Overview and explanation of ID carriers

In order to be able to identify an object beyond doubt throughout the entire logistics chain, it can be identified by an identification carrier. This carrier is generated by an identification system. The components of such a system consist of a mobile data storage device (MDS), a read/write device and an evaluation unit.

The identifier itself usually consists of a memory unit and an antenna for receiving and sending signals. It is attached to the object and can be read using electromagnetic waves.

The ID carrier has the same function as a barcode, i.e. it informs the system about the content of the object. However, the ID carrier has some advantages over the barcode. Since it is read electronically, there is no risk of the information being obscured by dirt or the readability being impaired. Furthermore, an ID carrier can store considerably more information than a barcode.

As the object passes through the various interfaces of a distribution chain, the identifier is read using the electromagnetic waves. The material flow controller reads the information about the object and can instruct what happens to the object accordingly.

Since there are two different ways to obtain the energy for data transmission, identifiers are distinguished between active and passive identifiers. The active ones draw their energy from a built-in battery that lasts for two to three years depending on use. The passive ones draw their energy from the electromagnetic alternating field emitted by the read-write device.

You can find more information about identifiers at RFID as well as at Information in Intralogistics.