In the complete project , the author highlights the designs of the voice terminal module in voip and gateway module in h . 323 respectively 在整體解決方案中,重點(diǎn)介紹了voip語音終端模塊設(shè)計(jì)和h . 323網(wǎng)關(guān)模塊設(shè)計(jì)。
Then it explains how to develop the general data acquisition terminal with pic16c57 by referring to the principle , interface , and data communications protocol of environmental multiple - parameter sensors ysi and satellite terminal modules 然后,本文在分析環(huán)境多參數(shù)傳感器ysi和北斗衛(wèi)星終端的工作原理、接口特點(diǎn)和通信協(xié)議的基礎(chǔ)上,用pic系列單片機(jī)pic16c57研制了通用數(shù)據(jù)采集終端。
The main function characteristics of the new control system and some special function modules were also introduced , including master control module , communication protocol conversion module , data analysis and information display module , function expansion module , and user work platform terminal module 介紹了系統(tǒng)中所使用的交通流預(yù)測模型及其核心實(shí)現(xiàn)模塊,包括主控制模塊、通信協(xié)議轉(zhuǎn)換模塊、數(shù)據(jù)分析及顯示模塊、功能擴(kuò)展模塊和系統(tǒng)中心軟件模塊。
The system selects micro control unit and programmable logic device as the core of controller , gsm terminal module as communication device , gps as position equipment , a / d sampling for voltage and current checking , solar battery as power supply , switch dc - dc as power voltage conversion , and so on 以微處理單元與可編程邏輯器件為核心搭建系統(tǒng)控制器,選擇gsm無線通信模塊實(shí)現(xiàn)系統(tǒng)通信,全球定位系統(tǒng)實(shí)現(xiàn)水標(biāo)燈定位, a d采樣與轉(zhuǎn)換實(shí)現(xiàn)電壓電流檢測,太陽能電池為系統(tǒng)供電,開關(guān)型dc - dc實(shí)現(xiàn)電源電壓轉(zhuǎn)換。