CN108318659B - Soil humidity detection device - Google Patents
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- CN108318659B CN108318659B CN201810109884.2A CN201810109884A CN108318659B CN 108318659 B CN108318659 B CN 108318659B CN 201810109884 A CN201810109884 A CN 201810109884A CN 108318659 B CN108318659 B CN 108318659B
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Abstract
The invention discloses a soil humidity detection device, which belongs to the technical field of agriculture and comprises a soil drilling unit and a detection unit; the soil drilling unit is used for drilling holes in the soil so as to facilitate the probe in the detection unit to extend into the soil; the detection unit comprises a shell, and a soil humidity sensor, an analog-to-digital converter, a single chip microcomputer, a display screen and a battery which are arranged on the shell. The invention has the advantages of no need of taking soil, direct drilling detection on the soil, convenience and rapidness, capability of detecting soil humidity parameters at different depths, reasonable overall structure arrangement, high measurement precision, reliable performance and capability of better guiding agricultural production.
Description
Technical Field
The invention belongs to the technical field of agriculture, and particularly relates to a soil humidity detection device.
Background
The soil moisture is the soil moisture content, is an important physical parameter of soil, and the soil water is a link connecting surface water and underground water, has an important role in the formation, transformation and consumption processes of water resources, and the soil moisture condition has important significance for rainfall runoff, evapotranspiration, change of an ecological system and the like. Meanwhile, the water content of the soil is also a key index in agricultural production conditions, and the size of the water content of the soil plays a crucial role in the growth of crops. The decomposition and mineralization of organic nutrients in soil can not separate water, chemical fertilizers applied to the soil can be dissolved only in water, nutrient ions migrate to the surface of root systems, and the absorption of crop root systems to nutrients must be realized through water media, so that the effective measurement and control of the water content of the soil are the basis of modern agricultural production.
Soil moisture detection device mainly is used for measuring soil volume water content, does soil moisture content monitoring and agricultural irrigation and forestry protection. At present, the soil moisture measurement methods are various, such as a drying method, a neutron instrument method, soil conductivity measurement and the like; at present, the main method for measuring soil moisture by the agricultural department is a traditional drying method, and some automatic observation instruments are also provided, but the monitoring precision of instruments of various types is uneven, and manual soil taking monitoring cannot be replaced.
Disclosure of Invention
In order to solve the defects of the prior art, the invention provides a soil humidity detection device.
The technical scheme adopted by the invention is as follows: the utility model provides a soil moisture detection device which characterized by: the soil humidity detection device comprises a soil drilling unit and a detection unit;
the soil drilling unit is used for drilling holes in the soil so as to facilitate the probe in the detection unit to extend into the soil; the soil drilling unit comprises a driving pipe, a rotating rod, a driving assembly and a drill bit; the driving pipe drives the rotating rod to rotate through up-and-down reciprocating motion, the driving pipe is a hollow cylindrical pipe, and a spiral groove is formed in the inner wall of the driving pipe; the rotating rod is a hollow cylindrical rod, the length of the rotating rod is greater than that of the driving tube, the outer diameter of the rotating rod is smaller than the inner diameter of the driving tube, the top end of the rotating rod extends into the hollow part of the driving tube, and a plurality of through holes for arranging probes are formed in the position, close to the bottom end, of the rotating rod; the driving assembly is arranged on the rotating rod and is matched with the driving pipe to drive the rotating rod to rotate, and the driving assembly comprises a rotating wheel, a clutch wheel and a blocking piece; the rotating wheel is arranged at the position, close to the top end, of the rotating rod, the rotating wheel can rotate on the rotating rod and can slide up and down on the rotating rod, the side wall of the rotating wheel is provided with a spiral protrusion, the spiral protrusion is matched with a spiral groove in the driving pipe, and the lower surface of the rotating wheel is provided with a ratchet; the clutch wheel controls the rotating wheel to rotate on the rotating rod in a single direction, the clutch wheel is arranged below the rotating wheel and fixed with the rotating rod, and the upper surface of the clutch wheel is provided with a ratchet which is matched with the ratchet on the lower surface of the rotating wheel; the blocking piece is fixedly arranged at the top end of the rotating rod and can block the rotating wheel from coming off the rotating rod; the drill bit is fixedly arranged at the bottom end of the rotating rod;
the detection unit comprises a shell, a soil humidity sensor arranged on the shell, an analog-to-digital converter, a single chip microcomputer, a display screen and a battery, wherein a plurality of probes of the soil humidity sensor are respectively arranged in a plurality of through holes on the rotating rod, the probes are insulated from the rotating rod, each probe comprises a hemispherical head and a separation blade arranged on the plane of the hemispherical head, the hemispherical heads can extend and retract in the through holes and can prevent the hemispherical heads from separating from the through holes, the separation blades are connected with an elastic piece, the elastic piece applies outward elasticity to the separation blades to enable the hemispherical heads to protrude outwards from the through holes, the probes are respectively connected with coaxial leads, the coaxial leads are hollow along the rotating rod to the top end of the rotating rod, a coaxial socket is arranged at the top end of the rotating rod, the coaxial leads are connected with the coaxial socket, an elastic reset button is arranged at the top end of the driving, the coaxial plug is connected with a soil humidity sensor on the shell through a coaxial wire, the soil humidity sensor transmits detected soil humidity analog quantity to the analog-to-digital converter, the analog-to-digital converter converts the transmitted analog quantity into digital quantity and transmits the digital quantity to the single chip microcomputer, the single chip microcomputer performs operation processing on the transmitted digital quantity and transmits an operation processing result to the display screen, the display screen displays the soil moisture content, and the battery provides electric energy for the whole detection unit.
Further, an upper end cover is arranged at the top end of the driving pipe, a guide hole for the coaxial plug to come in and go out is formed in the center of the upper end cover, a lower end cover is arranged at the bottom end of the driving pipe, and a guide hole for the rotating rod to come in and go out is formed in the center of the lower end cover.
Further, a rubber sleeve is arranged on the outer wall of the driving pipe.
Further, the distance between the clutch wheel and the blocking piece can ensure that the rotating wheel just leaves the clutch wheel completely when rotating.
Furthermore, a spiral soil discharging groove is formed in the drill bit.
Furthermore, for the convenience of understanding the soil depth where the probe is located, the rotating rod is provided with scales.
Further, in order to make the probe contact with the soil sufficiently, the probe is surrounded by a diameter slightly larger than the maximum diameter of the drill bit. Because the probe is acted by the elastic element, the probe does not influence the rotation of the drill bit.
Further, the soil humidity sensor is an FDS100 soil humidity sensor.
Further, the single chip microcomputer is AT89C51 in model.
The working process of the invention is as follows: the soil drilling unit is vertically placed on the ground, the driving pipe is held by a hand to exert downward force, the driving pipe moves downward, the rotating wheel is contacted with the clutch wheel under the action of gravity and the driving pipe, the ratchets on the rotating wheel are occluded and stopped with the ratchets of the clutch wheel, the spiral grooves of the driving pipe and the spiral protrusions of the rotating wheel are matched with each other to drive the rotating rod to rotate, the rotating rod drives the drill bit to rotate, and the drill bit drills holes in the ground; when the driving pipe is held by hand to move upwards, the spiral groove of the driving pipe is matched with the spiral bulge of the rotating wheel, so that the rotating wheel bears an upward force, the rotating wheel is separated from the clutch wheel, the rotating wheel idles on the rotating rod under the action of the driving pipe, and the rotating rod and the drill bit cannot rotate reversely; the driving pipe reciprocates up and down to drive the drill bit to punch holes on the ground, when the holes reach a certain depth, the holes are stopped, the elastic reset button is pressed to enable the coaxial plug to be connected with the coaxial socket, the probe is communicated with the soil humidity sensor, the soil humidity sensor transmits the collected soil humidity analog quantity to the analog-to-digital converter, the analog-to-digital converter converts the transmitted analog quantity into digital quantity and transmits the digital quantity to the single chip microcomputer, the single chip microcomputer performs operation processing on the transmitted digital quantity and transmits the operation processing result to the display screen, and the display screen displays the soil moisture content.
The invention has the beneficial effects that: need not to borrow soil, direct drilling detection on the soil, convenient and fast can detect the soil humidity parameter of the different degree of depth, and overall structure sets up rationally, and measurement accuracy is high, and the dependable performance can guide agricultural production better.
Drawings
Fig. 1 is a schematic diagram of the appearance structure of the present invention.
Fig. 2 is a schematic diagram of the internal structure of the earth drilling unit.
Fig. 3 is a schematic structural diagram of the driving assembly of the present invention.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
The utility model provides a soil moisture detection device which characterized by: the soil humidity detection device comprises a soil drilling unit and a detection unit;
the soil drilling unit is used for drilling holes in the soil so as to facilitate the probe in the detection unit to extend into the soil; the soil drilling unit comprises a driving pipe 1, a rotating rod 9, a driving assembly and a drill bit 6; the driving pipe 1 drives the rotating rod 9 to rotate through up-and-down reciprocating motion, the driving pipe 1 is a hollow cylindrical pipe, and a spiral groove 19 is formed in the inner wall of the driving pipe 1; the rotating rod 9 is a hollow cylindrical rod, the length of the rotating rod 9 is greater than that of the driving tube 1, the outer diameter of the rotating rod 9 is smaller than the inner diameter of the driving tube 1, the top end of the rotating rod 9 extends into the hollow of the driving tube 1, and a plurality of through holes 21 for arranging probes are formed in the position, close to the bottom end, of the rotating rod 9; the driving assembly is arranged on the rotating rod 9 and is matched with the driving pipe 1 to drive the rotating rod 9 to rotate, and the driving assembly comprises a rotating wheel 15, a clutch wheel 14 and a blocking piece 17; the rotating wheel 15 is arranged at the position, close to the top end, of the rotating rod 9, the rotating wheel 15 can rotate on the rotating rod 9 and can slide up and down on the rotating rod 9, the side wall of the rotating wheel 15 is provided with a spiral protrusion 16, the spiral protrusion 16 is matched with a spiral groove 19 on the driving pipe 1, and the lower surface of the rotating wheel 15 is provided with a ratchet 22; the clutch wheel 14 controls the rotating wheel 15 to rotate on the rotating rod 9 in a one-way mode, the clutch wheel 14 is arranged below the rotating wheel 15 and fixed with the rotating rod 9, the upper surface of the clutch wheel 14 is provided with a ratchet 23, and the ratchet 23 is matched with a ratchet 22 on the lower surface of the rotating wheel 15; the blocking piece 17 is fixedly arranged at the top end of the rotating rod 9, and the blocking piece 17 can block the rotating wheel 15 from coming off from the rotating rod 9; the drill bit 6 is fixedly arranged at the bottom end of the rotating rod 9;
the detection unit comprises a shell 4, a soil humidity sensor arranged on the shell 4, an analog-to-digital converter, a single chip microcomputer, a display screen 5 and a battery, wherein a plurality of probes of the soil humidity sensor are respectively arranged in a plurality of through holes 21 on a rotating rod 9, the probes are insulated from the rotating rod 9, the probes comprise a hemispherical head 7 and a baffle 12 arranged on the plane of the hemispherical head 7, the hemispherical head 7 can stretch in the through holes 21, the baffle 12 can prevent the hemispherical head 7 from separating from the through holes 21, the baffle 12 is connected with an elastic piece 11, the elastic piece 11 applies outward elasticity to the baffle 12 to enable the hemispherical head 7 to protrude outwards the through holes 21, the probes are respectively connected with coaxial wires 13, the coaxial wires 13 are hollow along the rotating rod 9 to the top end of the rotating rod 9, a coaxial socket 18 is arranged at the top end of the rotating rod 9, the coaxial wires 13 are connected with the coaxial socket 18, an, the elastic reset button 2 is provided with a coaxial plug 20, the coaxial plug 20 is matched with a coaxial socket 18 on the rotating rod 9, the coaxial plug 20 is connected with a soil humidity sensor on the shell 4 through a coaxial wire 3, the soil humidity sensor transmits detected soil humidity analog quantity to an analog-to-digital converter, the analog-to-digital converter converts the transmitted analog quantity into digital quantity and transmits the digital quantity to a single chip microcomputer, the single chip microcomputer performs operation processing on the transmitted digital quantity and transmits an operation processing result to the display screen 5, the display screen 5 displays the soil moisture content, and the battery provides electric energy for the whole detection unit.
Further, an upper end cover is arranged at the top end of the driving tube 1, a guide hole for the coaxial plug 20 to come in and go out is formed in the center of the upper end cover, a lower end cover is arranged at the bottom end of the driving tube 1, and a guide hole for the rotating rod 9 to come in and go out is formed in the center of the lower end cover.
Further, the outer wall of the driving pipe 1 is provided with a rubber sleeve 10.
Further, the distance between the clutch wheel 14 and the blocking member 17 is such that the rotary wheel 15 is just completely separated from the clutch wheel 14 when rotating.
Further, a spiral soil discharging groove is formed in the drill 6.
Furthermore, for the convenience of understanding the soil depth that the probe is located, be equipped with scale 8 on the dwang.
Further, in order to make the probe contact with the soil sufficiently, the probe is surrounded by a diameter slightly larger than the maximum diameter of the drill bit. Since the feeler is acted upon by the elastic element 11, the feeler does not influence the rotation of the drilling head 6.
Further, the soil humidity sensor is an FDS100 soil humidity sensor.
Further, the single chip microcomputer is AT89C51 in model.
Claims (9)
1. The utility model provides a soil moisture detection device which characterized by: the soil humidity detection device comprises a soil drilling unit and a detection unit;
the soil drilling unit is used for drilling holes in the soil so as to facilitate the probe in the detection unit to extend into the soil; the soil drilling unit comprises a driving pipe, a rotating rod, a driving assembly and a drill bit; the driving pipe drives the rotating rod to rotate through up-and-down reciprocating motion, the driving pipe is a hollow cylindrical pipe, and a spiral groove is formed in the inner wall of the driving pipe; the rotating rod is a hollow cylindrical rod, the length of the rotating rod is greater than that of the driving tube, the outer diameter of the rotating rod is smaller than the inner diameter of the driving tube, the top end of the rotating rod extends into the hollow part of the driving tube, and a plurality of through holes for arranging probes are formed in the position, close to the bottom end, of the rotating rod; the driving assembly is arranged on the rotating rod and is matched with the driving pipe to drive the rotating rod to rotate, and the driving assembly comprises a rotating wheel, a clutch part and a blocking part; the rotating wheel is arranged at the position, close to the top end, of the rotating rod, the rotating wheel can rotate on the rotating rod and can slide up and down on the rotating rod, and spiral protrusions are arranged on the side wall of the rotating wheel and matched with spiral grooves in the driving pipe; the clutch part controls the rotating wheel to rotate on the rotating rod in a single direction, the clutch part comprises a static wheel and a driving wheel, the static wheel is arranged below the rotating wheel and fixed with the rotating rod, the upper surface of the static wheel is provided with a ratchet, the driving wheel is fixed on the lower surface of the rotating wheel and integrally formed with the rotating wheel, the lower surface of the driving wheel is provided with a ratchet, and the ratchet of the driving wheel is matched with the ratchet of the static wheel; the blocking piece is fixedly arranged at the top end of the rotating rod and can block the rotating wheel from coming off the rotating rod; the drill bit is fixedly arranged at the bottom end of the rotating rod;
the detection unit comprises a shell, a soil humidity sensor arranged on the shell, an analog-to-digital converter, a single chip microcomputer, a display screen and a battery, wherein a plurality of probes of the soil humidity sensor are respectively arranged in a plurality of through holes on the rotating rod, the probes are insulated from the rotating rod, each probe comprises a hemispherical head and a separation blade arranged on the plane of the hemispherical head, the hemispherical heads can extend and retract in the through holes and can prevent the hemispherical heads from separating from the through holes, the separation blades are connected with an elastic piece, the elastic piece applies outward elasticity to the separation blades to enable the hemispherical heads to protrude outwards from the through holes, the probes are respectively connected with coaxial leads, the coaxial leads are hollow along the rotating rod to the top end of the rotating rod, a coaxial socket is arranged at the top end of the rotating rod, the coaxial leads are connected with the coaxial socket, an elastic reset button is arranged at the top end of the driving, the coaxial plug is connected with a soil humidity sensor on the shell through a coaxial wire, the soil humidity sensor transmits detected soil humidity analog quantity to the analog-to-digital converter, the analog-to-digital converter converts the transmitted analog quantity into digital quantity and transmits the digital quantity to the single chip microcomputer, the single chip microcomputer performs operation processing on the transmitted digital quantity and transmits an operation processing result to the display screen, the display screen displays the soil moisture content, and the battery provides electric energy for the whole detection unit.
2. A soil moisture sensing device according to claim 1, wherein: the top end of the driving pipe is provided with an upper end cover, the center of the upper end cover is provided with a guide hole for the coaxial plug to come in and go out, the bottom end of the driving pipe is provided with a lower end cover, and the center of the lower end cover is provided with a guide hole for the rotating rod to come in and go out.
3. A soil moisture sensing device according to claim 1, wherein: and a rubber sleeve is arranged on the outer wall of the driving pipe.
4. A soil moisture sensing device according to claim 1, wherein: the distance between the clutch wheel and the blocking piece can ensure that the rotating wheel just leaves the clutch wheel completely when rotating.
5. A soil moisture sensing device according to claim 1, wherein: and the drill bit is provided with a spiral soil discharging groove.
6. A soil moisture sensing device according to claim 1, wherein: and scales are arranged on the rotating rod.
7. A soil moisture sensing device according to claim 1, wherein: the diameter opening enclosed by the probe is slightly larger than the maximum diameter opening of the drill bit.
8. A soil moisture sensing device according to claim 1, wherein: the soil humidity sensor is an FDS100 soil humidity sensor.
9. A soil moisture sensing device according to claim 1, wherein: the type of the single chip microcomputer is AT89C 51.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810109884.2A CN108318659B (en) | 2018-02-05 | 2018-02-05 | Soil humidity detection device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810109884.2A CN108318659B (en) | 2018-02-05 | 2018-02-05 | Soil humidity detection device |
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| CN108318659A CN108318659A (en) | 2018-07-24 |
| CN108318659B true CN108318659B (en) | 2020-09-11 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113671149A (en) * | 2020-05-15 | 2021-11-19 | 农业农村部规划设计研究院 | Soil parameter measuring method and multifunctional portable soil parameter measuring device adopted by same |
| CN111912955B (en) * | 2020-08-05 | 2023-03-21 | 河南城建学院 | Soil humidity data acquisition equipment |
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| JP2005060955A (en) * | 2003-08-08 | 2005-03-10 | Ohbayashi Corp | Sampler in ground and contamination investigating method making use thereof |
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Effective date of registration: 20200812 Address after: 231340 Haan village, River shed Town, Shucheng County, Lu'an, Anhui Applicant after: Shucheng County Limin Farmer Professional Cooperative Address before: 476000 Shangqiu Ninth Middle School, Suiyang District, Shangqiu City, Henan Province Applicant before: Wei Changtong |
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