Portable meteorological measurement instrument signal calibration devices

Abstract

The invention discloses portable meteorological measurement instrument signal calibration devices. A device comprises a frequency collection circuit, a frequency division calibration circuit and an operational amplifier and filter circuit. The frequency collection circuit collects analog signal frequencies when a portable meteorological measurement instrument works. In-phase power amplification iscarried out on signals through application of an operational amplifier AR1, and then the signals are input into the frequency division calibration circuit. The frequency division calibration circuitcarries out frequency division processing on the signals through application of a frequency division circuit composed of an inductor L1, an inductor L2, a resistor R4, a resistor R5, a capacitor C2, acapacitor C3 and a capacitor C6. The operational amplifier and filter circuit carries out in-phase amplification on the signals through application of an operational amplifier AR3, filters the signals through application of a TT-shaped filter circuit composed of an inductor L4, a capacitor C8 and a capacitor C9, and then outputs the signals, namely, data signal potentials of a control terminal when the portable meteorological measurement instrument works are compensated. Data signal frequencies can be converted into compensation signals of data signals of the portable meteorological measurement instrument, and moreover, the signals are automatically calibrated.

Description

technical field [0001] The invention relates to the technical field of signal calibration, in particular to a signal calibration device for a portable meteorological measuring instrument. Background technique [0002] The main function of the portable weather station is to monitor meteorological elements. It can monitor wind speed, wind direction, rainfall, temperature, humidity, air pressure and other meteorological elements in real time, and provide users with timely reference data support! However, in reality, in harsh environments, especially in stormy conditions, during the transmission of the data signal used by the control terminal of the portable meteorological measuring instrument to analyze the signal, the data signal will often attenuate during the transmission process, resulting in the control terminal of the portable meteorological measuring instrument receiving The signal is distorted, seriously reducing the accuracy of the measurement results of the portable m...

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Problems solved by technology

[0002] The main function of the portable weather station is to monitor meteorological elements. It can monitor wind speed, wind direction, rainfall, temperature, humidity, air pressure and other meteorological elements in real time, and provide users with timely reference data support! However, in reality, in harsh environments, especially in stormy conditions, during the transmission of the data signal used by the control terminal of the portable meteorological measuring instrument to analyze the signal, the data signal will often attenuate during the transmission process, resulting in the control terminal of the portable meteorological measuring instrument receiving The signal is distorted, seriously reducing the accuracy of the measurement results of the portable meteorological measuring instrument

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