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受到人工不合理作业的影响,传统激光功率测量系统所测数据的误差较大。为加强激光功率测量数据的准确性,提出基于Lab VIEW的激光功率测量系统。该系统包括激光功率计和计算机,激光功率计由光电探头和单片微控制器电路组成。光电探头将激光能量分散,把特定光信号传递至单片微控制器电路,利用单片微控制器控制电路工作温度,避免零点漂移现象的产生,保证激光功率测量系统按照一定的顺序完成算法指令。激光经由光电探头传输到单片微控制器电路,通过锁相放大器将激光两端电压放大为所需值,增强激光功率测量系统的灵敏度。软件设计过程中,先塑造锁相放大器目标函数,再利用Lab VIEW软件对激光功率测量算法程序进行编译。测试实验结果表明,所提方法能够有效避免人工作业误差的产生,提高激光功率测量结果的准确性,具有较高的应用价值。
By artificial unreasonable operation of the impact of the traditional laser power measurement system measured data errors. To improve the accuracy of laser power measurement data, a laser power measurement system based on Lab VIEW is proposed. The system includes a laser power meter and a computer. The laser power meter consists of a photoelectric probe and a monolithic microcontroller circuit. The photoelectric probe disperses the laser energy and transmits a specific optical signal to a single-chip microcontroller circuit. The single-chip microcontroller controls the operating temperature of the circuit to prevent zero drift and ensure that the laser power measurement system performs the algorithm instruction according to a certain sequence . The laser is transmitted to the monolithic microcontroller circuit via the photoelectric probe, and the voltage across the laser is amplified to the required value by the lock-in amplifier to enhance the sensitivity of the laser power measurement system. In the software design process, the objective function of the lock-in amplifier is first shaped, and then the software program of laser power measurement is compiled by using the LabVIEW software. The experimental results show that the proposed method can effectively avoid manual errors and improve the accuracy of laser power measurement, which has a high application value.