Palm sized universal oscillograph with USB bus power supply

A technology of oscilloscope and bus, which is applied in the field of general-purpose handheld oscilloscopes. It can solve the problems of bulky oscilloscopes, complicated design of oscilloscopes, and difficulty in marketing and promotion of test tools, and achieve the effects of reduced size, good market prospects, reliable heat dissipation analysis, and layout design.

Inactive Publication Date: 2008-01-16
ZHEJIANG DAHUA TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In order to achieve these goals, the oscilloscopes currently on the market are complex in design and comprehensive in design, and in terms of structure, they generally use some mechanical and electronic control and adjustment components, and often require power frequency transformers and switching power supplies. The volume is relatively large, Problems such as power consumption and interference make it difficult for low-cost, convenient and practical, small and handy test tools to be popularized

Method used

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  • Palm sized universal oscillograph with USB bus power supply
  • Palm sized universal oscillograph with USB bus power supply
  • Palm sized universal oscillograph with USB bus power supply

Examples

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Embodiment Construction

[0035] It can be seen from Figure 1 that, like other general-purpose digital storage oscilloscopes, the circuit between the signal input connector and the waveform display of the oscilloscope is a mixture of analog circuits and digital circuits. First, the signal conditioning under the control of operating state parameters, Convert and input, and then digitize these instantaneous signals with an analog-to-digital converter (ADC). Since the sampled data is then stored in memory, the waveform we see on the oscilloscope screen is always a reconstructed waveform from the collected data, rather than an immediate, continuous waveform display of the signal applied to the input connection. Therefore, adding a high-speed USB communication module does not change the principle, basic features and functions of the digital storage oscilloscope; effectively extract all kinds of information, and more extensively establish advanced analysis libraries and tool libraries for data processing (su...

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Abstract

A portable univerval oscillascope consists of multistage signal nursing device, signal generating device, A / D converting ADC device, high frequency control device, USB communication control monolithic computer and a set of power supply control and switch device. It is featured as only using power supply from USB bus to realize oscillascope function of detecting AC power signal, rectifying waveform, digital logic, serial data, etc.

Description

technical field [0001] The invention relates to an oscilloscope, in particular to a handheld general-purpose oscilloscope powered by a USB bus. Background technique [0002] In recent decades, the rapid development of electronic and electrical technology has gradually penetrated into various fields of science and technology and social life. The development of all these related departments and industries requires a large number of electronic measuring instruments as means and equipment for information measurement and control; "no measurement If there is no identification, science and technology cannot advance.” The unprecedented fierce competition has also made various electronic measuring instruments increasingly become the necessary material basis for scientific research and production development. As a technology-intensive and knowledge-intensive product, an oscilloscope is one of the most versatile electronic measuring instruments, and is the basic condition and means for...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R13/20
Inventor 朱江明徐红启傅利泉郭斌林
Owner ZHEJIANG DAHUA TECH CO LTD
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