CN201901111U - Vehicle body controller with engine anti-theft function - Google Patents
Vehicle body controller with engine anti-theft function Download PDFInfo
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- CN201901111U CN201901111U CN 201020669606 CN201020669606U CN201901111U CN 201901111 U CN201901111 U CN 201901111U CN 201020669606 CN201020669606 CN 201020669606 CN 201020669606 U CN201020669606 U CN 201020669606U CN 201901111 U CN201901111 U CN 201901111U
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- communication interface
- interface circuit
- microcontroller
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Abstract
The utility model relates to the technical field of automobile body control and automobile electronic anti-theft, in particular to a vehicle body controller with an engine anti-theft function, which comprises a power supply processing circuit, a microcontroller, a vehicle body control driving module and a Controller Area Network (CAN) communication interface circuit; the vehicle body control driving module is electrically connected with the CAN communication interface circuit and the microcontroller; a low-frequency radio frequency processing unit, an input signal processing circuit and a K-line communication interface circuit are also arranged; the K-line communication interface circuit is connected with a diagnostic instrument; the low-frequency radio frequency processing unit is electrically connected with an anti-theft coil, and receives a low-frequency radio frequency inductive signal obtained by the anti-theft coil; the signal is output to the microcontroller through a signal processing circuit; the control output end of the microcontroller communicates with a CAN bus through the CAN communication interface circuit, and sends a corresponding control signal to an engine control module; due to the adoption of the vehicle body controller with the engine anti-theft function, so that integration and reliability of the vehicle body controller are improved.
Description
Technical field
The utility model relates to auto body control and vehicle electronics technical field of burglary prevention, is specifically related to a kind of car body controller with engine anti-theft function.
Background technology
At present, the annual auto sale amount in the whole world reaches more than 6,000 ten thousand, and recoverable amount is above 900,000,000.Vehicle in usefulness is many more, and stolen automobile is also more and more, and vehicle thefts has become an important social concern.Anti-theft technique thereby with safety, environmental protection, the energy-conservation four big problems that are listed in the automotive technology development has the vast potential for future development and the market demand.At present domestic automobile Car Burglar Alarm or starting stage, accelerate to set up Car Burglar Alarm product (Immobilizer) platform, can promote the domestic laws and regulations that form the alarms and security systems for automobiles mandatory carriage as early as possible, provide standard in the industry for the Car Burglar Alarm technology simultaneously.When automobile pollution increases sharply, effectively contain the high loss by theft rate of automobile.
And, reduced the anti-theft feature of automobile, so people have developed the Motronic control maps anti-theft locking system because automobile door lock has certain mutual opening rate.For the car that the Motronic control maps anti-theft locking system is housed; Even opening car door, cartheft also can't rely on the power of the automobile car that drives away own.Representative type Motronic control maps anti-theft locking system is work like this: in the automotive ignition key electronic chip is housed, fixing ID (being equivalent to the identification number) all is housed in each chip, when having only the ID of key chip consistent with the ID of driving engine one side, automobile could start, on the contrary, if inconsistent, automobile is automatic shutdown circuit at once, and driving engine can't be started.Without permission and change of carrying out or repacking may make anti-theft locking system operation invalid.
System's connection mode of existing Motronic control maps anti-theft controller is: coil is enclosed within on the igniting tapered end, and promptly the place of key is inserted on the bearing circle right side.When inserting key startup vehicle, key will carry out authentication communication by coil and engine anti-theft control chip, when insert be correct key the time, this authentication could be passed through, otherwise just think that illegal key automobile can't start, after key authentication is passed through, the engine anti-theft control chip will with ECM(engine management device) authenticate, can start automobile after authentication is passed through.
The current application of ECU (Electrical Control Unit) in automobile is more and more, the data communication of each electric room becomes more and more, a large amount of uses of these separation modules have simultaneously also brought problems such as cost increase, fault rate rise, wiring complexity when improving vehicle riding comfort.So, need the powerful control module of design function, realize the controller function that these are discrete, numerous current consumers are controlled Here it is BCM(Body Control Module, car body controller).In the middle of the new car exploitation, also obtained using widely at present, its collection lighting system, windscreen wiper system, vehicle window system, door-locking system, many body electricals such as command and control system system is controlled in one, promoted vehicle performance greatly, being not only the integration to technology, also is the lifting (for example application of bus or the like) to technology.Domestic product specification is to have had all multi-providers to give successful exploitation at present.
But general engine theftproof system and car body controller are two cover systems independently, in anti-theft controller and car body controller, and power module, main control chip, the partial bus communication module is reusable, so cost is higher.
But it is engine theftproof system and car body controller is integrated, relate to the communication problem of sending out coil antitheft, traditional antitheft coil is because technology limitation, communication distance can't extend, coil is very limited to the distance of Motronic control maps anti-theft controller, and the position of coil is unalterable, so thereby Motronic control maps anti-theft controller installation site onboard is very restricted.With the system communication required distance of this communication modes less than 0.5m, communication distance greater than 0.5m after communication quality will significantly decrease.
As publication number is that the disclosed a kind of length of Chinese utility application prospectus of CN201296228 is apart from the Motronic control maps anti-theft controller, just the distance that low frequency is read between IC and the main control MCU has been elongated, though this method has realized long distance, but need to increase wire harness, for example need power supply to arrive the interior reading IC of antitheft coil, disturbed by complex electromagnetic environments in the car easily, and increased interference channel controller.
The utility model content
In view of this, in order to address the above problem, the utility model provides a kind of car body controller with engine anti-theft function, and engine theftproof system and car body controller are integrated.
The purpose of this utility model is achieved in that the car body controller with engine anti-theft function, comprise power supply processing circuit, microcontroller, Body Control driver module and CAN communication interface circuit, described Body Control driver module and CAN communication interface circuit and microcontroller electrically connect, also comprise the low frequency radio frequency treatment circuit, incoming signal treatment circuit and K line communication interface circuit, described K line communication interface circuit is used for the connection diagnostic instrument, described low frequency radio frequency treatment circuit and antitheft coil electrically connect, receive the low frequency radio frequency induced signal that antitheft coil obtains, output to microcontroller by signal processing circuit, the control output end of described microcontroller is sent control signal corresponding by CAN communication interface circuit and CAN bus communication to engine control module.
Further, described low frequency radio frequency treatment circuit adopts the TMS3702 chip.
Further, described K line communication interface circuit uses the L9637 chip.
Further, described low frequency radio frequency treatment circuit electrically connects by Shielded Twisted Pair and antitheft coil.
The beneficial effects of the utility model are: by integrating, microcontroller, power supply processing circuit that anti-theft controller uses can be shared with car body controller, reduce independent control module, guarantee the safety performance of vehicle simultaneously, improved the degree of integration and the reliability of car body controller.
Description of drawings
In order to make the purpose of this utility model, technical scheme and advantage clearer, the utility model is described in further detail below in conjunction with accompanying drawing:
Fig. 1 shows the structural representation of the car body controller with engine anti-theft function.
The specific embodiment
Referring to Fig. 1, be included on power supply processing circuit, microcontroller, Body Control driver module and the CAN communication interface circuit basis of original car body controller, increase led drive circuit, LED light, low frequency radio frequency treatment circuit, incoming signal treatment circuit and K line communication interface circuit.
Described low frequency radio frequency treatment circuit adopts the TMS3702 chip, electrically connect by Shielded Twisted Pair and antitheft coil, be used for receiving the low frequency radio frequency induced signal from antitheft coil, and send to the incoming signal treatment circuit, also be used for from microcontroller received RF control signal, by the outside radiation output of antitheft coil.
Described incoming signal treatment circuit, to the low frequency radio frequency treatment circuit from the signal that antitheft coil receives amplify, demodulation, decoding and frequency division, restore digital data transmission and give microcontroller.
Be provided with the identifying algorithm module in the described microcontroller, be used for the data of microcontroller from the digital signal of incoming signal treatment circuit acquisition are decrypted, verify, and according to the checking result, by CAN communication interface circuit and CAN bus communication, send control signal corresponding to engine control module, and make corresponding demonstration by led drive circuit driving LED indicator lamp.
Described power supply processing circuit offers power supply each module of car body controller.
Described K line communication interface circuit uses the L9637 chip, is used for by K wire joint diagnostic equipment, and when diagnostic equipment sent the diagnosis control signal, microcontroller switched to the K line with communication line by the CAN bus.
In the present embodiment, adopt the half-duplex operation technology between low frequency radio frequency treatment circuit and the antitheft coil, will charge/write phase and fetch phase separate out from the time, and separate, it is more reliable and more stable to make it compare prior art.Downgoing signal (from the low frequency radio frequency treatment circuit to antitheft coil) adopts the modulation system of AM, upward signal (antitheft coil is to the low frequency radio frequency treatment circuit) adopts the modulation system of FM, work in 134.2 kHz, do not disturb mutually, FM is applied to the return signal of inductor, can effectively avoid the noise jamming that causes easily owing to weak signal.Therefore can adopt length to be connected to antitheft coil apart from twisted-pair feeder, extreme length can reach 4m, makes things convenient for car load factory to arrange the lead of driving compartment, and controller installation site onboard also relatively flexibly.
The control method of the car body controller with engine anti-theft function of the antitheft control of present embodiment is, the repeater that is arranged in the automobile key carries out communication with wireless low frequency radio frequency mode and antitheft coil, carry out encryption communication between antitheft coil and the low frequency radio frequency treatment circuit, the reception low frequency radio frequency induced signal that receives is transferred to the low frequency radio frequency treatment circuit, the incoming signal treatment circuit, to the low frequency radio frequency treatment circuit from the signal that antitheft coil receives amplify, demodulation, decoding and frequency division, restore digital data transmission and give microcontroller; Microcontroller invokes authentication algorithm chip, be used for the data of microcontroller from the digital signal of incoming signal treatment circuit acquisition are decrypted, verify, and according to the checking result, K line communication interface circuit by the L9637 chip is communicated by letter with the K line, send control signal corresponding to engine control module, i.e. checking is passed through, and then controls start the engine, then attonity or locking driving engine are not passed through in checking, and make corresponding demonstration by led drive circuit driving LED indicator lamp.
The above is only for the utility model that preferably is not limited to of the present utility model, and obviously, those skilled in the art can carry out various changes and modification and not break away from spirit and scope of the present utility model the utility model.Like this, if of the present utility model these are revised and modification belongs within the scope of the utility model claim and equivalent technologies thereof, then the utility model also is intended to comprise these changes and modification interior.
Claims (4)
1. the car body controller that has the engine anti-theft function, comprise power supply processing circuit, microcontroller, Body Control driver module and CAN communication interface circuit, described Body Control driver module and CAN communication interface circuit and microcontroller electrically connect, it is characterized in that: also comprise the low frequency radio frequency treatment circuit, incoming signal treatment circuit and K line communication interface circuit, described K line communication interface circuit is used for the connection diagnostic instrument, described low frequency radio frequency treatment circuit and antitheft coil electrically connect, receive the low frequency radio frequency induced signal that antitheft coil obtains, output to microcontroller by signal processing circuit, the control output end of described microcontroller is sent control signal corresponding by CAN communication interface circuit and CAN bus communication to engine control module.
2. the car body controller with engine anti-theft function as claimed in claim 1 is characterized in that: described low frequency radio frequency treatment circuit adopts the TMS3702 chip.
3. the car body controller with engine anti-theft function as claimed in claim 1 is characterized in that: described K line communication interface circuit uses the L9637 chip.
4. as each described car body controller with engine anti-theft function in the claim 1 to 3, it is characterized in that: described low frequency radio frequency treatment circuit electrically connects by Shielded Twisted Pair and antitheft coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020669606 CN201901111U (en) | 2010-12-20 | 2010-12-20 | Vehicle body controller with engine anti-theft function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020669606 CN201901111U (en) | 2010-12-20 | 2010-12-20 | Vehicle body controller with engine anti-theft function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201901111U true CN201901111U (en) | 2011-07-20 |
Family
ID=44271710
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201020669606 Expired - Fee Related CN201901111U (en) | 2010-12-20 | 2010-12-20 | Vehicle body controller with engine anti-theft function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201901111U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106256616B (en) * | 2015-06-19 | 2018-10-19 | 株式会社三国 | The anti-theft device of vehicle |
-
2010
- 2010-12-20 CN CN 201020669606 patent/CN201901111U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106256616B (en) * | 2015-06-19 | 2018-10-19 | 株式会社三国 | The anti-theft device of vehicle |
| CN108773343A (en) * | 2015-06-19 | 2018-11-09 | 株式会社三国 | The anti-theft device of vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110720 Termination date: 20181220 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |