High-speed real time data sampling device

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 a data sampling device, in particular to a data sampling device used for the monitoring of pipelines and containers of various liquids, gases and fluid media in the production process, and environmental 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. But...

AI Technical Summary

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 transmitted by data sampling devices in different regions are sampled at the same time

In this way, the application site must also be equipped with various data sampling devices and additional equipment with different functions, which not only requires huge investment and difficult maintenance, but also has poor versatility and low cost performance

[0005] 3) The communication ability is not strong

Since the single-chip microcomputer uses a serial interface to realize data remote transmission through communication transmission equipment, it is difficult to ensure high-speed real-time data transmission, and it is even more difficult to realize network communication

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