Extension type lock cylinder hole image acquisition device
By designing a lock core hole image acquisition device including positioning solid distance tooling and camera module with light source, the problem of difficulty in taking clear lock core hole images in emergency unlocking scenes is solved, and the effect of reliable positioning and acquisition of clear images on the lock hole is achieved.
Patent Information
- Application Number
- CN202421829562.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-31
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2034-07-31
AI Technical Summary
In emergency lock-opening burst scenes, it is difficult to capture clear images of the lock core hole, especially when the lock hole structure is small, the light is dim and the environment is limited.
An extended-in lock core hole image acquisition device is designed, including a positioning solid-distance tooling, a camera tooling, a PCB circuit board and a camera module with a light source. The positioning solid-distance tool is embedded in the lock hole through the positioning bump to ensure reliable positioning of the device; the camera module has a light source to assist in lighting and achieve clear image acquisition through rotation and focus mechanisms.
It realizes reliable positioning and acquisition of clear lock core hole images on the keyhole, overcomes the problems of small keyhole structure and dim light, and is suitable for various keyhole environments.
Smart Images
Figure CN223040077U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to an image acquisition device for an inserted lock core hole. Background Art
[0002] In some emergency unlocking scenarios, it is necessary to obtain clear images of the lock core holes. However, the structure of the lock core holes is small, the internal light of the lock core holes is dim, and due to the limitations of the environment where the lock core holes are located, reliable positioning cannot be achieved during shooting. Therefore, it is often difficult to capture usable images of the lock core holes using smartphones and other conventional imaging devices, and even it is difficult to capture clear images of the lock core holes using micro cameras. In addition, most of the lock core holes on the market are currently equipped with a protective cover on the outside, which further increases the difficulty of obtaining clear images of the lock core holes. Summary of the Utility Model
[0003] The purpose of the utility model is to provide an image acquisition device for an inserted lock core hole, which has a simple structure and can be reliably positioned on the lock hole and capture clear images of the lock core hole.
[0004] To achieve the above purpose, the technical solution adopted by the utility model is: an image acquisition device for an inserted lock core hole, including a positioning and distance-fixing tooling, a camera tooling, a PCB circuit board, and a camera module with a light source. The positioning and distance-fixing tooling is a hollow structure that penetrates through the front and back. The front end of the positioning and distance-fixing tooling has a positioning convex block, and the positioning convex block is adapted to the lock hole and is inserted into the lock hole during operation. The camera tooling is a hollow structure with an opening at the front end. The PCB circuit board is arranged inside the camera tooling. The camera module is embedded in the front opening of the camera tooling and protrudes forward. The rear part of the positioning and distance-fixing tooling is sleeved on the outside of the front part of the camera tooling. The rear end of the positioning and distance-fixing tooling has a first connection structure, and the camera tooling has a second connection structure that cooperates with the first connection structure to enable the camera tooling to move back and forth relative to the positioning and distance-fixing tooling. The PCB circuit board is electrically connected to the camera module to collect images of the lock core hole through the camera module under the auxiliary illumination of the light source.
[0005] Furthermore, the positioning and distance-fixing tooling includes a positioning connector and a focusing housing. The rear end of the positioning connector is fixedly connected to the front end of the focusing housing. The front end of the positioning connector has a positioning convex block. A central through hole is opened inside the positioning connector, and the size of the central through hole is adapted to the camera module to allow the camera module to pass through. The focusing housing has a hollow cavity that penetrates through the front and back, and the size of the rear part of the hollow cavity is adapted to the front part of the camera tooling to enable the camera tooling to move back and forth in the hollow cavity.
[0006] Further, the outer side of the rear end of the positioning connecting piece has a first external thread structure, and the inner side of the front end of the hollow cavity of the focusing housing correspondingly has a first internal thread structure that mates with the first external thread structure, so that the rear end of the positioning connecting piece and the front end of the focusing housing are fixedly connected by thread fitting.
[0007] Further, the inner side of the rear end of the hollow cavity of the focusing housing has a second internal thread structure, and the outer side of the middle and rear parts of the camera tooling correspondingly has a second external thread structure that mates with the second internal thread structure, so that the camera tooling moves forward and backward relative to the focusing housing by screwing the camera tooling in and out.
[0008] Further, the in - depth type lock core hole image acquisition device is provided with a plurality of positioning connecting pieces; the plurality of positioning connecting pieces have positioning bumps with different widths to adapt to lock holes of different sizes; one or two positioning bumps are provided on different positioning connecting pieces, and the one or two positioning bumps are located on one side or both sides of the front end of the central through - hole to adapt to different types of lock holes.
[0009] Further, the camera module includes a camera, a light source, and a camera front - extension tube. The rear end of the front - extension tube bracket is embedded in the front - end opening of the camera tooling. The camera and the light source are installed at the front end of the camera front - extension tube, and the connecting wires of the camera and the light source pass through the camera front - extension tube and are electrically connected to the PCB circuit board.
[0010] Further, the inner side of the front part of the positioning and distance - fixing tooling has a third internal thread structure, and the outer side of the front end of the camera front - extension tube correspondingly has a third external thread structure that mates with the third internal thread structure, so as to position the front end of the camera front - extension tube and the camera and the light source thereon through thread fitting.
[0011] Further, the PCB circuit board has a control button module and a USB interface module. A button through - hole is provided in the rear - side part of the camera tooling. The control button module is embedded in the button through - hole and is connected inwardly to the PCB circuit board. A USB through - hole is provided on the rear - end surface of the camera tooling. The USB interface module is embedded in the USB through - hole and is connected inwardly to the PCB circuit board.
[0012] Further, the camera tooling is composed of a upper half - shell and a lower half - shell connected together to facilitate the installation of the PCB circuit board and the camera module.
[0013] Further, a main control circuit based on a BK7231U chip, a Wi-Fi module, a power supply circuit, a lithium battery power monitoring circuit, a low-power control circuit, a control button module, and a USB interface module are provided on the PCB circuit board. The camera module is electrically connected to the main control circuit. The power supply circuit supplies power to the camera module and all circuits on the PCB circuit board. The power supply circuit includes a lithium battery module, a lithium battery charging circuit, and a circuit board power supply mode selection circuit. Description of the Drawings
[0014] Figure 1 is a schematic structural diagram of the retractable lock core hole image acquisition device (in the extended state) according to an embodiment of the present invention;
[0015] Figure 2 is a schematic structural diagram of the retractable lock core hole image acquisition device (in the retracted state) according to an embodiment of the present invention;
[0016] Figure 3 is a schematic structural diagram of the positioning connector in the embodiment of the present invention;
[0017] Figure 4 is a circuit principle block diagram of the retractable lock core hole image acquisition device according to an embodiment of the present invention;
[0018] Figure 5 is a circuit diagram of the main control circuit in the embodiment of the present invention;
[0019] Figure 6 is a circuit diagram of the lithium battery charging circuit in the embodiment of the present invention;
[0020] Figure 7 is a circuit diagram of the circuit board power supply mode selection circuit in the embodiment of the present invention;
[0021] Figure 8 is a circuit diagram of the lithium battery power monitoring circuit in the embodiment of the present invention;
[0022] Figure 9 is a circuit diagram of the low-power control circuit in the embodiment of the present invention. Detailed Embodiments
[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0024] It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present application belongs.
[0025] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular forms are also intended to include the plural forms. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they specify the presence of features, steps, operations, devices, components, and / or combinations thereof.
[0026] As Figure 1-2 shown, this embodiment provides an in-depth type lock core hole image acquisition device, including a positioning and distance-fixing tooling, a camera tooling 1, a PCB circuit board 2, and a camera module with a light source. The positioning and distance-fixing tooling is a hollow structure that penetrates from front to back. The front end of the positioning and distance-fixing tooling has a positioning convex block, which is adapted to the lock hole and is embedded in the lock hole during operation. The camera tooling 1 is a hollow structure with an opening at the front end. The PCB circuit board 2 is arranged inside the camera tooling 1. The camera module is embedded in the front opening of the camera tooling 1 and extends forward into the front end of the positioning and distance-fixing tooling. The rear part of the positioning and distance-fixing tooling is sleeved outside the front part of the camera tooling 1. The rear end of the positioning and distance-fixing tooling has a first connection structure, and the camera tooling 1 has a second connection structure that cooperates with the first connection structure to enable the camera tooling to move back and forth relative to the positioning and distance-fixing tooling. The PCB circuit board 2 is electrically connected to the camera module to collect images of the lock core hole through the camera module under the auxiliary illumination of the light source.
[0027] The positioning and distance-fixing tooling includes a positioning connector 3 and a focusing housing 4. The rear end of the positioning connector 3 is fixedly connected to the front end of the focusing housing 4. As Figure 3 shown, the front end of the positioning connector 3 has a positioning convex block 5. A central through hole is opened inside the positioning connector 3, and the size of the central through hole is adapted to the camera module to allow the camera module to pass through. The focusing housing 4 has a hollow cavity that penetrates from front to back. The size of the rear part of the hollow cavity is adapted to the front part of the camera tooling 1, so that the camera tooling 1 can move back and forth in the hollow cavity.
[0028] The positioning connector 3 is made from a metal cylindrical part through processing by a drilling machine, a cutting machine, a tapping machine, etc. The positioning connector 3 is mainly used to reliably position the device on the lock hole and fix the distance between the camera and the lock core hole to ensure that each time an image of the lock core hole is collected, it is at a relatively fixed distance. The focusing housing 4 is made using 3D printing technology. Its main function is to cooperate with the camera tooling to focus the camera and play a role in protecting the camera tooling. The camera tooling is made of PLA environmental protection material. Its main function is to facilitate the better penetration of the camera into the lock core hole to collect images, place the PCB circuit board, and cooperate with the focusing housing to achieve the focusing of the camera.
[0029] The outer side of the rear end of the positioning connecting piece 3 has a first external thread structure, and the inner side of the front end of the hollow cavity of the focusing outer shell 4 correspondingly has a first internal thread structure that mates with the first external thread structure, so that the rear end of the positioning connecting piece 3 and the front end of the focusing outer shell 4 are fixedly connected by thread fitting.
[0030] The inner side of the rear end of the hollow cavity of the focusing outer shell 4 has a second internal thread structure, and the outer side of the middle and rear parts of the camera tooling 1 correspondingly has a second external thread structure that mates with the second internal thread structure, so that the camera tooling 1 moves forward and backward relative to the focusing outer shell by screwing the camera tooling 1 in and out.
[0031] The inserted lock core hole image acquisition device is provided with a plurality of positioning connecting pieces; the plurality of positioning connecting pieces have positioning protrusions with different widths to adapt to lock holes of different sizes; one or two positioning protrusions are provided on different positioning connecting pieces, and the one or two positioning protrusions are located on one side or both sides of the front end of the central through hole to adapt to different types of lock holes.
[0032] The camera module includes a camera 6, a light source 7 and a camera front extension tube 8. The rear end of the front extension tube holder 8 is embedded in the front end opening of the camera tooling 1. The camera 6 and the light source 7 are installed at the front end of the camera front extension tube 8. The connecting wires of the camera 6 and the light source 7 pass through the camera front extension tube 8 and are electrically connected to the PCB circuit board. In this embodiment, the light source 7 is an LED light source array arranged in a circumferential array outside the camera.
[0033] During the process of the camera tooling 1 driving the camera module to move forward and backward, the camera front extension tube may shake, thus affecting the shooting effect of the camera. Therefore, in this embodiment, the inner side of the front part of the positioning connecting piece 3 of the positioning and spacing tooling has a third internal thread structure, and the outer side of the front end of the camera front extension tube 8 correspondingly has a third external thread structure that mates with the third internal thread structure, so as to position the front end of the camera front extension tube 8 and the camera 6 and the light source 7 thereon through thread fitting.
[0034] The PCB circuit board has a control button module 9 and a USB interface module 10. A button through hole is provided in the rear side part of the camera tooling 1. The control button module 9 is embedded in the button through hole and is connected to the PCB circuit board inwardly. A USB through hole is provided on the rear end face of the camera tooling. The USB interface module 10 is embedded in the USB through hole and is connected to the PCB circuit board inwardly.
[0035] In this embodiment, to facilitate the installation of the PCB circuit board and the camera module, the camera tooling 1 is composed of a upper half shell and a lower half shell connected together.
[0036] In this embodiment, the positioning connecting piece is processed from a metal cylinder part through a drill press, a cutting machine, a tapping machine, etc. The camera tooling is made of PLA environmental protection material.
[0037] Figure 4 is the circuit principle block diagram of the device in this embodiment. As Figure 4 shown, the PCB circuit board is provided with a main control circuit based on the BK7231U chip, a Wi-Fi module, a power supply circuit, a lithium battery power monitoring circuit, a low-power control circuit, a control button module, and a USB interface module. The camera module is electrically connected to the main control circuit. The power supply circuit supplies power to the camera module and all circuits on the PCB circuit board. The power supply circuit includes a lithium battery module, a lithium battery charging circuit, and a circuit board power supply mode selection circuit.
[0038] (1) Main control circuit based on the BK7231U chip: The main control circuit is mainly connected to the camera module. When connecting the camera module, connect the power pin of the camera module to the 3.3V power supply, connect the ground wire to GND, connect the I2C clock pin (SCL) and data pin (SDA) to the I2C_SCL and I2C_SDA pins of the BK7231U respectively. At the same time, also connect the power control pin PWDN and the reset pin RESET to the GPIO pins of the BK7231U, initialize the camera, and adjust the camera output parameters. Read data from the camera module through the I2C port and transmit it to the mobile terminal through the WI-FI module. Its circuit is as Figure 5 shown.
[0039] (2) Circuit board power supply circuit: The circuit board power supply circuit includes a lithium battery charging circuit and a circuit board power supply mode selection circuit. The lithium battery charging circuit is as Figure 6 shown, and uses the input of the USB interface module to charge the lithium battery in the lithium battery module. The circuit board power supply mode selection circuit is as Figure 7As shown, the power supply methods of the circuit board are divided into two types: USB direct power supply and built-in lithium battery power supply. When the VBUS interface is connected, the circuit is powered by USB direct power supply. When the BAT interface is connected, the circuit is powered by the built-in lithium battery. In addition, the ME6214 series of low dropout regulators (LDOs) are used in the circuit to ensure stable power supply. The LDO circuit can work normally when the input voltage is only slightly higher than the output voltage, which makes the LDO circuit very useful in portable battery-powered devices. Since the circuit supports two power supply methods: direct connection to a mobile power supply and its own built-in lithium battery. When the direct power supply method is adopted, the power supply can stably provide an input voltage of 5.0V. At this time, when the actual voltage is greater than the reference voltage, the LDO linear voltage regulation circuit reduces the conduction state by adjusting the components to reduce the output voltage. When the built-in lithium battery power supply method is adopted, since the voltage range of a single lithium battery is 3.0V - 4.2V, as the power in the lithium battery continues to be consumed, the voltage will continue to decrease. And the input voltage of the LDO circuit must be higher than the sum of the output voltage and the voltage drop, that is, above about 3.6V to enable the circuit to work normally. Therefore, when the battery voltage is insufficient, at this time, the LDO linear voltage regulation circuit adjusts the components to increase the conduction state to increase the output voltage to achieve stable power supply for the circuit.
[0040] (3) Lithium battery power monitoring circuit: The lithium battery power monitoring circuit provides the lithium battery voltage information for the power supply circuit on the one hand, and records the lithium battery power information and sends it to the mobile terminal through the WI-FI module for display on the other hand, so as to better monitor the power consumption of the acquisition device. In order to reduce unnecessary power consumption, the lithium battery power does not need to be monitored in real time. A switch circuit is designed. Through the clock information provided by the crystal oscillator circuit, the lithium battery voltage detection is turned on at high level to achieve the function of timing monitoring. Such a design can save more power of the circuit. The lithium battery power monitoring circuit is as Figure 8 shown.
[0041] (4) Low-power control circuit: Since the in-depth image acquisition device requires a small volume and strong portability, the lithium battery capacity in this device is relatively limited. In order to further improve the battery life and extend the usage time of the device, a low-power control module is designed in this circuit, as Figure 9 shown. After the device is powered on, when the self-locking button is pressed, the circuit stops supplying power to the BK7231U chip and the camera module, and only keeps the ME6214 series of linear voltage regulators running normally. When the self-locking button is pressed again, the circuit resumes normal power supply.
[0042] The working process of the inserted lock core hole image acquisition device provided by the present utility model is as follows: When it is necessary to acquire the image of the lock core hole, a positioning connecting piece adapted to the lock hole is selected and fixedly connected to the focusing housing. Then, the positioning convex block of the device is clamped in the lock hole at the front end of the lock core hole, so as to reliably position the device on the lock hole. Rotate the camera tooling, and the camera tooling drives the camera front extension tube and the camera and light source at its front end to extend forward. At this time, turn on the light source on the camera module to assist in illuminating the lock core hole, and further rotate the camera tooling to focus the camera, so as to achieve rapid and correct focusing of the camera. After focusing, a clear image of the lock core hole is captured by the camera and then transmitted to the main control chip for subsequent processing.
[0043] The above is only the preferred embodiment of the present utility model, and it is not a limitation of the present utility model in other forms. Any person skilled in the art may use the technical content disclosed above to make changes or modifications into equivalent embodiments with equivalent changes. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution content of the present utility model still belong to the protection scope of the technical solution of the present utility model.
Claims
1. A device for collecting images of an inserted lock core hole, characterized in that: It includes a positioning and fixing tooling, a camera tooling, a PCB circuit board and a camera module with a light source. The positioning and fixing tooling is a hollow structure that passes through from front to back. The front end of the positioning and fixing tooling is provided with a positioning protrusion, and the positioning protrusion is adapted to the lock hole and embedded in the lock hole during operation. The camera tooling is a hollow structure with a front opening. The PCB circuit board is arranged in the camera tooling, and the camera module is embedded in the front opening of the camera tooling and extends forward. The rear part of the positioning and fixing tooling is sleeved on the outer side of the front part of the camera tooling. The rear end of the positioning and fixing tooling has a first connecting structure, and the camera tooling has a second connecting structure that cooperates with the first connecting structure to enable the camera tooling to move forward and backward relative to the positioning and fixing tooling. The PCB circuit board is electrically connected to the camera module so that the image of the lock core hole is captured through the camera module under the auxiliary lighting of the light source.
2. The image acquisition device for the inserted lock core hole according to claim 1, characterized in that: The positioning and fixing distance tooling includes a positioning connector and a focusing shell, the rear end of the positioning connector is fixedly connected to the front end of the focusing shell; the front end of the positioning connector is provided with a positioning protrusion, and a central through hole is opened in the positioning connector, and the size of the central through hole is adapted to the camera module so that the camera module can pass through; the focusing shell has a hollow cavity that passes through the front and back, and the size of the rear part of the hollow cavity is adapted to the front part of the camera tooling so that the camera tooling can move back and forth in the hollow cavity.
3. The image acquisition device for the inserted lock core hole according to claim 2, characterized in that: The rear end of the positioning connector has a first external thread structure on the outside, and the front end of the hollow cavity of the focusing housing has a first internal thread structure that matches the first external thread structure, so that the rear end of the positioning connector is fixedly connected to the front end of the focusing housing through threaded matching.
4. The image acquisition device for the inserted lock core hole according to claim 2, characterized in that: The inner side of the rear end of the hollow cavity of the focusing shell has a second internal thread structure, and the outer side of the rear part of the camera tooling correspondingly has a second external thread structure that cooperates with the second internal thread structure, so that the camera tooling can move forward and backward relative to the focusing shell by screwing the camera tooling in and out.
5. The image acquisition device for inserting a lock core hole according to claim 2, characterized in that: The inserted lock core hole image acquisition device is equipped with multiple positioning connectors; the multiple positioning connectors have positioning protrusions with different widths to adapt to lock holes of different sizes; different positioning connectors have one or two positioning protrusions, and the one or two positioning protrusions are located on one side or both sides of the front end of the central through hole to adapt to different types of lock holes.
6. The image acquisition device for inserting a lock core hole according to claim 1, characterized in that: The camera module includes a camera, a light source and a camera front extension tube. The rear end of the front extension tube frame is embedded in the front end opening of the camera tooling. The camera and the light source are installed at the front end of the camera front extension tube. The connecting wires of the camera and the light source pass through the camera front extension tube and are electrically connected to the PCB circuit board.
7. The image acquisition device for inserting a lock core hole according to claim 6, characterized in that: The inner side of the front part of the positioning and fixing tool has a third internal thread structure, and the outer side of the front end of the camera front extension tube correspondingly has a third external thread structure that cooperates with the third internal thread structure, so as to position the front end of the camera front extension tube and the camera and light source thereon through thread cooperation.
8. The image acquisition device for inserting a lock core hole according to claim 1, characterized in that: The PCB circuit board is provided with a control button module and a USB interface module. A button through hole is opened on the rear side of the camera tooling. The control button module is embedded in the button through hole and is connected inwardly to the PCB circuit board. A USB through hole is opened on the rear working end face of the camera. The USB interface module is embedded in the USB through hole and is connected inwardly to the PCB circuit board.
9. The image acquisition device for inserting a lock core hole according to claim 1, characterized in that: The camera tooling is composed of an upper half shell and a lower half shell connected together, so as to facilitate the installation of a PCB circuit board and a camera module.
10. The image acquisition device for insertable lock core hole according to claim 1, characterized in that: The PCB circuit board is provided with a main control circuit based on the BK7231U chip, a Wi-Fi module, a power supply circuit, a lithium battery power monitoring circuit, a low-power control circuit, a control button module and a USB interface module. The camera module is electrically connected to the main control circuit. The power supply circuit supplies power to the camera module and all circuits on the PCB circuit board. The power supply circuit includes a lithium battery module, a lithium battery charging circuit and a circuit board power supply mode selection circuit.