CN2254179Y

CN2254179Y - Automatic gas metering controller

Info

Publication number: CN2254179Y
Application number: CN 95237755
Authority: CN
Inventors: 陶昌兴
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-10-12
Filing date: 1995-10-12
Publication date: 1997-05-14
Anticipated expiration: 2005-10-12

Abstract

The utility model relates to an automatic gas metering controller connected with a gas electric valve, also an automatic gas metering, controlling and supplying device. The inner of a flat square case-shaped shell is provided with a machine core circuit which is mainly composed of a microcontroller composed of integrated circuit chips, a counting circuit, a detecting circuit for gas streams, a detecting circuit for electricity loss, a drive circuit, an electrical key and a power circuit. The utility model has the advantages of complete functions, convenient operation, functions of saving data in electricity loss, and measuring as well as controlling when a gas meter is damaged, high reliability, strong anti-interference ability because a controller chip is provided with a hardware watch dog, and favorable anti-counterfeiting performance, and can be combined with various electronic protectors for leak gas to detect and control gas leakage with less power consumption and low cost.

Description

Combustion gas automatic gauge control device

The utility model relates to a kind of controller for gas, particularly combustion gas automatic gauge and control device.

Existing Gas controller, a kind ofly form by electromagnetic mechanism, by its control air valve, its power consumption is big, poor reliability, and can not automatic gauge, though existing combustion gas automatic gauge control device can be controlled gas valve automatically according to the gas metering parameter, but still existing power consumption bigger, reliability is good inadequately, and to the shortcoming of paying measuring card antifalsification difference.

It is little that the purpose of this utility model is to design a kind of power consumption, good reliability, antifalsification is good and cost is low combustion gas automatic gauge and automaton, it and motorized valve coupling.

The utility model technical solution is a combustion gas self-clocking control device, connect use with the combustion gas motorized valve, it is the device of a kind of automatic control gas metering and air feed, in flat-square box shape shell, install movement circuit, movement circuit is by microcontroller and counting circuit, airflow detection circuit, dead electricity testing circuit, Electrical key, driving circuit and power circuit connect formation.

Description of drawings is as follows:

Fig. 1 is a combustion gas automatic gauge control device contour structures synoptic diagram

Fig. 2 is a combustion gas automatic gauge control device power circuit diagram

Fig. 3 is a combustion gas automatic gauge control device circuit connecting figure

The utility model further specifies as follows in conjunction with specific embodiments referring to accompanying drawing;

A kind of combustion gas automatic gauge control device, connect use with the combustion gas motorized valve, it is the device of a kind of automatic control gas metering and air feed, device movement circuit in flat-square box shape shell [1], on shell [1] panel dead electricity is housed, purchase gas, fault and Electrical key read-write state pilot lamp LD1～LD4 and button switch K and plug socket J and Electrical key socket [9], its movement circuit is by chip IC 5, IC6 and peripheral cell light thereof show pipe LD2～LD4, K switch, plug socket J and resistance R 24 are connected into microcontroller [2], it is the MCU chip of PIC16C57 that its IC5 adopts model, plug socket J can electrically connect electron type wheel leakage protective device; IC6 is a data memory, adopting model is the 93C46 chip, can in time deposit data in IC6: be connected into counting circuit [3] by superminiature infrared emission receiving tube Q1, Q2 and resistance R 10～R13, by triode T1, pneumatic sensor G, transport and placing device IC1, IC2 and capacitor C 1, C2 resistance R 1～R9 are connected into airflow detection circuit [4], show pipe LD1 by transport and placing device IC3, IC4 and light, potentiometer W1, resistance R 14～R20 are connected into dead electricity testing circuit [5], constitute Electrical key [6] by chip IC 7, be connected into driving circuit [7] by the motor M of triode T2～T5 and motorized valve; Circuit [3], [4], [5], [6], [7] connect with circuit [2] respectively separately, by circuit [3] Q1, Q2 output terminal P1, P2 exports respectively and is connected to circuit [2] IC5r RC6, the RC7 pin, be connected to the RC2 pin of circuit [2] IC5 by circuit [4] IC2 output terminal, be connected to the RC4 pin of circuit [2] IC5 by circuit [5] IC3 output terminal, by circuit [7] T1, the T2 base stage is contact and T3 altogether, the T4 base stage is total to RA0 pin and the RA1 pin that contact is connected to circuit [2] IC5 respectively, SK by circuit [6] IC7, DL, DO pin public affairs are not received the SK of circuit [2] IC6, DI, the RB1RB2 of DO pin IC5, the RB3 pin, CS pin by circuit [6] IC7, be connected to the RB4 pin of circuit [2] IC5, above-mentioned each circuit [2], [3], [4], [5], [6], [7] power end Vcc all is connected to the output terminal Vcc of two-supply circuit [8]; By transformer PT, silicon stack rectifier bridge B, voltage stabilizing chip IC B and capacitor C 2, C3, diode D1～D5, resistance R 25 and battery E are connected into two-supply circuit [8]; Two superminiature infrared emission receiving tube Q1, Q2 of counting circuit [3] are installed in gas meter, flow meter final stage counting gear side, respectively over against the tooth portion and the slot part position of gear; It is the MCU chip of PIC16C57 that microcontroller [2] chip IC 5 adopts model, and other each chip models are respectively: IC1～IC4 is LM324, and IC6 is 93C46 for reaching IC7, and IC8 is 7806.

The utility model work is former as follows down:

This device is delivered to microcontroller [2] IC5 by the revolution pulse that counting circuit [3] sampling obtains the metering of gas meter, flow meter gas quantity, the user uses Electrical key [6] IC7 to pay dues to the civil gas management station and purchases gas, purchase tolerance and write IC7, Electrical key [6] IC7 is plugged to microcontroller [2] IC5 by this crust of the device interface [9], press K switch, at first to carry out cryptographic core right to the data of reading in of IC7 by microcontroller [2] IC5, judge errorless, then IC7's purchases destiny according to input IC5, pilot lamp LD2 is shinny simultaneously, IC5 data in view of the above compares with the actual gas consumption data of coming with counting circuit [3] input, if residual air is greater than 5m3, then IC5 control Driver Circuit [7] motor M makes and opens air flue supply combustion gas, if residual volume is less than 5m3, then microcontroller [2] circuit at first makes LD3 shinny, to remind the user, when residual volume is zero, then IC5 control Driver Circuit [7] motor M closes the combustion gas road, cuts off air feed.Because counting circuit [3] adopts two superminiature infrared ray launches and receives pipe Q1, Q2 to you can well imagine for count signal from the tooth portion and the slot part of gas meter, flow meter counting gear, microcontroller [2] IC5 carries out and logical combination control the count signal of Q1, Q2, therefore counts the accuracy height.

Meanwhile, when gas valve is opened air feed, airflow detection circuit [4] is with air-flow pulse data signal input microcontroller [2] IC5, if IC5 receives the gas consumption data of counting circuit [3] input and the airstream data of airflow detection circuit [4] input simultaneously, show that then gas meter, flow meter is excellent, if only receive the airstream data of airflow detection circuit [4], and the no gas consumption data input of counting circuit [3], show that then gas meter, flow meter damages, this state continuance is after a period of time, and then IC5 control Driver Circuit [7] motor M closes gas valve, cuts off air supply duct, LD4 is shinny simultaneously, and the indication gas meter, flow meter damages.

Power circuit [8] is at ordinary times by the 220V mains supply, give battery E charging simultaneously, when electrical network has a power failure suddenly, power circuit [8] can continue power supply by battery E makes device work, it is very little not install working current, only 12mA, battery E adopt the small-sized maintenance-free battery of 1.2AH type can work 2～3 hours, if the grid power blackout time is longer, when battery E voltage will be reduced to the device cisco unity malfunction, then dead electricity circuit [5] sends signal and gives microcontroller [2] IC5, IC5 works on during in order to incoming call by useful data is all deposited among the data memory IC6.Pilot lamp LD1 is shinny.

Each pilot lamp LD1～LD4 adopts from glimmering high brightness LED, saves oscillatory circuit or pulse producer, has reduced cost.

This device can be gone up the peg graft electronic type wheel leakage protective device of prior art of arbitrary model of jack J by shell [1], makes its normal run signal be output as high level, and the leakage alarm signal is output as low level.When leakage alarm signal during from spliced eye J input microcontroller [2] IC5; IC5 closes gas valve with control Driver Circuit [7] motor M; cut off air supply duct; after getting rid of principal fault; when IC5 receives the normal run signal of high level of wheel leakage protective device input, then control motor M and reopen the gas valve air feed.

The MCU chip model that the microcontroller of this device [2] IC5 adopts is PIC16C57, and itself has hardware watchdog, and antijamming capability is strong, and itself has encryption function, prevents to usurp program, and antiforge function is good.

The chip that Electrical key [6] IC7 adopts is 93C46, has encoding function, and sign indicating number number only uses once, but cipher counterfeit-proof.

The utility model advantage is multiple functional, and is easy to use, can automatically protect during dead electricity Deposit data also can install automatic measuring and controlling by this if gas meter, flow meter damages, and this device is reliable in addition The property height, its controller chip is with hardware watchdog, antijamming capability is strong, simultaneously control The device chip has encryption function, can prevent from copying, and the Electrical key codified, anti-counterfeiting performance is good, This device again can with the coupling of various electronic type wheel leakage protective device, detecting the control gas leakage, The utility model power consumption is little, and cost is low.

Claims

1. combustion gas automatic gauge control device, connect use with the combustion gas motorized valve, it is the device of a kind of automatic control gas metering and air feed, in flat-square box shape shell, install movement circuit, movement circuit is by microcontroller and counting circuit, airflow detection circuit, Electrical key, driving circuit and power circuit connect formation, it is characterized in that its circuit of movement is by chip IC 5, IC6 and external application thereof are enclosed element light and are shown pipe LD2～LD4, K switch plug socket J and resistance R 21～R24 are connected into miniature control device [2], IC6 is a data memory, by superminiature infrared emission receiving tube Q1, Q2 and resistance R 10～R13 are connected into counting circuit [3], by triode T1, pneumatic sensor G, transport and placing device IC1, IC2 and capacitor C 1, resistance R 1～R9 is connected into airflow detection circuit [4], by transport and placing device IC3, IC4 and light show pipe LD1, potentiometer W1, resistance R 14～R20 is connected into dead electricity testing circuit [5] and constitutes Electrical key [6] by chip IC 7, is connected into driving circuit [7] by the motor M of triode T2～T5 and motorized valve; Circuit [3], [4] [5], [6], [7] connect with circuit [2] respectively separately, by circuit [3] Q1, Q2 output terminal P1, P2 is connected to the RC6 of circuit [2] IC5 respectively, the RC7 pin, be connected to the RC2 pin of circuit [2] IC5 by circuit [4] IC2 output terminal, be connected to the RC4 pin of circuit [2] IC5 by circuit [5] IC3 output terminal, by circuit [7] T, the T2 base stage is contact and T3 altogether, T4 base stage point is total to RA0 pin and the RA1 pin that contact is connected to circuit [2] IC5 respectively, SK by circuit [6] IC7, DI, the DO pin is connected to the SK of circuit [2] IC6 respectively, DI, the RB1 of DO pin and IC circuit 5, RB2, the RB3 pin, be connected to the RB4 pin of circuit [2] IC5, above-mentioned each circuit [2] by the CS pin of circuit [6] IC7, [3], [4], [5], [6], [7] power end VCC all is connected to the output terminal VCC of two-supply circuit [8]; Be connected into two-supply circuit [8] by transformer PT, whole source bridge B, voltage stabilizing chip IC 8 and capacitor C 2, C3, diode D1～D5, resistance R 25 and battery E; Two superminiature infrared emission receiving tube Q1, the Q2 that pin is counted circuit [3] are installed in gas meter, flow meter final stage counting gear side respectively over against the tooth portion and the slot part position of gear; It is the MCU chip of PIC16C57 that microcontroller [2] chip IC 5 adopts model.

2. combustion gas automatic gauge control device according to claim 1 is characterized in that its pilot light shows pipe LD1, LD2, LD3, LD4 adopt from glimmering high brightness LED.

3. combustion gas automatic gauge control device according to claim 1 is characterized in that battery E adopts small-sized maintenance-free battery in its two-supply circuit [8].