Functional safety assessment for a 3D safety sensing system

3D 安全传感系统的功能安全评估

• 批准号: 452561-2013
• 负责人: Lu, Lixuan
• 金额: $ 1.82万
• 依托单位: University of Ontario Institute of Technology
• 依托单位国家: 加拿大
• 项目类别: Engage Grants Program
• 财政年份: 2013
• 资助国家: 加拿大
• 起止时间: 2013-01-01 至 2014-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=540975
• 关键词: Functional; safety; assessment; 3D; sensing

This NSERC Engage project aims to perform a functional safety assessment for a 3D safety sensing system, which his designed and is currently under test by S.A.F.E. Engineering Inc. for three-dimensional zone monitoring. This system is used to safeguard personnel in the vicinity of moving machinery. Whenever a monitored volume is violated, the system will shut down the operating machinery within that volume, so as to prevent human injury. Existing commercial products only function at the two-dimensional level and S.A.F.E. Engineering Inc. is believed to be the pioneer company investigating the 3D safety technology. In order for this product to attract more customers, the quantitative reliability level of this product needs to be determined. This presents a challenge to S.A.F.E. Engineering Inc. since the 3D safety system integrates both hardware and software, and there is no consensus on appropriate methods to evaluate reliability for hardware-software integrated systems. The applicant proposes an enhanced input domain-based model that is to be used to capture the specific characteristics presented by software-hardware integrated systems such as event dependency and timing sequence. Furthermore, Bayesian stopping rules are going to be used to determine what confidence level of probability of failure on demand will be acceptable. To carry out this research, the project is divided into four stages. The first month is used to familiarize the researchers with the 3D safety monitoring system through observing the operating process and consulting S.A.F.E. Engineering Inc. personnel. The goal at the end of this stage is to identify the key components that need to be captured by the enhanced input domain-based model. The second stage will be on the design of the enhanced input domain-based model. This is expected to last for two months, after which the Bayesian stopping rules will be investigated to provide statistical evidence to support the reliability of the integrated system by testing consecutive demands without failure. The last stage will be on report writing. The proposed functional safety assessment is expected to not only bring economic benefits to S.A.F.E. Engineering Inc., but also to bring safety benefits for Canadians.

NSERC Engage项目旨在对3D安全传感系统进行功能安全评估，该系统由S.A.F.E.Engineering Inc.设计，目前正在进行三维区域监控测试。该系统用于保护移动机械附近的人员。当监测到的体积被违反时，系统会关闭该体积内的操作机械，以防止人员受伤。现有的商业产品只能在二维水平上工作，S.A.F.E.Engineering Inc.被认为是研究3D安全技术的先驱公司。为了让这款产品吸引更多的客户，需要确定该产品的定量可靠性水平。这给S.A.F.E.Engineering Inc.带来了挑战，因为3D安全系统集成了硬件和软件，对于硬件-软件集成系统的可靠性评估的适当方法还没有达成共识。申请人提出了一种增强的基于输入域的模型，该模型将被用来捕获由软硬件集成系统呈现的特定特征，诸如事件相关性和时序。此外，贝叶斯停止规则将被用来确定按需失败概率的置信度将是可接受的。为了开展这项研究，该项目分为四个阶段。第一个月用于通过观察操作过程和咨询S.A.F.E.Engineering Inc.人员来熟悉3D安全监控系统。此阶段结束时的目标是确定需要由增强的基于输入域的模型捕获的关键组件。第二阶段将是改进的基于输入域的模型的设计。预计这将持续两个月，之后将调查贝叶斯停止规则，以提供统计证据，通过测试连续的需求而不失败，支持集成系统的可靠性。最后一个阶段是写报告。拟议的功能安全评估预计不仅会给S.A.F.E.Engineering Inc.带来经济利益，也会给加拿大人带来安全利益。