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CRC2ETH™ （Conduct Rail Communication-To-Ethernet）
[Abstract]
[Keywords]
1.Wireless AP+Wireless Client communication
2.RCOAX leaky wave communication
It is more suitable for wireless coverage in complex environments. Its disadvantages include:
a. It is necessary to lay special leaky wave cables, and the installation accuracy, equipment cost and construction cost are very high;
b. The leaky wave cables must be laid in sections, and there are problems such as roaming disconnection;
c. It is easily affected by other co-frequency interference in the environment, affecting communication;
d. This technology was introduced to China earlier, and a group of on-site installation technicians were trained, who are familiar with the application technology;
e. It is less affected by the surrounding environment, and the signal covers the space closer to the cable
3. Infrared communication
As the name implies, it uses infrared light for point-to-point high-speed data connection. Since it needs to form a loop to transmit information, it is highly secure. Its limitations include:
a. High installation accuracy and high equipment cost;
b. Communication is directional (cannot turn) and short distance;
c. Since it is light wave transmission, communication will be interrupted when encountering obstacles;
d. This technology was introduced relatively early, and industry professionals are more familiar with it, and the technical requirements for installation are relatively low
Kunshan Wondertek Technology Co., Ltd. independently developed a new industrial communication solution CRC2ETH™ (Conduct Rail Communication-To-Ethernet), which is composed of CRC2ETH™ host (WD-H1200M-G3-M), CRC2ETH™ client (WD-H1200M-G3-S) and a separate 3-pole busbar to achieve high-speed Ethernet bus communication.
CRC2ETH™ can achieve a TCP/IP transmission bandwidth of up to 600Mbps, a communication distance of up to 500 meters, and an overall network delay of less than 20ms. It can also achieve high-speed bus communication with up to 64 communication nodes. The CRC2ETH™ device uses OFDM orthogonal frequency division multiplexing technology, MIMO (multiple input multiple output communication) communication technology and the underlying protocol standard of industrial Ethernet network communication. The following is an example of a certain warehouse sorting system:
A. Project Introduction
Cross-belt sorting is a commonly used sorting method. It consists of a group of trolleys forming a closed conveying and sorting system. It is widely used in the logistics industry. It is generally circular and continuously moves along the track to finally deliver the target package to the pre-set target sorting port.
B. Communication system
This project uses the CRC2ETH™ high-speed bus communication system of Kunshan Net Electric Technology Co., Ltd. The total length of the sorting machine circular track is about 300 meters. After the power supply busbar is installed, a 3P30A 3-pole busbar is separately arranged for communication (the busbar of the American Kangwen Company is used by the customer). There are 12 groups of trolleys running on the track, and each group of trolleys is assembled with a CRC2ETH™ client WD-H1200M-G3-S. The three terminals of the carrier signal interface of the CRC2ETH™ client are connected to three probes, and the probes communicate with the busbar through the probes. The Ethernet port of WD-H1200M-G3-S is connected to the Ethernet port of the terminal control device through a network cable to achieve network communication; a CRC2ETH™ host (WD-H1200M-G3-M) is installed at the control cabinet end, and the three terminals of the carrier signal interface of the CRC2ETH™ host are connected to the cable (the cable is connected to the busbar connected to the CRC2ETH™ extension); the Ethernet port is connected to the host computer or other network control equipment. 1:12 high-speed bus communication is achieved. The absence of any harmonic interference on the separate busbar line and the use of OFDM technology and MIMO communication technology and the underlying industrial Ethernet communication protocol standard of the CRC2ETH™ device ensure the stability of the entire system.
C. Project operation results
This sorting machine system using a high-speed bus communication system has been put into use in the warehouse for nearly one year. It is currently operating in a stable and good condition and has been unanimously recognized by users and industry experts.
During the commissioning and operation of the entire project, technical engineers from Kunshan Wondertek Technology Co., Ltd. provided on-site guidance, helped analyze and jointly solve on-site problems.
