PTZ: In the security monitoring application, it is the abbreviation of Pan/Tilt/Zoom, representing the pan tilt omnidirectional (up and down, left and right) movement, lens zoom and zoom control.
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Fuvision's autonomous automatic PTZ intelligent tracking enables the camera to automatically PTZ drive its own PTZ and zoom lens, and automatically controls the PTZ Camera to rotate the PTZ in all directions and zoom the lens. It also conducts visual oriented automatic tracking for the locked moving target to ensure that the tracking target continues to appear in the center of the lens with a close-up image, so that the guards can see the information more clearly, It can also be used for obtaining evidence afterwards. The automatic PTZ tracking module makes up for the narrow field of vision of fixed camera monitoring, which is an essential function of a perfect security monitoring system.
The intelligent vision PTZ automatic tracking and monitoring system has the target analysis function, and is equipped with a high-resolution camera, a large magnification optical zoom lens and a high speed PTZ, which can automatically capture suspicious targets quickly and accurately. By setting the preset position intelligent vision PTZ automatic tracking monitoring system, the preset position scanning, automatic cruise and other functions can be realized, and many special requirements of intelligent monitoring can also be realized. In addition, the intelligent vision PTZ automatic tracking and monitoring system also has the advantages of beautiful appearance and strong concealment, so it is very suitable for public security intelligent monitoring applications in airports, squares, rail transit, villas, government administrative units, military regions, museums and other types of places.
How to choose the right clean gas medicine cabinet manufacturer and filter
The air-purifying medicine cabinet can be used as a icing on the cake to improve the laboratory environment and protect the occupational health and safety of the experimental personnel. As we all know, the clean gas medicine cabinet has two functions, one is to filter the toxic and harmful chemical gases volatilized by the chemicals in the cabinet, and the other is to purify the laboratory air.
What kind of filter is the best?
The performance of the filters produced by different manufacturers is very different. The filter produced by a good manufacturer will choose an optimal balance between the amount of adsorption and the amount of volatilization. From a more professional point of view, filtration The adsorption process of the device is a process of constant equilibrium. When a certain point is reached, the filter will release chemical molecules while adsorbing, which is similar to the process of dissolution and resolution.
Therefore, the adsorption amount of the filter is a relative amount, and its adsorption amount depends on the "retention" of the filter on the chemical molecule, and the effect of the filter on the chemical molecule is the combination of chemical and physical effects, relatively speaking, the molecular weight Larger chemical molecules have a larger volume, making it easier to have a stronger "retention" of the filter.
What kind of standards should be observed?
For the current standards for ductless fume hoods, different countries also have different standards. Professionals from different countries have different understandings of the unmanaged industry. The standard emphasis is also different. In other countries, the standard is the most strict.
Currently for our country, the JG/T 385-2012 standard is now implemented.
What is the safest?
Anyone with a certain knowledge of chemistry knows that the life of a filter depends on the type of chemical it adsorbs and the amount of volatilization of the corresponding chemical, as well as the environment in which the filter is located, such as temperature and humidity. Therefore, it cannot be said that the life of the filter is one year. This raises a very critical question. How can we accurately determine the filter saturation time? If the filter is saturated and can be detected or detected in time, it will immediately From safety to insecurity, production companies must highlight online monitoring systems to accurately and timely inform customers.
Why adjust the fan speed?
The argument that the fan speed can not be adjusted is a big mistake. When the medicine cabinet is shipped from the factory, the manufacturer will adjust the certain speed according to the resistance of the filter to achieve a reasonable air volume. However, after the filter works for some time, it absorbs a certain amount. The amount of chemical molecules, at this time its resistance becomes larger, because the resistance becomes larger, when the fan speed is maintained at the original speed, its air volume will become smaller and cannot meet the air volume requirement at the time of shipment. The speed is re-satisfied with the air volume requirements at the factory.
What is dangerous?
Some manufacturers recommend that customers use color beam tubes to detect filter saturation. It is quite dangerous. For example, acetone is used. Regardless of the 151L model of GASTEC or the 102SD model of KITIGAWA, the minimum detection limit is generally 20PPM, according to JG/T 385. -2012 standard, 1% TWA is 3mg/m3, the filter is considered saturated, when you use the color detection tube with the lowest detection limit to measure, it is completely deceiving customers! Professional practice should choose PID to detect.
Is it meaningful to install a temperature and humidity probe in the cabinet?
The temperature and humidity probe inside the cabinet is meaningless for the drug storage itself, but this probe can help the customer to understand the temperature and humidity inside the cabinet. I believe that there is no disadvantage. For example, installing a thermometer and hygrometer in a laboratory does not improve the laboratory environment, but it can help the experimenter understand the working environment of the laboratory.
Finally, no matter what company, we must provide the safest products, and customer safety is always the first.