电子测量(国外英文资料).doc

电子测量 There is no science without measurement The first chapter Section 1 measurement and measurement A measurement is a set of operations that determine the value of a value. Measurement is an important means to reveal the laws of the objective world and to describe the world around them in digital language. Broadly speaking, the conclusions of any experimental science are the results of statistical inferences about experimental data. When the data is obtained, it is measured. The information industry contains many factors, including information gathering mainly by measurement and instrument, information transmission mainly by communication, information processing mainly by computing technology. Measurement is the activity that realizes unity of unit and quantity accurate and reliable. It is characterized by its unity, accuracy and legitimacy. Section 2 characteristics and applications of electronic measurement In the broad sense, any measurement that takes advantage of electronic technology can be said to be electronic measurement. The main characteristics of electronic measurement The measuring frequency is extremely wide Denominated in wide range Because the size of the physical quantity varies greatly, the measuring equipment is required to measure a wide range of measurements, and the electronic measurements can meet that requirement. Measuring accuracy is high The accuracy of electronic measuring instruments and systems is usually much higher than other types of measurements. Especially the measurement of time and frequency. High resolution and high sensitivity The resolution is the minimum value difference that the display device can effectively identify. The resolution is the difference between the minimum and the full range of the valid discrimination, the relative representation of the resolution. Resolution and resolution reflect the ability of the instrument to distinguish small signals. Sensitivity is the change in measuring the response of the instrume