CN2546849Y - Digital type pre-payment water or gas meter - Google Patents
Digital type pre-payment water or gas meter Download PDFInfo
- Publication number
- CN2546849Y CN2546849Y CN 02223240 CN02223240U CN2546849Y CN 2546849 Y CN2546849 Y CN 2546849Y CN 02223240 CN02223240 CN 02223240 CN 02223240 U CN02223240 U CN 02223240U CN 2546849 Y CN2546849 Y CN 2546849Y
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- cpu processor
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Abstract
The utility model relates to a prepayment water-gas meter which adopts CUP processor as a core, water and gas quantities purchased by user uses multi-digital random encrypted numbers which are inputted to the CUP processor for confirmation by keyboard, the pulse signal of the sampling circuit is transmitted to the CPU processor for automatic counting, the CPU processor respectively outputs the command to a switch valve circuit for controlling water and gas, the data is outputted to EEPROM memory for storage and then is displayed by LCD module, power supply voltage is monitored by an under-voltage detection module. The utility model has the advantages of novel concept, reasonable design, advanced technique, excellent performance and wide application.
Description
Technical field
The utility model relates to a kind of measuring apparatus, is specifically related to a kind of digital-code type prepayment water wasting, gas meter, flow meter.
Background technology
Existing water, gas meter, flow meter mostly are the mechanical type count table, manual metering charge, and required personnel are many, and labour intensity is big, the wage cost height, the error cheating happens occasionally, and it is serious to be in arrears with expense phenomenon, causes heavy economic losses for water supply, gas unit; IC-card prepayment water wasting, gas meter, flow meter are being carried out by some units and resident family now, adopt IC-card as information carrier, efficiently solve and are in arrears with the expense phenomenon, but owing to expose IC-card seated connection mouth on the housing, make controller be subject to destructive the attack, vulnerable to pollution is damaged simultaneously, and serviceable life is not long.Because the logical encrypt of IC-card own is not strong, is decrypted easily and duplicates in addition, poor reliability exists managerial leak.
Summary of the invention
Technical problem to be solved in the utility model is: the original backward situation that thoroughly changes traditional stem-winder counting manual metering charge, avoid error cheating leak and be in arrears with the expense phenomenon, expose the IC-card seat on the housing to existing IC-card prepaid table and easily be damaged to attack and pollute and the IC-card drawback of duplicating that easily is decrypted is improved, and a kind of accurate measurement, reliable operation be provided, anti-ly attack, antijamming capability is strong, data security, advanced technology, the digital-code type prepayment water wasting of function admirable, gas meter, flow meter.
The technical solution adopted in the utility model is: this digital-code type prepayment water wasting, gas meter, flow meter has the CPU processor, sample circuit, the switch valve circuit, keyboard circuit, eeprom memory, under-voltage detection module, LCD MODULE, and power unit, foregoing circuit is a core with the CPU processor, the water that the user buys, tolerance is represented with the arabic numeral sign indicating number of multidigit accidental enciphering, and these a plurality of numerals are inputed to the CPU processor by keyboard and circuit by the user, the identification of CPU processor, confirm, finish digital-code encryption and deciphering, according to water, tolerance is sent out by norm, close the valve order to the switch valve circuit, by the unlatching of switch valve circuit by-pass valve control or close, the pulse signal of sample circuit collection send the CPU processor to count automatically, under-voltage detection module monitoring power voltage, when on the low side, the CPU processor sends and closes the valve order to the switch valve circuit, and the switch valve circuit is valve-off again; The CPU processor is also finished man-machine conversation by keyboard circuit, the CPU processor also outputs signal to LCD MODULE, the parameter and the controller current state that show input by LCD MODULE, the CPU processor also is connected to eeprom memory with data message output, data are dumped, and the data of storage are not lost, power unit is a lithium battery, for the each several part circuit provides working power.
The utility model adopts advanced digital technology to be applied in water, the gas meter, flow meter, is the water that the user is bought.Gas quantity is represented with the arabic numeral sign indicating number of eight accidental encipherings, these are to comprise the controller table number, buy number of times, purchase volume, random number, returned many information such as number last time, various control sign indicating number through special computing generation, and be input to the eight digit number word in the CPU processor of this controller by keyboard by user oneself, the correct back of CPU processor recognition and verification also returns to original purchase volume data, generate one simultaneously and return number, as the return code of buying next time, be stored in the eeprom memory, the CPU processor receives and is installed in the pulse signal that metering base table inner sensor is sent here, and according to the pulse signal institute's data recovered of examining and making cuts, when data are examined and made cuts to a certain value (this data value can be set), system will cut off user's water supply automatically, the gas passage is reminded the user: " water of purchasing; tolerance is few; need on time buy water; tolerance ", this moment, the user pressed the lower keyboard "start" button, system opens user's water supply automatically, air supply channel, when data are examined and made cuts to " 0 ", system cuts off user's water supply automatically, air supply channel, thereby realize pre-payment control, when user's transmission of data once more, and data recovered is greater than zero the time, the water supply of the automatic connecting subscribers participating of system, air supply channel.The utility model replaces IC-card as information carrier with the data input, can effectively avoid IC-card seated connection mouth to expose on the housing, has also just prevented artificial destruction and has polluted damage, and the people who has also prevented IC-card has avoided water supply for duplicating the cheating leak.The economic loss that gas unit is great, the utility model is novel, reasonable in design, accurate measurement, reliable operation, anti-ly attack, antijamming capability is strong, data security, intuitive display, advanced technology, function admirable.Concrete characteristics are as follows:
The utility model adopts the user to buy the mode of eight digit number sign indicating number exchange prepaid data, and digital exchange prepaid data is for solving vulnerable that IC-card pre-payment product exists, and the vulnerable to pollution problem proposes
Number contains the double meaning of coding and password, is promptly encoded according to encryption rule by computing machine.
Digital swap data: the numeric data code that is transmitted is by the numeric data code representative of one group of distortion.
The definition of digital exchange prepaid data: the data of transmission are the water that is used for exchanging prepayment, gas purchase volume data.
Digital exchange prepaid data control technology and products thereof principal feature
1. hardware security
Do not exist to expose the bayonet socket problem, do not have the data transmission body to exist, therefore just do not have bootlegging and black market bargain, can avoid any type of attack.
2. several hundred million groups of above numbers almost do not have the possibility of deciphering.
Because prepaid equipment and digital publishing system form strict one-to-one relationship, therefore can produce cryptographic algorithm according to factors such as access times, quantity purchase, running times, and rely on the different cryptographic libraries of above-mentioned data call, produce the number that has only equipment and the both sides of system to understand;
Adopt 8 figure place coding modes, and exist, help the transmission and the exchange of data with plain mode.Return code can verification system safety;
Owing to adopted 8 decimal number representation modes, just provide necessary condition for the keyboard input.Adopted keyboard mode just can realize the airtight fully of equipment.
Digital swap data mode has adopted appointment data quantitative limitation method, and therefore in the number more than several hundred million groups, operable digital quantity dynamically remains 990 groups, has the possibility of souning out input hardly, therefore has high safety coefficient.
3. do not exist by the technology hidden danger of outside world.
4. be not afraid of pollution, accommodative ability of environment is strong.
5. life of product surpasses 10 years, and quiescent current is 5-6uA
6. equipment power consumption hardly, very energy-conservation
7. paying dues need not the appointed place, can adopt the call voice payment system, and very convenient user can reduce outlet's quantity, reduces the management system investment to greatest extent
After adopting digital switching technology, the user can pay dues to relevant outlet in person and buy number; Also can adopt the call voice payment system to pay dues and obtain number; Also can pay dues to the financial institution of authorizing and obtain number by phone.When paying dues, only provide eight device numbers and eight user's return codes to get final product, therefore, the small investment of management system is safeguarded most convenient, and safety coefficient is the highest, greatly makes things convenient for the user to participate in applying of prepaid technology.
8. the Subscriber Management System investment is little, and it is few to layout, safeguard simply, and device security, for example, user friendly sell water, gas work just can be finished with two minicomputers in a city, than the low hundreds of times of 1000 site costs.
9. the shearing device of new technology guarantees to realize effective control.
10. novel gage probe is guaranteed that system data successively decreases to increase progressively with the base table data and is consistent.
11. water, gas control system system adopts unified standard, guarantees that properties of product are stabilized to low cost, (saving IC-card than IC-card table);
12. national exclusive product, after-sales service system is perfect.
13. carrier-free contact swap data, but online transaction by modes such as WAP or short message, information service centers, can realize operated from a distance;
Digital-code type pre-payment controller product meets ten factors that the pre-payment product is really applied in China, we can foretell: existing contact IC-card pre-payment control technology is a transitional product, finally will be replaced by digital-code type pre-payment control technology.
Description of drawings
Fig. 1 is the utility model theory diagram
Fig. 2 implements circuit theory diagrams for the utility model
Fig. 3 is the utility model water meter outside drawing
Fig. 4 is the outer chart of the utility model gas meter, flow meter
Embodiment:
Referring to Fig. 1, Fig. 2: A:CPU processor P IC16C63
The PIC16C57 chip is as microprocessor chip: mainly finish data message---digital encryption and decryption; Come controlled valve by norm according to tolerance when the user is used combustion gas, finish gas quantity prepaid function; To the tolerance automatic gauge of user the time with gas; Send when monitoring power voltage is on the low side and close the valve order; Finish the man-machine conversation function: the parameter and the current state of controller that show input; For making data dump and to make the data of its storage not lose, periodically be kept at user's usefulness gas information among the EEPROM; Have functions such as false proof, gas-robbery resistence, maloperation identification record, emergency gas simultaneously.B: sample circuit
Sample circuit is mainly finished the collection of pulse signal: adopt the double dry-reed pipe sampling, send the CPU processor to count automatically the pulse signal of gathering.C: keyboard circuit
Keyboard portion adopts 3X5 (8 I/O lines) matrix type structure.RC5 (16), RC6 (17), (18) three I/O of RC7 are as line, by pull-up resistor (R13, R16, R18, R19) receive+3.6V on; RC0 (11), RC1 (12), RC2 (13), RC3 (14), (15) four I/O lines of RC4 are as alignment.Wherein 10 numerical keys (0-9), 5 function keys.D: under-voltage detection module
This module is made up of the under-voltage detection chip of HT7027, reduce to 2.7V when following when supply voltage (lithium battery), under-voltage detection chip output low level signal is given the CPU processor, after the CPU processor receives low level signal, send the pass valve signal, notice switch valve circuit valve-off.E: display module
Display module adopts LCD to show:
Liquid crystal display circuit is made up of the HT1621 binding module, and the CPU processor links to each other with the HT1621 chip by three I/O lines, can show purchase tolerance, residue tolerance, emergent, fault, break rules and regulations, password is wrong, input password, open state such as valve.F: switch valve circuit
According to having or not of controller residue tolerance, the CPU processor sends the switch valve order:
When residue tolerance was zero, CPU sent and closes the valve order, finishes the pass valve events.
Purchase destiny sign indicating number (it is non-vanishing that institute purchases tolerance) when input, after controller confirmed that number is correct, CPU sent out the valve order, finishes out valve events.The G:EEPROM storer
The CPU processor links to each other with AT24LC02 by 2 I/O mouth lines, and system has adopted AT24LC02 as EEPROM in design.Do not lose when making data can dump and make the data power down of its storage, the CPU processor periodically is kept at user's usefulness gas information among the EEPROM.H: power unit (seeing block diagram)
3.6V/3AH being controller each several part (sample circuit, eeprom memory, display circuit, undervoltage detection circuit, CPU processor, keyboard circuit), lithium battery provides 3.6V working power.
Digital-code type prepay water meter of the present utility model and its technical scheme of digital-code type prepayment diaphragm gas meter, design concept are same, specifically, its theory diagram all is same with implementing circuit diagram as shown in Figure 1 as shown in Figure 2, its difference of water meter and gas meter, flow meter is only different with the valve body of be connected control in mechanical profile, what water meter connected control is dynamoelectric water valve, and what gas meter, flow meter connected control is electric gas valve.
Circuit diagram is analyzed as follows:
IC1:PIC16C63 IC2:AT24LC02 U3:LCD display module IC4:HT7027
(1) R1 (10K) constitutes reset circuit of SCM with C2 (104), and single-chip microcomputer can be resetted when powering on reliably;
(2) pull-up resistor R5 (1M), R4 (1M) and tongue tube MC, GR constitute the controller sample circuit: judge at first whether tongue tube GR is closed: the 26th pin RB5 of IC1 is by high step-down when tongue tube GR is closed; Judge then whether tongue tube MC is closed, and the 25th pin RB4 of IC1 is by high step-down when tongue tube MC is closed; Tongue tube MC and GR take turns closure once, and single-chip microcomputer will be counted once automatically.When tongue tube MC, GR were closed simultaneously, single-chip microcomputer sends to be operated order against regulations and corresponding prompt is arranged.
(3) XTAL (2.0MHz) and C6 (22P), C7 (22P) constitute the single-chip microcomputer oscillatory circuit, produce the 2MHz oscillation frequency.
(4) do not lose when making the data power down of storage, single-chip microcomputer links to each other with EEPROM (AT24LC02) by 2 I/O lines (RB0, RB1), and user's usefulness gas information is kept among the EEPROM (AT24LC02).
(5) reduce to 2.7V when following when supply voltage, the 2 pin output low levels of voltage checking chip IC4 (HT7027) after the input pin RA0 (2) that links to each other with single-chip microcomputer detects low level, are sent and are closed the valve order.
(6) when residue tolerance is zero in the controller, single-chip microcomputer 23 pin (RB2) output high level, 24 pin (RB3) output low level, triode Q1 (8050), Q4 (8050), Q3 (8550) conducting, triode Q2 (8050), Q5 (8050), Q6 (8550) end, the CS2 both end voltage is 3.6V, the valve body action---close valve.
(7) behind the input number, controller is confirmed digital correct, and when residue tolerance is non-vanishing in the controller, single-chip microcomputer 23 pin (RB2) output low level, 24 pin (RB3) output high level, triode Q1 (8050), Q4 (8050), Q3 (8550) end, triode Q2 (8050), Q5 (8050), Q6 (8550) conducting, the CS2 both end voltage is 3.6V, the valve body action---drive valve.
(8) residue tolerance equals 3 cubic inches in controller, and single-chip microcomputer sends and closes the valve order, presses " start key ", and the user can meet an urgent need 3 cubes and use gas; Single-chip microcomputer sends out the valve order.When 3 cubes of tolerance used up, single-chip microcomputer sent once more and closes the valve order, carries out and closes valve events, presses start key again, and emergency function lost efficacy.
(9) controller is carried out any operation, must at first press " start key ", show residue tolerance this moment on the LCD panel.Press " query key ", show successively on the liquid crystal display to add up to purchase gas number of times, accumulative total gas consumption, return code, table number.When input was digital, mistake was imported a numeral, pressed the numeral that " clear key " can remove the mistake input.
Claims (1)
1, a kind of digital-code type prepayment water wasting, gas meter, flow meter, it is characterized in that having CPU processor, sample circuit, switch valve circuit, keyboard circuit, eeprom memory, under-voltage detection module, LCD MODULE and working power, foregoing circuit is a core with the CPU processor, the arabic numeral sign indicating number of accidental enciphering is keyed in the processor to CPU by keyboard circuit, the CPU processor is discerned, confirms, encrypts, is deciphered the numerical code signal of input, output switching signal is connected to the switch valve circuit, and the output of switch valve circuit connects and by-pass valve control; The pulse signal of sample circuit collection is connected to the CPU processor, and the CPU processor is counted after receiving this pulse signal automatically; Power supply voltage signal is connected to under-voltage detection module and detects input end, and the output of under-voltage detection module is connected to the CPU processor, and the output of CPU processor is connected to the switch valve circuit again; CPU processor output parameter, status signal are connected to LCD MODULE; The CPU processor also connects eeprom memory with data-signal output, and working power is a lithium battery, and its voltage output is connected to each circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02223240 CN2546849Y (en) | 2002-01-11 | 2002-01-11 | Digital type pre-payment water or gas meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02223240 CN2546849Y (en) | 2002-01-11 | 2002-01-11 | Digital type pre-payment water or gas meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2546849Y true CN2546849Y (en) | 2003-04-23 |
Family
ID=33700996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02223240 Expired - Fee Related CN2546849Y (en) | 2002-01-11 | 2002-01-11 | Digital type pre-payment water or gas meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2546849Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100412515C (en) * | 2005-04-11 | 2008-08-20 | 西安华丰投资发展有限公司 | IC card intelligent gas meter |
| CN102122412A (en) * | 2010-12-30 | 2011-07-13 | 宁波三星电气股份有限公司 | Method for controlling prepaid electric power meter based on IC (Integrated Circuit) card |
| CN104252744A (en) * | 2014-07-25 | 2014-12-31 | 安徽恩米特微电子股份有限公司 | Power supply device of intelligent water meter |
| CN109458480A (en) * | 2018-12-18 | 2019-03-12 | 北京首创热力股份有限公司 | A kind of key formula smart lock valve closing |
| US10902391B2 (en) | 2012-06-28 | 2021-01-26 | Contour Technology (Pty) Ltd. | Automated transaction system |
-
2002
- 2002-01-11 CN CN 02223240 patent/CN2546849Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100412515C (en) * | 2005-04-11 | 2008-08-20 | 西安华丰投资发展有限公司 | IC card intelligent gas meter |
| CN102122412A (en) * | 2010-12-30 | 2011-07-13 | 宁波三星电气股份有限公司 | Method for controlling prepaid electric power meter based on IC (Integrated Circuit) card |
| CN102122412B (en) * | 2010-12-30 | 2012-07-25 | 宁波三星电气股份有限公司 | Method for controlling prepaid electric power meter based on IC (Integrated Circuit) card |
| US10902391B2 (en) | 2012-06-28 | 2021-01-26 | Contour Technology (Pty) Ltd. | Automated transaction system |
| CN104252744A (en) * | 2014-07-25 | 2014-12-31 | 安徽恩米特微电子股份有限公司 | Power supply device of intelligent water meter |
| CN109458480A (en) * | 2018-12-18 | 2019-03-12 | 北京首创热力股份有限公司 | A kind of key formula smart lock valve closing |
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Legal Events
| 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 |