课程 | 基于数字万用表的传感器测量基础| 是德科技

第1课——简介——使用数字万用表（DMM）进行传感器测量

本课程将介绍课程目标、主题以及学习使用数字万用表（DMM）进行传感器测量基础知识的益处。

第2课——传感器市场的增长

概述了传感器市场及其增长驱动力，例如物联网、智能设备、汽车、工业和医疗应用。同时还探讨了传感器测试与表征面临的挑战与机遇。

第3课——传感器的种类

介绍市场上各种类型的传感器及其如何改变我们的世界，例如温度传感器、压力传感器、湿度传感器、光传感器、运动传感器、声音传感器、气体传感器和生物传感器。

第4课——所有传感器的关键参数

对传感器关键参数的讨论，无论其物理测量类型如何，例如灵敏度、精度、分辨率、量程、线性度、滞后、重复性、漂移、响应时间和功耗。

第 5 课——选择合适数字万用表的五个注意事项

本演讲将介绍选择适合您传感器测试和表征需求的数字万用表（DMM）时需要考虑的关键因素，例如分辨率和精度、测量速度和吞吐量、测量功能和量程、连接性和自动化能力，以及成本与价值。

第6课——克服现代传感器挑战的技巧

演示如何使用数字万用表（DMM）通过多种方法和技术（如数据记录、数学函数、极限测试、直方图分析、趋势图分析、统计分析以及远程控制）对各类传感器进行特性分析与故障排查。

产品目录

数字万用表产品

Truevolt Series 6½- and 7½-Digit Bench Digital Multimeters   Measure with unquestioned Truevolt confidence   What truevolt technology means to you:   Measure with unquestioned Truevolt confidence Truevolt technology starts with an analog-to-digital converter that enables a patented metrology-grade architecture. Using this architecture, Keysight delivers a good balance of measurement resolution, linearity, accuracy, and speed at a value price, all derived and guaranteed per ISO / IEC 17025 industry standards.   Worry about the quality of your design, not the quality of your measurements Noise and injected current: Keysight Truevolt digital multimeters (DMMs) contribute less than 30% of the injected current as alternatives. Compared with some lower-cost alternatives, Truevolt DMMs offer almost 100% less noise.   Input bias current Ideally, no current flows into the measurement terminals of your DMM. In real measurement situations, input currents create additional measurement errors. Truevolt DMMs take care of input bias current. Some alternative DMMs offer 20% or more, poorer performance (some are too noisy to measure).   Digital AC root-mean-square (RMS) measurements For meters in this class, only Keysight uses digital direct sampling to make AC RMS measurements. The result is a true RMS calculation technique that avoids the slower response of analog RMS converters used in all other vendors’ 6½-digit DMMs. This technique allows for crest factors up to 10 without additional error terms. This is a unique, patented technique — used only by Keysight.   Control, automate, and simplify  with PathWave BenchVue software Keysight PathWave BenchVue software for the PC eliminates many issues surrounding bench testing. By making it simple to connect, control instruments, and automate test sequences, you can move past the test development phase and access results faster than ever before. The DMM app in BenchVue enables control of DMMs to visualize measurements, perform data logging, and annotate captured data. Easily control your DMM to quickly build automated tests, log measurements, and save precious time.

白皮书

第7课——提高数字万用表测量吞吐量的7个技巧

As a test engineer, you will want to create a digital multimeter (DMM) measurement process that saves you test time. The benefits of increasing your benchtop multimeter measurement throughput are: • Increase manufacturing output and optimize shippable revenue • Optimize test equipment usage and efficiency • Reduce test footprint and capital cost • Reduce product development test time In this white paper, you will learn all the seven steps on how to increase your DMM’s testing speed to improve its overall measurement throughput: 1. Auto-zeroing 2. Simplify changes during testing 3. Optimize range variations 4. Optimize power line integration settings 5. AC settings and settling time 6. Turning off unnecessary functions 7. Optimize trigger delays

电子书

选购台式数字万用表的注意事项

The digital multimeter (DMM) is the most commonly used instrument on an engineer’s bench. We use it almost every day. Whether we are making a quick and simple voltage measurement or data logging temperature over a long period of time, our DMM just has to work. It is the workhorse of the engineering bench. In many ways, most of us are in a one-sided relationship with our DMMs. In exchange for all the work that it does, we expect very little maintenance and upkeep from our end in return. Even though the DMM is such an important instrument, we do not spend nearly enough time thinking about it. From concept to prototype turn-on and debugging all the way through testing and validation, the DMM is ever-present through the entire product cycle from beginning to end. This eBook will take a closer look at the DMM and all that it does. We will explore 10 things that you should know about DMMs. The topics covered are applicable whether you are considering your next DMM purchase or you want to get more from the DMM currently on your bench.

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