How to use the wireless rf module

How to use the wireless rf module?

When can we use the wireless rf module, the following will analyze the specific usage scenarios of the wireless rf module.

1. The wireless rf moduleis used to form a wireless communication network with a star topology

It must be a multi-point star topology, such as some specific places that require wireless communication. On the one hand, the price of the transmitting and receiving modules is low, and the cost of forming a star topology is relatively low. For wireless networks with low communication speed requirements and relatively short distances, the transmitter and receiver modules are very practical.

2. The wireless rf moduleis used for wireless multi-channel (parallel) control

Such as complex remote control robots, etc., some places require multi-channel (parallel) control. One method is to use the receiving module to directly connect with the decoder, and then connect it with electronic components such as relays to drive the subsequent controlled objects. Another method is to use the receiving module to connect with the single-chip microcomputer. After the data is processed, the single-chip computer is used to connect electronic components such as relays to drive the subsequent controlled objects. Usually, a pair of transmitter and receiver modules can realize up to six parallel wireless control. If the required number of channels is greater than six, multiple pairs of transmitter and receiver modules can be used to work at the same time to meet the actual needs.

3. The wireless rf moduleis used for general serial port wireless data transmission

There are usually many control instruments and devices using serial ports, and communication with these devices must meet the serial port requirements. Some specific places, such as industrial control sites. When the wireless transmission method must be used, the wireless rf module can be selected. However, it must be explained here that to adopt this communication method, it is necessary to compile corresponding software at the transmitter and receiver to realize the conversion of file formats, in order to achieve the purpose of wireless communication. If the communication system is full-duplex, it can be It is realized by using two pairs of shooting and receiving modules to work at the same time.

Tips for using the wireless rf module

The use of the wireless rf module is selected according to the effect to be achieved by the actual development. There are still some tricks in the process.

1. The transmission interval of the wireless transmitter module will be affected by the frequency and amplitude of the modulated signal, voltage, battery capacity, antenna placement direction, and the sending and receiving environment.

2. It is best to install the wireless transmitter module vertically on the edge of the main board, and separate the surrounding devices by more than 5mm to avoid the influence of dispersion parameters.

3. Generally, the maximum transmission interval in the open area is about 800 meters. In the case of obstacles, the interval will be extended. Due to the refraction and reflection in the process of radio signal transmission, some dead zones and non-fluctuation areas will be formed. Different send and receive intervals.

4. The data level should be close to the actual working voltage of the wireless transmitter module to achieve a higher modulation effect.