| 摘要 |
A driving behavior monitoring system mountable within a vehicle and having a board member on which are mounted first and second accelerometer devices for measuring acceleration in mutually orthogonal directions. Each accelerometer device includes an arm member in the form of a generally L-shaped crank or elbow. The crank is pivotable at the elbow joint thereof, and one arm of the crank is provided with a weight at the end thereof with the other arm having the free end thereof attached to one end of a tension spring, the other end of which is fixedly attached to the board member. A pair of electrical switch contacts are positioned in spaced relation on either side of the spring, with each contact being placed at approximately the same distance from the axial centerline of the spring. Movement of the weight translates to deflection of the spring in a direction orthogonal to its axis. The spring is in circuit relation with a suitable power source and upon deflection of the spring, contact of the spring is made with one of the switch contacts, each of which is connected to its own terminal of electrical circuitry which records the closures. The circuitry includes a keypad, a segmented LED display and a microcontroller which responds to the accelerometer devices for counting the number of each such closure of the individual switches in accordance with the direction of force caused by erratic maneuvers. Provision is made in the circuitry for password access, resetting and detection of removal or disablement of the circuitry.
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