CN201047765Y - Electronic type pre-payment IC card carrier gas meter - Google Patents
Electronic type pre-payment IC card carrier gas meter Download PDFInfo
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- CN201047765Y CN201047765Y CNU2007201015476U CN200720101547U CN201047765Y CN 201047765 Y CN201047765 Y CN 201047765Y CN U2007201015476 U CNU2007201015476 U CN U2007201015476U CN 200720101547 U CN200720101547 U CN 200720101547U CN 201047765 Y CN201047765 Y CN 201047765Y
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Abstract
The utility model relates to a prepayment single phase IC card wave-carrying fuel gas meter, belonging to the technical field of mensuration. The utility model which is used to prevent embezzlement of fuel gas has the technical proposal that the fuel gas meter is composed of an AC/DC power supply circuit, a flow sensor, a single chip microcomputer, a carrier transceiving coupled circuit, a LCD display, an IC card reading and writing controlling circuit, an electric valve controlling circuit and an adjustment circuit. The flow sensor is composed of an magnetic impeller and a tongue tube which are both arranged in a fuel gas tube; the carrier transceiving coupled circuit is composed of a coupling transformer, a carrier signal receiving circuit and a carrier signal sending circuit; and the electric valve controlling circuit is composed of a bistability electromagnetic valve and a bidirectional driver. The utility model can monitor the gas consumption information of the user and control the gas supply pipeline while measuring consumed gas volume, thus embezzlement of gas can be found and prevented in time, thereby not only economic lose can be decreased, but also accidents can be prevent from occurring.
Description
Technical field
The utility model relates to a kind of prepayment IC-card gas meter, flow meter, has gas-robbery resistence and power carrier communication function, belongs to field of measuring techniques.
Background technology
Combustion gas is the indispensable energy in industrial and agricultural production and the people's daily life, and in order to make rational planning for gas consumption and collect the combustion gas expense, gas meter, flow meter has been installed by combustion gas (rock gas, coal gas) supply department in steam line, so that the gas consumption of metering user.Original gas meter, flow meter is progressively replaced by the IC-card gas meter, flow meter because of the difficulty of charging.The IC-card gas meter, flow meter can solve the problem of difficult charge well, but it does not have monitoring function, under the ordering about of economic interests, often has the people to open the IC-card gas meter, flow meter privately, and circuit is reequiped in the his-and-hers watches, to reach surreptitiously gas purpose.After the IC-card gas meter, flow meter is reequiped, can not find in time that generally this has not only caused economic loss to country, but also can bring gas leakage, accident potential such as catch fire, the people's safety of life and property in serious threat.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, a kind of electronic prepayment IC-card carrier wave gas meter, flow meter with gas-robbery resistence and power carrier communication function is provided.
Problem of the present utility model realizes with following technical proposals:
A kind of electronic prepayment IC-card carrier wave gas meter, flow meter, be made up of alterating and direct current source circuit, flow sensor, single-chip microcomputer U4, carrier transmitting-receiving coupled circuit, calibration circuit, LCD display U3, IC-card read-write control circuit, motorized valve control circuit and calibration circuit, the formation and the annexation of each several part circuit are as follows:
A. flow sensor is made up of the magnetic impeller and the tongue tube K that are installed in the Gas Pipe, tongue tube K with connect direct supply after a resistance R 9 is connected, the pulse signal of their serial connection point output connects 9 pin of single-chip microcomputer U4 through a photoelectrical coupler U1;
B. the carrier transmitting-receiving coupled circuit is made up of coupling transformer T, carrier signal receiving circuit and carrier signal transtation mission circuit, the primary coil of described coupling transformer T is connected to through a capacitor C 3 between the phase line and zero line of single-phase alternating current, and secondary coil is carried ripple signal receiving circuit and carrier signal transtation mission circuit; Described carrier signal receiving circuit by the triode T5 that is connected into common-emitter amplifier with and collector load resistor R7, upper offset resistance R 5, below-center offset resistance R 6, repeating resistance R4 constitute, the base stage of triode T5 meets coupling transformer T through repeating resistance R4, the output signal of its collector connects the SIGin end of single-chip microcomputer, also is connected to two antiparallel diodes between the base stage of triode T5 and the emitter; Described carrier signal transtation mission circuit comprises four triodes, be respectively the first triode T1, the second triode T2, the 3rd triode T3 and the 4th triode T4, wherein the first triode T1 and the second triode T2 are connected into the OTL power amplifier, its output terminal meets coupling transformer T through a capacitor C 4 and an inductance L, the complementary amplifier that the 3rd triode T3 and the 4th triode T4 are connected into is the promotion level of above-mentioned OTL power amplifier, and the base stage of the 3rd triode T3 and the 4th triode T4 connects the PSKout end of single-chip microcomputer respectively through a resaistance-capacity coupling circuit;
Pin 1～pin 4 of c.LCD display U3 meets pin COM1～pin COM4 of single-chip microcomputer U4 respectively, and pin 5～pin 28 of LCD display U3 meets the pin S0～pin S23 of single-chip microcomputer respectively;
D.IC card read-write control circuit connects the pin RX end of single-chip microcomputer U4;
E. motorized valve control circuit is made of bistable electromagnetic valve DF and bidirectional drive U2, the INA of bidirectional drive U2, INB end connects RON, the ROFF end of single-chip microcomputer respectively, the coil of the CKA of bidirectional drive U2, CKB termination solenoid valve DF, resistance R 3 in parallel on the coil of solenoid valve DF;
F. the calibration circuit is made up of photoelectrical coupler U5 and triode T6, triode T6 is connected into the common emitter amplifying circuit, its collector connects positive source through light emitting diode and a current-limiting resistance R11 of photoelectrical coupler U5, base stage connects 42 pin end of single-chip microcomputer, the output termination instrument calibration XB of the photoelectric tube of photoelectrical coupler U5 through a biasing resistor R10.
The utility model utilizes flow sensor to gather the gas flow signal, and this signal is delivered to single-chip microcomputer, carries out the gas quantity metering by single-chip microcomputer, and will measure the result and be presented on the LCD display.When the user purchased tolerance and is zero, single-chip microcomputer output motorized valve control signal made for fuel gas pipeline and closes, and had only after the user purchases combustion gas and IC-card inserted draw-in groove, and single-chip microcomputer just can make for Gas Pipe and connect, and recovers air feed.Single-chip microcomputer also sends to counting cost by gas meter administrative center with the user with gas information by the carrier transmitting-receiving coupled circuit, and acceptance is from the control information of counting cost by gas meter administrative center, like this, when the illegal steal combustion gas of user, counting cost by gas meter administrative center just can in time find, and send the control signal of dying, stop steal combustion gas behavior.After the staff restores gas meter, flow meter, sent by the center of checking meter and to send the combustion gas signal, recover air feed, the calibration circuit can be proofreaied and correct instrument.The utility model is in the metering gas consumption, can be to the monitoring of user with gas information, and can control supply air line, thereby can in time find and prevent steal combustion gas behavior, not only for country has reduced economic loss, and avoided the generation of accident.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is an electric theory diagram of the present utility model;
Fig. 2 is an electrical schematic diagram.
Each label is among the figure: U1. photoelectrical coupler, U2. bidirectional drive, U3.LCD display, U4. single-chip microcomputer .U5. photoelectrical coupler, XB. instrument calibration.
Embodiment
Among Fig. 2, flow sensor is the basis of realizing correct metering.In the existing analog gas meter, flow meter, the rotary wind type gas meter, flow meter is simple in structure, measurement range is wide, highly sensitive, physical dimension is little, so the flow sensor of this gas meter, flow meter also is based on the rotary wind type structure of simulation gas meter, flow meter, by magnet steel and miniature tongue tube are installed on impeller, convert the rotation of impeller to electric impulse signal, count to realize frequency pulse, and then realize the metering of gas flow.Single-chip microcomputer sh701 has carrier communication and motorized valve control function, the reliability height, and resistance R 8 is photoelectric tube collector load resistors in the photoelectrical coupler.
This gas meter, flow meter adopts and hands over/straight double-purpose electric source.Gas meter, flow meter is powered by the output of the miniature transformer in the table by alternating current at ordinary times, and reserve battery is in charged state.In case have a power failure, gas meter, flow meter is just powered by internal backup battery.
The course of work of carrier communication circuit: under normal circumstances, the center of checking meter is sent and is opened modulation signal, signal is delivered to carrier communication circuit by line of electric force, this signal enters coupling transformer T through high-pass filtering capacitor C3, the signal of coupling transformer T output enters the common-emitter amplifier of being made up of triode T5 through resistance R 4, signal after the amplification enters single-chip microcomputer and carries out demodulation, and single-chip microcomputer output motorized valve control signal is connected fuel gas pipeline.The effect of inverse parallel diode D1, D2 is to the input signal amplitude limit.Single-chip microcomputer is delivered to the PSKout end to the modulation signal that contains the gas meter, flow meter job information, this signal is respectively through capacitor C 1, with resistance R 1,2 two resaistance-capacity coupling circuits of capacitor C 2 and resistance R are sent to triode T3, the base stage of T4, by triode T3, T4 is amplified into by triode T1, the OTL power amplifier that T2 forms amplifies, signal after the amplification is through capacitor C 4, inductance L is delivered to coupling transformer T, then through high-pass filtering capacitor C1, line of electric force is delivered to the center of checking meter, and the staff at the center of checking meter can judge according to the information of collecting whether gas meter, flow meter work is normal.Illegally transform gas meter, flow meter as the people, when using combustion gas under not purchasing the combustion gas situation, the staff at the center of checking meter just can in time find, take anti-theft measure.
The model of each integrated package is among the figure: U1 is NEC2501, and U2 is XC2023, and U3 is LCD-JY04004, and U4 is that sh701, U5 are NEC2501.
Claims (1)
1. electronic prepayment IC-card carrier wave gas meter, flow meter, it is characterized in that, it is become by alterating and direct current source circuit, flow sensor, single-chip microcomputer (U4), carrier transmitting-receiving coupled circuit, LCD display (U3), IC-card read-write control circuit and motorized valve control circuit bank, and the formation and the annexation of each several part circuit are as follows:
A. flow sensor is made up of the magnetic impeller and the tongue tube K that are installed in the Gas Pipe, tongue tube (K) with connect direct supply after a resistance (R9) is connected, the pulse signal of their serial connection point output connects 9 pin of single-chip microcomputer (U4) through a photoelectrical coupler (U1);
B. the carrier transmitting-receiving coupled circuit is made up of coupling transformer (T), carrier signal receiving circuit and carrier signal transtation mission circuit, the primary coil of described coupling transformer (T) is connected to through an electric capacity (C3) between the phase line and zero line of single-phase alternating current, and secondary coil is carried ripple signal receiving circuit and carrier signal transtation mission circuit; Described carrier signal receiving circuit by the triode that is connected into common-emitter amplifier (T5) with and collector load resistor (R7), upper offset resistance (R5), below-center offset resistance (R6), repeating resistance (R4) constitute, the base stage of triode (T5) connects coupling transformer (T) through repeating resistance (R4), the output signal of its collector connects the SIGin end of single-chip microcomputer, also is connected to two antiparallel diodes between the base stage of triode (T5) and the emitter; Described carrier signal transtation mission circuit comprises four triodes, be respectively first triode (T1), second triode (T2), the 3rd triode (T3) and the 4th triode (T4), wherein first triode (T1) and second triode (T2) are connected into the OTL power amplifier, its output terminal connects coupling transformer (T) through an electric capacity (C4) and an inductance (L), the complementary amplifier that the 3rd triode (T3) and the 4th triode (T4) are connected into is the promotion level of above-mentioned OTL power amplifier, and the base stage of the 3rd triode (T3) and the 4th triode (T4) connects the PSKout end of single-chip microcomputer respectively through a resaistance-capacity coupling circuit;
Pin 1～the pin 4 of c.LCD display (U3) meets the pin COM1～pin COM4 of single-chip microcomputer (U4) respectively, and the pin 5～pin 28 of LCD display (U3) meets the pin S0～pin S23 of single-chip microcomputer respectively,
D.IC card read-write control circuit connects the pin RX end of single-chip microcomputer (U4);
E. motorized valve control circuit is made of bistable electromagnetic valve (DF) and bidirectional drive (U2), INA, the INB end of bidirectional drive (U2) connects RON, the ROFF end of single-chip microcomputer respectively, the coil of the CKA of bidirectional drive (U2), CKB termination solenoid valve (DF), a resistance (R3) in parallel on the coil of solenoid valve (DF);
F. the calibration circuit is made up of photoelectrical coupler (U5) and triode (T6), triode (T6) is connected into the common emitter amplifying circuit, its collector connects positive source through a light emitting diode and the current-limiting resistance (R11) of photoelectrical coupler U5, base stage connects 42 pin end of single-chip microcomputer, the output termination instrument calibration (XB) of the photoelectric tube of photoelectrical coupler (U5) through a biasing resistor (R10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201015476U CN201047765Y (en) | 2007-06-06 | 2007-06-06 | Electronic type pre-payment IC card carrier gas meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201015476U CN201047765Y (en) | 2007-06-06 | 2007-06-06 | Electronic type pre-payment IC card carrier gas meter |
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| Publication Number | Publication Date |
|---|---|
| CN201047765Y true CN201047765Y (en) | 2008-04-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201015476U Expired - Fee Related CN201047765Y (en) | 2007-06-06 | 2007-06-06 | Electronic type pre-payment IC card carrier gas meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201047765Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102298807A (en) * | 2011-06-28 | 2011-12-28 | 哈尔滨理工大学 | Intelligent low-power-consumption IC (Integrated Circuit) card film type gas meter |
| CN106054728A (en) * | 2016-07-05 | 2016-10-26 | 孙祝兵 | Combustion gas safety device |
| CN108877367A (en) * | 2018-06-07 | 2018-11-23 | 杭州佳和电气股份有限公司 | A kind of emulation collector and failure simulation method suitable for emulation training |
-
2007
- 2007-06-06 CN CNU2007201015476U patent/CN201047765Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102298807A (en) * | 2011-06-28 | 2011-12-28 | 哈尔滨理工大学 | Intelligent low-power-consumption IC (Integrated Circuit) card film type gas meter |
| CN106054728A (en) * | 2016-07-05 | 2016-10-26 | 孙祝兵 | Combustion gas safety device |
| CN108877367A (en) * | 2018-06-07 | 2018-11-23 | 杭州佳和电气股份有限公司 | A kind of emulation collector and failure simulation method suitable for emulation training |
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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: 20080416 Termination date: 20110606 |