Method and device for calibrating dynamic response characteristic of sonde humidity by double flow method

Abstract

The invention discloses a method and a device for calibrating a dynamic response characteristic of sonde humidity by a double flow method. The method includes that a sonde test chamber with given relative humidity is arranged, a humidity detected value of the sonde is real-timely received and recorded, gases with the given relative humidity are formed by uniformly mixing one way of a known amount of dry nitrogen and another way of a known amount of saturated humidity nitrogen, the nitrogen and the test chamber, both with the given relative humidity, have same environment temperatures which can simulate a lift-off state of the sonde, and the test chamber has a pressure environment which can simulate a high lift-off state of the sonde. The device comprises a control system, a water bath tank, the test chamber, an electrical control adjusting valve, a vacuum pump, a first gas inlet pipeline, a second gas inlet pipeline and the like, and the first gas inlet pipeline and the second gas inlet pipeline are respectively used for providing dry nitrogen and saturated humidity nitrogen which are provided with set amount. The method and the device for calibrating the dynamic response characteristic of the sonde humidity by the double flow method have the advantages that the calibration by the calibration method is accurate, the manufacturing is simple, the calibration efficiency is high, the calibration device is simple in structure, a reliable simulated lift-off environment can be provided for the sonde, and the accurate calibration can be guaranteed.

Description

technical field [0001] The invention relates to a calibration calibration technology for a humidity detector, in particular to a method and device for calibrating the humidity dynamic response characteristics of a radiosonde by a double-flow method. Background technique [0002] Radiosonde refers to the general term for instruments that measure various elements of the free atmosphere by carrying sensors or radio telemetry methods. Radiosondes, carried on board weather balloons, measure a number of atmospheric parameters and transmit the data by radio back to receiving stations on the ground. Contemporary radiosondes communicate via radio with computers on the ground, which store the returned data in real time. Important data measured by radiosondes include atmospheric pressure, altitude, latitude and longitude, temperature, relative humidity, wind speed and direction, etc. Since the radiosonde moves upward with the balloon at a speed of 300-400 m / min, it is impossible to s...

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Problems solved by technology

[0004] The first purpose of the present invention is aimed at the deficiencies in the prior art, to provide a kind of method of dual-flow method calibration airsonde humidity dynamic response characteristic, this calibration method is by providing a dynamic environment of simulation airsonde lift-off process to airsonde Dynamic calibration of humidity dynamic response characteristics to solve the problem of long and inaccurate calibration of radiosonde humidity

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