A New, Adaptable, Optical High-Resolution 3-Axis Sensor
AbstractThis article presents a new optical, multi-functional, high-resolution 3-axis sensor which serves to navigate and can, for example, replace standard joysticks in medical devices such as electric wheelchairs, surgical robots or medical diagnosis devices. A light source, e.g., a laser diode, is affixed to a movable axis and projects a random geometric shape on an image sensor (CMOS or CCD). The downstream microcontroller’s software identifies the geometric shape’s center, distortion and size, and then calculates x, y, and z coordinates, which can be processed in attached devices. Depending on the image sensor in use (e.g., 6.41 megapixels), the 3-axis sensor features a resolution of 1544 digits from right to left and 1038 digits up and down. Through interpolation, these values rise by a factor of 100. A unique feature is the exact reproducibility (deflection to coordinates) and its precise ability to return to its neutral position. Moreover, optical signal processing provides a high level of protection against electromagnetic and radio frequency interference. The sensor is adaptive and adjustable to fit a user’s range of motion (stroke and force). This recommendation aims to optimize sensor systems such as joysticks in medical devices in terms of safety, ease of use, and adaptability. View Full-Text
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Buchhold, N.; Baumgartner, C. A New, Adaptable, Optical High-Resolution 3-Axis Sensor. Sensors 2017, 17, 254.
Buchhold N, Baumgartner C. A New, Adaptable, Optical High-Resolution 3-Axis Sensor. Sensors. 2017; 17(2):254.Chicago/Turabian Style
Buchhold, Niels; Baumgartner, Christian. 2017. "A New, Adaptable, Optical High-Resolution 3-Axis Sensor." Sensors 17, no. 2: 254.
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