CN211398541U

CN211398541U - Automatic derailleur selector control unit

Info

Publication number: CN211398541U
Application number: CN201921447126.8U
Authority: CN
Inventors: 韦秀将; 盛一方
Original assignee: Zhejiang Hongji Intelligent Control Co ltd
Current assignee: Zhejiang Hongji Intelligent Control Co ltd
Priority date: 2019-09-02
Filing date: 2019-09-02
Publication date: 2020-09-01
Anticipated expiration: 2029-09-02

Abstract

The utility model discloses an automatic derailleur selector control unit, including main control chip, power module, CAN communication module, data storage module, motor drive module, signal processing module, position detection module, connector module. The gear shifter control unit directly integrates a position sensor signal detection unit on the gear shifting device into the control unit, and meanwhile, the control unit is integrated on the gear shifting device for installation, so that the installation volume is greatly reduced, the length of a wire harness is also reduced, the cost is saved, and meanwhile, the reliability of signals can be improved.

Description

Automatic derailleur selector control unit

Technical Field

The utility model relates to a derailleur technical field especially relates to an automatic transmission selector control unit.

Background

The current market for automatic transmission vehicles is getting heavier, and Automatic Transmission (AT) plays a very important role in automatic transmission vehicles.

Generally, the Automatic Transmission (AT) gears required to be operated by a driver are parking (P), reverse (R), neutral (N) and forward (D), and the Automatic Transmission (AT) automatic gear shifter assembly comprises a control unit and a gear shifting mechanism, wherein the gear shifting mechanism comprises a direct current motor and a position sensor besides a mechanical part. The shifter control unit can receive switch signals (intention of a driver) to drive the automatic shifter motor instead of a mechanical cable of the control lever, and the automatic transmission gear shifting control mechanism is switched to different positions to shift gears. And meanwhile, the gear state recognized by the position sensor is read in real time to realize closed-loop control.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art not enough, provide an automatic transmission selector control unit.

In order to achieve the above object, the present invention provides the following technical solutions:

the utility model provides an automatic derailleur selector control unit, including main control chip, the power module, CAN communication module, the data storage module, motor drive module, signal processing module, the position detection module, the connector module, power module's input links to each other with the connector module, power module's output respectively with main control chip, CAN communication module, the data storage module, motor drive module, signal processing module, the position detection module links to each other in order to provide the power, CAN communication module's signal input part, signal output part all links to each other with the connector module, signal connection between CAN communication module and the main control chip, the data storage module links to each other with main control chip, motor drive module links to each other with main control chip, the position detection module links to each other with signal processing module, signal processing module links to each other with main control chip.

Preferably, the system further comprises a watchdog monitoring module, and the watchdog monitoring module is connected with the main control chip.

Preferably, the main control chip is a KEA128 single chip microcomputer.

Preferably, the power module is UAJ1169 chips.

Preferably, the motor driving module is a VNH7070 chip.

Preferably, the position detection module is an MLX90365 chip.

The beneficial effects of the utility model are that, assemble all modules together: the control unit designs a common position sensor into a position detection module to be integrated into the control unit, so that the cost can be saved, and meanwhile, a plurality of interference signals can be reduced due to the shortening of a transmission signal line, so that the accuracy and the safety of the signals are improved. In addition, the control unit of the design also uses other integrated chips, so that the volume of the product can be reduced to the maximum extent, the cost is reduced, the requirement of the current automobile on the quantization trend is met, the safety and the reliability of the product are also improved, and the control unit can reliably operate in the external environment of minus 40 degrees to 125 degrees.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Detailed Description

The following describes an embodiment of the present invention in detail with reference to fig. 1.

The CAN communication module is used for controlling the communication between the unit and other controllers of the whole vehicle, receiving information and sending out instructions and states, and has a CAN remote awakening function.

The data storage module is used for storing some abnormal and fault signals monitored in the operation process of the control unit and self-learning values of the control unit.

Preferably, the system further comprises a watchdog monitoring module, wherein the watchdog monitoring module is connected with the main control chip and used for resetting the abnormal crash of the program.

Preferably, the main control chip is a special automobile 32-bit singlechip KEA128 based on an ARM Cortex-M0+ kernel of an NXP company, has rich resources, high safety and high cost performance, and is used for data processing and logic operation.

Preferably, the power supply module is a UAJ1169 chip, the power supply input is converted into 5V output after being subjected to anti-reflection and filtering processing, and stable voltage is output for each module machine in the control unit.

Preferably, the motor driving module is a full-bridge VNH7070 chip of ST company, can output 15A current to the maximum, has the protection functions of over-temperature, over-voltage, over-current and the like, outputs PWM with the frequency of 10-20K for driving a motor of the gear shifting mechanism, and simultaneously has the current detection function, and the main control chip reads the current to control the running state of the motor in real time and judges whether the motor runs normally or not.

Preferably, the position detection module is an MLX90365 chip of Melexis, can use two paths of analog quantity output which are mutually verified, can also use two paths of pulse quantity output which are mutually verified, and sends the two paths of pulse quantity output to the main control chip after being filtered by the signal processing module, so that the position detection module has strong anti-interference capability.

The automatic transmission gear-shifting control mechanism is additionally provided with a magnet, a position detection module of a control unit is arranged on the gear-shifting mechanism opposite to the magnet, the gear-shifting mechanism drives the magnet to move, the position detection module senses the change of a magnetic field and outputs an analog signal of corresponding change, and a main control chip can identify the current actual gear of a transmission according to the size of the analog signal through operation.

The connector module uses a CMC series 32-pin mixed waterproof plug special for automobiles of MOLEX company, and is electrically communicated with an external power supply, communication, motor load and the like of the controller unit.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. An automatic transmission shifter control unit characterized by: including main control chip, power module, CAN communication module, data storage module, motor drive module, signal processing module, position detection module, connector module, power module's input links to each other with the connector module, power module's output links to each other with main control chip, CAN communication module, data storage module, motor drive module, signal processing module, position detection module respectively in order to provide the power, CAN communication module's signal input part, signal output all link to each other with the connector module, signal connection between CAN communication module and the main control chip, data storage module links to each other with main control chip, motor drive module links to each other with main control chip and connector module, position detection module links to each other with signal processing module, signal processing module links to each other with main control chip.

2. The automatic transmission shifter control unit of claim 1, wherein: the watchdog monitoring module is connected with the main control chip.

3. The automatic transmission shifter control unit of claim 1, wherein: the main control chip is a KEA128 single chip microcomputer.

4. The automatic transmission shifter control unit of claim 1, wherein: the power supply module is UAJ1169 chips.

5. The automatic transmission shifter control unit of claim 1, wherein: the motor driving module is a VNH7070 chip.

6. The automatic transmission shifter control unit of claim 1, wherein: the position detection module is an MLX90365 chip.