Upcoming product release: Wireless M-Bus to mioty bridge

Taking the best parts of the OMS repeater and OMS to LTE-M1 gateway

The mioty bridge use the truly extraordinary radio technology already present in the Lansen OMS repeater to convert Wireless M-Bus data to mioty. The repeater for wireless M-Bus has been developed into perfection, and generation 4 of the repeater is now considered to be the most robust and easy to use OMS repeater on the market.

This year we have also released the OMS to LTE-M1 gateway that use TLS and MQTT to transparently transmit OMS data to the cloud. This device is built on the repeater platform, and just like the repeater, the device is an easy and powerful tool to transmit data directly to the cloud.

Now it is time for the next revolution!
We are now proud to present the brand-new OMS (wM-bus) to mioty bridge, taking the best parts of the OMS repeater and the LTE-M1 gateway. The device will as the LTE-M1 Gateway and repeaters be available with either 10 years worry free battery-time or be mains (230V) powered.

Features

• Receives T-, C- or S-mode according to EN 13757-3/4.
• Time stamping of all incoming packets.
• Ultra-high accuracy TCXO for accurate time stamping.
• Configuration using the LAN-WMBUS-D1/D2 configuration dongle using a powerful and easy to use GUI.

Mioty device class
 Class-Z (unidirectional and uplink only).

Configurable features

• Whitelist of devices.
• Whitelist of manufacturers.
• Automatic or manual meter installation.
• Suppression timer (how often data from a specific transmitter should be repeated via mioty bridge.)

Tailormade configuration for battery version

The battery powered bridge has a tailormade, fully configurable listen and sleep time. For example, you can set the device to listen for wireless M-Bus data 3 minutes per hour or 20 minutes per day. You can also set the absolute start time at a specific day of the week.

Status packet.

Every 12 hours a status packet is transmitted from the device containing information such as:

• Battery voltage.
• Meters in the routing list.
• Routed packets in total.
• Listen / no listen settings etc.
• Supression timer settings.

Battery version

The store and forward technology are used for the battery version of the bridge. This means that data is saved from meters in the routing list in a permanent memory during the listen period (for example every 20 minutes). The data is saved encrypted as transmitted from the wireless M-Bus meter together with the current timestamp and RSSI.

When the listen period has ended the data stored in the flash memory is transmitted using the mioty protocol. That means that the transmitted data is spread out during the rest of the hour, 24 hours, or even the rest of the week depending on setting. With this way many more meters can be handled while still complying with duty cycle regulation of as defined in EN 300-220.

Maximum number of meters
The maximum number of devices with the standard configuration is 2000 devices but can be further increased if needed. Contact our development team here if that is needed!

Maximum number of packets
The number of meters that can be handled is mostly related to the duty cycle and the sleep period/suppression period.

There are 2 different ways of handling the transmission duty cycle that the mioty bridge uses:

• Strict compliance of 1% duty cycle.
  Gives 36 seconds / hours for data transmission.
• Using the polite spectrum access mechanism as defined in EN 300-220.
  Gives 200 seconds / hours for data transmission.

Each wM-Bus byte received is encoded into one mioty subpacket due to the FEC encoding used by mioty. That means that the device can handle up to:

• 2000 devices with daily reading if the wM-Bus packet is 100 bytes long.
• 45 devices with readings as often as every 15 minutes if the wM-Bus packet is 47 bytes long.

The device starts retransmitting trying to comply with the 1% duty cycle regulation. If too many meters are in the routing list and the suppression is set such that it makes it impossible to comply, the device switches to polite spectrum access schematic to be able to serve more meters.

This feature is enabled by default but can be turned off using the LansenConfigurator configuration tool.