Monitoring personnel should master computer and network knowledge; Database knowledge; Software application; Hardware tools; Monitoring equipment knowledge, etc. Computer, network knowledge for computers, servers Wireless ripple requirements hardware to be familiar with wireless ripple requirements Familiar with workstation and server operating systems Wireless ripple requirements WINDOWS or wireless ripple requirements , LINUX or wireless ripple requirements , SERVER, be familiar with the use of a server hardware to deploy a management platform, this is the most basic requirements.
Camera installation and configuration The IP address and address code of the camera are the foundation of the network connection, and the correct setting is crucial. Choose the right lens according to the environment, such as 8mm Angle of view is recommended in the elevator area, and more than 6mm is required in the open area. The choice of platform, server and lamp should consider system compatibility and performance.
Shield is also one of the most commonly used equipment in the monitoring system, mainly divided into indoor and outdoor two kinds. The main difference between the indoor protective cover is the size, the appearance is beautiful, and the surface treatment is qualified. The main function is dust and damage prevention. Sealing performance of outdoor protective coverMake sure the rain doesn't get inside the shield and eat away at the camera. Some outdoor shields are also equipped with exhaust fans, heating plates, and wipers, which can better protect equipment.
1, you are talking about the rectifier diode parallel small capacitor? There are four in the full bridge rectifier circuit! This is not a bypass capacitor! Is audio circuit power supply designed to modulate AC signal eliminator capacitor! When using an AC radio or amplifier to listen to radio programs, often inThe sound of the received strong radio signal is accompanied by a strong hum, which seriously affects the listening effect.
2, bypass capacitor The main function of the bypass capacitor is to generate a shunt that can pass through the AC signal and introduce the noise interference signal to the ground. The bypass capacitor is generally used to reduce the transient current demand on the power module. If there are many integrated circuits, high-speed switching circuits and power supplies with long leads on the PCB board, a large-capacity capacitor should be selected. The bypass capacitor is a capacitor that can bypass filter out the high frequency component of the alternating current mixed with high frequency current and low frequency current.
3, capacitors in electronic engineeringIt plays an important role, especially when dealing with alternating current, especially when dealing with a mixture of high and low frequency components. This kind of capacitor that can effectively "bypass" the high-frequency current from the signal path is called the bypass capacitor. In the process of signal transmission, if it is necessary to ensure the integrity of the low-frequency signal in the operation of the amplifier, and avoid the interference of the high-frequency signal, the bypass capacitor is particularly critical.
4, the structure of the capacitor is two plates, separated by a layer of insulation, so under normal circumstances, the capacitor will not have current through (unless the insulation in the middle is broken down). When the capacitor is plugged straightWhen the flow loop, there will be a short charging process, when the positive and negative plates are full of charge (the voltage at both ends of the capacitor is equal to the power supply voltage), there is no current flow again, so the capacitor is isolated from the DC current.
5, the role of the capacitor is to separate the direct current, the direct current is blocked, and the AC power is passed smoothly. Decoupling Decoupling is to put a capacitor in the output signal to remove the high-frequency harmonic noise of the output signal and make the output signal clean. The coupling with the inductor is the opposite, the transformer at the beginning, the secondary is the coupling, the primary and secondary will affect each other. Decoupling is the separation of output from input