SONIC WAVE PINCH DETECTION SYSTEM AND METHOD FOR A MOVABLE PANEL
First Claim
1. A pinch detection system, comprising:
- a deformable and resilient channel;
a sonic wave transmitter at one end of the channel having a predetermined output;
a sonic wave receiver at a second end of the channel; and
a controller connected to the transmitter and receiver;
wherein the controller selectively activates the transmitter and the controller generates a command in response to a predetermined attenuation of sonic wave input from the sonic wave receiver.
1 Assignment
0 Petitions
Accused Products
Abstract
A pinch detector for a movable panel is provided having a deformable and resilient channel; a sonic wave transmitter at one end of the channel having a predetermined output; a sonic wave receiver at a second end of the channel; and a controller connected to the transmitter and receiver; wherein the controller selectively activates the transmitter and generates a command in response to a predetermined attenuation of sonic wave input from the sonic wave receiver. The predetermined output of the sonic wave transmitter is in the range of about 30 to 50 kHz at a range of about 3 to 24 volts, but is preferably about 40 kHz at about 5 volts. The deformable and resilient channel can be disposed within a sealing element of a movable panel. Optionally, the sonic wave can be modulated. Compositions for the sonic tube can include latex, rubber, EPDM, foam, combinations thereof, and the like.
-
Citations
14 Claims
-
1. A pinch detection system, comprising:
-
a deformable and resilient channel; a sonic wave transmitter at one end of the channel having a predetermined output; a sonic wave receiver at a second end of the channel; and a controller connected to the transmitter and receiver; wherein the controller selectively activates the transmitter and the controller generates a command in response to a predetermined attenuation of sonic wave input from the sonic wave receiver. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. A method to detect pinching of a deformable and resilient channel, comprising:
-
generating a sonic wave at one end of the channel at a predetermined output; sensing the sonic wave at a second end of the channel at a predetermined input; and outputting a signal in response to a predetermined attenuation of the sensed sonic wave. - View Dependent Claims (10, 11, 12, 13, 14)
-
Specification