Humidity control device used for electric fan
A humidity control and electric fan technology, which is applied in heating and ventilation control systems, applications, household heating, etc., can solve the problem of not realizing humidity control, and achieve the effect of simple structure, easy implementation and low price.
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Embodiment 1
[0018] Such as figure 1 As shown, the present invention is composed of a humidity sensor 1, a humidity sensing circuit 2, a controller 3, a switch circuit 5 and a power circuit 4, and the power circuit 4 supplies power to the humidity sensing circuit 2, the controller 3, and the switch circuit 5. Such as figure 2 As shown, the humidity sensor 1 among the present invention can be made up of anode 11, cathode 12 two conductive electrodes and insulating substrate 13, anode 11, cathode 12 are made of conductive material, insulating substrate 13 is made of insulating material, anode 11 1. The cathode 12 is arranged on the insulating substrate 13 and connected to the humidity sensing circuit 2, the anode 11 is opposite to the cathode 12, and there is a gap between them. Its humidity sensing function is realized through the anode 11 and the cathode 12 , and when the humidity reaches the level of conducting the anode 11 and the cathode 12 , the humidity signal can be transmitted to ...
Embodiment 2
[0020] As shown in Figure 4, in this embodiment, the basic structure is the same as that of Embodiment 1, except that the controller 3 is a single-chip microcomputer U3, and correspondingly, the humidity sensing circuit 2 is adjusted to 21 parts in the figure, so as to achieve the control of electric current. The fan 6 is for the purpose of precise control. During work, the humidity situation that humidity sensor 1 senses, through the processing of humidity sensing circuit 2 (part 21 in the figure), generates the signal that can be recognized by single-chip microcomputer U3, and this signal passes through the acquisition data of software program in single-chip microcomputer U3, Eliminate error signals and other processes to accurately analyze the valid data to obtain accurate judgment results, which can determine the working state of the electric fan through the logic amplifier circuit 51 and relay 52 in the switch circuit 5 . The circuit composition of present embodiment and ...
Embodiment 3
[0022] As shown in FIG. 5 , in this embodiment, the basic structure is also the same as that of Embodiment 1, except that the switch circuit 5 is a triac 53 . Its circuit composition and working principle are: when there is no rainwater on the humidity sensor 1, its resistance can be regarded as infinite, the potential of the anode 11 is 0, and the potential of the cathode 12 is VCC×[R2÷(R2+R1)], greater than 0, that is, the potential of the anode 11 is lower than the potential of the cathode 12; on the contrary, when there is rain on the humidity sensor 1, its own resistance is small, and the potential of the anode 11 is VCC×[R2÷(R2+The resistance of the humidity sensor 1)], the cathode The potential of 12 is VCC×[R2÷(R2+R1)], and R1 is greater than the resistance of the humidity sensor when it rains, so the potential of anode 11 is greater than the potential of cathode 12 at this time; the potential of anode 11 and cathode 12 is input to the control Controller 3, the control...
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