Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Broad field motion detector










Image Number 8 for United States Patent #7277012.

A motion sensing system device and method which utilize dispersed ultrasonic radiation is disclosed. The system preferably comprises a low profile sensor unit configured to couple to a ceiling position. The sensor unit comprises an ultrasonic transmitter and an ultrasonic receiver and a pair of acoustic reflectors positioned in a transmitting path of the ultrasonic transmitter and a receiving path of the ultrasonic receiver for generating and detecting the ultrasonic radiation in a broadcast field. The acoustic reflectors preferably comprise cones, conical cross-sections and/or combinations thereof which are integral with the ultrasonic transmitter and the ultrasonic receiver and/or are coupled to a housing structure for positioning the acoustic reflectors in the transmitting and/or receiving paths. The sensor unit also preferably comprises a circuit for driving the transmitter and for detecting motion by detecting changes in the receiver signal. In further embodiments, the system also includes an infrared sensor and is configured to generate a response based on the combination of changes in the receiver signal and a signal form the infrared sensor.








 
 
  Recently Added Patents
Inductive signal transfer system for computing devices
System for collecting computer application usage data of targeted application programs executed on a plurality of client devices
Method for producing cathode active material for a lithium secondary battery
Method of sending CTI messages in a communication system
Workflow-enabled client
Electronic component, a semiconductor wafer and a method for producing an electronic component
Communication terminal device, communication system, and communication control method
  Randomly Featured Patents
Speed control for an electric linear actuator such as a trailer jack and the like
Shift yoke
Rotary timer
Liquid crystal display and method for manufacturing the same
Tunnel injection controlling type semiconductor device controlled by static induction effect
Turning bar for moving web
Spring contact for conducting electricity
System and method for transmitting data
Apparel with reduced drag coefficient
Immunoconjugates of anti-IL-20 antibodies and hybridoma cell lines expressing anti-IL-20 antibodies