多参数血细胞检测的电路实现

Realization of the Circuit of the Blood Corpuscle Measurement with Varied Parameters

本文介绍了基于电阻法的血细胞计数分析仪的原理及信号处理硬件结构。采用计算机对整个数据采集系统进行控制和管理。设计了高精度恒流源、程控放大器、直流电平跟随复位电路及峰值检测电路,较好地解决了微弱信号的提取问题,并解决了仪器的测量速度和测量精度的矛盾。

This paper introduces the principle and structure of the blood corpuscle analyzer based on resistance method, designs high precision constant current source, program controller, following reset circuit of DC and pack detector. The picking up faintness signal and contradiction between measuring speed and precision are solved preferably. The system is controlled by the computer.