CN217212396U

CN217212396U - Portable soil humidity detection device

Info

Publication number: CN217212396U
Application number: CN202220624267.8U
Authority: CN
Inventors: 李振芹
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-03-22
Filing date: 2022-03-22
Publication date: 2022-08-16
Anticipated expiration: 2032-03-22

Abstract

A portable soil humidity detection device comprises a main box body, a soil probe, a handheld handle, a power switch, a probe insulation sleeve and an LED lamp or a digital display screen, wherein a multivibrator circuit is installed in the main box body, the soil probe and the handheld handle are fixedly installed on the main box body, 2 soil probes are arranged and are respectively connected with a pin A and a pin B of the multivibrator circuit, the probe insulation sleeve is integrally compounded on the soil probe, the free ends of the soil probes are respectively exposed out of the probe insulation sleeve to form a detection probe, the power switch and the LED lamp or the digital display screen are respectively arranged on the handheld handle or the main box body, the power switch is connected with the input end of the multivibrator circuit, the LED lamp is connected with the output end, the device can realize fixed-point monitoring of soil humidity in a specific soil depth layer and quantitative detection of soil three-dimensional space humidity and distribution conditions, and perfect technical functions, the application field is expanded, and the soil humidity monitoring precision and the monitoring and detecting efficiency of the soil humidity are improved.

Description

Portable soil humidity detection device

Technical Field

The utility model relates to a soil moisture detection device, concretely relates to two kinds of portable soil moisture detection device.

Background

Soil moisture is the physical quantity that expresses soil moisture content degree, also known as soil moisture content, and soil moisture sensor then is the instrument or the device that detects soil moisture, mainly is applied to soil moisture content and detects and production scientific research fields such as agricultural irrigation and forestry protection. The patent No. 2019213822290 discloses a "multivibration soil moisture monitoring early warning device", the device has adopted the 555 timer multivibration circuit as shown in fig. 1, through insert the soil probe respectively on circuit pin A and B, regard soil resistance as this multivibration circuit's charge and discharge resistance, insert in soil and after input Uin switch on power when the soil probe, the multivibration circuit produces the oscillation, can export a series of pulse signal that is the rectangular wave at output Uout, because this pulse signal's output pulse width (pulse frequency) is directly relevant with soil resistance, therefore can directly judge soil moisture and its change law with the help of its oscillation frequency and change through acquireing this pulse signal, to soil moisture real-time supervision, timely make irrigation early warning. Although the device has the advantages of stable and reliable performance and higher measurement precision, the soil probe is of an overall exposed structure, the technical characteristic determines that the monitoring information can only reflect the highest value of the humidity in the soil in the vertical direction of the monitoring point, but cannot determine the soil layer depth with the monitoring point where the highest value is located as the value and cannot reflect the change rule of the soil humidity in the vertical direction of the monitoring point, so that the application field of the device is only limited to qualitative monitoring and early warning of regional soil humidity and cannot be used for quantitative detection of the three-dimensional space humidity and the distribution condition of the soil humidity.

SUMMERY OF THE UTILITY MODEL

The utility model aims at improving prior art, providing portable soil moisture detection device, realizing the quantitative determination to soil three-dimensional space humidity and distribution situation.

A portable soil moisture detection device comprising: the soil probe comprises a main box body, a soil probe, a handheld handle, a power switch, a probe insulating sleeve and an LED lamp, wherein a multivibrator circuit is installed in the main box body, the soil probe and the handheld handle are respectively and correspondingly and fixedly installed on the main box body, so that an operator can vertically insert the soil probe into soil and pull out the soil probe from the soil by holding the handheld handle, the soil probe is a metal rod body and is totally provided with 2 soil probes, one end of each soil probe is arranged in the main box body and is respectively connected with a pin A and a pin B of the multivibrator circuit, the probe insulating sleeve is integrally compounded on the rod bodies of the 2 soil probes to play an insulating protection role on the rod body of the soil probe, the free ends of the 2 soil probes are respectively exposed outside the probe insulating sleeve and correspond to each other to form a detection probe, the power switch and the LED lamp are respectively arranged on the handheld handle or the main box body, the power switch is connected to an input end Uin of the multivibrator circuit and used for controlling connection or disconnection of a power input circuit of the input end Uin, and the LED lamp is connected to an output end Uout of the multivibrator circuit and used for displaying an output rule of a pulse signal of the output end Uout.

Further, preferably, soil depth scale marks are marked on the surface of the probe insulation sleeve to indicate the depth value of the position of the detection probe relative to the soil ground when the soil probe is vertically inserted into the soil.

Furthermore, preferably, the free ends of the 2 soil probes and the probe insulation sleeve complex are provided with combined sharp ends so as to reduce the frictional resistance when the soil probes are inserted into the soil and improve the convenience of use and operation.

A portable soil moisture detection device comprising: the soil probe comprises a main box body, a soil probe, a handheld handle, a power switch, a probe insulation sleeve and a digital display screen, wherein a multivibrator circuit is installed in the main box body, the soil probe and the handheld handle are respectively and correspondingly fixedly installed on the main box body, the soil probe is a metal rod body and is provided with 2 probes, one end of the soil probe is arranged in the main box body and is respectively connected with a pin A and a pin B of the multivibrator circuit, the probe insulation sleeve is integrally compounded on the rod body of the 2 soil probes, the free ends of the 2 soil probes are respectively exposed out of the probe insulation sleeve and correspondingly form a detection probe, the power switch is arranged on the handheld handle or the main box body and is connected with an input end Uin of the multivibrator circuit to control the connection or disconnection of the input end Uin power input circuit, the digital display screen is arranged on the main box body, and the output end Uout is connected with the output end Uout of the multivibrator circuit and is used for converting the pulse signal output by the output end Uout into a detection numerical value of soil humidity and outputting and displaying the detection numerical value in real time.

Further, preferably, soil depth scale marks are marked on the surface of the probe insulating sleeve.

Further, it is preferable that the free ends of 2 soil probes 12 and the probe insulation cover 15 complex have a combined sharp tip.

The beneficial effects of the utility model are that, two kinds of portable soil moisture detection device technical solution are provided, to the problem that exists among the prior art, through the compound insulating protection structure that sets up of integration on soil probe, the working depth of soil probe test probe in soil has specifically been injectd, and simultaneously, combine the supporting setting of LED lamp or digital display screen respectively, realize the fixed point monitoring to soil moisture in the specific soil depth layer of surveillance area, strengthen the reliability of soil irrigation early warning, or realize the instant quantitative detection to soil three-dimensional space humidity, master the spatial distribution situation of humidity in the soil, improve the accuracy of soil moisture monitoring, technological function has been perfected, the application has been expanded, make the outstanding good character of prior art obtain full play, and adopted portable structural design, still can further improve the extensive of using, Flexibility and the convenience of operation of use improve soil moisture's monitoring and detection efficiency.

Drawings

FIG. 1 is a schematic diagram of a 555 timer multivibrator circuit.

FIG. 2 is a front view of the portable soil moisture detecting device according to embodiment 1.

FIG. 3 is a side view of the portable soil moisture detecting apparatus according to embodiment 1.

FIG. 4 is a front view of the portable soil moisture detecting device according to embodiment 2.

Detailed Description

The technical solution claimed in the present invention is further described below with reference to the following specific embodiments and accompanying drawings.

Example 1

A portable soil moisture detection device, as shown in fig. 1, 2 and 3, is composed of a main box body 10, a soil probe 12, a handheld handle 13, a power switch 14, a probe insulating sleeve 15, an LED lamp 16, a multi-resonant circuit and a storage battery, wherein the multi-resonant circuit and the storage battery are installed in the main box body 10.

The handheld handle 13 is arranged on the upper portion of the main box body 10, and is an integrated injection molding structure body with the main box body 10, the soil probe 12 is a stainless steel rod body, and is fixedly installed on the lower portion of the main box body 10, the upper ends of 2 soil probes 12 are respectively connected with the pin a and the pin B of the multivibrator circuit inside the main box body 10, the lower end of the soil probes extends out of the main box body 10, the probe insulating sleeve 15 is integrally compounded on the rod body outside the main box body 10, the probe insulating sleeve 15 has the function of insulating and protecting the soil probe rod body, and simultaneously has the function of enhancing the structural strength of the

soil probe

12, 2 free ends of the soil probes 12 extending downwards are respectively exposed outside the probe insulating sleeve 15 and correspond to each other to form a detection probe, and depth scale marks are marked on the surface of the probe insulating sleeve 15, the depth value of the position of the detection probe in the soil relative to the soil ground is indicated, the free end of the soil probe 12 and the probe insulating sleeve 15 compound body have a combined sharp end, the power switch 14 is arranged on the handheld handle 13, the power switch and the storage battery are connected in series inside the main box body 10 at the input end Uin of the multivibrator circuit, the storage battery is controlled to be connected with or disconnected from the input end Uin connecting circuit, the LED lamp 16 is arranged on the side surface of the main box body 10, and the LED lamp is connected inside the main box body 10 at the output end Uout of the multivibrator circuit.

The portable soil humidity detection device of the embodiment is used for monitoring and early warning the soil humidity in a target area, according to the soil irrigation depth standard determined by the growth characteristics of crops planted in the target area, an operator holds the hand-held handle 13 to vertically insert the soil probe 12 into the soil at a monitoring point, observes the soil depth scale marks on the probe insulation sleeve 15, positions and maintains the detection probe at the soil depth level determined by the soil irrigation standard, turns on the power switch 14, starts the portable soil humidity detection device, judges the change condition of the soil humidity on the monitoring depth level of the monitoring point in real time by observing the change of the flicker frequency of the LED lamp 16, the higher the flicker frequency is, the smaller the soil resistance is, the higher the soil moisture content can be judged, and when the flicker frequency is lower, the soil resistance is larger, then, the water content of the soil can be judged to be low, irrigation is possibly needed to increase the soil humidity, and the normal growth of agricultural crops is ensured. At this moment, what the scintillation rule of LED lamp 16 reflects is the soil moisture change rule on the monitoring point concrete monitoring depth aspect, compares in the monitoring point soil moisture maximum value change rule that reflects among the prior art that can't confirm the soil depth aspect, has more scientific and accurate guiding meaning to the irrigation early warning of farming.

Use this embodiment a portable soil moisture detection device carries out dynamic detection to soil three-dimensional space humidity distribution situation, on selected target monitoring point, the operator holds handheld handle 13, opens switch 14 and starts a portable soil moisture detection device, inserts soil probe 12 perpendicularly in the soil of target monitoring point department, with the soil depth scale mark on probe insulating sleeve 15 as the scale, place soil probe 12's test probe in proper order on the soil depth level of target monitoring point department, observe and record the scintillation frequency of LED lamp 16 on each soil depth level respectively, draw and form the change curve of scintillation frequency along with the soil depth, directly perceived reaction goes out the change law of soil moisture on the target monitoring point, usually the soil depth that the abrupt change point of change curve corresponds is soil irrigation institute and degree of depth, by repeatedly carrying out the dynamic detection process on a plurality of target monitoring points in the target area, the distribution condition of the soil three-dimensional space humidity in the target area can be known and mastered, so that the agricultural planting production can be better guided.

Example 2

A portable soil humidity detection device is composed of a main box body 10, a soil probe 12, a handheld handle 13, a power switch 14, a probe insulation sleeve 15, a digital display screen 17, a multi-harmonic oscillation circuit and a storage battery, wherein the multi-harmonic oscillation circuit and the storage battery are installed in the main box body 10, and the portable soil humidity detection device is shown in figures 1 and 4.

The handheld handle 13 is arranged at the upper part of the main box body 10 and is an integrated injection molding structure body with the main box body 10, the soil probe 12 is a stainless steel rod body and is fixedly installed at the lower part of the main box body 10, the upper ends of 2 soil probes 12 are respectively connected with a pin A and a pin B of the multivibrator circuit in the main box body 10, the lower ends of the 2 soil probes extend out of the main box body 10, the probe insulating sleeve 15 is integrally compounded on the rod body outside the

main box body

10, 2 free ends of the soil probes 12 extending downwards are respectively exposed out of the probe insulating sleeve 15 and correspond to each other to form a detection probe, depth scale marks are marked on the surface of the probe insulating sleeve 15 to indicate the depth value of the detection probe in the soil relative to the soil ground, and the free ends of the soil probes 12 and the probe insulating sleeve 15 are provided with combined sharp ends, the power switch 14 is arranged on the handheld handle 13, the storage battery is connected with the input end Uin of the multivibrator circuit in series inside the main box body 10, the connection or disconnection between the storage battery and the input end Uin connection circuit is controlled, the digital display screen 17 is arranged on the front face of the main box body 10, the output end Uout of the multivibrator circuit is connected inside the main box body 10, the digital display screen 17 can read the pulse width analog quantity output by the output end Uout of the multivibrator circuit, and converts the pulse width analog quantity into soil humidity digital quantity through necessary data correction and calculation and displays and outputs the soil humidity digital quantity.

Use this embodiment a portable soil moisture detection device can carry out quantitative determination to the soil moisture in the different soil layers of different monitoring points department in the target area, through point-by-point quantitative determination and to the integrated analysis of detected data, both can realize right the fixed point monitoring function of target area soil in specific soil degree of depth layer also can master comprehensively humidity distribution situation in the soil three-dimensional space in the target area perfects technical function, expands application, improves the accuracy of soil moisture monitoring to and the work efficiency of soil moisture monitoring and detection.

Claims

1. A portable soil moisture detection device, comprising: the soil-testing device comprises a main box body (10), a soil probe (12), a handheld handle (13), a power switch (14), a probe insulation sleeve (15) and an LED lamp (16), wherein a multivibrator circuit is installed in the main box body (10), the soil probe (12) and the handheld handle (13) are respectively and fixedly installed on the main box body (10), the soil probe (12) is a metal rod body, 2 multivibrator circuits are arranged, one end of the soil probe is arranged in the main box body (10) and is respectively connected with a pin A and a pin B of the multivibrator circuit, the probe insulation sleeve (15) is respectively and integrally compounded on the rod body of the soil probe (12), 2 free ends of the soil probe (12) are respectively exposed outside the probe insulation sleeve (15) and correspond to each other to form a detection probe, the power switch (14) and the LED lamp (16) are respectively arranged on the handheld handle (13) or the main box body (10), the power switch (14) is connected to an input end Uin of the multivibrator circuit and used for controlling connection or disconnection of an input circuit of the input end Uin, and the LED lamp (16) is connected to an output end Uout of the multivibrator circuit and used for displaying an output rule of a pulse signal of the output end Uout.

2. A portable soil moisture sensing device as defined in claim 1, wherein: and depth scale marks are marked on the surface of the probe insulating sleeve (15).

3. A portable soil moisture sensing device as claimed in claim 1 or 2, wherein: the free ends of the 2 soil probes (12) and the probe insulating sleeve (15) complex are provided with combined sharp ends.

4. A portable soil moisture detection device comprising: the soil-testing device comprises a main box body (10), a soil probe (12), a handheld handle (13), a power switch (14), a probe insulation sleeve (15) and a digital display screen (17), wherein a multivibrator circuit is installed in the main box body (10), the soil probe (12) and the handheld handle (13) are respectively and fixedly installed on the main box body (10), the soil probe (12) is a metal rod body, 2 multivibrator circuits are arranged, one end of the soil probe is arranged in the main box body (10) and is respectively connected with a pin A and a pin B of the multivibrator circuit, the probe insulation sleeve (15) is respectively and integrally compounded on the rod body of the soil probe (12), 2 front ends of the soil probe (12) are respectively exposed outside the probe insulation sleeve (15) and correspond to each other to form a detection probe, the power switch (14) is arranged on the handheld handle (13) or the main box body (10), the digital display screen (17) is arranged on the main box body (10), is connected to the output end Uout of the multi-harmonic oscillation circuit, and is used for converting a pulse signal output by the output end Uout into a detection numerical value of soil humidity and displaying the detection numerical value in real time.

5. A portable soil moisture sensing device as claimed in claim 4, wherein: and depth scale marks are marked on the surface of the probe insulating sleeve (15).

6. A portable soil moisture sensing device as claimed in claim 4 or claim 5, wherein: the free ends of the 2 soil probes (12) and the probe insulating sleeve (15) complex are provided with combined sharp ends.