1. REU SUMMER 2012 SENSOR PROJECT Alan Young 7/5/12

2. Mechanical Sensing System Goals for project – Conduct initial literature review – Select an appropriate distance sensor and a pressure sensor to interface with a system – Use LabVIEW to measure the signals from the sensors and display on a computer

3. Literature Review How to use sensors for distance measurement: http://www.waset.org/journals/waset/v51/v5 1-51.pdf http://www.waset.org/journals/waset/v51/v5 1-51.pdf How to use sensors for pressure measurement: http://www.emant.com/250001.page http://www.emant.com/250001.page

4. Rough sketch of mechanical system

5. Mechanical Sensor System Base Borrowed base from the Nanofab laboratory Displacement Sensor will attach a cylinder Pressure sensing pad will be located under the cylinder

6. Uses for project Assembly line worker Robotics research Automated stamper Robot that can type on a keyboard Research ways to incorporate sensors to any mechanical system

7. Displacement Sensors

8. SICK Displacement sensor Model name: SICK DT10Type: Red LED Sensor https://impurchasing.mysick.com/partnerPor tal/TopFrameset.aspx?lefttarget=../ProductC atalog/Leftnav.aspx%3Fcategory=Produktfind er&righttarget=../ProductCatalog/Datasheet. aspx%3FProductID=41543 https://impurchasing.mysick.com/partnerPor tal/TopFrameset.aspx?lefttarget=../ProductC atalog/Leftnav.aspx%3Fcategory=Produktfind er&righttarget=../ProductCatalog/Datasheet. aspx%3FProductID=41543 50 mm to 500 mm range 3 mm resolution Analog output, Cable interface 2m Cable costs $50 Need to put wires onto a DAQ, which plugs in via USB to a computer Works with NI DAQ: http://sine.ni.com/np/app/main/p/ap/daq/la ng/en/pg/1/sn/n17:daq,n36:18/ http://sine.ni.com/np/app/main/p/ap/daq/la ng/en/pg/1/sn/n17:daq,n36:18/ $359 Needs a power supply (on-off switch)

9. Keyence Laser distance sensor Model name: Keyence IL-100Type: Laser http://www.keyence.com/p roducts/sensors/laser/il/il_s pecifications_1.php?style=p rint http://www.keyence.com/p roducts/sensors/laser/il/il_s pecifications_1.php?style=p rint $1,490 $299 RS-232 adapter OR 4-20mA or -5 to 5V outputs

10. Tactile Sensors

11. Force Imaging Array from UneoTech http://www.uneotech.c om/ucctw/index.php?o ption=com_k2&view=it em&layout=item&id=17 3&Itemid=147&lang=en http://www.uneotech.c om/ucctw/index.php?o ption=com_k2&view=it em&layout=item&id=17 3&Itemid=147&lang=en $10,000 Comes with sensor pad, electronics controller, and software

12. Pressure Sensing Sheet from Sensible UI http://www.sensibleui.c om/buy http://www.sensibleui.c om/buy Initial Resolution: 4.5mm $399.00 USB interface with computer Sold out!!!

13. Interface Options

14. Data Acquisition Board http://sine.ni.com/nips/ cds/view/p/lang/en/nid /208789 http://sine.ni.com/nips/ cds/view/p/lang/en/nid /208789 NI 9219 $ 926.10 Need to make sure one or both sensors are compatible with the DAQ

15. Distance Sensor Interfaces SICK DT10 Has an analog voltage or current that can be plugged into the DAQ Must buy a DAQ that costs around $1000 Total price: ~$1300 Resolution of 3mm Cheaper, but less resolution Keyence IL-100 Has an option to have an RS-232 adapter, eliminating the need for a DAQ Total price: ~$1789 Resolution of 0.004 mm More expensive, but much better resolution

16. Summary

17. Products Product NameTolerancesRangeInterfacesPrice SICK DT103 mm to 5 mm50 to 500 mmAnalog current$389 Keyence IL-1000.004 mm75 to 130 mmRS-232$1789 SICK OD20.075 mm100 to 400 mmAnalog current$1000 Product NameTolerances & Resolution DimensionsInterfacesPrice Inventables Pressure- Sensing Sheet 5 to 25%, 20g to 10 kg Customizable, 8” by 8” preferred Analog resistance $133.25 Tekscan 3200Unspecified, 0 to 100 psi 6.6” by 6.6”Pressure distribution map software included $15,000… too expensive! Sensible UIUnspecified, 4.5mm spatial resolution 7.87” by 7.4”USB$399 Distance Sensors Pressure Sensors

18. Recommended choices Displacement sensor: SICK DT10, $389. Reasons: – Reasonable resolution (3 mm) – Interfaces with DAQ via wires and analog current – DAQ can be used with other sensors Pressure sensor: SensibleUI, $399. However, currently sold out and need to wait to order. Reasons: – Other sensors are >$5k or are not interfacable/don’t show a pressure distribution

19. Other goals Order the pressure sensor Create a contour plot of force generated from the pressure sensor Actuate the mechanical system and control it via LabVIEW Create publication

20. Questions?