Radar Speed Displays: Options for Display Format and Power

摘要

In early 1997, the personnel at Precision Solar Controls introduced me to their radar speed display unit. They had taken one of their LED numeric displays and the radar from a police radar trailer and converted it into a stand-alone unit for fixed installations. At that time, they were producing few radar speed display units. Times change and so do the markets. Presently, there is a host of units to choose from for fixed applications. Do a Web search for "radar speed displays" and you'll get many hits. Today, radar speed displays come in many sizes and formats. Most feature an LED display, K-band radar and a processor board to interpret the radar information and display the speed of the vehicle in the field of view. Some units feature an advanced form of flip-disc technology coupled with LEDs for a hybrid display. Many include options such as offender/violator alerts which cause the displays to flash the digits, background or both, to inform drivers they are speeding. Some will even scroll or display the message "Slow" or "Slow Now" for the offender/violator warning. Units can be purchased either as a nominal 115/230VAC or 12VDC and in some cases, 24VDC.