A mobile phone camera device capable of automatically adjusting angle

Abstract

The utility model discloses a kind of mobile phone camera devices of automatic angle adjustment, including camera module, driving mechanism, control module and power module.The driving mechanism is driven camera module by miniature stepper motor and gear set or connecting rod structure, realize the angle adjustment of pitch or rotating direction;Control module includes micro control unit and angle sensor, angle sensor real-time acquisition camera module's angle information, micro control unit is based on feedback signal and carries out closed-loop control, so that camera angle adjustment accuracy is superior to 0.5 °, deviation is less than 0.1 ° when automatically stopping.Power module is powered to control module and driving mechanism by DC-DC conversion circuit, and in standby state, enter low-power mode, system power consumption is lower than 10 μA.The device compact structure, positioning accurate, low power consumption, can be dismantled and replaced maintenance, suitable for the intelligent mobile phone terminal with automatic shooting and multi-view shooting function.

Description

Technical Field

[0001] This utility model relates to the field of mobile phone camera technology, and in particular to a mobile phone camera device that can automatically adjust the angle. Background Technology

[0002] With the continuous upgrade of smartphone imaging systems, camera modules are evolving from fixed-angle structures to adjustable ones to meet the needs of various scenarios such as selfies, video calls, and panoramic shooting. In existing technologies, some phones use motors to drive the lens module to flip or raise / lower, thereby expanding the field of view. However, these mechanisms generally suffer from the following problems: First, the adjustment precision is insufficient. Most structures use open-loop control, relying solely on the number of motor steps to calculate the angle. This lack of angle feedback and correction mechanisms easily leads to accumulated errors, resulting in shooting angle deviations and an inability to guarantee the consistency of image composition.

[0003] Secondly, power consumption and stability are significant issues. The motors and control circuits of traditional camera adjustment mechanisms are constantly powered on, resulting in high standby power consumption. This is especially problematic in miniature devices, where it can easily lead to heat generation and power loss, hindering long-term stable operation.

[0004] Secondly, the integration of the structure is low, resulting in high maintenance costs. Existing adjustment devices mostly adopt a fixed connection between the motor and the camera module, lacking modular design. When replacing or maintaining components, the entire device needs to be disassembled and reassembled, which increases the complexity of maintenance and limits the compatibility of different camera models.

[0005] Furthermore, its shock resistance and control stability are insufficient. During use, mobile phones are frequently held, shaken, and subjected to external impacts. Ordinary gear transmission mechanisms are prone to vibration or backlash during start-up and shutdown, affecting the accuracy of camera angle positioning and shooting stability.

[0006] In summary, existing mobile phone camera angle adjustment technology still has significant shortcomings in terms of angle control accuracy, energy management, modular structural design, and mechanical stability. There is an urgent need for an automatic angle adjustment device that is compact, precise in adjustment, low in power consumption, and independently maintainable, in order to achieve high-precision controllable adjustment and low-energy operation of smartphone cameras.

[0007] Therefore, existing technologies still need to be improved. Utility Model Content

[0008] In view of the problems existing in the prior art, such as low angle control accuracy, high energy consumption, poor structural integration, and insufficient shock resistance, the purpose of this utility model is to provide a mobile phone camera device with automatic angle adjustment. This device achieves high-precision automatic adjustment and stable positioning of the camera angle by introducing a micro stepper motor and gear set or linkage structure in the camera module for coordinated drive, combined with a microcontroller unit (MCU) and an angle sensor to form a closed-loop control system. Simultaneously, through graded voltage management and low-power sleep control of the power module, standby power consumption is significantly reduced, and the modular and detachable structural design improves the system's maintainability and compatibility, thereby effectively overcoming the shortcomings of the prior art and improving the intelligence, precision, and reliability of the mobile phone camera.

[0009] The technical solution of this utility model is as follows: This utility model provides a mobile phone camera device with an automatically adjustable angle, the device comprising: a camera module, a drive mechanism, a control module and a power module; The drive mechanism is mechanically connected to the camera module and is used to drive the camera module to adjust the angle in the pitch or rotation direction. The control module includes a microcontroller unit and an angle sensor. The angle sensor is used to collect the angular position information of the camera module in real time. The microcontroller unit controls the drive mechanism based on the angular position information to achieve closed-loop angle adjustment. The power supply module includes a DC-DC conversion circuit to provide a stable operating voltage for the control module and the drive mechanism.

[0010] In one embodiment, the drive mechanism includes a micro stepper motor and a transmission assembly, wherein the transmission assembly is a gear set or a linkage structure, used to convert the rotational motion of the stepper motor into the angle adjustment motion of the camera module.

[0011] In one embodiment, the sampling frequency of the angle sensor is not less than 100Hz, the adjustment accuracy of the closed-loop angle adjustment is better than 0.5°, and when the deviation between the target angle and the actual angle is less than 0.1°, the microcontroller stops driving the drive mechanism.

[0012] In one embodiment, the camera module supports a maximum pitch angle adjustment range of ±45°.

[0013] In one embodiment, the control module is further configured with a user interface, which includes physical buttons or a wireless / wired interface for communicating with a mobile application, for receiving angle adjustment commands or preset adjustment modes from the user.

[0014] In one embodiment, the power module implements low-power management for the control module and the drive mechanism when inactive, so that the system standby power consumption does not exceed 10μA.

[0015] In one embodiment, a damping or buffer structure is provided at the connection between the drive mechanism and the camera module to reduce the impact on the camera module and suppress vibration when the motor starts or stops or when external forces are applied.

[0016] In one embodiment, the drive mechanism, control module, and angle sensor are modularly arranged, and the camera module and the drive mechanism are connected by a detachable structure to facilitate the replacement and maintenance of the camera module or the drive module.

[0017] In one embodiment, the drive mechanism, control module and power module are electrically connected by wires or flexible cables, and the device has a sealing or protective structure at the wire lead-out point to prevent dust and moisture.

[0018] In one embodiment, after receiving an angle adjustment command, the microcontroller calculates the number of motor steps corresponding to the target angle and sends a drive signal. During the adjustment process, the microcontroller cyclically samples the angular position information of the angle sensor to achieve closed-loop control until the position is confirmed.

[0019] In summary, this invention organically combines a micro stepper motor, gear set or linkage structure, microcontroller unit (MCU), and angle sensor to construct a compact, fast-responding, and precision-controllable automatic adjustment system for mobile phone cameras. The closed-loop control architecture effectively solves the problems of existing technologies where camera angle control relies on open-loop drive and suffers from large positioning errors. It achieves camera angle adjustment accuracy better than 0.5° and can automatically stop when the deviation is less than 0.1°, thus significantly improving angle positioning stability and shooting consistency. Through the hierarchical power supply and low-power management design of the power module, this invention consumes less than 10μA in standby mode, balancing performance and energy efficiency. Simultaneously, the modular structure allows for independent replacement and maintenance of each component, reducing assembly and repair costs and improving system scalability. This device not only achieves high precision and high stability in camera angle adjustment but also optimizes energy consumption and ensures structural reliability, possessing broad industrial application value.

[0020] Compared with existing unlocking methods such as patterns, passwords, fingerprints, and facial recognition, the mobile phone camera device with automatically adjustable angle proposed in this utility model has the following advantages: 1. Enhanced security through multi-dimensional verification: By drawing questions in combination with owner information questions, fun questions and brain teasers, and requiring at least one owner information question to unlock, attackers will find it difficult to pass the overall verification even if they know part of the answer, significantly raising the threshold for unauthorized unlocking.

[0021] 2. Introducing interactive fun: During the unlocking process, a humanoid robot announces questions and provides feedback on the answering progress via voice, breaking the monotony of traditional unlocking and making the unlocking process more fun and interactive, thus improving the user experience.

[0022] 3. Proactive anti-theft and tracking: When a user answers incorrectly three times in a row, the system automatically locates the user and sends the location information and alarm information to the preset contact person or security platform, realizing the transformation from "passive defense" to "proactive tracking", which greatly enhances security in the event of loss or theft.

[0023] 4. Fault tolerance and privacy protection coexist: By integrating local and cloud-based speech recognition strategies, offline availability is ensured while recognition accuracy is improved; answers are stored in encrypted or hashed form, and fuzzy matching and synonym tolerance are supported during verification, which not only ensures user privacy and security but also avoids unlocking failure due to minor slips of the tongue.

[0024] 5. Flexible usage modes: Supports emergency quick unlock mode, allowing users to unlock devices with only the owner's information in special circumstances; also provides optional security modules such as voiceprint liveness detection to further reduce the risk of recording playback attacks.

[0025] 6. Reliability of alarm transmission: Alarm information can be sent through multiple paths such as SMS, email, carrier interface or third-party security services, and is equipped with encryption and retry mechanisms to ensure that alarm information can be reliably delivered at critical moments. Attached Figure Description

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings: Figure 1 A structural block diagram of the mobile phone camera device with automatically adjustable angle provided by this utility model; Figure 2 A flowchart of the working device of the mobile phone camera device with automatic angle adjustment provided by this utility model. Detailed Implementation

[0027] To make the objectives, technical solutions, and effects of this utility model clearer and more explicit, the present utility model is further described in detail below. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model. The embodiments of the present utility model are described below in conjunction with the accompanying drawings.

[0028] This embodiment provides a mobile phone camera device with an automatically adjustable angle. Please refer to [link / reference]. Figure 1 , Figure 2 The device includes: a camera module 1, a drive mechanism 2, a control module 3, and a power module 4; The drive mechanism 2 is mechanically connected to the camera module 1 and is used to drive the camera module 1 to adjust the angle in the pitch or rotation direction. The control module 3 includes a microcontroller unit and an angle sensor. The angle sensor is used to collect the angular position information of the camera module in real time. The microcontroller unit 3 controls the drive mechanism 2 based on the angular position information to achieve closed-loop angle adjustment. The power supply module 4 includes a DC-DC conversion circuit to provide a stable operating voltage for the control module 3 and the drive mechanism 2.

[0029] Specifically, in a mobile phone camera device with automatically adjustable angle, the camera module 1, drive mechanism 2, control module 3, and power module 4 are arranged in a stacked manner inside the upper casing of the mobile phone. The camera module 1 is connected to the bracket via a pivot, and the bottom of the bracket is fixed to the output end of the drive mechanism 2, forming an integrated rotating unit. The drive mechanism 2 and the control module 3 are connected via a flexible ribbon cable. The control module 3 is embedded in the motherboard area, and its core is a microcontroller unit (MCU), which is used to interpret angle commands from applications or buttons and drive the motor to rotate. The power module 4 is independent of the motherboard power system, providing a 3.3V logic voltage to the MCU through a DC-DC voltage regulator circuit, and simultaneously providing a 5V drive voltage to the drive mechanism to ensure the stability and transient response performance of the angle adjustment action. This layout achieves physical isolation between signal control and power transmission, effectively reducing the impact of high-frequency interference on the camera imaging circuit, and ensuring the overall electromagnetic compatibility and operational reliability of the device.

[0030] In a further embodiment, the drive mechanism 2 includes a micro stepper motor and a transmission assembly, wherein the transmission assembly is a gear set or a linkage structure, used to convert the rotational motion of the stepper motor into the angle adjustment motion of the camera module 1.

[0031] Specifically, the drive mechanism 2 uses a micro stepper motor as its power source. The motor is fixed on the mounting bracket, and its output shaft is coaxially connected to the primary drive gear. The primary gear meshes with the secondary gear, and the secondary gear is linked to the camera support frame via a connecting shaft, thereby achieving angle adjustment. The gear set is made of high-strength, wear-resistant POM material and coated with a small amount of lubricating grease to reduce friction noise. To improve transmission accuracy, a precision positioning pin is installed between the motor output shaft and the gear set to ensure that the transmission gap does not exceed 0.05mm after multiple starts and stops. For lightweight models with limited structural space, a linkage structure can also be used, where the eccentric wheel at the motor output end drives the linkage mechanism to achieve the same angle adjustment effect. This structural solution is not only compact and easy to manufacture, but also allows for flexible changes in the transmission ratio by adjusting the gear module or the linkage arm length, adapting to the size requirements of different camera modules.

[0032] In a further embodiment, the sampling frequency of the angle sensor is not less than 100Hz, the adjustment accuracy of the closed-loop angle adjustment is better than 0.5°, and when the deviation between the target angle and the actual angle is less than 0.1°, the microcontroller stops driving the drive mechanism 2.

[0033] Specifically, to achieve precise angle control, an angle sensor is arranged between the drive mechanism 2 and the camera bracket. The sensor preferably uses a high-precision magnetic encoder or a MEMS angle detection chip. The angle sensor communicates with the MCU via I²C or SPI bus to transmit angle data in real time. The MCU has internal data filtering and angle deviation compensation algorithms to eliminate sensor noise and mechanical clearance errors. The sampling frequency is set to 100Hz to ensure real-time angle feedback. During adjustment, the MCU continuously compares the difference between the target angle and the current angle and adjusts the motor steps according to the deviation. When the detected deviation is less than 0.1°, the MCU sends a stop signal and cuts off the motor current output. In this way, the camera module can stably hover at any specified angle, and the accumulated angle error can still be kept within ±0.5° after long-term use, ensuring stable composition of the captured image.

[0034] In a further embodiment, the camera module 1 supports a maximum pitch angle adjustment range of ±45°.

[0035] Specifically, in this device, the mechanical structure of the camera module 1 is designed to allow the pitch angle to vary within a range of ±45°. An angle limiting structure is located on both sides of the support frame, consisting of limiting bosses and limiting grooves. When the camera module 1 rotates to its maximum pitch position, the limiting bosses contact the groove wall to form a mechanical stop, preventing over-rotation of the motor that could lead to gear disengagement or damage to the connecting rod. Simultaneously, upper and lower angle limit parameters are also set at the software level. When the angle sensor detects an over-limit signal, the MCU immediately stops the motor. Through these dual mechanical and electronic limiting measures, not only is structural safety improved, but malfunctions caused by external interference are also prevented, thereby enhancing the long-term reliability of the system.

[0036] In a further embodiment, the control module 3 is also configured with a user interface, which includes physical buttons or a wireless / wired interface for communicating with a mobile application, for receiving angle adjustment commands or preset adjustment modes from the user.

[0037] Specifically, the user interface of the control module 3 includes both hardware and software methods: the hardware interface is a button on the phone body or a physical dial for quickly triggering angle adjustment; the software interface is a smartphone application (APP) or system menu control item, which establishes a connection with the MCU through a wireless communication module (such as Bluetooth BLE or Wi-Fi module). Users can set the target angle or select preset shooting modes in the APP interface, such as "front-facing selfie," "desktop top view," and "horizontal view." After receiving the user's command, the control module 3 converts the angle parameters into digital signals and inputs them into the MCU. The MCU then drives the stepper motor to rotate precisely based on the feedback data. The system also supports an "automatic calibration mode," which determines the zero point of the angle through a single full scan, enabling rapid positioning during subsequent use. This solution not only makes camera angle adjustment highly automated but also ensures convenient user interaction and operational safety.

[0038] In a further embodiment, the power module 4 implements low-power management for the control module and the drive mechanism in an inactive state, so that the system standby power consumption does not exceed 10μA.

[0039] Specifically, power module 4 adopts a high-efficiency DC-DC conversion architecture, including a boost circuit, a buck circuit, and a power management circuit. The input voltage can be taken from the output of the phone's main battery. After being regulated by the power management chip, it outputs 3.3V and 5V DC voltages respectively. The 3.3V is used for the control module and angle sensor, and the 5V is used to drive the stepper motor. To prevent voltage fluctuations from interfering with the camera image signal, power module 4 sets up an LC filter network at the output to suppress high-frequency noise. When the system does not receive an adjustment command, the MCU shuts down the motor drive stage through internal low-power control logic, keeping only the angle detection and communication interface working, keeping standby power consumption below 10μA. When a user input or system wake-up signal is detected, the MCU reactivates the drive module and enters full-power operation. The entire switching process has a response time of less than 20ms, which can significantly reduce power consumption while ensuring real-time performance, making it suitable for terminal devices such as mobile phones with high battery life requirements.

[0040] In a further embodiment, a damping or buffer structure is provided at the connection between the drive mechanism 2 and the camera module 1 to reduce the impact on the camera module and suppress vibration when the motor starts or stops or when external forces are applied.

[0041] Specifically, to avoid vibration and mechanical shock during camera adjustment, a damping buffer assembly is added at the connection between the drive mechanism 2 and the camera module 1. The damping assembly consists of a high-resilience silicone gasket and a miniature spring support, installed between the camera bracket and the gear output end. When the motor starts and stops, the buffer structure absorbs instantaneous torque changes, preventing overshoot of the transmission components. Furthermore, a flexible rubber ring can be installed between the device housing and the support structure to further reduce the impact of external impacts on the angle adjustment accuracy. Prototype testing has verified that this damping structure can reduce angle jitter during motor start-up and stop by approximately 70%, significantly improving the camera's angle stability. This solution improves the system's mechanical reliability without increasing its size, providing effective support for the overall vibration-resistant design of the device.

[0042] In a further embodiment, the drive mechanism 2, control module 3, and angle sensor are modularly arranged, and the camera module 1 and the drive mechanism 2 are connected by a detachable structure to facilitate the replacement and maintenance of the camera module 1 or the drive module 2.

[0043] Specifically, to achieve high maintainability and component standardization, this utility model adopts a modular assembly structure. The drive mechanism 2, control module 3, and angle sensor module are each independently packaged and mounted on a unified mounting base. Each module is quickly connected via a standardized interface. The camera module 1 and drive mechanism 2 use a snap-lock structure or a micro-threaded connection structure, eliminating the need for welding during disassembly and allowing users or maintenance personnel to independently replace damaged parts. A foolproof positioning structure is provided at the module interface to ensure correct installation orientation and prevent mis-insertion. Through this modular design, each functional module can be independently tested during the production phase, reducing rework rates after assembly. In the after-sales phase, different specifications of camera modules or upgrades to drive modules can be quickly replaced according to usage requirements, significantly improving product scalability and maintenance efficiency.

[0044] In a further embodiment, the drive mechanism 2, the control module 3 and the power module 4 are electrically connected by wires or flexible cables, and the device is provided with a sealing or protective structure at the wire lead-out point to prevent dust and moisture.

[0045] Specifically, to ensure the long-term reliability of the entire machine under various environments, the drive mechanism 2, control module 3, and power module 4 are connected via flexible ribbon cables. The surface of the ribbon cables is covered with an insulating layer, and sealing gaskets are added at the ports. A double-layer silicone sealing ring structure is used at the connection between the ribbon cables and the housing to prevent dust and moisture from entering. The module interface uses gold-plated terminals, which are corrosion-resistant and suitable for humid or dusty environments. The housing is made of ABS engineering plastic or aluminum alloy and undergoes anodizing or spray-coating insulation treatment to enhance electromagnetic shielding. Through the above structural optimizations, the entire machine can operate stably within an ambient temperature range of −10°C to 50°C, exhibiting good anti-interference capabilities and environmental adaptability.

[0046] In a further embodiment, after receiving the angle adjustment command, the microcontroller calculates the number of motor steps corresponding to the target angle and sends a drive signal. During the adjustment process, the microcontroller cyclically samples the angular position information of the angle sensor to achieve closed-loop control until the position is confirmed.

[0047] Specifically, during system operation, the MCU first receives angle commands from the user interface or APP and converts these commands into target angle values. Then, based on the motor step angle and transmission ratio parameters stored in the system, the MCU calculates the required number of motor steps and generates pulse signals to drive the stepper motor to rotate. During adjustment, the angle sensor feeds back the current angle data to the MCU in real time. The MCU uses a proportional-integral control algorithm to dynamically correct angle deviations. When the deviation between the actual angle and the target angle is less than 0.1°, the MCU immediately issues a stop signal and cuts off the motor power supply. This entire process constitutes a closed-loop control system, achieving automatic adjustment and stable positioning. The system performs a zero-point calibration process after each power-on to ensure the consistency of the angle reference point. This closed-loop control strategy effectively improves the accuracy and response speed of camera adjustment, enabling the device to maintain highly consistent positioning performance even with frequent start-stop cycles.

[0048] In summary, the mobile phone camera device with automatic angle adjustment proposed in this utility model achieves angle driving of the camera module through mechanical transmission of a stepper motor and gear set or linkage structure; combined with the closed-loop control logic of angle sensor and microcontroller unit, it enables the camera to achieve high-precision and stable automatic adjustment in the pitch direction. The system maintains optimal energy efficiency in both operation and standby states through graded voltage conversion and low-power management of the power module. The device adopts a modular design, facilitating adaptation and subsequent maintenance of different camera module models. Damping buffer structures are incorporated at the connection points to improve shock resistance and service life. This solution, with precision control and low-power synergy as its core, balances structural compactness, response speed, and industrial feasibility, and can be widely applied in smartphone imaging systems such as multi-view shooting, video calls, and automatic tracking shooting, demonstrating high engineering practicality and promotion potential.

[0049] It should be understood that the application of this utility model is not limited to the examples above. Those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. An automatically angle-adjustable mobile phone camera device, characterized in that, The device includes: a camera module, a drive mechanism, a control module, and a power module; The drive mechanism is mechanically connected to the camera module and is used to drive the camera module to adjust the angle in the pitch or rotation direction. The control module includes a microcontroller unit and an angle sensor. The angle sensor is used to collect the angular position information of the camera module in real time. The microcontroller unit controls the drive mechanism based on the angular position information to achieve closed-loop angle adjustment. The power supply module includes a DC-DC conversion circuit to provide a stable operating voltage for the control module and the drive mechanism.

2. The automatically angle-adjustable phone camera device of claim 1, wherein, The drive mechanism includes a miniature stepper motor and a transmission assembly. The transmission assembly is a gear set or a linkage structure, used to convert the rotational motion of the stepper motor into the angle adjustment motion of the camera module.

3. The automatically angle-adjustable mobile phone camera device according to claim 1 or 2, characterized in that, The sampling frequency of the angle sensor is not less than 100Hz, the adjustment accuracy of the closed-loop angle adjustment is better than 0.5°, and when the deviation between the target angle and the actual angle is less than 0.1°, the microcontroller stops driving the drive mechanism.

4. The automatically angle-adjustable mobile phone camera device according to any one of claims 1-3, characterized in that, The camera module supports a maximum pitch angle adjustment range of ±45°.

5. The mobile phone camera device with automatically adjustable angle according to any one of claims 1-4, characterized in that, The control module is also configured with a user interface, which includes physical buttons or a wireless / wired interface for communicating with mobile applications, for receiving user angle adjustment commands or preset adjustment modes.

6. The automatically angle adjustable handset camera device according to any one of claims 1-5, wherein, When the power module is inactive, it implements low-power management for the control module and the drive mechanism, so that the system standby power consumption does not exceed 10μA.

7. The automatically angle adjustable handset camera device according to any one of claims 1-6, wherein, The connection between the drive mechanism and the camera module is provided with a damping or buffer structure to reduce the impact on the camera module and suppress vibration when the motor starts or stops or when external forces are applied.

8. The automatically angle adjustable handset camera device according to any one of claims 1-7, wherein, The drive mechanism, control module, and angle sensor are modularly arranged, and the camera module and the drive mechanism are connected by a detachable structure to facilitate the replacement and maintenance of the camera module or the drive module.

9. The automatically angle adjustable handset camera device of any one of claims 1-8, wherein, The drive mechanism, control module and power module are electrically connected by wires or flexible cables, and the device has a sealing or protective structure at the wire lead-out point to prevent dust and moisture.

10. The automatically angle adjustable handset camera device according to any one of claims 1-9, wherein, After receiving the angle adjustment command, the microcontroller calculates the number of motor steps corresponding to the target angle and sends a drive signal. During the adjustment process, the microcontroller cyclically samples the angular position information of the angle sensor to achieve closed-loop control until the position is confirmed.

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