Multi-channel and high-accuracy data acquisition unit

A data collector, high-precision technology, applied in the direction of instruments, analog/digital conversion, signal transmission systems, etc., can solve the problems of insufficient real-time analysis and processing and long-term continuous recording capabilities, narrow signal range, low precision, etc., to achieve Powerful test functions, improved industrial production efficiency, and high versatility

Inactive Publication Date: 2008-12-24
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In current industrial applications, data acquisition instruments all use single-chip microcomputer technology to form an embedded system to complete signal collection, analysis, display, and storage. Due to the limitations of single-chip performance and technology, there are the following shortc

Method used

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  • Multi-channel and high-accuracy data acquisition unit
  • Multi-channel and high-accuracy data acquisition unit
  • Multi-channel and high-accuracy data acquisition unit

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Embodiment Construction

[0033] The overall structure of the system is as figure 1 As shown, a multi-channel, high-precision data collector, including:

[0034] The microprocessor module 3 composed of CPU JP1 connected with watchdog circuit U27 and JTAG debugging port JP2 is used to send control signals, calculate measurement signals, and communicate with the host computer;

[0035] The power module 4 composed of a voltage stabilizing circuit 401, a power supply ripple removal circuit 402, a reference voltage source circuit 403, a precision current source circuit 404, and an A / D power supply isolation circuit 405 is used to provide multi-channel, high-precision data collectors power supply;

[0036] The data acquisition module 5 composed of two input signal terminals J1, J2 and a sensor circuit is used to collect and output physical signals, and also includes a signal selection module 1 and an analog measurement module 2 .

[0037] The signal selection module 1 includes: a channel selection circuit ...

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Abstract

The invention discloses a multi-passage and high precision data collector, belonging to data collectors. The data collector comprises a data collection module, a power module, a micro processor module, a stimulation measure module and a signal selection module, wherein, the signal selection module comprises a passage selection circuit, a current selection circuit, a bus and a function selection circuit, and the stimulation measure module comprises an amplification circuit, an A/D conversion circuit, an external reference source circuit and an optical coupling isolation circuit. The data collector has high system automation and intelligence and the precision as high as one thousand which is higher than the current industrial standard; also the testing function is widely universal and the collection passage is various.

Description

technical field [0001] The invention relates to a multi-channel, high-precision data collector in the field of industrial production. Background technique [0002] Modern industrial processes are developing in the direction of complexity, high speed, and large scale. With the rapid development of high-tech such as computer technology, information technology, and network technology, data acquisition, especially high-precision data acquisition instruments, are used as measurement instruments in industrial processes. And the intelligence of the instruments that control the characters is getting higher and higher. At the same time, in many occasions, the collected data is often more than one kind, or it is necessary to collect multiple data to monitor the collected data together, which requires the data collection instrument to have multiple collection functions and multi-channel collection functions data acquisition instrument. The introduction of such smart instruments has p...

Claims

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Application Information

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IPC IPC(8): G08C19/00G08C19/16H03M1/34
Inventor 刘必振钱丽丽刘昊姚国良陆生礼
Owner SOUTHEAST UNIV
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