KR20000000085A - Automatic - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a rapid oscillation apparatus of a motor vehicle.

Voltage fluctuations such as condition, generator performance, and electrical load

Electrical and physical instability due to a lot of vibration and shock

All.

In this unstable state, the relays are weak against voltage fluctuations and vibrations.

It is used for power supply of electric power to electronic control device that is weak to voltage fluctuation.

Sudden stop or malfunction of the electronic controls

Since there is a problem such as the inability to rake, the present invention provides a semiconductor switch made of electronic

It is used for power supply of fishing gear, and it is used for the second time to stabilize the power at start-up.

Diode to prevent battery and reverse current, time delay circuit to prevent instantaneous interruption of power supply

It is designed to stabilize the power of the electronic control device and prevent malfunctions.

Provide a device to prevent oscillation.

Description

Power switch circuit to prevent car sudden start {AUTOMATIC}

The present invention relates to a vehicle sudden start prevention device in detail in the automobile

Stabilization of the power supply of various electronic controllers

To prevent a sudden start of a vehicle

All.

In general, the electronic control unit of a vehicle uses a microprocessor as a main control unit.

The microprocessor executes the embedded program sequentially from the beginning

Input and output settings of each control device, understanding the status of the surrounding environment, etc.

Take control.

Therefore, the program must be run from the beginning to do so.

Due to the nature of the processor, it is possible to receive the initialization signal at the initialization terminal.

If the microprocessor does not receive the initialization signal, it stops executing the program.

Or abnormal behavior.

At this time, in order to realize the initialization operation simultaneously with the supply of power,

There is a built-in initialization circuit that uses a castle, which rises from zero volts.

Initialization operation is available only at voltage, otherwise initialization operation is not performed.

Do not.

In addition, the power supply circuit of the electronic control apparatus includes a ripple or an unstable power supply.

Use a large capacity capacitor to filter the array or remove noise

There is a smoothing circuit, and when the power is cut off, the power is not immediately zero volts.

Delay by the capacitor discharge time of the active circuit.

Therefore, when the power supply is interrupted, the power supply before the capacitor of the smoothing circuit is completely discharged

When supplied, the initialization circuit is not powered at 0 volts, so the initialization operation

Voltage unstable that the voltage is supplied below the rated voltage of the electronic controller.

The controller will behave abnormally.

However, it is necessary to allow time for the capacitor of the smoothing circuit to be completely discharged.

After supplying power, all previous abnormal symptoms and abnormal conditions disappear and become normal.

Make small.

In addition, the electronic controls related to the rapid start of the automatic transmission vehicle

E.C.U, which is in charge of control, changes the oil pressure by changing the power of the engine

T.C.U, which controls the automatic transmission to the wheels, responsible for the brakes

A.B.S.

These electronic controllers operate in the order of the program and match the input conditions.

The output can be delivered to mechanical devices with solenoid valves, relays, stepping motors, etc.

Control the vehicle's equipment.

In case of abnormal symptom, E.C.U is the engine stop, engine speed increase,

Engine speed is unstable, and T.C.U is torque converter, power transmission of various clutches,

Or the duty ratio is zero when the solenoid valve is operated with the duty ratio of on and off.

The engine power is transferred to the wheels as it is, or at 100 percent.

Symptoms include malfunctioning of the tank.

The phenomenon that occurs due to the complex operation of abnormal symptoms of the electronic controllers is Yen.

Stopping the engine, unstable engine speed, malfunctioning of the brakes,

appear.

In addition, the electronic controllers exchange information with each other and maintain their independence.

In case of failure of other electronic control devices, the program is executed.

In summary, the capacitor discharge time of the smoothing circuit before power on and off

If the power is supplied to the controller, the electronic control circuit will not be initialized.

The output terminals control mechanical devices, causing physical abnormalities.

do.

Mechanism for turning the power off and on in a shorter time than the capacitor discharge time described above

With reference to the accompanying drawings, Figures 1 and 2 for the prior art to find water.

Order.

1 is an electric circuit diagram of a conventional automatic transmission vehicle, Figure 2 is a conventional power supply

Timing diagram.

Looking at the configuration with reference to Figure 1 Battery 1 (B1) for supplying power and

The main relay (RL1), the key switch (S1), and the (+) terminal of the battery 1 (B1)

The starting motor relay (RL2) contacts are connected respectively, and the main relay (RL1)

It supplies power to the control devices E.C.U (U1), T.C.U (U2), and A.B.S (U3).

The smoothing circuit P and the initialization circuit R are built in the electronic control apparatus.

The key switch S1 is connected to the ignition terminal IG of the E.C.U (U1) and the start switch S2.

The start switch S2 is connected to the input terminal of the start relay RL2, and the start relay

The contact point of this RL2 is connected to the starting motor M1.

The main relay control terminal CR of E.C.U (U1) is connected to the input terminal of the main relay RL1.

It is connected.

Looking at the operation of the circuit, the key switch (S1) is input to the ignition terminal (IG) of E.C.U (U1).

When the signal is given, the received E.C.U (U1) relays to the main relay control terminal (CR).

The main signal relay RL1 is operated by outputting an operation signal of 0 volts so that the battery 1 (B1)

Supply power to E.C.U (U1), T.C.U (U2), A.B.S (U3), etc.

Powered E.C.U (U1), T.C.U (U2), A.B.S (U3), etc. have their own smoothing circuit (P)

Charge the capacitor of the microprocessor and the initialization circuit (R) operates to

The specified action starts.

On the other hand, the starter motor relay RL2 is turned on by connecting the starter switch S2.

The starting motor M1 starts and starts the engine.

When the key switch S1 is turned off, the E.C.U (U1) receiving the signal of the key switch S1 is the main subject.

Output the control terminal CR to +12 volts to turn off the main relay RL1.

The relay RL1 supplies power to electronic control devices such as E.C.U (U1), T.C.U (U2), and A.B.S (U3).

Electronic control devices that are disconnected and powered off are

The capacitor starts to discharge the charged electricity and after a period of time the voltage

All.

Referring to Figure 1 it is flat so that the initialization circuit (R) that is the above problem does not operate

It is a device that can cut off and supply power shorter than the discharge time of capacitor of live circuit (P).

There is a main relay RL1.

Looking at the structure and operation of the relay, electricity is applied to the coil to operate as a magnet.

Normally, the contact with the electromagnet is cut off and the current is interrupted.

A contact with a dot and vice versa

There is contact B with falling contact.

In addition, the contact is applied in the opposite direction to the electromagnet so that the soup

The ring is installed.

When the voltage at both ends of the electromagnet coil is gradually raised and supplied, the force of the electromagnet becomes stronger.

As a result, the moving position of the contact point due to the opposition of the force with the spring is changed from contact B to contact A.

Go to.

If the status of the contact according to the voltage change is arranged in order, voltage is applied or B contact is dropped.

Load, move to contact A, connect contact A, and fix contact A.

The contact of A is not connected until the contact A moves.

It is very weak against vibration with the balance of electromagnet force.

Therefore, for relays using contact A, the magnetic force of the electromagnet completely

It should only be used at voltages with a fixed contact point A overpressure.

In addition, if voltage is supplied to both ends of the coil for longer than the specified voltage,

Residual magnetic flux remains between the electromagnet and the contact point

All.

The operation of the battery overvoltage and the relay in the prior art will be described with reference to FIG. 2.

S1 is the state of the key switch (S1), S2 is the state of the start switch (S2), RS is

This is the switch contact state of the main relay RL1.

V1 is the voltage of battery 1 (B1), VR is the contact spring and coil of main relay RL1.

This is the relay's lowest limit voltage that cancels the force of spring and magnetic force when forming magnetic field.

V2 is the power supply voltage of the electronic controller passed through the main relay RL1.

In addition, there is a capacitor discharge time TM of the smoothing circuit for the initialization operation.

The battery voltage V1 is a normal voltage when the key switch S1 is supplied.

As the position S2 starts the starter motor M1, a voltage drop occurs and thus the ripple

Also appears.

The operation of the main relay RL1 according to the charging voltage of the battery B1 and the operation of the electronic controller

The state of power supply is as follows.

In case of A, when the starter motor M1 is started with the charging voltage of the battery B1 being normal.

Even though it does not affect the main relay RL1, it operates normally.

In case of B, when the starter motor M1 is started when the charging voltage of the battery B1 is insufficient.

The battery voltage V1 crosses the minimum limit voltage VR of the main relay RL1.

When the relay RL1 generates the contact RS, the contact time of the contact

Abnormal operation because it is shorter than the liver (TM).

In case of C, when the starter motor M1 is started when the charging voltage of the battery B1 is insufficient.

The battery voltage V1 is lower than the minimum limit voltage VR of the main relay RL1.

Although the time when the relay contact point RS is longer than the capacitor discharge time TM,

Car status input information is lost and it operates abnormally.

In case of D, power generation of generator is less than electric consumption of electric device

In this state, the battery voltage (V1) gradually falls and the main relay (RL1)

If it is adjacent to the minimum limit voltage VR, the main relay (RL1)

Since the contact point (RS) falls off for a shorter time than the capacitor discharge time (TM),

Normal operation

In case of E, the key switch S1 is intentionally or unintentionally turned on or off.

In case of shorter than the denser discharge time (TM), the contact point (RS) of the main relay (RL1) is also condenser discharge.

Abnormal operation because it is shorter than TM.

In case of F, the coil of the main relay RL1 is in a state where the charging voltage of the battery B1 is excessive.

If the key switch (S1) is turned off after using the overcurrent for a long time, the main relay (RL1)

The contact point (RS) dropped and the magnetization of the electromagnet of the relay remained,

This leads to abnormal behavior.

If you look at the above contents compared with the type of car accident,

Accident (B, C), Slowing Accident (D), Restart after Stop (E), Stop

After accident (F case).

Therefore, the mutual mismatch between the battery and relay of the car is the case of B, C, D,

A momentary off or warm state of the keys, either artificially or artificially,

F is the case due to the residual magnetic flux due to the characteristics of the relay.

In order to solve the above problems, the present invention is not suitable for automatic transmission vehicles

Switch circuit that can replace relay and electronic control device through stabilization of power

To induce normal operation of the vehicle

There is a purpose.

1 is an electric circuit diagram of a conventional automatic transmission vehicle.

2 is a power supply timing diagram of the prior art;

3 is a power switch for preventing the sudden start of the vehicle according to an embodiment of the present invention

Schematic diagram of the circuit.

★ Description of symbols for the main parts of the drawings ★

B1, B2: Battery D1: Diode

CR: Relay Control Terminal IG: Ignition Terminal

M1: Starting motor RL1, RL2: Relay

P: Smoothing circuit R: Initialization circuit

S1: Key switch S2: Start switch

TM: Capacitor discharge time TM1: Time delay device

TR1, TR2: Semiconductor Switch U1: E. C. U

U2: T. C. U U3: A. B. S

V1: Voltage of battery 1 V2: Power supply voltage of electronic controllers

VR: Relay minimum limit voltage RS: Main relay contact status

The present invention is a semiconductor to solve the problem of the relay using the principle of the electromagnet

Rechargeable secondary battery and reverse current for switch and start-up stabilization

Leave the diode and cut off the power for the discharge time of the capacitor of the electronic controller.

It is composed of a time delay circuit that enables the initialization circuit to operate.

It is characterized by inducing phase operation.

BRIEF DESCRIPTION OF THE DRAWINGS FIG.

Referring to Figure 3 as follows.

The positive terminal of battery 1 (B1) that supplies power and the power supply of the electronic controller

The diode D1 and the battery B2 are disposed between the semiconductor switches 1 TR1,

The key switch (S1) and the key switch (S1) connected to the (+) terminal of the battery 1 (B1)

The received E.C.U (U1) is connected to the time delay device TM1, and the time delay device TM1 is

Connected to the input terminal of semiconductor switch 2 (TR2) to control semiconductor switch 1 (TR1).

All.

The operation of the circuit is performed by E.C.U (U1) receiving the input of the key switch S1.

The relay control terminal CR gives a 0 volt signal to the time delay device TM1 and receives a signal.

The time delay device TM1 operates the semiconductor switch 2 TR2,

Semiconductor switch 2 (TR2) operates semiconductor switch 1 (TR1).

The semiconductor switch 1 (TR1) receiving the operation signal is connected to the positive terminal of the battery 1 (B1).

The electricity from the iodine is supplied to each electronic controller.

When the voltage of battery 1 (B1) becomes lower than the voltage of battery 2 (B2) at start-up, the diode

Blocks current flow from battery 2 (B2) to battery 1 (B1),

The power supply of the electronic controllers through the semiconductor switch 1 (TR1) is supplied from the battery 2 (B2)

Charge, and after the start-up, the voltage of battery 1 (B1) is higher than the voltage of battery 2 (B2)

If it is charged, return to its original state.

If you turn off the key switch (S1) to cut off the power, E.C.U (U1) receiving the signal

Output +12 volts to relay control terminal (CR) to provide OFF signal to time delay device (TM1).

The time delay device TM1 receiving the off signal is a cone in the smoothing circuit of the control devices.

Turn off the semiconductor switch 2 (TR2) by turning the semiconductor switch 2 (TR1) off for the denser discharge time.

Receive the relay control signal of E.C.U (U1).

Referring to Figure 2 to solve the above action is as follows.

By replacing the relay with the semiconductor switch 1 (TR1) in the prior art B of Figure 2,

The case of D and F is eliminated, and the case of battery 2 (B2) and diode D1 is B, C, and D.

The time delay device TM1 solves the case of E.

As such, the present invention stabilizes the power supply of the electronic control apparatus.

Mechanical control of the vehicle to induce normal operation to prevent sudden starting of the vehicle

It is easy to change existing vehicles by gathering circuits around zone relay circuits.

It has the advantage of contributing to the cost savings caused by the change of business.

Claims (3)

Supply and cut off of the power supply of the electronic control unit (U1, U2, U3) to semiconductor switch 1 (TR1) The auxiliary power supply 10 is installed between the semiconductor switch 1 (TR1) and the battery 1 (B1). E.C.U (U1) switches ON / OFF signals that are relay control signals (CR) Characterizing in controlling the semiconductor switch 1 (TR1) through the time delay circuit 10 Power switch circuit to prevent the car from starting. The auxiliary power supply 10 of claim 1 is charged with a diode D1 that prevents reverse current at start-up. Vehicle start-up protection device, characterized in that consisting of a battery (B2). The method of claim 1, wherein the time delay circuit 10 receives the signal of E.C.U. The time delay device TM1 turns the electronic switch 1 TR1 on and off through the electronic switch 2 TR2. When the off signal is activated, the time delay device (TM1) is activated to By turning off position 2 (TR2), it is possible to prevent the power supply off and on before the capacitor discharge time. Automobile sudden start prevention device, characterized in that.