An intelligent control device for vehicle vision and its control method

Abstract

The present invention relates to the field of automotive intelligent control technology, and specifically relates to an intelligent control device for automotive vision and its control method; it includes a main control module, high beam lights, low beam lights, a photosensitive probe, and a light valve liquid crystal sunshade. The photosensitive probe includes a light-shielding housing and a photosensitive diode. A light-shielding hole penetrating the interior is provided at the front end of the light-shielding housing, and the photosensitive diode is arranged inside the light-shielding housing and the photosensitive diode faces the light-shielding hole; the high beam lights, low beam lights, photosensitive diode, and light valve liquid crystal sunshade are all electrically connected to the main control module; it can realize intelligent control of the high beam lights, low beam lights, and light valve liquid crystal sunshade, reduce frequent manual operations, and the design of the light-shielding housing can improve the accuracy of the photosensitive diode in collecting the light intensity in front of the vehicle; specifically, it adopts the structure of the light-shielding hole, and the light irradiated from the side will be blocked by the light-shielding hole, so that the light collected by the photosensitive diode installed in the light-shielding hole is the light from the oncoming vehicle in front.

Description

Technical Field

[0001] The present invention relates to the technical field of intelligent vehicle control, and particularly to an intelligent control device for vehicle vision and a control method thereof. Background Art

[0002] With the continuous progress and development of technology, intelligent vehicle technology has gradually matured. An intelligent vehicle is a comprehensive system integrating functions such as environmental perception, planning and decision-making, and multi-level assisted driving. It comprehensively applies technologies such as computers, modern sensors, information fusion, communication, artificial intelligence, and automatic control, and is a typical high-tech complex. Currently, the research on intelligent vehicles mainly focuses on improving the safety and comfort of vehicles, as well as providing an excellent human-vehicle interaction interface. In recent years, intelligent vehicles have become a research hotspot in the field of vehicle engineering in the world and a new driving force for the growth of the automotive industry. Many developed countries have incorporated them into their respective key-developed intelligent transportation systems;

[0003] Currently, when driving at night, the use of high and low beam headlights needs to comply with the regulations issued by the state. When the vehicle is driving on a normal road, if there is a vehicle approaching from a distance, the high beam headlights need to be turned off. When the vehicle suddenly drives into a dark environment, in order to increase the field of vision distance, the high beam headlights need to be turned on to see the road ahead clearly. When an oncoming vehicle appears from a relatively close position, such as in a turning section, the high beam headlights need to be turned off; when driving during the day, there will be a situation where the light is too strong and stimulates the driver's eyes. The prior art uses a sunshade board to solve this problem. For the convenience of use and to get rid of manual operation, the prior art has designed a liquid crystal glass sunshade board that can automatically control the light transmittance of the liquid crystal glass according to the intensity of the light, achieving the effect of intelligent control;

[0004] In summary, when driving, the driver needs to adjust the driving vision according to different environments to ensure driving safety. Adjusting the driving vision relies on frequent manual operations, which are prone to safety hazards in some emergency situations. Therefore, it is necessary to design an intelligent control system for driving vision. Summary of the Invention

[0005] In order to overcome the above deficiencies, the present invention aims to provide a technical solution that can solve the above problems. To achieve the above purpose, the present invention provides the following technical solution: An intelligent control device for vehicle vision includes a main control module, high beam headlights, low beam headlights, a photosensitive probe, and a light valve liquid crystal sunshade board. The photosensitive probe includes a light-shielding housing and a photosensitive diode. A light-shielding hole penetrating the interior is provided at the front end of the light-shielding housing. The photosensitive diode is arranged inside the light-shielding housing and the photosensitive diode faces the light-shielding hole; the high beam headlights, low beam headlights, photosensitive diode, and light valve liquid crystal sunshade board are all electrically connected to the main control module.

[0006] Preferably, the light-shielding housing includes a fixing plate, a rotating shaft support plate respectively arranged on both sides of the fixing plate, and a light-shielding sleeve rotatably connected between the two rotating shaft support plates. A sticking layer is arranged at the bottom of the fixing plate. The light-shielding hole is arranged on the front side of the light-shielding sleeve. A wire passing port is arranged on the rear side of the light-shielding sleeve. The photosensitive diode is installed inside the light-shielding sleeve.

[0007] Preferably, threaded holes are respectively arranged inside both ends of the light-shielding sleeve. The two ends of the light-shielding sleeve are connected with rotating shaft covers through the threaded holes, and the rotating shaft covers are rotatably connected with the rotating shaft support plates.

[0008] Preferably, a thickening strip is arranged on the inner wall of the light-shielding sleeve. The light-shielding hole penetrates through the thickening strip. A positioning part is arranged at the opening position of the thickening strip corresponding to the light-shielding hole. The photosensitive diode is fixedly installed at the opening position of the thickening strip corresponding to the light-shielding hole through the positioning part.

[0009] Preferably, friction lines are arranged on the outer wall of the light-shielding sleeve.

[0010] Preferably, the main control module includes a single-chip microcomputer U1, an electronic switch K1, an electronic switch K2, a resistor R1, a resistor R2, a resistor R3, a capacitor C1, a capacitor C2 and a power-on indicator D1. Among them, the single-chip microcomputer U1 uses the model PIC12F675. The 3rd pin of the single-chip microcomputer U1 controls the on-off of the high beam switch by controlling the on-off of the electronic switch K1. The 5th pin of the single-chip microcomputer U1 controls the on-off of the low beam switch by controlling the on-off of the electronic switch K2. The power supply voltage is connected to the 1st pin of the single-chip microcomputer U1 after being filtered by the capacitor C1. The power supply voltage is connected to the positive pole of the photosensitive diode after being filtered by the capacitor C2. The negative pole of the photosensitive diode is grounded after being voltage-divided by the resistor R3. The negative pole of the photosensitive diode is connected to the 6th pin of the single-chip microcomputer U1 after being current-limited by the resistor R2. The positive pole of the power-on indicator D1 is connected to the 8th pin of the single-chip microcomputer U1. The negative pole of the power-on indicator D1 is grounded after being current-limited by the resistor R1.

[0011] A control method for an intelligent vehicle vision control device includes the above-mentioned intelligent vehicle vision control device, and includes the following steps:

[0012] Step 1, install a low beam, a high beam, a photosensitive probe, a light valve liquid crystal glass and a main control module in the vehicle. The low beam, the high beam, the photosensitive probe and the light valve liquid crystal glass are respectively electrically connected to the main control module, and the vehicle interior power supply provides a power supply voltage for the circuit part.

[0013] Step 2, according to the light intensity, set a high beam interval T1, a low beam interval T2 and a light-shielding interval T3 in the single-chip microcomputer U1 of the main control module, and set a high beam off buffer interval Ta and a high beam on buffer interval Tb in the high beam interval T1.

[0014] Step 3, according to the interval, set a variable calculation formula in the single-chip microcomputer U1:

[0015] 1) According to the high beam interval T1, set the variable value Va, variable value Vb, count value Ca, and count value Cb in the single-chip microcomputer U1, and also set a unit time period; within the unit time period, when the single-chip microcomputer U1 collects the light intensity in front of the vehicle through the photosensitive probe within Ta, perform a periodic cyclic addition calculation on the variable value Va according to the count value Ca, and the calculation formula is: Va = Va + Ca; when the single-chip microcomputer U1 collects the light intensity in front of the vehicle through the photosensitive probe within Tb, perform a periodic cyclic addition calculation on the variable value Vb according to the count value Cb, and the calculation formula is: Vb = Vb + Cb; where the unit time period is N times the addition calculation period.

[0016] 2) According to the low beam interval T2, set the variable value V2 and count value C2 in the single-chip microcomputer U1. When the photosensitive probe collects the light intensity in front of the vehicle within T2, perform a periodic cyclic addition calculation on the variable value V2 according to the count value C2, and the calculation formula is: V2 = V2 + C2;

[0017] 3) According to the shading interval T3, set the variable value V3 and count value C3 in the single-chip microcomputer U1. When the photosensitive probe collects the light intensity in front of the vehicle within T3, perform a periodic cyclic addition calculation on the variable value V3 according to the count value C3, and the calculation formula is: V3 = V3 + C3;

[0018] Step 4, judge the variables, preset the high beam turn-on drive value M1, high beam turn-off drive value M2, low beam drive value M3, low beam buffer value M4, shading drive value M5, and shading buffer value M6, where M3 < M4, M6 < M5; when Va is greater than or equal to M1 within the unit time period, the single-chip microcomputer U1 controls the high beam to turn on, and when Vb is greater than or equal to M2 within the unit time period, the single-chip microcomputer U1 controls the high beam to turn off; when V2 is greater than or equal to M3, the single-chip microcomputer U1 controls the low beam to turn on, and when V2 is less than M4, the single-chip microcomputer U1 controls the low beam to turn off; when V3 is greater than or equal to M5, the single-chip microcomputer U1 controls the light valve liquid crystal glass to be in the shading state, and when V3 is less than M6, the single-chip microcomputer U1 controls the light valve liquid crystal glass to be in the light-transmitting state.

[0019] Preferably, thresholds u, v, and w are set within the far - light - off buffer period Ta, and u < v < w. Count values Cu, Cv, and Cw are set for the count value Ca according to the thresholds within the far - light - off buffer period Ta, and Cu < Cv < Cw. When the microcontroller U1 collects through the photosensitive probe that the light intensity in front of the vehicle is greater than or equal to u and less than v, Ca is equal to Cu. When the microcontroller U1 collects through the photosensitive probe that the light intensity in front of the vehicle is greater than or equal to v and less than w, Ca is equal to Cv. When the microcontroller U1 collects through the photosensitive probe that the light intensity in front of the vehicle is greater than or equal to w, Ca is equal to Cw. Thresholds x, y, and z are set within the far - light - on buffer period Tb, and u > x > y > z. Count values Cx, Cy, and Cz are set for the count value Cb according to the thresholds within the far - light - on buffer period Tb, and Cx < Cy < Cz. When the microcontroller U1 collects through the photosensitive probe that the light intensity in front of the vehicle is less than or equal to x and greater than y, Ca is equal to Cx. When the microcontroller U1 collects through the photosensitive probe that the light intensity in front of the vehicle is less than or equal to y and greater than z, Ca is equal to Cy. When the microcontroller U1 collects through the photosensitive probe that the light intensity in front of the vehicle is less than or equal to z, Ca is equal to Cz.

[0020] Preferably, a low - light buffer time period is set in the microcontroller U1. When V2 is less than M4, the microcontroller U1 starts timing for the low - light buffer time period. During the low - light buffer time period, if V2 continuously remains less than M4, the microcontroller U1 controls the low - beam lights to turn off. If it is collected that V2 is greater than or equal to M4, the microcontroller U1 restarts timing for the low - light buffer time period.

[0021] Preferably, a light - shielding buffer time period is set in the microcontroller U1. When V3 is less than M6, the microcontroller U1 starts timing for the light - shielding buffer time period. During the light - shielding buffer time period, if V3 continuously remains less than M6, the microcontroller U1 controls the light - valve liquid crystal glass to be in a light - transmitting state. If it is collected that V3 is greater than or equal to M6, the microcontroller U1 restarts timing for the light - shielding buffer time period.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0023] 1) It can achieve intelligent control of high - and low - beam lights and the light - valve liquid crystal sunshade, reducing frequent manual operations. And the design of the light - shielding housing can improve the accuracy of the photosensitive diode in collecting the light intensity in front of the vehicle. Specifically, the structure of light - shielding holes is adopted, and the light rays irradiated from the side will be blocked by the light - shielding holes, so that the light rays collected by the photosensitive diode installed in the light - shielding holes are the light rays from oncoming vehicles.

[0024] 2) The control of the high and low beam lights is based on the value of the light intensity within a unit time to control the opening and closing of the high beam light, low beam light, and the light valve liquid crystal sunshade; when the vehicle is driving on a normal road and a vehicle approaches from a distance, after the automatic high beam light system detects it, if the oncoming vehicle direction does not change after the variable value Vb is greater than or equal to the high beam light drive value M2 within a unit time period, the system will control the vehicle's high beam light to turn off; when the vehicle suddenly drives into a dark environment, such as entering a road without lighting, after the system detects that it has entered a dark environment, it will instantly turn on the low beam light. If it remains in a dark environment after the variable value Va is greater than or equal to the high beam light turn-on drive value M1 within a unit time period, the high beam light will also automatically turn on; when the oncoming vehicle appears from a relatively close position and the detected light intensity is relatively bright, the detection count value will be accelerated, causing the high beam light to turn off in advance; enabling the vehicle to accurately judge the light intensity in front of the vehicle during driving and adjust the driving vision according to different light intensities, thereby effectively ensuring driving safety;

[0025] 3) To prevent the high beam light from constantly changing due to the change of the oncoming vehicle's light source, a buffer stage between the threshold value x and the threshold value u is set for the high beam light; according to the speed of setting the count value under different thresholds, when the light is within the high beam interval T1, the high beam light can be quickly turned on in a darker situation and quickly turned off in a brighter situation; similarly, for the low beam light and the light valve liquid crystal glass, a near light buffer time period and a light-shielding buffer time period are respectively set, so that the low beam light will not turn off immediately after it is turned on, and the light valve liquid crystal glass will not immediately switch to the light-transmitting state after entering the light-shielding state. Description of the Drawings

[0026] Figure 1 is a schematic structural diagram of the photosensitive probe in the present invention;

[0027] Figure 2 is an exploded view of the structure of the light-shielding housing in the present invention;

[0028] Figure 3 is a schematic cross-sectional structure diagram of the light-shielding sleeve in the present invention;

[0029] Figure 4 is a schematic structural diagram of the light valve liquid crystal sunshade and the photosensitive probe in the present invention;

[0030] Figure 5 is a block diagram of the module connection of the circuit part in the present invention;

[0031] Figure 6 is a schematic circuit connection diagram of the present invention;

[0032] Figure 7 is a general idea diagram of the system in the present invention.

[0033] The reference numerals and names in the drawings are as follows:

[0034] 10--Main control module, 20--High beam, 30--Low beam, 40--Photosensitive probe, 50--Light valve liquid crystal sun visor, 41--Shading shell, 42--Photosensitive diode, 410--Friction pattern, 411--Shading hole, 412--Fixed plate, 413--Shaft support plate, 414--Shading sleeve, 415--Wire passing port, 416--Threaded hole, 417--Shaft cover, 418--Thickening strip, 419--Location piece. DETAILED DESCRIPTION

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0036] See also Figure 2-6 In an embodiment of the present invention, an intelligent control device for automobile vision includes a main control module 10, a high beam 20, a low beam 30, a photosensitive probe 40, and a light valve liquid crystal sun visor 50, wherein the photosensitive probe 40 is provided with a light shielding shell 41 and a photosensitive diode 42, a light shielding hole 411 penetrating the interior is provided at the front end of the light shielding shell 41, the photosensitive diode 42 is provided inside the light shielding shell 41, and the photosensitive diode 42 faces the light shielding hole 411; the high beam 20, the low beam 30, the photosensitive diode 42, and the light valve liquid crystal sun visor 50 are all electrically connected to the main control module 10; the photosensitive probe 40 is installed It is installed in front of the windshield in front of the vehicle, or the photosensitive probe 40 is installed in front of the light valve liquid crystal sun visor 50, so that the photosensitive diode 42 can only detect the light intensity in front of the vehicle, and then the light intensity collected by the photosensitive diode 42 is received by the main control module 10, and the high beam 20, the low beam 30 and the light valve liquid crystal sun visor 50 are controlled according to the light intensity. Through this design, intelligent control of the high and low beam 30 and the light valve liquid crystal sun visor 50 can be achieved, reducing frequent manual operations, and the design of the light-shielding shell 41 can improve the accuracy of the photosensitive diode 42 in collecting the light intensity in front of the vehicle.

[0037] Further Figure 2As shown in the figure, the light-shielding housing 41 includes a fixing plate 412, a rotating shaft support plate 413 respectively arranged on both sides of the fixing plate 412, and a light-shielding sleeve 414 rotatably connected between the two rotating shaft support plates 413. A sticking layer (not shown in the figure) is arranged at the bottom of the fixing plate 412. A light-shielding hole 411 is arranged on the front side of the light-shielding sleeve 414. A wire passing port 415 is arranged on the rear side of the light-shielding sleeve 414. The photosensitive diode 42 is installed inside the light-shielding sleeve 414. Threaded holes 416 are respectively arranged inside both ends of the light-shielding sleeve 414. The two ends of the light-shielding sleeve 414 are connected with rotating shaft covers 417 through the threaded holes 416. The rotating shaft covers 417 are rotatably connected with the rotating shaft support plates 413, and the angle of the photosensitive diode 42 can be finely adjusted.

[0038] Further, as Figure 2-3 shown in the figure, a thickening strip 418 is arranged on the inner wall of the light-shielding sleeve 414. The light-shielding hole 411 penetrates through the thickening strip 418, so that the light-shielding hole 411 has sufficient length to ensure that the light intensity collected by the photosensitive diode 42 is the light intensity directly in front of the vehicle. A positioning member 419 is arranged at the opening position of the light-shielding hole 411 corresponding to the thickening strip 418. The photosensitive diode 42 is fixedly installed at the opening position of the light-shielding hole 411 corresponding to the thickening strip 418 through the positioning member 419, realizing the firm positioning of the photosensitive diode 42. Friction lines 410 are arranged on the outer wall of the light-shielding sleeve 414, which is convenient for flipping and adjusting the light-shielding sleeve 414.

[0039] Further, as Figure 5 shown in the figure, the main control module 10 includes a single-chip microcomputer U1, an electronic switch K1, an electronic switch K2, a resistor R1, a resistor R2, a resistor R3, a capacitor C1, a capacitor C2 and a power-on indicator D1. Among them, the single-chip microcomputer U1 uses the model PIC12F675. The 3rd pin of the single-chip microcomputer U1 controls the on / off of the high beam lamp 20 by controlling the on / off of the electronic switch K1. The 5th pin of the single-chip microcomputer U1 controls the on / off of the low beam lamp 30 by controlling the on / off of the electronic switch K2. The power supply voltage is filtered by the capacitor C1 and then connected to the 1st pin of the single-chip microcomputer U1. The power supply voltage is filtered by the capacitor C2 and then connected to the positive pole of the photosensitive diode 42. The negative pole of the photosensitive diode 42 is grounded after voltage division by the resistor R3. The negative pole of the photosensitive diode 42 is connected to the 6th pin of the single-chip microcomputer U1 after current limiting by the resistor R2. The positive pole of the power-on indicator D1 is connected to the 8th pin of the single-chip microcomputer U1. The negative pole of the power-on indicator D1 is grounded after current limiting by the resistor R1. Through the above circuit design, the purpose of converting the light change into a voltage change is achieved. The actual reaction distance is about one hundred and fifty meters (that is, it can be detected when a vehicle with its lights on is approaching from one hundred and fifty meters away). Among them, the voltage change circuit is composed of the photosensitive diode 42 and the resistor R3. The photosensitive diode 42 changes the resistor R3 with the change of light intensity, so that the voltage divided by the resistor R3 is different: What the single-chip microcomputer U1 detects is the voltage value of the resistor R3.

[0040] Please refer to Figure 5-7 In the embodiment of the present invention, a control method for an intelligent vehicle vision control device includes the above-mentioned intelligent vehicle vision control device, and the steps are as follows:

[0041] Step 1, install a low beam lamp 30, a high beam lamp 20, a photosensitive probe 40, a light valve liquid crystal glass and a main control module 10 in the vehicle. The low beam lamp 30, the high beam lamp 20, the photosensitive probe 40 and the light valve liquid crystal glass are respectively electrically connected to the main control module 10, and the vehicle power supply provides a supply voltage for the circuit part;

[0042] Step 2, according to the light intensity, set a high beam interval T1, a low beam interval T2 and a light shielding interval T3 in the single-chip microcomputer U1 of the main control module 10, and set a high beam lamp off buffer interval Ta and a high beam lamp on buffer interval Tb in the high beam interval T1;

[0043] Step 3, according to the interval, set a variable calculation formula in the single-chip microcomputer U1:

[0044] 1) According to the high beam interval T1, set variable values Va, Vb, count values Ca and Cb in the single-chip microcomputer U1, and set a unit time period; within the unit time period, when the single-chip microcomputer U1 collects the light intensity in front of the vehicle through the photosensitive probe 40 within Ta, perform a periodic cyclic addition calculation on the variable value Va according to the count value Ca, and the calculation formula is: Va = Va + Ca; when the single-chip microcomputer U1 collects the light intensity in front of the vehicle through the photosensitive probe 40 within Tb, perform a periodic cyclic addition calculation on the variable value Vb according to the count value Cb, and the calculation formula is: Vb = Vb + Cb; where the unit time period is N times the addition calculation cycle;

[0045] 2) According to the low beam interval T2, set a variable value V2 and a count value C2 in the single-chip microcomputer U1. When the photosensitive probe 40 collects the light intensity in front of the vehicle within T2, perform a periodic cyclic addition calculation on the variable value V2 according to the count value C2, and the calculation formula is: V2 = V2 + C2;

[0046] 3) According to the light shielding interval T3, set a variable value V3 and a count value C3 in the single-chip microcomputer U1. When the photosensitive probe 40 collects the light intensity in front of the vehicle within T3, perform a periodic cyclic addition calculation on the variable value V3 according to the count value C3, and the calculation formula is: V3 = V3 + C3;

[0047] Step 4: Determine variables and preset the high-beam turn-on drive value M1, high-beam turn-off drive value M2, low-beam drive value M3, low-beam buffer value M4, light-shielding drive value M5, and light-shielding buffer value M6, where M3 < M4 and M6 < M5. When Va is greater than or equal to M1 within a unit time period, the microcontroller U1 controls the high-beam lamp 20 to turn on. When Vb is greater than or equal to M2 within a unit time period, the microcontroller U1 controls the high-beam lamp 20 to turn off. When V2 is greater than or equal to M3, the microcontroller U1 controls the low-beam lamp 30 to turn on. When V2 is less than M4, the microcontroller U1 controls the low-beam lamp 30 to turn off. When V3 is greater than or equal to M5, the microcontroller U1 controls the light-valve liquid crystal glass to be in the light-shielding state. When V3 is less than M6, the microcontroller U1 controls the light-valve liquid crystal glass to be in the light-transmitting state.

[0048] Further, thresholds u, v, and w are set within the high-beam turn-off buffer interval Ta, and u < v < w. The count value Ca is set to Cu, Cv, and Cw according to the thresholds within the high-beam turn-off buffer interval Ta, and Cu < Cv < Cw. When the microcontroller U1 collects the light intensity in front of the vehicle through the photosensitive probe 40 and it is greater than or equal to u and less than v, Ca is equal to Cu. When the microcontroller U1 collects the light intensity in front of the vehicle through the photosensitive probe 40 and it is greater than or equal to v and less than w, Ca is equal to Cv. When the microcontroller U1 collects the light intensity in front of the vehicle through the photosensitive probe 40 and it is greater than or equal to w, Ca is equal to Cw. Thresholds x, y, and z are set within the high-beam turn-on buffer interval Tb, and u > x > y > z. The count value Cb is set to Cx, Cy, and Cz according to the thresholds within the high-beam turn-on buffer interval Tb, and Cx < Cy < Cz. When the microcontroller U1 collects the light intensity in front of the vehicle through the photosensitive probe 40 and it is less than or equal to x and greater than y, Ca is equal to Cx. When the microcontroller U1 collects the light intensity in front of the vehicle through the photosensitive probe 40 and it is less than or equal to y and greater than z, Ca is equal to Cy. When the microcontroller U1 collects the light intensity in front of the vehicle through the photosensitive probe 40 and it is less than or equal to z, Ca is equal to Cz.

[0049] Further, a low-beam buffer time period is set in the microcontroller U1. When V2 is less than M4, the microcontroller U1 starts timing the low-beam buffer time period. During the low-beam buffer time period, if V2 continuously remains less than M4, the microcontroller U1 controls the low-beam lamp 30 to turn off. If it is collected that V2 is greater than or equal to M4, the microcontroller U1 restarts timing the low-beam buffer time period.

[0050] Further, a light-shielding buffer time period is set in the single-chip microcomputer U1. When V3 is less than M6, the single-chip microcomputer U1 starts timing the light-shielding buffer time period. During the light-shielding buffer time period, if V3 continuously remains less than M6, the single-chip microcomputer U1 controls the light valve liquid crystal glass to be in a light-transmitting state. If it is collected that V3 is greater than or equal to M6, the single-chip microcomputer U1 re-enters the timing of the light-shielding buffer time period.

[0051] In the above technical solution, by setting the high-beam interval T1, the low-beam interval T2, and the light-shielding interval T3, the three intervals are defined according to the light intensity collected by the photosensitive diode 42. Then variable values and count values are respectively set within the three intervals. Further, the high-beam on driving value M1, the high-beam off driving value M2, the low-beam driving value M3, the low-beam buffer value M4, the light-shielding driving value M5, and the light-shielding buffer value M6 are set. When the light intensity collected by the photosensitive diode 42 falls into a certain interval, the variable value within this interval starts to perform a periodic cyclic addition calculation through the count value. When the variable value reaches the corresponding driving value, it will control the corresponding device (the high-beam lamp 20, the low-beam lamp 30, the light valve liquid crystal sunshade 50).

[0052] For the high-beam lamp 20, a high-beam off buffer interval Ta and a high-beam on buffer interval Tb are set. Different variable values and count values are set for the high-beam off buffer interval Ta and the high-beam on buffer interval Tb. And a unit time period is also set. Then the high-beam on driving value M1 and the high-beam off driving value M2 are set to judge the variable value. Through this program setting, the on time of the high-beam lamp 20 after entering a darker environment and the off time of the high-beam lamp 20 after leaving the darker environment are respectively controlled by judging Va and Vb, improving the accuracy of controlling the high-beam lamp 20. When the vehicle is driving on a normal road and the light in the distance is darker, after the automatic high-beam lamp 20 system detects it, if it is detected that Va is greater than or equal to M1 within the unit time period, the system will control the vehicle's high-beam lamp 20 to turn on. When a vehicle approaches from afar and the automatic high-beam lamp 20 system detects it, if the direction of the oncoming vehicle does not change within the unit time period, making Vb greater than or equal to M2, the system will control the vehicle's high-beam lamp 20 to turn off.

[0053] Also, by respectively setting multiple thresholds within the high-beam off buffer interval Ta and the high-beam on buffer interval Tb and setting multiple count values for the thresholds, the system can control the speed of change of the variable value according to the detected light intensity. When the oncoming vehicle appears from a relatively close position and the detected light intensity is relatively bright, the system will speed up the detection count value, causing the high-beam lamp 20 to turn off in advance. Similarly, when suddenly driving into a dark environment, such as driving on a road without light illumination, and the detected light is relatively dark, the system will speed up the detection count value, causing the high-beam lamp 20 to turn on in advance.

[0054] Since z < y < x < u < v < w, when the light intensity falls between the threshold value x and the threshold value u, no addition calculation is performed on the variable value Va and the variable value Vb. At this time, the high beam 20 remains in the current state (on or off), and the count values Ca and Cb are cleared, so that the high beam 20 has a certain buffer area to prevent the high beam 20 from being frequently turned on and off, resulting in system instability. Similarly, for the low beam 30 and the light valve liquid crystal glass, a low beam buffer time period and a light shielding buffer time period are respectively set, so that the low beam 30 will not be immediately turned off after being turned on. To prevent the high beam 20 from constantly changing due to the change of the light source of the oncoming vehicle, the light valve liquid crystal glass will not immediately switch to the light-transmitting state after entering the light-shielding state, preventing the light valve liquid crystal glass from constantly changing when temporarily entering the sunlight shielding area.

[0055] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. An intelligent control device for vehicle vision, characterized in that, The system comprises a main control module, a high beam, a low beam, a photosensitive probe and a light valve liquid crystal sun visor. The photosensitive probe comprises a light-shielding housing and a photosensitive diode. A light-shielding hole is provided at the front end of the light-shielding housing. The photosensitive diode is provided inside the light-shielding housing and faces the light-shielding hole. The high beam, the low beam, the photosensitive diode and the light valve liquid crystal sun visor are all electrically connected to the main control module. The light-shielding shell includes a fixed plate, a rotating shaft support plate respectively arranged on both sides of the fixed plate, and a light-shielding sleeve rotatably connected between the two rotating shaft support plates. An adhesive layer is provided at the bottom of the fixed plate, the light-shielding hole is provided on the front side of the light-shielding sleeve, and a wire-passing port is provided on the rear side of the light-shielding sleeve. The photosensitive diode is installed inside the light-shielding sleeve.

2. The intelligent control device for vehicle vision according to claim 1, wherein, Threaded holes are respectively provided inside the two ends of the light-shielding sleeve. The two ends of the light-shielding sleeve are connected with rotating shaft covers through the threaded holes. The rotating shaft covers are rotatably connected to the rotating shaft support plate.

3. An intelligent control device for vehicle vision according to claim 1, characterized in that, The inner wall of the shading sleeve is provided with a thickening strip, the shading hole runs through the thickening strip, and a positioning piece is provided at the opening position of the shading hole corresponding to the thickening strip. The photosensitive diode is fixedly installed at the opening position of the shading hole corresponding to the thickening strip through the positioning piece.

4. An intelligent control device for vehicle vision according to claim 1, characterized in that, The outer wall of the light-shielding sleeve is provided with friction lines.

5. The intelligent vehicle vision control device according to any one of claims 1-4, characterized in that The main control module includes a single-chip microcomputer U1, an electronic switch K1, an electronic switch K2, a resistor R1, a resistor R2, a resistor R3, a capacitor C1, a capacitor C2 and a power-on indicator light D1. Among them, the single-chip microcomputer U1 adopts the model PIC12F675. The 3rd pin of the single-chip microcomputer U1 controls the high beam switch by controlling the on and off of the electronic switch K1, and the 5th pin of the single-chip microcomputer U1 controls the low beam switch by controlling the on and off of the electronic switch K2; the power supply voltage is filtered by the capacitor C1 and connected to the 1st pin of the single-chip microcomputer U1, the power supply voltage is filtered by the capacitor C2 and connected to the positive electrode of the photosensitive diode, the negative electrode of the photosensitive diode is divided by the resistor R3 and grounded, the negative electrode of the photosensitive diode is limited by the resistor R2 and connected to the 6th pin of the single-chip microcomputer U1, the positive electrode of the power-on indicator light D1 is connected to the 8th pin of the single-chip microcomputer U1, and the negative electrode of the power-on indicator light D1 is limited by the resistor R1 and grounded.

6. A control method for an intelligent vehicle vision control device, comprising the intelligent vehicle vision control device according to any one of claims 1-5, characterized in that, The steps include: Step 1: Install low beam lights, high beam lights, photosensitive probes, light valve liquid crystal glass, and a main control module in the vehicle. The low beam lights, high beam lights, photosensitive probes, and light valve liquid crystal glass are electrically connected to the main control module, and the power supply voltage for the circuit part is provided by the power supply in the vehicle. Step 2: According to the light intensity, the high beam interval T1, low beam interval T2 and light shielding interval T3 are set in the single chip microcomputer U1 of the main control module, and the high beam off buffer interval Ta and the high beam on buffer interval Tb are set within the high beam interval T1; Step 3, according to the interval, set the variable calculation formula in the microcontroller U1: According to the high-beam interval T1, variable values Va, Vb, count values Ca and Cb are set in the single-chip microcomputer U1, and a unit time period is also set. During the unit time period, when the single-chip microcomputer U1 collects the light intensity in front of the vehicle through the photosensitive probe within Ta, the variable value Va is calculated by adding in a periodic cycle according to the count value Ca, and the calculation formula is: Va = Va + Ca; when the single-chip microcomputer U1 collects the light intensity in front of the vehicle through the photosensitive probe within Tb, the variable value Vb is calculated by adding in a periodic cycle according to the count value Cb, and the calculation formula is: Vb = Vb + Cb; Among them, the unit time period is N times the addition calculation cycle; According to the low-beam interval T2, the variable value V2 and the count value C2 are set in the single-chip microcomputer U1. When the photosensitive probe collects the light intensity in front of the vehicle within T2, the variable value V2 is calculated by adding in a periodic cycle according to the count value C2, and the calculation formula is: V2 = V2 + C2; According to the shading interval T3, the variable value V3 and the count value C3 are set in the single-chip microcomputer U1. When the photosensitive probe collects the light intensity in front of the vehicle within T3, the variable value V3 is calculated by adding in a periodic cycle according to the count value C3, and the calculation formula is: V3 = V3 + C3; Step 4, judge variables, preset the high-beam turn-on drive value M1, high-beam turn-off drive value M2, low-beam drive value M3, low-beam buffer value M4, shading drive value M5, shading buffer value M6, where M3 < M4, M6 < M5; when Va is greater than or equal to M1 within the unit time period, the single-chip microcomputer U1 controls the high-beam lamp to turn on, and when Vb is greater than or equal to M2 within the unit time period, the single-chip microcomputer U1 controls the high-beam lamp to turn off; when V2 is greater than or equal to M3, the single-chip microcomputer U1 controls the low-beam lamp to turn on, and when V2 is less than M4, the single-chip microcomputer U1 controls the low-beam lamp to turn off; when V3 is greater than or equal to M5, the single-chip microcomputer U1 controls the light valve liquid crystal glass to be in the shading state, and when V3 is less than M6, the single-chip microcomputer U1 controls the light valve liquid crystal glass to be in the light-transmitting state.

7. The control method of an intelligent vehicle vision control device according to claim 6, characterized in that, There are thresholds u, v, and w set within the far - light - off buffer period Ta, and u < v < w. The count value Ca has Cu, Cv, and Cw set according to the thresholds within the far - light - off buffer period Ta, and Cu < Cv < Cw. When the microcontroller U1 collects the light intensity in front of the vehicle through the photosensitive probe and it is greater than or equal to u and less than v, Ca is equal to Cu. When the microcontroller U1 collects the light intensity in front of the vehicle through the photosensitive probe and it is greater than or equal to v and less than w, Ca is equal to Cv. When the microcontroller U1 collects the light intensity in front of the vehicle through the photosensitive probe and it is greater than or equal to w, Ca is equal to Cw. There are thresholds x, y, and z set within the far - light - on buffer period Tb, and u > x > y > z. The count value Cb has Cx, Cy, and Cz set according to the thresholds within the far - light - on buffer period Tb, and Cx < Cy < Cz. When the microcontroller U1 collects the light intensity in front of the vehicle through the photosensitive probe and it is less than or equal to x and greater than y, Ca is equal to Cx. When the microcontroller U1 collects the light intensity in front of the vehicle through the photosensitive probe and it is less than or equal to y and greater than z, Ca is equal to Cy. When the microcontroller U1 collects the light intensity in front of the vehicle through the photosensitive probe and it is less than or equal to z, Ca is equal to Cz.

8. The control method of an intelligent control device for vehicle vision according to claim 6, characterized in that A low - light buffer time period is set in the microcontroller U1. When V2 is less than M4, the microcontroller U1 starts timing for the low - light buffer time period. During the low - light buffer time period, if V2 continuously remains less than M4, the microcontroller U1 controls the low - beam lights to turn off. If it is collected that V2 is greater than or equal to M4, the microcontroller U1 restarts timing for the low - light buffer time period.

9. The control method of an intelligent control device for vehicle vision according to claim 6, characterized in that, A light - shielding buffer time period is set in the microcontroller U1. When V3 is less than M6, the microcontroller U1 starts timing for the light - shielding buffer time period. During the light - shielding buffer time period, if V3 continuously remains less than M6, the microcontroller U1 controls the light - valve liquid crystal glass to be in a light - transmitting state. If it is collected that V3 is greater than or equal to M6, the microcontroller U1 restarts timing for the light - shielding buffer time period.

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