The new digital throttle position sensor will use a Single Edge Nibble Transmission (SENT) protocol. Engineers use the term “one nibble” to refer to the transmission of four bits of data. In this case, one data nibble will be transmitted with each pulse.
First approved by SAE in 2006, the SENT protocol was created for the transmission of accurate, high-resolution sensor data to an electronic control unit. It is a simpler, low-cost alternative to Controller Area Network (CAN) or Local Interconnect Network (LIN) digital buses and replaces analog sensors.
“Unlike analog transmissions, where signals can be altered, the SENT protocol allows for a more robust signal transmission,” said Dr. Martin Fischer, president of Hella’s Corporate Center USA and Hella Electronics Corporation.
The SENT protocol permits compact packaging. Two signals can be transmitted over a single wire, reducing the need for additional cables and cutting costs.
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