What is AHD? AHD is short for Analog High Definition, so AHD camera is analog high-definition camera, transmission signal is the high-definition analog signal. Talking about high definition, in short, we usually call the video high definition with the physical resolution more than 720p, referred to as HD. AHD technology can achieve the reliable transmission of ultra long distance (500 meters) high-definition video signal on the existing analog transmission line. It adopts advanced Y/C signal separation and simulation filtering technology, which can effectively reduce the color noise in high frequency area, image reducibility is better. Compared with the traditional high definition products, AHD camera image quality has a qualitative leap and upgrade, the highest clarity can be equivalent to the full network HD 1080 level. AHD camera follows the method of simulating standard definition transmission, which can reduce the complexity of construction and deployment, reduce the cost of auxiliary materials and maintain complexity as well as technical requirements of construction personnel. It is extremely suitable for upgrading the old system, you can easily upgrade from standard definition to high definition without change the original system . In addition, high definition quality with standard defintion price, make the AHD camera has a very large development space both in the civilian and industrial market ( such as AHD Car Camera ). front vehicle camera,Vehicle video monitor system,Truck System Solution,Onboard Camera System,Car Security Cameras SHENZHEN SANAN TECHNOLOGY CO.,LTD , https://www.sanan-cctv.com
Winter fruit extermination technology
When fruit trees enter into dormancy in winter, they should actively do a good job of disinfestation in winter. “In addition to an insect in early winter, it is better to kill thousands of insects each year.†This sentence also fully demonstrates that winter is a good time to eliminate pests. 1, lure. Before the winter, tie hay and other objects to the trunk or branches to set up a “comfort nest†for the pests to lure the pests to winter in the grass. Before the pests emerge, the grass should be dismantled and burned at any time. This can eliminate a large number of pests. 2, sweep. Remove the leaves and fallen leaves from the trees, on the ground, and collect them for burning or manure. 3, scraping. With a spatula, the wing skin, split layer and lesions on the branches, insects such as scale insects and red spiders are scraped together to reduce the number of diseased insects. 4, turn. In the early winter, the tree disk will be deeply turned. It will be able to turn diseased leaves, residual fruits, weeds, etc. into the earth as fertilizer. At the same time, it can also turn overwintering pests in the soil to the surface and expose them to the ground, causing them to die or die when they freeze. And deep turning can also promote the ripening of the subsoil and the decomposition of the fertilizer. 5, cut. In combination with the winter shears, the dead branches, dead buds, and dead fruits on the tree were carefully cut off, and the fruit bags, ropes, and other objects in the garden were burned. 6, Tu. The whitening agent on the big tree and main trunk can kill the wintering pests on the branches and can also reduce the daily temperature difference in the stem cortex and prevent the occurrence of frost damage. 7, catch. Using winter time to catch wintering larvae such as moths on trees can reduce pests in the coming year and can be used to feed natural enemies or poultry. 8, spray. In the early spring, when the buds are sprouting, it is the activity of various wintering pests. When spraying 5Be of lime sulfur, it can kill a large number of pathogens and pests.