便携式多参数生化检测仪的研制

A MULTI-PARAMETER BIOCHEMICAL DETECTOR

多参数生化检测仪是基于MOS器件基本原理设计完成的,可以用来检测因待测物质浓度变化而引起的膜电位变化.文中介绍了该检测仪的基本原理,设计方案.研制出的便携式多参数生化检测仪技术指标达到:检测范围为pH0～14或0～5V,测量精度为pH0.1或1.0mV,制成后的检测仪检测范围为0～1000mV,测量反应时间小于4s,可以使用外接9V直流电源或干电池.尺寸为134mm×70mm×20mm,重约150g,具有便携、使用简便、小型、稳定、可靠等优点,可以方便地用于实验室和室外测量现场,操作简单,无需专业人员.

The multi-parameter biochemical detector is designed based on the principle of MOSFET.It can be used for measuring the file voltage which varies with the concentration of specific substances.The design scheme and the principle of the detector are discussed in the article.The detector with a detect range 0～14 pH or 0～5 V and precision 0.1 pH or 1.0 mV is portable and easy to use.