Automatic meteorological station wind sensor anti-freezing control system with optoelectronic isolation function

Abstract

The invention discloses an automatic meteorological station wind sensor anti-freezing control system with the optoelectronic isolation function. The automatic meteorological station wind sensor anti-freezing control system is mainly composed of a single-chip microcomputer, a communication interface circuit and an optoelectronic isolation driving circuit, wherein the communication interface circuit and the optoelectronic isolation driving circuit are connected with the single-chip microcomputer. The communication interface circuit is connected with a parameter sampling circuit, the optoelectronic isolation driving circuit is connected with a heating circuit, the single-chip microcomputer, the communication interface circuit and the optoelectronic isolation driving circuit are all connected with a power management circuit, and the communication interface circuit and the parameter sampling circuit are further provided with command control circuits. The automatic meteorological station wind sensor anti-freezing control system has the advantages that the heating circuit is installed in a sensor and does not affect a wind flow field, mechanical friction influence is not generated, and therefore accuracy of observed data is not affected. The life expectancy and period of the heating circuit is more than two years, the system can be inspected and maintained according to the period of verification of an automatic meteorological station, and a resistance heating wire device is easy to replace and maintain and low in cost.

Description

technical field [0001] The invention relates to antifreeze control, in particular to an antifreeze control system with a wind sensor of an automatic weather station equipped with photoelectric isolation. Background technique [0002] In countries or regions with low temperature, such as Finland and other countries, the wind sensors of automatic weather stations usually use heating devices with a power of ≤4W, and only consider the temperature index. The heating device heats the wind sensor and melts the freezing of rime and rime on the wind sensor, but the effect is not very satisfactory in the operation of the pilot station in our country. comprehensive. Some people have studied the freezing damage of rain, smog and rime on the wind sensor of automatic weather station. It is believed that the icing and freezing of wind sensor is the result of comprehensive factors such as temperature, humidity, wind speed and other meteorological conditions. The basic conditions and chara...

AI Technical Summary

Problems solved by technology

[0002] In countries or regions with low temperature, such as Finland and other countries, the wind sensors of automatic weather stations usually use heating devices with a power of ≤4W, and only consider the temperature index. The heating device heats the wind sensor and melts the freezing of rime and rime on the wind sensor, but the effect is not very satisfactory in the operation of the pilot station in our country. comprehensive

Images