CN201898768U - Plant micro-metering automatic irrigation instrument - Google Patents
Plant micro-metering automatic irrigation instrument Download PDFInfo
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- CN201898768U CN201898768U CN2010206147007U CN201020614700U CN201898768U CN 201898768 U CN201898768 U CN 201898768U CN 2010206147007 U CN2010206147007 U CN 2010206147007U CN 201020614700 U CN201020614700 U CN 201020614700U CN 201898768 U CN201898768 U CN 201898768U
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Abstract
The utility model provides a plant micro-metering automatic irrigation instrument which comprises a control device, a computer, a power supply, a plurality of groups of LVDT (Linear Variable Differential Transformer) sensors, a plurality of signal transmitters and an AD (Analog-to-Digital) converter, wherein the computer, the power supply and the AD converter are all connected with the control device through interfaces; the power supply supplies power to the control device and the computer through power interfaces; the groups of LVDT sensors are correspondingly connected with the signal transmitters one to one; each signal transmitter is respectively connected with the AD converter; each LVDT sensor is arranged at a stem of each plant; and the control device is connected with an external water pump motor through a device which is used for controlling the opening and the closing of the water pump motor. In the instrument, physiological parameters of the plant growth are used as indexes of the automatic irrigation, and the transmission function is realized by combining the LVDT sensors with an AD698 chip so that the measurement accuracy is high. Through the instrument, plant micro-metering technology is applied to the field of irrigation so that great theoretical and practical values are provided.
Description
Technical field
The utility model belongs to microdisplacement measurement and irrigates instrument design field, particularly a plant species micrometer automatic irrigation instrument.
Background technology
The plant micro-measuring technique is that the stem diameter or the fruit dimension of reflection plant growth state are carried out in real time high-acruracy survey constantly, then surveying record is analyzed, draw all kinds of physiological parameters of plant growing, thus the factor and the condition of the growing state of a research time period of kindred plant and the different plant growings of influence.Along with the development gradually of intelligent electronic product, this technology also begins more and more to be paid close attention to.
Present existing irrigation instrument guidance method has water balance method, wawter tension mensuration etc., substantially be that humidity and weather conditions according to soil determine whether irrigating, these class methods can not accurately reflect the arid situation of soil all sidedly, such as, in the plant root region not simultaneously, the humidity of the soil of measuring has very big difference, does the judgement that makes mistake thereby cause irrigating instrument.
Therefore, consider that the plant micro-measuring technique is applied to the irrigation field has very big theory and practical value.
The utility model content
The shortcoming that main purpose of the present utility model is to overcome prior art provides a plant species micrometer automatic irrigation instrument with not enough, and its detection is accurate, easy to use.
The purpose of this utility model realizes by following technical scheme: a plant species micrometer automatic irrigation instrument, comprise control device, calculator, power supply, the LVDT sensor, signal transmitting device and AD converter, calculator, power supply all links to each other with control device by interface with AD converter, power supply by power interface to control device, computer power supply, many group LVDT sensors and signal transmitting device connect one to one respectively, each signal transmitting device links to each other with AD converter respectively, each LVDT sensor is arranged at the stem place of each strain plant, and control device is connected by the device that is used for the switching of control of pump motor with extraneous pump motor.
As preferably, described control device is core with the single-chip microcomputer, the timing acquiring data, and data are saved in the calculator.
Described AD converter is connected with 1-8 signal transmitting device.
Described LVDT sensor measurement scope is when the 0-10 millimeter, and minimum resolution is 10 microns.
Described power supply is 220V Alternating Current Power Supply or storage battery power supply.
Communication interface between described calculator and the control device adopts the RS232 interface.
Described calculator adopts the embedded computer based on RAM9.
The described device that is used for the switching of control of pump motor is contactor or solid-state relay.
Basic principle of the present utility model is: vegetative period, plant organ volume or stem diameter changed in time diurnal periodicity, can judge by measuring the physiological parameter that this variation and analysis draw plant growing whether plant is in drought status.At first, a plurality of LVDT sensors are arranged at many strains plant stem place respectively, when plant growing changes, can make the iron core in the LVDT sensor produce a displacement, thereby export a voltage signal to the signal transmitting device, the signal transmitting device is sent to AD converter by interface with this voltage signal, the data that a plurality of measurement passages that AD converter will receive transmit are sent to control device, control device is saved in data in the electronic hard disc, and analysis draws the physiological parameter of plant growing, compare with the critical value of the plant growing physiological parameter that is provided with again, judge whether plant is in drought status, if be in drought status then send pouring instruction to being used for the device that the control of pump motor opens and closes, open pump motor, realize irrigating.Simultaneously can in calculator, check and analyze the plant growing situation.
The utility model compared with prior art has following advantage and beneficial effect:
1, the utility model is realized automatic irrigation by direct measurement plant stem diameter, has both comprised the water balance method of weather conditions, has comprised the soil water potential method of soil water regime again, can accurately react plant self to water demand.
2, the utility model employing LVDT sensor and AD698 chip combine to realize becoming and send function, certainty of measurement height.
3, the utility model is applied to the irrigation field with the plant micro-measuring technique, has very big theory and practical value.
Description of drawings
Fig. 1 is the stem diameter variation schematic diagram of diurnal periodicity in time of normal growth phase plant;
Fig. 2 is the utility model structural representation;
Fig. 3 is a LVDT sensor measurement schematic diagram in the utility model;
Fig. 4 is a signal transmitting device structure principle chart in the utility model;
Fig. 5 is the principle schematic of automatic irrigation control external circuits in the utility model.
Embodiment
Below in conjunction with embodiment and accompanying drawing the utility model is described in further detail, but embodiment of the present utility model is not limited thereto.
Embodiment 1
As shown in Figure 1, the diameter of plant stem is along with change diurnal periodicity time, and the time interval among the figure between two peak values or the valley is 24 hours.Since daytime plant leaf blade moisture transpiration greater than the absorption of root, current lose in the plant corpus, so the plant stem diameter diminishes; Night plant leaf blade moisture transpiration less than the absorption of root, it is big that the plant stem diameter becomes.The plant of normal growth phase, its stem diameter is wavy increase in time, promptly second day peak value was greater than first day peak value, but under drought status, even under the constant situation of other condition of soil (nutrient in environmental temperature, air humidity, illumination, the soil etc.), because the moisture that run off daytime in the plant corpus can not get in time replenishing at night, can cause the plant stem diameter not recover, even be wavy diminishing in time on time.So by clean increment (DG) of the day of measuring plant organ dimension as shown in FIG., restore required time (RT) plant organ dimension day fully, plant organ dimension day maximum collapse amount physiological parameters such as (MDS) can judge whether plant is in drought status.The utility model is promptly realized automatic irrigation according to this principle.
As shown in Figure 2, the utility model is according to a plant species micrometer automatic irrigation instrument of above-mentioned principle design, comprise control device, calculator, power supply, the LVDT sensor, signal transmitting device and AD converter, calculator, power supply all links to each other with control device by interface with AD converter, power supply by power interface to control device, computer power supply, many group LVDT sensors and signal transmitting device connect one to one respectively, each signal transmitting device links to each other with AD converter respectively, each LVDT sensor is arranged at the stem place of each strain plant, and control device is connected by the device that is used for the switching of control of pump motor with extraneous pump motor.
Described control device is core with the single-chip microcomputer, the timing acquiring data, and data are saved in the calculator.
Described AD converter is connected with 8 signal transmitting devices.
Described power supply is the 220V Alternating Current Power Supply.
Communication interface between described calculator and the control device adopts the RS232 interface.
Described calculator adopts the embedded computer based on RAM9.
Described LVDT sensor measurement scope is in the time of 0～10 millimeter, and minimum resolution is 10 microns.
As shown in Figure 3, the circle among the figure is the section of plant stem, and plant stem is a stiff end with the dotted line on the left side, and LVDT is a stiff end with the dotted line on the right.Plant stem diameter contraction or expansion will promote position unshakable in one's determination and move, and cause the output voltage of differential transformer to change.The output voltage variation that is transformer has directly reflected the stem diameter variation.
As shown in Figure 4, adopt the AD698 chip to realize the signal transmitting function in the present embodiment, AD698 chip internal crystal oscillator and reference voltage source and outer member are formed sinusoidal output source, through the sine wave of amplifier amplification output frequency and voltage constant, deliver to the former limit of LVDT, deliver to the B amplifier simultaneously, the differential output voltage of LVDT is delivered to the A amplifier, carry out ratio and amplify, become direct current output after shaping, the filtering, eliminated the influence of frequency and changes in amplitude like this.
As shown in Figure 5, the described device that is used for the switching of control of pump motor is a contactor.When day clean increment of control device according to the plant organ dimension, plant organ dimension day is restored required time fully, after the critical value of physiological parameters such as plant organ dimension day maximum collapse amount is sent the instruction that needs to irrigate, can open contactor, connect circuit, the control of pump motor is started working then, finishes irrigation.
Basic principle of the present utility model is: vegetative period, plant organ volume or stem diameter changed in time diurnal periodicity, can judge by measuring the physiological parameter that this variation and analysis draw plant growing whether plant is in drought status.At first, a plurality of LVDT sensors are arranged at many strains plant stem place respectively, when plant growing changes, can make the iron core in the LVDT sensor produce a displacement, thereby export a voltage signal to the signal transmitting device, the signal transmitting device is sent to AD converter by interface with this voltage signal, the data that a plurality of measurement passages that AD converter will receive transmit are sent to control device, control device is saved in data in the electronic hard disc, and analysis draws the physiological parameter of plant growing, compare with the critical value of the plant growing physiological parameter that is provided with again, judge whether plant is in drought status, if be in drought status then send pouring instruction to being used for the device that the control of pump motor opens and closes, open pump motor, realize irrigating.Simultaneously can in calculator, check and analyze the plant growing situation.
Embodiment 2
Present embodiment except that following characteristics other structures with embodiment 1: described AD converter is connected with 1 signal transmitting device.
Described power supply is a storage battery power supply.
The described device that is used for the switching of control of pump motor is a solid-state relay.
Embodiment 3
Present embodiment except that following characteristics other structures with embodiment 1: described AD converter is connected with 2 signal transmitting devices.
The foregoing description is the utility model preferred implementation; but embodiment of the present utility model is not restricted to the described embodiments; other any do not deviate from change, the modification done under spiritual essence of the present utility model and the principle, substitutes, combination, simplify; all should be the substitute mode of equivalence, be included within the protection domain of the present utility model.
Claims (8)
1. a plant species micrometer automatic irrigation instrument, it is characterized in that, comprise control device, calculator, power supply, the LVDT sensor, signal transmitting device and AD converter, calculator, power supply all links to each other with control device by interface with AD converter, power supply by power interface to control device, computer power supply, many group LVDT sensors and signal transmitting device connect one to one respectively, each signal transmitting device links to each other with AD converter respectively, each LVDT sensor is arranged at the stem place of each strain plant, and control device is connected by the device that is used for the switching of control of pump motor with extraneous pump motor.
2. plant micrometer automatic irrigation instrument according to claim 1 is characterized in that described control device is core with the single-chip microcomputer, the timing acquiring data, and data are saved in the calculator.
3. plant micrometer automatic irrigation instrument according to claim 1 is characterized in that described LVDT sensor measurement scope is in the time of 0～10 millimeter, and minimum resolution is 10 microns.
4. plant micrometer automatic irrigation instrument according to claim 1 is characterized in that described power supply is 220V Alternating Current Power Supply or storage battery power supply.
5. plant micrometer automatic irrigation instrument according to claim 2 is characterized in that, the communication interface between described calculator and the control device adopts the RS232 interface.
6. plant micrometer automatic irrigation instrument according to claim 5 is characterized in that, described calculator adopts the embedded computer based on RAM9.
7. plant micrometer automatic irrigation instrument according to claim 1 is characterized in that, the described device that is used for the switching of control of pump motor is contactor or solid-state relay.
8. plant micrometer automatic irrigation instrument according to claim 1 is characterized in that described A D converter is connected with 1-8 signal transmitting device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206147007U CN201898768U (en) | 2010-11-19 | 2010-11-19 | Plant micro-metering automatic irrigation instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206147007U CN201898768U (en) | 2010-11-19 | 2010-11-19 | Plant micro-metering automatic irrigation instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201898768U true CN201898768U (en) | 2011-07-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206147007U Expired - Fee Related CN201898768U (en) | 2010-11-19 | 2010-11-19 | Plant micro-metering automatic irrigation instrument |
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| CN (1) | CN201898768U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104655680A (en) * | 2015-02-12 | 2015-05-27 | 无锡市崇安区科技创业服务中心 | Plant internal water detection and water supplementation control system based on micrometer |
| CN108891046A (en) * | 2018-07-19 | 2018-11-27 | 华南理工大学 | A kind of plastics Microirrigation belt and its manufacturing method and equipment based on porous media leakage |
| CN112167027A (en) * | 2020-10-30 | 2021-01-05 | 江苏万木源建设集团有限公司 | Irrigation system for afforestation |
-
2010
- 2010-11-19 CN CN2010206147007U patent/CN201898768U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104655680A (en) * | 2015-02-12 | 2015-05-27 | 无锡市崇安区科技创业服务中心 | Plant internal water detection and water supplementation control system based on micrometer |
| CN108891046A (en) * | 2018-07-19 | 2018-11-27 | 华南理工大学 | A kind of plastics Microirrigation belt and its manufacturing method and equipment based on porous media leakage |
| CN108891046B (en) * | 2018-07-19 | 2023-09-26 | 华南理工大学 | Plastic micro-irrigation belt based on porous medium leakage and manufacturing method and equipment thereof |
| CN112167027A (en) * | 2020-10-30 | 2021-01-05 | 江苏万木源建设集团有限公司 | Irrigation system for afforestation |
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Legal Events
| Date | Code | Title | Description |
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| 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: 20110720 Termination date: 20111119 |