| How to choose a road surveillance cameras installed |
| How to choose a road surveillance cameras installed Bayonet road surveillance cameras around the clock to meet the needs of security monitoring , surveillance cameras should have low-light capabilities , in order to lower the evening and nighttime illumination environment can get a clearer video image. Optical via HD-SDI via fiber optic transmission of uncompressed video images , in order to ensure that between high-definition digital surveillance cameras and an array of high-definition image encoding high-definition, low-latency , transmission without attenuation and interference , but also to avoid outdoor surveillance video images affected by lightning . According to the actual needs of the urban road -definition video surveillance , surveillance cameras in the choice may refer to the following suggestions : 1, using CCD sensors. Currently, in CMOS technology is not yet mature , the comparison of two light-sensitive CCD and CMOS chips , CCD sensor sensitivity , resolution, noise control , high-quality image output , dynamic imaging performance is better than CMOS. Especially in the case of urban roads at night with poor lighting conditions , CCD imaging surveillance camera surveillance cameras better than CMOS , it is recommended as a high-definition surveillance cameras CCD photosensitive chip. 2, in order to meet the needs around the clock security monitoring , surveillance cameras should have low-light capabilities , in order to lower the evening and nighttime illumination environment can get a clearer video image. 3 , high-definition video surveillance need to reach 720P/1080P resolution, progressive scan , the highest frame rate should reach 25 frames / sec , in order to ensure smooth flow of surveillance video . 4 , high-definition image transmission interface used in line with broadcasting standard HD-SDI interface that supports uncompressed video between high-speed transmission , high-definition digital surveillance cameras and HD encoding array via HD-SDI Optical, via optical fiber transmission of uncompressed video images to ensure high image resolution, low-latency , transmission without attenuation and interference , but also to avoid outdoor surveillance video images of lightning effects . 5 , high-definition digital surveillance cameras should have high signal to noise ratio , high dynamic range , thus ensuring the quality of the image signal under different circumstances . 6 , with automatic shutter, auto gain, auto white balance and other image pre-processing functions. 7 , auto iris lens, the zoom range can be used with a variety of lenses to achieve different monitor electric range and range requirements . 8 , 485 communication protocol support , surveillance cameras can be remotely upgraded online to change the parameters to meet the special requirements of the application environment . |
