发布时间 : 星期五 文章基于单片机的液体点滴控制系统设计说明书论文更新完毕开始阅读
南京工程学院毕业设计说明书（论文）
SCM are exploring completely which make function of the system stronger Key words: SCM; the Infrared Transmission.义淨擁扪殴胁纸窺钣鳧。 I. Introduction
In medical, it requests the speed of a bit of transfusion to control in certain scope. Traditional transfusion installation in transfusion course, accompanying the liquid unceasing decreasing in transfusion bottle and the transfusion’s speed of a bit unceasing reduction, cannot satisfy medical requirement. This design uses the infrared check installation testing speed of a bit, transformation it to digital signal and inputs SCM. SCM shows it using numberal pipe and at the same time SCM controls walking electrical machine according to design, to make the speed control of a bit in the scope that enactments in advance. To increase systematic practicality, from digital keyboard of SCM, user can communicate according to the network and enactment the drop speed of set point by one’s need, can realize transfusion a bit of several wards from control system. It can replace transfusion with existing hospital by the liquid speed supervisory and control arrangement of a bit which have the characteristic with simple control and high precision. There is wide market prospect in the aspect of hospital and family tend, having higher society and economic benefits. It just follows as fig 1:
绥骅懸缙澀鷂禍紳撻粮。 48
南京工程学院毕业设计说明书（论文）
II. Hardware design
A. SCM brief introduction: SCM is more called as tiny controller definitely, is 20 century middle of 70 decade development getting up a kind of rule modular of integrated circuit that faces control , its characteristic is function strong , volume little ,reliability is high , price cheap. Once it came forth,it was convenient in industrial control, data collection and intelligence melt the fields such as
appearance,electromechanical unifinication and home appliances and have gotten extensive application, also have raised automation level and the technical level of these fields maximally. Therefore application and the development of SCM have become high-tech with asignificant program of project field.馒锁開钥焖緒珏編軻錙。 B. Walk into generator: It is a kind of conductedelement of digital control system. It can change the digital quantitative change of input, is correspondingangular displacement or the displacement of straight line, make digital signals into pulse signals, give firstly pulse signals, motor turns a angle or ongoingone step. Sketch is Fig.2:獄质嶇僅痺鲒潰脫帧開。 ① THE speed inspection of a bit design: It adopts the infrared sensor
49
南京工程学院毕业设计说明书（论文）
drop speed of measurement point, project with direct current, circuit is simple , has steady performance. Consideration uses a pair of pipe,
鍥苋娛殫秽笾殇蕢谬藓。 lean droplet to fall take off reflection infrared ray will make accept pipe unknown and produce low level signals, but reflection signals is too weak , can not be monitored efficiently.杂砖墳雖紜飯曇覡墾騾。 ② The speed control: It is fast to set an initial altitude first, and detection drips now. Then, regulate repeatedly, controlling step into the revolution of generator according to the relation between high and drop speed reaching suitable, make droplet satisfy to set drop speed highly.轼栀嗶鑊绷瘍懔諍訝澤。 ③The high detection of face of blade with alarm: Using infrared detection Technology, realize its warning function. Let infrared transmitting tube with take over pipe just for set up in bottle two side, and set up in the altitude of cordon, because of sensor when having water with sink water receive signals strength difference. Therefore but basis take over the strong weak difference of signals, with comparator handling,can get the greater telecommunications discrepancy that water level arouses in critical line , and judging from whether water level reaches cordon, SCM sends alarm signal’s.尋头厭呛羈阴帥讕匦赞。 50
南京工程学院毕业设计说明书（论文）
III. Software design
Software design is systematic crucial link. If hardware is \software is “muscle and nerve\Software design is mainly with signals and control signal `s outputting, the communication between main station and stations and showing with keyboard’s controlling program. 訪齙剛玺苏滥夹趕萤凭。 (1) Keyboard with showing is complete modular and the frequency that shows are the things that we will consider, because of having measured the speed of a bit, the frequency that shows can set according to needs completely.写韞僂谌虛鍤囈辮褻糝。 (2) The software about the communication between main station and stations: With relapse test and elaborate design, with the isolation technology of chief line us have realized standing for war all functions, can realize efficiently to stand for the control of station. Major stands to dispatch information are contained from station number and
51