Folding knife, a kind of knife, can be folded. The folding knife is mainly connected with a knife body which can be rotated into by a pivot assembly at the front end of the handle. The knife body is provided with a safety buckle relative to the side of the knife body, and an elastic strip relative to the back end of the knife body. The back end of the knife body is provided with a stop part and a stop concave part which can be butted by the elastic strip, and the safety buckle has a tilted elastic buckle part, The elastic strip is arranged in the holding chamber of the handle, one end of which is fixed, and the other end of which is connected with the stop part of the tool body, so as to provide the thrust to assist the rotation of the handle when the tool body is rotated out of the handle, In addition to the simple semi-automatic operation mode of turning out and positioning by using the elastic auxiliary push knife body, the overall thickness of the folding knife is reduced by the refined and simplified structural design, which is convenient for the collection and carrying of the folding knife and makes the operation of the folding knife easier. folding knife,folding knife kits,folding chef knife Shangqiu Zhengtu Hardware Technology Co,.Ltd , https://www.zlztlighter.com
Trends in security monitoring equipment Analog cameras have been used for more than a decade, and network cameras have not been taken seriously, mainly due to the constraints of cost and broadband. The sudden emergence of high-definition network cameras, today's network cameras are again valued by the security industry, in today's network cameras and simulations. In the era of coexistence of cameras, many users are tangled in the end is to choose network cameras or analog cameras? Which camera is more suitable for you, what are the differences between image, integration, installation, scalability, management, monitoring, remote and cost? Today we have a discussion on this.
A network camera can be seen as a combination of a video camera and a computer. It captures images and transmits them directly over IP networks, enabling authorized users to view, store, and manage video data locally or remotely through a standard IP-based network infrastructure.
The network camera has its own independent IP address, can connect directly to the network and has built-in Web server, FTP server, FTP client, email client, alarm management, programmability and many other intelligent functions. The network camera does not need to be connected to a PC. It can operate independently and can be located in any location with an IP network interface. In contrast, the most common use of these devices is that they must be connected to a PC via a USB or IEEE1394 port before they can operate normally.
In addition to the video information, the network camera can also realize more other functions through the same network connection and transmit other useful information such as: video motion detection, audio, digital input and output (can be used to implement alarm linkage, such as triggering Alarms or activate on-site lighting, etc.), serial ports for transferring serial data or PTZ device drivers, etc. The image cache in the webcam can also save and send video images before and after the alarm occurs.
Image Network Camera: Let people see more clearly and always be the goal pursued by people. Network cameras can achieve output of 100w, 200w, and even 300w 500w pixel images. Analog Camera: Only D1, CIF output can be done.
Integrated network camera: Built-in operating system. Using a standard WEB browser on any PC, you can manage and view images and share it with multi-screen management software to achieve multi-channel monitoring without limit. Does not increase the cost of hardware.
Analog cameras: Analog cameras are connected to digital video recorders (DVRs). The number of DVR channels is limited. After the DVRs are fully loaded, the cost of the hardware is increased when the cameras are added.
Install Network Camera: Simply connect the network camera to the nearest network and assign an IP address. It can use the existing network as a transmission platform, not to go wiring.
Analog cameras: Connect coaxial cables to each camera and connect them to control platforms, video equipment, and display devices. Each new route must be rerouted and no ready-to-use network is available.
Scalable Network Cameras: Easily add more network cameras to the system.
Analog cameras: It is very difficult to expand the work. Each analog camera needs a dedicated cable, which affects the image quality when using long cables.
Management, monitoring network cameras: Built-in WEB, using a standard WEB browser on a PC, can manage and view images. Ability to remotely manage and view images. Network cameras can store image data on a remote hard disk, which is easy to search, easy to store, and will not be destroyed.
Analog cameras: Closed circuit, can only be monitored internally and cannot be remotely monitored. Video data can only be stored locally and cannot be viewed remotely and is easily destroyed by criminals.
Remote Network Camera: Can perform remote management, such as: video settings, cloud mirror control, alarm settings, two-way intercom, upgrade management and other functions.
Analog Camera: Only view images locally for management.
Cost Network Cameras: The cost of using high quality network cables is usually 30% to 40% less than standard coaxial cables. A network cable can support hundreds of network cameras and other devices at the same time. IP-based network infrastructures are often in place, which means that the cost of building a system can be reduced to include only the cost of a webcam.
Analog Camera: Coaxial cable is very expensive, and the standard coaxial cable of RG59 750hms is 30% to 40% more expensive than high quality cable. Each analog camera needs a cable. If there are many cameras, many morning cables must be purchased and the money must be spent on the installation and deployment of these cables. Manpower and maintenance costs are high, and the system construction costs will also include the cost of analog cameras, video recorders and videotapes.
In general, network cameras can transmit full-duplex digital information and can be effectively integrated with other devices in the system, enabling them to achieve higher performance levels in a distributed, scalable environment, while analog cameras only It can transmit unidirectional video signals whose performance is subject to DVR and operator level. The network camera can also communicate with multiple application systems in parallel to achieve a variety of different functions, such as detecting motion in a picture or sending video streams in different formats.