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A digital multimeter that displays measurement results with waveforms

A digital multimeter and waveform display technology, which is applied in digital variable/waveform display, measuring device, measuring electrical variable, etc., can solve the problems of data loss and users' inability to observe the change trend, etc., and achieve the effect of simple design and easy observation

Active Publication Date: 2015-08-19
RIGOL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in fact, the waveform scrolling display method will also introduce new problems, for example, it will cause data loss, so that users cannot observe the waveform that can reflect the changing trend of all measurement data

Method used

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  • A digital multimeter that displays measurement results with waveforms
  • A digital multimeter that displays measurement results with waveforms
  • A digital multimeter that displays measurement results with waveforms

Examples

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Embodiment Construction

[0030] In order to further illustrate a digital multimeter of the present invention that uses waveforms to display measurement results, the preferred embodiments selected by the present invention will be described in detail below in conjunction with the accompanying drawings.

[0031] The preferred embodiment of the present invention has selected digital multimeter 1, with reference to figure 2 , The digital multimeter 1 includes a measurement circuit 2 , an analog-to-digital conversion circuit 3 , a control circuit 4 , a memory 5 and a display screen 6 .

[0032] In this embodiment, the digital multimeter 1 can be used to measure DC voltage, DC current, AC voltage, AC current, resistance and capacitance.

[0033] As an example, in this implementation, the multimeter 1 may also be a digital multimeter with less measurement functions, such as a multimeter with only voltage and current measurement functions.

[0034] As another example, the multimeter 1 can also be a digital m...

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PUM

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Abstract

The invention discloses a digital universal meter for displaying a measurement result by using a waveform. The digital universal meter is provided with a measurement unit, a display unit and a control unit, wherein the display unit comprises a tendency waveform display unit (11) and a real-time waveform display unit (13) which are arranged transversely and adjacent with each other closely. When a compression condition of real-time waveform displayed data is met, the real-time waveform displayed data is converted to be a part of tendency waveform displayed data by using a dynamic compression ratio; and when a compression condition of the tendency waveform displayed data is met, the tendency waveform displayed data is compressed by using a fixed compression ratio, so the dynamic compression ratio is increased. The digital universal meter can execute a large number of measurement tasks for long time; furthermore, the waveform of a current measurement signal can be displayed in real time by using a real-time waveform curve (L), and a blind area is avoided; moreover, a user can learn about the change tendency of the current measurement signal through a tendency waveform curve (E) to forecast a future measurement result.

Description

technical field [0001] A digital multimeter for displaying measurement results with waveforms of the present invention relates to the field of electrical variable measuring devices, in particular to the field of digital multimeters that can display measurement values ​​with waveforms. Background technique [0002] As we all know, digital multimeters are mainly used to perform voltage measurement, current measurement and resistance measurement. Some digital multimeters can also be used for capacitance, inductance, diode measurement, or physical quantities such as temperature, pressure, humidity, speed or acceleration. Some The digital multimeter can even perform measurement tasks regularly like a commonly used data acquisition system, such as regularly collecting and displaying the collected measurement data. [0003] There are many ways for the digital multimeter to display the measurement results, among which the method of digitally expressing the measurement results is the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R13/00
Inventor 王悦王铁军李维森
Owner RIGOL
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