My Smart Racket Recommender

This project recommends a suitable racket to budding tennis players based on their playing style, physique and fitness levels.

IntermediateWork in progressOver 1 day1,763

Things used in this project

Hardware components

NXP Hexiwear

Software apps and online services

Evothings Studio

ARM mbed OS 5

Hand tools and fabrication machines

Arm mbed

Story

Tennis

Many budding Tennis players struggle to identify a racket that matches their playing style, physique and fitness levels. The factors to consider are as follows:

Playing Style: Whether the player has a full, medium or short strokes has a bearing on the type of racket. Also of importance is if the player is a baseline, serve-and-volley or an all-court type of a player. The other considerations are skill level of the player and the corresponding preference for power, control or balance attributes in their rackets.

Physique: The physique of the player is very important especially if they have healthy arms or if they have arms troubled by golf/tennis elbows. The physique can determine if a lighter racket is preferable to a heavier one.

Fitness Level: The fitness level of the player is very important to determine if they can perform optimally during a match. The fitness level can determine if it is "comfortable" to carry a heavier or a lighter racket during the match.

All the above factors go into determining an ideal racket for a tennis player at a particular point in their career.

The hear rate sensor, pedometer can combine to provide data to fitness level evaluation module. The vibration/transient-acceleration function can measure the vibrations traveling through the arm on contact with the ball and provide data to playing style evaluation engine. The accelerometer provides valuable information about the playing style to the evaluation engine. All this information combined with pre-defined physique information like height, weight, health of playing arm is streamed to the recommender engine in the cloud to provide racket recommendations to the player.

Code

Racket Decision Making App

<!DOCTYPE html>
<html>
<head>
 <meta charset="utf-8">
 <meta name="viewport" content="width=device-width, user-scalable=no,
    shrink-to-fit=no, initial-scale=1.0, minimum-scale=1.0, maximum-scale=1.0">
 <title>VibrAnalyzer</title>
 <style>@import 'ui/css/evothings-app.css';</style>
 <script>
 // Redirect console.log to Evothings Workbench.
 if (window.hyper && window.hyper.log) { console.log = hyper.log }
 function displayResults() {
   var vibs = document.getElementById("Vibrations");
   var heal = document.getElementById("Health");
   var rack = document.getElementById("Racket");
   var reco = document.getElementById("Recommendation");
   var recoTxt = '<p>';
   if ('LT10' === vibs.value) {
     recoTxt += '<br/>Very few vibrations were detected!';
     if ('Poor' === heal.value || 'Fair' === heal.value) {
         recoTxt += '<br/>Try dampeners to reduce vibrations even more';
     }
     if ('Heavy' === rack.value) {
         recoTxt += '<br/>Try a lighter racket with similar attributes for comparison';
     } else if ('Light' === rack.value) {
         recoTxt += '<br/>Try a heavier racket with similar attributes for comparison';
     } else {
         recoTxt += '<br/>You might have found your ideal racket!';
     }
   } else if ('LT60' === vibs.value) {
     recoTxt += '<br/>Significant vibrations were detected. Try others before making a decision.';
     if ('Poor' === heal.value || 'Fair' === heal.value) {
         recoTxt += '<br/>This may not be the one for you.';
     }
     if ('Right' === rack.value) {
         recoTxt += '<br/>Try a different brand with similar attributes.';
     }
   } else {
     recoTxt += '<br/>The vibrations are too much to be healthy. Try others.';
   }
   recoTxt += '</p>';

   reco.innerHTML = recoTxt;
 }
 </script>
 <script src="cordova.js"></script>
 <script src="libs/evothings/evothings.js"></script>
 <script src="libs/evothings/ui/ui.js"></script>
 <!-- TODO: Add libraries that you need -->
 <script src="libs/smoothie/smoothie.js"></script>
 <script src="libs/mqttws/mqttws.js"></script>
</head>
<body ontouchstart=""><!-- ontouchstart="" enables low-delay CSS transitions. -->
<header>
<button class="back" onclick="history.back()">
<img src="ui/images/arrow-left.svg">
</button>
</header>
<h1 class="green">Vibration Analyzer</h1>
 <div class="AppBox">
 Vibrations/min:
 <select id="Vibrations">
 <option value="LT10">&lt; 10</option>
 <option value="LT60">&lt; 60</option>
 <option value="GT60">&gt; 60</option>
 </select>
 <br/>
 Playing arm health: 
 <select id="Health">
 <option value="Good">Good</option>
 <option value="Fair">Fair</option>
 <option value="Poor">Poor</option>
 </select>
 <br/>
 Racket Feels: 
 <select id="Racket">
 <option value="Heavy">Heavy</option>
 <option value="Light">Light</option>
 <option value="Right">Just Right</option>
 </select>
 <br/>
 <button class="green" onclick="displayResults();">Recommendations</button>
 <br/>
 <p>Status: <span id="Recommendation"> </span></p>
 </div>
</body>
</html>