A video acquisition device for linear acceleration measurement
Patent Information
- Application Number
- CN202522672258.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-17
- Publication Date
- 2026-10-16
- Estimated Expiration
- 2035-12-17
AI Technical Summary
[0002]近海潜航器发现水面与水下目标时，采用近距离磁场检测方式，磁场检测距离在3米之内，超过3米无法感知水面与水下目标磁场状态
[0016] The beneficial effects of this utility model are as follows: It provides a video acquisition device for linear acceleration measurement. It can still detect targets on the water surface or underwater at distances exceeding 3 meters and sense the target's motion state. It achieves real-time acquisition and filtering of linear acceleration, and stores the processed linear acceleration values. After the core control board acquires and processes the linear acceleration data, it compares it with a set threshold. When the acquired value exceeds the set threshold, the onboard control circuit activates power to the motion camera. After power is supplied, the motion camera automatically records video according to the set technical parameters. The linear acceleration detection range is 0–5g; the maximum impact resistance of linear acceleration is ±10g; the linear acceleration resolution is 0.01g; the effective linear acceleration value is 0.1g; the motion camera power-on/off time is less than 10ms; battery power lasts for at least 7 days in low-power mode; and the video recording time is greater than 2 hours.
Smart Images
Figure CN224861638U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a video acquisition device, specifically a video acquisition device for measuring linear acceleration. Background Technology
[0002] When near-shore submersibles detect surface and underwater targets, they employ a close-range magnetic field detection method. The detection distance is within 3 meters; beyond 3 meters, they cannot sense the magnetic field status of surface and underwater targets. Currently, near-shore submersibles cannot collect real-time linear acceleration values within 3 meters during movement, nor can they initiate video acquisition based on changes in linear acceleration to record the motion status of underwater and surface targets. Utility Model Content
[0003] To address the aforementioned technical problems, this invention provides a video acquisition device for measuring linear acceleration. It is designed for detecting and calculating the linear deceleration of near-shore submersibles during underwater movement, enabling video recording and capturing video of underwater and surface targets.
[0004] The technical solution adopted by this utility model is as follows: a video acquisition device for linear acceleration measurement, the video acquisition device includes a housing bracket, a battery pack, a core control board, a motion camera, a rear cover plate, a rear cover counterweight, an acceleration sensor, and a data logger; the core control board is installed in the housing bracket by bolts, the motion camera is fixed to the front end face of the core control board by bolts, the battery pack is set in the housing bracket, buffer rubber pads are pasted on both sides of the battery pack, the battery pack is pressed and fixed by the core control board and the rear cover plate, the rear cover plate is installed at the rear end of the housing bracket by bolts, the rear cover counterweight is installed on the rear cover plate by bolts, the acceleration sensor is welded to the front end face of the core control board, and the data logger is welded to the core control board.
[0005] Furthermore, the core control board is concentrically mounted inside the housing bracket by three circumferentially distributed bolts.
[0006] Furthermore, the action camera is provided with threaded holes, and the front end of the core control board has threaded holes reserved for connection with the action camera.
[0007] Furthermore, the battery pack power leads are connected to the sockets on the core control board to supply power to the equipment.
[0008] Furthermore, the housing support is made of ABS material.
[0009] Furthermore, the inner cavity of the housing support is provided with a boss for mounting the core control board.
[0010] Furthermore, the mounting nuts for the equipment are hot-riveted nuts, consisting of 6 M3 nuts and 9 M2 nuts.
[0011] Furthermore, the housing support is made of ABS material and manufactured through 3D printing.
[0012] Furthermore, the action camera captures images of moving or stationary targets underwater or on the water surface, and enables playback of the captured video and linear acceleration values. It also analyzes the operational status and orientation of the moving or stationary targets underwater or on the water surface.
[0013] Furthermore, based on the real-time acquisition and filtering of linear acceleration data, the power supply operation for the action camera is realized by comparing it with the set threshold data.
[0014] Furthermore, the linear acceleration values are obtained using a dedicated acceleration acquisition sensor, with the direction of the linear acceleration aligned with the direction of the submersible.
[0015] Furthermore, both video data and acceleration values can be played back, with video data exported using an SD card; the accelerometer is powered separately and reads data via a USB flash drive.
[0016] The beneficial effects of this utility model are as follows: It provides a video acquisition device for linear acceleration measurement. It can still detect targets on the water surface or underwater at distances exceeding 3 meters and sense the target's motion state. It achieves real-time acquisition and filtering of linear acceleration, and stores the processed linear acceleration values. After the core control board acquires and processes the linear acceleration data, it compares it with a set threshold. When the acquired value exceeds the set threshold, the onboard control circuit activates power to the motion camera. After power is supplied, the motion camera automatically records video according to the set technical parameters. The linear acceleration detection range is 0–5g; the maximum impact resistance of linear acceleration is ±10g; the linear acceleration resolution is 0.01g; the effective linear acceleration value is 0.1g; the motion camera power-on / off time is less than 10ms; battery power lasts for at least 7 days in low-power mode; and the video recording time is greater than 2 hours. Attached Figure Description
[0017] Figure 1 This is a top-down view of the video capture equipment. Figure 2 yes Figure 1 Cross-sectional view of AA in the middle; Figure 3 This is a 3D structural diagram of the video capture equipment; Figure 4 This is a circuit diagram of an accelerometer; Figure 5 It is a power supply circuit diagram; Figure 6 This is a power supply circuit diagram for an action camera; Figure 7This is the circuit diagram of the core control board and data logger; Figure 8 This is a component layout diagram of the core control board; Figure 9 A schematic diagram of the welding and packaging of the core control board. Detailed Implementation
[0018] like Figures 1-3 As shown, a video acquisition device for linear acceleration measurement includes a housing bracket 100, a battery pack 200, a core control board 300, a motion camera 400, a rear cover plate 500, a rear cover counterweight 600, an accelerometer 700, and a data logger 800. The core control board is bolted into the housing bracket. The motion camera is bolted to the front end of the core control board. The battery pack is housed within the housing bracket, with cushioning rubber pads adhered to both sides. The battery pack is press-fitted to the core control board and the rear cover plate, which is bolted to the rear end of the housing bracket. The rear cover counterweight is bolted to the rear cover plate. The accelerometer is welded to the front end of the core control board, and the data logger is welded to the core control board. The core control board is concentrically mounted within the housing bracket using three evenly distributed circumferential bolts. The battery pack power leads are connected to a socket on the core control board to supply power to the device. The housing bracket is made of ABS material, and its inner cavity has a boss for mounting the core control board.
[0019] Figure 4 This is a circuit diagram for an acceleration measurement sensor. The accelerometer has a measurement range of ±5g, a resolution of not less than 0.1g, and is powered by a +3V regulated power supply with a power supply accuracy of 0.1%.
[0020] Figure 5 This is the power supply circuit diagram. The power supply circuit is a three-way DC-DC converter. The first channel supplies +8.4V to the battery pack. After passing through the reverse protection circuit, the self-resetting fuse, and the TVS protection circuit, the +8.4V is converted to +5V, labeled VCC. The second channel converts +5V (VCC) to +3.3V to power the controller. The third channel converts +5V (VCC) to +3V to power the accelerometer.
[0021] Figure 6 This is a circuit diagram for powering an action camera. The battery pack supplies +8.4V. After passing through a reverse protection circuit, a self-resetting fuse, and a TVS protection circuit, the +8.4V is converted to +5V, labeled VCC_C. The output of this power supply is controlled by the high / low level of the control pin "ENVCC_C". A low level is active, and a high level disables the output.
[0022] Figure 7 This is the circuit diagram of the core control board and data logger. Figure 8This is a component layout diagram of the core control board. Figure 9 This is a schematic diagram of the soldering and sealing of the core control board. Table 1 is a list of component packages for the core control board.
[0023] Table 1
[0024] Video acquisition equipment is used to detect the linear acceleration values of underwater vehicles in real time during linear movement, and to record video based on the acceleration values to analyze the state of underwater or surface moving or stationary targets. This equipment can acquire linear acceleration data, then filter the data, and store the processed linear acceleration values using a data logger. The data logger can also read, write, and play back data via USB flash drive.
[0025] The processed linear acceleration data is compared with the actual operating condition threshold. When the linear acceleration value exceeds the threshold, the power supply circuit of the action camera is turned on. After the action camera is powered on, it records video according to the preset technical parameters (such as resolution, frame rate, etc.). The recorded video is continuous, and the video file is stored in the action camera's internal SD card. The device operates for 7 days in standby mode, during which it continuously detects acceleration values and stores them in real time to the data logger. The video recording time is no less than 2 hours.
Claims
1. A video acquisition device for linear acceleration measurement, characterized in that: The video acquisition device includes a housing support, a battery pack, a core control board, a motion camera, a rear cover, a rear cover counterweight, an accelerometer, and a data logger. The core control board is bolted to the housing support, the motion camera is bolted to the front end of the core control board, the battery pack is housed within the housing support, and cushioning rubber pads are attached to both sides of the battery pack. The battery pack is pressed and fixed to the core control board and the rear cover, which is bolted to the rear end of the housing support. The rear cover counterweight is bolted to the rear cover, the accelerometer is welded to the front end of the core control board, and the data logger is welded to the core control board.
2. The video acquisition device for linear acceleration measurement according to claim 1, characterized in that: The core control board is concentrically mounted inside the housing bracket by three evenly distributed bolts around its circumference.
3. The video acquisition device for linear acceleration measurement according to claim 1, characterized in that: The battery pack power leads are connected to the socket on the core control board to supply power to the device.
4. The video acquisition device for linear acceleration measurement according to claim 1, characterized in that: The housing support is made of ABS material.
5. The video acquisition device for linear acceleration measurement according to claim 4, characterized in that: The inner cavity of the housing support is provided with a boss for mounting the core control board.