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Data communication in a multi-wire irrigation control system
专利权人:
Timothy J. Crist
发明人:
Timothy J. Crist
申请号:
US13570139
公开号:
US08532831B2
申请日:
2012.08.08
申请国别(地区):
US
年份:
2013
代理人:
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.
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