Ultralow-power-consumption livestock body temperature monitoring system based on LoRa scattering communication

Abstract

The invention provides an ultralow-power-consumption livestock body temperature monitoring system based on LoRa scattering communication, thereby reducing the cost and power consumption of the monitoring device and reducing the size and weight of the device. The system is characterized in that the system comprises a plurality of monitoring devices which are used for periodically collecting the body temperatures of livestock and uploading the body temperature data in a LoRa scattering communication mode, an LoRa gateway for receiving the body temperature data uploaded by the monitoring devicesand forwarding the body temperature data to an upper system, and a radio frequency base station for providing 433MHz radio frequency signals for scattering communication for the monitoring devices inthe surrounding area. Each monitoring device comprises a waterproof shell, a PCB, a button cell, a temperature sensor and an FPC antenna. The PCBs, the button cells and the FPC antennas are fixed in the waterproof shells, an MCU, a voltage-controlled oscillator circuit, a radio frequency switch, a matching circuit, an antenna interface and a temperature sensor interface are integrated on each PCB,and each temperature sensor is arranged in a livestock ear canal and is connected to a temperature sensor interface of the PCB through a signal line.

Description

technical field [0001] The invention relates to an ultra-low power consumption livestock body temperature monitoring system based on LoRa scattering communication. Background technique [0002] In the livestock farming industry, where the health of the livestock is directly related to the output of the farm, the farm will help track the health of the animals by taking their body temperature. The traditional manual measurement is usually to measure the rectal temperature of livestock. This measurement method is inefficient and will cause a strong stress response of the livestock, which is likely to cause injury to the staff. This requires a more efficient and safer livestock body temperature monitoring solution . [0003] In the monitoring devices proposed by the Chinese patents "CN110806277A Pig Body Temperature Real-time Monitoring System" and "CN106175715A Ear Mounted Livestock Body Temperature Composite Detection Device", the wireless transceiver module adopts the tradit...

AI Technical Summary

Problems solved by technology

The traditional manual measurement is usually to measure the rectal temperature of livestock. This measurement method is inefficient and will cause a strong stress response of the livestock, which is likely to cause injury to the staff. This requires a more efficient and safer livestock body temperature monitoring solution

[0003] In the monitoring devices proposed by the Chinese patents "CN110806277A Pig Body Temperature Real-time Monitoring System" and "CN106175715A Ear Mounted Livestock Body Temperature Composite Detection Device", the wireless transceiver module adopts the traditional wireless communication method and needs to use an active communication chip. A large number of RF analog front-ends, high cost (the price of a single chip is usually around 10 RMB for the purchase of thousands of low-priced communication chips), and large power consumption (the sending current is generally 20mA to 300mA)

This method requires a large amount of calculation to realize CSS modulation, the software is complex, the program occupies a large space and requires several kilobytes of storage space to store the sequence of the highest bit of the phase accumulator. In order to meet the needs of storage space and calculation, a lower cost low Performance digital baseband processors such as MCU or FPGA, etc.

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