数字双胞胎是建筑物或自然环境中物理资产，过程或系统的现实且动态的数字表示。

As was the case with BIM nearly 20 years ago, digital twins are now reshaping the built world in terms of how infrastructure is designed, constructed, and operated. The industry has always faced challenges managing the volume and variety of data, as well as the varied ways it changes over time. This can be overwhelming for infrastructure professionals, whether their specialty is in project delivery or in operations. The advent of digital twins has helped the industry advance existing BIM-centric processes by improving data quality and accessibility. Importantly, infrastructure digital twins can be achieved “in place,” without having to disrupt or replace existing workflows or systems.

不管infrastructure type, over time the digital twin of an asset or a project will become both its lifeblood and its central nervous system. That is—it’s going to be really valuable. We believe that to achieve sustainable infrastructure digital twins, it is imperative that you build your systems around open-source technology so the keys to your destiny remain in your hands. You are not going to “buy” your digital twins from a single vendor. Instead, you’re going to assemble, build, customize, and evolve your twin with pieces from many sources, the mix of which will change over time. Every vendor you deal with will tell you how “open” they are. Only those who are open sourced—meaning you can use your digital twin and the source code that powers it without a fee—really mean it.

Building the Foundation for iTwin.js

当我们在Bentley Systems宣布ITWIN.JS时，我们描述了它建立的基础是对资本项目和基础设施资产的最开放，生产力，直观和强大的开发环境。18luck官网这iTwin.js library是综合的JavaScript软件包集合，建立在现代云和Web开发的最开放，流行和灵活的标准上。尽管可以从任何编程语言中使用，但它是用打字稿编写的（到目前为止我最喜欢的编程环境），并利用开放技术（包括sqlite，node.js，npm，npm，webgl，webgl，electron，docker，docker，docker，kubernetes和html5）和CSS。相同的代码库可以生产云服务以及Web，移动和桌面应用程序。源代码托管在GitHub上，并根据MIT许可证分发。

By leveraging these open technologies, we have created the Bentley iTwin platform that is relevant for many different use cases. Our platform handles some important and difficult tasks such as persistence, visualization, scalability, security, and interoperability. Of course, your digital twins will have different mixes of data sources and features depending on the type of asset. The goal of an open platform is to allow anyone working on one aspect to easily combine their efforts with people working on other aspects. That means the whole thing doesn’t need to be written all at once and from one vendor. An open platform helps us to combine everything we use with little effort. A good infrastructure digital twin platform should do the same.

通过在开源技术上构建平台，您可以为用户提供更改它的能力。他们可以复制程序源并访问其数据而无需支付许可证。开源战略在其他行业中运作良好，但在工程，BIM或CAD中尚未完全采用。原因是没有足够有意义的平台开放，以使人们能够在其上分层，甚至使竞争对手能够创建与之合作的解决方案。

To create an infrastructure digital twin (we call it an “iTwin”), we fuse together many types of data sources. One source is what we call “digital context"—observations sampled or surveyed in the past. Another source is “real time” or current data, such as IoT sensors, control systems, ERP systems, and emergency response systems. The data source that makes infrastructure digital twins most challenging is engineering and/or BIM data, because they often represent some future state of the twin. The concept of “future state” is a challenging computer science problem because it is nonlinear (i.e. there can be multiple valid states extant simultaneously). That’s the main reason infrastructure digital twins have never existed heretofore. Obviously all three data sources, past, present, and future, change continuously but with different granularity.

不netheless, if you could fuse all those data types, it’s clear that infrastructure digital twins will provide the basis for new applications to improve asset performance, including sustainability, productivity, occupancy, energy, safety, and maintenance. The questions are then: “How do you structure the data?;” “What transaction model?;” “How to visualize past/current/future in a single window?;” and “How do you make the system secure?” The answers will vary for each data type. If every organization working on just one part of a digital would has to solve all those problems on their own, they’d never finish, and nothing would work together.

与所有计算机科学问题一样，答案是在提供零件实施的全面但可扩展的平台之上。为了使该平台在技术和经济上可行，我认为它必须是由利润动机组织赞助的开源项目。我从本特利（Bentley）提供iTwin.js作为该平台。如果您觉得自己宁愿有所不同的部分工作，则可以通过分叉我们的代码来更改，或者希望通过在Github上向我们的存储库生成拉的请求。这样，生态系统就会加强自身。

莫特麦克唐纳、全球工程、管理、and development firm uses the iTwin platform to improve the accessibility and understanding of engineering data. Data from different sources can be connected in a single repository. It allows data previously locked in model files to be accessed in a database-like form. This is a major breakthrough that enables quick and easy access to finely granulated asset data. Using the iTwin.js, Mott MacDonald developers have been able to connect this data source to downstream tools to efficiently re-use and interrogate this data. The iTwin platform has empowered Mott MacDonald to maintain a software agnostic approach while gaining far greater insights from the data.

Empowering People to Do More

People use the Bentley iTwin platform to solve problems that have nothing to do with Bentley Systems. We believe that as our platform is leveraged by third parties in creative ways, then we will be relevant when they succeed. We are fostering an ecosystem of innovation that will grow around a common set of source codes and data types that can be defined with open-source tools that are built on open standards.

在Bentley Systems，我们对这一潜力感到兴奋，但我们并不渴望成为“基础设施数字双胞胎公司”，因为很明显，需要数百家此类公司。取而代之的是，我们打算成为在创新生态系统中与利用该平台一起在创新生态系统中工作的“基础架构数字双平台公司”。我们认为这将创造一个世界，在这个世界中，基础设施数字双胞胎确实可以改善地球上每个人的生活质量。