ISO/IEC 24730-2:2006 信息技术 实时定位系统（RTLS） 第2部分：2.4GHz空中接口协议

标准编号：ISO/IEC 24730-2:2006

中文名称：信息技术 实时定位系统（RTLS） 第2部分：2.4GHz空中接口协议

英文名称：Information technology — Real-time locating systems (RTLS) — Part 2: 2,4 GHz air interface protocol

发布日期：2006-12

标准范围

ISO/IEC 24730定义了用于资产管理的实时定位系统（RTLS）的两种空中接口协议和单个应用程序接口（API），旨在允许兼容性并鼓励不断增长的RTLS市场的产品互操作性。ISO/IEC 24730-2:20 06，2.4 GHz空中接口协议，为实时定位系统建立了技术标准，该系统在国际上可用的2.4 GHz频带上操作，并且旨在通过频繁更新(例如，一分钟几次)来提供近似位置。为了符合本标准，需要符合ISO/IEC 24730-2:20 06和ISO/IEC 24730-1。实时定位系统是能够在实时或接近实时的时间点在定义的空间(本地/校园、广域/区域、全球)中的任何地方定位物品的位置的无线系统。通过测量无线电链路的物理特性来导出位置。ISO/IEC 24730-2:20 06规定了在受控区域（如仓库、校园、机场（感兴趣区域有仪器）中定位资产的系统的空中接口，精度为3米。还有另外两种定位对象的方法，它们实际上是RFID而不是RTL:借助于资产在某个时间已经通过点A而没有通过点B的事实来定位资产。借助于提供寻的信标来定位资产，由此手持设备的人可以找到资产。定位的方法是通过识别和定位，一般是通过多侧定位。不同的类型是飞行时间测距系统、振幅三角测量、到达时间差（TDOA）、到达角。ISO/IEC 24730-2:20 06定义了创建RTLS系统所需的空中接口协议。可以使用许多类型的定位算法。附录A中给出了定位算法的示例。ISO/IEC 24730-2:20 06定义了提供X-Y坐标和数据遥测的网络定位系统。该系统利用自主生成直接序列扩频射频信标的RTLS发射机。这些设备可以是现场可编程的，并且支持允许修改位置更新速率和RTLS设备的位置的可选激励器模式。ISO/IEC 24730也定义了这些模式，但没有定义实现它们的手段。

ISO/IEC 24730 defines two air interface protocols and a single application program interface (API) for real-time locating systems (RTLS) for use in asset management and is intended to allow for compatibility and to encourage interoperability of products for the growing RTLS market.ISO/IEC 24730-2:2006, the 2,4 GHz air interface protocol, establishes a technical standard for real-time locating systems that operate at an internationally available 2,4 GHz frequency band and that are intended to provide approximate location with frequent updates (for example, several times a minute). In order to be compliant with this standard, compliance with ISO/IEC 24730-2:2006 and ISO/IEC 24730-1 is required.Real time locating systems are wireless systems with the ability to locate the position of an item anywhere in a defined space (local/campus, wide area/regional, global) at a point in time that is, or is close to, real time. Position is derived by measurements of the physical properties of the radio link.ISO/IEC 24730-2:2006 specifies the air interface for a system that locates an asset in a controlled area, e.g. warehouse, campus, airport (area of interest is instrumented) - accuracy to 3 m.There are a further two methods of locating an object which are really RFID rather than RTLS:

• Locating an asset by virtue of the fact that the asset has passed point A at a certain time and has not passed point B.
• Locating an asset by virtue of providing a homing beacon whereby a person with a handheld can find an asset.

The method of location is through identification and location, generally through multi-lateration. The different types are

• Time of Flight Ranging Systems,
• Amplitude Triangulation,
• Time Difference of Arrival (TDOA),
• Angle of Arrival.

ISO/IEC 24730-2:2006 defines the air interface protocol needed for the creation of an RTLS system. There are many types of location algorithms that could be used. An example of a location algorithm is given in Annex A.ISO/IEC 24730-2:2006 defines a networked location system that provides X-Y coordinates and data telemetry. The system utilizes RTLS transmitters that autonomously generate a direct-sequence spread spectrum radio frequency beacon. These devices may be field programmable and support an optional exciter mode that allows modification of the rate of location update and location of the RTLS device. ISO/IEC 24730 also defines these modes, but does not define the means by which they are accomplished.

标准预览图