What is DVR Mini Camera
Dvr, which is called DigitalVideoRecorder in full, is a digital video recorder. Compared with traditional analog video recorders, dvr uses hard disk for recording, so it is often called hard disk recorder, also called DVR. It is a set of computer system for image computing, storage and processing. It has the functions of long-time video recording, recording, remote monitoring and control of images/voice and dynamic frames. DVR integrates five functions, including video recorder, picture splitter, PTZ lens control, alarm control, and network transmission. One device can replace a large number of devices in the analog monitoring system, Moreover, it has gradually gained advantages and popularity in terms of price.
The function of DVR, with the increase of various voltage sensitive loads in the distribution network, puts forward higher requirements for power quality. However, due to system accidents in the power system, the voltage flicker, drop and other disturbances caused by the startup and shutdown of large equipment, lightning stroke and other principles are unavoidable. Moreover, in the current power grid, the ability to quickly restore power supply after power interruption is far from meeting the requirements of many sensitive loads. Therefore, it is necessary to provide users with stable and uninterrupted high-quality power when interference occurs. Dynamic voltage recovery (DVR) is the choice to solve the above problems today. DVR is connected in series to the feeder line that requires high-quality power to realize dynamic real-time voltage compensation for the line, so that the load end can get the desired high-quality power, and ensure the normal and uninterrupted operation of sensitive user equipment.
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The "digitalization" of DVR means that compression and storage technology is aimed at digital signals, rather than directly transmitting digitally encoded video images. Therefore, DVR must be deployed near the analog camera.
How to pruning pepper tree in summer
Ring peeling of Zanthoxylum bungeanum after girdling can significantly enhance flower bud formation. Compared to other fruit trees, Zanthoxylum has a relatively easier time forming flower buds, so a semi-ring girdling method is often used. The optimal time for girdling should not be later than early June. The width of the girdle is generally about 1/6 of the branch or stem diameter. If the tree is vigorous and healthy, the width can be slightly increased, while in weaker conditions, it should be narrowed. It's important to disinfect the cut area to avoid infections. Girdling is most effective on trees with strong vegetative growth that fail to bear fruit consistently. After the first girdling, pepper trees may need to be girdled again every two to three years if their vegetative growth remains strong. However, the number of girdlings should be limited to prevent weakening the tree and shortening its lifespan.
Heart-picking, also known as tip pruning, can be categorized into light and heavy methods based on severity. Light heart-picking involves removing the top 5 cm of shoot tips from May to July. This technique is commonly used on fruit-bearing trees to control excessive vegetative growth and encourage flower bud development. After the initial pruning, many new branches will sprout, and these must be pruned multiple times to achieve the desired effect.
To manage branch direction, you can gently bend the branch from its base and hold it in place to change its angle. This helps open up the branch structure, reduce its growth potential, and promote better flower bud formation. Supporting the branch with stakes or using pulling techniques are simple and effective methods. These approaches are gentle on the tree and cause no damage to the bark. They are particularly useful for smaller branches. For thicker branches that are difficult to manipulate, combining them with vertical training methods can help achieve the desired angle and improve overall tree structure.