CN203164155U

CN203164155U - Soil humidity induction device

Info

Publication number: CN203164155U
Application number: CN 201320064026
Authority: CN
Inventors: 潘怀聪
Original assignee: GUANGDONG DAHUA WATER SAVING TECHNOLOGY CO LTD
Current assignee: Guangdong Dahua Water-Saving Technology Co ltd
Priority date: 2013-02-04
Filing date: 2013-02-04
Publication date: 2013-08-28
Anticipated expiration: 2023-02-04

Abstract

The utility model discloses a soil humidity induction device which is used for controlling an irrigation water valve. The soil humidity induction device comprises a power supply, an inductor arranged in a box body and a stainless steel probe, wherein the inductor comprises an oscillating circuit module, a rectifying circuit module, a voltage comparing circuit module and a voltage tracking circuit module which are connected with a power supply; the stainless steel probe is connected with the oscillating circuit module and extends out of the box body; an output end of the oscillating circuit module is connected with the rectifying circuit module; an output end of the rectifying circuit module is respectively connected with the voltage comparing circuit module and the voltage tracking circuit module; and the voltage comparing circuit module is provided with a switching signal output port which is electrically connected with the irrigation water valve. The soil humidity induction device disclosed by the utility model has the advantages of simple structure and convenience in arrangement; and a switching signal is output according to the change of the humidity of the oil on the periphery to control the irrigation water valve to be opened and closed, and the soil humidity induction device is convenient to operate and simple and practical to maintain and operate.

Description

A kind of soil moisture induction installation

Technical field

The utility model relates to a kind of water-saving irrigation equipment, especially relates to the sensing device for monitoring soil moisture.

Background technology

Because global warming has the trend of further aggravation, scope and area that arid disaster takes place progressively enlarge in recent years, and the frequency of generation increases to some extent, causes large tracts of land crop production reduction even total crop failure.Particularly in comparatively backward, the abominable area of natural conditions such as mountain area, hilly country, hydraulic facilities deficiency, electric power basis instrument construction also relatively lag behind, and required irrigation is to be undertaken by the mode of flood irrigation substantially during plantation, and irrigation efficiency is lower.

In order to improve the efficient of irrigation, the mode that water savings such as drip irrigation and spray irrigation are irrigated has appearred.Adopt this mode, need in crop, lay the water pipe network, and at each node variable valve is installed, by monitoring crop soil moisture, open or close the variable valve at respective nodes place, in order to realize the purpose of water-saving irrigation.If adopt manual type regulating and controlling valve, must be by operator's on-site manual switch, maintenance workload is bigger, regulate also untimely, if employing automatic control mode, need to lay the variable valve that a large amount of control signal wires connects each node place, increased equipment cost, the workload of operation maintenance is also bigger

Summary of the invention

The purpose of this utility model provides a kind of soil moisture induction installation timely, simple to operate, that maintenance workload is little of regulating.

Technical solution of the present utility model is: a kind of soil moisture induction installation, be used for the control alfalfa valve, it comprises power supply, be arranged on inductor and stainless steel probe in the box body, wherein inductor comprises the oscillatory circuit module that is connected with power supply, the rectification circuit module, voltage comparator circuit module and voltage-tracing circuit module, the stainless steel probe is connected with the oscillatory circuit module and extends to outside the box body, the output terminal of oscillatory circuit module is connected with the rectification circuit module, the output terminal of rectification circuit module is connected with the voltage-tracing circuit module with the voltage comparator circuit module respectively, and the voltage comparator circuit module is provided with the switching signal output port that is electrically connected with described alfalfa valve.

The stainless steel probe inserts in the soil at node place, alfalfa valve place, the oscillatory circuit module can produce the interchange oscillating voltage, be the power supply of stainless steel probe, when water content changes in the stainless steel probe tips soil, its specific inductive capacity can change, the oscillatory circuit module can be exported corresponding AC signal, the rectification circuit module can be rectified into direct current signal with this AC signal, export to respectively in voltage comparator circuit module and the voltage-tracing circuit module, in the voltage comparator circuit module, compare with setting voltage, according to the size of comparative voltage, can be from switching signal output port output switching signal, the control alfalfa valve opens or cuts out, thereby according to the soil moisture situation at scene, adjust the switch of the alfalfa valve at node place timely, realize adjusting timely, reduce the maintenance workload of manual operation, the convenient use.

Described voltage-tracing circuit module is provided with the voltage signal output end mouth.By voltage signal output end mouth output varying voltage signal, can connect controller, be used for more accurate adjusting operation.

Described box body is provided with the loam cake of flexible connection.Loam cake can be opened, the parts of safeguarding in the box body for convenience detach.

Advantage of the present utility model is: simple in structure, arrange conveniently, and can in time change according to surrounding soil humidity, the open and close of output switching signal control alfalfa valve, easy to operate, maintenance operation is all simple and practical.

Description of drawings

Accompanying drawing 1 is the structural representation of the utility model embodiment;

Accompanying drawing 2 is the circuit logic synoptic diagram of the utility model embodiment;

1, stainless steel probe, 2, the oscillatory circuit module, 3, power supply, 4, the rectification circuit module, 5, voltage comparator circuit module, 6, the switching signal output port, 7, the voltage-tracing circuit module, 8, the voltage signal output end mouth, 9, box body, 10, loam cake, 11, alfalfa valve, 12, controller.

Embodiment

Consult Fig. 1 and Fig. 2, a kind of soil moisture induction installation, be used for control alfalfa valve 11, it comprises power supply 3, be arranged on inductor and stainless steel probe 1 in the box body 9, wherein inductor comprises the oscillatory circuit module 2 that is connected with power supply 3, rectification circuit module 4, voltage comparator circuit module 5 and voltage-tracing circuit module 7, stainless steel probe 1 is connected with oscillatory circuit module 2 and extends to outside the box body 9, the output terminal of oscillatory circuit module 2 is connected with rectification circuit module 4, the output terminal of rectification circuit module 4 is connected with voltage-tracing circuit module 7 with voltage comparator circuit module 5 respectively, and voltage comparator circuit module 5 is provided with the switching signal output port 6 that is electrically connected with alfalfa valve 11.Voltage-tracing circuit module 7 is provided with the voltage signal output end mouth 8 that is connected with controller 12.Box body 9 is provided with the loam cake 10 of flexible connection.

Stainless steel probe 1 inserts in the soil at node place, alfalfa valve 11 place, oscillatory circuit module 2 can produce the interchange oscillating voltage, be 1 power supply of stainless steel probe, when water content changes in the stainless steel probe 1 end soil, its specific inductive capacity can change, the corresponding AC signal of oscillatory circuit module 2 outputs, rectification circuit module 4 is divided into two-way after this AC signal can being rectified into direct current signal, one the tunnel exports in the voltage comparator circuit module 5 and compares with setting voltage, size according to comparative voltage, can be from switching signal output port 6 output switching signals, control alfalfa valve 11 opens or cuts out, and when humidity was high, output signal was closed alfalfa valve 11, when humidity was hanged down, output signal was opened alfalfa valve 11.The output that comes the configuration switch signal according to default comparing voltage value whether.Another road direct current signal of rectification circuit module 4 outputs exports in the voltage-tracing circuit module 7, from the different voltage signal of voltage signal output end mouth 8 outputs, provide controller 12 to use, the convenient electric signal that produces corresponding different humidity in controller 12 is used for carrying out more accurate adjusting.

Each circuit module can use the respective modules of prior art, and whole device simple in structure can realize the control to alfalfa valve 11 open and close at the scene on the spot, reduces the input of wiring, and the manual maintenance amount also alleviates a lot.

Above-listed detailed description is at the specifying of the utility model possible embodiments, and this embodiment is not in order to limiting claim of the present utility model, does not allly break away from the equivalence that the utility model does and implements or change, all should be contained in the claim of this case.

Claims

1. soil moisture induction installation, be used for the control alfalfa valve, it is characterized in that: it comprises power supply, be arranged on inductor and stainless steel probe in the box body, wherein inductor comprises the oscillatory circuit module that is connected with power supply, the rectification circuit module, voltage comparator circuit module and voltage-tracing circuit module, the stainless steel probe is connected with the oscillatory circuit module and extends to outside the box body, the output terminal of oscillatory circuit module is connected with the rectification circuit module, the output terminal of rectification circuit module is connected with the voltage-tracing circuit module with the voltage comparator circuit module respectively, and the voltage comparator circuit module is provided with the switching signal output port that is electrically connected with described alfalfa valve.

2. a kind of soil moisture induction installation according to claim 1, it is characterized in that: described voltage-tracing circuit module is provided with the voltage signal output end mouth.

3. a kind of soil moisture induction installation according to claim 1 and 2, it is characterized in that: described box body is provided with the loam cake of flexible connection.