Toppan launches compact ZETA communication modules
Wireless firmware updates are enabled with the ZETA communication modules from Toppan Printing. The TZM902 communication module and Toppan’s other ZETA-related activities were presented at Wireless Japan (2 to 4 June).
Toppan has begun mass production of the communication module as a core component for ZETA, the next-generation low power wide area network (LPWAN) protocol.
The ZETA protocol features ultra narrow band (UNB), distributed access with intelligent mesh topology and bi-directional communication. As the IoT moves towards full-scale implementation, ZETA is garnering attention as a form of communication infrastructure for low data volume sensor devices, such as those for temperature, humidity, and voltage. ZETA uses battery-powered motes (intermediate nodes) to expand the network area, which enables stable wireless communication in locations in which connection using other LPWA networks can be problematic, such as factories with complex layouts and office buildings with underground facilities, explains Toppan.
The TZM901 communication module has been adopted for a wide range of sensor devices, sensor terminals, and other edge devices that are integral to ZETA networks. Integration and the use of an SoC have resulted in the TZM902 being approximately 25 per cent smaller and with no antenna connector.
Toppan’s ZETA communication modules feature low power, bi-directional communication and ad hoc networks formed by modules connecting automatically when charging is complete. The self-healing networks ensure the reliability of data transmission because the module automatically attempts to reconnect to the network if it becomes disconnected. Optimal routing and transmission scheduling policies are selected to ensure efficient data transmission, while the UART connection interface facilitates product development through connection to general sensors via microcomputers. Robust security is provided by standard functions for encryption-based data protection, spoofing prevention, and inhibition of communication between different groups using device whitelists.
The TZM902 module also supports firmware over the air (FOTA) for wireless rewriting of firmware. Updates of the functions of communication modules have traditionally required devices to be recovered and communication protocols to be rewritten via physical connections. TZM902 makes it possible to perform the operation over wireless networks to update devices that are already on the market. This eliminates the need to recover terminals and vastly improves the efficiency of maintenance operations, particularly for devices in locations that are remote or difficult to access.
Toppan has also launched ZETA TZM902 add-on board for SPRESENSE. Sony Semiconductor Solutions’ SPRESENSE1 is a low power board computer for the IoT that is equipped with a GPS receiver and supports high-resolution audio codecs. It facilitates development and evaluation of high performance, low power ZETA-compatible edge devices in short timeframes.
