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Kit overview The stretch sensor kit enables you to quickly get hands on with Electroactive Polymer (EAP) capacitive stretch sensors. The kit can be used for unobtrusive monitoring of soft structures such as the human, textiles and rubbers. It is ideal for prototyping wearable motion capture or for characterising the sensors with a view to product integration. Contents The stretch sensor kit includes:
• Two stretch sensors (see stretch sensor datasheet below), • One measurement electronics (see electronics datasheet below), • Wires for sensors and PC connections, • Software displaying and saving real-‐time measurement data on a PC.
System diagram
www.leaptechnnology.com [email protected] LEAP Technology ApS ! Diplomvej 381 ! 2800 Kgs. Lyngby ! Denmark
Overview – Stretch Sensor Kit (Preliminary)
Uniqueness Soft – Unobtrusively measuring movement and motion. Light – 7x lighter than metal sensors. Robust – highly robust against shock, overload and misalignment. Versatile – highly versatile in shape and sizes.
Elastomer stretch sensor (04D0010) Made from high quality elastomer materials, the LEAP Technology stretch sensor is a versatile, highly elastic capacitive strain gauge.
• Highly stretchable sensor enables unobtrusive motion capture of human, machines, and complex surfaces;
• Capacitive sensing characteristic ensures accurate and repeatable measurements;
• Easy textile integration due to its low profile and textile based cabling; • Inherently tolerant to shock, vibration and misalignment; • Minimum response to applied surface pressure; • Washable.
Dimensions (mm)
Note: Stretchable zone thickness: 0.4mm Working principle
Specifications
Parameter Value unit Maximum stretch 80 mm Capacitance at rest* 2.5 nF Capacitance at full stretch* 3.5 nF Load at maximum stretch* 3 N Weight* 6 grams
*Indicative figures. These sensors are highly customisable in shape, size, stretch, sensitivity, connections and encapsulation type. Please contact us for custom versions and specific product development and testing needs. www.leaptechnnology.com [email protected] LEAP Technology ApS ! Diplomvej 381 ! 2800 Kgs. Lyngby ! Denmark
Datasheet – Stretch Sensor (Preliminary)
Uniqueness Soft – Unobtrusively measuring movement and motion. Light – 7x lighter than metal sensors. Robust – highly robust against shock, overload and misalignment. Versatile – highly versatile in shape and sizes.
Capacitive sensor electronics (004T0014) This easy to use electronics box is designed for capacitive sensor measurements. The included circuit and software is capable of measuring capacitors with variable capacitance as well as variable equivalent serial resistance (ESR), thus making it ideal for electroactive polymer (EAP) sensor measurements. Due to its universal measurement technique, this device can measure EAP sensors of LEAP Technology as well as those from third parties. The circuit is supplied with proprietary PC software that enables you to measure, save, and display real-‐time data. New versions of the electronics are planned to include two analogue output channels representing the sensor measurement in analogue format (0-‐5V) enabling you to transfer sensor measurements to a third device such as an Arduino board. Other customisation is also possible due to the versatile design and choice of on board microcontroller -‐ please enquire.
Dimensions (mm) and connectors
Inputs and outputs
Mini DIN Connector 2 (DIN 2) Function Sensors inputs Pin 1 Not used Pin 2 Not used Pin 3 EAP sensor 1 return Pin 4 EAP sensor 2 return Pin 5 EAP sensor 1 signal Pin 6 EAP sensor 2 signal
Technical specifications
Item Value Description Power supply 5V Power is supplied from PC via DIN 1. EAP sensor input 2 inputs Via DIN 2. Digital output Digital sensors signals are transmitted via the mini DIN connector 1. Measurement range 0.1-‐10nF Software selectable Excitation frequency 100-‐800Hz Software selectable Digital update rate 0.1 – 800Hz Software selectable Averaging number n = 1-‐100 Software selectable Resolution 1pF Operation temperature 10-‐60°C
www.leaptechnnology.com [email protected] LEAP Technology ApS ! Diplomvej 381 ! 2800 Kgs. Lyngby ! Denmark
Datasheet – Sensor Electronics (Preliminary)