Fan ventilation quantity detection method and device
A detection method and ventilation volume technology, which are applied in the field of image recognition to achieve stable detection and reduce data fluctuations.
Pending Publication Date: 2021-10-29
BEIJING RES CENT FOR INFORMATION TECH & AGRI
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Problems solved by technology
[0005] Aiming at the problems of the above-mentioned deficiencies in the prior art when performing ventilation volume detection, the embodiment of the present invention provides a fan ventilation volume detection method and device
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[0042] In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions in the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention. Obviously, the described embodiments are part of the embodiments of the present invention , but not all examples. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0043]It should be noted that, in the description of the embodiments of the present invention, the terms "comprising", "comprising" or any other variant thereof are intended to cover a non-exclusive inclusion, so that a process, method, article or device comprising a series of elements Not only those elements are included, but also other elements not expressly listed or inherent in such proce...
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The invention provides a fan ventilation quantity detection method and device, wherein the method comprises the steps: respectively calculating dense optical flows of a target fan image and an adjacent frame fan image, so as to construct a motion vector matrix related to all pixel points in the target fan image; obtaining the digital characteristics of the motion vector matrix in the x direction and the y direction, and carrying out the function fitting of the digital characteristics and the ventilation quantity of the fan, so as to construct the function expression between the digital characteristics and the ventilation quantity of the fan; and based on the function expression, determining the fan ventilation quantity in the preset time window. According to the fan ventilation quantity detection method and device provided by the invention, in the whole process, the data form is greatly changed, and the initial video data is changed into the digital characteristics of data distribution; namely, the data is concentrated into simple characteristic data from complex to simple, so that the relation function of the ventilation quantity of the fan can be conveniently fitted. The method for stably detecting the ventilation quantity of the fan is provided, and the data fluctuation of the detection result is reduced.
Description
technical field [0001] The invention relates to the technical field of image recognition, in particular to a method and device for detecting the ventilation rate of a fan. Background technique [0002] The environment of livestock and poultry houses affects the key factors of livestock and poultry production and health in intensive breeding, and the technology of livestock and poultry breeding environment regulation is further developing towards refinement and cost-saving and efficiency-enhancing. Fan is a common equipment for environmental control in livestock and poultry houses. Frequency conversion fans are more and more used in livestock and poultry houses because of their advantages such as high energy efficiency ratio and adjustable air volume of a single fan. Ventilation adjustment is the core content of environmental control in livestock and poultry houses. With the development of digital animal husbandry, monitoring the real-time ventilation rate or ventilation leve...
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Patent Timeline
Login to View More IPC IPC(8): G06T7/207G06T7/246G06T7/11G06F17/16
CPCG06T7/207G06T7/246G06T7/11G06F17/16G06T2207/10016G06T2207/20132
Inventor 李奇峰丁露雨吕阳马为红余礼根高荣华于沁杨
Owner BEIJING RES CENT FOR INFORMATION TECH & AGRI