发明名称 Wireless position sensing in three dimensions using ultrasound
摘要 A position sensing system 2 dynamically reduces the effects of multipath reflections by dynamically adjusting the comparator 16 threshold in response to received signals 4. The system compares the time a signal takes to travel from a transmitter 8 in a mobile component 6 to a plurality of receivers 12 in a fixed component 10 and adjusts (increases) the comparator threshold if the difference in times measured by the receivers is too large. It may also reduce the threshold if any receiver does not detect a signal.
申请公布号 GB201206458(D0) 申请公布日期 2012.05.30
申请号 GB20120006458 申请日期 2008.06.16
申请人 PERFORMANCE DESIGNED PRODUCTS LIMITED 发明人
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