Terahertz imaging calibration method and device
A technique for terahertz imaging and calibration method
Active Publication Date: 2020-04-21
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 terahertz imaging calibration method and device. The method comprises the steps: recording the temperature of each terahertz detection unit; keeping the temperature of a first terahertz detection unit unchanged, changing an output signal of the terahertz detection unit, and recording the temperature of each terahertz detection unit at the moment; changing an ambient temperature to obtain the temperatures of multiple groups of terahertz detection units, and respectively storing the temperatures into a standard table; and reading the temperatures of the other corresponding terahertz detection units from the standard table, and controlling the temperatures of the other terahertz detection units at the corresponding temperatures so as to enable signals output by eachterahertz detection unit to be close to each other. Effective consistency calibration can be performed on each unit in the terahertz detection array; the consistency of the terahertz detection array can be greatly improved; the defect that the existing terahertz detection array is poor in consistency is effectively overcome; the performance of the terahertz detection array is improved; the use scene of the terahertz detection array is widened; and the quality of terahertz imaging is further improved.
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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Login to View More 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