Research On Physical And Chemical Analysis Control System And Software Based On Microcontroller

Blood is the body’s transmission medium.It transports oxygen,sugar,hormones,fats,vitamins,and other organs to the body.At the same time,it also transports waste such as urea produced by tissue metabolism to the excretory organs.Its transportation path covers the whole body and participates in almost all tissues Function,so blood test is the first reference index of human physiological changes.From a microscopic point of view,there are already 1,000 kinds of biomarkers known in the blood.By testing the blood for biochemical indicators,it can help doctors quickly understand the abnormal changes in the human liver function,kidney function and blood lipids.From a macro perspective,the fluidity of blood in blood vessels,the deformability of cells,and the mechanical action of blood on blood vessels reflect physical abnormalities from physical properties.Studies have shown that when tissues and organs are diseased,the biochemical and hemorheological indicators in the body will change and are correlated.Therefore,simultaneous detection of biochemical indicators and hemorheological tests on blood can provide a basis for disease diagnosis from different dimensions.In order to improve the diagnosis rate of diseases.At present,the in vitro diagnostic instruments for biochemical testing and hemorheological testing are independent individuals,and cannot perform the detection of two types of indicators at the same time,so this article aims to design a physical and chemical analysis that can perform the detection of biochemical indicators and hemorheological indicators Control system to achieve the purpose of improving the diagnosis rate of disease,reducing the workload of medical staff,and reducing the waiting time of patients.This paper takes biochemical detection and hemorheology detection as the main body,and designs the corresponding sampling module,detection module temperature control module and host computer software.Due to the difference in samples required for different detection types,the sample separation module proposes a blood separation and re-fusion technology that uses STC89C52 as a sub-controller to control the stepper motor,peristaltic pump and solenoid valve to achieve precise positioning of the probe.The purpose of accurate sample drawing.The detection module designed the biochemical detection body based on the spectrophotometric method and the blood rheology detection body based on the pressure sensing method,and designed the corresponding signal detection circuit and signal conversion circuit with the STM32F103ZET6 as the main controller.In order to prevent the influence of temperature fluctuations on the detection results,the temperature control module uses STM32 as the controller to design a temperature control system based on fuzzy PID algorithm to ensure that the temperature of the detection body is at 37℃.The host computer software is based on the Visual studio 2010 development environment,and the C# language is used as the programming language to design the host computer software from four modules: communication,detection,query,and printing.Use Microsoft Acess to build a database to store patient information,index parameters and mechanical operating parameters,use ADO access technology to complete the connection between the host computer program and the database,so that the program can add,delete,modify and check the programs in the database.Finally,each module of the upper and lower computer is individually tested and coordinated to verify the stability and reliability of the entire system.The sample test results also show that the detection performance and index results of the system meet the design requirements.