Ultra low power wireless data collection Solution

Introduction：

• The entire wireless system adopts the free measurement frequency band of ISM below 1GHz, which is simpler and more efficient compared to the 2.4GHz frequency band
  
• Low power consumption, battery powered
  
• The system's lifespan can range from several years to over ten years
  
• Star topology, many to one transmission
  
• Small size, convenient for users to embed devices
  

Receiving module

The receiving module APC250S (also known as RF4432) uses a high-performance microcontroller and ultra-high sensitivity wireless RF chip. The wireless transmission adopts efficient cyclic interleaving error correction coding, which can correct 24 bits of continuous burst errors and has strong anti-interference performance. By connecting with the control terminal, the sensor data status can be monitored in real-time, building a high standard and reliable wireless intelligent monitoring and warning system.

APC250S can transmit data to the control terminal for processing through wired connections such as RS232, RS484, M-BUS, Ethernet, or connecting GPRS devices. This system has a very high capacity. One transmission module can connect 255 transmission modules for multi to one data transmission. The transmission module adopts special random redundancy technology for transmission time, which ensures low power consumption and collection efficiency while effectively avoiding data conflicts and ensuring high reliability of data.

Transmit modules

The transmission module APC300 (also known as RF5150) is a highly integrated ultra-low power micro power sensor module that uses ultra-low power microcontrollers and high-performance low-power transmission chips. APC300 can not only communicate with standard UART ports, but also has a built-in 12bit high-precision ADC that supports direct connection to various mainstream temperature and humidity, pressure, liquid level, flow, and level sensors, such as DS18B20, PT1000, SHT21 thermistors, etc, Users do not need to write software for wireless and sensor components, nor do they need additional MCU and peripheral devices, greatly reducing the difficulty of system deployment.

APC300 can regularly collect sensor data and send it to APC250S, with a transmission distance of up to 700 meters. The module operates in the voltage range of 2.1-3.6V and has extremely low power consumption. When the transmission power consumption is 10dBm, the current consumption is only 14mA, and the sleep power consumption is as low as 1.5uA. By setting a reasonable collection cycle, a regular lithium-ion battery (such as ER18505) can have a working life of several years to more than ten years.

By setting different network addresses and communication frequencies, multiple sets of acquisition modules can be used simultaneously at the same location without mutual interference. The receiving module can collect data and transmit it to the computer for processing.