Unstable environment transient-state temperature measuring device based on coarse and fine two-stage light splitting structure

Abstract

The invention discloses an unstable environment transient-state temperature measuring device based on a coarse and fine two-stage light splitting structure. The temperature measuring device comprises a front optical mechanism, a conducting fiber, a light splitting mechanism and a signal acquiring and processing module. The front optical mechanism transmits a spectrum sent by a target to the light splitting mechanism via the conducting fiber. The light splitting mechanism separates, extracts and sends characteristic spectrum signals to the signal acquiring and processing module. The signal acquiring and processing module generates voltage signals corresponding to strength of the characteristic spectrum signals, and analyzes the voltage signals based on the excitation temperature algorithm mathematic model and the radiation temperature algorithm mathematic model so as to obtain the transient-state temperature of a to-be-measured object. According to the invention, the temperature measuring device is capable of extracting characteristic spectrums of various kinds of elements in a wide spectral region and precisely measures the temperature of the target in the unstable and harsh environment with strong electromagnetic radiation and vibration and rapid temperature change.

Description

technical field

[0001] The invention belongs to the field of optical precision testing, and in particular relates to a device for measuring transient temperature in an unsteady environment based on a coarse-fine secondary light splitting structure. Background technique

[0002] In many fields such as industrial production and medical treatment, temperature detection is involved. In many cases, the temperature does not remain constant. On the contrary, it changes rapidly with time. The temperature in this case is the transient temperature. Real-time monitoring of transient temperature is an important means to keep abreast of the real-time working state inside the system and the interaction of various parameters.

[0003] At present, temperature measurement is classified according to the principle, which can be divided into two categories: contact temperature measurement and non-contact temperature measurement.

[0004] The contact temperature measurement method is mainly to ...

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