The项目唯一标识（IUID）程序，也称为唯一标识（UID），由美国国防部（国防部）简化政府站点，供应商和承包商之间敏感设备的管理。该程序由重要准则定义labeled with a unique identifier以及每个公司应如何管理特定要求。
这篇文章将确切地说明您在购买IUID标签以标记您的设备和其他资产之前应了解的内容。我们将查看IUID程序的基本要求，包括每个资产标签中必须包含的唯一标识信息（UII）。还包括说明如何选择适当的IUID标签的其他信息，以帮助您评估合适的组件。
了解哪些资产需要IUID
The U.S. DoD defines the details of the IUID program in the documentMIL-STD-130N, titled Department of Defense Standard Practice Identification Marking of U.S. Military Property. These instructions include over 50 pages of information including the scope of the program. An IUID marking is required forany item that meets the following criteria:
- An item with an acquisition cost greater than $5,000
- 被认为是任务必不可少或受控的项目
- An item that will be serially managed by the DoD
- 出于其他原因需要永久识别的项目
The use of IUID tags adds additional costs for suppliers and other entities involved in the supply chain for these assets. For this reason, it’s important to clarify if the markings are required or if other traditional tracking formats are acceptable. Overmarking assets can hurt profits, while failing to mark required assets can lead to regulatory fines and other penalties.
Understand Your Application Requirements
The选择合适的IUID标签should be determined based on the specific requirements for each application. Several factors such as the equipment surface and environmental conditions could impact the selection of label material type and design format. We’ve broken down the IUID label buying process into three stages: material selection, design formatting, and tagging. According to the requirements, each tag must remain readable for the lifetime of the asset to which it’s attached.
Material Selection
The material for the IUID label should be chosen based on the expected environmental conditions. Some common examples include exposure to sunlight, dust, rain, saltwater, and corrosive materials. Creating a full list of potential contaminants will help determine whichlabel material is most compatible. Some of the most common IUID label materials are:
- 聚酯纤维通常是用于将大部分时间在室内花费大部分时间的计算机系统之类的资产选择。这种塑料的成本通常较低，但是它不如其他许多选择那么耐用。
- Polycarbonate标签是化学分配应用和重型设备标记的绝佳选择。塑料底物非常适合化学暴露，并且可以暴露于广泛的温度水平。
- MetalPhoto®阳极氧化铝has a strong anodized aluminum substrate that is extremely durable. It’s one of the best materials to use for aggressive environments that require a high level of compatibility with various contaminants. In fact,Metalphotois identified by the National Association of Graphic and Product Identification Manufacturers (GPI) Industry Standards and Practices Manual as the most durable printed aluminum substrate available due to its applicability for extreme environmental conditions and outdoor exposure. Metalphoto also received the highest score among IUID (Item Unique Identification) label materials in astudy conducted by the U.S. Navy.
设计格式
The IUID guidelines do not specify a size requirement, so the proper size and shape for the label should be chosen based on the expected scanning parameters. Consider the scanning distances that will be used and the expected placement on the item surface. It’s also important to choose a suitable fabrication style.
- 直接零件标记（DPM）涉及直接在项目表面上创建烙印或蚀刻。在无法正确连接到资产的标签或板块的情况下，这是可取的。DPM的缺点包括潜在的可读性问题和由于表面标记的形状而引起的阴影。
- A label or plate可以制造以放置在物品上。该标签必须是A级项目，具有出色的对比度和可接受的点音高。黑白标签通常是高对比度与彩色标签的首选。始终建议在购买前验证标签的预期均匀性和可读性。
The design must also include a properly formatted 2D data matrix barcode that remains readable throughout the asset’s lifetime. Three constructs are defined in the IUID guidelines that define the formatting for the label contents including serialized number formats. Consult the regulations for details about Construct 0, Construct 1, and Construct 2.
Tagging
Labels can be purchased from a合格的供应商或用自己的设备内部制造。在确定订单之前，选择标签或板的附件方法也很重要。这可能包括使用用于机械附着的兼容粘合剂或孔。这些IUID标签将其放置在项目上是另一个关键步骤。仔细考虑方向和位置，以确保良好的扫描范围和适当的物品表面附件。
The IUID labels you select must be readable for as long as they are used. It’s also important to create inspection procedures to periodically verify that labels are in proper condition. There may also be a need to define cleaning protocols that are especially helpful in dirty environments such as the desert or ocean. With a精心计划的IUID标记程序，您可以创建一个符合国防部严格要求的串行跟踪系统。
