CN2322187Y - Intelligent car gasmeter - Google Patents

Abstract

The utility model relates to an intelligent card gasometer which is connected with a gasometer of a gas pipeline, comprising a card reader and a control circuit, wherein, both the card reader and the control circuit are electrically connected with the execution part of the gasometer, and canned data can be read out, encoded and wrote in the control circuit by the card reader in which the intelligent card is inserted. The utility model which adopts an informational optical card stored in the form of lattice combination or an IC card, a bistable controlling valve, a resting circuit, etc. has the characteristics of energy saving, high security, air flow purchasing in advance, automatic monitoring, etc. and solves the problems of high cost, long time full-load operational status, no-leakage controlling, etc. The utility model has the functions of flexibility, application, energy saving, low price, autoweighing, green energy-saving, gas-liquid tracking, fault alarm, etc.

Description

The smart card gas meter

The utility model relates to the measuring apparatus of gas flow, more particularly is to be used for gases such as coal gas, natural gas to utilize microprocessor to carry out the smart card gas meter of flow metering, consumption prompting, fault alarm and green energy conservation.

Usually gas dosing majorities such as the piped gas known to the people, natural gas are that the manual metering hysteresis is paid the fees, existing automatic charging technology does not still possess the condition of applying, adopt the device of automatic charging technology that IC-card gas meter, magnetic card gas meter are arranged at present, the former IC-card is to utilize integrated circuit or single-chip microcomputer to be compressed on canned data on the card, confidentiality is stronger, the state time is long but circuit is operated at full capacity, use cost is higher, be difficult to be accepted, hindered applying of this technology by the user; The latter's magnetic card is the track canned data of utilizing on the magnetic stripe, and it is convenient to rewrite, and confidentiality is relatively poor, is easier to be replicated; These automatic charging device ubiquity circuit operate at full capacity state overlong time, use cost height, gas leakage is not reported to the police, consumption such as does not point out at defective, has therefore hindered applying of gas self-measuring devices such as coal gas, natural gas, does not satisfy the demand of people to gas dosing.

The purpose of this utility model is to provide a kind of deficiency that can overcome prior art, has that reasonable in design, dependable performance, discrimination are thief-proof, a smart card gas meter of characteristics such as forward purchasing tolerance, dormancy are energy-conservation, automatic monitoring.It has adopted technology such as bistable state operation valve, gas-sensitive sensing element, dormancy energy-saving circuit, pseudo-surreptitiously locking, select IC-card or dot matrix combination light-card and data encoding technique etc. simultaneously for use, realized that use cost is low, strong security, steal leak die, with gas tracking, fault alarm, green energy conservation, be convenient to the functions such as statistical study of aerogenesis unit to user institute gas consumption.

Smart card gas meter of the present utility model is that gas meter is arranged, card reader, smart card, control circuit, senser element, formations such as performer, it is to be connected to gas meter on gas pipeline, card reader is housed on gas meter, control circuit etc., card reader and control circuit are electrically connected with the gas meter execution unit, smart card inserts in the card reader information on the smart card is read through card reader, coding back write control circuit, it is that canned data on the smart card is read coding back input control circuit again by card reader, goes to control the metering of gas meter, steal gas, gas leakage, the monitoring of tolerance and caution; When purchasing tolerance and use a threshold quantity on the smart card of input, then warn the user and purchase the gas preparation, when the purchasing tolerance and use above lowest limit of input, then control circuit cuts off gas circuit and stops air feed.Described control circuit is that integrated component is arranged, resolution element, the micro-processor interface circuit that wiring board etc. constituted, energy-conservation dormant circuit, driving circuit, warning circuit, the gas leakage testing circuit, write micro-processor interface circuit behind the information coding on the smart card of reading by card reader, with micro-processor interface circuit as central processing unit, respectively with the dormancy energy-saving circuit, driving circuit, warning circuit, the control of gas leakage testing circuit is electrically connected, power circuit provides working power for it, it is that the information of smart cards for storage is read by card reader, coding back input micro-processor interface circuit, reach the on-off of pilot-gas pipeline through little processing rear drive drive circuit works, also can drive warning circuit work simultaneously, send gas leakage, steal gas, the warning of forward purchasing gas prompting, has only 10% circuit during this control circuit normality in work, circuit more than 90% is in " dormancy " state, the full load condition working time that also is exactly this circuit is short, therefore, realize green energy conservation, improved its serviceable life.Described driving circuit is output terminal and this schmitt trigger that micro-processor interface circuit is arranged, resistance, metal-oxide-semiconductor, solenoid valve is serially connected in the two ends of servomotor successively, diode, electric capacity is connected in parallel on solenoid valve respectively, the metal-oxide-semiconductor two ends, solenoid valve connects working power through diode, solenoid valve is preferably selected bistable electromagnetic valve for use, be used for the pilot-gas pipeline connection with close, metal-oxide-semiconductor is preferably selected the VMOS pipe for use, this driving circuit be with from the signal of micro-processor interface circuit (as gas leakage, steal gas, continuous wrong plug card, inserting signals such as card) the driving servomotor is just being done or bistable electromagnetic valve work is controlled in counter-rotating, realize the monitoring of tolerance, this solenoid valve does not need normality that electric current keeps valve to abnormal conversion during normality, ends the dependence upon electric current after finishing with electric current in the moment of transition status and keeps.When occurring stealing gas or changing power supply, control circuit drives closed electromagnetic valve, and this moment, circuit was in full load condition work.When recovering normal condition, control circuit drives solenoid valve and opens, 90% above circuit place dormant state work this moment.Described gas leakage testing circuit is that gas sensor, resistance, electric capacity, this schmitt trigger, rejection gate are arranged, perhaps be electrically connected with micro-processor interface circuit input end and reset terminal through energy-conservation integrated circuit, its input end be gas leakage arranged, steal gas, signals such as power supply replacing are connected to the input end and the reset terminal of micro-processor interface circuit through logic control, wherein energy-conservation integrated circuit is preferably selected the Low-Power CMOS integrated circuit for use.When the leakage gas flavor is arranged in the air, the gas sensor action, the testing circuit that then leaks gas is in its dormant circuit is started, through micro-processor interface circuit, make drive circuit works, the control bistable electromagnetic valve is closed gas pipeline, starts warning circuit simultaneously and sends alarm.When card reader read error card or pseudo-card, drive closed electromagnetic valve gas road on the one hand by micro-processor interface circuit equally, drive warning circuit on the other hand and warn, thereby reached gas leakage, when stealing gas, die immediately, warn.

Described dormancy energy-saving circuit is that energy-conservation integrated circuit, resistance, electric capacity, this schmitt trigger, diode, comparison amplifier, metal-oxide-semiconductor, voltage stabilizing diode, working power be electrically connected to form gas dosing, gas leakage detects, power supply is changed dormancy power saving unit are arranged.Under the normal condition, the dormancy energy-saving circuit is not worked, and the The whole control circuit only has 10% circuit to carry out work, and the circuit more than 90% is in dormant state.Have only when when leaking air, stealing signal such as gas, power supply replacing, entire circuit just moment enter the operation of full load state, handling the back circuit recovers dormant state immediately again, has fundamentally realized green energy conservation.Described warning circuit is to have reverser, resistance, VMOS pipe, audible-visual annunciator to be connected in series successively and to form, and its input end connects the output terminal of micro-processor interface circuit, and its output terminal is connected to audible-visual annunciator.It is with from the gas leakage of micro-processor interface circuit, steal gas, pseudo-card, purchase signal such as card prompting and drive audible-visual annunciator work through reverser, realized purchasing card is pointed out, tolerance uses up and leak gas, security warning such as gas surreptitiously, drive the solenoid valve shuts gas circuit simultaneously.Described metal-oxide-semiconductor is preferably selected the VMOS pipe for use.

Described card reader is to have card inserting mouth, Card Reader circuit, coding circuit, storage circuit to constitute, its input end inserts card inserting mouth with smart card and be connected to control circuit after Card Reader circuit, coding circuit, storage circuit output, wherein said smart card is as purchasing the gas card, can select IC-card or light-card etc. for use, wherein light-card is to utilize dot matrix data splitting coding techniques storage information, purchase tolerance with the hole representative, sell card system random function with computing mechanism and determine to make, thereby greatly reduce the fabrication cost, improved confidentiality.Above-mentioned Card Reader circuit, coding circuit, storage circuit are that IC-card or light-card are determined physical circuit according to the gas card of purchasing that uses, and when selecting light-card for use usually, the Card Reader circuit selects for use light emitting diode and photodiode to constitute.Power switch is connected when intelligent light-card inserts card reader, the Card Reader circuit is started working, the Card Reader synchronizing signal can make Card Reader accurate, data enter micro-processor interface circuit safely and handle, be elected to when using light-card, the user buys certain tolerance to gas station before with gas, the computer sale management system is made light-card with random cipher form storage information, the user will block on the card reader of inserting the smart card gas meter and discern processing, the locking of removing with air valve simultaneously begins air feed, when forward purchasing tolerance uses up, the acousto-optic hint user in time purchases gas or automatic-closing valve stops air feed, when inserting pseudo-card or wrong card, automatically lock gas circuit and sound and light alarm immediately, unlock and can reuse by managerial personnel, smart card also stores address name, data such as address, the gas consumption to the user carries out statistical study automatically.

Described working power can select for use direct supply or battery or AC transformation voltage stabilizer or DC-AC two-use auto switching electric source to provide working power for entire circuit.

Described micro-processor interface circuit is that formations such as central processing unit, memory, driver, address latch are arranged, and it is that the information of input is carried out little processing back output control Driver Circuit and warning circuit work.

Description of drawings:

Fig. 1: smart card gas meter structured flowchart

Fig. 2: control circuit block diagram

Fig. 3: smart card gas meter working circuit diagram

R-resistance Z-diode S-MOS pipe C-electric capacity

The energy-conservation integrated circuit of U1-Si schmitt trigger U2-

U3-comparer U4-reverser

U5-rejection gate U-micro-processor interface circuit B-alarm M-servomotor

The RL-bistable electromagnetic valve

Further specify structure of the present utility model in conjunction with the accompanying drawings:

As depicted in figs. 1 and 2, be on the gas meter that the band gas consumption shows, card reader, sensor for countering, execution unit, control circuit, alarm, gas sensor, working power to be housed.When sensor for countering or gas sensor or card reader input information, micro-processor interface circuit drives execution unit and is switched on or switched off gas circuit, gas meter usefulness gas measures or stops, gas sensor through gas leakage testing circuit input micro-processor interface circuit, is handled rear drive warning circuit and drive circuit works with information when leaking air fault.As shown in Figure 3: empty frame partly is dormancy energy-saving circuit, wherein dormancy energy-saving circuit metering with tolerance, power supply replacing, gas leakage detection dormancy power saving unit.I is a driving circuit, and II is a warning circuit, and III is the gas leakage testing circuit.

Smart card gas meter of the present utility model has solved for a long time, and the automatic charging gas meter is difficult to apply, use cost height, circuit long, the gas of state time of operating at full capacity leaks problems such as uncontrollable, no false proof surreptitiously gas warning, it both can select IC-card for use, optional again with light-card, as purchasing the gas card, especially selected light-card is to utilize dot matrix data splitting coding techniques canned data, the combination of this dot matrix utilizes computing machine to make and sell card system random function to determine, therefore its strong security greatly reduces the fabrication cost.The operating circuit of this device is selected the dormancy energy-saving circuit for use, has realized that moment operates at full capacity and power consumption, the function of the green energy conservation of 90% not power consumption of above circuit " dormancy " during normality work; Select for use bistable valve to make control gas circuit valve, utilize micro-processor interface circuit, realized automatic unlatching, automatically monitoring, automatic gauge, fault locking, with gas trackings, gas consumption statistical study, purchase functions such as card prompting, security alarm, be that collection is flexible, practical, energy-conservation, valency hangs down is that the ideal gas of one measures corollary apparatus.

Claims (9)

1. smart card gas meter, on gas pipeline, be connected to gas meter, it is characterized in that on gas meter, being equipped with card reader, control circuit, card reader and control circuit are electrically connected with the gas meter execution unit, smart card inserts in the card reader, the write control circuit after card reader is read, encoded of the information on the smart card.

2. smart card gas meter as claimed in claim 1, it is characterized in that control circuit is micro-processor interface circuit, dormancy energy-saving circuit, driving circuit, warning circuit, gas leakage testing circuit, the power circuit that has integrated component, resolution element, wiring board to constitute, it is to write micro-processor interface circuit, micro-processor interface circuit by card reader the information on the smart card of reading to be electrically connected with dormancy energy-saving circuit, driving circuit, warning circuit, the control of gas leakage testing circuit respectively, and power circuit provides working power for it.

3. smart card gas meter as claimed in claim 2, it is characterized in that described driving circuit is that the output terminal of micro-processor interface circuit and the two ends that this schmitt trigger, resistance, metal-oxide-semiconductor, solenoid valve are serially connected in servomotor are successively arranged, diode, electric capacity distinguish and at solenoid valve, metal-oxide-semiconductor two ends, solenoid valve connects working power through diode.

4. smart card gas meter as claimed in claim 2 is characterized in that described solenoid valve is a bistable electromagnetic valve, and its two ends are electrically connected with the execution unit of servomotor and gas meter respectively.

5. smart card gas meter as claimed in claim 2, it is characterized in that described gas leakage testing circuit is gas sensor, resistance, electric capacity, this schmitt trigger, rejection gate are arranged or to be electrically connected with the input end and the reset terminal of micro-processor interface circuit through energy-conservation integrated circuit, the detection that its input end connects gas leakage, steals gas, power supply is changed signal is connected to the input end and the reset terminal of micro-processor interface circuit through logic control.

6. smart card gas meter as claimed in claim 2 is characterized in that described dormancy energy-saving circuit is the dormancy power saving unit of being changed by gas dosing, gas leakage detection, power supply that resistance, electric capacity, diode, this schmitt trigger, voltage stabilizing diode, metal-oxide-semiconductor, comparer, energy-conservation integrated circuit, working power are electrically connected to form.

7. smart card gas meter as claimed in claim 2 is characterized in that described warning circuit is that reverser, resistance, metal-oxide-semiconductor, audible-visual annunciator are connected in series successively and form, and its input end connects the output terminal of micro-processor interface circuit, and its output terminal is connected to audible-visual annunciator.

8. smart card gas meter as claimed in claim 2, it is characterized in that described card reader is to have card inserting mouth, Card Reader circuit, coding circuit, storage circuit to constitute, its input end inserts card inserting mouth with smart card, is connected to control circuit after Card Reader circuit, coding circuit, storage circuit output.

9. smart card gas meter as claimed in claim 1 is characterized in that described smart card is IC-card or light-card.

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