KR100797033B1 - Method for diagnosticating error in shock absorber drive - Google Patents

Abstract

The present invention relates to a failure diagnosis method of a shock absorber driving unit, and receives an ignition (IGN) voltage of a vehicle and lowers it to an operating voltage (5V) for operating a microcomputer. After being operated by the operating voltage, the microcomputer controls the driving modules 150, 160, and 170 respectively according to the voltage corresponding to the selected mode provided from the mode switch. It is determined whether the provided voltage state is disconnected / shorted. In the case of the disconnection / short circuit, the circuit provides a disconnection / short circuit signal to the lamp driving module and simultaneously stops the driving module 150, 160, 170, and responds to the disconnection / short circuit signal generated during disconnection / short circuit. To control the lamp. Therefore, the driving module informs the driver of the fault diagnosis result that occurs when disconnection / short-circuit has an effect of determining in real time whether the shut-down of the shock-absorber even during operation.

Description

고장 METHOD FOR DIAGNOSTICATING ERROR IN SHOCK ABSORBER DRIVE}

FIG. 1 is a view in which two right and left shock absorbers are mounted in front of and behind a front wheel and a rear wheel of a vehicle, respectively.

2 is a block diagram for performing a failure diagnosis method of a shock absorber driving unit according to the present invention;

3 is a diagram illustrating a voltage normal and a drop phenomenon of the IGN voltage during the shock-over driving.

4 is a detailed flowchart illustrating a failure diagnosis method of a shock absorber driving unit according to the present invention.

<Description of the symbols for the main parts of the drawings>

100: fault diagnosis system for the drive unit 110: regulator

120: IGN monitoring circuit 130: switch input

140: microcomputer 150: front drive module

160: rear-front drive module 170: rear-rear drive module

180: lamp drive module

S1: Front shock absorber S2: Rear-front shock absorber                 

S3: Rear-rear shock absorber S4: Lamp

S5: mode switch

The present invention relates to a method for diagnosing a failure of a shock absorber driving unit. In particular, the present invention relates to a method for detecting a failure of a shock absorber driving module and informing a driver of a failure diagnosis result when a failure occurs due to disconnection / short circuit of the driving module. It is about.

Typically, the shock absorber is located at the front / rear of the front and rear wheels of the vehicle shown in FIG. 1 and absorbs and attenuates the natural vibrations generated by the impact of the spring when the vehicle is driven, thereby driving the vehicle safely. It is installed for a comfortable ride.

That is, the shock absorber acts to convert the up / down kinetic energy into heat, and varies depending on the method of action, such as a solid friction type or a gas and a hydraulic type, but mainly a hydraulic shock absorber is widely used.

The hydraulic shock absorber has a cylinder connected to the axle side by combining a long and thin cylinder and filled with oil, and a piston that is wrapped in a cover on the upper part of the cylinder and connected to the body side. At the same time as the orifice is installed, the hole is equipped with an automatic valve for opening and closing.

Accordingly, the piston compresses the oil in the cylinder or absorbs the natural vibration of the spring as the spring expands with the elastic force of the spring in response to the impact of the spring while the vehicle is driving. In particular, the shock absorber is a damping force. Force specific performance is known to play a very important role.

The damping force of this shock absorber is controlled by a three-step step motor. The driving method of this step motor is driven in order of a front motor, a rear front motor, and a rear rear motor.

The reason why the step motors should be driven in the above-described order is that if the step motors are driven simultaneously, the current consumption is temporarily amplified, so that the power consumption is increased, and then the front motor, followed by the rear front motor and the rear motor. While driving at low power, the damping force mode state is displayed through the lamp S4 provided in the driver's seat. Here, the lamp S4 is a hard lamp and a soft lamp is turned on according to the hard mode and the soft mode as shown in Table 1, respectively.

Hard lamp Soft lamp Hard mode On Off Medium mode Off Off Soft mode Off On

As described above, in the existing system configuration, only the damping force mode state is displayed through the lamp S4. However, the shock absorber driving module does not display the fault diagnosis result generated at the time of disconnection / shortage to the driver. Instability of the vehicle caused by being unbalanced, and in particular in the case of a short circuit, there is a problem that the electric wire burns due to overcurrent, causing the vehicle fire.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object thereof is to detect a failure of a drive module for driving a shock-over, and to inform a driver of a diagnosis result of a fault generated when a drive module is disconnected / shorted. The present invention provides a method for diagnosing a failure of a sourcing driver.

In the present invention for achieving the above object, when the driver arbitrarily selects any one of the hard / medium / soft mode according to the state of the road surface while driving the vehicle, the microcomputer determines the voltage corresponding to the selected mode. A method of controlling each of the driving modules 150, 160, and 170 to operate the shock-absorber in an arbitrary mode, the method comprising: an operating voltage (5 V) for receiving an ignition (IGN) voltage of a vehicle to operate a microcomputer; Lowering to) to provide it to the microcomputer; After the microcomputer is operated by the operating voltage, respectively controlling the driving modules 150, 160, 170 according to a voltage corresponding to a selected mode provided from the mode switch; When the voltage state provided to the driving module 150, 160, 170 is disconnected / shorted, it is determined that the disconnected / shorted signal is provided to the lamp driving module and the driving module 150, 160, 170 is provided. Controlling to stop; And controlling the lamp so as to correspond to the disconnection / short signal generated at the time of disconnection / short circuit.

Hereinafter, with reference to the accompanying drawings will be described in detail an embodiment according to the present invention.                     

Referring to FIG. 2, a block diagram illustrating a failure diagnosis method of a shock absorber driving unit according to the present invention includes a driver failure diagnosis system 100.

The driver failure diagnosis system 100 includes a regulator 110, an IGN monitoring circuit 120, a switch input unit 130, a microcomputer 140, a front drive module 150, and a rear-front drive module ( 160, a rear-rear drive module 170, and a lamp drive module 180.

The regulator 110 receives the ignition (IGN) voltage of the vehicle and lowers the voltage to an arbitrary voltage (about 5V) for operating the microcomputer 140 to provide it to the microcomputer 140.

The ignition (IGN) monitoring circuit 120 provides the microcomputer 140 with a divided voltage divided by a voltage that can be recognized by the microcomputer 140 while monitoring the IGN voltage of the vehicle.

The switch input unit 130 is operated according to the mode switching signal selected by the driver among the hard mode, the medium mode, and the soft mode provided from the mode switch S5, thereby providing an arbitrary port ( port) to provide a voltage corresponding to each mode to the microcomputer 140.

The microcomputer 140 is operated by any voltage provided from the regulator 110, and then the front driving module 150 and the rear-front driving according to the voltage corresponding to each mode provided from the switch input unit 130. The module 160 and the rear-rear drive module 170 are controlled, respectively.                     

That is, when the voltage corresponding to the hard mode is provided from the switch input unit 130, the microcomputer 140 may include the front driving module 150, the rear-front driving module 160, and the rear-rear driving module 170. The hard mode voltages are provided to the modules 150, 160, and 170, respectively, so that they can operate as the hard modes. In this case, in the medium mode, each of the modules 150, 160, and 170 may be provided with a medium voltage for operating as a medium mode. In the soft mode, each of the modules may have a soft voltage for operating as a soft mode. 150, 160, 170). In this case, the microcomputer 140 provides the lamp driving module 180 with a mode signal corresponding to the mode voltage provided through the modules 150, 160, and 170, respectively.

In addition, after receiving the divided voltage provided from the IGN monitoring circuit 120, the microcomputer 140 determines whether the current ignition (IGN) voltage is normal and the front driving module 150 and the rear-front driving module 160. ) And when the voltage state provided to the rear-rear drive module 170 is disconnected / shorted as shown in FIGS. 3B to 3E, the corresponding disconnection / shorted signal is provided to the lamp driving module 180.

The front drive module 150, the rear-front drive module 160 and the rear-rear drive module 170 are provided in hard mode, medium mode and soft mode provided from the microcomputer 140. During soft mode, each of the shock absorbers S1, S2, and S3 is driven according to the mode voltage selected by the driver.

The lamp driving module 180 is described in Table 1 according to the mode voltage selected by the driver among the hard mode, the medium mode, and the soft mode provided from the microcomputer 140. As shown in the drawing, the lamp S4 is controlled to be displayed.

In addition, the lamp driving module 180 may control the hard lamp and the soft lamp according to the disconnection / short signal generated when disconnection / short circuit occurs in any one of the driving modules 150, 160, and 170 provided from the microcomputer 140. The lamp S4 is controlled to be turned on.

With reference to the flowchart of FIG. 4, the fault diagnosis method of the shock absorber drive part which concerns on this invention is demonstrated in detail based on the above-mentioned structure.

When the lamp S4 and the mode switch S5 are installed in an arbitrary position in the vehicle, the driver selects the mode switch S5 according to the state of the road surface while driving, that is, the mode switch when the state of the road surface is good. Select (S5) as the hard mode, if the road condition is not very good, select the mode switch (S5) to soft mode, if the road condition is in the middle, select the mode switch (S5) to medium mode will be.

Among these, when the driver selects the mode switch S5 as the soft mode due to the bad road condition while driving, the switch input unit 130 is operated according to the soft mode switching signal provided from the mode switch S5. Assume the description of the present invention as providing a voltage corresponding to the soft mode to the microcomputer 140 through a port.

First, the ignition (IGN) voltage is provided to the regulator 110 at the same time as the vehicle is started (step 400).                     

The regulator 110 receives the ignition (IGN) voltage of the vehicle and lowers the operating voltage (5V) to operate the microcomputer 140 to provide it to the microcomputer 140 (step 401).

At this time, the ignition (IGN) monitoring circuit 120 monitors the ignition IGN voltage of the vehicle and distributes the voltage to a voltage that the microcomputer 140 can recognize. And connect the divided voltage provided between the two resistors to the microcomputer 140 (step 402).

The microcomputer 140 is operated by any voltage provided from the regulator 110 and then the front drive module 150 and the rear-front drive according to the voltage corresponding to the soft mode provided from the switch input unit 130. The module 160 and the rear-rear drive module 170 are controlled to operate in the soft mode, respectively (step 403).

At the same time, the microcomputer 140 provides the lamp driving module 180 with a mode voltage corresponding to the mode voltages provided through the modules 150, 160, and 170, respectively. Control to turn on (step 404).

At this time, the microcomputer 140 receives the divided voltage provided from the IGN monitoring circuit 120, and then determines whether the current IGN voltage is normal, and the front drive module 150 and the rear-front drive module 160. ) And the voltage state provided to the rear-rear driving module 170 when the rear-front 1EA is disconnected as shown in FIG. 3B, when the rear-front 2EA is disconnected as shown in FIG. 3C, when the rear-rear shorted as shown in FIG. 3D, and FIG. 3E. As in the case of the front 1EA disconnection and the rear-front short-circuit, it is determined whether the voltage provided to the driving modules 150, 160, 170 is disconnected / shorted (step 405).

In the determination step 405, in the case of disconnection / short circuit, the disconnection / short signal corresponding thereto is provided to the lamp driving module 180 and the driving module 150, 160, 170 is stopped at the same time (step 406). .

If it is not disconnected / shorted in the determination step 405, the drive module 150, 160, 170 is continuously operated as shown in FIG. 3A, and the drive module 150, 160, 170 is continuously controlled (step 407).

The lamp driving module 180 includes a hard lamp and a soft lamp according to a disconnection / short signal generated when disconnection / short circuit occurs in any one of the driving modules 150, 160, and 170 provided from the microcomputer 140. The lamp S4 is controlled to be all turned on (step 408).

Accordingly, the driver can grasp the state of the mode switch S5 according to the lighting of the lamp S4, and in particular, the driver can visually determine whether any one of the driving modules 150, 160, 170 has a disconnection / short circuit. It is to make sure that the operation always operates normally.

As described above, the present invention monitors the failure of the drive module for driving the shock-over, and informs the driver of the fault diagnosis result generated when the drive module is disconnected / short-circuit during operation. There is an effect that can be determined in real time.

Claims (5)

If the driver arbitrarily selects one of the hard, medium, and soft modes according to the road condition while the driver is driving the vehicle, the microcomputer may select a voltage corresponding to the selected mode in each of the driving modules 150, 160, and 170. To control the shock-over in any mode, Receiving an IGN voltage of the vehicle and lowering the voltage to an operating voltage (5V) for operating the microcomputer; After the microcomputer is operated by the operating voltage, respectively controlling the driving module (150, 160, 170) according to a voltage corresponding to a selected arbitrary mode provided from the mode switch; When the voltage state provided to the driving module 150, 160, 170 is disconnected / shorted, it is determined that the disconnected / shorted signal is provided to the lamp driving module and the driving module 150, 160, Controlling to stop 170; Controlling a lamp to correspond to a disconnection / short circuit signal generated when the disconnection / short circuit occurs; The ignition voltage of the vehicle is monitored by an IGN monitoring circuit, and divides the voltage into a voltage that can be recognized by the microcomputer to provide the divided voltage to the microcomputer. Fault diagnosis method of overdrive part. delete The method of claim 1, The disconnection / short is at the time of the rear-front 1EA disconnection, the rear-front 2EA disconnection, the rear-rear short circuit, the front 1EA disconnection and the rear-front short circuit. The method of claim 1, If it is not disconnection / short in the determining step, the drive module (150, 160, 170) characterized in that the control to continue to operate the shock absorber driver failure diagnosis method. The method of claim 1, The lamp includes a hard lamp and a soft lamp, and operates in a hard mode when the hard lamp is on, operates in a soft mode when the soft lamp is on, and the hard lamp and a soft lamp. Is in the off mode when all of the (off), and when the hard lamp and the soft lamp are both on (on), characterized in that the disconnection / short-circuit state fault diagnosis method.

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