Wall detector

Abstract

This application relates to the field of instrumentation and equipment, and in particular to a wall detection instrument, comprising: a laser marking unit for outputting horizontal and / or vertical laser beams; a wall detection unit for detecting the presence of foreign objects in the wall and generating a detection signal; and a control unit connected to the laser marking unit and the wall detection unit for controlling the laser marking unit to output horizontal or vertical laser beams, and controlling the wall detection unit to output both horizontal and vertical laser beams when the detection signal indicates the presence of a foreign object in the wall. This application can realize both laser marking and foreign object detection functions, facilitating the location of foreign objects.

Description

Technical Field

[0001] This application relates to the field of instruments and equipment, and in particular to a wall inspection instrument. Background Technology

[0002] Traditional wall detectors are only used to detect the presence of foreign objects in the wall. When it is necessary to mark lines on the wall, the workers need to use a separate laser marking device.

[0003] Laser marking and wall inspection instruments are two different devices, and operators need to frequently switch between them, making them inconvenient to use. Utility Model Content

[0004] Therefore, it is necessary to provide a wall inspection instrument to address the aforementioned technical problems.

[0005] This application provides a wall inspection instrument, comprising:

[0006] Laser scribing unit, used to output horizontal and / or vertical laser;

[0007] The wall detection unit is used to detect whether there are foreign objects in the wall and generate a detection signal;

[0008] The control unit is connected to the laser marking unit and the wall detection unit, and is used to control the laser marking unit to output horizontal or vertical laser, and to control the wall detection unit to output horizontal and vertical laser when it is determined that there is a foreign object in the wall according to the detection signal.

[0009] In some embodiments, the laser scribing unit includes:

[0010] A first horizontal laser emitter is used to output a horizontal laser in a first direction;

[0011] A second horizontal laser emitter is used to output a horizontal laser beam in the opposite direction to the first direction;

[0012] Vertical laser emitter, used to output vertical laser light;

[0013] A first switching switch is connected to the control unit, the first horizontal laser emitter, the second horizontal laser emitter, and the vertical laser emitter;

[0014] The control unit controls the first switching switch to control at least one of the first horizontal laser emitter, the second horizontal laser emitter, and the vertical laser emitter to output laser light.

[0015] In some embodiments, the wall detection unit includes:

[0016] Capacitive sensing electrode sheet, used to form an induced capacitance with the wall;

[0017] The signal acquisition module is connected to the capacitive sensing electrode and the control unit, and is used to generate the detection signal based on the sensing capacitance.

[0018] In some embodiments, the signal acquisition module includes:

[0019] First resonant circuit;

[0020] The second resonant circuit is connected to the capacitor sensing electrode plate;

[0021] A differential signal circuit, connected to the first resonant circuit and the second resonant circuit, is used to calculate the difference between the first resonant frequency signal of the first resonant circuit and the second resonant frequency signal of the second resonant circuit, wherein the second resonant frequency signal is used as the detection signal.

[0022] An analog-to-digital converter circuit, connected to the differential signal circuit, is used to perform analog-to-digital conversion on the difference;

[0023] The control unit determines whether there are foreign objects in the wall based on the difference after analog-to-digital conversion.

[0024] In some embodiments, the signal acquisition module further includes:

[0025] A first signal amplification circuit is connected to the first resonant circuit and the differential signal circuit;

[0026] The second signal amplification circuit is connected to the second resonant circuit and the differential signal circuit;

[0027] The third signal amplification circuit is connected to the differential signal circuit.

[0028] In some embodiments, the wall detection unit includes:

[0029] An ultrasonic transmitting module, connected to the control unit, is used to transmit ultrasonic waves;

[0030] An ultrasonic receiving module, connected to the control unit, is used to receive ultrasonic waves;

[0031] The control unit determines whether there are foreign objects in the wall based on the ultrasonic waves received by the ultrasonic receiving module.

[0032] In some embodiments, it also includes:

[0033] The second switching switch is connected to the laser marking unit, the wall detection unit, and the control unit;

[0034] The control unit controls the second switching switch to control the operation of the laser marking unit and / or the wall detection unit.

[0035] In some embodiments, the control unit controls the laser marking unit to output a horizontal or vertical laser of a first color, and when it is determined that there is a foreign object in the wall based on the detection signal, it controls the wall detection unit to output a horizontal and vertical laser of a second color.

[0036] In some embodiments, it also includes:

[0037] A buzzer, connected to the control unit, is used to output a buzzing signal;

[0038] When the control unit determines that there is a foreign object in the wall based on the detection signal, it controls the buzzer to output a buzzing signal.

[0039] In some embodiments, it also includes:

[0040] A level detection unit, connected to the control unit, is used for detecting the levelness of the wall.

[0041] The aforementioned wall inspection instrument has the following technical advantages:

[0042] 1. Since the wall detector includes both a laser marking unit and a wall detection unit, it can perform both laser marking and foreign object detection functions. Operators do not need to frequently change instruments and equipment during operation, making it more convenient to use.

[0043] 2. During the wall inspection process, the control unit first controls the laser marking unit to output horizontal or vertical lasers to instruct the operator to move according to the horizontal or vertical lasers, so as to ensure that the wall detector moves in the same direction. Then, when it is determined that there are foreign objects in the wall, the control unit controls the wall detection unit to output horizontal and vertical lasers. The intersection of the horizontal and vertical lasers is the location of the foreign object, which facilitates the location of the foreign object. Attached Figure Description

[0044] Figure 1 Here are some schematic diagrams of the wall detector provided in the embodiments of this application;

[0045] Figure 2 Schematic diagrams of the laser scribing unit provided in some embodiments of this application;

[0046] Figure 3 Here are some schematic diagrams of the wall detection unit provided in this application;

[0047] Figure 4 Here are some schematic diagrams of the signal acquisition module provided in this application;

[0048] Figure 5 Schematic diagrams of the signal acquisition module provided in other embodiments of this application;

[0049] Figure 6 Schematic diagrams of the wall detection unit provided in other embodiments of this application;

[0050] Figure 7 A schematic diagram of the structure of the second switching switch in some embodiments provided in this application;

[0051] Figure 8 Here are some schematic diagrams of the buzzer structure provided in this application;

[0052] Figure 9 The diagram shows the structure of the horizontal detection unit in some embodiments provided in this application.

[0053] Among them, 100 is a laser marking unit; 200 is a wall detection unit; 300 is a control unit; 400 is a second switching switch; 500 is a buzzer; 600 is a horizontal detection unit; 110 is a first horizontal laser emitter; 120 is a second horizontal laser emitter; 130 is a vertical laser emitter; 140 is a first switching switch; 210 is a capacitive sensing electrode; 220 is a signal acquisition module; 230 is an ultrasonic transmitting module; 240 is an ultrasonic receiving module; 221 is a first resonant circuit; 222 is a second resonant circuit; 223 is a differential signal circuit; 224 is an analog-to-digital conversion circuit; 225 is a first signal amplification circuit; 226 is a second signal amplification circuit; and 227 is a third signal amplification circuit. Detailed Implementation

[0054] To make the objectives, technical solutions, and advantages of this application clearer, the application is described and illustrated below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the application. All other embodiments obtained by those skilled in the art based on the embodiments provided in this application without inventive effort are within the scope of protection of this application. Furthermore, it is understood that although the efforts made in such a development process may be complex and lengthy, for those skilled in the art related to the content disclosed in this application, modifications to design, manufacturing, or production based on the technical content disclosed in this application are merely conventional technical means and should not be construed as insufficient disclosure of the content of this application.

[0055] In this application, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application may be combined with other embodiments without conflict.

[0056] Unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms “a,” “an,” “an,” “the,” and similar words used in this application do not indicate quantity limitation and may indicate singular or plural. The terms “comprising,” “including,” “having,” and any variations thereof used in this application are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or device that includes a series of steps or modules (units) is not limited to the listed steps or units, but may also include steps or units not listed, or may include other steps or units inherent to these processes, methods, products, or devices. The terms “connected,” “linked,” “coupled,” and similar words used in this application are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. “Multiple” used in this application means two or more. “And / or” describes the relationship between related objects, indicating that three relationships may exist; for example, “A and / or B” can represent: A alone, A and B simultaneously, and B alone. The terms “first,” “second,” “third,” etc., used in this application are merely to distinguish similar objects and do not represent a specific ordering of the objects.

[0057] Figure 1 The diagram shows the structure of the wall detector in some embodiments provided in this application. Figure 1 As shown, the wall detector includes a laser marking unit 100, a wall detection unit 200, and a control unit 300. The laser marking unit 100 outputs horizontal and / or vertical lasers; the wall detection unit 200 detects the presence of foreign objects in the wall and generates a detection signal; the control unit 300 is connected to the laser marking unit 100 and the wall detection unit 200, and controls the laser marking unit 100 to output horizontal or vertical lasers, and controls the wall detection unit 200 to output horizontal and vertical lasers when it is determined that there are foreign objects in the wall based on the detection signal.

[0058] In this embodiment, since the wall detector includes both a laser marking unit 100 and a wall detection unit 200, it can realize both laser marking and foreign object detection functions. Operators do not need to frequently change instruments and equipment during operation, making it more convenient to use.

[0059] During the wall inspection process, the control unit 300 first controls the laser marking unit 100 to output a horizontal or vertical laser to instruct the operator to move according to the horizontal or vertical laser, so as to ensure that the wall detector moves in the same direction. Then, when it is determined that there is a foreign object in the wall, the control unit 200 is controlled to output a horizontal and vertical laser. The intersection of the horizontal and vertical lasers is the location of the foreign object, which facilitates the location of the foreign object.

[0060] In some embodiments, such as Figure 2 As shown, the laser marking unit 100 includes: a first horizontal laser emitter 110, a second horizontal laser emitter 120, a vertical laser emitter 130, and a first switching switch 140. The first horizontal laser emitter 110 is used to output horizontal laser light in a first direction; the second horizontal laser emitter 120 is used to output horizontal laser light in the opposite direction to the first direction; and the vertical laser emitter 130 is used to output vertical laser light. The first switching switch 140 is connected to the control unit 300, the first horizontal laser emitter 110, the second horizontal laser emitter 120, and the vertical laser emitter 130.

[0061] The control unit 300 controls the first switching switch 140 to control at least one of the first horizontal laser emitter 110, the second horizontal laser emitter 120, and the vertical laser emitter 130 to output laser light. Operators can select the appropriate laser output according to actual needs.

[0062] In one example embodiment, the first switch 140 includes three dynamic contacts. An operator can use the physical button on the first switch 140 to activate the corresponding dynamic contacts via the control unit 300. When the first dynamic contact is activated, both the first horizontal laser emitter 110 and the second horizontal laser emitter 120 output horizontal laser light; when the second dynamic contact is activated, the vertical laser emitter 130 outputs horizontal laser light; and when the third dynamic contact is activated, the first horizontal laser emitter 110, the second horizontal laser emitter 120, and the vertical laser emitter 130 all output laser light.

[0063] In some embodiments, such as Figure 3As shown, the wall detection unit 200 includes a capacitive sensing electrode 210 and a signal acquisition module 220. The capacitive sensing electrode 210 is used to form an inductive capacitance with the wall; the signal acquisition module 220 is connected to the capacitive sensing electrode 210 and the control unit 300, and is used to generate the detection signal based on the inductive capacitance.

[0064] The capacitive sensing electrode 210 is, for example, a copper film. The capacitive sensing electrode 210 forms a sensing capacitor with the wall. The size of the sensing capacitor is related to the density of the wall. When the density of the wall changes, the sensing capacitor also changes, and the detection signal generated by the signal acquisition module 220 also changes.

[0065] The control unit 300 can determine whether there are foreign objects in the wall based on whether the detection signal changes. If the detection signal changes, there are foreign objects in the wall; otherwise, there are no foreign objects in the wall.

[0066] In one specific embodiment, such as Figure 4 As shown, the signal acquisition module 220 includes: a first resonant circuit 221, a second resonant circuit 222, a differential signal circuit 223, and an analog-to-digital converter circuit 224. The second resonant circuit 222 is connected to the capacitive sensing electrode 210; the differential signal circuit 223 is connected to the first resonant circuit 221 and the second resonant circuit 222, and is used to calculate the difference between the first resonant frequency signal of the first resonant circuit 221 and the second resonant frequency signal of the second resonant circuit 222, wherein the second resonant frequency signal is used as the detection signal; the analog-to-digital converter circuit 224 is connected to the differential signal circuit 223, and is used to perform analog-to-digital conversion on the difference.

[0067] Both the first resonant circuit 221 and the second resonant circuit 222 are composed of resistors and capacitors, and existing resonant circuit structures can be used.

[0068] The differential signal circuit 223 includes a differential circuit to calculate the difference between the first resonant frequency signal of the first resonant circuit 221 and the second resonant frequency signal of the second resonant circuit 222.

[0069] Since the second resonant circuit 222 is connected to the capacitor sensing electrode 210, its second resonant frequency signal is affected by the sensing capacitor.

[0070] Before starting the wall inspection, the wall detector is placed in a location free of foreign objects. The control unit 300 uses the difference between the first resonant frequency signal of the first resonant circuit 221 and the second resonant frequency signal of the second resonant circuit 222 as the initial value. During the wall inspection, the control unit 300 continuously obtains this difference. If the difference is the same as or close to the initial value, it indicates that there are no foreign objects in the wall; if the difference differs significantly from the initial value, then there are foreign objects in the wall.

[0071] In some embodiments, such as Figure 5 As shown, the signal acquisition module 220 further includes: a first signal amplification circuit 225, a second signal amplification circuit 226, and a third signal amplification circuit 227. The first signal amplification circuit 225 is connected to the first resonant circuit 221 and the differential signal circuit 223; the second signal amplification circuit 226 is connected to the second resonant circuit 222 and the differential signal circuit 223; and the third signal amplification circuit 227 is connected to the differential signal circuit 223.

[0072] The first signal amplifier circuit 225, the second signal amplifier circuit 226, and the third signal amplifier circuit 227 all include differential amplifiers and can use existing signal amplifier circuits.

[0073] In this embodiment, a first signal amplification circuit 225, a second signal amplification circuit 226, and a third signal amplification circuit 227 are provided to amplify the signal and improve the accuracy of foreign object detection.

[0074] In other embodiments, such as Figure 6 As shown, the wall detection unit 200 includes an ultrasonic transmitting module 230 and an ultrasonic receiving module 240. The ultrasonic transmitting module 230 is connected to the control unit 300 and is used to transmit ultrasonic waves; the ultrasonic receiving module 240 is connected to the control unit 300 and is used to receive ultrasonic waves.

[0075] In this embodiment, a different foreign object detection principle is employed. The ultrasonic transmitting module 230 emits ultrasonic waves that are reflected after reaching the wall, and the ultrasonic receiving module 240 receives the reflected ultrasonic waves. It is understood that the attenuation of ultrasonic waves is related to the medium during transmission; if the medium changes, the attenuation also changes. Based on this, the control unit 300 can determine whether there is a foreign object in the wall by observing the changes in signal attenuation of the ultrasonic waves received by the ultrasonic receiving module 240.

[0076] In some embodiments, such as Figure 7 As shown, the wall detector also includes a second switch 400. The second switch 400 is connected to the laser marking unit 100, the wall detection unit 200, and the control unit 300.

[0077] To facilitate the switching of the working mode of the wall detector, the control unit 300 controls the second switching switch 400 to control the operation of the laser marking unit 100 and / or the wall detection unit 200.

[0078] In one example embodiment, the second switch 400 includes three dynamic contacts. An operator can use the physical button on the second switch 400 to activate the corresponding dynamic contact via the control unit 300. When the first dynamic contact is activated, the laser marking unit 100 operates; when the second dynamic contact is activated, the wall detection unit 200 operates; and when the third dynamic contact is activated, both the laser marking unit 100 and the wall detection unit 200 operate simultaneously.

[0079] In some embodiments, the control unit 300 controls the laser marking unit 100 to output a horizontal or vertical laser of a first color, and controls the wall detection unit 200 to output a horizontal and vertical laser of a second color when it is determined that there is a foreign object in the wall based on the detection signal.

[0080] In this embodiment, the presence of foreign objects in the wall is indicated by changes in the color of the laser.

[0081] In some embodiments, such as Figure 8 As shown, the wall detector also includes a buzzer 500. The buzzer 500 is connected to the control unit 300 and is used to output a buzzing signal.

[0082] When the control unit 300 determines that there is a foreign object in the wall based on the detection signal, it controls the buzzer 500 to output a buzzing signal.

[0083] In some embodiments, when the control unit 300 determines that there is a foreign object in the wall based on the detection signal, it can also simultaneously control the laser color change and the buzzer 500 to output a buzzer signal to provide multiple signal prompts.

[0084] In some embodiments, such as Figure 9 As shown, the wall detector also includes a horizontal detection unit 600, which is connected to the control unit 300 and is used for detecting the horizontality of the wall.

[0085] During the operation, it is usually necessary to check the levelness of the wall. In the prior art, a separate leveling instrument is required for the test. In this embodiment, the wall measuring instrument includes a laser marking unit 100, a wall measuring unit 200, and a level measuring unit 600. Therefore, it can realize the functions of laser marking, foreign object detection, and levelness detection. Operators do not need to frequently change instruments and equipment during the operation, making it more convenient to use.

[0086] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0087] The above embodiments merely illustrate several implementation methods of this application, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A wall inspection instrument, characterized in that, include: Laser scribing unit, used to output horizontal and / or vertical laser; The wall detection unit is used to detect whether there are foreign objects in the wall and generate a detection signal; The control unit is connected to the laser marking unit and the wall detection unit, and is used to control the laser marking unit to output horizontal or vertical laser, and to control the wall detection unit to output horizontal and vertical laser when it is determined that there is a foreign object in the wall according to the detection signal.

2. The wall inspection instrument according to claim 1, characterized in that, The laser scribing unit includes: A first horizontal laser emitter is used to output a horizontal laser in a first direction; A second horizontal laser emitter is used to output a horizontal laser beam in the opposite direction to the first direction; Vertical laser emitter, used to output vertical laser light; A first switching switch is connected to the control unit, the first horizontal laser emitter, the second horizontal laser emitter, and the vertical laser emitter; The control unit controls the first switching switch to control at least one of the first horizontal laser emitter, the second horizontal laser emitter, and the vertical laser emitter to output laser light.

3. The wall inspection instrument according to claim 1, characterized in that, The wall detection unit includes: Capacitive sensing electrode sheet, used to form an induced capacitance with the wall; The signal acquisition module is connected to the capacitive sensing electrode and the control unit, and is used to generate the detection signal based on the sensing capacitance.

4. The wall inspection instrument according to claim 3, characterized in that, The signal acquisition module includes: First resonant circuit; The second resonant circuit is connected to the capacitor sensing electrode plate; A differential signal circuit, connected to the first resonant circuit and the second resonant circuit, is used to calculate the difference between the first resonant frequency signal of the first resonant circuit and the second resonant frequency signal of the second resonant circuit, wherein the second resonant frequency signal is used as the detection signal. An analog-to-digital converter circuit, connected to the differential signal circuit, is used to perform analog-to-digital conversion on the difference; The control unit determines whether there are foreign objects in the wall based on the difference after analog-to-digital conversion.

5. The wall inspection instrument according to claim 4, characterized in that, The signal acquisition module also includes: A first signal amplification circuit is connected to the first resonant circuit and the differential signal circuit; The second signal amplification circuit is connected to the second resonant circuit and the differential signal circuit; The third signal amplification circuit is connected to the differential signal circuit.

6. The wall inspection instrument according to claim 1, characterized in that, The wall detection unit includes: An ultrasonic transmitting module, connected to the control unit, is used to transmit ultrasonic waves; An ultrasonic receiving module, connected to the control unit, is used to receive ultrasonic waves; The control unit determines whether there are foreign objects in the wall based on the ultrasonic waves received by the ultrasonic receiving module.

7. The wall inspection instrument according to claim 1, characterized in that, Also includes: The second switching switch is connected to the laser marking unit, the wall detection unit, and the control unit; The control unit controls the second switching switch to control the operation of the laser marking unit and / or the wall detection unit.

8. The wall inspection instrument according to claim 1, characterized in that, The control unit controls the laser marking unit to output a horizontal or vertical laser of the first color, and when it determines that there is a foreign object in the wall based on the detection signal, it controls the wall detection unit to output a horizontal and vertical laser of the second color.

9. The wall inspection instrument according to claim 1, characterized in that, Also includes: A buzzer, connected to the control unit, is used to output a buzzing signal; When the control unit determines that there is a foreign object in the wall based on the detection signal, it controls the buzzer to output a buzzing signal.

10. The wall inspection instrument according to claim 1, characterized in that, Also includes: A level detection unit, connected to the control unit, is used for detecting the levelness of the wall.

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