A small high-precision atmospheric pressure measuring device and measuring method

Abstract

The invention discloses a miniature high-precision atmospheric pressure measuring device which comprises an atmospheric pressure sensor, a temperature sensor, a microcontroller chip and an LED displayscreen. The atmospheric pressure sensor, the temperature sensor and the LED display screen are connected with the microcontroller chip. The microcontroller chip makes the atmospheric pressure sensoracquire atmospheric pressure information and makes the temperature sensor acquire temperature information. The microcontroller chip receives serial data signals which are transmitted from the atmospheric pressure sensor and the temperature sensor and performs processing, thereby obtaining an atmospheric pressure initial value and a temperature value. Calculation is performed by means of the atmospheric pressure initial value and the temperature value for obtaining an atmospheric pressure value, and furthermore the atmospheric pressure value is displayed on the LED display screen. The miniaturehigh-precision atmospheric pressure measuring device realizes high-precision atmospheric pressure measurement and settles the problems of large size, complicated structure and inconvenient carrying in an existing atmospheric pressure measuring device. The miniature high-precision atmospheric pressure measuring device realizes simple structure and easy realization and furthermore can display the atmospheric value in real time.

Description

technical field [0001] The invention relates to the technical field of barometric pressure measurement, and more particularly, relates to a small-scale high-precision atmospheric pressure measurement system. Background technique [0002] The refractive index of a medium is one of the physical quantities that characterize the optical properties of a medium. The refractive index of air is related to atmospheric pressure and will change with the state of the atmosphere. This parameter is used in many scientific research fields, such as drawing wind tunnel airflow patterns and aerodynamic analysis of aircraft. Only the refractive index of air is approximated as 1 is far from meeting the requirements of scientific research, so in order to obtain accurate air refractive index values, high-precision measurement of atmospheric pressure is necessary. [0003] The traditional measurement methods of atmospheric pressure mainly include mercury barometer and mechanical vibrating cylinde...

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Problems solved by technology

[0004] Aiming at the prior art, the present invention provides a small-scale high-precision atmospheric pressure measurement device and measurement method, which solves the problems of the existing atmospheric pressure measurement devices with large volume, complex structure, and inconvenient portability. The system structure of the present invention is simple and easy to implement, and can be real-time Display the atmospheric pressure value

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