Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Fire early warning method based on logarithmic inverse time limit principle

A technology of fire early warning and inverse time limit, which is applied in electric fire alarms, protections that respond to overcurrents, parts of emergency protection devices, etc. Problems such as cumbersome communication and connection of the device can be achieved to improve economy and practicability, solve the difficulty of obtaining electricity, and improve rationality and accuracy

Pending Publication Date: 2022-03-18
江苏业力科技有限公司
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a fire early warning method based on the principle of logarithmic inverse time limit, which is used to solve the problem of inconvenient installation of temperature probes and probes on site, as well as the cumbersome problem of communication connections between multi-channel probes and devices

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
  • Fire early warning method based on logarithmic inverse time limit principle
  • Fire early warning method based on logarithmic inverse time limit principle
  • Fire early warning method based on logarithmic inverse time limit principle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0046] The technical solution of the invention will be further described below in conjunction with the accompanying drawings.

[0047] figure 2 A schematic diagram of the device of an embodiment of the present invention is given, combined with figure 1 The flow chart to illustrate, the steps are as follows:

[0048] 1) The device self-checks when it is powered on, and detects the sampling circuit, ambient temperature circuit, and output circuit, and alarms and locks the output when an abnormality occurs.

[0049] 2) The device collects voltage and current data at 1600 points per second at a constant sampling frequency, and collects ambient temperature data at 1 point per second, and the sampling points are stored in the corresponding sampling point queue;

[0050] 3) Calculate the effective value of the three-phase voltage through the full-wave Fourier algorithm (the effective value of the A-phase voltage Ua, the effective value of the B-phase voltage Ub, and the effective ...

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 fire early warning method based on the logarithmic inverse time limit principle, and the method comprises the steps: collecting the load current of an operation line through the environment operation state and the parameters of a power supply cable; the real-time temperature rise of the current power supply cable is estimated, the current cable temperature is estimated according to the environment temperature, and when the temperature is higher than the safe operation level, a fire early warning prompt is given; and performing a thermal accumulation process on the real-time load current by applying a logarithmic discretization inverse time limit algorithm, tripping and starting a thermal reset timing process when the running limit of cable heating is reached, and forbidding the line to be switched on and put into operation before thermal reset zero clearing in the thermal accumulation process. According to the method, the temperature and the heat accumulation time of the running line cable can be quickly estimated and judged without depending on an external cable temperature sensor, the running safety of the power cable is guaranteed, fire accidents caused by cable overheating are avoided, and the life and property safety of people is guaranteed.

Description

technical field [0001] The invention relates to a fire early warning method based on the logarithmic inverse time limit principle, and belongs to the technical field of distribution network protection. Background technique [0002] In recent years, frequent fire accidents caused by improper use of electricity and electrical failures have brought serious harm to the lives and property of the people. In order to curb the probability of electrical fires, the government is currently organizing a three-year nationwide The comprehensive treatment of electrical fires aims to achieve a significant improvement in the quality of electrical products, a significant improvement in the quality of electrical design and construction of construction projects, a significant improvement in the safety level of electrical use and maintenance in social units, and a significant reduction in electrical fire accidents across the country. Electrical fire monitoring devices generally provide fire warn...

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): G08B17/06H02H1/00H02H3/08H02H5/04
CPCG08B17/06H02H1/0007H02H5/04H02H3/08
Inventor 梁峻刘权王进韩敬敏柯炜
Owner 江苏业力科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com