Vehicle detector with audible call signal indicator

作者： Sr. Thomas R. Potter

DOI:

关键词: Engineering 、 Liquid-crystal display 、 Signal 、 Detector 、 Tone (musical instrument) 、 LED display 、 Signal generator 、 Electrical engineering 、 Vehicle detector

摘要: A method and apparatus for visually audibly verifying Call signal generation in a vehicle detector. generated drives visible display, such as discrete LED, an LED display composed of multiple LEDs, or LCD display. The same also controls the operation audible tone generator so that is whenever detector generates signal. permits single technician field to check correct response movement vicinity associated loop