KR100251798B1 - An integrated electronic control apparatus for protecting a wheel lock and driving power control device - Google Patents

Abstract

PURPOSE: A synthesized electronic control circuit of a vehicle wheel locking device and a drive force controller is provided to integrate each electronic controller, to control the prevention of vehicle wheel locking and drive force and to save production costs and an installation space. CONSTITUTION: In case that an ABS(anti-lock brake system) integrated element relay(13) is turned on according to a control signal outputted from a first microcontroller and an interface circuit(11), exciting coils(L1..Ln) of a solenoid valve are actuated. In case of the ABS integrated element relay is turned off, the exciting coils are not actuated. When a TCS(traction control system) integrated element relay(14) is turned on according to a control signal outputted from a second microcontroller and an interface circuit(12), a coil of a direct servo motor is actuated. When the relay(14) is turned off, the coil is not actuated. With a normal ABS integrated element relay and a normal vehicle wheel locking device, an ABS OK mark is brightly displayed by turning on an ABS verification lamp(2). With an electric defect in the ABS integrated element relay and the vehicle wheel locking device, the ABS OK mark is not displayed. With a normal TCS integrated element relay and a normal drive force controller, a TCS OK mark is brightly displayed by turning on a TCS verification lamp(4). With an electric defect, the TCS OK mark is not displayed by turning off the TCS verification lamp. Thus, the vehicle locking prevention and the drive force are controlled through the synthesized electronic controller.

Description

Integrated electronic control circuit of wheel lock prevention device and driving force control device

The present invention relates to an electric wiring and an electronic control circuit of a wheel lock prevention device and a driving force control device. In particular, the electronic controller of each wheel lock prevention device and a driving force control device is integrated into a power solid state relay. The integrated electronic control circuit of the wheel lock prevention device and the drive force control device is designed to reduce the mounting space and the production cost by using integrated circuit elements and verification, and to ensure the safety of the wheel lock prevention device and the drive force control device. will be.

In general, the wheel lock prevention device and the driving force control device require a respective electronic controller, and the wheel lock prevention device controls the braking force of the vehicle by operating or deactivating the solenoid valve using the electronic controller. Controls the engine output of the vehicle by opening and closing the electronic throttle, which is directly operated by a DC servomotor.

As the operation and non-operation of the solenoid valve as described above directly affect the braking force, and the fine opening and closing of the throttle valve has a great influence on the engine output, driving and driving safety of the vehicle in the electronic control of the solenoid valve and the throttle valve. In order to control the solenoid valve and the throttle valve, each electronic controller of the wheel lock prevention device and the driving force control device must be quickly and accurately controlled.

On the other hand, the electronic controller of the wheel lock prevention device to prevent the malfunction of the solenoid valve by shutting off the power supply of the solenoid valve when the power supply is unstable or detects a malfunction such as a short circuit of the solenoid coil or an overcurrent state of the solenoid valve Ensure vehicle and driver safety.

At this time, when the power supply to the solenoid valve is cut off, the braking force is directly added to or depressed by the driver pressing the brake pedal.

When the electronic controller of the driving force control device detects a malfunction such as a short circuit of the DC motor coil or an overcurrent state of the motor, the electronic controller of the driving force control device cuts off the power supply of the DC motor to prevent malfunction of the throttle valve, thereby improving safety of the vehicle and the driver. To ensure.

At this time, when the power supply to the DC motor is cut off, the throttle valve is directly operated by the accelerator pedal so that the acceleration / deceleration driving of the vehicle is directly performed by the driver rather than controlled by the electronic controller.

However, as described above, the conventional anti-locking device and the driving force control device have their respective electronic controllers, and thus, even if several sensor signals and input / output signals required are the same, they must be input through different wirings. There is a problem that the production cost is increased because a separate space for mounting the electronic controller.

The present invention has been made to solve the above problems, the object of which is to integrate the respective electronic controller for the wheel lock prevention device and the driving force control unit into one electronic controller, through the integrated electronic controller to prevent wheel lock The integrated electronic control circuit of the wheel lock prevention device and the drive force control device enables not only control, but also driving force control, as well as reducing mounting space and production cost, while ensuring safety of the wheel lock prevention device and the drive force control device. Is in providing.

The integrated electronic control circuit of the wheel lock preventing device and the driving force control device of the present invention for achieving this object integrates each electronic controller for the wheel lock preventing device and the driving force control device into one electronic controller, The input terminal of the ABS integrated device relay and the TCS integrated device relay included in the controller is connected to the battery power source, and the output terminal thereof is connected to the solenoid valve driving circuit and the DC servomotor driving circuit, so that the control signal is output from the first microcontroller and the interface circuit. According to the ABS integrated device relay is turned on, the excitation coil of the solenoid valve is activated and is off when it is turned off, when the TCS integrated device relay is turned on in accordance with the control signal output from the second microcontroller and the interface circuit DC servomotor To operate the coil and turn off when it is off When the ABS integrated device relay and the wheel lock prevention device are normal, the ABS verification light is turned on according to a control signal output from the first microcontroller and the interface circuit to display the ABS OK verification display brightly, and the ABS integrated device relay If an electrical defect occurs in the wheel lock prevention device, the ABS verification lamp is turned off so that the ABS OK verification label is not displayed. When the TCS integrated device relay and the driving force control device are normal, the second micro controller and the interface circuit are controlled. The TCS verification lamp is brightly lit by turning on the TCS verification lamp according to the output control signal, and the TCS verification lamp is displayed by turning off the TCS verification lamp when an electrical defect occurs in the TCS integrated device relay and the driving force control device. So that the driver can recognize it. do.

1 is a block diagram of an integrated electronic control circuit of the wheel locking prevention device and the driving force control device according to the present invention.

2 is a detailed view of the driving circuit of the ABS verification of FIG.

3 is a detailed view of a driver circuit such as the TCS verification of FIG.

4 is a detailed view of the solenoid valve driving circuit of FIG.

* Explanation of symbols for main parts of the drawings

1: Storage battery F1-F5: 1st-5th fuse

S1: Ignition switch 2: ABS verification light

3: ABS OK Verification Cover 4: TCS Verification

5: TCS OK verification cover 10: Integrated electronic controller

11: first microcontroller and interface circuit

12: second microcontroller and interface circuit

13: ABS integrated device relay 14: TCS integrated device relay

15: ABS verification light driving circuit 16: TCS verification light driving circuit

17: solenoid valve driving circuit 18: DC servo motor driving circuit

Hereinafter, with reference to the accompanying drawings will be described in detail the configuration and operation of the integrated electronic control circuit of the wheel locking prevention device and driving force control device according to the present invention.

1 is a block diagram of the integrated electronic control circuit of the wheel locking prevention device and the driving force control device according to the present invention, the negative terminal is grounded to the vehicle body through the ground (G1), the storage battery for supplying the power required for the operation of the vehicle electrical apparatus (1) and the first fuse to the third fuse (F1 to F1), which are connected to the positive terminal of the storage battery 1 and immediately shut off the power when an overcurrent exceeding the rated current flows due to an electrical defect such as a short circuit in the electric device. F3), an ignition switch S1 connected to the third fuse F3, a fourth fuse and a fifth fuse F4 and F5 connected to the ignition switch S1, and a light emitting diode LED. ABS lock light (2) to display the operation of the wheel lock prevention device through the ABS OK verification mark (3) of the instrument panel, and the light emitting diode (LED) to verify the operation of the driving force control device TCS OK of the instrument panel TCS verification lamp (4) to display through mark (5) and soleno Activate or deactivate the excitation coils (L1, L2, .., Ln) of the valve to adjust the hydraulic pressure in the brake caliper to prevent the wheel from locking or to operate the DC servomotor (M) to open or close the throttle valve. It is composed of an integrated electronic controller 10 for controlling the engine output of the vehicle by adjusting.

The integrated electronic controller 10 may provide a drive control signal for operating or deactivating the excitation coils L1, L2,... Ln of the solenoid valve and a control signal for turning on or off the ABS verification light 2. A second microcontroller for outputting a first microcontroller and interface circuit 11 to output, a drive control signal for driving the DC servomotor M, and a control signal for turning on or off the TCS verification lamp 4; And supplying or cutting off the voltage of the storage battery 1 according to an interface circuit 12 and a control signal output from the first microcontroller and the interface circuit 11, and detecting an electrical defect through a self-diagnostic action. The voltage of the storage battery 1 is shared in accordance with an ABS integrated device relay 13 for outputting a diagnostic signal and a control signal output from the second microcontroller and the interface circuit 12. Or a TCS integrated device relay 14 for outputting a diagnostic signal when detecting an electrical fault through a self-diagnostic action, a control signal output from the first microcontroller and the interface circuit 11, and the ABS integrated device. An ABS verification lamp driving circuit 15 for turning on or off the ABS verification lamp 2 according to a self-diagnosis signal output from the relay 13, and a control signal output from the second microcontroller and the interface circuit 12; An output from the first microcontroller and interface circuit 11 and a TCS verification light driver circuit 16 for turning on or off the TCS verification light 4 according to a self-diagnosis signal output from the TCS integrated device relay 14; Sol for supplying or blocking the voltage of the battery 1 output through the ABS integrated device relay 13 to the excitation coils L1, L2, .., Ln of the solenoid valve according to the driving control signal. The TCS integrated device relay 14 includes a solenoid valve driving circuit 17 and a full bridge section, and is driven in accordance with a driving control signal output from the second microcontroller and the interface circuit 12. It consists of a DC servo motor drive circuit 18 for supplying or interrupting the voltage of the storage battery 1 output through the DC servo motor (M).

The rated power of the first fuse F1 satisfies the sum of the rated currents of the excitation coils L1, L2, .., Ln of the solenoid valve, and the second fuse F2 is the rated current of the DC servomotor M. , The rated power of the fourth fuse (F4) satisfies the rated current of the TCS verification lamp (4), the rated power of the fifth fuse (F5) satisfies the rated current of the ABS verification lamp (2), The rated power of the third fuse F3 is determined to satisfy the sum of the rated currents of the ABS verification lamp 2 and the TCS verification lamp 4.

In addition, the first microcontroller and interface circuit 11 and the second microcontroller and interface circuit 12 are capable of data communication to exchange data with each other.

FIG. 2 is a detailed view of the driving circuit 15 of the ABS verification lamp of FIG. 1. The diagnostic signal SMON output from the ABS integrated device relay 13 and the driving output from the first microcontroller and interface circuit 11 are illustrated in FIG. An AND gate 31 for ANDing the control signal SDRV and the driving control signal ALED output from the AND gate 31 and the first microcontroller and interface circuit 11 are ORed together. An OR gate 32 and a first power field effect transistor MT1 that is turned on or off in response to the output of the OR gate 32, As shown in FIG. 3, the logical signal multiplying the diagnostic signal MMON output from the TCS integrated device relay 13 and the driving control signal MDRV output from the second microcontroller and the interface circuit 12 is performed. AND gate 41 and exit of the AND gate 41 An OR gate 42 for ORing the driving control signal TLED output from the second micro controller and the interface circuit 12, and a second power electric field that is turned on or off in response to an output of the OR gate 42. It consists of the effect transistor MT2.

As shown in FIGS. 2 and 3, the resistor R is connected between the voltage VCC of 5V and the open drain output terminal MON of the ABS integrated device relay 13 or the TCS integrated device relay 14.

FIG. 4 is a detailed view of the solenoid valve driving circuit 17 of FIG. 1. The solenoid valve driving circuit 17 of FIG. 1 is connected to the ABS integrated device relay 13 according to the driving control signals RDRV1 to RDRVn output from the first microcontroller and the interface circuit 11. The excitation coils L1, L2, ..., Ln of the solenoid valves are activated or deactivated by inputting the power supply of the storage battery 1 supplied or cut off, or the excitation coils L1, L2 of the solenoid valves through a diagnostic action. In case of detecting an electrical defect of Ln, integrated device relays 51 to 54 outputting diagnostic signals RMON1 to RMONn to the first microcontroller and the interface circuit 11, and the integrated device relay (Ln). A resistor (R1 to Rn) connected between the input terminal (VDD) and the output terminal (OUT) of 51 to 54 to detect the opening of the excitation coils L1, L2, ..., Ln of the solenoid valve, and the (R1 to Rn). Zener diodes ZD1 to ZDn connected in parallel with Rn to prevent overvoltage.

Referring to the operation of the integrated electronic control circuit of the wheel locking prevention device and driving force control device according to the present invention configured as described above are as follows.

First, after the ignition switch S1 is closed by starting the vehicle, if the wheel lock preventing device and the integrated electronic controller 10 have no electrical defect, the first microcontroller and interface circuit 11 of the integrated electronic controller 10 The output terminal OUT of the ABS integrated device relay 13 is turned on by outputting a high control signal SDRV to the input terminal IN of the ABS integrated device relay 13.

Accordingly, the power source of the storage battery 1 is connected to the wire 20 from the first fuse F1, the input terminal VDD of the ABS integrated device relay 13, the output terminal OUT of the ABS integrated device relay 13, and the circuit line. It is supplied to the solenoid valve driving circuit 17 via SPWR to operate the excitation coils L1, L2, ..., Ln of the final solenoid valve to control the braking force of the vehicle.

In addition, after the ignition switch S1 is closed due to the start of the vehicle, if the driving force controller and the integrated electronic controller 10 are free of electrical defects, the second microcontroller and interface circuit 12 of the integrated electronic controller 10 may have a TCS. The output terminal OUT of the TCS integrated device relay 14 is turned on by outputting a high control signal MDRV to the input terminal IN of the integrated device relay 14, whereby the power supply of the battery 1 is discharged. DC servomotor drive circuit (2) from the fuse F2 through the wire 21, the input terminal VDD of the TCS integrated device relay 14, the output terminal OUT of the TCS integrated device relay 14, and the circuit line MPWR. 18), the final DC servomotor (M) is driven to control the engine output of the vehicle.

On the other hand, the first microcontroller and interface circuit 11 performs the calculation of the wheel lock prevention and driving force control algorithm in the first calculation loop time (time1), and the second microcontroller and interface circuit 12 calculates the second calculation. The DC servomotor control algorithm is calculated with the loop time (time2).

In this case, the second calculation loop time time2 of the second microcontroller and interface circuit 12 is smaller than the first calculation loop time time1 of the first microcontroller and interface circuit 11. Can be precisely controlled.

The first microcontroller and interface circuit 11 outputs the drive control signals RDRV1 to RDRVn of the solenoid valve excitation coils L1, L2, ..., Ln when control of braking force is required to prevent the wheels from being locked. Outputs to the solenoid valve driving circuit 17, calculates the target throttle valve opening degree required for engine output control according to the driving force control algorithm, and targets the second microcontroller and the interface circuit 12 every third calculation loop time (time3) period. Send the throttle valve opening.

Then, the second microcontroller and interface circuit 12 performs calculation of a control algorithm of the DC servomotor M based on the target throttle valve opening degree transmitted from the first microcontroller and interface circuit 11 to perform a direct current. Outputs the rotation angle signal of the servomotor (M).

The open-drain output terminal MON of the ABS integrated device relay 13 or the TCS integrated device relay 14 performs a diagnostic action on the ABS integrated device relay 13 and the TCS integrated device relay 14 itself. When the ABS integrated device relay 13 and the TCS integrated device relay 14 are normal, the high diagnostic signals SMON and MMOM are transmitted to the first microcontroller and interface circuit 11 and the second microcontroller and interface circuit 12. Outputted to the driving circuit 15 of the ABS verification lamp and the driving circuit 16 of the TCS verification lamp and output to the input terminal VDD of the ABS integrated device relay 13 and the TCS integrated device relay 14. When the voltage of (1) indicates a low voltage condition or a high voltage condition, or when the load connected to the output terminal (OUT) is short-circuited and overcurrent flows, the ABS integrated device relay 13 and the TCS integrated device relay 14 become hot. Find the same fault condition In this case, the output terminal OUT is turned off and the low diagnostic signals SMON and MMOM are applied to the first microcontroller and the interface circuit regardless of the control signals SDRV and MDRV applied to the input terminal IN. 11) and the second microcontroller and interface circuit 12, respectively, to the driving circuit 15 of the ABS verification lamp and the driving circuit 16 of the TCS verification lamp.

On the other hand, the ABS verification circuit driving circuit 15 is a diagnostic signal (SMON) output from the ABS integrated device relay 13, and the driving control signals (SDRV, ALED) output from the first microcontroller and interface circuit 11 The driving circuit 16 such as the TCS verification and the like may include the diagnostic signal MMOM output from the TCS integrated device relay 14 and the driving control signal MDRV, output from the second microcontroller and interface circuit 12. TLED).

Referring to FIG. 2, the operation of the driving circuit 15 such as the ABS verification circuit will be described. When the vehicle is in operation, the first microcontroller and the interface circuit 11 may control the low power first field effect transistor MT1 driving control signal ( ALED) is output to the OR gate 32 of the driving circuit 15 of the ABS verification lamp.

Then, the ABS integrated device relay 13 normally outputs a high diagnostic signal SMON, and the wheel lock preventing device and the integrated electronic controller 10 are normally high from the first microcontroller and the interface circuit 11. Outputs the driving control signal SDRV to the AND gate 31 of the driving circuit 15 such as the ABS verification, the first power field effect transistor MT1 is turned on with the high output of the OR gate 32 to verify the ABS. When the lamp 2 lights up, the ABS OK verification mark 3 of the instrument panel is displayed brightly.

That is, when the first power field effect transistor MT1 is turned on, the third fuse F3, the ignition switch S1, the fifth fuse F5, the wire 22, and the ABS are verified from the positive terminal of the battery 1. Through the first power field effect transistor MT1, the ground G2, the vehicle body, and the ground G1 of the driving circuit 15 of the lamp 2, the wire 23, the ABS verification lamp, etc., the cathode terminal of the battery 1 is connected. When the current flows, the light emitting diode of the ABS verification lamp 2 is turned on so that the ABS OK verification mark 3 is displayed brightly so that the driver recognizes that the wheel lock preventing device can be normally operated.

At this time, if the integrated electronic controller 10 is not attached to the vehicle, the ABS verification light (2) is turned off so that the ABS OK verification mark (3) of the instrument panel is not displayed, so that the driver cannot operate the wheel lock prevention device. It becomes aware.

On the other hand, when the vehicle locking device prevents an electrical defect or malfunction of the microcontroller or the microcontroller malfunctions, the first microcontroller and the interface circuit 11 detects this and outputs a low control signal SRDV to the ABS integrated device relay. The power supply of the storage battery 1 is not connected to the circuit line SPWR by outputting the input terminal IN of the 13 and the AND gate 31 of the driving circuit 15 such as the ABS verification.

In addition, even when an electrical fault of a load connected to the circuit line SPWR is detected by the ABS integrated device relay 13 itself, a low diagnostic signal SMON is provided to the AND gate 31 of the driving circuit 15 of the ABS verification lamp. Is output.

As described above, if any one of the driving control signal SDRV output from the first microcontroller and the interface circuit 11 and the diagnostic signal SMON output from the ABS integrated device relay 13 is low, As the output goes low, the two input signals of the OR gate 32 become low at the same time. As a result, the first power field effect transistor MT1 is turned off to turn off the ABS verification lamp 2 so that the ABS OK verification mark on the instrument panel ( 3) is not displayed, the driver recognizes that the wheel lock prevention device of the driving vehicle cannot be operated.

In addition, if the wire 22 or the wire 23 is disconnected while the vehicle is running, the ABS verification lamp 2 is turned off so that the ABS OK verification mark 3 on the instrument panel is not displayed. You will notice what happened.

In addition, when diagnosing the failure of the wheel lock prevention device while the vehicle is stopped, the first microcontroller and the interface circuit 11 output the driving control signal SDRV low and according to the failure code stored in the memory. By turning on / off the power field effect transistor MT1 driving signal ALED high and low, the ABS verification lamp 2 blinks so that the ABS OK verification mark 3 on the instrument panel displays a fault code.

Next, referring to FIG. 3, the operation of the driver circuit 16 such as the TCS verification will be described. When the vehicle is in operation, the second microcontroller and the interface circuit 12 control the driving of the second power field effect transistor MT2 of the row. The signal TLED is output to the OR gate 42 of the driving circuit 16 such as a TCS verification.

Then, the TCS integrated device relay 14 normally outputs a high diagnostic signal (MMON), and the driving force control device and the integrated electronic controller 10 are normally high from the second microcontroller and the interface circuit 12. When the driving control signal MDRV is output to the AND gate 41 of the driving circuit 16 such as the TCS verification circuit, the second power field effect transistor MT2 is turned on at the high output of the OR gate 42 so that the TCS verification lamp ( 4) lights up so that the TCS OK verification mark (5) on the instrument panel is brightly displayed.

That is, when the second power field effect transistor MT2 is turned on, the third fuse F3, the ignition switch S1, the fourth fuse F4, the wire 24, and the TCS are verified from the positive terminal of the battery 1. Through the second power field effect transistor MT2, the ground G3, the vehicle body, and the ground G1 of the driving circuit 16 of the lamp 4, the wire 25, the TCS verification lamp, etc., the negative terminal of the battery 1 is connected. As the current flows, the light emitting diode of the TCS verification lamp 4 is turned on so that the TCS OK verification mark 5 is displayed brightly, thereby recognizing that the driving force control device of the vehicle in which the driver is operating can be normally operated.

At this time, if the integrated electronic controller 10 is not attached to the vehicle, since the TCS verification lamp 4 is turned off, the TCS OK verification mark 5 of the instrument panel is not displayed and the driver recognizes that the driving force control device cannot be operated. Done.

On the other hand, when the driving force controller generates an electrical defect or the microcontroller malfunctions, the second microcontroller and the interface circuit 12 detects this and transmits a low driving control signal (MDRV) to the TCS integrated device relay. The power supply of the storage battery 1 is not connected to the circuit line MPWR by outputting it to the AND gate 41 of the driving circuit 16 such as the input terminal IN of the 14 and the TCS verification.

Also, even when the TCS integrated device relay 14 itself detects an electrical defect of a load connected to the circuit line MPWR, the AND gate 41 of the driving circuit 16 of the TCS verification lamp, etc., has a low diagnostic signal MMON. Is output.

As described above, if any one of the driving control signal MDRV output from the second microcontroller and the interface circuit 12 and the diagnostic signal MMON output from the TCS integrated device relay 14 is low, the AND gate 41 is low. Output becomes low, and the two input signals of the gate 42 become low at the same time. As a result, the second power field effect transistor MT2 is turned off to turn off the TCS verification lamp 4 so that the TCS OK verification mark on the instrument panel is turned off. Since (5) is not displayed, the driver recognizes that the driving force control device of the vehicle in operation cannot be operated.

In addition, if the wire 24 or the wire 25 is disconnected while the vehicle is running, the TCS verification lamp 4 is turned off so that the TCS OK verification mark 5 on the instrument panel is not displayed. You will notice that this has occurred.

When diagnosing a failure of the driving force control device while the vehicle is stopped, the second microcontroller and the interface circuit 12 output the driving control signal MDRV low, and according to the failure code stored in the memory, By turning on / off the power field effect transistor MT2 driving signal TLED high and low, the TCS verification lamp 4 blinks so that the TCS OK verification mark 5 on the instrument panel displays a fault code.

Subsequently, the operation of the solenoid valve driving circuit 17 will be described with reference to FIG. 4.

The integrated device relays 51 to 54 serving as high-side switches are similar in function to the ABS integrated device relay 13 or the TCS integrated device relay 14 and additionally have a load connected to the output terminal OUT in an off state. That is, the opening of the excitation coils L1, L2, ..., Ln of the solenoid valve is detected.

The resistors R1 to Rn are resistors necessary for detecting the load opening, and the excitation coils L1, L2, ..., Ln of the solenoid valve acting as a load are much larger than the resistance.

The first microcontroller and interface circuit 11 outputs high drive control signals RDRV1 to RDRVn to the solenoid valve drive circuit 17 to operate the excitation coils L1, L2,... Ln of the solenoid valve. When outputting to the input terminal IN of each of the integrated device relays 51 to 54, the power supply of the storage battery 1 shown in the circuit line SPWR is connected to the input terminal VDD and the output terminal OUT of the integrated device relays 51 to 54. Is supplied to the solenoid valve's excitation coils (L1, L2, .., Ln), so that the excitation coils (L1, L2, .., Ln) of the solenoid valve are operated, while outputting a low drive control signal. In this case, the excitation coils L1, L2, ..., Ln of the solenoid valve are deactivated.

Meanwhile, the Zener diodes ZD1 to ZDn overcome the overvoltage that may occur at the input terminal VDD when the integrated device relays 51 to 54 are turned off.

The integrated element relays 51 to 54 monitor the opening or disconnection of the excitation coils L1, L2, .., Ln of the solenoid valve when they are off, and the excitation coils L1, L2, ... of the solenoid valve. When the low end side of Ln is short-circuited to the potential of the battery 1, the fault is also monitored. When the low end side of the excitation coils L1, L2, ..., Ln of the solenoid valve is shorted to the potential of the battery 1, the integrated element ( The diagnostic signals RMON1 to RMONn of the row are output to the first microcontroller and the interface circuit 11 through the output terminals DGN of 51 to 54, and the excitation coils L1, L2, .., Ln of the solenoid valve are output. Is normal, the high diagnostic signals RMON1 to RMONn are output to the first microcontroller and interface circuit 11.

In addition, even when the integrated element relays 51 to 54 are turned on, the overcurrent state caused by the short-circuit of the excitation coils L1, L2, ..., Ln of the solenoid valve is monitored to provide the excitation coils L1, L2,. When Ln is shorted, the diagnostic signals RMON1 to RMONn of the row are output to the first microcontroller and the interface circuit 11 through the output terminal DGN of the integrated devices 51 to 54, and when the normality is normal, the first microcontroller is output. The high diagnostic signals RMON1 to RMONn are output to the controller and interface circuit 11.

Accordingly, the first microcontroller and the interface circuit 11 may generate excitation coils L1, L2, .., Ln of the solenoid valve through the diagnostic signals RMON1 to RMONn output from the integrated device relays 51 to 54. Detects electrical defects such as opening and short-circuit, and outputs a drive control signal SDRV of a low to the input terminal IN of the ABS integrated device relay 13 when an electrical defect is detected. 54, the low drive control signals RDRV1 to RDRVn are outputted to deactivate the excitation coils L1, L2, ..., Ln of the solenoid valve so that the brake device acts as a normal brake.

As described above, the present invention simultaneously operates the wheel lock prevention device and the driving force control device through an integrated electronic controller, and in particular, by applying two microcontrollers, a first microcontroller and an interface circuit and a second microcontroller and an interface. By the circuit, it is possible to precisely control the rotation angle of the DC servomotor by performing calculation of the wheel locking prevention and driving force control algorithm and the DC servomotor control algorithm.

In addition, since the integrated electronic controller applies two integrated device relays connected to the storage battery through the first fuse and the second fuse, when the electrical defect occurs only in the solenoid valve coil, wheel lock prevention control is impossible, but driving force control is possible. In addition, when an electric fault occurs only in the DC servomotor coil, the driving force control is impossible, but the wheel locking prevention control is possible, so that the functions of the wheel locking prevention and the driving force control device can be fully utilized.

For example, if a short circuit occurs in the excitation coil of the solenoid valve and the first fuse is melted, the second fuse is not affected. Even if a short circuit occurs in the DC servomotor and the second fuse is melted, There is no impact at all.

In addition, the first microcontroller and interface circuit is simplified as the integrated element relay of the solenoid valve drive circuit directly detects electrical defects such as disconnection and short circuit of the solenoid valve excitation coil. Since the solenoid valve's excitation coil is excited by the high-stage switch only when the solenoid valve needs to be operated, it can prevent the deterioration of the solenoid coil due to overcurrent and prevent the electrochemical corrosion of the solenoid coil due to the long-term vehicle life. Will be.

Finally, to ensure the safety of the wheel lock prevention device and the driving force control device, it is equipped with a driving circuit such as the ABS verification light and the TCS verification, and the ABS verification light and the TCS verification when the wheel lock prevention device and the driving force control device operate normally. As the lamp is turned on, the electrical wiring is simpler and the production cost is reduced as compared with the conventional method using the mechanical relay.

Claims (8)

Direct operation by a wheel lock prevention device and DC servomotor (M) to prevent wheel locking by controlling the hydraulic pressure in the brake caliper by actuating or deactivating the excitation coils (L1, L2, ..., Ln) of the solenoid valve In the electronic control circuit of the driving force control device for controlling the engine output of the vehicle through the opening and closing of the electronic throttle, ABS verification lamp (2) for displaying the operation of the wheel lock prevention device through the ABS OK verification mark (3) of the instrument panel; A TCS verification lamp 4 for displaying the operation force of the driving force control device through a TCS OK verification cover 5 of the instrument panel; A first microcontroller for outputting a driving control signal for operating or deactivating the excitation coils L1, L2, .., Ln of the solenoid valve and a control signal for turning on or off the ABS verification lamp 2; An interface circuit 11, a second microcontroller and interface circuit 12 for outputting a drive control signal for driving the DC servomotor M and a control signal for turning on or off the TCS verification lamp 4; In accordance with the control signal output from the first micro-controller and the interface circuit 11, ABS supply or cut off the voltage of the battery 1, and outputs a diagnostic signal when detecting an electrical fault through a self-diagnostic action According to a control signal output from the element relay 13 and the second microcontroller and the interface circuit 12, the voltage of the storage battery 1 is supplied or cut off, and In case of detecting an electrical defect through a diagnostic action, the TCS integrated device relay 14 outputs a diagnostic signal, the control signal output from the first microcontroller and the interface circuit 11 and the ABS integrated device relay 13. The ABS verification lamp driving circuit 15 which turns on or off the ABS verification lamp 2 according to the self-diagnosis signal output, the control signal output from the second microcontroller and the interface circuit 12 and the TCS integrated device relay. TCS verification lamp driving circuit 16 for turning on or off the TCS verification lamp 4 according to the self-diagnosis signal output from (14), and to the driving control signal output from the first microcontroller and interface circuit 11. Accordingly, the solenoid valve driving circuit supplies or cuts off the voltage of the battery 1 output through the ABS integrated device relay 13 to the excitation coils L1, L2, .., Ln of the solenoid valve. (17) and the voltage of the battery 1 output through the TCS integrated device relay 14 in accordance with the drive control signal output from the second micro-controller and interface circuit 12 to the DC servo motor (M). 2. An integrated electronic control circuit for a wheel lock prevention device and a driving force control device, characterized in that it is composed of an integrated electronic controller (10) consisting of a DC servomotor drive circuit (18) for supplying or cutting off. 2. The first computational loop of claim 1, wherein the first microcontroller and interface circuit 11 and the second microcontroller and interface circuit 12 are capable of data communication. By calculating the wheel lock prevention and driving force control algorithm at time time1, the target throttle valve opening required for engine output control is transmitted to the second microcontroller and interface circuit 12 every third calculation loop time (time3) periods. In this case, the second microcontroller and the interface circuit 12 performs the calculation of the control algorithm of the DC servomotor M at a second calculation loop time time2 based on the target throttle valve opening degree, so that the DC servomotor ( An integrated electronic control circuit of a wheel lock prevention device and a driving force control device, characterized by outputting a rotation angle signal of M). 3. The wheel lock preventing device according to claim 2, wherein the second calculation loop time of the second microcontroller and the interface circuit 12 is smaller than the first calculation loop time of the first microcontroller and the interface circuit 11. And an integrated electronic control circuit of the driving force control device. 2. The integrated electronic control circuit according to claim 1, wherein the ABS verification lamp (2) is a light emitting diode. 2. The integrated electronic control circuit according to claim 1, wherein the TCS verification lamp (4) is a light emitting diode. According to claim 1, The ABS verification circuit driving circuit 15 in the integrated electronic controller 10, the diagnostic signal (SMON) output from the ABS integrated device relay 13 and the first microcontroller and interface circuit ( An AND gate 31 logically multiplying the driving control signal SDRV output from 11), and the driving control signal ALED output from the output of the AND gate 31 and the first microcontroller and interface circuit 11. And a first power field effect transistor (MT1) that operates on / off in accordance with the output of the ora gate 32. Integrated electronic control circuit. According to claim 1, wherein the driver circuit 16, such as the TCS verification in the integrated electronic controller 10, the diagnostic signal (MMON) output from the TCS integrated device relay 14 and the second microcontroller and interface circuit ( An AND gate 41 that logically multiplies the driving control signal MDRV output from 12), and a driving control signal TLED output from the output of the AND gate 41 and the second microcontroller and interface circuit 12. And a second power field effect transistor (MT2) that is turned on and off in response to the output of the ora gate 42. Integrated electronic control circuit. The solenoid valve driving circuit 17 in the integrated electronic controller 10 is configured to integrate the ABS according to the driving control signals RDRV1 to RDRVn output from the first microcontroller and the interface circuit 11. The power supply of the storage battery 1 supplied or cut off by the element relay 13 is input to activate or deactivate the excitation coils L1, L2, .., Ln of the solenoid valve, or the diagnostic action of the solenoid valve. An integrated device relay 51 to 54 for outputting diagnostic signals RMON1 to RMONn to the first microcontroller and interface circuit 11 when detecting an electrical defect of the excitation coils L1, L2, ..., Ln; A resistor (R1 to Rn) connected between the input terminal (VDD) and the output terminal (OUT) of the integrated device relays (51 to 54) to detect the opening of the load; and an overvoltage connected in parallel to the resistors (R1 to Rn). Comprising zener diodes ZD1 to ZDn for preventing Integrated electronic control circuit of the wheel anti-lock device and a driving force control apparatus as.

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