CN203337505U - Dynamic sampler of water potential of farmland - Google Patents

Abstract

The utility model relates to a dynamic sampler of water potential of a farmland. A water potential transmitter, a single chip control panel and a lithium cell accumulator jar charger are arranged inside a host computer; a display, a charging light, a charging switch, a 232 port, an operating button and host switches are arranged on a front panel of the host computer; a plurality of paths of connector assemblies are arranged on a rear panel of the host computer; the single chip control panel in the host computer is respectively communicated with the host switches; a storage cell is communicated with the single chip control panel; the plurality of paths of connector assemblies are communicated with a probe sheath line; a moisture humidity probe and a moisture transmitter are arranged on the probe sheath line; the probe sheath line is connected with a plurality of paths of signal lines inserted into the plurality of paths of connector assemblies; the 232 port is connected with a notebook computer through a universal serial bus (USB) to a 232 line. According to the dynamic sampler, a lithium cell accumulator jar is powered by using a solar silicon cell, so that the dynamic sampler also can normally work under the field situation without alternating current. The dynamic sampler is large in number of paths, and strong in intelligence, and can be suitable for observing and monitoring moisture change of the farmlands, taproot groups, grasslands and orchards without irrigation facilities.

Description

Agricultural land soil flow of water dynamic collecting instrument

Technical field

The utility model relates to a kind of instrument of monitoring farmland multichannel soil water potential.

Background technology

Agricultural land soil flow of water water cut and the holard flow and to plant survive and growth is closely related, be one of important soil characteristic index.When measuring the soil water potential water cut, adopt traditional earth boring auger for dry method more.Owing to measuring soil texture complexity, fetch earth very difficult, cause workload large, time is long, takes in the process of husky sample the measuring point change in addition, the error at measurment that spatial variability of soil water brings, can not meet the requirement of field fixed point METHOD FOR CONTINUOUS DETERMINATION agricultural land soil flow of water dynamic change.Secondly, because farmland is large with soil drilling method destruction field-crop area, as the observation station to more is carried out synchronous Continuous Observation, if adopt soil drilling method to be measured, the moisture structure recorded like this will have very large distortion or make data processing complex.

Summary of the invention

In order to grasp better the agricultural land soil flow of water, moisture dynamic changing process, the purpose of this utility model is to provide a kind of agricultural land soil flow of water dynamic monitor.

The purpose of this utility model is to be achieved through the following technical solutions:

A kind of agricultural land soil flow of water dynamic collecting instrument, mainly by flow of water sense wet probe, flow of water pressure conduction plastic flexible pipe, add water tube hose, collection chamber, 2# rubber plug and 1# rubber plug, air chamber sealing cap, negative pressure is conducted air induction hose, air discharge cook, pressure transducer, 4 core signal wires and single-chip microcomputer Acquisition Instrument main frame and is formed.The wet probe of flow of water sense connects and adds water tube hose and flow of water pressure conduction plastic flexible pipe respectively, adds the water tube hose end and is plugged with the 2# rubber plug, and flow of water pressure conduction plastic flexible pipe connects collection chamber, and collection chamber is plugged with the 1# rubber plug, and the air chamber sealing cap screws collection chamber; Collection chamber and negative pressure conduction air induction hose are by air discharge cook Bonding pressure sensor, the multiple-connector seat that pressure transducer is provided with rear panel by 4 core signal wires is connected single-chip microcomputer Acquisition Instrument main frame, single-chip microcomputer Acquisition Instrument main frame is built-in with flow of water transmitter, singlechip control panel and hermetically sealed lithium battery, and single-chip microcomputer Acquisition Instrument main frame front panel is provided with liquid crystal display, host switch, 232 mouthfuls and solar charging electric switch; In single-chip microcomputer Acquisition Instrument main frame, singlechip control panel is communicated with host switch, and hermetically sealed lithium battery is communicated with singlechip control panel, and solar cell is connected with hermetically sealed lithium battery, by the solar charging electric switch, is controlled; Single-chip microcomputer Acquisition Instrument main frame is communicated with singlechip control panel by power lead, and 232 mouthfuls turn 232 lines by USB and are connected with notebook computer.

The wet probe of above-mentioned flow of water sense is that the porous clay cup head is arranged, with flow of water pressure conduction plastic flexible pipe, add water tube hose, collection chamber conducts air induction hose and is connected and combines with resin with negative pressure.

The beneficial effect of advantage of the present utility model and generation is:

1, the utility model has adopted advanced microcomputer single-chip microcomputer, COMS integrated digital circuit technology, utilize single-chip microcomputer by data storing, processing, calculating, demonstration, also adopted silicon solar cell to storage battery power supply, solved field without also working in the situation of alternating current, make instrument reliability, anti-interference is improved.This instrument way is many, volume is little, intelligent strong, simple to operate, the continuous acquisition Sandyland Soil Moisture only needs a people to complete whole surveying works, just can put according to the order of sequence function at the scene without the observation personnel and automatically gather, and has 2, the utility model selected flow of water pressure conduction plastic flexible pipe, added water tube hose, collection chamber, easily degasification, be convenient for changing the water in vitrified-clay pipe, flexible pipe is buried underground and can be observed away from measuring point, avoided water to be beneficial to soon and to accelerate the agricultural land soil flow of water along the hard tube wall, the accumulative process of hydrological data, can obtain the slight change of Farmland Water, there is no serious stagnant wet phenomenon, be convenient to Water movement of farmland, infiltrate the research of the phenomenons such as the peak face moves, the more important thing is that it can need the regimen condition by real-time dynamic monitoring farmland crops, for agriculture personnel provide a large amount of, observe accurately the crop water data, greatly shorten and alleviate the experimental study cycle of agriculture personnel to some problems, can make the researchist within the short as far as possible time with minimum manpower, material resources obtain faster, scientific payoffs preferably, make the high yield of economizing on water that arrives of crops.

Speed enters to blend the impact of artificial destruction measuring point environment; Adopt vitrified-clay pipe it there is not oxidation, never degenerate, stagnant wet phenomenon is little, the characteristics such as sensitivity height.Be embedded in for a long time in soil, inwall does not need to dig out capable of washing if any dirt; Easy to use, adjustable point location METHOD FOR CONTINUOUS DETERMINATION, can be used as and extract soil liquid gauge head, for irrigation, plant growth provide necessary science data.

3, the utility model power supply is powered to maintenance-free battery by silicon solar.Non-maintaining accumulator jar characteristics are: I, inner without working fluid, and place in any orientation does not all affect the instrument use; II, mend the maintenance work such as acid between the whole operating period without moisturizing, the storage battery clean in appearance can not be made moist; The gas produced in III, charging process can be absorbed by special negative pole, need not worry corrosion and pollution to instrument and equipment; IV, long service life, capacity is large, has extremely low inside self-discharge characteristics, can provide stable heavy-current discharge voltage.More can demonstrate its superiority when visible accumulator jar all has good performance and coordinates with silicon solar cell, both combine just can form and are applicable to the supply unit that field is used.

4, the utility model is found out the relational expression of soil moisture content and holard tension force according to field data, there is this relational expression just can learn at any time corresponding soil moisture content according to the holard tension force of observation, the holard tension force index obtained according to test just can instruct field irrigation, during the condition license, also can automatically control irrigation according to holard tension force index.For plant growth provides necessary science data.

The accompanying drawing explanation

Fig. 1 is the utility model schematic diagram.

Embodiment

A kind of agricultural land soil flow of water dynamic collecting instrument, mainly by the wet probe 1 of flow of water sense, flow of water pressure conduction plastic flexible pipe 2, add water tube hose 3, collection chamber 4, 2# rubber plug 11 and 1# rubber plug 6, air chamber sealing cap 5, negative pressure conduction air induction hose 7, air discharge cook 8, pressure transducer 9, 4 core signal wires 10 and single-chip microcomputer Acquisition Instrument main frame 12 form, it is characterized in that the wet probe 1 of flow of water sense connects and adds water tube hose 3 and flow of water pressure conduction plastic flexible pipe 2 respectively, add water tube hose 3 ends and be plugged with 2# rubber plug 11, flow of water pressure conduction plastic flexible pipe 2 connects collection chamber 4, collection chamber 4 is plugged with the 1# rubber plug, air chamber sealing cap 5 screws collection chamber 4, make the wet probe 1 of flow of water sense can automatically rise to collection chamber 4 with the gas of flow of water pressure conduction plastic flexible pipe 2 interior generations.Collection chamber 4 passes through air discharge cook 8 Bonding pressure sensors 9 with negative pressure conduction air induction hose 7, the multiple-connector seat 22 that pressure transducer 9 is provided with rear panel 21 by 4 core signal wires 10 is connected single-chip microcomputer Acquisition Instrument main frame 12, single-chip microcomputer Acquisition Instrument main frame 12 is built-in with flow of water transmitter 13, singlechip control panel 14 and hermetically sealed lithium battery 24, and single-chip microcomputer Acquisition Instrument main frame 12 front panels 15 are provided with liquid crystal display 16,17,232 mouthful 18 of host switch, solar charging electric switch 19; The interior singlechip control panel 14 of single-chip microcomputer Acquisition Instrument main frame 12 is communicated with host switch 17 respectively, and hermetically sealed lithium battery 24 is communicated with singlechip control panel 14, and solar cell 23 is connected with hermetically sealed lithium battery 24, by solar charging electric switch 19, is controlled; Single-chip microcomputer Acquisition Instrument main frame is communicated with singlechip control panel 14 by power lead 20, and 232 mouthful 18 turns 232 lines 25 by USB and be connected with notebook computer 26.

The wet probe of soil water potential sense 1 degree of depth of burying underground is respectively 10cm, 20cm, 40cm, 60cm, 80cm, 100cm, 120cm, 140cm.According to the kind of crop and the crops root system degree of depth and the Farmland Water state in field, but flow of water sense wet probe 1 vertical distribution or horizontal distribution, at different depth some measuring points of multiselect of trying one's best.

The wet probe of soil water potential sense 1(porous clay cup) be the inductive means of instrument.First collection chamber 4 and the air discharge cook 8 of the junction of negative pressure conduction air induction hose 7 are closed, then add water by filler pipe 3, until flow of water pressure conduction plastic flexible pipe 2 and collection chamber 4 water full after, clog and add water tube hose 3 with 2# rubber plug 11,1# rubber plug 6 clogs collection chamber 4, and screws collection chamber 4 with air chamber sealing cap 5.4 mouthfuls of jam-packs of collection chamber, can not leak gas, and finally opening air discharge cook 8 is that Installation and Debugging are complete again.The wet probe 1 of soil water potential sense is connected with the holard, produces the conducting on waterpower.Convert the d. c. voltage signal of output 0 ~ 5V to single-chip microcomputer (80C31) by the wet probe of soil water potential sense 1 suction value by pressure transducer 9, pass through Single-chip Controlling, by single-chip microcomputer, formula is processed to calculate to inquire into again and water cut, just can draw the sand ground different depth, the value of difference water cut.Turn by USB the instrument that 232 lines 25 are connected to notebook computer 26 operation farmland multichannel tensiometer soil water potentials for 232 mouthful 18, read download, carry out data storage demonstration.When the flow of water in vitrified-clay pipe 1 and the flow of water in soil are unequal, in soil, water is just flowed to flow of water lower by flow of water eminence, until the flow of water balance of two systems.Show that by single-chip microcomputer Acquisition Instrument main frame 12 reading value is exactly soil water potential at that time after balance.By measuring the size of soil water potential absolute value, just meter is calculated soil moisture content more accurately.

Claims (1)

1. an agricultural land soil flow of water dynamic collecting instrument, mainly by the wet probe of flow of water sense (1), flow of water pressure conduction plastic flexible pipe (2), add water tube hose (3), collection chamber (4), 2# rubber plug (11) and 1# rubber plug (6), air chamber sealing cap (5), negative pressure conduction air induction hose (7), air discharge cook (8), pressure transducer (9), 4 core signal wires (10) and single-chip microcomputer Acquisition Instrument main frame (12) form, it is characterized in that the wet probe of flow of water sense (1) connects respectively adds water tube hose (3) and flow of water pressure conduction plastic flexible pipe (2), add water tube hose (3) end and be plugged with 2# rubber plug (11), flow of water pressure conduction plastic flexible pipe (2) connects collection chamber (4), collection chamber (4) is plugged with 1# rubber plug (6), air chamber sealing cap (5) screws collection chamber (4), collection chamber (4) passes through air discharge cook (8) Bonding pressure sensor (9) with negative pressure conduction air induction hose (7), the multiple-connector seat (22) that pressure transducer (9) is provided with rear panel (21) by 4 core signal wires (10) is connected single-chip microcomputer Acquisition Instrument main frame (12), single-chip microcomputer Acquisition Instrument main frame (12) is built-in with flow of water transmitter (13), singlechip control panel (14), hermetically sealed lithium battery (24), single-chip microcomputer Acquisition Instrument main frame (12) front panel (15) is provided with liquid crystal display (16), host switch (17), 232 mouthfuls (18) and solar charging electric switch (19), the interior singlechip control panel of single-chip microcomputer Acquisition Instrument main frame (12) (14) is communicated with host switch (17), hermetically sealed lithium battery (24) is communicated with singlechip control panel (14), solar cell (23) is connected with hermetically sealed lithium battery (24), by solar charging electric switch (19), is controlled, single-chip microcomputer Acquisition Instrument main frame (12) is communicated with singlechip control panel (14) by power lead (20), and 232 mouthfuls (18) turn 232 lines (25) by USB and are connected with notebook computer (26).

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