A metal detector instrument

Abstract

The application discloses a metal detector, and relates to the technical field of metal detection, which comprises an inductor, a control module and an indicating part. The inductor is used for generating an induction signal when a metal part is sensed in a power-on state. The control module is connected with the inductor in signal and is used for processing the received induction signal, judging whether the metal part is detected, and outputting a control signal. The indicating part is connected with the control module in signal and is used for indicating the position of the metal part. The metal detector solves the problems of low efficiency, high strength, high risk, poor precision and high cost of the current positioning mode of the vehicle floor metal part.

Description

Technical Field

[0001] This application relates to the field of metal detection technology, and in particular to a metal detection instrument. Background Technology

[0002] With the continuous development of rail transit vehicle manufacturing technology, the installation process of vehicle floor systems is receiving increasing attention. Currently, all production models require floor installation. Floor components typically include embedded metal parts (such as bolt sleeves, nut plates, mounting brackets, etc.) for subsequent fixing of large interior components such as seats, electrical cabinets, and kitchen equipment. On average, each car has approximately 30 floor metal parts, with dining car models having as many as 60, which are densely distributed and require high positional precision.

[0003] After the floor panel itself is installed, the floor covering is laid. The floor covering completely covers the floor surface, concealing all embedded metal parts and making it impossible for installers to visually identify their exact locations. In subsequent processes, when installing in-vehicle equipment in specific locations, the location of the corresponding metal part must first be accurately located. The floor covering at that location must then be cut away before bolt connections and other operations can be performed. Currently, the industry commonly uses a combination of manual measurement and manual probing to locate the metal parts. The specific process is as follows: Installers use measuring tools such as tape measures to mark the approximate location of the metal parts on the floor covering surface according to the dimensions on the drawings. Then, they repeatedly press the floor covering with their fingers to determine if there are any unsupported areas (the floor covering above the metal parts will slightly sag or change elasticity due to lack of support), thus confirming its precise boundaries. However, the above detection method has several problems, including:

[0004] 1. Low efficiency: Dozens of metal parts need to be positioned for each vehicle, and the entire process relies on manual measurement and probing. Positioning a single part takes a long time, which seriously affects the overall production cycle.

[0005] 2. High labor intensity: Pressing the floor cloth repeatedly with your fingers for a long time can easily lead to finger fatigue, soreness, or even cramps, especially in batch operations.

[0006] 3. High safety risks: Using a utility knife when your fingers are fatigued can easily cause cuts; there may be tiny foreign objects (such as metal shavings or plastic particles) on the surface of the floor cloth, which may prick your fingers when pressing.

[0007] 4. Large positioning error: Manual measurement has cumulative errors, the probing method relies on experience and is easily affected by the material, tension and condition of the flooring, often resulting in positional deviation;

[0008] 5. High rework costs: Once the positioning is wrong, the flooring fabric cut in the wrong place cannot be repaired and the whole thing needs to be replaced, resulting in material waste and construction delays;

[0009] 6. Rapid tool wear and tear: The tape measure is frequently pulled, bent, and damaged, increasing the consumption of auxiliary materials;

[0010] In summary, current methods for locating metal components on vehicle floors remain in the traditional manual stage, which suffers from numerous drawbacks such as low efficiency, high strength, high risk, poor accuracy, and high cost, becoming a key bottleneck restricting the improvement of vehicle assembly efficiency and quality. Therefore, there is an urgent need for a non-contact, efficient, accurate, safe, and adjustable-depth metal component positioning technology to replace the existing manual operation mode. Utility Model Content

[0011] The purpose of this application is to provide a metal detection instrument that solves the problems of low efficiency, high strength, high risk, poor accuracy, and high cost of current methods for locating metal parts on vehicle floors.

[0012] To achieve the above objectives, this application provides a metal detection instrument, comprising:

[0013] A sensing element, used to generate a sensing signal when a metal part is sensed in a powered state;

[0014] The control module is connected to the sensor and is used to process the received sensor signals, determine whether a metal part is detected, and output a control signal.

[0015] An indicator, connected to the control module, is used to indicate the position of the metal component.

[0016] In some embodiments, the metal detector further includes an adjustment module, which is signal-connected to the control module and is used to adjust the voltage amplitude output to the sensing element to change the intensity of the induced magnetic field generated by the sensing element, thereby adjusting the detection depth.

[0017] In some embodiments, the sensor, the control module, the indicator, and the adjustment module are integrated into the same handheld housing.

[0018] In some embodiments, the sensing element is an induction coil, which generates an alternating magnetic field when energized and oscillates attenuated due to eddy current effect when near a metal component, thereby generating the sensing signal.

[0019] In some embodiments, the control module includes an oscillation detection unit for monitoring changes in the oscillation state of the induction coil and converting such changes into a switching signal output to the indicator.

[0020] In some embodiments, the indicator is an indicator light, which is disposed on the surface of the instrument housing and is used to indicate the position of a metal component by lighting up or flashing.

[0021] In some embodiments, the metal detector further includes a power module and a charging port. The power module includes a lithium battery and a power switch, which are used to provide working power to the sensing element, the control module and the indicator. The charging port is electrically connected to the lithium battery and is used to connect an external charger to cyclically charge the lithium battery.

[0022] In some embodiments, the number of the sensors, the control module, and the indicator are the same and there are multiple of each. The control module is located between the corresponding indicator and the sensor, and signal transmission is achieved through a wiring harness.

[0023] In some embodiments, the metal detector further includes a projection module that is triggered when the sensor detects a metal component to project a mark directly onto the floor surface.

[0024] In some embodiments, the marking includes at least one of a red dot, a crosshair, and an outline, used to mark the position directly above the metal part.

[0025] Compared to the aforementioned background technology, the metal detection instrument provided in this application includes a sensor, a control module, and an indicator. The sensor generates a sensing signal when it detects a metal component while powered on. The control module is signal-connected to the sensor, processes the received sensing signal, determines whether a metal component is detected, and outputs a control signal. The indicator is signal-connected to the control module and indicates the position of the metal component.

[0026] The advantages of this metal detector setup include: the sensor quickly detects metal parts and generates a signal when powered on; the control module processes the signal in real time; and the indicator shows the location of the metal part in real time. This effectively filters environmental interference, improves detection reliability, reduces manual inspection time, lowers labor intensity, and increases overall detection efficiency. Furthermore, the cooperation between the sensor and control module accurately determines the presence of metal parts and clearly marks their location, reducing false positives and false negatives. In addition, the sensor can complete the detection without contacting the metal part, avoiding potential safety risks and ensuring the safety of the equipment and users. Automated detection also reduces reliance on manual labor, lowers tool wear and tear, and ultimately reduces overall costs in the long run. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this application or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the structure of the metal detector in the embodiments of this application.

[0029] Figure 2 for Figure 1 The diagram shows the working principle of a metal detector.

[0030] in:

[0031] 1-Power switch; 2-Charging port; 3-Indicator; 4-Lithium battery; 5-Sensor; 51-Alternating magnetic field; 6-Control module; 7-Wire harness; 8-Adjustment module. Detailed Implementation

[0032] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0033] To enable those skilled in the art to better understand the present application, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0034] It should be noted that the directional terms such as "upper end," "lower end," "left side," and "right side" mentioned below are defined based on the accompanying drawings in the instruction manual.

[0035] Please refer to Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the structure of the metal detector in the embodiments of this application. Figure 2 for Figure 1 The diagram shows the working principle of a metal detector.

[0036] The metal detector provided in this application includes a sensor 5, a control module 6, and an indicator 3.

[0037] The sensing element 5 is used to generate a sensing signal when it senses a metal component while the device is energized. For example, the sensing signal may be one or more combinations of oscillation amplitude change, frequency shift, or oscillation stop signal.

[0038] The control module 6 is connected to the sensor 5. The control module 6 is used to process the received sensing signals, determine whether a metal part is detected, and output a control signal.

[0039] Indicator 3 is connected to control module 6 via signal, and is used to indicate the position of the metal part. Indicator 3 can directly provide feedback on the detection results through visual or audible means, allowing users to quickly understand and take action.

[0040] Of course, depending on actual needs, the number of sensors 5, control modules 6, and indicators 3 is the same and there are multiple of each. The control module 6 is located between the corresponding indicator 3 and sensor 5, and signal transmission is achieved through the wiring harness 7.

[0041] Specifically, when the sensor 5 detects a metal component, it generates an alternating magnetic field 51. Sliding across the floor mat, as it passes the location of the metal component, eddy currents are generated within the component, causing the oscillation to decay and eventually stop. The changes in oscillation and cessation of the oscillator transmit signals to the control module 6 for processing and conversion into switching signals. These signals trigger the drive controller and are transmitted via wiring harness 7 to the indicator 3. The indicator 3 then outputs the position information of the metal component, achieving non-contact detection of the floor metal component. Repeating this process allows for continuous and uninterrupted detection of the floor metal components on the floor mat and indication of their positions.

[0042] In other words, when the sensor 5 is powered on, it can quickly sense the metal part and generate a sensing signal. The control module 6 receives the sensing signal and processes the signal in real time, and at the same time generates a control signal to control the indicator 3 to work. The indicator 3 can indicate the position of the metal part in real time.

[0043] This metal detector design effectively filters out environmental interference, improves detection reliability, reduces manual inspection time, lowers labor intensity, and increases overall detection efficiency. Simultaneously, the cooperation between sensor 5 and control module 6 accurately determines the presence of metal components and clearly marks their location via indicator 3, reducing false positives and false negatives. Furthermore, sensor 5 can complete detection without contacting the metal component, avoiding potential safety risks and ensuring the safety of both the equipment and the user. Automated detection also reduces reliance on manual labor, lowers tool wear and tear, and ultimately reduces overall costs in the long run.

[0044] In summary, this metal detector achieves efficient, accurate, safe, and low-cost metal detection through the coordinated operation of the sensor 5, control module 6, and indicator 3. It solves the problems of low efficiency, high false judgment rate, and complex operation in traditional detection methods, and has significant technical advantages and broad market prospects.

[0045] Furthermore, in view of the problem that the depth and size of the floor metal parts of different car models are different in the existing technology, and the existing methods cannot flexibly adjust the detection sensitivity and have poor versatility, the metal detector of this application embodiment also includes an adjustment module 8.

[0046] The adjustment module 8 is connected to the control module 6 by signal. The adjustment module 8 is used to adjust the voltage amplitude output to the sensing element 5 to change the strength of the induced magnetic field, thereby realizing the adjustment of the detection depth.

[0047] In this embodiment, the detection depth and voltage amplitude of the sensor 5 are calibrated, and only one calibration is needed during production line debugging: for example, when the detection depth = 1mm, the calibrated voltage = 3V, and when the detection depth = 5mm, the calibrated voltage = 18V. Of course, the calibration data for the detection depth and voltage amplitude of the sensor 5 are not limited to this, and the calibration data can be adjusted according to the actual vehicle model.

[0048] In this way, when the detection depth changes, the output voltage is adjusted by the adjustment module 8 to change the detection depth of the sensor 5, thereby achieving the adjustment of different detection depths for different vehicle models.

[0049] In some embodiments, the sensor 5, control module 6, indicator 3 and adjustment module 8 are integrated into the same handheld housing, which facilitates operation and detection.

[0050] In some embodiments, the sensing element 5 is an induction coil, which generates an alternating magnetic field 51 when energized and oscillates attenuated due to eddy current effect when close to a metal component, thereby generating an induction signal.

[0051] In some embodiments, the control module 6 includes an oscillation detection unit, which monitors changes in the oscillation state of the induction coil and converts these changes into a switching signal output to the indicator 3.

[0052] In some embodiments, the indicator 3 is an indicator light, which is disposed on the surface of the instrument housing and is used to indicate the position of the metal parts by lighting up or flashing.

[0053] In other words, electromagnetic induction is achieved through an induction coil. After induction, the control module 6 transmits a signal to the indicator light through the wiring harness 7. The position of the lit light indicates the location of the foreign metal, thus achieving the purpose of non-contact foreign metal detection.

[0054] In some embodiments, the metal detector further includes a power module and a charging port 2. The power module includes a lithium battery 4 and a power switch 1. The lithium battery 4 is used to provide working power for the sensing element 5, the control module 6 and the indicator 3. The charging port 2 is electrically connected to the lithium battery 4 and is used to connect an external charger to cyclically charge the lithium battery 4.

[0055] In this way, the lithium battery 4 can be charged by an external charger through the charging port 2 to achieve the purpose of recycling, and the lithium battery 4 can supply power to the induction coil and control module 6.

[0056] Building upon the above, the metal detector also includes a projection module, which is triggered when the sensor 5 detects a metal component to project a mark directly onto the floor surface. This mark includes at least one of a red dot, a crosshair, or an outline frame, used to indicate the position directly above the metal component.

[0057] For example, a miniature laser projection module (such as a MEMS micro-projector or laser linear array) can be integrated at the front or bottom of the device.

[0058] In this way, when the control module 6 detects a metal signal, it not only illuminates the indicator light but also triggers the projector to project markings directly onto the floor surface: for example, red dots, crosshairs, or outlines, precisely marking the position directly above the metal. Of course, it can also project text such as "METAL" or "screw location." This allows for synchronous calibration between the projected position and the coil center, achieving a WYSIWYG (What You See Is What You Get) result.

[0059] Using the above setup, there's no need to look down at the indicator lights, and the operator's gaze doesn't need to leave the work surface. When multiple people are collaborating, the markings are visible, improving collaboration efficiency, and it's especially suitable for dimly lit workshop environments. By combining detection and marking into one, in-situ visual positioning is achieved.

[0060] In summary, using the metal detectors described above can bring the following benefits:

[0061] 1. It can be reused in various car models, reducing the risk of errors, improving work efficiency, and ensuring product quality;

[0062] 2. This device can quickly and intuitively determine the location of metal parts under the floor during construction, achieving time-saving and labor-saving effects;

[0063] 3. This device can reduce damage to the floor fabric caused by locating metal parts;

[0064] 4. By using this device, the safety hazard caused by construction workers continuing to work due to finger fatigue after finding metal parts can be solved;

[0065] 5. This device can simplify the construction process, shorten the construction time, improve work efficiency, and achieve the goal of reducing costs and increasing efficiency.

[0066] It should be noted that in this specification, relational terms such as first and second are used only to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.

[0067] The metal detection instrument provided in this application has been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are only for the purpose of helping to understand the solution and core ideas of this application. It should be noted that those skilled in the art can make several improvements and modifications to this application without departing from the principles of this application, and these improvements and modifications also fall within the protection scope of this application.

Claims

1. A metal detection instrument, characterized in that, include: A sensing element, used to generate a sensing signal when a metal part is sensed in a powered state; The control module is connected to the sensor and is used to process the received sensor signals, determine whether a metal part is detected, and output a control signal. An indicator, connected to the control module, is used to indicate the position of the metal component.

2. The metal detector as described in claim 1, characterized in that, The metal detector also includes an adjustment module, which is signal-connected to the control module and is used to adjust the voltage amplitude output to the sensing element in order to change the intensity of the induced magnetic field generated by the sensing element and thus adjust the detection depth.

3. The metal detector as described in claim 2, characterized in that, The sensor, the control module, the indicator, and the adjustment module are integrated into the same handheld housing.

4. The metal detector as described in claim 1, characterized in that, The sensing element is an induction coil, which generates an alternating magnetic field when energized, and the oscillation attenuates due to the eddy current effect when it is close to a metal component, thereby generating the sensing signal.

5. The metal detector as described in claim 4, characterized in that, The control module includes an oscillation detection unit for monitoring changes in the oscillation state of the induction coil and converting these changes into a switching signal output to the indicator.

6. The metal detector as described in claim 1, characterized in that, The indicator is an indicator light, which is set on the surface of the instrument housing and is used to indicate the position of metal parts by lighting up or flashing.

7. The metal detector as described in claim 1, characterized in that, The metal detector also includes a power module and a charging port. The power module includes a lithium battery and a power switch, which are used to provide working power to the sensing element, the control module and the indicator. The charging port is electrically connected to the lithium battery and is used to connect an external charger to cyclically charge the lithium battery.

8. The metal detector as described in claim 1, characterized in that, The number of the sensors, the control module, and the indicator is the same, and there are multiple of each. The control module is located between the corresponding indicator and the sensor, and the signal is transmitted through a wiring harness.

9. The metal detector as described in any one of claims 1-8, characterized in that, The metal detector also includes a projection module, which is triggered when the sensor detects a metal component to project a mark directly onto the floor surface.

10. The metal detector as described in claim 9, characterized in that, The markings include at least one of red dots, crosshairs, and outlines, used to indicate the position directly above the metal component.

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