High-sensitive temperature and relative humidity indicator supporting NB-IoT

Abstract

The invention discloses a high-sensitive temperature and relative humidity indicator supporting NB-IoT, and relates to a civil digital temperature and relative humidity indicator which is high in sensitivity, high in stability, high in apparent accuracy, low in power consumption, capable of supporting Internet of things, and has the capacities of coordinating and closed-loop controlling an air-conditioner, a dehumidifier and a humidifier. The high-sensitive temperature and relative humidity indicator supporting NB-IoT comprises a dry-bulb quartz crystal probe, a wet-bulb quartz crystal probe,a water reservoir, a diversion fiber product, a micro fan, a satellite navigation system antenna, a satellite navigation system module, an ASIC, a NB-IoT chip, a NB-IoT antenna, a lithium ion chargeable battery and a charge interface, and a display and setting panel; relying on dry-bulb temperature and wet-bulb temperature with temperature measurement accuracy reaching 1mK, a high-precision and digitalized air psychrometric chart, atmospheric pressure correction provided by the satellite navigation system and a high-precision interpolation algorithm of cubic polynomial curve, a computation value of the relative humidity reaches five significant digits, and a display value reaches four significant digits, thereby sufficiently displaying the dynamic change of the indoor humidity, and controlling the dynamic change of the indoor temperature and relative humidity through the air-conditioner, the dehumidifier and the humidifier.

Description

(1) Technical field: [0001] The high sensitivity temperature hygrometer supporting NB-IoT of the present invention relates to a civilian high sensitivity, high stability, high apparent accuracy, low power consumption, supports the Internet of Things, and has the ability to coordinate closed-loop control of air conditioners, dehumidifiers, and humidifiers digital thermometer and hygrometer. (two) background technology: [0002] The International Practical Temperature Scale is based on specified values ​​of temperature at some reproducible equilibrium states (defining fixed points), and standard interpolating instruments graduated at these fixed points of the IPT. In 1968, the international practical temperature scale was divided into three temperature zones, and the temperature values ​​in these temperature zones were defined by standard platinum resistance thermometers, standard platinum-rhodium (10%) platinum thermocouples, and Planck's radiation law. [0003] The core com...

AI Technical Summary

Problems solved by technology

[0008] The temperature measurement error of the glass rod dry bulb wet bulb temperature hygrometer is about ±0.5K, and the humidity measurement error is about ±5%RH~±10%RH, which does not have the ability to apply the Internet; the mechanical temperature hygrometer uses a bimetallic sheet as the temperature sensor Components, metal hairsprings coated with polymer hydrophilic plastics as humidity sensitive components, its temperature measurement error is about ±1K~±2K, its humidity measurement error is about ±5%RH, and the time lag is particularly large, and it does not have Internet application capabilities ; The temperature measurement error of the electronic digital temperature hygrometer in the prior art is about ±0.3K, and the humidity measurement error after calibration is about ±3%RH, and the annual drift of its humidity measurement is as high as 2%RH. There are engineering examples using Bluetooth technology to control and start and stop air conditioners, dehumidifiers, and humidifiers

Images