Timed Up and Go Test Automation Using Laser Distance Measurement
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Solution Overview
Problem
Existing methods for conducting the Timed Up and Go Test are error-prone and require specific setup conditions, making them difficult to perform independently and accurately.
Innovation Solution
A method utilizing distance measurement equipment to continuously measure the subject's distance from a chair to a wall or obstacle, with automated start and stop signals, and analysis of distance signals to determine the test's correctness and duration, allowing for independent performance without additional assistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If automated mechanical aids are used to specify the subject's position, then the test can be performed more systematically, but the setup becomes error-prone and complex
Solution Approach 1:
The patent replaces complex mechanical positioning aids with an optical measurement system (laser distance measurement). Instead of using mechanical devices to specify and enforce position boundaries, the system uses laser distance measurements to continuously monitor and digitally define the test area, eliminating mechanical complexity while maintaining measurement reliability
Solution Approach 2:
The patent introduces a laser distance measurement device as an intermediary between the subject and the position specification requirements. This intermediary continuously measures distance and provides data to the control unit, which then determines whether the subject is in the correct position, thereby mediating the position specification function without requiring direct mechanical intervention
2Measurement precision
If multiple assistants are used to monitor and record the test, then the test can be performed accurately, but the ease of independent performance is reduced
Solution Approach 1:
The patent implements a self-service system where the measurement device automatically performs all monitoring and recording functions. The control unit continuously receives distance measurements, automatically determines test completion based on pre-programmed criteria, and records results without human intervention. This allows any subject to independently perform the test while maintaining measurement precision through automated evaluation
Solution Approach 2:
The system incorporates continuous feedback through automatic evaluation of distance measurements. The control unit receives real-time distance data and automatically compares it against the turn-around threshold value, providing immediate feedback on whether the subject has completed the required movement. This automated feedback loop replaces the need for human assistants to monitor and interpret position
3Stability of the object's composition
If specific setup conditions are required, then the test can be standardized, but the adaptability to different spaces is reduced
Solution Approach 1:
The patent implements dynamic adaptability by allowing the turn-around threshold value to be flexibly defined based on the available space. Rather than requiring fixed physical boundaries, the system dynamically adjusts the virtual turn-around point based on the distance measurement capability and available room space, maintaining test standardization through consistent measurement methodology while adapting to varying physical environments
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
Enables straightforward and accurate performance of the Timed Up and Go Test, reducing errors and allowing for automatic setup and self-administration, while ensuring the test is completed correctly and the results are reliably recorded.
Implementation Method 1
distance measurement equipment which is arranged on the backrest and is oriented from the backrest toward the subject sitting on the chair
Data Source
AI summary
A method determines the time required for a timed up and go test and for verifying an ascertained result. A distance measuring device is provided which continuously measures the distance from a subject located in front of a chair to the backrest of the chair and which forwards the distance to a control unit. The chair is positioned in particular at a specified distance to a wall, an obstacle, or a marking. The measured distance values recorded by the distance measuring device are continuously recorded. The subject is instructed to stand up from the chair, walk forwards, in particular towards the wall, the obstacle, or the marking, and then turn around, in particular in front of the wall, the obstacle, or in the region of the marking, and sit back down on the chair. The subject carries out these instructions to the best of their ability.