CN107271489A - A kind of many gear soil humidity measuring circuits - Google Patents
A kind of many gear soil humidity measuring circuits Download PDFInfo
- Publication number
- CN107271489A CN107271489A CN201710603800.6A CN201710603800A CN107271489A CN 107271489 A CN107271489 A CN 107271489A CN 201710603800 A CN201710603800 A CN 201710603800A CN 107271489 A CN107271489 A CN 107271489A
- Authority
- CN
- China
- Prior art keywords
- light emitting
- emitting diode
- transistor
- electrode slice
- measurement electrode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The invention discloses a kind of many gear soil humidity measuring circuits, first moisture measurement electrode slice A and the second moisture measurement electrode slice B are inserted in parallel into soil, when soil too dry, transistor T1 and diode D1, D3, D5, D7 are in cut-off state, light emitting diode D2, D4, D6, D8 do not light, after planting need to water, just can guarantee that percentage of seedgermination is high；When soil has certain humidity, moisture content in soil makes the resistance between the first moisture measurement electrode slice A and the electrode slices of the second moisture measurement electrode slice B two diminish, transistor T1 is turned on, light emitting diode D2, D4, D6, D8 sequential illumination, when the humidity of soil is bigger, transistor T1 ducting capacity is stronger, and the number for lighting light emitting diode is more, and color is followed successively by red, green, yellow, blueness.The present invention is had a good application prospect using the relative humidity of the light instruction soil of light emitting diode.
Description
Technical field
The present invention relates to a kind of many gear soil humidity measuring circuits, belong to electronic circuit technology field.
Background technology
In the time in busy farming season, it is necessary to according to soil moisture situation, sowed, when the feelings of antecedent soil moisture when peasant sows
Under condition, in order to ensure the normal growth of seed, typically watered after planting；, it is necessary to wait in the case that soil is excessively wet
After soil somewhat dryin-up point, sowed.At present, peasant still carries out judging soil moisture by experience, judges accurate
Exactness is limited, causes the bud ratio of seed not high, influences the sowing effect of seed.
The content of the invention
The purpose of the present invention is to overcome prior art Peasants to pass through experience to carry out judgement soil moisture, and the degree of accuracy has
The problem of limit, influence sowing effect.Many gear soil humidity measuring circuits of the present invention, using the light finger of light emitting diode
Show the relative humidity of soil, circuit is simple, easily realizes, with low cost, is easy to be widely popularized, has a good application prospect.
In order to achieve the above object, the technical solution adopted by the present invention is：
A kind of many gear soil humidity measuring circuits, it is characterised in that：Including battery G1, transistor T1, slide rheostat
RP1, the first moisture measurement electrode slice A and the second moisture measurement electrode slice B, the battery G1 positive pole are in series with switch S1,
One end of switch S1 colelctor electrode respectively with transistor T1, the first moisture measurement electrode slice A are connected, second humidity
Measuring electrode sheet B be arranged in parallel with the first moisture measurement electrode slice A, and the second moisture measurement electrode slice B becomes with sliding respectively
Resistance device RP1 one end, transistor T1 base stage are connected, the other end of the slide rheostat RP1 and battery G1 negative pole
It is connected, the negative pole of the battery G1 is connected to the ground, the emitter stage of the transistor T1 is respectively with the first diode D1's
Positive pole, the first light emitting diode D2 positive pole are connected, and the negative pole of the first diode D1 is respectively with the second diode D3's
Positive pole, the second light emitting diode D4 positive pole are connected, the negative pole of the second diode D3 respectively with triode D5 just
Pole, the 3rd light emitting diode D6 positive pole are connected, the negative pole of triode D5 positive pole respectively with tetrode D7,
Four light emitting diode D8 positive pole is connected, the first light emitting diode D2, the second light emitting diode D4, the 3rd light-emitting diodes
Pipe D6, the 4th light emitting diode D8 negative pole are connected to the ground, the limited leakage resistance R1 of base series of the transistor T1.
A kind of foregoing many gear soil humidity measuring circuits, it is characterised in that：Between one end and ground of the switch S1
It is parallel with filter capacitor C1.
A kind of foregoing many gear soil humidity measuring circuits, it is characterised in that：The battery G1 is lithium storage battery, and
Voltage is 9V.
A kind of foregoing many gear soil humidity measuring circuits, it is characterised in that：The transistor is NPN transistor.
A kind of foregoing many gear soil humidity measuring circuits, it is characterised in that：The first light emitting diode D2, second
Light emitting diode D4, the 3rd light emitting diode D6, the 4th light emitting diode D8 color are followed successively by red, green, yellow, indigo plant
Color.
A kind of foregoing many gear soil humidity measuring circuits, it is characterised in that：The first moisture measurement electrode slice A and
Second moisture measurement electrode slice B is that copper material is made.
The beneficial effects of the invention are as follows：Many gear soil humidity measuring circuits of the present invention, using the bright of light emitting diode
Get up to indicate the relative humidity of soil, circuit is simple, easily realize, it is with low cost, it is easy to be widely popularized, with good application
Prospect.
Brief description of the drawings
Fig. 1 is the circuit diagram of many gear soil humidity measuring circuits of the present invention.
Embodiment
Below in conjunction with Figure of description, the invention will be further described.Following examples are only used for clearly
Illustrate technical scheme, and can not be limited the scope of the invention with this.
As shown in figure 1, many gear soil humidity measuring circuits of the present invention, including battery G1, transistor T1, slip change
Device RP1, the first moisture measurement electrode slice A and the second moisture measurement electrode slice B are hindered, the positive pole of the battery G1 is in series with switch
S1, the switch S1 one end colelctor electrode respectively with transistor T1, the first moisture measurement electrode slice A are connected, and described second
Moisture measurement electrode slice B be arranged in parallel with the first moisture measurement electrode slice A, the second moisture measurement electrode slice B respectively with cunning
Dynamic rheostat RP1 one end, transistor T1 base stage are connected, and the other end of the slide rheostat RP1 is with battery G1's
Negative pole is connected, and the negative pole of the battery G1 is connected to the ground, the emitter stage of the transistor T1 respectively with the first diode
D1 positive pole, the first light emitting diode D2 positive pole are connected, the negative pole of the first diode D1 respectively with the second diode
D3 positive pole, the second light emitting diode D4 positive pole are connected, the negative pole of the second diode D3 respectively with triode D5
Positive pole, the 3rd light emitting diode D6 positive pole be connected, the negative pole of the triode D5 respectively with tetrode D7 just
Pole, the 4th light emitting diode D8 positive pole are connected, the first light emitting diode D2, the second light emitting diode D4, the 3rd hair
Optical diode D6, the 4th light emitting diode D8 negative pole are connected to the ground, the base series current limiting electricity of the transistor T1
Hinder R1.
It is preferred that, it is parallel with filter capacitor C1 between one end and ground of the switch S1, it is ensured that what battery G1 powered can
Lean on and stability.
It is preferred that, the battery G1 is lithium storage battery, and voltage is 9V, and whole circuit energy consumption is small, is easy to be used for a long time,
And lithium battery is lighter, it is easy to carry, it is easily big.
It is preferred that, the transistor is NPN transistor.
It is preferred that, the first light emitting diode D2, the second light emitting diode D4, the 3rd light emitting diode D6, the 4th hair
Optical diode D8 color is followed successively by red, green, yellow, blueness, is easy to quantity and color according to bright light, judges current soil
The relative humidity of earth.
The first moisture measurement electrode slice A and the second moisture measurement electrode slice B is that copper material is made, electric conductivity
It is good.
Many gear soil humidity measuring circuits of the present invention, operation principle is as follows：During test, by the first moisture measurement electrode
Piece A and the second moisture measurement electrode slice B are inserted in parallel into soil, when soil too dry, transistor T1 and diode D1,
D3, D5, D7 are in cut-off state, and light emitting diode D2, D4, D6, D8 do not light, after planting need to water, just can guarantee that
Percentage of seedgermination is high；When soil has certain humidity, the moisture content in soil surveys the first moisture measurement electrode slice A and the second humidity
Resistance between the electrode slices of amount electrode slice B two diminishes, transistor T1 conductings, light emitting diode D2, D4, D6, D8 sequential illumination, when
The humidity of soil is bigger, and transistor T1 ducting capacity is stronger, and the number for lighting light emitting diode is more, and color is followed successively by
Red, green, yellow, blueness, are easy to peasant to observe, when slide rheostat RP1 can adjust light emitting diode and light, soil pair
The minimum humidity answered.
In summary, many gear soil humidity measuring circuits of the invention, using the light instruction soil of light emitting diode
The relative humidity of earth, circuit is simple, easily realizes, with low cost, is easy to be widely popularized, has a good application prospect.
General principle, principal character and the advantage of the present invention has been shown and described above.The technical staff of the industry should
Understand, the present invention is not limited to the above embodiments, the original for simply illustrating the present invention described in above-described embodiment and specification
Reason, without departing from the spirit and scope of the present invention, various changes and modifications of the present invention are possible, these changes and improvements
It all fall within the protetion scope of the claimed invention.The claimed scope of the invention is by appended claims and its equivalent circle
It is fixed.
Claims (6)
1. a kind of many gear soil humidity measuring circuits, it is characterised in that：Including battery G1, transistor T1, slide rheostat
RP1, the first moisture measurement electrode slice A and the second moisture measurement electrode slice B, the battery G1 positive pole are in series with switch S1,
One end of switch S1 colelctor electrode respectively with transistor T1, the first moisture measurement electrode slice A are connected, second humidity
Measuring electrode sheet B be arranged in parallel with the first moisture measurement electrode slice A, and the second moisture measurement electrode slice B becomes with sliding respectively
Resistance device RP1 one end, transistor T1 base stage are connected, the other end of the slide rheostat RP1 and battery G1 negative pole
It is connected, the negative pole of the battery G1 is connected to the ground, the emitter stage of the transistor T1 is respectively with the first diode D1's
Positive pole, the first light emitting diode D2 positive pole are connected, and the negative pole of the first diode D1 is respectively with the second diode D3's
Positive pole, the second light emitting diode D4 positive pole are connected, the negative pole of the second diode D3 respectively with triode D5 just
Pole, the 3rd light emitting diode D6 positive pole are connected, the negative pole of triode D5 positive pole respectively with tetrode D7,
Four light emitting diode D8 positive pole is connected, the first light emitting diode D2, the second light emitting diode D4, the 3rd light-emitting diodes
Pipe D6, the 4th light emitting diode D8 negative pole are connected to the ground, the limited leakage resistance R1 of base series of the transistor T1.
2. a kind of many gear soil humidity measuring circuits according to claim 1, it is characterised in that：The one of the switch S1
Filter capacitor C1 is parallel between end and ground.
3. a kind of many gear soil humidity measuring circuits according to claim 1, it is characterised in that：The battery G1 is
Lithium storage battery, and voltage is 9V.
4. a kind of many gear soil humidity measuring circuits according to claim 1, it is characterised in that：The transistor is
NPN transistor.
5. a kind of many gear soil humidity measuring circuits according to claim 1, it is characterised in that：Described first luminous two
Pole pipe D2, the second light emitting diode D4, the 3rd light emitting diode D6, the 4th light emitting diode D8 color are followed successively by red, green
Color, yellow, blueness.
6. a kind of many gear soil humidity measuring circuits according to claim 1, it is characterised in that：First humidity is surveyed
It is that copper material is made to measure electrode slice A and the second moisture measurement electrode slice B.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710603800.6A CN107271489A (en) | 2017-07-23 | 2017-07-23 | A kind of many gear soil humidity measuring circuits |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710603800.6A CN107271489A (en) | 2017-07-23 | 2017-07-23 | A kind of many gear soil humidity measuring circuits |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107271489A true CN107271489A (en) | 2017-10-20 |
Family
ID=60079326
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710603800.6A Withdrawn CN107271489A (en) | 2017-07-23 | 2017-07-23 | A kind of many gear soil humidity measuring circuits |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107271489A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109507395A (en) * | 2019-01-02 | 2019-03-22 | 南京林业大学 | A kind of plant soil humidity detector |
| CN111610228A (en) * | 2019-02-22 | 2020-09-01 | 湖北文理学院 | Soil humidity detection circuit |
| CN111642488A (en) * | 2020-06-19 | 2020-09-11 | 萧县威辰机电工程设备有限公司 | Medicine spraying system for automatically spraying pesticide according to soil humidity |
-
2017
- 2017-07-23 CN CN201710603800.6A patent/CN107271489A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109507395A (en) * | 2019-01-02 | 2019-03-22 | 南京林业大学 | A kind of plant soil humidity detector |
| CN111610228A (en) * | 2019-02-22 | 2020-09-01 | 湖北文理学院 | Soil humidity detection circuit |
| CN111642488A (en) * | 2020-06-19 | 2020-09-11 | 萧县威辰机电工程设备有限公司 | Medicine spraying system for automatically spraying pesticide according to soil humidity |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207114465U (en) | A kind of more gear soil humidity measuring circuits | |
| CN107271489A (en) | A kind of many gear soil humidity measuring circuits | |
| CN204409063U (en) | A kind of intelligent flowerpot with social functions | |
| CN103630851A (en) | Method and system for measuring entire thermal resistance of LED (light emitting diode) radiating module | |
| CN206061746U (en) | Automatic irrigation controller | |
| CN109247227B (en) | Automatic watering control box based on soil humidity and upper and lower threshold setting | |
| CN205210732U (en) | Monitoring device is planted to crops | |
| CN102494796A (en) | Agricultural shed and greenhouse three-grade temperature monitoring device | |
| CN103091634A (en) | Battery level indicating circuit and indicating device and lamp | |
| CN203658555U (en) | LED radiating module total thermal resistance measurement system | |
| CN106154951A (en) | There is the home flower plantation monitor of camera function | |
| CN210142092U (en) | Soil humidity detection circuit | |
| CN202221421U (en) | Bridge type humidity indicator for seedling raising greenhouses | |
| CN208833908U (en) | A kind of electro-optical distance measurement circuit | |
| CN109239133B (en) | Soil humidometer cultivated in a pot | |
| CN205643235U (en) | Field portable soil moisture detecting rod | |
| CN206586026U (en) | Green plant automatic light-supplementing watering controller | |
| CN109187652A (en) | A kind of potting soil humidometer with USB port | |
| CN205786814U (en) | A kind of light cell current sensing means | |
| CN210299094U (en) | Automatic controller circuit module for fish tank aerator | |
| CN105510844B (en) | Constant pressure load circuit and the simulated battery for using the constant pressure load circuit | |
| CN205691533U (en) | Particle food dust humidity detection system | |
| CN207351942U (en) | A kind of water quality detection instruction device | |
| CN103033765A (en) | Lithium battery capacity measuring device | |
| CN204330743U (en) | A kind of high precision constant chemical composition tester circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20171020 |
|
| WW01 | Invention patent application withdrawn after publication |