Security monitoring equipment includes many aspects. Therefore, the type of equipment is also more complicated. The transcript can be divided into television monitoring systems, transmitter alarm control systems, remote image transmission equipment products, etc., mainly the following children monitoring system equipment :
1) PTZ The PTZ is an installation platform composed of two text-flow motors. The thermocouple control system can remotely control the direction of rotation and movement. It is different from the concept of a PTZ camera. There are several types of PTZ for the control system: they are divided into indoor and outdoor type according to the use environment. The main difference is that the outdoor type has good sealing performance, waterproof, dustproof, large load, and is divided into side loading and lifting according to the installation mode. PTZ is installed on the ceiling or on the end wall; it is divided into ordinary type and ball type according to the shape. The ball type PTZ is placed in a hemispherical, spherical protective cover, in addition to preventing dust from interfering with the image. Covert, watch, fast. When selecting the PTZ, consider the installation environment of the thermal resistance, the installation method of the bimetal thermometer, the working voltage, and the size of the load. Also consider factors such as the performance cost ratio and appearance.
2) The bolt mechanism The bolt mechanism is a kind of camera, which is different from the head of the cloud. The bolts are generally not remotely controlled and V is set well. The remote cannot be controlled by the keypad stick. The most advanced ones are infrared guns and pressure transmitters, which install a circle of infrared light near the camera so that they can record even in the dark.
3) Monitor The monitor is the standard output of the monitoring system. With the monitor we can view the images sent from the front of the dishes. The monitor is divided into color and black and white. Sizes are 9,10,12,14,15,17,21 inches, etc. The common is 14 inches. The monitor is also represented by the number of lines as a resolution 111-11 camera. In practice, it is generally required that the number of monitor lines matches the camera. In addition, TVs with high-resolution differential pressure transmitters are now also available for TV monitors.
4) Video-inclined amplifier When the video transmission distance is relatively long, it is better to use a video line with a thicker wire diameter. When P1 is added, the video amplifier can increase the signal strength in the line to achieve a long-distance transmission. The video amplifier can enhance the apparent brightness, chroma, and PT100 RTD sync. However, the in-line interference estimate will also be amplified. In addition, too many video amplifiers cannot be connected in series in the level transmitter loop, otherwise saturation will occur, resulting in image distortion.
5) Visual Assist Dispenser One-way video price number corresponds to a monitor or video recorder. If you want to send the image of one camera to multiple managers, it is best to select the video distributor. Because the attenuation of the f-number of the parallel video is large, and the impedance is mismatched after being sent to multiple output devices, the picture will be seriously distorted and the line will be unstable. Video distributor in addition to resisting the Picto, there is video gain. The video signal can be sent to multiple devices at the same time without affecting.
6) Apparent tilt switch If no monitoring is required at all times, a switch can be set up in the level measurement monitoring room. The output signal of the camera is connected to the input end of the switcher, and the output end of the switcher is connected to the monitor. The input end of the switcher is divided into 2, 4, 6, 8, 12 and 16, and the output is divided into single and Dual, and several can also switch audio simultaneously (depending on the number of hell). The switcher has two working modes of manual switching and automatic switching. The switching device is cheap (usually only a hundred dollars), the connection is simple, and the operation is convenient. However, only one of the images in the input can be viewed within a certain period of time. To view multiple camera images on one monitor at the same time, you need to use a picture splitter.
7) Screen Splitter There are four splitters, nine splitters, and sixteen splitters for the screen splitter. You can display 4, 9 and 16 camera images on one monitor at the same time. You can also send them to the recorder for recording. Four division is one of the most commonly used devices and its cost performance is also better. The address and continuity of the image can meet most of the requirements. Nine cents and sixteen divisions are more expensive, and the resolution and continuity of the segmented image will be reduced. The video is not good. There are also six-, eight-, and quad-segment devices, but the image ratio, sharpness, and continuity are not ideal, and the market usage rate is very small. Most splitters can display single or multiple images in addition to one another. You can add time and characters, set automatic switching, connect the alarm device or the magnetic flap level gauge in the sewage treatment area.
8) Embedded DVR Embedded DVRs generally use a dedicated embedded processor and use their own motherboard. The video compression chip is integrated on the motherboard or the oil card architecture. From the standpoint of the hardware structure of the pressure calibrator, all I's are basically the same, the main difference is also reflected in the choice of video compression chip, the main processor and other chips, the video compression chip has two kinds of ASIC and DSP. It is Arm, Mips or PowerPC. The operating system uses embedded real-time operating systems such as Psos, ​​paperless recorders, embedded Linux, etc. The main program is short, fine, and does not require hard disk storage system programs. It is not as vulnerable to computer viruses as ordinary computers.
The main function of the embedded DVR is to store the video and store the picture taken by the front-end camera in MPEG format to prepare for post-mortem authentication. The storage address is determined by the size of the hard disk.
9) Monitoring La Lazhejian disk monitoring and control keyboard is an important human-machine dialogue device of the pressure check-table monitoring system. It is based on the instructions of the operator-key person to the video switching device, audio switching device, video camera decoding device and the system in the system. Operates for control and other devices, and receives and detects loopback messages sent by various devices in the system. For the password management of the secondary keyboard user, the user must input the correct password to operate the keyboard. The system control keyboard is used for system control. It can conveniently control PTZ rotation and lens zooming. It has full functions, fewer buttons, and reasonable layout. The operation is easy to learn and can complete the conventional operation of the matrix system. 485 connections. Control distance up to 1500 meters.
Author: Audit provides editing
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