Range hood with fixed visual detection system and oil smoke concentration detection method

[0091] A range hood with a fixed visual inspection system, such as figure 1 and 2 As shown, a hood main body 2 and a fixed visual detection module 1 for detecting the size of oil fume are provided, and the fixed visual detection module 1 is assembled on the hood main body 2 .

[0092] The fixed visual detection module 1 is provided with a lens 131, and the angle of view of the lens 131 covers the cooktop, such as figure 1 The range formed by the two dotted lines of the fixed visual inspection module 1 in .

[0093] The fixed visual inspection module 1 processes and serializes the collected initial images, sequentially processes the initial images of the subsequent frames and the initial images of the previous frame, and obtains the current concentration of cooking fumes at the time of the initial images of each subsequent frame.

[0094] The fixed visual detection module 1 of this embodiment is provided with one, and the lens 131 covers the cooktop at an angle of view. The ...

[0102] A range hood with a fixed visual inspection system, such as image 3 and 4 As shown, other features are the same as in Embodiment 1, the difference is that there are two fixed visual detection modules 1, and each fixed visual detection module 1 is respectively provided with a lens 131, and the central axis of the lens 131 corresponds to the passage. The vertical overlap of the centers of the hob burners, such as image 3 Shown by the two dotted lines in .

[0103] Compared with Embodiment 1, this embodiment has two fixed visual detection modules 1 , and the centerlines of the lens 131 respectively overlap with the center of the corresponding burner head, which can improve the accuracy of oil fume detection.

[0105] A range hood with a fixed visual inspection system, such as Figures 5 to 7 As shown, other features are the same as in Embodiment 1, the difference is that the fixed visual detection module 1 is also provided with a device main body 11, a visual detection part 13, and a positive pressure part 12 that prevents oily smoke or water vapor from approaching the visual detection part 13, visually The detection unit 13 and the positive pressure unit 12 are respectively attached to the device main body 11 . The lens 131 is attached to the vision detection unit 13 .

[0106] The main body 11 of the device is provided with an air cavity part 111 , and the lens 131 is defined as upward toward the shooting area.

[0107] The lens 131 passes through the hole of the wind cavity part 111 and faces upward.

[0108] The positive pressure part 12 is assembled above the wind cavity part 111 and the air outlet 1122 of the positive pressure part 12 faces the wind cavity part 111 .

[0109]...