| 摘要 |
PROBLEM TO BE SOLVED: To prevent an electronic apparatus from being operated by a driver in a sudden accelerating operation, a sudden braking operation and a sudden curving operation. SOLUTION: Accelerations in the front-and-reat direction and the right-and- left direction of a vehicle are detected by a detector 1 and a detector 2. Their magnitude and their direction are found by a vector computing unit 5. Their values are compared with a threshold value by a comparator 7. When the detected accelerations are larger than the threshold value, a judgment device 11 generates a warning signal (a) so as to be warned by a warning display 12. When an apparatus is operated before the detection of the accelerations, a control part 16 in an apparatus body 14 generates a signal (b) which invalidates its operating contents, and the operating contents are stored in a storage part 17. When the accelerations become smaller than the threshold value, the operating contents which are stored in the storage part 17 are executed. |
