发明名称 |
Wireless sensor reader |
摘要 |
A wireless sensor reader is provided to interface with a wireless sensor. The wireless sensor reader transmits an excitation pulse to cause the wireless sensor to generate a ring signal. The wireless sensor reader receives and amplifies the ring signal and sends the signal to a phase-locked loop. A voltage-controlled oscillator in the phase-locked loop locks onto the ring signal frequency and generates a count signal at a frequency related to the ring signal frequency. The voltage-controlled oscillator is placed into a hold mode where the control voltage is maintained constant to allow the count signal frequency to be determined. The reader uses an ambient reading or other information to select a subset of the possible ring signal frequencies, and tunes or adjusts its circuits and algorithms to focus on that subset. |
申请公布号 |
AU2012249815(B2) |
申请公布日期 |
2016.09.29 |
申请号 |
AU20120249815 |
申请日期 |
2012.04.25 |
申请人 |
Endotronix, Inc. |
发明人 |
Nagy, Michael;Rowland, Harry;Watkins, Roger;Sundaram, Balamurugan |
分类号 |
G08C19/12;G08C19/14;G08C19/16;H04Q5/22 |
主分类号 |
G08C19/12 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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