1 Overview
With the large-scale promotion of China’s urbanization construction, shopping malls for intelligent buildings such as community buildings are also expanding, and the professional development trend of information construction has raised new demands for the intelligent management of intelligent buildings. Video Surveillance, Access Control, Aggression Alarm, Parking Lot Handling, Visitor Processing, Attendance Spending, Elevator Level Control, On-line Inspection, Fire Alarm System, etc. Needed to Accelerate Large-scale Integration, Incorporation, and Management Infinite needs. The establishment and use of network information systems are the main guarantees for improving operational efficiency, improving service methods, and enhancing professional competitiveness.
2, the use of the exchange machine needs
In practical use, all types of intelligent building security monitoring and access equipment such as camera number point distribution is irregular, the monitoring scale is far and near, separated by only a dozen meters, and some intervals reach several hundred meters, or even several kilometers, and these The distribution methods of monitoring points are various and can be roughly divided into the following categories: gathering scattering, scattered scattering, ring scattering, isolated scattering, or a mixture of the above several scattering.
3, security network exchange main function request
(1) Operating environment request
The most basic request for the professional characteristics of the security system is the ability to ensure uninterrupted operation 24 hours a day. This requires a long-term stable operation of the AC. Since many cameras are installed outdoors, a large part of the AC is also installed outdoors, such as outdoors. Distribution boxes, waterproof boxes on the monitoring poles, building facades or corridors are greatly affected by the outdoor environment. The outdoor environment (general scale -20°C - 60°C) is a great test for the operation of AC machines. Normal home or commercial AC machines often do not ensure reliable operation.
Security ACs should be able to get used to complex electromagnetic environments. Similar to industrial products, they should have outstanding electromagnetic compatibility, be able to resist interference, surges caused by lightning strikes, and static electricity around the goods. These are proposed for security network exchanges. Higher request. Therefore, outstanding electromagnetic compatibility is necessary for security exchanges, otherwise it will result in various types of failures, such as high packet loss rate, unsatisfactory monitoring views, and even video connection interruptions. This will also reduce equipment life. Even equipment damage and other scenes.
2) Job life request
Security relays have a long service life request. The MTBF of common ACs is only 5,000 hours. The security exchanges need longer working hours and the request is at least 40,000 hours.
(3) Skill function request
Video surveillance requires good real-time performance. In order to ensure the continuity of the picture, the requested video data cannot be dropped. Generally, non-network management exchanges are planned for the PC network. The cache is generally planned to be 128K-512K. Simple buffer overflow causes the video to be postponed.
Security monitoring AC machines should be satisfied with the video monitoring of large flow data transmission requests, planning 1 ~ 4M cache, to ensure that data exchange can be strong enough to ensure real-time video transmission. Under normal circumstances, the video stream has two parts: the main stream and the substream. The most important part of the interface speed of the AC is to consider whether the uplink port can carry the total stream of all cameras. In general, all 720P streams reach 4Mbps, and 1080P streams reach 6-8Mbps. In general, the data processing capability of the network exchange machine can also be dissatisfied with the need to monitor the rapid forwarding of large traffic, and it will show such phenomena as high packet loss rate, resulting in the monitoring of the view.
4, typical network use map
5D Wheel Alignment With Tablet is stadard specification of 5D Wheel Alignment. This model is very simple. The user can operate the measurement and adjustment only with a tablet. The data transmit is by WiFi. So the mesurement results are very stable. With the development of technology, it is possible to control the whole process by the tablet with android system. Due to WIFI transmission, users can connect more devices with android system, for example cell phone with android system.
Advantages of Sucvary 5D Wheel Alignment:
1.Without limitation of space,5D wheel alignment can be used on all kinds of lifts.
2. With 5 cameras, the reference plane is car body, so 5D wheel alignment can measure almost all kinds of vehicles, even if the vehicle is lifted.
3. 5D wheel alignment supports varied operation platforms, point to point transmission by WiFi can shied interference.
4. 5D wheel alignment is supported by powerful cloud service; 5D wheel alignment can connect to IPAD, cell phone, computer and the Internet, supporting remote operation and data upgrade.
5. Four targets are crash resistant and can be exchanged. Fix wheel claws without taking apart wheel hub cover.
6. 5D wheel alignment measurement range is wide, and it can also test wheel deviation besides all traditional parameters.
7. The optional one point wheel clamps can be installed within four seconds.
5D Wheel Alignment With Tablet
5D Wheel Alignment With Tablet,5D Wheel Alignment
Shenzhen Sucvary Tech Co., Ltd. , https://www.syalignment.com
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