CN2246311Y - Gas meter having low power loss safety and artificial intelligence - Google Patents
Gas meter having low power loss safety and artificial intelligence Download PDFInfo
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- CN2246311Y CN2246311Y CN 95231776 CN95231776U CN2246311Y CN 2246311 Y CN2246311 Y CN 2246311Y CN 95231776 CN95231776 CN 95231776 CN 95231776 U CN95231776 U CN 95231776U CN 2246311 Y CN2246311 Y CN 2246311Y
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Abstract
The utility model relates to a gas meter having low power loss safety and artificial intelligence which is composed of an electronic card, an intelligent electronic control unit and an ordinary gas meter. Users can pre-purchase gas capacity with the electronic card and control gas supply automatically. The gas meter has the functions of intelligent recognition, gas theft protection, gas leakage protection, earthquake-proof performance, remote control, remote reading through telephone wire, remote control for pre-purchasing coal gas, etc. The gas meter can ensure users to use liquid crystal display gas consumption, surplus of the card and other data safely. The power consumption of the gas meter is so low that a lithium cell can be serially used for 8-10 years without replacement of batteries. The utility model is convenient, reliable and safe in use.
Description
Artificial intelligence safety-type low power dissipation electron card liquid crystal gas meter, can use electronic cards forward purchasing coal gas, automatically the control air feed has gas-robbery resistence, anti-gas-leak, anti-earthquake and self study user gas consumption and closes functions such as coal gas, distance-reading data, transmission forward purchasing coal gas amount by remote telephone.Use the liquid crystal display gas consumption, data such as surplus in the electronic cards.And make battery-powered novel intelligent safety-type gas meter.
At present, the gas measurement charge has following several mode basically:
One, common gas meter, manually look meter and charge original backwardness.
Two, the gas meter of inserting coins, this table need not manually look meter and charge, but still need manual recovery metal coin and be difficult to prevent forge, lose, steal coal gas.
Three, magnetic card gas meter, though this table has solved the manual toll collection problem, complex structure, cost height, and poor reliability, data on magnetic card is easily lost.
Four, distance-reading formula gas meter, this gas meter can be gathered the coal gas data in wireless or wired mode, but still needs manual toll collection, and cost is not low yet.
Five, I once applied for a forward purchasing automatic charging gas meter patent, though this patent need not manually look meter and charge, but power consumption also is not enough to low to using battery-powered operation fully, battery is standby, also need use AC power, and not have the duty of liquid crystal display watch, residue forward purchasing amount in the card, the user can't understand intuitively and uses the gas situation, and it is still convenient inadequately to install and use.
Six, gas meter in the past stays out and all can not cut out automatically when occur stealing gas, gas leakage, earthquake or people, is difficult to guarantee user security and reliable metering.
Purpose of design of the present utility model is to provide a kind of shortcoming that can overcome existing various gas meters, gas-robbery resistence, anti-earthquake external remote controller can be closed the gas meter valve by telephone wire, data in the distance-reading table, to table transmission forward purchasing coal gas, need not look meter and charge from door to door, low in energy consumption, can use battery as power supply, the duty and the Ka Nei residual gas forward purchasing amount of table can be by liquid crystal displays, simply, reliably, gas meter cheaply.This table can be remembered user's coal gas amount commonly used by self study, micro-leakage when length occurring, or coal gas flows when surpassing the self study maximum flow suddenly, can automatically provide warning, turn-offs coal gas in time and guarantees safety.
The purpose of this utility model is achieved in that artificial intelligence safety electric subcard low power consumption liquid crystal gas meter, by the electronic cards low-voltage, low-power consumption (static structure) one-chip computer circuit (hereinafter to be referred as intelligent gas meter and single-chip computer with low power consumption) electronic cards socket, the electronic cards interface circuit, the plug-in card testing circuit that puts in place, anti-dismounting battery circuit, the gas-robbery resistence testing circuit, the vibration-sensing circuit, coal gas leak detector input interface circuit, the remote telephone interface circuit, sound indicating circuit, the battery undervoltage detection circuit, under-voltage indicator light circuit, the gas measurement sensing circuit, the solenoid valve for gas control circuit, solenoid-driven power supply accumulator, solenoid valve for gas and liquid crystal display circuit, magnetic is pulled out the card testing circuit, electromagnetism ejects the formation smart electronics control device and the common gas meter formation of circuit such as electronic cards socket driving circuit.All circuit all are assembled on the printed circuit board (PCB), one of printed circuit board (PCB) assembling is equipped with in the can or plastic casing of electronic cards socket, box is installed on the shell of gas measurement device, also can be designed to one with gasometer casing, LCD is installed in the front of table, solenoid valve for gas be installed on the gas inlet pipe or table in.The lead sealing of foregoing circuit shell, the user can't change voluntarily.
When the user cuts off line, the electromagnetism break detection circuit can send to an input end of low-power scm circuit cuts off surreptitiously gas signal, the low-power scm circuit is under the control of gas-robbery resistence program, can in electronic cards, set up the surreptitiously gas sign that the user can not remove, when the user attempts to open lead sealing, tear gas meter open, or when pipeline is pulled down gas meter, the gas-robbery resistence sensor is to stealing pneumatic work, the intelligence gas meter will cut out the gas meter valve, and on forward purchasing coal gas electronic cards, set up and steal the gas sign, this sign user can't remove voluntarily, can not remove this sign even remove the battery of intelligent gas meter, only could remove on the coal gas marketing system of Gas Company, this function can prevent effectively that the user from stealing gas.This table is provided with artificial intelligence and handles distance preface and coal gas leakage alarm signal input interface with airshed study, is used to prevent coal gas gas leakage.The circuit generation took place in base when the intelligence gas meter was provided with one, time base clock when the coal gas of intelligent gas meter, surpasses when a certain amount of, can judge, can both provide the gas leakage prompting automatically or valve-off stops air feed for extra small flow chronistor amount or super-flow are excessive.When the coal gas leak alarm detected gas leakage, its output signal was received the coal gas leak alarm interface of intelligent gas meter, and the gas meter automatic-closing valve is to guarantee user security.
The intelligence gas meter when detecting vibrations, can automatically be judged vibrations, and when judging that earthquake reaches the above earthquake of certain rank, automatically valve-off prevents to shake the gas leakage of bad pipeline and causes bigger disaster.
When the user forgets when closing coal gas, the user closes the coal gas instruction can sending to telephone remote control by phone at a distance, when the telepilot output signal is closed coal gas, closes coal gas at a distance by phone, so that the user is safer.Also can concentrate and close valve by telephone wire in this device.Can also realize that by this interface phone distance-reading gas meter data and logical or telephone wire transmit coal gas forward purchasing amount to Biao Neika.
When the utility model used, the user held electronics and snaps into coal gas sales department and buy a certain amount of coal gas, writes electronic cards with the password form.After the user will block the intelligent gas meter of insertion, the one-chip computer in the table read forward purchasing coal gas amount by the electronic cards interface circuit from electronic cards, and the user can use coal gas.When the user used coal gas, gas meter deducted gas consumption from the forward purchasing amount.When forward purchasing coal gas amount ran low, table can send the sound, and LCD can provide demonstration, and the prompting user holds again and purchases gas.When forward purchasing coal gas amount uses, one-chip computer will be closed solenoid valve for gas by the solenoid valve for gas control circuit, stop air feed.The user blocks again and purchases gas, and after preceding card inserts in the table, the table solenoid valve air feed again that can turn on the gas-fire automatically.When battery capacity was not enough, table can be with the sound, under-voltage flash lights and liquid crystal display, and the prompting user in time changes battery, closes solenoid valve simultaneously, stops air feed, just can recover air feed automatically behind the replacing battery.Thereby realized pre-gas consumption, automatic charging need not look meter and charge.
The user also can exist in the interior electronic cards of table at the ofgas door by the gas meter transmission forward purchasing gas consumption of telephone wire to the user.
Because the utility model adopts low-power consumption, low-voltage large scale integrated circuit one-chip computer, its power consumption is compared with common CMOS integrated circuit, power consumption is lower, and use the economize on electricity program, make one-chip computer be in power-down state least in power-consuming at ordinary times, have only Card Reader or just end this state when measuring or when the signal input is arranged.Solenoid valve for gas aims at the design of intelligent gas meter, and outage can be protected the state of opening or closing, and only just switches on opening or closing action moment.Thereby the assurance low-power consumption is operated under the extremely low power consumption state intelligent gas meter, realizes powered battery, can use more than 8～10 years at the use lithium battery and need not change battery.
Fig. 1 is a theory diagram, and Fig. 2 is circuit theory diagrams, and Fig. 3 is electromagnetic valve structure figure.
Below in conjunction with drawing the embodiment of utility model is discussed intelligent gas meter in detail, it comprises intelligent gas meter:
An electronic cards (1) is had read-write, is wiped the E that controls password by the low-power consumption serial
2PROM memory circuit IC1 constitutes, and is used to write down coal gas forward purchasing amount gas meter and carries out the border service data, is encapsulated in the plastic cards, is provided with electrical contact, is used for linking with socket, finishes the read-write of card;
Electronic cards (2) in the table, this is fastened in the table by Serial E
2PROM, IC2 constitute, and are used for recorded and stored under the control of stating low-power scm I/O interface read-write control signal and data-signal, and the coal gas forward purchasing amount that is retained after the user pulls up card is stolen the data such as coal gas forward purchasing amount that gas sign and telephone wire transmit;
A single-chip computer with low power consumption circuit (3) is used for writing down actual gas consumption from aforementioned electronic cards read-write coal gas forward purchasing amount, realizes with functions such as gas control system, gas measurement, charging, gas-robbery resistence, gas leakage, earthquakes;
An electronic cards interface circuit (4) and electronic cards socket (5), be used for being electrically connected between aforementioned single-chip computer with low power consumption IC3 and the electronic cards, under the control of software, convert the I/O port signal of one-chip computer circuit to the required read-write control signal of electronic cards, clock signal, data-signal etc.;
A card power control circuit (6) is used for blocking power supply control under the control of aforementioned single-chip computer with low power consumption;
A measurement sensory circuit (7) is installed on the mechanical gas measurement device (7), is used for converting mechanical gas measurement action to input port that electric signal outputs to aforementioned single-chip computer with low power consumption circuit, carries out gas measurement, charging and flow and judges;
A mechanical type gas measurement device (8) is used for providing mechanical gas measurement signal to aforementioned gas measurement sensing circuit;
A plug-in card testing circuit (9), whether the electronic cards socket that is used for detected electrons card insertion automatic charging gas meter puts in place, and its output is connected to an input end of aforementioned low-power scm, provides to aforementioned single-chip microcomputer to snap into a signal;
One is pulled out card application circuit (10), is used for providing to aforementioned single-chip computer with low power consumption pulling out card signal, pulls out the card handling procedure with startup;
A tamper battery detection circuit (11), when the user takes away battery or takes the electronic section casing apart when stealing gas in valve opening state attempt, this circuit provides a battery dismounting signal to aforementioned single-chip computer with low power consumption, starts the gas-robbery resistence program, valve-off stops air feed;
A solenoid valve line break detection circuit (12) is used to detect the user and illegally cuts off the solenoid valve line, when the user cuts off the solenoid valve line, provides the illegal gas signal of stealing to an input end of aforementioned low-power scm circuit;
An anti-dismounting sensing circuit (13) is used to detect the user and illegally dismantles, and changes the dismounting action into a input port that electric signal outputs to aforementioned single chip circuit, provides one to steal the gas signal and be used to start the gas-robbery resistence handling procedure;
A vibration-sensing circuit (14) is used for detecting vibrations, converts the vibrations of dismounting action or earthquake to a input port that electric signal outputs to aforementioned single chip circuit and carries out shockproof processing;
A coal gas leak detector input interface circuit (15) is used to accept the leakage alarm signal of coal gas leak alarm, and this signal is input to aforementioned single chip circuit, carries out coal gas gas leakage and handles;
Circuit (16) takes place in base in the time of one, and base clock when being used to produce provides time-base signal with flow detection with steal gas and judge to an input end of aforementioned single-chip computer with low power consumption to it;
A telephone remote control interface circuit (17), be used to receive the pass valve signal of telephone remote control output, or by modulator-demodular unit, use the destiny certificate by telephone wire to the transmission of gas supply department, and the user is transmitted coal gas forward purchasing amount by telephone wire to user's gas meter at the ofgas door;
Electromagnetism ejects electronic cards socket driving circuit (18), is used for the bullet card signal that sends under the output port control at aforementioned low-power scm circuit after pulling out card signal receiving, makes and ejects electronic cards socket electromagnetic actuation, makes card ejection;
A low-power consumption battery undervoltage detection circuit (19) is used for providing a cell voltage shortage signal to aforementioned single-chip computer with low power consumption when cell voltage is not enough;
A under-voltage indicating circuit (20) is used under an output port control of aforementioned single-chip computer with low power consumption, and the under-voltage pilot lamp of LED provides the under-voltage indication of flashing when appearance is under-voltage;
A power of electromagnetic valve translation circuit (21) is used for providing the switch valve power supply to following driving circuit for electromagnetic valve under a port controlling of aforementioned low-power scm;
A solenoid valve for gas control circuit (22) under the control of aforementioned single-chip computer with low power consumption circuit output end mouth, is realized opening or closing of solenoid valve for gas;
A solenoid valve for gas (22) under aforementioned solenoid valve for gas control, is realized air feed control;
A sound circuit (23) under the control of aforementioned single-chip computer with low power consumption output port, provides and will purchase gas again or the under-voltage sound that waits of battery is indicated;
A liquid crystal indicator (24) under aforementioned single-chip computer with low power consumption I/O port controlling, shows the duty of gas consumption, residue forward purchasing amount and automatic charging gas meter;
The working routine (25) of intelligence gas meter is used to realize be made of every function of this table a plurality of program modules.
Electronic cards (1) is by the low voltage cmos Serial E
2The printed circuit board (PCB) and the plastic casing of the IC1 of PROM memory circuit and band pin constitute.The Vcc of IC1, GND, CLOCK, I/O, CS/RS constitute the electrical contact of electronic cards.Vcc in the electronic cards, GND, CLOCK, I/O, CS/RS are by the electronic cards socket (5) of intelligent gas meter, and electronic cards interface circuit (4) links to each other with the one-chip computer (3) of low-voltage, low-power consumption, realizes the electronic cards data write.Electronic cards can adopt the Serial E of three buses
2PROM (as shown in Figure 2), I
2C bus-type E
2Prom memory (as shown in Figure 2), the Serial E of ISO7816 index zone security logic
2Prom memory (as shown in Fig. 3-2).When adopting I
2C bus Serial E
2During prom memory, only use Vcc, GND, a CLOCK and I/O4 pin.When the Serial E of using ISO7816 index zone security logic
2During prom memory, electronic cards is used Vcc, GND, CLOCK, I/O, PST, PRG, a FUS7 pin.When using three bus-type Serial E
2During prom memory, electronic cards is used Vcc, GND, CLOCK, I/O, a CS5 pin.For the utility model, three bus-types, I
2C bus or ISO7816 standard have the Serial E of security password
2PROM can be compatible.
Electronic cards (E in the table
2PROM) (2) are by CMOS low-power consumption Serial E
2PROM, IC2 constitute, and its I/O, CLOK line and electronic cards and usefulness are by the P of following single-chip computer with low power consumption IC3
2.0, P
0.1Provide, the CS chip selection signal, by the input/output port P of IC3
0.4Provide, in IC3, under the control of read-write program, finish read-write.
Single-chip computer with low power consumption circuit (3) is the core of intelligent gas meter, is made of the one-chip computer IC3 of low-voltage, static structure.At present, popular in the world common CMOS one-chip computer 80C31, the requirement that power consumptions such as 68HC, Z8600 all can not satisfy the low-power consumption of gas meter technology.What the utility model adopted is not common CMOS one-chip computer, but can work being lower than under the 5V voltage, its operating voltage is low to moderate 3V and also can, and the one-chip computer of the full static structure that also can work with lower frequency of 1MHZ, its power consumption is compared with common CMOS one-chip computer, 1/tens, even still less.The one-chip computer that the utility model adopted also have when the power down operations state (duty least in power-consuming) need not be any outside attached components and parts can start the function of resuming work.Thereby make automatic charging gas meter average power consumption be low to moderate a microampere order of magnitude.Program ROM is made in the one-chip computer, can save two circuit of address latch used in the common one-chip computer circuit and program storage like this, can reduce cost, and can reduce power consumption again, improves reliability.The working routine of one-chip computer by initialize routine, read-write program, coal gas measurement program, decrypted program, encipheror, battery remove handling procedure, coal gas gas leakage handling procedure, artificial intelligence use traffic, time, self-study program, remote telephone communication handling procedure, gas-robbery resistence program, solenoid valve burn out detection program, battery is under-voltage detection handling procedure, economize on electricity handling procedure etc. constitute.One-chip computer is finished and is read coal gas forward purchasing amount, charging, encryption, deciphering under the control of program, writes down functions such as actual gas consumption in electronic cards.
Electronic cards interface circuit (4), the P of IC3
2.0, P
0.1, P
0.4Be connected to I/O, CLOCK, the CS of electronic cards by electronic cards socket (5).The resistance R that electrostatic prevention is all arranged on each I/O pin
2～R
5, with the I/O port of protection electronic cards interface circuit.
When electronic cards adopts the ISO7816 standard, the P of IC2
0.3, P
0.2, Vcc is respectively as RST, PRG, FUS signal, thereby this electronic cards interface circuit hardware is not changed, just can be used for the read-write of ISO7816 international standard electronic cards, circuit as shown in Fig. 3-2, when electronic cards is used the I2C bus driver, only I/O, CLOCK (being SDA, SCA) are as Fig. 3-1 except that power ground in use, and the electronic cards interface circuit also can be made of other I/O port of one-chip computer IC3.
Gas measurement sensing circuit (6) is by magnetic sensor K
3, R
8, coupling capacitance C
5, resistance R
9Form.A sticking fritter permanent magnet in mechanical type gas measurement device metering mechanism, magnetic sensor K
1Be installed in the metering disk next door, metering disk whenever circles, K
3Produce a pulse, through C
5Coupling converts level signal to pulse signal, is connected to IC3 input end P
2.5Carry out metering and billing.Also can use other magnetic sensor photoelectric sensor etc., but by contrast, magnetic sensor has the advantage that cost is low, reliability is high, low in energy consumption.
Card power control circuit (7) is by transistor BG
1, resistance R
1Constitute, by the output port P of aforementioned one-chip computer
3.3Control, output low level makes BG when the needs read-write card
1Conducting makes card Vcc go up power supply and adds that read-write finishes and closes, thereby reaches the purpose of economize on electricity.
Mechanical type gas measurement device (8) can adopt mechanical type gas measurement device in the utility model table, also can adopt rotator type gas measurement device, for the gas measurement sensing circuit provides mechanical gas measurement signal.
Plug-in card testing circuit (9) is by K switch
1, resistance R
6Constitute, the output signal of this circuit is received the input pin P of IC3
2.3, electronic cards is inserted the electronic cards socket of automatic gauge gas meter, and inserts when putting in place K
2Closure, output signal is through the P of IC2
2.3Input end passes through P
2.3Send to one-chip computer and to snap into a signal, start electronic cards Card Reader program and decrypted program, read in coal gas forward purchasing amount.
Magnetic is pulled out card application circuit (10), pulls out card power switch K by magnetic
2, R
7Constitute R
7One end ground connection, the other end is connected on K
3An end, be connected to IC3, P
2.6On the input end, K
2The other end be connected on the Vcc, pull out card application circuit output low level at ordinary times, when little magnetism stick during near casing, is pulled out card application switch closure, pull out card and apply for that circuit exports the P of high level IC3
2.6Receive pull out card application signal after, carry out and pull out the card handling procedure, send the sound, send bullet card drive signal and make card ejection.
Battery dismounting testing circuit (11), this electric routing battery dismounting detecting device K
4, R
10Constitute, output is connected on the P of IC3
2.7On the input port.When the user attempts to take out battery or take the electronic section casing apart when stealing gas, K when the coal gas magnet valve is opened
4Closure, the output high level after IC2 detects this signal, is carried out the gas-robbery resistence program, P
3.6The output high level, P
3.7Output low level makes valve closing; After battery compartment door is put well, K
4Disconnect, output low level after IC3 detects, is carried out and is opened valve program, P
3.6Output low level, P
3.7The output high level is driven valve.
Solenoid valve break detection circuit (12) is by transistor BG
2, resistance R
12An input port P with single-chip microcomputer
1.5Constitute, transistorized grid and power lead and control line of electromagnetic valve are parallel, are enclosed in the sheath, when when cutting off the solenoid valve line, detect together quilt and are cut off when detection line disconnects, and transistor can become conducting by ending, and make its P to low-power scm
2.7Input port is exported the solenoid valve disconnection signal, starts the broken string handling procedure, record in the electronic cards in table, and broken string indicates the record of stealing gas as the user, can be read and be removed by coal gas sales department, the user can not remove voluntarily, can prevent effectively that the user from stealing gas.
Anti-dismounting sensing circuit (13), this circuit is by detector switch K
5, R
11Constitute the input end P that its output is connected on IC3
2.4Send and illegally steal gas dismounting signal, start gas-robbery resistence stop valve, and in table, write down on the wild card and steal the gas sign, have only the user to pay forfeit money and just can remove K with electronic cards coal gas marketing system by coal gas department
5Anti-the disassembling that also can be provided with more than 2 closed formation.
Vibration-sensing circuit (14), this circuit is by vibration detection sensor, K
7Resistance R
13Constitute, this sensor can be experienced 360 ℃ vibrations, when vibrations take place, sends vibration signal, outputs to an input end P of low-power scm IC circuit 3
1.0The starting shock handling procedure, it is earthquake or the intelligent gas meter of illegal dismounting that vibration signal is handled difference, carries out safe handling if handle earthquake or have the vibrations of harm will close solenoid valve for gas, writes down the earthquake sign simultaneously respectively or steals gas information.
Coal gas leak detector input interface circuit (15), this circuit is by optical coupling isolation circuit IC7 road, R
15, R
16Constitute with input terminal, coal gas leak detector output signal is connected on the input terminal of coal gas leakage alarm input interface circuit, when the coal gas leak detector detects gas leakage, its output signal, isolates through photoelectric coupled circuit IC7.Be input to an input end P of low-power scm IC circuit 3 tunnel
1.2Start the gas leakage handling procedure, close the solenoid valve for gas processing of leaking gas.
Circuit (16) takes place in time base, and this circuit is by quartz crystal Q
2IC5 constitutes with time base frequency dividing circuit, produces low frequency, the time main pulse signal, output to an input end P of low-power scm
1.1, the base handling procedure carries out the flow processing when being used to start, and time base circuit also can be made in the inside of single chip circuit.
A telephone remote control interface circuit (17) is by optical coupling isolation circuit IC8, R
17, R
18, IC9, R
19Constitute, an input end P of low-power scm circuit is received in the output after IC8 isolates of telephone remote control I/O signal
3.0With serial output terminal P
3.1, close coal gas or want to close gas valve to prevent unexpected guaranteeing in the family that when safe, can put through has phone to close the valve of gas meter by telepilot in the family when the user goes out to forget.The intelligence gas meter can be used the destiny certificate by telephone wire to the transmission of coal gas department by this interface and modulator-demodular unit, but also the user is transmitted coal gas forward purchasing amount at the ofgas door by telephone wire electronic cards in intelligent gas meter.
The I/O buffer circuit of this circuit also can adopt pulse transformer to realize the isolation of I/O signal, adopts pulse transformer can only use an I/O bidirectional interface, saves an interface resource.
Electromagnetism ejects electronic cards socket driving circuit (18), by IC3 transistor BG
10, R
5Diode D
6Constitute, by the output port P of low-power scm IC3
3.3The control of output terminal, as the output port P of IC
3.3Output low level, electromagnetism L
2The electromagnetic actuation of ejecting card ejects electronic cards, also can use common electrical subcard socket.
Low-power consumption battery undervoltage detection circuit (19), this circuit is made of low power consumption voltage detecting device IC4.IC4 is a three terminal device, and output is connected on the P of single chip circuit IC2
2.2Input end, when cell voltage was lower than normal voltage, the IC output low level was sent the undertension signal to IC2, and IC3 starts under-voltage handling procedure, and solenoid valve for gas is closed.Voltage detecting circuit does not have to adopt used voltage comparator usually, and has adopted quiescent current to have only the low power consumption voltage detecting device of I6uA, makes it power consumption and only is the I/1000 of cmos voltage comparer.
Under-voltage indicating circuit (20) is by LED, IC4-1 resistance R
14Constitute, when under-voltage, under the control of aforementioned low-power scm circuit, to under-voltage indicating circuit, send blinker, provide indication, liquid crystal also provides indication simultaneously.
Solenoid valve for gas control circuit (21) is by Darlington transistor BG
4, DG
5, DG
7, DG
8With PNP transistor BG
6, BG
9, IC4-3, IC4-4, resistance R
21, R
22, R
23, R
24, D
3～D
5Constitute solenoid valve for gas L
1Be connected between control circuit a, the b P of IC2
3.6, P
3.7No current in the output high level solenoid valve for gas is worked as P
3.6Output low level, P
3.7The output high level, electric current is from b-L
1-a flows through valve open, works as P
3.6The output high level, P
3.7Output low level, electric current is from a-L
1-b, flow valve is closed, and valve-driving circuit also can use the field effect transistor of 2 pairs of complementations, or valve coil is divided into two, has only two transistors to get final product like this.
Solenoid valve for gas (22), as Fig. 3, mainly contain valve body (201) among Fig. 3, sealing gasket on the valve (202), yoke end cap (203), yoke (204), coil (205), valve upper cover (206), magnetic fixed core (207), fixed core O shape circle (208), yoke end cap O shape circle (209), moving iron core (2010), loop sleeve (2011), main spring (2012), plastics jam pot cover holder (2013), rubber jam pot cover (2014), back-up ring on the auxiliary spring (2015), auxiliary spring (2016), back-up ring under the auxiliary spring (2017), split washer (2018) constitutes, its fixed core (207) is made of magnetic material, the magnetic fixed core can all constitute also available magnetic material and the compound formation of permeability magnetic material with magnetic material.The most handy rareearth magnetic material of magnetic material, permeability magnetic material is preferably used electrical pure iron.This valve also designs a simple and reliable pressure relief mechanism in order to drive valve reliably, pressure relief mechanism is by moving iron core (201O), rubber jam pot cover (2014) is housed on the terraced steps of lower end, back-up ring on the auxiliary spring (2015), auxiliary spring (2016), back-up ring under the auxiliary spring (2017), split washer (2018) constitutes, mesopore is also just like step shown in the figure (4), when driving valve, the attractive force that coil produced is not enough to overcome the elastic force and the gas pressure of main spring (2012), but can overcome the elastic force of auxiliary spring, inhales to make the coal gas pressure release to fixed core, simultaneously because moving iron core sucks the enhancing of coil suction, make it to overcome the elastic force of main spring, valve is opened fully, and inhales on the magnetic fixed core.When outage, remain on the fixed core by the magnetic fixed core, keep close valve state by main spring when closing valve.Coil (2011) also can be by the two-wire coiling, and top and another coil end of one of them coil linked, and driving circuit only gets final product with two transistors like this, but winding volume is twice.
Sound indicating circuit (23) is by hummer F
1, BG
3, R
10Constitute, by the P of IC3
3.2Output signal control is as the P of IC3
3.2During level, hummer F
1Sounding, the P of IC3
3.2During output low level, hummer is sounding not.
Liquid crystal display circuit (24) is made of the P of IC3 LCD LCD and liquid crystal display drive circuit IC6
1.4, P
1.5Data-signal and control signal as liquid crystal display drive circuit.LCD LCD can show actual gas consumption, but also remaining forward purchasing amount in the display card, and signs such as valve state when cell voltage is not enough, provide under-voltage indication.Liquid crystal display drive circuit can be by I
2The C bus device constitutes, and have only SDA, SCA two piece I/Os to finish between driver IC 6 and the single-chip microcomputer IC3 this moment.The also optional single-chip computer with low power consumption that is used in the built-in LCD driving of one-chip computer can omit like this, and lcd driver also can save mechanical counter because LCD has been arranged.
In order to reduce cost, artificial intelligence safety-type low power dissipation electron card liquid crystal gas meter also can still be used traditional mechanical counter without liquid crystal display circuit, and the various duties of table are indicated by the different sounds of sound circuit.
Intelligence gas meter working routine (25) is by firstization program, read-write card program, enabling decryption of encrypted program, coal gas measurement program, artificial intelligence usefulness gas trace routine, steal gas disposal program, under-voltage handling procedure, battery dismounting handling procedure, artificial intelligence and constitute with airshed self study handling procedure, vibration processing program, gas leakage handling procedure, remote telephone communication handling procedure, economize on electricity processing physiology sequence etc.The economize on electricity handling procedure stops the clock concussion of low-power scm after not having input signal or handling input signal, makes single-chip computer with low power consumption be in STOP state least in power-consuming.Make single-chip computer with low power consumption break away from the STOP state by input signal, thereby reach the purpose of economize on electricity.
Principal character of the present utility model is:
Electronic cards (1) is by the low-power consumption Serial E
2PROM memory circuit IC1, plastic casing constitute.The pin of IC1 constitutes the electronic cards pin;
Electronic cards (2) in the table is by the low-power consumption Serial E
2PROM constitutes, and at following low-power scm circuit I/0 port, read-write control down and in the table, the read-write pin of electronic cards IC2 links to each other, and reads and writes.
Low consumption one-chip computer circuit (3) by can working under the voltage of very low frequency and 2～3.3V, and can constitute with the one-chip computer of the power-down state that interrupts withdrawing from lowest power consumption.Program storage is made in the inside of one-chip computer;
Electronic cards interface circuit (4) constitutes required I/O, the CLOCK of electronic cards read-write, CS/RST, PRG FUS signal respectively by the I/O port of one-chip computer IC3;
Card power control circuit (6) is by transistor power supply switch BG
1And resistance R
1Constitute, by the port of IC3, the switch of control card power supply reaches the purpose of economize on electricity;
Gas measurement inductive circuit (7), a bit of permanent magnet of peace on mechanical type gas measurement device metering gear train, magnetic sensor K
2Be installed in its next door, mechanical gas measurement conversion of signals is become electric impulse signal, input to then on the input end of IC3, carry out gas measurement and charge;
Plug-in card testing circuit (8) is by the detector switch K that puts in place
1, resistance R
6Constitute, output is connected on the input port of IC3, provides the plug-in card signal that puts in place to IC3;
Tamper battery detection circuit (10) is by gas-robbery resistence detecting device K
4, resistance R
10Constitute K
4One terminates on the Vcc K
4The other end and resistance R
10Link to each other, the gas signal of stealing of output is connected on input port of IC3 dirt;
Solenoid valve line break detection circuit (11) is by transistor BG
2, resistance R
12Constitute with the input port of single chip circuit IC3, the grid of field effect transistor is received on the Vcc, provides a solenoid valve line disconnection signal to IC3, starts the gas disposal program of stealing;
An anti-dismounting sensing circuit (12) is by detector switch K
5, R
11Go into to fail port with one of IC3 and constitute, be used for providing an illegal gas dismounting signal of stealing, start the gas disposal program of stealing to low-power scm IC3;
A vibration-sensing circuit (13) is by shock sensor K
7, R
13Constitute with an input end of low-power scm IC circuit 3, will illegally dismantle action or earthquake and convert vibration signal to, be used for providing vibration signal the starting shock handling procedure to IC3;
A coal gas gas leakage detects input interface circuit (14), by photoelectrical coupler IC7, resistance R
14, R
15Constitute, help in the coal gas gas leakage signal of accepting gas alarm output, its output signal is connected to the input end of IC3;
Circuit (15) takes place in base in the time of one, by quartz crystal Q
2With clock circuit IC5 road structure will, its output is connected to an input end of low-power scm IC circuit 2; This circuit can be accomplished the inside of IC3;
A telephone remote control mouth circuit (16) is by buffer circuit IC8, IC9, resistance R
16, R
17, R
18Constitute its input/output signal, be connected to an input port and output port of low-power scm IC circuit 3;
Battery undervoltage detection circuit (19), IC4 constitutes by the low power consumption voltage testing circuit, and the output of IC4 is connected on the input port of IC3, provides battery under-voltage signal to IC3;
Solenoid valve for gas (22), the fixed core (207) of the self-holding electromagnetic valve of a band pressure relief device is a magnetic;
Liquid crystal display circuit (23), IC6 constitutes by LCD LCD liquid crystal display drive circuit, and the data and the control signal of LCD is provided by the I/O port of single-chip computer with low power consumption IC3.LCD is installed in the front of table.
Intelligence gas meter working routine (25).
The handling procedure that wherein economizes on electricity makes table not have the input clock concussion to stop, and is in STOP state least in power-consuming and has only after metering signal or other signal Processing are intact, can revert to state least in power-consuming again, realizes low-power consumption, purpose of saving.
Major advantage of the present utility model is:
1, easy to use, fundamentally changed traditional mode that looks meter and charge from door to door, prevent Steal gas, guarantee the recovery of gas charge, and realize the charge automation.
2, reliability height, low cost of manufacture.
3, simple in structure, do not change the production equipment that has coal gas now, investment of production is few.
4, using the gas meter that this technology can use transforms.
5, on the basis of original Gas Production equipment, increase a small amount of investment and can produce low The power consumption gas electronic card for pre-payment gas.
Claims (2)
1, a kind of artificial intelligence safety-type low power dissipation electron card liquid crystal gas meter is made of electronic cards automatic charging gas meter, it is characterized in that:
An electronic cards (1) is by Low-Power CMOS technology serial read-write E
2The shell of PROM storage integrated circuit and band pin constitutes;
Electronic cards (2) in the table is by the low-power consumption Serial E
2PROM constitutes, and is installed in the table, provides read-write control signal at the I/O interface of following low-voltage, single-chip computer with low power consumption IC3, is used for recorded and stored down with data-signal control, and the user purchases coal gas amount and data such as gas sign surreptitiously in advance;
A low-voltage, single-chip computer with low power consumption (3) is used for reading coal gas forward purchasing amount from aforementioned electronic cards, writes down actual operating data in electronic cards, realizes using gas control system, gas fee;
An electronic cards interface circuit (4), electronic cards socket (5), be used for aforementioned low-voltage, electric connection the between single-chip computer with low power consumption IC3 and the electronic cards, under the control of software, convert the I/O port signal of one-chip computer circuit to electronic cards read-write required control signal, clock signal, data-signal;
A card power control circuit (6) is used for blocking power supply control under an output signal control of an output terminal of aforementioned single-chip computer with low power consumption;
A gas measurement sensing circuit (7) is installed on the mechanical gas measurement device (7), is used for converting mechanical meter action to electric signal, and the input port that outputs to aforementioned low-voltage, single-chip computer with low power consumption measures, charges;
Machinery or gas measurement device (8), being used for aforementioned gas measurement sensing circuit provides mechanical metering signal;
A plug-in card testing circuit (9), whether the electronic cards socket that is used for detected electrons card insertion automatic charging gas meter puts in place, and its output is connected to aforementioned low-voltage, and an input end of single-chip computer with low power consumption snaps into a signal for it provides;
One pull out card application circuit (10)-, be used for to aforementioned low-voltage, single-chip computer with low power consumption provides and pulls out card signal, starts to pull out the card handling procedure;
A tamper battery detection circuit (11) is taken away battery or is taken the electronic section casing apart when stealing gas when the user opens state attempt at valve, and this circuit is to aforementioned low-voltage, single-chip computer with low power consumption provides one to steal the gas signal, start the gas-robbery resistence program, valve-off stops air feed;
A solenoid valve line break detection circuit (12), an input end to aforementioned low-voltage, single-chip computer with low power consumption when being used to detect the user and illegally cutting off the electromagnetism line provides the illegal gas signal of stealing, and is used to start anti-key gas disposal program;
A gas-robbery resistence sensing circuit (13) is used to detect illegal dismounting, and will dismantle the action switching electrical signals provides one to steal the gas signal to low-voltage, single-chip computer with low power consumption, is used to start the gas-robbery resistence handling procedure;
A vibration-sensing circuit (14) is used for detecting vibrations, will dismantle action or earthquake and convert electric signal to, outputs to an input port of aforementioned single-chip computer with low power consumption circuit, and a vibration signal is provided, and is used for the starting shock handling procedure;
A coal gas gas leakage input interface circuit (15), be used to accept the leakage alarm signal of coal gas leak alarm, this signal is input to an input end of aforementioned low-voltage, single-chip computer with low power consumption, provides the gas leakage signal to be used for starting gas leakage to it and handle the stop solenoid valve for gas;
The basic circuit (16) that takes place in the time of one, an input end of the aforementioned single-chip computer with low power consumption of base clockwise when being used to produce provides time-base signal to be used for flow detection and surreptitiously gas judgement to it;
A telephone remote control interface circuit (17) with the pass valve signal of receiving circuit remote control output, is realized DR telephone remote closing coal gas, uses destiny certificate to coal gas department to input by telephone wire, in gas supply department to gas meter transmission user gas consumption;
Electromagnetism ejects electronic cards socket driving circuit (18), is used for pulling out card signal at aforementioned single-chip computer with low power consumption circuit output end mouth receiving, and the bullet card signal that sends is controlled and made electronic cards socket electromagnetic actuation, makes card ejection;
A low-power consumption, battery undervoltage detection circuit (19) is used for when cell voltage is not enough, and to aforementioned low-voltage, single-chip computer with low power consumption provides a cell voltage shortage signal, starts under-voltage handling procedure;
A under-voltage indicating circuit (20) is used under an output port control of aforementioned single-chip computer with low power consumption, and when appearance was under-voltage, under-voltage LED light provided the under-voltage indication of flashing;
A solenoid valve for gas control circuit (21) is used in aforementioned low-voltage, under the control of single-chip computer with low power consumption output port, realizes the keying of solenoid valve for gas;
A solenoid valve for gas (22) is used for realizing air feed control under aforementioned solenoid valve for gas control circuit control;
A sound circuit (23) is used for providing coal gas forward purchasing quantity not sufficient under aforementioned low-voltage, the control of single-chip computer with low power consumption output port, and battery is under-voltage to wait sound indication;
A liquid crystal display circuit (24) is used for showing the duty of gas consumption, residue forward purchasing amount and automatic charging gas meter under low-power consumption, the control of low-voltage one-chip computer circuit;
A group intelligent gas meter working routine (25), with the work of controlling intelligent coal gas, realization read-write card, surreptitiously gas disposal of metering, artificial intelligence use traffic, time self study, under-voltage processing, battery are dismantled processing, are shaken functions such as the processing of handling, leak gas, telephonic communication processing, the processing of economizing on electricity;
2, show gas-robbery resistence electronic cards pre-payment automatic charging gas meter according to right 1 described low power consumption liquid crystal, it is characterized in that:
1), electronic cards (1), by Serial E
2PROM memory circuit (1), the plastic casing of live contact constitutes;
2), the table in electronic cards (2), this is fastened in the table, by the low-power consumption Serial E
2PROM constitutes, and its read-write, data-signal are by low-voltage, and the I/O line of single-chip computer with low power consumption provides;
3), low-voltage, the single-chip computer with low power consumption circuit be by working under low-voltage, and can be by interrupting withdrawing from the low-voltage that power down least in power-consuming (economize on electricity) stop clock concussion state, low-power scm IC3 formation, program storage is made in IC3 inside;
4), electronic cards interface circuit (4), control signals such as electronic cards I/O, CLOCK are provided by the I/O port of low-voltage, single-chip computer with low power consumption;
5), card power control circuit (6), constitute by switching transistor, resistance, provide control by an output terminal of single-chip computer with low power consumption;
6), gas measurement sensing circuit (7), an input end by gage probe and low-voltage, single-chip computer with low power consumption IC3 constitutes, convert the mechanical metering signal of mechanical type gas measurement device to electric impulse signal, be connected to the input end of IC3, measure, charge;
7), electronic cards plug-in card testing circuit (8), by detector switch K
1, resistance R
6Constitute, snap into the input end that a signal is connected to IC2, send to single-chip microcomputer and snap into a signal, start electronic cards Card Reader program, read coal gas forward purchasing amount;
8), tamper battery detection circuit (10), constitute by detecting device, its output is connected to low-voltage, an input end of single-chip computer with low power consumption provides surreptitiously gas signal to single-chip microcomputer IC3;
9), solenoid valve line break detection circuit (11), by transistor BG
6, resistance
12, IC3 an input port, the detection line parallel with the solenoid valve line constitutes, and when detection line breaks, provides the solenoid valve disconnection signal to low-voltage, input end of single-chip computer with low power consumption IC3;
10), anti-dismounting sensing circuit (12), constitute by the input port of detector switch and IC3, provide illegal dismounting signal to low-voltage, single-chip computer with low power consumption;
11), vibration-sensing circuit (13), constitute by the input port of shock sensor and IC3, it is exported to low-voltage, single-chip computer with low power consumption provides vibration signal;
12), coal gas leak alarm input interface circuit (14), constitute by buffer circuit, its output links to each other with the input end of low-voltage, single-chip computer with low power consumption IC3 provides the gas leakage signal to it;
13), circuit (15) takes place in a time base, base clock when being used to produce to an input end of aforementioned single-chip computer with low power consumption, provides time-base signal to be used for flow detection and steals gas and judge to it;
14), a telephone remote control interface circuit (16), be used for receiving remote telephone and coal gas forward purchasing amount and by telephone wire transmission gas using quantity by telephone remote control, input/output signal links to each other with serial i/O mouth of single-chip computer with low power consumption IC3, realizes the bidirectional linked list communication;
16), low-power consumption battery undervoltage detection circuit (19), constitute by three end low power consumption voltage detecting devices, corresponding output signal is connected in the input end of low-voltage, single-chip computer with low power consumption IC3, for it provides battery under-voltage signal;
17), solenoid valve for gas control circuit (21), by two mutually the transistor circuits of group constitute, can under the control of the delivery outlet of low-voltage, single-chip computer with low power consumption, change direction of current flow, realize opening and closing solenoid valve for gas;
18), solenoid valve for gas (22), the fixed core of this valve is that the valve of magnetic has pressure relief mechanism;
19), liquid crystal display circuit (24), by LCD LCD, liquid crystal display drive circuit constitutes, and provides the data and the control signal of LCD by single-chip computer with low power consumption IC3, liquid crystal display drive circuit can be done in IC3 inside;
20), low power dissipation electron card prepayment gas meter working routine (25), make it when not having input signal, be in the power down clock least in power-consuming concussion halted state of shaking, during the signal input, state of activation just is when metering is finished or after other input signal handles, just recovered state least in power-consuming.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95231776 CN2246311Y (en) | 1995-07-25 | 1995-07-25 | Gas meter having low power loss safety and artificial intelligence |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95231776 CN2246311Y (en) | 1995-07-25 | 1995-07-25 | Gas meter having low power loss safety and artificial intelligence |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2246311Y true CN2246311Y (en) | 1997-01-29 |
Family
ID=33876304
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95231776 Expired - Fee Related CN2246311Y (en) | 1995-07-25 | 1995-07-25 | Gas meter having low power loss safety and artificial intelligence |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2246311Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101853347A (en) * | 2010-04-27 | 2010-10-06 | 中兴通讯股份有限公司 | Dismounting monitoring method and device |
| CN102339502A (en) * | 2010-10-09 | 2012-02-01 | 上海复展照明科技有限公司 | Method and system for controlling gas meter based on system instruction and user operation |
| CN105449449A (en) * | 2014-08-26 | 2016-03-30 | 鸿富锦精密工业（深圳）有限公司 | Electronic product |
| CN106781054A (en) * | 2016-12-02 | 2017-05-31 | 西安航天计量测试研究所 | A kind of low power-consumption intelligent IC Card Water-Instrument system |
| US11264807B2 (en) | 2019-09-30 | 2022-03-01 | James Arnim White | Renewable energy metering system |
-
1995
- 1995-07-25 CN CN 95231776 patent/CN2246311Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101853347A (en) * | 2010-04-27 | 2010-10-06 | 中兴通讯股份有限公司 | Dismounting monitoring method and device |
| CN102339502A (en) * | 2010-10-09 | 2012-02-01 | 上海复展照明科技有限公司 | Method and system for controlling gas meter based on system instruction and user operation |
| CN105449449A (en) * | 2014-08-26 | 2016-03-30 | 鸿富锦精密工业（深圳）有限公司 | Electronic product |
| CN105449449B (en) * | 2014-08-26 | 2018-03-20 | 鸿富锦精密工业（深圳）有限公司 | Electronic product |
| CN106781054A (en) * | 2016-12-02 | 2017-05-31 | 西安航天计量测试研究所 | A kind of low power-consumption intelligent IC Card Water-Instrument system |
| US11264807B2 (en) | 2019-09-30 | 2022-03-01 | James Arnim White | Renewable energy metering system |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |