Device and method for measuring water content of litter

Abstract

The invention discloses a device and a method for measuring the water content of litters, and relates to the technical field of detection systems for forest steppe fire danger factors. The device comprises a microwave detection unit which is used for acquiring moisture content data of a detected medium through a microwave moisture content sensor; and the calculation unit is used for carrying out data acquisition processing and filtering calculation through environment compensation according to the moisture content data to obtain final moisture content data of the litter. The device is full-automatic detection equipment, is unattended, can work outdoors for a long time, and can detect the water content of the litter all day long.

Description

Technical Field

[0001] The invention discloses a device and method for measuring the moisture content of litter, and relates to the technical field of detection systems for forest and grassland fire risk factors. Background Art

[0002] Litter is an important component of terrestrial ecosystems, and its accumulation and decomposition are the central links in the biogeochemical cycle of elements in ecosystems. Accurate measurement of the moisture content of litter is crucial for assessing forest fire risks, because dry litter is more likely to burn, increasing the possibility and danger of fire. The litter layer has a complex and important regulatory effect on plant community structure and ecosystem processes, and also plays an important ecological function in soil and water conservation and water conservation.

[0003] The occurrence of forest and grassland fire risk is closely related to the moisture content of litter, which is an important influencing factor of forest and grassland fire risk. The flammability of litter is divided into two factors: one is the surface moisture content. The dryness of the surface litter determines whether the litter will be ignited; the second is the overall moisture content. The overall moisture content of the litter determines whether the combustion spreads and the intensity of combustion. Accurate real-time monitoring of litter moisture content data can not only provide a reference for fire fighting, but also determine the rescue management method of the fire according to the moisture content of the litter. However, most of the current methods for judging the moisture content of litter are analyzed by drying artificial fallen leaves. In the actual measurement environment, the sampling focuses on the surface or the bottom layer, and the moisture content of the combustibles obtained is quite different, which cannot accurately reflect the correct situation. The collection process is cumbersome and cannot be detected in real time, so the judgment of forest and grassland fire risk cannot be accurately refined.

[0004] Litter moisture content is one of the key indicators for assessing forest and grassland fire risk. Its main functions include:

[0005] (1) Fire risk assessment: The moisture content of litter directly affects its flammability. Dry litter is more likely to burn, so monitoring the moisture content of litter is helpful in assessing the fire risk of forests and grasslands.

[0006] (2) Early warning monitoring: By real-time monitoring of the moisture content of litter, fire hazards can be discovered in a timely manner, early warning can be achieved, and appropriate fire prevention measures can be taken.

[0007] (3) Fire prevention: Understanding the changing trend of moisture content of litter can help forest managers formulate scientific fire prevention strategies, such as reasonably controlling the amount of combustible materials under the forest and reducing the probability of fire.

[0008] (4) Fire risk classification: The moisture content of litter is one of the important parameters for classifying fire risk levels. Litters with different moisture contents correspond to different fire risk levels, which helps to carry out more refined fire risk management.

[0009] (5) Fire emergency response: When a fire occurs, the monitoring data of the moisture content of litter can provide important information for fire fighting and help formulate effective emergency response measures.

[0010] (6) Scientific research: Monitoring data on moisture content of litter is of great significance for studying water cycle and carbon storage in forest ecosystems, and helps to gain a deeper understanding of the functions and health status of forest-grassland ecosystems.

[0011] Therefore, monitoring of moisture content of litter plays an important role in the prevention, early warning and emergency management of forest and grassland fire risks, and is an indispensable part of forest and grassland fire risk management. Summary of the invention

[0012] In view of the problems of the prior art, the present invention provides a device and method for measuring the moisture content of litter, and the technical solution adopted is:

[0013] In a first aspect, a device for measuring moisture content of litter is provided, the device comprising:

[0014] A microwave detection unit, used to obtain the moisture content data of the measured medium through a microwave moisture content sensor;

[0015] The calculation unit is used to perform data collection processing and filtering calculation according to the moisture content data through environmental compensation to obtain the final moisture content data of the litter.

[0016] In some implementations, the apparatus further includes:

[0017] The control unit is used to control the microwave detection unit and the calculation unit, and send the sensor detection unit to perform data detection, and transmit the detected data to the external controller through the data line.

[0018] In some implementations, a power subunit is provided in the control unit for connecting an external power source to the microwave detection unit. :

[0019] In some implementations, the device further includes a mechanical unit, which includes a movement subunit configured to move downward after a detection time has elapsed to detect the moisture content of the fallen leaves.

[0020] In a second aspect, an embodiment of the present invention provides a method for measuring the moisture content of litter, the method comprising:

[0021] S1, obtaining the moisture content data of the measured medium through a microwave moisture content sensor;

[0022] S2, based on the moisture content data, data collection and processing and filtering calculation are performed through environmental compensation to obtain the final moisture content data of the litter.

[0023] In some implementations, S1 specifically includes:

[0024] S11, based on the transmitted signal of the microwave moisture content sensor, the signal energy is compared by receiving the reflected signal.

[0025] S12 obtains the moisture content data of the measured medium through a moisture calibration table according to the structure of the signal energy comparison and in combination with the medium information.

[0026] In a third aspect, an embodiment of the present invention provides an electronic device, comprising a memory and a processor, wherein the memory is used to store one or more computer instructions, wherein when the one or more computer instructions are executed by the processor, the method described in the second aspect above is implemented.

[0027] In a fourth aspect, an embodiment of the present invention provides a computer storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, it is used to implement the method described in the second aspect.

[0028] One or more embodiments of the present invention can bring at least the following beneficial effects:

[0029] The method of the present invention solves the problem that the moisture content of litter is inaccurate and cannot be detected in real time at the current stage, and can provide accurate moisture content of litter for the detection of forest and grassland fire risk factors, thereby solving the following problems:

[0030] Fire risk assessment: By monitoring the moisture content of litter, the fire risk of a particular area can be assessed. Low moisture content means that the litter is more flammable, increasing the likelihood of fire.

[0031] Early warning system: The moisture content parameters can be integrated into the early warning system. When the moisture content drops to a certain threshold, the system can automatically issue an alarm to remind relevant personnel to take preventive measures.

[0032] Fire prevention strategies: Understanding litter moisture content can help develop effective fire prevention strategies, such as forest management and litter removal during high-risk periods.

[0033] Fire hazard classification: Moisture content parameters help determine the fire hazard levels of different areas so that targeted fire prevention measures can be implemented.

[0034] Fire emergency response: When a fire occurs, litter moisture content information can help emergency response teams assess the speed and direction of fire spread and optimize the allocation of firefighting resources.

[0035] Resource allocation: Based on the monitoring results of litter moisture content, fire prevention resources can be allocated more reasonably, such as adding monitoring and fire-fighting facilities in high-risk areas.

[0036] Scientific Research and Model Development: Moisture content data can be used for scientific research to help researchers better understand the water dynamics and fire behavior of forest ecosystems and develop more accurate fire prediction models.

[0037] Ecosystem management: Long-term monitoring of litter moisture content helps assess the health of forest ecosystems and provide data support for ecosystem management and biodiversity conservation.

[0038] Rulemaking and Compliance: Moisture content data can support rulemakers in developing science-based fire prevention rules and regulations to ensure sustainable development of forest areas. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0040] Figure 1 is a structural schematic diagram of a device for measuring moisture content of litter provided by an embodiment of the present invention;

[0041] Figure 2 is a structural schematic diagram of a mechanical unit provided by an embodiment of the present invention;

[0042] Figure 3 It is another structural schematic diagram of the mechanical unit provided in an embodiment of the present invention.

[0043] Reference numerals:

[0044] Calculation unit, control unit————1;

[0045] Microwave detection unit————2;

[0046] Microwave receiving unit————3;

[0047] Mechanical unit————4. DETAILED DESCRIPTION

[0048] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. The components of the embodiments of the present invention generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents the selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present invention.

[0049] Embodiment 1:

[0050] Figure 1 A schematic diagram of the structure of a device for measuring the moisture content of litter is shown, the device comprising:

[0051] A microwave detection unit, used to obtain the moisture content data of the measured medium through a microwave moisture content sensor;

[0052] The calculation unit is used to perform data collection processing and filtering calculation according to the moisture content data through environmental compensation to obtain the final moisture content data of the litter.

[0053] First, according to the microwave detection unit, the interaction between microwave signals and water molecules is mainly utilized. When microwave signals encounter water molecules, the water molecules will absorb part of the energy and also reflect part of the energy back to the sensor. This characteristic of water molecules is related to their dielectric constant at microwave frequency, which changes with the change of moisture content in the medium. By measuring the energy change of the microwave signal, the moisture content in the medium can be determined, thereby obtaining the measurement result of humidity. Specifically, the microwave moisture content sensor transmits a signal of a specific modulation frequency, then receives the reflected or transmitted signal, compares the energy difference between the two signals, combines the temperature of the medium and other information, and determines the moisture content of the measured medium through a moisture calibration table.

[0054] Then, the microwave data is received by the computing unit, and the detection data is subjected to temperature compensation, etc., and the detection data after temperature compensation is subjected to environmental compensation processing. After multiple data collection processing and filtering calculations, the final moisture content data of the litter is obtained.

[0055] Then, the control unit is used to control the microwave detection unit and the calculation unit, and send the detection data detected by the sensor detection unit to the external controller through wired mode. The power subunit is contained inside to process the external power supply to the microwave detection unit, forming a complete detection module.

[0056] Next, use the mechanical unit, which is divided into two types, one with a moving subunit (such as Figure 2 ), the probe is integrated with the transmitter and receiver. When the detection time comes, the motion subunit will move downward to detect the moisture content of the fallen leaves. The second is to separate the transmitting probe and the receiving probe (such as Figure 3 ), no motion subunit is needed, and the moisture content of the fallen leaves between the transmitting probe and the receiving probe can be detected regularly.

[0057] Embodiment 2:

[0058] This embodiment provides a method for measuring the moisture content of litter, the method comprising:

[0059] S1, obtaining the moisture content data of the measured medium through a microwave moisture content sensor;

[0060] S2, based on the moisture content data, data collection and processing and filtering calculation are performed through environmental compensation to obtain the final moisture content data of the litter.

[0061] Further, S1 specifically includes:

[0062] S11, based on the transmitted signal of the microwave moisture content sensor, the signal energy is compared by receiving the reflected signal.

[0063] S12 obtains the moisture content data of the measured medium through a moisture calibration table according to the structure of the signal energy comparison and in combination with the medium information.

[0064] Embodiment three:

[0065] This embodiment further provides an electronic device, including a memory and a processor, wherein the memory is used to store one or more computer instructions, wherein the one or more computer instructions implement the method of embodiment 1 when executed by the processor;

[0066] In practical applications, the processor can be an application specific integrated circuit (ASIC), a digital signal processor (DSP), a digital signal processing device (DSPD), a programmable logic device (PLD), a field programmable gate array (FPGA), a controller, a microcontroller unit (MCU), a microprocessor or other electronic components to execute the methods in the above embodiments.

[0067] The method implemented in this embodiment includes:

[0068] S1, obtaining the moisture content data of the measured medium through a microwave moisture content sensor;

[0069] S2, based on the moisture content data, data collection and processing and filtering calculation are performed through environmental compensation to obtain the final moisture content data of the litter.

[0070] Further, S1 specifically includes:

[0071] S11, based on the transmitted signal of the microwave moisture content sensor, the signal energy is compared by receiving the reflected signal.

[0072] S12 obtains the moisture content data of the measured medium through a moisture calibration table according to the structure of the signal energy comparison and in combination with the medium information.

[0073] Embodiment 4:

[0074] This embodiment further provides a computer storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by one or more processors, the method of the first embodiment is implemented;

[0075] Among them, the computer-readable storage medium can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (Static Random Access Memory, referred to as SRAM), electrically erasable programmable read-only memory (Electrically Erasable Programmable Read-Only Memory, referred to as EEPROM), erasable programmable read-only memory (Erasable Programmable Read-Only Memory, referred to as EPROM), programmable read-only memory (Programmable Read-Only Memory, referred to as PROM), read-only memory (Read-Only Memory, referred to as ROM), magnetic storage, flash memory, magnetic disk or optical disk.

[0076] The method implemented in this embodiment includes:

[0077] S1, obtaining the moisture content data of the measured medium through a microwave moisture content sensor;

[0078] S2, based on the moisture content data, data collection and processing and filtering calculation are performed through environmental compensation to obtain the final moisture content data of the litter.

[0079] Further, S1 specifically includes:

[0080] S11, based on the transmitted signal of the microwave moisture content sensor, the signal energy is compared by receiving the reflected signal.

[0081] S12 obtains the moisture content data of the measured medium through a moisture calibration table according to the structure of the signal energy comparison and in combination with the medium information.

[0082] In the several embodiments provided in the embodiments of the present invention, it should be understood that the disclosed system and method can also be implemented in other ways. The system and method embodiments described above are merely illustrative.

[0083] It should be noted that, in this article, the terms "first", "second", etc. in the specification and claims of this application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. The terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0084] Although the embodiments disclosed in the present invention are as above, the above contents are only embodiments adopted for facilitating the understanding of the present invention and are not intended to limit the present invention. Any technician in the technical field to which the present invention belongs can make any modifications and changes in the form and details of the implementation without departing from the spirit and scope disclosed in the present invention, but the patent protection scope of the present invention shall still be subject to the scope defined in the attached claims.

Claims

1. A device for measuring the moisture content of litter, characterized in that: The device comprises: A microwave detection unit, used for obtaining the moisture content data of the measured medium through a microwave moisture content sensor; The calculation unit is used to perform data collection processing and filtering calculation according to the moisture content data through environmental compensation to obtain the final moisture content data of the litter.

2. The device according to claim 1, characterized in that The device also includes: The control unit is used to control the microwave detection unit and the calculation unit, and send the sensor detection unit to perform data detection, and transmit the detected data to the external controller through the data line.

3. The device according to claim 2, characterized in that The control unit is provided with a power subunit for connecting an external power source to the microwave detection unit.

4. The device according to claim 3, characterized in that The device also includes a mechanical unit, which includes a moving subunit, which is used to move downward after the detection time is reached to detect the moisture content of the fallen leaves.

5. A method for measuring the moisture content of litter, characterized in that: The method comprises: S1, obtaining the moisture content data of the measured medium through a microwave moisture content sensor; S2, based on the moisture content data, data collection and processing and filtering calculation are performed through environmental compensation to obtain the final moisture content data of the litter.

6. The method according to claim 5, characterized in that S1 specifically includes: S11, based on the transmitted signal of the microwave moisture content sensor, the signal energy is compared by receiving the reflected signal. S12 obtains the moisture content data of the measured medium through a moisture calibration table according to the structure of the signal energy comparison and in combination with the medium information.

7. An electronic device, characterized in that: It comprises a memory and a processor, wherein the memory is used to store one or more computer instructions, wherein the one or more computer instructions, when executed by the processor, implement the method as described in any one of claims 5-6.

8. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, it is used to implement the method as described in any one of claims 5-6 above.

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