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Method and apparatus for analyzing hazard of elevator control software, and computer readable recording medium

a technology of elevator control software and hazard analysis, applied in the direction of program control, fault response, instruments, etc., can solve the problems of significant social and economic losses, passenger anxiety, and inability to analyze hazard, so as to increase the accuracy and completion of the hazard analysis

Inactive Publication Date: 2018-04-19
SANGMYUNG UNIV SEOUL IND ACAD COOP FOUND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present patent provides a method for analyzing hazards to ensure complete detection and minimize omission. This method involves compensating for the conventional and incomplete STPA and adding the task analysis and specification method using CTT before detecting the hazard. Compared to traditional STPA, this method increases accuracy and completeness of the hazard analysis.

Problems solved by technology

When the elevator is stopped due to a failure, the passenger in the elevator feels uneasy, and the passenger with anxiety may take dangerous actions such as forcibly opening the door.
Ensuring safety is important because minor software faults can cause significant social and economic losses, and even life damage.

Method used

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  • Method and apparatus for analyzing hazard of elevator control software, and computer readable recording medium
  • Method and apparatus for analyzing hazard of elevator control software, and computer readable recording medium
  • Method and apparatus for analyzing hazard of elevator control software, and computer readable recording medium

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Embodiment Construction

[0033]The present disclosure now will be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments of the present disclosure are shown. The present disclosure may, however, be embodied in many different forms and should not be construed as limited to the exemplary embodiments set forth herein.

[0034]Rather, these exemplary embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the present subject matter to those skilled in the art. Like reference numerals refer to like elements throughout.

[0035]It will be understood that, although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or section from another region, layer or s...

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PUM

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Abstract

A method of analyzing a hazard of a software control system which is operated by a computer and based on STPA (System Theoretic Process Analysis) is provided. The method includes determining an attribute and function demands of the system, analyzing tasks of the system based on the determined attribute and the function demands, generating specification of a relation between the tasks using CTT (Concur Task Tree) method, the CTT method representing a hierarchical relation of a control flow between the tasks, determining at least one of the hazard of the system based on the specification and generating a safety constraint of the system based on the determined hazard. The determining at least one of the hazard of the system uses a guide word mapping table of CTT based STPA.

Description

CROSS-REFERENCE TO RELATED APPLICATION(S)[0001]This application is a continuation application of PCT / KR2016 / 012579 filed on Nov. 3, 2016, which claims priority to Korean Patent Application No. 10-2016-0135790 filed on Oct. 19, 2016, the contents of which are herein incorporated by reference in their entireties.BACKGROUND1. Field[0002]Exemplary embodiments of the present disclosure relate to a method and apparatus for analyzing hazard of the elevator control software system.2. Description of the Related Art[0003]The elevator is an apparatus installed in a high-rise building such as an apartment or a building and can easily pass through each floor. A passenger boarded inside the elevator selects an object floor to be moved using an operation panel installed on one side of the elevator.[0004]The elevator operates through the control software. When the elevator is stopped due to a failure, the passenger in the elevator feels uneasy, and the passenger with anxiety may take dangerous acti...

Claims

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Application Information

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IPC IPC(8): G06F11/36G06F9/45G06F9/44
CPCG06F11/3608G06F8/10G06F8/75G06F8/433G06F11/0796
Inventor HAN, HYUK SOOKIM, EUNBI
Owner SANGMYUNG UNIV SEOUL IND ACAD COOP FOUND
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