Video surveillance Part of the security system Video Surveillance is an important part of security system. The traditional monitoring system includes front camera, transmission cable and video monitoring platform. Cameras can be divided into network digital cameras and analog cameras, which can be used as front-end video image signal acquisition. It is a comprehensive system […]
In 1895, German overtone made the world’s first direct current hand drill. The shell is made of cast iron and can be drilled with a 4mm hole in the steel plate. Hand drill is a portable small drilling tool, which is composed of a small motor, a control switch, a drill chuck and a drill […]
Intelligent home system is based on the use of advanced computer technology, network communication technology, intelligent cloud control, comprehensive wiring technology, medical electronics technology in accordance with the principle of ergonomics, integration of individual needs, The various subsystems related to home life such as security, lighting control, curtain control, gas valve control, information appliances, scene […]
A screwdriver is a common tool used to turn screws in place, usually with a thin wedge head that can be inserted into the slot or notch of the screw head. Beijing-tianjin-hebei Lujin and Shaanxi northern Shaanxi and northern Henan dialect known as “screwdriver”, more northern Henan is called screwdriver, Jiangxi, Anhui and Hubei, Henan […]
Fingerprints are the lines formed by the concave and convex skin on the end of the finger, which (seemingly) can increase the friction force of the hand when touching objects. (In fact, fingerprints reduce the friction force and make the skin more easily stretched and deformed, which can avoid skin injury, see the section of […]
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