Unitary sensor assembly for automotive vehicles

• US 5,242,190 A
• Filed: 12/24/1990
• Issued: 09/07/1993
• Est. Priority Date: 12/24/1990
• Status: Expired due to Fees

• Current Assignee: Visteon Global Technologies Incorporated (Visteon Corporation)
• Original Assignee: Ford Motor Company
• Inventors: Morris, Peter T.
• Primary Examiner(s): Focarino, Margaret A.
• Assistant Examiner(s): DICKSON, PAUL N
• Application Number:
  US07/632,820
• Time in Patent Office: 988 Days
• Field of Search: 280/707, 280/6.12, 280/DIG. 1, 280/112.2, 280/703, 307/10.1
• US Class Current: 280/5.503
• CPC Class Codes: B60G 17/019 characterised by the type of sensor or the arrangement thereof B60G17/01941 takes precedence
• CPC Class Codes: B60G 2204/116 Sensors coupled to the suspension arm
• CPC Class Codes: B60G 2400/102 vertical
• CPC Class Codes: B60G 2400/20 Speed
• CPC Class Codes: B60G 2400/252 vertical
• CPC Class Codes: B60G 2401/00 Indexing codes relating to the type of sensors based on the principle of their operation
• CPC Class Codes: B60G 2401/12 Strain gauge
• CPC Class Codes: B60G 2401/172 Hall effect
• CPC Class Codes: B60G 2600/60 Signal noise suppression; Electronic filtering means
• CPC Class Codes: B60G 2600/604 low pass

Abstract

A unitary sensor assembly for use in an automotive vehicle having a source of electrical power, a body and an automotive suspension relatively moveable with respect to the body is disclosed, the assembly comprises a sensor for determining operational position on the suspension with respect to the body as well as the acceleration of the body of the vehicle with respect to the surface upon which the vehicle is traveling from a common point on the vehicle. The assembly of the present invention further includes an electrical power transmission circuit mounted to the first sensor and electrically interconnecting the first and second sensors for transmitting electrical power from the electrical power source of the vehicle to the sensor. An apparatus for controlling an adjustable suspension unit is also disclosed comprising a unitary sensor assembly of the present invention as well as a processor for receiving a series of signals generated from the sensor and a control for adjusting the suspension unit.

Claims

1. A unitary sensor assembly for use in an automotive vehicle having a source of electrical power, a body and an automotive suspension relatively movable with respect to said body, comprising:

a circuit board electrically connected to said power source and operative to receive an electrical signal therefrom, said circuit board having an oscillator circuit, an electrical input protection circuit and an electrical power supply circuit;

first sensor means for receiving said electrical signal from said circuit board and for determining the operational position of said suspension with respect to said body, said means being electrically connected to said circuit board and including a first sensor component movable with respect to a second sensor component and means for attaching said first sensor component to said suspension and said second sensor component to said body such that said first and second sensor components will be caused to move with respect to one another when said suspension moves with respect to said body; and

second sensor means for determining the acceleration of said body of said vehicle with respect to the surface upon which said vehicle is traveling, said second sensor means being operative to receive said electrical signal from said circuit board.

2. An assembly according to claim 1, wherein said second sensor means is mounted to said second sensor component of said first sensor means.

3. An assembly according to claim 1, wherein said circuit board is mounted to said second sensor component of said first sensor means.

4. An assembly according to claim 1, wherein said first sensor means comprises a linear height sensor.

5. An assembly according to claim 1, wherein said first sensor means comprises a rotary height sensor.

6. An assembly according to claim 1, wherein said second sensor means comprises an accelerometer.

7. A unitary sensor assembly for use in an automotive vehicle having a source of electrical power, a body and an automotive suspension relatively movable with respect to said body, comprising:

a height sensor for determining the operational position of said body relative to said suspension, said height sensor including a first sensor component movable with respect to a second sensor component, said first sensor component being attached to said suspension and said second sensor component being attached to said body such that said first and second sensor components will be caused to move with respect to one another when said suspension moves with respect to said body;

an accelerometer for determining the acceleration of the body of the vehicle with respect to the surface upon which the vehicle is traveling, said accelerometer being attached to said second sensor component of said height sensor; and

a circuit board interposed between said accelerometer and said second sensor component, said circuit board being electrically connected to said power source and being operative to receive an electrical signal therefrom, said circuit board including an oscillator circuit, an electrical input protection circuit and an electrical power supply circuit operative to condition said electrical signal and transmit said electrical signal to both said height sensor and said accelerometer.

8. A sensor assembly according to claim 7, wherein said second sensor component includes a bracket attached to the outer periphery thereof, said bracket being configured to receive said circuit board and said accelerometer therein.