Advantages of CAN fiber optic transceiver surround connectio

The CAN bus has the problem of insufficient data communication speed at a long distance, or the CAN bus has a problem of insufficient effective communication distance. Then, we should use some data repeaters to make up for this weakness. Among various types of CAN data repeaters, optical fiber to CAN repeaters are undoubtedly the most excellent one. Next, let's briefly talk about what is a CAN optical fiber transceiver, and then respond to the question and ask what to make it surround.

 

The data relay medium used by the CAN optical fiber transceiver is light, and the communication line is an optical fiber line. Through this simple two-sentence introduction, we know why it can stand out among many CAN data repeaters:

 

1. Light is the fastest transmission material in the world, which can reach 300,000 kilometers per second. Using it as a data relay medium, the speed is guaranteed and the communication is instant.

 

2. The optical fiber is wrapped in a lot of insulation, which is difficult to be affected by external interference, and the safety of communication is guaranteed.

The CAN optical fiber transceiver has more than one form. According to the optical fiber interface, it can be divided into ST interface, SC interface, and FC interface. According to the different styles of optical fiber connectors, it can be divided into single-core (one fiber connector is received and sent again) and dual-core (two fiber ends, respectively responsible for receiving and sending). According to the different fiber modes, it can be divided into single mode (can only emit one kind of light and transmit far) and multimode (can emit multiple kinds of light at the same time and transmit near).

Benefits of CAN fiber optic transceivers surround connection. First of all, we need to make it clear that the can fiber transceivers that can be connected in this way are all two fiber and one CAN types. One fiber and two CAN can not be connected. The connection effect is shown below.

 

We can see from the picture that all of these CAN optical fiber transceivers are connected in pairs to form a closed loop, that is to say, this large system is actually double insurance, no matter which line has a problem, the other line It will be added immediately for our continued normal use, that is, one active service and one reserve service. If there is a problem with the active service, the reserve service will be converted to active service. In fact, think about it carefully, like what is in a hospital operating room, aren't they all two sets of backup systems? Sometimes, one more guarantee is really safer.

Shenyang Guangcheng Technology has launched various types of CAN optical fiber transceivers to meet the needs of the majority of demanders. They can convert CAN bus data transparently and losslessly into optical signals, and then analyze the optical signal transparently and losslessly into CAN bus. data. Guangcheng Technology uses a unique bus signal conversion technology, which can convert the conversion time between CAN data and optical signals to the microsecond level, which ensures the real-time communication, so GCAN-208 can support any CAN bus communication protocol Such as: CANopen, SAEJ1939, DeviceNet, NMEA2000, etc.

 

The unique dual-channel device of the GCAN-208-1 module can simultaneously extend the communication distance of two CAN buses. The GCAN-208-2 module has two sets of optical fiber interfaces that can be used for cascading. This series of modules is a key tool for industrial bus transformation, long-distance communication, and isolation of bus interference. The module's CAN bus interface has integrated isolation protection modules to prevent damage to the module due to instantaneous overvoltage and overcurrent. At the same time, the module It has the characteristics of small size, plug and play, etc. It is also the choice of existing system integration.