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New Year's Day | Happiness is a "yuan" that never ends; When troubles are all over, punish it to stand aside.

Best wishes from Qiwei Electric Happy New Year's Day! Time flies, and it's the end of the year and the beginning of the year 2020 is an unusual year Nervous, flustered, moved, warm Fortunately, the bustling human fireworks market daily After a long separation, we will meet again And those who should be remembered for their heroism and dedication Moved and sighed that should be treasured Will cocoon in time and gradually become immortal and legendary It's like wine brewed with time Every drop is a sweet and moving story Welcome New Year's Day and go to the New Year Goodbye 2020, hello 2021 Four seasons, spring, summer, autumn and winter Wish you all the best in the new year!

2023

01-06

Build a dream for the future| In 2021, Qiwei Electric Relay will build a dream and create another brilliant future!

The years have changed, and the four seasons have come back. The beauty of 2020 has not yet disappeared, and 2021 has quietly arrived. On January 27, 2021, our company held the 2020 year-end conference and the Spring Festival dinner.

2023

01-06

The most beautiful goddess festival met in early spring

Every woman has a different identity Wife, take care of the family affairs Mother, give children warm care ... Today, you should be yourself Be your own queen Not servile, not overbearing, not in a hurry Happinessto all the goddesses of Qiwei Electric The company has prepared it for you Goddess exclusive gift + Goddess exclusive flower ceremony! I hope you goddesses can have a happy holiday!

2023

01-06

Application of ultrasonic sensor

The main materials of ultrasonic sensor include piezoelectric crystal (electrostrictive) and nickel iron aluminum alloy (magnetostrictive). The electrostrictive materials include lead zirconate titanate (PZT), etc. The ultrasonic sensor composed of piezoelectric crystal is a reversible sensor, which can convert electrical energy into mechanical vibration to generate ultrasonic, and when it receives ultrasonic, it can also convert into electrical energy, so it can be divided into transmitter or receiver. In real life, it is not difficult to find the application of ultrasonic sensors. With the rapid development of science and technology, the scope of application of ultrasonic sensors has become more and more extensive. In the history of human development, the application of ultrasonic sensors is everywhere, as long as the human can imagine, it can step in. The discovery of hybrid rice has greatly shortened the distance between China and other countries and injected vitality into China's economy. Ultrasonic sensors are so widely used. Do you really know its principle and application range? Ultrasonic sensor is developed by using the characteristics of ultrasonic wave. Ultrasonic wave is a mechanical wave whose vibration frequency is higher than that of sound wave. It is generated by the vibration of the energy exchange chip under the excitation of voltage. It has the characteristics of high frequency, short wavelength, small diffraction phenomenon, especially good directionality, and can be transmitted directionally as a ray. Ultrasound has great penetrating power for liquids and solids, especially in sunless solids, which can penetrate tens of meters deep. Ultrasound will reflect when it encounters impurities or interfaces to form echo, and it will generate Doppler effect when it encounters moving objects. Therefore, ultrasonic testing is widely used in industry, national defense, biomedicine and other fields.

2023

01-06

Test method of ultrasonic sensor

As a detection device, the ultrasonic sensor can not only sense the measured information, but also transform the detected information into electrical signals according to certain rules, or other required forms of information output. However, the output signal of the sensor should be easy to transmit, process, store, display, record and control information. With the development of electronic and microelectronic technology, the development of the sensor is also changing with each passing day. There are more and more applications and types of sensors in production and life. For example, wireless sensor, radar sensor, infrared light temperature sensor, geomagnetic object detection sensor, etc. Ultrasonic sensor is one of the most widely used sensors. Ultrasonic sensor uses the characteristics of ultrasonic technology for sensing. The application of sensor detection based on the volume, material, and movability of the detected object includes: whether there is detection: whether the object is detected/in place/count; Color detection: detect the color/concentration of objects; Dimension measurement: length/width/height/thickness/temperature/distance; Deviation correction inspection: appearance inspection. However, the ultrasonic sensor adopts different detection methods. The common detection methods are as follows: Penetrating type: the transmitter and receiver are located on both sides respectively. When the detected object passes between them, it will be detected according to the attenuation or occlusion of the ultrasonic wave. Limited distance type: the transmitter and receiver are located on the same side. When there is a detected object passing within the limited distance, the detection is carried out according to the reflected ultrasonic wave. Regression reflection type: the transmitter and receiver are located on the same side, and the detection object is taken as the reflection surface, and the detection is carried out according to the attenuation of the reflected wave. Limited range type: the transmitter and receiver are located at the center of the limited range, the reflector is located at the edge of the limited range, and the attenuation value of the reflected wave when there is no object to be detected is taken as the reference value. When there is an object to be detected in the limited range, the attenuation value is compared with the reference value according to the attenuation condition of the reflected wave for detection.

2023

01-06

Ultrasonic sensor is the choice for short distance application

Ultrasound refers to signals that are beyond the range of human hearing, usually in the range of 40 to 70 kHz. These signals are used like radar. They will radiate to the target and reflect back to the source. They are cheap, flexible, and especially suitable for short-range applications, especially the design of automobiles, home and industrial robots. Ultrasonic sensors are sometimes used in combination with microwave/millimeter wave radars and cameras to provide different but complementary views of the surrounding environment in automotive and industrial applications. If you are looking for a sensor that can not only detect the presence of the target, but also tell you how far the target is, then ultrasound may be your ideal choice. Ultrasonic signal refers to the signal above the human hearing range, about 30 to 480 kHz. For ultrasonic sensing, the most widely used range is 40 to 70 kHz. Frequency determines the range and resolution; Lower frequencies produce the maximum sensing range. The common frequency is 58 kHz, the measurement resolution is 1 cm, and the maximum range is 11 meters. At 300 kHz, the resolution may be as low as 1 mm, but the maximum distance of this frequency range is about 30 cm. The ultrasonic transceiver radiates the signal through the piezoelectric transducer. When the signal hits the target, it will generate a reflection signal. The signal is received at the transceiver. The transceiver measures the time of transmission and return, and then calculates the distance using the sound velocity in the air. The sound speed in free space is 1120, which varies with temperature and other surrounding factors, but it is a good average value for range calculation. Ultrasonic technology has entered a wide range of applications. The largest areas may be proximity detection and distance measurement. Other include liquid level detection in tanks, flow measurement systems and imaging products. Most of the newer applications are for consumer electronics, Automotive and industrial/robotics.

2023

01-06

Application of area sensor

The area sensor refers to the device or device that can sense (or respond) the specified measured signal and convert it into usable signal output according to certain rules. The sensor is usually composed of the sensitive element directly responding to the measured signal, the conversion element that generates usable signal output, and the corresponding electronic circuit. The sensor that can collect the area signal is called the area sensor. The principle of the area sensor, commonly known as "light curtain" or "grating", is similar to that of the photo-electric sensor of the opposite type. It is detected by detecting the optical axis between the transmitter and receiver of the opposite object. The difference is that the photoelectric sensor can detect the presence or absence of an object at a certain point, while the area sensor can detect the object in a plane area. If ordinary photoelectric sensors are used to detect the presence or absence of objects within a certain area, the required number of photoelectric sensors need to be installed in parallel. Obviously, the installation and adjustment of area sensors is much more convenient than that of installing the optical axes of many photoelectric sensors in the same plane. Regional sensors can be widely used in: food and beverage, packaging, electronic components and equipment, warehousing, machine tool industry, metal parts processing industry, logistics express sorting line and other automated production lines. In addition, the solid aluminum alloy shell and IP67 protection grade can calmly cope with various harsh environments such as moisture, oil, dust and so on. Foshan Qiwei Electric Technology Co., Ltd. is a high-tech enterprise integrating sales, technical services, engineering and research and development. It provides automation engineering technical services and complete solutions, and also provides intelligent manufacturing and digital chemical plant solutions, realizing the "one-stop" service of industrial control automation.

2023

01-06

How to use the proximity switch?

Proximity switch refers to the position switch that can make the switch move without mechanical contact and pressure when the object approaches the sensing surface of the switch to the action distance, thus driving AC or DC electrical appliances or computer equipment to make the switch move. Proximity switch is a switch type sensor (i.e. contactless switch), which has the characteristics of travel switch and microswitch, and has the sensing performance, reliable action, stable performance, and fast frequency response, It features long service life, strong anti-interference ability, and has the advantages of waterproof, shockproof, corrosion resistance, etc. The main products are inductive, capacitive, Hall, AC and DC. Proximity switch, also known as near contactless switch, is an ideal electronic switch sensor. When the metal detector approaches the sensing area of the switch, the switch can be contactless, pressureless, and spark-free. It can quickly send out electronic instructions and accurately respond to the position and travel of the action mechanism. That is, it is used for ordinary travel control, with its positioning accuracy, operating frequency, service life, installation and adjustment convenience, and the ability to adapt to harsh environment, Compared with general mechanical travel switch, it is incomparable. Proximity switch is widely used in machine tool, metallurgy, chemical industry, light textile, printing and other industries. The system can be used as limiting, counting, positioning control, automatic protection and other links. The proximity switch has the advantages of long service life, reliable operation, high precision of repeated positioning, no mechanical wear, no spark, no noise, and strong anti-vibration ability. So far, the application range of proximity switch is becoming wider and wider, and its development and innovation speed is also very fast.

2023

01-06

How to select photoelectric switch?

Photoelectric switch is a kind of sensor, which converts the change of light intensity between the transmitting end and the receiving end into the change of current to achieve the purpose of detection. Photoelectric sensor adopts integrated circuit technology and SMT surface mounting technology to manufacture a new generation of photoelectric switch device, which has intelligent functions such as delay, broadening, external synchronization, mutual interference resistance, high reliability, stability of working area and self-diagnosis, This novel photoelectric switch is an active photoelectric detection system-type electronic switch using pulse modulation. The cold light sources used include infrared light, red light, green light, blue light, etc. It can quickly and control the state and action of various solids, liquids, transparent bodies, black bodies, soft software, smoke and other substances without contact and damage. Let's take a look at how to select photoelectric switch: Photoelectric switches have been applied in many fields, such as level detection, liquid level control, product counting, width discrimination, speed detection, fixed length shearing, hole recognition, signal delay, automatic door sensing, color code detection, punch and shearing machine, and security protection. In addition, the use of the concealment of infrared ray can also be used as anti-theft warning in banks, warehouses, stores, offices and other necessary occasions. The photoelectric switch is simple, small and durable. Foshan Qiwei Electric Technology Co., Ltd. is a high-tech enterprise integrating sales, technical services, engineering and research and development. Based on years of industry experience, the company strives for change and progress, and provides automatic engineering technical services and complete solutions, as well as intelligent manufacturing and digital chemical plant solutions, realizing the "one-stop" service of industrial control automation.

2023

01-06

What is the position of machine vision system in automation?

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.

2023

01-06

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琦威(香港)有限公司

Kiwell (Hongkong) Co., Ltd.

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佛山市琦威电气技术有限公司

Kiwell (Foshan) Electric Technology Co., Ltd.

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