| 摘要 |
PURPOSE:To visually set the attached position and angle of a sensor, by arranging pairs of ultrasonic oscillators and luminous diodes as matrix. CONSTITUTION:The pairs of ultrasonic oscillators 2, 2a and luminous diodes 3 are arranged as matrix on a mat 1. The ultrasonic oscillator 2a detects ultrasonic waves from the sensor 9 and is used for such as an automatic door. The attached position and angle of the sensor 9 can be correctly set by observing the distribution of light-on of the luminous diodes 3. The wave reception level of the ultrasonic oscillator 2 at the time of light-on of the luminous diode 3 is variably set by an operating box 4. The wave reception level of the ultrasonic oscillator 2a located on the central part of the mat 1 is displayed on a meter 5. |
