KR100298726B1 - Device for controlling transmission shift of automobile - Google Patents

Abstract

PURPOSE: A control method of transmission shift is provided to accurately and quickly control the transmission shift by quickly analyzing the detected running information and treating a data by the detected information so that the transmission shock is prevented. CONSTITUTION: A control method of transmission shift comprises an ignition switch(IGSW) outputting signal related to the starting of an engine, a power treating unit treating a power of a battery as a power required in a control unit, inhibit switch(30) detecting a transmission range selected by a shift lever, an interface unit(40) treating the inhibit switch signal as the voltage of 5V, a vehicle speed detecting unit(50) detecting present speed information, an RPM detecting unit(60) detecting the RPM information, a throttle position detecting unit(80) detecting an information about the opening degree of a throttle valve, a control unit analyzing every detected information on the basis of data of a map table and then controlling the operation for the control of an object transmission, self-diagnosis, and operations for other shift controls, a solenoid driving unit(110) adjusting the duty pressure and the line pressure by driving the driving signals for synchronizing the object transmission to each solenoid valve according to the signal supplied from the control unit, a self-diagnosis switch(DGSW) requiring the output of a self-diagnosis data, an amplifying unit(160) amplifying the output self-diagnosis data, and storing unit in which a data about the use of an automatic transmission is set up and which outputs an appropriate data of a control logic according to the demand of a chip enable and an access.

Description

Gear shift control

The present invention relates to a shift control apparatus for a vehicle, and more particularly, to increase the operation speed of the control means, to provide accuracy in the operation of a target control, and to shift the control logic data. It relates to a control device.

In general, the shift control device of the automatic transmission analyzes the information of the vehicle speed and the throttle valve opening rate detected during operation, and the shift range selected by the shift lever through a set algorithm, and then selects the target shift stage and the selected shift stage. Control of hydraulic pressure supplied to each engagement element is performed for shift synchronization.

In the shift control apparatus of an automatic transmission applied to a conventional light vehicle, a control means is used as a 4-bit microcontroller.

Therefore, the control of the shift stage according to the analysis of the detected driving information is not performed quickly due to the decrease of the operation speed, and thus the shift response is degraded. Therefore, the riding comfort and output torque are reduced. The control is not performed correctly, which leads to many problems in the control of the automatic transmission.

In addition, there is a problem that can not respond quickly if there is data added by the change of the control logic.

The present invention has been made in view of the above-described general problems, and its object is to increase the operation speed of the control means so that the shift control according to the analysis of the detected driving information is made quickly and accurately, and thus the shift response and ride comfort In order to improve the performance of the control logic and to change the control logic, additional data can be easily reprogrammed.

1 is a block diagram of a shift control apparatus of a vehicle according to the present invention.

The present invention for achieving the above object is an ignition switch for outputting a signal for whether the engine is started;

Power processing means for processing the power of the battery applied through the contact of the ignition switch to the power required by the control means;

An inhibitor switch for detecting a shift range selected by a shift lever;

Interface means for processing the inhibitor switch signal to a voltage of 5V;

Vehicle speed detecting means coupled to an output driven gear which is an output of the transmission and a pinion to detect current vehicle speed information;

RPM detection means for detecting the rotational speed information of the engine through the interruption of the ignition coil;

Throttle position detecting means for detecting information of an opening degree change of the throttle valve which is varied according to the driving of the accelerator pedal;

A control means for analyzing the detected general driving information based on the data of the set map table, and then controlling the operation for controlling the target shift stage and the operation for self-diagnosis and other shift control;

Solenoid driving means for adjusting a duty pressure and a line pressure by driving a driving signal for synchronizing a target shift stage to each solenoid valve side in accordance with a signal applied from the control means;

A self-diagnosis switch for requesting output of self-diagnostic data detected during operation;

Amplifying means for amplifying the self-diagnosis data output from the control means to a predetermined predetermined level;

Program data of the control logic for the operation of the automatic transmission is set, and characterized in that it comprises a storage means for outputting the data of the control logic corresponding to the chip enable and access requirements of the microprocessor.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

As can be seen in Figure 1, the shift control apparatus for a vehicle according to the present invention, the battery 10, the ignition switch (IGSW), the power stage 20, the inhibitor switch 30, the interface unit 40, Vehicle speed detection unit 50, RPM detection unit 60, shaping circuit unit 70, throttle position detection unit 80, A / D converter 90, microprocessor 100, solenoid drive unit 110, first, second , The third solenoid valve 120, 130, 140, the self-diagnosis switch (DGSW), the self-diagnostic detector 150, the amplifier 160, the self-diagnostic output processor 170, the buffer 180, and the EPROM 190. The battery 10 supplies operating power required for each load of the shift control apparatus of the vehicle.

The ignition switch IGSW connects a power source of the battery 10 to each load by selecting an arbitrary contact point in the driver's trigger operation, and outputs a signal indicating whether the engine is started.

The power supply stage 20 is a regulator that processes the DC 13V power supply of the battery 10 applied through the contact of the ignition switch (IGSW) with a power supply of 5V to the microprocessor 100, the EPROM 190, and various TTL integrated circuits. Supply power to the side.

The inhibitor switch 30 detects the information of the shift range, "L", "2", "D", "N", "R", and "P" selected by the shift lever, and detects the corresponding electrical signal. Output

The interface unit 40 processes a signal for selecting a range of the shift lever detected by the inhibitor switch 30 as a voltage of 5V and applies the signal for the microprocessor 100 to the side.

The vehicle speed detector 50 detects the current vehicle speed information which is driven from the rotational speed of the driven gear by being coupled to the output driven gear which is an output of the transmission and then outputs a signal thereof.

RPM detection unit 60 detects the rotational speed information of the engine through the interruption of the ignition coil and then outputs a signal for it.

The shaping circuit unit 70 forms the vehicle speed and engine speed information detected as the frequency signal and applies it to the microprocessor 100.

The throttle position detector 80 detects information on the change in the opening rate of the throttle valve, which is variable according to the driving of the accelerator pedal, and outputs a signal thereof.

The A / D converter 90 converts the analog signal for the change in the opening degree of the throttle valve into a digital signal and applies it to the microprocessor 100.

The microprocessor 100 analyzes the detected general driving information based on the data of the set map table, and then controls the operation for controlling the target shift stage and the operation for self-diagnosis and other shift control.

The solenoid drive unit 110 drives a drive signal for synchronizing a target shift stage to each solenoid valve 120, 130, 140 according to a signal applied from the microprocessor 100 to generate a duty pressure and a line pressure. Adjust

The self-diagnosis switch (DGSW) switches the contact point for the output of the self-diagnosis data detected during operation at the driver's choice.

The self-diagnosis detection unit 150 applies a signal to the microprocessor 100 to request the output of the detected self-diagnosis data when the contact of the self-diagnosis switch DGSW is switched on.

The amplifier 160 includes a transistor Q2 and a transistor Q3 connected to the ring, and amplifies and outputs the self-diagnosis data output from the microprocessor 160 to a predetermined level.

The self-diagnosis output processor 170 processes and outputs diagnostic information applied through the amplifier 160 to a driver in a predetermined state for display.

The buffer 180 buffers a request signal for control logic access applied from the microprocessor 100 through a data bus to prevent a signal collision.

The EPROM 190 sets program data of the control logic for the operation of the automatic transmission and outputs data of the corresponding control logic according to the chip enable and access request of the microprocessor 100.

Referring to the operation of the shift control of the present invention having the function as described above is as follows.

The engine is maintained by switching the contact of the ignition switch (IGSW), and when the power of the battery 10 is supplied to each load device through the contact of the ignition switch (IGSW) and applied to the power stage 20, the power stage ( 20) converts the applied voltage of DC 13V into a voltage of 5V through a regulator and supplies it to the microprocessor 100, EPROM 190, and other TTL integrated circuits as operating power.

As described above, the driver shifts the gears "L", "2", "D", "N", "R", and "P" by operating the shift lever while the condition for starting the driving is set. When an arbitrary shift stage range is selected among the ranges, the inhibitor switch 30 detects information on the selected shift stage range and converts a signal thereof into a voltage of 5V through the interface unit 40 to the microprocessor 100 side. To apply.

Thereafter, the microprocessor 100 is configured to open and close the respective solenoid valves 120, 130, and 140 through the solenoid drive unit 110 according to the driving displacement of the accelerator pedal applied from the throttle position detector 80. Maintain operation by adjusting line pressure and duty pressure.

The vehicle speed detector 50 detects the current vehicle speed information from the rotational speed of the output driven gear of the transmission in a state where an arbitrary shift stage is selected and operated as described above, and the RPM detector 60 detects the engine from the ignition coil. The speed information of the motor is detected, and the speed and engine speed information in the form of frequency is shaped by a signal through a shaping circuit unit 70 and applied to the microprocessor 100 side.

In addition, the throttle position detector 80 detects the opening ratio information of the throttle valve which is changed according to the driving of the accelerator pedal, and then converts it into a digital signal through the A / D converter 90 and applies it to the microprocessor 100. .

At this time, the microprocessor 100 analyzes the applied vehicle speed and engine speed information and the opening ratio information of the throttle valve to determine the current vehicle speed and the opening ratio and load degree of the throttle valve, and then, within the shift range selected by the shift lever. In order to select an arbitrary shift stage, access to data set in the EPROM 190 through the data bus is required.

In the above, the data access request signal of the microprocessor 100 is prevented from colliding by the buffering operation of the buffer 180, and the access of data set in the EPROM 190 is performed by the third NAND gate NAND3 and the fourth NAND. Access to a signal required by the chip enable signal CE and the data enable signal DE of the gate NAND4 is performed.

Thereafter, the microprocessor 100 is selected by adjusting the duty pressure and the line pressure of each solenoid valve 120, 130, 140 through the solenoid driver 110 according to the data accessed from the EPROM 190. Proceed the shift of the gearshift stage.

As described above, when the driver switches the contact point of the self-diagnosis switch DGSW while the shift is automatically performed according to the opening rate and the vehicle speed of the throttle valve detected during the driving, the self-diagnosis detection unit 150 and the second NAND gate NAND2. Analyze the diagnostic data detected during the operation according to the signal applied through the A) and then amplify to a predetermined level through the amplifying unit 160 to process the predetermined state through the self-diagnostic output unit 170 to the lamp LP. Instructed by

As described above, in the automatic shift control apparatus according to the present invention, the analysis of the detected driving information and the processing of the data according to the detected information are performed quickly, so that the shift control is provided with accuracy and speed. This improves and enables rapid response when adding and changing control logic.

Claims (1)

In a vehicle shift control apparatus which performs a shift by adjusting a solenoid valve corresponding to a target shift stage by using a microprocessor which analyzes information about a vehicle speed, RPM, an opening ratio of a throttle valve, and a shift stage lever while driving a vehicle. , A self-diagnostic switch for switching a contact point for outputting self-diagnostic data detected during operation at the driver's choice; A self-diagnostic detector for applying a signal for outputting the detected self-diagnostic data to the microprocessor when the contacts of the self-diagnostic switch are switched on; An amplifying unit comprising a transistor and a transistor to be connected to Darlington and amplifying the self-diagnosis data output from the microprocessor to a predetermined level; The program data of the control logic for the operation of the automatic transmission is set and outputs the data of the corresponding control logic according to the chip enable and access requirements of the microprocessor, and the EPROM is connected to the microprocessor through a data bus and an address bus. and; And a buffer for preventing a collision of signals by buffering a request signal for control logic access applied from the microprocessor through a data bus.

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