A dimming controller, an automotive sunroof control system, and an automotive

Abstract

The embodiment of the present invention discloses a dimming controller, a car sunroof control system and a car, wherein the dimming controller includes: a local interconnection network bus transceiver module, a microcontroller unit, a boost module and an inverter control output module; the local interconnection network bus transceiver module is connected to the microcontroller unit and the car controller; the microcontroller unit is connected to the inverter control output module and the car power supply; it is used to output a corresponding pulse width modulation signal according to a control instruction; the boost module is connected to the inverter control output module and the car power supply, and outputs the boosted DC voltage to the inverter control output module; the inverter control output module converts the DC voltage into an AC voltage according to the pulse width modulation signal, and outputs it to the car sunroof glass end to adjust the light transmittance of the car sunroof glass. The technical solution disclosed in the embodiment of the present invention can adjust the glass transmittance according to user needs, and simplifies the control system, which is simple and convenient, and saves car space.

Description

Technical Field

[0001] The embodiments of the present invention relate to the field of automobile sunroofs, and in particular to a dimming controller, an automobile sunroof control system and an automobile. Background Art

[0002] Dimmable glass, commonly known as dimmable glass or electro-dimmable glass, changes the light transmission performance of the glass by applying voltage to the dimming layer of the glass to change the micro-profit or material properties inside the dimming glass. Due to technical limitations, it has not yet been promoted in the field of automotive sunroofs.

[0003] In the prior art, automobile sunroofs generally use solutions such as sunshades, sunshade slide rails, and automobile films to block sunlight.

[0004] Through sunshades, sunshade rails and car films, the mechanical motor assembly is complex and the system structure is cumbersome. It not only occupies more space inside the car, but also cannot change the light transmittance according to user needs. Summary of the invention

[0005] The embodiments of the present invention provide a dimming controller, a car sunroof control system and a car, aiming to achieve that the light transmittance of the car sunroof glass can be arbitrarily adjusted according to user needs, and to simplify the car sunroof system, thereby solving the problems of inconvenient adjustment of the light transmittance of the vehicle glass and complex system.

[0006] To achieve this purpose, in a first aspect, an embodiment of the present invention provides a dimming controller, the dimming controller comprising:

[0007] Local area interconnection network bus transceiver module, micro control unit, boost module and inverter control output module;

[0008] The local area interconnection network bus transceiver module is electrically connected to the micro control unit and the external vehicle controller, and is used to realize communication between the micro control unit and the external vehicle controller;

[0009] The microcontroller unit is electrically connected to the inverter control output module and the external vehicle power supply, and is used to generate and output a corresponding pulse width modulation signal according to an externally input vehicle sunroof transmittance control instruction;

[0010] The boost module is electrically connected to the inverter control output module and the external vehicle power supply, and is used to boost the DC voltage input by the external vehicle power supply, and output the boosted DC voltage to the inverter control output module;

[0011] The inverter control output module is used to convert the DC voltage input by the boost module into a corresponding AC voltage according to the pulse width modulation signal, and output the AC voltage to the voltage control end of the external automobile sunroof glass to adjust the transmittance of the external automobile sunroof glass.

[0012] Optionally, the micro control unit includes a receiving port, a transmitting port and a pulse width modulation port;

[0013] The local area interconnect network bus transceiver module is electrically connected to the micro control unit through the receiving port and the sending port;

[0014] The inverter control output module is electrically connected to the micro control unit through the pulse width modulation port.

[0015] Optionally, the micro control unit further includes a control port, and the control port is used to connect to an external digital and analog switch.

[0016] Optionally, the boost module includes: a power protection unit, a boost conversion unit, a voltage monitoring unit and a voltage regulating unit;

[0017] The power protection unit is electrically connected to the boost conversion unit and is used to protect the power supply circuit;

[0018] The boost conversion unit is electrically connected to the power protection unit and the voltage monitoring unit, and is used to boost the DC voltage input from the external automobile power supply;

[0019] The voltage monitoring unit is also electrically connected to the power protection unit and the inverter control output module, and is used to monitor the boost state of the boost conversion unit;

[0020] The voltage regulating unit is electrically connected to the power protection unit to prevent reverse connection of the power supply.

[0021] Optionally, the inverter control output module includes: an energy storage unit, a logic control unit, a first inverter switch, a second inverter switch, a first inverter circuit unit, a second inverter circuit unit and a protection monitoring unit;

[0022] The energy storage unit is electrically connected to the boost module and the logic control unit, and is used to provide a DC voltage output by the boost module;

[0023] The logic control unit is used to control the on and off of the first inverter circuit unit and the second inverter circuit unit;

[0024] The micro control unit is electrically connected to the logic control unit through the first inverter switch and the second inverter switch, and the first inverter switch and the second inverter switch are used to transmit the pulse width modulation signal sent by the micro control unit;

[0025] The first inverter circuit unit and the second inverter circuit unit are electrically connected to the logic control unit, and the first inverter circuit unit and the second inverter circuit unit are used to convert the DC voltage input by the boost module into a corresponding AC voltage;

[0026] The protection monitoring unit is electrically connected to the logic control unit and is used to protect the inverter control output circuit in the inverter control output module.

[0027] Optionally, the dimming controller further includes: a load protection module;

[0028] The load protection module is electrically connected to the micro control unit and the inverter control output module, and is used to protect the load circuit.

[0029] Optionally, the dimming controller further includes: a filtering module;

[0030] The filter module is electrically connected to the inverter control output module and is used to stabilize the output circuit.

[0031] In a second aspect, an embodiment of the present invention further provides a vehicle sunroof control system, the vehicle sunroof control system comprising:

[0032] An external vehicle controller, a connector, a vehicle sunroof, and a dimming controller as described in any one of the first aspects above;

[0033] The connector includes a circuit substrate and an automobile power supply and a local interconnection network bus interface located on the circuit substrate, wherein the automobile power supply is used to supply power to the micro control unit and the boost module, and the local interconnection network bus interface is used to realize communication between the local interconnection network bus transceiver module and the external automobile controller;

[0034] The external automobile controller is electrically connected to the connector and is used to send an automobile sunroof transmittance control instruction control signal;

[0035] The connector is also electrically connected to the dimming controller, and is used to transmit the automobile sunroof transmittance control instruction control signal to the dimming controller;

[0036] The dimming controller is electrically connected to the vehicle sunroof and is used to adjust the voltage of the vehicle sunroof.

[0037] Optionally, the connector further comprises digital and analog switches;

[0038] The digital and analog switch is electrically connected to the dimming controller and is used to generate and transmit a first automobile sunroof transmittance control instruction according to a user operation.

[0039] Optionally, a photosensitive sensor is further included, which is electrically connected to the external automobile controller and is used to generate and transmit a second automobile sunroof transmittance control instruction according to ambient light.

[0040] In a third aspect, an embodiment of the present invention further provides a car, comprising a car sunroof control system as described in any one of the second aspects above.

[0041] The embodiments of the present invention disclose a dimming controller, a car sunroof control system and a car. The DC voltage of an external car power supply is boosted by a boost module, and the boosted voltage is transmitted to an inverter control output module. The DC voltage is changed into an AC voltage for controlling the external car sunroof glass by an inverter control output circuit, thereby realizing voltage control of the external car sunroof glass. The car sunroof transmittance control instruction issued by the external car controller is received by a local area interconnection network bus transceiver module, and the car sunroof transmittance control instruction is transmitted to a microcontroller unit. The microcontroller unit generates a pulse width modulation signal according to the car sunroof transmittance control instruction, and transmits the pulse width modulation signal to the inverter control output module. The AC voltage value output by the inverter control output module is changed by the pulse width modulation signal, thereby changing the AC voltage value output to the external car sunroof glass end, thereby adjusting the transmittance of the sunroof glass. The microcontroller unit generates a corresponding pulse width modulation signal according to the external control command, thereby changing the AC voltage value output by the inverter control output module. The light transmittance of the sunroof glass can be adjusted at any time according to the needs of the user. It is simple and convenient, easy to operate, simplifies the vehicle system, and saves vehicle space. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 It is a structural schematic diagram of a dimming controller provided by an embodiment of the present invention.

[0043] Figure 2 It is a schematic diagram of a TLE9842 model micro control unit provided in an embodiment of the present invention.

[0044] Figure 3 It is a structural schematic diagram of another dimming controller provided by an embodiment of the present invention.

[0045] Figure 4 It is a schematic diagram of the structure of a boost converter provided by an embodiment of the present invention.

[0046] Figure 5 It is a structural schematic diagram of an inverter conversion output module in a dimming controller provided by an embodiment of the present invention.

[0047] Figure 6 It is a schematic diagram of a filtered alternating current waveform provided by an embodiment of the present invention.

[0048] Figure 7 The diagram is a schematic structural diagram of a vehicle sunroof control system provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0049] In order to make the technical problems solved by the embodiments of the present invention, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the present invention are further described below in conjunction with the accompanying drawings and through specific implementation methods. It is understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention are shown in the accompanying drawings, rather than all of the contents. Before discussing the exemplary embodiments in more detail, it should be mentioned that some exemplary embodiments are described as processes or methods depicted as flow charts.

[0050] Figure 1 is a schematic diagram of the structure of a dimming controller provided by an embodiment of the present invention, such as Figure 1 As shown, a dimming controller 1 includes:

[0051] A local area interconnection network bus transceiver module 10, a micro control unit 11, a boost module 12 and an inverter control output module 13;

[0052] The local area interconnection network bus transceiver module 10 is electrically connected to the micro control unit 11 and the external vehicle controller, and is used to realize the communication between the micro control unit 11 and the external vehicle controller;

[0053] The micro control unit 11 is electrically connected to the inverter control output module 13 and the external vehicle power supply, and is used to generate and output a corresponding pulse width modulation signal according to an externally input vehicle sunroof transmittance control instruction;

[0054] The boost module 12 is electrically connected to the inverter control output module 13 and the external vehicle power supply, and is used to boost the DC voltage input from the external vehicle power supply, and output the boosted DC voltage to the inverter control output module 13;

[0055] The inverter control output module 13 is used to convert the DC voltage input by the boost module 12 into a corresponding AC voltage according to the pulse width modulation signal, and output the AC voltage to the voltage control terminal of the external automobile sunroof glass to adjust the light transmittance of the external automobile sunroof glass.

[0056] The Local Interconnect Network (LIN) is a control bus for lights, seats, windows, etc. in a car. The microcontroller unit 11 (MCU) can be a logic control microcomputer. For example, the microcontroller unit 11 can be a TLE9842 model. Figure 2 Schematic diagram of the TLE9842 model microcontroller unit provided by an embodiment of the present invention, and the automobile sunroof transmittance control instruction can be a LIN signal. The microcontroller unit 11 is connected to the external automobile controller through the local area interconnection network bus, and the automobile sunroof transmittance control instruction is sent through the external automobile controller. The microcontroller unit 11 outputs the corresponding pulse width modulation signal to the inverter control output module 13. At the same time, the boost module 12 boosts the DC voltage of the external automobile power supply to the required voltage of the inverter control output module 13, and provides power to the inverter control output module 13. The inverter control output module 13 converts the boosted DC power into an AC voltage for regulating the sunroof glass, and uses the pulse width modulation signal output by the microcontroller unit 11 to adjust the AC voltage output by the inverter control output module 13, thereby changing the AC voltage value applied to the sunroof glass, and then changing the transmittance of the sunroof glass. The voltage value of the automobile power supply is increased by the boost module 12, and the direct current is converted into alternating current by using the inverter control output module 13. The whole process is completed automatically without the need for user operation. The external automobile controller can be adjusted arbitrarily according to the user's needs, and the pulse width modulation signal output by the microcontroller unit 11 is changed, thereby adjusting the alternating voltage value output by the inverter control output module 13 to the sunroof glass. The method is simple, convenient and easy to operate, replacing the traditional sunroof sunshade cloth, window film, window slide rail and the motor assembly for controlling the sunshade curtain, saving vehicle space and simplifying the vehicle system.

[0057] Optionally, the micro control unit 11 includes a receiving port RX, a transmitting port TX and a pulse width modulation port PWM;

[0058] The local area interconnection network bus transceiver module 10 is electrically connected to the micro control unit 11 through the receiving port RX and the transmitting port TX;

[0059] The inverter control output module 13 is electrically connected to the micro control unit 11 via a pulse width modulation port PWM.

[0060] The microcontroller unit 11 receives the car sunroof transmittance control command sent by the external car controller through the receiving port RX, thereby improving the effectiveness and accuracy of the transmission. After the microcontroller unit 11 adjusts the transmittance of the car sunroof glass, the microcontroller unit 11 uses the sending port TX to send a feedback signal to the external car controller to ensure successful adjustment and improve the user experience. The microcontroller unit 11 sends a pulse width modulation signal to the inverter control output module 13 through the pulse width modulation port PWM to improve the stability of signal transmission.

[0061] Optionally, the micro control unit 11 further includes a control port 111, and the control port 111 is used to connect an external digital and analog switch.

[0062] It can be understood that the microcontroller unit 11 is connected to the external digital and analog switch through the control port 111. The user can directly adjust the microcontroller unit 11 through the external digital and analog switch to control the microcontroller unit 11 to send the corresponding pulse width modulation signal, thereby enriching the user's way of adjusting the transmittance of the sunroof glass, enhancing the user experience, and improving the operability of the control.

[0063] Figure 3 is a schematic diagram of the structure of another dimming controller provided by an embodiment of the present invention. Figure 3 As shown, optionally, the boost module 12 includes: a power protection unit 121, a boost conversion unit 122, a voltage monitoring unit 123 and a voltage regulating unit 124;

[0064] The power protection unit 121 is electrically connected to the boost conversion unit 122 and is used to protect the power supply circuit;

[0065] The boost conversion unit 122 is electrically connected to the power protection unit 121 and the voltage monitoring unit 123, and is used to boost the DC voltage input from the external automobile power supply;

[0066] The voltage monitoring unit 123 is also electrically connected to the power protection unit 121 and the inverter control output module 13, and is used to monitor the boost state of the boost conversion unit 122;

[0067] The voltage regulating unit 124 is electrically connected to the power protection unit 121 to prevent the power from being reversely connected.

[0068] The boost conversion unit 122 includes a boost converter 1221 and a boost transistor Q5, the input end of the boost converter 1221 is electrically connected to the power protection unit 121, the output end of the boost converter 1221 is electrically connected to the control end of the boost transistor Q5, the first end of the boost transistor Q5 is electrically connected to the power protection unit 121, and the second end of the boost transistor Q5 is grounded; the first end of the voltage monitoring unit 123 is electrically connected to the power protection unit 121, and the second end of the voltage monitoring unit 123 is electrically connected to the inverter control output module 13; the voltage regulating unit 124 includes a voltage regulator 1241 and a voltage regulating diode D1, the positive electrode of the voltage regulating diode D1 is electrically connected to the power protection unit 121, and the negative electrode of the voltage regulating diode D1 is electrically connected to the voltage regulator 1241. Exemplarily, Figure 4 is a schematic diagram of a boost converter structure provided by an embodiment of the present invention, such as Figure 4 As shown, the boost converter 1221 can be a LM5022 model. The DC power VIN input from the external car power supply is boosted via the boost converter 1221 and the transformer L1, and the boosted DC voltage V0 is output to the inverter control output module.

[0069] Figure 5 is a schematic diagram of the structure of an inverter conversion output module in a dimming controller provided by an embodiment of the present invention, such as Figure 5 As shown, optionally, the inverter control output module 13 includes: an energy storage unit 131, a logic control unit 132, a first inverter switch IN1, a second inverter switch IN2, a first inverter circuit unit 133, a second inverter circuit unit 134 and a protection monitoring unit 135;

[0070] The energy storage unit 131 is electrically connected to the boost module and the logic control unit 132, and is used to provide the DC voltage output by the boost module;

[0071] The logic control unit 132 is used to control the on and off of the first inverter circuit unit 133 and the second inverter circuit unit 134;

[0072] The micro control unit is electrically connected to the logic control unit 132 via the first inverter switch IN1 and the second inverter switch IN2. The first inverter switch IN1 and the second inverter switch IN2 are used to transmit the pulse width modulation signal sent by the micro control unit.

[0073] The first inverter circuit unit 133 and the second inverter circuit unit 134 are electrically connected to the logic control unit 132, and the first inverter circuit unit 133 and the second inverter circuit unit 134 are used to convert the DC voltage input by the boost module into a corresponding AC voltage;

[0074] The protection monitoring unit 135 is electrically connected to the logic control unit 132 and is used to protect the inverter control output circuit in the inverter control output module 13 .

[0075] Wherein, a first input end of the logic control unit 132 is electrically connected to the first inverter switch IN1, a second input end of the logic control unit 132 is electrically connected to the second inverter switch IN2, a first output end of the logic control unit 132 is electrically connected to the first inverter circuit unit 133, and a second output end of the logic control unit 132 is electrically connected to the second inverter circuit unit 134; further, the first inverter circuit unit 133 includes a first gate driver 1331, a first transistor Q1 and a second transistor Q2, a first input end of the first gate driver 1331 is electrically connected to the first output end of the logic control unit 132, a second input end of the first gate driver 1331 is electrically connected to the boost module, a first output end of the first gate driver 1331 is electrically connected to the control end of the first transistor Q1, a first end of the first transistor Q1 is electrically connected to the energy storage unit 131, a second end of the first transistor Q1 is electrically connected to the first end of the second transistor Q2, a second end of the second transistor Q2 is grounded, and a second output end of the first gate driver 1331 is electrically connected to the control end of the second transistor Q2;

[0076] Based on the same concept, the second inverter circuit unit 134 includes a second gate driver 1341, a third transistor Q3 and a fourth transistor Q4, the first input end of the second gate driver 1341 is electrically connected to the second output end of the logic control unit 132, the second input end of the second gate driver 1341 is electrically connected to the boost module, the first output end of the second gate driver 1341 is electrically connected to the control end of the third transistor Q3, the first end of the third transistor Q3 is electrically connected to the energy storage unit 131, the second end of the third transistor Q3 is electrically connected to the first end of the fourth transistor Q4, the second end of the fourth transistor is grounded, and the second output end of the second gate driver 1341 is electrically connected to the control end of the fourth transistor; the energy storage unit 131 is electrically connected to the logic control unit 132. In addition, the protection monitoring unit 135 includes a current monitoring unit 1351, a temperature detection unit 1352 and a voltage detection unit 1353. The current monitoring unit 1351 monitors the current in the inverter control output module 13 to prevent current overload; the temperature detection unit 1352 monitors the temperature in the inverter control output module 13 to prevent excessive temperature; the voltage detection unit 1353 monitors the voltage in the inverter control output module 13 to prevent voltage overload, thereby improving the safety performance of the entire system.

[0077] The DC voltage boosted by the boost module is transmitted through the energy storage unit 131 to supply power to the inverter control output module 13. The logic on / off of the first inverter circuit unit 133 and the second inverter circuit unit 134 is controlled through the logic control unit 132 to realize the conversion of DC to AC. At the same time, the pulse width modulation signal of the micro control unit is transmitted through the first inverter switch IN1 and the second inverter switch IN2 to adjust the logic on / off of the first inverter circuit unit 133 and the second inverter circuit unit 134 by the logic control unit 132, thereby simply and conveniently realizing the purpose of changing the output AC voltage of the inverter control output module 13. The conversion of DC to AC is realized through the electric control circuit, the circuit is simple, the whole process is automatically realized, the conversion efficiency is improved, and the voltage value of the output AC is changed by the micro control unit, so that the user can change the light transmittance of the sunroof glass at any time, which is convenient and efficient.

[0078] Continue to refer to Figure 3 ,like Figure 3 As shown, optionally, the dimming controller further includes: a load protection module 14;

[0079] The load protection module 14 is electrically connected to the micro control unit 11 and the inverter control output module 13 for protecting the load circuit.

[0080] The load protection module 14 is used to prevent the load from being damaged due to circuit problems such as overload, missing items and short circuit, thereby improving the safety performance of the system and ensuring the safety of users.

[0081] Optionally, the dimming controller further includes: a filtering module 15;

[0082] The filter module 15 is electrically connected to the inverter control output module 13 and is used to stabilize the output circuit.

[0083] For example, LC low-pass filtering can be used to filter out the 20KHz carrier wave and improve the stability of the AC voltage output. Figure 6 is a schematic diagram of a filtered AC waveform provided by an embodiment of the present invention, such as Figure 6 As shown, the sinusoidal image is an AC waveform output after LC low-pass filtering, with an effective value of 36V and a frequency of 50Hz. The AC voltage output by the inverter control output module 13 is filtered by the filter module 15 to improve the stability of the AC voltage and enhance the accuracy of controlling the sunroof glass.

[0084] Figure 7 is a structural schematic diagram of a vehicle sunroof control system provided by an embodiment of the present invention, such as Figure 7 As shown, a vehicle sunroof control system includes:

[0085] An external automobile controller 2, a connector 3, an automobile sunroof 4 and a dimming controller 1 as described in any one of the above;

[0086] The connector 3 includes a circuit substrate (not shown in the figure) and a vehicle power supply 31 and a local interconnection network bus interface 33 located on the circuit substrate. The vehicle power supply 31 is used to supply power to the micro control unit 11 and the boost module 12. The local interconnection network bus interface 33 is used to realize communication between the local interconnection network bus transceiver module 10 and the external vehicle controller 2.

[0087] The external automobile controller 2 is electrically connected to the connector 3 and is used to send an automobile sunroof transmittance control instruction control signal;

[0088] The connector 3 is also electrically connected to the dimming controller 1, and is used to transmit a vehicle sunroof transmittance control instruction control signal to the dimming controller 1;

[0089] The dimming controller 1 is electrically connected to the vehicle sunroof 4 and is used to adjust the voltage of the vehicle sunroof.

[0090] The external automobile controller 2 may be a body control module (BCM), and the external automobile controller 2 sends an automobile sunroof transmittance control command to the dimming controller 1 through the local area interconnection network bus interface 33 to improve the accuracy and stability of the command transmission. The automobile power supply 31 in the connector 3 provides a power supply voltage to the dimming controller 1. For example, the automobile power supply 31 provides a 12V DC voltage to power the dimming controller 1, and the dimming controller 1 converts the 12V DC voltage into a 51V AC voltage. The beneficial effects of the dimming controller 1 are the same as the above beneficial effects, and will not be repeated here.

[0091] Optionally, the connector 3 further includes a digital and analog switch 32;

[0092] The digital and analog switch 32 is electrically connected to the dimming controller 1 and is used to generate and transmit the first automobile sunroof transmittance control instruction according to the user operation.

[0093] The digital and analog switch 32 can be a knob switch, which is electrically connected to the control port 111 in the micro control unit 11. Through the digital and analog switch 32, the user can directly adjust the knob switch, and the output voltage of the inverter control output module 13 is controlled by the first automobile sunroof transmittance control instruction generated by the knob switch, thereby adjusting the transmittance of the sunroof glass, enriching the way to adjust the transmittance of the sunroof glass, and improving the user experience. For example, Table 1 is the corresponding relationship between the output voltage of the inverter control output module and the transmittance of the sunroof glass. As shown in Table 1, the digital and analog switch 32 is divided into ten gears, and the transmittance of the sunroof glass corresponding to each gear is controlled with an accuracy of approximately 10%. When the user operates the digital and analog switch 32 to gear 1, the voltage effective value of its output voltage is 0V, and the corresponding sunroof glass transmittance is 61.7%. When the user operates the digital and analog switch 32 to gear 10, the voltage effective value of its output voltage is 36V, and the corresponding sunroof glass transmittance is 79.6%, which is close to complete light transmission. In addition, illustratively, when the transmittance of the electronic control unit (ECU) is 0% or in the off state, the dimming controller will enter the sleep state when the electronic control unit 4S does not receive the vehicle sunroof transmittance control instruction or receives the sleep instruction until the vehicle sunroof transmittance control instruction wakes up the dimming controller to save power of the dimming controller.

[0094] Table 1. Correspondence between the output voltage of the inverter control output module and the light transmittance of the skylight glass

[0095] Voltage (Vac) 0 7.5 8.8 9.6 10.3 10.6 11.4 11.9 13 15.5 36 Transmittance(%) 61.7 63.49 65.28 67.07 68.86 70.65 72.44 74.23 76.02 77.81 79.6

[0096] Optionally, the vehicle sunroof control system further includes a photosensitive sensor 5, which is electrically connected to the external vehicle controller 2 and is used to generate and transmit a second vehicle sunroof transmittance control instruction according to ambient light.

[0097] The photosensitive sensor 5 can automatically capture the light intensity of the surrounding environment of the car, and the light intensity information is captured by the photosensitive sensor 5, and after the logic operation of the external car controller 2, the corresponding second car sunroof transmittance control instruction is issued, thereby automatically controlling the transmittance of the sunroof glass. Exemplarily, when the sunlight intensity is high in summer, the photosensitive sensor 5 captures the light intensity, and through the logic operation of the external car controller 2, it is concluded that the light intensity is too high, and the second car sunroof transmittance control instruction is automatically generated, which is transmitted to the dimming controller 1 via the local area interconnection network bus interface 33 of the connector 3, and the dimming controller 1 is used to reduce the voltage value of the output alternating current, thereby reducing the transmittance of the car sunroof 4, shielding the user from the strong external light, preventing the user from being stimulated by the strong light, reducing the impact of the light stimulation on the driver, and improving the passenger riding experience. For another example, when the photosensitive sensor 5 captures the light intensity and transmits it to the external car controller 2, the external car controller 2, through logical operations, concludes that the light intensity is too low, automatically generates a second car sunroof transmittance control instruction, and transmits it to the dimming controller 1 via the local area interconnection network bus interface 33 of the connector 3. The dimming controller 1 is used to increase the voltage value of the output AC power, thereby improving the transmittance of the car sunroof 4 and the light intensity in the car, creating a comfortable riding environment for the user. The use of the photosensitive sensor 5 enhances the intelligence of the sunroof glass transmittance adjustment and improves the adaptability of the sunroof glass. It does not require user operation and adopts an automatic sensing method to adapt to various lighting environments at any time. It is simple and convenient, and improves the user experience.

[0098] In addition, an embodiment of the present invention further provides a car, comprising any one of the above-mentioned car sunroof control systems.

[0099] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments, combinations and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A dimming controller, characterized in that: include: Local area interconnection network bus transceiver module, micro control unit, boost module and inverter control output module; The local area interconnection network bus transceiver module is electrically connected to the micro control unit and the external vehicle controller, and is used to realize communication between the micro control unit and the external vehicle controller; The microcontroller unit is electrically connected to the inverter control output module and the external vehicle power supply, and is used to generate and output a corresponding pulse width modulation signal according to an externally input vehicle sunroof transmittance control instruction; The boost module is electrically connected to the inverter control output module and the external vehicle power supply, and is used to boost the DC voltage input by the external vehicle power supply, and output the boosted DC voltage to the inverter control output module; The inverter control output module is used to convert the DC voltage input by the boost module into a corresponding AC voltage according to the pulse width modulation signal, and output the AC voltage to the voltage control end of the external automobile sunroof glass to adjust the transmittance of the external automobile sunroof glass.

2. The dimming controller according to claim 1, characterized in that: The micro control unit includes a receiving port, a transmitting port and a pulse width modulation port; The local area interconnect network bus transceiver module is electrically connected to the micro control unit through the receiving port and the sending port; The inverter control output module is electrically connected to the micro control unit through the pulse width modulation port.

3. The dimming controller according to claim 2, characterized in that: The micro control unit also includes a control port, and the control port is used to connect to external digital and analog switches.

4. The dimming controller according to claim 3, characterized in that: The boost module includes: a power protection unit, a boost conversion unit, a voltage monitoring unit and a voltage regulating unit; The power protection unit is electrically connected to the boost conversion unit and is used to protect the power supply circuit; The boost conversion unit is electrically connected to the power protection unit and the voltage monitoring unit, and is used to boost the DC voltage input from the external automobile power supply; The voltage monitoring unit is also electrically connected to the power protection unit and the inverter control output module, and is used to monitor the boost state of the boost conversion unit; The voltage regulating unit is electrically connected to the power protection unit to prevent reverse connection of the power supply.

5. The dimming controller according to claim 4, characterized in that: The inverter control output module includes: an energy storage unit, a logic control unit, a first inverter switch, a second inverter switch, a first inverter circuit unit, a second inverter circuit unit and a protection monitoring unit; The energy storage unit is electrically connected to the boost module and the logic control unit, and is used to provide a DC voltage output by the boost module; The logic control unit is used to control the on and off of the first inverter circuit unit and the second inverter circuit unit; The micro control unit is electrically connected to the logic control unit through the first inverter switch and the second inverter switch, and the first inverter switch and the second inverter switch are used to transmit the pulse width modulation signal sent by the micro control unit; The first inverter circuit unit and the second inverter circuit unit are electrically connected to the logic control unit, and the first inverter circuit unit and the second inverter circuit unit are used to convert the DC voltage input by the boost module into a corresponding AC voltage; The protection monitoring unit is electrically connected to the logic control unit and is used to protect the inverter control output circuit in the inverter control output module.

6. The dimming controller according to claim 1, characterized in that: The dimming controller also includes: a load protection module and a filtering module; The load protection module is electrically connected to the micro control unit and the inverter control output module, and is used to protect the load circuit; The filter module is electrically connected to the inverter control output module and is used to stabilize the output circuit.

7. A car sunroof control system, characterized in that: include: An external automobile controller, a connector, an automobile sunroof, and a dimming controller as claimed in any one of claims 1 to 6; The connector includes a circuit substrate and an automobile power supply and a local interconnection network bus interface located on the circuit substrate, wherein the automobile power supply is used to supply power to the micro control unit and the boost module, and the local interconnection network bus interface is used to realize communication between the local interconnection network bus transceiver module and the external automobile controller; The external automobile controller is electrically connected to the connector and is used to send an automobile sunroof transmittance control instruction control signal; The connector is also electrically connected to the dimming controller, and is used to transmit the automobile sunroof transmittance control instruction control signal to the dimming controller; The dimming controller is electrically connected to the vehicle sunroof and is used to adjust the voltage of the vehicle sunroof.

8. The automobile sunroof control system according to claim 7, characterized in that: The connector also includes digital and analog switches; The digital and analog switch is electrically connected to the dimming controller and is used to generate and transmit a first automobile sunroof transmittance control instruction according to a user operation.

9. The automobile sunroof control system according to claim 7, characterized in that: It also includes a photosensitive sensor, which is electrically connected to the external automobile controller and is used to generate and transmit a second automobile sunroof transmittance control instruction according to ambient light.

10. An automobile, characterized in that: The vehicle sunroof control system comprises the one described in any one of claims 7-9.

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