Nearly 3 million hectares of GM crops are grown in China

On the 26th China International Conference on Storage and Processing of Agricultural Products and Food Safety held on the 26th, Luo Yunbo, Dean of the College of Food Science and Technology of China Agricultural University, introduced the status of GM food in China and its safety. President Luo said that in the world today, except for the former Soviet Union, most countries and regions have genetically modified foods. The United States, Argentina, Canada, Brazil, and China are the countries with the world's largest population. The cultivation of genetically modified crops in China grew rapidly from 1998 to 2003 and reached nearly 3 million hectares in 2003. In China's Anhui, Beijing, Hebei, Henan, Fujian, Jiangsu and other regions, genetically modified crops are planted. China's GM crop cultivation currently implements the policy of “where to declare and where to plant”, and there are both genetically modified crops planted in China. The genes imported from abroad also have genes cultivated by China. The genetically modified products in China are mainly concentrated in four areas such as cotton, bell peppers, tomatoes, and animal microbes. In particular, about 90% of cotton is now genetically modified. . Regarding the safety of genetically modified foods, President Luo Yunbo said that China is now gradually improving the testing of genetically modified foods and the formulation of relevant laws and regulations. The country has currently established 25 genetically modified testing standards and safety evaluation standards. There are currently 15 programs under development. There are 40, 42 planning and construction inspection agencies, and in 2001 the National Agricultural Genetically Modified Organisms Safety Management Office was established to specialize in the work related to genetically modified foods.

Indoor PTZ Camera

What is Indoor PTZ Camera

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.

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.
Automatic tracking is divided into three types: one is through embedded video encoder, also known as intelligent visual server; the other is PC software; the other is to directly write the tracking algorithm to DSP chip, and then design the DSP chip as a hardware circuit on the high-speed ball motherboard, and the high-speed ball is directly read. Among the three types, the third type is used most in the current market.
The intelligent vision PTZ automatic tracking and monitoring system consists of an intelligent vision server (responsible for intelligent analysis and command) and a high-speed spherical camera (responsible for tracking targets). The automatic PTZ intelligent tracking function enables the camera to automatically PTZ drive its own PTZ and zoom lens, and automatically control the PTZ camera to rotate the PTZ in all directions and zoom the lens, and perform visual oriented automatic tracking for the locked moving target, so as to ensure that the tracking target continues to appear in the center of the lens with a close-up image, so that the security personnel 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.

The automatic PTZ tracking and monitoring system integrates optics, electronics, machinery, information processing and network, and is composed of camera, power transmission, motion control device, image analysis, recognition, compression and communication based on high-speed parallel processing. It has the functions of video camera, position control, orientation and lens preset, moving object detection, recognition and tracking, flame and smoke detection and alarm, etc. It can be widely used in buildings, banks, airports, stations, customs, transportation, power, factories and mining enterprises and other security monitoring occasions.

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