CN200997151Y - Inductive safety device of automobile - Google Patents
Inductive safety device of automobile Download PDFInfo
- Publication number
- CN200997151Y CN200997151Y CN 200620141807 CN200620141807U CN200997151Y CN 200997151 Y CN200997151 Y CN 200997151Y CN 200620141807 CN200620141807 CN 200620141807 CN 200620141807 U CN200620141807 U CN 200620141807U CN 200997151 Y CN200997151 Y CN 200997151Y
- Authority
- CN
- China
- Prior art keywords
- circuit
- microprocessor
- contactless card
- master control
- control set
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
An automobile induction burglar alarm is provided, which comprises a main control device arranged in the automobile and an induction card corresponding to the RFID, the main control device is arranged with a power circuit and a microprocessor U1, and is connected with a control circuit in the car via an execution circuit. The induction card is provided with a microprocessor U2. The utility model is characterized in that: a main transmission circuit and an auxiliary receiving circuit which connect with the microprocessor U1 are arranged in the main control; a main receiving circuit and an auxiliary transmission circuit which connect with the microprocessor U2 are arranged in the induction card correspondingly, which forms a two-way RF signal transmission recognition device.
Description
Technical field: the utility model relates to the inductive theft-proof device of a kind of induction anti-theft device of automobile circuit, particularly radio frequency identification.
Background technology: present automobile generally all is provided with the wireless induction alarm for antitheft and easy to use.Master control set is installed in the car, circuits such as the door lock of Control of Automobile inside, alarm, and correspondence is furnished with contactless card, carries out the wireless remote control operation.General contactless card and master control set all are the single channel rf transmission signals, are easy to decoded theft device and receive and decode, and encryption is poor, and is safe and reliable inadequately, and contactless card all needs the button trigger action, can't respond to automatically, and operation is convenient not enough rapidly.
Summary of the invention: at the deficiencies in the prior art, the utility model provides a kind of signal transmission security, inductive vehicle anti-theft device easy to use.
The utility model comprises the master control set that is installed in the car and the contactless card of less radio-frequency correspondence, be provided with power circuit, microprocessor U1 in the master control set, and be connected with the automotive interior operation circuit by executive circuit, also be provided with microprocessor U2 in the contactless card, also be provided with the main radiating circuit and the secondary receiving circuit that connect microprocessor U1 in the master control set, then corresponding main receiving circuit and the secondary radiating circuit that connects microprocessor U2 that be provided with constitutes two-way transmission rfid device in the contactless card.
Two-way is adopted in the signal exchange transmission of master control set of the present utility model and contactless card, and signal is encrypted by rolling code and variation function coding, and signals security is reliable, can not be received decoding.And, adopt full-automatic radio-frequency (RF) identification induction between contactless card and master control set, enter range of receiving and get final product auto-unlocking, need not to connect key and trigger, operation is more convenient.
Further specify the utility model below in conjunction with drawings and Examples.
Description of drawings: Fig. 1 is the circuit block diagram of embodiment;
Fig. 2 is the circuit connecting line figure of contactless card;
Fig. 3 is the circuit connecting line figure of master control set.
Embodiment: as shown in Figure 1, generally provide burning voltage to each several part in the master control set by power circuit, be provided with microprocessor U1 in the master control set, and be connected with the automotive interior operation circuit by executive circuit, also be provided with microprocessor U2 in the contactless card, also be provided with the main radiating circuit and the secondary receiving circuit that connect microprocessor U1 in the master control set, then corresponding main receiving circuit and the secondary radiating circuit that connects microprocessor U2 that be provided with constitutes two-way transmission rfid device in the contactless card.The transmission frequency of general main radiating circuit is 133KHZ, and transmitting range is short, and the transmission frequency of the secondary radiating circuit of contactless card is 315MHZ, and transmitting range is longer, and according to actual needs, frequency also can change adjustment.
As shown in Figure 3, the microprocessor U1 of master control set adopts single-chip microcomputer PIC16F630, power circuit then adopts voltage stabilizing chip 7805 and peripheral components and parts to form, and main radiating circuit is made up of TMS3705 radio frequency chip and peripheral components and parts, and secondary receiving circuit then adopts the integrated receiver module M1 of 315MHZ.Internal control circuits such as the door lock of the general corresponding connection automobile of executive circuit, alarm, can be provided with a plurality of performance elements controls respectively, relay K 1, K2, K3 and relative trigger triode Q1, Q2, Q3 form performance element respectively, the door lock state circuit that the optically-coupled pipe Q4 that is connected with microprocessor U1, Q5 then connect automotive interior.
As shown in Figure 2, the microprocessor U2 of contactless card also adopts PIC16F630, and main receiving circuit is made up of TMS37122 radio frequency chip and peripheral components and parts, and secondary radiating circuit then adopts the integrated transmitter module M2 of 315MHZ.Also be connected with keyswitch S1 on the pin of microprocessor U2 simultaneously, be used for manually transmitting.
When contactless card during near automobile, the 315MHZ coded signal that the secondary radiating circuit of contactless card sends is received by the secondary receiving circuit of master control set, microprocessor U1 decodes, detect door lock state by optically-coupled pipe Q4, Q5 simultaneously, if keyed then by the executive circuit auto-unlocking, after the driver opened primary power and igniting into the car, microprocessor U1 instructed main radiating circuit to stop paying out the 133KHZ signal, the contactless card no signal receives dormancy, reduces battery consumption.Also can manually control in the contactless card dormant state, after the switch S 1 that pushes button, can launch the 315MHZ signal, make automobile send sound and light signal, seek under the situations such as car very convenient in the parking lot at a distance.
After car was flame-out, the signal emission that master control set can recover 133KHZ automatically woke contactless card work up, if this moment, the driver took card from car, after exceeding induction range, microprocessor U1 does not close the door and can connect alarm signal by executive circuit the door lock state-detection, and having closed the door then shuts automatically.When the 315MHZ of contactless card signal was not received by master control set, promptly the driver can connect the chimes of doom light signal by executive circuit if other people open the door by force not by car, prevents to force open the door, and was safe.
Claims (3)
1, a kind of inductive vehicle alarm, comprise and be installed in the interior master control set of car and the contactless card of less radio-frequency correspondence, be provided with power circuit, microprocessor U1 in the master control set, and be connected with the automotive interior operation circuit by executive circuit, also be provided with microprocessor U2 in the contactless card, it is characterized by: also be provided with the main radiating circuit and the secondary receiving circuit that connect microprocessor U1 in the master control set, then corresponding main receiving circuit and the secondary radiating circuit that connects microprocessor U2 that be provided with constitutes two-way transmission rfid device in the contactless card.
2, inductive vehicle alarm according to claim 1 is characterized by: the transmission frequency of main radiating circuit is 133KHZ, and the transmission frequency of the secondary radiating circuit of contactless card is 315MHZ.
3, inductive vehicle alarm according to claim 1 and 2, it is characterized by: the main radiating circuit of master control set is made up of TMS3705 radio frequency chip and peripheral components and parts, and the main receiving circuit of contactless card is then corresponding to be made up of TMS37122 radio frequency chip and peripheral components and parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620141807 CN200997151Y (en) | 2006-12-29 | 2006-12-29 | Inductive safety device of automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620141807 CN200997151Y (en) | 2006-12-29 | 2006-12-29 | Inductive safety device of automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200997151Y true CN200997151Y (en) | 2007-12-26 |
Family
ID=38995586
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620141807 Expired - Fee Related CN200997151Y (en) | 2006-12-29 | 2006-12-29 | Inductive safety device of automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200997151Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103661246A (en) * | 2013-12-13 | 2014-03-26 | 中山菲柯特电子电器有限公司 | Car entering device free of remote controller |
| CN105365771A (en) * | 2014-08-08 | 2016-03-02 | 叶春林 | Method and structure for preventing car door lock from being decoded |
-
2006
- 2006-12-29 CN CN 200620141807 patent/CN200997151Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103661246A (en) * | 2013-12-13 | 2014-03-26 | 中山菲柯特电子电器有限公司 | Car entering device free of remote controller |
| CN105365771A (en) * | 2014-08-08 | 2016-03-02 | 叶春林 | Method and structure for preventing car door lock from being decoded |
| CN105365771B (en) * | 2014-08-08 | 2020-09-08 | 叶春林 | Method for preventing decoding of vehicle door lock and structure thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20071226 Termination date: 20111229 |