CN111208657A - Dimming controller, sunroof control system and car - Google Patents
Dimming controller, sunroof control system and car Download PDFInfo
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- CN111208657A CN111208657A CN202010195781.XA CN202010195781A CN111208657A CN 111208657 A CN111208657 A CN 111208657A CN 202010195781 A CN202010195781 A CN 202010195781A CN 111208657 A CN111208657 A CN 111208657A
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/0121—Operation of devices; Circuit arrangements, not otherwise provided for in this subclass
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
- B60J7/00—Non-fixed roofs; Roofs with movable panels, e.g. rotary sunroofs
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Abstract
The embodiment of the invention discloses a dimming controller, an automobile skylight control system and an automobile, wherein the dimming controller comprises: the system comprises a local area internet bus transceiving module, a micro control unit, a boosting module and an inversion control output module; the local area internet bus transceiver module is connected with the micro control unit and the automobile controller; the micro control unit is connected with the inversion control output module and the automobile power supply; the pulse width modulation circuit is used for outputting a corresponding pulse width modulation signal according to the control instruction; the boosting module is connected with the inversion control output module and the automobile power supply and outputs the boosted direct-current voltage to the inversion control output module; the inversion control output module converts the direct-current voltage into alternating-current voltage according to the pulse width modulation signal, outputs the alternating-current voltage to the end of the automobile skylight glass and adjusts the light transmittance of the automobile skylight glass. The technical scheme disclosed by the embodiment of the invention can adjust the light transmittance of the glass according to the requirements of users, simplifies the control system, is simple and convenient and saves the space of an automobile.
Description
Technical Field
The embodiment of the invention relates to the field of automobile skylights, in particular to a dimming controller, an automobile skylight control system and an automobile.
Background
The light control glass, commonly called as light control glass or electro-light control glass, changes the tiny advantages or material characteristics in the light control glass by applying voltage to the light control interlayer of the glass, thereby changing the light transmission performance of the glass. Due to technical limitation, the automobile skylight has not been popularized and used in the field of automobile skylights currently.
In the prior art, a sunroof generally adopts a sunshade, a sunshade slide rail, an automobile film and other schemes to shade sunlight.
Through modes such as sunshade screen, sunshade slide rail and car pad pasting, its mechanical motor assembly is complicated, and system architecture is loaded down with trivial details, not only possesses car inner space more, can not change the luminousness according to user's demand moreover.
Disclosure of Invention
The embodiment of the invention provides a dimming controller, an automobile skylight control system and an automobile, and aims to realize that the light transmittance of automobile skylight glass can be randomly adjusted according to the needs of users, simplify the automobile skylight system and solve the problems of inconvenience in adjustment of the light transmittance of vehicle-mounted glass and complexity of the system.
To achieve the object, in a first aspect, an embodiment of the present invention provides a dimming controller, including:
the system comprises a local area internet bus transceiving module, a micro control unit, a boosting module and an inversion control output module;
the local area internet bus transceiver module is electrically connected with the micro control unit and an external automobile controller and is used for realizing communication between the micro control unit and the external automobile controller;
the micro control unit is electrically connected with the inversion control output module and an external automobile power supply and is used for generating and outputting a corresponding pulse width modulation signal according to an automobile skylight light transmittance control instruction input from the outside;
the boosting module is electrically connected with the inversion control output module and the external automobile power supply, and is used for boosting the direct-current voltage input by the external automobile power supply and outputting the boosted direct-current voltage to the inversion control output module;
the inversion control output module is used for converting the direct-current voltage input by the boosting module into corresponding alternating-current voltage according to the pulse width modulation signal and outputting the alternating-current voltage to a voltage control end of external automobile skylight glass so as to adjust the light transmittance of the external automobile skylight glass.
Optionally, the micro control unit includes a receiving port, a transmitting port, and a pulse width modulation port;
the local area internet bus transceiver module is electrically connected with the micro control unit through the receiving port and the sending port;
the inversion control output module is electrically connected with the micro control unit through the pulse width modulation port.
Optionally, the micro control unit further comprises a control port for connecting an external digital and analog switch.
Optionally, the boost module comprises: the device comprises a power supply protection unit, a boost conversion unit, a voltage monitoring unit and a voltage regulation unit;
the power supply protection unit is electrically connected with the boost conversion unit and used for protecting the power supply circuit;
the voltage boosting conversion unit is electrically connected with the power protection unit and the voltage monitoring unit and is used for boosting the direct-current voltage input by the external automobile power supply;
the voltage monitoring unit is also electrically connected with the power supply protection unit and the inversion control output module and is used for monitoring the boosting state of the boosting conversion unit;
the voltage regulating unit is electrically connected with the power supply protection unit and used for preventing the reverse connection of the power supply.
Optionally, the inverter control output module includes: the energy storage unit, the logic control unit, the first inverter switch, the second inverter switch, the first inverter circuit unit, the second inverter circuit unit and the protection monitoring unit;
the energy storage unit is electrically connected with the boosting module and the logic control unit and is used for providing direct-current voltage output by the boosting module;
the logic control unit is used for controlling the on-off of the first inverter circuit unit and the second inverter circuit unit;
the micro control unit is electrically connected with 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 for transmitting the pulse width modulation signals sent by the micro control unit;
the first inverter circuit unit and the second inverter circuit unit are electrically connected with the logic control unit and are used for converting the direct-current voltage input by the boosting module into corresponding alternating-current voltage;
and the protection monitoring unit is electrically connected with the logic control unit and is used for protecting an inversion control output circuit in the inversion control output module.
Optionally, the dimming controller further comprises: a load protection module;
the load protection module is electrically connected with the micro control unit and the inversion control output module and is used for protecting a load circuit.
Optionally, the dimming controller further comprises: a filtering module;
the filtering module is electrically connected with the inversion control output module and used for stabilizing the output circuit.
In a second aspect, an embodiment of the present invention further provides an automobile sunroof control system, where the automobile sunroof control system includes:
an external automotive controller, a connector, an automotive sunroof and a dimmer control as described in any of the first aspects above;
the connector comprises a circuit substrate, an automobile power supply and a local area internet bus interface, wherein the automobile power supply and the local area internet bus interface are positioned on the circuit substrate, the automobile power supply is used for supplying power to the micro control unit and the boosting module, and the local area internet bus interface is used for realizing communication between the local area internet bus transceiver module and the external automobile controller;
the external automobile controller is electrically connected with the connector and is used for sending an automobile skylight light transmittance control instruction control signal;
the connector is also electrically connected with the dimming controller and is used for transmitting a control signal of the light transmittance control instruction of the automobile skylight to the dimming controller;
the dimming controller is electrically connected with the automobile skylight and used for adjusting the voltage of the automobile skylight.
Optionally, the connector further comprises digital and analog switches;
the digital and analog switch is electrically connected with the dimming controller and used for generating and transmitting a light transmittance control instruction of the first automobile skylight according to user operation.
Optionally, the control system further comprises a photosensitive sensor, wherein the photosensitive sensor is electrically connected with the external automobile controller and used for generating and transmitting a second automobile skylight light transmittance control instruction according to ambient light.
In a third aspect, an embodiment of the present invention further provides an automobile, where the automobile includes the sunroof control system according to any one of the second aspects.
According to the dimming controller, the automobile skylight control system and the automobile disclosed by the embodiment of the invention, the direct-current voltage of an external automobile power supply is boosted through the boosting module, the boosted voltage is transmitted to the inversion control output module, and the direct-current voltage is changed into the alternating-current voltage for controlling the external automobile skylight glass by using the inversion control output circuit, so that the voltage control of the external automobile skylight glass is realized; the control method comprises the steps that an automobile skylight light transmittance control instruction sent by an external automobile controller is received through a local area internet bus transceiving module and is transmitted to a micro control unit, the micro control unit generates a pulse width modulation signal according to the automobile skylight light transmittance control instruction and transmits the pulse width modulation signal to an inversion control output module, an alternating current voltage value output by the inversion control output module is changed through the pulse width modulation signal, an alternating current voltage value output to an external automobile skylight glass end is changed, and then the light transmittance of skylight glass is adjusted. The micro control unit generates a corresponding pulse width modulation signal according to an external control instruction, so that an alternating voltage value output by the inversion control output module is changed, the light transmittance of the skylight glass can be adjusted at any time according to the needs of a user, the method is simple and convenient, the operation is easy, a vehicle-mounted system is simplified, and the vehicle-mounted space is saved.
Drawings
Fig. 1 is a schematic structural diagram of a dimming controller according to an embodiment of the present invention.
Fig. 2 is a schematic diagram of a TLE9842 model micro control unit provided by an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of another dimming controller according to an embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a boost converter according to an embodiment of the present invention.
Fig. 5 is a schematic structural diagram of an inverter conversion output module in a dimming controller according to an embodiment of the present invention.
Fig. 6 is a schematic diagram of an ac waveform after being filtered according to an embodiment of the present invention.
Fig. 7 is a schematic structural diagram of an automobile sunroof control system according to an embodiment of the present invention.
Detailed Description
In order to make the technical problems solved, the technical solutions adopted, and the technical effects achieved by the embodiments of the present invention clearer, the technical solutions of the present invention are further described below by way of specific embodiments with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some but not all of the relevant aspects of the present invention are shown in the drawings. Before discussing exemplary embodiments in more detail, it should be noted that some exemplary embodiments are described as processes or methods depicted as flowcharts.
Fig. 1 is a schematic structural diagram of a dimming controller according to an embodiment of the present invention, and as shown in fig. 1, a dimming controller 1 includes:
the system comprises a local area internet bus transceiving module 10, a micro control unit 11, a boosting module 12 and an inversion control output module 13;
the local area internet bus transceiver module 10 is electrically connected with the micro control unit 11 and an external automobile controller, and is used for realizing communication between the micro control unit 11 and the external automobile controller;
the micro control unit 11 is electrically connected with the inverter control output module 13 and an external automobile power supply and is used for generating and outputting a corresponding pulse width modulation signal according to an automobile skylight light transmittance control instruction input from the outside;
the boosting module 12 is electrically connected with the inversion control output module 13 and the external automobile power supply, and is used for boosting the direct-current voltage input by the external automobile power supply and outputting the boosted direct-current voltage to the inversion control output module 13;
the inverter control output module 13 is configured to convert the dc voltage input by the voltage boost module 12 into a corresponding ac voltage according to the pulse width modulation signal, and output the ac voltage to a voltage control end of the external sunroof glass, so as to adjust the light transmittance of the external sunroof glass.
A Local Interconnect Network (LIN) refers to control buses of a vehicle lamp, a seat, a window and the like in an automobile, a Micro Control Unit (MCU) 11 may be a logic control microcomputer, for example, the micro control Unit 11 may be of a TLE9842 model, fig. 2 is a schematic diagram of a TLE9842 model micro control Unit provided in an embodiment of the present invention, and a light transmittance control instruction of an automobile sunroof may be an LIN signal. The micro control unit 11 is connected with an external automobile controller through a local area internet bus, an automobile skylight light transmittance control instruction is sent through the external automobile controller, the micro control unit 11 outputs a corresponding pulse width modulation signal to the inversion control output module 13, meanwhile, the boosting module 12 boosts the direct current voltage of an external automobile power supply to the required voltage of the inversion control output module 13, electric energy is provided for the inversion control output module 13, the boosted direct current is converted into alternating current voltage for regulating and controlling skylight glass by the inversion control output module 13, the alternating current voltage output by the inversion control output module 13 is regulated by the pulse width modulation signal output by the micro control unit 11, therefore, the alternating current voltage value applied to the skylight glass is changed, and further, the light transmittance of the skylight glass is changed. Improve automobile power's voltage value through boost module 12, utilize contravariant control output module 13 to convert the direct current to the alternating current, whole journey is all automatic completion, need not user's own operation, regulate and control outside automobile controller wantonly according to user's demand, change the pulse width modulation signal of little the control unit 11 output, and then adjust contravariant control output module 13 and export skylight glass's alternating voltage value, and is simple and convenient, and easy to operate has replaced traditional skylight puggaree, the door window pad pasting, the motor assembly of door window slide rail and control sunshade screen, save on-vehicle space, simplify on-vehicle system.
Optionally, the micro control unit 11 includes a receiving port RX, a transmitting port TX and a pulse width modulation port PWM;
the local area internet bus transceiver module 10 is electrically connected with the micro control unit 11 through a receiving port RX and a transmitting port TX;
the inversion control output module 13 is electrically connected with the micro control unit 11 through a pulse width modulation port PWM.
The micro control unit 11 receives an automobile skylight light transmittance control instruction sent by an external automobile controller through the receiving port RX, transmission effectiveness and transmission accuracy are improved, after the light transmittance of the automobile skylight glass is adjusted through the micro control unit 11, the micro control unit 11 sends a feedback signal to the external automobile controller through the sending port TX, successful adjustment is guaranteed, and user experience is improved. The micro control unit 11 sends a pulse width modulation signal to the inversion control output module 13 through the pulse width modulation port PWM, so as to improve the stability of signal transmission.
Optionally, the micro control unit 11 further comprises a control port 111, and the control port 111 is used for connecting an external digital and analog switch.
It can be understood that little the control unit 11 passes through the control port 111 and connects outside digital and analog switch, and the user can directly adjust little the control unit 11 through outside digital and analog switch, controls little the control unit 11 and sends corresponding pulse width modulation signal, enriches the mode that the user adjusted skylight glass luminousness, and reinforcing user experience feels, promotes the operability of control.
Fig. 3 is a schematic structural diagram of another dimming controller according to an embodiment of the present invention, and as shown in fig. 3, optionally, the boost module 12 includes: a power supply protection unit 121, a boost conversion unit 122, a voltage monitoring unit 123, and a voltage adjustment unit 124;
the power protection unit 121 is electrically connected to the boost conversion unit 122, and is configured to protect the power supply circuit;
the boost conversion unit 122 is electrically connected with the power protection unit 121 and the voltage monitoring unit 123, and is used for boosting the direct-current voltage input by the external automobile power supply;
the voltage monitoring unit 123 is further electrically connected with the power protection unit 121 and the inversion control output module 13, and is configured to monitor a voltage boosting state of the voltage boosting conversion unit 122;
the voltage regulating unit 124 is electrically connected to the power protection unit 121 for preventing reverse connection of the power.
The boost conversion unit 122 includes a boost converter 1221 and a boost transistor Q5, an input end of the boost converter 1221 is electrically connected to the power protection unit 121, an output end of the boost converter 1221 is electrically connected to a control end of the boost transistor Q5, a first end of the boost transistor Q5 is electrically connected to the power protection unit 121, and a second end of the boost transistor Q5 is grounded; a first end of the voltage monitoring unit 123 is electrically connected with the power protection unit 121, and a second end of the voltage monitoring unit 123 is electrically connected with the inverter control output module 13; the voltage regulating unit 124 includes a voltage regulator 1241 and a voltage regulating diode D1, the anode of the voltage regulating diode D1 is electrically connected to the power protection unit 121, and the cathode of the voltage regulating diode D1 is electrically connected to the voltage regulator 1241. For example, fig. 4 is a schematic structural diagram of a boost converter according to an embodiment of the present invention, as shown in fig. 4, a model LM5022 can be adopted as the boost converter 1221, a direct current VIN input by an external vehicle power supply is boosted by the boost converter 1221 and a transformer L1, and a boosted direct current voltage V0 is output to an inverter control output module.
Fig. 5 is a schematic structural diagram of an inverter conversion output module in a dimming controller according to an embodiment of the present invention, and as shown in fig. 5, optionally, the inverter control output module 13 includes: the energy storage unit 131, the logic control unit 132, the first inverter switch IN1, the second inverter switch IN2, the first inverter circuit unit 133, the second inverter circuit unit 134 and the protection monitoring unit 135;
the energy storage unit 131 is electrically connected with the boost module and the logic control unit 132, and is configured to provide a dc voltage output by the boost module;
the logic control unit 132 is configured to control on/off of the first inverter circuit unit 133 and the second inverter circuit unit 134;
the micro control unit is electrically connected with the logic control unit 132 through a first inversion switch IN1 and a second inversion switch IN2, and the first inversion switch IN1 and the second inversion switch IN2 are used for transmitting pulse width modulation signals sent by the micro control unit;
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 configured to convert a dc voltage input by the boost module into a corresponding ac voltage;
the protection monitoring unit 135 is electrically connected to the logic control unit 132, and is configured to protect the inverter control output circuit in the inverter control output module 13.
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 terminal of the first gate driver 1331 is electrically connected to a first output terminal of the logic control unit 132, a second input terminal of the first gate driver 1331 is electrically connected to the boost module, a first output terminal of the first gate driver 1331 is electrically connected to a control terminal of the first transistor Q1, a first terminal of the first transistor Q1 is electrically connected to the energy storage unit 131, a second terminal of the first transistor Q1 is electrically connected to a first terminal of the second transistor Q2, a second terminal of the second transistor Q2 is grounded, and a second output terminal of the first gate driver 1331 is electrically connected to a control terminal of the second transistor Q2;
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, a first input terminal of the second gate driver 1341 is electrically connected to the second output terminal of the logic control unit 132, a second input terminal of the second gate driver 1341 is electrically connected to the boost module, a first output terminal of the second gate driver 1341 is electrically connected to the control terminal of the third transistor Q3, a first terminal of the third transistor Q3 is electrically connected to the energy storage unit 131, a second terminal of the third transistor Q3 is electrically connected to the first terminal of the fourth transistor Q4, a second terminal of the fourth transistor is grounded, and a second output terminal of the second gate driver 1341 is electrically connected to the control terminal of the fourth transistor; the energy storage unit 131 is electrically connected with the logic control unit 132. In addition, the protection monitoring unit 135 includes a current monitoring unit 1351, a temperature detecting unit 1352 and a voltage detecting unit 1353, and the current monitoring unit 1351 monitors the magnitude of the current in the inverter control output module 13 to prevent the current from being overloaded; the temperature in the inversion control output module 13 is monitored through the temperature detection unit 1352, so that overhigh temperature is prevented; the voltage detection unit 1353 monitors the voltage in the inverter control output module 13 to prevent voltage overload; the safety performance of the whole system is improved.
The direct-current voltage boosted by the boosting module is transmitted through the energy storage unit 131, power is supplied to the inversion control output module 13, the logic on-off of the first inversion circuit unit 133 and the second inversion circuit unit 134 is controlled through the logic control unit 132, the conversion from the direct current to the alternating current is realized, meanwhile, the pulse width modulation signals of the micro control unit are transmitted through the first inversion switch IN1 and the second inversion switch IN2, the logic on-off of the first inversion circuit unit 133 and the second inversion circuit unit 134 is adjusted through the logic control unit 132, and therefore the purpose of changing the output alternating-current voltage of the inversion control output module 13 is achieved simply and conveniently. Through electric control circuit, realize the conversion of direct current to the alternating current, the circuit is simple, and whole automatic realization improves conversion efficiency, utilizes little the control unit to change the voltage value of output alternating current, and convenience of customers changes skylight glass's transmittance at any time, and is convenient high-efficient.
With continued reference to fig. 3, as shown in fig. 3, optionally, the dimming controller further comprises: a load protection module 14;
the load protection module 14 is electrically connected with the micro control unit 11 and the inversion control output module 13, and is used for protecting a load circuit.
Through the load protection module 14, the damage of the load caused by circuit problems such as overload, missing and short circuit is prevented, the safety performance of the system is improved, and the application safety of a user is guaranteed.
Optionally, the dimming controller further comprises: a filtering module 15;
the filtering module 15 is electrically connected with the inversion control output module 13 and is used for stabilizing the output circuit.
Illustratively, LC low-pass filtering may be adopted, and 20KHz carrier waves are filtered through the LC low-pass filtering, so as to improve the stability of the ac voltage output, fig. 6 is a schematic diagram of a filtered ac waveform provided by an embodiment of the present invention, as shown in fig. 6, the sinusoidal image is an ac waveform diagram output after the LC low-pass filtering, and the effective value of the ac waveform is 36V, and the frequency of the ac waveform is 50 Hz. Through the filtering module 15, the alternating voltage output by the inversion control output module 13 is filtered, the stability of the alternating voltage is improved, and the precision of regulating and controlling the skylight glass is enhanced.
Fig. 7 is a schematic structural diagram of an automobile sunroof control system according to an embodiment of the present invention, and as shown in fig. 7, the automobile sunroof control system includes:
an external automobile controller 2, a connector 3, an automobile skylight 4 and the dimming controller 1;
the connector 3 comprises a circuit substrate (not shown in the figure), and an automobile power supply 31 and a local area internet bus interface 33 which are positioned on the circuit substrate, wherein the automobile power supply 31 is used for supplying power to the micro control unit 11 and the boosting module 12, and the local area internet bus interface 33 is used for realizing the communication between the local area internet bus transceiver module 10 and the external automobile controller 2;
the external automobile controller 2 is electrically connected with the connector 3 and is used for sending an automobile skylight light transmittance control instruction control signal;
the connector 3 is also electrically connected with the dimming controller 1 and is used for transmitting a control signal of the light transmittance control instruction of the automobile skylight to the dimming controller 1;
the dimming controller 1 is electrically connected to the sunroof 4 for adjusting the voltage of the sunroof.
The external automobile controller 2 may be a Body Control Module (BCM), the external automobile controller 2 sends an automobile skylight light transmittance control instruction to the dimming controller 1 through the local area internet bus interface 33, accuracy and stability of the instruction sending are improved, the automobile power supply 31 in the connector 3 provides a power supply voltage to the dimming controller 1, illustratively, the automobile power supply 31 provides 12V dc voltage to supply power to the dimming controller 1, and the 12V dc voltage is converted into 51V ac voltage through the dimming controller 1. The advantageous effects of the dimming controller 1 are the same as those described above, and are not described in detail here.
Optionally, the connector 3 further comprises a digital and analog switch 32;
the digital and analog switch 32 is electrically connected to the light controller 1, and is configured to generate and transmit a first sunroof light transmittance control command according to a user operation.
Digital and analog switch 32 can be rotary switch, with the control port 111 electric connection among the little the control unit 11, through digital and analog switch 32, the user can directly adjust rotary switch, through the first car skylight luminousness control command control contravariant control output module 13 that rotary switch produced output voltage to adjust skylight glass's transmittance, richen the mode of skylight glass's transmittance regulation, improve user experience and feel. For example, table 1 shows the correspondence between the output voltage of the inverter control output module and the transparency of the sunroof glass, and as shown in table 1, the digital and analog switch 32 is divided into ten shift positions, and the transparency of the sunroof glass corresponding to each shift position is controlled with an accuracy of about 10%. When the digital and analog switch 32 is operated by the user to be in the 1-gear position, the effective voltage value of the output voltage is 0V, and the transmittance of the corresponding skylight glass is 61.7%, and when the digital and analog switch 32 is operated by the user to be in the 10-gear position, the effective voltage value of the output voltage is 36V, and the transmittance of the corresponding skylight glass is 79.6%, so that the skylight glass is nearly completely transparent. In addition, for example, 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 sunroof transmittance Control command or receives the sleep command, until the sunroof transmittance Control command wakes up the dimming controller, so as to save the electric energy of the dimming controller.
TABLE 1 corresponding relationship between output voltage of inverter control output module and transparency of skylight glass
| 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 |
Optionally, the sunroof control system further includes a photosensor 5, and the photosensor 5 is electrically connected to the external vehicle controller 2, and is configured to generate and transmit a second sunroof light transmittance control command according to ambient light.
The photosensitive sensor 5 can automatically capture the illumination intensity of the surrounding environment of the automobile, the photosensitive sensor 5 captures illumination intensity information, and a corresponding second automobile skylight light transmittance control instruction is sent out through the logical operation of the external automobile controller 2, so that the light transmittance of the skylight glass is automatically controlled. Exemplarily, when the sun irradiation intensity is high in summer, the photosensitive sensor 5 captures the illumination intensity, the external automobile controller 2 performs logical operation to draw a conclusion that the illumination intensity is too high, a second automobile skylight light transmittance control instruction is automatically generated, the second automobile skylight light transmittance control instruction is transmitted to the dimming controller 1 through the local area internet bus interface 33 of the connector 3, the dimming controller 1 is used for reducing the voltage value of the output alternating current, so that the transmittance of the automobile skylight 4 is reduced, the strong external illumination is shielded for a user, the user is prevented from being strongly stimulated by the illumination, the influence of the stimulation of the illumination on a driver is reduced, and the riding experience of the passenger is improved. For another example, after the light intensity is captured by the photosensitive sensor 5 and transmitted to the external vehicle controller 2, the external vehicle controller 2 automatically generates a second vehicle skylight light transmittance control instruction through a conclusion that the light intensity is too low through logic operation, and transmits the second vehicle skylight light transmittance control instruction to the dimming controller 1 through the local area internet bus interface 33 of the connector 3, and the dimming controller 1 is used for improving the voltage value of the output alternating current, so that the light transmittance of the vehicle skylight 4 is improved, the light intensity in the vehicle is enhanced, and a comfortable riding environment is created for a user. Utilize photosensitive sensor 5 to strengthen skylight glass transmittance's intellectuality, promoted skylight glass's adaptability to need not user operation, adopt the mode of auto-induction, adapt to the illumination environment of various differences at any time, it is simple convenient, promote user's experience and feel.
In addition, the embodiment of the invention also provides an automobile, which comprises the automobile skylight control system.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious modifications, rearrangements, combinations and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
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| CN111208657B (en) | 2025-04-01 |
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