CN201343000Y - Electronic switch integrated controller of automobile electrical system - Google Patents

Abstract

The utility model relates to an electric switch integrated controller of an automobile electrical system, which aims at solving the problems of ensuring that the entire automobile detection and the maintenance of the automobile are more convenient, and the operation and the control are simpler. The electric switch integrated controller mainly comprises automotive electronic switches and corresponding loads which are respectively controlled and connected with each switch; and the electronic switches are integrally controlled and processed by corresponding I/O modules and communication interfaces which take an MPC555 main control chip as a core and are arranged on the MPC555 main control chip, a control signal acquired by a sensor, the MPC555 main control chip and a real-time operation system RTOS arranged on the MPC555 main control chip. The utility model has the advantages of integrating various control switches and detection functions of automobile electrical appliances into a whole body, changing electric switches into controllable electronic switches, achieving the detection and the control of all the functions by a singlechip computer, having low cost, high integration degree and strong operability, being simple, easy and directviewing, overcoming the difficulty and inconvenience in maintenance and detection, and improving and completing the automobile in electronization and automation.

Description

Automobile electric appliance system electronic switch Centralized Controller

Technical field:

The utility model relates to the technical field of automobile electric appliance system, relates in particular to a kind of automobile electric appliance system electronic switch Centralized Controller.

Background technology:

Along with the fast development of auto-industry, automobile becomes increasingly complex in the requirement of control, communication and network facet, and the various control setups on the automobile are integrated, automation has been trend of the times.Make car load detect with easy to maintenanceization, easy to operate be numerous clients and the maintainer is long-term expects.

Summary of the invention:

The utility model makes the vehicle complete vehicle detection more convenient with maintenance in order to solve, technical matterss such as operation control is simpler, and provide a kind of automobile electric appliance system electronic switch Centralized Controller, it mainly comprises the electronic control switch on the automobile, with with the respective load of each switch control linkage, by being core with the MPC555 main control chip and on the MPC555 chip, being furnished with corresponding I/O module with each load bonded assembly and communication interface, by the sensor acquisition control signal, real time operating system (RTOS) RTOS by being equipped with on MPC555 main control chip and its carries out centralized control and processing to each electronic control switch again; Realize load control by power output module; By ignition control module and ignition device control linkage; Carry out overheating protection detection, the detection of lack/opening circuit by security protection module and each power output module control linkage, pass through the CAN bus and the car load display apparatus electric signal control linkage of MPC555 microprocessor again; Described real time operating system (RTOS) RTOS receives MPC555 hardware platform state and information by the BDM interface; Set up controlling models; And be connected with compiler controlling models or C programmer are generated MPC555 machine source code; By the BDM interface source code is sent to the MPC555 hardware platform; Main control chip MPC555 controller by system is responsible for detecting, judging the state of each electronics package, and sends corresponding control command.

Characteristics of the present utility model and beneficial effect: the various master cocies, the measuring ability that integrate car electrics, a large amount of mechanical switch and relays that use on the automobile are become the controollable electronic switch, control and drive load with electronic switch signal, realize Detection ﹠ Controling with the computer micro controller system to all functions, it is low, simple that utility model has a cost, integrated degree height, advantage such as directly perceived, workable can satisfy client and maintenance personnel's basic need to greatest extent.Many difficulties and the inconvenience of perplexing maintenance, testing staff have for a long time not only been solved, also the integrated of vehicle electronics and automation aspect have been played improvement and improved effect, along with rapid development of automobile industry, will play a significant role aspect vehicle electronicsization, the automation.

Description of drawings:

Fig. 1 structural representation of the present utility model

Fig. 2 circuit theory scheme drawing of the present utility model

Fig. 3 is based on the ECU core texture scheme drawing of MPC555

Fig. 4 is a CAN interface circuit schematic diagram

Fig. 5 is the power output module schematic circuit diagram

Fig. 6 is the alarm module scheme drawing

The specific embodiment:

Referring to Fig. 1-Fig. 2, automobile electric appliance system electronic switch Centralized Controller, it mainly comprises the electronic control switch k1 on the automobile, k2, ...., kn (as: source switch, pole changer, dimmer control, the distance light switch, the profile switch, the adverse-weather lamp switch, the fog tail lamp switch, reversing switch, BK Brake Switch, preceding wash switch, back wash switch, preceding wiper switch, back wiper switch, safety switch), with with respective load (the 1......n) (as: power supply of each switch control linkage, the left steering lamp, the right steering lamp, passing light, country beam, clearance light, adverse-weather lamp, fog tail lamp, backing-up lamp, stoplight stop lamp, preceding washing lamp, back washing lamp, preceding windscreen wiper lamp, back wiper switch, safety switch and heater unit, preceding wiper, back rain strip device and A/C), by being core with the MPC555 main control chip and on the MPC555 chip, being furnished with corresponding I/O module with each load bonded assembly and communication interface, by sensor 1, ..., sensor n (as: Light indicator, rain sensor etc.) acquisition controlling signal, real time operating system (RTOS) RTOS by being equipped with on MPC555 main control chip and its carries out centralized control and processing to each electronic control switch again; By the output of the power in the power output module 1, power output 2 ... power output n, realize the control to each load (1......n); By ignition control module and ignition lock control linkage; Security protection module is by MPC555 microprocessor and each power output module control linkage, and carries out that overheating protection detects, the detection of lack/opening circuit, again by with MPC555 microprocessor CAN bus bonded assembly car load display apparatus, the state of the individual load of demonstration.Be contained in the real time operating system (RTOS) RTOS on the MPC555 microprocessor, receive MPC555 hardware platform state and information by the BDM interface; Set up controlling models; And be connected with compiler controlling models or C programmer are generated MPC555 machine source code; By the BDM interface source code is sent to the MPC555 hardware platform; Main control chip MPC555 controller by system is responsible for detecting, judging the state of each electronics package, and sends corresponding control command.

Ignition Control and security protection module workflow; after MPC 555 control chips are received power supply input signal; at the igniting before and after various contingent situation as whether lighting a fire; under the situation of having lighted a fire; to whether short circuit occurring, whether occur opening circuit etc. situation is discerned and is analyzed; send instruction by MPC 555; whether decision starts normal safety guard-safeguard/outage safety guard-safeguard and start warning device shows accordingly, reports to the police, thereby reaches detection and safety protection function to car load.

The MPC555 microcontroller is the representative products of Motorola PowerPC 555 series, and it has adopted the technology such as chip structure, AMD flash memories of IBM microcontroller.Be to aim at the designed computer chips of high-end embedded control system such as vehicle electronics, aerospace, intelligence system.This product can be worked under high-speed mobile and rigorous environment (operating temperature :-40～125 ℃), function admirable, and have alerting ability and reliability highly.The utility model is exactly at electronic control switch signals all on the automobile, utilizes the power of this chip, to sensor and control signal centralized control and processing.The MPC555 controller is furnished with types of applications I/O module and communication interface, and a cover real time operating system (RTOS) (RTOS) is housed.Under the management of operating system, by BDM interface navigation MPC555 hardware platform state and information; Set up controlling models; Be connected controlling models or C programmer generation MPC555 machine source code with compiler; By the BDM interface source code is sent to the MPC555 hardware platform; MPC555 is the core of controller, and it is responsible for detecting, judging the state of each electronics package, and sends corresponding control command.

For example: rain brush control, at first transmit the signal that rainfall changes by rain sensor, controller is according to the data of sensor and Wiper motor is carried out classification, Classification Management, sending corresponding instruction again controls, thereby reach Based Intelligent Control to rain brush, during also have processing to various bursty state.

Referring to Fig. 3, the ECU core texture of MPC555, its main functional modules has:

* the reduced instruction set computer RCPU of dominant frequency 40MHz;

* level Four Memory Controller;

* U-Bus system interface unit (USIU);

* instruction and data memory protection unit flexibly;

*448KB?Flash?EEPROM；

*26KB?SRAM；

* dual-time processing unit (TPU3);

* 18 channel module I/O systems (MIOS1);

* deque's analog-to-digital conversion module (QADC);

* two CAN2.0B controller modules (TouCANs);

* formation serial multi-channel module (QSMCM).

Signal acquisition module provides acquired signal by each switch and sensor in the utility model, and realizes centralized control by MPC555.

Driver module drives each load in the utility model.Because MPC 555 control chips have the advantage that is easy to realize input and output, so it has the extremely strong driving and the ability of control load, and for the input and output of regular tap amount, the 18 channel module I/O MIOS1 of system are meet requirements substantially; When control needs more I/O for complex environment, because minimum system is adopted in the ECU design, need not extended memory etc., its 24 bit address bus and 32 bit data bus can be used as the free time general purpose I/O and use.

Communication module is realized the communication of MPC 555 controllers and car load display apparatus by the CAN bus.

Referring to Fig. 4, the CAN interface circuit, MPC 555 is inner integrated two-way CAN 2.0B controller module only need increase a transceiver and just can finish high-speed communication when ECU designs.The utility model has adopted the PCA82C250 transceiver of PHILIPS Co., and its transfer rate is up to 1Mbps.Be used for realizing being connected with the CAN bus.Vcc among Fig. 4 represents positive source, Vss is a ground terminal, C-H is that input high level is effective, C-L is that low level is effective, CANL1 is expressed as the port that connects of system and CAN bus, and R is expressed as impedance match, and C is expressed as the capacitive reactance coupling, CNTX1 is the output signal that system sends to the CAN bus, and CNRX1 is the incoming signal that system receives the CAN bus.

Referring to Fig. 5, each power output module, by the overheating protection in the security protection module, short-circuit protection and open circuit protection overheating protection detection, the detection of lack/opening circuit are carried out in each load, handle abnormal condition by alarm module, realize differentiation and processing control, output and the various error staties of each load (1......n); Its workflow is: after power output module is received control signal, be responsible for detecting, judging the state of each (load) electronics package such as country beam, passing light, adverse-weather lamp, backing-up lamp and other primary light by main control chip MPC555 controller, whether short circuit or open circuit and send corresponding control command shows, reports to the police; After carrying out power gain under the normal situation of circuit, judge that each electronics package is whether overheated and send corresponding control command, show, report to the police; Under normal situation, implement load.

The reflection of each power output module be control to all loads; the differentiation and the result of output and various error staties; have directly perceived; advantage such as succinct; that low-power load output is adopted is Philip power amplifier elements T DA2030A; high-performance output load is then agree high power valve 2SC series of elements with three and is reached real-time control to load; simultaneously; it also has short circuit; open circuit; overheated; measuring abilities such as overload protection; by controller various situations are discerned; after the analysis; export to annunciator by power model and produce warning, its can control and handle various emergency case by actv..

Referring to Fig. 6, alarm module, by MPC 555 by each power output module to annunciator send various emergency monitor signals (or door 1 ... or door n), produce alerting signal by annunciator, reach actv. control and handle various emergency case.

Claims (2)

1, automobile electric appliance system electronic switch Centralized Controller, it mainly comprises the electronic control switch on the automobile, with with the respective load of each switch control linkage, it is characterized in that: by being core with the MPC555 main control chip and on the MPC555 chip, being furnished with corresponding I/O module with each load bonded assembly and communication interface, by the sensor acquisition control signal, real time operating system (RTOS) RTOS by being equipped with on MPC555 main control chip and its carries out centralized control and processing to each electronic control switch again; Power output module and load control linkage; Ignition control module and ignition device control linkage; Security protection module and each power output module control linkage, CAN bus and the car load display apparatus electric signal control linkage by the MPC555 microprocessor again.

2, automobile electric appliance system electronic switch Centralized Controller according to claim 1 is characterized in that: described electronic control switch comprises pole changer, dimmer control, distance light switch, profile switch, adverse-weather lamp switch, fog tail lamp switch, reversing switch, BK Brake Switch, preceding wash switch, back wash switch, preceding wiper switch, back wiper switch, safety switch and other switches commonly used.

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