Method for controlling expansion of an air bag
First Claim
1. A method for controlling expansion of an air bag, the method comprising:
- (a) detecting a deceleration of a vehicle in a vehicle collision at a deceleration detector and applying the detected deceleration signal to a microcomputer;
(b) analyzing a collision waveform generated according to the deceleration signal and determining an impact degree of the vehicle at the microcomputer;
(c) temporarily stopping operation of the deceleration detector at the microcomputer while the deceleration of the vehicle is increasing;
(d) initializing an initial collision waveform while the operation of the deceleration detector is stopped, the initial collision waveform being inputted before the microcomputer stops the operation of the deceleration detector;
(e) re-operating the deceleration detector at the microcomputer, detecting again the deceleration of the vehicle at the deceleration detector, and applying the newly detected deceleration signal to the microcomputer to obtain a second collision waveform; and
(f) when the second collision waveform reaches a first set value, operating an air bag driving unit at the microcomputer to thereby expand the air bag;
whereby an expansion time of the air bag is controlled closely in conformance with a required time to fire (RTTF), thereby achieving a more stable expansion performance of the air bag.
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Accused Products
Abstract
The method for expanding an air bag includes the steps of: detecting a variation of a deceleration of a vehicle during a vehicle collision and applying the detected deceleration signal to a microcomputer. Analyzing a collision waveform generated according to the deceleration signal and determining an impact degree of the vehicle. Temporarily stopping an operation of the deceleration detector at the microcomputer. Initializing an initial collision waveform while the operation of the deceleration detector is stopped, the initial collision waveform being inputted before the microcomputer stops the operation of the deceleration detector. Re-operating the deceleration detector at the microcomputer, detecting again a variation of the deceleration of the vehicle at the deceleration detector, and applying the newly detected deceleration signal to the microcomputer. When the collision waveform, generated according to the applied deceleration signal, reaches a set value, activate an air bag driving unit at the microcomputer.
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Citations
10 Claims
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1. A method for controlling expansion of an air bag, the method comprising:
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(a) detecting a deceleration of a vehicle in a vehicle collision at a deceleration detector and applying the detected deceleration signal to a microcomputer; (b) analyzing a collision waveform generated according to the deceleration signal and determining an impact degree of the vehicle at the microcomputer; (c) temporarily stopping operation of the deceleration detector at the microcomputer while the deceleration of the vehicle is increasing; (d) initializing an initial collision waveform while the operation of the deceleration detector is stopped, the initial collision waveform being inputted before the microcomputer stops the operation of the deceleration detector; (e) re-operating the deceleration detector at the microcomputer, detecting again the deceleration of the vehicle at the deceleration detector, and applying the newly detected deceleration signal to the microcomputer to obtain a second collision waveform; and (f) when the second collision waveform reaches a first set value, operating an air bag driving unit at the microcomputer to thereby expand the air bag; whereby an expansion time of the air bag is controlled closely in conformance with a required time to fire (RTTF), thereby achieving a more stable expansion performance of the air bag. - View Dependent Claims (2, 3, 4, 5)
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6. A method for controlling expansion of an air bag, comprising:
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detecting an initial deceleration signal of a vehicle from a deceleration detector during a vehicle collision; applying the initial deceleration signal to a microcomputer; analyzing the initial deceleration signal in the microcomputer; stopping operation of the deceleration detector; clearing the initial deceleration signal from the microcomputer; re-operating the deceleration detector to generate a new deceleration signal; applying the new deceleration signal to the microcomputer; analyzing the new deceleration signal in the microcomputer; and deploying an air bag if the new deceleration signal reaches a set value; whereby an expansion time of the air bag is controlled closely in conformance with a required time to fire (RTTF), thereby achieving a more stable expansion performance of the air bag. - View Dependent Claims (7, 8, 9, 10)
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Specification