ปิด

Real-time sensor app

I want to measure the rotations of a magnet near a 3-axis magnetometer and do some simple processing to it. THIS IS A PURELY FUNCTIONAL SINGLE-USER APP. It does not need to be pretty, or even very user-friendly.

PROBLEM

Imagine a magnet mounted inside a ball, so it can rotate randomly in any orientation. ... like a cylindrical magnet stuffed into an orange.

As the orange rotates, the 3-axis magnetometer senses rough sinusoids, each going through a maximum and minimum as the ball rotates. I need these 3 input signals resolved to a single rotation... because I want to know how the ball is rotating as listed below. The overall magnitudes (s) will increase and decrease as the ball moves closer and further from the phone, but I don't care about these values. I'm looking for TWO pieces of information:

1) A rotation counter, recording how many times the ball rotates in a direction between "start" and "stop" (Note: When the ball reverses direction (meaning when the ball is rotating in a particular direction and then the inverse signal is measured.... the inverse signal will NOT be a perfect mirror of the original because the ball will wobble or be off-axis slightly, and the algorithm needs to accommodate this variation.)

2) Angular velocity of the ball rotation (rev/second) This does NOT need to be accurate +/- 20% is fine.

Again, I'm NOT interested in accumulated 3D data over time. I'm resolving collected 3D input (XYZ) into a single output, because in the real world the orientation of a ball does not matter.

RAW DATA

A sample of raw data from the three sensors is provided. The motion is not fast: maximum 1 revolution/second

FOCUS

As mentioned above, do not quote as if this is a full application. That comes later. This app is purely functional data collection. Very basic.

My current belief is that programmers who do not have mathematical skills will find this app difficult... And programmers comfortable with math will find this app easy.

ทักษะ: iPhone, คณิตศาสตร์, Matlab and Mathematica, Mobile App Development

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เกี่ยวกับนายจ้าง:
( 6 บทวิจารณ์ ) Berkeley, United States

หมายเลขโปรเจค: #18000558

freelancer 29 คน กำลังเสนอราคาเฉลี่ยที่ $471 สำหรับงานนี้

Yugene90

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technorizen

Hello, I m fulltime available for work , I saw your job post and you need Android + iphone app for " Real-time sensor app App "and i have skills in coding similar app and i believe that i can do it for you เพิ่มเติม

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yashtechsolution

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wuyong2020

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Julian29

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ALLTECSOLUTION

Hi Hope you are doing well. I have reviewed your requirements and we can implement your time sensor app very well. We have developed hundreds of iOS apps and here are few of them. https: เพิ่มเติม

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SeniorFreeDev

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hirakchhatbar

Hi,. I read entire description and can help you built the prototype that you are looking to start with. I am pretty good with maths. I have worked with magnetometers, accelerometers and gyros before in android app to เพิ่มเติม

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Thesynapses

Dear Client, Greetings from Synapse! We're also glad to share that we have a relevant experience in development of such kind of apps for past 5 years with strong competency over iOS, Android, and Windows. Many of เพิ่มเติม

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fullstackappcode

Hello I've read your description and can know that you'd like to build a real-time sensor app. As a senior developer who has good experience in Android/iOS app development, I'd like to help you with this project. เพิ่มเติม

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zainpacc

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invokeitsol

Hello, I have read all the Description of your project that you are looking for a Real Time Sensor App on Android +iPhone+ Admin Panel platform. I can design and develop it for you perfectly with all Features & func เพิ่มเติม

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mobileappsites

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KasunChameera94

HI, Saw that you are looking for a app developer to implement you a Sensor app to track some 3 axis magnetometer readings. I can help you with that most importantly i have an engineering background therefore i a เพิ่มเติม

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forgeDev15

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