How to deal with the moisture in the surveillance camera

In terms of concept, the aperture was a device in the surveillance camera that controlled the light passing through the lens and adjusted the light sensitivity inside the camera. In terms of structure, it was controlled by the amount of light passing through the lens. Usually, the F-value was used to express the size of the aperture. In daily life, 1.0, 1.2, or 1.4 would be used to represent the aperture size of the lens. When the F-value was smaller, the larger the aperture was, and the more light the sensor chip could pass through. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>

There were surveillance cameras at the entrance of some residential areas for different purposes. For example, in order to control the phenomenon of random parking of vehicles, high-definition surveillance cameras were installed on the north and south sides of the east entrance of Xingtai International New City to record illegal parking and other behaviors; in order to record vehicles that violated one-way traffic, such as the vehicle bayonet monitoring at the entrance of Mu 'an Community on Changyun Road; In order to regulate the traffic order at the entrance of some districts, such as the north gate of Mindu Elegant Garden, surveillance cameras were installed to capture the situation of vehicles not leaving for a long time. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>

Yes. Sky-eye surveillance cameras had been installed on the roads of many cities to capture traffic violation, including illegal parking. For example, taxi parking could be captured by surveillance cameras and then fined by the traffic police. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>

The dedicated traffic card for surveillance cameras was an Internet of Things data communication card designed for surveillance cameras. It was more cost-effective than traditional data cards. It could choose the appropriate data package according to the scene and functional requirements of the surveillance camera, thereby reducing costs. This kind of data card could break through the limitations of traditional data cards. According to the specific usage of the equipment and the environment, the appropriate data package could be selected to effectively control the cost. In addition, the fee for the dedicated data card for surveillance cameras was relatively low. There were more types of data cards than ordinary data cards, which could effectively reduce the cost of use and avoid wasting network costs. Therefore, choosing a dedicated traffic card for surveillance cameras could meet the needs of surveillance scenes, reduce costs, and improve the use effect.

There was a difference in the size of the surveillance cameras. Different sized lenses had different viewing angles and distances. Generally speaking, the smaller the millimeter of the lens, the larger the angle of the surveillance picture, but the clearer the distance. On the contrary, the larger the millimeter of the lens, the smaller the angle of the surveillance picture, and the clearer the distance. For example, the 2.8mm focal length lens has a large viewing angle, suitable for monitoring small spaces such as storage rooms within 3 meters; 4mm can be used for indoor environments such as living rooms and small shops; 6mm is suitable for small shops or doorways of 5 - 10m; 8mm is best for outdoor roads and alleys of 10 - 20m; 12mm is mainly used for specific locations such as entrances and exits of about 20 - 30m. In addition, from the relationship between angle and distance, the larger the angle, the closer the distance. For example, the 3.6mm lens was 67.4 degrees, and the distance was 15 meters; the 6mm lens was 42.3 degrees, and the distance was 20 meters; the 8mm lens was 32.6 degrees, and the distance was 25 meters; the 12mm lens was 22.1 degrees, and the distance was 40 meters; and the 16mm lens was 17.1 degrees, and the distance was 60 meters. The common surveillance camera lenses on the market were arranged according to the size of the frame: 2.8mm, 3.6mm, 4mm, 6mm, 8mm, 12mm, 16mm, 24mm, etc. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>

Under normal circumstances, if there was no right-turn signal at the intersection, the right-turn vehicle did not need to look at the signal light and would usually not be photographed by the electronic police. However, if you turn right under the following circumstances, you will be photographed by the surveillance camera: 1. The intersection signal light had a right turn indicator light, and when turning right, the red light (such as the arrow-shaped right turn sign, turning right when the red light was lit) would be photographed. The electronic eye would take three photos (instant violation image, license plate recognition image, panoramic image) for capture. The shooting was continuous for 24 hours, and the image was usually retained for a week. 2. In some places, surveillance cameras were added, such as the intersection of Taiyang Lake Road and Guangchuan Avenue, Tianqu East Road and Chongde First Avenue, etc. If large vehicles turned right without stopping (driving a motor vehicle in violation of the prohibition sign), they would be captured. 3. When the circular traffic light at the intersection turned red, if there was a reminder above the traffic light that said,"Don't turn right at the red light," turning right at this time would be considered a violation of the regulations, and surveillance equipment would also be captured. 4. In order to prevent traffic accidents caused by right-turning vehicles not giving way according to law, some places use traffic monitoring systems to capture illegal actions such as right-turning vehicles disobeying pedestrians. For example, since February 26,2024, Yueqing City has used the traffic monitoring system to capture vehicles turning right disobeying pedestrians; Since February 7,2024, Zoucheng City has carried out special regulation on traffic illegal behaviors such as non-motor vehicles and pedestrians who turn right without stopping and use the monitoring system to capture photos. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>

The basic parameters of the surveillance camera were as follows: 1. ** focal length **: The distance between the lens and the sensor. By changing the focal length, one could change the lens's magnification and the size of the captured image. When the distance between the object and the lens is very far, the lens's amplification factor equals to focal length/object distance. The larger the focal length, the larger the magnification, and the closer the distant view, the smaller the image range, and the clearer the details of the distant view. 2. ** Field of view **: In engineering practice, the horizontal field of view is often used to reflect the shooting range of the image. The larger the focal length f, the smaller the field of view, and the smaller the range of the image formed on the light-sensitive element. Conversely, the smaller the focal length f, the larger the field of view, and the larger the range of the image formed on the light-sensitive element. 3. ** Aperture **: Mounted at the back of the lens. The larger the aperture, the greater the amount of light passing through the lens, and the higher the image clarity; the smaller the aperture, the smaller the amount of light passing through the lens, and the lower the image clarity. It is usually expressed as F (luminous flux), where F = focal length (f)/aperture. In the case of the same focal length f, the smaller the F value, the larger the aperture, the greater the luminous flux reaching the CCD-chip, and the better the lens. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>

At present, most hospitals 'intensive care units (ICU) were not equipped with monitoring equipment, such as the respiratory intensive care unit of the Central Hospital affiliated to Zhengzhou University and many provincial hospitals. Although there was a special case where the ICU of the Heart Center of the Women's and Children's Hospital in Shandong Province installed a camera in each bed in 2011, it was generally difficult to monitor the internal situation of the ICU. Moreover, he had not found any policy documents regarding the need to install surveillance cameras in the ICU. Therefore, in most cases, there were no surveillance cameras in the ICU. "The Island of Life" is also a wonderful novel. Everyone is welcome to read it!

At present, there was no scientific evidence to prove that ghosts really existed. The so-called " ghosts " seen in surveillance could often be explained by science or other reasonable explanations. For example, in Material 3, the British woman thought that the surveillance camera had captured a ghost, but some netizens in the news comment section pointed out that it might just be dust. In Material 5, the hotel surveillance video seemed to have captured a supernatural phenomenon, but after analysis, there were many doubts in the video, such as the contradiction between the audio and the image, the unreasonable number of surveillance cameras, and the illogical recording of screams. Some seemingly supernatural surveillance images might be caused by equipment malfunction, shooting angle, lighting effects, or human misunderstandings or pranks. While waiting for the TV series, you can also click on the link below to read the classic original work of "Dafeng Nightwatchman"!

The monitor lens was mainly used to reflect the outdoor surveillance scene on a flat surface. It was responsible for the on-site video signal collection and was the original signal source of the entire video image management system. According to different categories, they were used: 1. ** Focus ** - Short focal length (usually below 28mm, that is, wide-angle lens): suitable for situations with poor environmental lighting conditions and wide monitoring range. - Medium focal length (focal length similar to the image size): suitable for specific indoor or outdoor scenes, effective monitoring of targets. - Telephoto (150mm or above, that is, telescope head): used to monitor distant objects. 2. ** Aperture ** - Manual aperture lens: suitable for relatively stable lighting conditions. It is composed of several metal sheets. The luminous flux can be adjusted by rotating the ring on the outer diameter of the lens. It can be matched with an electronic shutter camera and can be used under all kinds of lighting conditions. - Automatic aperture lens: The aperture motion is driven by a motor. The motor is controlled by the video signal of the camera. It can be matched with any CCD-camera. It is suitable for places with large brightness changes and a large range of monitored surfaces to avoid causing halation and burning the target surface. 3. ** In terms of structure ** - Fixed focal lens: used for specific surveillance scenes, collecting video signals in an environment with relatively fixed lighting conditions. - [Manual Illuminating Circle Focus: It is suitable for video signal collection in scenes with stable lighting conditions.] - Automatic circle focal lens: It can be used to collect video signals from places with large changes in the brightness of the monitored surface. - Manual Aperture Zoom-lens: It is used in a monitoring environment where the focal length needs to be adjusted manually to collect video signals. - [Automatic zoom lens: Can be used in all kinds of light. The focal length can be changed according to the needs to collect video signals.] - Automatic aperture electric zoom lens and electric three-variable (aperture, focal length, and focus) lens: It can adapt to a variety of monitoring needs and collect suitable video signals under different light, distance, target size, etc. Different surveillance cameras were used in different scenarios, such as parks, industries, broadcasting, machine vision, military, aerospace, safe cities, forest fire prevention, border defense, road monitoring, high-speed rail, power, airport, pipeline, maritime, island, port, lake, nuclear power plant, ships, and many other fields. In terms of civilian use, it could be used to monitor residential buildings, real estate villas, shopping malls, financial offices, and other places. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>