A high precision optical fiber icing sensor, system and method

An icing sensor, high-precision technology, applied in the field of wind tunnel testing, can solve the problems of detection limitations, inaccurate measurement, and no protection considerations, etc., to achieve the effect of ensuring no icing

Active Publication Date: 2022-04-26
LOW SPEED AERODYNAMIC INST OF CHINESE AERODYNAMIC RES & DEV CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The icing measurement is mainly realized by the icing sensor. At present, the commonly used icing sensors on the airborne can only output the signal of presence / absence of icing, and the detection is relatively limited. Moreover, the protection methods in other areas are relatively simple, and even no protection considerations have been taken.
As one of the emerging icing sensors, the optical fiber icing sensor has the functions of measuring ice thickness, ice type, and ice-covered area. However, when the optical fiber icing sensor is used in icy environments, the measurement will be inaccurate. Difficult to apply in simulation experiments, thus limiting the application of fiber optic icing sensors in icing environments

Method used

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  • A high precision optical fiber icing sensor, system and method
  • A high precision optical fiber icing sensor, system and method
  • A high precision optical fiber icing sensor, system and method

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Experimental program
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Embodiment 1

[0039] Such as figure 1 , figure 2 , image 3 As shown, Embodiment 1 of the present invention provides a high-precision optical fiber icing sensor 100, which includes a sensing part 120 and a non-sensing part 110 connected to each other. The non-sensing part 110 is provided with a temperature measurement area 111, and the The temperature measurement area 111 is arranged on the windward surface 112 of the non-sensing part, and the temperature measurement area 111 is used to obtain temperature information on the surface of the non-sensing part 110 .

[0040] After many tests and observations, the applicant combined with the applicant's own practical experience found that: the main reason for the inaccurate measurement of the optical fiber icing sensor 100 is that the non-sensing part 110 other than the sensing part 120 will freeze in the freezing environment The icing of the non-sensing part 110 will change the icing environment of the optical fiber icing sensor 100, affect t...

Embodiment 2

[0051] Such as Figure 5 As shown, Embodiment 2 of the present invention provides an anti-icing temperature control system, including a temperature measurement system, a control system, and an anti-icing system. The control system is connected to the temperature measurement system and the anti-icing system. The temperature system includes the optical fiber icing sensor 100 described above.

[0052] The temperature measurement system and the anti-icing system are connected through the control system, so that the temperature value and / or temperature change obtained by the temperature measurement system can be fed back and adjusted in time through the control system, and the anti-icing system is controlled by the temperature measurement system to control the optical fiber icing sensor 100 surfaces for effective and precise deicing.

[0053] Further, the control system is connected to the temperature measurement area 111, specifically, the control system is respectively connected...

Embodiment 3

[0059] Such as Figure 6 As shown, Embodiment 3 of the present invention provides an anti-icing temperature control method, including the following steps:

[0060] Step S10: Turn on the anti-icing temperature control system;

[0061] Step S20: When the temperature in the temperature measurement area 111 is lower than the preset temperature value, increase the anti-icing power until the temperature in the temperature measurement area 111 meets the preset temperature value, and the temperature in the temperature measurement area 111 is the temperature value of all temperature measurement points the mean value of

[0062] Step S30: Enter the freezing environment.

[0063] When the optical fiber icing sensor 100 enters the icing environment, the temperature on the surface of the non-sensing part 110 drops rapidly to the freezing temperature, such as 0°C; There will be rapid changes. In most cases, the temperature rise slope is large, that is, the temperature change in the freez...

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Abstract

The present invention is applicable to the technical field of wind tunnel test, and provides a high-precision optical fiber icing sensor, system and method. The optical fiber icing sensor includes a sensing part and a non-sensing part connected to each other. A temperature zone, the temperature measurement zone is set on the windward surface of the non-sensing part, and the temperature measurement zone is used to obtain temperature information on the surface of the non-sensing part. The optical fiber icing sensor, system and method provided by the invention have the characteristics of high measurement accuracy.

Description

technical field [0001] The invention relates to the technical field of wind tunnel tests, in particular to a high-precision optical fiber icing sensor, system and method. Background technique [0002] When the aircraft is flying in a high-altitude cloud environment, the windward parts outside the aircraft collide with the supercooled water droplets, and the surface of the parts freezes and destroys the aerodynamic shape, resulting in a decrease in aerodynamic performance, which affects the flight state at least, and causes flight accidents at worst. In addition, relevant studies have shown that There is a big difference in the occurrence of ice in different parts. A small amount of icing on key components is as harmful as that of a large amount of icing. Therefore, icing is one of the hazards to flight safety. In order to deeply explore the icing problem and further optimize the anti-icing means, it is very necessary to carry out accurate icing measurement, to meet the requi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05D23/30
CPCG05D23/30
Inventor 易贤冉林熊建军赵照
Owner LOW SPEED AERODYNAMIC INST OF CHINESE AERODYNAMIC RES & DEV CENT
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