Application and evaluation of wireless data transmission module

　　Data transmission can be simply divided into wired (including erecting optical cables, cables or renting special telecommunication lines) and wireless (including establishing special wireless data transmission system or borrowing CDPD, GSM, CDMA and other public network information platforms).

　　In comparison, the establishment of special wireless data transmission mode with wireless data transmission module has the following advantages over other modes. The following describes the advantages of establishing special wireless data transmission mode with wireless data transmission module compared with wired communication.

　　1. Low cost

　　The establishment of wired communication must erect cables or dig cable trenches, so it requires a lot of manpower and material resources; The establishment of special wireless data transmission mode with wireless data transmission station does not need to erect cables or dig cable trenches. It only needs to connect wireless data transmission station and erect antenna of appropriate height at each terminal. In contrast, using wireless data transmission module to establish a special wireless data transmission mode saves human and material resources, and the investment is quite saved. Of course, in some short-range data communication systems, the cost of wireless communication is not lower than that of wired communication, but sometimes the actual field environment is difficult to wiring, and customers will still choose wireless communication according to the needs of the field environment.

　　2. Short construction period

　　When it is necessary to connect and communicate with remote stations several kilometers to tens of kilometers away, long-distance cables must be erected or long cable trenches must be excavated by using wired method. This project cycle may take several months, while the establishment of special wireless data transmission mode by using data transmission module only requires the erection of antenna with appropriate height, The project cycle only takes a few days or weeks. In contrast, the wireless way can quickly build communication links, and the project cycle is greatly shortened.

　　3. Good adaptability

　　Wired communication has too many limitations. When encountering some special application environments, such as special geographical environments such as mountains, lakes and forest areas, or application environments with difficult wiring such as mobile objects, it will have a strong restriction on the wiring engineering of wired network, and the establishment of special wireless data transmission mode with wireless data transmission module will not be subject to these restrictions, Therefore, using wireless data transmission module to establish a special wireless data transmission mode will have better and wider adaptability than wired communication, which is almost not limited by geographical environment.

　　4. Good scalability

　　After users set up a communication network, new equipment is often added because of the need of the system. If the wired mode is adopted, it needs to be rewired, the construction is troublesome, and the original communication line may be damaged. However, if the wireless data transmission station is used to establish a special wireless data transmission mode, the expansion of the system can be realized by connecting the new equipment with the wireless data transmission station, which has better expansibility.

　　5. Easier to implement in equipment maintenance

　　The maintenance of wired communication link needs to be checked along the line. In case of failure, it is generally difficult to find out the failure point in time. However, the establishment of special wireless data transmission mode by using wireless data transmission module only needs to maintain the data transmission module. In case of failure, it can quickly find out the cause and restore the normal operation of the line.