Invention Grant
- Patent Title: Data communication in a multi-wire irrigation control system
- Patent Title (中): 多线灌溉控制系统中的数据通信
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Application No.: US13570139Application Date: 2012-08-08
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Publication No.: US08532831B2Publication Date: 2013-09-10
- Inventor: Timothy J. Crist
- Applicant: Timothy J. Crist
- Applicant Address: US CA Azusa
- Assignee: Rain Bird Corporation
- Current Assignee: Rain Bird Corporation
- Current Assignee Address: US CA Azusa
- Agency: Fitch, Even, Tabin and Flannery, LLP
- Main IPC: G05D7/00
- IPC: G05D7/00 ; A01G25/00 ; H04B3/00 ; H04L25/00 ; H04L7/00 ; H03C5/00 ; H03K7/02 ; H03K9/02

Abstract:
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.
Public/Granted literature
- US20120303169A1 DATA COMMUNICATION IN A MULTI-WIRE IRRIGATION CONTROL SYSTEM Public/Granted day:2012-11-29
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