[특허]Modulated pulse doppler sensor

[미국특허] Modulated pulse doppler sensor 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G01S-013/04 G01S-013/56
출원번호	US-0794268 (2001-02-27)
발명자 / 주소	Thomas E. McEwan
출원인 / 주소	McEwan Technologies, LLC
대리인 / 주소	Mark A. Haynes
인용정보	피인용 횟수 : 35 인용 특허 : 16

초록 ▼

A range gated microwave motion sensor having adjustable minimum and maximum detection ranges with little response to close-in false alarm nuisances such as insects or vibrating panels. The sensor resolves direction of motion and can respond to target displacement in a selected direction and through a selected distance, in contrast to conventional hair-trigger motion sensors. A constant false alarm rate (CFAR) detector prevents false triggers from fluttering leaves, vibrating machinery, and RF interference. The sensor transmits an RF pulse and, after a modulated delay, mixes echo pulses with a mixer pulse. Thus, the echo pulses are modulated at the mixer output while transmit and mixer pulse artifacts remain unmodulated and easily filtered from the output. Accordingly, the sensor only responds to echoes that fall within its minimum and maximum range-gated region, and not to close-in or far-out objects. Applications for the low-cost system include indoor and outdoor burglar alarms, automotive security alarms, home and industrial automation, robotics, vehicle proximity sensors, cardiac motion detection, and a universal radar "bubble" detector.

대표청구항 ▼

1. A radar Doppler transceiver apparatus comprising:a PRF generator for producing a sequence of clock cycles; a modulated delay element connected to the PRF generator for producing a modulated delay; a transmit pulse generator connected to the modulated delay element for generating a transmit pulse having a modulated delay; an adjustable delay element connected to the PRF generator for producing an adjustable fixed delay; a mixer pulse generator connected to the adjustable delay element for generating a mixer pulse, the mixer pulse having an adjustable plus modulated delay relative to the transmit pulse; a summation circuit connected to the transmit and mixer pulse generators; an RF oscillator connected to the summation circuit for producing a pair of RF bursts from each clock cycle, a transmit burst and a mixer burst, the mixer burst being delayed from the transmit burst by an adjustable plus modulated delay; an antenna connected to the RF oscillator for transmitting the transmit burst towards a target; a mixer connected to the antenna for mixing reflected bursts produced by the transmit burst with the mixer burst to produce a modulated mixer signal; an IF filter/amplifier for rejecting unmodulated mixer outputs and amplifying modulated mixer outputs; an envelope detector for demodulating the modulated and amplified mixer outputs and producing a Doppler signal; a baseband filter/amplifier for conditioning the Doppler signal and providing a range gated Doppler signal output.

이 특허에 인용된 특허 (16) 인용/피인용 타임라인 분석

Angwin James H. (Merrimack NH) Flannery John B. (Chelmsford MA), Anti-collision vehicular radar system.
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Burns, Bryan L.; Callahan, Michael W., Bistatic pulse-overlap Doppler radar intrusion detection apparatus.
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Sirven Jacques (Paris FRX) Marchais Jean-Claude (Paris FRX), Circuit arrangement for eliminating fixed echoes in a pulse.
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Marchais Jean Claude (Paris FRX), Device for eliminating fixed echoes in a radar.
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Poullain Michel (Meudon FRX) Marcuard Alain (Bievres FRX), Device for eliminating low frequency noise from a transmission system, in particular 1/f noise in a homodyne radar recei.
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McEwan Thomas E., Differential pulse radar motion sensor.
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McEwan Thomas E. (Livermore CA), Homodyne impulse radar hidden object locator.
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Cheal James (Tempe AZ) Fitzsimmons James R. (Tempe AZ) Foley Edward J. (Tempe AZ), Intrusion detection radar system with amplitude and frequency carrier modulation to eliminate targets at short and long.
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McEwan Thomas E. (Livermore CA), Pulse homodyne field disturbance sensor.
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Ishikawa Sachiko (Kanagawa) Fujisaka Takahiko (Kanagawa) Oh-hashi Yoshimasa (Kanagawa JPX), Pulsed Doppler radar system.
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Seed Willian R. (115 Priam Way Nepean ; Ontario CAX K2H 8S7), Radar intrusion detection system.
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McEwan Thomas E. (Livermore CA), Range-gated field disturbance sensor with range-sensitivity compensation.
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Rittenbach Otto E. (Neptune NJ), Range-gated pulse doppler radar system.
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Sejourne Paul J. (Paris FRX) Mizzi Felix (La Courneuve FRX), Systems for receiving messages transmitted by pulse position modulation (PPM).
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Fullerton Larry W. (Huntsville AL), Time domain radio transmission system.
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McEwan Thomas E. (Livermore CA), Ultra-wideband radar motion sensor.
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이 특허를 인용한 특허 (35) 인용/피인용 타임라인 분석

Drake, George Michael; Crist, Ryan; Fleig, Tyler; Dallas, Milton; Kroeger, Scott; Siegel, Norm; Ketelhohn, Charlie, Adjusting the sensitivity of a PIR sensor or a doppler radar sensor disposed within a light fixture.
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Heneghan, Conor; Zaffaroni, Alberto; De Chazal, Philip; Shouldice, Redmond, Apparatus, system and method for chronic disease monitoring.
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Toennesen,Tore; Reiche,Martin, Device and method for registering, detecting, and/or analyzing at least one object.
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Subramanya, Balu, Directional speed and distance sensor.
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Subramanya, Balu, Directional speed and distance sensor.
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Subramanya, Balu, Directional speed and distance sensor.
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Subramanya, Balu, Directional speed and distance sensor.
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Kroeger, Scott; Drake, George Michael; Crist, Ryan; Fleig, Tyler; Dallas, Milton; Siegel, Norm; Ketelhohn, Charlie, Doppler radar motion detector for an outdoor light fixture.
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Loftus, Robert Francis Joseph, Electromagnetic field pickup for musical instruments.
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Lee, Yen-Hsien; Tseng, Wen-Jen; Lin, Hong-Dun, Electronic device and method for sensing active state of object.
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Otts, Daniel W., Filtering sensor data to provide estimates of structures.
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Rekow,Andrew Karl Wilhelm; Stephens,Scott Adam, Method and system for determining relative position of mobile vehicles.
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Antonsson, Anders, Method and system for presence detection.
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Babakhani, Aydin; Jamali, Babak, Methods and related systems of ultra-short pulse detection.
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Kavaler, Robert, Micro-radar, micro-radar sensor nodes, networks and systems.
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Wu, Xiaodong; Holvick, Harold L.; Green, Leslie K.; Helland, James N., Microwave smart motion sensor for security applications.
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Tirkel,Anatol Zygmunt; Gadek,Jerzy Fryderyk, Near-field antenna array with signal processing.
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Nakamura,Akihiko; Nishidai,Tetsuo; Sato,Yasuhiro; Nishiguchi,Tadao; Ishihara,Naoyuki, Object sensor and controller.
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Jonathan Geisheimer ; Gene Greneker ; Scott Billington, Phase-based sensing system.
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Aoyagi, Yasushi, Pulse doppler radar device.
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Ishii,Satoshi; Dooi,Yoshikazu; Yatsuka,Hiroyuki; Seki,Tetsuo; Hamada,Kazuaki, Pulse radar apparatus.
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Okamura, Shigekazu, Pulse radar device.
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Iida, Izumi, Pulse receiving circuit, pulse receiving method and pulse wireless communication device.
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Yanagisawa, Wasuke; Horie, Ryo; Ge, JunXiang, Radar system.
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Dvorkin, Vladimir, Radar system and method for providing information on movements of object's surface.
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McMahon, Stephen; Wren, Michael; Wood, Spencer Terry; Conway, Kieran; Heneghan, Conor, Range gated radio frequency physiology sensor.
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McMahon, Stephen; Wren, Michael; Wood, Spencer Terry; Conway, Kieran; Heneghan, Conor, Range gated radio frequency physiology sensor.
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Lee, Yen-Hsien; Lin, Hong-Dun; Tseng, Wen-Jen, Sensing system and method for physiology measurements.
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Adlerstein, Michael G., Sub-millimeter wave imaging system.
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Kumar, Ravi; Agarwal, Priyanka; Kumar, V. Pravin, System and method for providing a low power low voltage data detection circuit for RF AM signals in EPC0 compliant RFID tags.
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Alalusi, Sayf, System and method for sensing distance and/or movement.
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Zemany, Paul D.; Sutphin, Eldon M., Through the wall ranging with triangulation using multiple spaced apart radars.
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Zemany,Paul D.; Sutphin,Eldon M., Through the wall ranging with triangulation using multiple spaced apart radars.
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Carbonari,David, Ultra wideband transmitter.
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Fedotov,Dmitry; Sudakov,Alexander, Ultra-wideband transceiver.
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A	생활필수품
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[미국특허] Modulated pulse doppler sensor 원문보기