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How to choose a suitable monitoring rod
First, embedded parts
1. During construction, the embedded pipe mouth should be sealed with plastic paper or other materials in advance to prevent concrete from leaking into the embedded pipe when pouring concrete, thus causing the embedded pipe to be blocked. After foundation pouring, the foundation surface must be 5 mm ~ 10 mm above the ground. Concrete must be cured for a period of time to ensure that the concrete can reach a certain installation strength.
2. Each metal monitoring stud must be grounded, and its grounding resistance is less than 4 ohms. The specific data of each stud foundation shall be subject to the needs of site construction.
Second, the intersection manhole
Road monitoring poles generally only require the use of small inspection wells, which should be set near the monitoring poles to facilitate the installation of equipment. When the underground water level is not high, only gravel (sand) cushion will be laid at the bottom of the inspection well, so that water can seep into the ground in rainy days, but there must be concrete foundation cushion under the shaft wall and cement mortar on the shaft wall. When the underground water level is very high, a layer of 10CM concrete cushion should be added to the bottom of the manhole, and waterproof mortar should be painted on the shaft wall and the bottom of the manhole.
Third, the installation location requirements
1, the monitoring pole with 6m cross arm should be selected for general urban roads 1 m, and the monitoring pole with 3-4m height and 0.8m length should be selected for residential areas.
2. The shortest distance between the vertical pole and the monitoring target area shall not be less than 5 meters and the longest distance shall not be greater than 50 meters, so as to ensure that the monitoring screen can contain more valuable information.
3. Where there is a light source nearby, give priority to using the light source, but pay attention to the installation position of the camera in the direction of light.
4. Try to avoid the position of green trees or other obstacles in the vertical pole. If it must be installed, it must avoid the obstruction of trees or other blocking objects and leave room for the future growth of trees.
5. Monitoring poles should try to obtain electricity from traffic police signals, street lamp distribution boxes, governments and large enterprises and institutions, so as to facilitate coordination and improve the stability of electricity consumption. Try to avoid small commercial users, especially civil users.
6. Choose a reasonable cross arm length according to the distance between the vertical pole position and the monitoring target position and the viewing direction, so as to avoid that the cross arm is too short to capture the appropriate monitoring content.
How to choose a suitable monitoring rod
1, with high quality main pole.
Generally speaking, the better monitoring pole is the main pole made of high-quality seamless steel pipe. Such a main pole can have stronger compression resistance. Therefore, when you buy a monitoring pole, you must check the manufacturing material of the main pole of the monitoring pole.
2. There are thick walls.
Generally speaking, a better monitoring pole has a thicker pipe wall, because the thicker pipe wall can make the monitoring pole have better wind resistance and bearing capacity. Therefore, when you buy a monitoring rod, you must know the thickness of the pipe wall.
3. It is characterized by convenient installation.
Generally, a better monitoring rod has the characteristics of flexible installation. Because only if the operation is simpler than the ordinary monitoring lever, can we have a better user experience and thus have stronger competitiveness.
4, according to the camera selection
The selection of monitoring poles should also be based on different camera types. When installing gun cameras, we should try our best to choose a rod with a relatively low height, and usually choose a vertical rod with a height of 3.5-4.5 meters. When installing a spherical camera, we should try to install a relatively high pole. Usually, we choose a monitoring pole between 4.5 meters and 5.5 meters.
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