CN1804741A - Intelligent automobile body network control system device and control method thereof - Google Patents
Intelligent automobile body network control system device and control method thereof Download PDFInfo
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- CN1804741A CN1804741A CNA2005101222999A CN200510122299A CN1804741A CN 1804741 A CN1804741 A CN 1804741A CN A2005101222999 A CNA2005101222999 A CN A2005101222999A CN 200510122299 A CN200510122299 A CN 200510122299A CN 1804741 A CN1804741 A CN 1804741A
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Abstract
The invention discloses an intelligent car body network control system which comprises a CPU, a door controller, a car lamp group controller and a remote control burglar alarm, wherein the CPU comprises a MCU, a switch contact scanning module, a car speed signal adjusting circuit, a motor driving module and a LCD display module; the car lamp group controller comprises a MCU and a power driving module; the door controller comprises a microcontroller module, an input signal adjusting module and an output driving module; the remote control burglar alarm comprises a microcontroller, a power managing and CAN communicating module, a vibration transducer and alarm loudspeaker driving module, a code-jumping remote control module, a wireless receiving module, a code-jumping decoding module, a temperature sensor and a temperature signal adjusting circuit; the controller uses CAN bus to form a local area network; the applied layer information code adopts SAE J1939 encoding rule. The invention also discloses a control method of the responding system.
Description
Technical field
The present invention relates to a kind of autobody control system, relate in particular to a kind of body of a motor car network control system and control method thereof.
Background technology
At present, traditional wire beam control system mode and network control mode are adopted in body of a motor car control usually.Wherein, traditional wire beam control system is by the control of relay realization to car bulb, door and window, rearview mirror etc.; No matter this control mode is aspect technical advance, reliability aspect, wiring aspect, purifies electromagnetic environment aspect, information sharing aspect, still aspect technology trends and application prospect, all lag far behind network control system, will be replaced by network control mode gradually.Network control mode is to constitute localized network by bus to realize control function, but the function of existing automotive networking control mainly is to be responsible for the control of car door, its structure as shown in Figure 1, constitute a vehicle body network by a central control unit and driver side door control unit, preceding passenger's sidecar door control unit, left back door control unit and right back door control unit, central control unit is also controlled boot and fuel tank cap simultaneously.Its weak point is: not to the control of front and back light, rain brush and washing pump etc.; Still adopt relay and fuse in such as large power-consuming equipments such as rain brush, light, the electromagnetic interference (EMI) phenomenon is serious; Underdash wire harness complex situations do not have to change substantially, do not have the demonstration of car internal and external temperature and the real-time demonstration of failure message; There are not the automatic protection of consumers such as light, lifter and the self-recovering function after the fault eliminating.
Along with the progress of society's science and technology and the raising of people's living standard, no matter be insider or general public to the evaluation of automobile be not only to rest on aspects such as function, style, price and comfort level, but the control that has risen to automobile integral body requires to have more hommization and intellectuality, therefore, be badly in need of a kind of intelligentized autobody control system of exploitation to satisfy the demand of present automobile market.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, provide a kind of and can control central door lock, motorized window, front and back lighting lamp group, motorized adjustment and heating rearview mirror, rain brush and washing pump, and show the intelligent automobile body network control system devices and methods therefor of car internal and external temperature and failure message in real time.
In order to solve the problems of the technologies described above, intelligent automobile body network control system device of the present invention comprises central controller, car door controller, auto lamp group controller and remote theft-preventing apparatus;
Described central controller comprises power management and CAN communication module, switch contact scan module, vehicle speed signal modulate circuit, motor drive module and the LCD LCDs that is connected with the MCU unit respectively; Described motor drive module comprises respectively the two-way motor-drive circuit that links with MCU, and wherein one the tunnel connects washing pump, and another road is connected with rain shaving electrical machine with the PWM mode of speed regulation; Described vehicle speed signal modulate circuit is made of operational amplifier LM224, trigger HC14 and low speed optocoupler; Described power management and CAN communication module link to each other with MCU by 3 line SPI on it; Described switch contact scan module links to each other with MCU by the SPI interface, the LCD LCDs links to each other with MCU by 8 parallel port lines, two-way motor-drive circuit on the motor drive module links to each other with MCU by a triode respectively, and the vehicle speed signal modulate circuit is connected to MCU through trigger HC14;
Described auto lamp group controller comprises power management and CAN communication module, MCU micro controller module and the power driver module that connects successively; Pass through the communication of SPI mouth between described power management and CAN communication module and the described MCU micro controller module, communication controler in the described MCU micro controller module links to each other with CAN transceiver in the described power management module, and described MCU microcontroller links to each other by the I/O mouth with described power driver module;
Described car door controller comprises micro controller module, power management and CAN communication module, input signal conditioning module and comprises the output driver module that is made of glass lifting motor control chip, centrally controrlled locking system control chip and rearview mirror control adjustment control chip that described micro controller module links to each other with described output driver module by the I/O interface respectively; Described micro controller module is connected with described input signal conditioning module with described power management and CAN communication module respectively by the SPI mode, and described micro controller module is connected with the output signal driver module by the I/O interface;
Described remote theft-preventing apparatus comprises microcontroller, power management and CAN communication module, shock sensor and alarm speaker driver module, also comprises frame hopping remote control module, wireless receiving module, frame hopping decoder module, temperature sensor, temperature signal regulation circuit; Described microcontroller is connected with power management and CAN communication module by SPI, and described microcontroller is connected with described temperature signal regulation circuit by the A/D interface; Described temperature sensor is connected with signal modulation circuit through after the dividing potential drop, and described microcontroller is connected with shock sensor by the I/O mouth; Described wireless receiving module is to link to each other by serial data line with described frame hopping decoder module; Described microcontroller is connected by the I/O mouth with described frame hopping decoder module; Described microcontroller is connected with the speaker drive module by the I/O pin; Described temperature signal regulation circuit comprises amplification arithmetical unit U1 and U2 and thermistor;
Above-mentioned each controller constitutes a localized network by the CAN bus, and its traffic rate is 125Kbps, and the application layer message coding adopts the coding rule of SAE J1939.
The method of intelligent automobile body network control system of the present invention may further comprise the steps:
The central controller controls step: the positional information of " headlamp switch judge and CAN bus command send " subroutine real-time judge combined switch of described central controller also sends command adapted thereto to bus, send firing key positional information and speed information according to given time interval timing to bus, the failure message and the storage that receive simultaneously on the bus show;
Auto lamp group controller controlled step: after the forward and backward lamp group controller of described automobile receives the instruction that bus transmits, open or closure through the corresponding light of decoding judgement driving, and detect the state of light in real time, as after finding states such as broken string, overcurrent, enter guard mode automatically and send failure message on bus;
Car door controller controlled step: described car door controller receives speed information and the key position information on the bus, detect the key information on the left front door simultaneously in real time, carry out corresponding action, and to bus transmission corresponding instruction, described right front door controller, left back door controller and right back door controller receive command information and the local key information on the bus, and the execution corresponding action, when above-mentioned any one car door controller breaks down, then send failure message to bus;
The remote theft-preventing apparatus controlled step: described remote theft-preventing apparatus receives the 315M radio-frequency information and the decoding of telepilot, send the steering order of central controlled lock then by bus, send temperature information by temperature sensor inspection vehicle internal and external temperature and to bus simultaneously, whether remote theft-preventing apparatus detects car body by shock sensor and exists unusual vibrations to judge whether safety of vehicle, if unusual then acousto-optic hint reaches antitheft purpose.
Compared with prior art, intelligent automobile body network control system devices and methods therefor of the present invention has following beneficial effect:
(1) it is less to connect determined circuit by car door, significantly reduces automotive wire bundle;
(2) cancel relay and fuse, purified electromagnetic environment in the car;
(3) because failure message all is stored in the central control unit, therefore, have the automatic protection and the restore funcitons of network diagnostic function and consumer;
(4) if shorted to earth appears in any of CAN dual-hinge line, to short circuit between anodal short circuit or circuit, the CAN system can transfer the contingency mode operation automatically to and transfer the monofilar mode operation to;
(4) Chinese character with failure message shows and prompt facility, is convenient to driver and crew and in time takes measures;
(5) PWM is adopted in the rain brush speed governing, saves the energy;
(6) can realize a series of Based Intelligent Control functions, such as: anti-pinch vehicle window function river automatic blocking is closed window function automatically, central door lock, motorized window, front and back lighting lamp group, motorized adjustment and rearview mirror heating, rain brush and washing pump be can control, and car internal and external temperature and failure message shown in real time.
Description of drawings
Fig. 1 is the structured flowchart of automotive networking control system in the prior art;
Fig. 2 is the 26S Proteasome Structure and Function synoptic diagram of intelligent automobile body network control system device of the present invention;
Fig. 3-the 1st, the structured flowchart of central controller shown in Fig. 2;
Fig. 3-the 2nd, the schematic diagram of the vehicle speed signal modulate circuit shown in Fig. 3-1;
Fig. 3-the 3rd, the main flow chart of central controller in the intelligent automobile body network control method of the present invention;
Fig. 4-the 1st, the group controller of automobile headlamp shown in Fig. 2 hardware configuration schematic diagram;
Fig. 4-the 2nd, the main flow chart of headlight photocontrol in the intelligent automobile body network control method of the present invention;
Fig. 4-the 3rd, the break in service sub-process figure of headlight photocontrol in the intelligent automobile body network control method of the present invention;
Fig. 5-the 1st, the structured flowchart of left front door controller shown in Fig. 2;
Fig. 5-the 2nd, the main flow chart of left front gate control in the intelligent automobile body network control method of the present invention;
Fig. 5-the 3rd, the break in service sub-process figure of left front gate control in the intelligent automobile body network control method of the present invention;
Fig. 6-the 1st, the structured flowchart of remote theft-preventing apparatus shown in Fig. 2;
Fig. 6-the 2nd, the circuit diagram of temperature signal regulation circuit shown in Fig. 6-1;
Fig. 6-the 3rd, the main flow chart of remote theft-preventing apparatus control in the intelligent automobile body network control method of the present invention.
Embodiment
Below in conjunction with accompanying drawing the present invention is done and to describe in further detail.
As shown in Figure 2, intelligent automobile body network control system device of the present invention comprises central controller, left front door controller, right front door controller, left back door controller, right back door controller, automobile headlamp group controller, automobile back light group controller and remote theft-preventing apparatus; Above-mentioned each controller constitutes a localized network by the CAN bus, and its traffic rate is 125Kbps, and the application layer message coding adopts the coding rule of SAE J1939.
Shown in Fig. 3-1, described central controller comprises power management and CAN communication module 302, switch contact scan module 303, vehicle speed signal modulate circuit 306 and motor drive module 304 and the LCD LCDs 305 that is connected with MCU (micro controller unit) 301 respectively; Described MCU301 adopts the MC68HC908AZ60 single chip computer architecture, has the CAN controller module, not only do not need to design the wired circuit between single-chip microcomputer and the CAN controller, and improved reliability, because motor space is comparatively nervous, select such single-chip microcomputer to provide possibility in addition for miniaturization of the present invention.Described power management and CAN communication module 302 adopt MC33889 structure chip, described CAN communication module mainly comprises MSCAN08 controller and the CAN bus transceiver among the MC68HC908AZ60, and being used for provides+5V power supply and the fault-tolerant CAN transceiver of low speed for MCU 301; The MSCAN08 controller is the CAN controller that Freescale company aims at its 8 and 16 series monolithic customizations, and this controller is supported CAN2.0B.The CAN network belongs to low speed CAN in this vehicle body network, and the figure place rate is made as 125kbps.Described switch contact scan module 303 adopts 33993 structure chips, and described switch contact scan module 303 is connected with 22 way switch, in order to detect 22 way switch input signals.Described motor drive module 304 comprises the two-way motor-drive circuit that links to each other with MCU301 respectively, and wherein one the tunnel connects washing pump, and another road is connected with rain shaving electrical machine in the PWM mode; Described motor-drive circuit adopts the BTS6143D chip structure.Described LCD LCDs adopts the OCM4X8C LCDs; The OCM4X8C LCD MODULE is the Chinese character image type LCD MODULE of 128*64 dot matrix, can show Chinese character and figure.Provide two kinds of interfaces to connect computer processor: two kinds of connected modes of 8 bit parallels and serial.Described vehicle speed signal modulate circuit is made of operational amplifier LM224, trigger HC14 and low speed optocoupler, shown in Fig. 3-2.Described power management and CAN communication module 302 link to each other with MCU301 by 3 line SPI on it; Described switch contact scan module 303 connects with MCU301 by the SPI interface, LCD LCDs 305 directly links by 8 parallel port lines and MCU301, two-way motor-drive circuit on the motor drive module 304 connects with MCU301 by a triode respectively, and vehicle speed signal modulate circuit 306 is connected to MCU through trigger HC14.
Utilize above-mentioned central controller, the combined switch status information of automobile can input to single-chip microcomputer MC68HC908AZ60 by MC33993 chip and 14 street lamp photoswitches, and sends corresponding instruction to bus; Gather speed information and firing key positional information and issue to bus; The command information of information and CAN bus by described central controller output meter pilot lamp, thereby the corresponding pilot lamp on rain shaving electrical machine, the instrument panel before driving; Receive various failure messages and storage on the bus, the LCD liquid crystal with diagnostic trouble code turns over the screen Presentation Function, and the LCD LCDs can demonstrate current up-to-date failure message at any time, turns over the screen key by operation and can also consult historical failure information.LCD LCDs 305 shows information such as temperature in the car, outside the car under normal condition.
Shown in Fig. 4-1, the group controller of auto lamp described in the present invention comprises power management and CAN communication module 401, MCU 402 and the power driver module 403 that connects successively; Pass through the communication of SPI mouth between described power management and CAN communication module 401 and the described MCU micro controller module 402, communication controler in the described MCU micro controller module 402 and the CAN transceiver interface in the described power management module 401, described MCU microcontroller 402 links to each other by the I/O mouth with described power driver module 403.Described auto lamp group controller comprises two controllers controlling headlight group and back group lamp respectively, and described usually preceding group lamp comprises high beam, dipped headlights, side-marker lamp, fog lamp, left and right sides steering indicating light; Common described back light group comprise fog lamp, brake lamp, backup lamp, side-marker lamp (comprising licence plate) and about turn to.Former and later two lamp group controllers receive and carry out headlamp switch signal from central controller from the CAN bus respectively, scan each light state, and send light state and failure message by the CAN bus to the central controller of vehicle body network, and show by LCD.
It is 8 8-digit microcontrollers of MC68HC908GZ16 that described MCU micro controller module 402 in the auto lamp group controller among the present invention adopts model, and described MCU micro controller module 402 comprises timer, general purpose timer, A/D converter, communication controler and the SPI expansion communication module of comparing function.BTS724G chip and BTS6143D chip that described power driver module 403 adopts INFINEON company to manufacture.Described BTS724G is used for doing the reservation control and the fault detect chip of left and right sides steering indicating light (front and back), fog lamp (front and back), side-marker lamp (front and back), brake lamp (back), backup lamp (back); Described BTS6143D is used as left high beam (preceding), right high beam (preceding), the switch of light modulation (preceding), right dipped headlights (preceding) is controlled and the fault detect chip in the vicinity.The power management chip MC33889 that described power management module adopts Freescale company to produce.Described CAN communication module comprises MSCAN08 controller and CAN bus transceiver, and described MSCAN08 controller is the CAN controller that Freescale company aims at its 8 and 16 series monolithic customizations, and described MSCAN08 controller is supported CAN2.0B.
As shown in Figure 2, described car door controller comprises left front door controller, right front door controller, left back door controller and right back door controller, and wherein, left front door controller is the typical case the most, describes the 26S Proteasome Structure and Function of left front door controller below in conjunction with accompanying drawing.
Shown in Fig. 5-1, described car door controller comprises micro controller module 501, power management and CAN communication module 502, input signal conditioning module 503 and comprises the output signal driver module 504 that is made of glass lifter control chip 41, centrally controrlled locking system control chip 42 and rear-view mirror control module 43 that described micro controller module 501 links to each other with described output signal driver module 504 by the I/O interface respectively; Described micro controller module 501 is connected with described input signal conditioning module 503 with described power management and CAN communication module 502 respectively by the SPI mode, and described micro controller module 501 is connected with output signal driver module 504 by the I/O interface.In described left front every controller, the microcontroller MC68HC908GZ16 chip structure that described micro controller module 501 adopts Freescale company to produce; Described power management and CAN communication module 502 adopt MC33889 structure chip, for the MCU micro controller unit provides+5V power supply and the fault-tolerant CAN transceiver of low speed; Described input signal conditioning module 503 adopts the MC33993 chip structure, in order to detect 22 way switch input signals and firing key positional information; Described glass lifting motor control chip 41 adopts the MC33486H bridge driving power chip of Freescale company; Described centrally controrlled locking system control chip 42 adopts the BTS7710 chip of Infineon; Described rear-view mirror control module 43 comprises that rearview mirror is adjusted control chip 431, rearview mirror folds control chip 432 and rearview mirror defrosting control chip 433; Described rearview mirror is adjusted control assembly 431 and is adopted the TLE6208-3G chip structure, and the folding control assembly 432 of described rearview mirror adopts the MC33486 chip structure, and described rearview mirror defrosting control assembly 433 adopts the BTS6143 chip structure.Above-mentioned car door controller has two kinds of duties, comprises the receiving system state and sends state of a control.Wherein, the receiving system state can receive the information of relevant system state on the CAN bus, as ignition signal, collision alarm, vehicle speed signal etc.; Send state of a control can be on the CAN bus the various status informations of transmission control device.
Shown in Fig. 6-1, remote theft-preventing apparatus in the intelligent automobile body network control system device of the present invention comprises microcontroller 601, power management and CAN communication module 602, shock sensor 608 and alarm speaker driver module 607, also comprises frame hopping remote control module 606, wireless receiving module 604, frame hopping decoder module 605, temperature sensor 609, temperature signal regulation circuit 603; Described microcontroller 601 is connected with power management and CAN communication module 602 by SPI, and described microcontroller 601 is connected with described temperature signal regulation circuit 603 by the A/D interface; Described temperature sensor 609 is connected with signal modulation circuit 603 through after the dividing potential drop, and described microcontroller 601 is connected with shock sensor 608 by the I/O mouth; Described wireless receiving module 604 is to link to each other by serial data line with described frame hopping decoder module 605; Described microcontroller 601 is connected by the I/O mouth with described frame hopping decoder module 605; Described microcontroller 601 is connected with speaker drive module 607 by the I/O pin; Shown in Fig. 6-2, described temperature signal regulation circuit 603 comprises that amplifying arithmetical unit U1 and U2 and thermistor forms.In described remote theft-preventing apparatus, the microcontroller MC68HC908GZ16 that described microcontroller 601 adopts Freescale company to produce; The power management chip MC33889 that described power management module 602 adopts Freescale company to produce; Described CAN communication module microcontroller comprises MSCAN08 controller and CAN bus transceiver; Described temperature sensor 609 adopts thermistor structure, its signal is a voltage signal, the temperature range of measuring is-30～+ 50 degree, described temperature sensor 609 measure mainly to as if railway carriage and external environment, voltage signal is delivered to the A/D mouth of MCU601 through after amplifying, the every 60ms of MCU601 gathers the primary voltage signal, through averaging after 50 collections, judge temperature by the way of tabling look-up, by the CAN bus temperature transfer that measures is gone out again; Described temperature signal regulation circuit 602 receives the signal that comes from described temperature sensor 609, behind electric resistance partial pressure, after amplifying through the operational amplifier U1 of two different amplification ratios and U2, the A/D interface conversion by microcontroller 601 becomes digital quantity to handle again; What the resistance in the described temperature signal regulation circuit 603 adopted is that resistance is the thermistor of the negative temperature coefficient of 10k under 25 ℃ of states; It is the superhet RX3400 receiver module of 106DB that described wireless receiving module 604 adopts sensitivity; Described remote control module 606 adopts HCS301-Keeloq frame hopping scrambler; Described frame hopping decoder module 605 adopts HCS512-Keeloq frame hopping demoder, and its output state is a high-low level, can directly be detected by described microcontroller; Adopting the BTS724 chip in the described alarm speaker driver module 607 is the driving core of loudspeaker.
The course of work of above-mentioned remote theft-preventing apparatus is: the duty of microcontroller MCU601 includes antitheft and non-anti-theft two states.Wherein, under anti-theft state, can detect shock sensor 608 does not in real time have and is triggered, if described shock sensor 608 is that then Shu Chu signal is a high level under normal duty, output signal is a low level in case be triggered afterwards.Described microcontroller 601, it is the signal of the described shock sensor 608 of single-chip microcomputer cycle detection, in case find that shock sensor 608 is triggered, just the I/O mouth of control loudspeaker is put height, high level signal becomes 12V after by speaker drive module 607, drive loudspeaker and outwards report to the police, the alarm in the automotive networking system outwards sends order by bus simultaneously makes the steering indicating light of car glimmer.Warning was not stopped by telepilot within 30 seconds, then stopped to report to the police, and entered anti-theft state once more.In a word, described remote theft-preventing apparatus receives the encrypted instruction information of telepilot and uses the Keeloq technique decodes, sends the operational order to central controlled lock simultaneously; Gather the information of two-way temperature sensor, and send temperature information to bus; The input information of scanning shock sensor, and send sound and light alarm.
Describe intelligent automobile body network control method of the present invention in detail below in conjunction with accompanying drawing.
The Body Control network that makes up in the intelligent automobile body network control system device of the present invention is a master network more than, each node all can take bus by bus contention and arbitration, but on function, described central controller is whole server, it monitors the failure message of whole network and storage and record network, sends various command informations simultaneously.
Intelligent automobile body network control method of the present invention may further comprise the steps: central controller controls step, the forward and backward lamp group controller of automobile controlled step, car door controller controlled step and remote theft-preventing apparatus controlled step.
The central controller controls step: the positional information of " headlamp switch judge and CAN bus command send " subroutine real-time judge combined switch of described central controller also sends command adapted thereto to bus, send firing key positional information and speed information according to given time interval timing to bus, the failure message and the storage that receive simultaneously on the bus show.Shown in Fig. 3-1, Fig. 3-3, shown in Fig. 3-3, to after the device power, master routine is started working; The single-chip microcomputer MC68HC908AZ60 of initialization micro controller unit 301; Pass through SPI interface initialization peripheral components MC33889 and MC33993 then, last initialization LCD LCDs 305 internal registers; Read FLASH, transfer the failure message sign indicating number,, then show diagnostic trouble code, if non-fault shows that then all are normal if fault is arranged.Enter the infinite loop program, interrupt calculating the speed of a motor vehicle, intermittent scanning switch interface state is judged the light state, and key and rain brush switch and LCD turn over the screen key, call subroutine module separately, and failure message CAN interrupts accepting, and stores FLASH after the judgement into.This shows, in the described central controller course of work, the switch contact scan module constantly scans the state of combined switch, by checking the change of state, send corresponding information with the action of controlling other node, show corresponding information (as left and right sides steering indicating light information) to the CAN bus by LCD, and directly Wiper motor and preceding washing pump before the control.Receive the failure message that other each node sends from the CAN bus simultaneously, failure message is stored to single-chip microcomputer, on the LCD LCDs, show corresponding contents simultaneously.
The forward and backward lamp group controller of automobile controlled step: after the forward and backward lamp group controller of described automobile receives the instruction that bus transmits; open or closure through the corresponding light of decoding judgement driving; and detect the state of light in real time; as after finding states such as broken string, overcurrent, enter guard mode automatically and send failure message on bus.Shown in Fig. 4-1, Fig. 4-2 and Fig. 4-3, comprise in the forward and backward lamp group controller of the described automobile controlled step: master routine was started working after lamp dimmer powered on before and after the automobile; Initialization MCU single-chip microcomputer MC68HC908GZ16; By SPI interface initialization peripheral components MC33889; Enter the scan round program then, scan round CAN bus accepting state; If receive instruction from bus, then at first command information is decoded, call the folding that corresponding subroutine is controlled corresponding light then; All by interrupting the response of application MCU, after meeting with a response, MCU issues failure message the failure message of all light to the CAN bus; Simultaneously, the chip for driving of each light can be according to fault type, enters protection automatically or returns to form certainly.In a word, the instruction that lamp group of received bus transmits before and after the described automobile also drives corresponding light unlatching and closed, direct driving force with each light load, cancel original relay and fuse, have the bus sending function of overcurrent, overvoltage, undercurrent, under-voltage and break alarm function and failure message simultaneously.
Car door controller controlled step: described left front door controller receives speed information and the key position information on the bus, detect the key information on the left front door simultaneously in real time, carry out corresponding action, and to bus transmission corresponding instruction, described right front door controller, left back door controller and right back door controller receive command information and the local key information on the bus, and the execution corresponding action, when above-mentioned any one car door controller breaks down, then send failure message to bus.Shown in Fig. 5-1, Fig. 5-2 and Fig. 5-3, wherein, comprise in the described front door controller controlled step: master routine was started working after the car door controller powered on; Initialization single-chip microcomputer MC68HC908GZ16; By SPI interface initialization peripheral components MC33889 and MC33993; Enter the scan round program then, the scan round program is then carried out successively according to the instruction that receives the action of central controlled lock, door and window lifter, rearview mirror, pilot lamp is controlled, and sends the failure message of car door and whether enters dormant state according to conditional decision by the CAN bus simultaneously; The keyboard instruction of car door and from the instruction of CAN bus all by interrupting applying for the corresponding of MCU, wherein 20ms regularly interrupts being used for judging the time of keyboard operation; The pinch resistant functionality of vehicle window is judged by the electric current that detects motor; Can be to the chip for driving of each motor according to fault type, enter protection automatically or return to form certainly.In a word, left front door controller is the control center of other three car doors, can control functions such as the action of the action of other three car doors and rearview mirror and electrical heating.Four car door nodes all receive instruction, information and the instruction input of gauge tap separately on the bus, finish the control to window regulator, central controlled lock, rearview mirror.
The remote theft-preventing apparatus controlled step: described remote theft-preventing apparatus receives the 315M radio-frequency information and the decoding of telepilot, send the steering order of central controlled lock then by bus, send temperature information by temperature sensor inspection vehicle internal and external temperature and to bus simultaneously, whether remote theft-preventing apparatus detects car body by shock sensor and exists unusual vibrations to judge whether safety of vehicle, if unusual then acousto-optic hint reaches antitheft purpose.Shown in Fig. 6-1, Fig. 6-2 and Fig. 6-3, described remote theft-preventing apparatus controlled step comprises: master routine was started working after remote theft-preventing apparatus powered on; Initialization single-chip microcomputer MC68HC908GZ16; By SPI interface initialization peripheral components MC33889; Enter the scan round program then, the enciphered message that scan round receives by Receiver Module, and decode, decision is carried out and is opened central controlled lock or closed central controlled lock according to decoded result; If closed central controlled lock then enters anti-theft state, the starting shock sensor if any the shock sensor response, is then reported to the police, otherwise, read temperature sensor information, and send to the CAN bus.
Finish lifter control, the control of collection control door lock and left and right sides rearview mirror respectively with the car door controller below and be controlled to be the example funerary objects course of work furtherly.
One, the car door controller is finished the course of work of lifter control.
1. at first, clearly the igniting switch connection comprises following function in system of the present invention: (1) presses lifter switch rising/decline key＜=300 milliseconds, makes lifter rise automatically/descend; (2) when automatic rising/decline, touch once more and press lifter switch rising/decline key＜=300 milliseconds, make lifter stop automatic rising/decline; (3) when automatic rising/decline, touch once more and press lifter switch rising/decline key＞=300 milliseconds, make lifter transfer manual rising/decline to; (4) press lifter switch rising/decline key＞=300 milliseconds, make lifter manually rise/descend; (5) release lifter switch rising/decline key when manual risings/decline makes lifter stop rising/decline; (6) press gauge tap mid-riser switch rising/decline button, on the CAN bus, send corresponding button and press signal; (7) discharge gauge tap mid-riser switch rising/decline button, on the CAN bus, send corresponding button and press signal.
2. the course of work after above-mentioned ignition switch being disconnected is: when receiving on the CAN bus behind " the outside locking of collection control door lock " signal, check the lifter state; If find that lifter does not also rise to the top, then make lifter rise to the top automatically, on the CAN bus, send " the outside locking of collection control door lock " signal simultaneously; If lifter rises to the top, then only on the CAN bus, send " the outside locking of collection control door lock " signal.
3. the process process when bumping, when signal and the ignition switch of " bumping " on receiving the CAN bus connected, then the lifter with all car doors dropped to the end; At this moment,, power on once more, otherwise can not control lifter unless close ignition switch.
Two, the car door controller is finished the course of work of collection control door lock control.
When (1) on receiving the CAN bus, " bumping " connection of signal and ignition switch, the collection control door lock is unblanked; Unless re-power, dead lock can not cut out (state is opened in maintenance); (2) receive the speed of a motor vehicle＞15km/h on the CAN bus, make the door lock locking; On bus, send this message simultaneously; (3) receive " unblanking " signal that collects the control door lock switch, make door lock carry out unlocking action, on the CAN bus, send " unblanking in collection control door lock outside " simultaneously and order; (4) receive " locking " signal that collects the control door lock switch, the state of detecting gate contact-making switch; If this door is closed, then on the CAN bus, send " inquiry door state " signal; If its excess-three fan door is all closed, then make door lock carry out the corresponding interlocking action, on the CAN bus, send " the outside locking of collection control door lock " order simultaneously; (5) receive " inquiry door state " signal on the CAN bus, the state of detecting gate contact-making switch sends to this state on the CAN bus; (6) receive " unblanking " signal that collects button in the control door lock car, make door lock carry out unlocking action, on the CAN bus, send " collecting control door lock inside unblanks " order simultaneously; (7) receive " locking " signal that collects button in the control door lock car, the state of detecting gate contact-making switch; If this door is closed, then on the CAN bus, send " inquiry door state " signal; If four panel door is all closed, then make door lock carry out the corresponding interlocking action, on the CAN bus, send " the inner locking of collection control door lock " order simultaneously.
Three, the car door controller is finished the course of work of left and right sides rearview mirror control.
(1) rearview mirror is controlled at when ignition switch is connected and works; (2) carry out the rearview mirror motor according to the rearview mirror operation signal and correspondingly move, make the rearview mirror motor stop action after the rearview mirror operation signal stops, simultaneously, on the CAN bus, send corresponding signal.
Intelligent automobile body network control system device of the present invention designs at car, by left front door, right front door, left back door and four CAN network systems that main node is formed of right back door, wherein, cancellation MC33993 contact chip monitoring keeps the I/O that uses MC68HC908GZ16 and has expanded the Control Node of five tunnel contacts monitoring input as right front door; MC33993 contact chip monitoring in cancellation rear-view mirror control module 43 and the module 3 keeps the I/O that uses MC68HC908GZ16 and has expanded the control system of five tunnel contacts monitoring input as left back car door and right back car door.These four nodes receive the vehicle drive information of being sent by central controller and subcontrol by the CAN network, such as the firing key position, information such as car speed and burglar alarm information or the like, simultaneously to each unit information (comprising failure message) of the relevant car door node of Web publishing or the like, the mutual exchange of control information co-ordination of CAN network between four car doors.
The major function of body of a motor car network control system of the present invention has:
1. caution shows
1) drives not fasten the safety belt the flicker of securing band emergency warning lamp, hummer buzzing;
2) behind the engine ignition, if there is car door not close or close bad, then Dui Ying instrument emergency warning lamp is lighted;
3) the liquid crystal information display screen can show the inside and outside actual temperature of car, date and time, and has current fault alarm Chinese-character display function and diagnostic trouble code is turned over the screen Presentation Function.
2. Based Intelligent Control
1) each power windows all has the anti-pinch reverse function, promptly is raised to the about 150mm that descends that can reverse when running into barrier midway at glass, preventing to crush the user, and when glass moves to top dead centre, can fasten glass again;
2) as engine kill, car door locking, then automatic closing vehicle lamp and vehicle window;
3) when the speed of a motor vehicle during greater than 10km/h, the automatic blocking central controlled lock;
4) when key became OFF by ON, central controlled lock was opened automatically.
3. distant control function
1) radio frequency transmit and receive adopts the 315Mhz signal, carries out Code And Decode by the Keeloq technology, and each transmission and receiving code generate at random, have strengthened security;
2) central controller receives telecommand, and sends to bus
4. Intelligent Measurement and diagnosis
1) has the overvoltage, overcurrent of auto electric equipment, under-voltage, undercurrent, the automatic protection functions of anti-circuit reversal connection and the auto restore facility after wrong the elimination;
2) have automatic detection and network diagnostic function;
3) has the diagnostic trouble code memory function.
5. room light
1) become the control of light formula body light: the form with short decay is turned off the light;
2) all backlights (as switch, instrument etc.) to bridge carry out the light modulation driving.
Communication interface and characteristics have in the body of a motor car network control system of the present invention:
1. adopt twisted-pair feeder to transmit data;
2. the speed of transmission data is 125kb/s;
3. the time interval of each control module transmission information is 20ms;
4. priority order is:
1) central control unit;
2) headlight group control module;
3) back light group control module;
4) left front door control unit;
5) right front door control unit;
6) left back door control unit;
7) right back door control unit;
8) remote-control anti-theft control module.
Although in conjunction with the accompanying drawings the preferred embodiments of the present invention are described above; but the present invention is not limited to above-mentioned embodiment; above-mentioned embodiment only is schematic; rather than it is restrictive; those of ordinary skill in the art is under the enlightenment of this reality invention; not breaking away under the scope situation that aim of the present invention and claim protect, can also make a lot of forms, these all belong within the protection of the present invention.
Claims (10)
1. an intelligent automobile body network control system device comprises central controller and car door controller, it is characterized in that, also comprises auto lamp group controller and remote theft-preventing apparatus;
Described central controller comprises power management and CAN communication module, switch contact scan module, vehicle speed signal modulate circuit, motor drive module and the LCD display module that is connected with the MCU unit respectively; Described motor drive module comprises the two-way motor-drive circuit that links to each other with MCU respectively, and wherein one the tunnel connects washing pump, and another road is connected with rain shaving electrical machine with the PWM mode of speed regulation; Described vehicle speed signal modulate circuit is made of operational amplifier LM224, trigger HC14 and low speed optocoupler; Described power management and CAN communication module are by 3 line SPI and MCU interface on it; Described switch contact scan module is connected with MCU by the SPI interface, the LCD display module directly links to each other with MCU by 8 parallel port lines, two-way motor-drive circuit on the motor drive module is connected with MCU by a triode respectively, and the vehicle speed signal modulate circuit is connected to MCU through trigger HC14;
Described auto lamp group controller comprises power management and CAN communication module, MCU module and the power driver module that connects successively; Pass through the communication of SPI mouth between described power management and CAN communication module and the described MCU module, communication controler in the described MCU module and the CAN transceiver interface in the described power management module, described MCU links to each other by the I/O mouth with described power driver module;
Described car door controller comprises micro controller module, power management and CAN communication module, input signal conditioning module and comprises the output driver module that is made of glass lifting motor control chip, centrally controrlled locking system control chip and rear-view mirror control module that described micro controller module links to each other with described output driver module by the I/O interface respectively; Described micro controller module is connected with described input signal conditioning module with described power management and CAN communication module respectively by the SPI mode, and described micro controller module is connected with the output driver module by the I/O interface;
Described remote theft-preventing apparatus comprises microcontroller, power management and CAN communication module, shock sensor and alarm speaker driver module, also comprises frame hopping remote control module, wireless receiving module, frame hopping decoder module, temperature sensor, temperature signal regulation circuit; Described microcontroller is connected with power management and CAN communication module by SPI, and described microcontroller is connected with described temperature signal regulation circuit by the A/D interface; Described temperature sensor is connected with signal modulation circuit through after the dividing potential drop, and described microcontroller is connected with shock sensor by the I/O mouth; Described wireless receiving module is to link to each other by serial data line with described frame hopping decoder module; Described microcontroller is connected by the I/O mouth with described frame hopping decoder module; Described microcontroller is connected with the speaker drive module by the I/O pin; Described temperature signal regulation circuit comprises that amplifying arithmetical unit U1 and U2 and thermistor forms;
Above-mentioned each controller constitutes a localized network by the CAN bus, and its traffic rate is 125Kbps, and the application layer message coding adopts the coding rule of SAE J1939.
2. according to the described intelligent automobile body network control system of claim 1 device, wherein, in described central controller, described MCU adopts the MC68HC908AZ60 single chip computer architecture; Described power management and CAN communication module adopt MC33889 structure chip, are used for providing+5V power supply and the fault-tolerant CAN transceiver of low speed for MCU; Described switch contact scan module adopts MC33993 structure chip, and described switch contact scan module is connected with 22 way switch, in order to detect 22 way switch input signals; Motor-drive circuit in the described central controller adopts the BTS6143D chip structure; Described LCD display module adopts the OCM4X8C LCD MODULE.
3. according to the described intelligent automobile body network control system of claim 1 device, wherein, described auto lamp controller comprises automobile headlamp group controller and automobile back light group controller; In described auto lamp group controller, it is 8 8-digit microcontrollers of MC68HC908GZ16 that described ECU module adopts model, and described ECU comprises timer, general purpose timer, A/D converter, communication controler and the SPI expansion communication module of comparing function; BTS724G chip and BTS6143D chip that described power driver module adopts INFINEON company to manufacture; Described BTS724G is used for doing the switch control and the fault detect chip of left and right sides steering indicating light (front and back), fog lamp (front and back), side-marker lamp (front and back), brake lamp (back), backup lamp (back); Described BTS6143D is used as left high beam (preceding), right high beam (preceding), the switch of light modulation (preceding), right dipped headlights (preceding) is controlled and the fault detect chip in the vicinity.
4. according to the described intelligent automobile body network control system of claim 1 device, wherein, described car door controller comprises left front door controller, right front door controller, left back door controller and right back door controller; In described car door controller, the microcontroller MC68HC908GZ16 chip that described micro controller module adopts Freescale company to produce; Described power management and CAN communication module adopt the MC33889 chip, for the MCU micro controller unit provides+5V power supply and the fault-tolerant CAN transceiver of low speed; Described input signal conditioning module adopts the MC33993 chip, in order to detect 22 way switch input signals and firing key positional information; Described glass lifting motor control chip adopts the MC33486H bridge driving power chip of Freescale company; Described centrally controrlled locking system control chip adopts the BTS7710 chip of Infineon; Described rear-view mirror control module comprises that rearview mirror is adjusted control chip, rearview mirror folds control chip and rearview mirror defrosting control chip; Described rearview mirror is adjusted control chip and is adopted the TLE6208-3G chip, and the folding control chip of described rearview mirror adopts the MC33486 chip, and described rearview mirror defrosting control chip adopts the BTS6143 chip.
5. according to the described intelligent automobile body network control system of claim 1 device, wherein, in described remote theft-preventing apparatus, described microcontroller adopts the microcontroller MC68HC908GZ16 of Freescale company production; The power management chip MC33889 that described power management module adopts Freescale company to produce; Described CAN communication module microcontroller comprises MSCAN08 controller and CAN bus transceiver; Described temperature signal regulation circuit receives the signal that comes from described temperature sensor, and behind electric resistance partial pressure, after amplifying through the operational amplifier U1 of two different amplification ratios and U2, the A/D interface conversion by microcontroller becomes digital quantity to handle again; What the resistance in the described temperature signal regulation circuit adopted is that resistance is the thermistor of the negative temperature coefficient of 10k under 25 ℃ of states; It is the superhet RX3400 receiver module of 106DB that described wireless receiving module adopts sensitivity; Described remote control module adopts HCS301-Keeloq frame hopping scrambler; Described frame hopping decoder module adopts HCS512-Keeloq frame hopping demoder, and its output state is a high-low level, can directly be detected by described microcontroller; Adopting the BTS724 chip in the described alarm speaker driver module is the driving core of loudspeaker.
6. adopt the method for intelligent automobile body network control system as claimed in claim 1, it is characterized in that may further comprise the steps:
The central controller controls step: the positional information of " headlamp switch judge and CAN bus command send " subroutine real-time judge combined switch of described central controller also sends command adapted thereto to bus, send firing key positional information and speed information according to given time interval timing to bus, the failure message and the storage that receive simultaneously on the bus show;
The forward and backward lamp group controller of automobile controlled step: after the forward and backward lamp group controller of described automobile receives the instruction that bus transmits, open or closure through the corresponding light of decoding judgement driving, and detect the state of light in real time, as after finding states such as broken string, overcurrent, enter guard mode automatically and send failure message on bus;
Car door controller controlled step: described left front door controller receives speed information and the key position information on the bus, detect the key information on the left front door simultaneously in real time, carry out corresponding action, and to bus transmission corresponding instruction, described right front door controller, left back door controller and right back door controller receive command information and the local key information on the bus, and the execution corresponding action, when above-mentioned any one car door controller breaks down, then send failure message to bus;
The remote theft-preventing apparatus controlled step: described remote theft-preventing apparatus receives the 315M radio-frequency information and the decoding of telepilot, send the steering order of central controlled lock then by bus, send temperature information by temperature sensor inspection vehicle internal and external temperature and to bus simultaneously, whether remote theft-preventing apparatus detects car body by shock sensor and exists unusual vibrations to judge whether safety of vehicle, if unusual then acousto-optic hint reaches antitheft purpose.
7. the method for intelligent automobile body network control system according to claim 6, wherein, the controlled step of described central controller further comprises: master routine is started working after giving device power; The single-chip microcomputer MC68HC908AZ60 of initialization central controller unit; Pass through SPI interface initialization peripheral components MC33889 and MC33993 then, last initialization LCD display internal register; Read FLASH, transfer the failure message sign indicating number,, then show diagnostic trouble code, if non-fault shows that then all are normal if fault is arranged; Enter the infinite loop program, interrupt calculating the speed of a motor vehicle, intermittent scanning switch interface state judges that light state, key and rain brush switch and LCD turn over the screen key, calls subroutine module separately, and failure message CAN interrupts accepting, and stores FLASH after the judgement into.
8. the method for intelligent automobile body network control system according to claim 6 wherein, further comprises in the forward and backward lamp group controller of the described automobile controlled step: master routine was started working after lamp dimmer powered on before and after the automobile; Initialization MCU single-chip microcomputer MC68HC908GZ16; By SPI interface initialization peripheral components MC33889; Enter the scan round program then, scan round CAN bus accepting state; If receive instruction from bus, then at first command information is decoded, call the folding that corresponding subroutine is controlled corresponding light then; All by interrupting the response of application MCU, after meeting with a response, MCU issues failure message the failure message of all light to the CAN bus; Simultaneously, the chip for driving of each light can be according to fault type, enters protection automatically or returns to form certainly.
9. the method for intelligent automobile body network control system according to claim 6 wherein, further comprises in the described car door controller controlled step: master routine was started working after the car door controller powered on; Initialization single-chip microcomputer MC68HC908GZ16; By SPI interface initialization peripheral components MC33889 and MC33993; Enter the scan round program then, the scan round program is then carried out successively according to the instruction that receives the action of central controlled lock, door and window lifter, rearview mirror, pilot lamp is controlled, and sends the failure message of car door and whether enters dormant state according to conditional decision by the CAN bus simultaneously; The keyboard instruction of car door and from the instruction of CAN bus all by interrupting applying for the corresponding of MCU, wherein 20ms regularly interrupts being used for judging the time of keyboard operation; The pinch resistant functionality of vehicle window is judged by the electric current that detects motor; Can be to the chip for driving of each motor according to fault type, enter protection automatically or return to form certainly.
10. the method for intelligent automobile body network control system according to claim 6 wherein, further comprises in the described remote theft-preventing apparatus controlled step: master routine was started working after remote theft-preventing apparatus powered on; Initialization single-chip microcomputer MC68HC908GZ16; By SPI interface initialization peripheral components MC33889; Enter the scan round program then, the enciphered message that scan round receives by Receiver Module, and decode, decision is carried out and is opened central controlled lock or closed central controlled lock according to decoded result; If closed central controlled lock then enters anti-theft state, the starting shock sensor if any the shock sensor response, is then reported to the police, otherwise, read temperature sensor information, and send to the CAN bus.
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| CNB2005101222999A CN100449436C (en) | 2005-12-12 | 2005-12-12 | Intelligent automobile body network control system device and control method thereof |
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| CN110049115A (en) * | 2019-04-03 | 2019-07-23 | 广州小鹏汽车科技有限公司 | A kind of means of communication and vehicular lamp system applied to vehicular lamp system |
| CN110308732A (en) * | 2019-07-25 | 2019-10-08 | 北京智行者科技有限公司 | The fault detection method and auto-pilot controller of auto-pilot controller |
| CN112061045A (en) * | 2020-08-27 | 2020-12-11 | 浙江联控技术有限公司 | Switch control device and method and automobile |
| CN112776680A (en) * | 2020-12-28 | 2021-05-11 | 江苏鼎控电子科技有限公司 | Seat control system based on mobile device |
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| CN100449436C (en) | 2009-01-07 |
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