Systems and methods for monitoring temperature of electrical conductor
First Claim
1. A system for monitoring temperature of an electrical conductor enclosed in at least a first semi-conductive layer, the system comprising:
- a temperature sensor unit located inside the first semi-conductive layer, and comprising a micro-controller, a temperature sensor, an energy harvest sub-unit and a wireless transmitter, and the temperature sensor adapted to detect a first signal representing temperature of the electrical conductor and to supply the first signal to the micro-controller; and
a transceiver unit located outside the first semi-conductive layer and comprising an energy transmitter and a wireless receiver;
wherein, 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 converted from the first signal to the wireless receiver; and
the energy harvest sub-unit and the wireless transmitter are designed to have different working frequency, wherein a ratio of the working frequency of the wireless transmitter to that of the energy harvest sub-unit is larger than 100, wherein the energy harvest sub-unit has a working frequency in a range from 10 KHz to 990 KHz, and wherein the wireless transmitter has a working frequency in a range from 10 MHz to 10 GHz.
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Accused Products
Abstract
A system (100) for monitoring a temperature of an electrical conductor of an electrical cable and including a temperature sensor unit (100a) and a transceiver unit (100b). The temperature sensor unit (100a) is located inside the first (semi)conductive layer and includes a micro-controller (120), a temperature sensor (110), an energy harvest sub-unit (140) and a wireless transmitter layer (130). The temperature sensor (110) is adapted to detect a first signal (S1) representing temperature of the electrical conductor and to supply the first signal (S1) to the micro-controller (120). The transceiver unit (100b) is located outside the first (semi)conductive layer and includes an energy transmitter (160) and a wireless receiver (150). The energy harvest sub-unit (140) is adapted to harvest electromagnetic power from the energy transmitter (160) and to provide electrical power to the micro-controller (120). The wireless transmitter (130) is adapted to being engaged with the wireless receiver (150) under the control of the micro-controller (120) to transmit a second signal (S2) converted from the first signal (S1) to the wireless receiver (150). The energy harvest sub-unit (140) and the wireless transmitter (130) are designed to have different working frequency.
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Citations
11 Claims
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1. A system for monitoring temperature of an electrical conductor enclosed in at least a first semi-conductive layer, the system comprising:
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a temperature sensor unit located inside the first semi-conductive layer, and comprising a micro-controller, a temperature sensor, an energy harvest sub-unit and a wireless transmitter, and the temperature sensor adapted to detect a first signal representing temperature of the electrical conductor and to supply the first signal to the micro-controller; and a transceiver unit located outside the first semi-conductive layer and comprising an energy transmitter and a wireless receiver; wherein, 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 converted from the first signal to the wireless receiver; and the energy harvest sub-unit and the wireless transmitter are designed to have different working frequency, wherein a ratio of the working frequency of the wireless transmitter to that of the energy harvest sub-unit is larger than 100, wherein the energy harvest sub-unit has a working frequency in a range from 10 KHz to 990 KHz, and wherein the wireless transmitter has a working frequency in a range from 10 MHz to 10 GHz. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of monitoring temperature of an electrical conductor enclosed in at least a first semi-conductive layer, comprising the steps of:
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harvesting electrical power and providing the electrical power to a first micro-controller by an energy harvest sub-unit working on a first working frequency, the first micro-controller and the energy harvest sub-unit located inside the first (semi)conductive layer; detecting a first signal representing temperature of the electrical conductor by a temperature sensor unit located inside the first semi-conductive layer; converting the first signal by the first micro-controller into a second signal applicable of being transmitted via a wireless way; and transmitting the second signal by a wireless transmitter to a wireless receiver located outside the first semi-conductive layer, the wireless transmitter located inside the first semi-conductive layer and working on a second working frequency different from the first working frequency, wherein a ratio of the second working frequency to the first working frequency is larger than 100, wherein the energy harvest sub-unit has a working frequency in a range from 10 KHz to 990 KHz, and wherein the wireless transmitter has a working frequency in a range from 10 MHz to 10 GHz. - View Dependent Claims (10, 11)
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Specification