power alarm device 中文意思是什麼
power alarm device
解釋
斷電警報裝置-
Low and medium voltage power distribution systems, lighting, ups, afd application, short circuit calculation and protective device coordination, fire alarm systems, telephone systems, hazardous material monitoring and alarm systems
中、低壓配電系統，照明， ups ，變頻器應用，短路計算，保護裝置協調，消防報警系統，電話系統，危險材料監控和報警系統。 -
According to the request of this subject, we have developed the system hardware and software for the slave device and the inspection software running on the pc. in this paper all of the followings is illustrated detailedly, such as the research on the principles of measurement and its realization, three means of water - level measurement that are separately based on photo electricity coder, pressure sensor and potentiometer ; selection of the microchip, we choose an advanced integrated soc ( system on chip ) microchip c8051f021 as the main controller ; realization of signal sampling, processing and its conversion in the mcu ; application of high precision 16 bits adc cmos chip - - ad7705 in our system, designing its interface with the microchip and relevant program ; using a trickle charge timekeeping chip ds1302 in the system which can provide time norm and designing of its i / o interface and program ; additionally, a 4 ~ 20ma current output channel to provide system check - up using ad421. in the system, ad421, ad7705 and the microchip compose spi bus ; to communicate with the master pc, here we use two ways which are separately rs232 and rs485 ; moreover, there are alarm unit, keyboard unit, power supply inspection unit and voltage norm providing unit in the system
針對研製任務的要求，課題期間研製了下位機系統硬體和軟體，開發了上位機監控軟體，其中所作的具體工作包括：測量原理的研究和在系統中的實現，在本次設計中用三種方法來進行水位測量，分別是旋轉編碼器法、液位壓力傳感器法和可變電阻器法；主控晶元的選擇，我們選用了高集成度的混合信號系統級晶元c8051f021 ；實現了信號的採集和處理，包括信號的轉換和在單片機內的運算；高集成度16位模數轉換晶元ad7705在系統中的應用，我們完成了它與單片機的介面設計及程序編制任務；精確時鐘晶元ds1302在系統中的應用，在此，我們實現了用單片機的i o口與ds1302的連接和在軟體中對時序的模擬，該晶元的應用給整臺儀器提供了時間基準，方便了儀器的使用；另外，針對研製任務的要求，還給系統加上了一路4 20ma模擬信號電流環的輸出電路來提供系統監測，該部分的實現是通過採用ad421晶元來完成的，本設計中完成了ad421與單片機的spi介面任務，協調了它與ad7705晶元和單片機共同構成的spi總線系統的關系，並完成了程序設計；與上位機的通信介面設計，該部分通過兩種方法實現： rs232通信方式和rs485通信方式；系統設計方面還包括報警電路設計、操作鍵盤設計、電源監控電路設計、電壓基準電路的設計。 -
In hardware system design, we adopted the microcontroller of at89c51 as the main controller of inferior processor, it is used to connect the modem with the data acquisition module. mcs - 51 assemble language is used to program the software of the device to realize the data transmission between modem and inferior processor. when the electric power in the run is beyond the specified value, the inferior processor can dial the phone number of central computer automatically to send the alarm message through the communication line. using a single - chip microcomputer to control a modem to transmit remote datas are introduced in detail
隨后詳細地介紹了系統的總體設計思想和具體的實現過程。在硬體系統設計中，採用了at89c51單片機作為下位機主控制器，用於連接modem和數據採集模塊。通過使用mcs51匯編語言編寫程序，實現了下位機與modem之間的數據傳輸，同時實現了自動檢測負荷，進行撥號報警的功能，其中重點介紹了單片機控制modem進行遠程數據傳輸的方法。 -
According to the principle of lower cost, higher reliability, the design completes much work. the contents of project are as follows : ( 1 ) pic micro - controller which is lower - power and lower price is the core of control device. the whole circuit realizes the functions of collecting pulse, keeping data, driving electric machinery valve, reading and writing ic, detecting power supply, sound alarm and liquid crystal display
設計依據低成本，高可靠性的原則完成了以下工作： （ 1 ）用功耗低、價格便宜的pic系列單片機作為控制裝置的核心，控制裝置的硬體電路實現了脈沖採集、數據存儲、電機閥驅動控制、 ic卡讀寫、電源檢測以及聲音報警和icd液晶顯示等功能。
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