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A passive wireless temperature measurement sensor and temperature measurement method

A temperature measurement sensor, passive wireless technology, applied in the direction of instruments, thermometers, measuring devices, etc., can solve the problems of adding optical transmission parts, shielded cables with weak anti-interference ability, complex structure, etc.

Active Publication Date: 2018-06-26
XI AN JIAOTONG UNIV
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  • Claims
  • Application Information

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Problems solved by technology

At the same time, the existing technology mostly uses shielded signal cables to transmit data. Shielded cables have weak anti-interference ability in high-voltage and strong magnetic field environments and are susceptible to electromagnetic interference.
Although using optical fiber to transmit data will not be disturbed by strong magnetic fields, but the optical transmission part is added, and the structure is more complicated

Method used

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  • A passive wireless temperature measurement sensor and temperature measurement method
  • A passive wireless temperature measurement sensor and temperature measurement method
  • A passive wireless temperature measurement sensor and temperature measurement method

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Embodiment Construction

[0047] The present invention is described in further detail below in conjunction with accompanying drawing:

[0048] see figure 1 , the invention includes a power supply module, a controller, a temperature measurement module and a data transceiver module; the controller adopts a low-power single-chip microcomputer in an intermittent working mode. The power module includes a number of semiconductor thermoelectric power generation chips 3 wrapped on the outside of the power wire 1, radiators are arranged at both ends of the semiconductor thermoelectric power generation chips 3, and the two poles of the semiconductor thermoelectric power generation chips 3 are output power sources, and are connected to the energy harvesting circuit;

[0049] The semiconductor thermoelectric power generation sheet 3 adopts a ring-shaped structure to wrap the power conductor 1, and 6 semiconductor thermoelectric power generation sheets of the same type are used in series to form a ring structure in...

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Abstract

The invention discloses a passive wireless temperature measuring sensor and a temperature measuring method. The temperature measuring sensor is composed of a power supply module, a control module, a temperature measurement module and an infrared data transceiver module. The hot end of the thermoelectric power generation chip is attached to the surface of the high-voltage and high-current power wire, and it is fixed on the power wire with a pressure equalizing ring bracket, and the temperature difference generated by the current passing through the power wire is used to generate electricity and collect energy; through the energy collection chip, the semiconductor The direct current output by the thermoelectric generator is boosted and rectified, and stored in a capacitor to supply power to subsequent circuits; high-precision temperature measurement is realized based on platinum resistors, and temperature data is transmitted by infrared light encoding. The invention can be used to monitor the temperature rise of high-voltage power transmission and distribution system equipment, does not need power supply, has high precision, good stability, strong anti-electromagnetic interference ability, and is convenient for installation and application on high-voltage and movable parts.

Description

【Technical field】 [0001] The invention belongs to the field of state monitoring of electric equipment in a high-voltage power transmission and distribution system, and relates to a passive wireless temperature measuring sensor and a temperature measuring method. 【Background technique】 [0002] In the high-voltage power transmission and distribution system, the power equipment is an important part of the high-voltage power transmission and distribution system, and the health of the power equipment is related to the safety and stability of the power supply. Long-term overload operation or excessive current carrying capacity cause excessive local temperature is one of the main reasons for power equipment failure. If the local temperature of the power equipment is too high, it will affect the service life of the equipment, and if it is serious, it will cause equipment failure, cause a power outage, and even cause the collapse and paralysis of the power system, resulting in serio...

Claims

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Application Information

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IPC IPC(8): G01K1/02G01K7/21H02N11/00G01K1/024
CPCH02N11/002G01K1/024G01K7/21
Inventor 张国钢陈前刘竞存耿英三王建华
Owner XI AN JIAOTONG UNIV
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