CN115494125A - Trunk moisture distribution monitoring device and method - Google Patents
Trunk moisture distribution monitoring device and method Download PDFInfo
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- G01N27/223—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance for determining moisture content, e.g. humidity
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- G—PHYSICS
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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- G01N27/22—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance
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Abstract
The application relates to the technical field of agricultural science and provides a trunk moisture distribution monitoring device and a trunk moisture distribution monitoring method, wherein the trunk moisture distribution monitoring device comprises a box body; a conveying mechanism and a dielectric measurement module are arranged in the box body; the conveying mechanism is connected with the dielectric measurement module; the conveying mechanism is used for driving one end of the dielectric measuring module to move in the trunk; the dielectric measurement module is used for acquiring moisture distribution information inside the trunk. The application provides a trunk moisture distribution monitoring devices, moisture and the distribution that can real-time detection trunk xylem heartwood and boundary wood can acquire the moisture difference of xylem different positions on the trunk horizontal direction simultaneously to improve the accuracy of trunk moisture distribution monitoring.
Description
Technical Field
The application relates to the technical field of agricultural science, in particular to a device and a method for monitoring moisture distribution of a trunk.
Background
Traditional trunk moisture monitoring methods mainly include thermocouple hygrometry, pressure chamber measurement, cell sap concentration, plant stem flow rate, gamma ray densitometry, magnetic resonance imaging and the like. However, these methods have a series of disadvantages such as high cost, measurement time lag, radiation to human body, etc. In recent years, time Domain Reflectometry (TDR) and Frequency Domain Reflectometry (FDR) sensors have been used in tandem to measure trunk moisture changes. The time domain reflection method is a common volume water content detection method, and the method inverts the dielectric constant of a measured object by measuring the incident and reflection time difference of electromagnetic pulses on a transmission line and obtains a water content value according to an empirical formula. The standing wave rate method is firstly used for measuring the water content of soil and is later used for measuring the volume water content of the trunk of the live stumpage. However, the sensor probes of these two methods are generally of a probe type, and the probe length is short, and only the moisture of the wood sapwood is measured.
If the probe is too long, pierce heartwood, then the measuring result is the average value of both moisture contents really, and is all inaccurate to sapwood and heartwood, and artificially distinguish sapwood moisture content and heartwood moisture content and measure respectively, all relatively more complicated to most ordinary forestry worker, and maneuverability is not strong. In addition, due to the different growth speeds of the xylem of the tree in different directions, the xylem duct system located on the south side is developed and smooth, and the solar radiation time of the tree crown on the south side is long, so that the xylem water content in different directions on the same height of the trunk is inconsistent, and particularly the difference between the south and the north is large. Therefore, the traditional probe type can only measure the moisture of the wood sapwood of the trunk at fixed points, thereby causing poor accuracy of trunk moisture measurement.
Disclosure of Invention
The embodiment of the application provides a trunk moisture distribution monitoring device and method, which are used for solving the technical problem of poor trunk moisture measurement accuracy.
The embodiment of the application provides a trunk moisture distribution monitoring device, which comprises a box body; a conveying mechanism and a dielectric measurement module are arranged in the box body; the conveying mechanism is connected with the dielectric measurement module;
the conveying mechanism is used for driving one end of the dielectric measurement module to move in the trunk;
the dielectric measurement module is used for acquiring moisture distribution information inside the trunk.
In one embodiment, the dielectric measurement module includes a sensor and a sensor probe;
the sensor and the sensor probe are connected through a transmission line;
the sensor probe is used for moving inside the trunk so as to acquire moisture distribution information inside the trunk.
In one embodiment, the sensor probe comprises a first metal ring for acting as an emitter and a second metal ring for acting as a receiver;
the first metal ring and the second metal ring are matched to form a closed-loop electromagnetic field.
In one embodiment, the conveying mechanism comprises a stepping motor, a coupler, a slide block, a lead screw and a plurality of optical axes;
the stepping motor is connected with the lead screw through the coupler;
the lead screw and the optical axes penetrate through the sliding block; the lead screw is used for driving the sliding block to move;
the slider is connected with the dielectric measurement module and used for driving the dielectric measurement module to move.
In one embodiment, the conveying mechanism further comprises a stepping motor base, an optical axis support member and a limit switch arranged on the optical axis support member;
the stepping motor base is used for fixing the stepping motor;
the optical axis supporting member is used for fixing a plurality of optical axes;
the limit switch is used for limiting the sliding block.
In one embodiment, the box body comprises a control box body and a control box cover connected with the control box body;
the same sides of the control box body and the control box cover are respectively provided with a clamp; the clamp is used for fixing the box body on the trunk.
In one embodiment, the case further comprises a control circuit; the control circuit comprises a motor driving module and an acquisition module;
the motor driving module is used for driving the stepping motor;
the acquisition module is used for acquiring the measurement information of the dielectric measurement module.
In one embodiment, the case further comprises a battery pack; the battery pack is used for supplying power to the control circuit.
In one embodiment, the housing is provided with an opening for the sensor probe to enter and exit.
The embodiment of the present application further provides a trunk moisture distribution monitoring method, which is applied to the above-mentioned trunk moisture distribution monitoring device, including:
determining sampling information of a sensor probe;
controlling the sensor probe to move in the trunk according to the sampling information so as to acquire voltage information acquired by the sensor probe;
and determining the moisture distribution information inside the trunk according to the correlation information of the voltage information and the water content of the trunk.
The embodiment of the application provides a trunk moisture distribution monitoring device and method, wherein the trunk moisture distribution monitoring device comprises a box body; a conveying mechanism and a dielectric measuring module are arranged in the box body; the conveying mechanism is connected with the dielectric measurement module; the conveying mechanism is used for driving one end of the dielectric measurement module to move in the trunk; the dielectric measurement module is used for acquiring moisture distribution information inside the trunk. The application provides a trunk moisture distribution monitoring devices, moisture and the distribution that can real-time detection trunk xylem heartwood and boundary wood can acquire the moisture difference of xylem different positions on the trunk horizontal direction simultaneously to improve the accuracy of trunk moisture distribution monitoring.
Drawings
In order to more clearly illustrate the technical solutions in the present application or the prior art, the drawings needed for the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural plan view of a trunk moisture distribution monitoring device provided in an embodiment of the present application;
FIG. 2 is a schematic structural top view of a control box provided in an embodiment of the present application;
FIG. 3 is a schematic diagram illustrating the overall installation of a trunk moisture distribution monitoring device provided by an embodiment of the present application;
fig. 4 is a schematic flow chart of a trunk moisture distribution monitoring method provided by an embodiment of the present application;
reference numerals:
100-trunk moisture distribution monitoring device;
110-a box body; 111-a conveying mechanism; 112-a dielectric measurement module; 113-a control box; 114-control box cover; 115-a control circuit; 116-a battery pack; clamp-117;
1110-a stepper motor; 1111-a coupling; 1112-a slider; 1113-screw; 1114-optical axis; 1115-a stepper motor base; 1116-an optical axis support; 1117-limit switch;
1120-a sensor; 1121-sensor probe; 1122-a transmission line;
120-tree trunk; 130-plastic tubes.
Detailed Description
To make the purpose, technical solutions and advantages of the present application clearer, the technical solutions in the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to fig. 1 to 3, an embodiment of the present application provides a trunk moisture distribution monitoring device 100, which includes a box 110; a conveying mechanism 111 and a dielectric measurement module 112 are arranged in the box body 110; the conveying mechanism 111 is connected with the dielectric measurement module 112; the conveying mechanism 111 is used for driving one end of the dielectric measurement module 112 to move inside the trunk 120; the dielectric measurement module 112 is used to obtain moisture distribution information inside the trunk 120.
It should be noted that the inside of the trunk 120 is pre-installed with a plastic tube 130 (e.g., PC tube, PVC tube) for the dielectric measurement module 112 to move inside the trunk 120, wherein the plastic tube 130 does not affect the normal growth of the tree. For example, a measuring location of the trunk 120 is selected, a diameter is measured, an appropriate length of the plastic tube 130 is cut according to the diameter, and then a hole is punched in the north-south direction of the trunk 120, and the plastic tube 130 is placed in the hole. The length of the plastic tube 130 can be determined according to the diameter of the tree, and is greater than the diameter of the tree, and the trunk 120 generally refers to a tree with a diameter of more than 10 cm.
After installing the plastic tube 130 inside the trunk 120, the conveying mechanism 111 inside the box 110 may drive one end of the dielectric measurement module 112 to move on the plastic tube 130 inside the trunk 120, then obtain measurement information (e.g., voltage information) of the dielectric measurement module 112, and determine moisture distribution information inside the trunk 120 based on the correlation information between the measurement information and the moisture content of the trunk 120. It will be appreciated that when one end of the dielectric measurement module 112 moves within the plastic tube 130 inside the trunk 120, the outer electromagnetic field generated by the dielectric measurement module 112 forms a capacitance with the trunk 120 under test, the capacitance being proportional to the moisture content of the trunk 120. Therefore, after obtaining the moisture calibration equation of the trunk 120, the change of the capacitance impedance is detected in real time, and the change is reflected by the measured voltage value, so that the moisture of the trunk 120 can be indirectly obtained.
This application embodiment can drive dielectric measurement module 112's one end through conveying mechanism 111 and remove at the inside plastic tubing 130 of trunk 120, can real-time detection trunk 120 xylem core wood and the moisture and the distribution of sapwood, can acquire the moisture difference of the different positions of xylem on the trunk 120 horizontal direction simultaneously to improve the accuracy of trunk 120 moisture distribution monitoring.
On the basis of the above embodiment, the dielectric measurement module 112 includes a sensor 1120 and a sensor probe 1121; the sensor 1120 and the sensor probe 1121 are connected by a transmission line 1122; the sensor probe 1121 is configured to move inside the trunk 120 to obtain moisture distribution information inside the trunk 120.
Specifically, the dielectric measurement module 112 includes a sensor 1120 and a sensor probe 1121, the sensor 1120 and the sensor probe 1121 are connected by a transmission line 1122, for example, the sensor 1120 and the sensor probe 1121 are connected by a coaxial line, and the coaxial line is externally fixed by a wire pipe. The sensor probe 1121 is used to move within the plastic tube 130 inside the trunk 120 to obtain moisture distribution information inside the trunk 120.
It should be noted that the circuit of the sensor 1120 is composed of two parts, namely a 100MHz oscillator and a capacitance detection circuit, and a digital temperature sensor DS18B20 is built in, and is used for detecting the onboard temperature and correcting the temperature effect of the sensor 1120.
This application embodiment passes through sensor probe 1121 and removes in the inside plastic tubing 130 of trunk 120, can real-time detection trunk 120 xylem core wood and the moisture and the distribution of sapwood, can acquire the moisture difference of the different positions of xylem on the trunk 120 horizontal direction simultaneously to improve the accuracy of trunk 120 moisture distribution monitoring.
On the basis of the above embodiment, the sensor probe 1121 includes a first metal ring for serving as an emitter and a second metal ring for serving as a receiver; the first metal ring and the second metal ring are matched to form a closed-loop electromagnetic field.
Specifically, the sensor probe 1121 is composed of two identical metal rings, and a preset spacing distance is provided between the metal rings, for example, electrodes of the sensor probe 1121 are composed of two brass rings with an outer diameter of 9.5mm, a wall thickness of 0.5mm, and a width of 2mm, as electrodes of the sensor 1120, a distance between the copper rings is 2mm, a total length of the sensor probe 1121 is 6mm, and one of the two copper rings is used as an emitter and the other is used as a receiver, so as to form a closed-loop electromagnetic field.
It should be noted that the total moving distance, the sampling interval and the sampling distance of the sensor 1120 need to be preset, where the total moving distance does not exceed the total moving distance of the sensor 1120, the sampling interval distance is not less than 10mm, and the radiation range of the probe electrode needs to be greater than the total length of the sensor probe 1121, for example, if the total length of the sensor probe 1121 is 6mm, the radiation range of the probe electrode needs to be greater than 6mm, and if the sampling interval distance is too small, the magnetic field overlapping range of adjacent measurement points is large, so that the measurement value is an average value of two points, and the measurement accuracy is reduced.
It should be noted that the principle of measuring the moisture distribution of the trunk 120 is as follows: under the excitation of 1120100MHz high-frequency signals of the sensor, an outer edge electromagnetic field generated between the two electrodes and the trunk 120 to be detected form a capacitor, and the capacitance value of the capacitor is in direct proportion to the water content of the trunk 120. Therefore, after obtaining the moisture calibration equation of the trunk 120, the change of the capacitance impedance is detected in real time, and the change is reflected by the measured voltage value, so that the moisture of the trunk 120 can be indirectly obtained.
This application embodiment can real-time detection trunk 120 xylem core wood and the moisture and the distribution of boundary wood through two becket in the sensor probe 1121, can acquire the moisture difference of the different positions of xylem on the trunk 120 horizontal direction simultaneously to improve the accuracy of trunk 120 moisture distribution monitoring.
On the basis of the above embodiment, the conveying mechanism 111 includes a stepping motor 1110, a coupling 1111, a slider 1112, a lead screw 1113, and a plurality of optical axes 1114; the stepping motor 1110 is connected with the lead screw 1113 through the coupler 1111;
the lead screw 1113 and the plurality of optical axes 1114 pass through the sliding block 1112; the lead screw 1113 is used for driving the sliding block 1112 to move; the slider 1112 is connected to the dielectric measurement module 112, and is configured to move the dielectric measurement module 112.
Specifically, the conveying mechanism 111 includes a stepping motor 1110, a coupling 1111, a slider 1112, a lead screw 1113, and a plurality of optical axes 1114; wherein, the stepping motor 1110 is connected with a screw 1113 through a coupler 1111; the lead screw 1113 and a plurality of optical axes 1114 pass through the sliding block 1112; the lead screw 1113 is used for driving the slider 1112 to move; the slider 1112 is connected to the dielectric measurement module 112 for moving the dielectric measurement module 112.
This application embodiment can drive dielectric measurement module 112's one end through conveying mechanism 111 and remove at the inside plastic tubing 130 of trunk 120, can real-time detection trunk 120 xylem core wood and the moisture and the distribution of sapwood, can acquire the moisture difference of the different positions of xylem on the trunk 120 horizontal direction simultaneously to improve the accuracy of trunk 120 moisture distribution monitoring.
On the basis of the above embodiment, the conveying mechanism 111 further includes a stepping motor base 1115, an optical axis support 1116, and a limit switch 1117 disposed on the optical axis support 1116; the stepping motor base 1115 is used for fixing the stepping motor 1110; the optical axis support 1116 is used to fix a plurality of the optical axes 1114; the limit switch 1117 is used for limiting the slide block 1112.
Specifically, the conveying mechanism 111 further includes a stepping motor base 1115, an optical axis support 1116, and a limit switch 1117 provided on the optical axis support 1116; the stepping motor base 1115 is used for fixing the stepping motor 1110; the optical axis support 1116 is for fixing a plurality of optical axes 1114; the limit switch 1117 is used for limiting the slider 1112.
The working flow of the trunk 120 moisture distribution monitoring device 100 is as follows: the measurement position of the trunk 120 is selected, the diameter is measured, the appropriate length of the plastic tube 130 is cut according to the diameter, then the hole is punched in the north-south direction of the trunk 120, and the plastic tube 130 is placed into the hole. The control box cover 114 and the control box 113 are then fixed on the trunk 120 by the clamp 117, and the sensor probe 1121 can enter the plastic tube 130, the battery pack 116 or the direct current power supply in the control box 113 supplies power to the control circuit 115, and the control circuit 115 controls the operation of the whole device and data acquisition and storage. When the device starts to work, the sampling time interval, the total moving distance and the interval distance are set by a program, and the sensor 1120 needs to be reset, the stepping motor 1110 drives the lead screw 1113 to rotate forward together, the sliding block 1112 is driven to drive the sensor 1120 to move towards one side close to the trunk 120, when the sliding block 1112 touches the limit switch 1117, the movement is stopped, and the sensor 1120 is reset. After the sensor 1120 is reset, the stepping motor 1110 rotates reversely, the sensor 1120 moves in the reverse direction for the total distance set by the program, after the specified position is reached, the stepping motor 1110 rotates forwards, the sensor 1120 moves at the specified movement interval, and the sensor 1120 moves for a while and pauses for two seconds, so that the sensor probe 1121 can complete the collection and storage of the moisture data of the trunk 120. When the sensor 1120 finishes moving the total distance, the moisture distribution of the trunk 120 is collected, the sensor 1120 returns to the initial position, and then the whole system enters a low power consumption sleep state to wait for the alarm clock of the time interval measured by the control circuit 115 to wake up the system for the next collection.
The embodiment of the present application can drive the sensor probe 1121 in the dielectric measurement module 112 through the conveying mechanism 111 to move in the plastic pipe 130 inside the trunk 120, so that the moisture and the distribution of the core wood and the edge wood of the trunk 120 can be detected in real time, and the moisture difference of different positions of the wood in the horizontal direction of the trunk 120 can be obtained, thereby improving the accuracy of monitoring the moisture distribution of the trunk 120.
On the basis of the above embodiment, the box body 110 includes a control box body 113 and a control box cover 114 connected to the control box body 113; the same sides of the control box body 113 and the control box cover 114 are respectively provided with a clamp 117; the clamp 117 is used to secure the box 110 to the trunk 120.
Specifically, the case 110 includes a control case 113 and a control case cover 114 connected to the control case 113; the control box 113 and the control box cover 114 are respectively provided with a clamp 117 at one side close to the trunk 120; the clamp 117 is used to fix the box body 110 to the trunk 120, that is, to fix the control box body 113 and the control box cover 114 to the trunk 120, respectively.
This application embodiment fixes box 110 on trunk 120 through anchor clamps 117, can improve trunk 120 moisture distribution monitoring efficiency.
On the basis of the above embodiment, the box body 110 further includes a control circuit 115; the control circuit 115 comprises a motor driving module and an acquisition module; the motor driving module is used for driving the stepping motor 1110; the acquisition module is used for acquiring the measurement information of the dielectric measurement module 112.
Specifically, the box body 110 further comprises a control circuit 115, and the control circuit 115 is used for data acquisition and storage; the control circuit 115 includes a motor driving module and an acquisition module; the motor driving module is used for driving the stepping motor 1110, for example, the motor driving module realizes accurate driving of the stepping motor 1110, and can accurately move to a millimeter level. The collection module is used to collect the measurement information of the dielectric measurement module 112, for example, the collection module may be an ADC collection module for collecting the moisture distribution of the trunk 120 measured by the sensor 1120.
In addition, the control circuit 115 further includes a main control module, a bluetooth module, a power management module, and the like, wherein the main control module is configured to control each module; the Bluetooth module is used for receiving data of the mobile phone and the upper computer; the power management module is used for voltage reduction, voltage stabilization and power supply of the control circuit 115, calculation of battery capacity, switching of the battery pack 116 and the like.
This application embodiment controls the motion of conveying mechanism 111 through control module to make conveying mechanism 111 drive sensor probe 1121 remove at the inside plastic tubing 130 of trunk 120, can real-time detection trunk 120 xylem core wood and the moisture and the distribution of sapwood, can acquire the moisture difference of the different positions of xylem on the trunk 120 horizontal direction simultaneously, thereby improve the accuracy of trunk 120 moisture distribution monitoring.
On the basis of the above embodiment, the box body 110 further includes a battery pack 116; the battery pack 116 is used to supply power to the control circuit 115.
It should be noted that the box 110 further includes a battery pack 116, and the battery pack 116 includes two lithium batteries for switching power supply to the control circuit 115 in the case of no power supply.
Specifically, the control circuit 115 is provided with a battery interface and a dc power interface, and can be directly powered or powered by the battery pack 116 in the field without power. The battery pack 116 is composed of two battery packs 116, one battery being a power supply lithium battery pack and the other battery being a backup lithium battery pack. Before the electric quantity of one group of lithium battery pack is exhausted, the standby lithium battery pack and the lithium battery pack are converted under the control of the power management module of the control circuit 115, and the measurement time of the whole endurance system is prolonged.
This application embodiment is under the no power condition, adopts the electromagnetism group to supply power to control circuit 115, based on this, increases whole time of endurance system's measuring time to improve trunk 120 moisture distribution monitoring efficiency.
On the basis of the above embodiment, the box body 110 is provided with an opening for the sensor probe 1121 to enter and exit.
Specifically, the box body 110 is a waterproof product, and an opening for the sensor probe 1121 to enter and exit is formed on a side of the box body 110 close to the trunk 120, for example, a square hole or a round hole is formed, so as to facilitate the movement of the sensor probe 1121. Based on this, the trunk 120 moisture distribution monitoring efficiency can be improved.
On the basis of the foregoing embodiments, as shown in fig. 4, an embodiment of the present invention provides a trunk moisture distribution monitoring method, which is applied to the trunk moisture distribution monitoring apparatus 100 described above, and includes:
200, controlling the sensor probe to move in the trunk according to the sampling information so as to acquire voltage information acquired by the sensor probe;
and 300, determining the moisture distribution information inside the trunk according to the correlation information of the voltage information and the trunk water content.
Specifically, the sampling information of the sensor probe 1121, such as total sampling range, sampling interval, sampling time, and the like, is preset, then the sensor probe 1121 is controlled to move inside the trunk 120 based on the sampling information to obtain the voltage information acquired by the sensor probe 1121, and finally the water distribution information inside the data is determined according to the correlation information between the voltage information and the water content of the trunk 120.
It should be noted that the principle of measuring the moisture distribution of the trunk 120 is as follows: under the excitation of the 1120100MHz high-frequency signal of the sensor, the outer edge electromagnetic field generated between the two electrodes and the trunk 120 to be measured form a capacitor, and the capacitance value is in direct proportion to the water content of the trunk 120. Therefore, after obtaining the moisture calibration equation of the trunk 120, the change of the capacitance impedance is detected in real time, and the change is reflected by the measured voltage value, so that the moisture of the trunk 120 can be indirectly obtained.
In one particular embodiment, the trunk 120 moisture profile monitoring includes the steps of:
(1) The trunk 120 is perforated and the plastic tube 130 is packed inside the trunk 120;
(2) Fixing the control box body 113 and the control box cover 114 on the tree by the clamp 117, and enabling the sensor probe 1121 to be located in the plastic tube 130;
(3) The total sampling range, the sampling interval and the sampling time are set by a bluetooth module of the control circuit 115, and the conveying mechanism 111 is driven to realize the movement measurement of the sensor probe 1121 in the plastic tube 130;
(4) Collecting voltage information measured by the sensor 1120 through an ADC collecting module of the control circuit 115; the field effect of the outer edge of the double-ring electrode of the sensor probe 1121 forms a capacitance with the trunk 120, and the voltage value of the capacitance is monitored to reflect the change of the capacitance impedance.
(5) And calculating the water content of different positions of the trunk 120 based on the relation curve of the water content of the trunk 120 and the voltage information, so as to obtain the water distribution of the trunk 120.
The embodiment of the application provides a moisture distribution monitoring of the trunk 120, by determining the sampling information of the sensor probe 1121, the sensor probe 1121 is controlled to move inside the trunk 120 according to the sampling information to acquire the voltage information acquired by the sensor probe 1121, and finally, the moisture distribution information inside the trunk 120 is determined according to the correlation information between the voltage information and the water content of the trunk 120.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.
Claims (10)
1. A trunk moisture distribution monitoring device is characterized by comprising a box body; a conveying mechanism and a dielectric measurement module are arranged in the box body; the conveying mechanism is connected with the dielectric measurement module;
the conveying mechanism is used for driving one end of the dielectric measurement module to move in the trunk;
the dielectric measurement module is used for acquiring moisture distribution information inside the trunk.
2. The trunk moisture distribution monitoring device of claim 1, wherein the dielectric measurement module comprises a sensor and a sensor probe;
the sensor and the sensor probe are connected through a transmission line;
the sensor probe is used for moving inside the trunk so as to acquire moisture distribution information inside the trunk.
3. The trunk moisture distribution monitoring device of claim 2, wherein the sensor probe comprises a first metal ring for acting as an emitter and a second metal ring for acting as a receiver;
the first metal ring and the second metal ring are matched to form a closed-loop electromagnetic field.
4. The trunk moisture distribution monitoring device of claim 1, wherein the conveying mechanism comprises a stepper motor, a coupler, a slider, a lead screw, and a plurality of optical axes;
the stepping motor is connected with the lead screw through the coupler;
the lead screw and the optical axes penetrate through the sliding block; the lead screw is used for driving the sliding block to move;
the slider is connected with the dielectric measurement module and used for driving the dielectric measurement module to move.
5. The trunk moisture distribution monitoring device according to claim 4, wherein the conveying mechanism further comprises a stepper motor base, an optical axis support, and a limit switch provided on the optical axis support;
the stepping motor base is used for fixing the stepping motor;
the optical axis supporting member is used for fixing a plurality of optical axes;
the limit switch is used for limiting the sliding block.
6. The trunk moisture distribution monitoring device of claim 1, wherein the box comprises a control box and a control box cover connected to the control box;
the same sides of the control box body and the control box cover are respectively provided with a clamp; the clamp is used for fixing the box body on the trunk.
7. The trunk moisture distribution monitoring device of claim 4, wherein the box further comprises a control circuit; the control circuit comprises a motor driving module and an acquisition module;
the motor driving module is used for driving the stepping motor;
the acquisition module is used for acquiring the measurement information of the dielectric measurement module.
8. The trunk moisture distribution monitoring device of claim 7, wherein the box further comprises a battery pack; the battery pack is used for supplying power to the control circuit.
9. The trunk moisture distribution monitoring device of claim 2, wherein the housing is provided with an opening for the sensor probe to enter and exit.
10. A trunk moisture distribution monitoring method applied to the trunk moisture distribution monitoring device according to any one of claims 1 to 9, comprising:
determining sampling information of a sensor probe;
controlling the sensor probe to move in the trunk according to the sampling information so as to acquire voltage information acquired by the sensor probe;
and determining the moisture distribution information inside the trunk according to the correlation information of the voltage information and the water content of the trunk.
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| CN202211117931.0A CN115494125A (en) | 2022-09-14 | 2022-09-14 | Trunk moisture distribution monitoring device and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN118243561A (en) * | 2024-05-30 | 2024-06-25 | 福满门家居工贸江苏有限公司 | Timber moisture content detection device |
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