Calibration method and device for terahertz imaging
A technology of terahertz imaging and calibration method, which is applied in the field of terahertz imaging, can solve problems such as differences in output signals of terahertz detection units, reduce the use effect of terahertz detection arrays, and poor consistency of terahertz detection units, so as to make up for the lack of consistency Poor, widen usage scenarios, and improve quality
Active Publication Date: 2020-10-13
CHINA ELECTRONIC TECH GRP CORP NO 38 RES INST +1
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[0002] Terahertz detection array technology plays a vital role in the development of terahertz imaging field. However, the development maturity of current terahertz detection array technology is low, and the consistency between each terahertz detection unit is poor, that is, in the face of the same The output signal of each terahertz detection unit of the input will be quite different, which greatly reduces the use effect of the entire terahertz detection array
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[0022] The embodiments of the present invention are described in detail below. This embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following implementation example.
[0023] Such as figure 1 As shown, the specific implementation process of this embodiment is as follows:
[0024] 1. Use the reference terahertz radiation source 7 to generate reference terahertz radiation, and the first terahertz detection unit 1, the second terahertz detection unit 2 and the third terahertz detection unit 3 in the terahertz detection array 9 receive the reference terahertz radiation respectively. Hertz radiation. At this time, monitoring the output signals of the first terahertz detection unit 1, the second terahertz detection unit 2 and the third terahertz detection unit 3 are S1, S2, and S3 re...
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The invention discloses a calibration method and equipment for terahertz imaging, recording the temperature of each terahertz detection unit; keeping the temperature of the first terahertz detection unit unchanged, changing the output signal of the terahertz detection unit, and recording the temperature at this time The temperature of each terahertz detection unit; change the ambient temperature to obtain multiple sets of terahertz detection unit temperatures, and store them in the standard table; read the corresponding temperatures of other terahertz detection units from the standard table, and store the other The temperature of the terahertz detection unit is controlled at a corresponding temperature, so that the signals output by each terahertz detection unit are close to each other. It can achieve effective consistency calibration of each unit in the terahertz detection array, which can greatly improve the consistency of the terahertz detection array, effectively make up for the defects of poor consistency of the current terahertz detection array, and improve the performance of the terahertz detection array. Broaden the use scenarios of terahertz detection arrays and further improve the quality of terahertz imaging.
Description
technical field [0001] The present invention relates to a terahertz imaging technology, in particular to a calibration method and equipment for terahertz imaging. Background technique [0002] Terahertz detection array technology plays a vital role in the development of terahertz imaging field. However, the current development of terahertz detection array technology is relatively low, and the consistency between each terahertz detection unit is poor. The output signal of each terahertz detection unit of the input will be quite different, which greatly reduces the use effect of the entire terahertz detection array. [0003] The study found that the output signal of the terahertz detection unit is strongly affected by its own temperature. By precisely controlling the temperature of each unit in the terahertz detection array, the output signal can be adjusted to achieve consistent detection of the terahertz detection array. purpose of sex calibration. Contents of the inventi...
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IPC IPC(8): G01J5/00
CPCG01J5/00G01J2005/0077G01J5/80
Inventor 武帅安德越冯辉朱剑飞涂昊高炳西李霆
Owner CHINA ELECTRONIC TECH GRP CORP NO 38 RES INST