CN202448893U - Automobile body controller of dual-core MCU (Microprogrammed Control Unit) - Google Patents
Automobile body controller of dual-core MCU (Microprogrammed Control Unit) Download PDFInfo
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- CN202448893U CN202448893U CN201120569308XU CN201120569308U CN202448893U CN 202448893 U CN202448893 U CN 202448893U CN 201120569308X U CN201120569308X U CN 201120569308XU CN 201120569308 U CN201120569308 U CN 201120569308U CN 202448893 U CN202448893 U CN 202448893U
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Abstract
The utility model discloses an automobile body controller of a dual-core MCU (Microprogrammed Control Unit). The automobile body controller comprises a main control MCU unit, an auxiliary control MCU unit, a receiving unit and an input signal processing unit, wherein the auxiliary control MCU unit is in communication connection with the main control MCU unit; the receiving unit is connected with the auxiliary control MCU unit electrically; and the input signal processing unit is connected with the main control MCU unit electrically. According to the automobile body controller, the power consumption of the automobile body controller is reduced effectively by adopting the main control MCU unit and the auxiliary control MCU unit to work cooperatively and by adopting a dormant strategy.
Description
Technical field
The utility model relates to technical field of automotive electronics, refers in particular to the car body controller of a kind of double-core MCU.
Background technology
At present the function of car body controller is integrated gradually, and the function that contains is more and more, develops into a gateway of Full Vehicle System gradually, through CAN, LIN and other communication modes, is connected with the various ECU ECU of vehicle and has a diagnosis function.And have huge functions like this, and the increase of power device certainly will make the power consumption of micro controller system improve greatly, makes an important parameter of car body controller---and the quiescent dissipation of veneer is standard-required head and shoulders above.Most car body controller all adopts a MCU to come work on the market, and the micro controller system power consumption adds the drain current of other power devices, and the quiescent dissipation that causes whole car body controller is greater than 5mA.
To existing issue, most of solution is to carry out time set with the house dog program, wakes host scm up once at a distance from a period of time; Though can reduce power consumption like this, micro controller system resets frequently, the crystal oscillator intermittent use; Software program runs easily and flies, and safety is not enough with stability, and is applied on the automotive grade product; Because it is very high that parts require, this kind mode has potential safety hazard.
The day for announcing is that the patent that August 17, notification number in 2011 are CN201932096U has proposed a kind of car body controller, comprises MCU, and said MCU first input end connects the mouth of the Receiver Module that is used to receive outside vehicle body remote signal; The utility model also comprise the TMPS sensor that is placed in the tire place and with the MCU first mouth bonded assembly warning device; Said TMPS sensor receives tire information and transmits to Receiver Module, and Receiver Module is imported MCU with signal, and MCU sends signal to warning device; Though this utility model unites two into one BCM and TMPS; Reduce cost of installation, but still only use single MCU, power consumption is bigger.
The utility model content
Adopt monokaryon MCU thereby the excessive problem of quiescent dissipation mostly in order to solve existing car body controller; The utility model provides the car body controller of a kind of double-core MCU; Take double-core MCU to control respectively; Adjustment main control MCU unit and receiving element get into dormant state in good time, can significantly reduce quiescent dissipation.
The technical scheme that the utility model adopted is: the car body controller of a kind of double-core MCU; Comprise main control MCU unit, auxilliary control MCU unit, receiving element and incoming signal processing unit; Described auxilliary control MCU unit is connected with the main control MCU unit communications; Described receiving element is electrically connected with auxilliary control MCU unit, and described incoming signal processing unit is electrically connected with the main control MCU unit.The utility model adopts two MCU to carry out control and treatment, adjusts main control MCU unit and receiving element in good time and gets into dormant state, thereby effectively reduce quiescent dissipation.Can select during the MCU type selecting of main control MCU unit that the space is big, the suitable singlechip chip of pin configuration according to demand, will select singlechip chip low in energy consumption, that pin is minimum during the MCU type selecting of auxilliary control MCU unit.If need the vehicle body central controller of coupling remote-control key, can also be placed on the function that remote control receives on the auxilliary control MCU unit.
As preferably, described auxilliary control MCU unit is connected through the RS485 serial communication with the main control MCU unit.Auxilliary control MCU can adopt based on the RS485 serial communication of Modbus communication protocol with the main control MCU unit unit and realize that communication is connected.
As preferably, described auxilliary control MCU unit is connected through wireless telecommunications with the main control MCU unit.Auxilliary control MCU unit can adopt wireless telecommunications to realize that communication is connected with the main control MCU unit.
As preferably, the car body controller of described double-core MCU also comprises the TMMO communication unit, and described IMMO communication unit is electrically connected with auxilliary control MCU unit.
As preferably, described main control MCU unit is provided with high-speed CAN communication interface and low speed CAN communication interface.The main control MCU unit is through EMS (the Engine Manage System of high-speed CAN communication and automobile; Engine management system), SRS (Supplemental Restraint System; Control system of safety air bag), TCU (Transmission Control Unit; Transmission control unit), ABS (Anti-locked Braking System; Anti-lock braking system), ESP a plurality of ECU such as (Electronic Stability Program, electric stabilizing systems) carry out the communication connection; The main control MCU unit also can carry out communication with combination instrument, vehicle entertainment system, air-conditioner control system, the Reverse Sensor of automobile through low speed CAN communication and be connected, and diagnostic equipment carries out function Configuration Online and diagnosis through CAN to car body controller.
As preferably, described main control MCU unit is provided with the LIN communication interface.The LIN communication provides additional function for existing automotive networking CAN bus.
The beneficial effect of the utility model is: adopt main control MCU and auxilliary control MCU collaborative work, effectively reduced the power consumption of car body controller.
Description of drawings
Fig. 1 is a kind of structured flowchart of the utility model.
Among the figure, 1-main control MCU unit, the auxilliary control of 2-MCU unit, 3-receiving element, 4-incoming signal processing unit, 5-IMMO communication unit, 6-vehicle-mounted ECU.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is done further to specify.
Embodiment 1
As shown in Figure 1; The car body controller of a kind of double-core MCU; Comprise main control MCU unit 1, auxilliary control MCU unit 2, receiving element 3, incoming signal processing unit 4 and IMMO communication unit 5; Auxilliary control MCU unit 2 is connected through the RS485 serial communication with main control MCU unit 1, and incoming signal processing unit 4 is electrically connected with main control MCU unit 1, and receiving element 3, IMMO communication unit 5 are electrically connected with auxilliary control MCU unit 2 respectively.
Big, the suitable singlechip chip of pin configuration in MCU type selecting selection space of main control MCU unit 1, the MCU of auxilliary control MCU unit selects singlechip chip low in energy consumption, that pin is minimum.Receiving element 3 receives the remote-control key radiofrequency signal and sends main control MCU unit 1 to; Signal processing unit 4 receives outside level signal and passes to main control MCU unit 1; IMMO communication unit 5 carries out low frequency communication with remote-control key and is connected.
Main control MCU unit 1 is provided with high-speed CAN communication interface, low speed CAN communication interface and LIN communication interface.Main control MCU unit 1 is through EMS (the Engine Manage System of high-speed CAN communication interface and automobile; Engine management system), SRS (Supplemental Restraint System; Control system of safety air bag), TCU (Transmission Control Unit; Transmission control unit), ABS (Anti-locked Braking System; Anti-lock braking system), ESP multiple vehicle-mounted ECU 6 such as (Electronic Stability Program, electric stabilizing systems) is carried out the communication connection.Car body controller realizes controllable function and sends or transmit the control signal of needs according to the requirement of each controller through the signal that receives each controller, receives to carry out ignition key from the GES of ABS and ESP and validation signal thereof and close automatic unlocking.Sudden stop hazard lamp flashing lamp function receives the function that realizes automatic unlocking and hazard lamp flicker from the collision alarm of SRS; Reception is carried out crypto-operation from the antitheft authentication signal of EMS; Remove functions such as antitheft then; Gather and send high-power etc. status signal such as key shape attitude signal, windscreen wiper status signal, passing light, country beam, fog lamp, CAN shares.Main control MCU unit 1 is through the combination instrument of low speed CAN communication interface and automobile.Vehicle entertainment system, air-conditioner control system, Reverse Sensor carry out communication and connect, and diagnostic equipment carries out function Configuration Online and diagnosis through CAN to car body controller.The LIN communication provides additional function for existing automotive networking CAN bus.
In the real work, the main control MCU unit 1 that power consumption is bigger in the utility model adopts the intermittent use pattern to reduce power consumption with receiving element 3.
Role in car body controller is important in main control MCU unit 1, and function is maximum, and power consumption is very big, and host scm still needs full speed running after system gets into anti-theft state, so the power consumption value of being above standard often.Auxilliary control MCU realizes serial communication with main control MCU unit 1 in unit 2 in the utility model; After system's entering is set up defences, 1 dormancy of main control MCU unit, auxilliary control MCU unit 2 full speed operations; If have remote controller signal to get into to separate anti-state, auxilliary control MCU unit 2 wakes main control MCU unit 1 up through waking port up; Also can trigger when the outer triggering signal that other signal processing unit 4 receives has level translation and wake main control MCU unit 1 up.Under anti-theft state, main control MCU unit 1 does not almost have power consumption like this, and the power consumption of auxilliary control MCU unit 2 full speed runnings is very low, thereby the power consumption of whole car body controller is reduced to below the standard-required.
Because the remote controller reception that received power is big is good, so sometimes in order to reach reception preferably, the quiescent dissipation of receiving element 3 tends to up to more than the 5mA.In order to realize whole car body controller in 5mA, the receiving element 3 of the utility model is taked the strategy of 1/5th time service, 4/5ths time dormancy.Thus, receiving element 3 links to each other with auxilliary control MCU unit 2, is waken up by the auxilliary MCU unit 2 of controlling when transmitting, thereby can accurately receive each transmitting, and power consumption then is reduced to original 1/5th.
Auxilliary control MCU unit 2 among the embodiment 2 and main control MCU unit 1 are connected through wireless telecommunications, all the other with embodiment 1 in identical.
Above embodiment is merely the technological thought of explanation the utility model; Can not limit the protection domain of the utility model with this; Every technological thought that proposes according to the utility model, any change of on the technical scheme basis, being done all falls within the protection domain of the utility model.
Claims (6)
1. the car body controller of a double-core MCU; It is characterized in that: comprise main control MCU unit (1), auxilliary control MCU unit (2), receiving element (3) and incoming signal processing unit (4); Described auxilliary control MCU unit (2) is connected with main control MCU unit (1) communication; Described receiving element (3) is electrically connected with auxilliary control MCU unit (2), and described incoming signal processing unit (4) is electrically connected with main control MCU unit (1).
2. the car body controller of double-core MCU according to claim 1 is characterized in that: described auxilliary control MCU unit (2) is connected through the RS485 serial communication with main control MCU unit (1).
3. the car body controller of double-core MCU according to claim 1 is characterized in that: described auxilliary control MCU unit (2) is connected through wireless telecommunications with main control MCU unit (1).
4. according to the car body controller of claim 1 or 2 or 3 described double-core MCU, it is characterized in that: the car body controller of described double-core MCU also comprises IMMO communication unit (5), and described IMMO communication unit (5) is electrically connected with auxilliary control MCU unit (2).
5. according to the car body controller of claim 1 or 2 or 3 described double-core MCU, it is characterized in that: described main control MCU unit (1) is provided with high-speed CAN communication interface and low speed CAN communication interface.
6. according to the car body controller of claim 1 or 2 or 3 described double-core MCU, it is characterized in that: described main control MCU unit (1) is provided with the LIN communication interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120569308XU CN202448893U (en) | 2011-12-31 | 2011-12-31 | Automobile body controller of dual-core MCU (Microprogrammed Control Unit) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120569308XU CN202448893U (en) | 2011-12-31 | 2011-12-31 | Automobile body controller of dual-core MCU (Microprogrammed Control Unit) |
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| Publication Number | Publication Date |
|---|---|
| CN202448893U true CN202448893U (en) | 2012-09-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120569308XU Expired - Fee Related CN202448893U (en) | 2011-12-31 | 2011-12-31 | Automobile body controller of dual-core MCU (Microprogrammed Control Unit) |
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| CN (1) | CN202448893U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105844793A (en) * | 2016-04-21 | 2016-08-10 | 常州永安公共自行车系统股份有限公司 | Self-service card receiving and sending system, card receiving and sending system and special station controller |
| CN108696590A (en) * | 2018-05-15 | 2018-10-23 | 北京经纬恒润科技有限公司 | A kind of car networking equipment awakening method and car networking equipment |
-
2011
- 2011-12-31 CN CN201120569308XU patent/CN202448893U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105844793A (en) * | 2016-04-21 | 2016-08-10 | 常州永安公共自行车系统股份有限公司 | Self-service card receiving and sending system, card receiving and sending system and special station controller |
| CN108696590A (en) * | 2018-05-15 | 2018-10-23 | 北京经纬恒润科技有限公司 | A kind of car networking equipment awakening method and car networking equipment |
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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: 20120926 Termination date: 20141231 |
|
| EXPY | Termination of patent right or utility model |