Electronic Shelf Label (ESL)

概要

Electronic Shelf Label System consists of AP(Access Point) and ESL(price tag). The tag is a wireless data receiver with an ID code, which is placed on store shelves and connected to the AP for receiving the commands to change prices ,sales information and product features remotely, and displays the latest product prices through the E-Ink screen on the ESL tag.

Benefit: 

  • Low Energy Long Range
  • Ultra-low power consumption
  • Periodic Advertising with Response
  • Encrypted Advertising Data
  • E-INK display Technology
  • Large amounts of nodes synchronized

About ESL Area:

Bluetooth 5.4 is the newest version of Bluetooth technology, released by Bluetooth Special Interest Group (SIG) in February of 2023, including two new features that together enable secure, bi-directional communication between a wireless access point (AP) and thousands of very-low power end nodes. The rapidly growing Electronic Shelf Label (ESL) market will highly benefit from two features by allowing the use of the current standard-based Bluetooth wireless communication. Bluetooth 5.4 is ushering ESL application into a new era.

PAwR (Periodic Advertising with Response), this feature adds the capability for ESL tags receiving data from a periodic advertiser to respond to the transmitter of the periodic advertiser. Additionally, tags can be allocated to different groups (up to 128 groups, max 255 tags per group), allowing them to just listen to their group’s transmission. With this feature, massive-sized star network can be implemented powerfully and efficiently with ultra-low power consumption. Also, these tags can precisely be synchronized and respond to data within PAwR subevents through the packetized data in deterministic time slots. In sum, PAwR enables energy-efficient, bi-directional communication in a large-scale one-to-many or star topology. New ESL profile in Bluetooth 5.4 spec is based on this feature.

EAD provides a standardized approach to the secure broadcasting of data in advertising packets The requirement of encrypting advertising data can be enabled with this feature. Encrypted advertisement data can be received by any ESL tag but can only be decrypted and authenticated by tags that have previously shared the session key. The significant benefit from this feature is that it allows for the encryption of data shared over periodic advertisement with responses. 

The AIROC™ Bluetooth® Low Energy portfolio offers solutions to deliver the most reliable and highest performing connectivity for your applications. AIROC™ Bluetooth® Low Energy portfolio consists of Bluetooth® LE System-on-Chip (SoC) devices, The AIROC™ Bluetooth® Low Energy  devices enable compute at the edge capability for a variety of IoT applications. These highly integrated SoC devices also allows interfacing with external components along with Reliable, long-range Bluetooth® Connectivity.

Infineon’s AIROC™ CYW20829 Bluetooth® LE system on chip is ready for the Bluetooth 5.4 specification. This specification adds several significant capabilities to the existing, including Periodic Advertising with Response (PAwR), Encrypted Advertisement Data (EAD), and LE GATT Security Levels Characteristic. PAwR enables energy-efficient, bi-directional communication in a large-scale one-to-many or star topology. EAD provides a standardized approach to the secure broadcasting of data in advertising packets

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