PIC单片机在激光电源中的应用

Application of laser power supply based on PIC single-chip

设计了一种由电池供电的手持激光测距仪的APD偏置高压电源。该电源采用PICl6C782单片机作为主控芯片,从低压源产生高压电,通过脉宽调制改变输出电压提供给探测器和激光器,实现闭环控制。阐述了该电源Boost型直流升压的基本工作原理、硬件组成和软件设计。通过实验验证,该设计结构简单,功耗低,体积小,输出电压恒定可靠。

A kind of APD bias high - voltage power supply was designed which uses in a battery - powered handheld Laser Range Finder. Using PIC16C782 Single - chip as the master control chip, the power supply generates high - voltage from a low- voltage source. Through PWM output voltage change to laser detectors, and closed - loop control was realized. This paper introduces the basic principle of the DC boost power supply, and the design of hardware and software. It is proved by test, the design is simple,low power consumption, small size, the output voltage constant and reliable.