| 摘要 |
PURPOSE:To accurately and securely obtain information necessary for traveling by providing an azimuth detecting means, a distance detecting means, an arithmetic means, etc. CONSTITUTION:This device is provided with the azimuth detecting means which detects the traveling direction of a vehicle, the distance detecting means which detects the traveling distance of the vehicle, and the arithmetic means which inputs signals from the azimuth detecting means and azimuth detecting means and calculates the linear distance from a certain point to another point. Further, a display means is provided which displays the traveling distance calculated by the arithmetic means. Thus, the directions of the east and west, and north and south, the angle from a certain direction, etc., are detected and the traveling distance of the vehicle is detected from the rotating speed of a tire to obtain the accurate and secure information required for the traveling. |
