A new water content detector

Abstract

The utility model discloses a novel moisture detector applies in the field of detection instrument, solved the simple equipment of current equipment and inconvenient to use technical problem that cannot satisfy the use demand of meeting detection working condition, and its technical scheme main points are including instrument body and spherical probe, the instrument body includes split type upper cabin and lower cabin, is equipped with integrated high frequency circuit and microcontrol unit module in the upper cabin, the spherical probe is linked with integrated high frequency circuit, is equipped with double -mode composite probe module in the spherical probe, double -mode composite probe module includes annular capacitance electrode and center electromagnetic wave antenna, the annular capacitance electrode evenly distributes in the inner wall of spherical probe, the center electromagnetic wave antenna is located at the spherical heart place of spherical probe inner chamber, the tail end of center electromagnetic wave antenna is connected with the coaxial cable, still is equipped with curved surface self -adaptation structure on the spherical probe, has can satisfy the use demand of multiple working condition, improves the convenient and reliable technical effect of equipment use.

Description

Technical Field

[0001] This utility model relates to the field of testing instruments, and in particular to a novel moisture detector. Background Technology

[0002] A spherical inductive moisture meter is an instrument based on non-contact or non-destructive testing principles. It rapidly measures the moisture content of materials using technologies such as electromagnetic waves and capacitive sensing. Its spherical probe design can adapt to the testing needs of different surfaces (such as corners and curved areas), and it is widely used in construction, papermaking, packaging, chemical and other fields.

[0003] Existing moisture meters, due to their simple structure, can only perform basic testing for single testing needs and cannot be used for complex testing conditions. They are not only extremely inconvenient to use, but the accuracy of the test parameters cannot be guaranteed. Utility Model Content

[0004] The purpose of this invention is to provide a new type of moisture detector, which has the advantages of meeting the needs of multiple working conditions and improving the convenience and reliability of equipment use.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: A novel moisture detector, comprising an instrument body and a spherical probe, wherein the instrument body comprises a split upper chamber and a lower chamber, the upper chamber being equipped with an integrated high-frequency circuit and a microcontroller module, the spherical probe being connected to the integrated high-frequency circuit, and the spherical probe being equipped with a dual-mode composite probe module, the dual-mode composite probe module comprising a ring-shaped capacitor electrode and a central electromagnetic wave antenna, the ring-shaped capacitor electrode being evenly distributed on the inner wall of the spherical probe, and the central electromagnetic wave antenna being disposed in the inner cavity of the spherical probe. At the center of the sphere, a coaxial cable is connected to the tail end of the central electromagnetic wave antenna. The coaxial cable is connected to an integrated high-frequency circuit. The spherical probe is also equipped with a curved surface adaptive bonding structure, which includes a flexible conductive silicone layer and a pressure regulating cavity. The flexible conductive silicone layer is disposed on the surface of the spherical probe, and multiple pressure sensing blocks are disposed within the flexible conductive silicone layer. The pressure regulating cavity is disposed between the flexible conductive silicone layer and the surface of the spherical probe. A lithium battery block and a micro air pump are disposed in the lower chamber, and the micro air pump is connected to the pressure regulating cavity.

[0006] Furthermore, a common ground shielding layer is provided between the annular capacitor electrode and the central electromagnetic wave antenna, and the common ground shielding layer is a metal mesh.

[0007] Furthermore, the outer wall of the upper cabin is provided with an aluminum-magnesium alloy shielding layer.

[0008] Furthermore, the interior of the upper compartment is also equipped with a miniature cooling fan and graphene thermal pads.

[0009] Furthermore: the upper and lower compartments are movably connected, and the lower compartment end is provided with a connection slot for the lower compartment to be inserted.

[0010] Furthermore, the space between the upper and lower compartments is filled with ceramic fiber insulation material.

[0011] In summary, this utility model has the following beneficial effects:

[0012] 1. By combining the integrated high-frequency circuit, microcontroller module and dual-mode composite probe module of the spherical probe part inside the upper chamber, it can realize automatic mode switching and accurate measurement when detecting different objects; at the same time, by using the flexible conductive silicone layer and micro air pump, it can achieve full contact and adhesion to the surface of non-planar objects, ensuring the reliability and accuracy of the final measured data. The overall equipment is convenient and easy to use. Attached Figure Description

[0013] Figure 1 This is a schematic diagram used to illustrate the external structure of the detector in the embodiment;

[0014] Figure 2 This is a cross-sectional schematic diagram used to illustrate the internal structure of the detector in the embodiment;

[0015] Figure 3 yes Figure 2 A magnified view of A in the middle.

[0016] Reference numerals: 1. Instrument body; 2. Upper chamber; 3. Lower chamber; 4. Spherical probe; 5. Integrated high-frequency circuit; 6. Microcontroller module; 7. Ring capacitor electrode; 8. Central electromagnetic wave antenna; 9. Coaxial cable; 10. Flexible conductive silicone layer; 11. Air pressure regulating chamber; 12. Lithium battery block; 13. Miniature air pump; 14. Common ground shielding layer; 15. Aluminum-magnesium alloy shielding layer; 16. Miniature cooling fan; 17. Graphene thermal conductive patch; 18. Connection slot; 19. Ceramic fiber thermal insulation material. Detailed Implementation

[0017] The present invention will be further described in detail below with reference to the accompanying drawings.

[0018] Example: A novel moisture detector, such as Figure 1 and Figure 2 As shown, the instrument includes the instrument body 1 and the spherical probe 4. When in use, the user contacts the spherical probe 4 with the surface of the object to be measured, and the spherical probe 4 transmits the measured signal to the instrument body 1 for analysis and processing.

[0019] like Figure 2 and Figure 3As shown, the instrument body 1 includes a split upper chamber 2 and a lower chamber 3. The upper chamber 2 houses an integrated high-frequency circuit 5 and a microcontroller module 6. The spherical probe 4 is connected to the integrated high-frequency circuit 5. The lower chamber 3 houses a lithium battery pack 12 and a micro air pump 13. The lithium battery ensures the efficient operation of multiple components in the upper chamber 2. The upper chamber 2 and the lower chamber 3 are movably connected. The end of the upper chamber 2 has a connection slot 18 for the lower chamber 3 to be inserted. The space between the upper chamber 2 and the lower chamber 3 is filled with ceramic fiber heat insulation material 19, ensuring the independent setting of the upper chamber 2 and the lower chamber 3, facilitating disassembly and maintenance. The ceramic fiber heat insulation material 19 effectively reduces the heat conduction that may be generated by the lithium battery pack 12, which may affect the operation of the precision components in the upper chamber 2. At the same time, an aluminum-magnesium alloy shielding layer 15 is provided on the outer wall of the upper chamber 2 to physically isolate the integrated high-frequency circuit 5 from the lithium battery pack 12, reducing temperature drift interference and improving the immunity to interference during the detection and sensing process.

[0020] Because different test objects have different material properties, the spherical probe 4 is equipped with a dual-mode composite probe module. This module includes a ring-shaped capacitive electrode 7 and a central electromagnetic wave antenna 8. When the test object is a high-dielectric material, a capacitive induction mode is used; when the test object is a low-dielectric material, an electromagnetic wave reflection mode is used. A common ground shielding layer 14, which is a metal mesh, is provided between the ring-shaped capacitive electrode 7 and the central electromagnetic wave antenna 8. This design ensures the reliability of the independent operation of the dual-mode switching process and reduces signal crosstalk.

[0021] The annular capacitor electrodes 7 are evenly distributed on the inner wall of the spherical probe 4. The central electromagnetic wave antenna 8 is located at the center of the sphere inside the spherical probe 4. The tail end of the central electromagnetic wave antenna 8 is connected to a coaxial cable 9, which is connected to the integrated high-frequency circuit 5. After the user powers on the device, the spherical probe 4 contacts the object to be tested. The microcontroller module 6 controls the integrated high-frequency circuit 5 to emit a high-frequency excitation signal. When the probe contacts the object, the ring capacitor electrode 7 acquires the initial dielectric constant. Due to the change in the dielectric constant of the material, the capacitance value shifts, causing changes in the frequency or amplitude of the high-frequency signal. If the signal strength is higher than the device's preset threshold, a filter circuit is also connected in the integrated high-frequency circuit 5 to filter out high-frequency noise, environmental interference, and other noise contained in the capacitance signal. The final output capacitance signal is then converted from analog to digital and processed by the microcontroller module 6. If the signal strength is lower than the device's preset threshold, the device automatically switches to electromagnetic wave reflection mode. The microcontroller module 6 controls the radio frequency module in the integrated high-frequency circuit 5 to emit electromagnetic waves. The reflected electromagnetic waves are transmitted back to the integrated high-frequency circuit 5 via the antenna, and their phase difference is detected and analyzed. Finally, the microcontroller module 6 calculates the moisture content of the object to be tested using the converted electrical signal.

[0022] Considering that in existing testing processes, insufficient contact between the spherical probe 4 and the surface of the object being tested leads to excessive deviations in the measured data, the spherical probe 4 is further equipped with a curved surface adaptive bonding structure. This structure includes a flexible conductive silicone layer 10 and a pressure regulating cavity 11. The flexible conductive silicone layer 10 is disposed on the surface of the spherical probe 4 and contains multiple pressure sensing blocks. The pressure regulating cavity 11 is located between the flexible conductive silicone layer 10 and the surface of the spherical probe 4, and a miniature air pump 13 is connected to the pressure regulating cavity 11. During measurement, when the user presses the spherical probe 4 against the object being tested, if the spherical probe 4 contacts the flat surface, the pressure regulating cavity 11 does not expand, and the flexible conductive silicone layer 10 naturally adheres; if the spherical probe 4 contacts the flat surface, the pressure regulating cavity 11 expands, and the flexible conductive silicone layer 10 deforms to fill the gaps. Considering the intelligence and ease of operation during equipment use, multiple pressure sensing blocks set inside the flexible conductive silicone layer 10 can detect the contact force in real time. If it is less than 5N, it indicates that the fit is not complete. The microcontroller module 6 receives the signal and outputs the command to start the micro air pump 13 to pressurize the flexible conductive silicone layer 10 until the contact force stabilizes in the range of 5-8N, so as to ensure the reliable use of the equipment.

[0023] The upper compartment 2 is also equipped with a miniature cooling fan 16 and a graphene thermal conductive patch 17. When the microcontroller module 6 detects that the temperature of the upper compartment 2 is >45℃, the cooling fan is activated to cool it down. The graphene thermal conductive patch 17 can also conduct heat in a timely manner to achieve the cooling effect. In particular, after long-term use, the heat generated by the circuit will affect the measurement accuracy and cause serious temperature drift interference.

[0024] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A novel moisture detector, comprising an instrument body (1) and a spherical probe (4), characterized in that: The instrument body (1) includes a split upper chamber (2) and a lower chamber (3). The upper chamber (2) is equipped with an integrated high-frequency circuit (5) and a microcontroller module (6). The spherical probe (4) is connected to the integrated high-frequency circuit (5). The spherical probe (4) is equipped with a dual-mode composite probe module. The dual-mode composite probe module includes a ring capacitor electrode (7) and a central electromagnetic wave antenna (8). The ring capacitor electrode (7) is evenly distributed on the inner wall of the spherical probe (4). The central electromagnetic wave antenna (8) is located at the center of the spherical probe (4). The tail end of the central electromagnetic wave antenna (8) is connected to a coaxial cable (9). The cable (9) is connected to the integrated high-frequency circuit (5). The spherical probe (4) is also provided with a curved surface adaptive bonding structure. The curved surface adaptive bonding structure includes a flexible conductive silicone layer (10) and a pressure regulating cavity (11). The flexible conductive silicone layer (10) is located on the surface of the spherical probe (4). Multiple pressure sensing blocks are provided in the flexible conductive silicone layer (10). The pressure regulating cavity (11) is located between the flexible conductive silicone layer (10) and the surface of the spherical probe (4). The lower chamber (3) is provided with a lithium battery block (12) and a micro air pump (13). The micro air pump (13) is connected to the pressure regulating cavity (11).

2. The novel moisture detector according to claim 1, characterized in that: A common ground shielding layer (14) is provided between the annular capacitor electrode (7) and the central electromagnetic wave antenna (8), and the common ground shielding layer (14) is a metal mesh.

3. The novel moisture detector according to claim 1, characterized in that: The outer wall of the upper cabin (2) is provided with an aluminum-magnesium alloy shielding layer (15).

4. The novel moisture detector according to claim 1, characterized in that: The upper compartment (2) is also equipped with a miniature cooling fan (16) and a graphene thermal conductive patch (17).

5. A novel moisture detector according to claim 1, characterized in that: The upper compartment (2) and the lower compartment (3) are movably connected, and the upper compartment (2) is provided with a connection slot (18) at the end for the lower compartment (3) to be inserted.

6. A novel moisture detector according to claim 1, characterized in that: The space between the upper compartment (2) and the lower compartment (3) is filled with ceramic fiber insulation material (19).

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