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Product samples for Shanghai Yanshun Scope Parts & Accessories Co., Ltd. Are exhibited in GMPC of ETW Japan .

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Home » Popular Science

Applications of Industrial Videoscopes
1. Automobile: Detections of engine, oil pressure component, quality and assembly of nozzle.
2. Industrial machinery: Detections of boiler, heat exchanger, mechanical equipment and manufacturing equipment.
3. Petrochemical engineering: Detections of boiler, pipeline, heat exchanger and other devices.
4. Electronic and electrical industries: Detections of component, mechanical movement, and R&D field.
5. Coal gas: Check if rust, corrosion or water exists in the pipe, or the exhaust pipe is damaged.
6. Aviation and aerospace: Periodical inspections of turbine, vane, aircraft body and combustion chamber, and research, development and production of rocket engine.
7. Steel: Maintenance of equipment, and quality inspection of steel tube product.
8. Railway and ship: Inspection of turbine, heater, diesel engine, boiler flame and pipe.
9. Constructional engineering: Check the interior of wall, rebar rust condition, flaw in the bridge joint, rust and dust in the steel pipe, etc. Also, it can be used to observe building model, and cavity on the inner side of tunnel.
10. Public security: Customs and public security department can take advantage of videoscope to determine the hidden drugs and smuggled goods.
11. Tap water pipe: Acquire detailed information of rust and blocking problem in the drain pipe.
12. Electric power: Detection and maintenance of various pipes, turbines, heat exchangers and others in the nuclear power plant, thermal power station and hydraulic power station.
13. Archaeology: Observation of Buddha statue and inner space of ancient tomb, etc.

Preparation before Using Industrial Videoscopes
Before use, please read the operating instruction and make sure that the following items are in normal state: insertion tube, bending operation, imaging condition and lighting fiber.

Actions when Image Is Dim
1. Check if the lighting switch of optical fiber is on.
2. Make sure that the protective film on the LCD is removed.
3. Confirm that whether the camera system needs to be set at dark mode.
4. Whether the battery needs to be charged.

Actions when Image Is Twisted or Abnormal
1. Check the battery.
2. The working temperature of camera should be within -20℃~70℃, and please check the ambient temperature.
3. Restart the videoscope.

Differences between CCD and CMOS Used for Industrial Videoscopes
Depending on the working principle, CCD offers better image quality, but the production technique is very complicated which is monopolized by Japanese manufacturers. Usually, industrial videoscope uses 1/6-inch and 1/10-inch CCD, and they are very expensive.

On the other hand, if CMOS and CCD share the same resolution, CMOS sensor is much cheaper than CCD sensor, and the power consumption is also lower. Meanwhile, CMOS can be highly integrated with circuit, and it can combine ADC with signal processor as well, so the volume is reduced greatly. But the image quality of CMOS is not as good as CCD, and the reduction of noise is also a very important task for CMOS.

Now, CCD sensor is applied by medical videoscope and high-end industrial videoscope. CMOS sensor is used as the low-end product, and is adopted by normal and low-end industrial videoscope and medical laryngoscope. At present, the size of CMOS can be as small as 1.8×1.8mm, and the 2.8mm ultra thin videoscope produced by Yanshun is the typical application.

CMOS has many great features, such as low cost, fast speed and easy for mass production, and it is the future of camera sensor. Due to the intrinsic properties of CMOS, large CMOS sensor with high pixel count can be produced while the cost won't increase greatly. As the core component of digital camera, CMOS sensor has gradually shown the trend of replacing CCD sensor.

Yanshun Videoscopes
The design of industrial videoscope needs to be developed along with the development of science and technology, but it also changes according to the requirements of customers. Shanghai Yanshun Scope Parts & Accessories Co., Ltd. is specialized in the research, development and production of normal and high-end industrial videoscopes. This portable device takes advantage of electronic, optic and mechanical techniques, and it is a combination of probe, LCD, battery and storage. Our HV series industrial videoscope has an ultra small outer diameter, only 2.8mm, and the articulation angle is 2-way type. Meanwhile, it has small size, and allows single hand operation. It can execute detection and recording at the same time, and user can view the video repeatedly on site. In addition, if user is not satisfied with the video, he can delete it and record again. PV series adopts 5-inch HD LCD, and the image can be displayed on the monitor directly, and the operation is simple and convenient. PV series product is mainly applied for equipment detections, and it can reveal the true conditions of flaw, corrosion, foreign object and other abnormal phenomena that may damage the equipment.

GE Industrial Videoscopes Technical Progress - from Simple Detection to 3D Phase Measurement
Due to the digital data stream and enhanced high power optic lighting technique, the image quality of electronic videoscope is improved greatly. Especially with the increase of image sensor resolution and development of back-end image processing function, the displayed image is much clearer. For example, 1080P high definition videoscope produced by Yanshun has a high image resolution of 1280×1080, and the total pixel count reaches 2 million which can detect the subtle defect of component. Meanwhile, Yanshun also manufactures focus adjustable industrial videoscope, and it allows easy adjustment of focal length. It can automatically adjust the lens, and the back-end high speed DSP is able to automatically control the image parameters. Thus, the focus can be set at the desired position, and the image can be very clear, so the user can get more details.

Nowadays, electronic videoscope is widely used in aerospace industry, and it is suitable for the detections of engine, aircraft body and auxiliary power unit. These checking items are part of the scheduled maintenance. In addition, the videoscope is also applied by original manufacturer for the production of engine.

Here is the brief history of videoscope.
1. Industrial videoscope originated from medical industry, and it was invented in 1806 by Austrians for the detection of human vessel and body cavity.
2. After the Second World War, industrial videoscope came into the age of fast development. The early version was composed of lens and lighting source, and they were linked to an optical transmission expander, namely ocular lens. This basic version of videoscope can't carry out measurement, and it can just be used for visual check.
3. Not until 1960s could the industrial videoscope capture image and carry out measurement. Ocular lens was equipped to camera. Also, optical fiber was introduced, and the video camera became the first choice for picking up image. With the development of computing power, videoscope can save and store video in digital format. In addition, information sharing function is the unique feature of the latest generation of electronic industrial videoscope.

NDT – Electronic Videoscope for Marine Engine
In order to avoid disassembling engine, electronic industrial videoscope is becoming more and more popular in the detections of inner space of marine engine. This method takes optical fiber as the lighting source, and rigid tube, photographic equipment and others are also used. The videoscope can detect the inner surface of marine engine through the access hole which is set on the engine, and the inspection components include turbine engine (fan, gear case, oil tank, combustion cylinder and turbine blade of compressor), diesel engine (crank case, piston rod, combustion chamber and inner space of turbocharger), and other places that hard to be seen by human directly. The checking items mainly contain damage, corrosion, vulcanization, abrasion, flaw and contaminant of the machine parts.

The following factors need to be taken into account when the videoscope is applied for detection.
1. Size and position of access hole.
2. Approach path to the target place.
3. Distance between objective lens and target object.
4. Defect size.
5. Profile and size of target object.

Videoscope is very important for the maintenance and repair of marine engine, especially for the detections of engine. It can improve the inspection capability and efficiency, and the charge for detection and maintenance is cut down to a large extent. Meanwhile, it can greatly enhance the task performance and readiness rate of ships.