Intelligent Lift Table Height Adjustment for Sedentary Posture Prevention
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Solution Overview
Problem
Existing tables and chairs with adjusting functions require manual adjustment and fail to remind or correct users automatically, leading to prolonged sedentary postures that can cause physical fatigue and health issues.
Innovation Solution
A lift table with an intelligent adjusting function, equipped with an infrared pyroelectric detection unit, an infrared thermopile detection unit, and a table-top height adjusting unit, which includes a motor and transmission device, automatically detects user posture and adjusts the height imperceptibly to prevent prolonged sitting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual adjustment is used for table height, then device complexity is reduced, but ease of operation deteriorates because users must remember to adjust manually
Solution Approach 1:
The lift table automatically detects user presence and adjusts table height without manual intervention. The control unit monitors sensors (infrared, pressure, capacitive) and autonomously controls the motor-driven height adjustment mechanism, eliminating the need for users to remember to adjust the table manually.
Solution Approach 2:
The patent replaces manual mechanical adjustment with an automated electromechanical system. Sensors detect user presence and the control unit activates a motor-driven transmission device to adjust table height automatically, substituting human action with an automated control system.
2Extent of automation
If automated detection and adjustment is implemented, then ease of operation is improved, but device complexity increases due to multiple sensors and control units
Solution Approach 1:
The control unit serves multiple functions: it processes signals from various sensor types (infrared, pressure, capacitive), determines user presence and posture, decides when adjustment is needed, and controls the motor-driven height adjustment. This multi-functionality consolidates complexity into a single integrated control system.
Solution Approach 2:
The patent combines multiple detection methods (infrared sensors, pressure sensors, capacitive sensors) into a unified detection system that feeds into a single control unit. This merging approach integrates complexity rather than multiplying separate systems.
3Object-affected harmful factors
If frequent height adjustments are made, then user health is improved by preventing sedentary posture, but productivity deteriorates due to interruptions
Solution Approach 1:
The system performs partial adjustments rather than full height changes. When a user has been sitting for a predetermined time, the table adjusts by a predetermined amount (e.g., 5-10 cm) rather than completely changing height, providing health benefit with minimal disruption to the user's workflow.
Solution Approach 2:
The lift table implements periodic adjustment based on time intervals. The control unit monitors how long the user has maintained a sitting posture and triggers adjustment only after a predetermined time threshold is reached, creating rhythmic rather than continuous interruptions.
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
The lift table effectively detects and adjusts the user's posture to prevent sedentary states, improving sitting posture and reducing the risk of physical fatigue and health issues associated with prolonged sitting.
Implementation Method 1
an infrared pyroelectric detection unit
Implementation Method 2
infrared pyroelectric detection unit
Implementation Method 3
an infrared thermopile detection unit
Implementation Method 4
infrared thermopile detection unit
Data Source
AI summary
The invention relates to a lift table with an intelligent adjusting function and a method for intelligently adjusting the lift table. The lift table comprises a lift table body and an intelligent adjusting device arranged on the lift table. The intelligent adjusting device comprises an infrared pyroelectric detection unit, an infrared thermopile detection unit and a table-top height adjusting unit. The table-top height adjusting unit comprises a driving unit and a motor unit. The motor unit comprises a motor and a transmission device. The transmission device is connected between the motor and an adjustable table-top of the lift table body. The infrared pyroelectric detection unit and the infrared thermopile detection unit both are connected to the driving unit. The method is realized based on the lift table. The present invention can solve a health problem due to long-time use of the table by a user at a single posture.