Alternating current signal measurement device, system and method

Abstract

The invention discloses an alternating current signal measurement device, an alternating current signal measurement system and an alternating current signal measurement method and relates to the field of alternating current electric signal measurement. The device is provided with an access part 1, a measurement part 2 and a control part 3, wherein the output end 10 of the access part 1 is connected with the input end of the measurement part 2 and is also connected with an instantaneous discharge circuit 14 controlled by the control part 3. The control part 3 can control the access part 1, the measurement part 2 and the instantaneous discharge circuit 14 to perform the instantaneous discharge operation of the output end 10, and adopts the following control steps: firstly, turning on the instantaneous discharge circuit; secondly, delaying a preset time period; and thirdly, turning off the instantaneous discharge circuit. The device of the invention accelerates the elimination of an abrupt signal which appears at the position of the output end 10 of the access part 1 and is caused by the quick change of the gain of a programmable amplifying circuit 7 in the access part 1. The device has the characteristics of reducing measurement access time, along with simple structure and convenient control.

Description

technical field [0001] An AC signal measuring device, system and method relate to the field of measuring electric variables, in particular to the field of measuring AC signals. Background technique [0002] The production, development, maintenance and repair of electronic products are inseparable from measuring devices. Among many measuring devices, the AC measurement function is one of the most basic measurement functions. At present, many measuring devices include AC voltage or current. Measurement functions, such as digital multimeters, oscilloscopes, waveform analyzers, and some comprehensive measurement instruments or systems, etc. [0003] In the prior art, the AC signal measurement device usually includes an access part 1 for accessing the AC signal to be measured and adjusting the measurement gear, a measurement part 2 for measuring the AC signal and a control part 3, the control part 3 is used to control access part 1 and measurement part 2 to perform AC signal mea...

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Problems solved by technology

[0028] In the prior art, it is difficult to shorten this attenuation process by simply adjusting the component parameters, such as by adjusting the capacitor C1 or changing the resistance of R1. The main reason is that whether adjusting the capacitor C1 or changing the resistance of R1, the The adjustment of the range will lead to the decline of the measurement accuracy of the measurement part 2

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