The coldest temperature in winter in the northern region can reach ten degrees below zero, and the hottest temperature in summer can reach 38°C. In order to solve the problems of cold protection and heatstroke protection, we now introduce a pig-raising circle that is warm in winter and cool in summer. This kind of pigsty is about 10°C higher than the outside temperature in winter, 5°C lower than the outside temperature in summer, and the construction cost is low, which is very suitable for rural construction in northern regions. The large circle of pig raising is generally east-west direction, high in the middle, low in the north and south, and its north-south wall is as short as 0.7 meters. It is a masonry structure, and the gable and pigpen partition wall is also a masonry structure. The top of the large circle is made of eight beams (one for each side) and one beam. Concrete beams or beams can be used for concrete beams and beams. The asbestos tile or fiberglass tile is placed on the upper floor, and the width of the lower side of the second floor (about 2/5 of the width of the slope on the side of the house) is also reserved. In the winter, the plastic film is added to absorb sunlight and promote the insulation effect. In the summer, the plastic film is removed (it is still necessary to cover it in heavy rain), so that there is a large draft in the circle, and the basket is planted outside the circle to cool the sun and cool the sun. In the large circle, it is divided into two rows of north and south, and 10 pigsheds (each with a length and width of 3.5 meters). Each column is 12.25 square meters (3.53.5 meters). There is a 1.2-inch wide circle door at each end of the hallway. When the temperature in winter and spring seasons is low, only a lap around the east side is opened to facilitate insulation and cold protection; in summer and fall season, the doors of east and west can be opened when fat pigs are slaughtered. The troughs are located on both sides of the corridor. The partition walls on the troughs are reinforced to facilitate feeding pigs. Next to the trough is a gate (facing the corridor), which is a reinforced structure. The drinking spout is located on the east or west side of the pig bar. The top of the lap is 2.5 meters high and the large circle is 17.5 meters long. In the large circle of 10 pig stalls, some of them are used to raise pigs. Each pen has 10 to 12 pigs and about 20 kaka pigs (small shelf pigs). Some south of a row of breeding sows, each with a sow or a sow in the late pregnancy, raising 3-4 sows in the pre-pregnancy period, a row of fattening pigs in the north.
The Bullet Fixed Focus Camera/ Bullet Fixed Focus CMOS Camera/ Bullet Fixed Focus Webcam/ HD Bullet Fixed Focus CCTV Camera/ Fixed Focus Bullet Webcam Outdoor/ Infrared Fixed Focus Bullet Cameras means that the Bullet Fixed Focus Camera belongs to not only the Fixed Focus Camera but also the Bullet camera. So what is the Bullet Camera?
Bullet Fixed Focus Camera, Bullet Fixed Focus CMOS Camera, Bullet Fixed Focus Webcam, HD Bullet Fixed Focus CCTV Camera, Fixed Focus Bullet Webcam Outdoor, Infrared Fixed Focus Bullet Cameras SHENZHEN SANAN TECHNOLOGY CO.,LTD , https://www.sanan-cctv.com
The Bullet Camera is one type of the surveillance CCD cameras. The Bullet Camera has a rectangular parallelepiped appearance, and the front side is a C/CS lens interface(the Bullet Camera does not include a lens).
The Bullet camera is powerful, widely used and high cost performance. With the security surveillance camera applied extensively and deeply, such functions as the high-definition imaging technology, high-definition through-fog function, infrared detection and lock, day and night conversion infrared camera shooting function, have been widely used in the TV surveillance projects. The day-night conversion infrared camera shooting function of the Bullet Camera enables the camera to detect infrared rays in the day-night conversion mode and realize the filter switch, which can solve the frequent day-night conversion problem of the ordinary day-night cameras, and can effectively reduce image noise in low-light environments at night and improve the image quality.
The zoom range of the Bullet Camera depends on the lens you choose, from several to ten times, and the lens replacement is very convenient. The long-distance or wide-angle monitoring can be realized by selecting different lenses.
The Bullet Camera has many applications. For example, as for the road monitoring, even if the changing range of the vehicle speed is large, the Bullet Camera can provide clear pictures. Also, the Bullet Camera can capture the license plate via the built-in glare suppression function and the manual electronic shutter setting. Besides, the Bullet Camera can truly reproduce the dynamic picture at night, and it is suitable for the places which are monitored 24 hours a day, such as the expressways, toll stations, safe cities, etc.
In conclusion, nowadays the Bullet Camera is one of the major Cameras. And the Bullet Fixed Focus Camera is very popular because of its powerful functions, simple and elegant appearance.
