Control system for a plurality of vehicle safety devices
First Claim
1. A control system for first and second vehicle safety devices, comprising:
- (a) a feeder circuit having a power source, first and second actuating elements of said vehicle safety devices being arranged in parallel relation to each other in said feeder circuit, input ends of said first and second actuating elements being connected to said power source, and output ends of said first and second actuating elements being connected to each other to form a connecting point;
(b) a collision judging means for judging whether or not a vehicle collision has occurred so that a trigger signal is outputted therefrom when said collision judging means judges that a vehicle collision has occurred;
(c) switching means arranged in said feeder circuit, said switching means being turned ON responsive to said trigger signal to supply electric current from said power source to said actuating elements, thereby actuating said vehicle safety devices;
(d) a check current supplying circuit for supplying check current from said input end of said first actuating element to said input end of said second actuating element via said connecting point, said check current serially flowing through said first and second actuating elements; and
(e) a malfunction judging means for comparing a voltage generated between said input ends of said first and second actuating elements with a predetermined allowable range of voltage so that a malfunction detection signal is outputted from the malfunction judging means when said voltage generated between said input ends is outside said predetermined allowable range of voltage.
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Accused Products
Abstract
A control system for a plurality of vehicle safety devices has a feeder circuit and a check current supplying circuit. A plurality of actuating elements are arranged in the feeder circuit in parallel relation, and at the same time, they are arranged in the check current supplying circuit in serial relation. When a switching element is turned ON in accordance with a trigger signal coming from a collision judging circuit, an electric current flowing through the feeder circuit is caused to flow through the actuating elements in parallel. The check current flows to the actuating elements in series. The voltage generated between opposite ends of the serial circuit of the actuating elements in the check current supplying circuit is compared with a predetermined allowable range of voltage in a malfunction judging current, and when the voltage between the opposite ends is outside the predetermined allowable range of voltage, a malfunction detecting signal is outputted from the malfunction judging circuit.
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Citations
12 Claims
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1. A control system for first and second vehicle safety devices, comprising:
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(a) a feeder circuit having a power source, first and second actuating elements of said vehicle safety devices being arranged in parallel relation to each other in said feeder circuit, input ends of said first and second actuating elements being connected to said power source, and output ends of said first and second actuating elements being connected to each other to form a connecting point; (b) a collision judging means for judging whether or not a vehicle collision has occurred so that a trigger signal is outputted therefrom when said collision judging means judges that a vehicle collision has occurred; (c) switching means arranged in said feeder circuit, said switching means being turned ON responsive to said trigger signal to supply electric current from said power source to said actuating elements, thereby actuating said vehicle safety devices; (d) a check current supplying circuit for supplying check current from said input end of said first actuating element to said input end of said second actuating element via said connecting point, said check current serially flowing through said first and second actuating elements; and (e) a malfunction judging means for comparing a voltage generated between said input ends of said first and second actuating elements with a predetermined allowable range of voltage so that a malfunction detection signal is outputted from the malfunction judging means when said voltage generated between said input ends is outside said predetermined allowable range of voltage. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A control system for first and second vehicle safety devices, comprising:
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(a) a feeder circuit having a power source, first and second actuating elements of said vehicle safety devices being arranged in parallel relation to each other in said feeder circuit, input ends of said first and second actuating elements being connected to each other to form a connecting point, said connecting point being connected to said power source; (b) a collision judging means for judging whether or not a vehicle collision has occurred so that a trigger signal is outputted therefrom when said collision judging means judges that a vehicle collision has occurred; (c) switching means arranged in said feeder circuit, said switching means being turned ON responsive to said trigger signal to supply electric current from said power source to said actuating elements, thereby actuating said vehicle safety devices; (d) a check current supplying circuit for supplying check current from an output end of said first actuating element to an output end of said second actuating element via said connecting point, said check current serially flowing through said first and second actuating elements; and (e) a malfunction judging means for comparing a voltage generated between said output ends of said first and second actuating elements with a predetermined allowable range of voltage so that a malfunction detection signal is outputted from the malfunction judging means when said voltage generated between said output ends is outside said predetermined allowable range of voltage. - View Dependent Claims (8, 9, 10, 11, 12)
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Specification