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将激光诱导荧光技术应用于牙髓活力检测中,且利用荧光强度与牙髓活力状况的关系理论,分析与设计可行的检测仪。论文建立在检测的光学系统上,提出以AT89C51为控制执行器,采用H7712型高灵敏度光电倍增管接收反射的荧光信号;以高速12位A/D转换器为信号采集核心,并采用可编程式LCD液晶显示为终端输出,设计采集系统电路,基于LCD分析信号采集与显示系统的采集电路与功能程序设计。通过初步试验,根据仪器显示结果,能够明显区分死髓牙与健康牙齿。
The laser-induced fluorescence technique was applied to the detection of pulp vitality, and the relationship between fluorescence intensity and pulp vitality was used to analyze and design a feasible detector. The thesis is based on the optical system of detection, and the AT89C51 is taken as the control actuator. The H7712 high-sensitivity photomultiplier tube is used to receive the reflected fluorescent signal. The high-speed 12-bit A / D converter is the core of signal acquisition, LCD liquid crystal display for the terminal output, design acquisition system circuit, based on LCD analysis signal acquisition and display system acquisition circuit and functional programming. Through preliminary tests, according to the results of the instrument display, can clearly distinguish between dead teeth and healthy teeth.