Adjustable Table Tilt Sensing for Collision-Safe Height Control
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Solution Overview
Problem
Existing electrical adjustable tables lack a mechanism to detect collisions during height adjustment, leading to potential damage from obstacles and instability.
Innovation Solution
An electrical adjustable table control method that includes motion sensors to detect tilting and automatically stop the height adjustment when an obstacle is detected, incorporating a control box connected to the lifting structure, hand control device, and motion sensor units to prevent continuous lifting after collision.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the table plate is adjusted to a proper height for users of different heights and body shapes, then user comfort is improved, but the risk of collision with obstacles increases
Solution Approach 1:
The motion sensor unit performs preliminary detection of obstacles before the table plate reaches them during height adjustment. By detecting obstacles in advance and triggering a stop signal, the system prevents collisions while maintaining the ability to adjust to comfortable heights for different users.
2Speed
If the height adjustment mechanism operates continuously to reach the desired height, then adjustment speed is improved, but damage from collision increases
Solution Approach 1:
The motion sensor unit continuously monitors the height adjustment process and provides real-time feedback about obstacles. When an obstacle is detected, the sensor triggers a feedback signal to the control system, which immediately stops the lifting structure. This feedback mechanism allows continuous operation at high speed while preventing damage through automatic interruption.
3Difficulty of detecting and measuring
If motion sensors are added to detect obstacles, then collision detection capability is improved, but device complexity increases
Solution Approach 1:
The patent replaces complex mechanical obstacle detection mechanisms with motion sensor units that use optical or electromagnetic fields to detect obstacles. This substitution provides effective collision detection capability while avoiding the mechanical complexity of physical sensors, switches, or mechanical stops.
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
Prevents damage to the table and objects on it by stopping the height adjustment when an obstacle is sensed, ensuring safe operation and preventing accidents.
Implementation Method 1
at least one motion sensor unit of the electrical adjustable table detects the table plate tilted during adjusting the height of the table plate
Data Source
AI summary
An electrical adjustable table having a table plate, a table foot, a lifting structure, a hand control device, a motion sensor unit, and a control box is provided. The electrical adjustable table adjusts a height of the table plate heading to a first direction after receiving an operation sent via the hand control device, and stops adjusting the height of the table plate after sensing the table plate is tilted via the motion sensor unit during adjusting the height of the table plate.