Micro bluetooth motion sensor

### Project Introduction

Designed and produced a miniature, low-power, stable and reliable motion sensor and fixed it on the football to measure the football's motion status. The data collection program and the host computer program were written to analyze each The data collected by the sensor obtained the movement trajectory information of the football, tested the accuracy of the football dynamics model, and verified the effectiveness of the data fusion algorithm.

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### Project function introduction

Introduction and introduction to the relevant functions of the project

* There are two versions. The Bluetooth SOC chips are TI's CC2541 and CC2640 respectively. The Bluetooth module uses Ebyte E72 and E104
* The CC2541 version has a core of 51, The design is simple, but the power consumption and performance are weaker than CC2640
* The core of the CC2640 version is ARM, the development is complex, but the power consumption is low and the performance is strong
* The measured communication distance with the mobile APP is about 20 meters
* Wrote the firmware of the Bluetooth SOC chip and Android APP program
* is powered by a micro lithium battery and integrates a power conditioning circuit, with high efficiency and long battery life
* The Bluetooth SOC firmware source code engineering structure is relatively large and complex and is not easy to upload. If necessary, please send an email [2544122483@qq.com] (mailto:2544122483@qq.com), welcome to communicate
* The development of Bluetooth SOC refers to the "Learning Bluetooth in a Simple and Rough Way" series (author: Tiantian Daxigua). I would like to express my gratitude to the boss for sharing!

### Performance parameters

| | |
| --- | --- |
| Sampling rate | Above 200Hz |
| Size | 38mm*25mm |
| Weight (with battery and without GPS module) | 13g
|
| Power consumption | Less than 50mW |
| Battery life | More than 3 hours |