CN201867896U - Card-inserted prepayment gas meter - Google Patents
Card-inserted prepayment gas meter Download PDFInfo
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- CN201867896U CN201867896U CN2010205753211U CN201020575321U CN201867896U CN 201867896 U CN201867896 U CN 201867896U CN 2010205753211 U CN2010205753211 U CN 2010205753211U CN 201020575321 U CN201020575321 U CN 201020575321U CN 201867896 U CN201867896 U CN 201867896U
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- triode
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Abstract
The utility model relates to a card-inserted prepayment gas meter, which comprises a meter shell, a transmission mechanism and a circuit-board assembly, wherein the circuit-board assembly comprises a CPU (Central Processing Unit), a warning-circuit module, a power-supply voltage detecting module, a counting and sampling circuit module, a discharge and disassembly detecting module, a valve-driving circuit module, an IC (Integrated Circuit) card interface circuit module and an LCD (Liquid Crystal Display) display module, wherein one port of the power-supply voltage detecting module is connected with the valve-driving circuit module, and a valve driving circuit comprises a plurality of triodes, a plurality of resistors, a capacitor, voltage-stabilizing diodes and a driving motor, wherein the resistors, the capacitor, the voltage-stabilizing diodes and the driving motor are matched with and are effectively connected with the triodes. The card-inserted prepayment gas meter has the beneficial effects that the valve-driving circuit module of the gas meter is applicable to lower drive current, the working efficiency can be effectively improved, and the fault rate is decreased.
Description
Technical field
The utility model is specifically related to a kind of card insert type prepayment diaphragm gas meter.
Background technology
As everyone knows, the card insert type prepayment diaphragm gas meter is mainly by watchcase, gear train and circuit board module constitute, wherein measure by the circuit board module driving switch, and circuit board module is split to close by CPU by-pass valve control driving circuit and is driven, existing valve driving circuit has four triodes that play the power amplifier effect at the most because of it on the market, the drive current that causes the required CPU of this valve driving circuit to provide is minimum to be 5mA, in case and the drive current that CPU provides is when being lower than 5mA, can't driver's valve gate drive circuit operate as normal, improved failure rate, thereby limitation has been lived the working efficiency of this gas meter, flow meter greatly, and the scope of application is very narrow.
Summary of the invention
The purpose of this utility model is to overcome the defective of prior art, provides a kind of and is suitable for lower drive current and can effectively improves working efficiency and the card insert type prepayment diaphragm gas meter of reduction failure rate.
For achieving the above object, the utility model adopts a kind of card insert type prepayment diaphragm gas meter, comprise watchcase, gear train and circuit board module, wherein circuit board module comprises CPU, the warning circuit module, the supply voltage detection module, counting sample circuit module, put and open and inspect the survey module, the valve driving circuit module, IC-card interface module and LCD display module, wherein provide one of them port of the supply voltage detection module of electric energy to connect the PVCC port of valve driving circuit module, described valve driving circuit module comprises first triode, second triode, the 3rd triode, the 4th triode, the 5th triode and the 6th triode, first stabilivolt and second stabilivolt and electric capacity and first resistance, second resistance, the 3rd resistance, the 4th resistance, the 5th resistance, the 6th resistance, the 7th resistance and the 8th resistance and the 9th resistance, the physical circuit of described valve driving circuit connects as follows: the wherein circuit that the PVCC port picks out inserts the collector of the 5th triode via the emitter of the collector of the 3rd triode and the 3rd triode, and picks out from the emitter of the 5th triode, ground connection; Another circuit that the PVCC port picks out inserts the collector of the 4th triode via the emitter of the collector of the 6th triode and the 6th triode, and from the emitter of the 4th triode pick out, ground connection; The base stage of wherein said the 3rd triode connects the collector of first triode via the 8th resistance, and picks out from the emitter of first triode, inserts the base stage of the 4th triode then; The base stage of described the 6th triode connects the collector of second triode via the 9th resistance, and picks out from the emitter of second triode, inserts the base stage of the 5th triode then; Wherein the base stage of first triode inserts the P1.5 interface of CPU, and the base stage of second triode inserts the P1.6 interface of CPU; Be connected with drive motor between the collector of the collector of described the 4th triode and the 5th triode.
The utility model is by the improvement to prior art, owing in original valve driving circuit, set up first triode and second triode, and carried out effective circuit with former valve driving circuit and be connected, make that the power amplifier multiple of this valve driving circuit is bigger, can be suitable for littler drive current, test shows that the valve driving circuit of this programme requires the minimum 100uA of reaching to the driving of drive current.
Description of drawings
Fig. 1 is the utility model embodiment functional-block diagram.
Fig. 2 is the circuit diagram of valve driving circuit module among the utility model embodiment.
Embodiment
Shown in Fig. 1-2, specific embodiment of the utility model is a kind of card insert type prepayment diaphragm gas meter, comprise watchcase, gear train and circuit board module, wherein circuit board module comprises CPU, the warning circuit module, the supply voltage detection module, counting sample circuit module, put and open and inspect the survey module, the valve driving circuit module, IC-card interface module and LCD display module, wherein provide one of them port of the supply voltage detection module of electric energy to connect the PVCC port of valve driving circuit module, described valve driving circuit module comprises the first triode Q1, the second triode Q2, the 3rd triode Q3, the 4th triode Q4, the 5th triode Q5 and the 6th triode Q6, the first stabilivolt D1 and the second stabilivolt D2 and capacitor C 10 and first resistance R 1, second resistance R 2, the 3rd resistance R 3, the 4th resistance R 4, the 5th resistance R 5, the 6th resistance R 6 and the 7th resistance R 7, the physical circuit of described valve driving circuit connects as follows: the wherein circuit that the PVCC port picks out inserts the collector of the 5th triode Q5 via the emitter of the collector of the 3rd triode Q3 and the 3rd triode Q3, and picks out from the emitter of the 5th triode Q5, ground connection; Another circuit that the PVCC port picks out inserts the collector of the 4th triode Q4 via the emitter of the collector of the 6th triode Q6 and the 6th triode Q6, and from the emitter of the 4th triode Q4 pick out, ground connection; The base stage of wherein said the 3rd triode Q3 connects the collector of the first triode Q1 via the 8th resistance R 8, and picks out from the emitter of the first triode Q1, inserts the base stage of the 4th triode Q4 then; The base stage of described the 6th triode Q6 connects the collector of the second triode Q2 via the 9th resistance R 9, and picks out from the emitter of the second triode Q2, inserts the base stage of the 5th triode Q5 then; Wherein the base stage of the first triode Q1 inserts the P1.5 interface of CPU, and the base stage of the second triode Q2 inserts the P1.6 interface of CPU; Be connected with drive motor M between the collector of the collector of described the 4th triode Q4 and the 5th triode Q5.
By Fig. 2 also as can be known, wherein said the 7th resistance R 7 is connected in series with drive motor M; Described capacitor C 10 is connected in parallel on the 7th resistance R 7 and drive motor M two ends of serial connection; Connect voltage stabilizing diode D1, D2 between the emitter of described the 3rd triode Q3 and the 6th triode Q6 by described two serial connections; Wherein the 3rd resistance R 3 two ends are connected between the base stage and collector of the 3rd triode Q3, the two ends of the 4th resistance R 4 connect respectively between the 4th triode Q4 base stage and the emitter, the two ends of the 5th resistance R 5 are connected between the base stage and emitter of the 5th triode Q5, and the two ends of the 6th resistance R 6 are connected between the base stage and collector of the 6th triode Q6; The base stage of the wherein said first triode Q1 is by the P1.5 interface of first resistance R, 1 access CPU, and the base stage of the described second triode Q2 inserts the P1.6 interface of CPU by second resistance R 2.
Obviously; the utility model not only is confined to the protection scheme of described embodiment; so long as the foreseeable improvement of being amplified out based on spirit of the present utility model; reach lower requirement of drive current etc. such as the number that only increases triode; these can embody in the technical solution of the utility model, so this improvement also all falls among the technical protection scope of the present utility model.
Claims (2)
1. card insert type prepayment diaphragm gas meter, comprise watchcase, gear train and circuit board module, wherein circuit board module comprises CPU, the warning circuit module, the supply voltage detection module, counting sample circuit module, put and open and inspect the survey module, the valve driving circuit module, IC-card interface module and LCD display module, wherein provide one of them port of the supply voltage detection module of electric energy to connect the PVCC port of valve driving circuit module, it is characterized in that: described valve driving circuit module comprises first triode, second triode, the 3rd triode, the 4th triode, the 5th triode and the 6th triode, first stabilivolt and second stabilivolt and electric capacity and first resistance, second resistance, the 3rd resistance, the 4th resistance, the 5th resistance, the 6th resistance, the 7th resistance and the 8th resistance and the 9th resistance, the physical circuit of described valve driving circuit connects as follows: the wherein circuit that the PVCC port picks out inserts the collector of the 5th triode via the emitter of the collector of the 3rd triode and the 3rd triode, and picks out from the emitter of the 5th triode, ground connection; Another circuit that the PVCC port picks out inserts the collector of the 4th triode via the emitter of the collector of the 6th triode and the 6th triode, and from the emitter of the 4th triode pick out, ground connection; The base stage of wherein said the 3rd triode connects the collector of first triode via the 8th resistance, and picks out from the emitter of first triode, inserts the base stage of the 4th triode then; The base stage of described the 6th triode connects the collector of second triode via the 9th resistance, and picks out from the emitter of second triode, inserts the base stage of the 5th triode then; Wherein the base stage of first triode inserts the P1.5 interface of CPU, and the base stage of second triode inserts the P1.6 interface of CPU; Be connected with drive motor between the collector of the collector of described the 4th triode and the 5th triode.
2. card insert type prepayment diaphragm gas meter according to claim 1 is characterized in that: described the 7th resistance and drive motor are connected in series; Described electric capacity is connected in parallel on the 7th resistance and the drive motor two ends of serial connection; Connect voltage stabilizing diode between the emitter of described the 3rd triode and the 6th triode by described two serial connections; Wherein the 3rd resistance two ends are connected between the base stage and collector of the 3rd triode, the two ends of the 4th resistance connect respectively between the 4th transistor base and the emitter, the two ends of the 5th resistance are connected between the base stage and emitter of the 5th triode, and the two ends of the 6th resistance are connected between the base stage and collector of the 6th triode; The base stage of wherein said first triode is by the P1.5 interface of first resistance access CPU, and the base stage of described second triode inserts the P1.6 interface of CPU by second resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205753211U CN201867896U (en) | 2010-10-20 | 2010-10-20 | Card-inserted prepayment gas meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205753211U CN201867896U (en) | 2010-10-20 | 2010-10-20 | Card-inserted prepayment gas meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201867896U true CN201867896U (en) | 2011-06-15 |
Family
ID=44139046
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205753211U Expired - Fee Related CN201867896U (en) | 2010-10-20 | 2010-10-20 | Card-inserted prepayment gas meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201867896U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105725820A (en) * | 2016-03-30 | 2016-07-06 | 苏州合欣美电子科技有限公司 | Electronically-controlled driving type cooking pot |
-
2010
- 2010-10-20 CN CN2010205753211U patent/CN201867896U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105725820A (en) * | 2016-03-30 | 2016-07-06 | 苏州合欣美电子科技有限公司 | Electronically-controlled driving type cooking pot |
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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 |
Granted publication date: 20110615 Termination date: 20161020 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |