CN202159029U - Sand soil moisture dynamic monitor - Google Patents

Abstract

The utility model relates to a sand soil moisture dynamic monitor. An accumulator jar and a charger are arranged in a principal machine; a display, a charging lamp, a charging switch, a 232 port, a memory card, a operating button, a principal machine switch and an operation indicating lamp are arranged on a front panel of the principal machine; a multi-path connector assembly, an accumulator jar jack and single-chip microcomputer control boards are arranged on a rear panel of the principal machine; the single-chip microcomputer control boards are respectively communicated with the principal machine switch; an accumulator cell is communicated with the single-chip microcomputer control boards; the multi-path connector assembly is communicated with a probe sheathed wire; the probe sheathed wire is provided with a moisture humidity sensing probe and a moisture transmitter and connected with a multi-path signal wire plugged into the multi-path connector assembly; and the 232 port is connected with a notebook computer through a USB converting 232 wire. The sand soil moisture movement monitor adopts a solar silicon cell to supply power to the accumulator cell, can be normally operated in the wild where alternating current does not exist, and improves the reliability and the interference immunity. The monitor has a plurality of paths, small volume and high intellectualization, is simple to operate, and improves the operating efficiency and the measurement accuracy. The monitor can be applicable to the moisture variation observation at sands easy to be dried, main root mass zones, green areas and gardens where irrigation facilities do not exit, and the like.

Description

Sand ground moisture dynamic monitor

Technical field

The utility model relates to a kind of instrument of monitoring the sand ground water cut.

Background technology

The sand ground water cut is closely related with become work and the growth of plant, is one of important sand ground characteristic index.When measuring the sand ground water cut, adopt traditional earth boring auger to supply dry method more.Because sand ground is dry, quality is complicated, and very difficulty fetches earth; Cause workload big, the time is long, takes in the process of husky appearance in addition; The measuring point change, the error at measurment that sand ground moisture Spatial Variability is brought can not satisfy the requirement that open-air fixed point METHOD FOR CONTINUOUS DETERMINATION sand ground moisture dynamic changes.Secondly, because desert and sand ground quality complex structure, as more observation station is carried out synchronous Continuous Observation, if adopt soil drilling method to measure, the moisture structure that records like this will have very big distortion or make data processing complex.

Summary of the invention

In order to grasp sand ground moisture dynamic change procedure better, the purpose of the utility model is to provide a kind of sand ground moisture dynamic monitor.

The purpose of the utility model is to realize through following technical scheme:

A kind of sand ground moisture dynamic monitor is by the wet probe of moisture sense, probe RVV, moisture transmitter) and main frame form.The front panel that main frame is built-in with accumulator jar, charger, main frame is provided with display, rechargeable lamp, charge switch, 232 mouthfuls, storage card, action button, host switch, relay indicating light; The main frame rear panel is provided with multiple-connector seat and singlechip control panel.Singlechip control panel is communicated with host switch, display, storage card, action button, relay indicating light and accumulator respectively; Accumulator is communicated with charger and silicon solar assembled battery respectively through rechargeable lamp, charge switch; The probe RVV is equipped with wet probe of moisture sense and moisture transmitter; Between wet probe of moisture sense and two-sided copper coin carbon brush for electric machine is arranged; Between carbon brush for electric machine and probe connecting line connection welding is arranged, and with the resin parcel, the probe connecting line is communicated with the multiple-connector seat through the multiple signals line; 232 mouthfuls are changeed 232 lines through USB and are connected with notebook computer.

The advantage of the utility model and the beneficial effect of generation are:

1, the utility model has adopted advanced microcomputer single-chip microcomputer; COMS integrated digital circuit technology; Utilize computing machine with data storing, processing, calculating, demonstration, also adopted silicon solar cell to storage battery power supply; Having solved under the situation of open-air no alternating current also can operate as normal, makes instrument reliability, and anti-interference is improved.This instrument way is many, and volume is little, and is intelligent strong; Simple to operate; Continuous acquisition sand ground moisture only needs a people accomplish whole surveying works, need not the observation personnel and just can put function according to the order of sequence at the scene and gather automatically, helps quickening the accumulative process of sand ground hydrological data; Can obtain the slight change of sand ground moisture; Do not have the serious wet phenomenon that stagnates, be convenient to the sand ground moisture movement, infiltrate phenomenon Study such as the peak face moves, for the scientific research personnel provides a large amount of, observational data accurately; Shorten the experimental study cycle of scientific research personnel greatly to some problems, can make the researchist in the short as far as possible time with minimum human and material resources obtain faster, scientific payoffs preferably.

2, the utility model has been selected for use by a pair of carbon brush bare electrode and has been done the wet probe of sense, and it has not oxidation, the wet phenomenon of never degenerating, stagnate is little, characteristics such as sensitivity height.

3, the utility model power supply is supplied power to maintenance-free battery through silicon solar.Non-maintaining accumulator jar characteristics are: 1, inner no working fluid, any orientation are placed does not all influence the instrument use; 2, need not moisturizing between the whole operating period and mend maintenance works such as acid, the storage battery clean in appearance can not be made moist; 3, the gas that is produced in the charging process can be absorbed by special negative pole, need not worry corrosion and pollution to instrument and equipment; 4, long service life, capacity is big, has extremely low inside self-discharge characteristics, can provide stable heavy-current discharge voltage.More can demonstrate its superiority when cooperating with silicon solar cell it is thus clear that accumulator jar all has good performance, both combine just can constitute the supply unit that is fit to open-air usefulness.

Description of drawings

Fig. 1 is the utility model main frame rear panel synoptic diagram.

Fig. 2 is the utility model main frame front panel synoptic diagram.

Embodiment

A kind of sand ground moisture dynamic monitor mainly is made up of the wet probe of moisture sense 1, probe RVV 2, moisture transmitter 25 and main frame 26.The front panel 13 that main frame 26 is built-in with accumulator jar 11, charger 12, main frame is provided with display 14, rechargeable lamp 15,16,232 mouthful 17 of charge switch, storage card 18, action button 19, host switch 20, relay indicating light 21; Main frame rear panel 10 is provided with multiple-connector seat 9 and singlechip control panel 22.Singlechip control panel 22 is communicated with host switch 20, display 14, storage card 18, action button 19, relay indicating light 21 and accumulator 11 respectively; Accumulator 11 is communicated with charger 12 and silicon solar assembled battery 27 respectively through rechargeable lamp 15, charge switch 16; Probe RVV 2 is equipped with wet probe 1 of moisture sense and moisture transmitter 25; Wet probe 1 of moisture sense and 4 of two-sided copper coins have carbon brush for electric machine 3; Carbon brush for electric machine 3 and 6 of connecting lines of probe have connection welding 5, and with resin 7 parcels, probe connecting line 6 is communicated with multiple-connector seat 9 through multiple signals line 8; Changeing 232 lines 24 through USB for 232 mouthful 17 is connected with notebook computer 23.

Following with regard to multichannel sand ground moisture measurement division below:

One, electric supply installation

Instrument is arranged on the field inspection scene; Usually can only use powered by direct current; Instrument is worked in the open air stably in a long term; Select suitable supply unit just to seem very important, a stable power device must be arranged, the utility model adopts the silicon solar assembled battery---and non-maintaining miniature hermetically sealed accumulator jar 11 is as electric supply installation.

The load of the utility model is only by accumulator jar 11 supplying electric currents, and along with the continuous current sinking of load, the voltage of accumulator jar 11 reduces gradually; When voltage is reduced to a certain value; Silicon solar assembled battery 27 through charger 12 with little electric current to accumulator jar 11 chargings, and when the capacity of storage battery is sufficient, charger 12 disconnections; It is excessive to prevent like this to charge; Prolong the serviceable life of accumulator jar 11, the voltage that the electric supply installation of this method of work provides is stable, and can too not influence the serviceable life of accumulator jar 11 because of charging.

Two, measuring method

The degree of depth that the wet probe 1 of moisture sense is buried underground is respectively 10cm, 20cm, 40cm, 60cm, 80cm, 100cm, 120cm, 140cm.According to the kind of crop and the sand ground moisture state in field, but moisture sense wet probe 1 vertical distribution or horizontal distribution, at different depth some measuring points of multiselect of trying one's best,

Multiple signals line 8 ends on the stand-down, per 4 the tunnel concentrate on multiple-connector seat 9 of insertion, and the length of multiple signals line 8 is generally 10 meters, the plug of lead is arranged put well, through observing after the certain hour water balance

The multichannel sand ground moisture dynamic monitor of the utility model development; Be based on sand ground and belong to porous material; Water is present in the sand ground space with one or more states in solid, liquid, three kinds of states of gas, and sand ground is a kind of relatively stable matrix, and moisture difference because of energy in sand ground moves; The principle of the measuring instrument of sand ground moisture be according to sand ground moisture what to the substantial connection of sand ground solution conductivity property, the conduction of sand ground solution is similar with Ohm law.Resistivity is the electrical quantity of reflection sand ground water cut, and the sand ground water cut is different, the natural different solubility of each quasi-mineral, and its resistivity is also different.The relation of sand ground water cut and resistivity can be by the following formula qualitative representation:

R＝Km-n

Wherein: the R-resistance value; The m-water cut; The n-calibrating parameters; The K-constant.

By can knowing in the formula, resistance R is only relevant with water percentage m, and along with the minimizing of the increase resistance logarithm of moisture, even change of moisture content is smaller, the variation of resistance R is also very big, through measured resistance value R, just can measure the sand ground water cut more accurately.

The wet probe 1 of moisture sense becomes resistance value through moisture transmitter 25 variable quantity of frequency.Obtain a ac voltage signal on the sample resistance with moisture content change.The output oscillation frequency of alternation is along with the resistance change between the wet probe 1 of moisture sense.Washiness in tested sand ground, the resistance value between the wet probe 1 of moisture sense is just little, and the oscillation frequency of output is just high; Otherwise the moisture in the sand ground is few, and the resistance value between the wet probe 1 of moisture sense is just big, and the oscillation frequency of output is just low.Because water cut is different in the sand ground, the resistance value between the wet probe 1 of moisture sense is also just different, and the frequency of measurement is also just different.After rectification and filtering, the d. c. voltage signal of output 0～5V is given computing machine (80C31).Through Single-chip Controlling, just can draw the sand ground different depth, the value of difference water cut.Being connected to notebook computer 23 operation sand ground moisture dynamic monitors through USB commentaries on classics 232 conversion connecting lines 24 for 232 mouthful 17 reads download, preserves data.

Claims (1)

1. sand ground moisture dynamic monitor; Be made up of the wet probe of moisture sense (1), probe RVV (2), moisture transmitter (25) and main frame (26), the front panel (13) that main frame (26) is built-in with accumulator jar (11), charger (12), main frame (25) is provided with display (14), rechargeable lamp (15), charge switch (16), 232 mouthfuls (17), storage card (18), action button (19), host switch (20), relay indicating light (21); Main frame rear panel (10) is provided with multiple-connector seat (9) and singlechip control panel (22); It is characterized in that singlechip control panel (22) is communicated with host switch (20), display (14), storage card (18), action button (19), relay indicating light (21) and accumulator (11) respectively; Accumulator (11) is communicated with charger (12) and silicon solar assembled battery (27) respectively through rechargeable lamp (15), charge switch (16); Probe RVV (2) is equipped with the wet probe of moisture sense (1) and moisture transmitter (25); Between wet probe of moisture sense (1) and two-sided copper coin (4) carbon brush for electric machine (3) is arranged; Between carbon brush for electric machine (3) and probe connecting line (6) connection welding (5) is arranged; And with resin (7) parcel, probe connecting line (6) is communicated with multiple-connector seat (9) through multiple signals line (8); 232 mouthfuls (17) are changeed 232 lines (24) through USB and are connected with notebook computer (23).

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