Capacitive humidity sensor
A humidity sensor and capacitive technology, applied in the field of sensors, can solve the problems of low measurement accuracy and single function of the humidity sensor, and achieve the effect of improving the speed and accuracy of measurement and increasing the contact area.
Inactive Publication Date: 2018-11-27
合肥云联电子科技有限公司
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Problems solved by technology
[0003] At present, the humidity sensor used in agricultural vegetable greenhouses has a single function, and can only simply measure the air humidity in the greenhouse, and the measurement accuracy is low
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Embodiment Construction
[0021] Such as Figure 1-Figure 4 As shown, a capacitive humidity sensor proposed by the present invention includes a main body box 1, a sleeve pipe 2, a screw mandrel 4, a push slider 5, a fan 23 and a solar panel 28, and the middle part of the lower end of the main body box 1 is provided with a sleeve pipe 2, And the sleeve pipe 2 is provided with a sliding chamber 6, the middle part of the bottom end of the main body box 1 is provided with a first motor 3, and the lower end of the first motor 3 is provided with a screw mandrel 4, and the lower end of the screw mandrel 4 runs through the bottom end of the main body box 1 and the sleeve respectively. The top of the tube 2, and the outer side of the screw rod 4 is provided with a push slider 5 in the slide chamber 6, the push slider 5 is slidably connected to the slide chamber 6, and the lower end of the push slider 5 is connected to the first slide rod 7, and the first slide rod 7 The lower end runs through the bottom end of ...
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The invention discloses a capacitive humidity sensor, comprising a main box, a sleeve, a screw, a push slider, a fan and a solar panel. The sleeve is arranged in the middle of the lower end of the main box; a sliding cavity is arranged in the sleeve; a first motor is arranged in the middle of the inner bottom end of the main box; the screw is arranged at the lower end of the first motor and runs through the bottom end of the main box and the top end of the sleeve; the push slider is nested in the sliding cavity outside the screw and is slidably connected with the sliding cavity. The capacitivehumidity sensor has the advantages that distances of a surface soil sensing portion, a medium soil sensing portion and a deep soil sensing portion can be adjusted through second and third sliding rods according to soil environments of various places, a column is fixed through a first fixing knob and a second fixing knob, the surface soil sensing portion, the medium soil sensing portion and the deep soil sensing portion are inserted to formations of corresponding depths by treading a footboard, and humidity of each formation of soil can be measured.
Description
technical field [0001] The invention relates to the technical field of sensors, in particular to a capacitive humidity sensor. Background technique [0002] Humidity sensors are widely used in meteorological detection, agricultural production, industrial control, medical equipment and other fields. In recent years, the development of humidity sensors tends to be more and more miniaturized. Existing miniature humidity sensor types mainly include capacitive, resistive, piezoresistive and MEMS. There are currently two types of wireless telemetry sensors: active telemetry and passive telemetry. Active telemetry means that the sensing system has a power source. This type of telemetry can transmit sensor signals in both directions over long distances, but the system is complex, large in size, and the battery needs to be replaced. Passive telemetry means that there is no power source in the sensing system, and the signal is acquired by inductive coupling or radio frequency refle...
Claims
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IPC IPC(8): G01N27/22
CPCG01N27/223
Inventor 陈虎
Owner 合肥云联电子科技有限公司