What is Mini Camera
Micro mini camera is a product of modern high-tech, also known as micro monitor. It has the characteristics of small size, powerful function and good concealment.
Wireless camera
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Chitin operation points: 1 50 kg of crab shells immersed in 75 kg of 5% dilute hydrochloric acid solution, mixed evenly, covered with wood and stone blocks, so that the shell is completely immersed in hydrochloric acid. After 24 to 28 hours crab shell softened , The calcium contained in the shell is completely dissolved and can be removed and packaged in the dill, washed repeatedly with water to remove fleshy and other impurities from the shell and washed until neutral. 2 40 kg concentration of 8% - 10% The caustic soda solution was put into a pot and boiled. The shell was poured into a pot and boiled for about 1.5 hours until the protein and fat were completely dissolved. The shell was scooped into the stupid water and rinsed repeatedly until neutral, and then pressed dry. 3 In addition, another 78 grams of potassium permanganate, 40 liters of water into the sand tank, stir, the shell is also placed in the cylinder, then the solution in the sand tank due to oxidation into brown. 1 hour after the shell to the Amoy In the bowl, rinse repeatedly with water. 4 Take 453 g of sodium sulfite, 50 liters of water, and pour the shell into another sand jar. Stir well. The chitin is gradually bleached. Add 25 liters of water and dip for 15 minutes. Add 5% diluted hydrochloric acid 2.5 kg. , Stir for 5 minutes. When the shell is pure white, it can be picked up and washed in water. Then it is squeezed into water and dried on a flat bamboo basket. It is insoluble chitosan. 5 will be 40%. Alkaline solution of 37.5 kg is divided into 4 prawns. Each cylinder is immersed with about 10.6 kilograms of insoluble chitin. Stir uniformly and move into the drying room. The drying room temperature is gradually increased from 40°C to 60°C and maintained at 60°C. After 20-24 hours, stir once every 1 hour and gradually extend it to 5 hours to stir 1 time. 6 Take a small amount of sample and wash it. Place it in 1% glacial acetic acid. If it is completely dissolved, it means it is good. Properly extend the holding time, until it dissolves, use a wooden scoop to dip into the pan, rinse with cold water until neutral, and then squeeze to remove moisture, spread on a flat bamboo basket to dry, that is, soluble chitin.
Comprehensive use of shrimp shrimp shrimp production operation points: 1 Thaw the shrimp head, with a mincing machine to a pellet of about 5 mm shrimp head. 2 The shrimp head into the sandwich pot, add equal volume of water and 25% Vegetable oil, boiled for 15 minutes and allowed to stand for 3-5 hours. 3 The supernatant was centrifuged on an oil-water centrifuge at 5000 rpm for 5 minutes to obtain a dark red transparent crude product. 4 The trace amount of water was removed by heating, ie Sesame oil fine products.
Chitin, chitosan production operation points: 1 in the shrimp shell is added to the concentration of 6% - 8% hydrochloric acid solution and mix and soak for 24 hours, the calcium carbonate in the shell produces calcium chloride dissolution. Remove the soft shell, Rinse thoroughly with water until neutral. 2 Add 8% - 10% sodium hydroxide solution to the soft shell to boil, so that the protein and fat are completely decomposed, remove and rinse with water until there is no alkaline reaction. 3 with 0.5% - 1% potassium permanganate solution impregnated soft shell, oxidative removal of pigment impurities. 4 rinse soft shell with dilute acid, and then dilute alkali for the second alkaline cooking, can also play a role in bleaching. 5 will be used for chitin 40% sodium hydroxide solution impregnation, heat 50--60 °C, 24 hours after the pressure of the impregnating solution, washed in warm water at 30 °C 1, and then washed to alkaline free, drying that was chitosan.
Micro cameras are widely used in aviation, commerce, media, enterprises, institutions, families and other industries. The appearance of micro cameras has brought convenience to people's lives. At the same time, some phenomena related to corporate secrets and personal privacy have also emerged.
In 1991, the world's first camera (called CoffeeCam) first appeared in the Trojan room coffee pot at the University of Cambridge, UK.
The oldest camera, FogCam of San Francisco State University, has been used since 1994
In 1996, AXIS Communications published the first IP Camera using Internet architecture as the basis for signal transmission.
In 1999, AXIS Communications published IP Camera based on Linux system.
Wireless equipment is used stably in domestic wireless environment. The micro wireless surveillance camera has the characteristics of high stability, high speed, long distance and multi-point testing. It can play a huge role in the fields of environment, energy, construction, transportation, medical treatment, industrial machine condition monitoring, etc., especially when the cabling is complex, the cabling cost is high, the long-distance and large-scale transmission of data and the mobility demand is high.
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Comprehensive utilization of crab and shrimp by-products
The edible parts of the crabs account for about 1/3 of the whole body, and most of them are crab shells. The crab shells are subjected to chemical treatments such as decalcification, fat removal, bleaching and deacetoxylation to make soluble chitin, insoluble in water and alkalinity. The solution can be dissolved in 0.5% - 2% dilute acetic acid to form a white and transparent colloidal solution with high viscosity. It can be diluted with water at any proportion without sedimentation. It is textile, printing and dyeing, man-made fiber, paper making, wood processing, plastics As well as a raw material for medicine and other aspects, synthetic fiber made of chitin is soft and shiny, and comparable to wool. Extraction of chitosan from chitin into surgical sutures does not cause wound infection because Can be absorbed by the body without stitches. Because half of the crab shell is chitin polysaccharide material, with caustic soda solution treatment, available keto acid, which can do coagulant.