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Data acquisition communication module

A communication module and data acquisition technology, applied in simulators, general control systems, instruments, etc., can solve the problems of high cost, limited number of interfaces, inconvenient long-distance expansion transmission, etc., to save space and money, use a huge space, and facilitate The effect of acquisition and processing

Inactive Publication Date: 2010-06-16
TIANJIN BAILI ELECTRIC CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Among them, the price of a single dedicated acquisition module suitable for PLC ranges from 3,000 to 4,000 yuan to as many as tens of thousands of yuan, and the number of interfaces is limited. The acquisition of analog quantities is not conducive to multi-channel expansion, and it is necessary to purchase a corresponding more expensive PLC as the main controller for combined use; the acquisition board suitable for industrial computer is also more expensive, and is generally plugged into the mainframe of the industrial computer Internal, not convenient for external long-distance expansion transmission

Method used

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Embodiment Construction

[0009] In order to further understand the content, characteristics and effects of the present invention, the following examples are given, and detailed descriptions are as follows in conjunction with the accompanying drawings:

[0010] Such as figure 1 As shown, the Atemga64 MCU has 64 pins, among which RA2~RA7, RC0~RC7, RG0, RG1, RG2, RD0, RD1, RD6 are connected to 20 input pins for isolation and collection of collection data through optocouplers, which are digital quantities Input I / O interface; RF0~RF7 are 8-way analog input A / D ports; RE0~RE7, RB0, RB1 conduct isolated collection of collection through optocoupler and connect with 10-way digital output I / O interface; XTAL1 , XTAL2 is connected to the external crystal oscillator input port; RD2, RD3, RD4 are communication interfaces connected to 485 communication chips to realize communication with the external 485; REST is connected to the external reset input pin; the external power input four-wire interface JP1 is connect...

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Abstract

The invention relates to a data acquisition communication module, which comprises an AVR singlechip and a 485 communication chip. RA2 to RA7, RC0 to RC7, RG0, RG1, RG2, RD0, RD1 and RD6 of the Atemga 64 singlechip are connected with the 20-path digital input I / O interface. RF0 to RF7 are connected with an 8-path analog input A / D port. RE0 to RE7, RB0 and RB1 are connected with a 10-path digital input I / O interface. XTAL1 and XTAL2 are connected with an external crystal oscillation input port. RD2, RD3 and RD4 are connected with the 485 communication chip. REST is connected with an external reset input pin. The data acquisition communication module breaks through the traditional acquisition means with single function and high price, and is applied to universal data acquisition communication modules of three kinds of intelligent controllers, such as singlechips, industrial personal computers, and PLCs. The acquisition and control of 38-path various signals can be realized by only occupying a 485 communication interface of an external device, so the space and capital are greatly saved. The data acquisition communication module can realize the multi-module intercommunication and multi-module data exchange, provides convenience for information acquisition and processing, and has enormous use space in the field of industrial control.

Description

technical field [0001] The invention belongs to a data acquisition communication module, in particular to a data acquisition communication module which can simultaneously acquire digital quantities and analog quantities and complete communication with an upper computer. Background technique [0002] Currently known in the field of industrial control, data acquisition is an important technical means, most of which are realized by PLC through special acquisition modules, or industrial control computers through acquisition boards, and special integrated internal circuits of single-chip microcomputers. Among them, the price of a single dedicated acquisition module suitable for PLC ranges from three to four thousand yuan to tens of thousands of yuan, and the number of interfaces is limited. The acquisition volume is either a single digital input acquisition, or a single output acquisition, or a single The acquisition of analog quantities is not conducive to multi-channel expansio...

Claims

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Application Information

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IPC IPC(8): G05B19/04G05B19/042G05B19/05
Inventor 吴永亮王铁镰陈军
Owner TIANJIN BAILI ELECTRIC CO LTD
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