A four-camera stamp device for all-around camera evidence taking

Abstract

The utility model discloses a four -camera seal device of all -round camera takes evidence, including the casing, the casing bottom is equipped with the seal area, still include: first image acquisition module, be located the casing front, second image acquisition module, be located the seal area, third image acquisition module, be located the casing upper end, fourth image acquisition module, be located the casing tail, main control module respectively with first image acquisition module, second image acquisition module, third image acquisition module with fourth image acquisition module electric connection for controlling each module in standard seal time window synchronous start, realize the blind arealess whole process video recording, the utility model discloses through setting up the camera in the seal casing front, upper, lower, tail four -way and by main control module synchronous video recording, realized the all -round dead angle collection of use printing process, eliminate the tail operation blind area, effectively prevent the malpractice of being inserted or abstracted in the middle of use printing file.

Description

Technical Field

[0001] This utility model relates to the field of intelligent seal technology, and in particular to a four-camera seal device for all-round video evidence collection. Background Technology

[0002] Existing three-camera structures have become the primary solution, capable of capturing most of the important information during seal usage. However, with technological advancements and market development, these multi-camera smart seal devices still have certain limitations in practical applications, especially regarding blind spots at the rear. For example, traditional three-camera structures typically only monitor the sealing process from the front and back, but when operating at the rear of the seal, it's difficult to completely prevent the insertion or removal of documents during the sealing process, leading to potential seal fraud. This not only affects the transparency and security of the sealing process but also poses significant risks to businesses and users. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings of the existing technology. In order to achieve the above purpose, a four-camera stamp device for all-round video evidence collection is adopted to solve the problems mentioned in the background technology.

[0004] A four-camera stamp device for omnidirectional video evidence collection includes a housing, the bottom of which has an imprint area; and further includes: The first image acquisition module is located at the front end of the housing and is used to acquire forward video information of the printing environment; The second image acquisition module is located in the printing area and is used to acquire images of the printed documents below the printing surface. The third image acquisition module is located at the upper end of the housing and is used to acquire the identity information of the person who uses the seal. The fourth image acquisition module is located at the rear of the housing and is used to acquire rear-facing video information of the printing environment. The main control module is electrically connected to the first image acquisition module, the second image acquisition module, the third image acquisition module, and the fourth image acquisition module, respectively, and is used to control each module to start synchronously within the standard printing time window to achieve full recording without blind spots.

[0005] As a further embodiment of this utility model: a non-isolated visible overlapping area is provided between the printing area and the shell. This area has a ring-shaped or strip-shaped transparent structure and is used to monitor the document edge in real time to prevent splicing or replacement.

[0006] As a further embodiment of this invention, a memory is also included, connected to the main control module, for encrypted storage of image and video data acquired by each image acquisition module, and for supporting timestamp synchronization metadata writing.

[0007] As a further embodiment of this utility model: the second image acquisition module is embedded in the bottom center of the ink acquisition module. The ink acquisition module is hinged to the housing through a side-flipping mechanism, and can be flipped outward to expose the printing surface and camera when printing.

[0008] As a further aspect of this invention: the ink extraction module is equipped with an ink detection sensor to monitor the remaining ink level and communicate with the main control module.

[0009] As a further embodiment of this utility model: a display module is provided at the top of the housing. The display module is a touch screen, which is used to display the printing status, system prompts and real-time preview of the captured image, and to receive user commands through a graphical interface.

[0010] As a further embodiment of this utility model: the first image acquisition module, the third image acquisition module, and the fourth image acquisition module all adopt a wide-angle high-definition camera, wherein the fourth image acquisition module is equipped with an anti-obstruction detection module for identifying the insertion of foreign objects at the tail.

[0011] As a further embodiment of this utility model: the main control module is connected to an external remote seal event response logic module, and when abnormal behavior is detected, it feeds back an alarm signal, including sound prompts, light flashing and data marking functions.

[0012] As a further aspect of this utility model, it also includes a communication module that supports 4G / 5G or Wi-Fi communication, used to upload the encrypted data packet to the cloud server in real time for verification and filing.

[0013] As a further aspect of this utility model, the communication module also supports near-field communication protocol or Bluetooth communication for identity handshake and temporary key exchange with authorized terminal devices.

[0014] Compared with the prior art, the present invention has the following technical advantages: By employing the aforementioned technical solution, four image acquisition modules are installed at the front, top, below the seal surface, and rear of the casing. These modules are controlled by the main control module to simultaneously start recording during seal application, capturing forward and rear-facing video of the seal application environment, images of the document being sealed, and the user's identity information. This design effectively solves the problem of blind spots in the monitoring of the rear of traditional smart seals, achieving comprehensive recording of the entire seal application process. This significantly prevents fraudulent activities such as inserting or replacing documents at the rear during the seal application process, greatly improving the security and reliability of seal application. Attached Figure Description

[0015] The specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings: Figure 1This is a schematic diagram of the structure of the four-camera seal device according to an embodiment of this application; Figure 2 This is a bottom view of the four-camera stamp device according to an embodiment of this application; Figure 3 This is a connection diagram of the main control module in an embodiment of this application; Figure 4 This is a front view schematic diagram of a four-camera stamp device according to an embodiment of this application; Figure 5 This is a rear view schematic diagram of a four-camera stamp device according to an embodiment of this application.

[0016] In the diagram: 1. Housing; 2. Printing area; 3. First image acquisition module; 4. Second image acquisition module; 5. Third image acquisition module; 6. Main control module; 7. Memory; 8. Ink extraction module; 9. Display module; 10. Visible overlapping area; 11. Fourth image acquisition module. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please refer to Figure 1 In this embodiment of the utility model, a four-camera stamp device for omnidirectional video evidence collection includes a housing 1, the bottom of which is provided with an imprint area 2; it also includes: The first image acquisition module 3 is located at the front end of the housing 1 and is used to acquire forward video information of the printing environment; The second image acquisition module 4 is located in the printing area 2 and is used to acquire the image of the printed document below the printing surface; The third image acquisition module 5 is located at the upper end of the housing 1 and is used to acquire the identity information of the person who uses the seal. The fourth image acquisition module 11 is located at the tail of the housing 1 and is used to acquire tail-direction video information of the printing environment. The main control module 6 is electrically connected to the first image acquisition module 3, the second image acquisition module 4, the third image acquisition module 5, and the fourth image acquisition module 11, respectively, and is used to control each module to start synchronously within the standard printing time window to achieve full recording without blind spots.

[0019] In this embodiment, a non-disconnected visible overlapping area 10 is provided between the printing surface area 2 and the housing 1. This area has a ring-shaped or strip-shaped transparent structure and is used to monitor the document edges in real time to prevent splicing or replacement. Specifically, the visible overlapping area 10 is made of a ring-shaped window of high-transparency scratch-resistant acrylic material, with a width of 3-5mm, and is set around the printing surface area 2. This allows the operator to observe the relative position of the document edges and the stamp housing 1 in real time, effectively identifying whether the document has been moved, replaced, or has multiple pages included.

[0020] In this embodiment, a memory 7 is also included, connected to the main control module 6, for encrypted storage of image and video data acquired by each image acquisition module, and supports timestamp synchronization metadata writing. In practical applications, the memory 7 uses an eMMC chip with a capacity of 64GB. The main control module 6 encrypts the stored data in real time, and each data file embeds a timestamp with nanosecond precision and a camera ID identifier to ensure that the data is tamper-proof and traceable.

[0021] like Figure 2 The diagram shows a schematic representation of the bottom of the four-camera stamp device. In this embodiment, the second image acquisition module 4 is embedded in the bottom center of the ink-taking module 8. The ink-taking module 8 is hinged to the housing 1 via a side-flipping mechanism, allowing it to flip outwards to expose the printing surface and camera during printing. Specifically, the ink-taking module 8 is driven by a micro stepper motor and can achieve a 150-degree rotation under the control of the main control module 6, enabling the second image acquisition module 4 to take high-definition pictures of the document surface while ensuring full contact between the printing surface and the document.

[0022] In this embodiment, the ink dispensing module 8 is equipped with an ink detection sensor to monitor the ink level and communicate with the main control module 6. Based on the principle of infrared photoelectric detection, the ink level is monitored in real time. When the ink level is lower than a preset threshold, the main control module 6 sends a warning message to the display module 9 to remind the user to replenish the ink in time.

[0023] like Figure 3 The diagram shown is a connection schematic of the main control module. In this embodiment, a display module 9 is provided at the top of the housing 1. The display module 9 is a touch screen, used to display the stamping status, system prompts, and real-time preview of captured images, and to receive user commands through a graphical interface. Specifically, it adopts a 2.4-inch IPS capacitive touch screen with a resolution of 320*240, which can display the images captured by four cameras, stamping status indicators, and system operation menus in real time. Users can perform operations such as stamping confirmation and parameter settings through the touch screen.

[0024] In this embodiment, the first image acquisition module 3, the third image acquisition module 5, and the fourth image acquisition module 11 all employ wide-angle high-definition cameras. The fourth image acquisition module 11 is equipped with an anti-obstruction detection module to identify foreign object insertion at the tail. The fourth image acquisition module 11 uses a 120-degree wide-angle lens and is equipped with infrared auxiliary illumination. Its anti-obstruction detection module analyzes the video stream in real time using an inter-frame difference algorithm. When abnormal obstruction in the tail area is detected, it immediately sends an alarm signal to the main control module 6.

[0025] In this embodiment, the main control module 6 is connected to an external remote seal event response logic module, and when abnormal behavior is detected, it feeds back an alarm signal, including sound prompts, light flashing and data marking functions.

[0026] This embodiment also includes a communication module that supports 4G / 5G or Wi-Fi communication. This module is used to upload encrypted seal application data packets to a cloud server in real time for verification and filing. The communication module employs a multi-mode communication scheme, prioritizing 5G network for data transmission and automatically switching to 4G or Wi-Fi when network signal is weak, ensuring that seal application data is uploaded to the cloud management platform in real time.

[0027] In this embodiment, the communication module also supports near-field communication protocol or Bluetooth communication for identity handshake and temporary key exchange with authorized terminal devices. Specifically, the device is equipped with an NFC module and a Bluetooth 5.2 chip. Users can perform near-field authentication via an authorized mobile app, establish a secure connection, and exchange temporary session keys to ensure the security of data transmission.

[0028] like Figure 4 As shown, the diagram is a front view schematic of the four-camera stamp device; like Figure 5 As shown, the diagram is a rear view of the four-camera stamp device. Specific Implementation Example 2: In another embodiment of this utility model, the image acquisition module may consist of a first image acquisition module 3 (located at the front end of the housing 1), a third image acquisition module 5 (located at the upper end of the housing 1), and a fourth image acquisition module 11 (located at the rear end of the housing 1). That is, in this variant, the second image acquisition module 4 located in the printing area 2 is removed, retaining only the monitoring capabilities in the front, top, and rear directions. Although this solution cannot capture high-definition details of the printed text, the combination of the first three modules can still achieve the basic functions of forward monitoring of the printing environment, user authentication, and prevention of tail-end fraud, making it particularly suitable for scenarios where the requirements for printed text clarity are not high but process monitoring and anti-fraud are highly valued. This variant is still within the protection scope of this patent. Specific Implementation Example 3: In another embodiment of this utility model, the image acquisition module may consist of a first image acquisition module 3 (located at the front end of the housing 1), a second image acquisition module 4 (located in the printing area 2), and a fourth image acquisition module 11 (located at the rear end of the housing 1). That is, in this variant, the third image acquisition module 5 located at the upper end of the housing 1 is removed, and identity authentication is performed using fingerprints or other authorization codes. This solution, through the combination of three cameras in the printing area 2, the front end, and the rear end, effectively ensures the functions of capturing the content of stamped documents and monitoring rear operations, and is suitable for scenarios where personnel authorization does not require facial recognition. This variant is still within the protection scope of this patent.

[0031] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this invention, and no reference numerals in the claims should be construed as limiting the scope of the claims.

[0032] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A four-camera stamp device for all-around camera forensics, comprising a shell (1), the bottom end of the shell (1) is provided with a stamping area (2); characterized in that, Also includes: The first image acquisition module (3) is located at the front end of the housing (1) and is used to acquire forward video information of the printing environment; The second image acquisition module (4) is located in the printing area (2) and is used to acquire the image of the printed document below the printing surface; The third image acquisition module (5) is located at the upper end of the housing (1) and is used to acquire the identity information of the person who uses the seal. The fourth image acquisition module (11) is located at the tail of the housing (1) and is used to acquire tail-direction video information of the printing environment; The main control module (6) is electrically connected to the first image acquisition module, the second image acquisition module, the third image acquisition module, and the fourth image acquisition module, respectively, and is used to control each module to start synchronously within the standard printing time window to achieve full recording without blind spots.

2. The four-camera evidence taking forensic stamp device according to claim 1, wherein, A non-isolated visible overlapping area (10) is provided between the printing area (2) and the shell (1). This area has a ring-shaped or strip-shaped transparent structure and is used to monitor the edges of the document in real time to prevent splicing or replacement.

3. The four-camera evidence taking forensic stamp apparatus of claim 1, wherein, It also includes a memory (7), which is connected to the main control module (6) for encrypted storage of image and video data acquired by each image acquisition module, and supports timestamp synchronization metadata writing.

4. The four-camera evidence taking forensic stamp apparatus of claim 1, wherein, The second image acquisition module (4) is embedded in the bottom center of the ink acquisition module (8). The ink acquisition module (8) is hinged to the housing (1) through a side flipping mechanism, and can be flipped outward to expose the printing surface and camera when printing.

5. The four-camera evidence taking forensic all-around stamping device according to claim 4, characterized in that, The ink extraction module (8) is equipped with an ink detection sensor to monitor the ink balance and communicate with the main control module.

6. The four-camera stamp device for all-around video evidence collection according to claim 1, characterized in that, The top of the housing (1) is provided with a display module (9), which is a touch screen used to display the printing status, system prompts and real-time preview of the acquired images, and to receive user instructions through a graphical interface.

7. The four-camera stamp device for all-around video evidence collection according to claim 1, characterized in that, The first image acquisition module, the third image acquisition module, and the fourth image acquisition module all use wide-angle high-definition cameras. The fourth image acquisition module (11) is equipped with an anti-obstruction detection module for identifying the insertion of foreign objects at the tail.

8. The four-camera stamp device for all-around video evidence collection according to claim 1, characterized in that, The main control module (6) is connected to an external remote seal event response logic module. When abnormal behavior is detected, it provides an alarm signal, including sound prompts, light flashing and data marking functions.

9. The four-camera stamp device for all-around video evidence collection according to claim 1, characterized in that, It also includes a communication module that supports 4G / 5G or Wi-Fi communication, used to upload encrypted stamp data packets to the cloud server in real time for verification and filing.

10. A four-camera stamp device for all-around video evidence collection according to claim 9, characterized in that, The communication module also supports near-field communication protocol or Bluetooth communication for identity handshake and temporary key exchange with authorized terminal devices.

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