Wireless temperature sensor based on pt symmetry

Abstract

The invention discloses a wireless temperature sensor based on PT symmetry, which includes: a loss layer, a first inductance layer, a second inductance layer and a gain layer, wherein, when sensing at a short distance, the wireless temperature sensor consists of a loss layer, a first inductance layer, and a gain layer. Layer and gain layer are connected in sequence, lithium niobate material is used between the loss layer and the first inductance layer, and the rest space is air; for long-distance sensing, the wireless temperature sensor consists of loss layer, first inductance layer, second inductance layer The layer and the gain layer are connected in sequence, the lithium niobate material is between the loss layer and the first inductance layer, the air is between the first inductance layer and the second inductance layer, and the air is between the second inductance layer and the gain layer. The wireless temperature sensor reads the transmittance at a fixed wavelength, which can simplify the data reading process. At the same time, by changing the placement method and number of inductive layers in the sensor, the short-range sensing mode and long-distance sensing mode of the sensor can be adjusted. Inductive mode, to achieve temperature testing in high temperature and harsh environments.

Description

technical field [0001] The invention relates to the field of sensing technology, in particular to a wireless temperature sensor based on a PT symmetrical structure. Background technique [0002] The 21st century is an era of informatization. As one of the pillars of the information industry, sensor technology has become an important standard for measuring the degree of national informatization. In the past few decades, especially after realizing that some non-Hermitian operators satisfying parity-time (Parity-time, PT) symmetry have real eigenvalue properties similar to Hermitian operators, based on PT symmetry The sensing design of the system has attracted extensive attention of scientific researchers. After the theoretical explanation of the property of PT symmetric system to enhance the sensitivity of weak perturbation sensing, it is widely used in the sensing research of various physical parameters, mainly including particle detection, temperature sensing, refractive in...

AI Technical Summary

Problems solved by technology

But the traditional temperature sensor has the following disadvantages: First, the complexity of the manufacturing process makes it very expensive

Second, most sensing schemes measure the position movement of the transmission peak, which is cumbersome in reading data

Third, the traditional temperature sensor has no gain mechanism, and there is a problem that the intensity of the transmitted wave is too small to detect

Fourth, traditional leaded temperature sensors are prone to failure in high temperature environments

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