Planter plate type hole blockage detection system based on laser correlation

A blockage detection and laser directing technology, which is applied in the direction of seeder parts and optical devices to transmit sensing components, etc., can solve the problems of high sphericity, good fluidity, missing seeding, etc., and achieve the effect of improving accuracy and

Inactive Publication Date: 2018-10-16
ANHUI AGRICULTURAL UNIVERSITY
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AI Technical Summary

Problems solved by technology

Due to the small particle size, good fluidity and high sphericity of rapeseed, the hole of the seed meter is blocked, which leads to missed sowing

Method used

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  • Planter plate type hole blockage detection system based on laser correlation
  • Planter plate type hole blockage detection system based on laser correlation
  • Planter plate type hole blockage detection system based on laser correlation

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Embodiment Construction

[0024] Such as figure 1 as shown, figure 1 The present invention proposes a laser beam-based seeding disc hole blockage detection system.

[0025] refer to figure 1 , the present invention proposes a laser-based seeding disc hole blockage detection system, including: a seeding disc, a seeding shaft, a motor driver 2, a motor 3, a transmission mechanism 4, a display unit 7, a laser adjustment unit, and a control unit 1;

[0026] The motor driver 2 is connected with the motor 3 for driving the motor 3 to rotate, and the transmission mechanism 4 is connected with the output shaft of the motor 3 and the seeding shaft respectively, and a photoelectric rotary encoder 5 is fixedly installed on the output shaft of the motor 3, and the photoelectric rotary encoder 5 is used for Gather the rotating speed n of motor 3 output shafts, and display unit 7 is connected with photoelectric rotary encoder 5 to communicate and be used to display the rotating speed of motor 3 output shafts, and...

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Abstract

The invention discloses a planter plate type hole blockage detection system based on laser correlation. A control unit acquires the rotating speed n of the output shaft of a motor through a photoelectric rotary encoder, acquires the output pulses of the photoelectric rotary encoder, and performs smoothing filtering on the rotating speed of the output shaft of the motor and the output pulse of thephotoelectric rotary encoder to obtain the theoretical pulse frequency ft and the time window wi of a planter plate. The control unit controls a motor driver to start to work, and obtains the actual pulse frequency fa of the planter plate in the time window wi based on the change of output level of the output end of the receiving end of a laser sensor, and obtains the blockage hole number xi and the blocking probability p of the planter plate in a unit detection period according to the comparison result of the theoretical pulse frequency ft and the actual pulse frequency fa. The problem of blockage detection of small-particle-diameter precise seeding device type holes is solved. An evaluation basis is provided for evaluating the performance advantages and disadvantages of a pneumatic typeoilseed rape precise seedling device, so that a basis is provided for the improvement design of the pneumatic type oilseed rape precise seedling device.

Description

technical field [0001] The invention relates to the technical field of clogging detection of seed disc holes, in particular to a laser beam-based detection system for clogging of seed disc holes. Background technique [0002] Rapeseed is the oilseed crop with the largest planting area in my country, and its output accounts for more than half of the country's total oilseed output. At present, semi-mechanical or manual sowing of rapeseed is still the main method. Precision live broadcast of rapeseed has the advantages of saving labor, time, cost and efficiency, and is suitable for mechanized harvesting. Carrying out mechanized precision sowing of rapeseed is the sustainable development of China's rapeseed industry. one of the important ways. As the core component of the seeder, the precision seed metering device is the key to evaluating the precision sowing quality of rapeseed. Commonly used precision seed metering devices are divided into mechanical type and pneumatic type....

Claims

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Application Information

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IPC IPC(8): G01D5/32A01C7/20
CPCA01C7/20G01D5/32
Inventor 张甜孙誉宁杨文超李兆东陈黎卿杨洋
Owner ANHUI AGRICULTURAL UNIVERSITY
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