The wireless transceiver module is the wireless transmitting module and the wireless receiving module. The two must be paired and used, and the operating frequency must be exactly the same. The receiving module must be equipped with a decoding IC according to the encoding format of the transmitting part. The wireless transceiver module is a channel for transmitting data. After receiving the transmitted signal, the receiving module passes it to the decoding IC through the DA TA pin to let it work.
2.4G is a wireless technology, because its frequency band is between 2.400GHz~2.4835GHz, referred to as 2.4G wireless technology. The highly integrated chipset packaged based on 2.4G wireless technology is called a 2.4G wireless module, and the 2.4g wireless transceiver module is one of many 2.4G wireless modules. It is widely used in wireless remote controls, wireless headsets, and unmanned aerial vehicles. In industries and products such as computers, wireless keyboards, wireless monitoring, non-contact RF smart cards, small wireless data terminals, safety and fire prevention systems, wireless remote control systems, biosignal networks, hydrological and meteorological monitoring, etc.
What is the principle of 2.4g wireless transceiver module?
The purpose of wireless transmission is to liberate yourself and replace wired connections with wireless technology. How to replace? To put it simply, 2.4G wireless transmission transmits electromagnetic waves through the transmitting module sound source processing. The receiving module receives the electromagnetic waves radiated into the air by the transmitting module and transmits them to the speaker through digital-to-analog conversion.
ADC/DAC: Analog-to-Digital Converter/Digital-to-Analog Converter
MCU: Single-chip microcomputer (appropriate computer CPU)
FLASH: memory chip (appropriate to computer hard drive)
SDRAM: Synchronous dynamic random access memory (appropriate computer memory)
RF: radio frequency
PA: power amplifier
As shown in the figure above, the transmitting module collects the sound source and converts the analog signal into a digital signal through analog-to-digital conversion. After running and processing through the MCU code, that is, the central processor (MCU can integrate converters, power supplies, USB, memory and other peripheral interfaces On a chip) through RF radio frequency, digital signals are radiated into the air to form electrical waves. In order to obtain further transmission distance, the PA can be used to amplify the electromagnetic wave signal and finally be transmitted through the antenna. The receiving module antenna receives the electromagnetic waves emitted by the transmitting module, and the signal is amplified by the PA and converted into a digital signal through RF. It is also processed by the MCU and finally converted into an analog signal through a digital-to-analog signal to transmit the sound through the speaker. A complete wireless transmission principle might interfere with this. Of course, both the transmitting module and the receiving module need to be powered by power. The sound source of the receiving module can be used with the 3.5L line in interface or the built-in microphone.
What is the effect of 2.4g wireless transceiver module?
1. Used to form a wireless communication network with star topology
The 2.4g wireless transceiver module forms a multi-point star topology, and some special places require wireless communication. On the one hand, this kind of transmitting and receiving module is cheap, and the cost of forming a star topology is relatively low; on the other hand, this kind of transmitting and receiving module can adopt a modular design, which is small in size, easy to use, and easy to integrate. This transmitting and receiving module is very useful for wireless networks with low communication speed requirements and short distances.
2. Used for wireless multi-channel (parallel) control
For example, complex remote control robots, etc., require multi-channel (parallel) control in some places. One method is to use the receiving module to connect directly to the decoder, and then connect it to relays and other electronic components to drive subsequent controlled objects; the other method is to use the receiving module to connect to the microcontroller, and after processing the data, use The microcontroller is connected to electronic components such as relays to drive subsequent controlled objects. Generally, a pair of transmitting and receiving modules can easily achieve up to six parallel wireless controls. If the required number of channels is greater than six, multiple pairs of transmitting and receiving modules can be used to work together to meet actual needs.
3. Used for universal serial port (RS232 wireless data transmission)
Generally, there are many control instruments and equipment that use serial ports, and communication with these devices must meet the serial port requirements. Some special places, industrial control sites. When wireless transmission must be used, it is natural to choose the transmitting and receiving modules mentioned in this article. However, it is painfully explained here that in order to use this communication method, corresponding software must be prepared at the transmitter and receiver to complete the conversion of the file format before the purpose of wireless communication can be achieved. If the communication system is full-duplex, then it can Use two shooting and receiving modules to work together to complete.
The above interference 2.4G wireless transceiver module’s working principle and effect are introduced. Keywords: cost-effective 4G RTU