| Semiautomatic bio-chemical analyzing instrument is one of the most necessary instructments which are used in clinics'diagnosing for doctors. It can measure concentration of blood sugar and other bio-chemical targets.Semiautomatic bio-chemical analyzing instrument is a appropriative spectrocolorimeter. Its theoretical base is absorption law in spectroanalysis. Absorbency analyzing theory is also called Ultraviolet-visible Spectrophotometry, UV-Vis which is based on speciality and extent of absorbency for substance molecule, a method to quantitative analysis. Using semiautomatic bio-chemical analyzing instrument to measure bio-chemical targets is one of applications for absorbency analyzing theory, according as color reaction in chemistry. We can use different bio-chemical reagent to measure concentration of bio-chemical targets through its color reaction and absorption law.Going with development of iatrology, requirements for our country become more and more imminency. Semiautomatic bio-chemical analyzing instrument can not satisfy increasing of diagnosis, mersure worklord, times for doctors'go out and accident of locale measuring. To solve these problems, researching of Portable semiautomatic bio-chemical analyzing instrument has a lot of economic benefit and social benefit.The portable semiautomatic bio-chemical analyzing instrument we researched not only has many excellences such as delicacy, veracity, speediness, and standardization, but also has many function characters such as having small cubage, saving electronic, printing results immediacy, applying end point method and kinetic method, and having vehicular power supply. It can use for doctor to go patients'rounds, for army, school to check people's condition, for people to check health at home or diagnose on line.It has 5 main functions:1) Item programming function Consumers can input bio-chemical targets'name, choose and confirm measure method, wavelength, volume, measure time and other factors.2) Correct light way automatically Portable semiautomatic bio-chemical analyzing instrument should applyexcellent light way to bio-chemical measures. It should choose sutible fiter automatically to produce needed light to ensure veracity of measures.3) Semiautomatic measure functionSystem can reduce measure's steps, measure bio-chemical targets'concentration semiautomaticly and correct result once customer chose bio-chemical targets.4) Input and display functionsPortable semiautomatic bio-chemical analyzing instrument apply LCD to show factors, results and other datas that using in measure for customers. Keyboard can be used to input datas or commands.5) Portable functionSystem's power is supplied by vehicular power, so it can be taken witn doctor, and be used in open country, patients'home and so on.Single chip is core of portable semiautomatic bio-chemical analyzing instrument, single chip is also called subminiature controller.It is computer system integration. Also uses a kind of kernel to be its core.Single chip inclues ROM/EPROM, RAM, bus snopping, timers, watchdog, I/O, serial device, A/D, D/A, FLASH and other necessary components and devides. We choose MCS-51 which was produced by INTEL as the system's core.System's hardware was constituted by light way system, photometric electronics system, time system, input and display system, print system, vehicular power system.Light way system can choose homochromous light whose wavelength can be chose, and make it stabilization. Light way system is an essential hardware of portable semiautomatic bio-chemical analyzing instrument. The light way system we discussed is constitute by light, colorimetry cup, filter's elctronic circut, pump's electronic circuit.Photometric electronics system is constitute by prepositive amplifier, variational plus amplifier, A/D7135, this system is used to make light single to electronic single, electronic single amplifies, A/D transition. It supplies datas for single chip to calculate.Time system gives portable semiautomatic bio-chemical analyzing instrument a exact time orientation.Input and display system gives consumer a favourable condition for consumer to control portable semiautomatic bio-chemical analyzing instrument. Print system can print then finally result for doctor to analyzing.Vehicular power system can make whole system to portable.The whole software system is progamed with C language. It includes two aspects, one is bio-chemical analyzing method programme, the other is operating system item programme.Bio-chemical analyzing method programme is programming end point method and kinetic method. Consumer can choose sutible method to measure.Operating system item programme.include initialization programming and item programming.To validate the dependability and stability of the whole system, using portable semiautomatic bio-chemical analyzing instrument to measure the content of ALP in blood serum, the result is good, the whole system is succeed.Portable semiautomatic bio-chemical analyzing instrument has hugepotential in iatrology field, we shoule developed it and make more advantage. |
PDF Full Text Request