System and method for detecting moisture content of wooden cultural relics based on immovable cultural relics

Abstract

The present invention discloses a moisture content detection system and method for wooden cultural relics based on immovable cultural relics, and relates to the technical field of moisture content detection; the target cultural relics are monitored in real time by means of temperature monitoring, and an abnormality judgment is made on the target cultural relics based on the temperature information to ensure that the change in the state of the cultural relics can be discovered in time; if the result of the abnormality judgment is abnormal, the moisture content of the target cultural relics is detected by microwaves; this rapid response mechanism helps to reduce the risk of damage to cultural relics caused by delays. By obtaining the material and thickness of the surface coating of the target area of ​​the target cultural relics, the microwave detection signal is corrected, and the influence of the coating on the detection signal is eliminated, thereby improving the accuracy of microwave detection.

Description

Technical Field

[0001] The invention relates to the technical field of moisture content detection, and in particular to a system and method for detecting moisture content of wooden cultural relics based on immovable cultural relics. Background Art

[0002] As an important part of human cultural heritage, immovable cultural relics carry rich historical information and unique artistic value. Among them, wooden cultural relics, with their unique materials and craftsmanship, have become an important member of immovable cultural relics. However, due to the long-term exposure of wooden cultural relics to the natural environment, their moisture content will be affected by many factors. Too high or too low moisture content may have an adverse effect on the preservation state and service life of wooden cultural relics. Therefore, accurate detection of the moisture content of wooden cultural relics is very important for the protection of cultural relics.

[0003] The application of non-destructive testing technology has received increasing attention for the detection of moisture content of wooden cultural relics. Common non-destructive testing methods include resistance method, microwave method and radiation method. Although these methods can meet the needs of detecting the moisture content of cultural relics to a certain extent, they currently require periodic testing by manual labor. This method consumes a lot of manpower and time, and the detection cycle is long. If the moisture content of cultural relics exceeds the safe range due to changes in environmental humidity, temperature and other factors, it cannot be discovered and protected in time, which will seriously affect the life of the cultural relics. In addition, in order to protect wooden cultural relics, one or more layers of protective coating will be applied to the surface of the cultural relics. These coatings will affect the detection accuracy of existing non-destructive testing technologies, thereby reducing the accuracy of the measurement results. Summary of the invention

[0004] The purpose of the present invention is to solve the problems of untimely detection and low accuracy mentioned in the above background technology, and to propose a moisture content detection system and method for wooden cultural relics based on immovable cultural relics.

[0005] The first aspect of the present invention provides a method for detecting moisture content of wooden cultural relics based on immovable cultural relics, the method comprising:

[0006] Monitor the target area of ​​the target cultural relic in real time and obtain temperature information of the target area;

[0007] According to the temperature information, an abnormality judgment is performed on the target cultural relic; the result of the abnormality judgment includes normal and abnormal;

[0008] If the result of the first abnormality judgment is abnormal, obtaining the material and thickness of the surface coating of the target area;

[0009] transmitting a target microwave to the target area, and receiving a microwave attenuation signal after the target microwave penetrates the target area;

[0010] Obtaining a target moisture content according to the microwave attenuation signal and the material and thickness of the surface coating of the target area;

[0011] A secondary abnormality judgment is performed on the target cultural relic according to the target moisture content.

[0012] Optionally, the temperature information includes an infrared thermal imaging image; and judging an abnormality of the target cultural relic based on the temperature information includes:

[0013] Using the infrared thermal imaging image as an input of a pre-trained neural network model to obtain a first moisture content of the target area;

[0014] If the first moisture content exceeds a first preset range, the target cultural relic is determined to be abnormal; otherwise, the target cultural relic is determined to be normal.

[0015] Optionally, obtaining the material and thickness of the surface coating of the target area includes:

[0016] Query maintenance records to extract the material type of the surface coating of the target area;

[0017] Determining the parameters of the target ultrasonic wave according to the material type of the surface coating of the target area; the parameters include the frequency, power and pulse width of the target ultrasonic wave;

[0018] According to the parameters, transmitting target ultrasonic waves to the target area and receiving echo signals;

[0019] The thickness of the surface coating of the target area is determined according to the echo signal.

[0020] Optionally, emitting a target microwave to the target area and receiving a microwave attenuation signal after the target microwave penetrates the target area includes:

[0021] Query the measurement record to obtain the most recent moisture content measurement information of the target area as the original moisture content information;

[0022] Determining the transmission power of the target microwave according to the material and thickness of the surface coating of the target area and the original moisture content information;

[0023] The target microwave is emitted to the target area according to the emission power.

[0024] Optionally, obtaining the target moisture content according to the microwave attenuation signal and the material and thickness of the surface coating of the target area includes:

[0025] Converting the microwave attenuation signal into an electrical signal, and amplifying and filtering the electrical signal to obtain a target signal;

[0026] Calculating the energy attenuation value and phase offset of the target microwave according to the target signal;

[0027] According to the material and thickness of the surface coating of the target area, the energy attenuation value and the phase offset are corrected to obtain a target attenuation value and a target offset;

[0028] The target moisture content is obtained according to the target attenuation value and the target offset.

[0029] The second aspect of the present invention provides a system for detecting moisture content of wooden cultural relics based on immovable cultural relics, the system comprising:

[0030] A temperature information acquisition module is used to monitor a target area of ​​a target cultural relic in real time and acquire temperature information of the target area;

[0031] A primary judgment module, used for performing a primary abnormality judgment on the target cultural relic according to the temperature information; the result of the primary abnormality judgment includes normal and abnormal;

[0032] A coating information acquisition module, for acquiring the material and thickness of the surface coating of the target area if the result of the first abnormality judgment is abnormal;

[0033] A microwave transmitting module, used for transmitting target microwaves to the target area and receiving microwave attenuation signals after the target microwaves penetrate the target area;

[0034] A moisture content detection module, used to obtain a target moisture content according to the microwave attenuation signal and the material and thickness of the surface coating of the target area;

[0035] The secondary judgment module performs secondary abnormality judgment on the target cultural relic according to the target moisture content.

[0036] Optionally, the temperature information includes an infrared thermal imaging image; and the primary judgment module includes:

[0037] A fuzzy moisture content calculation module, used for taking the infrared thermal imaging image as an input of a pre-trained neural network model to obtain a first moisture content of the target area;

[0038] The primary abnormality judgment module is used to judge that the target cultural relic is abnormal if the first moisture content exceeds a first preset range; otherwise, judge that the target cultural relic is normal.

[0039] Optionally, the coating information acquisition module includes:

[0040] A coating material acquisition module is used to query maintenance records and extract the material type of the surface coating of the target area;

[0041] An acoustic wave parameter determination module, used to determine the parameters of the target ultrasonic wave according to the material type of the surface coating of the target area; the parameters include the frequency, power and pulse width of the target ultrasonic wave;

[0042] An acoustic wave signal generating module, used to transmit a target ultrasonic wave to the target area according to the parameters, and receive an echo signal;

[0043] The coating thickness determination module is used to determine the thickness of the coating on the surface of the target area according to the echo signal.

[0044] Optionally, the microwave transmission module includes:

[0045] A moisture content prediction module is used to query the measurement records and obtain the most recent moisture content measurement information of the target area as the original moisture content information;

[0046] A microwave parameter determination module, used to determine the transmission power of the target microwave according to the material and thickness of the surface coating of the target area and the original moisture content information;

[0047] The microwave generating module is used to transmit the target microwave to the target area according to the transmitting power.

[0048] Optionally, the moisture content detection module includes:

[0049] A signal preprocessing module, used for converting the microwave attenuation signal into an electrical signal, and amplifying and filtering the electrical signal to obtain a target signal;

[0050] A variation calculation module, used for calculating the energy attenuation value and phase offset of the target microwave according to the target signal;

[0051] A variation correction module, used to correct the energy attenuation value and the phase offset according to the material and thickness of the surface coating of the target area to obtain a target attenuation value and a target offset;

[0052] The target moisture content determination module is used to obtain the target moisture content according to the target attenuation value and the target offset.

[0053] Beneficial effects of the present invention:

[0054] The present invention proposes a method for detecting moisture content of wooden cultural relics based on immovable cultural relics, the method comprising: real-time monitoring of a target area of ​​a target cultural relic to obtain temperature information of the target area; performing a primary abnormality judgment on the target cultural relic according to the temperature information; the result of the primary abnormality judgment includes normal and abnormal; if the result of the primary abnormality judgment is abnormal, obtaining the material and thickness of a surface coating of the target area; emitting a target microwave to the target area, and receiving a microwave attenuation signal after the target microwave penetrates the target area; obtaining a target moisture content according to the microwave attenuation signal and the material and thickness of the surface coating of the target area; and performing a secondary abnormality judgment on the target cultural relic according to the target moisture content.

[0055] Real-time monitoring of target cultural relics is carried out through temperature monitoring to ensure that changes in the status of the cultural relics can be discovered in time, and accurate moisture content can be obtained through microwave measurement. This rapid response mechanism helps to reduce the risk of damage to cultural relics due to delays. By obtaining the material and thickness of the coating on the surface of the cultural relic, the microwave detection signal is corrected to eliminate the influence of the coating on the detection signal, thereby improving the accuracy of microwave detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] The present invention will be further described below in conjunction with the accompanying drawings.

[0057] Figure 1 A flow chart of a method for detecting moisture content of wooden cultural relics based on immovable cultural relics is provided for an embodiment of the present invention;

[0058] Figure 2 An architectural diagram of a wooden cultural relic moisture content detection system based on immovable cultural relics is provided for an embodiment of the present invention. DETAILED DESCRIPTION

[0059] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0060] The embodiment of the present invention provides a method for detecting the moisture content of wooden cultural relics based on immovable cultural relics. Figure 1 , Figure 1 A flow chart of a method for detecting moisture content of wooden cultural relics based on immovable cultural relics provided by an embodiment of the present invention. The method comprises the following steps:

[0061] S101, monitoring a target area of ​​a target cultural relic in real time to obtain temperature information of the target area.

[0062] S102, performing an abnormality determination on the target cultural relic based on the temperature information.

[0063] S103, if the result of an abnormality judgment is abnormal, the material and thickness of the surface coating of the target area are obtained.

[0064] S104, transmitting a target microwave to a target area, and receiving a microwave attenuation signal after the target microwave penetrates the target area.

[0065] S105, obtaining a target moisture content according to the microwave attenuation signal and the material and thickness of the surface coating of the target area.

[0066] S106, performing a secondary abnormality judgment on the target cultural relic according to the target moisture content.

[0067] The result of an abnormality judgment includes normal and abnormal.

[0068] A method for detecting the moisture content of wooden cultural relics based on immovable cultural relics provided in an embodiment of the present invention performs real-time monitoring of target cultural relics by means of temperature monitoring to ensure that changes in the state of the cultural relics can be discovered in time, and accurate moisture content is obtained by microwave measurement. This rapid response mechanism helps to reduce the risk of damage to cultural relics caused by delays. By obtaining the material and thickness of the coating on the surface of the cultural relic, the microwave detection signal is corrected, eliminating the influence of the coating on the detection signal, thereby improving the accuracy of microwave detection.

[0069] In one implementation, the target cultural relic may have multiple detection areas, and the target area is any one of the multiple detection areas.

[0070] In one implementation, the moisture content of the target cultural relics can be periodically detected by microwave method; or detection can be performed based on abnormal responses.

[0071] In one implementation, a secondary abnormality judgment is performed on the target cultural relic according to the target moisture content. If the target moisture content exceeds the second preset range, the target cultural relic is judged to be abnormal, and an alarm message is sent to the maintenance personnel. The second preset range is determined by the specific wood type and protection requirements of the cultural relic. The second preset range can be given by professional technicians based on their experience in cultural relic protection.

[0072] In one embodiment, the temperature information includes an infrared thermal imaging image; step S102 includes:

[0073] Step 1: Use the infrared thermal imaging image as the input of the pre-trained neural network model to obtain the first moisture content of the target area.

[0074] Step 2: If the first moisture content exceeds the first preset range, the target cultural relic is determined to be abnormal; otherwise, the target cultural relic is determined to be normal.

[0075] In one implementation, the moisture in the wood absorbs thermal radiation, and the presence of moisture affects the temperature distribution on the wood surface. These temperature differences can be captured by an infrared thermal imager and converted into a visual thermal image. After training, the convolutional neural network can quickly and accurately extract the characteristic information about the moisture content in the image, thereby obtaining the moisture content in the wood. Infrared thermal imaging is fast and convenient to measure moisture content, and can continuously detect target cultural relics without causing damage to them, and can realize real-time monitoring of cultural relics. However, its accuracy is low and it is only suitable for early fuzzy detection. When it determines that the target cultural relic is abnormal, it can call a more accurate measurement method in time.

[0076] In one implementation, the first preset range is related to the training results of the neural network model. According to the performance of the neural network in the test set, its error range is obtained. Then, according to the moisture content warning range given by professional technicians, the first preset range is obtained. For example, if the protection requirements for an ancient building clearly state that its moisture content should be between 10% and 15%, and the error range of the neural network model is about ±1%, the first preset range can be set to 11%-14%.

[0077] In one embodiment, step S103 includes:

[0078] Step 1: Query maintenance records and extract the material type of the surface coating of the target area.

[0079] Step 2: Determine the parameters of the target ultrasonic wave according to the material type of the surface coating of the target area.

[0080] Step three: according to the parameters, transmit the target ultrasonic wave to the target area and receive the echo signal.

[0081] Step 4: Determine the thickness of the surface coating in the target area based on the echo signal.

[0082] The parameters include the frequency, power and pulse width of the target ultrasonic wave.

[0083] In one implementation, the thickness of the coating is measured ultrasonically, which can achieve non-contact measurement of the coating without damaging the coating on the surface of the cultural relic.

[0084] In one implementation, by querying maintenance records and extracting the material type of the surface coating in the target area, the physical and chemical properties of the coating can be accurately understood. The parameters of the target ultrasonic wave, including frequency, power and pulse width, can be determined according to the material type of the coating, thereby ensuring that the interaction between the ultrasonic wave and the coating reaches the optimal state and does not cause damage to the cultural relics.

[0085] In one embodiment, step S104 includes:

[0086] Step 1: query the measurement record to obtain the most recent moisture content measurement information of the target area as the original moisture content information.

[0087] Step 2: Determine the transmission power of the target microwave according to the material and thickness of the surface coating of the target area and the original moisture content information.

[0088] Step three, transmitting target microwaves to the target area according to the transmission power.

[0089] In one implementation, the microwave method can achieve non-contact moisture content measurement without causing damage to cultural relics.

[0090] In one implementation, the most recent moisture content measurement information may be the moisture content measured by the most recent microwave detection or the moisture content measured by the most recent infrared detection.

[0091] In one implementation, the transmission power of the target microwave is determined based on the material and thickness of the surface coating of the target area and the original moisture content information. Coatings of different materials and thicknesses have different absorption and reflection characteristics for microwaves, so the transmission power of the microwave needs to be adjusted according to the actual situation to ensure that the microwave can penetrate the coating and effectively interact with the moisture in the wood. At the same time, considering the original moisture content information also helps to more accurately predict the propagation and attenuation of microwaves in wood, thereby ensuring that the microwave can penetrate the target area.

[0092] In one embodiment, step S105 includes:

[0093] Step 1: Convert the microwave attenuation signal into an electrical signal, and amplify and filter the electrical signal to obtain the target signal.

[0094] Step 2: Calculate the energy attenuation value and phase offset of the target microwave according to the target signal.

[0095] Step three, according to the material and thickness of the surface coating of the target area, the energy attenuation value and the phase offset are corrected to obtain the target attenuation value and the target offset.

[0096] Step 4: Obtain the target moisture content according to the target attenuation value and the target offset.

[0097] In one implementation, the microwave attenuation signal is converted into an electrical signal, and the electrical signal is amplified and filtered, which can eliminate noise and interference in the signal and improve the signal-to-noise ratio. This helps to more accurately extract information related to the target moisture content and provide a reliable data basis for subsequent calculations and analysis.

[0098] In one implementation, the energy attenuation value and phase offset are corrected by taking into account the influence of the material and thickness of the surface coating of the target area on microwave propagation. This can eliminate the influence of the coating on the measurement results, making the obtained moisture content data more accurate and reliable.

[0099] In one implementation, a mathematical model may be determined through experimental data, and the mathematical model may be used to map the target moisture content according to the corrected energy attenuation value and the phase offset.

[0100] The embodiment of the present invention provides a system for detecting moisture content of wooden cultural relics based on immovable cultural relics. Figure 2 , Figure 2 The present invention provides an architecture diagram of a system for detecting moisture content of wooden cultural relics based on immovable cultural relics. The system includes:

[0101] The temperature information acquisition module is used to monitor the target area of ​​the target cultural relic in real time and obtain the temperature information of the target area.

[0102] The primary judgment module is used to make an abnormal judgment on the target cultural relic based on the temperature information.

[0103] The coating information acquisition module is used to obtain the material and thickness of the surface coating of the target area if the result of an abnormality judgment is abnormal.

[0104] The microwave transmitting module is used to transmit target microwaves to the target area and receive the microwave attenuation signal after the target microwaves penetrate the target area.

[0105] The moisture content detection module is used to obtain the target moisture content according to the microwave attenuation signal and the material and thickness of the surface coating of the target area.

[0106] The secondary judgment module performs secondary abnormality judgment on the target cultural relics based on the target moisture content.

[0107] The result of an abnormality judgment includes normal and abnormal.

[0108] A method for detecting the moisture content of wooden cultural relics based on immovable cultural relics provided in an embodiment of the present invention performs real-time monitoring of target cultural relics by means of temperature monitoring to ensure that changes in the state of the cultural relics can be discovered in time, and accurate moisture content is obtained by microwave measurement. This rapid response mechanism helps to reduce the risk of damage to cultural relics caused by delays. By obtaining the material and thickness of the coating on the surface of the cultural relic, the microwave detection signal is corrected, eliminating the influence of the coating on the detection signal, thereby improving the accuracy of microwave detection.

[0109] In one embodiment, the temperature information includes an infrared thermal imaging image; and the primary judgment module includes:

[0110] The fuzzy moisture content calculation module is used to use the infrared thermal imaging image as the input of the pre-trained neural network model to obtain the first moisture content of the target area.

[0111] The primary abnormality judgment module is used to judge that the target cultural relic is abnormal if the first moisture content exceeds a first preset range; otherwise, the target cultural relic is normal.

[0112] In one embodiment, the coating information acquisition module includes:

[0113] The coating material acquisition module is used to query maintenance records and extract the material type of the surface coating of the target area.

[0114] The acoustic wave parameter determination module is used to determine the parameters of the target ultrasonic wave according to the material type of the surface coating of the target area; the parameters include the frequency, power and pulse width of the target ultrasonic wave.

[0115] The acoustic wave signal generating module is used to transmit target ultrasonic waves to the target area according to the parameters and receive the echo signal.

[0116] The coating thickness determination module is used to determine the thickness of the surface coating of the target area according to the echo signal.

[0117] In one embodiment, the microwave transmission module comprises:

[0118] The moisture content prediction module is used to query the measurement records and obtain the most recent moisture content measurement information of the target area as the original moisture content information.

[0119] The microwave parameter determination module is used to determine the transmission power of the target microwave according to the material and thickness of the surface coating of the target area and the original moisture content information.

[0120] The microwave generating module is used to transmit target microwaves to the target area according to the transmitting power.

[0121] In one embodiment, the moisture content detection module includes:

[0122] The signal preprocessing module is used to convert the microwave attenuation signal into an electrical signal, and amplify and filter the electrical signal to obtain the target signal.

[0123] The variation calculation module is used to calculate the energy attenuation value and phase offset of the target microwave according to the target signal.

[0124] The variation correction module is used to correct the energy attenuation value and the phase offset according to the material and thickness of the surface coating of the target area to obtain the target attenuation value and the target offset.

[0125] The target moisture content determination module is used to obtain the target moisture content according to the target attenuation value and the target offset.

[0126] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A method for detecting moisture content of wooden cultural relics based on immovable cultural relics, characterized in that: The method comprises: Monitor the target area of ​​the target cultural relic in real time and obtain temperature information of the target area; According to the temperature information, an abnormality judgment is performed on the target cultural relic; the result of the abnormality judgment includes normal and abnormal; If the result of the first abnormality judgment is abnormal, obtaining the material and thickness of the surface coating of the target area; transmitting a target microwave to the target area, and receiving a microwave attenuation signal after the target microwave penetrates the target area; Obtaining a target moisture content according to the microwave attenuation signal and the material and thickness of the surface coating of the target area; According to the target moisture content, a secondary abnormality judgment is performed on the target cultural relic; The temperature information includes an infrared thermal imaging image; and performing an abnormality judgment on the target cultural relic based on the temperature information includes: Using the infrared thermal imaging image as an input of a pre-trained neural network model to obtain a first moisture content of the target area; If the first moisture content exceeds a first preset range, the target cultural relic is determined to be abnormal; otherwise, the target cultural relic is determined to be normal; The step of obtaining the material and thickness of the surface coating of the target area includes: Query maintenance records to extract the material type of the surface coating of the target area; Determining the parameters of the target ultrasonic wave according to the material type of the surface coating of the target area; the parameters include the frequency, power and pulse width of the target ultrasonic wave; According to the parameters, transmitting target ultrasonic waves to the target area and receiving echo signals; Determining the thickness of the surface coating of the target area according to the echo signal; The transmitting of the target microwave to the target area and receiving the microwave attenuation signal after the target microwave penetrates the target area comprises: Query the measurement record to obtain the most recent moisture content measurement information of the target area as the original moisture content information; Determining the transmission power of the target microwave according to the material and thickness of the surface coating of the target area and the original moisture content information; transmitting the target microwave to the target area according to the transmitting power; The step of obtaining the target moisture content according to the microwave attenuation signal and the material and thickness of the surface coating of the target area includes: Converting the microwave attenuation signal into an electrical signal, and amplifying and filtering the electrical signal to obtain a target signal; Calculating the energy attenuation value and phase offset of the target microwave according to the target signal; According to the material and thickness of the surface coating of the target area, the energy attenuation value and the phase offset are corrected to obtain a target attenuation value and a target offset; The target moisture content is obtained according to the target attenuation value and the target offset.

2. A system for detecting moisture content of wooden cultural relics based on immovable cultural relics, used to implement the method for detecting moisture content of wooden cultural relics based on immovable cultural relics as claimed in claim 1, characterized in that: The system comprises: A temperature information acquisition module is used to monitor a target area of ​​a target cultural relic in real time and acquire temperature information of the target area; A primary judgment module, used for performing a primary abnormality judgment on the target cultural relic according to the temperature information; the result of the primary abnormality judgment includes normal and abnormal; A coating information acquisition module, for acquiring the material and thickness of the surface coating of the target area if the result of the first abnormality judgment is abnormal; A microwave transmitting module, used for transmitting target microwaves to the target area and receiving microwave attenuation signals after the target microwaves penetrate the target area; A moisture content detection module, used to obtain a target moisture content according to the microwave attenuation signal and the material and thickness of the surface coating of the target area; The secondary judgment module performs secondary abnormality judgment on the target cultural relic according to the target moisture content.

3. The moisture content detection system for wooden cultural relics based on immovable cultural relics according to claim 2 is characterized in that: The temperature information includes an infrared thermal imaging image; the primary judgment module includes: A fuzzy moisture content calculation module, used for taking the infrared thermal imaging image as an input of a pre-trained neural network model to obtain a first moisture content of the target area; The primary abnormality judgment module is used to judge that the target cultural relic is abnormal if the first moisture content exceeds a first preset range; otherwise, judge that the target cultural relic is normal.

4. The moisture content detection system for wooden cultural relics based on immovable cultural relics according to claim 2 is characterized in that: The coating information acquisition module includes: A coating material acquisition module is used to query maintenance records and extract the material type of the surface coating of the target area; An acoustic wave parameter determination module, used to determine the parameters of the target ultrasonic wave according to the material type of the surface coating of the target area; the parameters include the frequency, power and pulse width of the target ultrasonic wave; An acoustic wave signal generating module, used to transmit a target ultrasonic wave to the target area according to the parameters, and receive an echo signal; The coating thickness determination module is used to determine the thickness of the coating on the surface of the target area according to the echo signal.

5. The moisture content detection system for wooden cultural relics based on immovable cultural relics according to claim 2 is characterized in that: The microwave transmitting module comprises: A moisture content prediction module is used to query the measurement records and obtain the most recent moisture content measurement information of the target area as the original moisture content information; A microwave parameter determination module, used to determine the transmission power of the target microwave according to the material and thickness of the surface coating of the target area and the original moisture content information; The microwave generating module is used to transmit the target microwave to the target area according to the transmitting power.

6. The moisture content detection system for wooden cultural relics based on immovable cultural relics according to claim 5 is characterized in that: The moisture content detection module comprises: A signal preprocessing module, used for converting the microwave attenuation signal into an electrical signal, and amplifying and filtering the electrical signal to obtain a target signal; A variation calculation module, used for calculating the energy attenuation value and phase offset of the target microwave according to the target signal; A variation correction module, used to correct the energy attenuation value and the phase offset according to the material and thickness of the surface coating of the target area to obtain a target attenuation value and a target offset; The target moisture content determination module is used to obtain the target moisture content according to the target attenuation value and the target offset.

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