CN102090288A - Device and method for monitoring working condition of automatic irrigation fertilizer distributor - Google Patents
Device and method for monitoring working condition of automatic irrigation fertilizer distributor Download PDFInfo
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Abstract
The invention discloses a device and method for monitoring the working condition of an automatic irrigation fertilizer distributor. A fertilizer mixing tank is provided with a device for detecting the liquid level of the fertilizer mixing tank; the output signals of an EC (Electrical Conductivity) value sensor, a pH value sensor, the device of detecting the liquid level of the fertilizer mixing tank and a flow meter are respectively connected with an intelligent controller; a fertilizer-application control solenoid valve, a fertilizer mixing control solenoid valve, an irrigation control solenoid valve, an irrigated area control solenoid valve, a fertilizer adsorption control solenoid valve, a water supply pump and a fertilizer application pump are respectively connected to an electrical control system; and the electrical control system is connected with the intelligent controller. The states of the whole working processes of supplying water, adsorbing a fertilizer, preparing a nutrient solution and irrigating/ applying the fertilizer can be monitored, and the practical fertilizer proportion of the nutrient solution conforms to the preset proportion requirement.
Description
Technical field
The present invention relates to a kind of automatic irrigation fertilizer distributor working state monitoring system and monitoring method thereof, in particular for the automatic irrigation fertilizer distributor apparatus for monitoring working state and the monitoring method thereof of industrialized agriculture micro drip-irrigation system.
Background technology
Industrialized agriculture cultivated areas such as China's modern greenhouse, greenhouse by solar heat and plastic tunnel are very big, industrialized agriculture automated job equipment technology has also obtained tremendous development, not only the micro drip-irrigation system is widely used, and can once finish the automatic irrigation fertilizer distributor of irrigating and applying fertilizer and also progressively obtain applying.The automatic irrigation fertilizer distributor can be according to the needs of protected crop, the nutrient solution that when irrigating various fertilizer and nutriment is dissolved into various ratios automatically in the ratio of setting accurately supplies to the root soil of protected crop together, by accurate control irrigation volume, fertilizing amount, irrigation and fertilization time, not only can effectively improve water and fertilizer utilization, economize on resources, reduce environmental pollution, and can realize full-automatic operation, and greatly improve operating efficiency, adapt to the needs of large-scale production.
The automatic irrigation fertilizer distributor generally is made up of water supply installation, fertilizer-injecting device, mixed fertile device, irrigation/fertilising control device, electric control system, intelligent observing and controlling system and corresponding pipeline and circuit etc., complex structure, fault rate are higher, and, will cause direct influence to industrialized agriculture production in case break down.For this reason, the automatic irrigation fertilizer applicator generally all is provided with certain state monitoring apparatus, in order to can in time find the system failure and make emergent management.For example, the Nutriflex of Dutch Priva company and NutriMix series automatic irrigation fertilization system, number of patent application are that disclosed drip-irrigation fertilising intelligent control system all is provided with nutrient solution EC(electrical conductivity in 03104695.9) value/pH value monitoring and mix fertilizer jar liquid level monitoring device; Number of patent application is that disclosed drip-irrigation fertilising intelligent control system can also carry out the status monitoring of pump, valve in 03104695.9, but does not provide embodiment; Disclosed full-automatic fertigation filtering integral machine all is equipped with a fertile speed indicating device of suction among the ZL03206584.1 before each venturi fertilizer injector, so that carry out the personal monitoring to inhaling fertile state.But above system or device do not realize all that the automatic irrigation fertilizer applicator is fertile from supplying water, inhaling, compounding is to irrigating/status monitoring of the full course of work of fertilising, especially can't realize inhaling the automatic monitoring of fertile link.And when riches all the way in the multichannel fertilizer mother liquor when give birth to inhaling fertile fault, often the dosage by other fertilizer mother liquors injects, also can meet the requirements of nutrient solution EC value/pH value, thereby cause nutrient solution EC value/pH value monitoring link can't find this fault, not only fault is difficult to find, and can directly cause actual fertilizer ratio to depart from the expection requirement far away, might cause extensive damage to protected crop.
Summary of the invention
The invention provides a kind of monitoring device and monitoring method that can realize the full course of work status monitoring of automatic irrigation fertilizer distributor.Utilize this system to monitor the water supply of automatic irrigation fertilizer applicator, the duty of inhaling fertile, compounding and irrigation/links such as fertilising.
Monitoring device of the present invention adopts following technical scheme: the automatic irrigation fertilizer applicator includes supply channel, irrigation pipeline, injection tube road, fertilizer mixing pipeline, fertilizing pipeline, electric control system and intelligent controller, and supply channel comprises that supply-water pump, fertilising control magnetic valve, mixed fertile tank are communicated with successively; Irrigation pipeline comprises that irrigating pressure-regulating device, irrigation control magnetic valve, flowmeter and irrigated area control magnetic valve is communicated with successively; The injection tube road comprises fertilizer tank, inhales fertile speed indicator, inhales fertile control magnetic valve and venturi fertilizer injector is communicated with successively; Fertilizer mixing pipeline comprises that fertilizing pump, EC value sensor and pH value sensor, venturi fertilizer injector and mixed fertile tank in parallel are communicated with formation successively; Fertilizing pipeline is connected with the fertilising pressure-regulating device by fertilizing pump and is communicated with successively mixed fertile control magnetic valve, flowmeter and irrigated area control magnetic valve and consists of; The return line of fertilising pressure-regulating device connects mixed fertile tank; Be provided with mixed fertile tank liquid level detection device in the mixed fertile tank; EC value sensor, pH value sensor, mixed fertile tank liquid level detection device are connected output signal and are connected respectively intelligent controller with flowmeter; Described fertilising is controlled magnetic valve, mixed fertile control magnetic valve, irrigation control magnetic valve, irrigated area control magnetic valve, the fertile control of suction magnetic valve, supply-water pump and fertilizing pump and is connected respectively to electric control system, and electric control system connects intelligent controller.
Monitoring method of the present invention is: the status monitoring of 1) irrigating the course of work: intelligent controller detects the actual irrigation flow by flowmeter, irrigates flow with theory and compares, if difference within predetermined limits, is then irrigated course of work normal operation; 2) status monitoring of fertilising course of work water supply: at first inquire about current fertilising duty, if only water filling is not applied fertilizer, intelligent controller 9 detects mixed fertile tank actual liquid level by mixed fertile tank liquid level detection device, compare with the liquid level testing result of last time, draw the actual change trend of mixed fertile tank liquid level, then supply water normally if liquid level rises; If the fertilising of marginal not waterside mixes the actual change trend that fertile tank actual liquid level also calculates mixed fertile tank liquid level by mixed fertile tank liquid level detection device detection, if conform to then water supply normally with theoretical variation tendency; 3) the fertilising course of work is inhaled fertile status monitoring: fertilizer is sucked fertilizer mixing pipeline through the injection tube road by venturi fertilizer injector, the float of the fertile speed indicator of corresponding suction floats, inhaling the signal that fertile state monitoring apparatus outputs to intelligent controller changes, if comprise a certain fertilizer component in the ratio of nutrient solution, and corresponding inhale fertile state monitoring apparatus and do not detect state variation, then be that this road is inhaled fertile or inhaled fertile status monitoring fault is arranged; 4) status monitoring of fertilising course of work compounding: intelligent controller detects the EC value of nutrient solution/pH value in real time by EC value sensor and pH value sensor, and compare with setting value, intelligent controller according to the fiducial value of measured value and setting value regulate inhale fertile control magnetic valve open/close dutycycle to regulate the fertile speed of inhaling; 5) status monitoring of fertilising course of work fertilising: intelligent controller detects actual fertilising flow and the theory flow that applies fertilizer by flowmeter and compares, if difference within predetermined limits, the link of then applying fertilizer is working properly; 6) status monitoring of the fertilising course of work: carry out state-detection to supplying water, inhale fertilizer, compounding and fertilising at first successively, if all are normal, the course of work of then applying fertilizer normal operation, accumulative total dose.
Compared with prior art, the present invention has the following advantages:
1, can realize that the automatic irrigation fertilizer distributor inhales the automatic monitoring of fertile link duty, guarantee that the actual fertilizer ratio of nutrient solution meets predefined ratio requirement;
2, can realize that the automatic irrigation fertilizer distributor from supplying water, inhale status monitoring fertile, that nutrient solution is formulated into the full course of work of irrigation/fertilising, guarantees that the automatic irrigation fertilizer distributor is working properly.
Automatic irrigation fertilizer distributor apparatus for monitoring working state and monitoring method; be mainly used in the automatic irrigation fertilizer distributor of micro drip-irrigation system in the agricultural facilities such as modern greenhouse, scale greenhouse by solar heat and plastic tunnel, solve the working state monitoring problem of automatic irrigation fertilizer distributor.
Description of drawings
Fig. 1 is the general structure block diagram of automatic irrigation fertilizer distributor;
Fig. 2 is the status monitoring flow chart that the automatic irrigation fertilizer distributor is irrigated the course of work;
Fig. 3 is the status monitoring flow chart of automatic irrigation fertilizer distributor fertilising course of work water supply link;
Fig. 4 is that the automatic irrigation fertilizer distributor fertilising course of work is inhaled the status monitoring flow chart of fertile link;
Fig. 5 is the status monitoring flow chart of automatic irrigation fertilizer distributor fertilising course of work nutrient solution preparation link;
Fig. 6 is the status monitoring flow chart of automatic irrigation fertilizer distributor fertilising course of work fertilising link;
Fig. 7 is the status monitoring flow chart of the automatic irrigation fertilizer distributor fertilising course of work.
Among the figure: 1. irrigate pressure-regulating device, 2. fertilising control magnetic valve, 3. filter, 4. mix fertile jar liquid level detection device, 5. mix fertile jar, 6. supply-water pump, 7. hand-operated valve, 8. pond, 9. intelligent controller, 10. venturi fertilizer injector, 11. inhale fertile speed indicating device, 12. fertilizer tanks, 13. filter, 14. manual modulation valves, 15. inhale fertile state monitoring apparatus, 16. inhale fertile control magnetic valve, 17.EC value sensor, 18.pH value sensor, 19. filter, 20. fertilizing pump, 21. hand-operated valves, 22. fertilising pressure-regulating devices, 23. mix fertile control magnetic valve, 24. irrigate the control magnetic valve, 25. flowmeters, 26. irrigated areas control magnetic valve.
Embodiment
As shown in Figure 1, the automatic irrigation fertilizer distributor is made up of supply channel, irrigation pipeline, injection tube road, fertilizer mixing pipeline, fertilizing pipeline, electric control system, intelligent controller and corresponding pipeline and circuit etc.Wherein, supply channel mainly is communicated with successively by pond 8, hand-operated valve 7, supply-water pump 6, filter 3, fertilising control magnetic valve 2 and mixed fertile tank 5, consists of supply channel.Filter 3 also is connected with irrigation pressure-regulating device 1, and is communicated with successively irrigation control magnetic valve 24, flowmeter 25 and irrigated area control magnetic valve 26, consists of irrigation pipeline.The return line of irrigating pressure-regulating device 1 is connected to pond 8; Fertilizer tank 12, filter 13, manual modulation valve 14, the fertile speed indicating device 11 of suction, suction fertile control magnetic valve 16 and venturi fertilizer injector 10 are communicated with successively, constitute the injection tube road.Mixed fertile tank 5, hand-operated valve 21, fertilizing pump 20, filter 19, EC value sensor 17 and pH value sensor 18, venturi fertilizer injector 10 and mixed fertile tank 5 in parallel are communicated with successively, consist of closed fertilizer mixing pipeline.Fertilizing pump 20 also is connected with fertilising pressure-regulating device 22, and is communicated with successively mixed fertile control magnetic valve 23, flowmeter 25 and irrigated area control magnetic valve 26, consists of fertilizing pipeline.The return line of fertilising pressure-regulating device 22 is connected to mixed fertile tank 5; Minimum liquid level gauge tap, the highest liquid level control switch and mixed fertile tank liquid level detection device 4 are installed in the mixed fertile tank 5.The output signal of EC value sensor 17, pH value sensor 18, mixed fertile tank liquid level detection device 4 and flowmeter 25 is connected respectively to intelligent controller 9, to detect nutrient solution EC value, pH value, mixed fertile tank liquid level and irrigation/fertilising flow; Inhale to arrange on the fertile speed indicator 11 and inhale fertile state monitoring apparatus 15, the output signal of inhaling fertile state monitoring apparatus 15 is connected to intelligent controller 9, with the fertile state of the suction of monitoring each injection tube road; Fertilising is controlled magnetic valve 2, mixed fertile control magnetic valve 23, irrigation control magnetic valve 24, irrigated area control magnetic valve 26, the fertile control of suction magnetic valve 16, supply-water pump 6 and fertilizing pump 20 and all is connected to the electric control system (not shown), controls it by electric control system under the instruction of intelligent controller 9 to open/close or open/stop.
When fertilising control magnetic valve 2 with mixed fertile control magnetic valve 23 cuts out, irrigation control magnetic valve 24 is opened, supply-water pump 6 starts when supplying water, can control magnetic valve 26 opened irrigated areas to the irrigated area and irrigate; Control magnetic valve 2 is opened, irrigation control magnetic valve 24 cuts out when applying fertilizer, supply-water pump 6 starts when supplying water, can be to water filling in the mixed fertile tank 5; When mixed fertile control magnetic valve 23 cuts out, when fertilizing pump 20 starts, inhales fertile control magnetic valve 16 and opens, can in mixed fertile tank 5, annotate fertilizer, and can regulate the signal dutyfactor of opening/close of inhaling fertile control magnetic valve 16 by intelligent controller 9 and automatically regulate the fertile speed of inhaling, or inhale fertile speed by 14 pairs of manual modulation valves and carry out manual adjustments; When mixed fertile control magnetic valve 23 is opened, irrigation control magnetic valve 24 cuts out, all inhale fertile control magnetic valves 16 and close, when fertilizing pump 20 starts, can will mix the nutrient solution that has prepared in the fertile tank 5 irrigated area of applying fertilizer and control in the opened irrigated area of magnetic valve 26; When irrigation control magnetic valve 24 close, apply fertilizer control magnetic valve 2 and mixed fertile control magnetic valve 23 is opened, supply-water pump 6 and fertilizing pump 20 all start, inhale fertile when controlling magnetic valve 16 and also opening, simultaneously water filling, annotate fertile and the nutrient solution that the mixes irrigated area of applying fertilizer is controlled in the opened irrigated area of magnetic valve 26, and can regulate the signal dutyfactor of opening/close of inhaling fertile control magnetic valve 16 by intelligent controller 9 and automatically regulate the fertile speed of inhaling, or inhale fertile speed by 14 pairs of manual modulation valves and carry out manual adjustments.
Irrigate pressure-regulating device 1 and loine pressure can be adjusted to a certain setup pressure value with fertilising pressure-regulating device 22, and to keep loine pressure when changing substantially constant when irrigated area control, thereby keep constant drip irrigation speed and inhale fertile speed, the size that flow and irrigation/fertilising zone were irrigated/applied fertilizer in assurance is approximated to direct ratio, and fertilizer-sucting quantity is approximated to direct ratio with the fertile time of suction.
Inhale fertile speed indicator 11 with status signal output function or carrier state signal output function not, there is not the fertile speed indicator 1 of suction of status signal output function can adopt glass rotameter, can automatically detect the fertile state monitoring apparatus 15 of the suction of inhaling fertile speed indicator 11 state variation in fertile speed indicator 1 configuration of the suction that does not have the status signal output function, this inhales fertile state monitoring apparatus 15 can adopt photoelectric sensor, optoelectronic switch or conductivity detector.Can adopt flow sensor or flow instrumentation with the fertile speed indicator 11 of the suction of status signal output function, at this moment, inhale fertile speed indicator 11 and itself just have the State-output function, no longer need to inhale fertile state monitoring apparatus 15.
Such as Fig. 2 and shown in Figure 1, the status monitoring of irrigating the course of work is mainly undertaken by flowmeter 25.According to the Set For Current state of irrigated area control, can know current irrigated area and size thereof, thereby extrapolate the theoretical flow of irrigating.Intelligent controller 9 detects the actual irrigation flow by flowmeter 25, irrigating flow with theory and compare, if difference has surpassed predetermined limits, then must be that fault has appearred in a certain link in water supply installation or irrigation/fertilising control device, carry out immediately emergent management, and provide alarm; If within predetermined limits, then thinking, difference irrigates course of work normal operation, the accumulative total irrigation volume.If irrigation volume is enough, then stop to irrigate; Otherwise, continue to irrigate.
Such as Fig. 3 and shown in Figure 1, the status monitoring of automatic irrigation fertilizer applicator fertilising course of work water supply link mainly relies on mixed fertile tank liquid level detection device 4 to realize.At first inquire about current fertilising duty, if only water filling is not applied fertilizer, then mixed fertile tank liquid level should rise, and intelligent controller 9 detects mixed fertile tank actual liquid level by mixed fertile tank liquid level detection device 4, and compares with the liquid level testing result of last time, draw the actual change trend of mixed fertile tank liquid level, if liquid level rises, represent that then the water supply link is normal, otherwise expression is broken down, carry out immediately emergent management, and provide alarm; If marginal not waterside fertilising, then can extrapolate the theoretical variation tendency of blending tank liquid level by normal water supply flow and theoretical fertilising flow, intelligent controller 9 detects mixed fertile tank actual liquid level by mixed fertile tank liquid level detection device 4 and calculates the actual change trend of mixed fertile tank liquid level, if conform to theoretical variation tendency, represent that then the water supply link is normal, otherwise expression is broken down.
As shown in Figure 1 and Figure 4, the automatic irrigation fertilizer applicator fertilising course of work status monitoring of inhaling fertile link mainly relies on and inhales fertile state monitoring apparatus 15 and realize.Inhale fertile speed indicator 11 and can adopt glass rotameter, inhale fertile state monitoring apparatus 15 and can adopt photoelectric sensor or conductivity detector.When inhaling fertilizer, the fertilizer mother liquor is sucked fertilizer mixing pipeline through the injection tube road by venturi fertilizer injector 10, the fertile speed indicator 11(of corresponding suction glass rotameter) float will float, thereby cause the variation of light transmittance or electrical conductivity, the signal that outputs to intelligent controller 9 of inhaling fertile state monitoring apparatus 15 will change then.If comprise a certain fertilizer component in the ratio of nutrient solution, and corresponding inhale fertile state monitoring apparatus 15 and do not detect state variation, then must be that this road is inhaled fertile or inhaled fertile status monitoring link and fault occurred.
Such as Fig. 5 and shown in Figure 1, the status monitoring of automatic irrigation fertilizer applicator fertilising course of work compounding link mainly relies on EC value sensor 17 and pH value sensor 18 to realize.In mixed fertile process, the intelligent controller 9 constantly EC value by EC value sensor 17 and 18 pairs of nutrient solutions of pH value sensor/pH value detects in real time, and compares with setting value.If nutrient solution EC value/pH value measured value is within the allowed band of setting value, then control fertilising control magnetic valve 2 and mixed fertile control magnetic valve 23 are opened, irrigation control magnetic valve 24 cuts out, supply-water pump 6 and fertilizing pump 20 start, apply fertilizer to irrigated area control magnetic valve 26 opened irrigated areas, and open/close dutycycle according to what the difference between nutrient solution EC value/pH value measured value and the setting value regulated that each road inhales fertile control magnetic valve 16, inhale fertile speed thereby regulate, make nutrient solution EC value/pH value closer to setting value.If nutrient solution EC value/pH value measured value is higher than the allowed band of setting value, then mixed fertile tank liquid level is detected, if liquid level in the middle of being lower than, then control fertilising control magnetic valve 2 is opened, mixed fertile control magnetic valve 23 and irrigation control magnetic valve 24 are closed, supply-water pump 6 and fertilizing pump 20 start, to mixing simultaneously water filling and notes fertilizer in the fertile tank 5, but do not apply fertilizer to the irrigated area, and open/close dutycycle according to what the difference between nutrient solution EC value/pH value measured value and the setting value regulated that each road inhales fertile control magnetic valve 16, inhale fertile speed thereby regulate, make nutrient solution EC value/pH value trend towards fast setting value; If liquid level in the middle of being higher than, then control fertilising control magnetic valve 2 is opened, and mixed fertile control magnetic valve 23, irrigation control magnetic valve 24 and Ge Lu inhale fertile control magnetic valve 16 and close simultaneously, supply-water pump 6 and fertilizing pump 20 start, water filling, mixed fertile in the mixed fertile tank 5, but do not annotate fertilizer, do not apply fertilizer to the irrigated area yet.If nutrient solution EC value/pH value measured value is lower than the allowed band of setting value, then mixed fertile tank liquid level is detected, if liquid level in the middle of being lower than, then control fertilising control magnetic valve 2 is opened, mixed fertile control magnetic valve 23 and irrigation control magnetic valve 24 are closed, supply-water pump 6 and fertilizing pump 20 start, to mixing simultaneously water filling and notes fertilizer in the fertile tank 5, but do not apply fertilizer to the irrigated area, and open/close dutycycle according to what the difference between nutrient solution EC value/pH value measured value and the setting value regulated that each road inhales fertile control magnetic valve 16, inhale fertile speed thereby regulate, make nutrient solution EC value/pH value trend towards fast setting value; If liquid level in the middle of being higher than, then control fertilising control magnetic valve 2, mixed fertile control magnetic valve 23, irrigation control magnetic valve 24 are closed, supply-water pump 6 stalls, fertilizing pump 20 starts, and annotates fertilizer, mixed fertile in mixed fertile tank 5, but not water filling, do not apply fertilizer to the irrigated area yet, and open/close dutycycle according to what the difference between nutrient solution EC value/pH value measured value and the setting value regulated that each road inhales fertile control magnetic valve 16, and inhale fertile speed thereby regulate, make nutrient solution EC value/pH value trend towards fast setting value.
Working properly for guaranteeing EC value sensor 17 and pH value sensor 18, two-way EC value sensor and two-way pH value sensor (not shown in figure 1) can be set respectively concurrently, and the testing result of two-way sensor compared, if difference has surpassed tolerance limit, then think sensor fault (not shown among Fig. 5) has taken place, carry out emergent management immediately, and provide alarm.
The liquid level protection of mixed fertile tank 5 is main to be realized by mixed fertile tank liquid level detection device 4, mixed fertile tank minimum liquid level gauge tap and the highest liquid level control switch (not shown in figure 1) of mixed fertile tank.When mixed fertile tank liquid level is lower than minimum liquid level, mixed fertile tank minimum liquid level gauge tap action, the control loop of cut-out fertilizing pump 20 makes fertilizing pump 20 force stalls, and sends alarm signal by auxiliary contact and intermediate circuit to intelligent controller 9; When mixed fertile tank liquid level was higher than the highest liquid level, the control loop of supply-water pump 6 was cut off in the highest liquid level control switch action of mixed fertile tank, makes supply-water pump 6 force stalls, and sends alarm signal by auxiliary contact and intermediate circuit to intelligent controller 9.Mixed fertile tank liquid level detection device 4 also mixes the monitoring of fertile tank liquid level simultaneously, if the testing result of mixed fertile tank liquid level detection device 4 and mixed fertile tank minimum liquid level gauge tap and mixed fertile the tank state of high liquid level control switch are not inconsistent (not shown among Fig. 3 and Fig. 5), then must be that fault has taken place a certain link during minimum liquid level control, the control of the highest liquid level or liquid level detect.
Such as Fig. 6 and shown in Figure 1, the status monitoring of automatic irrigation fertilizer applicator fertilising course of work fertilising link mainly relies on flowmeter 25 to realize.According to the Set For Current state of irrigated area control, can know current fertilising zone and big or small, thereby extrapolate theoretical fertilising flow.Detecting actual fertilising flow by flowmeter 25, compare with theory fertilising flow, if difference has surpassed predetermined limits, then must be that fault has appearred in the fertilising link, carries out emergent management immediately, and provides alarm; Link is working properly if difference within predetermined limits, is then thought fertilising.
As shown in Figure 7, water supply link that the status monitoring of the automatic irrigation fertilizer distributor fertilising course of work is integrated, inhale the status monitoring of fertile link, nutrient solution preparation link and fertilising link.At each status monitoring in the cycle, at first successively to the water supply link, inhale fertile link, compounding link and fertilising link and carry out state-detection, if the fault of detecting is then carried out immediately emergent management, and provided alarm; If all are normal, then think to add up dose by fertilising course of work normal operation.If dose is enough, then stop fertilising; Otherwise, continue fertilising.
Should be noted that at last, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although the present invention is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement technical scheme of the present invention, and not breaking away from the spirit and scope of technical solution of the present invention, it all should be encompassed within the claim scope of the present invention.
Claims (3)
1. automatic irrigation fertilizer distributor apparatus for monitoring working state, the automatic irrigation fertilizer distributor includes supply channel, irrigation pipeline, injection tube road, fertilizer mixing pipeline, fertilizing pipeline, electric control system and intelligent controller, it is characterized in that: described supply channel comprises supply-water pump (6), fertilising control magnetic valve (2) and mixes fertile jar (5) and is communicated with successively; Described irrigation pipeline comprises that irrigating pressure-regulating device (1), irrigation control magnetic valve (24), flowmeter (25) and irrigated area control magnetic valve (26) is communicated with successively; Described injection tube road comprises that fertilizer tank (12), suction fertile speed indicating device (11), suction fertile control magnetic valve (16) and venturi fertilizer injector (10) are communicated with successively; Described fertilizer mixing pipeline comprises that fertilizing pump (20), EC value sensor (17) and pH value sensor (18), venturi fertilizer injector (10) and mixed fertile jar (5) in parallel are communicated with formation successively; Described fertilizing pipeline is connected with fertilising pressure-regulating device (22) by fertilizing pump (20) and is communicated with mixed fertile control magnetic valve (23), flowmeter (25) and irrigated area control magnetic valve (26) successively and constitutes; The return line of fertilising pressure-regulating device (22) connects mixed fertile jar (5); Mix to be provided with in fertile jar (5) and mix fertile jar liquid level detection device (4); The output signal of EC value sensor (17), pH value sensor (18), mixed fertile jar liquid level detection device (4) and flowmeter (25) is connected intelligent controller (9) respectively; Magnetic valve (26) is controlled in described fertilising control magnetic valve (2), mixed fertilizer control magnetic valve (23), irrigation control magnetic valve (24), irrigated area, fertile magnetic valve (16), supply-water pump (6) and the fertilizing pump (20) controlled of suction is connected respectively to electric control system, and electric control system connects intelligent controller (9).
2. automatic irrigation fertilizer distributor apparatus for monitoring working state according to claim 1, it is characterized in that: inhale fertile speed indicating device (11) and be provided with suction fertile state monitoring apparatus (15), the output signal of inhaling fertile state monitoring apparatus (15) connects intelligent controller (9); Inhale fertile state monitoring apparatus (15) and adopt photoelectric sensor, optoelectronic switch or electrical conductivity checkout gear.
3. automatic irrigation fertilizer distributor work state monitoring method is characterized in that having following steps:
1) status monitoring of the irrigation course of work: intelligent controller (9) detects the actual irrigation flow by flowmeter (25), irrigates flow with theory and compares, and operation is normal if difference within predetermined limits, is then irrigated the course of work;
2) status monitoring of fertilising course of work water supply: at first inquire about current fertilising duty, if only water filling is not applied fertilizer, intelligent controller (9) detects mixed fertile tank actual liquid level by mixed fertile tank liquid level detection device (4), compare with the liquid level testing result of last time, draw the actual change trend of mixed fertile tank liquid level, then supply water normally if liquid level rises; If the fertilising of marginal not waterside mixes the actual change trend that fertile tank actual liquid level also calculates mixed fertile tank liquid level by mixed fertile tank liquid level detection device (4) detection, if conform to then water supply normally with theoretical variation tendency;
3) the fertilising course of work is inhaled fertile status monitoring: fertilizer is sucked fertilizer mixing pipeline through the injection tube road by venturi fertilizer injector (10), the float of the fertile speed indicating device of corresponding suction (11) floats, inhaling the signal that fertile state monitoring apparatus (15) outputs to intelligent controller (9) changes, if comprise a certain fertilizer component in the ratio of nutrient solution, and the corresponding fertile state monitoring apparatus (15) of inhaling does not detect state variation, then is that this road is inhaled fertile or inhaled fertile status monitoring fault is arranged;
4) status monitoring of fertilising course of work compounding: intelligent controller (9) detects the EC value of nutrient solution/pH value in real time by EC value sensor (17) and pH value sensor (18), and compare with setting value, intelligent controller (9) according to the fiducial value of measured value and setting value regulate inhale fertile control magnetic valve (16) open/close dutycycle to regulate the fertile speed of inhaling;
5) status monitoring of fertilising course of work fertilising: intelligent controller (9) detects actual fertilising flow and the theory flow that applies fertilizer by flowmeter (25) and compares, and within predetermined limits, the link of then applying fertilizer is working properly as if difference;
6) status monitoring of the fertilising course of work: carry out state-detection to supplying water, inhale fertilizer, compounding and fertilising at first successively, if all are normal, the course of work of then applying fertilizer normal operation, accumulative total dose.
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| CN201010586460A CN102090288B (en) | 2010-12-14 | 2010-12-14 | Device and method for monitoring working condition of automatic irrigation fertilizer distributor |
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| CN201010586460A CN102090288B (en) | 2010-12-14 | 2010-12-14 | Device and method for monitoring working condition of automatic irrigation fertilizer distributor |
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| US20130073097A1 (en) * | 2011-09-19 | 2013-03-21 | Dennis Vidovich | Area soil moisture and fertilization sensor |
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