A multi-channel NV level AC voltage detection device and detection method
A technology for detecting equipment and AC voltage, which is applied in the direction of measuring current/voltage, phase angle between voltage and current, and measuring devices, etc. It can solve the external interference of lock-in amplifiers, the inability to perform multi-channel parallel testing, and poor testing flexibility, etc. problems, to achieve the effect of improving anti-interference ability, facilitating sharing, and preserving completeness
Active Publication Date: 2017-06-06
陕西海泰电子有限责任公司
View PDF4 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0006] Aiming at the deficiencies of existing lock-in amplifiers that are easily affected by external interference, low test accuracy, unable to perform multi-channel parallel test, and poor test flexibility, the present invention provides a multi-channel nV-level AC voltage detection device and detection method
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0072] The invention provides a multi-channel nV level AC voltage detection device, such as figure 1 and Figure 7 As shown, it includes an amplification filter unit, a multi-channel synchronous data acquisition card and a control unit; the multi-channel synchronous data acquisition card can complete the digitization of analog signals, and the control unit can use a computer to realize data storage, processing and analysis.
[0073] The amplification and filtering unit is connected to the multi-channel synchronous data acquisition card through a shielded cable, and the amplification and filtering unit is used to amplify and filter the measured signal and output it to the multi-channel synchronous data acquisition card.
[0074] The amplifying and filtering unit includes at least one stage of amplifying and filtering circuit, and each stage of amplifying and filtering circuit includes an amplifier and a filter connected to the amplifier through a shielded cable; The filter cir...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a multi-channel nV-grade AC voltage detecting device and method. The detecting device comprises a amplifying and filtering unit, a multi-channel synchronous data acquisition card and a control unit. The amplifying and filtering unit is connected with the multi-channel synchronous data acquisition card through shield cables and used for amplifying, filtering and then outputting signals to be detected to the multi-channel synchronous data acquisition card; the amplifying and filtering unit comprises at least one stage of amplifying and filtering circuit, and every stage of the amplifying and filtering unit comprises an amplifier and a filter connected with the amplifier through shield cables; if the amplifying and filtering unit is composed of two or more stages of the amplifying and filtering circuits, the amplifying and filtering circuits are connected through shield cables; the multi-channel synchronous data acquisition card transmits received signals to the control unit. The multi-channel nV-grade AC voltage detecting device has the advantages of being free from external interference, high in testing precision and testing flexibility and the like and has guiding significance for study of small signal testing technologies.
Description
technical field [0001] The invention relates to the technical field of weak signal detection, in particular to a multi-channel nV-level AC voltage detection device and a detection method. Background technique [0002] In various activities of engineering technology, scientific research and production practice, nV-level AC voltage signal detection is widely used in petroleum logging, optical analysis, superconducting material evaluation, metal material tension test, Auger electron spectroscopy, metal detection, eddy current flaw detection , electron beam measurement and other fields have a wide range of applications. Because the background noise in these fields is very strong, and the measured signal is very weak, it is very difficult to detect effective signals from them. It is a hot and difficult point in the field of weak signal detection technology to conduct research on nV level AC voltage signal detection, explore new detection methods, and develop new detection equipm...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G01R19/00G01R25/00
Inventor 郭恩全宁成军韩建伟杨朋黄姝
Owner 陕西海泰电子有限责任公司