What is industrial cameras?

Industrial cameras are applicable to many areas of an intelligent transportation, security mount, HD electronic police system, industrial inspection, semiconductor inspection, PCB inspection, testing, and other food and beverage applications, high-resolution color digital camera. It has transmission speed, color reproduction is good, clear imaging characteristics. Not only can easily capture microscopic images, and can measure the length of the subject, angle, area and other parameters can also print graphic reports. High-resolution industrial digital camera operation is also very simple to install and use.

1 shooting high definition video, color reproduction is good, exposure time, white balance, contrast, brightness, saturation and color, such as multi-parameter control software automatically.

2 installation is simple, through USB2.0 interface, no additional collection devices, plug and play, you can get real-time uncompressed digital video, Akemi operating software interface is simple WYSIWYG image acquisition.

3 with dynamic video capabilities, the compression format is extremely convenient storage.

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Classification of industrial cameras

Industrial camera by an imaging device into electric vacuum pickup device (ie camera tube) camera and solid-state imaging device (CCD devices, CMOS device) camera two categories. Electric vacuum camera tube developed early variety, but the high cost, large volume. Has been replaced by general television monitoring system used solid-state imaging device. The latter is developed a new type of imaging device, and its advantages are: inert, high sensitivity, anti-glare, geometric distortion, uniformity; impact vibration, no sound should be slightly; small and light, life long. Industrial camera is moving small, lightweight, inexpensive technology, and improve image quality, increase operational functions direction. Mainstream industrial CCD camera is based on the basic CMOS photosensitive member and the photosensitive member to points. 

CMOS (Complementary Metal-Oxide Semiconductor, complementary metal oxide semiconductor), the sensitivity of the CMOS sensor is usually in the range of 6 to 15Lux, CMOS sensors have a fixed 10 times higher than the CCD sensor noise, fixed pattern noise always remain on the screen All cameras on a pattern like that is because CMOS sensors 10Lux following basic useless, and therefore a large number of applications are using CCD sensors, CMOS sensors are generally used for very low-end home security. But there are two exceptions, CMOS sensors can be very large and have the same sensitivity and CCD sensors, CMOS sensor is very fast, faster than the CCD sensor 10 to 100 times, making it ideal for special applications such as high ens DSC camera (Cannon D-30) or a high-frame camera. CMOS sensors and controllers are all logic on the same silicon chip blocks, you can make the camera simple and easy to carry, it can be made very small CMOS camera. Although CCD cameras and CMOS cameras energy equal or slightly higher, but a few CMOS sensor chip as CDS, TG and DSP, so the total energy consumption of the same size than the CCD camera decrease of 1/2 to 1/4. Although the CCD that "Charge Coupled Device", and said CMOS "complementary metal oxide semiconductor", but regardless of CCD or CMOS image sensors are not used for real inductive sensor called "semiconductor image", CCD sensor and a CMOS sensor (for the time being so called) are the same kind of sensor "image semiconductors", the image of the semiconductor is a semiconductor PN actual use, able to convert photons of light explosion junction becomes proportional number of electrons. The number of electrons is calculated signal voltage, the more light into the semiconductor image, the more electrons generated from the sensor output voltage is also higher. CCD is called "charge-coupled device," is really just a method of CCD put out electrons from the semiconductor image stored in an organized manner. CMOS called "complementary metal oxide semiconductor", CMOS technology is really just the transistors on a silicon block, no more meaning. CMOS sensors are known only to distinguish the CCD sensor the sensor, regardless of the real image of the sensor processing method. CMOS sensors do not require complicated processing, semiconductor electronic images directly into a voltage signal generated, and therefore very fast. This advantage makes high-frame CMOS sensor camera is very useful for high frame rate can reach 400-2000 / sec.
CCD (Charge Coupled Device, photographic coupling assembly) for the digital camera can record changes in the semiconductor light), is taken through the object lens to focus the image onto the CCD chip, CCD accumulation depending on the intensity of light corresponding to a charge ratio of each pixel accumulation the charge control in the video sequence, by point outward, filtered, after enlarging processing, the formation of the video signal output. Video signal to a monitor or TV's video input terminal can see the original image the same video images. Either monochrome or color camera cameras are CCD electronic scanning itself by the light signals into electrical signals, the photoelectric transformation devices are devices using a CCD, CCD is electrically coupled device (Charge CoupleDevice) for short, and therefore also known as is coupled cameras. It is through the use HYPER HAD (HOLE ACCUMU-LATED DIODE, hole accumulation diode) CCD technology. When the subject light is reflected, transmitted to the lens by the lens is focused on the CCD chip, CCD accumulation according to a charge corresponding to the intensity of light by periodically discharging said electrical signal to produce a picture is, after filtering, amplification, shaping, DSP (digital signal processing) and a series of processing, the output terminal of the camera by a standard composite video signal. The standard video signals with home video recorders, VCD machines, home video camera's video output is the same, so it can be connected to a TV or video viewing. The main camera is coupled to the sensor component CCD, it has a high sensitivity, distortion, long life, anti-vibration, anti-magnetic, small volume, no blur characteristics, it can charge the light changed and the charge storage and transfer , the charge can be removed to save the changes in the voltage, and therefore is an ideal imaging element. Is replaced by a new type of camera tube sensor devices.

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How industrial cameras work?

Resolution selection

Camera resolution of indicators to assess the level of resolution, in units of line pairs, the number that can distinguish between the black and white image pairs. Common resolution monochrome camera is generally 380-600, 380-480 color is, the greater its value, the sharper image. General surveillance occasions, with 400 lines or so black and white camera to meet the requirements; cameras with 600 lines to get a clearer picture. Such products fully meet the medical image processing and other special occasions.

Imaging sensitivity

Often used to indicate the minimum ambient illumination requirements sensitivity of the camera, black and white camera sensitivity is about 0.02-0.5Lux (lux), color camera and more in 1Lux more. 0.1Lux surveillance cameras for ordinary occasions; when used at night or in low light environments, it is recommended to use 0.02Lux camera. When used in conjunction with near-infrared light, must also use low-light cameras.

In addition the sensitivity of the camera and lens are also relevant, 0.97Lux/F0.75 equivalent 2.5Lux/F1.2 equivalent 3.4Lux/F1 reference environment illumination: Summer sun 100000Lux cloudy outdoor 10000Lux television studio 1000Lux from 60W lamps 60cm Desktop 300Lux indoor fluorescent 100Lux indoor 10Lux 20cm evening candlelight at night Streetlights 0.1Lux 10-15Lux

Electronic Shutter

Electronic shutter time between 1/50-1/100000 seconds, the camera's electronic shutter is generally set to automatic electronic shutter mode automatically adjusts the shutter time can dim the brightness according to the environment, to get a clear image. Some cameras allow the user to manually adjust the shutter time to adapt to some special applications.

External synchronization with external trigger

Synchronization means between the external video device using the same type of synchronization signal to ensure synchronization of the video signal, which can guarantee the type of video signal output apparatus having the same frame, the line start and end time. To achieve external synchronization, the camera needs to enter a composite sync signal (C-sync) or composite video signals. External synchronization does not guarantee that users get a complete continuous from the specified time frame image, to achieve this functionality, you must use some special camera with external trigger function.

Spectral response characteristics

CCD devices made of silicon material, is sensitive to the near infrared spectral response can be extended to about 1.0um. Response peak green (550nm), the distribution curve as shown. Covert surveillance at night, you can use the near-infrared light illumination, the human eye is unclear environmental conditions, but on the monitor can be clearly imaged. Since the CCD sensor surface with a layer of transparent electrodes UV absorption, so insensitive to ultraviolet CCD. Red, green, blue three-color filter of the color camera imaging unit, so the color camera for infrared, ultraviolet insensitive.

CCD chip size

CCD imaging commonly used sizes 1/2 ", 1/3" and so on, the size of the smaller volume imaging camera can be made smaller. In the same optical lens, the larger the image size, the larger the field of view. Chip Specification imaging plane size (width X height) diagonal 1/2 6.4x4.8mm 8mm 1/3 4.8x3.6mm 6mm camera lens buying guide on how television monitoring system according to the site being monitored environment, the correct selection of the camera lens is very important because it directly affects the surface to be monitored after the effect of the painting system components on the system to see the end of the monitor system can meet the design requirements (display range or the purpose of the image details), the correct optional camera lens can make the system has been designed to optimize and get a good monitoring results.

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