| 摘要 |
An anti-car jacking/theft device for detecting an unauthorized person who is attempting to operate a vehicle and activating an alarm including a measurement mechanism adapted to be coupled to a driver's seat of a vehicle for transmitting an input weight signal indicating a person's weight; a key receiving mechanism adapted for receiving a user-supplied key and transmitting a reset signal when the key is activated, a set signal when the key is de-activated, and a key status ready signal having one mode indicating that the key receiving mechanism is active and another mode indicating that the key means is inactive; control circuitry for receiving the input weight signal from the measurement means and the reset signal, set signal, and key status ready signal from the key receiving means, comparing the input weight signal with a resident reference weight signal and a resident input threshold signal with the control circuitry having one mode for transmitting an alarm command signal indicating that an unauthorized weight is detected at the measurement means and another mode for transmitting an alarm command indicating that the key receiving means is inactive; alarm mechanism for receiving the alarm command signal and activating an alarm; and a power source for energizing and de-energizing the measurement circuitry, key receiving circuitry, and control circuitry. |
