CN112677883A - Manufacturing method of multi-level color-changing anti-dazzling rearview mirror - Google Patents
Manufacturing method of multi-level color-changing anti-dazzling rearview mirror Download PDFInfo
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- CN112677883A CN112677883A CN202110005812.5A CN202110005812A CN112677883A CN 112677883 A CN112677883 A CN 112677883A CN 202110005812 A CN202110005812 A CN 202110005812A CN 112677883 A CN112677883 A CN 112677883A
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Abstract
A method for manufacturing a multi-level color-changing anti-dazzling rearview mirror comprises the following steps that a front sensor and a rear sensor which can collect light intensity signals are respectively connected with a controller which can select whether to input voltage to the rearview mirror according to the light intensity signals input by the front sensor and the rear sensor; the controller forms a loop with the power supply and the rearview mirror through a circuit; the power supply is connected with the rearview mirror through a voltage stabilizer capable of outputting a set voltage value, and the set voltage value is a corresponding voltage value for realizing full color change of the corresponding rearview mirror; the controller is provided with a PWM control end, the PWM control end is connected with the rearview mirror through a voltage transformation module, and the voltage transformation module changes the output voltage of the voltage stabilizer to the rearview mirror according to an input signal of the PWM control end. The invention has the advantages that: the rear-view mirror can change color and can adjust different color changing depths of the rear-view mirror.
Description
Technical Field
The invention relates to the technical field of rearview mirror manufacturing, in particular to a manufacturing method of a multi-level color-changing anti-dazzling rearview mirror.
Background
The traditional Chinese patent application with the application number of CN201810220094.1 entitled anti-glare rearview mirror system and control method discloses an anti-glare rearview mirror system and a control method, wherein light intensity signals are collected by two phototriodes at the front and the rear of a rearview mirror, the phototriodes convert light signals into voltage signals and input the voltage signals into a single chip microcomputer, the single chip microcomputer analyzes and processes the input signals, then whether a voltage needs to be output to the rearview mirror or not is determined, when the voltage is output to the rearview mirror, the light transmittance of the rearview mirror is changed according to the characteristic that electrochromic glass can change color after being electrified, the effect of weakening the reflectivity is achieved, and the anti-glare function is finally achieved. The invention can be suitable for electronic anti-glare automobile interior rearview mirrors of any specification and variety, achieves the required electronic anti-glare effect and ensures long-term normal service life. However, the control method only realizes two application states of color change and no color change of the anti-glare rearview mirror, and cannot meet the use requirements of users requiring different color change depths, so the control method of the anti-glare rearview mirror needs to be further improved.
Disclosure of Invention
The invention aims to solve the technical problem of providing a method for manufacturing a multi-level color-changing anti-dazzling rearview mirror, which can realize the color change of the rearview mirror and can realize the adjustment of different color-changing depths of the rearview mirror, aiming at the current situation of the prior art.
The technical scheme adopted by the invention for solving the technical problems is as follows: the manufacturing method of the multi-level color-changing anti-glare rearview mirror comprises the following steps,
firstly, a front sensor and a rear sensor which can collect light intensity signals are respectively connected with a controller which can select whether to input voltage to a rearview mirror according to the light intensity signals input by the front sensor and the rear sensor;
secondly, the controller forms a loop with the power supply and the rearview mirror through a circuit;
the method is characterized in that: the method also comprises the following steps of,
thirdly, the power supply is connected with the rearview mirror through a voltage stabilizer capable of outputting a set voltage value, and the set voltage value is a corresponding voltage value for realizing full color change of the corresponding rearview mirror;
and fourthly, a PWM control end is arranged on the controller, the PWM control end is connected with the rearview mirror through a voltage transformation module, the manufacture of the multi-level color-changing anti-dazzling rearview mirror is completed, and the voltage transformation module changes the output voltage of the voltage stabilizer to the rearview mirror according to the input signal of the PWM control end.
As an improvement, the rearview mirror comprises an outer rearview mirror and an inner rearview mirror, two PWM control ends are arranged on the controller, the first PWM control end is connected with the inner rearview mirror through a first voltage transformation module, the second PWM control end is connected with the outer rearview mirror through a second voltage transformation module, and the controller synchronously changes the output voltage of the outer rearview mirror and the output voltage of the inner rearview mirror through the first voltage transformation module and the second voltage transformation module.
In a further improvement, the voltage stabilizer connected with the inner rearview mirror is a first adjustable output linear voltage stabilizer outputting 1.2V voltage, and the voltage stabilizer connected with the outer rearview mirror is a second adjustable output linear voltage stabilizer outputting 1.25V voltage.
The voltage regulator is further improved, a first branch circuit with the output voltage of 0.5-1.2V is formed by the first voltage transformation module and the first adjustable output linear voltage regulator, and a second branch circuit with the output voltage of 0.5-1.25V is formed by the second voltage transformation module and the second adjustable output linear voltage regulator.
As an improvement, the outer rear view mirror is composed of a left outer rear view mirror and a right outer rear view mirror, and the output end of the second voltage transformation module is respectively connected with the left outer rear view mirror and the right outer rear view mirror.
As an improvement, the voltage transformation module is an N-channel field effect transistor, when the rearview mirror comprises an outer rearview mirror and an inner rearview mirror, the controller is provided with two PWM control ends, the first PWM control end is connected with the inner rearview mirror through the first N-channel field effect transistor, and the second PWM control end is connected with the outer rearview mirror through the second N-channel field effect transistor.
As a refinement, the controller is a microprocessor chip.
The micro-processing chip is a chip comprising at least two high-precision analog signal acquisition input ports which are respectively connected with the front sensor and the rear sensor.
As an improvement, the controller is connected with a reversing selector switch through a line.
The further improvement is that a triode control module capable of isolating the reversing input signal and the light intensity signal is connected in series with the change-over switch.
Compared with the prior art, the invention has the advantages that: the voltage with set magnitude is provided for the rearview mirror through the voltage stabilizer, and the input voltage on the rearview mirror is changed through the voltage transformation module controlled by the controller, so that the rearview mirror can display the color change depth with different degrees according to the magnitude of the input voltage, and the use target of the multi-level color change and anti-dazzle of the rearview mirror is achieved; the synchronous control of the inner rearview mirror and the outer rearview mirror can be realized through different branches, so that the inner rearview mirror and the outer rearview mirror are synchronously adjusted when the external light changes, and the use target of synchronous multi-level color changing and anti-dazzle of the inner rearview mirror and the outer rearview mirror is realized; the controller adjusts the color changing depth of the rearview mirror in real time through light intensity signals of the front sensor and the rear sensor, feedback is timely, the automation degree is high, and the using effect is good.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
As shown in fig. 1, the method for manufacturing the multi-level color-changing anti-glare rearview mirror of the present embodiment includes the following steps,
firstly, a front sensor 4 and a rear sensor 5 which can collect light intensity signals are respectively connected with a controller 6 which can select whether to input voltage to the rearview mirror according to the light intensity signals input by the front sensor 4 and the rear sensor 5;
secondly, the controller 6 forms a loop with the power supply and the rearview mirror through a circuit;
thirdly, the power supply 7 is connected with the rearview mirror through a voltage stabilizer capable of outputting a set voltage value, and the set voltage value is a corresponding voltage value for realizing full color change of the corresponding rearview mirror;
and fourthly, a PWM control end is arranged on the controller 6, the PWM control end is connected with the rearview mirror through a voltage transformation module, namely, the manufacture of the multi-level color-changing anti-dazzling rearview mirror is completed, and the voltage transformation module changes the output voltage of the voltage stabilizer to the rearview mirror according to the input signal of the PWM control end. The power supply 7 is provided with a conversion module capable of converting 12V external voltage into 5V voltage, and the specific circuit structure of the conversion module belongs to the known technology, so the detailed description is not needed. PWM refers to pulse width modulation, and the operation principle of PWM control is well known to those skilled in the art, and thus will not be described in detail.
The rearview mirror comprises an outer rearview mirror and an inner rearview mirror 1, two PWM control ends are arranged on the controller 6, a first PWM control end 61 is connected with the inner rearview mirror 1 through a first voltage transformation module, a second PWM control end 62 is connected with the outer rearview mirror through a second voltage transformation module, and the controller 6 synchronously changes the output voltage of the outer rearview mirror and the output voltage of the inner rearview mirror 1 through the first voltage transformation module and the second voltage transformation module. The regulator connected to the interior mirror 1 is a first adjustable output linear regulator 71 outputting a voltage of 1.2V, and the regulator connected to the exterior mirror is a second adjustable output linear regulator 72 outputting a voltage of 1.25V. The first voltage transformation module and the first adjustable output linear voltage stabilizer 71 form a first branch circuit with the output voltage of 0.5-1.2V, and the second voltage transformation module and the second adjustable output linear voltage stabilizer 72 form a second branch circuit with the output voltage of 0.5-1.25V. The outer rearview mirror is composed of a left outer rearview mirror 2 and a right outer rearview mirror 3, and the output end of the second voltage transformation module is respectively connected with the left outer rearview mirror 2 and the right outer rearview mirror 3.
The voltage transformation module is an N-channel field effect transistor, when the rearview mirror comprises an exterior rearview mirror and an interior rearview mirror 1, the controller 6 is provided with two PWM control terminals, the first PWM control terminal 61 is connected with the interior rearview mirror 1 through a first N-channel field effect transistor 81, and the second PWM control terminal 62 is connected with the exterior rearview mirror through a second N-channel field effect transistor 82. The controller 6 is a microprocessor chip. The micro-processing chip is a chip comprising at least two high-precision analog signal acquisition input ports, and the two high-precision analog signal acquisition input ports are respectively connected with the front sensor 4 and the rear sensor 5. The controller 6 is connected with the reverse switch 9 through a line. A triode control module capable of isolating the reversing input signal and the light intensity signal is connected in series with the change-over switch 9. The specific circuit structure of the change-over switch 9, the triode control module, the voltage stabilizer, the front sensor 4, the rear sensor 5, the N-channel field effect transistor and the microprocessing chip belongs to the prior art, so detailed description is not needed, the specific principle of changing the output voltage of the power supply by using the N-channel field effect transistor belongs to the known technology, so detailed description is not needed, the rearview mirrors are electrochromic rearview mirrors, the specific structure belongs to the prior art, and detailed description is not needed.
The working principle is as follows: the inner rear-view mirror judges and outputs different PWM signals to control the on and off of the field effect transistor by acquiring signals of the front and rear sensors through the micro-processing chip, the voltage regulation effect of 0.5-1.25V of the power supply voltage of the inner and outer lenses is realized, the inner and outer lenses can finally realize the anti-dazzling control mode of multi-level control, and different color changing depths are realized.
The front sensor and the rear sensor need to select high-sensitivity phototriodes, so that the light intensity of the rear sensor and the light intensity of the front sensor can be more finely distinguished, and the acquisition precision is improved.
In order to meet the isolation effect of an external input signal and the system, the change-over switch needs to select a triode control circuit which can play an isolation effect.
In order to effectively acquire signals of the front sensor and the rear sensor, the micro-processing chip is required to be provided with at least more than 2 high-precision analog signal acquisition input ports.
The voltage stabilizer connected with the inner rear-view mirror needs to select an adjustable output linear voltage stabilizer, the voltage stabilizer is configured to output at 1.2V through hardware, the voltage stabilizer connected with the outer rear-view mirror needs to select an adjustable output linear voltage stabilizer and output at 1.25V through hardware, and the micro-processing chip needs to control the output of the two voltage stabilizers simultaneously for synchronous output of the two voltage stabilizers.
The voltage transformation module selects an N-channel field effect transistor, and the voltage transformation module realizes 0.5-1.2V output to the inner rearview mirror and 0.5-1.25V output to the outer rearview mirror through the control of the micro-processing chip.
The outside rear view mirror and the inside rear view mirror, although controlled separately by the microprocessor unit, must be controlled synchronously.
With the increasing popularization of anti-glare rearview mirrors, users have higher requirements on anti-glare, and usually the anti-glare mirror only has two states of color change and no color change. For safety reasons, different levels of discoloration are now required in many cases. Therefore, the situation of a user observing the rear of the vehicle normally is not influenced, and the anti-dazzle control rearview mirror capable of being controlled in multiple stages is required. As shown in fig. 1, the structural schematic diagram of the multi-level color-changing anti-glare rearview mirror structure includes a microprocessor chip with at least two paths of AD sampling, a high-sensitivity front and rear photosensitive sensor, a voltage stabilizer, an N-channel field effect transistor, and a peripheral circuit composed of an inner anti-glare lens and an outer anti-glare lens.
When the micro-processing chip receives that the front sensor has multi-gear change between 0-1000 Lux, the multi-gear corresponding rear sensor is adopted for collection, and then the output processing mode of 0.5-1.2V and 0.5-1.25V is realized under the condition that the voltage stabilizer only outputs 1.2V and 1.25V originally through PWM control of the first N-channel field effect tube and the second N-channel field effect tube. Different voltage changes are given to the inside and outside rearview mirror, so that different color changing depths are realized, and the effect of multi-stage anti-dazzling control is realized.
Claims (10)
1. A method for manufacturing a multi-level color-changing anti-dazzling rearview mirror comprises the following steps,
firstly, a front sensor (4) and a rear sensor (5) which can collect light intensity signals are respectively connected with a controller (6) which can select whether to input voltage to the rearview mirror according to the light intensity signals input by the front sensor (4) and the rear sensor (5);
the controller (6) forms a loop with a power supply and a rearview mirror through a circuit;
the method is characterized in that: the method also comprises the following steps of,
thirdly, the power supply (7) is connected with the rearview mirror through a voltage stabilizer capable of outputting a set voltage value, and the set voltage value is a corresponding voltage value for realizing full color change of the corresponding rearview mirror;
and fourthly, a PWM control end is arranged on the controller (6), the PWM control end is connected with the rearview mirror through a voltage transformation module, so that the manufacture of the multi-level color-changing anti-dazzling rearview mirror is completed, and the voltage transformation module changes the output voltage of the voltage stabilizer to the rearview mirror according to the input signal of the PWM control end.
2. The method of manufacturing according to claim 1, wherein: the rearview mirror comprises an outer rearview mirror and an inner rearview mirror (1), two PWM control ends are arranged on the controller (6), the first PWM control end (61) is connected with the inner rearview mirror (1) through a first voltage transformation module, the second PWM control end (62) is connected with the outer rearview mirror through a second voltage transformation module, and the controller (6) synchronously changes the output voltage of the outer rearview mirror and the output voltage of the inner rearview mirror (1) through the first voltage transformation module and the second voltage transformation module.
3. The method of manufacturing according to claim 2, wherein: the voltage stabilizer connected with the inner rear-view mirror (1) is a first adjustable output linear voltage stabilizer (71) outputting 1.2V voltage, and the voltage stabilizer connected with the outer rear-view mirror is a second adjustable output linear voltage stabilizer (72) outputting 1.25V voltage.
4. The method of manufacturing according to claim 3, wherein: the first voltage transformation module and the first adjustable output linear voltage stabilizer (71) form a first branch circuit with the output voltage of 0.5-1.2V, and the second voltage transformation module and the second adjustable output linear voltage stabilizer (72) form a second branch circuit with the output voltage of 0.5-1.25V.
5. The manufacturing method according to any one of claims 2 to 4, characterized in that: the outer rearview mirror is composed of a left outer rearview mirror (2) and a right outer rearview mirror (3), and the output end of the second voltage transformation module is respectively connected with the left outer rearview mirror (2) and the right outer rearview mirror (3).
6. The manufacturing method according to any one of claims 1 to 4, characterized in that: the voltage transformation module is an N-channel field effect transistor, when the rearview mirror comprises an outer rearview mirror and an inner rearview mirror (1), two PWM control ends are arranged on the controller (6), the first PWM control end (61) is connected with the inner rearview mirror (1) through a first N-channel field effect transistor (81), and the second PWM control end (62) is connected with the outer rearview mirror through a second N-channel field effect transistor (82).
7. The manufacturing method according to any one of claims 1 to 4, characterized in that: the controller (6) is a microprocessor chip.
8. The method of manufacturing according to claim 7, wherein: the micro-processing chip comprises at least two high-precision analog signal acquisition input ports, and the two high-precision analog signal acquisition input ports are respectively connected with the front sensor (4) and the rear sensor (5).
9. The manufacturing method according to any one of claims 1 to 4, characterized in that: the controller (6) is connected with the reversing switch (9) through a circuit.
10. The method of manufacturing according to claim 9, wherein: and a triode control module capable of isolating the reversing input signal and the light intensity signal is connected in series with the switch (9).
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113085731A (en) * | 2021-05-10 | 2021-07-09 | 宁波铝宏汽车零部件有限公司 | Control system and control method for controlling antiglare of vehicle rearview mirror |
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