Method and system for enlarging ultrasound signal and infrared signal receiving angle and distance

An ultrasonic signal and ultrasonic technology, applied in the re-radiation of sound waves, radio wave measurement systems, and re-radiation of electromagnetic waves, etc., can solve the problems of weak anti-interference ultrasonic ability and narrow ultrasonic/infrared signal receiving range.
CN101339248AInactive Publication Date: 2009-01-07常州迪锐特电子科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
常州迪锐特电子科技有限公司
Publication Date
2009-01-07
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a method and a system for expanding a receiving angle and distance of an ultrasonic signal and an infrared signal, and is characterized in that a novel ultrasonic omnidirectional receiver, an interference ultrasonic absorption device / structure and a device which expands the receiving range of the infrared signal by an infrared lens are designed into an ultrasonic and infrared distance measurement or positioning system; and the structural combination of the devices can also be carried out so as to obtain the omnidirectional ultrasonic receiver with large receiving range and effective anti-interference.
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Description

technical field

[0001] The present invention relates to ultrasonic and infrared ranging or positioning devices, in particular to an acoustic design method and device for improving the angle and distance of ultrasonic signal reception on ultrasonic ranging or positioning devices, and expanding the receiving of infrared signals by using infrared lenses Methods and apparatus for angles and distances. Background technique

[0002] Ultrasonic ranging and positioning devices have been widely used, such as in robot vision, especially in electronic whiteboard systems (including copy electronic whiteboards and interactive electronic whiteboards) in recent years. figure 1 shown.

[0003] An ultrasonic ranging or positioning system roughly includes two parts: the transmitting part and the receiving part. Ultrasonic ranging / positioning has two modes:

[0004] One is an integrated transceiver, such as a reversing radar, which means that the ultrasonic transmitting part and receiving p...

Claims

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