Formaldehyde detection device and method based on intermediate infrared tunable laser
A technology for tuning lasers and detection devices, which is applied in the direction of color/spectral characteristic measurement, etc., can solve the problems of long analysis time, susceptibility to interference, and low measurement sensitivity, so as to ensure life, health and safety, simplify the measurement process, and high detection sensitivity Effect
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[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0022] Such as figure 1 As shown, the embodiment of the present invention discloses a formaldehyde detection device based on a mid-infrared tunable laser, including a signal generation module 1, a laser driver 2, a laser light source 3, a detector 4, a lock-in amplifier module 5, and a signal processing module 6 , a result display module 7 , a converging lens 8 , a rotating table 9 , and a result emission module 10 . The signal generation module 1 is connecte...
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