Tuesday, June 25, 2024

Development Board With Hall & Angle Sensor

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PVL4m from iC-Haus is a newly released development board that combines an angle sensor and a hall sensor in the same module. The PVL4m performs the evaluation of both sensors by the 26-bit encoder signal processor iC-TW29 with an integrated EEPROM. The development board features a super capacitor which allows for non-disruptive revolution counting by iC-PVL for several hours without any external supply.

According to the company, the PVL4M is the first commercial board capable of evaluating a TMR angle sensor in combination with the Hall sensor for absolute angle measurement and revolution counting at the free shaft end, the so-called end-of-shaft position. A new 26-bit encoder signal processor iC-TW29 with an integrated EEPROM enables the evaluation of the two sensors. The sine/cosine signals from the TMR sensor are processed in the chip, interpolated, and then output with an arbitrarily selectable single turn resolution, e. g. via BiSS interface with an angular resolution of 18 bits and 24 bits revolution

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 The data output from the shaft angle comes with a small delay of only 1.5 μs, which is comparable to the delays present in the optical encoders, making it fast a precise. Furthermore, the automatic correction of dynamic signal errors ensures high measurement accuracy over temperature or with the axial backlash of the motor shaft. The high signal quality of the TMR sensor enables better repeatable angle measurements with low hysteresis. Position output via SPI or as incremental quadrature signals with an index at any arbitrary FlexCount resolution from 1 to 32,768 pulses is also possible.


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