FPGA-based infrared detection driver uniform correction and noise control

Abstract

The invention relates to an FPGA-based infrared detection driver uniform correction and noise control, and relates to the field of infrared thermal imaging technology, and the method comprises the steps: obtaining object radiation information in real time, the object radiation information comprising an actual radiation wavelength and an actual radiation frequency; querying a reference radiation wavelength corresponding to the actual radiation wavelength and a reference radiation frequency corresponding to the actual radiation frequency from a preset correction database; if the actual radiation wavelength accords with the reference radiation wavelength and the actual radiation frequency accords with the reference radiation frequency, a human body detection instruction is generated and executed, and the human body detection instruction is used for controlling the infrared detector to output a detection signal according to the current object radiation information. The infrared detector has the effect that the infrared detector can accurately recognize human body radiation in the working process.

Description

technical field [0001] This application relates to the field of infrared thermal imaging technology, in particular to an FPGA-based infrared detection driver uniform correction and noise control. Background technique [0002] In an infrared detector, a pyroelectric element detects the presence or movement of a human body, and converts the output signal of the pyroelectric element into a voltage signal. Then, waveform analysis is performed on the voltage signal. When the infrared detector detects the waveform generated by the human body through waveform analysis, it outputs a detection signal to realize its human body detection and recognition function. [0003] Related technologies can refer to the Chinese patent with publication number CN107959800A, which discloses an uncooled infrared thermal imaging system based on FPGA, including the connection of the bias signal input end of the infrared detection module to the output end of the bias modulation module, and the bias mod...

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Problems solved by technology

[0004] In view of the related technologies mentioned above, the inventor believes that there are the following defects: when the infrared detection driver performs infrared detection on the human body, the infrared detector is easily interfered by various external heat sources and sunlight sources during the working process, making the infrared detector It is difficult to accurately identify the heat source during the working process, and there is a defect that the infrared detector is not accurate enough in the detection process of the human body

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