CN2296042Y

CN2296042Y - IC card infrared checking automatic cashier

Info

Publication number: CN2296042Y
Application number: CN97223571U
Authority: CN
Inventors: 申宏志; 孙鼎城
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-06-24
Filing date: 1997-06-24
Publication date: 1998-10-28
Anticipated expiration: 2007-06-24

Abstract

The utility model relates to an IC card infrared checking automatic charging device, composed of a vehicle-mounted part, a base part and a base management part. The vehicle-mounted part is composed of a transmitting circuit, a receiving circuit and an IC card read/write circuit, wherein, the transmitting part is a typical tunable oscillator with a multiresonant duty ratio, the receiving unit is an infrared receiving circuit, and the IC card read-write part is composed of an IC card adaptation socket, a single chip computer and an interface circuit (comprising a protective circuit); the base part is composed of a transmitting part, a receiving part and a level converter circuit, the transmitting part and the receiving part are the same as the transmitting part and the receiving part of the vehicle-mounted part, the level translator can complete the level conversion between the interfaces of the single chip computer and a microcomputer, and a three-terminal voltage stabilizing integrated package is used for supplying power for the whole device; the hardware of the base management part is composed of the microcomputer and an IC card reader/writer.

Description

IC-card infrared detection automatic accounting device

The utility model relates to a kind of IC-card infrared detection automatic accounting device, is applicable to highway no-stop charging system, traffic department inspection truck system and other relevant infrared number passes and the IC-card poke is filed system.

Existing highroad toll collection system, its automaticity all is not up to expectations, and some magnetic card Fare Collection System need just can finish second by 6-10 the charge operation of vehicle, and this class Fare Collection System requires vehicle parking, the operation of just charging.

A kind of no-stop charging system is abroad arranged, but this system majority is finished unidirectional or two-way communication between vehicle and the charge station by radio frequency, deduct the fee in communication process, domestic indivedual highways also begin to adopt this system, but radiofrequency signal has very big shortcoming in communication process; Be difficult to orientation, be subjected to easily that signal interferes with each other between the track, disturbed by foreign frequency.

Domestic now also the someone infrared communication no-stop charging system has been proposed, what adopt is over the horizon communication system, overcome above-mentioned shortcoming to a certain extent, but it is used for vehicle-mounted payment device is EEPROM, and the shortcoming that this device exists is: the confidentiality of EEPROM data and plug etc. have all brought great inconvenience.

The purpose of this utility model is to provide a kind of IC-card infrared detection automatic accounting device at the technical matters of above-mentioned existence, this device falls infrared communication and combines with IC-card, both overcome the defective (employing infrared communication) that RF-wise passes number, overcome the defective (data storage IC-card) of EEPROM plug, enciphered data again.

The purpose of this utility model is achieved in that

It is made up of vehicle-mounted, base and base management three parts.

The circuit of vehicle-mounted part constitutes:

Single-chip microcomputer links to each other through the adaptive socket of driving circuit and IC-card, and to finish the reading and writing data function to IC-card, its connected mode adds catching diode and pull-up resistor connected mode after adopting 7407 to drive.Single-chip microcomputer also links to each other with the basis set of triode T3, the emitter of T3 links to each other with the input end of integrated package of pressure-stabilizing P1, collector links to each other with total power switch with the input end of integrated package of pressure-stabilizing p2, the output terminal of integrated package of pressure-stabilizing p1, p2 is connected with single-chip microcomputer with radiating circuit, a reception circuit protection circuit respectively, for it provides working power; Infrared receiving terminal (P3) receives infrared signal after demodulation, input to the base stage of triode T1 by output terminal, the collector of triode T1 links to each other with the data receiver of single-chip microcomputer, single-chip microcomputer also links to each other with radiating circuit simultaneously, radiating circuit adopts the connected mode of standard to constitute multi resonant EDM Generator of Adjustable Duty Ratio oscillator by time base circuit 555, be connected with triode T2 at time base circuit 555 output terminals, be used for driving infrared transmitting tube.

The circuit of base part constitutes: the output terminal of infrared receiving terminal (P6) connects triode T4 base stage, the collector of T4 connects the reception data terminal of level translator, the transmitting terminal of level translator links to each other with the reception data terminal of microcomputer standard serial mouth, and microcomputer receives data and handles; Data are by the data sending terminal output of microcomputer standard serial mouth, the request transmitting terminal of microcomputer standard serial mouth and clear to send end are to the output terminal output logic level of level translator simultaneously, input to the base stage of triode T6 through resistance R 18, the grounded emitter of T6, the collector of T6 is connected with the input end of integrated package of pressure-stabilizing P5, two integrated package of pressure-stabilizing P4, P5 is respectively level translator and oscillator, the infrared receiving terminal power supply, by time base circuit 555 and C13, R15, D11, W1, W2 constitutes multi resonant EDM Generator of Adjustable Duty Ratio oscillator, increasing between the power end of timer and swept resistance W1 slides becomes resistance W2, is connected with triode T5 at timer output end.

Base management part hardware is made up of microcomputer and IC-card read write line.

Core of the present utility model is infrared communication is combined with IC-card, thereby has solved some problems that exist in the present communication system, forms the characteristics of oneself:

1. modes such as infrared communication and radio frequency are compared, and its outstanding feature is: can realize directional transmissions and reception easily, thereby can avoid the signal between each track to interfere with each other, and can carry out communication charge operation with a certain particular vehicle reliably.In addition, infrared ray is not subject to the external electromagnetic wave interference.

2. the communication charge activity duration lacks, and system can fulfil assignment under not parking situation.

3. reliable, the long transmission distance of communication, the native system effective propagation path is more than 20 meters.

4. IC-card has the logical encrypt function as data carrier, and strong security is safe, and the life-span is long, plug, easy to carry.

5. the IC-card in the onboard system also can be developed multiple function, the archives for example setting up the driver and driven, and connect with receipts, fare payment system, can Application and Development in inspection car and vehicle management system.

Fig. 1 is vehicle-mounted partial circuit figure.

Fig. 2 is base partial circuit figure.

Describe the utility model in detail below in conjunction with accompanying drawing.

As shown in Figure 1, the circuit of vehicle-mounted part constitutes:

14 pin of single chip computer AT 89C2051 (P1.2 mouth) are connected to 12 pin U4:F of driving circuit 7407, and input end 13 pin of driving circuit 7407 link to each other with 8 pin I/O data terminals of the adaptive socket of IC-card.By this path, single chip computer AT 89C2051 can read in the data in the IC-card in the single-chip microcomputer.12 pin of single chip computer AT 89C2051 (P1.0 mouth) link to each other with 11 pin U4:E of driving circuit 7407, enter 3 pin (CLK clock pin) of the adaptive socket of IC-card by 10 pin of driving circuit 7407,13 pin of single chip computer AT 89C2051 (P1.1 mouth) link to each other with 9 pin of driving circuit 7407, enter the 2 pin generation RST reset signal end of the adaptive socket of IC-card from 8 pin of driving circuit 7407,15 pin of single chip computer AT 89C2051 (P1.3 mouth) link to each other with 1 pin U4:A of driving circuit 7407,2 pin from 7407 enter 8 pin I/O data terminals of the adaptive socket of IC-card, these paths have been finished the data write-in functions of single chip computer AT 89C2051 to IC-card, the P1.4 mouth of single chip computer AT 89C2051, the P1.5 mouth respectively with 3 pin U4:B of driving circuit 7407,5 pin U4:C link to each other, 4 pin by driving circuit 7407 link to each other with programming signal PGM end with the fuse signal FUS end of the adaptive socket of IC-card with 6 pin, are used to produce required FUS of IC-card and PGM signal.18 pin of single chip computer AT 89C2051 (P1.6 mouth) link to each other with the base stage of triode T3 by R10; the emitter of triode T3 links to each other with 1 pin of integrated package of pressure-stabilizing P1; collector links to each other with total power switch ON/OFF with 1 pin of integrated package of pressure-stabilizing P2; 3 pin of integrated package of pressure-stabilizing p1, p2 are connected with radiating circuit, receiving circuit, holding circuit respectively, for it provides working power.

Receive head (P3) and receive infrared signal after demodulation, be input to the base stage of triode T1 by output terminal 2 pin, after triode T1 shaping is amplified, input to 2 pin (data receiver) of single chip computer AT 89C2051 by the collector of triode T1,3 pin (data output end) of single chip computer AT 89C2051 connect 4 pin of time base circuit 555, the radiating circuit of vehicle-mounted part is the same with the base part, is the multi resonant EDM Generator of Adjustable Duty Ratio oscillatory circuit that is made of time base circuit 555.

Shown in Figure 2, the circuit of base part constitutes:

The reception data terminal (2 pin) of the standard serial mouth RS-232C of microcomputer links to each other with 14 pin of electric pressure converter MAX232CPE, be used for receiving data, send data output to electric pressure converter MAX232CPE from the data sending terminal (3 pin) of microcomputer standard serial port RS-232C 13 pin, simultaneously, the request transmitting terminal of serial port RS-232C (4 pin) and clear to send end (5 pin) are to input end 7 pin of electric pressure converter MAX232CPE, 8 pin output logic level, through electric pressure converter MAX232CPE by 9 pin, the output of 10 pin, input to the base stage of triode T6 by resistance R 18, the grounded emitter of triode T6, the collector of triode T6 links to each other with 1 pin of integrated package of pressure-stabilizing P5, two stabilized voltage supply P4, the 3 pin output of P5 is respectively level translator, the oscillator power supply, whole device is operated in the half-duplex state, by time base circuit 555 and C13, R15, D11, W1, W2 adopts the connected mode of standard to constitute multi resonant EDM Generator of Adjustable Duty Ratio oscillator, W2 is a slide rheostat, W2 is connected between power end 8 pin and the swept resistance W1, in order to regulate the infrared emission frequency, and slide rheostat W1 is used for regulating the dutycycle of emission coefficient, then regulate infrared emission distance and scope, on time base 555 output terminals 3 pin, connect triode T5, be used for driving infrared transmitting tube LED5 by resistance R 16.

Base management partly includes microcomputer, and IC-card read write line and a cover corresponding management software, IC-card can adopt logic encryption card.

Claims

1. IC-card infrared detection automatic accounting device is characterized in that:

It is made up of vehicle-mounted, base and base management three parts;

The circuit of vehicle-mounted part constitutes:

Single-chip microcomputer links to each other through the adaptive socket of driving circuit and IC-card, to finish reading and writing data function to IC-card, its connected mode adds catching diode and pull-up resistor connected mode after adopting 7407 to drive, single-chip microcomputer also links to each other with the basis set of triode T3, the emitter of T3 links to each other with the input end of integrated package of pressure-stabilizing P1, collector links to each other with total power switch with the input end of integrated package of pressure-stabilizing p2, the output terminal of integrated package of pressure-stabilizing p1, p2 is connected with single-chip microcomputer with radiating circuit, a reception circuit protection circuit respectively, for it provides working power;

Infrared receiving terminal (P3) receives infrared signal after demodulation, input to the base stage of triode T1 by output terminal, the collector of triode T1 links to each other with the data receiver of single-chip microcomputer, single-chip microcomputer also links to each other with radiating circuit simultaneously, radiating circuit adopts the connected mode of standard to constitute multi resonant EDM Generator of Adjustable Duty Ratio oscillator by time base circuit 555, be connected with triode T2 at time base circuit 555 output terminals, be used for driving infrared transmitting tube;

The circuit of base part constitutes: the output terminal of infrared receiving terminal (P6) connects triode T4 base stage, the collector of T4 connects the reception data terminal of level translator, the transmitting terminal of level translator links to each other with the reception data terminal of microcomputer standard serial mouth, and microcomputer receives data and handles; Data are by the data sending terminal output of microcomputer standard serial mouth, the request transmitting terminal of microcomputer standard serial mouth and clear to send end are to the output terminal output logic level of level translator simultaneously, input to the base stage of triode T6 through resistance R 18, the grounded emitter of T6, the collector of T6 is connected with the input end of integrated package of pressure-stabilizing P5, two integrated package of pressure-stabilizing P4, P5 is respectively level translator and oscillator, the infrared receiving terminal power supply, by time base circuit 555 and C13, R15, D11, W1, W2 constitutes multi resonant EDM Generator of Adjustable Duty Ratio oscillator, increasing between the power end of timer and swept resistance W1 slides becomes resistance W2, is connected with triode T5 at timer output end;