Exterior mirror anti-dazzle control system

Abstract

The utility model relates to the technical field of automobile accessories, and provides an outer mirror anti-dazzle control system which comprises a photosensitive sensor, a power module, an outer rearview mirror module and a control module. The photosensitive sensor is connected to the control module, the power supply module is electrically connected to the control module, the outside rear-view mirror module comprises a lens and an outside rear-view mirror MCU, the control module is in communication connection with the outside rear-view mirror MCU, and the control module is used for receiving a signal of the photosensitive sensor and outputting a control signal. The control module receives a value output by the photosensitive sensor to judge ambient light or glare and outputs an anti-dazzle grade, and the outside rear-view mirror MCU receives a signal output by the control module to control the anti-dazzle function of the lens. On the basis, the outer mirror can actively prevent dazzle, and the driving safety is improved.

Description

Technical Field

[0001] This invention relates to the field of automotive parts technology, specifically to an exterior mirror anti-glare control system. Background Technology

[0002] Currently, vehicle exterior rearview mirrors have significant shortcomings in terms of anti-glare functionality. Most traditional vehicle exterior rearview mirrors lack active anti-glare control capabilities; their anti-glare effect primarily relies on the vehicle's main unit system and the linkage control between the interior rearview mirror and the vehicle's head unit. However, due to the lack of an independent active anti-glare mechanism, this design suffers from low real-time anti-glare response, making it difficult to quickly adapt to complex and changing driving environments. For example, when driving at night, the glare from vehicles behind may cause glare to the driver, and the exterior rearview mirror may not be able to adjust its anti-glare status in time, posing a significant threat to driving safety.

[0003] Therefore, this application studies an external mirror anti-glare control system that enables the external mirror to actively prevent glare and improve driving safety. Utility Model Content

[0004] In order to enable active anti-glare control of exterior mirrors and improve driving safety, this application provides an anti-glare control system for exterior mirrors.

[0005] This application provides an external mirror anti-glare control system, which adopts the following technical solution:

[0006] An exterior mirror anti-glare control system includes a photosensitive sensor, a power supply module, an exterior rearview mirror module, and a control module. The photosensitive sensor is used to collect ambient light and glare. The photosensitive sensor is connected to the control module, and the power supply module is electrically connected to the control module. The exterior rearview mirror module includes a lens and an exterior rearview mirror MCU. The control module is communicatively connected to the exterior rearview mirror MCU. The control module receives signals from the photosensitive sensor and outputs control signals. The control module receives the output value of the photosensitive sensor to determine ambient light or glare and outputs the anti-glare level. The exterior rearview mirror MCU receives the signals output by the control module to control the lens anti-glare function.

[0007] By adopting the above technical solution, the exterior rearview mirror is controlled independently by a photosensitive sensor. The photosensitive sensor continuously collects the average value as the ambient light sensitivity value. When the value changes abruptly and persists for a period of time, it will be judged as glare. The control module then receives and transmits the signal to the exterior rearview mirror MCU to activate the lens anti-glare function. This allows for more timely acquisition of glare information and autonomous anti-glare, reducing the impact of strong light from vehicles behind on the driver's vision during nighttime driving and improving driving safety.

[0008] Optionally, the power module includes a power supply and at least one LDO power supply, the power supply and the LDO power supply being electrically connected in sequence, and the LDO power supply being electrically connected to the control module.

[0009] By adopting the above technical solution, the LDO power supply can convert an unstable or high-voltage input power supply into a stable low-voltage output, providing a stable operating voltage for the control module and adapting to different input voltages.

[0010] Optionally, the multiple LDO power supplies have different voltages, and the output voltage of the LDO power supplies between the power supplies and the control module decreases sequentially.

[0011] By adopting the above technical solution and through multi-stage voltage reduction, the temperature of the switching transistor can be reduced, making the system more stable.

[0012] Optionally, the LDO power supply is provided with two units, with output voltages of 8V and 5V respectively.

[0013] Optionally, a power protection module may also be included, which is used to protect the power module.

[0014] By adopting the above technical solution, it is possible to adapt to various voltage fluctuations on the vehicle.

[0015] Optionally, the control module includes a main control MCU and a motherboard. The main control MCU receives the value of the photosensitive sensor, processes and judges it, and outputs the anti-glare level. The motherboard is used to output the corresponding voltage according to the signal output by the main control MCU to control the lens to achieve the anti-glare function.

[0016] Optionally, an EMC protection module is also included to protect the internal circuitry from external electromagnetic influences.

[0017] In summary, this application includes the following beneficial technical effects:

[0018] 1. The exterior rearview mirror is controlled independently by a photosensitive sensor. The photosensitive sensor continuously collects the average value as the ambient light sensitivity value. When the value changes abruptly and persists for a period of time, it will be judged as glare. The control module will then receive and transmit the signal to the exterior rearview mirror MCU to activate the lens anti-glare function. This allows for more timely acquisition of glare information and autonomous anti-glare, reducing the impact of strong light from vehicles behind on the driver's vision during nighttime driving and improving driving safety.

[0019] 2. An LDO power supply can convert an unstable or high-voltage input to a stable low-voltage output, providing a stable operating voltage for the control module and adapting to different input voltages;

[0020] 3. By using multi-stage voltage reduction, the temperature of the switching transistor can be reduced, making the system more stable. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other embodiments can be obtained based on these drawings without creative effort.

[0022] In the diagram:

[0023] Figure 1 This is a system diagram of the external mirror anti-glare control system according to an embodiment of this application. Detailed Implementation

[0024] The following is in conjunction with the appendix Figure 1 This application will be described in further detail.

[0025] This application discloses an anti-glare control system for external lenses. (Refer to...) Figure 1 The exterior mirror anti-glare control system includes a photosensitive sensor, a power module, an exterior rearview mirror module, and a control module. The photosensitive sensor collects ambient light and glare data, eliminating the need for two separate sensors. This saves costs and avoids the problem of the entire anti-glare system malfunctioning if one of the two sensors fails. The photosensitive sensor is connected to the control module, which is a PCBA board with an electronic controller. The power module is electrically connected to the control module. The exterior rearview mirror module includes a lens and an exterior rearview mirror MCU. The lens is treated with special mirror surface treatment or electronic anti-glare technology. When the exterior rearview mirror MCU receives a glare signal, the lens can activate the anti-glare function, reducing the impact of strong glare from rear vehicles on the driver's vision during nighttime driving and improving driving safety.

[0026] The control module communicates with the MCU of the exterior rearview mirror. The control module receives signals from the photosensitive sensor and outputs control signals. The control module receives the output value of the photosensitive sensor to determine whether it is ambient light or glare. The photosensitive sensor continuously collects the average value as the ambient light sensitivity value. When the value changes abruptly and persists for a period of time, it will be judged as glare, and the anti-glare level will be output. The MCU of the exterior rearview mirror receives the signal output by the control module to control the anti-glare function of the lens. Therefore, the exterior rearview mirror can obtain glare information in time, thereby realizing the autonomous anti-glare function of the exterior rearview mirror and improving driving safety.

[0027] In some embodiments, the control module includes a main control MCU and a motherboard. The main control MCU receives the value of the photosensitive sensor, processes and judges it, and outputs the anti-glare level. The motherboard is used to output the corresponding voltage according to the signal output by the main control MCU to control the lens to achieve the anti-glare function.

[0028] In some embodiments, the power module includes a power supply and at least one LDO power supply, which are electrically connected in sequence. The LDO power supply is electrically connected to the control module. The LDO power supply can convert an unstable or high-voltage input power supply into a stable low-voltage output, providing a stable operating voltage for the control module and adapting to different input voltages.

[0029] In some embodiments, multiple LDO power supplies have different voltages, with the voltage of the LDO power supplies between the power supply and the control module decreasing sequentially. This allows for voltage degradation, resulting in better heat dissipation and ensuring system stability.

[0030] In some embodiments, two LDO power supplies are provided, with output voltages of 8V and 5V respectively. In this embodiment, the 12V power supply is connected to the 8V LDO power supply, and the 5V LDO power supply is connected between the 8V LDO power supply and the control module. This allows for two-stage voltage reduction of the power supply, reducing the temperature of the switching transistor and better ensuring the stability of the system.

[0031] In some embodiments, the external mirror anti-glare control system further includes a power protection module for protecting the power supply module. Specifically, the power protection module can be an overcurrent protection device; when the current exceeds a set safety threshold, the fuse automatically disconnects the circuit to prevent damage caused by overload. It can also be an overvoltage / undervoltage protection device, with the circuit design including a Zener diode / TVS diode. Alternatively, it can be a short-circuit protection device, with the circuit design including a resettable fuse. This ensures the safe use of the power supply module and circuitry, improving system reliability.

[0032] In some embodiments, an EMC protection module is also included to protect the internal circuitry from external electromagnetic influences. Specifically, a π-type filter consisting of a common-mode choke and an X-capacitor is used on the power line to significantly reduce high-frequency noise entering the system, thereby protecting the circuitry from external electromagnetic influences.

[0033] The implementation principle of the exterior mirror anti-glare control system in this application embodiment is as follows: the exterior rearview mirror is controlled independently by a photosensitive sensor. The photosensitive sensor continuously collects the average value as the ambient light sensitivity value. When the value changes abruptly and persists for a period of time, it will be judged as glare. The control module receives and transmits the signal to the exterior rearview mirror MCU to activate the lens anti-glare function, so that glare information can be obtained more promptly and anti-glare can be performed autonomously, reducing the impact of strong light from vehicles behind on the driver's vision when driving at night and improving driving safety.

[0034] The above are exemplary embodiments disclosed in this invention. However, it should be noted that various changes and modifications can be made without departing from the scope of the embodiments of this invention as defined by the claims. The functions, steps, and / or actions of the methods according to the disclosed embodiments described herein do not need to be performed in any particular order. Furthermore, although the elements disclosed in the embodiments of this invention may be described or claimed individually, they may be understood as multiple unless explicitly limited to a singular number.

[0035] It should be understood that, as used herein, the singular form "a" is intended to include the plural form as well, unless the context clearly supports an exception. It should also be understood that, as used herein, "and / or" refers to any and all possible combinations of one or more of the associatedly listed items. The embodiment numbers disclosed above are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0036] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the invention (including the claims) is limited to these examples. Within the framework of the invention, technical features of the above embodiments or different embodiments can be combined, and many other variations of different aspects of the invention exist, which are not provided in the details for the sake of brevity. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the invention should be included within the protection scope of the invention.

Claims

1. An external mirror anti-dazzle control system characterised in that: The application relates to an anti-dazzling rearview mirror module, which comprises a photosensitive sensor, a power module, a rearview mirror module and a control module, wherein the photosensitive sensor is used for collecting ambient light and glare; the photosensitive sensor is connected to the control module; the power module is electrically connected to the control module; the rearview mirror module comprises a lens and a rearview mirror MCU; the control module is in communication connection with the rearview mirror MCU; the control module is used for receiving signals of the photosensitive sensor and outputting control signals; the control module receives values output by the photosensitive sensor to judge ambient light or glare and outputs an anti-dazzling level; the rearview mirror MCU receives signals output by the control module to control the anti-dazzling function of the lens.

2. The outside mirror anti-dazzle control system according to claim 1, characterized in that The power module comprises a power supply and at least one LDO power supply; the power supply and the LDO power supply are sequentially electrically connected; and the LDO power supply is electrically connected to the control module.

3. The outside mirror anti-dazzle control system of claim 2, characterized in that: The multiple LDO power supplies have different voltages; and the output voltages of the LDO power supplies between the power supply and the control module sequentially decrease.

4. The outside mirror anti-dazzle control system of claim 3, wherein: The LDO power supplies are arranged in two, and the output voltages are 8V and 5V respectively.

5. The outside mirror anti-dazzle control system according to claim 1, characterized in that: The application further comprises a power protection module which is used for protecting the power module.

6. The outside mirror anti-dazzle control system according to claim 1, characterized in that: The control module comprises a master control MCU and a mainboard; the master control MCU receives values of the photosensitive sensor and processes and judges the values to output an anti-dazzling level; and the mainboard is used for outputting corresponding voltage control signals of the lens to realize the anti-dazzling function according to signals output by the master control MCU.

7. The outside mirror anti-dazzle control system according to claim 1, characterized in that: The application further comprises an EMC protection module which is used for protecting internal circuits from external electromagnetic environment.

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