| Cytology is the most widely used clinical validation of one of the inspection.Blood analyzer is used to measure blood volume in units of red blood cells, whiteblood cells, platelets and hemoglobin parameters as a instruments, these parametersplays an important role in clinical and pathological analysis and on clinicaldiagnosis.Application has been more common in small or medium hospitals.However, the blood analyzer for domestic use are the introduction of foreignequipment is very expensive. Therefore, blood analysis of complete, analysis ofaccurate, prices for domestic small and medium sized hospital blood analyzerimminent.This paper first describes the profile and classification of blood analyzer,introduced the electric impedance analyzer blood cell count and volume measurementand colorimetric determination of hemoglobin concentration principle, combined withdomestic and international full-blood analyzer This paper describes the developmentof the content, meaning, describes the principles of blood analyzers, composition andworking process, with emphasis on the blood analyzer control system design..Design measurement and control system of blood analyzer, including hardwaredesign and software design in two parts. Measurement system from the hardwarepoint of view is very heterogeneous, input and output volume, stringent timingrequirements of operations. There are pre-processing of blood cells and design ofdetection circuit; liquid road system of blood analyzer and design of work flow; thecontrol circuit design of liquid Road part, mainly motor, solenoid valve control circuit;select uPSD3334single chip for CPU, and designed software flow chart. Through thedebugging and the performance examination to the electronic control system softwareand hardware, it isproved that the performance characteristics of this control systemwere accorded with thedesign requirement of automatic biochemical analyzercompletely. Finally, proposed someimproved measures aimed at the insuffciency inthe design. |
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