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CN-121994700-A - Intelligent electric-regulation inclined dome near infrared light source calibration system

CN121994700ACN 121994700 ACN121994700 ACN 121994700ACN-121994700-A

Abstract

The invention provides an intelligent electric-control inclined dome near-infrared light source calibration system which comprises a rack, a control console, a vertical electric lifter and a dome light source. The inclined dome light source is an integrally formed cone, and 4 halogen lamp cups are uniformly distributed on the inclined surface and used for guaranteeing uniformity of the light source. The inclined dome light source is arranged on a horizontal moving sleeve frame and can adjust the horizontal position, the horizontal moving sleeve is connected with a vertical electric lifter, the electric lifter is adjusted by measuring the height of a detection sample through a ranging sensor so as to adapt to the detection environment, a stabilized voltage power supply is matched to prevent the light source from spectral drift, and a controller adjusts the power of the light source and the distance between the light source and the sample according to the signal of the ranging sensor. The invention is used for solving the problems of the near infrared detection system that the surface of crops with different sizes is dazzled, specular reflection and unnecessary shadow are detected, ensuring the uniformity of a light source and reducing the interference of spectral noise caused by uneven illumination.

Inventors

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Assignees

  • 山东理工大学

Dates

Publication Date
20260508
Application Date
20241108

Claims (5)

  1. 1. A near infrared light source system for an inclined dome for electric lifting automatic calibration comprises a rack, a control console, a vertical electric lifter and a dome light source.
  2. 2. The tilt dome light source system for motorized lift auto-calibration of claim 1, wherein the frame comprises a plurality of aluminum profile brackets, a front cover plate, a rear cover plate, a side cover plate, a detection table, a top plate, and casters. The aluminum profile brackets are connected through a plurality of cross beams, the front cover plate is provided with an openable front door, the front cover plate, the rear cover plate, the side cover plate, the detection table and the top plate are convenient for putting in and taking out articles to be detected, round holes which are equal to the inner diameter of the grooves of the aluminum profile brackets are formed in the four corners of the front cover plate, the rear cover plate, the side cover plate, the detection table and the top plate, and the aluminum profile brackets are fixedly connected with the aluminum profile brackets through bolts and pins.
  3. 3. The tilt dome light source system for automatic calibration of electric lift of claim 2, wherein the console is coupled to the detection station via a cross bar, and the console is provided with a DC voltage and current regulator and a controller.
  4. 4. The near infrared light source system for an inclined dome for electric lifting automatic calibration according to claim 3, wherein the vertical electric lifter comprises a motor, a coupler, a speed reducer, a connecting block, a sliding rail and a sliding block, wherein the speed reducer is arranged at one end of the sliding rail, the speed reducer is connected with the motor through the coupler, and the movable sliding block is arranged at one side of the sliding rail.
  5. 5. The near infrared light source system for an inclined dome for electric lifting automatic calibration of claim 4, wherein the dome light source comprises a lampshade, a ranging sensor, halogen lamp cups, a connecting column and a sleeve, wherein the halogen lamp cups and the ranging sensor are fixed on the lampshade through bolt connection, an included angle between each halogen lamp cup is 90 degrees, an absolute value of an inclination angle between each halogen lamp cup and a detection table is 60 degrees, one end of the connecting column is fixed with the lampshade through threaded connection, the other end of the connecting column is connected with the sleeve through a pin, and the sleeve is fixed on a sliding block on a vertical electric lifting machine through threaded connection.

Description

Intelligent electric-regulation inclined dome near infrared light source calibration system Technical Field The invention relates to the technical field of near infrared detection and machine vision, in particular to an intelligent electric-control inclined dome near infrared light source calibration system. Background In the near infrared spectrum analysis process, a light source system is an indispensable core component. Current near infrared detection light source devices have a common limitation in that they do not support automatic adjustment of the height of the light source, and it is difficult to maintain a proper distance between the sample and the light source in practical operation. In addition, the conventionally adopted single-point light source structure with vertical arrangement is easy to cause glare, specular reflection effect and shadow problem on the surface of a sample to be detected, and the problems can have adverse effects on the accuracy and reliability of near infrared spectrum measurement results. Disclosure of Invention The invention aims to provide an intelligent electric-control inclined dome near infrared light source calibration system, which solves the problems that in the traditional near infrared spectrum detection, the light source cannot be automatically calibrated and the surface of a sample to be detected is dazzled, specular reflection effect and shadow are generated due to light type discontinuity. The technical scheme of the invention is that the intelligent electric-control inclined dome near-infrared light source calibration system comprises a rack, a console, a vertical electric lifter and a dome light source. The machine frame is characterized by comprising a plurality of aluminum section brackets, a front cover plate, a rear cover plate, a side cover plate, a detection table, a top plate and casters. The aluminum profile bracket is connected through a plurality of crossbeams, the front cover plate is provided with an openable front door, a sample to be tested is convenient to put in and take out, the top plate is provided with rectangular holes, a plurality of round holes are distributed around the holes, the cooling fan is fixed on the top plate through bolt connection, the four corners of the front cover plate, the rear cover plate, the side cover plate, the detection table and the top plate are provided with round holes equal to the inner diameter of the groove of the aluminum profile bracket, and the aluminum profile bracket is fixedly connected with the pin through bolts. One side of the detection table is provided with a control table through a cross bar, and the control table is provided with a light source direct current voltage and current stabilizing power supply and a controller. The vertical electric lifter comprises a motor, a coupler, a speed reducer, a connecting block, a sliding rail and a sliding block, wherein the speed reducer is arranged at one end of the sliding rail and is connected with the motor through the coupler, and the movable sliding block is arranged at one side of the sliding rail. The dome light source comprises a lampshade, a ranging sensor, a halogen lamp cup, a connecting column and a sleeve, wherein the halogen lamp cup and the ranging sensor are fixed on the lampshade through bolt connection, one end of the connecting column is fixed with the lampshade through threaded connection, one end of the connecting column is connected with the sleeve through a pin, and the sleeve is fixed on a sliding block on the vertical electric lifter through threaded connection. As a preferable scheme of the invention, the distance measuring sensor detects the height information of a sample to be detected, and accordingly drives the motor of the vertical electric lifter to work, the speed reducer is connected with the motor through the coupler, and further drives the sliding block on the inner side of the vertical electric lifter, so that the purpose of adjusting the height of the dome light source is achieved, the dome light source is ensured to flexibly adapt to the requirements of different detection occasions, and the optimal relative height configuration between the light source and the sample is realized. As a preferable scheme of the invention, the dome light source halogen lamp cup and the ranging sensor are fixed in the lamp housing through threaded connection. The contained angle between every halogen lamp cup is 90, guarantees that the light source can provide even illumination distribution to irregular sample surface, and halogen lamp cup and detection bench inclination's absolute value is 60 to avoid the surface glare, specular reflection and the unnecessary shadow that produce when detecting the sample that awaits measuring. As a preferable scheme of the invention, the dome light source is arranged on the sleeve which moves horizontally, and the horizontal movement of the dome light source can be realized by adjusting the sleeve, s