KR100230036B1 - Vehicle chassis integrated electronic control unit - Google Patents

Abstract

The present invention provides a vehicle chassis integrated electronic control device that can control the various systems for the control of the vehicle chassis by communication networking to share various sensors to reduce the number of wires required for this and to modularize the various systems. When the various sensors and switches used in the system for controlling the vehicle chassis are connected to one sensor interface unit, the integrated electronic controller then transfers the result signals of the various sensors and switches signal-converted through the sensor interface unit to the network controller. And transmits to the corresponding system block through the network controller, and also receives the processing result of each system block through the network controller to collectively control the operation state of each system for the vehicle chassis control, and various sensors necessary for the vehicle chassis control. Sharing the switch By reducing the number of wires and using the sensor and the switch result signal, the system block can be individually modularized, and the overall control of the various system blocks can be achieved through the operation result of the system block. .

Description

Automotive Chassis Integrated Electronic Control Unit

The present invention provides a vehicle chassis integrated electronic control apparatus which can control various systems for vehicle chassis control by communication networking to share various sensors to reduce the number of wires necessary for this and to modularize various systems. It is about.

In general, the system for controlling the vehicle chassis uses wheel speed sensors, throttle position sensors (hereinafter referred to as 'TPS'), steering angle sensors, longitudinal acceleration sensors, lateral acceleration sensors, and brake switches. Electronic controlled suspension system (Electronic Controlled Suspension: hereinafter referred to as 'ECS') that detects and controls the optimum suspension state, and reaction force control system that controls the reaction force of the vehicle by using wheel speed sensor, steering angle sensor and TPS. Power steering system (hereinafter referred to as 'EPS'), wheel speed sensor, yaw rate sensor, lateral acceleration sensor, brake switch, steering angle sensor to automatically brake on / off according to the steering position of the vehicle. There is a vehicle dynamic control system called 'VDC'.

And, a driving force control system (Traction Control System: hereinafter referred to as 'TCS') using the wheel speed sensor, TPS, braking switch to control the wheel wheels due to excessive driving force during rapid start and acceleration of the vehicle, Four-wheel steering system that controls the steering conditions of four wheels using a brake switch, steering angle sensor, parking switch, rear angle sensor, iorate sensor, lateral acceleration sensor, and wheel speed sensor (4- Wheel Steering System: hereinafter referred to as '4WS'.

The system for controlling the vehicle chassis as described above performs a corresponding operation by using a sensor for each system independently.

However, since the sensors that require various conventional systems as described above are individually used, the number of wires connected to the sensors in the actual configuration becomes very large, and the signals for each signal in the electronic controller operating for each system. In many cases, the process is duplicated, and the system configuration becomes very complicated. In particular, there is a problem in that it is not possible to collectively control the operation state of the electronic controller according to the integrated control of the vehicle chassis.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and its object is to share various sensors by integrating and controlling the systems for vehicle chassis control by communication networking, which greatly reduces the number of wires connected thereto and various systems. It is possible to perform the operation individually, so that the system block can be modularized to reduce the cost, to control the operation state of the electronic controller collectively, and to integrate the other system easily and easily expand the vehicle chassis integrated electronic control device Is in providing.

In order to achieve the above object, the automobile chassis integrated electronic control apparatus of the present invention connects a sensor and a switch used in various systems for automobile chassis control to one sensor interface unit, and then the integrated electronic controller signals through the sensor interface unit. Transmitting the result signals of various sensors and switches to the corresponding system block through the network controller, and also receiving the processing result of each system block through the network controller to control the overall operation of each system for vehicle chassis control It is characterized by.

1 is a block diagram of a vehicle chassis integrated electronic control apparatus according to the present invention.

* Explanation of symbols for main parts of the drawings

1-1: digital sensor unit 1-2: analog sensor unit

10: sensor interface unit 11: digital signal processing unit

12: analog signal processing unit 20: integrated electronic controller

21: the first microcomputer 22: the second microcomputer

30: network controller 40: system processing unit

1 is a block diagram of a vehicle integrated electronic control apparatus according to the present invention, comprising a wheel speed sensor, a steering angle sensor, a braking switch, a parking switch, and a digital sensor unit 1-1 for outputting a pulse waveform of a digital signal; , Analog sensor unit (1-2) for outputting analog signal consisting of longitudinal acceleration sensor, lateral acceleration sensor, iorate sensor, wheel acceleration sensor, TPS, rear angle sensor, and chattering removal circuit (not shown) Using the digital signal processor 11 to remove the chattering from the pulse waveform of the digital signal output from the digital sensor unit 1-1 and the low pass filter (not shown). Among the analog signals output from 1-2) is made of an analog signal processing unit 12 for passing the usable frequency band and cut off unnecessary frequency band, car chassis control Various sensors and switches used for the purpose, namely wheel speed sensor, steering angle sensor, braking switch, parking switch in the digital sensor unit 1-1, longitudinal acceleration sensor, lateral acceleration sensor, io in the analog sensor unit 1-2 The sensor interface unit is connected to the rate sensor, the wheel acceleration sensor, the TPS, and the rear angle sensor through the minimum necessary wires, and inputs the result signals of the various sensors and switches to remove external noise and convert the signal into a signal suitable for the next output terminal. 10) and a first microcomputer 21 and a second microcomputer 22, which are two high performance microcomputers operating as a master and a slave, using an analog-to-digital converter (not shown). The analog signal output from the analog signal processing unit 12 in the sensor interface unit 10 is converted into a digital signal, and the converted signal and in the sensor interface unit 10 Input result signals of various sensors and switches output from the digital signal processing unit 11 to convert them into data corresponding to various system blocks used for the vehicle chassis control, and receive respective operation results transmitted from the various system blocks. An integrated electronic controller 20 that monitors and collectively controls an operation state of a system block, and performs a fail safe function on a result signal of various sensors and switches input to the sensor interface unit 10; The integrated electronic controller 20 transmits a result signal of various sensors and switches converted into corresponding data from the integrated electronic controller 20 to various system blocks by a constant protocol signal or transmits operation results of various system blocks by a constant protocol signal. The network controller 30 to transmit to the 20, and transmitted through the network controller 30 It is composed of a system processing unit 40 for performing a corresponding operation for the chassis control individually using the result signal of the various sensors and switches.

The first microcomputer 21 and the second microcomputer 22 in the integrated electronic controller 20 distribute the control logic in order to solve the overall control cycle problem caused by using a plurality of control logic. The processing result is obtained through parallel communication between the first microcomputer 21 and the second microcomputer 22.

The network controller 30 uses a CAN communication scheme that is currently being generalized.

The system processing unit 40 includes a VDS 41, a TCS 4 2, an ECS 43, an EPS 44, a 4WS 45 system, and the like for controlling a vehicle chassis. Can be installed and expanded.

In addition, since the system processor 40 performs control of all systems in the integrated electronic controller 20, only a simple data transmitter and an actuator driver based on a driving signal exist to play a simple role.

Referring to the operation of the vehicle chassis integrated electronic control apparatus of the present invention configured as described above, first, the digital signal processing unit 11 in the sensor interface unit 10 is mounted at each position of the vehicle and used for various vehicle chassis control And a sensing result and a switching result signal from a switch, that is, a wheel speed sensor, a steering angle sensor, a braking switch, and a parking switch of the digital sensor unit 1-1, and the analog signal processor 12 also receives a longitudinal acceleration sensor and a lateral acceleration sensor. The sensing result and the switching result signal are input from the iorate sensor, the wheel acceleration sensor, the TPS and the rear angle sensor.

Then, the digital signal processing unit 11 removes the chattering from the pulse waveform of the digital signal output from the digital sensor unit 1-1 by using the chattering removing circuit, and the low pass filter in the analog signal processing unit 12. The sensor interface unit 10 removes external noise from the sensing result and the switching result signal by passing an available frequency band among the analog signals output from the analog sensor 1-2 and blocking unnecessary frequency bands. The integrated electronic controller 20 converts the signal into a signal that can be processed accurately and outputs the signal to the integrated electronic controller 20.

On the other hand, the first microcomputer 21 or the second microcomputer 22 operating as a master in the integrated electronic controller 20, the sensing results and switching results required to perform the system operation from the system block of the system processing unit 40 Check if there is a transmission request signal that requires.

In this step, when the integrated electronic controller 20 receives a data transmission request signal through the network controller 30 from the corresponding system block of the system processor 40, the sensor interface unit 10 detects the corresponding sensing and switching results. The signal is selected to perform a fail safe function and then transmitted to the network controller 30.

Then, the network controller 30 transmits the data transmitted from the integrated electronic controller 20 to a system block corresponding to the system processor 40 by a predetermined protocol signal.

Therefore, the corresponding system block in the system processing unit 40 performs a desired operation separately from other system blocks.

In addition, the operation result performed in the system block in the system processing unit 40 is transmitted to the integrated electronic controller 20 via the network controller 30.

Accordingly, the integrated electronic controller 20 monitors and collectively controls the operation state of each system block as it receives the operation results of the individual system blocks in the system processing unit 40.

As described above, the present invention reduces the number of wires by sharing various sensors and switches required for the vehicle chassis control, and various system blocks can be individually operated using the sensor and the switch result signal. The system can be modularized, and overall control is possible through the operation results of various system blocks.

In addition, it is very convenient to mount a new other system for the vehicle chassis control has the advantage of easy expansion.

Claims (2)

Digital sensor unit 1-1 which consists of wheel speed sensor, steering angle sensor, braking switch and parking switch to output pulse wave of digital signal, longitudinal acceleration sensor, lateral acceleration sensor, iorate sensor, wheel acceleration sensor, TPS, An analog sensor unit 1-2 composed of a rear angle sensor and outputting an analog signal and a chattering removing circuit remove the chattering from the pulse waveform of the digital signal output from the digital sensor unit 1-1. It consists of an analog signal processor 12 which passes through the available frequency bands of the analog signals output from the analog sensor unit 1-2 using the digital signal processor 11 and the low pass filter and blocks unnecessary frequency bands. Wheel speed sensor, steering angle sensor, braking switch, parking switch, analog sensor unit in the digital sensor unit 1-1 used for chassis control ( 1-2) The longitudinal acceleration sensor, the lateral acceleration sensor, the iorate sensor, the wheel acceleration sensor, the TPS, the rear angle sensor are connected through the minimum necessary wires, and the resultant signals of the various sensors and switches are input to remove external noise. At the same time, the sensor interface unit 10 converts the signal to the next output stage, and the first microcomputer 21 and the second microcomputer 22, which are two high-performance microcomputers operating as a master and a slave, are analog-to-digital converters. Converts the analog signal output from the analog signal processing unit 12 in the sensor interface unit 10 into a digital signal, and outputs the converted signal and the digital signal processing unit 11 in the sensor interface unit 10. Inputs the result signals of various sensors and switches, and converts them into data corresponding to various system blocks used for car chassis control. Receives each operation result transmitted from various system blocks to monitor and control the operation state of the system block, and fail-safe on the result signals of various sensors and switches input to the sensor interface unit 10. the integrated electronic controller 20 performing a safe) function, and the result signals of various sensors and switches converted into corresponding data from the integrated electronic controller 20 and outputted to various system blocks by a predetermined protocol signal or various systems Chassis individually using the network controller 30 for transmitting the operation result of the block to the integrated electronic controller 20 by a predetermined protocol signal, and the result signals of various sensors and switches transmitted through the network controller 30. The system processing unit 40 includes a VDS 41, a TCS 42, an ECS 43, an EPS 44, and a 4WS 45 that perform a corresponding operation for control. Automobile chassis integrated electronic control device of that sex characteristics. According to claim 1, Vehicle chassis integrated electronic control apparatus, characterized in that it is possible to further add another system for the vehicle chassis control to the system processing unit (40).

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