CAJ | 학술논문

针对倾角仪小型化、数字化与高精度的要求，文中设计了以加速度传感器SCA103T和AVR单片机ATmega8A为核心的数字倾角仪，并阐述了其软硬件实现。硬件设计着重考虑了其数字接口以及抗干扰能力；软件设计主要说明了ATmega8A与上位机间串行通信、与SCA103T间SPI通信及数字滤波方法的实现。最后进行了非线性误差标定与补偿，并对温度补偿进行了说明。实验结果表明，该倾角仪精度可达0.02°，输出频率可达30 Hz，通信稳定，测量重复性高，满足实际需求。
침대경각의소형화、수자화여고정도적요구，문중설계료이가속도전감기SCA103T화AVR단편궤ATmega8A위핵심적수자경각의，병천술료기연경건실현。경건설계착중고필료기수자접구이급항간우능력；연건설계주요설명료ATmega8A여상위궤간천행통신、여SCA103T간SPI통신급수자려파방법적실현。최후진행료비선성오차표정여보상，병대온도보상진행료설명。실험결과표명，해경각의정도가체0.02°，수출빈솔가체30 Hz，통신은정，측량중복성고，만족실제수구。
Aiming at miniaturization , digitization and high precision of the inclinometer , this paper presented a digital incli-nometer based on the accelerometer SCA 103T and the AVR microcontroller ATmega 8A.The hardware design focused on digital in-terface and anti-interference capacity .The software design illustrated serial communication between ATmega 8A and the host com-puter,communication between ATmega8A and SCA103T through Serial Peripheral Interface (SPI) and the digital filtering ap-proach .Then the non-linear measurement error was calibrated and compensated .The temperature compensation was explained as well.Experiment results show that this inclinometer ’ s precision is 0.02 °and its output frequency can reach 30 Hz with stable communication and high measurement repeatability ,this meeting the practical demunds .