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介绍了一种新型微型飞行器高度计的设计技术,主要是利用微型数字压力传感器和PIC单片机串行通信,读取传感器中压力、温度值及补偿参数,用软件进行温度补偿和高度计算;经试验室测试,其绝对高度误差小于±3m。且该高度计具有体积小、重量轻、功耗低、工作可靠等特点。通过美国微芯(MICROCHIP)的最新单片机PIC16F876与计算机通讯,实现远距离的自动控制,控制系统经使用效果良好。本文给出了系统设计原理,单片机程序流程和硬件电路。
The design technique of a new type of micro-aircraft altimeter is introduced. The main work is to read the pressure, temperature and compensation parameters in the sensor by using the micro-digital pressure sensor and the PIC single-chip serial communication. Software temperature compensation and height calculation are carried out. Test, the absolute height error of less than ± 3m. And the altimeter has a small size, light weight, low power consumption, reliable and so on. Through the United States Microchip (MICROCHIP) latest PIC16F876 microcontroller communication with the computer, to achieve long-distance automatic control, the control system by the use of good results. This article gives the principle of system design, microcontroller program flow and hardware circuit.