2012

Position Sensor

The iC-LO from iC-Haus GmbH (Bodenheim, Germany) is a triangulation position sensor designed as a system-on-chip for the assembly of diffuse reflective photoelectric sensors with switching outputs. Integrated functions include the photodiodes, LED driver, microcontroller interface, signal conditioning circuitry, and signal filter unit. The optical array is divided into one near diode, 127 middle diodes, and one far diode. Two AC amplifiers are integrated together with the optical array to enable high interference and ambient light suppression, and a dynamic range of up to 100 dB. Using a filter glass, an ambient light suppression of up to 100 kLux can be obtained.

altThe number of averaged measurements can be set to digitally filter the signals with measurement rates of up to 13.9 kHz. The integrated low-side LED driver generates transmitting pulse currents of up to 1.2 A. An external laser diode driver can also be activated for laser triangulation. The pulse duration of the illumination signal can be set through the SPI interface. It operates from 4.5 V to 5.5 V in an operating temperature range of -40 to +85 °C.


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