公开(公告)号：US20190323876A1

公开(公告)日：2019-10-24

申请号：US16386617

申请日：2019-04-17

Applicant: Methode Electronics, Inc.

Inventor： Assed Mir ,  Antony Brough

IPC: G01F23/24 ,  H01H35/18

Abstract: An active three-wire fluid level sensor employed in an application designed for a two-wire switch is disclosed. A fluid level sensor assembly includes a fluid level sensor including first, second, and third wires. The third wire carries an output signal configured to fluctuate between a low output signal level and a high output signal level. The fluid level sensor assembly also includes a supply modulation driver electrically connected to the third wire. The fluid level sensor, via the first, second, and third wires, is configured to serve as an input to a two-wire input electronic control unit (ECU). A method of operating a two-wire circuit function by supply modulation is also disclosed.