CN2441178Y - Remote controller for intellectual card prepayment - Google Patents
Remote controller for intellectual card prepayment Download PDFInfo
- Publication number
- CN2441178Y CN2441178Y CN 00210015 CN00210015U CN2441178Y CN 2441178 Y CN2441178 Y CN 2441178Y CN 00210015 CN00210015 CN 00210015 CN 00210015 U CN00210015 U CN 00210015U CN 2441178 Y CN2441178 Y CN 2441178Y
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- infrared
- data
- central processor
- processor cpu
- circuit
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Abstract
The utility model relates to a remote controller for intellectual card prepayment, which comprises a central processing unit CPU, a memory, a liquid crystal display, an input keyboard, an infrared receiver and an infrared transmitter which are respectively connected with the CPU. The remote controller cancels a bayonet for inserting and pulling IC cards on an original gas meter through receiving and transmitting data in an infrared mode, and avoids artificial attack and the invasion of corrosion gas. The utility model is widely used in various memory card control devices, for instance, IC card controllers of electric meters, water meters and gas meters.
Description
The utility model belongs to the device of using infrared transmission.
Along with prepaid smart card (IC) controller the applying of fields such as gas meter, water meter, ammeter, heating pipeline and CATV (cable television), some problems that itself exists appear gradually.With contact intelligent card (IC) gas meter is example, and this table serves as media with IC-card, it is inserted transmit the data that administrative authority sends in the controller that is installed in gas meter, realizes intended purposes.Because the bayonet socket of plug-in card is arranged on the controller, and the inside and outside communicates, and suffers extraneous various forms of destruction easily.As artificial attack, be about to high-voltage electric field and add the gas meter controller from bayonet socket, can make the inside chip program chaotic at once, device circuitry is damaged by electric shock, the forfeiture control function.Secondly, corrosive gas enters in the controller and can damage components and parts.Moreover, plug the IC-card sheet repeatedly, cause bayonet socket to contact imprecision easily with card.
The purpose of this utility model is a kind of smart card prepaid telechiric device of design, cancels the bayonet socket on the former IC-card controller, utilizes infrared ray to give the controller that is installed on the gas meter with the data transfer of smart cards for storage.For achieving the above object, the utility model is by the following technical solutions:
A kind of smart card prepaid telechiric device, it comprises:
1, the I/O mouth and the storer of central processor CPU are connected to form information storage circuit, realize the access to data;
2, the I/O mouth of central processor CPU links to each other with input keyboard, realizes people and telechiric device dialogue function;
3, the I/O mouth of central processor CPU links to each other with display, forms the data display circuit of smart card;
4, the I/O mouth of central processor CPU links to each other with infrared remote receiver, forms the infrared data receiving circuit;
5, crystal oscillator and Sheffer stroke gate connect to form the oscillatory feedback circuit, produce infrared signal; This infrared signal is sent into 74LS00 (12) after amplifying through 74LS00 (4,5,6) electric current, central processor CPU will be launched data content and send into 74LS00 (13) after 74LS00 (9,10,8) electric current amplifies, promptly data and infrared signal with after pass through triode V again
1Amplify and enter infrared transmitting tube L
1The infrared emission circuit is formed in emission.
In addition, at the controller that is positioned on the gas meter infrared reception, radiating circuit are installed also.Structure is the same.In prepaid administrative center central processor CPU and infrared transmitting device are installed also.
During use, the user holds smart card prepaid telechiric device and pays dues to prepaid administrative center, and administrative center launches infrared data to telechiric device, and this telechiric device is stored in these data in the storer by receiving circuit and memory circuit.With interior telechiric device is aimed at gas meter at 2 meters during the user goes back home then, canned data in the storer is passed through the infrared emission circuit transmission to the controller on the gas meter by the emission key on this telechiric device input keyboard.The data that administrative center is sent in realization (purchasing tolerance) are stored in the interior purpose of storer of controller on the gas meter.In order to grasp the retaking of a year or grade key of gas meter internal storage residue tolerance (air consumption) on can keypad, the infrared emission circuit that makes telechiric device transmits to the table middle controller, during requirement table internal controller will show residue tolerance or purchase tolerance by infrared to telechiric device.At this moment the receiving circuit of telechiric device receives controller sends on the gas meter infrared information and it is deposited in the storer.Display key on the keypad is connected data display circuit, shows residue tolerance or purchase tolerance on LCD.
Owing to adopt this smart card prepaid telechiric device transmission infrared signal, so can cancel the bayonet socket on the former table internal controller, avoid the erosion of various artificial attacks and extraneous etchant gas, make the controller safety and reliability.The utility model can be widely used in the various sorts of memory cards opertaing device, as water meter, ammeter, gas meter IC-card controller.
Description of drawings: Fig. 1 is the embodiment functional-block diagram, and Fig. 2 is the circuit diagram of embodiment, and Fig. 3 is the computer program process flow diagram of embodiment.
Narrate embodiment with reference to the accompanying drawings, so that further specify the utility model.
Present embodiment comprises central processor CPU and the storer that links with it respectively, LCD, input keyboard, infrared remote receiver and infrared transmitter.They are built-up circuit separately.Narration respectively below.
16,15 mouthfuls by central processor CPU link to each other with 5,6 pin of storer respectively, and by pull-up resistor R4 and R5 power supply, 8 pin of storer connect power supply simultaneously, and 1,2,3,4,7 pin ground connection are formed information storage circuit, realize the access to data.1 mouthful of central processor CPU connects power supply by capacitor C 3,10 mouthfuls of ground connection, and 4,5 mouthfuls connect crystal oscillator XTAL two ends, again by capacitor C 1, C2 ground connection, for CPU provides oscillation frequency.The model of CPU is 89c51, and the model of storer is an IC-card 2401.
6,7,8 mouthfuls of central processor CPU link to each other with 1,2,3 pin on pull-up resistor R1, R2, R3 and the keyboard respectively, 11,9 mouthfuls of CPU with keyboard on 4,5 pin be connected to form keyboard scanning circuit, realize people and telechiric device dialogue function.Form keyboard scan matrixes, 6 (2*3) keys on the corresponding keyboard for 6,7,8 mouthfuls and 9,11 mouthfuls that are CPU.They are respectively emission keys, and the data in the telechiric device are sent to controller in the gas meter; Display key shows the data of storing on LCD; The rubescent external signal of retaking of a year or grade key, the telechiric device controller in gas meter requires it will remain tolerance (air consumption) and gives telechiric device by the infrared signal loopback; Reset key is removed the information in the storer.Two keys are standby in addition.
17,18,19 mouthfuls of central processor CPU link to each other with 4,3,2 pin of LCD respectively, 1 pin ground connection of LCD, and 5 pin connect power supply and form data display circuit.
2 mouthfuls and infrared remote receiver D of central processor CPU
31 pin of 3PIN links to each other, 2 pin ground connection of infrared remote receiver, and 3 pin pass through resistance R
7Connect power supply and form the infrared data receiving circuit.
Cross-over connection resistance R between 2,3 pin of Sheffer stroke gate 74LS00
10With crystal oscillator XTAL1, pass through capacitor C respectively at the two ends of crystal oscillator XTAL1
5And C
6Ground connection, 1 pin of Sheffer stroke gate 74LS00 connect power supply and form the oscillatory feedback circuit, produce infrared signal.This infrared signal is sent into Sheffer stroke gate 74LS00 (12) pin after amplifying through Sheffer stroke gate 74LS00 (4,5,6) electric current.Central processor CPU will be launched 10 pin (9 pin connect power supply) that data send into Sheffer stroke gate 74LS00 and amplify after 8 pin are sent into 13 pin of Sheffer stroke gate 74LS99, promptly data and infrared signal with, export through resistance R from 11 pin of 74LS00 afterwards
8To triode V
1Pass through resistance R after the amplification
9Enter infrared transmitting tube L
1, form the infrared emission circuit.
The course of work of this device is: press power switch, CPU starts working.CPU at first carries out initialization according to program design, promptly gives each I/O poll tax on children value, to the storer zero clearing.Have or not infrared signal by CPU and infrared remote receiver reception, judgement then? when infrared signal, judge by CPU whether its password identical again, if password is identical, then by storer with this data storage.If do not have infrared signal or password not to the time program will carry out downwards, by CPU keyboard is scanned.If there is not key to press, then return master routine.When pressing, then handles on key key assignments (judge key number).When being emission key, whether CPU is new data (the coal gas amount of buying from administrative center just) with decision data, if, then these data being sent to the controller in the gas meter, battery has fired is returned master routine; If not new data, then return master routine.When being display key, by the data in the liquid crystal display displays storer.When for the retaking of a year or grade key, telechiric device will send read back waveform to peripheral hardware (controller in the gas meter) by infrared transmitter, controller in the gas meter will remain tolerance or purchase tolerance and return by infrared, receive by this telechiric device infrared remote receiver, so that detect residue tolerance (air consumption) or purchase tolerance.
Present embodiment is cancelled the bayonet socket on the former IC-card gas meter with the infrared transmission data, avoids artificial and attacks and the etchant gas intrusion, guarantees that the controller secure on the gas meter is reliable.
Claims (1)
1, a kind of smart card prepaid telechiric device is characterized in that it comprises:
1), the I/O mouth and the storer of central processor CPU be connected to form information storage circuit, realizes the access to data;
2), the I/O mouth of central processor CPU links to each other realization people and telechiric device dialogue function with input keyboard;
3), the I/O mouth of central processor CPU links to each other the data display circuit of composition smart card with display;
4), the I/O mouth of central processor CPU links to each other composition infrared data receiving circuit with infrared remote receiver;
5), crystal oscillator and Sheffer stroke gate connect into the oscillatory feedback circuit, the generation infrared signal; This infrared signal is sent into 74LS00 (12) after amplifying through 74LS00 (4,5,6) electric current, central processor CPU will be launched data content and send into 74LS00 (13) after 74LS00 (9,10,8) electric current amplifies, be data with infrared signal with after amplify by triode V1 again and enter infrared transmitting tube L1 emission, form the infrared emission circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00210015 CN2441178Y (en) | 2000-08-22 | 2000-08-22 | Remote controller for intellectual card prepayment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00210015 CN2441178Y (en) | 2000-08-22 | 2000-08-22 | Remote controller for intellectual card prepayment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2441178Y true CN2441178Y (en) | 2001-08-01 |
Family
ID=33576988
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00210015 Expired - Fee Related CN2441178Y (en) | 2000-08-22 | 2000-08-22 | Remote controller for intellectual card prepayment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2441178Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101894421A (en) * | 2010-07-19 | 2010-11-24 | 成都秦川科技发展有限公司 | Remotely controlled intelligent gasmeter |
-
2000
- 2000-08-22 CN CN 00210015 patent/CN2441178Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101894421A (en) * | 2010-07-19 | 2010-11-24 | 成都秦川科技发展有限公司 | Remotely controlled intelligent gasmeter |
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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 |