CN200988471Y

CN200988471Y - Intelligent card type hidden automobile anti-theft device

Info

Publication number: CN200988471Y
Application number: CNU2006200668593U
Authority: CN
Inventors: 古双志
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-10-27
Filing date: 2006-10-27
Publication date: 2007-12-12
Anticipated expiration: 2016-10-27

Abstract

The utility model relates to an intelligent card invisible automobile anti theft device, which is connected between an electro door lock and an ignition circuit, and comprises a radio frequency identifying module A which is composed of a reading device and an electronic label and used for communicating the ignition circuit when feeding the electronic label, an electric power source delay circuit E used for providing working power supply to the radio frequency identifying module A, a card feeding delay circuit D used for feeding the electronic label to supply ignition time for the automobile; an engine locking circuit C used for cutting off the ignition circuit when the ignition operation is illegally and an alarm B. The ignition circuit can work normally only after using legal electronic label and the theftproof function cannot be eliminated after the electro door lock is damaged and the electric power source of the mainframe is cut off over a period. The utility model is easy to arranged without changing the prior automobile original circuit.

Description

The stealthy car alarm of intelligent card type

Technical field

The utility model relates to a kind of anti-joyride device, is the stealthy car alarm of a kind of intelligent card type specifically.

Background technology

Along with the fast development of China's auto-domain, have family more and more of automobile, as the consumption device of a high value, its antitheft problem more and more causes people's attention.Make a general survey of present car alarm market, Car Burglar Alarm mainly contains three kinds of mechanical types, network type, electronic type, mechanical type mainly is by bearing circle locking is realized anti-theft feature, and its device obviously, tapered end is the same substantially, and it is very ripe and than being easier to by violence damage to crack the technology of tapered end; Network type is to realize switch door, the starter motor of automobile, the automobile etc. of stopping by network, this respect use the most extensive GPS of being because its erected cost is high and will pay reasons such as rent, the people of use is fewer.What use at most at present is the electronic type Car Burglar Alarm, is the main flow in market.Electronic anti-theft device is broadly divided into two kinds, and a kind of is the unidirectional type electronic anti-theft device, and its radical function is the switch door by inspection vehicle, is shaken or the illegal electric door lock warning of quilt, effectively threatens the robber by alarm and takes next step action; Another kind is two-way electronic anti-theft device, and its radical function is automobile when any unusual sound is arranged, and Car Burglar Alarm can initiatively send dissimilar alarms to the car owner, is knocked, the switch door, moves etc. by the people as automobile.No matter unidirectional type still is the reversible electronic anti-theft device, the operation all be to operate by the antenna remote control, its main weakness be easily join, easily decoded, memoryless.When last antitheft after, will lose anti-theft feature behind the power cut-off certain hour.The wireless remote control product is vulnerable to many-sided the interference in addition, easily causes false triggering when thunderstorm or surrounding environment sound are big.REID RDFI (Radio Frequenoy Zdentifition) is a kind of automatic identification technology that begins to rise the nineties, and its principle of work is to utilize radiofrequency signal to realize that by the space coupling non-contact type signal transmission and the information of passing through to be transmitted reach the technology of the purpose of identification.The REID system is made up of electronic tag (radio-frequency (RF) tag) and reader usually, and electronic tag is used this sign information as thing to be identified always with the electronic data that has certain format.Communication protocol by agreement between reader and the electronic tag is transmitted information.In the REID system, its core is electronic tag, and reader is that the design according to electronic tag designs.The frequency of operation of electronic tag is not only determining principle of work (inductive coupling or capacitive coupling), the decipherment distance of radio-frequency recognition system, is also determining the complexity and the equipment cost of electronic label reader.Frequency range that the application of electronic tag occupies and frequency have generally acknowledged division in the world, promptly be positioned at the ISM wave band, the representative type frequency of operation has: 125KHZ, 13.56MHZ, 27.12MHZ, 433MHZ, 2.45GHZ, 5.8GHZ, press the difference of frequency of operation, electronic tag can be divided into variety classeses such as low frequency (UF), high frequency (HF), superhigh frequency (UHF) and microwave.The low-frequency electronic label is compared with the electronic tag of high frequency, superhigh frequency, has that label is cheap, saving in energy, penetrating metal object power are strong, frequency of operation is not subjected to advantages such as the forthright and sincere control constraint of radio frequency line.China is at the electronic label chip design aspect technology of the HF of UF frequency range comparative maturity, independent development meets the electronic label chip of IS014443 TYPE A TYPE B and IS015693 standard, and is successfully applied in traffic class all-purpose card and the China second-generation identity card.

Summary of the invention

The purpose of this utility model provides the stealthy car alarm of the more satisfactory intelligent card type of a kind of theftproof performance.

The purpose of this utility model can realize by following technical measures:

The stealthy car alarm of a kind of intelligent card type is connected between electric door lock and the ignition circuit, and it comprises:

Radio frequency identification module is made up of reader and electronic tag, when being used to brush electronic tag, ignition circuit is connected.

The power supply time delay circuit is used for providing working power to radio frequency identification module;

The time delay circuit of swiping the card is used to brush electronic tag, so that the automotive ignition time to be provided;

Locked engine circuit, cut-off point ignition circuit when being used for illegally unblanking to light a fire;

And annunciator.

In the radio frequency identification module of this Car Burglar Alarm, electronic tag adopts the read-only type of 125KHZ, contactless, ID card that chip is TK4100 as the identification instrument, and this chip is a kind of CMOS integrated circuit microchip that widely uses in the electronic tag field.Chip internal has 64 memory organization by laser programming burning, has wide dynamic range at buffer zone, electric weight, voltage limitator is arranged, and full-wave rectifier is arranged.Its mode of operation is when employing Manchester modulating-coding, and service conditions is as long as TK4100 chip exterior coil two ends produce the AC induced voltage) 3.5VPP, chip got electric work when the clock frequency of coil really was about 125KHZ.Reader adopts the 098E electronic label reader, adopts Manchester modulation coding mode to communicate by letter between this reader and the electronic tag.Can remember 1000 combined method users, for relay output.

The utlity model has following advantage:

The automatic antitheft function: Car Burglar Alarm enters anti-theft state automatically after opening electric door lock, has only and uses legal electronic tag after ignition circuit ability normal operation.Automatically terminate anti-theft feature behind the legal procedure number minute, vehicle is replied former factory line status.It is malfunctioning or disturb the potential safety hazard that causes unexpected locked engine in the driving to cause brake failure and cause to have broken through other Car Burglar Alarm.

Automatically memory, anti-trimming function: present electronic anti-theft device can lose anti-theft feature after cutting off the power supply certain hour, and it is very easy to make the burglar steal car, even this Car Burglar Alarm can accomplish that the burglar destroys electric door lock, the disconnection host power supply also can't be removed anti-theft feature after a period of time.

Adopt intelligent electronic label, every electronic tag has global uniqueness, can't duplicate, and compares with the automobile remote-control device, and it has the advantage that need not battery, waterproof, shatter-resistant.

Install simply, need not change former fare road.

Anti-rob, anti-snatch function: meet and rob or meet when stopping and rob, get away as early as possible after the car owner only need stop working or hand over spoon, also can't catch fire, can only abandon car and escape even the robber takes former lock spoon.

Disguised Strong: the electronic tag inductor may be contained in the optional position of car, need not dig a hole or hole, and does not influence car shape outward appearance, makes the burglar want to destroy and but has no way of doing it.

Power consumption is little: main frame is no power at ordinary times, only in electric door lock a few minutes electricity consumption that is opened, cuts off host power supply after a few minutes automatically, replys not power consumption state.

Description of drawings

Fig. 1 is a circuit diagram of the present utility model.

The specific embodiment

With reference to Fig. 1, the stealthy car alarm of a kind of intelligent card type, between electric door lock and ignition circuit, be connected to a control circuit, this control circuit comprises: radio frequency identification module A, form by reader and electronic tag, when being used to brush legal electronic tag, make reader produce signal, recover former car ignition circuit; Power supply time delay circuit E is used for providing power supply to radio frequency identification module A; The time delay circuit D that swipes the card is used to brush legal electronic tag, and the automotive ignition time is provided; Locked engine circuit C, cut-off point ignition circuit when being used for illegally unblanking to light a fire; Annunciator B reports to the police when being used for illegal operation.

When unblanking, electric door lock is sent a telegram here and one the tunnel is entered power supply time delay circuit E, and another road enters locked engine circuit C.After entering power supply time delay circuit E, when the car load circuit, when oil circuit is working properly, relay K ₁Adhesive, open contact K _1-2Connect, through D ₁Rectification is to C ₁Charging, during igniting, C ₁Through R ₁Multiple unit tube T is kept in discharge ₁T ₂Conducting, K ₂Get electric release, open contact K _2-2Connect, through resistance R ₂Give electric light diode D ₂Power supply, and provide power supply, the relay K of the time delay circuit D that swipes the card simultaneously for radio frequency identification module A ₃Get electric work, K ₃Open contact K _3-2Connect normally closed contact K _3-1Disconnect, brush legal electronic tag this moment, the power supply of keeping the certain hour several seconds of reader output among the radio frequency identification module A is to capacitor C ₂K is kept in charging ₃Work, after the success of brush electronic tag, car owner's sparking, one-way SCR D ₅Anode does not have electricity and can't work, K ₄, K ₆Do not work, sparking is normal.At this moment, K ₁Do not work, cut off the radio frequency identification module a-power supply, recover former car ignition circuit, enter dormant state.

When illegally unblanking, K ₁Get electric work, to capacitor C ₁Charging, multiple unit tube T ₁T ₂Conducting, K ₂Work, K ₃Must be electric, if not method sparking this moment, one-way SCR D ₅Triggering and conducting, K ₄Work, electric, startup alert program that annunciator B gets.While K ₆Must be electric, disconnect the power supply of locked engine circuit C, the locking automobile can't start.

When the burglar cuts off host line or destroys main frame: K ₅Dead electricity is not worked, K ₆Get electric work, annunciator B gets electric work, cuts off the power supply of locked engine circuit C, and the locking automobile can't start.

Claims

1, the stealthy car alarm of a kind of intelligent card type is connected between electric door lock and the ignition circuit, it is characterized in that it comprises:

Radio frequency identification module is made up of reader and electronic tag, when being used to brush electronic tag, ignition circuit is connected;

And annunciator.

2, the stealthy car alarm of intelligent card type according to claim 1 is characterized in that the electronic tag employing chip in the radio frequency identification module is the ID card of TK4100.