CN113829987A - Intelligent automobile visual field control device and control method thereof - Google Patents
Intelligent automobile visual field control device and control method thereof Download PDFInfo
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- CN113829987A CN113829987A CN202111315174.3A CN202111315174A CN113829987A CN 113829987 A CN113829987 A CN 113829987A CN 202111315174 A CN202111315174 A CN 202111315174A CN 113829987 A CN113829987 A CN 113829987A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
- B60Q1/02—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
- B60Q1/04—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights
- B60Q1/14—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights having dimming means
- B60Q1/1415—Dimming circuits
- B60Q1/1423—Automatic dimming circuits, i.e. switching between high beam and low beam due to change of ambient light or light level in road traffic
- B60Q1/143—Automatic dimming circuits, i.e. switching between high beam and low beam due to change of ambient light or light level in road traffic combined with another condition, e.g. using vehicle recognition from camera images or activation of wipers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
- B60Q1/02—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
- B60Q1/04—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights
- B60Q1/14—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights having dimming means
- B60Q1/1438—Actuating means for dimming masks or screens
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- Mechanical Engineering (AREA)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
Abstract
The invention relates to the technical field of intelligent control of automobiles, in particular to an intelligent control device for the visual field of an automobile and a control method thereof; the high beam and low beam light type liquid crystal sun shield comprises a main control module, a high beam light, a low beam light, a photosensitive probe and a light valve liquid crystal sun shield, wherein the photosensitive probe comprises a shading shell and a photosensitive diode, a shading hole penetrating through the interior is formed in the front end of the shading shell, the photosensitive diode is arranged in the shading shell, and the photosensitive diode faces the shading hole; the high beam, the dipped headlight, the photosensitive diode and the light valve liquid crystal sun shield are all electrically connected with the main control module; the intelligent control of the high-beam and low-beam lamps and the light valve liquid crystal sunshade can be realized, the frequent manual operation is reduced, and the design of the shading shell can improve the accuracy of the photosensitive diode for collecting the illumination intensity in the front of the vehicle; the structure of shading hole is adopted, the light irradiated from the side can be blocked by the shading hole, and the light collected by the photosensitive diode arranged in the shading hole is the light coming from the front.
Description
Technical Field
The invention relates to the technical field of automobile intelligent control, in particular to an automobile visual field intelligent control device and a control method thereof.
Background
With the continuous progress and development of science and technology, the technology of the intelligent automobile is gradually mature, the intelligent automobile is a comprehensive system integrating the functions of environmental perception, planning decision, multi-level auxiliary driving and the like, the intelligent automobile intensively applies the technologies of computer, modern sensing, information fusion, communication, artificial intelligence, automatic control and the like, and the intelligent automobile is a typical high and new technology comprehensive body. The current research on intelligent vehicles mainly aims to improve the safety and the comfort of automobiles and provide excellent human-vehicle interaction interfaces. In recent years, intelligent vehicles have become hot spots for the research in the field of vehicle engineering in the world and new power for the growth of the automobile industry, and many developed countries incorporate the intelligent vehicles into intelligent transportation systems which are intensively developed by the intelligent vehicles;
at present, when a vehicle runs at night, the high beam and the low beam need to be used in combination with the national use regulations of coming out of the station, when the vehicle runs on a normal road, if a vehicle comes from a distance, the high beam needs to be closed, when the vehicle suddenly runs to a dark environment, the high beam needs to be opened to clearly see a road section ahead in order to improve the visual field distance, and when an oncoming vehicle appears from a relatively close position, for example, in a turning road section, the high beam needs to be closed; when the vehicle is driven in the daytime, too strong light can irritate the eyes of a driver, the prior art is realized by the light barrier, and in order to facilitate use and separate from manual operation, the prior art designs the light barrier for the liquid crystal glass, so that the transmittance of the liquid crystal glass can be automatically controlled according to the intensity of the light, and the effect of intelligent control is achieved;
in summary, during driving, a driver needs to adjust a driving view according to different environments to guarantee driving safety, the driving view needs to be adjusted by means of frequent manual operation, potential safety hazards easily occur in some emergency situations, and therefore a system with intelligent control needs to be designed for the driving view.
Disclosure of Invention
The present invention aims to overcome the above-mentioned shortcomings and provide a technical solution to solve the above-mentioned problems. In order to achieve the purpose, the invention provides the following technical scheme: an intelligent control device for the visual field of an automobile comprises a main control module, a high beam, a dipped headlight, a photosensitive probe and a light valve liquid crystal sun shield, wherein the photosensitive probe comprises a shading shell and a photosensitive diode; the high beam, the dipped headlight, the photosensitive diode and the light valve liquid crystal sun shield are all electrically connected with the main control module.
Preferably, the shading shell comprises a fixing plate, rotating shaft supporting plates respectively arranged on two sides of the fixing plate, and a shading sleeve rotatably connected between the two rotating shaft supporting plates, wherein a pasting layer is arranged at the bottom of the fixing plate, a shading hole is formed in the front side of the shading sleeve, a wire passing port is formed in the rear side of the shading sleeve, and the photosensitive diode is arranged inside the shading sleeve.
Preferably, the inner parts of the two ends of the shading sleeve are respectively provided with a threaded hole, the two ends of the shading sleeve are connected with a rotating shaft cover through the threaded holes, and the rotating shaft cover is rotatably connected with the rotating shaft supporting plate.
Preferably, the telescopic inner wall of shading is provided with the thickening strip, and the shading hole runs through in the thickening strip, is provided with the setting element in shading hole corresponding to the open position department of thickening strip, and photodiode passes through setting element fixed mounting and corresponds the open position department of thickening strip in shading hole.
Preferably, the outer wall of the shading sleeve is provided with friction grains.
Preferably, the main control module comprises 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 lamp D1, wherein the single chip microcomputer U1 is of a PIC12F675 type, a 3 rd pin of the single chip microcomputer U1 controls the high beam switch by controlling on-off of the electronic switch K1, and a 5 th pin of the single chip microcomputer U1 controls the low beam switch by controlling on-off of the electronic switch K2; the power supply voltage is filtered by a capacitor C1 and then connected with the 1 st pin of the singlechip U1, the power supply voltage is filtered by a capacitor C2 and then connected with the anode of a photosensitive diode, the cathode of the photosensitive diode is grounded after voltage division by a resistor R3, the cathode of the photosensitive diode is connected with the 6 th pin of the singlechip U1 after current limiting by a resistor R2, the anode of the start indicator lamp D1 is connected with the 8 th pin of the singlechip U1, and the cathode of the start indicator lamp D1 is grounded after current limiting by a resistor R1.
A control method of an automobile visual field intelligent control device comprises the automobile visual field intelligent control device, and comprises the following steps:
and step 3, setting a variable calculation formula in the single chip microcomputer U1 according to the interval:
1) according to the high beam interval T1, a variable value Va, a variable value Vb, a count value Ca and a count value Cb are set in the single chip microcomputer U1, and a unit time period is set; in unit time quantum, when singlechip U1 passes through photosensitive probe collection vehicle the place ahead illumination intensity in Ta, do the addition of cycle to variable value Va according to count value Ca and calculate, the computational formula is: va ═ Va + Ca; when the singlechip U1 passes through photosensitive probe and gathers the illumination intensity in the vehicle place ahead in Tb, do the addition of periodic cycle to variable value Vb according to count value Cb and calculate, the computational formula is: vb is Vb + Cb; wherein the unit time period is N times the addition calculation period;
2) according to the low beam interval T2, a variable value V2 and a count value C2 are set in a single chip microcomputer U1, when the light-sensitive probe collects that the illumination intensity in front of the vehicle is in T2, the variable value V2 is subjected to periodic cycle addition calculation according to the count value C2, and the calculation formula is as follows: v2 ═ V2+ C2;
3) according to the shading interval T3, a variable value V3 and a count value C3 are set in a single chip microcomputer U1, when the light intensity of the light-sensitive probe collected in front of the vehicle is within T3, the variable value V3 is subjected to periodic cyclic addition calculation according to the count value C3, and the calculation formula is as follows: v3 ═ V3+ C3;
Preferably, a threshold u, a threshold v and a threshold w are set in the high beam off buffer Ta, and u < v < w, and the count value Ca is set with Cu, Cv and Cw according to the threshold in the high beam off buffer Ta, and Cu < Cv < Cw; when the singlechip U1 acquires that the illumination intensity in front of the vehicle is greater than or equal to U and less than v through the photosensitive probe, Ca is equal to Cu, when the singlechip U1 acquires that the illumination intensity in front of the vehicle is greater than or equal to v and less than w, Ca is equal to Cv, and when the singlechip U1 acquires that the illumination intensity in front of the vehicle is greater than or equal to w through the photosensitive probe, Ca is equal to Cw; a threshold value x, a threshold value y and a threshold value z are set in the high beam turn-on buffer interval Tb, and u is larger than x and larger than y and larger than z; cx, Cy and Cz are set according to a threshold value in the high beam opening buffer interval Tb by the count value Cb, wherein Cx is less than Cy and less than Cz, Ca is equal to Cx when the single chip microcomputer U1 collects the illumination intensity in front of the vehicle through the photosensitive probe and is less than or equal to x and greater than y, Ca is equal to Cy when the single chip microcomputer U1 collects the illumination intensity in front of the vehicle through the photosensitive probe and is less than or equal to y and greater than z, and Ca is equal to Cz when the single chip microcomputer U1 collects the illumination intensity in front of the vehicle through the photosensitive probe and is less than or equal to z.
Preferably, a low beam buffering time period is set in the single chip microcomputer U1, when V2 is smaller than M4, the single chip microcomputer U1 enters the timing of the low beam buffering time period, in the low beam buffering time period, if V2 is continuously kept smaller than M4, the single chip microcomputer U1 controls the low beam to be turned off, and if V2 is acquired to be larger than or equal to M4, the single chip microcomputer U1 enters the timing of the low beam buffering time period again.
Preferably, a shading buffering time period is set in the single chip microcomputer U1, when the V3 is smaller than M6, the single chip microcomputer U1 enters the timing of the shading buffering time period, in the shading buffering time period, if the V3 is continuously kept smaller than M6, the single chip microcomputer U1 controls the light valve liquid crystal glass to be in a light transmission state, and if the collected V3 is larger than or equal to M6, the single chip microcomputer U1 enters the timing of the shading buffering time period again.
Compared with the prior art, the invention has the following beneficial effects:
1) the intelligent control of the high-beam and low-beam lamps and the light valve liquid crystal sunshade can be realized, the frequent manual operation is reduced, and the design of the shading shell can improve the accuracy of the photosensitive diode for collecting the illumination intensity in the front of the vehicle; the structure of the shading hole is adopted, light irradiated from the side is blocked by the shading hole, and light collected by a photosensitive diode arranged in the shading hole is light coming from the front;
2) the control of the high beam and the low beam is to control the opening and closing of the high beam, the low beam and the light valve liquid crystal sun shield according to the value of the illumination intensity in unit time; when a vehicle runs on a normal road and a vehicle comes from a far place, after the automatic high beam system detects the vehicle, if the direction of the coming vehicle of the opposite side is not changed after the variable value Vb is greater than or equal to the high beam turn-off drive value M2 in a unit time period, the system can control the high beam of the vehicle to be turned off; when the vehicle suddenly runs to a dark environment, such as a road without illumination, the system detects that the vehicle enters the dark environment, the dipped headlight is instantly turned on, and if the variable value Va is greater than or equal to the high beam light-on driving value M1 in a unit time period and is still in the dark environment, the high beam light is automatically turned on; when the coming vehicle of the opposite side appears from a relatively close position, the illumination intensity detected by the system is relatively bright, the detection count value is accelerated, and the high beam is closed in advance; the illumination intensity in front of the automobile can be accurately judged in the driving process of the automobile, and the driving visual field can be adjusted according to different illumination intensities, so that the driving safety is effectively guaranteed;
3) in order to prevent the high beam from changing continuously caused by the change of the light source of the opposite vehicle and the coming vehicle, the high beam is set with a buffer stage between a threshold value x and a threshold value u; setting the speed of the counting value under different thresholds, so that when the light is in a high beam interval T1, the high beam can be quickly turned on under the darker condition, and the high beam can be quickly turned off under the brighter condition; similarly, a dipped headlight buffering time period and a shading buffering time period are respectively set for the dipped headlight and the light valve liquid crystal glass, so that the dipped headlight is not closed immediately after being opened, and the light valve liquid crystal glass is not converted into a light-transmitting state immediately after entering the shading state.
Drawings
FIG. 1 is a schematic view of a structure of a photosensitive probe in the present invention;
FIG. 2 is an exploded view of the construction of the light shield enclosure of the present invention;
FIG. 3 is a schematic cross-sectional view of the light blocking sleeve of the present invention;
FIG. 4 is a schematic diagram of the liquid crystal sun visor and the photosensitive probe of the light valve of the present invention;
FIG. 5 is a block diagram of the modular connections of the circuit portion of the present invention;
FIG. 6 is a schematic circuit connection of the present invention;
fig. 7 is a system overview diagram of the present invention.
The reference numerals and names in the figures are as follows:
10-a main control module, 20-a high beam, 30-a low beam, 40-a photosensitive probe, 50-a light valve liquid crystal sun shield, 41-a shading shell, 42-a photosensitive diode, 410-a friction line, 411-a shading hole, 412-a fixing plate, 413-a rotating shaft supporting plate, 414-a shading sleeve, 415-a wire passing port, 416-a threaded hole, 417-a rotating shaft cover, 418-a thickening bar and 419-a positioning piece.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 2-6, in the embodiment of the present invention, an intelligent control device for a vehicle visual field 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 housing 41 and a photodiode 42, a light shielding hole 411 penetrating through the interior is formed at the front end of the light shielding housing 41, the photodiode 42 is disposed inside the light shielding housing 41, and the photodiode 42 faces the light shielding hole 411; the high beam 20, the low beam 30, the photodiode 42 and the light valve liquid crystal sun visor 50 are all electrically connected with the main control module 10; install photosensitive probe 40 before the windshield in front of the car, or install photosensitive probe 40 before light valve liquid crystal sunshading board 50, make photosensitive diode 42 can only detect the illumination intensity in car the place ahead, then receive the illumination intensity that photosensitive diode 42 gathered through host system 10, control high beam 20 according to illumination intensity, passing lamp 30 and light valve liquid crystal sunshading board 50, through this design, can realize intelligent control high beam 30 and light valve liquid crystal sunshading board 50, reduce frequent manual operation, and the design of shading shell 41 can improve photosensitive diode 42's the degree of accuracy of the front side illumination intensity collection.
As further shown in fig. 2, the light shielding housing 41 includes a fixing plate 412, rotation shaft supporting plates 413 respectively disposed at two sides of the fixing plate 412, and a light shielding sleeve 414 rotatably connected between the two rotation shaft supporting plates 413, an adhesive layer (not shown) is disposed at the bottom of the fixing plate 412, a light shielding hole 411 is disposed at the front side of the light shielding sleeve 414, a wire passing port 415 is disposed at the rear side of the light shielding sleeve 414, and the photodiode 42 is mounted inside the light shielding sleeve 414; threaded holes 416 are further formed in the two ends of the shading sleeve 414 respectively, two ends of the shading sleeve 414 are connected with rotating shaft covers 417 through the threaded holes 416, and the rotating shaft covers 417 are rotatably connected with the rotating shaft supporting plate 413 to finely adjust the angle of the photodiode 42.
As further shown in fig. 2-3, a thickened bar 418 is disposed on an inner wall of the light shielding sleeve 414, and the light shielding hole 411 penetrates through the thickened bar 418, so that the light shielding hole 411 has a sufficient length to ensure that the illumination intensity collected by the photodiode 42 is the illumination intensity right in front of the vehicle; a positioning piece 419 is arranged at the opening position of the light shielding hole 411 corresponding to the thickened strip 418, and the photodiode 42 is fixedly arranged at the opening position of the light shielding hole 411 corresponding to the thickened strip 418 through the positioning piece 419, so that the photodiode 42 is firmly positioned; the outer wall of the light blocking sleeve 414 is provided with a friction texture 410 to facilitate turning adjustment of the light blocking sleeve 414.
Further as shown in fig. 5, the main control module 10 includes a single chip microcomputer U1, an electronic switch K1,The high beam headlamp comprises an electronic switch K2, a resistor R1, a resistor R2, a resistor R3, a capacitor C1, a capacitor C2 and a power-on indicator lamp D1, wherein the type adopted by a single chip microcomputer U1 is PIC12F675, a pin 3 of the single chip microcomputer U1 controls the on-off of a high beam headlamp 20 by controlling the on-off of the electronic switch K1, and a pin 5 of the single chip microcomputer U1 controls the on-off of a low beam headlamp 30 by controlling the on-off of the electronic switch K2; the power supply voltage is filtered by a capacitor C1 and then is connected with the 1 st pin of the singlechip U1, the power supply voltage is filtered by a capacitor C2 and then is connected with the anode of a photosensitive diode 42, the cathode of the photosensitive diode 42 is divided by a resistor R3 and then is grounded, the cathode of the photosensitive diode 42 is limited by a resistor R2 and then is connected with the 6 th pin of the singlechip U1, the anode of a start-up indicator lamp D1 is connected with the 8 th pin of the singlechip U1, and the cathode of the start-up indicator lamp D1 is limited by a resistor R1 and then is grounded; the purpose of converting illumination change into voltage change is realized through the circuit design, and the actual reaction distance is about one hundred fifty meters (namely, the vehicle can be detected by driving the lamp outside one hundred fifty meters); wherein voltage change circuit comprises photosensitive diode 42 and resistance R3, and photosensitive diode 42 can change resistance R3 along with the illumination intensity for the voltage that resistance R3 divides is different:
what singlechip U1 detected is the voltage value of resistance R3.
Referring to fig. 5 to 7, in an embodiment of the present invention, a control method of an intelligent control device for a vehicle visual field includes the following steps:
and step 3, setting a variable calculation formula in the single chip microcomputer U1 according to the interval:
1) according to the high beam interval T1, a variable value Va, a variable value Vb, a count value Ca and a count value Cb are set in the single chip microcomputer U1, and a unit time period is set; in the unit time quantum, when singlechip U1 passes through photosensitive probe 40 and gathers the illumination intensity in the vehicle in front in Ta, do the addition of cycle to variable value Va according to count value Ca and calculate, the computational formula is: va ═ Va + Ca; when the singlechip U1 collects the illumination intensity in front of the vehicle in Tb through the photosensitive probe 40, the periodic and cyclic addition calculation is carried out on the variable value Vb according to the count value Cb, and the calculation formula is as follows: vb is Vb + Cb; wherein the unit time period is N times the addition calculation period;
2) according to the low beam interval T2, a variable value V2 and a count value C2 are set in the single chip microcomputer U1, when the light intensity of the front of the vehicle collected by the photosensitive probe 40 is within T2, the variable value V2 is subjected to periodic cycle addition calculation according to the count value C2, and the calculation formula is as follows: v2 ═ V2+ C2;
3) according to the shading interval T3, a variable value V3 and a count value C3 are set in the single chip microcomputer U1, when the light intensity of the front of the vehicle collected by the photosensitive probe 40 is within T3, the variable value V3 is subjected to periodic cycle addition calculation according to the count value C3, and the calculation formula is as follows: v3 ═ V3+ C3;
Furthermore, a threshold u, a threshold v and a threshold w are set in the high beam off buffer interval Ta, and u is less than v and less than w, and the count value Ca is set with Cu, Cv and Cw according to the threshold in the high beam off buffer interval Ta, and Cu is less than Cv and less than Cw; when the singlechip U1 acquires that the illumination intensity in front of the vehicle is greater than or equal to U and less than v through the photosensitive probe 40, Ca is equal to Cu, when the singlechip U1 acquires that the illumination intensity in front of the vehicle is greater than or equal to v and less than w through the photosensitive probe 40, Ca is equal to Cv, and when the singlechip U1 acquires that the illumination intensity in front of the vehicle is greater than or equal to w through the photosensitive probe 40, Ca is equal to Cw; a threshold value x, a threshold value y and a threshold value z are set in the high beam turn-on buffer interval Tb, and u is larger than x and larger than y and larger than z; the count value Cb is set with Cx, Cy and Cz according to a threshold value in the high beam opening buffer interval Tb, wherein Cx < Cy < Cz, when the illumination intensity of the front of the vehicle collected by the single chip microcomputer U1 through the photosensitive probe 40 is less than or equal to x and is greater than y, Ca is equal to Cx, when the illumination intensity of the front of the vehicle collected by the single chip microcomputer U1 through the photosensitive probe 40 is less than or equal to y and is greater than z, Ca is equal to Cy, and when the illumination intensity of the front of the vehicle collected by the single chip microcomputer U1 through the photosensitive probe 40 is less than or equal to z, Ca is equal to Cz.
Further, a low beam buffering time period is set in the single chip microcomputer U1, when V2 is smaller than M4, the single chip microcomputer U1 enters the timing of the low beam buffering time period, in the low beam buffering time period, if V2 is continuously kept smaller than M4, the single chip microcomputer U1 controls the low beam lamp 30 to be turned off, and if V2 is acquired to be larger than or equal to M4, the single chip microcomputer U1 enters the timing of the low beam buffering time period again.
Further, a shading buffering time period is set in the single chip microcomputer U1, when the V3 is smaller than the M6, the single chip microcomputer U1 enters the timing of the shading buffering time period, in the shading buffering time period, if the V3 is continuously kept smaller than the M6, the single chip microcomputer U1 controls the light valve liquid crystal glass to be in a light transmission state, and if the collected V3 is larger than or equal to the M6, the single chip microcomputer U1 enters the timing of the shading buffering time period again.
In the above technical solution, by setting a high beam interval T1, a low beam interval T2 and a light-shielding interval T3, the three intervals are defined according to the illumination intensity collected by the photodiode 42, then setting variable values and count values in the three intervals, and then setting a high beam turn-on drive value M1, a high beam turn-off drive value M2, a low beam drive value M3, a low beam buffer value M4, a light-shielding drive value M5 and a light-shielding buffer value M6, when the illumination intensity collected by the photodiode 42 falls into a certain interval, the variable values in the interval start to be added by the count values in a periodic cycle, and when the variable values reach the corresponding drive values, the corresponding devices (the high beam 20, the low beam 30 and the light valve liquid crystal sun visor 50) are controlled;
setting a high beam off buffer interval Ta and a high beam on buffer interval Tb for the high beam 20, setting different variable values and count values for the high beam off buffer interval Ta and the high beam on buffer interval Tb, and also setting a unit time period, and then setting a high beam on drive value M1 and a high beam off drive value M2 to determine the variable values; through the program setting, the opening time of the high beam 20 after entering the darker environment and the closing time of the high beam 20 after leaving the darker environment are respectively controlled by judging Va and Vb, so that the accuracy degree of the control of the high beam 20 is improved, when a vehicle runs on a normal road, the far light is dark, the automatic high beam 20 system detects the high beam, if Va is detected to be greater than or equal to M1 in a unit time period, the system can control the automobile high beam 20 to be opened, when the vehicle runs at a far distance, the automatic high beam 20 system detects the high beam, if the direction of the coming vehicle of the opposite side is not changed in the unit time period, so that Vb is greater than or equal to M2, and the system can control the automobile high beam 20 to be closed;
a plurality of threshold values are respectively set in the high beam closing buffer interval Ta and the high beam opening buffer interval Tb, and a plurality of count values are set aiming at the threshold values, so that the system can control the speed of variable value change according to the detected illumination intensity, when the coming vehicle of the opposite side appears from a relatively close position, the illumination intensity detected by the system is relatively bright, the detection count value can be accelerated, and the high beam 20 is closed in advance; similarly, when the vehicle suddenly runs to a dark environment, such as a road without light irradiation, the light detected by the system is dark, the detection count value is accelerated, and the high beam 20 is turned on in advance;
because z is more than y, more than x, more than u, and more than v, less than w, when the illumination intensity falls between the threshold x and the threshold u, the variable value Va and the variable value Vb are not subjected to additive calculation, the high beam 20 is kept in the current state (turned on or turned off), and the count value Ca and the count value Cb are emptied, so that the high beam 20 has a certain buffer area, and the high beam 20 is prevented from being frequently turned on and turned off to cause system instability; similarly, set up short-distance beam buffering time quantum and shading buffering time quantum respectively for passing lamp 30 and light valve liquid crystal glazing for closing at once after passing lamp 30 opens, in order to prevent that the light source change of coming car leads to the continuous change of high beam 20, can not convert the printing opacity state into at once after light valve liquid crystal glazing gets into the shading state, leads to light valve liquid crystal glazing to constantly change when preventing to get into sunshine sheltering from the region temporarily.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (10)
1. An intelligent control device for the field of vision of an automobile is characterized by comprising a main control module, a high beam, a dipped headlight, a photosensitive probe and a light valve liquid crystal sun shield, wherein the photosensitive probe comprises a shading shell and a photosensitive diode; the high beam, the dipped headlight, the photosensitive diode and the light valve liquid crystal sun shield are all electrically connected with the main control module.
2. The intelligent automobile vision control device as claimed in claim 1, wherein the light shielding housing comprises a fixing plate, two pivot support plates respectively disposed at two sides of the fixing plate, and a light shielding sleeve rotatably connected between the two pivot support plates, an adhesive layer is disposed at the bottom of the fixing plate, the light shielding hole is disposed at the front side of the light shielding sleeve, a wire passing port is disposed at the rear side of the light shielding sleeve, and the photodiode is mounted inside the light shielding sleeve.
3. The intelligent automobile vision control device as claimed in claim 2, wherein threaded holes are respectively formed in the inner portions of the two ends of the light shielding sleeve, and two ends of the light shielding sleeve are connected with a rotating shaft cover through the threaded holes, and the rotating shaft cover is rotatably connected with the rotating shaft supporting plate.
4. The intelligent automobile vision control device according to claim 2, wherein a thickened strip is disposed on an inner wall of the light shielding sleeve, the light shielding hole penetrates through the thickened strip, a positioning member is disposed at an opening position of the light shielding hole corresponding to the thickened strip, and the photodiode is fixedly mounted at the opening position of the light shielding hole corresponding to the thickened strip through the positioning member.
5. The intelligent automobile vision control device as claimed in claim 2, wherein the outer wall of the light shielding sleeve is provided with friction lines.
6. The intelligent automobile visual field control device as claimed in any one of claims 1 to 5, wherein the main control module comprises 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 lamp D1, wherein the single chip microcomputer U1 is of a type PIC12F675, a 3 rd pin of the single chip microcomputer U1 controls a high beam switch by controlling on and off of the electronic switch K1, and a 5 th pin of the single chip microcomputer U1 controls a low beam switch by controlling on and off of the electronic switch K2; the power supply voltage is filtered by a capacitor C1 and then connected with the 1 st pin of the singlechip U1, the power supply voltage is filtered by a capacitor C2 and then connected with the anode of a photosensitive diode, the cathode of the photosensitive diode is grounded after voltage division by a resistor R3, the cathode of the photosensitive diode is connected with the 6 th pin of the singlechip U1 after current limiting by a resistor R2, the anode of the start indicator lamp D1 is connected with the 8 th pin of the singlechip U1, and the cathode of the start indicator lamp D1 is grounded after current limiting by a resistor R1.
7. A control method of an automobile visual field intelligent control device comprises the automobile visual field intelligent control device, and is characterized by comprising the following steps:
step 1, a dipped headlight, a high beam, a photosensitive probe, light valve liquid crystal glass and a main control module are arranged in a vehicle, the dipped headlight, the high beam, the photosensitive probe and the light valve liquid crystal glass are respectively and electrically connected with the main control module, and power supply voltage is provided for a circuit part through a power supply in the vehicle;
step 2, setting a high beam interval T1, a low beam interval T2 and a shading interval T3 in a single chip microcomputer U1 of the main control module according to the illumination intensity, and setting a high beam closing buffer interval Ta and a high beam opening buffer interval Tb in a high beam interval T1;
and step 3, setting a variable calculation formula in the single chip microcomputer U1 according to the interval:
1) according to the high beam interval T1, a variable value Va, a variable value Vb, a count value Ca and a count value Cb are set in the single chip microcomputer U1, and a unit time period is set; in unit time quantum, when singlechip U1 passes through photosensitive probe collection vehicle the place ahead illumination intensity in Ta, do the addition of cycle to variable value Va according to count value Ca and calculate, the computational formula is: va ═ Va + Ca; when the singlechip U1 passes through photosensitive probe and gathers the illumination intensity in the vehicle place ahead in Tb, do the addition of periodic cycle to variable value Vb according to count value Cb and calculate, the computational formula is: vb is Vb + Cb; wherein the unit time period is N times the addition calculation period;
2) according to the low beam interval T2, a variable value V2 and a count value C2 are set in a single chip microcomputer U1, when the light-sensitive probe collects that the illumination intensity in front of the vehicle is in T2, the variable value V2 is subjected to periodic cycle addition calculation according to the count value C2, and the calculation formula is as follows: v2 ═ V2+ C2;
3) according to the shading interval T3, a variable value V3 and a count value C3 are set in a single chip microcomputer U1, when the light intensity of the light-sensitive probe collected in front of the vehicle is within T3, the variable value V3 is subjected to periodic cyclic addition calculation according to the count value C3, and the calculation formula is as follows: v3 ═ V3+ C3;
step 4, judging variables, and presetting a high beam turn-on driving value M1, a high beam turn-off driving value M2, a low beam driving value M3, a low beam buffer value M4, a shading driving value M5 and a shading buffer value M6, wherein M3 is less than M4, and M6 is less than M5; when Va is greater than or equal to M1 in a unit time period, the single chip microcomputer U1 controls the high beam to be turned on, and when Vb is greater than or equal to M2 in the unit time period, the single chip microcomputer U1 controls the high beam to be turned off; when the V2 is greater than or equal to M3, the singlechip U1 controls the dipped headlight to be turned on, and when the V2 is less than M4, the singlechip U1 controls the dipped headlight to be turned off; when V3 is greater than or equal to M5, singlechip U1 controls light valve liquid crystal glass to be in a shading state, and when V3 is less than M6, singlechip U1 controls light valve liquid crystal glass to be in a light transmission state.
8. The control method of an intelligent control device for visual field of vehicle as claimed in claim 7, wherein the threshold u, the threshold v, and the threshold w are set in the high beam off buffer Ta, and u < v < w, and the count value Ca is set with Cu, Cv, and Cw according to the threshold in the high beam off buffer Ta, and Cu < Cv < Cw; when the singlechip U1 acquires that the illumination intensity in front of the vehicle is greater than or equal to U and less than v through the photosensitive probe, Ca is equal to Cu, when the singlechip U1 acquires that the illumination intensity in front of the vehicle is greater than or equal to v and less than w, Ca is equal to Cv, and when the singlechip U1 acquires that the illumination intensity in front of the vehicle is greater than or equal to w through the photosensitive probe, Ca is equal to Cw; a threshold value x, a threshold value y and a threshold value z are set in the high beam turn-on buffer interval Tb, and u is larger than x and larger than y and larger than z; cx, Cy and Cz are set according to a threshold value in the high beam opening buffer interval Tb by the count value Cb, wherein Cx is less than Cy and less than Cz, Ca is equal to Cx when the single chip microcomputer U1 collects the illumination intensity in front of the vehicle through the photosensitive probe and is less than or equal to x and greater than y, Ca is equal to Cy when the single chip microcomputer U1 collects the illumination intensity in front of the vehicle through the photosensitive probe and is less than or equal to y and greater than z, and Ca is equal to Cz when the single chip microcomputer U1 collects the illumination intensity in front of the vehicle through the photosensitive probe and is less than or equal to z.
9. The control method of the intelligent control device for the visual field of the automobile as claimed in claim 7, wherein a low beam buffering time period is set in the single chip microcomputer U1, when V2 is smaller than M4, the single chip microcomputer U1 enters the timing of the low beam buffering time period, during the low beam buffering time period, if V2 is continuously kept smaller than M4, the single chip microcomputer U1 controls the low beam to be turned off, and if V2 is collected to be larger than or equal to M4, the single chip microcomputer U1 enters the timing of the low beam buffering time period again.
10. The method as claimed in claim 7, wherein a light blocking buffering period is set in the single chip microcomputer U1, when V3 is smaller than M6, the single chip microcomputer U1 enters the timing of the light blocking buffering period, during the light blocking buffering period, if V3 is continuously kept smaller than M6, the single chip microcomputer U1 controls the light valve liquid crystal glass to be in a light transmission state, and if V3 is collected to be greater than or equal to M6, the single chip microcomputer U1 enters the timing of the light blocking buffering period again.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114396596A (en) * | 2022-01-06 | 2022-04-26 | 常州信息职业技术学院 | Liquid crystal lens-based headlamp module, headlamp and vehicle |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114396596A (en) * | 2022-01-06 | 2022-04-26 | 常州信息职业技术学院 | Liquid crystal lens-based headlamp module, headlamp and vehicle |
| CN114396596B (en) * | 2022-01-06 | 2023-12-05 | 常州信息职业技术学院 | Head lamp module based on liquid crystal lens, head lamp and vehicle with head lamp module |
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