CN202903721U - Device for measuring and controlling soil humidity - Google Patents
Device for measuring and controlling soil humidity Download PDFInfo
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- CN202903721U CN202903721U CN 201220575540 CN201220575540U CN202903721U CN 202903721 U CN202903721 U CN 202903721U CN 201220575540 CN201220575540 CN 201220575540 CN 201220575540 U CN201220575540 U CN 201220575540U CN 202903721 U CN202903721 U CN 202903721U
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Abstract
The utility model relates to the technical field of humidity measuring products, and in particularly relates to a device for measuring and controlling the soil humidity. According to the device, an electromagnetic valve control circuit is arranged outside a processor module; a soil humidity acquisition module and a state indicating module are respectively connected with the processor module; the processor module is also connected with a keyboard, a liquid crystal display (LCD) screen and a global system for mobile communication (GSM) transmitting module; the GSM transmitting module is wirelessly connected with a GSM receiving module; and a personal computer (PC) is connected with the GSM receiving module through a serial communication interface. The device is simple in structure, low in cost, strong in corrosion resistance and wide in application range and has a function of wirelessly transmitting soil humidity data, and the processor module controls the GSM transmitting module to transmit and store the soil humidity data in the PC to back up the soil data, so that the safety of the data is ensured, important data are prevented from losing, and a system can conveniently perform data analysis and remote monitoring.
Description
Technical field
The utility model relates to the moisture measurement product technical field, specifically a kind of soil moisture measure and control device.
Background technology
Soil moisture is the key factor of plant growth, detection to soil moisture has important meaning to modern agricultural development, can realize the scientific and technicalization management plantation of agricultural and family planting, and major part uses artificial mode that the growing environment of plant is detected in the scientific plantation of modern countryside, even do not detect, not only wasted manpower but also increased cost, and can not realize scientific and the precision plantation.Humidity Detection and the control device of this design are economical and practical, and adaptability is good, can be in the plantation of rural area or city large-scale popularization.
The soil humidity detector major part of selling on the market now all is to be special unit, the high precision humidity detector of special production of units, as being used for the cotton Humidity Detection, weather bureau is used for the detection of air humidity, etc., their measuring accuracy is all very high, but corrosion resistance is all very poor, and moving then thousands of units, can not be real to be used for accuracy requirement not too high, but in the more intense soil of corrosivity, more can not be used for the control to external devices.So this soil Detection ﹠ Controling device just has certain practicality, and timeliness, can satisfy the demand of rural area and city Planting Crops and cauliflower trees.
Agricultural production has critical role in the economic development of China, for agricultural production provides in time, reliably technical service has become one of important duty of meteorological department.Along with the pay attention to day by day of national governments at all levels to agricultural production, my unit has also carried out many researchs at aspects such as serving agriculture, promotion increasing peasant income. the every problem in the agricultural production has also been carried out extensive investigation.Investigation is found. some famous and precious kind of horticultural gardening, greenhouse flowers, booth vegetable etc.Soil moisture is had high requirement, and soil moisture not only has a strong impact on its normal growth not at that time.Even can cause the plantation product dead, cause peasant's heavy losses.For this reason, friend peasant who is engaged in such agricultural production is starved of that a kind of cost is low, volume is little and detect reliable soil moisture detector, for the moisture supply provides foundation.
Summary of the invention
For the deficiencies in the prior art, the purpose of this utility model provides a kind of soil moisture measure and control device, and it is easy to operate, uses simply, and equipment cost is low, and extraordinary practical value is arranged.
The technical scheme that its technical matters that solves the utility model adopts is: a kind of soil moisture measure and control device, comprise solenoid valve control circuit, processor module, the soil moisture acquisition module, the state indicating module, LCD display, keyboard, the GSM sending module, the GSM receiver module, PC, it is characterized in that: described processor module outer setting has solenoid valve control circuit, the soil moisture acquisition module, the state indicating module is connected with processor module respectively, processor module also is connected with keyboard, LCD display and GSM sending module, GSM sending module and GSM receiver module adopt wireless connections, and PC is connected by serial communication interface with the GSM receiver module.
The beneficial effects of the utility model are:
1, this appliance arrangement is simple in structure, and cost is low, and corrosion resistance is strong, and range of application is more extensive.
2, this utility model has soil moisture data wireless transfer function, by processor module control GSM sending module with the soil moisture data transmission and store on the PC, the soil data are backed up, guarantee the safety of data, prevented losing and can making things convenient for system to carry out data analysis and remote monitoring of important data.
Description of drawings
Fig. 1 is the utility model structural framing synoptic diagram.
Description of reference numerals: 1-solenoid valve control circuit; The 2-processor module; 3-soil moisture acquisition module; 4-state indicating module; The 5-LCD display screen; The 6-keyboard; The 7-GSM sending module; The 8-GSM receiver module; The 9-PC machine.
Embodiment
Below in conjunction with specific embodiment, further set forth the utility model, should be understood that these embodiment only are used for explanation the utility model and are not used in restriction scope of the present utility model.Should be understood that in addition those skilled in the art can make various changes or modifications the utility model after the content of having read the utility model instruction, these equivalent form of values drop on application appended claims limited range equally.
Fig. 1 is a kind of soil moisture measure and control device of the utility model structural framing synoptic diagram, comprise solenoid valve control circuit 1, processor module 2, soil moisture acquisition module 3, state indicating module 4, LCD display 5, keyboard 6, GSM sending module 7, GSM receiver module 8, PC 9, described processor module 2 outer setting have solenoid valve control circuit 1, soil moisture acquisition module 3, state indicating module 4 is connected with processor module 2 respectively, processor module 2 also is connected with keyboard 6, LCD display 5 and GSM sending module 7, GSM sending module 7 adopts wireless connections with GSM receiver module 8, and PC 9 and GSM receiver module 8 are connected by serial communication interface.
Soil moisture acquisition module 3 is converted to voltage signal by Arduino Moisture Sensor soil humidity sensor with soil moisture.Convert the voltage that collects to digital quantity through the ADC0809 chip, send processor module 2 to.Processor module 2 adopts the AT89S51 chip microcontroller, and single chip computer AT 89S51 carries out corresponding data to digital quantity to be processed, and utilizes LCD display 5 to show current soil moisture value.The limit value of humidity detection is set by the button 6 of single-chip microcomputer outside, the limit value that the humidity value that detects when soil humidity sensor reaches setting constantly, the solenoid valve control circuit 1 of single-chip microcomputer starting relay, plant is supplied water, and state indicates electric module 4 to determine the current overload alarm state that whether is in.In addition, single-chip microcomputer is crossed gsm module TC35I with timing mode with the soil moisture data communication device and is sent to PC 9, and the soil moisture data are backed up.
Increase in addition the expanded range that a plurality of humidity sensors and solenoid valve can make control, realize extensive large-area control, control other mechanism thereby other data volumes can also be set, realize scientific, digitizing, scale control.
The AT89S51 single-chip microcomputer is 40 pin dual-in-line chips, and four I/O mouth P0 are arranged, and P1, P2, P3, each bar I/O line can both do output or input independently.AT89S51 has following hardware resource: 4k bytes Flash, 256 byte RAM, 32 I/O mouth lines, WatchDog Timer, 2 data pointers, three 16 bit timing device/counters, 2 grades of interrupt structures of one 6 vector, crystal oscillator and clock circuit in the full duplex serial port, sheet.In addition, AT89S51 can be down to the operation of 0Hz static logic, supports 2 kinds of softwares can select energy-saving mode.Under the idle pulley, CPU quits work, and allows RAM, timer/counter, serial ports, interruption to work on.Under the power down protection mode, the RAM content is saved, and oscillator is frozen, and all work of single-chip microcomputer stop, until next the interruption or hardware reset.
The single-chip microcomputer main control circuit has comprised clock circuit and the reset circuit of single-chip microcomputer.What the design adopted is internal clock circuit.There is a high-gain inverting amplifier that is used for consisting of oscillator single-chip microcomputer inside, 18 pin XTAL1 are input ends of amplifier, 19 pin XTAL2 are output terminals of amplifier, and the crystal oscillator of cross-over connection and trimmer consist of a stable self-excited oscillator together as feedback element between these two pins.9 pins are the RESET input of single-chip microcomputer, connect electric capacity, and resistance and resistance and button form manual reset circuit.
In concrete application, in order to adapt to the habit of different cultivars plant, need artificially to set the upper lower limit value of soil moisture, by to pressing the higher limit of key change humidity.
When single-chip microcomputer was started working, single-chip microcomputer ceaselessly detected P0.2 pin and P0.4 pin.The P0.2 pin is connected with upper limit operating key; The P0.4 pin is connected with the beginning key.When the beginning key was pressed, single-chip microcomputer started the detection to the P0.2 pin.Utilize upper limit operating key to adjust the soil moisture higher limit.
Reason in view of cost and concrete soil environment, this humidity sensor has been selected the suitable Arduino Moisture Sensor soil humidity sensor of price, sensor surface has been done gold-plated processing, and it has certain resistance to corrosion, can long period of soaking in soil.What this soil humidity sensor was exported is the analog quantity of voltage.He is inserted soil, then use A/D converter to read magnitude of voltage corresponding to soil moisture.
This is the moisture that an easy moisture transducer can be used for detecting soil, and when the soil lack of water, sensor output value will reduce, otherwise will increase.Soil humidity sensor forms loop by connecting with soil, adds 5v voltage at its two ends, and when the humidity ratio in the soil was larger, the resistance of soil reduced, and the voltage that divider resistance is got increases, and around this principle detects soil moisture.Convert the voltage that collects to digital quantity through ADC0809 and send single-chip microcomputer to, carrying out corresponding data in single-chip microcomputer processes, the humidity value that detects when sensor reaches design upper in limited time, single-chip microcomputer moves accordingly, pilot relay and then control solenoid valve carry out Shi Shui to soil.
Modulus conversion chip ADC 0809 is cmos device, not only comprises the ADC part of one 8 successive approximation, but also analog multichannel switch and the passage addressing logic of 8 passages are provided, thereby has reason it as simple " data acquisition system (DAS) ".Utilize it can directly input 8 single-ended simulating signal timesharing and carry out A/D conversion, in the touring detection of multiple spot and process control, motion control, use very extensive.
The work schedule of ADC 0808/0809.When the channel selecting address was effective, ale signal one occurred, and the address just is latched, and at this moment conversion starting signal occurs after following ALE closely at once.The rising edge of START resets successive approximation register SAR, and 2 μ s after this rising edge added in 8 clock period, and eoc signal with indication conversion operations well afoot, uprises level until convert rear EOC with the step-down level again.After microprocessor is received the eoc signal that becomes high level, just send immediately the OE signal, open triple gate, read transformation result.
The control mode that starts conversion ADC 0808/0809 is pulse control type.Paired pulses starts the ADC chip of conversion, applies the pulse signal that a width meets the chip requirement as long as start switched pins at it, just can start conversion and automatically finish.General energy and the matching used chip of processor, the I/O write pulse of processor can both satisfy the ADC chip to the requirement of starting impulse.
Single-chip microcomputer provides clock signal to ADC0809, selects the input channel of converter.The P0 mouth of single-chip microcomputer connects the conversion amount output terminal of ADC0809, and ADC0809 is input to single-chip microcomputer and is presented at LCD display 5 by Single-chip Controlling after the analog quantity of input is converted to digital quantity.The P2.4--P2.6 of P2 mouth meets the channel selecting end ADDA of ADC0809, and ADDB, ADDC, other mouthfuls of P2 mouth be respectively at the CLK of ADC0809, START, and OE, ALE holds connection, guarantees the A/D converter normal operation,
System adopts the 12M crystal oscillator to produce the internal clock signal that AT89S51 is in pulse, converts signal by interrupt mode.Sheet selects OE to connect high level, makes it be in all the time selected state.Select a road in eight paths by keyswitch, this road voltage is sent into the ADC0809 respective channel, scm software arranges ADC0809 and begins the A/D conversion, the EOC port of EOC ADC0809 produces high level, utilize the P0 mouth of single-chip microcomputer as the input signal that converts, single-chip microcomputer reads in by the P0 mouth after converting, and then is converted to project data (0.00-5.00V) by calculating, and system accesses display subroutine.Data communication device is crossed the P1 mouth and is presented at LCD display 5 after will transforming.
The numeral after LCD1602 shows conversion is adopted in design, can make this system's simple, intuitive.The LCD1602 liquid crystal is industrial Character Mode LCD, can show simultaneously 32 characters.Character occurrence memory stores in the LCD1602 liquid crystal display 160 different dot character figures, it is from capital and small letter that English alphabet is arranged, arabic numeral, and Japanese ideogram symbol commonly used etc., each character has a fixed code.Can directly write software program during use gets final product by certain sequential driving.In addition, it has the demonstration legibility, the characteristics that price is relatively cheap.
When single-chip microcomputer was connected with the LCD1602 liquid crystal display, 1 and 3 pins of LCD1602 were VSS and VEE ground connection, the second pin VDD+5V voltage, the 15th, 16 pin respectively anodal the and negative pole of backlight for connecing high level and ground connection.RS is data/command selection end, and RW is the read/write selecting side, connects respectively P3.0 and the P3.2 mouth of single-chip microcomputer, by the selection of single-chip microcomputer coding control LCD1602 register.When being 1, RS selects data register, when RS is 0, and the selection instruction register.Read data when RW is high level is write data when RW is low level.The 8th pin to the 14 pins of LCD1602 are the P0.0-P0.7 mouth that the output terminal of liquid crystal display connects respectively single-chip microcomputer, and LCD1602 enables the P3.1 mouth that control end connects single-chip microcomputer, enables when running into negative edge.
Adopted 2 minutes bore solenoid valves of a G1/4, single-chip microcomputer is by analyzing the break-make of cut-offfing and then control solenoid valve that gathers the information pilot relay that comes.
State indicating module 4 adopts passive piezoelectric type KM3712x type hummer BUZZER.When the pin P1.1 of single chip computer AT 89S51 puts 1, triode Q1 conducting, buzzer warning.Adopt the function of the high-low level driving hummer of single chip computer AT 89S51, when if the soil moisture value all reaches alarm limit, the output high level of Single-chip Controlling pin P1.1, through being output as low level behind the triode C9013, the hummer positive pole connects+5V power drives sounding.
Claims (1)
1. soil moisture measure and control device, comprise solenoid valve control circuit, processor module, the soil moisture acquisition module, the state indicating module, LCD display, keyboard, the GSM sending module, the GSM receiver module, PC, it is characterized in that: described processor module outer setting has solenoid valve control circuit, the soil moisture acquisition module, the state indicating module is connected with processor module respectively, processor module also is connected with keyboard, LCD display and GSM sending module, GSM sending module and GSM receiver module adopt wireless connections, and PC is connected by serial communication interface with the GSM receiver module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220575540 CN202903721U (en) | 2012-11-05 | 2012-11-05 | Device for measuring and controlling soil humidity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220575540 CN202903721U (en) | 2012-11-05 | 2012-11-05 | Device for measuring and controlling soil humidity |
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| Publication Number | Publication Date |
|---|---|
| CN202903721U true CN202903721U (en) | 2013-04-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220575540 Expired - Fee Related CN202903721U (en) | 2012-11-05 | 2012-11-05 | Device for measuring and controlling soil humidity |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103592342A (en) * | 2013-11-20 | 2014-02-19 | 四川研成通信科技有限公司 | Soil humidity detecting device |
| CN105432428A (en) * | 2016-01-22 | 2016-03-30 | 福建师范大学福清分校 | ARM-based water-saving irrigation intelligent system and implementation method thereof |
| CN107703983A (en) * | 2017-09-30 | 2018-02-16 | 中山市民众镇民众中心小学 | A kind of greenhouse controllable temperature psychrometric means |
| US10055781B2 (en) | 2015-06-05 | 2018-08-21 | Boveda Inc. | Systems, methods and devices for controlling humidity in a closed environment with automatic and predictive identification, purchase and replacement of optimal humidity controller |
| US10909607B2 (en) | 2015-06-05 | 2021-02-02 | Boveda Inc. | Systems, methods and devices for controlling humidity in a closed environment with automatic and predictive identification, purchase and replacement of optimal humidity controller |
-
2012
- 2012-11-05 CN CN 201220575540 patent/CN202903721U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103592342A (en) * | 2013-11-20 | 2014-02-19 | 四川研成通信科技有限公司 | Soil humidity detecting device |
| US10055781B2 (en) | 2015-06-05 | 2018-08-21 | Boveda Inc. | Systems, methods and devices for controlling humidity in a closed environment with automatic and predictive identification, purchase and replacement of optimal humidity controller |
| US10909607B2 (en) | 2015-06-05 | 2021-02-02 | Boveda Inc. | Systems, methods and devices for controlling humidity in a closed environment with automatic and predictive identification, purchase and replacement of optimal humidity controller |
| CN105432428A (en) * | 2016-01-22 | 2016-03-30 | 福建师范大学福清分校 | ARM-based water-saving irrigation intelligent system and implementation method thereof |
| CN107703983A (en) * | 2017-09-30 | 2018-02-16 | 中山市民众镇民众中心小学 | A kind of greenhouse controllable temperature psychrometric means |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130424 Termination date: 20131105 |