发明名称 |
Data communication in a multi-wire irrigation control system |
摘要 |
An irrigation control device having a modulator that modulates data onto an alternating power signal by distorting amplitude of a first leading portion of selected cycles of the alternating power signal, and permit effectively a full amplitude of the alternating power signal on a following portion of the selected cycles, wherein the first leading portion and the following portion are either both on a high side of a cycle or both on a low side of a cycle of the alternating power signal. The irrigation control device further includes an interface configured to couple the modulator to a multi-wire interface coupled to a plurality of irrigation devices to permit the alternating power signal to be applied to the multi-wire interface. |
申请公布号 |
US8260465(B2) |
申请公布日期 |
2012.09.04 |
申请号 |
US20090505401 |
申请日期 |
2009.07.17 |
申请人 |
CRIST TIMOTHY J.;RAIN BIRD CORPORATION |
发明人 |
CRIST TIMOTHY J. |
分类号 |
G05D7/00;G05D11/00;H03C5/00;H03K7/02;H03K9/02;H04L27/02 |
主分类号 |
G05D7/00 |
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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