WO2003026939A1

WO2003026939A1 - An anti-skid apparatus for a vehicle

Info

Publication number: WO2003026939A1
Application number: PCT/CN2001/001588
Authority: WO
Inventors: Jianlin Zhu
Original assignee: Jianlin Zhu
Priority date: 2001-06-08
Filing date: 2001-11-29
Publication date: 2003-04-03
Also published as: CN1390727A; CN100545012C

Abstract

The present invention is directed to an apparatus which includes a controller and actuators for maintaining stability of an automotive vehicle. An acceleration sensor circuit is connected with CPU by a filter and the outputs of CPU are connected with left and right actuator respectively. Furthermore, outputs of CPU are also connected with a digital display, a predictor circuit and an adjusting key is connected to the CPU. To act sensitively and control safely, the apparatus utilizes an acceleration sensor and an intelligentized controller. The said apparatus can adjust sensivity of the controller according to the vehicle's condition.

Description

TECHNICAL FIELD

The invention relates to a device for preventing a vehicle from sliding and overturning when turning. Background technique

If the car is turning too fast during a turn, it may cause the car to skid or overturn. Such accidents often occur during daily transportation, causing loss of life and property. The braking system of the car itself is to brake the four wheels in both directions, which can not achieve the purpose of controlling sideslip and overturning. At present, preventing the sideslip and overturning of the turning elbow of the car is a major issue for the automotive industry at home and abroad. At present, the automatic anti-overturning device of a car is such as the device disclosed in patent number CN94224913. 5. Its controller is a pendulum and its sensitivity is not high. For different cars and different loads, it is not appropriate to adjust the appropriate sensitivity gear. Disclosure of invention

An object of the present invention is to provide an automatic anti-overturning device for an automobile, which can unidirectionally brake when the lateral force of the automobile turns over a given value, keeps the automobile balanced, and adjusts its sensitivity gear according to the condition of the automobile.

The automatic anti-overturning device for a car according to the present invention is composed of a controller and an actuator 抅. The controller 抅 becomes: the acceleration sensor circuit is connected to a central processing unit via a filter, and the output ends of the processor are respectively connected to the left electronic The switch and the right electronic switch, the left and right electronic switches are respectively connected to the left and right actuators; the output end of the processor is also connected to a digital display and a pre-alarm circuit, and the adjustment keys are connected to the processor; Powers various parts of the controller.

The above acceleration sensor circuit is composed of acceleration sensor U ₂ and its peripheral components capacitors C ₁₂ , C ₁₃ , C ₁₅ , and resistor R _4. The output end of the acceleration sensor is connected to a 7Γ shape composed of capacitors C ₉ , C _7, and resistor R i. A filter whose output is connected to a central processing unit 11 ₃ Inputs.

The above-mentioned central processing unit U ₃ is a single-chip computer of model AP89C205, and its output terminals 8 pins and 9 pins are respectively connected to the left electronic switch and the right electronic switch, and its output terminals are 14, 15, 16, 17, 18, 19 The pin is connected to the digital display U ₅ , and its output terminal 11 is connected to the pre-alarm circuit. The adjustment keys and 1: ₂ are connected to the computer's pins 6 and 7 respectively.

The above-mentioned left electronic switch and right electronic switch are symmetrical. The left electronic switch is a resistor R ₁₂ connected to the base of a transistor, and the collector of the transistor is connected to the base of a transistor Q ₂ through a resistor R ₃ . a base electrode connected to the source of the transistor ^, ^ is the transistor emitter is connected via a connector to the actuator left Ju; unable electronic switch which is connected to the resistor R _U base of the transistor, the collector of the transistor ₁₄ via a resistor R connected to the transistor Q ₇ base, the collector of the tube is connected to the base of the transistor, and the emitter of the transistor is connected to the right actuator via a connector.

The above-mentioned pre-alarm circuit is connected to the resistor R ₁₃ by the output terminal 11 of the single-chip computer. The resistor is connected to the base of the transistor, the collector of the transistor is connected to the buzzer SP1, and the emitter of the transistor is connected to the power source.

When the above-mentioned actuator is installed in the oil brake braking system, the power and control signals from the connector J 1 of the controller are connected via wires to the brake master cylinder and the two rear wheel cylinders installed in the braking system. The left and right solenoid valves that control the fuel supply of the two rear wheels are connected to the plungers in the left and right cylinder barrels respectively. One side of the two cylinder barrels has an oil inlet pipe for the brake master cylinder, and the lower end is the through valve. Pump outlet pipe;

When the actuator is installed in the air brake brake system, the power and control signals from the connector J1 of the controller are connected via wires. This device is installed between the brake master cylinder of the brake system and the two rear wheel cylinders. The left and right three-way solenoid valves for the rear wheel supply air. These two solenoid valves are connected at one end to the air outlet pipe of the brake master cylinder and at the other end to the sub-pump respectively. The third ends are respectively connected to the air ducts led by the air storage ducts added by the device. Brief description of the drawings

FIG. 1 is a block diagram of a controller of the present invention; 2 is a circuit schematic diagram of a controller of the present invention;

FIG. 3 is a schematic view of a scuffing of an oil brake actuator according to the present invention;

FIG. 4 is a schematic diagram of the scuffing mechanism of the air brake of the present invention;

The invention is further described below with reference to the drawings. The best way to implement the invention

As shown in FIG. 1, this figure is a block diagram of a controller of an automobile anti-overturn device according to the present invention, and an acceleration sensor circuit is connected to a central processing unit via a filter. The output ends of the processor are respectively connected to the left electronic switch and the right electronic switch, and the left and right electronic switches are respectively connected to the left and right actuators; the output ends of the processor are also connected to a digital display and a pre-alarm circuit, The adjustment button is connected to the above processor, and a regulated power supply supplies power to various parts of the controller.

It can be seen from FIG. 2 that the above acceleration sensor circuit is composed of an acceleration sensor U ₂ and its peripheral component capacitors C ₁₂ , C ₁₃ , C ₁₅ , and a resistor R _{4. The} acceleration sensor is a microelectronic model KX 1 10-50 finished, the output of the acceleration sensor 8 feet to end by the capacitor C _9, shaped filter consisting of C ₇ and a resistor, an output terminal connected to an input terminal of the filter 13, the central processor U3 foot; the acceleration sensor may measure the car The acceleration of the lateral motion of the vehicle is converted into the lateral force on the car by the processing of the central processing unit.

Said central processor ₁₁₃ is a single-chip computer model AP89C205, its output pin 8 are connected to pin 9 and the left and right towards the electronic switches electronic switch. Its output terminal 14, 15, 16, 17, 18, 19 feet to digital display U _5, resistors _{_{_{R 7, R 16, R 18}}} , R 2. _ Digital display ₂₃ as a peripheral circuit; an output end of the central processor ₁₁₃ of the feet to the pre-alarm circuit 11, control buttons, K ₂ connected to the central processor 6, 7 ₃ 11 feet. The above two keys can manually adjust the sensitivity of the controller. The sensitivity of this controller is divided into 0-9 levels. The single chip computer receives the input of the keys and ^ and controls the digital display to display the selected sensitivity level.

Capacitors C ₂ , C ₄ , C ₅ , C ₈ , Cu, C ₁₄ , resistors R ₅ , R _10. Crystal resonator Υ1 · and button κ3 are peripheral circuits of a single-chip computer, where C ₄ and C ₅ form the main oscillator Circuit. Monolithic The computer provides a clock signal, and C ₂ , R ₅ , and ^ form the reset circuit of the single-chip computer. K ₃ is the manual reset button.

The left and right electronic switches are symmetrical. Ju left which becomes electronic switch connected to the resistor R i _2-pole transistor Q _3, the collector of the transistor Q ₃ is connected via a resistor R ₃ of the base of the transistor _2, a collector connected to the base of the transistor Q of the pole tube. Emitter of the transistor is connected via the connector to the actuator Ju left; the group is unable electronic switch resistance R "linking the source of the transistor _06, the transistor collector plate ₀₆ is connected to the base of the transistor Q ₇ via resistor R _14, a transistor having a collector connected to the base electrode of the tube _08, the emitter electrode of the transistor Q ₈ is connected to the right via the actuator connector Ju

The transistors Q ₃ and Q ₆ form a voltage converter, and the transistors <¾, ^^, and Q ₇ and 0 ₈ form an electronic switch to promote the operation of the actuator. The diode DD ₂ protects the electronic switch, and the light-emitting diodes D ₃ and D ₄ instruct the left and right execution actions.

In the above pre-alarm circuit, the output terminal 11 of the single-chip computer is connected to the resistor R ₁₃ , which is connected to the base of the transistor Q ₉ ; the collector of the transistor is connected to the buzzer SP1, and the emitter of the transistor is connected to the power source.

The regulated power supply is a three-terminal regulator U _l with the model number 7805, and its 1 pin is connected to the power supply of the car. 3 feet output 5V voltage, 2 feet are grounded; its role is to convert the 12V or 24V battery voltage used by the car into the 5V DC regulated power source required by the controller.

The actuator 可以 installed in the oil brake braking system can be seen in Figure 3, and the power and control signals from the connector J1 of the controller are connected to the brake master cylinder provided in the braking system via the wire (3) ( 2) The left and right solenoid valves (4) that control the fuel supply of the two rear wheels between the two rear wheel pumps (7). These two solenoid valves are respectively connected to the plungers ( ⁵ ) in the left and right cylinder barrels (6). ). On one side of the two cylinders, there is an oil inlet pipe (10) for the master cylinder. The lower end is the oil outlet pipe (8) of the sub-pump; when the controller sends out a control signal, the left or right solenoid valve ( ⁴ ) working plunger ( ⁵ ) moves downward to seal the oil inlet pipe (10), ( ⁸ ) Oil out (9), increase the oil pressure on one side of the pump and brake in one direction. After correcting the tilt, the control signal is interrupted and the plunger is returned. The oil is returned from the oil inlet pipe (10). (1) is the total Inlet pipe. The actuator installed in the air brake brake system can be seen in Figure 4. The power and control signals from the connector J1 of the controller are connected to the brake master cylinder of this device plus the brake system through the wire (17). (11) The left and right three-way solenoid valves (I ⁴ ) that control the air supply to the two rear wheels between the two rear wheel sub-pumps (15). One end of these two solenoid valves is connected to the air outlet pipe (I ⁶ ) of the brake master cylinder, the other end is connected to the sub-pump (15), and the third end is connected to the air from the air storage pipe (12) provided by the device. Tube (13). When the controller sends out a control signal, the left or right solenoid valve (I ⁴ ) works, seals the air duct (16), and makes the air duct (13) communicate with the sub-pump. ) One-way braking with air intake, after the tilt is corrected, the control signal is interrupted, the solenoid valve is returned, and the sub-pump (is) returns to the wind through the air outlet pipe (I ⁶ ).

When the acceleration sensor is installed, the main induction axis is perpendicular to the forward direction of the car. When a lateral force is received during the car's travel, the acceleration sensor has a signal output, which is filtered and sent to a single-chip computer, which performs A / D on its signal Transform and compare with the set sensitivity level to decide whether to alarm or control the left and right electronic switches to push the actuator 抅. When the car turns to the right at a fast speed, the car tilts to the left, the acceleration sensor outputs a signal, and when the signal sent to the computer reaches a given value of the sensitivity range, its output terminal 8 outputs a control signal. Make the left electronic switch work, push the left actuator 抅 one-way brake, and the buzzer will alarm. Industrial applicability

The advantages of the present invention are as follows: 1. The controller uses an acceleration sensor and intelligent electronic control, which is sensitive and reliable in control; it enables the car to balance forces during cornering and can effectively prevent sideslips and overturns. 2. The sensitivity gears of the controller can be adjusted according to different conditions of the car, such as different sensitive gears for empty cars, trucks, and super-high cars. 3. The single chip computer has a delay function, which can delay 1/4 second. If there is a normal bump during the driving of the car, the instantaneous tilt will not brake. Turns typically exceed a given delay time. 4. Use this device to avoid artificial brake deceleration before turning. Increases vehicle speed, saves fuel for braking, and reduces air pollution. 5. This device automatically controls the one-way brake when cornering, without the driver's operation, and does not affect the work of the braking system of the original car. 6. Easy installation.

Claims

Profit requirements

1. An automatic anti-overturning device for an automobile, which is composed of a controller and an actuator, and is characterized in that: the controller is: an acceleration sensor circuit connected to a central processing unit via a filter, and the output ends of the processors are respectively connected The left electronic switch and the right electronic switch, the left and right electronic switches are connected to the left and right actuators respectively; the output end of the processor is also connected to a digital display and a pre-alarm circuit, and the adjustment keys are connected to the processor; The voltage source supplies power to various parts of the controller.

2. The automatic anti-overturning device of the vehicle according to the claim 1,

It is characterized in that the acceleration sensor circuit is composed of an acceleration sensor U ₂ and its peripheral components capacitors C ₁₂ , C ₁₃ , C ₁₅ , and a resistor R ₄ , and an output terminal of the acceleration sensor is composed of capacitors C ₉ , C ₇ and a resistor. shaped filters, the output of the filter is connected to an input terminal ₁₁₃ of the central processor.

3. The automatic anti-overturning device for a car according to the claim 1,

Wherein: said central processing ₁₁₃ is a single board computer model AP89C205, its output pin 8 are connected to pin 9 and the left and the right electronic switches an electronic switch, an output terminal 14, 15, 16, 17, 18, Pin 19 is connected to the digital display U ₅ , and its output terminal 11 is connected to the pre-alarm circuit. The adjustment keys are connected to pins 6 and 7 of the computer.

4. The automatic anti-overturning device for a car according to claim 1,

It is characterized in that: the left electronic switch and the right electronic switch are symmetrical. The composition of the left electronic switch is: a resistor R _{12 is} connected to the base of the transistor, and a collector of the transistor is connected to the base of the transistor through a resistor R _3. , the base connected to the collector of the transistor (the transistor is ^, ^ is the transistor emitter connector left by the actuator Ju electrode; unable electronic switch which is configured to: R _u resistor connected to base of the transistor, the transistor Q ₆ is set base plate connected to the transistor ₀₇ via a resistor R _14, the collector of the transistor having a base connected tube emitter of transistor is connected to the actuator via the right connector.

5. The auto anti-overturning device according to claim 1, It is characterized in that: the pre-alarm circuit is connected to the resistor R ₁₃ by the output terminal 11 of the single chip computer, the resistor is connected to the base of the transistor, the collector of the transistor is connected to the buzzer SF1, and the emitter of the transistor is connected to the power supply.

6. The automatic anti-overturning device for a car according to the claim 1,

It is characterized in that: when the actuator is installed in the oil brake braking system, the power and control signals from the connector J1 of the controller are connected to the brake master cylinder of the braking system ( 2) The left and right solenoid valves (4) that control the fuel supply of the two rear wheels are controlled between the two rear wheel pumps (7). These two solenoid valves are connected to the plungers ( ⁵ ) in the left and right cylinders (6), respectively. ), There is an oil inlet pipe (10) through the master cylinder on one side of the two cylinders, and the oil outlet pipe (8) through the sub-cylinder is on the lower end.

7. The automatic anti-overturning device for a car according to the claim 1,

It is characterized in that: when the actuator is installed in the air brake braking system, the power supply and control signals from the connector J1 of the controller are connected to the brake master cylinder (11) provided in the braking system via the wire (17). ) And the two rear wheel cylinders (15) control the left and right three-way solenoid valves (I ⁴ ) for the air supply to the two rear wheels, one end of each of these two solenoid valves is connected to the air outlet pipe (I ⁶ ) of the brake master cylinder. The other end is connected to the sub-pump, and the third end is connected to the air pipe (13) led by the air storage pipe (12) added by the device.