CN206259006U - Soil moisture detects simple alarm - Google Patents
Soil moisture detects simple alarm Download PDFInfo
- Publication number
- CN206259006U CN206259006U CN201621349351.4U CN201621349351U CN206259006U CN 206259006 U CN206259006 U CN 206259006U CN 201621349351 U CN201621349351 U CN 201621349351U CN 206259006 U CN206259006 U CN 206259006U
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- China
- Prior art keywords
- soil
- soil moisture
- resistance
- control chip
- comparator
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- 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.)
- Expired - Fee Related
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- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The utility model is related to a kind of detection warning device, and in particular to a kind of soil moisture detects simple alarm.It is complex that the utility model will solve existing Soil K+adsorption warning device circuit, uses more component, the problem high of cost.The utility model includes soil moisture detection circuit, display screen and the buzzer BUZZER of control chip and connection corresponding with control chip respectively, and soil moisture detection circuit is connected with soil humidity sensor RT.The beneficial effects of the utility model are：Circuit is simple, it is easy to make, and can effectively reduce the subjective observation by Soil moisture of people and be irrigated so as to plant detrimental effect, improve irrigation efficiency, saving manpower.Humidity to plant soil can be measured accurately and rapidly, and can carry out warning reminding, and tool has an enormous advantage.
Description
Technical field
The utility model is related to a kind of detection warning device, and in particular to a kind of soil moisture detects simple alarm.
Background technology
Water is the essential essential condition of plant growth, and plant must could be normal under suitable soil moisture conditions
Growth.The moisture that plant consumes in growth is mainly derived from the moisture during root absorbs soil.Generally, people often because
For the reasons such as work often forget about plant are poured, for hydrophilic class plant, when hypohydration is absorbed, plant some work(
Can be normally carried out, blade is withered gradually, cause dehydration dead for a long time；Only when the enough moisture of plant absorption,
Its normal growth is conducive to develop.With the development of science and technology, many Soil K+adsorption warning devices are occurred in that, but existing soil
Earth detection warning device circuit is all complex, using more component, not only increases cost, and increase electricity when making
The detection workload on road.
The content of the invention
Problem to be solved in the utility model is to provide a kind of simple structure, can effectively to moisture in plant soil not
The soil moisture detection simple alarm that foot is reminded.
In order to solve the above technical problems, the utility model is adopted the following technical scheme that：
Design a kind of soil moisture detection simple alarm, including control chip and connection corresponding with control chip respectively
Soil moisture detection circuit, display screen and buzzer BUZZER, the soil moisture detection circuit is connected with soil moisture biography
Sensor RT；
The soil moisture detection circuit includes comparator M, slide rheostat RP1 and resistance R1, the forward direction of comparator M
Input is electrically connected with the slide plate of slide rheostat RP, and slide rheostat RP two ends are connected between power positive cathode, resistance R1
It is sequentially connected in series between positive source and negative pole with soil humidity sensor RT, the inverting input of comparator M is connected to
Between resistance R1 and soil humidity sensor RT, soil humidity sensor RT is electric resistance moisture sensor.
Preferably, the input pin of the control chip is electrically connected with the output end of comparator M, the output end of comparator M
It is connected with positive source by light emitting diode D1 and resistance R2, light emitting diode D1 just connects.
Preferably, the model LM393 of the comparator M.
Preferably, the AD input pins of the control chip are connected between resistance R1 and soil humidity sensor RT.
Preferably, the two ends of the slide rheostat RP1 are parallel with the light emitting diode D2 and resistance R4 being connected in series, hair
Optical diode D2 just connects.
The beneficial effects of the utility model are：
1. control circuit is simple, it is easy to make, and can effectively reduce the subjective observation by Soil moisture of people and be filled
Irrigate so as to plant detrimental effect, improve irrigation efficiency, saving manpower.The humidity of plant soil can be carried out accurately,
Quickly measurement, and warning reminding can be carried out, tool has an enormous advantage.
2. the detection of soil moisture can be completed by two kinds of connected modes, i.e. the output end of comparator is defeated with control chip
Enter pin to be directly connected to, manually adjust the resistance of RP1 to realize that the overdrying of soil is alarmed, or directly by the AD of control chip
Input pin is connected between resistance R1 and soil humidity sensor RT, and the overdrying for realizing soil by control chip was alarmed
Journey.
3. light emitting diode D2 detects whether simple alarm is in running order for showing soil moisture, light-emitting diodes
Pipe D1 is used to send the not enough warning message of soil moisture.
Brief description of the drawings
Fig. 1 is that soil moisture of the present utility model detects circuit diagram；
Fig. 2 is the circuit diagram that control chip of the present utility model is connected with display screen and buzzer BUZZER.
Specific embodiment
Specific embodiment of the present utility model is described in further detail with reference to the accompanying drawings and examples；
Embodiment 1：A kind of soil moisture detects simple alarm, as depicted in figs. 1 and 2, including control chip and with
Soil moisture detection circuit, display screen and buzzer BUZZER that control chip is connected respectively, soil moisture detection circuit
It is also associated with soil humidity sensor RT.
Soil moisture detection circuit includes comparator M, slide rheostat RP1 and resistance R1~R4, the model of comparator M
It is LM393, the positive input of comparator M is electrically connected with the slide plate of slide rheostat RP, and two ends of slide rheostat RP are connected to
Between the both positive and negative polarity of power supply, resistance R1 and soil humidity sensor RT are sequentially connected in series between positive source and negative pole, than
Inverting input compared with device M is connected between resistance R1 and soil humidity sensor RT, and soil humidity sensor RT is resistance-type
Humidity sensor.The output end of comparator M is connected by light emitting diode D1 and resistance R2 with positive source, light emitting diode D1
Just connect, resistance R3 is parallel to light emitting diode D1 and resistance R2 two ends；Light emitting diode D2 and resistance R4 are in parallel after being connected in series
In the two ends of slide rheostat RP1, light emitting diode D2 just connects；Electric capacity C2 is parallel to the two ends of soil humidity sensor RT, rises
Filter action.
The model Atmega328 of control chip, crystal oscillator is connected between the crystal oscillator pin 9 and pin 10 of control chip
Y1, crystal oscillator pin 9 and pin 10 connect power cathode by electric capacity C2 and electric capacity C3 respectively, the input pin 11 of control chip with than
Output end correspondence compared with device M is electrically connected, and display screen is LCD1602 display screens, and the pin 1 and pin 16 of display screen connect power supply respectively
Negative pole, the pin 2 and pin 15 of display screen connect positive source respectively, and pin 2 and the pin 5 of display screen are connected slip variable resistance respectively
The two ends of device RP2, the pin 3 of display screen is connected with the slide plate of slide rheostat RP2, and the pin 11 of display screen is distinguished to pin 14
Pin 1 successively with control chip, pin 28, pin 27 and pin 26 connect one to one.The pin 23 of control chip leads to
Cross resistance R5 to be connected with the base stage of NPN type triode Q1, the input of buzzer BUZZER is connected with positive source, buzzer
The output end of BUZZER is connected with the colelctor electrode of triode, and the transmitting collection of NPN type triode Q1 is connected with power cathode.
Its working method is：The slide plate position of slide rheostat RP1 is arranged on certain resistance position manually, by soil
Humidity sensor RT insertions are needed in the plant soil of detection, connect power supply, and soil moisture detection simple alarm is started working,
Light emitting diode D2 lights, and when soil moisture is abundant, soil humidity sensor RT resistances are small, comparator M positive inputs
Voltage is more than the voltage of reverse input end, and the output end output high level of comparator M, light emitting diode D1 does not work；Work as plant soil
When the wetness of earth is less than certain value, soil humidity sensor RT resistances increase, comparator M is more than to the voltage of anti-input
The voltage of positive input, the output end output low level of comparator M, light emitting diode D1 brightens, and comparator M is to control chip
One signal of input, control chip control display screen display alarm printed words prompting, while buzzer BUZZER alarms.
Embodiment 2：A kind of soil moisture detects simple alarm, and difference from Example 1 is, control chip it is defeated
Enter pin 11 to be not connected to the output end of comparator M, the AD input pins 12 of control chip are connected to resistance R1 and soil moisture
Between sensor RT.
Its working method is：By in the plant soil of soil humidity sensor RT insertion needs detections, power supply, soil are connected
Humidity Detection simple alarm is started working, and light emitting diode D2 lights, and control chip is directly by soil humidity sensor RT mono-
The voltage analog value at end is converted directly into digital quantity value, and then the digital quantity value with setting in control chip is compared, from
And control buzzer BUZZER whether to alarm, and humidity value is included on LCD display.
The utility model is described in detail above in conjunction with drawings and Examples, but, the skill of art
Art personnel, can also be specific to each in above-described embodiment it is understood that on the premise of the utility model objective is not departed from
Parameter is changed, and forms multiple specific embodiments, is common excursion of the present utility model, no longer detailed one by one herein
State.
Claims (5)
1. a kind of soil moisture detection simple alarm, it is characterized by, including control chip and corresponding with control chip respectively
The soil moisture of connection detects circuit, display screen and buzzer BUZZER, and it is wet that the soil moisture detection circuit is connected with soil
Degree sensor RT；
The soil moisture detection circuit includes comparator M, slide rheostat RP1 and resistance R1, the positive input of comparator M
End electrically connect with the slide plate of slide rheostat RP, and slide rheostat RP two ends are connected between power positive cathode, resistance R1 and native
Earth humidity sensor RT is sequentially connected in series between positive source and negative pole, and the inverting input of comparator M is connected to resistance
Between R1 and soil humidity sensor RT, soil humidity sensor RT is electric resistance moisture sensor.
2. soil moisture according to claim 1 detects simple alarm, it is characterized by, the input of the control chip is drawn
Pin is electrically connected with the output end of comparator M, and the output end of comparator M is connected by light emitting diode D1 and resistance R2 with positive source
Connect, light emitting diode D1 just connects.
3. soil moisture according to claim 2 detects simple alarm, it is characterized by, the model of the comparator M
LM393。
4. soil moisture according to claim 1 detects simple alarm, it is characterized by, the AD inputs of the control chip
Pin is connected between resistance R1 and soil humidity sensor RT.
5. the soil moisture according to claim 1-4 any one detects simple alarm, it is characterized by, described slip becomes
The two ends of resistance device RP1 are parallel with the light emitting diode D2 and resistance R4 being connected in series, and light emitting diode D2 just connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621349351.4U CN206259006U (en) | 2016-12-09 | 2016-12-09 | Soil moisture detects simple alarm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621349351.4U CN206259006U (en) | 2016-12-09 | 2016-12-09 | Soil moisture detects simple alarm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206259006U true CN206259006U (en) | 2017-06-16 |
Family
ID=59028829
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621349351.4U Expired - Fee Related CN206259006U (en) | 2016-12-09 | 2016-12-09 | Soil moisture detects simple alarm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206259006U (en) |
-
2016
- 2016-12-09 CN CN201621349351.4U patent/CN206259006U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170616 Termination date: 20181209 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |