Control system for passenger protecting apparatus
First Claim
1. A control system for a passenger protecting apparatus, comprising:
- means for detecting vehicle deceleration values;
means for calculating a deceleration dispersion value on the basis of the detected deceleration values;
means for deciding whether or not the passenger protecting apparatus is to be activated on the basis of the calculated deceleration dispersion value; and
drive and control means for activating the passenger protecting apparatus when said deciding means decides the activation of the passenger protecting apparatus.
1 Assignment
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Accused Products
Abstract
A control system for a passenger protecting apparatus includes: a sensor (100) for detecting vehicle deceleration values; a calculating section (101) for calculating a deceleration dispersion value (Bu) on the basis of the detected deceleration values; a deciding section (103) for deciding whether the passenger protecting apparatus is activated or not, on the basis of the calculated deceleration dispersion value; and a drive and control section (104) for activating the passenger protecting apparatus when the activating section decides the activation of the passenger protecting apparatus (102). The control system can activate an air bag module or seat belt reliably in any collision modes by a simple adjustment.
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Citations
18 Claims
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1. A control system for a passenger protecting apparatus, comprising:
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means for detecting vehicle deceleration values; means for calculating a deceleration dispersion value on the basis of the detected deceleration values; means for deciding whether or not the passenger protecting apparatus is to be activated on the basis of the calculated deceleration dispersion value; and drive and control means for activating the passenger protecting apparatus when said deciding means decides the activation of the passenger protecting apparatus. - View Dependent Claims (3, 4)
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2. A control system for a passenger protecting apparatus, comprising:
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means for detecting vehicle deceleration values; means for calculating a sum total of squares of differences between the detected deceleration values and an averaged deceleration value obtained within a predetermined time period, on the basis of the detected deceleration values; means for deciding whether or not the passenger protecting apparatus is to be activated on the basis of the calculated sum total value; and drive and control means for activating the passenger protecting apparatus when said deciding means decides the activation of the passenger protecting apparatus. - View Dependent Claims (5, 6, 16, 17, 18)
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7. A method of activating a passenger protecting apparatus, comprising the steps of:
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detecting vehicle deceleration values g at sampling times; detecting vehicle collision on the basis of the detected deceleration values; calculating deceleration status Bu by the steps of; calculating a sum total value L1 of deceleration values detected at previous sampling times; calculating an average deceleration value L on the basis of the calculated sum total deceleration value L1 and the current number N of samples; calculating a sum total value S of squares of differences between the calculated averaged deceleration value L and respective detected deceleration values g; and calculating a deceleration dispersion value Bu on the basis of the calculated sum total value S and the number T of samples; comparing the calculated deceleration dispersion value Bu with a predetermined threshold value THL; and if the calculated deceleration dispersion value Bu exceeds the threshold THL, activating the passenger protecting apparatus.
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8. A method of activating a passenger protecting apparatus, comprising the steps of:
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detecting vehicle deceleration values g at sampling times; detecting vehicle collision on the basis of the detected deceleration values; calculating deceleration status as a dispersion value of the deceleration values by the steps of; calculating a sum total value L1 of deceleration values detected at previous sampling times; calculating an average deceleration value L on the basis of the calculated sum total deceleration value L1 and current number of samples N; and calculating a deceleration dispersion value as a sum total value Bu1 of squares of differences between the calculated average deceleration value L and respective detected deceleration values g; and comparing the calculated deceleration dispersion value Bu1 with a predetermined threshold value THL1; and if the calculated deceleration dispersion value Bu1 exceeds the threshold THL1, activating the passenger protecting apparatus.
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9. A method of activating a passenger protecting apparatus, comprising the steps of:
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detecting vehicle deceleration values g at sampling times; detecting vehicle collision on the basis of the detected deceleration values; calculating deceleration status by the steps of; calculating a sum total value L1 of deceleration values detected at previous sampling times; calculating an average deceleration value L on the basis of the calculated sum total deceleration value L1 and a current number of samples N; calculating a sum total value S of squares of differences between the calculated averaged deceleration value L and respective detected deceleration values g; and calculating a deceleration dispersion value as an integration value Bu2 of the calculated sum total values S with respect to time; comparing the calculated deceleration dispersion value Bu2 with a predetermined threshold value THL2; and if the calculated deceleration dispersion value Bu2 exceeds the threshold THL2, activating the passenger protecting apparatus. - View Dependent Claims (10)
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11. A control system for activating a passenger protecting apparatus on the basis of vehicle deceleration values detected in case of collision, comprising:
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means for detecting the vehicle deceleration values; means for calculating a dispersion-based value of the detected vehicle deceleration values; means for judging whether the dispersion-based value outputted by said calculating means exceeds a threshold value; and means responsive to said judging means for activating the passenger protecting apparatus when the dispersion-based value is judged by said judging means to exceed the threshold value. - View Dependent Claims (12, 13, 14, 15)
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Specification