Intelligent high-speed real time data sampling device

A sampling device, real-time data technology, applied in electrical digital data processing, special data processing applications, instruments, etc., can solve the problems of difficulty in guarantee, difficult maintenance, low cost performance, meet the requirements of convenient sampling rate, reduce the number of components, The effect of high input impedance

Inactive Publication Date: 2003-12-10
NORTHEASTERN UNIV +1
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Problems solved by technology

[0003] 1) The data sampling frequency is not high, and the scalability is not strong
Since the single-chip microcomputer is used as the central processing unit, and it is integrated with the A/D converter in one chip, it is not only difficult for high-speed real-time data sampling to be limited by the crystal oscillator frequency of the processor and the channel and conversion rate of the A/D converter. Meet the requirements, and limit the number of channels of sampled data and its scalability
[0004] 2) The synchronization of sampling time is difficult to guarantee, and when remote communication is realized, it is difficult to guarantee whether the data tra

Method used

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Embodiment Construction

[0021] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0022] figure 1 The operation center embedded microcomputer 1 of the sampling device of the present invention adopts PC / 104 standard industrial control bus, 16-bit version, i.e. 104 bus pins (double rows of pins and jacks), its effective signal lines and control The line is fully compatible with PC / AT; it has network function, comes with a gateway, can support all network operations, and supports TCP / UDP programming.

[0023] The bus expansion port 2 is the PCI slot of the embedded microcomputer 1, which enables the bus connection of the embedded microcomputer 1, the A / D converter and the counting board 5 and the conversion of the pins, and converts 104 pins of the PC104 into 96 pins. Used to connect with 96-pin A / D converter and counting board. The A / D converter 3 adopts AC1558, which is a 12-bit A / D converter with...

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Abstract

The present invention relates to an intelligent high-speed real-time data sampling equipment. The working state of the embedded microcomputer control device is connected with A/D converter and counting board by means of bus extension interface, the multiple discrete input signal and multiple continuous input signal are respectively connected with counting board and A/D converter by means of photoelectric isolator and filter circuit board; the embedded microcomputer is connected with GPS receiving system by means of serial port, and can implement communication with subsequent equipment of upward transmission machine, etc. by means of web card, and is connected with soft disk driver, electronic hard disk, keyboard, printer, display and watchdog circuit by means of internal bus.

Description

Technical field [0001] The invention relates to an intelligent data sampling device, in particular to a data sampling device used for monitoring pipelines and containers of various liquids, gases and fluid media in the production process and environment monitoring. Background technique [0002] Due to the diversity of field application conditions, the requirements for signal sampling devices are also diverse. Looking at the data signal sampling devices in the known technical field, there are common problems of single function, low level of intelligence, and poor reliability. Chinese patent, application number 98248745.2, application date 1998.11.27, titled "A Universal Data Acquisition Device" shows a new type of data acquisition device, which adopts VLSI design, high and low power consumption design , Reliable design and universal interface design, it has the characteristics of strong general performance, improved intelligence level, and reliable operation of the device. ...

Claims

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Application Information

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IPC IPC(8): G06F19/00
Inventor 张化光于锡纯冯健黎明柴泽峰
Owner NORTHEASTERN UNIV
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