| 摘要 |
PURPOSE:To enable the learning of distance to an obstacle clearly, by arranging corner sonar sensors at four corners of a body to detect distance to the obstacle. CONSTITUTION:Corner sonar sensors 2-5 are arranged at four corners of a body 1 to detect distances to an obstacle. In a combination meter 6, an oil pressure gauge 7, a fuel gauge 8, a voltmeter 9 and a water temperature gauge 10 are arranged corresponding to the layout of the corner sonar sensors 2-5. Detection signals of the corner sonar sensors 2-5 are inputted into a distance detecting section 21 of a control unit 20 and a distance signal is inputted into a switching section 22. Respective distances to the obstacle from four corners are visually displayed on respective instruments 7-10 simultaneously.
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