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Modularized IO system based on ARM technology

A modular and technical technology, applied in the field of IO system, can solve the problems of slow refresh speed of modular IO system and difficult to meet real-time requirements, and achieve the goal of improving system data processing capability, real-time transmission capability, and data refresh speed. Effect

Inactive Publication Date: 2018-05-04
四川零点自动化系统有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to: provide a modular IO system based on ARM technology, solve the problem that the refresh speed of the modular IO system is slow and it is difficult to meet the real-time requirements

Method used

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  • Modularized IO system based on ARM technology
  • Modularized IO system based on ARM technology
  • Modularized IO system based on ARM technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Such as figure 1 As shown, a modular IO system based on ARM technology is characterized in that: it includes a main communication module and 4 IO sub-modules, and the 4 IO sub-modules 1, IO sub-module 2, IO sub-module 3, IO sub-module Module 4 is respectively connected with the main communication module.

[0033] The system input process:

[0034] (1) The IO sub-module performs on-site data sampling;

[0035] (2) Filter and convert the sampled data;

[0036] (3) Send the converted data to the main communication module;

[0037] (4) The main communication module transmits the collected data information through the field bus interface.

[0038] The system output process:

[0039] (1) The main communication module reads the output data through the field bus;

[0040] (2) Perform output logic processing on the output data;

[0041] (3) The output data is sent to the IO sub-module;

[0042] (4) The IO sub-module state machine judges the data;

[0043] (5) The output...

Embodiment 2

[0046] Such as figure 2 As shown, on the basis of Embodiment 1, the IO submodule includes:

[0047] Crystal oscillator and reset circuit: provide basic clock signal;

[0048] Power supply circuit: provide power for the IO sub-module;

[0049] Input acquisition circuit: collect on-site signals and convert the output to the application processor;

[0050] Application processor: as the central processing circuit, data transmission with other circuits of the module;

[0051] Output drive circuit: used to amplify the output signal to drive field devices;

[0052] Internal bus interface: exchange data with the main communication module;

[0053] LED driver module: used to indicate on-site input and output conditions as well as maintenance and debugging conditions.

[0054] The IO subsystem input process:

[0055] (1) The input acquisition circuit converts the field signal;

[0056] (2) The application processor reads the conversion result;

[0057] (3) LED input indication ...

Embodiment 3

[0065] Such as image 3 As shown, on the basis of Embodiment 1, the main communication module includes:

[0066] Crystal oscillator and reset circuit: provide basic clock signal;

[0067] Power circuit: provide power for the main communication module;

[0068] Communication processor: exchange data with the control system through the communication unit;

[0069] Application processor: exchange data with communication processor through 16-bit parallel bus;

[0070] Internal bus interface: perform data exchange between the application processor and the IO sub-module.

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Abstract

The invention discloses a modularized IO system based on an ARM technology. The modularized IO system comprises a main communication module and four IO sub-modules. The four IO sub-modules are connected with the main communication module. In the scheme, by connecting the main communication module with the four IO sub-modules and conducting communication between the main communication module and the IO sub-modules through a plurality of site busses of a communication unit or a real-time Ethernet interface, the integrity of IO subsystems is improved; data processing is conducted by means of an ARM series processor, the requirements for collecting, transmitting and processing signals of the IO subsystems can be met, system data processing capacity is improved, and real-time transmitting capacity is improved.

Description

technical field [0001] The invention relates to the field of IO systems, in particular to a modular IO system based on ARM technology. Background technique [0002] The modular IO system is an automated on-site input and output device. As the underlying device of automatic control, the modular IO system is widely used in industries such as industrial automation, power systems, rail transit, and wind power generation. The on-site switches, Temperature, pressure, flow, speed information, and then transmit the information to PLC, SCADA, DCS and other control systems through field bus or real-time Ethernet, and at the same time output the signal output by the control system to relays, solenoid valves, switches, etc. through IO modules. Field devices such as indicator lights and drives are used for operation and control, but the existing IO system has low integration, poor performance, and slow data refresh rate, which is difficult to meet real-time input and output requirements....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/042
Inventor 王永贵廖亮郭静
Owner 四川零点自动化系统有限公司