Illinois at Singapore Pte Ltd

Agency for Science, Technology and Research

Singapore University of Technology and Design

Sreejaya Viswanathan

Yang Li

Binbin Chen

David Ky Yau

Rui Tan

Embodiments of the present invention provide a method and system for timing related tasks in IoT systems, for example, in relation to synchronisation of clocks and timestamping. It is desirable that the method and system is able to withstand external tampering in a manner which does not jeopardise the accuracy and integrity of time related tasks in the IoT systems.

Method and system for carrying out timing related tasks

According to various embodiments, there is provided an electric meter including a sensor circuit configured to provide a plurality of instantaneous magnetic field measurements; a processing circuit configured to generate a time-series of magnetic field vectors, each magnetic field vector of the time-series of magnetic field vectors including the plurality of instantaneous magnetic field measurements; and a total current determination circuit configured to determine a total current, wherein the total current is a sum of currents of each branch of a plurality of branches of a power distribution network; wherein the processing circuit is further configured to compute a de-mixing matrix based on the determined total current and the time-series of magnetic field vectors, and further configured to linear transform each magnetic field vector using the de-mixing matrix to determine a current of each branch.

Electric meter, an electric meter system and a method of providing branch-level readings for a power distribution network

Growing community of inventors

Singapore, Singapore

Sreejaya Viswanathan