CN111660805A - Motor tricycle safety coefficient that traveles - Google Patents

Abstract

The present invention provides a method and system for detecting the running state and the driver state of a three-wheeled motorcycle. The methods include detecting the driver's state information, detecting the driving state information of the three-wheeled motorcycle, and providing the information to the vehicle ECU, so as to judge the current state, and automatically make necessary safety measures to protect the driver and other vehicles on the road. Safety. Avoid accidents and secondary accidents.

Description

A three-wheeled motorcycle driving safety system

technical field

The invention relates to a device for detecting a driver's state by using a sensor and emergency stopping a motor vehicle after an accident occurs, belonging to the field of automatic control.

Background technique

Due to the characteristics of three-wheeled motorcycles, it is very easy for the three-wheeled vehicle to roll, lose stability or even roll over in the event of a collision and scratch accident. The accident may cause the driver to be thrown away by the three-wheeled motorcycle, causing the driver to lose control of the vehicle. After the accident, the driver cannot stop the tricycle immediately, because the vehicle is still in gear at this time, the idling speed of the engine will make the tricycle continue to drive forward, and the steering of the tricycle is not affected by the collision. Control, the three-wheeled motorcycle will be in a forward but uncontrolled situation, which will cause serious harm to the surrounding traffic; a three-wheeled motorcycle collided with a small car in Zibo in 2018, causing the driver and the car to collide. The person in the bucket was thrown out of the driver's seat, and then the three-wheeled motorcycle continued to turn due to idling, causing the driver to be crushed by the unmanned state of the three-wheeled motorcycle.

SUMMARY OF THE INVENTION

An object of the present invention is to solve the above-mentioned problems. The safety system for three-wheeled motorcycles is mainly used to monitor the driving status and driver status when the three-wheeled motorcycle is driving on the road, and automatically and safely stop the use of the vehicle after an accident; including ECU, Hall speed sensor, ultrasonic sensor, collision Sensors, gyroscopes, stepper motors, power switches, and power supplies; due to the characteristics of tricycles, the tricycles are prone to roll instability or even roll over in the event of a collision and rubbing accident. The accident may cause the driver to be caught by the tricycle Throw it away, so that the driver loses control of the vehicle; after the accident, the driver cannot stop the tricycle immediately. At this time, due to the idling speed of the engine, the tricycle will still drive forward. In addition, the collision accident caused the tricycle. The steering of the motor is out of control. At this time, the three-wheeled motorcycle will be in a driving but uncontrolled situation. Once this happens, it will cause unpredictable damage to other vehicles and pedestrians driving around normally, and even cause damage to the driver. Secondary injury; tricycle safety system detects whether the tricycle is in a rollover state through the gyroscope installed on the tricycle; detects whether the driver is in a normal driving position through the ultrasonic sensor on the back of the body; detects the driver through the handle Whether the motor vehicle can be controlled normally; when the driver starts the tricycle with the key and presses the system switch, the system starts to work automatically. First, the wheel speed is sensed by the Hall sensor during driving, and the information is transmitted to the ECU to determine whether the vehicle is still driving. Or the wheels have been rolled over and the wheels are in an idling state. Secondly, the difference between the value of the ultrasonic distance sensor and the set initial distance is detected, and the data is reflected to the ECU. Finally, the collision sensor on the handle is detected, and the data of whether the driver is holding the handle normally is transmitted to the ECU. The engine stop motor is placed on the side of the oil pipeline, the ball valve is used to control the opening and closing of the oil pipeline, and the method of controlling the rotation of the stepping motor is used to drive the ball valve to rotate, thereby having the function of opening and closing the oil pipeline. When the ECU judges that there is an accident, the motor rotates, causing the ball switch to rotate, which in turn blocks the oil pipeline and causes the engine to stop. Since the engine stall will give the transmission a force that hinders the movement, forcing the three-wheeled motorcycle to stop, so as to avoid the three-wheeled vehicle in a state of idling and unmanned driving at a high-speed without the driver's control, which will cause harm to the surrounding traffic.

Description of drawings

The invention will be further described below with reference to the accompanying drawings.

Figure 1 shows the workflow manual

Fig. 2 is an explanatory diagram of the structure of the grip device

Figure 3 is a schematic diagram of the ultrasonic sensor installed on the seat

Figure 4 is a schematic diagram of the structure of the stepping motor and the ball valve

Figure 5 is a schematic diagram of the three-wheeled motorcycle and the position of the gyroscope

1. Throttle handle 2. Leather 3. Collision sensor 4. Ultrasonic sensor 5. Hall speed sensor 6. Gear 7. Final reducer 8. Tire 9. Stepper motor 10. Coupling 11. Spring fixed lock 12. Tube Road fixing piece 13. Gyroscope 14. ECU

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings

The three-wheeled motorcycle driving safety system is mainly used to monitor the driving status and driver status when the three-wheeled motorcycle is driving on the road, and automatically and safely stop the vehicle after an accident, including accelerator handle 1, leather 2, collision sensor 3, Ultrasonic sensor 4 , Hall speed sensor 5 , gear 6 , final reducer 7 , tire 8 , stepping motor 9 , coupling 10 , spring fixing lock 11 , pipeline fixing piece 12 , gyroscope 13 , ECU 14 .

The accelerator handle 1 is made with a deep groove for placing the collision sensor 3. There is a metal strip fixed with screws on one side of the collision sensor. By bending, a lever is formed, which can press the collision switch more effortlessly; the upper end of the metal strip is equipped with Metal rollers are used to reduce the friction between the leather and the metal strip, which can ensure more comfortable pressing; leather 2 is attached to the deep groove as a cover to reduce the driver's discomfort.

The ultrasonic sensor 4 is placed under the driver's seat; the distance between the driver's back and the seat back often changes due to the driver's actions during driving, and the sensor is placed under the seat. This change can be effectively reduced, and the detection distance can be more clearly fed back to the driver's position information.

The Hall rotational speed sensor 5 is placed on the rear axle of the three-wheeled motorcycle, and the rotational speed of the wheel is detected through the gear 6 installed on the axle.

The stepping motor 9 is controlled by the L298N motor drive module, and is powered by a three-wheeled motorcycle battery; the motor is connected to the ball valve through the coupling 10, the ball valve stem and the valve body are provided with perforations, and the valve body is provided with a groove at the height of the perforation; the ball valve The valve stem of the valve is provided with a spring and two metal keys, and the two keys are bounced into the groove of the valve body by the spring force, so as to clamp the valve stem. When disassembling the valve stem, just turn the valve stem to a specific position, and press the two keys back with the thin rod to disassemble the valve shaft; The pipeline can be fixed by tightening the fixing piece with a cable tie.

The specific working process of the system is as follows: when the three-wheeled motorcycle is not working, the switch on the front panel of the driver is turned on, and the system starts to work. The driver starts to drive the tricycle forward, and the hall sensor 5 located on the rear axle detects the rotational speed of the vehicle. At this time, the gyroscope 13 located in the middle of the three-wheeled motorcycle detects the inclination of the vehicle body, and feeds back a signal whether the vehicle rolls over to the ECU 14 . If it is detected that the vehicle rolls over at this time, indicating that an accident has occurred, the ECU 14 immediately controls the rotation angle of the stepper motor, closes the ball valve, and cuts off the oil pipeline to force the engine to stop. If the gyroscope 13 detects that the vehicle does not roll over, it detects the ultrasonic sensor 4 behind the seat, and the sensor transmits the distance information to the ECU 14 . the crash sensor 3. If the collision sensor 3 is pressed, it is considered that the driver is using the power of the vehicle to fine-tune the position of the vehicle, and the system does not interfere with the running of the vehicle. If the ultrasonic sensor 4 detects that the distance becomes longer and the collision sensor is not pressed again, it indicates that the driver has lost control of the vehicle and the vehicle is still moving. At this time, the ECU 14 immediately controls the stepping motor 9 to rotate the valve to stop the vehicle; when the ultrasonic sensor 4. When it is detected that the distance is in the normal range, the collision sensor 3 on the accelerator handle 1 is detected. If the collision sensor 3 is pressed normally, it means that the driver is driving the vehicle normally, and the system does not interfere with the driving of the vehicle. If the collision sensor 3 is not pressed, it means that the driver has an accident and cannot drive the vehicle normally, and the ECU 14 sends an instruction to the stepper motor 9 to close the valve of the oil delivery pipe. There is a reset switch on the driving panel. After the accident is under control, the driver can use the reset switch to control the stepper motor to reset, so that the driver can drive normally again.

Claims (10)

1. A running safety system for motor tricycle is composed of ECU, Hall rotation speed sensor, ultrasonic sensor, collision sensor, gyroscope, step motor, power switch and power supply.

2. Due to the characteristics of the motor tricycle, when the motor tricycle is subjected to collision and rubbing accidents, the motor tricycle is very easy to incline, destabilize and even overturn, and accidents can cause a driver to be thrown away by the motor tricycle, so that the driver loses control over a vehicle; after an accident occurs, a driver cannot stop the motor tricycle at the first time, if the transmission is not in a neutral gear state, the motor tricycle still can run forwards due to the idling speed of an engine, and in addition, the steering of a tricycle is not controlled due to the collision accident, and the motor tricycle can be in a running but uncontrolled condition at the moment; once this occurs, unpredictable damage to other vehicles and pedestrians in the surroundings, and even secondary damage to the driver, can occur.

3. The running safety system of the motor tricycle detects whether the tricycle is in a rollover state or not through a gyroscope installed on the motor tricycle; detecting whether a driver is normally in a driving position or not through an ultrasonic sensor on the back of the vehicle body; detecting whether the driver can normally control the motor vehicle through the grip; when a driver starts the tricycle by using a key, a system switch is pressed, the system automatically starts to work, firstly, the rotating speed of wheels is sensed by the Hall sensor in the running process, information is transmitted to the ECU, whether the vehicle is still driven or whether the overturned wheels are in an idle state is judged, then, the difference between the value of the ultrasonic distance sensor and the set initial distance is detected, and data are reflected to the ECU; finally, detecting a collision sensor on the handle, and transmitting data of whether the driver normally holds the handle to the ECU; the engine stopping motor is arranged at one side of the oil pipeline, the opening and closing of the oil pipeline are controlled by adopting a ball valve, and the ball valve is driven to rotate by adopting a method of controlling the rotation of the stepping motor, so that the function of opening and closing the oil pipeline is realized.

4. When the ECU judges that an accident occurs, the motor rotates to enable the ball switch to rotate, so that the oil delivery pipe is blocked, and the engine is stopped.

5. The engine is stopped, so that the force for blocking the movement is applied to the transmission, the motor tricycle is forced to stop, and the harm to surrounding traffic caused by the fact that the tricycle is in a high-gear idle-speed unmanned state without being controlled by a driver is avoided.

6. A motor tricycle driving safety system as claimed in claim 1 wherein the gyroscope is located near the centre of mass of the motor tricycle to more accurately reflect changes in body angle of the motor tricycle.

7. The motor tricycle running safety system of claim 1, wherein the collision sensor is disposed under a driver's grip, a deep groove is disposed in the middle of the grip, the collision sensor is disposed in the groove, and a signal generated by the collision sensor is pressed down by applying a pressure applied to the sensor by the grip of the driver during running to determine whether the driver is in the grip state; the deep groove is covered by soft leather, so that the driving comfort of a driver is ensured; a metal strip is arranged on the side surface of the collision sensor, and a switch on the collision sensor is pressed by utilizing the lever principle; the contact part of the metal strip and the leather is provided with a small wheel to reduce the friction resistance, so that the driver can save labor as much as possible when pressing the sensor, and the fatigue is reduced.

8. A motor tricycle driving safety system according to claim 1, wherein the ultrasonic sensor is disposed on the back of the driver's seat and directed toward the driver, and the distance from the driver is calculated by the conduction time of the sound as a condition for verifying that the driver is in the driver's seat.

9. A motor tricycle running safety system as claimed in claim 1, the switch and reset switch being located on the driver panel of the motor tricycle to facilitate the driver to turn the device on or off and reset it.

10. A motor tricycle running safety system as claimed in claim 1, wherein a hall speed sensor is mounted on the rear axle of the motor tricycle to detect whether the wheels are rotating and feed back the signal to the ECU.

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