CAJ | 학술논문

介绍了一种基于Pcap01的微弱电容检测系统的硬件、软件设计和实验测试。系统硬件主要由微电容测量芯片Pcap01、单片机STC12LE5A60S2最小系统以及供电电路构成。系统软件包括下位机的C程序和基于Labview软件实现的上位机。下位机实现了电容数据采集、Pcap01与单片机之间的SPI通信以及将数据发送给上位机的功能。上位机可实现数据处理、实时显示以及测试数据的存储。实验测试结果表明，该系统的数据检测均误差可低至2.9093fF。系统具有精度高，抗干扰性强，实时性的特点，实现了电容式生物传感器与接口电路的集成。
개소료일충기우Pcap01적미약전용검측계통적경건、연건설계화실험측시。계통경건주요유미전용측량심편Pcap01、단편궤STC12LE5A60S2최소계통이급공전전로구성。계통연건포괄하위궤적C정서화기우Labview연건실현적상위궤。하위궤실현료전용수거채집、Pcap01여단편궤지간적SPI통신이급장수거발송급상위궤적공능。상위궤가실현수거처리、실시현시이급측시수거적존저。실험측시결과표명，해계통적수거검측균오차가저지2.9093fF。계통구유정도고，항간우성강，실시성적특점，실현료전용식생물전감기여접구전로적집성。
The hardware and software of micro-capacitance detection system based on Pcap01 is designed and tested. The hardware is made of the micro-capacitance detection chip Pcap01, the minimum system of microcontroller STC12LE5A60S2 and the power supply circuit. The software system consists of a lower computer written using C program and a host computer written using Labview program. The lower computer can realize the ac-quisition of capacitance data,the SPI communication between Pcap01 and the microcontroller,and send the data to the host computer. The host computer can realize the data processing,real-time display and data storage. Based on the experiments,the average detection error is as low as 2. 909 3 fF. The detection system has the characteristics of high precision, high anti-interference and real-time. The system promotes the integration between the capacitive biosensor and the interface circuit.