Electrical measurement device and method

Patent metadata

Field	Value
Publication number	US-2018337686-A1
Application number	US-201715599109-A
Country	US
Kind code	A1
Filing date	May 18, 2017
Priority date	May 18, 2017
Publication date	Nov 22, 2018
Grant date	—

Abstract

An electrical measurement device is described with an acquisition unit that is configured to receive an input signal, a post-processing unit, and a visualization unit. The acquisition unit comprises an acquisition trigger unit and an acquisition memory, the acquisition memory being configured to acquire sampled output data and to store the sampled output data by control of the acquisition trigger unit. The post-processing unit comprises a measurement unit that is configured to process at least parts of the sampled output data and to generate processed sampled output data. The post-processing unit further comprises a measurement trigger unit that is configured to evaluate the processed sampled output data in view of a measurement trigger condition, the measurement trigger unit being configured to output a measurement trigger event if the measurement trigger condition is met. The measurement trigger unit is further configured to control the visualization unit. Moreover, a method for operating an electrical measurement device is described.

First claim

The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows:

1 . An electrical measurement device, comprising:
an acquisition unit that is configured to receive an input signal, a post-processing unit, and a visualization unit,
said acquisition unit comprising an acquisition trigger unit and an acquisition memory, said acquisition memory being configured to acquire sampled output data and to store said sampled output data by control of said acquisition trigger unit,
said post-processing unit comprising a measurement unit that is configured to process at least parts of said sampled output data and to generate processed sampled output data,
said post-processing unit further comprising a measurement trigger unit that is configured to evaluate said processed sampled output data in view of a measurement trigger condition,
said measurement trigger unit being configured to output a measurement trigger event if said measurement trigger condition is met, and
said measurement trigger unit further being configured to control said visualization unit.

2 . The electrical measurement device according to claim 1 , wherein said measurement trigger unit is configured to control said visualization unit such that at least a portion of said processed sampled output data is visualized by said visualization unit if said measurement trigger event is output.

3 . The electrical measurement device according to claim 1 , wherein said measuring unit is configured to process said sampled output data with regard to at least one of frequency, period, rise time, fall time, pulse width, phase, mean value, root mean square, crest factor, standard deviation, peak-to-peak, minimum, maximum, amplitude, overshoot, undershoot, alternating current, direct current, active power, apparent power, reactive power, and power factor.

4 . The electrical measurement device according to claim 1 , wherein said electrical measurement device is configured to be set by a user or a manufacturer, the user or the manufacturer making a setting for said electrical measurement device.

5 . The electrical measurement device according to claim 4 , wherein said setting comprises at least one of halt acquiring and storing said sampled output data, continue acquiring and storing said sampled output data, store said sampled output data acquired prior to said measurement trigger event, and delete said sampled output data acquired prior to said measurement trigger event.

6 . The electrical measurement device according to claim 4 , wherein said measurement device is configured to request said setting if said measurement trigger condition is met.

7 . The electrical measurement device according to claim 1 , wherein said visualization unit comprises at least one of a display and a display memory.

8 . The electrical measurement device according to claim 1 , wherein said visualization unit is configured to generate and graphically display an acquisition marker selectable by the user if said measurement trigger condition is met.

9 . The electrical measurement device according to claim 7 , wherein said visualization unit is configured to graphically display at least a part of said sampled output data if the user selects said acquisition marker.

10 . The electrical measurement device according to claim 1 , wherein said electrical measurement device comprises an analog to digital converter, said input signal being digitized prior to the acquisition unit.

11 . The electrical measurement device according to claim 1 , wherein said acquisition memory is located between said acquisition trigger unit and said post-processing unit such that said sampled output data processed by said post-processing unit is retrieved from said acquisition memory.

12 . A method for operating an electrical measurement device, comprising the steps of:
receiving an input signal via an input; generating sampled output data from said input signal by using an acquisition trigger unit; acquiring and storing said sampled output data in an acquisition memory; processing at least a part of said sampled output data in a post-processing unit; evaluating said processed sampled output data in view of a measurement trigger condition by using a measurement unit and a measurement trigger unit; outputting a measurement trigger event if said measurement trigger condition is met; and providing at least a part of said sampled output data for visualization if said measurement trigger event is output.

13 . The method for operating an electrical measuring device according to claim 11 , wherein said sampled output data is processed with regard to at least one of frequency, period, rise time, fall time, pulse width, phase, mean value, root mean square, crest factor, standard deviation, peak-to-peak, minimum, maximum, amplitude, overshoot, undershoot, alternating current, direct current, active power, apparent power, reactive power, and power factor.

14 . The method for operating an electrical measurement device according to claim 12 , wherein the method further comprises the step of:
making a setting for said electrical measurement device.

15 . The method for operating an electrical measuring device according to claim 14 , wherein said setting comprises at least one of halt acquiring and storing said sampled output data, continue acquiring and storing said sampled output data, store said sampled output data acquired prior to said measurement trigger event, and delete said sampled output data acquired prior to said measurement trigger event.

16 . The method for operating an electrical measuring device according to claim 14 , wherein said setting is requested if said measurement trigger condition is met.

17 . The method for operating an electrical measuring device according to claim 12 , wherein a logger view is displayed, said logger view illustrating said sampled output data.

18 . The method for operating an electrical measuring device according to claim 17 , wherein said logger view indicates processed sampled output data by at least one corresponding acquisition marker graphically displayed if said measurement trigger condition is met, said acquisition marker being selectable by the user.

19 . The method for operating an electrical measuring device according to claim 18 , wherein a scope view is displayed if the user selects said acquisition marker, said scope view illustrating at least a part of said sampled output data view.

20 . The method for operating an electrical measuring device according to claim 12 , wherein said output signal corresponds to said input signal being digitized.

Assignees

• Rohde & Schwarz

Inventors

• Diegmann Philip

Classifications

• H03M2201/2344

  Electricity · mapped topic

• H03M1/52 Primary

  Input signal integrated with linear return to datum · CPC title

• G06F3/14 Primary

  Digital output to display device {; Cooperation and interconnection of the display device with other functional units} · CPC title

• G01R29/12

  Measuring electrostatic fields {or voltage-potential} · CPC title

• G06T2207/20056

  Discrete and fast Fourier transform, [DFT, FFT] · CPC title