Anti-theft device for an automobile
First Claim
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1. An anti-theft device for an automobile comprising:
- intrusion detection means for detecting an abnormal intrusion into the automobile and for generating an intrusion signal;
disconnection detection means for detecting disconnection of a main battery of the automobile from the electrical equipment supplied thereby and for generating a disconnection signal;
disable means for disabling a control circuit of an engine of the automobile in response to the intrusion signal or the disconnection signal; and
release means for halting the disable means from disabling the control circuit when input data provided to the release means are identical with preset data.
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Abstract
An anti-theft device for an automobile with high reliability is proposed. The device detects an intrusion and a battery disconnection and disables the engine. The device is powered by a battery prepared exclusively for the device besides the main battery of the automobile. The battery is mounted on the same board as the device, therefore increasing the reliability of that device. The device is simple to operate. When the driver leaves the car and the doors are locked, the anti-theft device is activated. No additional operation is required from the driver. The anti-theft device is even more reliable with the use of a key which has a bar-code printed on its surface.
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Citations
4 Claims
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1. An anti-theft device for an automobile comprising:
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intrusion detection means for detecting an abnormal intrusion into the automobile and for generating an intrusion signal; disconnection detection means for detecting disconnection of a main battery of the automobile from the electrical equipment supplied thereby and for generating a disconnection signal; disable means for disabling a control circuit of an engine of the automobile in response to the intrusion signal or the disconnection signal; and release means for halting the disable means from disabling the control circuit when input data provided to the release means are identical with preset data. - View Dependent Claims (2, 3, 4)
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Specification