Motor Vehicle Safety Device with Tilt and Operator Sensors
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Solution Overview
Problem
Motor vehicles such as ATVs, lawn mowers, and cars face risks of dumping due to terrain changes or improper operation, and operators may inadvertently leave the control range, leading to safety hazards.
Innovation Solution
A safety device comprising a microprocessor, controller, angle sensor, and operator sensor, which detects tilt angles and operator presence, triggering the ignition and brake systems to prevent movement when unsafe conditions are detected.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the motor vehicle operates on complex terrain or at high speed, then the vehicle performance and operational capability are improved, but the risk of dumping increases due to terrain changes or improper operation
Solution Approach 1:
The angle sensor continuously monitors the vehicle's tilt angle in advance before dumping occurs. When the detected angle exceeds the preset threshold, the system proactively triggers the warning signal and subsequently activates the braking system to stop the vehicle, preventing dumping rather than reacting after it occurs.
Solution Approach 2:
The system establishes a closed-loop feedback mechanism where the angle sensor continuously detects the vehicle's tilt angle and feeds this information to the controller. The controller compares the detected angle with the preset threshold and automatically adjusts the warning signal and braking system accordingly, creating a real-time monitoring and response system that maintains safety during high-performance operation.
2Ease of operation
If the operator is allowed to leave the control range temporarily, then the operator's comfort and freedom of movement are improved, but the risk of operator disengagement-related hazards increases
Solution Approach 1:
The operator sensor acts as an intermediary between the operator and the vehicle's ignition system. It continuously detects whether the operator is within the sensing range and transmits this information to the controller, which then automatically controls the ignition device. This intermediary mechanism ensures the vehicle remains safe even when the operator temporarily leaves the control range, while still allowing necessary operator movement.
3Reliability
If automatic safety monitoring systems are added to detect tilt angle and operator presence, then the safety and reliability are improved, but the device complexity increases due to additional sensors and control systems
Solution Approach 1:
The controller serves multiple functions: it processes signals from both the angle sensor and operator sensor, controls the warning signal output, and manages the ignition device and braking system. By making the controller multi-functional, the patent reduces the need for separate dedicated control units for each safety function, thereby limiting the increase in device complexity while maintaining comprehensive safety monitoring.
Solution Approach 2:
The patent combines the warning signal system, ignition control system, and braking control system into a single integrated safety monitoring system controlled by one controller. This merging of previously separate systems into a unified architecture reduces overall system complexity while maintaining all necessary safety functions through coordinated operation of the angle sensor and operator sensor.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Effectively prevents vehicle dumping and operator disengagement-related hazards by automatically shutting off the ignition and engaging the brakes when unsafe angles or operator disengagement is detected, ensuring safety during operation.
Implementation Method 1
the angle sensor detects the angle of the body of the motor vehicle and transmits the detected angle signal to the microprocessor
Implementation Method 2
If the user goes beyond the sensing range of the operator sensor means, the operator sensor means provides a signal to the microprocessor
Implementation Method 3
the operator sensor means of the safety device can be a contact sensor, a photoelectric sensor, or an ultrasonic sensor
Implementation Method 4
the operator sensor means of the safety device can be a contact sensor, a photoelectric sensor, or an ultrasonic sensor
Implementation Method 5
the microprocessor activates the controller to turn off the ignition device and to actuate the brake device
Data Source
AI summary
A safety device for motor vehicle includes a microprocessor having set therein a tilt angle default value, a controller coupled with the ignition device and brake device of the motor vehicle, an angle sensor mounted to the body of the motor vehicle and an operator sensor installed in the directional control device. The microprocessor activates the controller to turn off the ignition device and to actuate the brake device if the motor vehicle is tilted excessively or when the operator goes out of the sensing range of the operator sensor, avoiding danger.