Fecha de publicación: 11/09/2020 Fuente: Wipo "IOT" The invention discloses a barn temperature monitoring device based on narrow-band Internet of Things. The barn temperature monitoring device comprises a temperature and humidity sensor and an NB-IOTterminal, wherein the NB-IOT terminal is linearly connected with a repeater; the repeater is linearly connected with a plurality of temperature and humidity sensors; the NB-IOT terminal is in networkconnection with a NB-IOT base station/NB-IOT management server and a management control center; a microprocessor is arranged in the NB-IOT terminal; the microprocessor is linearly connected with a reset module, a power supply module, an A/D module, a temperature and humidity acquisition module, a GPRS communication module, a UART module and a GPIO module. According to the invention, the NB-IOT terminal, the NB-IOT base station/NB-IOT management server and the management control center form a temperature and humidity acquisition control system; meanwhile, the NB-IOT is low in power consumptionand wide in coverage, has stability and reliability, can effectively process collected data, and achieves the real-time monitoring of temperature and humidity value parameters.