CN112606821B - Intelligent processing system for coping with sudden tire burst of automobile and control method thereof - Google Patents

Intelligent processing system for coping with sudden tire burst of automobile and control method thereof Download PDF

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Publication number
CN112606821B
CN112606821B CN202110019132.9A CN202110019132A CN112606821B CN 112606821 B CN112606821 B CN 112606821B CN 202110019132 A CN202110019132 A CN 202110019132A CN 112606821 B CN112606821 B CN 112606821B
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steering wheel
intelligent
brake
valve
automobile
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CN112606821A (en
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孙后环
杨谋存
陈舟
南文光
任一凡
刘陈
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Nanjing Tech University
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Nanjing Tech University
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/20—Conjoint control of vehicle sub-units of different type or different function including control of steering systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
    • B60C23/02—Signalling devices actuated by tyre pressure
    • B60C23/04—Signalling devices actuated by tyre pressure mounted on the wheel or tyre
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
    • B60W10/06—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of combustion engines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/18—Conjoint control of vehicle sub-units of different type or different function including control of braking systems
    • B60W10/184—Conjoint control of vehicle sub-units of different type or different function including control of braking systems with wheel brakes
    • B60W10/188—Conjoint control of vehicle sub-units of different type or different function including control of braking systems with wheel brakes hydraulic brakes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
    • B60W30/02—Control of vehicle driving stability
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2510/00—Input parameters relating to a particular sub-units
    • B60W2510/06—Combustion engines, Gas turbines
    • B60W2510/0614—Position of fuel or air injector
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2510/00—Input parameters relating to a particular sub-units
    • B60W2510/10—Change speed gearings
    • B60W2510/104—Output speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2510/00—Input parameters relating to a particular sub-units
    • B60W2510/20—Steering systems
    • B60W2510/202—Steering torque
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2530/00—Input parameters relating to vehicle conditions or values, not covered by groups B60W2510/00 or B60W2520/00
    • B60W2530/20—Tyre data

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Automation & Control Theory (AREA)
  • Regulating Braking Force (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)
  • Steering Control In Accordance With Driving Conditions (AREA)

Abstract

The invention relates to an intelligent processing system and method for coping with sudden tire burst of an automobile, wherein the intelligent processing system comprises an ECU (electronic control unit), a TPMS (tire pressure monitor system) receiver, a steering wheel torque sensor, a throttle valve position sensor, a vehicle speed sensor, an alarm signal lamp, an oil injection control system, an intelligent braking system and an intelligent steering wheel stabilizing system. The ECU controller monitors the tire pressure of four wheels in real time and monitors the change of the tire pressure, and when a certain wheel is detected to be flat, the ECU controller immediately responds as follows: (1) The intelligent steering stabilizing system locks the steering wheel instantly to stabilize the direction, and when the torque of the steering wheel controlled by a driver reaches a set value, the steering wheel is unlocked; (2) The intelligent braking system forces the automobile to brake slowly by starting the point braking mode; (3) And sending a signal to an oil injection control system to enable the oil injection control system to control the oil injector to stop oil injection. The intelligent processing system and the intelligent processing method for dealing with the sudden tire burst of the automobile can effectively avoid traffic accidents caused by the sudden tire burst of the automobile.

Description

Intelligent processing system for coping with sudden tire burst of automobile and control method thereof
Technical Field
The invention relates to the technical field of automobile emergency treatment, in particular to an intelligent treatment system for coping with sudden tire burst of an automobile and a control method thereof.
Background
If a tire burst happens suddenly, the automobile can lose stability instantaneously, and can suddenly turn around or even overturn, and collision with surrounding objects can also happen. No matter a new hand or an old hand encounters an emergency, incorrect operation is easy to occur due to mental stress or untimely response, and when the vehicle is in a light state, the vehicle is in a frightening state, and the vehicle is in a heavy state, so that the person is destroyed. Especially when a flat tire occurs, the situation is more dangerous when the driver is distracted or holds the steering wheel with one hand.
Aiming at the problem of sudden tire burst during the running process of automobiles, it is reported that some manufacturers adopt a method for instantaneously locking a steering wheel to improve the safety. The method for completely locking the steering wheel so as to completely deprive the driver of the steering right of the steering wheel can not adjust the vehicle according to the current situation, and can possibly cause larger traffic accidents. Therefore, there is a need to design a new technical solution to comprehensively solve the problems existing in the prior art.
Disclosure of Invention
The invention aims to provide an intelligent processing system for coping with sudden tire burst of an automobile, which can quickly and efficiently take effective countermeasure when the automobile suddenly bursts, so as to prevent accidents.
In order to solve the technical problems, the invention adopts the following technical scheme:
An intelligent processing system for coping with sudden tire burst of an automobile comprises an ECU controller, a TPMS receiver, a torque sensor, a throttle valve position sensor, a vehicle speed sensor, an oil injection control system, an intelligent steering wheel stabilizing system and an intelligent braking system;
The TPMS receiver receives signals sent by the TPMS transmitter, the torque sensor collects steering wheel torque signals, the throttle position sensor collects throttle position signals, the vehicle speed sensor collects vehicle speed signals, the TPMS receiver, the torque sensor, the throttle position sensor and the vehicle speed sensor respectively transmit the collected data signals to the ECU controller, the tire burst identification judging module of the ECU monitors tire pressures of four wheels in real time and monitors the change condition of the tire pressures, and when a certain wheel is monitored to burst, the following response is immediately made: (1) The intelligent steering stabilizing system locks the steering wheel instantly to stabilize the direction, and when the torque of the steering wheel controlled by the driver reaches a set value, the steering wheel is unlocked and controlled by the driver; (2) The intelligent braking system starts an intelligent point braking mode to enable the automobile to be braked slowly; (3) And sending a signal to the engine ECU to enable the engine ECU to control the fuel injector to stop fuel injection until the signal that the throttle opening gradually increases is detected again after the throttle position sensor is detected to be zeroed, and then the fuel injector normally injects fuel. .
The intelligent processing system for dealing with sudden tire burst of the automobile further comprises a brake piston rod limit switch, an atmospheric pressure sensor and an alarm, wherein the brake piston rod limit switch and the atmospheric pressure sensor respectively transmit a brake piston rod limit signal and an atmospheric pressure signal which are acquired by the brake piston rod limit switch and the atmospheric pressure sensor to an ECU controller, and the ECU controller analyzes the received signals and regulates and controls the alarm to send out alarm signals according to analysis results.
Further, the signals received by the TPMS receiver include a front left tire pressure signal, a front right tire pressure signal, a rear left tire pressure signal, and a rear right tire pressure signal.
The intelligent steering wheel stabilizing system comprises a steering wheel, a steering shaft, a belt brake, a steering gear, a speed regulating valve A, a one-way valve A, an overflow valve, a hydraulic pump, a filter and an oil tank;
The belt brake comprises a brake belt, a brake wheel, a rotating connecting rod, an adjusting ring and a locking hydraulic cylinder, wherein the steering wheel is connected with the brake wheel through a steering shaft and a torque sensor, a steering device is further arranged on the steering shaft, the brake belt is wound on the brake wheel, and the brake belt is connected with the locking hydraulic cylinder through the rotating connecting rod and the adjusting ring; the locking hydraulic cylinder is obliquely arranged, the inside of the locking hydraulic cylinder is divided into a rod cavity and a rodless cavity through a piston, the rod cavity is directly connected with the electromagnetic directional valve A, and the rodless cavity is connected with the electromagnetic directional valve A through a speed regulating valve A and a one-way valve A which are connected in parallel;
The connection of the rod and rodless chambers with the hydraulic pump and the oil tank includes the following two possible ways:
the hydraulic pump is connected with the oil tank through a filter, and the overflow valve is directly connected with the oil tank; the rodless cavity is connected with the oil tank through an electromagnetic reversing valve A; the ECU controller is connected with an electromagnet YW1 of the electromagnetic directional valve A;
the rodless cavity is respectively connected with an overflow valve and a hydraulic pump through an electromagnetic reversing valve A, the hydraulic pump is connected with an oil tank through a filter, and the overflow valve is directly connected with the oil tank; the rod cavity is connected with the oil tank through an electromagnetic reversing valve A; the ECU controller is connected with an electromagnet YW1 of the electromagnetic directional valve A.
The intelligent braking system comprises a braking pedal, a vacuum booster, a flexible stay rope, a braking hydraulic cylinder, a speed regulating valve B, a one-way valve B, an electromagnetic reversing valve B, an overflow valve, a hydraulic pump, a filter and an oil tank, wherein a plunger push rod of the vacuum booster is connected with the braking pedal through a mechanical hinge, the braking hydraulic cylinder is positioned on the back side of the braking pedal, the back side of the braking pedal is connected with a piston rod in the braking hydraulic cylinder through the flexible stay rope, the braking hydraulic cylinder is horizontally arranged, the inside of the braking hydraulic cylinder is divided into a left cavity and a right cavity through a piston, the left cavity is directly connected with the electromagnetic reversing valve B, and the right cavity is connected with the electromagnetic reversing valve B through the speed regulating valve B and the one-way valve B which are connected in parallel;
the connection of the left and right chambers with the hydraulic pump and the oil tank comprises the following two possible ways:
The left cavity is respectively connected with an overflow valve and a hydraulic pump through an electromagnetic reversing valve B, the hydraulic pump is connected with an oil tank through a filter, and the overflow valve is directly connected with the oil tank; the right cavity is connected with the oil tank through an electromagnetic reversing valve B; the ECU controller is connected with an electromagnet YA1 of the electromagnetic directional valve B;
The right cavity is respectively connected with an overflow valve and a hydraulic pump through an electromagnetic reversing valve B, the hydraulic pump is connected with an oil tank through a filter, and the overflow valve is directly connected with the oil tank; the left cavity is connected with the oil tank through an electromagnetic reversing valve B; the ECU controller is connected with an electromagnet YA1 of the electromagnetic directional valve B.
The control method of the intelligent processing system for coping with sudden tire burst of the automobile comprises the following steps:
The method comprises the steps that TPMS transmitters are respectively arranged on four wheels of an automobile, the TPMS transmitters send tire pressure and temperature signals to a TPMS receiver at regular time, and the TPMS transmitters are sent immediately when abnormal conditions are detected, and an ECU (electronic control unit) controller acquires the tire pressure and temperature signals received by the TPMS receiver in real time and monitors the change conditions of the tire pressure and temperature signals; when the ECU controller monitors that a certain wheel has a tire burst, the following response is made:
1) The intelligent steering wheel stabilizing system locks the steering wheel instantaneously, and when the torque of the steering wheel controlled by a driver reaches a set value, the steering wheel is unlocked and controlled by the driver;
2) The ECU controller sends a signal to the oil injection control system to enable the ECU controller to control the oil injector to stop oil injection until the throttle valve position sensor is detected to be zeroed and then the signal that the throttle valve opening gradually increases from zero is detected again, and the oil injector normally injects oil;
3) The intelligent braking system starts a point braking mode to enable the automobile to be braked slowly.
The sampling time is set to 20ms, and when the tire pressure value of a certain tire is detected to be lower than 1.5 local atmospheric pressures twice continuously, the tire burst is judged.
The intelligent processing system for dealing with the sudden tire burst of the automobile, which is provided by the technical scheme, mainly aims at the problem that the prior manufacturers adopt a method for instantaneously locking the steering wheel to improve the safety when the automobile is suddenly burst in the running process, and because the method has the defects in the background technology, the intelligent steering wheel stabilizing system for releasing the locking state of the steering wheel when the torque of a driver operating the steering wheel reaches a set value and the intelligent braking system for timely starting a point braking mode to force the automobile to slowly brake are additionally arranged on the basis of locking the steering wheel; the ECU controller is utilized to receive the acquisition signals of the sensors, analyze and process the received signals, and start the intelligent steering wheel stabilizing system and the intelligent braking system according to analysis results, so that the automobile is subjected to sudden tire burst for safe handling, the defects in the background technology are effectively overcome, and traffic accidents are avoided.
The intelligent steering wheel stabilizing system of the invention installs a steering wheel torque sensor and a belt brake of a locked steering wheel on a steering shaft of the steering wheel, an ECU controller locks the steering wheel at the moment of detecting tire burst, when a driver reacts from the accident of sudden tire burst, the steering right of the steering wheel can be obtained at any time, when the driver consciously operates the steering wheel, the steering wheel torque sensor can generate an output signal, and when the torque reaches a certain value (such as 5 Nm), the locked steering wheel can intelligently and slowly release the locking state and is controlled by the driver; the steering wheel is locked in the early stage, so that the vehicle can be prevented from suddenly turning around or overturning due to tire burst, meanwhile, the steering wheel is prevented from being out of control due to panic of a driver, and when the driver reacts to the steering wheel to be capable of being controlled autonomously, the intelligent steering wheel stabilizing system can restore the control right of the driver to the steering wheel, and the operation flexibility is ensured.
The intelligent braking system of the invention realizes an intelligent point braking mode by utilizing a brake pedal, a vacuum booster, a flexible inhaul cable, a brake hydraulic cylinder, a speed regulating valve B, a one-way valve B, an electromagnetic reversing valve B, an overflow valve, a hydraulic pump, a filter and an oil tank, has the effect that the driver slowly and lightly steps on the brake and then quickly releases the brake pedal, and repeats the actions every several seconds (the accurate time is needed to be obtained through debugging), thereby slowly braking the automobile. The intelligent processing system for dealing with the sudden tire burst of the automobile can perform safer and more intelligent processing on the sudden tire burst, effectively avoid the defect of simply locking the steering wheel and greatly reduce the occurrence rate of traffic accidents.
Finally, the invention also discloses a control method of the intelligent processing system for dealing with the sudden tire burst of the automobile, when the ECU controller monitors that the tire burst occurs on a certain wheel, the intelligent steering wheel stabilizing system locks the steering wheel, and when the torque of the steering wheel controlled by a driver reaches a set value, the steering wheel is unlocked; the ECU controller sends a signal to the oil injection control system to enable the ECU controller to control the oil injector to stop oil injection until the throttle valve position sensor is detected to be zeroed and then the signal that the throttle valve opening gradually increases from zero is detected again, and the oil injector normally injects oil; the intelligent braking system starts a point braking mode to finish the slow braking of the automobile; the handling process of the sudden tire burst of the automobile is finished, the steering wheel can be well locked and slowly braked, the steering wheel can be controlled in a recovery mode according to the situation that the steering wheel is controlled by a driver, and the occurrence rate of traffic accidents after tire burst is effectively reduced.
Drawings
FIG. 1 is a circuit diagram of an electrical interface control of an intelligent processing system for handling sudden tire burst of an automobile according to the present invention;
FIG. 2 is a schematic diagram of the intelligent steering wheel stabilization system according to the present invention;
fig. 3 is a schematic structural diagram of the intelligent braking system according to the present invention.
In the figure: 1. a steering wheel; 2. a steering shaft; 3. a torque sensor; 4. a brake band; 5. a brake wheel; 6. rotating the connecting rod; 7. an adjusting ring; 8. locking the hydraulic cylinder; 9. a diverter; 10. a speed regulating valve A;11. a one-way valve A;12. a two-position four-way electromagnetic reversing valve A;13. an overflow valve; 14. a hydraulic pump; 15. a filter; 16. an oil tank; 17. a brake pedal; 18. a vacuum booster; 19. a flexible cable; 20. a direction-changing fixed pulley; 21. a brake hydraulic cylinder; 22. a piston rod stop iron; 23. braking the piston rod limit switch; 24. a speed regulating valve B;25. a one-way valve B;26. two-position four-way electromagnetic reversing valve B.
Detailed Description
The present invention will be specifically described with reference to examples below in order to make the objects and advantages of the present invention more apparent. It should be understood that the following text is intended to describe only one or more specific embodiments of the invention and does not limit the scope of the invention strictly as claimed.
Example 1
1-3, The technical scheme adopted by the embodiment is that the intelligent processing system for dealing with sudden tire burst of an automobile comprises an ECU controller, a TPMS (tire pressure monitoring system) receiver, a torque sensor, a throttle valve position sensor, a vehicle speed sensor, an oil injection control system (comprising an engine ECU and an oil injector), an intelligent steering wheel stabilizing system and an intelligent braking system, wherein the TPMS receiver receives signals sent by the TPMS transmitter (comprising a left front tire pressure signal ZQL, a right front tire pressure signal YQL, a left rear tire pressure signal ZHL and a right rear tire pressure signal YHL), the torque sensor acquires a steering wheel torque signal ZJ, the throttle valve position sensor acquires a throttle valve position signal WZ and a vehicle speed sensor acquires a vehicle speed signal CHS, then the TPMS receiver, the torque sensor, the throttle valve position sensor and the vehicle speed sensor respectively transmit data signals acquired by the TPMS receiver, the torque sensor, the throttle valve position sensor and the vehicle speed sensor to the ECU controller, the ECU controller analyzes and processes the received data signals and then sends an engine fuel cut-off control signal DY to the oil injection control system according to analysis results, and an intelligent steering wheel stabilizing signal YW and an intelligent braking system to the intelligent braking system; the fuel injection control system receives the signal and then controls the fuel injector to stop fuel injection, the intelligent steering wheel stabilizing system receives the signal and then locks the steering wheel of the automobile in direction, and when the torque of the steering wheel controlled by a driver reaches a set value, the steering wheel is in an unlocking state, and the intelligent braking system starts a spot braking mode to force the automobile to brake slowly after receiving the signal.
As shown in fig. 1, the intelligent processing system for handling sudden tire burst of the automobile further comprises a brake piston rod limit switch, an atmospheric pressure sensor and an alarm; the brake piston rod limit switch and the atmospheric pressure sensor respectively transmit the brake piston rod limit signal ZDXW and the atmospheric pressure signal DQY which are acquired by the brake piston rod limit switch and the atmospheric pressure sensor to the ECU controller, and the ECU controller analyzes the signals received by the brake piston rod limit switch and the atmospheric pressure sensor and regulates and controls the alarm lamp JBD to send out alarm signals according to the analysis result.
As shown in fig. 2, the intelligent steering wheel stabilization system includes a steering wheel 1, a steering shaft 2, a band brake, a steering 9, a speed valve a10, a check valve a11, an overflow valve 13, a hydraulic pump 14, a filter 15, and an oil tank 16; the belt brake comprises a brake belt 4, a brake wheel 5, a rotary connecting rod 6, an adjusting ring 7 with a locking screw and a locking hydraulic cylinder 8, wherein the steering wheel 1 is connected with the brake wheel 5 through a steering shaft 2 and a torque sensor 3, the steering shaft 2 is also provided with a steering gear 9, the brake belt 4 is arranged on the brake wheel 5 in a tilting way, the locking hydraulic cylinder 8 is divided into a rod cavity and a rodless cavity by a piston, the brake belt 4 is connected with the rod cavity of the locking hydraulic cylinder 8 through the rotary connecting rod 6 and the adjusting ring 7, the rod cavity is directly connected with a two-position four-way electromagnetic directional valve A12, the rodless cavity is connected with the two-position four-way electromagnetic directional valve A12 through a speed regulating valve A10 and a one-way valve A11 which are connected in parallel (if the rod cavity of the locking hydraulic cylinder is communicated with a hydraulic pump 14 and an overflow valve A12, the rod cavity is communicated with an oil tank 16, otherwise, if the rod cavity is communicated with the hydraulic pump 14 and the overflow valve 13, the rod cavity is communicated with the oil tank 16, the hydraulic pump 14 is directly connected with the oil tank 16 through a filter 15; the ECU controller is connected with an electromagnet YW1 of the electromagnetic directional valve A12.
As shown in fig. 3, the intelligent braking system comprises a brake pedal 17, a vacuum booster 18, a flexible inhaul cable 19, a brake hydraulic cylinder 21, a speed regulating valve B24, a one-way valve B25, a two-position four-way electromagnetic reversing valve B26, an overflow valve 13, a hydraulic pump 14, a filter 15 and an oil tank 16, wherein a plunger push rod of the vacuum booster 18 is connected with the brake pedal 17 through a mechanical hinge, the brake hydraulic cylinder 21 is positioned on the back side of the brake pedal 17, the back side of the brake pedal 17 is connected with a piston rod in the brake hydraulic cylinder 21 through the flexible inhaul cable 19, a piston rod stop iron 22 and a brake piston rod limit switch 23 are further arranged between the piston rod of the brake hydraulic cylinder 21 and the end part of the flexible inhaul cable, the brake piston rod limit switch 23 is connected with an ECU controller, a brake piston rod limit signal ZDXW is sent to the ECU controller, and the piston rod stop iron is used for limiting the position of the piston rod. The left cavity of the brake hydraulic cylinder 21 is horizontally arranged and is directly connected with a two-position four-way electromagnetic directional valve B26, the right cavity of the brake hydraulic cylinder is connected with the two-position four-way electromagnetic directional valve B26 through a speed regulating valve B24 and a one-way valve B25 which are connected in parallel (if the left cavity of the brake hydraulic cylinder is communicated with a hydraulic pump 14 and an overflow valve 13 through the electromagnetic directional valve B26, the right cavity of the brake hydraulic cylinder is communicated with an oil tank 16, otherwise, if the right cavity of the brake hydraulic cylinder is communicated with the hydraulic pump 14 and the overflow valve 13, the left cavity of the brake hydraulic cylinder is communicated with the oil tank 16, the hydraulic pump 14 is connected with the oil tank 16 through a filter 15, and the overflow valve 13 is directly connected with the oil tank 16); the ECU controller is connected to the electromagnet YA1 of the electromagnetic directional valve B26.
The intelligent processing system for dealing with sudden tire burst of the automobile of the embodiment immediately responds to the following when the ECU controller monitors that a certain wheel is burst: (1) The intelligent steering wheel stabilizing system locks the steering wheel instantly to stabilize the direction, and the driver still has the right to control the steering wheel at any time; (2) Sending a signal to an engine ECU (electronic control unit) to control an oil injector to stop oil injection until detecting a signal that the throttle opening gradually increases after the throttle position sensor is zeroed, and enabling the oil injector to normally inject oil; (3) The intelligent braking system starts a point braking mode to enable the automobile to brake slowly. The intelligent braking system and the braking steering wheel stabilizing system are combined, and effective treatment measures can be quickly and efficiently adopted when the automobile suddenly bursts, so that the occurrence rate of traffic accidents is reduced.
Example 2
The present embodiment describes a control method of the intelligent processing system for handling sudden tire burst of the automobile according to embodiment 1:
Firstly, an automobile tire pressure monitoring system belongs to the mature prior art, and has become the standard configuration of most automobiles, and saloons which are newly delivered and required to be configured in China in 2019 are required to be configured with the tire pressure monitoring system. In the running process of the automobile, the ECU controller adopted in the embodiment acquires the tire pressure values of four wheels from the TPMS receiver in real time and monitors the change condition of the tire pressure values, and the sampling time can be set to be 20ms because the time of tire burst is very short and is generally less than 100 ms; the TPMS transmitters mounted on the 4 wheels send information such as tire pressure and temperature to the TPMS receiver (wireless) at regular time (1 minute for reducing power consumption), and when abnormal conditions (such as too high tire pressure, too low tire pressure or too high tire temperature) are detected, the information is sent immediately, and if the originally configured TPMS system of the vehicle does not meet the requirements, the information needs to be replaced. Under the condition of no tire burst, the monitored value is a normal tire pressure value (2.3-2.5 barometric pressures), and when the tire pressure value of a certain tire is continuously monitored twice and is lower than 1.5 local barometric pressures, the tire burst is judged.
When the ECU controller monitors that a certain wheel is burst, the following response is made:
1) The intelligent steering wheel stabilizing system locks the steering wheel, and when the torque of the steering wheel controlled by a driver reaches a set value, the steering wheel is unlocked;
When the ECU controller detects that a certain wheel is punctured, the steering wheel is locked at the moment of tire burst, but the steering right of the steering wheel is not completely deprived by a driver, the steering right of the steering wheel can be obtained at any time after the driver reacts from the accident of sudden tire burst, and when the driver intentionally operates the steering wheel, the steering wheel torque sensor can generate an output signal, and when the torque reaches a certain value (5 Nm in the embodiment), the locked steering wheel slowly releases the locking state and is controlled by the driver, so that the slowly released braking state is the condition of preventing the occurrence of hit steering wheels, the action principle is that the steering wheel torque sensor and the belt brake for locking the steering wheel are arranged on a steering shaft of the steering wheel, and the steering wheel torque sensor and the vehicle adopting an electric power steering system (EPAS) can only need to be additionally arranged because the steering wheel torque sensor is already arranged.
In the prior art, the steering wheel is completely locked, so that the steering wheel control right of a driver is completely deprived, and the method has certain defects. For example, aiming at the problem of sudden tire burst in the process of straight running or turning, the steering wheel locked instantly can only drive or turn the automobile along the original lane, but the steering wheel locked by the invention can prevent the automobile from suddenly turning around or overturning due to tire burst at first, so that the automobile can stably drive for a period of time, and the steering wheel can gain a lot of reaction time for a driver, even if the driver is distracted and panicked before and after tire burst, the steering wheel can be controlled by the driver after the steering wheel is controlled, and the driver can automatically adjust according to the situation of the driver; aiming at the problem that the vehicle is about to turn or the vehicle is about to enter a straight road from a curve and burst, the driver is in a state of being fully focused and holding the steering wheel with both hands for driving, so that the driver is neither likely nor distracted, and the vehicle speed in the situation is generally not too high, so that the reaction time left for the driver is enough under normal conditions; however, for the automobile without the invention, the steering wheel can lose stability instantly after the tire burst happens suddenly, the steering wheel can be out of hand and out of control due to the panic of a driver, the automobile can suddenly turn around or even overturn, and the automobile can collide with other surrounding objects or vehicles, so that serious traffic accidents can be caused. However, the situation of the automobile using the invention is completely different, and the locked steering wheel at least can prevent the automobile from suddenly turning around or overturning due to tire burst, and also can prevent the driver from getting out of hand and out of control due to panic, thus the automobile can gain a lot of reaction time for the driver, so that the driver is completely possible to obtain the control right of the steering wheel in time and control the automobile to change the running direction in time. Therefore, in both of the above-described most adverse cases, the vehicle using the present invention is much safer than the vehicle without the present invention.
Referring to fig. 2, under the normal running condition of the automobile, the ECU controller has no output signal, the electromagnet YW1 of the two-position four-way electromagnetic directional valve a12 is not powered, the two-position four-way electromagnetic directional valve a12 works in the right position, the rodless cavity of the locking hydraulic cylinder slowly feeds oil through the speed regulating valve a10, the piston rod is slowly pushed to the limit position, and the steering wheel can freely rotate; when the automobile suddenly bursts, the ECU controller outputs a direction stabilizing signal YW, an electromagnet YW1 of a two-position four-way electromagnetic directional valve A12 in the intelligent steering wheel stabilizing system is powered on, the two-position four-way electromagnetic directional valve A works in the left position, a rod cavity of a locking hydraulic cylinder is used for quickly feeding oil, a piston rod is pushed to quickly move, and a brake belt 4 is tensioned through a rotating connecting rod 6, so that the steering wheel 1 is quickly locked; when the driver reacts from the accident of sudden tire burst and consciously operates the steering wheel, the steering wheel torque sensor generates an output signal, and when the torque reaches a certain value (set to 5 Nm), the ECU controller removes the direction stabilizing signal YW, the electromagnet YW1 of the two-position four-way electromagnetic reversing valve A12 is powered off, the right-position four-way electromagnetic reversing valve A works, the rodless cavity of the locking hydraulic cylinder slowly feeds oil through the speed regulating valve A, the piston rod is slowly pushed, the locked steering wheel slowly releases the locking state and is controlled by the driver, and the slow unlocking is adopted to prevent the condition of hit directions due to the operation inertia of the driver.
2) The ECU controller sends a signal to an engine ECU of an oil injection control system (comprising an engine ECU and an oil injector) to control the oil injector to stop oil injection, so that the operation is that a driver is likely to forget to release an accelerator due to tension after sudden tire burst, and the oil injector does not inject oil no matter whether the driver steps on an accelerator pedal or not, so that the vehicle speed is effectively reduced; after the throttle position sensor is detected to return to zero, the normal oil injection function can be recovered after the driver completely releases the accelerator pedal, and after that, if the throttle opening is detected to gradually become larger from zero, the driver starts to normally control the accelerator, and the oil injector can normally inject oil;
3) The intelligent braking system starts a point braking mode to finish the slow braking of the automobile.
When the ECU controller detects that a certain wheel is burst, the engine is cut off and the steering wheel is stabilized, meanwhile, the intelligent braking system is automatically started, and the intelligent point braking mode is started, so that the effect is as if a driver slowly and lightly steps on a brake and then quickly releases a brake pedal, and the actions are repeated every several seconds (the accurate time is needed to be obtained through debugging), so that the automobile is slowly braked. In addition, when the throttle position sensor is reset to zero and a signal that the throttle opening gradually increases from zero is detected, the driver can normally control the throttle and the brake, the ECU controller can remove the intelligent brake signal, the intelligent brake system stops working, or when the speed of the vehicle is lower than 5 km per hour, the intelligent brake system also stops working automatically.
The action principle is shown in fig. 3, under the normal running condition of an automobile, an ECU (electronic control unit) does not output signals, an electromagnet YA1 of a two-position four-way electromagnetic directional valve B26 is not electrified, the right position of the two-position four-way electromagnetic directional valve B works, the left side of a brake hydraulic cylinder is fed with oil, a piston rod is pushed to the rightmost end, the piston rod is connected with a brake pedal through a flexible inhaul cable 19, and the flexible inhaul cable 19 is adjusted to be in a proper tensioning state but not in a tensioning state under the condition that the brake pedal 17 is not stepped; since the flexible cable is used and there is no tension under normal conditions, it does not affect the braking operation, and it does not affect the piston rod nor receive any additional retarding force when the brake pedal 17 is depressed, and is less likely to be stuck, thus allowing normal braking. When the automobile suddenly bursts, the ECU controller outputs a braking signal YA, an electromagnet YA1 of a two-position four-way electromagnetic directional valve B26 in an intelligent braking system is powered on, the two-position four-way electromagnetic directional valve B26 works leftwards, a right cavity of a brake hydraulic cylinder slowly advances oil through a speed regulating valve B24, a piston rod is pushed to slowly move leftwards, a brake pedal 17 is pulled to slowly rotate clockwise through a flexible inhaul cable 19, after a piston rod stop iron 22 on the piston rod touches a brake piston rod limit switch 23 (the specific installation position of the brake piston rod stop iron is obtained through debugging), the brake signal YA is removed by the ECU controller after the brake signal YA lasts for 1 second, the electromagnet YA1 of the two-position four-way electromagnetic directional valve B26 is powered off, the right position of the two-position four-way electromagnetic directional valve B works, the left cavity of the brake hydraulic cylinder rapidly advances oil, and the piston rod is rapidly pushed to the rightmost end. This step is the same as the driver slowly lightly stepping on the brake pedal and then quickly releasing it to achieve a inching braking effect. After 5 seconds, the ECU controller outputs a braking signal YA again, the inching braking process completes a working cycle again, the signal that the throttle opening gradually increases from zero is detected after the throttle position sensor returns to zero, or when the speed of the vehicle is lower than 5 km per hour, the ECU controller completely removes the braking signal YA, and the intelligent braking system completely stops working.
Since the automobile is not too dangerous even if a tire burst occurs when the automobile is at rest or in a state of low speed (such as below 5 km/h), the invention does not respond to the tire burst under the condition, and the ECU controller monitors the speed of the automobile.
While the embodiments of the present invention have been described in detail with reference to the drawings, the present invention is not limited to the above embodiments, and it will be apparent to those skilled in the art that various equivalent changes and substitutions can be made therein without departing from the principles of the present invention, and such equivalent changes and substitutions should also be considered to be within the scope of the present invention.

Claims (5)

1. An intelligent processing system for coping with sudden tire burst of an automobile is characterized in that: the intelligent steering wheel stabilizing system comprises an ECU controller, a TPMS receiver, a torque sensor, a throttle valve position sensor, a vehicle speed sensor, an oil injection control system, an intelligent steering wheel stabilizing system and an intelligent braking system;
The TPMS receiver receives signals sent by the TPMS transmitter, the torque sensor collects steering wheel torque signals, the throttle position sensor collects throttle position signals, the vehicle speed sensor collects vehicle speed signals, the TPMS receiver, the torque sensor, the throttle position sensor and the vehicle speed sensor respectively transmit the collected data signals to the ECU controller, and the ECU controller analyzes and processes the received data signals and then sends an engine fuel-cut control signal to the fuel injection control system, an intelligent direction stabilizing signal to the intelligent steering wheel stabilizing system and an intelligent braking signal to the intelligent braking system according to analysis results; the fuel injection control system receives the signal and then controls the fuel injector to stop fuel injection, the intelligent steering wheel stabilizing system receives the signal and then locks the steering wheel of the automobile in direction, and when the torque of the steering wheel controlled by a driver reaches a set value, the steering wheel is in an unlocking state, and the intelligent braking system starts a spot braking mode to force the automobile to brake after receiving the signal;
The intelligent steering wheel stabilizing system comprises a steering wheel, a steering shaft, a belt brake, a steering gear, an overflow valve, a hydraulic pump, a filter and an oil tank;
The belt brake comprises a brake belt, a brake wheel, a rotating connecting rod, an adjusting ring and a locking hydraulic cylinder, wherein the steering wheel is connected with the brake wheel through a steering shaft and a torque sensor, a steering gear is further arranged on the brake wheel, the brake belt is wound on the brake wheel, and the brake wheel is connected with the locking hydraulic cylinder through the rotating connecting rod and the adjusting ring; the inside of the locking hydraulic cylinder is divided into a rod cavity and a rodless cavity through a piston, the rod cavity is directly connected with the electromagnetic directional valve A, and the rodless cavity is connected with the electromagnetic directional valve A through a speed regulating valve A and a one-way valve A which are connected in parallel;
The connection of the rod cavity and the rodless cavity comprises the following two modes:
the hydraulic pump is connected with the oil tank through a filter, and the overflow valve is directly connected with the oil tank; the rodless cavity is connected with the oil tank through an electromagnetic reversing valve A; the ECU controller is connected with an electromagnet YW1 of the electromagnetic directional valve A;
the rodless cavity is respectively connected with an overflow valve and a hydraulic pump through an electromagnetic reversing valve A, the hydraulic pump is connected with an oil tank through a filter, and the overflow valve is directly connected with the oil tank; the rod cavity is connected with the oil tank through an electromagnetic reversing valve A; the ECU controller is connected with an electromagnet YW1 of the electromagnetic directional valve A;
the intelligent braking system comprises a brake pedal, a vacuum booster, a flexible inhaul cable, a brake hydraulic cylinder, an electromagnetic directional valve B, an overflow valve, a hydraulic pump, a filter and an oil tank, wherein a plunger push rod of the vacuum booster is connected with the brake pedal through a mechanical hinge, the brake hydraulic cylinder is positioned on the back side of the brake pedal, the back side of the brake pedal is connected with a piston rod in the brake hydraulic cylinder through the flexible inhaul cable, the brake hydraulic cylinder is divided into a left cavity and a right cavity through a piston, the left cavity is directly connected with the electromagnetic directional valve B, and the right cavity is connected with the electromagnetic directional valve B through a speed regulating valve B and a one-way valve B which are connected in parallel;
the connection of the left cavity and the right cavity comprises the following two modes:
The left cavity is respectively connected with an overflow valve and a hydraulic pump through an electromagnetic reversing valve B, the hydraulic pump is connected with an oil tank through a filter, and the overflow valve is directly connected with the oil tank; the right cavity is connected with the oil tank through an electromagnetic reversing valve B; the ECU controller is connected with an electromagnet YA1 of the electromagnetic directional valve B;
The right cavity is respectively connected with an overflow valve and a hydraulic pump through an electromagnetic reversing valve B, the hydraulic pump is connected with an oil tank through a filter, and the overflow valve is directly connected with the oil tank; the left cavity is connected with the oil tank through an electromagnetic reversing valve B; the ECU controller is connected with an electromagnet YA1 of the electromagnetic directional valve B.
2. The intelligent processing system for handling sudden tire burst of a vehicle of claim 1, wherein: the intelligent processing system for dealing with sudden tire burst of the automobile further comprises a brake piston rod limit switch, an atmospheric pressure sensor and an alarm, wherein the brake piston rod limit switch and the atmospheric pressure sensor respectively transmit brake piston rod limit signals and atmospheric pressure signals acquired by the brake piston rod limit switch and the atmospheric pressure sensor to an ECU controller, and the ECU controller analyzes the signals received by the ECU controller and regulates and controls the alarm to send out alarm signals according to analysis results.
3. The intelligent processing system for handling sudden tire burst of a vehicle of claim 1, wherein: the signals received by the TPMS receiver include a front left tire pressure signal, a front right tire pressure signal, a rear left tire pressure signal, and a rear right tire pressure signal.
4. A control method of an intelligent processing system for coping with sudden tire burst of an automobile according to claim 1, comprising the steps of:
The method comprises the steps that TPMS transmitters are respectively arranged on four wheels of an automobile, the TPMS transmitters send tire pressure and temperature signals to a TPMS receiver at regular time, and the TPMS transmitters are sent immediately when abnormal conditions are detected, and an ECU (electronic control unit) controller acquires the tire pressure and temperature signals received by the TPMS receiver in real time and monitors the change conditions of the tire pressure and temperature signals; when the ECU controller monitors that a certain wheel is burst, the following response is immediately made:
1) The intelligent steering wheel stabilizing system locks the steering wheel, when a driver controls the steering wheel to enable the torque of the steering wheel to reach a set value, the ECU controller removes a locking signal, a rodless cavity of a locking hydraulic cylinder slowly feeds oil through a speed regulating valve, a piston rod is slowly pushed, and the locked steering wheel slowly releases the locking state to be controlled by the driver;
2) The ECU controller sends a signal to the oil injection control system to enable the ECU controller to control the oil injector to stop oil injection until the throttle valve position sensor is detected to be zeroed and then the signal that the throttle valve opening gradually increases from zero is detected again, and the oil injector normally injects oil;
3) The intelligent braking system starts a point braking mode to finish the braking of the automobile.
5. The control method of the intelligent processing system for handling sudden tire burst of the automobile according to claim 4, wherein: and judging that the tire burst occurs when the tire pressure value of a certain tire is detected to be lower than 1.5 local atmospheric pressures twice in succession.
CN202110019132.9A 2021-01-07 2021-01-07 Intelligent processing system for coping with sudden tire burst of automobile and control method thereof Active CN112606821B (en)

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