A technical defense system established for the purpose of ensuring security is called a security defense system. It includes the timely detection of intrusive and destructive behaviors by modern physics and electronic technology, the generation of light alarms to hinder the offenders in the summer, the record of the scenes and sounds to provide proof of the case, and the reminders on duty to take physical precautions and various equipment. The setting of the intelligent community security system should follow the following principles: This article refers to the address: http:// 1) According to the risk level of the protection object in the intelligent community, the corresponding protection level should be determined to meet the design requirements of the community comprehensive protection and partial depth protection to achieve the required level of safety precaution; 2) According to the construction standards, use functions and security management needs of the intelligent community, comprehensive use of electronic information technology, computer network technology, sensor detection technology, security technology, etc., to form an advanced, reliable, economical and applicable security precautions Technology System; 3) The system design of the intelligent community security system and the configuration of each subsystem shall comply with the relevant national security technical regulations and the norms and standards of intelligent residential communities, and adhere to the principle of people-oriented. The integration of the system should be realized in a structured, modular and standardized way, which should be able to adapt to the needs of engineering construction development and technological development. System Components The intelligent community video surveillance system consists of a video service terminal consisting of a surveillance camera and an embedded video server, a PC client software and an Android mobile client software. The overall structure of the system is as follows: Surveillance camera to do → 3G video server → Wifi 3G Internet → smart community video monitoring center → portable client The system mainly implements the following three core functions: 1) Manage camera head grouping, store and display surveillance video, remotely control camera pan/tilt rotation, focus adjustment, etc.; 2) Real-time analysis of surveillance video to achieve detection of ten items such as motion detection, smoke detection, open flame detection, and image defogging. At the same time, the detection index is analyzed, and orange, yellow and red alarms are issued according to the set alarm threshold, and a voice alarm function is provided; 3) Video service function for sending video and alarm information to Android clients
A small safety part in an automobile electrical device or piece of machinery that causes it to stop working if the electric current is too high, and so prevents fires or other dangers. Fuse, also known as current fuse, is defined by the IEC127 standard as "fuse-link". It is mainly an overload protection. If the fuse is properly installed in the circuit, the fuse will cut off the current and protect the circuit safe operation when the current abnormal is raised to a certain height and heat. Invented by Edison fuse is used to protect more than one hundred years ago when the expensive incandescent bulbs, along with the development of The Times, the fuse protection power equipment is not trained in current overheat damage, avoid electronic equipment serious damage caused by internal fault. When a circuit breaks down or is abnormal, the current increases with the current and the increased current may damage some important components in the circuit, and it may also burn the circuit and even cause a fire. If correctly placed in the circuit fuse, the fuse will be abnormal current increases to a certain height and heat, its own fuse to cut off the current, so as to protect the safe operation of the circuit.
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