Speed Measuring Device for Moving Bodies

摘要

A speed measuring device has an antenna with directionality that transmits a transmission wave toward the moving body based on a transmission signal supplied from a Doppler sensor, and receives a reflected wave reflected by the moving body to generate and supply to the Doppler sensor a reception signal. An imaginary line extending along a direction in which a gain of the antenna is maximized is defined as an imaginary axis that indicates an orientation direction of the antenna. An antenna supporting unit is provided on a housing and supports the antenna so an inclination of the imaginary axis can be altered. A display is provided on an upper surface of the housing with a flat display surface of a rectangular shape facing upward and displays various display contents including the movement speed of the moving body on the display surface.

主权项

1. A speed measuring device for a moving body, comprising:
an antenna having directionality that transmits a transmission wave toward the moving body based on a supplied transmission signal and generates a reception signal by receiving a reflected wave reflected by the moving body; a Doppler sensor that supplies the transmission signal to the antenna and generates a Doppler signal having a Doppler frequency based on the reception signal; a measurement processing unit that calculates a movement speed of the moving body based on the Doppler signal; a display that displays display content including the calculated movement speed; a housing that holds at least the display; and an antenna supporting unit provided on the housing that supports the antenna so that an inclination of an imaginary axis can be altered when an imaginary line extending along a direction where a gain of the antenna is maximized is defined as the imaginary axis that indicates an orientation direction of the antenna.