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US 8,264,396 B2Granted
Three dimensional noncontact motion sensor
AssigneeHoneywell International Inc.
InventorsAndy Peczalski, Steve D. Huseth, George Daniel Hadden
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Abstract
A non-contact motion sensor comprising a radar detector that includes a first antenna, a second antenna that is orthogonal to the first antenna and a third antenna that is orthogonal to the first antenna and the second antenna. The non-contact motion sensor further includes a control that collects and analyzes signals that are received from the radar detector.
Claims18
A non-contact motion sensor comprising:
- a radar detector that includes a first antenna, a second antenna that is orthogonal to the first antenna and a third antenna that is orthogonal to the first antenna and the second antenna;
- and
- a control that collects and analyzes signals that are received from the radar detector, wherein the control alternately activates the first antenna, the second antenna and the third antenna such that only one of first antenna, the second antenna and the third antenna is operating at a time.
A method of detecting motion in a component, the method comprising:
- transmitting radio frequency signals using a first antenna,
- transmitting radio frequency signals using a second antenna;
- transmitting radio frequency signals using a third antenna;
- receiving reflected radio frequency signals from the component with a first antenna;
- receiving reflected radio frequency signals from the component with a second antenna that is orthogonal to the first antenna;
- receiving reflected radio frequency signals from the component with a third antenna that is orthogonal to the second antenna and the first antenna;
- generating intermediate frequency signals based on differences between the transmitted radio frequency signals and the reflected radio frequency signals;
- measuring the intermediate frequency signal;
- and
- wherein transmitting the radio frequency signal using the first antenna, transmitting the radio frequency signal using the second antenna and transmitting the radio frequency signal using the third antenna are done at different times.
7 more elements
Dependencies are inferred from the claim text.