Apparatus for sensing position of vehicle seat
AssigneeTyco Electronics AMP Korea Co., Ltd.
InventorsCheol-Seob Lee, Seok-II Kim, Dug-Su Yang, You-Sik Choi
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Abstract
An apparatus for detecting a vehicle seat position is disclosed. The apparatus includes a hall sensor for detecting a target position according to a flux variation; a first power-supply unit for activating the hall sensor in an active period of a received drive-voltage pulse; and a second power-supply unit for providing an auxiliary power-supply signal to activate the hall sensor in an inactive period of the drive-voltage pulse. Therefore, the apparatus can effectively address two-pin hall sensor's problems caused by hysteresis characteristics.
Claims23
An apparatus for detecting a vehicle seat position comprising:
- a hall sensor for detecting a target location according to a flux variation;
- a first power-supply unit for activating the hall sensor in an active period of a received drive-voltage pulse;
- and
- a second power-supply unit for providing an auxiliary power-supply signal to activate the hall sensor in an inactive period of the drive-voltage pulse.
An apparatus for detecting a vehicle seat position comprising:
- a hall sensor for detecting a target location according to a flux variation;
- an air-bag controller (ACU) for generating a drive-voltage pulse, transmitting the drive-voltage pulse to the hall sensor, and controlling the opening of an air-bag according to target detection information of the hall sensor;
- a first power-supply unit located between the ACU and the hall sensor such that it activates the hall sensor in an active period of the drive-voltage pulse;
- and
- a second power-supply unit for providing an auxiliary power-supply signal to activate the hall sensor in an inactive period of the drive-voltage pulse.
The apparatus according to claim 111 wherein the ACU calculates individual output data of a weight sensor, a vehicle speed sensor, an impact sensor, a head rest position sensor, a vehicle-seat back position sensor, and the hall sensor, and controls the air-bag opening operation according to the calculated result.
An apparatus for detecting a vehicle seat position comprising:
- a hall sensor for detecting a target location according to a flux variation;
- an air-bag controller (ACU) for generating a drive-voltage pulse, transmitting the drive-voltage pulse to the hall sensor, and controlling the opening of an air-bag according to target detection information of the hall sensor;
- a first power-supply unit located between the ACU and the hall sensor such that it activates the hall sensor in an active period of the drive-voltage pulse;
- and
- a second power-supply unit for providing an auxiliary power-supply signal to activate the hall sensor in an inactive period of the drive-voltage pulse, and including a generator and a second diode,
- wherein the generator transforms the voltage received from a vehicle battery into a fixed voltage suitable for activating the hall sensor, and outputs the transformed resultant voltage, and
- the second diode has its forward terminal connected to the generator, and its reverse terminal connected to the power-supply pin of the hall sensor.
Dependencies are inferred from the claim text.