Abb Research Ltd.

Christoffer Apneseth

Dacfey Dzung

John Pretlove

Charlotte Skourup

Jan Endresen

Thomas Pettersen

Pierre Öberg

Harald Vefling

Svein Johannessen

Øyvind Holmeide

Trond Lokstad

Tor Skeie

The present invention relates to a method for identifying inaccurate time measurements in a local area network. The local area network comprises a sending device (), such as a time client, a destination device (), such as a timeserver, and a switching device and/or a store-and-forward device (). A time request packet () is rejected if it arrives at the time client or timeserver within a given or calculated minimum distance from the preceding network packet. The time request packet () is also rejected if it falls outside a set of calculated error limits based on a set of estimates. Those estimates are kept in the time client memory and updated according to a given set of rules.

Method for synchronization in a local area network including a store-and-forward device

A method to generate technical information about a device or process by recognizing the identity of a device or process, retrieving a stored image dependent on the device, combining the stored virtual image together with an image of a real device object, displaying the combination on a display and providing a virtual control HMI means to the user for monitoring and/or controlling the device or process. A graphical user interface, computer program and a system are also described.

Method to generate a human machine interface

A method is proposed for operating a system according to TDMA (Time Division Multiple Access) with a multiplicity of wireless sensors and/or actuators as nodes (S.. . . S.n) and a base station (BS), said system being installed in a machine or installation, such as industrial robots or an automated manufacturing or production unit, whereby cyclical TDMA data transmission blocks are transmitted and each TDMA data transmission block is composed of consecutive time slots. Each time slot is allocated to a specific node. The uplink signals (UL.. . . UL.n) can be transmitted from the different nodes (S.. . . S.n) to the base station (BS) simultaneously on two, three or more different frequencies (fff) whereas the. downlink signals (DL) are transmitted from the base station (BSA) to the different nodes (S.. . . S.n) on only one frequency, which differs from the uplink frequencies. The time slots and the different uplink frequencies of the different nodes are defined once and are thereafter retained.

Method for operating a system with a multiplicity of nodes and a base station according to TDMA and a system for this purpose

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Oslo, Norway

Christoffer Apneseth