CN106353374A - Equipment for environment humidity detection - Google Patents
Equipment for environment humidity detection Download PDFInfo
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- CN106353374A CN106353374A CN201610707658.5A CN201610707658A CN106353374A CN 106353374 A CN106353374 A CN 106353374A CN 201610707658 A CN201610707658 A CN 201610707658A CN 106353374 A CN106353374 A CN 106353374A
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- 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
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Abstract
The invention discloses equipment for environment humidity detection. The equipment comprises a power supply VCC, a switch circuit, a voltage stabilizing tube Z1, a capacitor C1, a time-base oscillation circuit and a sensor circuit, wherein the first end of the power supply VCC is connected with a negative electrode of the voltage stabilizing tube Z1 and the time-base oscillation circuit through the switch circuit; the time-base oscillation circuit is connected with the sensor circuit; the voltage stabilizing tube Z1 is connected in parallel with the capacitor C1; the positive electrode of the voltage stabilizing tube Z1 is connected with the second end of the power supply VCC, the time-base oscillation circuit and the sensor circuit. A sensor technology can be used for performing environment humidity detection; on the time-base treatment technology, the detected environment humidity information is processed and is then displayed so that a user can know the information.
Description
Technical field
The present invention relates to detection technique field, specifically, it is a kind of equipment for carrying out ambient humidity detection.
Background technology
Humidity, represents the physical quantity of air drying degree.At a certain temperature, contain in the air of certain volume
Steam is fewer, then air is drier；Steam is more, then air is moister.The dry and wet degree of air is called " humidity ".In this meaning
Under, conventional absolute humidity, relative humidity, compare the physical quantitys such as humidity, mixing ratio, saturation deficit and dew point to represent；If representing
In moist steam, the weight of vapor accounts for the percentage ratio of steam gross weight (volume), then the humidity of referred to as steam.Human body sensory
Comfortable humidity is: relative humidity is less than 70%.
Humidity has three kinds of primitive forms, i.e. vapour pressure, relative humidity, dew point temperature.
Vapour pressure (once be referred to as absolute humidity) represents the pressure of in the air steam part, unit with hundred handkerchiefs (hpa) as unit,
Take decimal one；
The percent of the ratio of the saturation vapour pressure under relative humidity in the air actual water vapor pressure and temperature at that time represents, rounds
Number；
Dew point temperature be represent in the air moisture content and air pressure constant under conditions of cooling reach temperature during saturation, unit is used
Degree Celsius (DEG C) represent, take decimal one.Be furnished with can also measure during drimeter relative humidity continuous record relative with minimum
Humidity.
Early in 18th century, the mankind have just invented wet and dry bulb and hair hygrometer, and electronic type humidity sensor is nearly tens
Year. just develop rapidly within particularly nearly 20 years.Alternately being relative with the Concept Change of people of new old thing.Due to dry
Wet bulb, the price of hair hygrometer are still significantly lower than humidity sensor, cause some people to electronics humidity sensor price
Do not approve.When just seeming that being accustomed to the use of the people of broom uses vacuum cleaner instead, have a hunch spend hundreds of yuan to buy a vacuum cleaner some are not drawn
Calculate, not as spend several yuans buy a broom psychology easily balance.
Because traditional hygrometric method impression in the brain of people is too deep, some define only psychrometer
It is only accurately intrinsic concept.Some users take psychrometer to contrast the humidity sensor just buied, and such as find indicating value
Difference, thinks that humidity sensor is forbidden at once.The accuracy of notice wet and dry bulb only has 5% 1 7%rh, is not only less than electronics humidity and passes
Sensor, but also depend on dry bulb, the precision of two thermometeies of wet bulb itself；Drimeter necessarily be in ventilation state: only yarn
When cloth water jacket, water quality, wind speed all meet certain requirements, can be only achieved the accuracy of regulation.Humidity sensor factory is in product
Will be come by demarcating using standard humidity generator before dispatching from the factory, the most frequently used separated flow type standard humidity generator is being demarcated.
It is desirable that user is also adopted by identical method when needing calibration, it is to avoid go calibration or comparison accuracy with the low utensil of accuracy
High sensor.
Dew cell is simplest humidity sensor.Dew cell mainly has resistance-type, condenser type two big class.
The feature of humistor is one layer of film made with wet sensory material of covering on substrate, when the vapor of in the air is inhaled
When being attached on humidity-sensitive film, the resistivity of element and resistance value all change, and can measure humidity using this characteristic.
Humicap is usually made with macromolecule membrane electric capacity, and conventional macromolecular material has polystyrene, polyamides
Imines, butyric acid acetate fiber etc..When ambient humidity changes, the dielectric constant of humicap changes so as to electric capacity
Amount also changes, and its capacitance change is directly proportional to relative humidity.
, up to 2-3%rh, this is higher than wet and dry bulb humidity measurement precision for the accuracy of electronic type moisture sensor.
Content of the invention
It is an object of the invention to provide a kind of equipment for carrying out ambient humidity detection, sensor technology can be utilized
Carry out the detection of ambient humidity, and based on when base treatment technology the ambient humidity being detected information is processed after show
Come, in case user knows.
The present invention is achieved through the following technical solutions: a kind of equipment for carrying out ambient humidity detection, including power supply
Vcc, on-off circuit, stabilivolt z1, electric capacity c1, time-base oscillation circuit and sensor circuit, the first end of described power supply vcc is passed through
On-off circuit is connected with the negative pole of stabilivolt z1 and time-base oscillation circuit respectively, described time-base oscillation circuit and sensor circuit
It is connected, described stabilivolt z1 is in parallel with electric capacity c1, and the positive pole of stabilivolt z1 the second end, the Shi Jizhen with power supply vcc respectively
Swing circuit and sensor circuit is connected.
Further to better implement the present invention, following setting structures are especially adopted: in described time-base oscillation circuit
Base chip u1 when being provided with, comparison circuit, light emitting diode d1, voltage-multiplying circuit, electric capacity c3, electric capacity c4, electric capacity c5, resistance r3,
Resistance r4, described electric capacity c1 is in parallel with comparison circuit, and comparison circuit is connected with voltage-multiplying circuit by light emitting diode d1, institute
State voltage-multiplying circuit by electric capacity c3 with when base chip u1 3 feet be connected, and when base chip u1 3 feet connect electric capacity c4 first
End, second end of electric capacity c4 is connected with second end of electric capacity c5, the first end of electric capacity c5 with when base chip u1 5 feet be connected
Connect, when described, 8 feet of base chip u1 are connected with the first end of on-off circuit and resistance r3 respectively, second end of resistance r3 is respectively
Be connected with the first end of resistance r4 and 7 feet of Shi Ji chip u1, second end of resistance r4 respectively with when base chip u1 2 feet and
The first end of sensor circuit is connected, and the second end of sensor circuit is connected with second end of electric capacity c5.
Further to better implement the present invention, following setting structures are especially adopted: be provided with described comparison circuit
Resistance r2, potentiometer w1, the first end of resistance r2 is connected with on-off circuit, second end of resistance r2 and the first of potentiometer w1
Fixing end is connected, and the adjustable end of potentiometer w1 is connected with light emitting diode d1, second fixing end of potentiometer w1 and electric capacity
Second end of c5 is connected.
Further to better implement the present invention, following setting structures are especially adopted: arrange in described voltage-multiplying circuit
There are electric capacity c2, diode d2 and diode d3, the first end of electric capacity c2 is respectively with negative pole and the light emitting diode d1 of diode d2
Non- potentiometer w1 connection end be connected, the second end phase of second end of described electric capacity c2 and the positive pole of diode d3 and electric capacity c4
Connect, the negative pole of diode d3 is connected with the positive pole of diode d2 and the first end of electric capacity c3.
Further to better implement the present invention, following setting structures are especially adopted: be provided with described on-off circuit
Switch k1 and resistance r1, one end of described switch k1 is connected with power supply vcc, and switchs the other end of k1 and the first of resistance r1
End is connected, and second end of resistance r1 is connected with the negative pole of stabilivolt z1.
Further to better implement the present invention, especially adopt following setting structures: when described 1 foot of base chip u1 with
Second end of electric capacity c5 is connected, when 2 feet of base chip u1 and 6 feet be connected, when 4 feet of base chip u1 and 8 feet be connected.
Further to better implement the present invention, following setting structures are especially adopted: described electric capacity c1 is electric using electrolysis
Hold, and the positive pole of electric capacity c1 is connected with the first end of resistance r2, the negative pole of described light emitting diode d1 can with potentiometer w1's
End is adjusted to be connected.
Further to better implement the present invention, following setting structures are especially adopted: described power supply vcc adopts direct current steady
Voltage source.
Further to better implement the present invention, following setting structures are especially adopted: setting in described sensor circuit
Have a humidity sensor cgq, the first end of humidity sensor cgq with when base chip u1 2 feet be connected, and humidity sensor cgq
The second end be connected with second end of electric capacity c5.
The present invention compared with prior art, has advantages below and a beneficial effect:
The present invention can carry out the detection of ambient humidity using sensor technology, and based on when base treatment technology by the ring being detected
Border humidity information shows after being processed, in case user knows.
The present invention is to make user know ambient humidity information, sends the light of different brightness using light emitting diode
To carry out ambient humidity information report.
The present invention is powered using D.C. regulated power supply, can effectively ensure the even running of whole equipment, and have
The raising operation hours of effect and life-span.
Brief description
Fig. 1 is the circuit theory diagrams of the present invention.
Specific embodiment
With reference to embodiment, the present invention is described in further detail, but embodiments of the present invention not limited to this.
Embodiment 1:
A kind of equipment for carrying out ambient humidity detection, can carry out the detection of ambient humidity using sensor technology, and base
In when base treatment technology the ambient humidity being detected information is processed after show, in case user knows, as Fig. 1 institute
Show, be specifically arranged to following structures: include power supply vcc, on-off circuit, stabilivolt z1, electric capacity c1, time-base oscillation circuit and sensing
Device circuit, the first end of described power supply vcc is connected with the negative pole of stabilivolt z1 and time-base oscillation circuit respectively by on-off circuit
Connect, described time-base oscillation circuit is connected with sensor circuit, described stabilivolt z1 is in parallel with electric capacity c1, and stabilivolt z1 is just
Pole is connected with second end of power supply vcc, time-base oscillation circuit and sensor circuit respectively.
When design uses, power supply vcc is provided for time-base oscillation circuit after on-off circuit after stabilivolt z1 voltage stabilizing
Required stable operating voltage, electric capacity c1 further functions as the effect of filtering, and sensor circuit is carried out to the humidity of surrounding
Detection, is then shown using the display circuit of setting special in time-base oscillation circuit using after time-base oscillation processing of circuit,
Thus allowing users to know humidity value information herein in time；Described on-off circuit is used for being linked into the power supply of power supply vcc
In time-base oscillation circuit, or the power supply disconnecting time-base oscillation circuit.
Embodiment 2:
The present embodiment is to optimize further on the basis of above-described embodiment, further to better implement the present invention, such as Fig. 1
Shown, especially adopt following setting structures: base chip u1 when being provided with described time-base oscillation circuit, comparison circuit, luminous
Diode d1(display circuit), voltage-multiplying circuit, electric capacity c3, electric capacity c4, electric capacity c5, resistance r3, resistance r4, described electric capacity c1 with than
It is in parallel compared with circuit, comparison circuit is connected with voltage-multiplying circuit by light emitting diode d1, described voltage-multiplying circuit passes through electric capacity c3
With when base chip u1 3 feet be connected, and when base chip u1 3 feet connect electric capacity c4 first end, second end of electric capacity c4 with
Second end of electric capacity c5 is connected, the first end of electric capacity c5 with when base chip u1 5 feet be connected, the 8 of base chip u1 when described
Foot is connected with the first end of on-off circuit and resistance r3 respectively, second end of resistance r3 respectively with the first end of resistance r4 and when
7 feet of base chip u1 are connected, second end of resistance r4 respectively with when 2 feet of the base chip u1 and first end phase of sensor circuit
Connect, the second end of sensor circuit is connected with second end of electric capacity c5, base when base chip u1 adopts 555 series when preferred
Chip, when further, base chip preferably employs base chip during ne555.
Embodiment 3:
The present embodiment is to optimize further on the basis of any of the above-described embodiment, further to better implement the present invention,
As shown in figure 1, especially adopting following setting structures: it is provided with resistance r2, potentiometer w1 in described comparison circuit, the of resistance r2
One end is connected with on-off circuit, and second end of resistance r2 is connected with first fixing end of potentiometer w1, and potentiometer w1's can
End is adjusted to be connected with light emitting diode d1, second fixing end of potentiometer w1 is connected with second end of electric capacity c5.
Embodiment 4:
The present embodiment is to optimize further on the basis of any of the above-described embodiment, further to better implement the present invention,
As shown in figure 1, further to better implement the present invention, following setting structures are especially adopted: set in described voltage-multiplying circuit
It is equipped with electric capacity c2, diode d2 and diode d3, the first end of electric capacity c2 is respectively with negative pole and the light emitting diode of diode d2
The non-potentiometer w1 connection end of d1 is connected, second end of second end of described electric capacity c2 and the positive pole of diode d3 and electric capacity c4
It is connected, the negative pole of diode d3 is connected with the positive pole of diode d2 and the first end of electric capacity c3.
Embodiment 5:
The present embodiment is to optimize further on the basis of any of the above-described embodiment, further to better implement the present invention,
As shown in figure 1, especially adopting following setting structures: be provided with switch k1 and resistance r1, described switch k1 in described on-off circuit
One end be connected with power supply vcc, and switch k1 the other end be connected with the first end of resistance r1, second end of resistance r1 and
The negative pole of stabilivolt z1 is connected.
Embodiment 6:
The present embodiment is to optimize further on the basis of any of the above-described embodiment, further to better implement the present invention,
As shown in figure 1, especially adopting following setting structures: when described, 1 foot of base chip u1 is connected with second end of electric capacity c5, Shi Ji
2 feet of chip u1 and 6 feet are connected, when 4 feet of base chip u1 and 8 feet be connected.
Embodiment 7:
The present embodiment is to optimize further on the basis of any of the above-described embodiment, further to better implement the present invention,
As shown in figure 1, especially adopting following setting structures: described electric capacity c1 adopts electrochemical capacitor, and the positive pole of electric capacity c1 and resistance r2
First end be connected, the negative pole of described light emitting diode d1 is connected with the adjustable end of potentiometer w1.
Embodiment 8:
The present embodiment is to optimize further on the basis of any of the above-described embodiment, further to better implement the present invention,
As shown in figure 1, especially adopting following setting structures: described power supply vcc adopts D.C. regulated power supply.
Embodiment 9:
The present embodiment is to optimize further on the basis of any of the above-described embodiment, further to better implement the present invention,
As shown in figure 1, especially adopting following setting structures: be provided with humidity sensor cgq, humidity sensor in described sensor circuit
The first end of cgq with when base chip u1 2 feet be connected, and the second end phase of second end of humidity sensor cgq and electric capacity c5
Connect, preferred humidity sensor cgq adopts capacitance type humidity sensor.
The above, be only presently preferred embodiments of the present invention, and not the present invention is done with any pro forma restriction, every according to
Any simple modification above example made according to the technical spirit of the present invention, equivalent variations, each fall within the protection of the present invention
Within the scope of.
Claims (9)
1. a kind of equipment for carrying out ambient humidity detection it is characterised in that: include power supply vcc, on-off circuit, stabilivolt
Z1, electric capacity c1, time-base oscillation circuit and sensor circuit, the first end of described power supply vcc pass through on-off circuit respectively with voltage stabilizing
The negative pole of pipe z1 is connected with time-base oscillation circuit, and described time-base oscillation circuit is connected with sensor circuit, described stabilivolt
Z1 is in parallel with electric capacity c1, and the positive pole of stabilivolt z1 respectively with second end of power supply vcc, time-base oscillation circuit and sensor circuit
It is connected.
2. a kind of equipment for carrying out ambient humidity detection according to claim 1 it is characterised in that: base when described
Base chip u1, comparison circuit, light emitting diode d1, voltage-multiplying circuit, electric capacity c3, electric capacity c4, electric capacity when being provided with oscillating circuit
C5, resistance r3, resistance r4, described electric capacity c1 is in parallel with comparison circuit, and comparison circuit passes through light emitting diode d1 and times piezoelectricity
Road is connected, described voltage-multiplying circuit by electric capacity c3 with when base chip u1 3 feet be connected, and when base chip u1 3 feet connect
The first end of electric capacity c4, second end of electric capacity c4 is connected with second end of electric capacity c5, the first end of electric capacity c5 with when base chip
5 feet of u1 are connected, and when described, 8 feet of base chip u1 are connected with the first end of on-off circuit and resistance r3 respectively, resistance r3
The second end be connected with the first end of resistance r4 and 7 feet of Shi Ji chip u1 respectively, second end of resistance r4 respectively with when base
2 feet of chip u1 are connected with the first end of sensor circuit, and the second end of sensor circuit is connected with second end of electric capacity c5
Connect.
3. a kind of equipment for carrying out ambient humidity detection according to claim 2 it is characterised in that: described comparison is electric
It is provided with resistance r2, potentiometer w1, the first end of resistance r2 is connected with on-off circuit, second end of resistance r2 and current potential in road
First fixing end of device w1 is connected, and the adjustable end of potentiometer w1 is connected with light emitting diode d1, and the second of potentiometer w1 is solid
Fixed end is connected with second end of electric capacity c5.
4. a kind of equipment for carrying out ambient humidity detection according to claim 3 it is characterised in that: in described multiplication of voltage
It is provided with electric capacity c2, diode d2 and diode d3, the first end of electric capacity c2 is respectively with the negative pole of diode d2 with send out in circuit
The non-potentiometer w1 connection end of optical diode d1 is connected, second end of described electric capacity c2 and the positive pole of diode d3 and electric capacity c4
The second end be connected, the negative pole of diode d3 is connected with the positive pole of diode d2 and the first end of electric capacity c3.
5. a kind of equipment for carrying out ambient humidity detection according to claim 4 it is characterised in that: described switch electricity
It is provided with switch k1 and resistance r1 in road, one end of described switch k1 is connected with power supply vcc, and switch the other end and the electricity of k1
The first end of resistance r1 is connected, and second end of resistance r1 is connected with the negative pole of stabilivolt z1.
6. a kind of equipment for carrying out ambient humidity detection according to claim 5 it is characterised in that: base core when described
1 foot of piece u1 is connected with second end of electric capacity c5, when 2 feet of base chip u1 and 6 feet be connected, when base chip u1 4 feet and 8
Foot is connected.
7. a kind of equipment for carrying out ambient humidity detection according to claim 6 it is characterised in that: described electric capacity c1
Using electrochemical capacitor, and the positive pole of electric capacity c1 is connected with the first end of resistance r2, the negative pole of described light emitting diode d1 with electricity
The adjustable end of position device w1 is connected.
8. a kind of equipment for carrying out ambient humidity detection according to claim 7 it is characterised in that: described power supply
Vcc adopts D.C. regulated power supply.
9. a kind of equipment for carrying out ambient humidity detection according to any one of claim 2-8 it is characterised in that: institute
State and in sensor circuit, be provided with humidity sensor cgq, the first end of humidity sensor cgq with when base chip u1 2 feet be connected
Connect, and second end of humidity sensor cgq is connected with second end of electric capacity c5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610707658.5A CN106353374A (en) | 2016-08-23 | 2016-08-23 | Equipment for environment humidity detection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610707658.5A CN106353374A (en) | 2016-08-23 | 2016-08-23 | Equipment for environment humidity detection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106353374A true CN106353374A (en) | 2017-01-25 |
Family
ID=57844411
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610707658.5A Pending CN106353374A (en) | 2016-08-23 | 2016-08-23 | Equipment for environment humidity detection |
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| Country | Link |
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| CN (1) | CN106353374A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107966941A (en) * | 2018-01-17 | 2018-04-27 | 攀枝花学院 | Dykes and dams monitoring water level circuit |
| CN108037712A (en) * | 2018-01-18 | 2018-05-15 | 攀枝花学院 | In the daytime intelligent irrigation circuit |
-
2016
- 2016-08-23 CN CN201610707658.5A patent/CN106353374A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107966941A (en) * | 2018-01-17 | 2018-04-27 | 攀枝花学院 | Dykes and dams monitoring water level circuit |
| CN108037712A (en) * | 2018-01-18 | 2018-05-15 | 攀枝花学院 | In the daytime intelligent irrigation circuit |
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