CN109613076A - Humidity measuring method and device - Google Patents
Humidity measuring method and device Download PDFInfo
- Publication number
- CN109613076A CN109613076A CN201910069554.XA CN201910069554A CN109613076A CN 109613076 A CN109613076 A CN 109613076A CN 201910069554 A CN201910069554 A CN 201910069554A CN 109613076 A CN109613076 A CN 109613076A
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- metalwork
- capacitor
- humidity
- printed circuit
- circuit board
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- 238000000034 method Methods 0.000 title claims abstract description 33
- 239000003990 capacitor Substances 0.000 claims abstract description 133
- 238000013507 mapping Methods 0.000 claims abstract description 39
- 239000002184 metal Substances 0.000 claims description 34
- 229910052751 metal Inorganic materials 0.000 claims description 34
- 239000000463 material Substances 0.000 claims description 13
- 238000004364 calculation method Methods 0.000 claims description 9
- 230000001953 sensory effect Effects 0.000 claims description 9
- 229920002521 macromolecule Polymers 0.000 claims description 7
- 238000005259 measurement Methods 0.000 claims description 7
- 230000005611 electricity Effects 0.000 claims description 6
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 2
- 239000010931 gold Substances 0.000 claims description 2
- 229910052737 gold Inorganic materials 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 238000001514 detection method Methods 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 14
- 239000011799 hole material Substances 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000004642 Polyimide Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229920002301 cellulose acetate Polymers 0.000 description 1
- 238000004590 computer program Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- 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
- G01N27/221—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance by investigating the dielectric properties
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- 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
Abstract
The embodiment of the present application provides a kind of humidity measuring method and device.The device includes the first printed circuit board and the first electronic equipment, first printed circuit board includes the first metalwork and the second metalwork, first metalwork and the second metalwork are arranged at intervals on the first printed circuit board, to form first capacitor, first metalwork and the second metalwork are electrically connected with the first electronic equipment respectively, humidity mapping table is prestored in first electronic equipment, first electronic equipment is used to measure the capacitance of first capacitor, and the capacitance based on first capacitor carries out operation, obtain relative dielectric constant corresponding with the capacitance of first capacitor, in humidity mapping table, it searches and obtains humidity value corresponding with relative dielectric constant.Capacitor is formed by by the metalwork on printed circuit board as a result, and realizes Humidity Detection, reduces production cost.
Description
Technical field
This application involves moisture measurement technical fields, in particular to a kind of humidity measuring method and device.
Background technique
Currently, measuring technique is widely applied in life or production environment, ambient humidity is monitored.However, existing
There is technology that humidity measuring instrument usually is installed in the environmental professional secondary school door for needing to carry out Humidity Detection, or is needing to carry out Humidity Detection
Equipment on humidity detector is specially set, since humidity detector in the prior art needs to be equipped with more zero
Part, structure is complicated, and special setting or installation humidity detector will increase production cost.
Summary of the invention
In view of this, the embodiment of the present application provides a kind of humidity measuring method and device.
In a first aspect, the embodiment of the present application provides a kind of humidity measuring instrument, including the first printed circuit board and first
Electronic equipment, first printed circuit board include the first metalwork and the second metalwork, first metalwork and described the
Two metalworks are arranged at intervals on first printed circuit board, to form first capacitor, first metalwork and described
Two metalworks are electrically connected with first electronic equipment respectively.
Humidity mapping table is prestored in first electronic equipment, includes normal with each opposite dielectric in the humidity mapping table
The corresponding humidity value of number, first electronic equipment are used to measure the capacitance of the first capacitor, are based on described first
The capacitance of capacitor carries out operation, relative dielectric constant corresponding with the capacitance of the first capacitor is obtained, in the humidity
In mapping table, searches and obtain humidity value corresponding with the relative dielectric constant.
Optionally, in the embodiment of the present application, first electronic equipment respectively with first metalwork and described
The electrical connection of two metalworks, is formed by the capacitor of the first capacitor to measure first metalwork and second metalwork
Value.
Optionally, in the embodiment of the present application, first metalwork and the second metalwork are with the first spacing distance interval
It is arranged on first printed circuit board, first metalwork and second metalwork are metal routing.
First electronic equipment is for the capacitance based on the first capacitor, first spacing distance and described
Area between the plate of first capacitor is calculated using capacitor calculation formula, is obtained corresponding with the capacitance of the first capacitor
Relative dielectric constant.
Optionally, in the embodiment of the present application, the capacitor calculation formula are as follows:
Wherein, C is the capacitance of the first capacitor measured, and ε is the relative dielectric constant, ε0For vacuum dielectric
Constant, S area between the plate of the first capacitor, D are first spacing distance.
Optionally, in the embodiment of the present application, macromolecule is coated on first metalwork and second metalwork
Wet sensory material.
Second aspect, the embodiment of the present application also provides a kind of humidity measuring methods, are applied to and the first printed circuit board
First electronic equipment of electrical connection, first printed circuit board include the first metalwork and the second metalwork, first gold medal
Belong to part and second metalwork is arranged at intervals on first printed circuit board, to form first capacitor, first electricity
Humidity mapping table is prestored in sub- equipment, includes humidity corresponding with each relative dielectric constant in the humidity mapping table
Value, which comprises
Measure the capacitance of the first capacitor.
Capacitance based on the first capacitor carries out operation, obtains corresponding with the capacitance of the first capacitor opposite
Dielectric constant.
In the humidity mapping table, searches and obtain humidity value corresponding with the relative dielectric constant.
The third aspect, the embodiment of the present application also provides another humidity measuring instrument, including the second printed circuit board and
Second electronic equipment, second printed circuit board are electrically connected with second electronic equipment, pre- in second electronic equipment
There is humidity mapping table.
Second printed circuit board includes third metalwork, the 4th metalwork, fifth metal part and the 6th metalwork, institute
It states third metalwork and the 4th metalwork is arranged at intervals on the first surface of second printed circuit board, to form
Two capacitors, the fifth metal part and the 6th metalwork are arranged at intervals on the second surface of second printed circuit board
On, to form third capacitor, second capacitor is in parallel with the third capacitor, second capacitor and the third capacitor point
It is not electrically connected with second electronic equipment.
Second electronic equipment, for measuring the shunt capacitance of second capacitor after parallel connection and the third capacitor
Value, and operation is carried out based on the parallel capacitance of value, relative dielectric constant corresponding with the parallel capacitance of value is obtained, described
In humidity mapping table, searches and obtain humidity value corresponding with the relative dielectric constant.
Optionally, in the embodiment of the present application, the third metalwork and the 4th metalwork are with the second spacing distance
It is arranged at intervals on the first surface of second printed circuit board, the fifth metal part and the 6th metalwork are with third
Spacing distance is arranged at intervals on the second surface of second printed circuit board.
The third metalwork, the 4th metalwork, the fifth metal part and the 6th metalwork are walked for metal
Line.
Second electronic equipment, for using capacitor calculation formula, based on the parallel capacitance of value, second interval
Distance, the third spacing distance, second capacitor plate between area and the plate of the third capacitor area carry out operation,
Obtain relative dielectric constant corresponding with the parallel capacitance of value.
Optionally, in the embodiment of the present application, the third metalwork, the 4th metalwork, the fifth metal part
Macromolecule wet sensory material is coated with on the 6th metalwork.
Fourth aspect, the application implementation additionally provide another humidity measuring method, are applied to and the second printed circuit board
Electrical connection the second electronic equipment, second printed circuit board include third metalwork, the 4th metalwork, fifth metal part and
6th metalwork, the third metalwork and the 4th metalwork are arranged at intervals on the first table of second printed circuit board
On face, to form the second capacitor, the fifth metal part and the 6th metalwork are arranged at intervals on second printed circuit
On the second surface of plate, to form third capacitor, second capacitor is in parallel with the third capacitor, second electronic equipment
In prestore humidity mapping table, include humidity value corresponding with each relative dielectric constant in the humidity mapping table, it is described
Method includes:
The parallel capacitance of value of second capacitor and the third capacitor after measurement is in parallel.
Operation is carried out based on the parallel capacitance of value, obtains relative dielectric constant corresponding with the parallel capacitance of value.
In the humidity mapping table, searches and obtain humidity value corresponding with the relative dielectric constant.
Humidity measuring method and device provided by the embodiments of the present application, the device include the first printed circuit board and the first electricity
Sub- equipment, humidity mapping table is prestored in the first electronic equipment, and the first printed circuit board includes the first metalwork and the second metal
Part, the first metalwork and the second metalwork, which are arranged at intervals on the first printed circuit board, forms first capacitor, the first electronic equipment
It is electrically connected with first capacitor, the capacitance for measuring the capacitance of first capacitor, and based on first capacitor carries out operation, obtains
Relative dielectric constant corresponding with the capacitance of first capacitor, and in humidity mapping table, search and obtain and opposite dielectric
The corresponding humidity value of constant.Capacitor is formed by by the metalwork on printed circuit board as a result, and realizes Humidity Detection, is reduced
Production cost.
Detailed description of the invention
Technical solution in ord to more clearly illustrate embodiments of the present application, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only some embodiments of the application, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is a kind of schematic diagram of the first printed circuit board provided by the embodiments of the present application.
Fig. 2 is a kind of structural block diagram of the first humidity measuring instrument provided by the embodiments of the present application.
Fig. 3 is another schematic diagram of the first printed circuit board provided by the embodiments of the present application.
Fig. 4 is a kind of flow diagram of humidity measuring method provided by the embodiments of the present application.
Fig. 5 is a kind of structural block diagram of the second humidity measuring instrument provided by the embodiments of the present application.
Fig. 6 is the flow diagram of another humidity measuring method provided by the embodiments of the present application.
Icon: the first humidity measuring instrument of 100-；The first printed circuit board of 10-；20- first capacitor；The first metal of 201-
Part；The second metalwork of 202-；The first electronic equipment of 30-；The second humidity measuring instrument of 200-；The second printed circuit board of 40-；50-
Second capacitor；60- third capacitor；The second electronic equipment of 70-.
Specific embodiment
It is more and more wet in order to guarantee the stable operation of electronic product, or the monitoring to some environment progress humidity
Degree measuring device is developed, to be applied to these electronic products or environment.At the same time, printed circuit board is as most
Number electronic equipments must necessary parts, be also more and more applied to production and life in.
Since the prior art usually installs humidity measuring instrument in the environmental professional secondary school door for needing to carry out Humidity Detection, or needing
It carries out that humidity detector is specially arranged in the equipment of Humidity Detection.However humidity detector needs in the prior art are matched
Standby more components, structure is complicated, and special setting or installation humidity detector will increase production cost.
In view of this, the embodiment of the present application provides a kind of humidity measuring method and device.
Below in conjunction with the attached drawing in the embodiment of the present application, technical solutions in the embodiments of the present application carries out clear, complete
Site preparation description, it is clear that described embodiment is some embodiments of the present application, instead of all the embodiments.Usually herein
The component of the embodiment of the present application described and illustrated in place's attached drawing can be arranged and be designed with a variety of different configurations.
Therefore, the detailed description of the embodiments herein provided in the accompanying drawings is not intended to limit below claimed
Scope of the present application, but be merely representative of the selected embodiment of the application.Based on the embodiment in the application, this field is common
Technical staff's all other embodiment obtained without creative efforts belongs to the model of the application protection
It encloses.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.
Please refer to Fig. 1 and Fig. 2.Fig. 1 is a kind of signal of the first printed circuit board 10 provided by the embodiments of the present application
Figure, Fig. 2 are a kind of structural block diagram of the first humidity measuring instrument 100 provided by the present application.Provided by the embodiments of the present application first
Humidity measuring instrument 100, including the first printed circuit board 10 and the first electronic equipment 30, first printed circuit board 10 include
First metalwork 201 and the second metalwork 202, first metalwork 201 and second metalwork 202 are arranged at intervals on institute
It states on the first printed circuit board 10, to form first capacitor 20, first metalwork 201 and second metalwork 202 divide
It is not electrically connected with first electronic equipment 30；
Humidity mapping table is prestored in first electronic equipment 30, includes in the humidity mapping table and each opposite dielectric
The corresponding humidity value of constant, first electronic equipment 30 are used to measure the capacitance of the first capacitor 20, are based on institute
The capacitance for stating first capacitor 20 carries out operation, obtains relative dielectric constant corresponding with the capacitance of the first capacitor 20,
In the humidity mapping table, searches and obtain humidity value corresponding with the relative dielectric constant.
Optionally, in the embodiment of the present application, first electronic equipment 30 respectively with first metalwork 201 and institute
State the electrical connection of the second metalwork 202, with measure first metalwork 201 and second metalwork 202 be formed by it is described
The capacitance of first capacitor 20.
Optionally, in the embodiment of the present application, first metalwork 201 and the second metalwork 202 are with the first interval distance
From being arranged at intervals on first printed circuit board 10, first metalwork 201 and second metalwork 202 are metal
Cabling.
First electronic equipment 30 for based on the first capacitor 20 capacitance, first spacing distance and
Area between the plate of the first capacitor 20, is calculated using capacitor calculation formula, obtains the capacitor with the first capacitor 20
It is worth corresponding relative dielectric constant.
In detail, all it is essential device in most of electronic products due to printed circuit board, also, is printing
On circuit board, setting metal routing is process that is easy to accomplish and will not bringing fringe cost substantially, and thus, it is possible to wet in realization
While degree measurement, reduce production cost.Still optionally further, first spacing distance can be but be not limited to described
The minimum cable run distance that one printed circuit board 10 allows.
Optionally, in the embodiment of the present application, the capacitor calculation formula are as follows:
Wherein, C is the capacitance of the first capacitor 20 measured, and ε is the relative dielectric constant, ε0For vacuum Jie
Electric constant (8.86 × 10^ (- 12) unit F/m), S area between the plate of the first capacitor 20, D are first interval distance
From.
In detail, area between the plate of the first capacitor 20 can pass through the length and width of 20 plate of first capacitor
It obtains.For example, for first metalwork 201 and second metalwork 202 that form the first capacitor 20, described the
The length of one metalwork 201 and second metalwork 202 is the length of 20 plate of the first capacitor, first metalwork
201 and second metalwork 202 track thickness be 20 plate of first capacitor width.By 20 plate of first capacitor
Length and width take product, area between the plate of the first capacitor 20 can be obtained.
Optionally, in the embodiment of the present application, it is coated on first metalwork 201 and second metalwork 202
Macromolecule wet sensory material.
In detail, the macromolecule wet sensory material can be but not limited to polystyrene, cellulose acetate, polyacrylate
And polyimides, these wet sensory materials are higher for the sensitivity of humidity, use these wet sensory material moisture measurement humidity, energy
Enough so that measurement accuracy is higher.
Fig. 3 is please referred to, is another schematic diagram of the first printed circuit board 10 provided by the embodiments of the present application, this Shen
It please be used to form the metal routing of first capacitor 20 in the first humidity measuring instrument 100 for providing of embodiment, it can be with spiral shape
Shape is set on first printed circuit board 10, can also be set to first printed circuit with rectangular or other shapes
On plate 10.
Fig. 4 is please referred to, is a kind of flow diagram of humidity measuring method provided by the present application.It is provided by the present application
Humidity measuring method, applied to the first electronic equipment 30 being electrically connected with the first printed circuit board 10, first printed circuit
Plate 10 includes the first metalwork 201 and the second metalwork 202, and first metalwork 201 and second metalwork 202 are spaced
It is arranged on first printed circuit board 10, to form first capacitor 20, prestores humidity in first electronic equipment 30
Mapping table includes humidity value corresponding with each relative dielectric constant in the humidity mapping table.It should be noted that this Shen
Please the humidity measuring method that provides of embodiment be not limitation with Fig. 4 and specific order as described below.The method can pass through
Following steps are realized:
S10 measures the capacitance of the first capacitor 20.
S20, the capacitance based on the first capacitor 20 carry out operation, obtain the capacitance pair with the first capacitor 20
The relative dielectric constant answered.
S30 is searched in the humidity mapping table and is obtained humidity value corresponding with the relative dielectric constant.
Fig. 5 is please referred to, is the block diagram of the second humidity measuring instrument 200 provided by the embodiments of the present application.This
Apply for that the second humidity measuring instrument 200 that embodiment provides includes the second printed circuit board 40 and the second electronic equipment 70, it is described
Second printed circuit board 40 is electrically connected with second electronic equipment 70, and humidity mapping is prestored in second electronic equipment 70
Table.
Second printed circuit board 40 includes third metalwork, the 4th metalwork, fifth metal part and the 6th metalwork,
The third metalwork and the 4th metalwork are arranged at intervals on the first surface of second printed circuit board 40, with shape
At the second capacitor 50, the fifth metal part and the 6th metalwork are arranged at intervals on the of second printed circuit board 40
On two surfaces, to form third capacitor 60, second capacitor 50 is in parallel with the third capacitor 60, second capacitor 50 with
The third capacitor 60 is electrically connected with second electronic equipment 70 respectively.
Second electronic equipment 70, for measuring second capacitor 50 and the third capacitor 60 after parallel connection respectively
Parallel capacitance of value, and operation is carried out based on the parallel capacitance of value, obtained corresponding with the parallel capacitance of value with respect to dielectric
Constant is searched in the humidity mapping table and obtains humidity value corresponding with the relative dielectric constant.
In detail, in the embodiment of the present application, second printed circuit board 40 is equipped with through-hole, second capacitor 50
It is in parallel with the third capacitor 60 by the through-hole.Still optionally further, there can be conduction material with mould on the wall of the through-hole
Material, to realize the electrical connection of second capacitor 50 and the third capacitor 60.
It is understood that the shape and material about the capacitor on second printed circuit board 40 in the present embodiment
Material etc., corresponding with the shape of capacitor on above-mentioned first printed circuit board 10 and material consistent, it is no longer repeated herein.
Optionally, in the embodiment of the present application, the third metalwork and the 4th metalwork are with the second spacing distance
It is arranged at intervals on the first surface of second printed circuit board 40, the fifth metal part and the 6th metalwork are with
Three spacing distances are arranged at intervals on the second surface of second printed circuit board 40.
The third metalwork, the 4th metalwork, the fifth metal part and the 6th metalwork are walked for metal
Line.
Still optionally further, green oil or white oil can be covered on the metal routing, green oil or white oil can not also be covered.
Second electronic equipment 70, for using capacitor calculation formula, based between the parallel capacitance of value, described second
Gauge between, the plate of the third spacing distance, second capacitor 50 between area and the plate of the third capacitor 60 area into
Row operation obtains relative dielectric constant corresponding with the parallel capacitance of value.
Optionally, in the embodiment of the present application, the third metalwork, the 4th metalwork, the fifth metal part
Macromolecule wet sensory material is coated with on the 6th metalwork.
Fig. 6 is please referred to, for the flow diagram of another humidity measuring method provided by the embodiments of the present application, the party
Method is applied to the second electronic equipment 70 being electrically connected with the second printed circuit board 40, and second printed circuit board 40 includes third
Metalwork, the 4th metalwork, fifth metal part and the 6th metalwork, the third metalwork and the 4th metalwork interval are set
It sets on the first surface of second printed circuit board 40, to form the second capacitor 50, the fifth metal part and described
Six metalworks are arranged at intervals on the second surface of second printed circuit board 40, to form third capacitor 60, described second
Capacitor 50 is in parallel with the third capacitor 60, and humidity mapping table, the humidity mapping are prestored in second electronic equipment 70
It include humidity value corresponding with each relative dielectric constant in table, which comprises
S40, the parallel capacitance of value of second capacitor 50 and the third capacitor 60 after measurement is in parallel.
S50 carries out operation based on the parallel capacitance of value, and it is normal to obtain opposite dielectric corresponding with the parallel capacitance of value
Number.
S60 is searched in the humidity mapping table and is obtained humidity value corresponding with the relative dielectric constant.
In conclusion humidity measuring method provided by the embodiments of the present application and device, which includes the first printed circuit
Plate 10 and the first electronic equipment 30, prestore humidity mapping table in the first electronic equipment 30, and the first printed circuit board 10 includes the
One metalwork 201 and the second metalwork 202, the first metalwork 201 and the second metalwork 202 are arranged at intervals on the first printed circuit
First capacitor 20 is formed on plate 10, the first electronic equipment 30 is electrically connected with first capacitor 20, for measuring the electricity of first capacitor 20
Capacitance, and operation is carried out based on the capacitance of first capacitor 20, obtain opposite dielectric corresponding with the capacitance of first capacitor 20
Constant, and in humidity mapping table, search and obtain humidity value corresponding with relative dielectric constant.Pass through printing electricity as a result,
Metalwork on the plate of road is formed by capacitor and realizes Humidity Detection, reduces production cost.
In embodiment provided herein, it should be understood that disclosed device and method, it can also be by other
Mode realize.Device and method embodiment described above is only schematical, for example, flow chart and frame in attached drawing
Figure shows the system frame in the cards of the system of multiple embodiments according to the application, method and computer program product
Structure, function and operation.In this regard, each box in flowchart or block diagram can represent a module, section or code
A part, a part of the module, section or code includes one or more for implementing the specified logical function
Executable instruction.It should also be noted that function marked in the box can also be with not in some implementations as replacement
It is same as the sequence marked in attached drawing generation.For example, two continuous boxes can actually be basically executed in parallel, they have
When can also execute in the opposite order, this depends on the function involved.It is also noted that in block diagram and or flow chart
Each box and the box in block diagram and or flow chart combination, can function or movement as defined in executing it is dedicated
Hardware based system realize, or can realize using a combination of dedicated hardware and computer instructions.
In addition, each functional module in each embodiment of the application can integrate one independent portion of formation together
Point, it is also possible to modules individualism, an independent part can also be integrated to form with two or more modules.
It should be noted that, in this document, the terms "include", "comprise" or its any other variant are intended to non-row
Its property includes, so that the process, method, article or equipment for including a series of elements not only includes those elements, and
And further include the other elements being not explicitly listed, or further include for this process, method, article or equipment institute it is intrinsic
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including institute
State in the process, method, article or equipment of element that there is also other identical elements.
It is obvious to a person skilled in the art that the application is not limited to the details of above-mentioned exemplary embodiment, Er Qie
In the case where without departing substantially from spirit herein or essential characteristic, the application can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and scope of the present application is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included in the application.Any reference signs in the claims should not be construed as limiting the involved claims.
Claims (10)
1. a kind of humidity measuring instrument, which is characterized in that including the first printed circuit board and the first electronic equipment, first print
Printed circuit board includes the first metalwork and the second metalwork, and first metalwork and second metalwork are arranged at intervals on institute
It states on the first printed circuit board, to form first capacitor, first metalwork and second metalwork are respectively with described
The electrical connection of one electronic equipment；
Humidity mapping table is prestored in first electronic equipment, includes in the humidity mapping table and each relative dielectric constant point
Not corresponding humidity value, first electronic equipment are used to measure the capacitance of the first capacitor, are based on the first capacitor
Capacitance carry out operation, corresponding with the capacitance of first capacitor relative dielectric constant is obtained, in humidity mapping
In table, searches and obtain humidity value corresponding with the relative dielectric constant.
2. humidity measuring instrument according to claim 1, which is characterized in that first electronic equipment is respectively with described
One metalwork and second metalwork electrical connection, are formed by institute to measure first metalwork and second metalwork
State the capacitance of first capacitor.
3. humidity measuring instrument according to claim 1, which is characterized in that first metalwork and the second metalwork with
First spacing distance is arranged at intervals on first printed circuit board, and first metalwork and second metalwork are gold
Belong to cabling；
First electronic equipment is for the capacitance based on the first capacitor, first spacing distance and described first
Area between the plate of capacitor is calculated using capacitor calculation formula, is obtained corresponding with the capacitance of the first capacitor opposite
Dielectric constant.
4. humidity measuring instrument according to claim 3, which is characterized in that the capacitor calculation formula are as follows:
Wherein, C is the capacitance of the first capacitor measured, and ε is the relative dielectric constant, ε0For permittivity of vacuum,
S area between the plate of the first capacitor, D are first spacing distance.
5. humidity measuring instrument according to claim 1, which is characterized in that first metalwork and second metal
Macromolecule wet sensory material is coated on part.
6. a kind of humidity measuring method, which is characterized in that applied to the first electronic equipment being electrically connected with the first printed circuit board,
First printed circuit board includes the first metalwork and the second metalwork, between first metalwork and second metalwork
Every being arranged on first printed circuit board, to form first capacitor, humidity mapping is prestored in first electronic equipment
Table includes humidity value corresponding with each relative dielectric constant in the humidity mapping table, which comprises
Measure the capacitance of the first capacitor；
Capacitance based on the first capacitor carries out operation, obtains opposite dielectric corresponding with the capacitance of the first capacitor
Constant；
In the humidity mapping table, searches and obtain humidity value corresponding with the relative dielectric constant.
7. a kind of humidity measuring instrument, which is characterized in that including the second printed circuit board and the second electronic equipment, second print
Printed circuit board is electrically connected with second electronic equipment, prestores humidity mapping table in second electronic equipment；
Second printed circuit board includes third metalwork, the 4th metalwork, fifth metal part and the 6th metalwork, and described
Three metalworks and the 4th metalwork are arranged at intervals on the first surface of second printed circuit board, to form the second electricity
Holding, the fifth metal part and the 6th metalwork are arranged at intervals on the second surface of second printed circuit board, with
Form third capacitor, second capacitor is in parallel with the third capacitor, second capacitor and the third capacitor respectively with
The second electronic equipment electrical connection；
Second electronic equipment, for measuring the shunt capacitance of second capacitor after parallel connection and the third capacitor respectively
Value, and operation is carried out based on the parallel capacitance of value, relative dielectric constant corresponding with the parallel capacitance of value is obtained, described
In humidity mapping table, searches and obtain humidity value corresponding with the relative dielectric constant.
8. humidity measuring instrument according to claim 7, which is characterized in that the third metalwork and the 4th metal
Part is arranged at intervals on the first surface of second printed circuit board with the second spacing distance, the fifth metal part and described
6th metalwork is arranged at intervals on the second surface of second printed circuit board with third spacing distance；
The third metalwork, the 4th metalwork, the fifth metal part and the 6th metalwork are metal routing；
Second electronic equipment is based on the parallel capacitance of value, second interval distance for using capacitor calculation formula
From area carries out operation between area and the plate of the third capacitor between, the plate of the third spacing distance, second capacitor, obtain
Obtain relative dielectric constant corresponding with the parallel capacitance of value.
9. humidity measuring instrument according to claim 7, which is characterized in that the third metalwork, the 4th metal
Macromolecule wet sensory material is coated on part, the fifth metal part and the 6th metalwork.
10. a kind of humidity measuring method, which is characterized in that set applied to the second electronics being electrically connected with the second printed circuit board
Standby, second printed circuit board includes third metalwork, the 4th metalwork, fifth metal part and the 6th metalwork, and described
Three metalworks and the 4th metalwork are arranged at intervals on the first surface of second printed circuit board, to form the second electricity
Holding, the fifth metal part and the 6th metalwork are arranged at intervals on the second surface of second printed circuit board, with
Third capacitor is formed, second capacitor is in parallel with the third capacitor, and humidity mapping is prestored in second electronic equipment
Table includes humidity value corresponding with each relative dielectric constant in the humidity mapping table, which comprises
The parallel capacitance of value of second capacitor and the third capacitor after measurement is in parallel；
Operation is carried out based on the parallel capacitance of value, obtains relative dielectric constant corresponding with the parallel capacitance of value；
In the humidity mapping table, searches and obtain humidity value corresponding with the relative dielectric constant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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