Disc Grabbing Device Weight Sensing for Accurate Counting
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Solution Overview
Problem
Existing disc grabbing devices inaccurately determine the quantity of discs due to height tolerance and risk of disc damage from direct contact with a probe, leading to erroneous counting and potential scratching.
Innovation Solution
A disc grabbing device equipped with a weight sensing unit and counter that determines disc quantity based on the total weight of grabbed discs, eliminating the need for a probe and preventing direct contact, thus avoiding errors and damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a probe is used to measure disc height for determining disc quantity, then the disc quantity can be determined, but the measurement precision deteriorates due to height tolerance accumulation and the disc surface may be damaged
Solution Approach 1:
The patent replaces the mechanical probe-based height measurement system with a weight-based measurement system. Instead of using a physical probe that contacts and potentially damages disc surfaces to measure height, the invention uses a weight sensing unit to measure the total weight of grabbed discs. The disc quantity is then determined by dividing the total weight by the average disc weight, eliminating direct mechanical contact with disc surfaces while maintaining measurement accuracy.
2Quantity of substance
If probe-based height measurement is used to determine disc quantity, then the disc quantity can be obtained, but the reliability deteriorates due to accumulated tolerance errors
Solution Approach 1:
The patent changes the measurement parameter from disc height to disc weight. Instead of measuring the height of individual discs and accumulating errors, the system measures the total weight of all grabbed discs simultaneously. By using weight as the measurement parameter and calculating disc quantity through division by average disc weight, the system avoids the cumulative tolerance errors inherent in sequential height measurements while improving determination reliability.
3Measurement precision
If a probe structure is added to measure disc height, then disc quantity determination is enabled, but the device complexity increases
Solution Approach 1:
The patent makes the grabbing body serve multiple functions: it both grabs/discs and measures their total weight through an integrated weight sensing unit. This eliminates the need for a separate probe structure, as the grabbing body itself becomes the measurement platform. The weight sensing unit is incorporated into the grabbing body, allowing simultaneous grabbing and weighing operations, thereby reducing device complexity while maintaining measurement capability.
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
Accurately determines disc quantity by weight, preventing errors and disc damage, and ensuring efficient grabbing and unloading operations without additional structural requirements.
Implementation Method 1
The weight sensing unit is disposed on the disc grabbing body for sensing a weight of the at least one disc grabbed on the disc grabbing body
Data Source
AI summary
A disc grabbing device including a disc grabbing body, a weight sensing unit and a counter is provided. The disc grabbing body is used for grabbing or unloading at least one disc. The weight sensing unit is disposed on the disc grabbing body for sensing a weight of the at least one disc grabbed on the disc grabbing body. The counter is connected to the weight sensing unit used for obtaining a disc quantity of the discs grabbed on the disc grabbing body according to the weight.