Electrical measurement device and method

Patent metadata

Field	Value
Publication number	US-10976978-B2
Application number	US-201715599109-A
Country	US
Kind code	B2
Filing date	May 18, 2017
Priority date	May 18, 2017
Publication date	Apr 13, 2021
Grant date	Apr 13, 2021

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, wherein the sampled output data is processed by the measurement unit such that the processed sampled output data contains additional information compared to the 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 unit being established separately from the measurement trigger unit,
said measurement unit being configured to process the sampled output data, wherein a certain parameter to be used by the measurement trigger unit afterwards is measured,
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,
wherein said visualization unit is configured to generate and graphically display an acquisition marker selectable by a user if said measurement trigger condition is met, and wherein said visualization unit is configured to graphically display at least a part of said sampled output data meeting said measurement trigger condition if a user selects said acquisition marker.

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 electrical measurement device comprises an analog to digital converter, said input signal being digitized prior to the acquisition unit.

9. 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.

10. 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, thereby obtaining processed sampled output data, wherein the sampled output data is processed such that the processed sampled output data contains additional information compared to the sampled output data;
evaluating said processed sampled output data in view of a measurement trigger condition by using a measurement unit and a measurement trigger unit, wherein said measurement unit is established separately from the measurement trigger unit;

processing the sampled output data by means of the measurement unit, wherein a certain parameter to be used by the measurement trigger unit afterwards is measured;
outputting a measurement trigger event if said measurement trigger condition is met;
providing at least a part of said sampled output data for visualization if said measurement trigger event is output, and
generating and graphically displaying an acquisition marker selectable by a user if said measurement trigger condition is met, wherein at least a part of said sampled output data meeting said measurement trigger condition is graphically displayed if a user selects said acquisition marker.

11. The method for operating an electrical measuring device according to claim 10 , 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.

12. The method for operating an electrical measurement device according to claim 10 , wherein the method further comprises:
making a setting for said electrical measurement device.

13. The method for operating an electrical measuring device according to claim 12 , 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.

14. The method for operating an electrical measuring device according to claim 12 , wherein said setting is requested if said measurement trigger condition is met.

15. The method for operating an electrical measuring device according to claim 10 , wherein a logger view is displayed, said logger view illustrating said sampled output data.

16. The method for operating an electrical measuring device according to claim 15 , 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 a user.

17. The method for operating an electrical measuring device according to claim 16 , 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.

18. The method for operating an ele

Assignees

• Rohde & Schwarz

Inventors

• Diegmann Philip

Classifications

• G09G5/001 Primary

  Arbitration of resources in a display system, e.g. control of access to frame buffer by video controller and/or main processor · CPC title

• G01R13/0254

  for triggering, synchronisation · CPC title

• G01R13/0236

  for presentation of more than one variable · CPC title

• G06F3/14 Primary

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

• G06T2207/20056

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