CN2427395Y

CN2427395Y - Radio digital automobile cipher identifier

Info

Publication number: CN2427395Y
Application number: CN992521793U
Authority: CN
Inventors: 杨爱萍
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-12-22
Filing date: 1999-12-22
Publication date: 2001-04-25
Anticipated expiration: 2009-12-22

Abstract

The utility model relates to novel wireless digital car code identifying main and affiliated devices which are formed by using degree control integrated circuits pic 16c64, pic 1654, a radio frequency emitting integrated circuit MC2831A and a receiving integrated circuit MC3316B. The utility model is composed of a wireless receiving unit, an emitting unit, a central processing unit, a display screen, etc. Effective range is within 100 (champaign), and electricity is supplied by using a voltage stabilizing power supply. Digital cipher identification range reaches 8 bit number. The utility model is an efficient 'identity card ' of a car, provides efficient rear section for finding out stolen vehicles and has an important effect of preventing crime of stealing the vehicles.

Description

Wireless digital vehicle cryptographic means of identification

The utility model is a kind of later-model wireless digital vehicle cryptographic recognition system, has simple and easy, effective, practical specific function, the identification range of numerical ciphers is by 00000000 to the 99999999 eight digit number word of forming, it is the effective proof of identification of vehicle, for tracing stolen vehicle, pre-antitheft car crime has the effect that can not substitute.

The selective calling system of moving vehicle in the prior art all utilizes high-frequency radio to finish, and utilize radio telephone power big, use inconveniently, finish as above purposes and be waste greatly.The inventor designs this wireless digital vehicle cryptographic means of identification at the problem that prior art exists.

Goal of the invention of the present utility model is to make full use of existing traffic automation system, makes this invention utilize higher emissive power, and low one-tenth was finished traffic control system originally to management of vehicles.

The purpose of this utility model be achieved in that this device by son, main two parts form, sub-device is partly by routine processes integrated circuit PIC16C54 radio-frequency transmissions integrated circuit MC2831A, receiving integrate circuit MC3361B forms, after PIC16C54 receives launch intruction by MC3361B, to export one group of predefined 32 bit binary number signal, by MC2831A modulation back emission, 100 meters of active distances (open ground); The principle basis of main device part is identical with sub-device.After different is PIC16C64 receives 32 signals that emission partly sends by MC3361B, with the signal that receives through decoding wait handle after, will export one group 8 two to the da signal, can be directly show, or enter and computer system arranges to handle by read-out.Simultaneously, PIC16C64 can also be regularly or is done personnel's requirement by behaviour, sends specific launch intruction to sub-device at any time, and this instruction is by MC2831A modulation back emission, after the prime MC3361B of sub-device part receives, carry out the emission numerical ciphers by transferring to MC2831A after the PIC16C54 processing.

As for detailed construction of the present utility model, application principle, effect and effect, then please refer to the explanation that following adjoint does can be understood completely:

Fig. 1 is the FB(flow block) of the sub-device of the utility model;

Fig. 2 is the FB(flow block) of the utility model master device;

Fig. 3 is the utility model wireless digital password identification master device scheme circuit;

Fig. 4 is the sub-device scheme circuit of the utility model wireless digital password identification.

Please join shown in the accompanying drawing 1, mainly by receiving 2 (MC3361B), back output 3 (PIC16C54) are handled in decoding and emission 4 (MC2831A) form for sub-device.Sub-device master is installed in the automobile, when main device 1 after sub-device sends launch intruction, receive of the instruction of the sub-device of main matching requirements by 3 of sub-device by 2 to main device emission password, 3 give 4 with one group of digital data transmission of not having a setting, by 4 modulation back emissions, main device 5 is received the code signal that sub-device transmission comes.

Please refer to shown in Figure 2, main device receives the code signal that sub-device transmission comes by 2, carry out processing such as signal interpretation by 3, enter telltale 4, demonstrate the password of 8 figure places, perhaps enter the computer system of back level as required, compare with the vehicle password of reporting lost property to the authorities and react, pursue the vehicle of reporting lost property to the authorities, seek the vehicle of losing with the shortest time.

Fig. 3 is the utility model wireless digital password identification master device scheme circuit, as shown in FIG., power circuit 31 is from receiving the 16 end input voltages of the integrated circuit MC3361B that modulates, received signal is carried out the demodulation amplification through 15 ends of MC3361B, signal after demodulation is amplified is by 11 ends of PIC16C64, handle in the computer chip that two ends enter, 40,39,38,37,36,35,34,33 outputs are data acquisition ports, the input end 7 of 25 end outupt coded signals and frequency modulation effect integrated circuit MC2831A joins, and FM signal is gone out by mouth 14 and wireless transmission.

Fig. 4 is then similar to Fig. 3, and difference is that the relative PIC64 of stamen sheet that is adopted is simple, is replaced finishing by PIC16C54, and the cost of sub-device is lower, the use in the automobile of being more convenient for.

Claims

1, a kind of wireless digital vehicle cryptographic means of identification, it partly is made up of emission part and reception two, it is characterized in that: it is respectively equipped with wireless cipher and discerns main device and wireless cipher recognin device, main device is by power supply, modulation integrated circuit MC3361B, central authorities handle stamen sheet PIC16C64 and frequency modulation effect stamen sheet MC3361B constitutes, when signal by wireless receiving by the MC3361B demodulation coding after, entering into the processing stamen sheet PIC16C64 of central authorities by output port handles, the processing stamen sheet PIC16C64 of these central authorities mouth is provided with computer interface and joins with transmit mouth and MC2831A, this signal is sent out by the antenna emission through MC2831A frequency modulation merit, and the difference of sub-device and main device is that central authorities handle stamen sheet employing PIC16C54.