Grain and cotton warehouse exaggerated humidity automatic ventilating and language admonishment circuit

Published:2011/4/27 9:16:00 Author:Nicole | Keyword: grain warehouse, cotton warehouse, automatic ventilating, language admonishment | From:SeekIC

The circuit is as shown, it is composed of humidity sensitivity electric bridge network, comparison circuit, relay control ventilating circuit, language phonation circuit and AC depressurization rectifier circuit . When the warehouse hunidity is exaggerated, the circuit will automatically connect to ventilating fan, and send out admonishment language, to remind the personnel on duty of taking a note. RH is humidity sensor,a bridge testing humidity network is composed of RH, RP1, R1, R2. When the environmental humidity is within the normal range, sensor RH has a large resistance.



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