The monitoring and data acquisition system formed by the wireless data transmission module is usually composed of a master station and multiple slave stations. The data transmission from the master station to the slave station is called downlink, and the frequency used is called the downlink frequency. Uplink, using frequency is called uplink frequency.
If the master station adopts the full-duplex working mode, the downlink data transmission and the uplink data transmission of this system can be performed at the same time, but the uplink frequency and the downlink frequency are not the same. Data cannot be transmitted directly between stations.
If the master station uses half-duplex operation, the upstream and downstream frequencies can be the same (called the same frequency as the transceiver), or can be different (called the different frequency of the transceiver). The data sent by any station can be used by other When the site receives it, the processor at each site determines whether the received data needs to be processed. However, the slave stations with different frequencies can only receive the data sent by the master station and cannot directly transmit data between the slave stations.
If you need to save frequency resources, you can choose the full-duplex transmission and reception co-frequency solution when the system has sufficient timeliness and processing speed. Program.