Miniature Pressure Temperature Humidity Smart Meter

Abstract

Provided is a micro pressure-temperature-humidity intelligent meter composed of a temperature sensor, a pressure sensor, a humidity sensor, a digital circuit, and a display portion. By means of the temperature change of a copper box, pressure change of a corrugated film on the pressure sensor changes the length of a mercury column in a capillary on a coil. The mercury column causes short circuit of a coil. The value of changed current in the coil is subjected to digital-to-analog conversion and the digital circuit displays a pressure value, a temperature value, and a humidity value on a liquid crystal panel. The copper box and the coil are pasted on a skeleton through epoxy resin and are fixed in a housing. No moving components are provided. The micro pressure-temperature-humidity intelligent meter has simple structure, utilizes digital technology, and is easy to be controlled in a concentrated manner and to display measured values through a network, and free of maintenance.

Description

[0001] Technical field [0002] The invention relates to a miniature intelligent meter for pressure, temperature and humidity, which is small in volume, good in reproducibility, fast in heat balance, anti-vibration and especially suitable for network display. Background technique [0003] In daily life, in industrial production, and in the natural environment, people need to keep abreast of changes in air pressure, temperature, and humidity. However, although pressure gauges, thermometers, and hygrometers are available and can be measured, they are fragile and difficult to read. Difficulty, the size cannot be miniaturized, and the network group measurement cannot be used, which limits its wider use in industry, agriculture, military affairs, and life. Contents of the invention [0004] In order to overcome the existing deficiencies, a miniature pressure, temperature and humidity smart meter is provided to people. It has 1. miniature structure, simple manufacture, 2. centrali...

AI Technical Summary

Problems solved by technology

[0003] In daily life, in industrial production, and in the natural environment, people need to keep abreast of changes in air pressure, temperature, and humidity. However, although pressure gauges, thermometers, and hygrometers are available and can be measured, they are fragile and difficult to read. Difficult, the size cannot be miniaturized, and network group measurement cannot be used, which limits its wider use in industry, agriculture, military affairs, and life

Images