News
News

15

2021

-

09

What is the position of machine vision system in automation?

所属分类:


【概要描述】In automatic production, machine vision system detection is very important, because machine vision detection can replace manual inspection and realize automatic inspection. What is the position of machine vision system detection in the entire automation industry? In modern industrial automation production, it involves various inspection, measurement and part identification applications. For example, the size inspection of auto parts and the automatic assembly integrity inspection, the electronic assembly line component positioning, the beverage bottle cap printing quality inspection, and the bar code and character recognition on the product packaging. The common characteristics of these applications are continuous batch production and high requirements for appearance quality. Usually, this highly repetitive and intelligent work is done by the naked eye, but in some special cases, such as accurate and rapid measurement of small size, shape matching and color recognition, the naked eye can not maintain stability at all, and other physical quantity sensors can not be implemented. With the intensification of industry competition, the company's control of product quality is not even allowed to have a 0.1% defect, Therefore, it is necessary to ensure 100% inspection qualification rate (i.e. "zero defect") to ensure the continuous and stable growth of products. Therefore, people began to consider using CCD cameras to capture images and send them to computers or special image processing modules. Through digital processing, the size, shape, color, etc. were determined according to pixel distribution, brightness, color and other information. This method combined the rapidity and repeatability of computer processing with the high intelligence and abstract ability of naked eye vision, thus forming the concept of machine vision detection technology. Machine vision system inspection technology is a new testing technology based on computer vision research. Different from the visual pattern recognition and visual understanding of computer vision research, visual inspection technology focuses on the measurement of object geometric size and position, such as the three-dimensional dimension of the white body, rapid measurement of the three-dimensional shape of the mold, etc., the coaxiality measurement and coplanarity measurement of large workpiece. In addition, The inspection system of machine vision technology can also automatically detect the entire product, which is also very important for controlling product quality and ensuring product quality. With the needs of market development in various industries, in order to better base on the market and enhance the competitiveness of enterprises, more and more enterprises are focusing on the continuous introduction of high-tech. In today's increasingly progressive industrial automation, machine vision technology is also increasingly widely used in the industry, and is increasingly recognized and favored by users.

In automatic production, machine vision system detection is very important, because machine vision detection can replace manual inspection and realize automatic inspection. What is the position of machine vision system detection in the entire automation industry?
In modern industrial automation production, it involves various inspection, measurement and part identification applications. For example, the size inspection of auto parts and the automatic assembly integrity inspection, the electronic assembly line component positioning, the beverage bottle cap printing quality inspection, and the bar code and character recognition on the product packaging. The common characteristics of these applications are continuous batch production and high requirements for appearance quality.
Usually, this highly repetitive and intelligent work is done by the naked eye, but in some special cases, such as accurate and rapid measurement of small size, shape matching and color recognition, the naked eye can not maintain stability at all, and other physical quantity sensors can not be implemented. With the intensification of industry competition, the company's control of product quality is not even allowed to have a 0.1% defect, Therefore, it is necessary to ensure 100% inspection qualification rate (i.e. "zero defect") to ensure the continuous and stable growth of products.
Therefore, people began to consider using CCD cameras to capture images and send them to computers or special image processing modules. Through digital processing, the size, shape, color, etc. were determined according to pixel distribution, brightness, color and other information. This method combined the rapidity and repeatability of computer processing with the high intelligence and abstract ability of naked eye vision, thus forming the concept of machine vision detection technology.
Machine vision system inspection technology is a new testing technology based on computer vision research. Different from the visual pattern recognition and visual understanding of computer vision research, visual inspection technology focuses on the measurement of object geometric size and position, such as the three-dimensional dimension of the white body, rapid measurement of the three-dimensional shape of the mold, etc., the coaxiality measurement and coplanarity measurement of large workpiece. In addition, The inspection system of machine vision technology can also automatically detect the entire product, which is also very important for controlling product quality and ensuring product quality.
With the needs of market development in various industries, in order to better base on the market and enhance the competitiveness of enterprises, more and more enterprises are focusing on the continuous introduction of high-tech. In today's increasingly progressive industrial automation, machine vision technology is also increasingly widely used in the industry, and is increasingly recognized and favored by users.


BARTEC explosion-proof switch-Germany BARTEC limit type micro switch/travel switch

BARTEC explosion-proof switches are special-purpose switches developed by the renowned German company BARTEC, which was founded in 1975 in Baden-Württemberg.

MORE +

Comparison between optical fiber sensor and traditional sensor

At present, in the Chinese market, fiber Bragg grating (equipped with ASE broadband light source) and distributed sensor based on optical time-domain reflection are the most widely used optical fiber sensing technologies. This technology can basically meet the needs of the medium and low end general market and is well known by industry insiders. The single-frequency fiber laser with spectral linewidth as narrow as 2 kHz and the latest generation of optical sensing technology introduced now are completely different from the optical fiber sensing we now know. This new technical solution can fully meet the higher demand for ultra-long distance, ultra-high precision and ultra-high sensitivity in the high-end market, which cannot be completed by electric sensing and general optical fiber sensing. However, this technology is still in the stage of project approval and pre-research in China. Compared with traditional sensing technology, fiber-based sensors have the following major advantages: 1. Light weight, compact structure, easy to reuse in multiple ways; 2. Resistance to harsh environment, electromagnetic interference and chemical corrosion; 3. There is no need for electricity at the sensing point, and long-distance distributed sensing is possible; 4. Low cost mass production After optical fiber communication, optical fiber sensing has also ushered in an important development opportunity. It has extensive and huge application value in security, military, oil/gas, electricity and scientific research, especially in western developed countries. The optical principle of single-frequency fiber laser for optical sensing is optical frequency time-domain reflection.

MORE +

Structure principle and classification of optical fiber sensor

1. Structure principle of optical fiber sensor The traditional sensor based on electricity is a device that converts the measured state into measurable electrical signals. Its power supply, sensitive components, signal receiving and processing system and information transmission are all connected with metal wires. Optical fiber sensor is a device that converts the measured state into a measurable optical signal. It is composed of optical transmitter, sensing element (optical fiber or non-optical fiber), optical receiver, signal processing system and optical fiber. The light emitted by the optical transmitter is guided to the sensitive element through the source optical fiber. At this time, a certain property of the light is modulated by the measured, and the modulated light is coupled to the optical receiver through the receiving fiber, so that the optical signal is converted into an electrical signal, and finally the desired measured signal is obtained through signal processing. It can be seen that the optical fiber sensor is essentially different from the traditional sensor based on electricity in measuring principle. Traditional sensors are based on mechanical-electrical measurement, while optical fiber sensors are based on optical measurement. Light is a kind of electromagnetic wave, whose wavelength ranges from 1 mm in the far infrared to 10 nm in the far ultraviolet. Its physical and biochemical effects are mainly caused by the electric field. Therefore, when discussing the sensitive measurement of light, we must consider the vibration of the electric vector E of light, namely A - amplitude vector of electric field E; ω—— Vibration frequency of light wave; φ—— Optical phase; T - propagation time of light. It can be seen that as long as one of the parameters such as the intensity, polarization state (direction of vector A), frequency and phase of the light changes with the change of the measured state, or is modulated by the measured state, then the required measured information can be obtained by adjusting the intensity modulation, polarization modulation, frequency modulation or phase modulation of the light. 2. Classification of optical fiber sensors Note: MM multimode; SM single mode; PM polarization maintenance; a. B, c functional type, non-functional type, pickup type

MORE +

The exhibition of the first Fuji Electric Import Expo ended smoothly

The China International Import Expo is a major measure taken by the Chinese government to firmly support trade liberalization and economic globalization and actively open its market to the world. The exhibition covers seven major industries, including service trade, automobile, high intelligent high-end equipment, consumer electrical machinery and equipment. Fuji Electric Co., Ltd. also participated in the exhibition. With the theme of energy and environment business, in the 108 square meters, blue and white Fuji Electric Exhibition Hall, energy optimization and stabilization were carried out; Achieve stable operation and energy-saving effect of the plant; Environmental measurement of air pollution, etc., to the optimal operation of equipment; It also saves labor and people, and provides four displays of food safety and reassurance.

MORE +

琦威(香港)有限公司

Kiwell (Hongkong) Co., Ltd.

Add:  Workshop Unit No. A6, 8/F, Hoplite Industrial Centre, No. 3 & 5 Wang Tai Road, Kowloon Bay, Kowloon, Hongkong

Tel:852 3171 1488  

Fax:852 3111 6959

佛山市琦威电气技术有限公司

Kiwell (Foshan) Electric Technology Co., Ltd.

Add :  Floor 3,Block 5,No.23,Xinghua Road,

           Zhangcha Street,Foshan Clty,Guangdong Province

Tel :   0757-83276620    13827717320 

Fax :  0757-83992196

Mailbox: info@kiwell.cn

 

img

WeChat Offical Account