Structural Optimal Design And Error Analysis Of Quick Biochemical Detector

In disaster rescue, getting the important biochemical parameters rapidly is the basic premise of saving lives. In recent years, in response to the demand of saving the wounded in sudden natural disasters or man-made disasters, new requirements and challenges for the laboratory medicine and equipment in field environment have been put forward. Traditional biochemical detector cannot be used in field environment because of its poor environment adaptability, poor portability and slow detecting speed. Therefore, in order to meet the need of clinical examination in disaster environment and promote our technology of first-aid biochemical detecting equipment, the research on practical biochemical detector with the characteristics of multiple parameters, low power consumption, speediness and portability has important social significance and application.According to the application demands of detecting important life parameters of the wounded and sick rapidly in disaster environment and in small and medium-sized medical institutions, this paper carries out the research on structural optimal design and error analysis of quick biochemical detector to detect seven important life parameters as K+, CO2, Na+, Cl-, Cre, GLu, Hb. A technical solution based on MOEMS micro spectrometer, ultraviolet LED and ultraviolet photosensitive diode has been put forward. The key techniques such as instrumental stability and reliability design, system integration based on micro assembly and error correction have been broken through. Structural optimal design of quick biochemical detector has been completed. The technical difficulties such as high-precision sample scanning and optimal distribution inside instrument have been solved. The practical prototype has been developed successfully and error analysis of prototype structure has been carried out. The performance parameters and clinical application of prototype have been tested. The test results show that all indicators of quick biochemical detector can meet clinical requirements, so quick biochemical detector reaches the practical level.The primary coverage of this paper is listed as following:(1) The research status of biochemical detector has been analyzed. The structure characteristics and existing problems of current biochemical detector have been researched.(2) The principle of biochemical detection based on spectrophotometry and its requirement for instrument design has been analyzed. According to the existing theory and technology, optimization scheme of quick biochemical detector system structure has been put forward.(3) According to overall design scheme, the design of optical system, thermostatic sample cell system, sample scanning system and the various parts inside instrument has been completed. Each module which is inside instrument has been distributed reasonably and the structure of instrument shell has been designed. Optimal design of the whole instrument structure has been completed.(4) In terms of the whole structure, processing and fabrication of each module has been completed and prototype has been developed. Moreover, the errors of instrument structure and their influence on measurement results have been analyzed.(5) According to the verification regulation stipulated by state, performance test of quick biochemical detector has been made to test performance parameters of practical prototype. Moreover, clinical test of practical prototype has been completed and all test results have been analyzed. The results show that all indicators of quick biochemical detector can meet the national requirements and quick biochemical detector can satisfy the need of clinical application.