An automatic anti-glare streaming media rearview mirror

Abstract

This invention relates to an automatic anti-glare streaming media rearview mirror, the key technical points of which are: it includes: a digital-to-analog converter module, a microcontroller for controlling the output voltage of the digital-to-analog converter module according to the brightness, an operational amplifier module for increasing the output voltage, and a control circuit for driving the rearview mirror according to the output voltage; the microcontroller is connected to the control circuit in sequence through the digital-to-analog converter module and the operational amplifier module; this application has the advantage of being able to adjust the anti-glare effect of the mirror according to the light intensity of the vehicle approaching from behind.

Description

Technical Field

[0001] This invention relates to the field of automotive rearview mirror technology, and more specifically, to an automatic anti-glare streaming media rearview mirror. Background Technology

[0002] Currently, cars have become the most frequently used means of transportation for people's daily travel. The rearview mirror of a car is the main component for drivers to observe the situation behind the car, and the structure and function of the interior rearview mirror installed on different brands and models of cars are also different.

[0003] Traditional streaming rearview mirrors cause strong glare at night when headlights from vehicles approaching from behind, affecting driving. Current streaming rearview mirrors, such as the invention patent with patent application number CN202010836656.2, achieve an anti-glare effect by adjusting the color of the EC mirror based on detected light signals. However, because they cannot adjust brightness according to the different intensities of light from vehicles approaching from behind, there is still room for improvement. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the purpose of this invention is to provide an automatic anti-glare streaming media rearview mirror, which has the advantage of being able to adjust the anti-glare effect of the mirror according to the light intensity of the vehicle behind.

[0005] The above-mentioned technical objective of the present invention is achieved through the following technical solution: a brightness adjustment module for an automatic anti-glare streaming media rearview mirror, comprising: a digital-to-analog converter module, a microcontroller for controlling the output voltage of the digital-to-analog converter module according to the brightness, an operational amplifier module for increasing the output voltage, and a control circuit for driving the rearview mirror according to the output voltage; the microcontroller is connected to the control circuit in sequence through the digital-to-analog converter module and the operational amplifier module.

[0006] Optionally, the digital-to-analog conversion module includes: a first chip, a first capacitor, and a first ferrite bead; a first terminal of the first chip is connected to a sixth terminal of the first chip; a first terminal of the first chip is connected to a DAC_5V port; a first terminal of the first chip is connected to an LCD_5V port via the first ferrite bead; a first terminal of the first chip is grounded via the first capacitor; a second terminal of the first chip is grounded; a third terminal of the first chip is connected to the SCL_DAC port of the controller; a fourth terminal of the first chip is connected to the SDA_DAC port of the controller; a fifth terminal of the first chip is connected to a transport amplifier module; and a sixth terminal of the first chip is connected to the DAC_5V port.

[0007] Optionally, the operational amplifier module includes: a second chip, a first resistor, a second resistor, a third resistor, a fourth resistor, and a second capacitor; the first terminal of the second chip is connected to the LC_PWR port through the first resistor; the second terminal of the second chip is grounded; the third terminal of the second chip is connected to the digital-to-analog converter module through the second resistor; the third terminal of the second chip is grounded through the second capacitor; the third terminal of the second chip is grounded sequentially through the second resistor and the third resistor; the fourth terminal of the second chip is connected to the LC_PWR port sequentially through the fourth resistor and the first resistor; and the fifth terminal of the second chip is connected to the DAC_5V port.

[0008] Optionally, the control circuit includes: a first NMOS transistor, a second NMOS transistor, a third NMOS transistor, a fourth NMOS transistor, a first transistor, a second transistor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a ninth resistor, and a tenth resistor; the source of the first NMOS transistor is grounded; the source of the first NMOS transistor is connected to the emitter of the first transistor; the source of the first NMOS transistor is connected to the base of the first transistor through the fifth resistor; the source of the first NMOS transistor is connected to the LC_SEC port sequentially through the fifth resistor and the sixth resistor; the drain of the first NMOS transistor is connected to the source of the second NMOS transistor; the drain of the first NMOS transistor is connected to the SEC port; the gate of the first NMOS transistor is connected to the collector of the first transistor; the gate of the first NMOS transistor is connected to the gate of the second NMOS transistor; the first NMOS... The gate of the first NMOS transistor is connected to the LC_PWR port via a seventh resistor; the drain of the second NMOS transistor is connected to the LC_PWR port; the source of the third NMOS transistor is grounded; the source of the third NMOS transistor is connected to the emitter of the second transistor; the source of the third NMOS transistor is connected to the base of the second transistor via an eighth resistor; the source of the third NMOS transistor is connected to the LC_COM port via an eighth resistor and a ninth resistor in sequence; the drain of the third NMOS transistor is connected to the source of the fourth NMOS transistor; the drain of the third NMOS transistor is connected to the COM port; the gate of the third NMOS transistor is connected to the collector of the second transistor; the gate of the third NMOS transistor is connected to the gate of the fourth NMOS transistor; the gate of the third NMOS transistor is connected to the LC_PWR port via a tenth resistor; the drain of the fourth NMOS transistor is connected to the LC_PWR port.

[0009] An automatic anti-glare streaming media rearview mirror includes: a housing, an electrically controlled dimming glass lens, a front ambient light sensor, a rear ambient light sensor, and a brightness adjustment module as described above; the brightness adjustment module is disposed within the housing; the electrically controlled dimming glass lens is disposed on one side of the housing; the front ambient light sensor is disposed on the other side of the housing; the rear ambient light sensor is disposed on one side of the housing; the front ambient light sensor, the rear ambient light sensor, and the electrically controlled dimming glass lens are all electrically connected to the brightness adjustment module.

[0010] An automatic anti-glare method for an automatic anti-glare streaming media rearview mirror includes:

[0011] The front and rear ambient light intensity information received by the front and rear ambient light sensors are acquired respectively.

[0012] Calculate the change in light intensity behind the camera based on the front and rear light intensity information;

[0013] The reflectivity of the electronically controlled dimming glass lens is calculated based on the change in the rear light intensity.

[0014] The digital-to-analog converter module adjusts the output voltage value based on the reflectivity.

[0015] The reflectivity of the electronically controlled dimming glass lens is adjusted according to the voltage value.

[0016] Optionally, controlling the reflectivity of the electrically controlled dimming glass lens according to the voltage value includes:

[0017] The digital-to-analog converter module is controlled to output the corresponding voltage V0 based on the voltage value;

[0018] The operational amplifier module receives the voltage V0 and amplifies it to output voltage V1.

[0019] The control circuit generates a first square wave and a second square wave with the same amplitude but opposite phase according to the voltage V1.

[0020] The reflectivity of the electronically controlled dimming glass lens is adjusted according to the first square wave and the second square wave.

[0021] In summary, the present invention has the following beneficial effects: The microcontroller reads the front and rear light intensity information via I2C, calculates the change in rear light intensity, and then calculates the required voltage value based on the pre-established functional relationship between voltage and reflectivity and the functional relationship between light intensity and reflectivity. It then controls the MCP47A1 chip to output the corresponding voltage V0. Voltage V0 passes through a voltage follower MCP6006 composed of operational amplifier ICs to reduce output impedance and improve load-carrying capacity. Voltage V1 is output to the control circuit through the LC_PWR port. The control circuit receives voltage V1 and generates two 64Hz square waves with the same amplitude but opposite phase based on the electrical signals received from the SEC and COM ports. These square waves are then output from the LC_SEC and LC_COM ports to the back electrode and segment electrode of the electrically controlled dimming glass lens, respectively, thereby driving the electrically controlled dimming glass lens and controlling its reflectivity and transmittance. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a structural schematic diagram of the present invention from another angle;

[0024] Figure 3 This is a circuit module diagram of the present invention;

[0025] Figure 4 This is a circuit diagram of the digital-to-analog conversion module and the operational amplifier module in the brightness adjustment module of the present invention;

[0026] Figure 5 This is a circuit diagram of the control circuit in the brightness adjustment module of the present invention;

[0027] Figure 6 This is a flowchart illustrating the automatic anti-glare method of the present invention.

[0028] In the diagram: 1. Housing; 2. Electronically controlled dimming glass lens; 3. Front ambient light sensor; 4. Rear ambient light sensor; 5. Brightness adjustment module; 51. Digital-to-analog converter module; 52. Microcontroller; 53. Operational amplifier module; 54. Control circuit; U1. First chip; U2. Second chip; R1. First resistor;

[0029] R2, second resistor; R3, third resistor; R4, fourth resistor; R5, fifth resistor; R6, sixth resistor; R7, seventh resistor; R8, eighth resistor; R9, ninth resistor; R10, tenth resistor; C1, first capacitor; C2, second capacitor; FB1, first ferrite bead; NMOS1, first NMOS transistor; NMOS2, second NMOS transistor; NMOS3, third NMOS transistor; NMOS4, fourth NMOS transistor; Q1, first transistor; Q2, second transistor. Detailed Implementation

[0030] To make the objectives, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Several embodiments of the present invention are shown in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein.

[0031] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature.

[0032] In this invention, unless otherwise expressly specified and limited, "above" or "below" a second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of a second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" of a second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature. The terms "vertical," "horizontal," "left," "right," "above," "below," and similar expressions are for illustrative purposes only and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed or operated in a specific orientation, and therefore should not be construed as limiting the invention.

[0033] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0034] This invention provides a brightness adjustment module 5 for an automatic anti-glare streaming media rearview mirror, such as... Figure 3-5 As shown, it includes: a digital-to-analog converter module 51, a microcontroller 52 for controlling the output voltage of the digital-to-analog converter module 51 according to the brightness, an operational amplifier module 53 for increasing the output voltage, and a control circuit 54 for driving the rearview mirror according to the output voltage; the microcontroller 52 is connected to the control circuit 54 in sequence through the digital-to-analog converter module 51 and the operational amplifier module 53.

[0035] In practical applications, the microcontroller 52 receives the light intensity from an oncoming vehicle and controls the digital-to-analog converter 51 to output a corresponding voltage based on the light intensity. The output voltage is amplified by the operational amplifier module 53, which reduces the output impedance to improve load-carrying capacity. The amplified voltage is then converted into a square wave with the same amplitude but opposite phase by the control circuit 54 and applied to the back electrode and segment electrode of the electrically controlled dimming glass lens 2 to control its reflectivity and transmittance. The electrically controlled dimming glass lens 2 is an LC mirror, and its refractive index is related to the voltage on its back electrode and segment electrode.

[0036] Further, the digital-to-analog conversion module 51 includes: a first chip U1, a first capacitor, and a first ferrite bead; the first terminal of the first chip U1 is connected to the sixth terminal of the first chip U1; the first terminal of the first chip U1 is connected to the DAC_5V port; the first terminal of the first chip U1 is connected to the LCD_5V port through the first ferrite bead; the first terminal of the first chip U1 is grounded through the first capacitor; the second terminal of the first chip U1 is grounded; the third terminal of the first chip U1 is connected to the SCL_DAC port of the controller; the fourth terminal of the first chip U1 is connected to the SDA_DAC port of the controller; the fifth terminal of the first chip U1 is connected to the transport amplifier module; and the sixth terminal of the first chip U1 is connected to the DAC_5V port.

[0037] In practical applications, the first chip U1 is a DAC chip of model MCP47A1. The microcontroller 52 reads the light intensity of the vehicles behind via I2C to calculate the required voltage value, and then controls the DAC chip of model MCP47A1 to output the corresponding voltage through the SCL_DAC port and SDA_DAC port.

[0038] Optionally, the operational amplifier module 53 includes: a second chip, a first resistor, a second resistor, a third resistor, a fourth resistor, and a second capacitor; the first terminal of the second chip is connected to the LC_PWR port through the first resistor; the second terminal of the second chip is grounded; the third terminal of the second chip is connected to the digital-to-analog converter module 51 through the second resistor; the third terminal of the second chip is grounded through the second capacitor; the third terminal of the second chip is grounded sequentially through the second resistor and the third resistor; the fourth terminal of the second chip is connected to the LC_PWR port sequentially through the fourth resistor and the first resistor; and the fifth terminal of the second chip is connected to the DAC_5V port.

[0039] In practical applications, the second chip is a voltage follower of model MCP6006. After receiving the voltage output from the DAC chip, the voltage follower composed of operational amplifier IC can reduce the output impedance, improve the load-driving capability, and output to the control circuit 54 through the LC_PWR port.

[0040] Optionally, the control circuit 54 includes: a first NMOS transistor, a second NMOS transistor, a third NMOS transistor, a fourth NMOS transistor, a first transistor, a second transistor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a ninth resistor, and a tenth resistor; the source of the first NMOS transistor is grounded; the source of the first NMOS transistor is connected to the emitter of the first transistor; the source of the first NMOS transistor is connected to the base of the first transistor through the fifth resistor; the source of the first NMOS transistor is connected to the LC_SEC port sequentially through the fifth resistor and the sixth resistor; the drain of the first NMOS transistor is connected to the source of the second NMOS transistor; the drain of the first NMOS transistor is connected to the SEC port; the gate of the first NMOS transistor is connected to the collector of the first transistor; the gate of the first NMOS transistor is connected to the gate of the second NMOS transistor; the first NMOS transistor... The gate of the S-MOSFET is connected to the LC_PWR port via the seventh resistor; the drain of the second NMOS transistor is connected to the LC_PWR port; the source of the third NMOS transistor is grounded; the source of the third NMOS transistor is connected to the emitter of the second transistor; the source of the third NMOS transistor is connected to the base of the second transistor via the eighth resistor; the source of the third NMOS transistor is connected to the LC_COM port via the eighth and ninth resistors in sequence; the drain of the third NMOS transistor is connected to the source of the fourth NMOS transistor; the drain of the third NMOS transistor is connected to the COM port; the gate of the third NMOS transistor is connected to the collector of the second transistor; the gate of the third NMOS transistor is connected to the gate of the fourth NMOS transistor; the gate of the third NMOS transistor is connected to the LC_PWR port via the tenth resistor; the drain of the fourth NMOS transistor is connected to the LC_PWR port.

[0041] In practical applications, the microcontroller 52 controls two NMOS transistor circuits through the COM port and SEC port to convert the amplified voltage output by the operational amplifier module 53 into square waves with the same amplitude but opposite phase. These square waves are then applied to the back electrode and segment electrode of the electrically controlled dimming glass lens 2 through the LC_COM port and LC_SEC port, respectively, to drive the electrically controlled dimming glass lens 2 and control its reflectivity and transmittance.

[0042] This application also proposes an automatic anti-glare streaming media rearview mirror, such as Figure 1 and Figure 2 As shown, it includes: a housing 1, an electrically controlled dimming glass lens 2, a front ambient light sensor 3, a rear ambient light sensor 4, and a brightness adjustment module 5 as described above; the brightness adjustment module 5 is disposed inside the housing 1; the electrically controlled dimming glass lens 2 is disposed on one side of the housing 1; the front ambient light sensor 3 is disposed on the other side of the housing 1; the rear ambient light sensor 4 is disposed on one side of the housing 1; the front ambient light sensor 3, the rear ambient light sensor 4, and the electrically controlled dimming glass lens 2 are all electrically connected to the brightness adjustment module 5.

[0043] In practical applications, the intensity of light directly hitting the electronically controlled dimming glass lens 2 from a vehicle approaching from behind can be calculated using the front ambient light sensor 3 and the rear ambient light sensor 4. This allows for more precise control of the reflectivity and transmittance of the electronically controlled dimming glass lens 2, thereby achieving the anti-glare function.

[0044] This application also proposes an automatic anti-glare method for an automatic anti-glare streaming media rearview mirror, such as... Figure 6 As shown, it includes:

[0045] Step 100: Obtain the front illumination intensity information and the rear illumination intensity information received by the front ambient light sensor 3 and the rear ambient light sensor 4, respectively;

[0046] Step 200: Calculate the change in light intensity behind the camera based on the front and rear light intensity information;

[0047] Step 300: Calculate the reflectivity of the electronically controlled dimming glass lens 2 based on the change in rear light intensity;

[0048] Step 400: Calculate the digital-to-analog converter module 51 and adjust the output voltage value based on the reflectivity;

[0049] Step 500: Adjust the reflectivity of the electronically controlled dimming glass lens 2 according to the voltage value.

[0050] In practical applications, the front ambient light sensor 3 and the rear ambient light sensor 4 acquire the front and rear light intensity information of the vehicle, respectively. The difference between the rear and front light intensity information is used to calculate the rear light intensity change value, thereby determining the light intensity of the vehicle approaching from behind directly hitting the electronically controlled dimming glass lens 2. Based on the pre-established functional relationship between voltage and reflectivity, as well as the functional relationship between light intensity and reflectivity, the voltage value required to achieve the optimal reflectivity under the current light intensity is calculated. The microcontroller 52 then controls the digital-to-analog converter 51 to adjust the output voltage value and control the electronically controlled dimming glass lens 2 to adjust its reflectivity. Since the rear ambient light sensor 4 can generate the rear light intensity change value when it detects the change in light intensity of the vehicle approaching from behind, and the current output voltage value can be obtained by performing a simple function calculation based on the rear light intensity change value, the reflectivity of the electronically controlled dimming glass lens 2 can be quickly adjusted to achieve the anti-glare effect of the electronically controlled dimming glass lens 2.

[0051] Further, the step of controlling the reflectivity of the electrically controlled dimming glass lens 2 according to the voltage value includes:

[0052] The digital-to-analog converter module 51 is controlled to output the corresponding voltage V0 according to the voltage value;

[0053] The operational amplifier module 53 receives the voltage V0 and amplifies it to output voltage V1.

[0054] The control circuit 54 generates a first square wave and a second square wave with the same amplitude but opposite phase according to the voltage V1.

[0055] The reflectivity of the electronically controlled dimming glass lens 2 is adjusted according to the first square wave and the second square wave.

[0056] In practical applications, the microcontroller 52 reads the front and rear light intensity information via I2C and calculates the change in rear light intensity. Then, based on the pre-established functional relationship between voltage and reflectivity and the functional relationship between light intensity and reflectivity, it calculates the required voltage value and controls the MCP47A1 chip to output the corresponding voltage V0. The voltage V0 passes through the voltage follower MCP6006 composed of operational amplifier ICs to reduce the output impedance and improve the load-carrying capacity. The voltage V1 is output to the control circuit 54 through the LC_PWR port. The control circuit 54 receives the voltage V1 and generates two 64Hz square waves with the same amplitude but opposite phase based on the electrical signals received by the SEC and COM ports, respectively. These square waves are then output from the LC_SEC and LC_COM ports to the back electrode and segment electrode of the electrically controlled dimming glass lens 2, thereby driving the electrically controlled dimming glass lens 2 and controlling its reflectivity and transmittance.

[0057] The present invention provides an automatic anti-glare streaming media rearview mirror that can adjust the anti-glare effect of the mirror according to the light intensity of oncoming vehicles.

[0058] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A brightness adjustment module for an automatic anti-glare streaming media rearview mirror, characterized in that, include: The system includes a digital-to-analog converter module, a microcontroller for controlling the output voltage of the digital-to-analog converter module according to the brightness, an operational amplifier module for increasing the output voltage, and a control circuit for driving the rearview mirror according to the output voltage; the microcontroller is connected to the control circuit in sequence through the digital-to-analog converter module and the operational amplifier module. The microcontroller receives the light intensity from the vehicle behind and controls the digital-to-analog converter to output the corresponding voltage based on the light intensity. The amplified voltage is then converted into a square wave with the same amplitude but opposite phase by the control circuit and applied to the back electrode and segment electrode of the electronically controlled dimming glass lens to control the reflectivity and transmission of the electronically controlled dimming glass lens. The digital-to-analog converter module includes: a first chip, a first capacitor, and a first ferrite bead; a first terminal of the first chip is connected to a sixth terminal of the first chip; a first terminal of the first chip is connected to a DAC_5V port; a first terminal of the first chip is connected to an LCD_5V port via the first ferrite bead; a first terminal of the first chip is grounded via the first capacitor; a second terminal of the first chip is grounded; a third terminal of the first chip is connected to the SCL_DAC port of the controller; a fourth terminal of the first chip is connected to the SDA_DAC port of the controller; a fifth terminal of the first chip is connected to a transport amplifier module; and a sixth terminal of the first chip is connected to the DAC_5V port. The operational amplifier module includes: a second chip, a first resistor, a second resistor, a third resistor, a fourth resistor, and a second capacitor; the first terminal of the second chip is connected to the LC_PWR port through the first resistor; the second terminal of the second chip is grounded; the third terminal of the second chip is connected to the digital-to-analog converter module through the second resistor; the third terminal of the second chip is grounded through the second capacitor; the third terminal of the second chip is grounded sequentially through the second resistor and the third resistor; the fourth terminal of the second chip is connected to the LC_PWR port sequentially through the fourth resistor and the first resistor; the fifth terminal of the second chip is connected to the DAC_5V port. The control circuit includes: a first NMOS transistor, a second NMOS transistor, a third NMOS transistor, a fourth NMOS transistor, a first transistor, a second transistor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a ninth resistor, and a tenth resistor.

2. The brightness adjustment module of the automatic anti-glare streaming media rearview mirror according to claim 1, characterized in that, The source of the first NMOS transistor is grounded; the source of the first NMOS transistor is connected to the emitter of the first transistor; the source of the first NMOS transistor is connected to the base of the first transistor through a fifth resistor; the source of the first NMOS transistor is connected to the LC_SEC port through a fifth resistor and a sixth resistor in sequence; the drain of the first NMOS transistor is connected to the source of the second NMOS transistor; the drain of the first NMOS transistor is connected to the SEC port; the gate of the first NMOS transistor is connected to the collector of the first transistor; the gate of the first NMOS transistor is connected to the gate of the second NMOS transistor; the gate of the first NMOS transistor is connected to the LC_PWR port through a seventh resistor; the drain of the second NMOS transistor is connected to the LC_PWR port. The source of the third NMOS transistor is grounded; the source of the third NMOS transistor is connected to the emitter of the second transistor; the source of the third NMOS transistor is connected to the base of the second transistor through an eighth resistor; the source of the third NMOS transistor is connected to the LC_COM port through an eighth resistor and a ninth resistor in sequence; the drain of the third NMOS transistor is connected to the source of the fourth NMOS transistor; the drain of the third NMOS transistor is connected to the COM port; the gate of the third NMOS transistor is connected to the collector of the second transistor; the gate of the third NMOS transistor is connected to the gate of the fourth NMOS transistor; the gate of the third NMOS transistor is connected to the LC_PWR port through a tenth resistor; the drain of the fourth NMOS transistor is connected to the LC_PWR port.

3. An automatic anti-glare streaming media rearview mirror, characterized in that, include: The housing, the electronically controlled dimming glass lens, the front ambient light sensor, the rear ambient light sensor, and the brightness adjustment module as described in claim 1; The brightness adjustment module is disposed inside the housing; the electrically controlled dimming glass lens is disposed on one side of the housing; the front ambient light sensor is disposed on the other side of the housing; the rear ambient light sensor is disposed on one side of the housing; the front ambient light sensor, the rear ambient light sensor and the electrically controlled dimming glass lens are all electrically connected to the brightness adjustment module.

4. An automatic anti-glare method for an automatic anti-glare streaming media rearview mirror based on claim 3, characterized in that, include: The front and rear ambient light intensity information received by the front and rear ambient light sensors are acquired respectively. Calculate the change in light intensity behind the camera based on the front and rear light intensity information; The reflectivity of the electronically controlled dimming glass lens is calculated based on the change in the rear light intensity. The digital-to-analog converter module adjusts the output voltage value based on the reflectivity. The reflectivity of the electronically controlled dimming glass lens is adjusted according to the voltage value.

5. The automatic anti-glare method according to claim 4, characterized in that, The step of controlling the reflectivity of the electronically controlled dimming glass lens according to the voltage value includes: The digital-to-analog converter module is controlled to output the corresponding voltage V0 based on the voltage value; The operational amplifier module receives the voltage V0 and amplifies it to output voltage V1. The control circuit generates a first square wave and a second square wave with the same amplitude but opposite phase according to the voltage V1. The reflectivity of the electronically controlled dimming glass lens is adjusted according to the first square wave and the second square wave.

Images