Vehicle speed measurement Рекламный

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This device finds vehicle speed by impulse principle and easy deludes particularly all foreign super-heterodyne radar- detectors because its short transmission detects as impulse noise by them. With help of this measurement system coming near and moving away vehicles speed can be found. Moreover two vehicles speed, distance to them and offence time can be memorized. It produces in different construction and functional modifications. All models provide the fastest aim detection from the flow and can be used together with video-clamp and personal computer. Measurement system working principle is based on Doppler effect when radio-detector signal frequency is changed after moving aim reflection. Moreover this frequency changing is proportional to moving aim speed. For spectrum analysis and defined frequencies values finding digital low-frequency processing apparatus based on Fourier transform is used. Analysis of full spectrum found after Fourier transform allows to detect the fastest aim speed from the flow. For aim moving direction selection two independent channels are used. Relative phase change finding between two channels Doppler signals helps to find aim moving direction. Two channels output signals comes to calculator where digitizing, memorizing and further mathematical processing is made for aims speed information getting. While aims speed information getting digitized information is sending to control and indication printed circuit board PCB. After each calculations cycle microwave generator is turning off and it really facilitating calculator thermal mode, reducing its consuming power and sharply increasing its repression protection. Moreover information distribution and memory cells storage, speed maximum installation as well as this maximum excess time finding and indication are made by control and indication PCB. And the last things made by this PCB are the following: LED-indicator brightness regulation and source of power condition control. As for source PCB it has microwave generator source modulator and stabilizer and sound signals supply micro-siren. Moreover this PCB executes some control parts intermediate commutations functions and external connections outputs indication. Measurement system vehicle electrical system or portable accumulator connection is made with help of external output. Source circuit has polarity reversal protection diode and switch. Accumulator jack with clamp. For noise creation setting we will use a device further it will called as suppressor with the same technical and physical characteristics as measurement system described above has with the following principled differences:. Said above requires from radar-detector not only detected signal wave band finding but finding its frequency with accuracy to Hz because the most accurate detected signal frequency value makes suppressor setting noise the most effective — for such purpose this radar-detector has a special detected signal frequency finding mode in GHz with accuracy to thousands after the point and its further showing. Moreover Escort Passport ix has a round radiation pattern and a special mode of detected signals number showing including their direction and intensity and both of these things give an opportunity to set the noise in the most intensive detected signal direction. So Pem value can be written in the following way:. Рязанский государственный медицинский университет. Томский государственный университет систем управления и радиоэлектроники. Естественные и математические науки. Подготовлен к печати сборник по итогам международной научно-практической конференции г. Подпишитесь на нашу рассылку. Главная Инновационные технологии в области технических наук, Уральский федеральный университет имени первого Президента России Б. Working transmission frequency is Working distance is no less than m; 3. Speed finding time by impulse principle is 0. Working principle \\\\\\\\\\\\\\\[1\\\\\\\\\\\\\\\] Measurement system working principle is based on Doppler effect when radio-detector signal frequency is changed after moving aim reflection. Measurement system construction \\\\\\\\\\\\\\\[1\\\\\\\\\\\\\\\] 1. Radar-detector Escort Passport ix For noise creation setting we will use a device further it will called as suppressor with the same technical and physical characteristics as measurement system described above has with the following principled differences: So Pem value can be written in the following way: Все права защищены Использование материала сайта разрешено только при наличии активной ссылки на источник. Подробнее Подпишитесь на нашу рассылку Будьте в курсе всех наших новостей и мероприятий.

Vehicle speed measurement Рекламный

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