low-level bus 中文意思是什麼
low-level bus
解釋
低底盤公共汽車-
This dissertation describes the studying of the whole construction of water - saving irrigation expert control system, the realization of hardware and software and low - cost soil - moisture sensor which is needed for water - saving irrigation. the distributed control system based on bus. according to real - time data of soil - moisture, water - level of sump, pressure of tube, etc. and irrigation knowledge in expert knowledge bases, it can make decisions such as when to irrigation, the water quantity to irrigation and the cost and benefit of the irrigation
本文對節水灌溉專家控制系統的總體結構、軟硬體實現以及節水灌溉急需的低成本土壤水分傳感器進行了研究，系統採用了基於總線的分散式控制結構，根據實時檢測的土壤水分、水槽水位、管道壓力等實時參數，知識庫的作物灌溉知識，分析決策灌水時間、灌水量、灌溉成本及灌溉效益。 -
The study bases on the four operating conditions of which the longnan network will be implemented in the year of 2005 and 2010. first, this paper calculates the power flow distribution that including the line charging reactive power and input of the low - voltage shunt reactor in chengxian s / s. assumed that the bus voltage of tianshui s / s and bikou power plant to be constant, the study count the voltage level of the 330kv and 220kv bus - bar when the 330 / 220kv transformer in standard tap changer position. in order to set control rules
本文基於隴南電網在規劃發展水平年2005年及2010年的四種可能的運行方式下及潮流條件，計算出了計入線路充電無功及投入成縣變低壓並聯電抗器后的潮流分佈，在設定甘肅大網側及碧口電廠側母線電壓恆定條件下，計算了330kv及220kv主變在有載調壓標準分接頭變比下的330kv及220kv母線電壓水平。 -
In this paper, to realize a low - level network of a control system, we study the technology of fieldbus control system and analyze the architecture and the communication model of pcs. and then, a widely used fieldbus - control area network ( can ) is discussed in the paper. after the discussion from theory layer, we introduce the design and implementation of a can bus based control system
本文圍繞一個生產現場的底層控制應用系統的設計開發，展開了對控制系統底層網路?現場總線技術的研究，著重研究了其網路體系結構及通信模型等方面，而後對一個在實際應用中較有影響的現場總線? can現場總線做了詳細介紹，在基於理論層論述后，結合研究內容詳細介紹該應用系統的具體的設計與實現，最後對控制網路的發展趨勢進行了總結。
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