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US 7,483,338 B2Granted
Ultrasonic locator system and method
AssigneeGencsus
InventorsGuy Drouin, Jean-Marc Piuze, Frederic Landry
Life of this patent
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Abstract
An ultrasonic transmitter system(s) and method(s) are described having location and tracking capabilities. The transmitter's, by using ultra sound and encoded micro-modulation, are able to provide enhanced longevity and reliability. A maze algorithm is devised that further provides discrimination of false detections, versus true detections, and no detection.
Claims15
An ultrasonic transmitter capable of functioning as an electronic badge, the ultrasonic transmitter comprising:
- a frequency oscillator operating at an ultrasonic frequency;
- a microcontroller assembly having an encoder capable of encoding a predetermined value, a serializer capable of serializing the encoded value, a parity encoder between the encoder and the serializer, and a micro-modulator capable of micro-modulating the serialized encoded value using the ultrasonic frequency;
- and
- an ultrasonic transducer capable of transmitting the encoded value as a micro-modulated ultrasonic signal.
1 more element
An ultrasonic locator system, comprising:
- a fixed location ultrasonic receiver;
- a hub controller capable of receiving signals demodulated by the fixed location ultrasonic receiver;
- a system controller coupled to the hub controller;
- and
- an ultrasonic transmitter capable of functioning as an electronic badge, the ultrasonic transmitter including:
- an ultrasonic frequency oscillator,
- a microcontroller assembly having an encoder capable of encoding a predetermined value,
- a serializer capable of serializing the encoded value,
- a parity encoder between the encoder and the serializer,
- a micro-modulator capable of micro-modulating an ultrasonic frequency of the oscillator with the serialized encoded value, and
- an ultrasonic transducer capable of transmitting a micro-modulated ultrasonic signal to the fixed location ultrasonic receiver.
8 more elements
Dependencies are inferred from the claim text.