For wireless monitoring, the general weather conditions have little effect on the wireless monitoring transmission, but thunderstorm weather is a weak item of wireless monitoring, which is easily affected by thunderstorms, and the upcoming summer is the season of thunderstorms, therefore, It is necessary to do adequate lightning protection measures at the moment, so how should we operate to effectively prevent lightning? The following small series will introduce the specific measures in detail.
1: Installation problem
We know that the premise of communication between wireless video transmission devices is that two or more devices can communicate with each other. Then the equipment needs to be installed in a higher position outside. We know that if the electronic equipment is installed outdoors, it is necessary to do all kinds of lightning protection measures and grounding.
2: Line problem
The wireless device uses POE power supply, that is, data and power are loaded on the twisted pair cable for simultaneous data transmission. Data is transmitted in 1, 2, 3, and 6. 4, 5 power supply positive, 7, 8 power supply negative. Some customers install wireless devices with high location and long distances through the network cable. In the thunderstorm, the surge and inductive lightning will enter the equipment circuit along with the line. Causes damage to electronic components, reduced sensitivity, and reduced service life.
3: Direct lightning
Direct lightning is a series of destructive effects such as the rapid discharge between the charged cloud layer (Thundercloud) and buildings, other objects, the earth or lightning protection devices, and the electrical, thermal or mechanical forces that accompany it. If the device is subjected to such a lightning strike, the device will suffer an incalculable loss.
4: Static electricity
Electrostatic is a kind of charge that is at rest or a charge that does not flow (the flowing charge forms a current). When the electric charge accumulates on an object or surface, static electricity is formed, and the electric charge is divided into two types: positive electric quantity and negative electric quantity. That is to say, the electrostatic phenomenon is also divided into two types, namely, positive static electricity and negative static electricity. This phenomenon is particularly noticeable in the less north or northwest direction of the dry. This long-term interference with the components of the device will also cause the sensitivity and service life of the electronic components.
So how can we effectively solve the problems that plague us using wireless video transmission equipment? Starting from the following points can prevent or reduce this situation.
A: Installation
Before the installation in the early stage, you should choose the installation location. According to the building requirements, buildings with a height of more than 20 meters or heavy machinery, tower cranes, etc. need to be equipped with lightning rods. The lightning receptors are generally φ16mm round steel with a length of 1~2 meters. The car should be made into a cone tip. The lightning receptor needs to be hot-dip galvanized. When we install the equipment on these objects, install the equipment within 45° of the effective protection angle of the lightning rod. Because the effective protection range of the lightning rod is below 45° of the top of the lightning rod, it can effectively avoid damage caused by direct lightning.
B: POE module lightning protection
The wireless bridge utilizes the POE power supply technology, and the twisted pair transmits data and power at the same time. We recommend professional POE lightning protection technology. The POE lightning protection device can effectively protect the data port and power port of the device from being damaged by surge, inductive lightning and static electricity. However, the POE lightning protection module must be well grounded and the grounding resistance must be less than 4 ohms. If the requirements are not met, the grounding electrode should be added. If the conditions are not good, the electrolyte should be added and/or the soil should be replaced.
In fact, customers have a coordinated response to POE lightning protection measures, but in the spring season, the equipment is affected by surges and other equipment, resulting in equipment damage. Although the POE lightning protection equipment was installed, the POE modules of all the damaged equipment did not carry out any grounding measures. The equipment that has been effectively grounded is no different. Therefore, the POE lightning protection module cannot be effectively grounded or grounded at all. Then lightning protection will not play any role.
The above is a detailed introduction to how lightning protection for thunderstorm weather wireless monitoring. Tengyuan Zhituo has 13 years of experience in R&D and application of wireless mobile video transmission equipment, which will provide you with more detailed knowledge.
Electric Diffuser
What shall we do if the air is dry at home
What if the indoor air is too dry? Learn these methods, you can automatically humidify. Learn quickly, life tips, life tips, life tips
1. Use empty bottles and water cans to contain clean water and put it everywhere in the room. In addition, after cleaning the open glass bottle after daily use, inject clean water and place it in an inconspicuous corner of the room, which is equivalent to adding several small water environments to the room and has an obvious effect on improving the humidity of the room.
2. Fish and green plants.
Raising green plants can urge the room to maintain appropriate humidity, especially ferns, because they can grow healthily under a certain humidity. Watering and often spraying leaves with water are conducive to improving the air humidity in the room.
Large green plants, such as dripping Guanyin and scattered tail sunflower, are themselves an Air Purifier, which can bring a clean and moist atmosphere to the home environment when placed in the room.
3. Increase the frequency of room cleaning. Wipe the ground with a damp mop, humidify it while cleaning, and increase the cleaning frequency to humidify the room several times. Often wipe furniture with a damp cloth can also humidify the room.
4. Dry the washed clothes naturally. The cleaned clothes can omit the drying and drying steps, and can be hung indoors for natural drying, which can effectively increase the humidity of the room.
5. The warm and humid water and gas in the bathroom humidifies the room. After taking a hot bath in winter, the water vapor in the bathroom is thick. At this time, open the bathroom door, the warm and wet water vapor flows to other rooms, and the humidity increases several times in an instant.
6. Humidify the towel on the radiator and put a basin of water under it. Put a wet towel on the heating. The heating has moisture when radiating, which can also increase the air humidity.
7. Often open windows for ventilation. The outdoor air humidity is relatively higher than the indoor air. You can open the window in the morning and afternoon to change the indoor air flow.
8. Use the humidifier aroma diffsuer. Humidifier humidification is one of the commonly used methods of indoor humidification. However, humidifiers need to be regularly cleaned to prevent bacteria in the humidifier from spraying into the air with water spray. They can use Aroma Diffuser, ultrasonic spray, no need to replace STICKER.
