Unlock instant, AI-driven research and patent intelligence for your innovation.

Sampler for data of network of distributed control system

A technology of decentralized control system and network data, applied in the direction of comprehensive factory control, comprehensive factory control, electrical program control, etc., can solve problems such as reducing system efficiency and performance, increasing CPU workload, etc., to improve efficiency and reduce interrupt triggering time, without occupying the effect of network bandwidth

Active Publication Date: 2012-01-11
四川省电力工业调整试验所 +1
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing sampler usually sends data packets from the network card memory to the system memory through the CPU, which increases the workload of the CPU; secondly, the existing sampler reads data in an interrupted manner, and at the same time, the data received by its network card The package is in the kernel space and needs to be copied to the user space before the user space application can obtain the data, thus reducing the efficiency and performance of the system

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Sampler for data of network of distributed control system
  • Sampler for data of network of distributed control system
  • Sampler for data of network of distributed control system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] see figure 1 , hardware resource:

[0026] Processor: I.MX27Arm9 processor from Freecale;

[0027] 64M SDRAM;

[0028] 32M Nor Flash;

[0029] 128M NAND Flash;

[0030] Real Time Clock;

[0031] Two USB Hi-speed HOST interfaces and one USB OTG interface;

[0032] 100M Ethernet interface;

[0033] serial interface;

[0034] EEPROM interface (for future system function expansion);

[0035] 16 GPIO interfaces (used for future expansion of system functions);

[0036] The 8x8 keyboard interface (used for the expansion of system functions in the future) is drawn out.

[0037] Hardware resource description

[0038] 1. Freescale's I.MX27 microprocessor

[0039] The i.MX27 is an ARM926EJ-S-based System-on-Chip that opens new avenues for the development of next-generation consumer and industrial electronics. The high-speed performance of the 400-MHz I.MX27 processor and a wide range of peripheral interfaces make it ideal for a variety of high-volume production product...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a sampler for the data of a network of a distributed control system. System hardware is mainly formed by connecting a synchronous data direct transmission controller, a Flash memory, a synchronous dynamic random access memory, an Ethernet receiver and a read-only memory with a micro computer processor by a bus. System software mainly comprises a data packet processing module, an interrupt wake-up data receiving module and a memory zero copy module. After being received from a network card, the data packets are transmitted to a system memory from the network card memory; and a DMA mode is adopted and the participation of a CPU is avoided. Meanwhile, data is received in an interrupt wake-up mode and polled in a Doll mode, so the efficiency of the reception of short packets is improved, the data packet memory copy is saved and system efficiency is improved.

Description

technical field [0001] The invention relates to a network data collector, in particular to a microcomputer control instrument which is used for data collection of a power plant DCS network (industrial Ethernet) and adopts an online passive monitoring mode. Background technique [0002] Data collection is carried out on the DCS network (industrial Ethernet) of the power plant through the sampling instrument, which is helpful for dynamic and real-time supervision of the production of the power plant, and is conducive to the safe and normal production. However, the existing sampler usually sends data packets from the network card memory to the system memory through the CPU, which increases the workload of the CPU; secondly, the existing sampler reads data in an interrupted manner, and at the same time, the data received by its network card The package is in the kernel space and needs to be copied to the user space before the user space application can obtain the data, which red...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/418
CPCY02P90/02
Inventor 阎松汤明俊
Owner 四川省电力工业调整试验所