Measuring and monitoring stretch distance

Help & Support Robots & Kits
1

Hi!

I require your help regarding a problem I’m encountering.

I want to measure, monitor, and record the distance between points A and B.

It has to be repeatable over thousands of cycles.

I also need recommendations for monitoring hardware (small footprint) that can be programmed to collect stretch distance data for further processing.

Sequence - the distance between fixed points A and B changes ( could be 1 to 4 inches) due to applied external stress, the extension occurs repeatedly, the stretch distance is recorded and monitored when distance is higher than preset value - an audio or visible signal is triggered. It must be sensor output must be repeatable within +/-0.5".

Filed: Material property testing

Thank you so much in advance for your help!

3

Hello @SENSOR6005,

Welcome to RobotShop community.

Please check our stretch sensors, it might be a good fit for your project:

https://www.robotshop.com/ca/en/catalogsearch/result/?___store=ca_en&q=stretch+sensor&order=relevance&dir=desc&___from_store=eu_en

You can use the readings from the sensor as a trigger for the alert.

Awaiting your reply.

Sincerely,

4

I did purchase one sensor just to check its repeatability. I stretch it 2 cm and 4 cm three times. The resistance readings were not repeatable. They vary after each stretch sequence. I need something more reliable as signal readout will trigger the second action.

5

Hello @SENSOR6005 ,

Thank you for your reply.

Unfortunately, these are the only options we have at the moment.

This is a public topic so you can check if anyone else had a similar experience to share with you.

Sincerely,