CN105486729A - Humidity sensor - Google Patents
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- CN105486729A CN105486729A CN201610030910.3A CN201610030910A CN105486729A CN 105486729 A CN105486729 A CN 105486729A CN 201610030910 A CN201610030910 A CN 201610030910A CN 105486729 A CN105486729 A CN 105486729A
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- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/22—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance
- G01N27/223—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance for determining moisture content, e.g. humidity
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Abstract
The invention provides a humidity sensor which comprises a cylinder, insulating rings, arc conducting plates and conducting wires, wherein the cylinder is used for supporting the insulating rings; corresponding circuits for transmitting electric signals are arranged on the cylinder; the arc conducting plates are arranged on the insulating rings at intervals; the conducting wires are positioned at the head and the tail of the adjacent arc conducting plates; the insulating rings comprises the first insulating ring, the second insulating ring, the third insulating ring and the fourth insulating ring in sequence; the arc conducting plates on the first insulating ring and the second insulating ring are in one-to-one correspondence, and are used for forming a first capacitor when being connected with an electric circuit; the arc conducting plates on the third insulating ring and the fourth insulating ring are in complementation dislocation; the arc conducting plates of the fourth insulating ring and the third insulating ring are in one-to-one correspondence, and are used for forming a second capacitor when being connected with the electric circuit; the first capacitor and the second capacitor are used for converting humidity signals into electric signals. According to the humidity sensor, the interval distance of humidity detecting point is less than or equal to the first threshold value, and the continuity is good.
Description
Technical field
The invention belongs to sensor technical field, particularly relate to a kind of humidity sensor.
Background technology
Soil moisture is a key parameter of soil, the important indicator that Ye Shi agricultural sector pays close attention to.Soil moisture can affect field weather, soil aeration and decompose of nutrient.Especially, to cultivate or in plantation, soil moisture directly determines the upgrowth situation of plant, output or quality hot house plant.Meanwhile, meteorological department also needs this parameter measure meteorology change.Further, agricultural sector or meteorological department need the soil moisture data of different depth, using the reference of cultivating as plant or meteorological research.So the importance of soil moisture continuous detecting is particularly outstanding.
Although, there is humidity sensor in the market, can detect the humidity of soil, it is excessive that the humidity sensor deposited detects spacing, cannot meet the demand of practical application.Generally traditional humidity sensor is the round metal band of column arranging far and near different spacing on the cylinder, when circuit is communicated with, connect the positive and negative electrode of voltage between two round metal band of columns that spacing distance is nearer respectively, can electric capacity be formed, the moisture signal of collection is converted to electric signal.Distance between two round metal band of columns that spacing distance is far away is the spacing between adjacent capacitor.Right cylinder is arranged corresponding circuit, carry out electric signal transmission.But the spacing minor increment of general adjacent capacitor is 10 centimetres, the spacing of the check point when carrying out Humidity Detection is too large, especially, when close to soil surface top place's humidity collection, and the more intensive demand that more can meet user in monitoring point.The spacing of check point is too large, and humidity data collection is restricted, cannot practical requirement.If spacing between electric capacity reduces, then can produce interference between the upper bottom crown of electric capacity each other, as the edge effect of electric capacity, electric field line is no longer lineal layout, affects Humidity Detection.
Summary of the invention
The present invention is intended to propose a kind of humidity sensor, and the spacing distance that this humidity sensor can realize check point is less than or equal to first threshold.
The invention provides a kind of humidity sensor, this humidity sensor comprises right cylinder, dead ring, arc-shaped conductive film and wire, and right cylinder for supporting multiple dead ring, and is provided with the circuit of respective transmissions electric signal.Dead ring is interval with multiple arc-shaped conductive film, wire is positioned at the head and the tail place of adjacent arc-shaped conductive film, for connecting arc-shaped conductive film adjacent one another are, forms conducting ring.Dead ring comprises the first dead ring, the second dead ring, the 3rd dead ring and the 4th dead ring successively, the arc-shaped conductive film phase one_to_one corresponding of the first dead ring and the second dead ring is placed, during for connection circuit, form the first electric capacity, the arc-shaped conductive film of the 3rd dead ring and the second dead ring mutually complementary dislocation is placed, the arc-shaped conductive film phase one_to_one corresponding of the 4th dead ring and the 3rd dead ring is placed, during for connection circuit, form the second electric capacity, the spacing distance of the first electric capacity and the second electric capacity is setting value A, and setting value A is less than or equal to first threshold.First electric capacity and the second electric capacity are for changing moisture signal into electric signal.
Further, this humidity sensor also comprises the 5th dead ring and the 6th dead ring, and the arc-shaped conductive film of the 5th dead ring and the 4th dead ring mutually complementary dislocation is placed, and the arc-shaped conductive film phase one_to_one corresponding of the 6th dead ring and the 5th dead ring is placed, during for connection circuit, form the 3rd electric capacity.The spacing distance of the 3rd electric capacity and the second electric capacity is setting value A.
Further, this sensor also comprises the 5th conducting ring and the 6th conducting ring, during for connection circuit, forms the 4th electric capacity; The spacing distance of the 4th electric capacity and the 3rd electric capacity is the second setting value B, and the second setting value B is more than or equal to Second Threshold.
Further, setting value A sets according to the ratio of the circumference of dead ring and the length of arc-shaped conductive film.
Further, arc-shaped conductive film length is identical with gap length on dead ring.
Further, the thickness of arc-shaped conductive film is preset value.
Further, the thickness of arc-shaped conductive film is more than or equal to 3 millimeters.
Further, the spacing distance of the first dead ring and the second dead ring is M, and the thickness of arc-shaped conductive film is N, and the spacing distance of the 3rd dead ring and the 4th dead ring is M/2, and the thickness of arc-shaped conductive film is 2N.
Further, the material of arc-shaped conductive film is red copper.
Further, first threshold is 5 centimetres.
Humidity sensor of the present invention, by arranging the placement location between the length of arc-shaped conductive film and dead ring, avoiding the interference between electric capacity, realizing reducing of detecting distance.The arc-shaped conductive film phase one_to_one corresponding of the first dead ring and the second dead ring is placed, and during for connection circuit, forms the first electric capacity.The arc-shaped conductive film of the 3rd dead ring and the second dead ring mutually complementary dislocation is placed, and the arc-shaped conductive film phase one_to_one corresponding of the 4th dead ring and the 3rd dead ring is placed, and during for connection circuit, forms the second electric capacity.Due to the 3rd dead ring and the arc-shaped conductive film complementary dislocation placement mutually of the second dead ring, the electric capacity of each self-forming of second and third dead ring also staggers mutually, electric field line is interference-free each other, thus allows the first electric capacity of setting and the second capacitance interval distance to be less than or equal to first threshold.When the circuit of humidity sensor is communicated with, the circuit communication at arc-shaped conductive film place, the moisture signal detected is converted to electric signal by the first electric capacity and described second electric capacity, and is transmitted by cylindrical circuit, complete Humidity Detection, realize the Humidity Detection point of more closely-spaced distance.
Therefore, the spacing distance that humidity sensor of the present invention can realize check point is less than or equal to first threshold.
Accompanying drawing explanation
Fig. 1 is the structural representation of the humidity sensor that first embodiment of the invention provides;
Fig. 2 is the schematic diagram of the part-structure of first embodiment of the invention humidity sensor;
Fig. 3 is the position view of the part-structure of first embodiment of the invention humidity sensor;
Fig. 4 is the structural representation of the humidity sensor that second embodiment of the invention provides;
Fig. 5 is the schematic diagram of the part-structure of second embodiment of the invention humidity sensor;
Fig. 6 is the position view of the part-structure of second embodiment of the invention humidity sensor;
Fig. 7 is the structural representation of the humidity sensor that third embodiment of the invention provides;
Fig. 8 is the schematic diagram of the part-structure of third embodiment of the invention humidity sensor;
Fig. 9 is the position view of the part-structure of third embodiment of the invention humidity sensor;
Figure 10 is the structural representation of the humidity sensor that four embodiment of the invention provides;
Figure 11 is the schematic diagram of the part-structure of four embodiment of the invention humidity sensor;
Figure 12 is the structural representation of the humidity sensor that fifth embodiment of the invention provides;
Figure 13 is the schematic diagram of the part-structure of fifth embodiment of the invention humidity sensor;
Figure 14 is the position view of the part-structure of fifth embodiment of the invention humidity sensor;
Figure 15 is the schematic diagram of the part-structure of sixth embodiment of the invention humidity sensor;
Figure 16 is the position view of the part-structure of sixth embodiment of the invention humidity sensor;
Figure 17 is the position view of the part-structure of seventh embodiment of the invention humidity sensor;
Figure 18 is the structural representation of the arc-shaped conductive film of seventh embodiment of the invention humidity sensor.
Embodiment
Further illustrate the present invention below by specific embodiment, but should be understood to, these embodiments are only used for the use specifically described more in detail, and should not be construed as limiting the present invention in any form.
As shown in Figure 1, the humidity sensor of the present embodiment comprises right cylinder 1, dead ring, arc-shaped conductive film 3 and wire 4, and right cylinder 1 for supporting multiple dead ring, and is provided with the circuit 11 of respective transmissions electric signal.Dead ring is interval with multiple arc-shaped conductive film 3, in this case four dead rings, each dead ring is provided with four arc-shaped conductive films 3.Wire 4 is positioned at the head and the tail place of adjacent arc-shaped conductive film 3, for connecting arc-shaped conductive film 3 adjacent one another are, forms conducting ring.Composition graphs 2 or Fig. 3, dead ring comprises the first dead ring 21, second dead ring 22, the 3rd dead ring 23 and the 4th dead ring 24 successively, arc-shaped conductive film 3 phase one_to_one corresponding on first dead ring 21 and the second dead ring 22 is placed, during for connection circuit, form the first electric capacity, 3rd dead ring 23 and the arc-shaped conductive film 3 on the second dead ring 22 mutually complementary dislocation are placed, namely the arc-shaped conductive film 3 of the 3rd dead ring 23 and the arc-shaped conductive film 3 of the second dead ring 22 staggered, offset one from another.Arc-shaped conductive film 3 phase one_to_one corresponding on 4th dead ring 24 and the 3rd dead ring 23 is placed, and during for connection circuit, form the second electric capacity, the spacing distance of the first electric capacity and the second electric capacity is setting value A, and setting value A is less than or equal to first threshold.First electric capacity and the second electric capacity are for changing moisture signal into electric signal.
Humidity sensor of the present invention, by arranging the relative position between the length of arc-shaped conductive film 3 and dead ring, to avoid the interference between electric capacity, realizes the spacing distance reduced between Humidity Detection point.The arc-shaped conductive film 3 phase one_to_one corresponding of the first dead ring 21 and the second dead ring 22 is placed, and during for connection circuit, forms the first electric capacity.Composition graphs 3, the arc-shaped conductive film 3 of the 3rd dead ring 23 and the second dead ring 22 mutually complementary dislocation is placed, namely the arc-shaped conductive film 3 of the 3rd dead ring 23 and the arc-shaped conductive film 3 of the second dead ring 22 staggered, offset one from another.The arc-shaped conductive film 3 phase one_to_one corresponding of the 4th dead ring 24 and the 3rd dead ring 23 is placed, and during for connection circuit, forms the second electric capacity.Due to the 3rd dead ring 23 and the arc-shaped conductive film 3 complementary dislocation placement mutually of the second dead ring 22, the electric capacity of each self-forming of second and third dead ring also staggers mutually, electric field line is interference-free each other, arc-shaped conductive film 3 on second and third dead ring can not form electric capacity again, and Humidity Detection can not be affected again.Thus allow the spacing distance of the first electric capacity and the second electric capacity to be setting value A, setting value A is less than or equal to first threshold.When the circuit of humidity sensor is communicated with, the circuit communication at arc-shaped conductive film 3 place, forms electric capacity, the moisture signal detected is converted to electric signal, and transmitted by the circuit 11 of right cylinder 1, complete Humidity Detection, realize the Humidity Detection point of more closely-spaced distance.
Therefore, the spacing distance that humidity sensor of the present invention can realize between reduction Humidity Detection point is less than or equal to first threshold.
As shown in Figure 4, the humidity sensor of the present embodiment comprises right cylinder 1, dead ring, arc-shaped conductive film 3 and wire 4, and right cylinder for supporting multiple dead ring, and is provided with the circuit 11 of respective transmissions electric signal.Dead ring is interval with multiple arc-shaped conductive film 3, the humidity sensor of the present embodiment also comprises the 5th dead ring 25 and the 6th dead ring 26, and in this case six dead rings, each dead ring is provided with two arc-shaped conductive films 3.Wire 4 is positioned at the head and the tail place of adjacent arc-shaped conductive film 3, for connecting arc-shaped conductive film 3 adjacent one another are, forms conducting ring.Composition graphs 5 or Fig. 6, dead ring is six, and the arc-shaped conductive film 3 phase one_to_one corresponding of the first dead ring 21 and the second dead ring 22 is placed, and during for connection circuit, forms the first electric capacity.The arc-shaped conductive film 3 of the 3rd dead ring 23 and the second dead ring 22 mutually complementary dislocation is placed, and the arc-shaped conductive film 3 phase one_to_one corresponding of the 4th dead ring 24 and the 3rd dead ring 23 is placed, and during for connection circuit, forms the second electric capacity.The arc-shaped conductive film 3 of the 5th dead ring 25 and the 4th dead ring 24 mutually complementary dislocation is placed, and the arc-shaped conductive film 3 phase one_to_one corresponding of the 5th dead ring 25 and the 6th dead ring 26 is placed, and during for connection circuit, forms the 3rd electric capacity.The length of arc-shaped conductive film is the 1/3rd, first electric capacity of whole dead ring girth, the spacing distance of the second electric capacity and the 3rd electric capacity is setting value A, and setting value A is less than 5 centimetres, and be more than or equal to 3.5 centimetres identical.Electric capacity is for changing moisture signal into electric signal.Due to the first dead ring 21, the 3rd dead ring 23 and the 5th dead ring 25 arc-shaped conductive film 3 mutually complementary dislocation place, the arc-shaped conductive film 3 namely on three dead rings staggers mutually, complimentary to one anotherly circularizes.So, when arc-shaped conductive film 3 circuit communication, the electric capacity of their each self-formings also staggers mutually, electric field line is interference-free each other, electric capacity can not be formed again between arc-shaped conductive film 3 on second and third dead ring, equally, between the arc-shaped conductive film 3 on fourth, fifth dead ring, also can not form electric capacity again, would not be subject to interfering with each other when carrying out Humidity Detection, Humidity Detection would not be affected.Thus, allow the first electric capacity, the second electric capacity identical with the spacing distance of the 3rd electric capacity, be setting value A, and the length of arc-shaped conductive film on single annulus is 1/3rd of whole annulus length, allow setting value A to be less than the first threshold.When the circuit of humidity sensor is communicated with, the circuit communication at arc-shaped conductive film 3 place, forms electric capacity, the moisture signal detected is converted to electric signal, and transmitted by the circuit 11 of right cylinder 1, complete Humidity Detection, realize the Humidity Detection point of more closely-spaced distance.
Therefore, the spacing distance that the present embodiment humidity sensor can realize between Humidity Detection point is less than first threshold, and the continuity of Humidity Detection is higher.
As shown in Figure 7, the humidity sensor of the present embodiment comprises right cylinder 1, dead ring, arc-shaped conductive film 3 and wire 4, and right cylinder 1 for supporting multiple dead ring, and is provided with the circuit 11 of respective transmissions electric signal.Dead ring is interval with multiple arc-shaped conductive film 3, in this case four dead rings, each dead ring can also be provided with two arc-shaped conductive films 3, arc-shaped conductive film 3 length is identical with gap length on dead ring.Composition graphs 8 or Fig. 9, dead ring comprises the first dead ring 21, second dead ring 22, the 3rd dead ring 23 and the 4th dead ring 24 successively, the arc-shaped conductive film 3 phase one_to_one corresponding of the first dead ring 21 and the second dead ring 22 is placed, during for connection circuit, form the first electric capacity, the arc-shaped conductive film 3 of the 3rd dead ring 23 and the second dead ring 22 mutually complementary dislocation is placed, the arc-shaped conductive film 3 phase one_to_one corresponding of the 4th dead ring 24 and the 3rd dead ring 23 is placed, during for connection circuit, form the second electric capacity, the spacing distance of the first electric capacity and the second electric capacity is 5 centimetres.Due to the 3rd dead ring 23 and the arc-shaped conductive film 3 complementary dislocation placement mutually of the second dead ring 22, the electric capacity of each self-forming of second and third dead ring also staggers mutually, electric field line is interference-free each other, arc-shaped conductive film 3 on second and third dead ring can not form electric capacity again, and Humidity Detection can not be affected again.Thus, allow the spacing distance of the first electric capacity and the second electric capacity to be 5 centimetres,
Therefore, the number of the arc-shaped conductive film of the present embodiment humidity sensor can be two, can also be three or more, can realize the humidity measuring grain in soil, coal seam or silo equally, and the spacing distance between check point is 5 centimetres.
As shown in Figure 10, the humidity sensor of the present embodiment also comprises the 5th conducting ring 251 and the 6th conducting ring 261, during for connection circuit, forms the 4th electric capacity.The spacing distance of the 4th electric capacity and the 3rd electric capacity is the second setting value B, and the second setting value B is more than or equal to Second Threshold.Second Threshold is 10 centimetres.In conjunction with Figure 11, the 5th conducting ring 251 and the 6th conducting ring 261 are monolithic conductive rings.Because the spacing distance of the 4th electric capacity and the 3rd electric capacity is more than or equal to 10 centimetres.When spacing distance is more than or equal to 10 centimetres, spacing distance is enough large, and allow the 5th conducting ring 251 and the 6th conducting ring 261 to be monolithic conductive rings, electric field line is interference-free each other.
Therefore, when the capacitance interval distance of the present embodiment humidity sensor is different, also can realizes the humidity measuring grain in soil, coal seam or silo, can according to the actual requirements, adjust accordingly.
As shown in figure 12, the humidity sensor of the present embodiment also comprises the 5th dead ring 25 and the 6th dead ring 26, in conjunction with Figure 13 or Figure 14, the arc-shaped conductive film 3 of the 5th dead ring 25 and the 4th dead ring 24 mutually complementary dislocation is placed, the arc-shaped conductive film 3 phase one_to_one corresponding of the 6th dead ring 26 and the 5th dead ring 25 is placed, and arc-shaped conductive film 3 length is identical with gap length on dead ring, during for connection circuit, form the 3rd electric capacity.The spacing distance of the 3rd electric capacity and the second electric capacity is setting value A.Due to the 5th dead ring 25 and the arc-shaped conductive film 3 complementary dislocation placement mutually of the 4th dead ring 24, the electric capacity of each self-forming of fourth, fifth dead ring also staggers mutually, electric field line is interference-free each other, arc-shaped conductive film 3 on fourth, fifth dead ring can not form electric capacity again, and Humidity Detection can not be affected again.Thus the spacing distance allowing the 3rd electric capacity and the second electric capacity is that setting value A equals 5 centimetres.When the circuit of humidity sensor is communicated with, the circuit communication at arc-shaped conductive film 3 place, forms electric capacity, the moisture signal detected is converted to electric signal, and transmitted by the circuit 11 of right cylinder 1, complete Humidity Detection, realize the Humidity Detection point of more closely-spaced distance.Therefore, the capacitance interval of the present embodiment humidity sensor is apart from identical, and spacing distance is less than or equal to 5 centimetres, and to the Humidity Detection of grain in soil, coal seam or silo, the distance range of detection is longer.
Based on above-mentioned any embodiment humidity sensor, further, setting value A sets according to the ratio of the length of the circumference of dead ring and arc-shaped conductive film 3, and the ratio of the circumference of dead ring and the length of arc-shaped conductive film 3 is larger, and setting value A is less.Composition graphs 3, when dead ring Zhou Changdu is the twice of the length of arc-shaped conductive film 3, setting value A can reach 5 centimetres, and the minimum spacing that realizes of the check point of the humidity sensor of the present embodiment equals 5 centimetres.Composition graphs 5, when dead ring Zhou Changdu is three times of the length of arc-shaped conductive film 3, setting value A can be less than 5 centimetres, and is greater than 3.5 centimetres.The minimum spacing that the humidity sensor of the present embodiment can realize Humidity Detection point is less than 5 centimetres.
In conjunction with Figure 16,3rd dead ring 23 and the 4th dead ring arrange four arc-shaped conductive films 3 all respectively, the arc-shaped conductive film 3 phase one_to_one corresponding of the 3rd dead ring 23 and the 4th dead ring is placed, arc-shaped conductive film 3 length on third and fourth dead ring is slightly less than gap length on dead ring, and arc-shaped conductive film 3 length namely on the 3rd dead ring 23 is slightly less than the arc-shaped conductive film on the second dead ring 22.The arc-shaped conductive film 3 of the 3rd dead ring 23 and the second dead ring 22 mutually complementary dislocation is placed.In conjunction with Figure 15, the placement relation of the first dead ring 21 and the second dead ring 22 is constant, arc-shaped conductive film 3 due to the 3rd dead ring 23 and the second dead ring 22 staggers placement mutually, the electric capacity of each self-forming of second and third dead ring also staggers mutually, electric field line is interference-free each other, arc-shaped conductive film 3 on second and third dead ring can not form electric capacity again, and appropriateness detects and can not be affected again.Thus, allow the center minimum separation distances of the first dead ring 21 and the 3rd dead ring 23 to equal 5 centimetres.
In order to realize the accuracy of Humidity Detection further, composition graphs 1, the wire 4 of the humidity sensor of the present embodiment is positioned at the edge of dead ring, i.e. the lower limb of the first dead ring 21, or the coboundary of the second dead ring 22.Electric capacity can be formed between arc-shaped conductive film 4 on first dead ring 21 and the second dead ring 22, wire 4 on first and second dead ring forms the side of electric capacity as far as possible near arc-shaped conductive film 3, away from the arc-shaped conductive film 3 on the 3rd dead ring 23, can more effectively avoid forming electric capacity between the arc-shaped conductive film 3 on the arc-shaped conductive film 3 on the second dead ring 22 and the 3rd dead ring 23, prevent capacitance interference, the degree of accuracy of Humidity Detection is better.Meanwhile, the thickness of arc-shaped conductive film 3 is preset values, needs to make corresponding adjustment according to the circumference of dead ring to the length of arc-shaped conductive film 3.Namely the gauge of arc-shaped conductive film 3 needs to compensate, when constant arc-shaped conductive film 3 vertical direction area and vertical two a pair arc-shaped conductive film 3 spacing are constant, because area of detection reduces, the thickness of arc-shaped conductive film needs to adjust accordingly thickening.The circumference of dead ring and the ratio of arc-shaped conductive film 3 length larger, the thickness of arc-shaped conductive film 3 is larger, or setting value A is less, and the thickness of arc-shaped conductive film 3 is larger.When the circumference of dead ring is the twice of arc-shaped conductive film 3 length, the thickness of mutual conducting strip 3 is set as 3 millimeters; When the circumference of dead ring is three times of arc-shaped conductive film 3 length, the thickness of mutual conducting strip 3 is set as 4.5 millimeters.The thickness of the arc-shaped conductive film 3 of the present embodiment humidity sensor is more than or equal to 3 millimeters.In conjunction with Figure 17 and Figure 18, the spacing distance of the first dead ring 21 and the second dead ring 22 is M, and the thickness of arc-shaped conductive film is N, and the spacing distance of the 3rd dead ring 23 and the 4th dead ring 24 is M/2, and the thickness of arc-shaped conductive film is 2N.Preferably, the metal material that arc-shaped conductive film 3 generally selects electric conductivity good, preferably good conductivity and the red copper of surface gloss, can detect the humidity in soil or coal seam, good conductivity more delicately, highly sensitive.
The humidity sensor of the present embodiment, can measure the humidity in soil, is especially applicable to the humidity in the little soil layer of acquisition testing point spacing distance.But be not limited in soil humidity measuring, also can be used for the moisture measurement etc. of the grain in coal seam, silo.
In describing the invention, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " on ", D score, " front ", " afterwards ", " vertically ", " level ", " top ", " end " " interior ", " outward ", " axis ", " radial direction ", orientation or the position relationship of the instruction such as " circumference " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore limitation of the present invention can not be interpreted as.In describing the invention, the implication of " multiple " is two or more, unless otherwise expressly limited specifically.In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score can be that the first and second features directly contact, or the first and second features are by intermediary indirect contact.And, fisrt feature second feature " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper, or only represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " below " and " below " can be fisrt feature immediately below second feature or tiltedly below, or only represent that fisrt feature level height is less than second feature.
In the description of this instructions, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, to the schematic representation of above-mentioned term not must for be identical embodiment or example.And the specific features of description, structure, material or feature can combine in one or more embodiment in office or example in an appropriate manner.In addition, when not conflicting, the feature of the different embodiment described in this instructions or example and different embodiment or example can carry out combining and combining by those skilled in the art.
Although illustrate and describe embodiments of the invention above, be understandable that, above-described embodiment is exemplary, can not be interpreted as limitation of the present invention, and those of ordinary skill in the art can change above-described embodiment within the scope of the invention, revises, replace and modification.
Claims (10)
1. a humidity sensor, is characterized in that, this sensor comprises:
Right cylinder, dead ring, arc-shaped conductive film and wire,
Described right cylinder for supporting multiple described dead ring, and is provided with the circuit of respective transmissions electric signal;
Described dead ring is interval with multiple described arc-shaped conductive film, described wire is positioned at the head and the tail place of adjacent described arc-shaped conductive film, for connecting described arc-shaped conductive film adjacent one another are, forms conducting ring;
Described dead ring comprises the first dead ring successively, second dead ring, 3rd dead ring and the 4th dead ring, the described arc-shaped conductive film phase one_to_one corresponding of described first dead ring and the second dead ring is placed, during for connection circuit, form the first electric capacity, the described arc-shaped conductive film of the 3rd dead ring and the second dead ring mutually complementary dislocation is placed, the described arc-shaped conductive film phase one_to_one corresponding of described 4th dead ring and the 3rd dead ring is placed, during for connection circuit, form the second electric capacity, the spacing distance of described first electric capacity and described second electric capacity is setting value A, described setting value A is less than or equal to first threshold, described first electric capacity and described second electric capacity are for changing moisture signal into electric signal.
2. sensor according to claim 1, is characterized in that, described sensor also comprises:
5th dead ring and the 6th dead ring,
The described arc-shaped conductive film of described 5th dead ring and the 4th dead ring mutually complementary dislocation is placed, and the described arc-shaped conductive film phase one_to_one corresponding of described 6th dead ring and the 5th dead ring is placed, and during for connection circuit, forms the 3rd electric capacity;
The spacing distance of described 3rd electric capacity and described second electric capacity is setting value A.
3. sensor according to claim 2, is characterized in that, described sensor also comprises:
5th conducting ring and the 6th conducting ring, during for connection circuit, form the 4th electric capacity;
The spacing distance of described 4th electric capacity and described 3rd electric capacity is the second setting value B, and described second setting value B is more than or equal to Second Threshold.
4. sensor according to claim 3, is characterized in that,
Described setting value A sets according to the ratio of the length of the circumference of described dead ring and described arc-shaped conductive film.
5. sensor according to claim 1, is characterized in that,
Described arc-shaped conductive film length is identical with gap length on described dead ring.
6. sensor according to claim 5, is characterized in that,
The thickness of described arc-shaped conductive film is preset value.
7. sensor according to claim 6, is characterized in that,
The thickness of described arc-shaped conductive film is more than or equal to 3 millimeters.
8. sensor according to claim 1, is characterized in that,
The spacing distance of described first dead ring and described second dead ring is M, and the thickness of described arc-shaped conductive film is N, and the spacing distance of described 3rd dead ring and described 4th dead ring is M/2, and the thickness of described arc-shaped conductive film is 2N.
9. sensor according to claim 8, is characterized in that,
The material of described arc-shaped conductive film is red copper.
10. sensor according to claim 1, is characterized in that,
Described first threshold is 5 centimetres.
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| CN201610030910.3A CN105486729A (en) | 2016-01-18 | 2016-01-18 | Humidity sensor |
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| CN201610030910.3A CN105486729A (en) | 2016-01-18 | 2016-01-18 | Humidity sensor |
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| CN103245701A (en) * | 2012-02-03 | 2013-08-14 | 迪尔公司 | Capacitance-based moisture sensor |
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