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PyMeasure:用Python助力工程和科学测量自动化与可视化的利器

  • 2026-02-02 03:21:05
PyMeasure:用Python助力工程和科学测量自动化与可视化的利器

在工程和科学研究领域,实验测量和可视化是不可或缺的一部分。然而,传统的测量方法往往面临着许多挑战,例如仪器控制复杂、数据采集效率低、数据分析繁琐等等。为了简化这些流程,一个名为 PyMeasure 的 Python 库应运而生。它提供了一套完整的工具集,帮助用户轻松构建自动化测量系统,并实现数据的实时可视化,让科学实验变得更加高效便捷。

PyMeasure 的核心优势

1. 面向对象的仪器控制: PyMeasure 采用面向对象编程的方式来定义仪器,将底层的仪器控制命令 (如 SCPI 和 GPIB) 封装成易于理解的 Python 接口。用户无需深入研究仪器的通信协议,只需关注实验本身的逻辑设计。

2. 丰富的仪器支持: PyMeasure 包含了大量常用的仪器类,覆盖了各种类型的仪器,包括示波器、函数发生器、电源、功率计等等。此外,PyMeasure 还支持通过 PyVISA 包连接各种支持 VISA 协议的仪器,极大地扩展了其兼容性。

3. 强大的实验管理功能: PyMeasure 提供了 Procedure 类和 Experiment 类,方便用户定义复杂的测量流程,并自动执行实验、采集数据。用户可以通过编写简单的 Python 代码来控制实验的步骤、参数设置、数据保存等等,从而实现实验的自动化。

4. 直观的图形界面: PyMeasure 内置了强大的图形界面,可以实时绘制数据,并提供各种功能,例如数据缩放、曲线拟合等等。这使得用户可以直观地观察实验结果,并进行实时分析,提高了实验效率和研究效率。

5. 基于 Pint 的物理量处理: PyMeasure 支持 Pint 库,方便用户使用物理量进行计算,避免单位转换错误。这样一来,用户可以使用物理量进行计算,并直接获得结果,无需手动进行单位转换。

PyMeasure 的实际应用场景

PyMeasure 可以应用于各种科学研究领域,例如:

  • • 物理实验: 例如,使用 PyMeasure 控制电源、示波器等仪器,进行电学测量、光学测量等等。

  • • 化学实验: 例如,使用 PyMeasure 控制传感器,进行 pH 值、温度、湿度等参数的测量。

  • • 生物实验: 例如,使用 PyMeasure 控制显微镜,进行图像采集、数据分析等等。

  • • 材料科学实验: 例如,使用 PyMeasure 控制材料测试设备,进行材料性能测试等等。

快速上手指南

1. 安装 PyMeasure:

  • • 可以使用 pip 来安装 PyMeasure,在终端中运行以下命令:

pip install pymeasure

2. 连接仪器:

from pymeasure.instruments.keithley import Keithley2400# 创建仪器对象keithley = Keithley2400("GPIB0::1"

3. 设置仪器参数:

keithley.voltage = 1.0

4. 读取仪器数据:

current = keithley.current

5. 定义实验流程:

from pymeasure.experiment importProcedure,ExperimentclassVoltageSweep(Procedure):    def__init__(self, keithley, start_voltage, stop_voltage, step_voltage):        ...# 创建实验对象experiment =Experiment(VoltageSweep(keithley,0,5,0.1))# 运行实验experiment.run()# 保存数据experiment.results.save("voltage_sweep.csv")

6. 使用图形界面:

from pymeasure.display importManagedWindowfrom pymeasure.instruments.keithley importKeithley2400classVoltageSweepWindow(ManagedWindow):def__init__(self, keithley):super().__init__()...defstart_sweep(self):# 启动电压扫描for voltage inrange(0,5,0.1):...# 创建窗口对象window =VoltageSweepWindow(keithley)# 显示窗口window.show()

总结

PyMeasure 提供了简洁易用的 API 和丰富的功能,可以帮助用户轻松构建科学测量系统,提高实验效率。无论是初学者还是经验丰富的研究人员,都可以使用 PyMeasure 来进行各种科学测量,并利用其强大的可视化功能来分析数据,提高科研效率。

项目地址:https://github.com/pymeasure/pymeasure

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  1. CONNECT:[ UseTime:0.000747s ] mysql:host=127.0.0.1;port=3306;dbname=f_mffb;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000790s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.002759s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.004366s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000855s ]
  6. SELECT * FROM `set` [ RunTime:0.000298s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000720s ]
  8. SELECT * FROM `article` WHERE `id` = 463667 LIMIT 1 [ RunTime:0.014054s ]
  9. UPDATE `article` SET `lasttime` = 1770535455 WHERE `id` = 463667 [ RunTime:0.009833s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 66 LIMIT 1 [ RunTime:0.004537s ]
  11. SELECT * FROM `article` WHERE `id` < 463667 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000802s ]
  12. SELECT * FROM `article` WHERE `id` > 463667 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.009459s ]
  13. SELECT * FROM `article` WHERE `id` < 463667 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.005338s ]
  14. SELECT * FROM `article` WHERE `id` < 463667 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.001255s ]
  15. SELECT * FROM `article` WHERE `id` < 463667 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.020640s ]
0.213572s