Software Design And System Improvement Of An Electrochemical Analyzer

With the rapid development of life science, a lot of researchers begin to pay attention to the development of visual instruments. And a part of relatively mature instruments have been applied to clinical diagnosis and pathological research. Compared with physical imaging technology, the chemiluminescence imaging technology is better in sensitivity, allowing us to get deeper insight into the reaciton processes and observe more complex chemical reaction systems, such as the metabolic processes of life. This is also the reason why new apparatuses tend to use the chemiluminescence imaging technology. Electrochemical luminescence(ECL) is actually an optical radiation from the electrochemical reaction. ECL analysis is a method to analyze the intensity of the optical radiation, which not only has the advantages of easy control, but also has high sensitivity of the chemiluminescence method. ECL imaging technology is also based on the optical radiation. In summary, the research and design of the ECL imaging analysis instrument is very significant.In this thesis, the control software of the electrochemical part and the mobile platform was designed for an electrochemical luminescence imaging analyzer, and an improved scheme was put forward for the existing mobile platform system.In the electrochemical part, four common ECL analysis methods were introduced firstly, then the software part was designed according to the introduction. The software mainly completes the selection of electrochemical method and settings of the corresponding parameter, and draws the corresponding electrochemical and chemical luminescence mapping according to the collected data.In the part of mobile platform, the design of the mobile platform system was described firstly, with emphasis on the use of L6470. Then, the auto moving algorithm and communication protocol of the mobile platform control software were designed. An auto mobile algorithm for three base points was designed in this thesis, including searching the location of the base point and the process of automatical locating. The core of the algorithm is to return to zero automatically, ensuring that auto moving is starting from zero every time. In order to complete the data transmission between the computer and the instrument, the communication protocol was designed in detail in this thesis, including the circumscription of the data frame format and the detailed communication flow between the computer and the instrument. At last, an improved scheme was proposed to resolve the problem of the existing mobile platform system, using the output signal of the Direct Digital Synthesizer(DDS) as the external input signal of L6470. And the comparison of the two schemes in accuracy and response time was given, proving that improved system is better than the existing one.Finally, on the basis of the two parts of the software design above, the central control part in PC was proposed, including the overall design of the software and the specific design of the various modules. After an pratical test in PMT detection and BPE imaging using the software, the result illustrates that the processing effect of the software reaches expected target.