CN109459333B - Portable soil water content and volume weight measuring device and soil water content and volume weight measuring method - Google Patents
Portable soil water content and volume weight measuring device and soil water content and volume weight measuring method Download PDFInfo
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- CN109459333B CN109459333B CN201810993945.6A CN201810993945A CN109459333B CN 109459333 B CN109459333 B CN 109459333B CN 201810993945 A CN201810993945 A CN 201810993945A CN 109459333 B CN109459333 B CN 109459333B
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Abstract
The invention discloses a portable soil water content and volume weight measuring device and a soil water content and volume weight measuring method, wherein the portable soil water content and volume weight measuring device comprises: the soil moisture content measuring device, the soil weight measuring device, the base and the cutting ring for taking soil; soil moisture content measuring device includes: two UWB sensors used for detecting the soil moisture content; the two UWB sensors are positioned on two sides of the cutting ring; the soil weight measuring device includes: a cutting ring placing frame and a weight sensor; the cutting ring placing frame is provided with a placing groove for placing the cutting ring; the cutting ring placing rack is fixed to the weight sensor; the weight sensor is fixed to the base; the base is provided with a touch screen for a user to input parameters and display measurement results. The invention has the beneficial effects that the water content in the soil and the volume weight of the soil can be accurately measured.
Description
Technical Field
The invention relates to a portable soil water content and volume weight measuring device and a soil water content and volume weight measuring method.
Background
The soil water content generally refers to the absolute water content of the soil, namely 100g of dried soil contains a plurality of grams of water, and is also called the soil water content. The water content of the soil is measured, the water requirement condition of crops can be mastered, and the method has important guiding significance for agricultural production. The soil water content is generally measured by a drying and weighing method, and specifically comprises a constant temperature oven drying method, an alcohol combustion method, an infrared drying method and the like. The existing drying and weighing method is inconvenient to carry by the required drying equipment during measurement. When measuring, the staff will carry the soil of gathering after the sampling to drying equipment and dry, thereby can cause moisture evaporation in the soil to make the measuring result have the error of different degrees on the way in the transport.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention aims to provide a portable soil water content and volume weight measuring device which has a sealed measuring space and can accurately measure in multiple directions and a measuring method adopting the device.
In order to achieve the above object, the present invention adopts the following technical solutions:
a portable soil water content and volume weight measuring device, includes: the soil moisture content measuring device, the soil weight measuring device, the base and the cutting ring for taking soil; soil moisture content measuring device includes: two UWB sensors used for detecting the soil moisture content; the two UWB sensors are positioned on two sides of the cutting ring; the soil weight measuring device includes: a cutting ring placing frame and a weight sensor; the cutting ring placing frame is provided with a placing groove for placing the cutting ring; the cutting ring placing rack is fixed to the weight sensor; the weight sensor is fixed to the base; the base is provided with a touch screen for a user to input parameters and display measurement results.
Further, portable soil water content and unit weight measuring device still includes: two automatic adjusting devices for adjusting the positions of the two UWB sensors respectively; the automatic adjusting device includes: the device comprises a horizontal moving motor, a vertical moving motor, a guide rib group, a first moving part, a first screw rod, a second screw rod, a guide frame and a second moving part; the guide rib group comprises two guide ribs for guiding the first movable piece to move; the two guide ribs are fixed to the base; a first guide channel for guiding the first movable piece to move relative to the base is formed between the two guide ribs; the horizontal moving motor is fixed to the base; the horizontal moving motor drives the first screw rod to rotate around a first axis; the first movable piece is matched with the first screw rod through threads so as to be driven by the first screw rod to move along a first axial direction relative to the base; the vertical moving motor drives the second screw rod to rotate around a second axis; the vertical moving motor and the guide frame are fixed to the first movable member; the guide frame is provided with a second guide channel for guiding the second movable piece to move relative to the first movable piece; the vertical moving motor drives the second screw rod to rotate; the second movable piece is matched with the second screw rod through threads so as to be driven by the second screw rod to move along the second axial direction relative to the first movable piece; the second axis is perpendicular to the first axis; the UWB sensor is mounted to the second moveable member.
Furthermore, the portable soil water content and volume weight measuring device also comprises a manual fine adjustment device for adjusting the position of the UWB sensor relative to the second moving part; the manual fine adjustment device comprises: the device comprises a laser emitter, a laser irradiation target, an emitter bracket, a target bracket, a movable block, a third screw, a sensor fixing plate, a connecting plate, an adjusting bolt, a spring and a nut; the laser emitter is fixed to the emitter bracket; the laser irradiation target is fixed to the target holder; the emitter bracket and the target bracket are respectively fixed to the two second movable pieces; the UWB sensor is fixed to the sensor fixing plate; the second movable piece is provided with a sliding groove; the movable block moves in the sliding chute; the adjusting bolt is matched with the second movable piece through threads; one end of the adjusting bolt is contacted with the movable block; the adjusting bolt and the spring are respectively contacted with two ends of the movable block; the movable block is provided with a through hole; the third screw penetrates through the through hole; the nut is matched with the third screw rod through threads; two ends of the connecting plate are fixed to the third screw and the sensor fixing plate; the connecting plate and the nut are positioned on two sides of the second movable piece.
Further, the spring is a compression spring; the spring is positioned in the sliding groove; the both ends of spring contact the cell wall and the movable block of spout respectively.
Furthermore, the sensor fixing plate is attached to the second movable piece and can move relative to the second movable piece.
Further, the cutting ring rack includes: the end surface part for limiting the position of the cutting ring and the side surface part for forming the placing groove; the two end surface parts are connected to two sides of the side part; the outer circumferential wall of the cutting ring is attached to the wall of the placing groove; the end surface of the cutting ring is jointed with the end surface part.
Further, the height of the end surface part is smaller than that of the side surface part; the depth of the placing groove is less than or equal to the radius of the cutting ring.
Further, portable soil water content and unit weight measuring device still includes: a circuit board and a rechargeable battery; the circuit board is provided with an MCU chip; the rechargeable battery supplies power for the UWB sensor and the weight sensor; the base is provided with an accommodating cavity; the rechargeable battery and the circuit board are located in the accommodating cavity.
Further, portable soil water content and unit weight measuring device still includes: a protective box and a movable cover; the protective box is arranged on the base to cover the soil moisture content measuring device, the soil weight measuring device and the cutting ring; the movable cover is slidably connected to the protective case.
Further, the portable soil water content and volume weight measuring device is adopted; taking a soil sample by using a cutting ring of a portable soil water content and volume weight measuring device; placing the cutting ring with the soil sample into a placing groove of a portable soil water content and volume weight measuring device; the touch screen displays the water content and the volume weight of the soil sample.
The invention has the advantages that: portable soil water content and unit weight measuring device can be in water content and unit weight in a plurality of position precision measurement soil. The method for measuring the water content and the volume weight of the soil by using the device is accurate in test.
Drawings
FIG. 1 is a schematic diagram of a portable soil moisture content and volume weight measuring device;
FIG. 2 is a schematic view of the internal structure of the protective case of the portable soil moisture content and volume-weight measuring device of FIG. 1;
FIG. 3 is a top view of the internal structure of the protective case of the portable soil moisture content and volume-weight measuring device of FIG. 1;
FIG. 4 is an exploded view of the structure within the protective case of the portable soil moisture content and volume-weight measuring device of FIG. 1;
FIG. 5 is a schematic view of the configuration of the automatic adjustment device of the portable soil moisture content and volume-weight measuring device of FIG. 1, showing the first movable member moving to one end of the first guide passageway;
FIG. 6 is another schematic view of the automatic adjustment mechanism of the portable soil moisture content and volume-weight measuring device of FIG. 1, illustrating the first movable member moved to a position away from an end of the first guide passageway;
FIG. 7 is a schematic view of a partial structure of an automatic adjusting device of the portable soil moisture content and volume-weight measuring device of FIG. 1;
FIG. 8 is a schematic view of the construction of the manual fine adjustment device of the portable soil moisture content and volume-weight measuring device of FIG. 1, showing the third screw adjusted to a certain position;
FIG. 9 is another schematic view of the manual fine adjustment mechanism of the portable soil moisture content and volume-weight measuring device of FIG. 1, showing the third screw adjusted to another position;
FIG. 10 is a front view of the construction of a manual fine adjustment device of the portable soil moisture content and volume-weight measuring device of FIG. 1;
fig. 11 is an exploded view of the construction of the manual fine adjustment device of the portable soil moisture content and volume-weight measuring device of fig. 1.
Detailed Description
The invention is described in detail below with reference to the figures and the embodiments.
As shown in fig. 1 to 11, a portable soil moisture content and volume-weight measuring device 100 includes: a soil moisture content measuring device 101, a soil weight measuring device 102, a base 103 and a cutting ring 104 for taking soil; the soil water content measuring device 101 includes: two UWB sensors 105 for detecting soil moisture content; two UWB sensors 105 are located on either side of the cutting ring 104; the soil weight measuring device 102 includes: a cutting ring placing frame 106 and a weight sensor 107; the cutting ring placing frame 106 is provided with a placing groove 108 for placing the cutting ring 104; the ring cutter holder 106 is fixed to the weight sensor 107; the weight sensor 107 is fixed to the base 103; the base 103 is provided with a touch screen 110 for a user to input parameters and display measurement results.
As a preferred embodiment, the portable soil moisture content and volume-weight measuring device 100 further includes: two automatic adjusting devices 111 that adjust the positions of the two UWB sensors 105, respectively; the automatic adjustment device 111 includes: a horizontal moving motor 112, a vertical moving motor 113, a guide rib set 114, a first movable member 115, a first screw 116, a second screw 117, a guide frame 118 and a second movable member 119; the guide rib set 114 includes two guide ribs 120 for guiding the movement of the first movable member 115; two guide ribs 120 are fixed to the base 103; a first guide channel 121 for guiding the first movable piece 115 to move relative to the base 103 is formed between the two guide ribs 120; the horizontal movement motor 112 is fixed to the base 103; the horizontal movement motor 112 drives the first screw 116 to rotate around the first axis 122; the first movable member 115 is in threaded engagement with the first screw 116 so as to be driven by the first screw 116 to move relative to the base 103 along a first axis 122; the vertical movement motor 113 drives the second screw 117 to rotate around the second axis 109; the vertical movement motor 113 and the guide bracket 118 are fixed to the first movable member 115; the guide frame 118 is formed with a second guide channel 123 for guiding the movement of the second hinge 119 relative to the first hinge 115; the vertical moving motor 113 drives the second screw 117 to rotate; second movable member 119 is threadingly engaged with second threaded rod 117 so as to be driven by second threaded rod 117 to move relative to first movable member 115 along second axis 109; second axis 109 is perpendicular to first axis 122; the UWB sensor 105 is mounted to a second moveable member 119.
In a preferred embodiment, portable soil moisture and volume-weight measuring device 100 further includes a manual fine-tuning device 124 for adjusting the position of UWB sensor 105 relative to second movable member 119; the manual fine adjustment device 124 includes: a laser emitter 125, a laser irradiation target 126, an emitter holder 127, a target holder 128, a movable block 129, a third screw 130, a sensor fixing plate 131, a connecting plate 132, an adjusting bolt 133, a spring 134, and a nut 135; the laser transmitter 125 is fixed to the transmitter mount 127; the laser irradiation target 126 is fixed to the target holder 128; the emitter support 127 and the target support 128 are respectively fixed to the two second moving pieces 119; the UWB sensor 105 is fixed to the sensor fixing plate 131; second hinge 119 defines a slide slot 136; the movable block 129 moves in the slide groove 136; the adjusting bolt 133 is in threaded fit with the second movable piece 119; one end of the adjusting bolt 133 is in contact with the movable block 129; the adjusting bolt 133 and the spring 134 contact both ends of the movable block 129, respectively; the movable block 129 is formed with a through hole 137; the third screw 130 passes through the through hole 137; the nut 135 and the third screw 130 are engaged by threads; both ends of the connection plate 132 are fixed to the third screw 130 and the sensor fixing plate 131; the web 132 and nut 135 are located on either side of the second hinge 119.
As a preferred embodiment, the spring 134 is a compression spring; the spring 134 is positioned in the movable groove; both ends of the spring 134 contact the groove wall of the movable groove and the movable block 129, respectively.
In a preferred embodiment, the sensor fixing plate 131 is attached to the second movable member 119 and can move relative to the second movable member 119.
As a preferred embodiment, the cutting ring holder 106 includes: an end surface portion 138 for restricting the position of the cutting ring 104 and a side surface portion 139 for forming the placement groove 108; two end surface portions 138 are connected to both sides of the side surface portion 139; the outer circumferential wall of the cutting ring 104 is attached to the wall of the placing groove 108; the end face 140 of the ring cutter 104 abuts the end face portion 138.
In a preferred embodiment, the height of the end surface portion 138 is smaller than the height of the side surface portion 139; the groove depth of the placing groove 108 is less than or equal to the radius of the cutting ring 104.
As a preferred embodiment, the portable soil moisture content and volume-weight measuring device 100 further includes: a circuit board 141 and a rechargeable battery 142; the circuit board 141 is provided with an MCU chip 143; a rechargeable battery 142 powers the UWB sensor 105 and the weight sensor 107; the base 103 is formed with a housing cavity; the rechargeable battery 142 and the circuit board 141 are located in the receiving cavity.
As a preferred embodiment, the portable soil moisture content and volume-weight measuring device 100 further includes: a protective enclosure 145 and a removable cover 146; the protection box 145 is mounted to the base 103 to cover the soil moisture content measuring device 101, the soil weight measuring device 102, and the cutting ring 104; removable cover 146 is slidably coupled to shield 145.
As a preferred embodiment, the above-described portable soil moisture content and volume-weight measuring device 100 is used; sampling soil by using a cutting ring 104 of the portable soil water content and volume weight measuring device 100; placing the cutting ring 104 with the soil sample into a placing groove 108 of the portable soil water content and volume weight measuring device 100; the touch screen 110 displays the water content and the volume weight of the soil sample.
The working principle is as follows: the cutting ring 104 of the portable soil moisture content and volume-weight measuring device 100 is tubular and has a central hole that can receive sample soil. Two UWB sensors 105 are located on either side of the cutting ring 104 and face and align with the ends of the central bore.
The user can input different parameters through the touch screen 110, for example, when the cutting ring 104 with different models and weights is selected, the model parameters and the weight parameters of the cutting ring 104 can be uploaded to the MCU chip 143 through the touch screen 110 for calculation. The measurement data and the calculation result of the portable soil water content and volume weight measurement device 100 are displayed on the touch screen 110 for the user to read.
When the portable soil water content and volume-weight measuring device 100 is used for the first time, the weight sensor 107 measures the weights of the cutting ring 104 and the cutting ring placing frame 106 when the sample soil is not grabbed and transmits the measured data to the MCU chip 143. The MCU chip 143 records the data uploaded by the weight sensor 107 as initial data and zeroes this initial data at each subsequent measurement. After the cutting ring 104 grabs the sample soil and places the sample soil on the cutting ring placing frame 106, the MCU chip 143 resets the weight data of the cutting ring 104 and the cutting ring placing frame 106 to zero so that the data measured by the weight sensor 107 is the weight of the sample soil. In this way, the weight of the cutting ring 104 and the cutting ring holder 106 does not need to be manually zeroed each time the soil moisture content and volume weight are measured. And can be reset through the touch screen 110 when the initial data needs to be changed.
As a use of the UWB sensor, it is generally used to detect a distance. Further, spatial localization may be achieved by a plurality of spatial distances. The basic operating principle of UWB sensors is the use of time-of-flight ranging. Time-of-flight ranging methods mainly use the time of flight of a signal between two asynchronous transceivers to measure the distance between nodes. The two-way time-of-flight method generates an independent time stamp for each module from the start. The transmitter Ta1 of module a transmits a pulse signal of requesting nature on its time stamp, and module B transmits a signal of responding nature at the time Tb2, which is received by module a at the time of its own time stamp Ta 2. From this, the time of flight of the pulse signal between the two modules can be calculated, and the distance of flight S can be determined.
Distance: and S ═ C [ (Ta2-Ta1) - (Tb2-Tb1) ] (C is the speed of light).
This application utilizes the principle that electromagnetic wave propagation speed is different in different media, places the both sides of the object that awaits measuring with traditional UWB sensor as a new using-way, and the medium has directly influenced UWB sensor's detected data, perhaps the data that UWB sensor detected is influenced by the medium that the electromagnetic wave passed through. Electromagnetic waves released by the UWB sensor penetrate through soil, and the proportion of different components in the soil directly influences the transmission speed of the electromagnetic waves, so that the measurement data of the UWB sensor is influenced.
The UWB sensor 105 is irradiated with an electromagnetic wave penetrating the soil sample. The dielectric constants of different media are different, and the transmission speeds of electromagnetic waves in different media are different. The dielectric constants of common media can be found in the table below.
Dielectric constant table of common media
| Media name | Dielectric constant | Media name | Dielectric constant |
| Air (a) | 1 | Dry coal dust | 2.2 |
| Washing powder | 1.1～1.3 | Gypsum plaster | 1,8～2.5 |
| Liquid gas | 1.2～1.7 | Edible oil | 2～4 |
| Plastic granules | 1.5～2 | Grain food | 2.5～4.5 |
| Glass sheet | 1.2～2.2 | Dry sand | 3～4 |
| Milk powder | 1.8～2.2 | Asphalt | 4～5 |
| Gasoline (gasoline) | 1.9 | Cement | 4～6 |
| Cycloethanol | 2 | Methyl ether | 5 |
| Diesel oil | 2.1 | Butanol | 11 |
| Dry coal dust | 2.2 | Water (W) | 81 |
Among the components constituting the soil, water has a dielectric constant much higher than that of sand and air. That is, the amount of water content will affect the transmission speed and attenuation speed of electromagnetic waves in soil. Since the dielectric constant of water is several tens times that of sandy soil and air, the soil acts as a mixture, and the transmission speed and attenuation speed of electromagnetic waves are mainly determined by the water content. The water content in the soil is linearly related to the data measured by the UWB sensor 105. For example, the soil moisture content data is set to Y, and the measurement data of the UWB sensor 105 is set to X. Can be expressed by the formula Y ═ aX + b. a and b are constant coefficients.
The weight detected by the weight sensor is the weight of the soil, and the total weight of the soil is multiplied by the water content, namely the weight of the water in the soil by calculating the water content data in the soil and the weight data of the soil. The total weight of the soil minus the weight of water is the dry weight of the soil. The dry weight of the soil divided by the total weight of the soil is the volume weight of the soil. And displaying the volume weight and the water content of the soil on the touch screen for workers to read.
When the portable soil moisture content and volume-weight measuring device 100 performs measurement, the automatic adjusting device 111 is activated. First movable member 115 and first threaded rod 116 are threadably engaged. The horizontal movement motor 112 drives the first screw 116 to rotate around the first axis 122 so as to drive the first movable member 115 to move horizontally in the direction of the first axis 122. The UWB sensor 105 is connected to a second moveable member 119. The second movable member 119 is sleeved on the vertical moving motor 113 through a second screw 117. The vertical movement motor 113 is fixed to the first movable member 115. The first moveable member 115 moves the UWB sensor 105 in a horizontal direction parallel to the first axis 122 to achieve automatic adjustment of the UWB sensor 105 in the horizontal direction.
The second movable member 119 is threadedly engaged with the second screw 117 so as to move the second movable member 119 up and down relative to the second screw 117 in the direction of the second axis 109 when the vertical movement motor 113 drives the second screw 117 to rotate about the second axis 109. The second movable member 119 moves the UWB sensor 105 up and down in a direction parallel to the second axis 109 to achieve automatic adjustment of the UWB sensor 105 in the vertical direction.
After the automatic adjustment device 111 has made the adjustment, there may be some error in the relative positions of the two UWB sensors 105 from the expected positions. The manual fine adjustment device 124 may make fine adjustments to the position of the UWB sensor 105 to minimize measurement errors.
The UWB sensor 105 is fixedly connected to the third screw 130 through a connection plate 132. The third screw 130 is threaded through the through hole 137 of the movable block 129 to engage the nut 135. The manual adjustment nut 135 can drive the third screw 130 to move up and down in a direction perpendicular to the nut 135 relative to the nut 135 so as to drive the UWB sensor 105 to move up and down through the connecting plate 132. Thereby enabling manual fine-tuning of the UWB sensor 105 in the vertical direction.
The movable block 129 in the slide groove 136 is located between the adjusting bolt 133 and the spring 134. When the adjustment bolt 133 is rotated, the pushing force applied to the movable block 129 by one end of the adjustment bolt 133 is opposite to the elastic force applied to the movable block 129 by the spring 134 after being pressed. When the pushing force applied to the movable block 129 by one end of the adjusting bolt 133 when the adjusting bolt 133 is rotated is greater than the elastic force applied to the movable block 129 by the spring 134, the movable block 129 drives the third screw 130 to move horizontally in the direction of the position of the spring 134. When the pushing force of one end of the adjusting bolt 133 on the movable block 129 is smaller than the elastic force of the spring 134 on the movable block 129 when the adjusting bolt 133 is rotated, the movable block 129 drives the third screw 130 to move horizontally in the direction of the position of the adjusting bolt 133. Thereby enabling manual fine-tuning of the UWB sensor 105 in the vertical direction.
The laser transmitter 125 is fixed to one UWB sensor 105. The laser irradiation target is fixed to another UWB sensor 105. When the light emitted from the laser emitter 125 irradiates the target of the laser irradiation target, it indicates that the two UWB sensors are in the opposite position. The position of the light emitted by the laser emitter 125 relative to the laser-illuminated target may assist the user in adjusting the manual fine-tuning device 124 to adjust the two UWB sensors to relative positions, ensuring accuracy of the measurement.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It should be understood by those skilled in the art that the above embodiments do not limit the present invention in any way, and all technical solutions obtained by using equivalent alternatives or equivalent variations fall within the scope of the present invention.
Claims (9)
1. The utility model provides a portable soil water content and unit weight measuring device which characterized in that includes: the soil moisture content measuring device, the soil weight measuring device, the base and the cutting ring for taking soil; the soil moisture content measuring device includes: two UWB sensors used for detecting the soil moisture content; the two UWB sensors are positioned on two sides of the cutting ring; the soil weight measuring device includes: a cutting ring placing frame and a weight sensor; the cutting ring placing frame is provided with a placing groove for placing the cutting ring; the cutting ring placing frame is fixed to the weight sensor; the weight sensor is fixed to the base; the base is provided with a touch screen for a user to input parameters and can display a measurement result; portable soil water content and unit weight measuring device still includes: two automatic adjusting devices for adjusting the positions of the two UWB sensors respectively; the automatic adjusting device comprises: the device comprises a horizontal moving motor, a vertical moving motor, a guide rib group, a first moving part, a first screw rod, a second screw rod, a guide frame and a second moving part; the guide rib group comprises two guide ribs for guiding the first movable piece to move; the two guide ribs are fixed to the base; a first guide channel for guiding the first movable piece to move relative to the base is formed between the two guide ribs; the horizontal moving motor is fixed to the base; the horizontal moving motor drives the first screw rod to rotate around a first axis; the first movable piece is matched with the first screw rod through threads so as to be driven by the first screw rod to move relative to the base along a first axial direction; the vertical moving motor drives the second screw rod to rotate around a second axis; the vertical movement motor and the guide frame are fixed to the first movable member; the guide frame is provided with a second guide channel for guiding the second movable piece to move relative to the first movable piece; the vertical moving motor drives the second screw rod to rotate; the second movable piece is matched with the second screw rod through threads so as to be driven by the second screw rod to move along a second axial direction relative to the first movable piece; the second axis is perpendicular to the first axis; the UWB sensor is mounted to the second moveable member.
2. The portable soil moisture content and volume-weight measuring device of claim 1, wherein:
the portable soil water content and volume weight measuring device further comprises a manual fine adjustment device for adjusting the position of the UWB sensor relative to the second moving part; the manual fine adjustment device comprises: the device comprises a laser emitter, a laser irradiation target, an emitter bracket, a target bracket, a movable block, a third screw, a sensor fixing plate, a connecting plate, an adjusting bolt, a spring and a nut; the laser transmitter is fixed to the transmitter bracket; the laser irradiation target is fixed to the target holder; the emitter support and the target support are respectively fixed to the two second movable members; the UWB sensor is fixed to the sensor fixing plate; the second movable piece is provided with a sliding groove; the movable block moves in the sliding groove; the adjusting bolt is matched with the second movable piece through threads; one end of the adjusting bolt is contacted with the movable block; the adjusting bolt and the spring are respectively contacted with two ends of the movable block; the movable block is provided with a through hole; the third screw penetrates through the through hole; the nut is matched with the third screw rod through threads; both ends of the connecting plate are fixed to the third screw and the sensor fixing plate; the connecting plate and the nut are located on two sides of the second movable piece.
3. The portable soil moisture content and volume-weight measuring device of claim 2, wherein:
the spring is a compression spring; the spring is positioned in the sliding groove; and two ends of the spring are respectively contacted with the groove wall of the sliding groove and the movable block.
4. The portable soil moisture content and volume-weight measuring device of claim 2, wherein:
the sensor fixing plate is attached to the second movable piece and can move relative to the second movable piece.
5. The portable soil moisture content and volume-weight measuring device of claim 1, wherein:
the cutting ring rack includes: an end surface part for limiting the position of the cutting ring and a side surface part for forming the placing groove; the two end surface parts are connected to two sides of the side surface part; the outer circumferential wall of the cutting ring is attached to the wall of the placing groove; the end face of the cutting ring is attached to the end face portion.
6. The portable soil moisture content and volume-weight measuring device of claim 5, wherein:
the height of the end surface part is smaller than that of the side surface part; the depth of the placing groove is less than or equal to the radius of the cutting ring.
7. The portable soil moisture content and volume-weight measuring device of claim 1, wherein:
portable soil water content and unit weight measuring device still includes: a circuit board and a rechargeable battery; the circuit board is provided with an MCU chip; the rechargeable battery supplies power to the UWB sensor and the weight sensor; the base is provided with an accommodating cavity; the rechargeable battery and the circuit board are located in the accommodating cavity.
8. The portable soil moisture content and volume-weight measuring device of claim 1, wherein:
portable soil water content and unit weight measuring device still includes: a protective box and a movable cover; the protective case is mounted to the base to cover the soil moisture content measuring device, the soil weight measuring device, and the cutting ring; the movable cover is slidably connected to the protective case.
9. A method for measuring water content and volume weight of soil is characterized in that:
using the portable soil moisture and volume-weight measuring device of any one of claims 1 to 8; taking a soil sample by using the cutting ring of the portable soil water content and volume weight measuring device; placing the cutting ring with the soil sample into a placing groove of the portable soil water content and volume weight measuring device; the touch screen displays the water content and the volume weight of the soil sample.
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| CN201810593286 | 2018-06-08 | ||
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| CN201810993945.6A Active CN109459333B (en) | 2018-06-08 | 2018-08-29 | Portable soil water content and volume weight measuring device and soil water content and volume weight measuring method |
| CN201811324905.9A Active CN109540928B (en) | 2018-06-08 | 2018-11-08 | Plant density measuring device and plant density measuring method |
| CN201811325378.3A Active CN109557112B (en) | 2018-06-08 | 2018-11-08 | Grain water content measuring device and grain water content measuring method |
| CN201811336194.7A Pending CN109633787A (en) | 2018-06-08 | 2018-11-08 | Precipitation guide line measuring device |
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| CN201811325378.3A Active CN109557112B (en) | 2018-06-08 | 2018-11-08 | Grain water content measuring device and grain water content measuring method |
| CN201811336194.7A Pending CN109633787A (en) | 2018-06-08 | 2018-11-08 | Precipitation guide line measuring device |
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| CN112213229A (en) * | 2020-10-15 | 2021-01-12 | 长沙永诺科技有限公司 | Equipment convenient to accurate detection greening engineering soil water content |
| CN113008950A (en) * | 2021-02-13 | 2021-06-22 | 中国科学院南京土壤研究所 | NB-IoT (NB-IoT) -based soil parameter sensor |
| CN113155666A (en) * | 2021-03-12 | 2021-07-23 | 江苏光质检测科技有限公司 | Soil detection device and soil water content and volume weight detection method |
| CN114371099A (en) * | 2021-12-30 | 2022-04-19 | 牧原食品股份有限公司 | Method, device and readable storage medium for acquiring solid manure volume weight of poultry manure |
| CN117507775A (en) * | 2022-07-26 | 2024-02-06 | 比亚迪股份有限公司 | Vehicle control method, vehicle, and storage medium |
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- 2018-08-29 CN CN201810993944.1A patent/CN109470721B/en active Active
- 2018-08-29 CN CN201810993945.6A patent/CN109459333B/en active Active
- 2018-11-08 CN CN201811324905.9A patent/CN109540928B/en active Active
- 2018-11-08 CN CN201811325378.3A patent/CN109557112B/en active Active
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| CN109459333A (en) | 2019-03-12 |
| CN109557112A (en) | 2019-04-02 |
| CN109557112B (en) | 2020-08-28 |
| CN109540928A (en) | 2019-03-29 |
| CN109470721B (en) | 2020-11-03 |
| CN109633787A (en) | 2019-04-16 |
| CN109470721A (en) | 2019-03-15 |
| CN109540928B (en) | 2020-08-28 |
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