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Thief warning device


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Although there be not case I encountered, there are many thieves of car.
Because I do not understand the thief when it encounters, the thief warning device was made.
The device is composed of 3 blocks.
Those are the thief warning device main board, the warning cancellation block by the touch sensor and the warning radio wave transmitter.
The warning radio wave transmitter sends the feeble radio wave in the case that the warning device operated and the position of the thieved car is confirmed.

The 1st step of operation of this device is send the warning sound in the car, when it passes 15 seconds after the engine started without cancel operation by touch sensor. Furthermore the horn is sounded, when 15 seconds pass without cancel. Abnormality is informed around by it.
Even that stops the engine instead of sounding the horn examined. However, I did not adopt because there be the possibility that becomes a traffic accident, in the case that suddenly the engine stopped.
The action of the warning device suspends if the engine is stopped.

The transmitter that sends the feeble F.M. radio wave as soon as the horn sounds causes to be operated. This does not suspend even if the engine is stopped.
It can not to stop if you do not operate the switch of the exclusive use. It might be able to use to search for the thieved car after it encountered.
Because it is the frequency that the radio wave can receive on the F.M. radio, even if there be not a special receiver the radio wave can be confirmed.
But, the radio wave reaches only in the range of the dozens meter from the car because it is a feeble radio wave.
Therefore, whether or not it is found with this does not understand.

The touch sensor attaches in the place which is touched easily when the car is started. It attaches in the place where touches with the casual action. ( may be you worry )


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