Capacitance type wood moisture detector

Abstract

The application relates to a capacitive wood humidity detector and relates to the technical field of wood humidity. The wood humidity detector comprises an upper shell, a lower shell, a circuit board installed on the lower shell, a display installed on the circuit board, a detection needle installed on the circuit board, inductive plates arranged on the two sides of the lower shell, the inductive plates being electrically connected with the circuit board, soft rubber handgrips arranged on the two sides of the lower shell, the soft rubber handgrips being arranged outside the inductive plates, and adhesive installed on the side, where the inductive plates are connected with the lower shell. The inductive plates form a capacitive structure. The capacitive structure formed by the inductive plates compensates the detection element. An MCU processor is installed on the circuit board. The wood humidity detector has the effect that the measurement values tend to be consistent when the wood humidity detector is handheld and separated from hands during wood humidity detection.

Description

Technical Field

[0001] This application relates to the field of wood moisture detection technology, and in particular to a capacitive wood moisture detector. Background Technology

[0002] Wood is a common material in our daily lives, and many pieces of furniture require it. During wood processing, moisture control is crucial, necessitating the use of a wood moisture detector. When the detector is held in hand, the hand affects the sensor plate, causing it to register a higher capacitance value and thus a higher reading. Conversely, when the hand is removed, the capacitance decreases, resulting in a lower reading. This significant difference between holding and releasing the hand makes the measurement difficult to interpret. Summary of the Invention

[0003] The purpose of this application is to provide a capacitive wood moisture detector to solve the technical problem of "difference between handheld and unheld moisture readings".

[0004] This application provides a capacitive wood moisture detector with the following technical solution: A capacitive wood moisture detector includes an upper housing and a lower housing. A circuit board is mounted on the lower housing, and a display is mounted on the circuit board. A detection element is mounted on the lower housing. Sensing plates are arranged on both sides of the lower housing, and the sensing plates are electrically connected to the circuit board. Soft rubber grips are arranged on both sides of the lower housing, with the soft rubber grips located on the outer side of the sensing plates. Adhesive backing is installed on the side of the sensing plate that contacts the lower housing. The sensing plates form a capacitor structure. The capacitor formed by the sensing plates compensates for the detection element. An MCU processor is mounted on the circuit board.

[0005] Optionally, the detector is capacitive.

[0006] Optionally, multiple control buttons are provided on the circuit board, and multiple control buttons are installed on the upper housing.

[0007] Optionally, a battery box is installed on the lower housing, and multiple batteries are installed inside the battery box, which power the circuit board.

[0008] Optionally, the detector, sensing plate, and control buttons are all electrically connected to the MCU processor.

[0009] In summary, this application includes at least one of the following beneficial technical effects: 1. A capacitor structure is formed by the product's sensing plate. The position of the two plates of the capacitor changes when the hand is held, which determines whether the hand is holding the product. When the hand leaves the product, the MCU processor on the circuit board compensates for the detection value of the two plates of the capacitor to achieve the same data as when the hand is holding the product. This makes the data consistent before and after the hand is held, thereby reducing measurement errors.

[0010] 2. A soft rubber grip is located on the outside of the sensor plate to protect it and effectively prevent direct hand contact. An adhesive backing is provided on the inside of the sensor plate to facilitate its adhesion to the lower housing. The adhesive backing has a certain degree of elasticity, which makes the sensor plate easy to deform and move, thus making the response more sensitive and easier to determine whether it is being held by hand. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application; Figure 2 This is a schematic diagram of the shell structure according to an embodiment of this application; Figure 3 This is a schematic diagram of the detector structure according to an embodiment of this application; Figure 4 This is a schematic diagram of the circuit board structure according to an embodiment of this application; In the diagram, 1 is the upper housing; 11 is the control button; 2 is the lower housing; 21 is the battery box; 3 is the circuit board; 31 is the control button; 4 is the display; 5 is the detector; 6 is the sensor plate; and 7 is the soft rubber grip. Detailed Implementation

[0012] The following is in conjunction with the appendix Figure 1 - Appendix Figure 4 This application will be described in further detail below.

[0013] Reference Figure 1 , Figure 2 A capacitive wood moisture detector includes an upper housing 1 and a lower housing 2. A circuit board 3 is mounted on the lower housing 2, and a display 4 is mounted on the circuit board 3. A detection element 5 is mounted on the lower housing 2. The detector is characterized by having sensing plates 6 on both sides of the lower housing 2, which are electrically connected to the circuit board 3. Soft rubber grips 7 are also provided on both sides of the lower housing 2, located on the outer side of the sensing plates 6 (hand gesture compensation flexible FPC). Adhesive backing is installed on the side of the sensing plates 6 that contacts the lower housing 2. The sensing plates 6 form a capacitor structure, and the capacitor formed by the sensing plates 6 determines whether the object is being held. An MCU processor is mounted on the circuit board 3.

[0014] When the wood humidity detector is held by hand, the hand affects the sensing plate that detects wood humidity, resulting in a larger capacitance and a larger detected value. By applying external force to the sensing plate 6, the positions of the sensing plates 6 on both sides of the lower housing 2 are moved closer together to indicate that the hand is being held. When the hand is removed, the positions of the sensing plates 6 on both sides of the lower housing 2 are moved away from each other, which is determined as the hand being removed. The MCU processor judges the two states. When the hand is removed, the MCU processor compensates for the data measured by the detector 5, so that the measured data remains unchanged, thereby improving the accuracy of humidity detection.

[0015] Reference Figure 1 , Figure 2 The detector 5 is a capacitor. When monitoring the humidity of wood, the wood being monitored is located between two capacitor plates. The capacitance is determined by the number of times the current charges and discharges the capacitor, thereby determining the humidity of the wood. In this patent, the detector 5 is a single plate that can form a complete capacitor structure by using itself as one plate, the ground (or reference ground) as another plate, and air / insulation layer as the medium. Thus, when the humidity of wood is detected, the wood acts as the medium, thereby determining the humidity of the wood.

[0016] Reference Figure 1 , Figure 2 Multiple control buttons 31 are provided on the circuit board 3, and multiple control buttons 11 are installed on the upper housing 1. The working mode of the wood humidity detector can be adjusted by controlling the control buttons 11 to detect the humidity of different types of wood.

[0017] Reference Figure 1 , Figure 2 A battery box 21 is installed on the lower housing 2. Multiple batteries are installed in the battery box 21, and the batteries power the circuit board 3.

[0018] Reference Figure 1 , Figure 4 The detector 5, sensing plate 6, and control button 31 are all electrically connected to the MCU processor. Detector 5 detects the moisture content of the wood and transmits the data to the MCU processor for processing. (The sensing plate 6 is a gesture-compensated flexible FPC.) When the wood moisture detector is held, the sensing plate 6 deforms and shifts, which the MCU processor determines is a handheld state. After the wood moisture detection is completed, the hand leaves the moisture detector, and the sensing plate 6 returns to its original deformation state, which the MCU processor determines is a hand-removed state. At this time, the MCU processor compensates for the value measured by the detector 5, so that the measured data remains unchanged, thereby improving the accuracy of the moisture detection. (The compensation value depends on the wood moisture content and is implemented through a written software program.)

[0019] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A capacitive wood moisture detector, comprising an upper housing (1), a lower housing (2), a circuit board (3) mounted on the lower housing (2), a display (4) mounted on the circuit board (3), and a detector (5) mounted on the lower housing (2), characterized in that, The lower housing (2) is provided with sensing plates (6) on both sides. The sensing plates (6) are electrically connected to the circuit board (3). Soft rubber grips (7) are provided on both sides of the lower housing (2). The soft rubber grips (7) are located on the outside of the sensing plates (6). The side of the sensing plates (6) that is in contact with the lower housing (2) is covered with adhesive. The sensing plates (6) form a capacitor structure. The capacitor formed by the sensing plates (6) determines whether the hand is held. An MCU processor is installed on the circuit board (3).

2. The capacitive wood moisture detector according to claim 1, characterized in that, The detector (5) is capacitive.

3. A capacitive wood moisture detector according to claim 1, characterized in that, Multiple control buttons (31) are provided on the circuit board (3), and multiple control buttons (11) are installed on the upper housing (1).

4. A capacitive wood moisture detector according to claim 1, characterized in that, A battery box (21) is installed on the lower housing (2), and multiple batteries are installed inside the battery box (21). The batteries power the circuit board (3).

5. A capacitive wood moisture detector according to claim 1, characterized in that, The detector (5), the sensing plate (6), and the control button (31) are all electrically connected to the MCU processor.

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