Tennis Net Tension System with Force Feedback
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Solution Overview
Problem
The inconsistency in tennis net tension and height across different tournaments and courts due to manual cranking methods leads to varying playing conditions, affecting ball trajectories and point outcomes, with existing systems failing to accurately measure or maintain uniform tension.
Innovation Solution
A system that measures the force exerted by the net on the center-strap or singles stick using force-measuring devices like scales and load cells, providing an accurate reflection of net tension and potentially detecting service lets through force changes caused by ball impacts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If manual cranking is used to adjust net tension, then the net can be set up quickly, but the net tension and height become inconsistent across different courts and tournaments
Solution Approach 1:
The patent applies feedback by using force-measuring devices (scales, load cells) to measure the actual tension in the net cable and providing this information back to the operator through displays or indicators. This allows the operator to adjust the cranking process based on real-time measurements, ensuring consistent net tension across different courts and tournaments while maintaining quick setup through manual operation.
Solution Approach 2:
The patent replaces the purely mechanical feel-based cranking system with a measurement-based system using force-measuring devices. Instead of relying on the operator's subjective mechanical sense of tension, the system uses objective force measurements to determine when the desired net tension is achieved, thereby standardizing the setup process across different locations.
2Reliability
If the net is cranked tighter to increase tension, then ball trajectories become more predictable, but the net height varies due to sag reduction
Solution Approach 1:
The system uses force-measuring devices to provide real-time feedback on the tension being applied to the net. This allows operators to make precise adjustments to achieve the desired tension level without over-tightening, which would reduce sag too much and alter net height. The feedback mechanism enables fine-tuned control to balance trajectory consistency with height maintenance.
Solution Approach 2:
The patent changes the parameter being controlled from subjective mechanical feel to objective force measurement. By measuring force/tension directly, the system can precisely control the tension parameter while monitoring its effect on net height, allowing for optimized settings that maintain both trajectory consistency and proper net height.
3Adaptability or versatility
If different net tensions are used at different tournaments, then playing conditions can be adapted to local preferences, but service let outcomes become unpredictable
Solution Approach 1:
The force-measuring devices provide objective feedback on the actual tension being applied to the net. This allows tournament organizers to deliberately set specific tension levels (and thus adapt playing conditions) while having precise knowledge of what is being achieved. The feedback ensures that the intended tension is actually realized, making service let outcomes predictable within each tournament even if they differ from other tournaments.
Solution Approach 2:
The system allows for preliminary measurement and adjustment of net tension before matches begin. By using force-measuring devices during setup, the desired tension can be established in advance, ensuring consistent playing conditions for all matches at a tournament while maintaining the ability to adapt to local preferences through controlled tension selection.
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
Ensures consistent net tension and height, reducing inconsistencies in ball trajectories and point outcomes, and allowing for precise adjustment and monitoring of net tension during matches, thereby improving playing conditions.
Implementation Method 1
measuring the force exerted by the net on a center- strap or a singles stick
Data Source
Figure 1~2
Figure 3a~3b
Figure 3c~4
AI summary
Disclosed is system and method for measuring the tension of a tennis net, and, alternatively or in addition, for determining if a service let occurs via the measuring of the net tension. The disclosed embodiments measure a force exerted on the center-strap or the singles stick by the net. In these embodiments, the measured force provides an accurate reflection of the tension of the net.