CN108116322B - Dynamic compensation system and dynamic compensation method for vehicle anti-dazzle lens - Google Patents
Dynamic compensation system and dynamic compensation method for vehicle anti-dazzle lens Download PDFInfo
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- CN108116322B CN108116322B CN201611103783.1A CN201611103783A CN108116322B CN 108116322 B CN108116322 B CN 108116322B CN 201611103783 A CN201611103783 A CN 201611103783A CN 108116322 B CN108116322 B CN 108116322B
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- 230000004313 glare Effects 0.000 claims abstract description 78
- 238000001514 detection method Methods 0.000 claims abstract description 15
- 230000008859 change Effects 0.000 claims description 19
- 239000000758 substrate Substances 0.000 claims description 11
- 239000011521 glass Substances 0.000 claims description 10
- 238000002834 transmittance Methods 0.000 claims description 10
- 238000012937 correction Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 239000003990 capacitor Substances 0.000 claims description 4
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 2
- 238000012887 quadratic function Methods 0.000 claims description 2
- 238000005286 illumination Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- 230000004044 response Effects 0.000 description 7
- 238000005259 measurement Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 3
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- 238000006243 chemical reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000004898 kneading Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000002310 reflectometry Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- REHONNLQRWTIFF-UHFFFAOYSA-N 3,3',4,4',5-pentachlorobiphenyl Chemical compound C1=C(Cl)C(Cl)=CC=C1C1=CC(Cl)=C(Cl)C(Cl)=C1 REHONNLQRWTIFF-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000001010 compromised effect Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 125000001791 phenazinyl group Chemical class C1(=CC=CC2=NC3=CC=CC=C3N=C12)* 0.000 description 1
- RUOJZAUFBMNUDX-UHFFFAOYSA-N propylene carbonate Chemical compound CC1COC(=O)O1 RUOJZAUFBMNUDX-UHFFFAOYSA-N 0.000 description 1
- 238000010223 real-time analysis Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R1/00—Optical viewing arrangements; Real-time viewing arrangements for drivers or passengers using optical image capturing systems, e.g. cameras or video systems specially adapted for use in or on vehicles
- B60R1/02—Rear-view mirror arrangements
- B60R1/08—Rear-view mirror arrangements involving special optical features, e.g. avoiding blind spots, e.g. convex mirrors; Side-by-side associations of rear-view and other mirrors
- B60R1/083—Anti-glare mirrors, e.g. "day-night" mirrors
- B60R1/088—Anti-glare mirrors, e.g. "day-night" mirrors using a cell of electrically changeable optical characteristic, e.g. liquid-crystal or electrochromic mirrors
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- Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
- Rear-View Mirror Devices That Are Mounted On The Exterior Of The Vehicle (AREA)
Abstract
The invention belongs to the field of vehicle parts, and particularly relates to a dynamic compensation system and a dynamic compensation method for a vehicle anti-dazzling lens. The utility model provides a dynamic compensation system of vehicle anti-dazzle mirror, its includes the ambient light sensor that detects ambient light to and the glare sensor that detects the glare, its characterized in that: the environment light sensor and the glare sensor are connected with the MCU controller, the MUC controller is connected with a driver and a short-circuit discharger, and the driver and the short-circuit discharger are connected with the electrochromic element. The invention solves the problem of unstable color fluctuation of the color-changing device caused by unreliable detection of the color-changing device.
Description
Technical Field
The invention belongs to the field of vehicle parts, and particularly relates to a dynamic compensation system and a dynamic compensation method for a vehicle anti-dazzling lens.
Background
Glare of automobile driving at night is a key factor and an important problem affecting driving safety, especially on a highway, when a rear automobile is strongly irradiated by a front high beam, the glare produced on a rearview mirror seriously affects the sight and safety operation of a driver, and the influence of the glare is not eliminated for a long time as long as the rear automobile follows within a distance of 200 meters, so that the inner rearview mirror and the outer rearview mirror are preferably both arranged as automatic anti-dazzling mirrors. The appearance of the traditional electrochromic internal rearview anti-dazzle mirror is generally provided with a plastic wrapping edge of 8-10mm, and an inductor is arranged below the outside of the anti-dazzle mirror so as to avoid the influence on light transmittance after the anti-dazzle mirror changes color, but as a result, a plastic wrapping edge is increased, and the sight of a driver is seriously blocked.
In order to solve this problem, many solutions have been studied and devised, which are placed behind an antiglare lens, and a light-passing hole 125 having a diameter of 6-8mm is etched in a reflecting mirror 123 in front of the antiglare lens as shown in fig. 2, and a mirror layer of the area is removed to increase the light transmittance of the hole. But as a result, the integrity of the lens is compromised, both visually and the aesthetics of the anti-glare rearview mirror are affected.
As shown in fig. 3, a commonly used glare detection circuit is that an ambient light sensor 328 facing the forward direction of a vehicle and a glare sensor 327 facing the driver direction are provided, photoresistor elements are adopted, voltage division electric signals of two photoresistors pass through a comparator 340, when ambient light is larger than the glare signal, the comparator 340 outputs a high-level signal to an MCU controller 341, a short-circuit discharger 343 is connected with the short-circuit, an electrochromic element 344 is short-circuited and discharged, and the device is in a colorless state; when the ambient light is less than the glare signal, the comparator 340 outputs a low level signal to the MCU controller 341, the driver 342 turns on the 1.2V driving circuit, the electrochromic element 344 is powered on 1.2V, and the device assumes a darkened blue state.
Since the glare signal detection can only be used normally without a change in the production signal of the glare sensor 27 after the electrochromic element 344 is discolored. If the electrochromic element 344 is placed in front of the glare sensor 27, when it is detected that the ambient light is smaller than the glare signal, the comparator 340 outputs a low level signal to the MCU controller 341, the driver 342 turns on a 1.2V driving circuit, the electrochromic element 344 is connected to 1.2V, the device assumes a darkened blue state, the electrochromic element 344 at this time again plays the role of a color changer filter, as the color of the electrochromic element 344 deepens, the light passing through the color changer filter weakens, a situation that the ambient light is larger than the glare signal occurs to a certain extent, the comparator 340 outputs a high level signal to the MCU controller 341, the short-circuit discharger 343 turns on a short-circuit, the electrochromic element 344 is short-circuited and discharged, the device switches back to a colorless state, the lens color returns to a certain extent, the ambient light is smaller than the glare signal, the electrochromic element 344 begins to change color, and thus the electrochromic element 344 becomes an unstable device with color fluctuation back and forth, and the visual line is seriously affected.
Disclosure of Invention
Aiming at the defects of the prior art, the invention designs a dynamic compensation system of the vehicle-mounted anti-dazzle lens and a dynamic compensation method for detecting the dazzle of the anti-dazzle lens device, and solves the problem of unstable color change fluctuation of a color change device caused by unreliable detection of the color change device.
The technical scheme of the invention is as follows:
The utility model provides a dynamic compensation system of vehicle anti-dazzle mirror, its includes the ambient light sensor that detects ambient light to and the glare sensor that detects the glare, its characterized in that: the environment light sensor and the glare sensor are connected with the MCU controller, the MUC controller is connected with a driver and a short-circuit discharger, and the driver and the short-circuit discharger are connected with the electrochromic element.
One end of the glare inductor is connected with a Vcc power supply, the other end of the glare inductor is connected with a pull-down resistor, a voltage output line connected with the MCU controller is arranged between the glare inductor and the pull-down resistor, and a filter capacitor is connected in parallel on the pull-down resistor.
A dynamic compensation method for a vehicle anti-dazzle lens relates to the description of related parameters: t1 is a timing parameter for starting to change the color of the electrochromic element; t2 is a timing parameter for the electrochromic element to change back to colorless;
The method is characterized in that: the method comprises the following steps:
Step 1, initializing timing parameters t1 and t2 by an MCU controller;
Step 2, detecting ambient light by an ambient light sensor, and judging whether a night condition is met or not; if the judgment is not true, the ambient light sensor continues to detect the ambient light; if the judgment is true, executing the step 3;
Step 3, a glare sensor detects glare, then an MCU controller calculates an actual glare value according to a glare compensation function, compares the actual glare value with the ambient light value detected in the step 2, judges whether a condition for starting the anti-glare is formed, starts a color-changing anti-glare function if the condition is met, and returns to the step 2 if the condition is not met;
Step 4, after the color-changing anti-dazzling function is started, the MCU controller resets the timing parameter t 1; meanwhile, the MCU controller corrects the compensation function, the ambient light sensor and the glare sensor work, and the MCU controller judges whether the signals fed back by the ambient light sensor and the glare sensor in the step 4 start anti-glare;
And 5, if the anti-glare judgment is true, the MCU controller counts t1, when t1 reaches the preset parameter, the step 4 is returned to be repeated, if the anti-glare judgment is not true, the MCU controller controls the anti-glare lens to discharge and turn back to colorless, and meanwhile, the step 2 is returned to zero setting and resetting, and the next round of detection is circulated.
In summary, the invention has the following beneficial effects:
The invention designs a dynamic compensation system of a vehicle anti-dazzle lens, which overcomes the unreliable factors existing in the prior art that the ambient light and the glare are compared through a comparator, and avoids the problem of unstable color fluctuation of a color changing device caused by unreliable detection of the color changing device.
Drawings
FIG. 1 is a diagram showing the structure of an antiglare rearview mirror according to the invention
FIG. 2 is a schematic view of an antiglare rearview mirror according to a conventional mode;
FIG. 3 is a schematic diagram of a conventional glare detection and drive control circuit;
FIG. 4 is a schematic diagram of a glare detection and drive control circuit according to the present invention;
FIG. 5a is a schematic diagram of the electrochromic antiglare mirror power-on electrochromic drive current variation;
FIG. 5b is a schematic diagram of an inductor;
FIG. 5c is a schematic diagram of glare detection by an antiglare lens of a change in the attenuation of a voltage signal;
FIG. 6 is a flow chart of a method for glare detection and drive control in accordance with the present invention;
The anti-dazzle mirror front substrate glass 121, the electrochromic layer 122, the reflecting mirror layer 123, the anti-dazzle mirror rear substrate glass 124, the PCB substrate 126, the glare sensor 127, the ambient light sensor 128, the plastic shell 129, the supporting frame 130, the ambient light sensing filter 131, the ambient light 132, the glare 133, the comparator 340, the MCU controller 341, the electrochromic driver 342, the short-circuit discharger 343, the electrochromic element 344, the illumination sensor 545, the partial pressure measuring resistor 546, the filter capacitor 547, the 551 electrochromic element response current curve 552 glare measuring voltage response curve 553 glare measuring linear compensation curve 555 glare measuring nonlinear compensation curve.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
As shown in fig. 1, in the embodiment of the electrochromic antiglare mirror in the present invention, an electrochromic mirror 144 is composed of an antiglare mirror front substrate glass 121, an electrochromic layer 122, a reflecting mirror layer 123 and an antiglare mirror rear substrate glass 124, wherein the front substrate glass 121 comprises a conductive film, and a conductive wire is led out through a conductive silver paste or an electrode clip; the anti-dazzle mirror rear substrate glass 124 is covered with a reflecting film layer 123, the reflecting film layer 123 has certain light transmittance and has the functions of conducting and reflecting mirrors, and the light transmittance of the reflecting film layer 123 is set to be 5-60%, and 8-40% is selected preferentially; the reflectivity and the light transmittance are contradictory, so that in order to balance various application requirements, the light transmittance is preferentially selected to be 20-40% for the anti-dazzle mirror requiring high transmittance, and the reflectivity is generally reduced to be 40-60%; for antiglare mirrors requiring high reflection, the light transmittance is preferentially selected to be 7 to 12%, and the reflectance is usually increased to be 55 to 70%. The PCB 126 behind the electrochromic mirror 144 comprises a glare sensor 127 and an ambient light sensor 128, wherein the ambient light sensor 128 senses the ambient light in front of the vehicle through an ambient light sensing filter 131, and the glare sensor 127 senses the glare 133 through the electrochromic mirror 144.
As shown in fig. 4, the dynamic compensation system of the vehicle antiglare shield comprises an ambient light sensor 427 for detecting ambient light and a glare sensor 428 for detecting glare, wherein the ambient light sensor 427 and the glare sensor 428 are connected with an MCU controller 441, a driver 442 and a short-circuit discharger 443 are connected with the MUC controller, and the driver 442 and the short-circuit discharger 443 are connected with an electrochromic element 444.
The MCU controller 441 receives the voltage signals of the ambient light sensor 428 and the glare sensor 427, performs AD analog-to-digital conversion to obtain a light sensing value, the frequency of the light sensing value is controlled to be 1-1000 Hz, preferably 10-100 Hz, the AD analog-to-digital conversion is continuously performed for 5-20 times during each measurement, and digital filtering processing is performed on the analog-to-digital converted data, so that the measured light sensing value is ensured to be stable and reliable. The MCU controller 441 also includes a software program for analyzing and processing the measured light sensing signal values, and performs real-time analysis and control of the electrochromic driver 442 and the short-circuit discharger 443 according to the flow shown in fig. 6, so as to implement color change control of the electrochromic element 444.
According to the invention, the ambient light is detected through the ambient light sensor, the glare sensor detects the glare, the voltage signals are fed back to the MCU controller by the glare sensor, the MCU controller calculates the fed back signals to control the color change state of the electrochromic element, and the problem of repeated fluctuation of the electrochromic element caused by comparing the ambient light with the glare through the comparator in the prior art is avoided.
As shown in fig. 5a, the current applied to the electrochromic element 444, for example, 1.0V, is a response curve 551 varying with time, and at the position of time ta, the variation of the current value is smoothed, and the current Ia can be regarded as a fixed value; the current applied to the electrochromic element 444 at 0.8V is a time-varying response 551a, the current applied to the electrochromic element 444 at 1.2V is a time-varying response 551b, and the current value changes toward the plateau point in time substantially near the position ta. The position ta is determined by electrochromic materials, for example, a cathode material of the electrochromic materials adopts viologen redox type compounds, an anode material adopts hydrogenated phenazine compounds, the color changing speed of the electrochromic materials of a mixture in electronic grade propylene carbonate in which the anode material and the cathode material are co-dissolved can be stabilized in 3-5 seconds, the short circuit of the device is changed into colorless only by 4-8 seconds, and the value of the position ta is within the range of 3-8 seconds.
As shown in fig. 5b, which is a schematic diagram of the structure of the sensor of the present invention, in order to detect the voltage signal of the glare sensor 427 placed behind the electrochromic element 444 and functioning as a color changing mirror filter, the output terminal of the illumination sensor 545 is connected to a pull-down resistor 546 and a filter capacitor 547. The illumination sensor 545 adopts the European Po188, and has the characteristics of small dark current, low illumination response, high sensitivity, linear change of current along with illumination enhancement, built-in double-sensitive element, automatic attenuation of near infrared, spectrum response approaching to human eye function curve, built-in micro-signal CMOS amplifier, good temperature stability, visible light transmission, ultraviolet cut-off and near infrared relative attenuation, and enhanced optical filtering effect. In order to meet the requirement of the filter element 444 in front, the pull-down resistor 546 is 10K-100K, preferably 30K-50K, and the power supply voltage Vcc is 3.3-5V, so that the light sensing signal can still be detected under the condition that the filter element 444 is not provided and the illuminance is 0.5-2 lumens. If a photoresistor or a silicon photocell is adopted, the measurement range is difficult to meet the measurement requirement of sensitivity under low illumination. In the case where the filter element 444 is added in front of the glare sensor 427 and the transmittance of the filter element 444 is only 7%, 10 lumens of glare still have an illumination intensity of 0.7 lumens after passing through the filter element, and remain within the range that the illumination sensor 545 can sense. While the intensity of the glare is typically greater than 10 lumens to turn on the anti-glare function, this embodiment provides the necessary conditions for the software program to process the glare sensor 427 to accurately process the detection signal with the filter added in front.
As shown in fig. 5c, which is a graph of the measured output voltage V-out of the detection circuit of fig. 5b, the measured curve without the filter 444 is a horizontal line 555, and the measured voltage Vo remains unchanged; the measurement curve with filter 444 is 552, the shape of curve 552 is substantially the same as the shape of current curve 551 of fig. 5a, and the voltage value changes smoothly at the ta position in the range of 3-8 seconds at the same time, and voltage Va can be treated as a fixed value. The compensation curve for the linear compensation is 553, the compensation function is:
IF(t1)＝(Vo-Va)/ta*t1,
Where t1 is the time at which the electrochromic element 444 begins the color change measurement and is within a defined ta range.
When the kneading process is performed using a quadratic function, the kneading compensation curve is 554, and the voltage value obtained by actual measurement at a certain point tb of the intermediate section is Vb, and the compensation function is:
IF (t 1) =mt12+n×t1, where M and N coefficients are:
M＝(Vo-Vb)*ta-Va*tb)/(ta*tb*(tb-ta))；
N＝((Vo-Vb)*ta2-Vb*tb2)/(ta*tb*(ta-tb))。
likewise, the range of the measured time t1 is also limited to ta.
Considering the phenomenon that electrochromic element 444 may need to be re-electrochromic again to reproduce glare within 0-8 seconds of not fully returning to the colorless state, the effect of the evaluation statistics is taken into account when it is desired to return electrochromic element 444 to colorless. The time setting parameter t2 for changing the electrochromic element 444 back to the colorless state is set to be about 2 times, since it is well known that the time for the electrochromic material to become colorless is typically td in the short-circuit state, for example, 4-8 seconds, about the color change time tc, for example, 2-4 seconds, about 2 times, and then the correction value of the time t of the compensation function is set to be:
t=t1-t1| (td-t 2)/tc/2|; provided t2 is less than tc is valid;
IF (t 1, t 2) = (Vo-Va)/ta×t, linear compensation;
IF (t 1, t 2) =mt2+nt, nonlinear compensation;
A dynamic compensation method for a vehicle anti-dazzle lens relates to the description of related parameters: t1 is a timing parameter for starting to change the color of the electrochromic element; t2 is a timing parameter for the electrochromic element to change back to colorless;
The method is characterized in that: the method comprises the following steps:
Step 1, initializing timing parameters t1 and t2 by an MCU controller;
Step 2, detecting ambient light by an ambient light sensor, and judging whether a night condition is met or not; if the judgment is not true, the ambient light sensor continues to detect the ambient light; if the judgment is true, executing the step 3;
Step 3, a glare sensor detects glare, then an MCU controller calculates an actual glare value according to a glare compensation function, compares the actual glare value with the ambient light value detected in the step 2, judges whether a condition for starting the anti-glare is formed, starts a color-changing anti-glare function if the condition is met, and returns to the step 2 if the condition is not met;
Step 4, after the color-changing anti-dazzling function is started, the MCU controller resets the timing parameter t 1; meanwhile, the MCU controller corrects the compensation function, the ambient light sensor and the glare sensor work, and the MCU controller judges whether the signals fed back by the ambient light sensor and the glare sensor in the step 4 start anti-glare;
And 5, if the anti-glare judgment is true, the MCU controller counts t1, when t1 reaches the preset parameter, the step 4 is returned to be repeated, if the anti-glare judgment is not true, the MCU controller controls the anti-glare lens to discharge and turn back to colorless, and meanwhile, the step 2 is returned to zero setting and resetting, and the next round of detection is circulated.
In summary, the invention has the following beneficial effects:
the invention designs a dynamic compensation system of a vehicle anti-dazzle lens, which solves the problems that the environment light and the glare are unreliable through a comparator in the prior art, and the color fluctuation of a color-changing device is unstable due to unreliable detection of the color-changing device.
While the foregoing is directed to embodiments of the present invention, other and further details of the invention may be had by the present invention, it should be understood that the foregoing description is merely illustrative of the present invention and that no limitations are intended to the scope of the invention, except insofar as modifications, equivalents, improvements or modifications are within the spirit and principles of the invention.
Claims (1)
1. The dynamic compensation method of the vehicle anti-dazzle lens adopts a dynamic compensation system of the vehicle anti-dazzle lens, and is characterized in that: the dynamic compensation system of the anti-dazzle lens of the vehicle comprises an electrochromic anti-dazzle lens, and consists of anti-dazzle lens front substrate glass, an electrochromic layer, a reflecting mirror layer and anti-dazzle lens rear substrate glass;
The front substrate glass is provided with a conductive film, and the conductive wire is led out through conductive silver paste or an electrode clamp;
the anti-dazzle mirror rear substrate glass is covered with a reflecting film layer with a conducting function and a reflecting mirror function, and the light transmittance of the reflecting film layer is 5-60%;
A glare sensor and an ambient light sensor are arranged on a PCB (printed circuit board) arranged behind the electrochromic anti-dazzle mirror, the ambient light sensor senses ambient light in front of a vehicle through an ambient light sensing filter, and the glare sensor senses glare through the electrochromic anti-dazzle mirror;
The environment light sensor and the glare sensor are connected with the MCU controller, the MUC controller is connected with a driver and a short-circuit discharger, and the driver and the short-circuit discharger are connected with the electrochromic element;
one end of the glare inductor is connected with a Vcc power supply, the other end of the glare inductor is connected with a pull-down resistor, a voltage output line connected with the MCU controller is arranged between the glare inductor and the pull-down resistor, and a filter capacitor is connected in parallel on the pull-down resistor; the dynamic compensation method comprises the following steps:
Step 1, initializing timing parameters t1 and t2 by an MCU controller;
Step 2, detecting ambient light by an ambient light sensor, and judging whether a night condition is met or not; if the judgment is not true, the ambient light sensor continues to detect the ambient light; if the judgment is true, executing the step 3;
step 3, a glare sensor detects glare, then an MCU controller calculates an actual glare value according to a glare compensation function, compares the actual glare value with the ambient light value detected in the step 2, judges whether a condition for starting the anti-glare is formed, starts a color-changing anti-glare function if the condition is met, and returns to the step 2 if the condition is not met; the compensation function described in this step is as follows:
the compensation function by linear compensation is: IF (t 1) = (Vo-Va)/ta×t1;
the compensation function adopting the quadratic function mode is as follows: IF (t 1) =m×t2+n×t1, where M and N coefficients are: m= ((Vo-Vb) ta-Va tb)/(ta tb (tb-ta));
N＝((Vo-Vb)*ta2-Vb*tb2)/(ta*tb*(ta-tb))；
Step 4, after the color-changing anti-dazzle function of the electrochromic anti-dazzle mirror is started, the MCU controller resets the timing parameter t 1; meanwhile, the MCU controller corrects the compensation function, the ambient light sensor and the glare sensor work, and the MCU controller judges whether the signals fed back by the ambient light sensor and the glare sensor in the step 4 start anti-glare; the correction of the compensation function described in this step is as follows:
correction when t2 is smaller than tc is effective: t=t1-t1| (td-t 2)/tc/2|;
correction in a linear compensation manner: IF (t 1, t 2) = (Vo-Va)/ta×t;
correction is performed in a nonlinear compensation manner: IF (t 1, t 2) =mt2+n t;
Step 5, if the anti-glare judgment is true, the MCU controller counts t1, when t1 reaches the preset parameter, the step 4 is returned to be repeated, if the anti-glare judgment is not true, the MCU controller controls the electrochromic anti-glare mirror to discharge and turn back to colorless, and at the same time, the step 2 is returned to be zero reset, and the next round of detection is circulated;
The description of the relevant parameters is referred to in the previous steps: t1 is a timing parameter for starting to change the color of the electrochromic element; t2 is a timing parameter for the electrochromic element to change back to colorless; ta is the time value when the change of the measured output voltage tends to be stable; tb is the time value of the measured output voltage at a certain point in the 0-ta time period; td is the time for the electrochromic material to become colorless in the short-circuited state; tc is the color change time; ta2 is the time point of the ta according to the t2 timing parameter, and tb2 is the time point of the tb according to the t2 timing parameter; va is the voltage at time ta; vb is the voltage at time tb; vo is the measured voltage without a filter.
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| JP7113685B2 (en) * | 2018-07-10 | 2022-08-05 | 株式会社村上開明堂 | Mirror display device and its control method |
| CN110858047B (en) * | 2018-08-23 | 2022-05-10 | 深圳市麦道微电子技术有限公司 | Control system for quick color change of EC lens during backing |
| CN114495510A (en) * | 2022-04-15 | 2022-05-13 | 四川九通智路科技有限公司 | Expressway Internet of things driving safety management system and method |
| CN115230588B (en) * | 2022-08-30 | 2025-07-18 | 宁波视控汽车电子有限公司 | Anti-dazzle rearview system of automobile and anti-dazzle method thereof |
| CN117087540B (en) * | 2023-10-17 | 2024-01-19 | 宁波铼康光电有限公司 | Anti-glare rearview mirror for vehicle |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4690508A (en) * | 1982-12-15 | 1987-09-01 | C-D Marketing, Ltd. | Liquid crystal closed-loop controlled mirror systems |
| CN1338042A (en) * | 1999-01-25 | 2002-02-27 | 金泰克斯公司 | Photo diode light sensor |
| CN102004362A (en) * | 2010-09-26 | 2011-04-06 | 同致电子科技（厦门）有限公司 | Antidazzle mirror with consistency as well as debugging method and measuring tool adopted thereby |
| CN103909868A (en) * | 2013-01-04 | 2014-07-09 | 常州雅谱智能变色光学器件有限公司 | Front-view intelligent anti-glare device of vehicle and manufacturing method of anti-glare mirror thereof |
| CN105291501A (en) * | 2015-05-13 | 2016-02-03 | 信义光伏产业(安徽)控股有限公司 | Blue-light high-reflective glass, production method of blue-light high-reflective glass, and automobile rearview mirror |
| CN206719098U (en) * | 2016-12-05 | 2017-12-08 | 常州市飞拓模塑有限公司 | The dynamic compensating system of vehicle anti-dazzle glasses |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050094278A1 (en) * | 1997-09-16 | 2005-05-05 | Northman Bradley L. | Individual mirror control system |
-
2016
- 2016-12-05 CN CN201611103783.1A patent/CN108116322B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4690508A (en) * | 1982-12-15 | 1987-09-01 | C-D Marketing, Ltd. | Liquid crystal closed-loop controlled mirror systems |
| CN1338042A (en) * | 1999-01-25 | 2002-02-27 | 金泰克斯公司 | Photo diode light sensor |
| CN102004362A (en) * | 2010-09-26 | 2011-04-06 | 同致电子科技（厦门）有限公司 | Antidazzle mirror with consistency as well as debugging method and measuring tool adopted thereby |
| CN103909868A (en) * | 2013-01-04 | 2014-07-09 | 常州雅谱智能变色光学器件有限公司 | Front-view intelligent anti-glare device of vehicle and manufacturing method of anti-glare mirror thereof |
| CN105291501A (en) * | 2015-05-13 | 2016-02-03 | 信义光伏产业(安徽)控股有限公司 | Blue-light high-reflective glass, production method of blue-light high-reflective glass, and automobile rearview mirror |
| CN206719098U (en) * | 2016-12-05 | 2017-12-08 | 常州市飞拓模塑有限公司 | The dynamic compensating system of vehicle anti-dazzle glasses |
Non-Patent Citations (1)
| Title |
|---|
| 互补型自动防眩EC电致变色后视镜的研制;赵博选;;甘肃科技(第20期) * |
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