Multi-dimensional localization of goods with an INTELLIgent READer supported by highly dynamic environment and process modelling (INTELLIREAD)

拟议的研究是IntelliRead(智能阅读器)研究项目的继续。该项目的目标是开发一个应用领域(业务流程)对象本地化系统，该系统使用智能超高频射频识别读取器以及有关应用环境的信息，以及正在观察的业务流程模型。智能阅读器在其阅读场中定位无源RFID应答器。为了提高定位结果，智能阅读器使用人工智能的方法将来自其读数的信息与关于应用环境的信息相结合。测量的对象位置和有关应用程序域的信息允许跟踪和了解业务流程中的事件，以及涉及的对象的状态。开发IntelliRead系统的第一步是从装卸拖拉机列车的参考场景中得出系统要求。除了这些要求外，系统对进一步操作场景的适应性也是一个目标。系统的适应性是系统遵守行业4.0[ACA-12]概念的主要属性之一。在定义了系统的体系结构后，开发了智能阅读器的组件。无源射频识别应答器的本地化需要开发基于天线阵列的硬件系统。该方法使用来自无源超高频RFID应答器的输入信号的到达方向(DOA)的估计方法来实现RFID应答器的定位。采用DOA作为参数(指纹)的位置指纹方法，提高了DOA定位的精度。此外，业务流程中事件的验证和确认过程需要有关应用程序环境的空间特征的信息以及有关参与的业务流程的信息。确定了适当的知识源，并将其纳入IntelliRead系统，使该系统意识到环境的空间方面与参与其中的进程之间的依赖关系。此外，该系统还分析有关被观测对象的基本运动模式及其意义的给定信息。研究项目的继续将使独立开发的部件能够集成到一个系统中，并在工业环境中对该系统进行评估。为了评估智能阅读器，使用了在IntelliRead项目过程中定义的参考场景。重点是在工业环境下对所提出的无源RFID定位系统进行评估，同时保持目标的精确位置和以适当的更新率识别业务流程事件。

The proposed research is a continuation of the IntelliRead (INTELLigent READer) research project. The goal of that project was the development of a system for localization of objects within an application domain (business process), using an intelligent UHF RFID reader as well as the information about the application environmentand the model of the business process under observation. The intelligent reader localizes passive RFID transponders in its read field. To improve the localization results, the intelligent reader combines the information from its readings and the information about the application environment using the methods of artificial intelligence. The measured object position and the information about the application domain,enables tracking and understanding of events within a business process, as well as the status of the objects involved. The first step for the development of the IntelliRead system was the elicitation of the system requirements from the reference scenarios of loading and offloading tugger trains. In addition to these requirements, the adaptability of the system to further operation scenarios is a target. The adaptability of a system is one of the main properties for systems adhering to the concepts of the Industry 4.0 [Aca-12]. After defining the architecture of the system, the components of the intelligentreader were developed. The localization of passive RFID transponders required a development of a hardware system based on an array of antennas. This approach enables RFID transponder localization using the estimation methods for the direction of arrival (DoA) of the incoming signal from the passive UHF RFID transponders. The precision of the localization using DoA methods is improved using the location fingerprinting method, where DoAs are used as parameters (fingerprints). Furthermore, the process of verification and validation of events in a business process requires information about the spatial characteristics of the application environment as well as the information about the business processes taking part. Appropriate knowledge sources were identified and integrated into the IntelliRead system, making the system aware of the dependencies between the spatial aspects of the environment and the processes taking part in them. Additionally, the system analyzes given information about the basic movement patterns of the observed objects and their meaning. The continuation of the research project will enable the integration of independently developed components in one system, and the evaluation of the system in an industrialenvironment. To evaluate the intelligent reader the reference scenarios defined during the course of the IntelliRead project are used. The focus lies on the evaluation of the proposed passive RFID localization system under conditions of an industrial environmentwhile maintaining the precise position of the object and the recognition of business process events with a suitable update rate.