/products/raspberry-pi/raspberrypi_projects/b/blog/posts/wilcoxon-pc420v-vibration-sensor-with-a-raspberry-pi-5Vibration analysis is important for any industrial process, as it provides us with a lot of information about the mechanical state of the machines we use. It also allows us to use their signals as interlocks in PLC programming, etc. Therefore, one ofen-USTelligent Community 12https://community.element14.com/products/raspberry-pi/raspberrypi_projects/b/blog/posts/wilcoxon-pc420v-vibration-sensor-with-a-raspberry-pi-5Mon, 22 Jul 2024 14:47:06 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:967494fb-2dde-4f04-8d2b-f69d0143c622kmikemoo1<p>Nice project.&nbsp; What will be its application?</p><img src="https://community.element14.com/aggbug?PostID=28186&AppID=84&AppType=Weblog&ContentType=0" width="1" height="1">https://community.element14.com/products/raspberry-pi/raspberrypi_projects/b/blog/posts/wilcoxon-pc420v-vibration-sensor-with-a-raspberry-pi-5Mon, 22 Jul 2024 09:34:23 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:967494fb-2dde-4f04-8d2b-f69d0143c622michaelkellett1<p>My first thought was:</p> <p>If you use the &#39;Insert&#39; then &#39;code&#39; functions you may be able to preserve the indentation on your code, without which Python is rather hard to follow.</p> <p>[embed:dc8ab71f-3b98-42d9-b0f6-e21e02a0f8e2:e690ff4f-9f9f-4b07-874c-2cf117094d7e:type=text&text=%20%20%20%20freq%20%3D%20list%28range%28101%29%29%0A%20%20%20%20ampl%20%3D%20list%28range%28101%29%29%0A%20%20%20%20%0A%20%20%20%20for%20step%20in%20range%280%2C101%29%3A%0A%20%20%20%20%20%20%20%20message%20%3D%20%22%3ASOUR2%3AAPPL%3ASIN%20%7B%3A.2f%7D%2C5%2C0%2C0%5Cn%22.format%28fs%29%0A%20%20%20%20%20%20%20%20siggen.sendall%28bytes%28message%2C%20%27UTF-8%27%29%29%0A%20%20%20%20%20%20%20%20freq%5Bstep%5D%20%3D%20fs%0A%20%20%20%20%20%20%20%20%23print%28%22Frequency%3A%20%7B%3A.2f%7D%20%5Ct%22.format%28fs%29%29%0A%20%20%20%20%20%20%20%20print%28%22%3ASOUR2%3AAPPL%3ASIN%20%7B%3A.2f%7D%2C5%2C0%2C0%5Cn%22.format%28fs%29%29%0A%20%20%20%20%20%20%20%20fs%20%3D%20fs%20%2A%20sm%0A%20%20%20%20%20%20%20%20time.sleep%281%29%0A%20%20%20%20%20%20%20%20message%20%3D%20%22MEAS%3AVOLT%3ADC%3F%20AUTO%5Cn%22%0A%20%20%20%20%20%20%20%20hpdmm.sendall%28bytes%28message%2C%20%27UTF-8%27%29%29%0A%20%20%20%20%20%20%20%20rpy%20%3D%20%20%28hpdmm.recv%281024%29%29%0A%20%20%20%20%20%20%20%20res%20%3D%20float%28rpy%29%0A%20%20%20%20%20%20%20%20ampl%5Bstep%5D%20%3D%20res%0A%20%20%20%20%20%20%20%20print%20%28%22DMM%20reading%20%7B%3A.4f%7D%5Ct%22.format%28res%29%29%0A%20%20%20%20%20%20%20%20%20%20%0A%20%20%20%20hpdmm.close%28%29%0A%20%20%20%20siggen.close%28%29%20%0A]</p> <p>It still looks wrong in the window while your are editing but it looks OK when posted..</p> <p>(The actual code is just the first example with formatting I found - not relevant to your blog !)</p> <p>The ADS 1115 isn&#39;t the ideal ADC for this work. It has a very nasty frequency response curve (page 12 of the data sheet) so at 860 s/s the response is about -3dB @ 400Hz but only - 18dB at 2kHz. (figures obtained by scaling from the graph on page 12).</p> <p>So you need an anti aliasing filter because out of band signals will be aliased back into the low frequency range.</p> <p>You could get some filtering in your differential amplifier..</p> <p>I didn&#39;t understand your current to speed function - the sensor is an accelerometer so I feel that there should be a&nbsp; double integrator somewhere but I didn&#39;t spot it.</p> <p>MK</p><img src="https://community.element14.com/aggbug?PostID=28186&AppID=84&AppType=Weblog&ContentType=0" width="1" height="1">https://community.element14.com/products/raspberry-pi/raspberrypi_projects/b/blog/posts/wilcoxon-pc420v-vibration-sensor-with-a-raspberry-pi-5Sat, 20 Jul 2024 18:03:57 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:967494fb-2dde-4f04-8d2b-f69d0143c622DAB1<p>Nicely done.</p><img src="https://community.element14.com/aggbug?PostID=28186&AppID=84&AppType=Weblog&ContentType=0" width="1" height="1">