Control device for a vehicle seat
AssigneeJohnson Electric S.A.
InventorsYi Yong WU, Ping LIU, Xiao Ming WANG
Life of this patent
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Abstract
A control device for a vehicle seat includes at least one motor for adjusting the seat, a sampling circuit for generating a ripple signal indicative of a rotational number of the motor, a converter for converting the ripple signal to a pulse signal which has the frequency proportional to the ripple signal, and a controller for counting the pulses in the pulse signal such that seat position information can be determined.
Claims17
A control device for a vehicle seat, comprising:
- an electric motor for adjusting the seat;
- a sampling circuit for generating a ripple signal indicative of a rotational number of the motor;
- a converter for converting the ripple signal to a pulse signal which has a frequency proportional to the frequency of the ripple signal;
- and
- a controller for counting pulses in the pulse signal such that seat position information can be determined.
A control device for a vehicle seat, comprising:
- at least two electric motors for adjusting the seat;
- a switch for selecting one of the at least two motors to operate;
- a sampling circuit for generating a ripple signal indicative of a rotational number of the selected motor;
- a converter for converting the ripple signal to a pulse signal having a frequency proportional to the frequency of the ripple signal;
- and
- a controller for counting pulses in the pulse signal such that seat position information can be determined.
A method for adjusting the position of a seat moved by at least one electric motor, comprising:
- converting a ripple signal indicative of a rotational number of the motor to a pulse signal which has a frequency proportional to the frequency of the ripple signal;
- and
- counting pulses in the pulse signal such that seat position information can be determined.
Dependencies are inferred from the claim text.