Systems and methods for monitoring temperature of electrical conductor

Abstract

A system () for monitoring a temperature of an electrical conductor of an electrical cable and including a temperature sensor unit () and a transceiver unit (). The temperature sensor unit () is located inside the first (semi)conductive layer and includes a micro-controller (), a temperature sensor (), an energy harvest sub-unit () and a wireless transmitter layer (). The temperature sensor () is adapted to detect a first signal (S) representing temperature of the electrical conductor and to supply the first signal (S) to the micro-controller (). The transceiver unit () is located outside the first (semi)conductive layer and includes an energy transmitter () and a wireless receiver (). The energy harvest sub-unit () is adapted to harvest electromagnetic power from the energy transmitter () and to provide electrical power to the micro-controller (). The wireless transmitter () is adapted to being engaged with the wireless receiver () under the control of the micro-controller () to transmit a second signal (S) converted from the first signal (S) to the wireless receiver (). The energy harvest sub-unit () and the wireless transmitter () are designed to have different working frequency.