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Difficult times Yes, everyone know this, but this doesn´t have to be a stopper. I'm facing with problems to access to the laboratory with the autonomous vehicles. So, I'm going to show my progress and in the future I'll make another blog with the rest of the experiments.   Car test The first real test in the field it was in my personal car, I attached the sensor to and ECU that is under the steering wheel. The sensor Z axis was in alignment with the earth's gravity.   In the ...
souravv

#2 The Build

Posted by souravv Jan 27, 2021
The Components As promised, I received all the parts required to make my project a reality, on time. The package included a TOKIN VS-B203 high bandwidth vibration sensor, an STM32H743ZI ARM COrtex M7 microcontroller based development board in the Nucleo form factor and a Nucleo Bluetooth shield. These are some glimpses of the amazing hardware I received : https://www.dropbox.com/sh/t9hzp2qvrekj207/AABn2L9Vl-S4QeaBWhR5tMHva?dl=0 (for some reason I am unable to upload pics and videos to the bl ...
1. Introduction 2. Hardware Setup 3. Signal  Processing 3.1 Rotation tracking 3.2 Order tracking 4 Experiments 4.1 Signal Analysis 4.2 Real-time Dashboard 5. Summary   1. Introduction  Machine vibration analysis is used in predictive maintenance to check machinery health and predict their failure. When performed regularly (or continuously) machine faults can be detected in their early stages and appropriate action can be taken to avoid machine f ...
Workflow  The noise (acoustic sensor) and vibration (Kemet sensor) analysis module attached to the brake pedal of the vehicle or in the vicinity. Vibration and acoustic data were collected simultaneously during braking (taken at low speeds and not in normal driving conditions due to limitations in the placement of the sensor to the braking pad areas) to identify the braking condition. The data analysis focuses on the low-frequency domain.     The KEMET vibration sensor and acous ...
Hi All,   The final blog is here about my instrument "KEMET Music Pad" or "Music Surface Kit"   Introduction: When you clap with hands we can hear a sound, it can be turn into music based on the variation , vibration and velocity.  Its clearly says instruments are not really required to make any music. I remember those days where i used to make some sounds on our school desk/table. Today i have the vibration sensor which outputs can be used to produce some actual instrumental ...
I have conducted a sample experiment to measure the frequency of vibration of a defective BLDC fan using KEMET's VS vibration sensor. The video shows the measurement of vibration frequency.   ...
Experimenting with Vibration Sensors Challenge Summary It has been another fun challenge.  I was not able to achieve what I had proposed (TinyML model to identify people by their footstep vibrations), but as always I learned a lot working on the project.  And I've developed some hardware and software tools that will be valuable for future projects.   The Kemet/Tokin VS-BV203 Piezo Vibration Sensor is ultra compact (8.4 x 11.4 x 2.9 mm) and the 3 meter miniature flexible cable mak ...
I would like to have a summary here and talk about what I have learned during this project. Before that I would like to say that I really appreciate this opportunity that is given to me by element14 and Kemet. I enjoyed and learned a lot. Thanks again. And also I would like to thank anybody who read my blogs and watch my videos with my terrible English.   What I learned FFT is very important in vibration analysis Vibration Analysis in Buildings Bluetooth Low Energy (BLE) W ...
Introduction REMOTELY Programming and Debugging the Nucleo Board (via WiFi) Detecting Vibration on Nucleo Board alone (No Jetson Nano Anymore) Bluetooth Working End to End Prototype Working Related Links   IntroductionIn the previous blog, I have used Nucleo board to measure the signal and just pass the measurement to Jetson nano. We did some processing on Jetson and developed a logic to detect high and annoying vibrations that We could create. This logic was running ...
I did not obtain sufficient data (both in quality and quantity) to construct an impulse (model), but I thought it would be worthwhile to review what I was trying to achieve by comparison to an impulse that I have successfully deployed using Edge Impulse.   I created and deployed a keyword spotting impulse on an Arduino Nano 33 BLE Sense board that detects the words "On" and "Off".  I demonstrated that impulse in a previous post: Wio Terminal Sensor Fusion - TinyML Keyword Spotting Part ...
I started collecting data for my project, but I strained my back (doing something else) and I don't think I'll be doing much more project stuff for a while.   I did capture a bunch of data and I thought I'd evaluate that, even though I don't think it will be sufficient to develop a TinyML model.   Dataset overview First, let me go over the methodology that I used to determine the dataset parameters and experimental procedure.   My objective is to be able to recognize a person by ...
Final thoughts  As the competition comes to a close, these are my final thoughts... I feel this sensor is well-suited for many applications such as industrial IoT and field devices. Because of its high sensitivity, I am able to sense the vibrations easily from my hard disk experiment. Although at a hobbyist level, it may be a hard decision due to the high price. In my experiments, I have only done FFT analysis. But the possibilities are endless and it is up to the user's imagination to inte ...
Kemet Vibration Sensor Experiment for Predictive Maintenance Model Trainer 1 Introduction 2 Hardware and Software 3 Unboxing and Preliminary Functional Test 4 Senaries to be tested 5 Data logging 6 Data training 7 Data Deploing with AI capabilities 8 Summary and Conclusion 9  Reference and contributions Kemet Vibration Sensor Experiment for Predictive Maintenance Model Trainer1 IntroductionKemet Vibration Sensor show great promising application in Pre ...
3D Printed Mount My Measurement Setup Developing Notification Logic Related Links   3D Printed Mount  As the title of my project describes, I would like to measure the vibrations of our apartment or its floor that is caused by our indoor exercise. For this purpose I need to mount the sensor on the ground but unfortunately our apartment has a very thick carpet that is not allowing me to mount the sensor properly on the ground. So I had an idea to design a legged 3d pr ...
  What I intend to do is come up with a system that will detect and alert the uncommon movements in sleep, since seizures will not be tested I will focus on the most common data from visual muscle twitches and jerks, adding on possible add-ons in the future would be fun to play around building a more diverse system.   Since there is so much we can do its best we just try to focus on a working under the bed mattress detection system that will relay irregular patterns to a remote d ...
Experiment 4 (FFT Dashboard with Mbed DSP)  Please read my other blog posts too if you haven't Experimenting with Vibration Sensors - zst123's Blog Posts   Introduction  Since I still have time for one last experiment before the deadline, I decided to try out a live FFT plot using the Digital Signal Processing (DSP) functionality on this powerful microcontroller. I actually saw from the other challengers on how they use ARM DSP inside STM32Cube for FFT. It is very interesting an ...
Experimenting with vibration sensors – Machinery safety Blog #11 (Review & Final Thoughts)   For those of you that have read my blogs, you might have a good idea how my review and final thoughts will be.   Review:   From the day I received the KEMET Vibration Sensor I had a good idea that this challenge will be fun. My proposal was to use the sensor to check machinery vibrations and shut it down when the vibrations were too much. I was originally going to use the Nucl ...
Time to work on uploading data to Edge Impulse ...   Here is a view of my project on my Edge Impulse dashboard:   There are a few different methods for acquiring the data needed to train the model (impulse).  Using the Edge Impulse CLI, you can stream data from your device using the Data forwarder or upload data files using the Uploader.  You can also send data files to the Ingestion service https://docs.edgeimpulse.com/reference  using HTTP/HTTPS.   Here are the c ...
I've been working on a program that would allow me to quickly capture and label data to upload to Edge Impulse.   Data capture program requirements Fixed sample size Fixed sample rate Selectable data labels Incrementable file name Save to SD card    To make things easy, I'm not going to allow user entered parameters because I don't have a keyboard.  And I'm not going to get fancy and implement a GUI or pulldown selections (save that for another project ).  Because a ...
Experiment 3 (Fourier Transform Analysis to find RPM)  Please read my other blog posts too if you haven't Experimenting with Vibration Sensors - zst123's Blog Posts   Objective  This experiment is aimed for advanced users as it includes the use of Fast Fourier Transform (FFT). Today this will be a very long post as we shall collect many test results from different spinning devices! I will apply FFT to extract the frequencies presented to the vibration sensor.   From the resul ...
As I've described in earlier posts, I'm trying to see if I can use the sensor to pick up footstep vibration patterns to identify who is in the room.  With a single sensor this can't work for multiple people simultaneously, but hopefully it will work for a single person.   I've been researching the topic and I found an interesting article: Person Identification using Seismic Signals generated from Footfalls .  This is the pre-publication article as I don't have access to the publis ...
Happy New Year everyone,   I have been so intrigued with the KEMET Vibration Sensor I can’t stop experimenting.   On the weekend, I was trying different uses for the KEMET Vibration Sensor. Making sure I wasn’t interfering with anyone’s challenge idea, I decided to attach the sensor to my throat where my voice box would be located. Amazingly when I said the alphabet there was a distinct difference between each letter. If each letter is added with it's specific vibr ...
1. INTRODUCTION   Below I will expose my project that I proposed to do according to my first post:  Noise and Vibration Impact on Aquarium Sea-life - Blog Post #1 As you can see, my ideas were changed due to hardware and software issues that I will detail in the following sections. I'm the author, creator and owner of this end Project: idea, electrical diagram, and code.   2. HARDWARE   In the electronic diagram below I show the connections of the electronic components ...