CN214028520U - Multifunctional vehicle control unit integrated with vehicle body control - Google Patents
Multifunctional vehicle control unit integrated with vehicle body control Download PDFInfo
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- CN214028520U CN214028520U CN202120097909.9U CN202120097909U CN214028520U CN 214028520 U CN214028520 U CN 214028520U CN 202120097909 U CN202120097909 U CN 202120097909U CN 214028520 U CN214028520 U CN 214028520U
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Abstract
The utility model discloses a multi-functional vehicle control unit of integrated automobile body control relates to car control technical field, mainly includes first microprocessor and at least one second microprocessor that the communication is connected. Wherein, first microprocessor is as the logical operation unit of automobile body information processing and whole car control strategy, the second microprocessor is as automobile body signal acquisition, automobile body signal acquisition drive unit of automobile body signal control, be connected with switching value signal acquisition module, analog signal acquisition module, PWM signal acquisition module and other loads, this whole car control system is integrated with first microprocessor with the second microprocessor of connecting each acquisition module, communication each other adopts inside CAN to carry out signal interaction, reduce the communication load rate of whole car CAN bus, increase the security of automobile body control, reduce original automobile body controller, make whole car system integrate more, CAN effectual reduction cost and increase.
Description
Technical Field
The utility model relates to an automobile control technical field specifically indicates a multi-functional vehicle control unit of integrated automobile body control.
Background
The VCU vehicle controller is used as an electric control unit of the new energy vehicle, participates in decision-making calculation of important control information of the vehicle, and is the core of a new energy vehicle control system.
The vehicle body control generally comprises acquisition control of signals such as light, door control, windscreen wipers, air pressure and safety valves, the traditional new energy vehicle body controller and the whole vehicle controller are used as two independent electric control units, the vehicle body controller independently acquires the vehicle body signals such as the light, the door and the windscreen wipers for processing and control, and most of the vehicle body signals are independently acquired by the vehicle body controller for decision control. The vehicle control unit is used as a control core of the whole vehicle, and the vehicle body signal and the whole vehicle control strategy are fused to make decision control, so that the vehicle control unit has important significance on the safety of the whole vehicle.
Along with the function of the electronic system of the new energy automobile is rich continuously, the whole automobile communication bus is increased continuously, the quantity of electronic controllers is increased in a well spraying manner, the CAN communication of each electronic controller is hung on the whole automobile CAN bus, the communication load rate of the CAN bus is high, the communication fault probability is high, the integration systematicness is lacked, the whole automobile system is complex continuously, and the manufacturing cost of the whole automobile is increased. Therefore, designing the multifunctional vehicle control unit integrating vehicle body control, dividing and integrating the dispersed independent electronic controllers according to functional domains into a domain controller with higher computing capability is a necessary trend in the production process of the vehicle control system of the new energy vehicle.
Disclosure of Invention
The utility model provides a multi-functional vehicle control unit of integrated automobile body control to solve the above-mentioned problem that exists among the prior art.
The utility model adopts the following technical scheme:
the utility model provides an integrated multi-functional vehicle control unit of automobile body control, includes first microprocessor, first microprocessor is as the logical operation unit of automobile body information processing and whole car control strategy to this first microprocessor communication is connected with at least one second microprocessor, the second microprocessor is as automobile body signal acquisition drive unit of automobile body signal acquisition, automobile body signal control.
Further, the number of the second microprocessors is 2, and the two second microprocessors are respectively arranged at the front end and the rear end of the vehicle and respectively serve as a front slave station and a rear slave station.
Furthermore, the first microprocessor and the second microprocessor are in communication connection through an internal CAN.
Furthermore, the second microprocessor is in communication connection with a switching value signal acquisition module, an analog value signal acquisition module and a PWM signal acquisition module.
Specifically, the switching value signal acquisition module comprises a signal conditioning circuit connected in a communication mode and an analog multiplexer chip with the model number of SN74LV 4051A.
Specifically, the model of the main control chip of the first microprocessor is MPC 5744P.
Specifically, the model of the main control chip of the second microprocessor is S32K.
Specifically, the high-side driving circuit of the second microprocessor adopts a driving chip with the model number of BTS 50085.
From the above description of the structure of the present invention, compared with the prior art, the present invention has the following advantages:
the utility model discloses a whole car control system mainly includes first microprocessor and at least one second microprocessor that the communication is connected. Wherein, first microprocessor is as the logical operation unit of automobile body information processing and whole car control strategy, the second microprocessor is as automobile body signal acquisition, automobile body signal acquisition drive unit of automobile body signal control, be connected with switching value signal acquisition module, analog signal acquisition module, PWM signal acquisition module and other loads, this whole car control system is integrated with first microprocessor with the second microprocessor of connecting each acquisition module, communication each other adopts inside CAN to carry out signal interaction, reduce the communication load rate of whole car CAN bus, increase the security of automobile body control, reduce original automobile body controller, make whole car system integrate more, CAN effectual reduction cost and increase.
Drawings
Fig. 1 is a block diagram of the present invention.
Fig. 2 is a circuit diagram of the switching value signal acquisition module of the present invention.
Fig. 3 is a circuit diagram of the high-side driving circuit of the present invention.
Fig. 4 is a circuit diagram of the address line according to the present invention.
Detailed Description
The following describes embodiments of the present invention with reference to the drawings.
As shown in fig. 1, the multifunctional vehicle control unit integrated with vehicle body control mainly comprises a first microprocessor 1 and two second microprocessors 2. The first microprocessor 1 is used as a logical operation unit of vehicle body information processing and vehicle control strategies, and the model of the main control chip of the first microprocessor includes but is not limited to MPC 5744P.
The two second microprocessors 2 are connected to the first microprocessor 1 through internal CAN communication of the whole vehicle control system. And two second microprocessors 2 still reserve and have CAN communication circuit, CAN carry out CAN bus communication with other automatically controlled units outside this vehicle control unit.
As shown in fig. 1, the second microprocessor 2 is used as a vehicle body signal acquisition and driving unit for vehicle body signal acquisition and control, and the model of its main control chip includes but is not limited to S32K. The hardware circuit structures of the two second microprocessors 2 are completely the same, and the vehicle control unit distinguishes the two second microprocessors 2 through the address lines. The two second microprocessors 2 are respectively arranged at the front end and the rear end of the vehicle, are respectively used as a front slave station and a rear slave station, and are used for vehicle body signal acquisition and vehicle body signal control.
As shown IN fig. 1 to 4, IN particular, 3 address lines, i.e., CONT _ ADDR _ IN1, CONT _ ADDR _ IN2 and CONT _ ADDR _ IN3, are designed IN the second microprocessor 2, and the three address lines are connected to different levels to distinguish two second microprocessors 2. If CONT _ ADDR _ IN is connected with a high level, the triode is conducted, the MCU _ ADDR _ IN end detects that the triode is at a low level, and if CONT _ ADDR _ IN is connected with a low level, the triode is cut off, and the MCU _ ADDR _ IN end detects that the triode is at a high level. And the first microprocessor 1 may implement different logic control strategies for different second microprocessors 2.
As shown in fig. 1 to 4, the number of the second microprocessors can be increased or decreased according to the requirement, and is not limited to two.
As shown in fig. 1 to 4, the second microprocessor 2 is used as a vehicle body signal acquisition driving unit for vehicle body signal acquisition and vehicle body signal control, and is in communication connection with a switching value signal acquisition module 3, an analog signal acquisition module 4 and a PWM signal acquisition module 5.
As shown in fig. 1 to 4, the switching value signal acquisition module includes a signal conditioning circuit connected in communication and an analog multiplexer chip with model number SN74LV 4051A. The switching value signal enters the analog multiplexer chip through the signal conditioning circuit and enters the second microprocessor 2 through setting input channels with A, B, C address lines different, and input pins of the second microprocessor 2 can be saved. The second microprocessor 2 adopts AD to collect switching value input signals, so that the positive, negative and suspended three states of the input signals can be detected, namely, the three input states correspond to different AD values.
As shown in fig. 1 to 4, in addition, the high-side drive circuit of the second microprocessor 2 employs a drive chip of model BTS50085 manufactured by Infineon corporation for driving a relay for a vehicle or driving a high-current direct switch, thereby controlling the rotational speed of, for example, a wiper motor. The MCU _ HD _ OUT is an output pin of the second microprocessor 2, and the CONT _ HD _ OUT is an output pin of the high-side driver chip and is configured to drive an external load. The MCU _ acknowledge _ IN is an input single chip pin of the second microprocessor 2, and is configured to detect a current signal of the CONT _ HD _ OUT, and perform fault diagnosis on the load terminal by detecting a current value.
Specifically, when each channel of the output end of the driver chip BTS50085 is designed, 4 output pins of the high-side driver circuit are shorted as one driver pin for large-current driving. The IS pin of the driver chip BTS50085 serves as a current feedback pin, and the second microprocessor 2 detects the magnitude of the driving current through the IS pin, thereby performing fault diagnosis on the load.
The specific implementation method comprises the following steps: when the second microprocessor 2 receives the output driving signal instruction of the first microprocessor 1, the second microprocessor 2 sets the MCU _ HD _ OUT output pin to 1, and the high-side driver chip BTS50085 outputs 24V voltage for driving the load.
The above-mentioned be the utility model discloses a concrete implementation way, nevertheless the utility model discloses a design concept is not limited to this, and the ordinary use of this design is right the utility model discloses carry out immaterial change, all should belong to the act of infringement the protection scope of the utility model.
Claims (8)
1. The utility model provides a multi-functional vehicle control unit of integrated automobile body control which characterized in that: the intelligent vehicle body signal acquisition and control system comprises a first microprocessor, wherein the first microprocessor is used as a logic operation unit of vehicle body information processing and vehicle control strategies, the first microprocessor is in communication connection with at least one second microprocessor, and the second microprocessor is used as a vehicle body signal acquisition driving unit for vehicle body signal acquisition and vehicle body signal control.
2. The multifunctional vehicle control unit integrated with vehicle body control according to claim 1, characterized in that: the number of the second microprocessors is 2, and the two second microprocessors are respectively arranged at the front end and the rear end of the vehicle and respectively used as a front slave station and a rear slave station.
3. The multifunctional vehicle control unit integrated with vehicle body control according to claim 1, characterized in that: the first microprocessor and the second microprocessor are in communication connection through an internal CAN.
4. The multifunctional vehicle control unit integrated with vehicle body control according to claim 1, characterized in that: and the second microprocessor is in communication connection with a switching value signal acquisition module, an analog quantity signal acquisition module and a PWM signal acquisition module.
5. The multifunctional vehicle control unit integrated with vehicle body control according to claim 4, characterized in that: the switching value signal acquisition module comprises a signal conditioning circuit in communication connection and an analog multiplexer chip with the model number of SN74LV 4051A.
6. The multifunctional vehicle control unit integrated with vehicle body control according to any one of claims 1-5, characterized in that: the model of the main control chip of the first microprocessor is MPC 5744P.
7. The multifunctional vehicle control unit integrated with vehicle body control according to claim 5, characterized in that: the model of the main control chip of the second microprocessor is S32K.
8. The multifunctional vehicle control unit integrated with vehicle body control according to claim 7, characterized in that: the high-side driving circuit of the second microprocessor adopts a driving chip with the model number of BTS 50085.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120097909.9U CN214028520U (en) | 2021-01-14 | 2021-01-14 | Multifunctional vehicle control unit integrated with vehicle body control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120097909.9U CN214028520U (en) | 2021-01-14 | 2021-01-14 | Multifunctional vehicle control unit integrated with vehicle body control |
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| Publication Number | Publication Date |
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| CN214028520U true CN214028520U (en) | 2021-08-24 |
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| CN202120097909.9U Active CN214028520U (en) | 2021-01-14 | 2021-01-14 | Multifunctional vehicle control unit integrated with vehicle body control |
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2021
- 2021-01-14 CN CN202120097909.9U patent/CN214028520U/en active Active
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