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An io module that multiplexes ai channel and di channel

A channel and channel data technology, applied in general control systems, comprehensive factory control, instruments, etc., can solve the problems of IO modules that cannot be replaced with each other, inconvenient maintenance, high system cost, etc., to reduce the cost of construction and maintenance management, increase flexibility performance and enhanced maintainability

Active Publication Date: 2020-11-27
HANGZHOU HOLLYSYS AUTOMATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of this application is to provide an IO module for multiplexing AI channels and DI channels in a DCS system to solve the problem of high system cost and inconvenient maintenance because IO modules of different channel types cannot replace each other

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  • An io module that multiplexes ai channel and di channel
  • An io module that multiplexes ai channel and di channel
  • An io module that multiplexes ai channel and di channel

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Embodiment Construction

[0028] In order to enable those skilled in the art to better understand the solution of the present application, the present application will be further described in detail below in conjunction with the drawings and specific implementation methods. Apparently, the described embodiments are only some of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0029] In the DCS system, the IO module is often used as the most basic input and output channel of the DCS system. In the actual application process, the DCS system collects field device signals through the input IO module, uploads the collected data to the DCS main controller for IEC calculation, and finally outputs control signals through the output IO module to participate in on-site industrial production control.

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Abstract

The application discloses an IO module for multiplexing an AI channel and a DI channel. When a signal input terminal inputs an analog current signal or a digital voltage signal, an ADC chip can collect a voltage signal on a sampling resistor and carries out quantitative coding on the voltage signal to obtain a digital code; a control chip determines that the current channel input signal type is AIor DI according to a code value range in which the digital code falls, generates a corresponding channel data frame and transmits the channel data frame to a DCS main controller. Therefore, the AI channel and the DI channel are integrated into the input type IO module, and analog quantity current signals and digital quantity voltage signals can be accessed into the IO module, so that the flexibility of system hardware configuration is improved, the maintainability of the system is enhanced, and the system building cost and the maintenance and management cost are reduced. In addition, the aplication further provides a DCS system, and the technical effect of the DCS system corresponds to the technical effect of the IO module.

Description

technical field [0001] The present application relates to the technical field of digital circuits, in particular to an IO module and DCS system that multiplex AI channels and DI channels. Background technique [0002] At present, the IO channels of the DCS system (Distributed Control System, distributed control system) are connected to the system in the form of IO modules. An IO module is generally composed of 8 or 16 IO channels of the same type, such as AI (Analog Input, analog Input) channel, DI (Digtial Input, digital input) channel, AO (Analog Out, analog output) channel, DO (Digtial Out, digital output). Since IO modules of different channel types cannot replace each other, as the scale of the DCS system becomes larger and larger, the system accommodates more and more IO channels, and the number of IO modules required is also increasing, resulting in higher system costs. And it is not convenient for the formation of DCS system or the maintenance and management of DCS ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/418
CPCG05B19/4188Y02P90/02
Inventor 王宾
Owner HANGZHOU HOLLYSYS AUTOMATION