Temperature and humidity process control hot air dryer machine vision online detection system and method

Abstract

The invention provides a humidity and temperature process controllable hot air drying machine vision on-line detection system and a method. The humidity and temperature process controllable hot air drying machine vision on-line detection system mainly comprises a water storage tank (4), a cooling water pipe (5), a light source fixing pedestal (6), a light source cooling housing (7), an industrialcamera fixing pedestal (8), an industrial cooling housing (9), cooling housing fixing flanges (10), a cooling water pump (11), an industrial camera and a lens (14), and a light source (15); the humidity and temperature process controllable hot air drying machine vision on-line detection system can be used for image acquisition, is capable of separating a drying chamber from the industrial camera,and avoiding denaturation influences of high temperature on the industrial camera, the lens, and the light source. The invention also discloses the method using the humidity and temperature process controllable hot air drying machine vision on-line detection system. The method is used for controlling industrial camera image acquiring frequency, real-time obtaining of material shape and color, regulating and controlling indoor humidity and temperature. Machine vision on-line detection method is adopted to detect the shape and the color, compared with a method used for measuring material size using a vernier caliper and detecting material color with a color difference meter, the advantages are that: measuring precision and efficiency are increased.

Description

technical field [0001] The invention relates to the technical field of agricultural product drying, in particular to a machine vision online detection system and method for a hot air dryer with temperature and humidity process control. Background technique [0002] Drying is an important link in the processing and storage of agricultural products in the prior art, and hot air drying is one of the main drying methods. During the hot air drying process, the heat is conducted to the inside through the surface of the material, while the moisture is conducted from the inside to the outside. In the early stage of drying, due to the large temperature difference between the inside and outside of the material, the phenomenon of dry crusting on the surface and high internal moisture content often occurs. At this time, the material Surface crusting creates resistance to the diffusion of moisture within the material. In addition, the moisture evaporated from the material during the dry...

AI Technical Summary

Problems solved by technology

However, for the hot air drying technology with temperature and humidity process control, in the early stage of drying, the drying room needs to maintain a high temperature and high humidity state. If the offline detection method is used, the high humidity environment will be destroyed, so it needs to be carried out without opening the drying room. detection

Images