The security monitoring system is one of the major subsystems in the security technology prevention system. The formulation of this specification is to adapt to the actual needs of safety and prevention projects, in order to improve the quality of engineering design, to provide a national uniform, more scientific and reasonable design specifications for the design of security monitoring system for the majority of engineering design personnel, but also for the intermediary service agencies and government supervision The management department provides the technical basis for program demonstration, system evaluation and supervision and inspection.
The composition of the security monitoring system consists of:
The security monitoring system is generally composed of four main parts: front-end, transmission, control and display recording. The front-end part includes one or more cameras and associated lenses, heads, shields, decoding drivers, etc.; the transmission part includes cables and/or optical cables, and possible wired/wireless signal modulation and demodulation equipment, etc.; control part It mainly includes video switchers, PTZ camera controllers, keyboards, control communication interfaces, power supplies, and consoles and monitor cabinets. The display and recording devices mainly include monitors, video recorders, and multi-screen splitters.
Front-end part: The front end completes the shooting of analog video, the generation of detector alarm signals, the control of the pan/tilt, the protective cover, and the alarm output. These security applications mainly include: cameras, electric zoom lens, outdoor infrared detectors, dual detectors, temperature and humidity sensors, head, protective cover, decoders, lights, siren and other equipment (equipment usage according to the user's Actual demand configuration). The camera uses the built-in CCD and the auxiliary circuit to shoot the scene as an analog video signal, which is transmitted via the coaxial cable. The power zoom lens zooms in and out of the shooting scene, and realizes optical adjustment such as aperture and focus adjustment. Temperature and humidity sensors can detect the temperature and humidity in the environment to ensure a good internal physical environment. PTZ, protective cover provides a suitable working environment for the camera and lens, and can achieve horizontal and vertical adjustment of the shooting angle. Decoder is the core equipment of PTZ and lens control. Through it, it can realize the use of computer interface through software control lens and PTZ.
Transmission section: The transmission section introduced here is mainly composed of coaxial cables. The transmission part requires real-time transmission of images captured by the front-end camera. At the same time, it requires transmission with small loss and reliable transmission quality. Images can be clearly displayed in the video control center.
Control section: This section is the core of the security system. It completes the digital acquisition of analog video surveillance signals, MPEG-1 compression, monitoring data recording and retrieval, and hard disk recording. Its core unit is the acquisition and compression unit. Its channel reliability, calculation processing capability, and convenience of video retrieval directly affect the performance of the entire system. The control part is the key part to realize linkage between alarm and video recording.
Steel Pipe (steel pipe production technology development began on a bicycle manufacturing industry rise, the 19th century early oil development, during the two world wars ships, boilers, aircraft manufacturing, after the Second World War thermal power boiler manufacturing, chemical industry and petroleum natural gas drilling and transportation, effectively promote the development of steel pipe industry in variety, yield and quality.
Steel pipe is not only used for conveying fluid and powder solid, exchange heat energy, manufacturing machinery parts and containers, it is a kind of economic steel. The steel pipe is used to make the structure of the building structure, the support and the mechanical support, which can reduce the weight and save the metal from 20 to 40%, and can realize the mechanization construction of the factory. The construction of the highway bridge with the steel pipe can not only save the steel, simplify the construction, but also greatly reduce the area of the coating protection layer, save the cost of investment and maintenance.
Photo of our steel pipe:
According to the production method
Steel pipe according to the production method can be divided into two categories: Seamless Steel Pipe and pipe joints, pipe joints as Welded Steel Pipe.
1. Seamless steel pipe according to the production method can be divided into: hot-rolled seamless tube, cold drawn tube, precision steel tube, thermal expansion tubes, cold spinning tube and pipe extrusion.
Seamless steel pipe made of high quality carbon steel or alloy steel, hot-rolled, cold-rolled (drawn) branch.
Bundles of steel tubes
Bundles of steel tubes
2. Welded steel pipe for the different welding process is divided into the furnace pipe, welding (ERW) pipes and automatic arc welding, because of the different welding form is divided into two kinds of longitudinal and spiral welded pipe, due to the shape of the end and circular welded pipe and shaped (square, flat) welded pipe.
Welded steel pipe is rolled into a tube shaped steel plate to butt or spiral seam welding and, in the manufacturing method, voltage liquid transportation by welding steel pipe, spiral seam welded steel pipe and directly roll welded steel pipe, welded steel pipe. Seamless steel pipe can be used in a variety of industries, such as liquid pressure pipe and gas pipeline. Welding pipe can be used for water pipelines, gas pipelines, heating pipes, electrical appliances, etc..
By material
According to the material (i.e. steel pipe steel) can be divided into: carbon tubes and alloy tube, stainless steel tube etc..
Carbon pipe can be divided into ordinary Carbon Steel Pipe and high quality carbon structure pipe.
The alloy tube can be divided into: low alloy pipe, alloy pipe structure, high alloy tube, high strength tube. Bearing tube, heat resistant acid resistant stainless steel pipe, precision alloy (such as can be cut alloy) tube and high temperature alloy tube, etc..
Classification by connection
According to the pipe end connection can be divided into: light pipe (pipe end without thread) and the car wire pipe (Guan Duan with a thread).
The wire pipe is divided into: ordinary car wire pipe and pipe end upset car wire pipe.
Thick wire pipe can also be divided into: plus thick (with external thread), inside the thick (with the inside of the thread) and inside and outside the thick (with internal and external threads) and other places of the car wire pipe.
Threading pipe can also be divided into: ordinary cylindrical or conical thread and special thread, such as the wire pipe.
In addition, according to the needs of users, the car is generally equipped with pipe connector delivery.
According to the coating characteristics
According to the characteristics of surface coated steel pipe can be divided into: Clarinet (not coated) and coating tube.
The coating pipe has galvanized pipe, aluminum, chrome plated tube, alumetized tubes and other alloy layer of steel pipe.
The coating pipe is coated with an outer coating pipe, an inner coating pipe, an inner and an outer coating pipe. Commonly used coatings are plastic, epoxy, coal tar epoxy resin as well as a variety of glass type of anti-corrosion coating materials. Galvanized pipe is divided into KBG pipe, JDG pipe, screw pipe, etc.
Steel Pipe
Ship Building Steel Pipes,Dredger Structural Pipe,Structural Steel Pipe,Double Wall Steel Pipe
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