter, comprise main power source, stand-by power supply, metal-oxide-semiconductor Q, the first diode D1, the second diode D2, LDO voltage stabilizer, electric capacity C, the first resistance R1 and single-chip microcomputer.One end ground connection of main power source, the other end is connected as the drain electrode of output with metal-oxide-semiconductor Q; In order to the rush of current of the loss and metal-oxide-semiconductor Q that reduce power supply, metal-oxide-semiconductor Q and the first diode D1 is connected in parallel by the utility model, metal-oxide-semiconductor Q of the present utility model adopts PMOS, the drain electrode of metal-oxide-semiconductor Q is connected with the positive pole of the first diode D1 and the output of main power source respectively, the source electrode of metal-oxide-semiconductor Q is connected with the negative pole of the first diode D1 and the negative pole of the second diode D2 and connects power-supply system respectively, and the grid of metal-oxide-semiconductor Q is connected with the positive pole of the second diode D2 and the 5th pin of LDO voltage stabilizer respectively; One end ground connection of stand-by power supply, the other end is connected with the first pin of LDO voltage stabilizer as output; LDO voltage stabilizer of the present utility model is with enable pin, first pin of LDO voltage stabilizer is connected with one end of electric capacity C and the output of stand-by power supply respectively, second pin of LDO voltage stabilizer is connected with one end of the first resistance R1 and the other end of electric capacity C and ground connection respectively, and the three-prong of LDO voltage stabilizer is connected with the other end of single-chip microcomputer and the first resistance R1 respectively.
Based on the above-mentioned power control system for intelligent gas meter, the utility model also comprises the first transistor T1, transistor seconds T2, the second resistance R2, the 3rd resistance R3, the 3rd diode D3 and operational module.The first transistor T1 of the present utility model adopts PNP transistor, the emitter of the first transistor T1 is connected with the first pin of LDO voltage stabilizer, the collector electrode of the first transistor T1 is connected with the positive pole of the 3rd diode D3, and the base stage of the first transistor T1 is connected with one end of the second resistance R2; Transistor seconds T2 of the present utility model adopts NPN transistor, and the collector electrode of transistor seconds T2 is connected with the other end of the second resistance R2, the grounded emitter of transistor seconds T2, and the base stage of transistor seconds T2 is connected with one end of the 3rd resistance R3; The other end of the 3rd resistance R3 is connected with single-chip microcomputer; The negative pole of the 3rd diode D3 is connected with operational module.
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 microprocessor detect occurs under-voltage or disconnection to main power source, single-chip microcomputer is sent by connected CON1 and controls electric current and be passed to LDO voltage stabilizer, by the 5th pin output current after LDO voltage stabilizer is enable; Output current exports power-supply system to and continues power supply after flowing through the second diode D2 on the one hand, the grid flowing to metal-oxide-semiconductor Q on the other hand makes the grid of metal-oxide-semiconductor disconnect; Thus main power source is disconnected, achieve and powered to stand-by power supply by main power source power switching.When microprocessor detect occurs under-voltage or disconnection to stand-by power supply, single-chip microcomputer sends control electric current by connected CON1, forbids LDO voltage stabilizer work, thus stand-by power supply is disconnected from the circuit, and realizes the flexible control to power supply.
When operational module does not need work, single-chip microcomputer sends control electric current by connected CON2, electric current flows through by the first transistor T1, transistor seconds T2, the switching circuit that second resistance R2 and the 3rd resistance R3 forms, this switching circuit is disconnected, thus power supply is not powered to operational module, saved the consumption of the energy.Similar, when operational module needs work, single-chip microcomputer sends control electric current, and by the first transistor T1, the switching circuit of transistor seconds T2, the second resistance R2 and the 3rd resistance R3 composition is connected, and makes power supply continue to power to operational module.Especially, the utility model can also arrange the point or switch timeliness switching time of power supply by single-chip microcomputer, thus controls the timing switch of power supply and cycle, realizes the flexible control to power supply, has 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 (6)
1. for a power control system for intelligent gas meter, it is characterized in that, comprise main power source, stand-by power supply, metal-oxide-semiconductor, the first diode, the second diode, LDO voltage stabilizer, electric capacity, the first resistance and single-chip microcomputer; Described main power source one end ground connection; The drain electrode of described metal-oxide-semiconductor is connected with the positive pole of the first diode and the other end of main power source respectively, the source electrode of metal-oxide-semiconductor is connected with the negative pole of the first diode and the negative pole of the second diode and connects power-supply system respectively, and the grid of metal-oxide-semiconductor is connected with the positive pole of the second diode and the 5th pin of LDO voltage stabilizer respectively; Described stand-by power supply one end ground connection; First pin of described LDO voltage stabilizer is connected with one end of electric capacity and the other end of stand-by power supply respectively, second pin of LDO voltage stabilizer is connected with one end of the first resistance and the other end of electric capacity and ground connection respectively, and the three-prong of LDO voltage stabilizer is connected with the other end of single-chip microcomputer and the first resistance respectively; Control program is preset with in described single-chip microcomputer.
2. a kind of power control system for intelligent gas meter as claimed in claim 1, is characterized in that, also comprise the first transistor, transistor seconds, the second resistance, the 3rd resistance, the 3rd diode and operational module; The emitter of described the first transistor is connected with the first pin of LDO voltage stabilizer, and the collector electrode of the first transistor is connected with the positive pole of the 3rd diode, and the base stage of the first transistor is connected with one end of the second resistance; The collector electrode of described transistor seconds is connected with the other end of the second resistance, the grounded emitter of transistor seconds, and the base stage of transistor seconds is connected with one end of the 3rd resistance; The other end of described 3rd resistance is connected with single-chip microcomputer; The negative pole of described 3rd diode is connected with operational module.
3. a kind of power control system for intelligent gas meter as claimed in claim 2, it is characterized in that, described LDO voltage stabilizer is with enable pin.
4. a kind of power control system for intelligent gas meter as claimed in claim 3, it is characterized in that, described metal-oxide-semiconductor is PMOS.
5. a kind of power control system for intelligent gas meter as claimed in claim 3, it is characterized in that, described the first transistor is PNP transistor.
6. a kind of power control system for intelligent gas meter as claimed in claim 3, it is characterized in that, described transistor seconds is NPN transistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520336906.0U CN204886393U (en) | 2015-05-22 | 2015-05-22 | A power control system for intelligent gas meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520336906.0U CN204886393U (en) | 2015-05-22 | 2015-05-22 | A power control system for intelligent gas meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204886393U true CN204886393U (en) | 2015-12-16 |
Family
ID=54830714
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520336906.0U Withdrawn - After Issue CN204886393U (en) | 2015-05-22 | 2015-05-22 | A power control system for intelligent gas meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204886393U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104901413A (en) * | 2015-05-22 | 2015-09-09 | 成都前锋电子仪器有限责任公司 | Power supply control system used for intelligent gas meter |
| WO2018120908A1 (en) * | 2016-12-29 | 2018-07-05 | 珠海奥释科技有限公司 | Wireless voltage-stabilizing and current-limiting circuit for exercise bicycle that can generate electricity |
| CN112886701A (en) * | 2021-02-02 | 2021-06-01 | 河南许继仪表有限公司 | Power-down data storage power management circuit |
-
2015
- 2015-05-22 CN CN201520336906.0U patent/CN204886393U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104901413A (en) * | 2015-05-22 | 2015-09-09 | 成都前锋电子仪器有限责任公司 | Power supply control system used for intelligent gas meter |
| CN104901413B (en) * | 2015-05-22 | 2018-05-04 | 成都前锋电子仪器有限责任公司 | A kind of power control system for intelligent gas meter |
| WO2018120908A1 (en) * | 2016-12-29 | 2018-07-05 | 珠海奥释科技有限公司 | Wireless voltage-stabilizing and current-limiting circuit for exercise bicycle that can generate electricity |
| CN112886701A (en) * | 2021-02-02 | 2021-06-01 | 河南许继仪表有限公司 | Power-down data storage power management circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20151216 Effective date of abandoning: 20180504 |
|
| AV01 | Patent right actively abandoned |