The requirements for the transmission network in the technical specifications of the network video surveillance system are as follows:
The end-to-end communication quality requirements of the IP bearer network are as follows:
Upper limit of packet loss ratio of bearer protocol
TCP 2/100 200ms
UDP 1/100 300ms
The Ministry of Public Security "3111 General Technical Requirements" stipulates that the network performance indicators within and between monitoring centers meet the requirements set in the communication industry standard YD / T1171-2001, and the contents are as follows;
The requirements for the quality (Qos) level of the transmission network are as follows:
1. The upper limit of network delay should be less than 400ms.
2. The upper limit of delay jitter should be less than 50ms.
3. The upper limit of packet loss rate should be less than 1 * 10-3
Diamond cutting piece is a widely used in stone, concrete, precast board, new and old roads, ceramics and other hard brittle materials processing.
Diamond cutting pieces are mainly composed of two parts; Matrix and cutter head,
The matrix is the main support part of the bonding tool head, and the tool head is the cutting part in the process of use.
The tool head will be constantly consumed in use, while the matrix will not. The reason why the tool head can play a cutting role is that it contains diamond. Diamond, as the hardest material at present, cuts the processed object by friction in the tool head, while diamond particles are wrapped in metal inside the tool head.
According to the shape of the knife head, there are different effects:
1. Continuous edge Saw Blade: continuous saw diamond cutting blade, generally made by sintering method, water must be added when cutting to ensure the cutting effect, and the type of gap will be cut by laser.
2, knife head cutting piece: serrated disconnect, cutting speed, suitable for dry and wet cutting methods.
3, corrugated cutting piece: combined with the advantages of the first 1, 2, serrated continuous corrugated uniform convex and concave, improve the cutting speed, increase the service life.
Cutting Wheel,Diamond Disk Marble,10 Cut Off Wheel,Aluminum Oxide Cutting Wheel
Henan Jinlun Superhard Material Co., Ltd , https://www.jlsuperhard.com