Double CPU protection information shared system and information processing method based on double port RAM

A technology for protecting information and sharing systems, applied in the field of hardware systems, can solve problems such as large space occupied by computing programs, less program space, and device inheritance limitations, so as to reduce research and development costs and production costs, smooth the development process, and shorten the development cycle Effect

Active Publication Date: 2008-08-13
NANJING GUODIAN NANZI POWER GRID AUTOMATION
View PDF0 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The main frequency of the control system of the original protection device is low, and the program space is small, which is increasingly unable to meet the requirements of the current protection device.
At present, the control system of the protective device mostly adopts a single CPU system with high frequency and complex operation. All control calculation functions are completed by one CPU. For different or higher hardware requirements, it is necessary to replace all the control systems when

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
  • Double CPU protection information shared system and information processing method based on double port RAM
  • Double CPU protection information shared system and information processing method based on double port RAM
  • Double CPU protection information shared system and information processing method based on double port RAM

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0021] Example 1

[0022] When the dual-CPU protection information sharing system based on dual-port RAM in this embodiment is used in a situation where real-time requirements for protection information are very high and reliability requirements are not high, the specific working process is shown in FIG. 3 . The information providing system (such as the system CPUA) stores the protection information group Z in the dual-port RAM chip U in real time during the 600Hz or 1200Hz periodic interruption; the information using system (such as the system CPUB) uses any protection information in the protection information group Z When X is on, the information will be read from the dual-port RAM chip U, and the algorithm with strong anti-interference ability will be used for protection calculation, which satisfies the information sharing between the two CPUs and ensures the real-time performance of the information. .

Example Embodiment

[0023] Example 2

[0024] This embodiment is a technical solution formed by further analysis and changes on the basis of Embodiment 1, and is used for situations where the real-time performance and reliability requirements of the protection information group are very high, and the specific working process is shown in FIG. 4 . The system CPUA stores the protection information group Z in the dual-port RAM chip U in real time during the 600Hz or 1200Hz periodic interruption, and redundantly stores the protection information group three times in the adjacent area of ​​the dual-port RAM chip; the system CPUB is using the protection information group. When any protection information X in the information group Z is used, the protection calculation is performed using the result obtained after the protection information X and the corresponding three redundant information are "ANDed", so as to ensure that the protection information X is incorrect and the information will not cause system...

Example Embodiment

[0026] Example 3

[0027]This embodiment is a technical solution formed by further changes on the basis of the above embodiments, and is used to protect the situation where the real-time performance of information is not high and the reliability is very important. The specific working process is shown in FIG. 5 . When the system starts or the protection information is modified, the system CPUA stores the protection information group Z in the dual-port RAM chip U, and stores its inverse code and XOR code in an adjacent area. When the system CPUB uses any protection information X in the protection information group Z, it checks the inverse code and XOR code of the protection information X. If the check is correct, it will continue to run. If the check is incorrect, the system CPUB will The use of the protection information X is automatically stopped, and the reliability flag F is set to inform the system CPUA. The system CPUA uses two methods to check the reliability of the pro...

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 present invention provides a double CPU conservation information sharing system and information processing method based on double-port RAM, the characteristics of the sharing system is that the system includes two CPU system of system CPUA and CPUB, a double-port RAM chip, two CPU system, connecting to the ends of double-port RAM chip respectively, relay protection operation distributed in two CPU system of CPUA and CPUB, each CPU system completing different part of the operation, double-port RAM chip sharing alternating protection information of two CPU system. The invention checks the protection information, meeting requirement of the high operational capability and speed, ensuring information credibility and real-time. The system combines the high performance, credibility and easy updating of the protection device accompanied by design principle of high performance and lower hardware requirement, reducing cost of equipment, research.

Description

technical field [0001] The invention relates to a hardware system and an information processing method for realizing safe real-time sharing of protection information between two CPU systems through a dual-port RAM chip in a protection device. Background technique [0002] As the integration of relay protection devices in the power system becomes higher and higher, a single protection device undertakes more and more protection functions, and the calculation and control tasks undertaken by the control system in the device become heavier and heavier, which requires the device to provide computing speed Fast, powerful CPU system to meet this requirement. [0003] The main frequency of the control system of the original protection device is low, and the program space is small, which is increasingly unable to meet the requirements of the current protection device. At present, the control system of the protective device mostly adopts a single CPU system with high frequency and com...

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
IPC IPC(8): G06F15/76G06F13/00
Inventor 包明磊丁俊健
Owner NANJING GUODIAN NANZI POWER GRID AUTOMATION
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap