Data Sheet

ManualsBrandsImages Scientific ManualsStretch & Bend SensorsImages Scientific 2" Flexible Stretch Sensor

Stretch Sensor

The Stretch Sensor is a unique sensor that

changes resistance when stretched.

Some applications for the Stretch Sensor are:

* Robotics

* Biometric displacement reading

* VR Gloves and VR suits

* Physics applications & experiments

* Feedback sensor for air muscles

Images Scientific Instruments Inc.

109 Woods of Arden Road

Staten Island NY 10312

Telephone 718-966-3694

Fax 718-966-3695

Internet http://www.imagesco.com

Summary of content (6 pages)

PAGE 1
Stretch Sensor TM The Stretch Sensor is a unique sensor that changes resistance when stretched. Some applications for the Stretch Sensor are: * * * * * Robotics Biometric displacement reading VR Gloves and VR suits Physics applications & experiments Feedback sensor for air muscles Images Scientific Instruments Inc. 109 Woods of Arden Road Staten Island NY 10312 Telephone 718-966-3694 Fax 718-966-3695 Internet http://www.imagesco.
PAGE 2
The Stretch Sensor is a unique polymer component that changes resistance when stretched. An un stretched sensor has a nominal resistance of 1000 ohms per linear inch. As the stretch sensor is stretched the resistance gradually increases. When the sensor is stretched 50 % its resistance will approximately double to 2.0 K-ohms per inch. The stretch sensor is a new way to measure stretch, displacement and force. The sensor is a flexible cylindrical cord .060-.
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Graph 1 3
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The POT command allows users to read resistive components and sensors. POT Pin, Scale, Var The commands reads a resistive device on one of the I/O Pin specified in the command. Resistance is measure by timing the discharge of a capacitor through the resistive component (typically 5-50K). Scale is used to adjust the resistorcapacitor (RC) constant. Setting Scale: Scale is determined experimentally. Set the sensor to be a maximum resistance and read the outputted value with the scale set to 255.
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'Stretch Sensor Test for Scale b VAR BYTE start: Pot 1, 255, b 'Read RB1 (read scale) SerOut 0,4, [254,1] 'Clear LCD screen Pause 2 SerOut 0,4, [" ",#b] 'Send POT value on Pin RB0 Pause 100 'wait .1 second GoTo start 'do it again The program above provided a number output of 160, which is used in the next program to provide the best range of values.
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Program Notes: The program outputs the data at 2400 Baud – inverted, 8 bits, no parity, one stop bit to the LCD display. The LCD displays a numeric value between 0 and 255 that represents the resistance of the stretch sensor in real time.