CN218781902U - Color control and detection circuit and electronic equipment - Google Patents
Color control and detection circuit and electronic equipment Download PDFInfo
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- CN218781902U CN218781902U CN202122083081.4U CN202122083081U CN218781902U CN 218781902 U CN218781902 U CN 218781902U CN 202122083081 U CN202122083081 U CN 202122083081U CN 218781902 U CN218781902 U CN 218781902U
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Abstract
The utility model relates to a colour control and detection circuitry, electronic equipment, colour control and detection circuitry include: a control system a light emitting circuit a photosensitive detection circuit and an amplification circuit; the light-emitting circuit, the photosensitive detection circuit and the amplifying circuit are all electrically connected with the control system; the light-emitting circuit is used for emitting red light, green light or blue light for irradiating the object to be detected according to the control information of the control system; the photosensitive detection circuit is used for acquiring reflected light of the object to be detected, forming an electric signal and sending the electric signal to the amplifying circuit; the amplifying circuit amplifies, filters and sends the electric signal to the control system; and the control system determines the color category of the object to be detected according to the output signal of the amplifying circuit in the lighting period.
Description
Technical Field
The utility model relates to a colour identification technical field especially relates to a colour control and detection circuitry, electronic equipment.
Background
At present, color recognition is more and more widely used in modern social life. At present, products for color identification in the market are mainly for industrial use and are expensive, and imported special color identification sensor chips such as TCS230, TCS3200 and TCS34725 are generally adopted. However, the chips are greatly interfered by external ambient light, and a light supplement lamp needs to be added in a closed space for use, so that color detection is not accurate.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
In view of the above-mentioned shortcoming, the deficiency of prior art, the utility model provides a colour control and detection circuitry, electronic equipment, it has solved in the traditional scheme special colour discernment sensor chip use cost height, the unsafe problem of colour detection.
(II) technical scheme
In order to achieve the above object, the utility model discloses a main technical scheme include:
the present embodiment provides a color control and detection circuit, including: the control system, the light-emitting circuit, the photosensitive detection circuit and the amplifying circuit;
the light-emitting circuit, the photosensitive detection circuit and the amplifying circuit are all electrically connected with the control system;
the light-emitting circuit is used for emitting red light, green light or blue light for irradiating the object to be detected according to the control information of the control system;
the photosensitive detection circuit is used for acquiring reflected light of the object to be detected, forming an electric signal and sending the electric signal to the amplifying circuit;
the amplifying circuit amplifies, filters and sends the electric signal to the control system;
and the control system determines the color category of the object to be detected according to the output signal of the amplifying circuit in the lighting period.
Preferably, the light emitting circuit includes: an LED light emitting circuit.
Preferably, the LED lighting circuit includes:
the luminous body LED1, a first control signal line LED _ R, a second control signal line LED _ G and a third control signal line LED _ B which are connected with the control system;
the first control signal line LED _ R is connected with the luminous body LED1 through a ninth resistor R9, and when the first control signal line LED _ R receives a low level signal output by the control system, the luminous body LED1 emits red light;
the second control signal line LED _ G is connected with the luminous body LED1 through an eighth resistor R8, and when the second control signal line LED _ G receives a low-level signal output by the control system, the luminous body LED1 emits green light;
the third control signal line LED _ B is connected to the light emitting body LED1 via a seventh resistor R7, and when the third control signal line LED _ B receives a low level signal output by the control system, the light emitting body LED1 emits blue light.
Preferably, the photosensitive detection circuit includes: the circuit comprises a photosensitive diode P1, a first resistor R1, a fourth resistor R4, a first capacitor C1, a second capacitor C2 and a signal output end D;
the first resistor R1 and the first capacitor C1 form a low-pass filter circuit;
one end of the low-pass filter circuit is connected with a power supply, and the other end of the low-pass filter circuit is connected with the cathode of the photosensitive diode;
the positive electrode of the photosensitive diode P1 is connected with the signal output end D, and the positive electrodes are grounded through a second capacitor C2 and a fourth resistor R4 which are parallel to each other.
Preferably, the amplifying circuit includes:
the circuit comprises a third capacitor C3, a fourth capacitor C4, a second resistor R2, a third resistor R3, a fifth resistor R5, a sixth resistor R6, a first triode Q1, a second triode Q2 and a signal output interface ADC-RGB for connecting a control system;
the first end of the second resistor R2 is connected with the cathode of the photosensitive diode, and the second end of the second resistor R2 is connected with the first end of the third resistor R3 and the base stage of the second triode Q2;
the signal output end D is input to the base stage of the first triode Q1 through the third capacitor C3 and the second end of the third resistor R3;
the emitter of the first triode Q1 is grounded through a fifth resistor R5; the collector of the first triode Q1 is connected with the base of the second triode Q2; the collector electrode of the second triode Q2 is connected with a power supply;
an emitter of the second triode Q2 serves as a signal output interface ADC-RGB;
the emitter of the second triode Q2 is also grounded via a parallel sixth resistor R6 and a fourth capacitor C4.
Preferably, the first and second liquid crystal materials are,
the light-emitting period is 2-10ms;
a seventh resistor R7 in the LED light-emitting circuit is 80-160 omega;
an eighth resistor R8 in the LED light-emitting circuit is 80-160 omega;
a ninth resistor R9 in the LED light-emitting circuit is 160-300 omega;
the first resistor R1 is 10-1 k omega;
the first capacitor C1 is 100nF-1uF;
the second capacitor C2 is 10nF-100nF;
the fourth resistor R4 is 100-10 k omega;
the third capacitor C3 is 100nF-1uF;
the fourth capacitor C4 is 10nF-100nF;
the second resistor R2 is 1k omega-10 k omega;
the third resistor R3 is 500K omega-4.7M omega;
the fifth resistor R5 is 1-10K omega;
the sixth resistor R6 is 1-10K omega.
Preferably, the light-emitting circuit, the photosensitive detection circuit and the amplifying circuit are all connected with a 3.3V power supply.
Preferably, the first and second liquid crystal materials are,
the intensities of red light, green light and blue light emitted by the luminous body LED1 in the LED luminous circuit are the same.
Preferably, the first and second liquid crystal materials are,
the light-emitting period is 5ms;
a seventh resistor R7 in the LED light-emitting circuit is 100 omega;
an eighth resistor R8 in the LED light-emitting circuit is 91 omega;
a ninth resistor R9 in the LED light-emitting circuit is 220 omega;
the first resistor R1 is 50 omega;
the first capacitance C1 is 100nF;
the second capacitance C2 is 100nF;
the fourth resistor R4 is 5K omega;
the third capacitor C3 is 1uF;
the fourth capacitance C4 is 100nF;
the second resistor R2 is 5.1K omega;
the third resistor R3 is 2.4M omega;
the fifth resistor R5 is 4.7K omega;
the sixth resistor R6 is 4.7K Ω.
On the other hand, the embodiment further provides an electronic device including any one of the color control and detection circuits.
(III) advantageous effects
The utility model has the advantages that: the utility model discloses a color control and detection circuitry owing to adopt that control system, lighting circuit, photosensitive detection circuit and amplifier circuit constitute, does not use special color identification sensor chip in the traditional scheme, consequently, use cost is low, and the testing result is more accurate.
Meanwhile, in the color control and detection circuit in the embodiment, the control system is electrically connected with the light emitting circuit, the photosensitive detection circuit and the amplifying circuit respectively, so that the control system can determine the color of the object to be detected by converting light reflected by the object to be detected into current according to the voltage value for indicating the intensity of the ambient light where the object to be detected is located when the light emitting circuit does not emit light and when the light emitting circuit emits light.
Drawings
Fig. 1 is a schematic diagram of a color control and detection circuit according to the present invention;
FIG. 2 shows a light-emitting circuit in a color control and detection circuit a schematic diagram of a photosensitive detection circuit and an amplification circuit;
FIG. 3 shows an embodiment of the present invention a schematic diagram of a color control and detection circuit.
[ description of reference ]
R1: a first resistor;
r2: a second resistor;
r3: a third resistor;
r4: a fourth resistor;
r5: a fifth resistor;
r6: a sixth resistor;
r7: a seventh resistor;
r8: an eighth resistor;
r9: a ninth resistor;
c1: a first capacitor;
c2: second one a capacitor;
c3: a third capacitor;
c4: a fourth capacitor;
LED1: a light emitter;
LED _ R: a first control signal line;
LED _ G: a second control signal line;
LED _ B: a third control signal line;
d: a signal output terminal;
p1: a photodiode;
q1: a first triode;
q2: a second triode;
ADC-RGB: and a signal output interface.
Detailed Description
For a better understanding of the present invention, reference will now be made in detail to the present invention, examples of which are illustrated in the accompanying drawings.
In order to better understand the above technical solutions, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
Referring to fig. 1, the present embodiment provides a color control and detection circuit, including: the control system, light emitting circuit, photosensitive detection circuit and amplifier circuit.
The light-emitting circuit, the photosensitive detection circuit and the amplifying circuit are all electrically connected with the control system.
The light-emitting circuit is used for emitting red light, green light or blue light for irradiating the object to be detected according to the control information of the control system.
The photosensitive detection circuit is used for acquiring reflected light of the object to be detected, forming an electric signal and sending the electric signal to the amplifying circuit.
The amplifying circuit amplifies the electric signal, filters the electric signal and sends the electric signal to the control system.
And the control system determines the color category of the object to be detected according to the output signal of the amplifying circuit in the lighting period.
Referring to fig. 2 and 3, in practical application of the present embodiment, the light emitting circuit includes: an LED light emitting circuit.
Referring to fig. 2 and 3, in practical application of the present embodiment, the LED lighting circuit includes:
the LED lighting system comprises a light body LED1, a first control signal line LED _ R, a second control signal line LED _ G and a third control signal line LED _ B which are connected with a control system.
The first control signal line LED _ R is connected with the luminous body LED1 through a ninth resistor R9, and when the first control signal line LED _ R receives a low level signal output by the control system, the luminous body LED1 emits red light; in a specific application of this embodiment, when the first control signal line LED _ R receives a high level signal output by the control system, the light emitting body LED1 extinguishes red light.
The second control signal line LED _ G is connected with the light-emitting body LED1 through an eighth resistor R8, and when the second control signal line LED _ G receives a low-level signal output by the control system, the light-emitting body LED1 emits green light; in a specific application of this embodiment, when the second control signal line LED _ G receives a high level signal output by the control system, the light emitting body LED1 extinguishes green light.
The third control signal line LED _ B is connected to the light emitting body LED1 via a seventh resistor R7, and when the third control signal line LED _ B receives a low level signal output by the control system, the light emitting body LED1 emits blue light. In a specific application of this embodiment, when the third control signal line LED _ B receives a high level signal output by the control system, the light emitting body LED1 extinguishes blue light.
Referring to fig. 2 and 3, in practical application of the present embodiment, the photosensitive detection circuit includes: the circuit comprises a photosensitive diode P1, a first resistor R1, a fourth resistor R4, a first capacitor C1, a second capacitor C2 and a signal output end D.
The first resistor R1 and the first capacitor C1 form a low-pass filter circuit.
One end of the low-pass filter circuit is connected with a power supply, and the other end of the low-pass filter circuit is connected with the cathode of the photosensitive diode, so that a more stable power supply can be provided for a subsequent circuit.
The positive electrode of the photosensitive diode P1 is connected with the signal output end D, and the positive electrode is grounded through a parallel second capacitor C2 and a fourth resistor R4 for voltage division.
In specific application, a 3.3V power supply for supplying power to the photosensitive detection circuit firstly passes through a low-pass filter circuit formed by a first resistor R1 and a first capacitor C1, and the influence generated by power supply ripples is filtered.
When the object to be detected is not irradiated by visible light, the voltage of the signal output end D reflects the ambient light intensity, and the light intensity value is recorded.
In a specific application, the fourth resistor R4 actually functions as a voltage dividing resistor, when there is no illumination, the current of the photodiode P1 is small, and at this time, the voltage (U = IR) across the fourth resistor R4 is small, that is, the voltage at the signal output end D is small, and as the illumination is stronger and stronger, the current is larger and larger, and the voltage at the signal output end D is larger and larger.
When the photosensitive diode P1 is illuminated by the reflected light of the object to be detected, the saturation reverse leakage current of the photosensitive diode P1 is greatly increased to form photocurrent, and the voltage of the signal output end D at the moment is changed along with the change of the incident light intensity.
Referring to fig. 2 and 3, in practical application of the present embodiment, the amplifying circuit includes:
the three-phase current source comprises a third capacitor C3, a fourth capacitor C4, a second resistor R2, a third resistor R3, a fifth resistor R5, a sixth resistor R6, a first triode Q1, a second triode Q2 and a signal output interface ADC-RGB for connecting a control system.
In this embodiment, the types of the first triode Q1 and the second triode Q2 are both S9013.
The first end of the second resistor R2 is connected with the cathode of the photosensitive diode, and the second end of the second resistor R2 is connected with the first end of the third resistor R3 and the base stage of the second triode Q2.
The signal output end D is input to the base stage of the first triode Q1 through the third capacitor C3 and the second end of the third resistor R3.
The emitter of the first triode Q1 is grounded through a fifth resistor R5; the collector of the first triode Q1 is connected with the base of the second triode Q2; and the collector electrode of the second triode Q2 is connected with a power supply.
And the emitter of the second triode Q2 is used as a signal output interface ADC-RGB.
The emitter of the second triode Q2 is also grounded via a parallel sixth resistor R6 and a fourth capacitor C4.
In specific application, according to the reflected light of the surface of an object to be detected, the light energy is converted into an alternating current signal formed by electric energy through the photosensitive detection circuit, and the alternating current signal is amplified to the signal output interface ADC-RGB through the third capacitor C3 and the first triode Q1 and the second triode Q2. The electric signal at this moment also has weak environmental light intensity influence (that is to say, the electric signal at this moment is the electric signal under the common effect of object surface reflection light and external environment light of waiting to detect), but recorded environmental light intensity before using, therefore control system filters the environmental light intensity value of record through program algorithm to reach accurate colour value.
In practical application of this embodiment, the light emitting period is 2-10ms; a seventh resistor R7 in the LED light-emitting circuit is 80-160 omega; an eighth resistor R8 in the LED light-emitting circuit is 80-160 omega; a ninth resistor R9 in the LED light-emitting circuit is 160-300 omega; the first resistor R1 is 10-1 k omega; the first capacitor C1 is 100nF-1uF; the second capacitor C2 is 10nF-100nF; the fourth resistor R4 is 100-10 k omega; the third capacitor C3 is 100nF-1uF; the fourth capacitor C4 is 10nF-100nF; the second resistor R2 is 1k omega-10 k omega; the third resistor R3 is 500K omega-4.7M omega; the fifth resistor R5 is 1-10K omega; the sixth resistor R6 is 1K omega-10K omega.
In practical application of this embodiment, the light emitting circuit, the photosensitive detection circuit and the amplifying circuit are all connected to a 3.3V power supply.
In practical application of this embodiment, the intensities of red light, green light and blue light emitted by the light emitting body LED1 in the LED light emitting circuit are the same. Because the luminous body LED1 has differences in the production process, the luminous body LED1 is connected with resistors with different resistance values in series, so that the intensities of red light, green light and blue light emitted by the luminous body LED1 are the same.
In practical application of this embodiment, the light emitting period is 5ms; a seventh resistor R7 in the LED light-emitting circuit is 100 omega; an eighth resistor R8 in the LED light-emitting circuit is 91 omega; a ninth resistor R9 in the LED light-emitting circuit is 220 omega; the first resistor R1 is 50 omega; the first capacitance C1 is 100nF; the second capacitance C2 is 100nF; the fourth resistor R4 is 5K omega; the third capacitor C3 is 1uF; the fourth capacitance C4 is 100nF; the second resistor R2 is 5.1K omega; the third resistor R3 is 2.4M omega; the fifth resistor R5 is 4.7K omega; the sixth resistor R6 is 4.7K Ω.
The utility model discloses a color control and detection circuit, owing to adopt control system, lighting circuit, photosensitive detection circuit and amplifier circuit, wherein control system respectively with lighting circuit, photosensitive detection circuit and amplifier circuit electricity are connected, therefore control system can, according to obtain when lighting circuit does not give out light and be used for showing the ambient light intensity's that detects the object and locate voltage value, and when lighting circuit, convert the light that detects the object reflection that detects into the electric current and realize treating the definite of the color of detecting the object; compared with the prior art, the color detection device can avoid the problem that the color detection is inaccurate because the object to be detected is easily influenced by the visible light intensity in the color detection, and achieves the purpose that the color detection of the object to be detected is more accurate.
In the description of the present invention, it is to be understood that the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium; either internal to the two elements or in an interactive relationship of the two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present application, unless otherwise expressly stated or limited, a first feature may be "on" or "under" a second feature, and the first and second features may be in direct contact, or the first and second features may be in indirect contact via an intermediate. Also, a first feature "on," "above," and "over" a second feature may be directly or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lower level than the second feature.
In the description herein, the description of the terms "one embodiment," "some embodiments," "an embodiment," "an example," "a specific example" or "some examples" or the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
While embodiments of the present invention have been shown and described, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that modifications, alterations, substitutions and variations may be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.
Claims (10)
1. A color control and detection circuit, comprising: the control system, the light-emitting circuit, the photosensitive detection circuit and the amplifying circuit;
the light-emitting circuit, the photosensitive detection circuit and the amplifying circuit are all electrically connected with the control system;
the light-emitting circuit is used for emitting red light, green light or blue light for irradiating the object to be detected according to the control information of the control system;
the photosensitive detection circuit is used for acquiring reflected light of the object to be detected, forming an electric signal and sending the electric signal to the amplifying circuit;
the amplifying circuit amplifies, filters and sends the electric signal to the control system;
and the control system determines the color category of the object to be detected according to the output signal of the amplifying circuit in the lighting period.
2. The color control and detection circuit of claim 1 wherein the light emitting circuit comprises: an LED light emitting circuit.
3. The color control and detection circuit of claim 2 wherein the LED light emitting circuit comprises:
the LED control system comprises a luminous body (LED 1), a first control signal line (LED _ R), a second control signal line (LED _ G) and a third control signal line (LED _ B), wherein the first control signal line (LED _ R), the second control signal line (LED _ G) and the third control signal line (LED _ B) are connected with the control system;
the first control signal line (LED _ R) is connected with the luminous body (LED 1) through a ninth resistor (R9), and when the first control signal line (LED _ R) receives a low-level signal output by the control system, the luminous body (LED 1) emits red light;
the second control signal line (LED _ G) is connected with the luminous body (LED 1) through an eighth resistor (R8), and when the second control signal line (LED _ G) receives a low-level signal output by the control system, the luminous body (LED 1) emits green light;
the third control signal line (LED _ B) is connected with the luminous body (LED 1) through a seventh resistor (R7), and when the third control signal line (LED _ B) receives a low-level signal output by the control system, the luminous body (LED 1) emits blue light;
a seventh resistor (R7) in the LED light-emitting circuit is 80-160 omega;
an eighth resistor (R8) in the LED light-emitting circuit is 80-160 omega;
and a ninth resistor (R9) in the LED light-emitting circuit is 160-300 omega.
4. A color control and detection circuit according to any of claims 1 to 3, wherein the photosensitive detection circuit comprises: the circuit comprises a photosensitive diode (P1), a first resistor (R1), a fourth resistor (R4), a first capacitor (C1), a second capacitor (C2) and a signal output end (D);
the first resistor (R1) and the first capacitor (C1) form a low-pass filter circuit;
one end of the low-pass filter circuit is connected with a power supply, and the other end of the low-pass filter circuit is connected with the cathode of the photosensitive diode;
the positive electrode of the photosensitive diode (P1) is connected with the signal output end (D), and the positive electrode is grounded through a second capacitor (C2) and a fourth resistor (R4) which are parallel to each other.
5. The color control and detection circuit of claim 4, wherein the amplification circuit comprises:
the circuit comprises a third capacitor (C3), a fourth capacitor (C4), a second resistor (R2), a third resistor (R3), a fifth resistor (R5), a sixth resistor (R6), a first triode (Q1), a second triode (Q2) and a signal output interface (ADC-RGB) for connecting a control system;
the first end of the second resistor (R2) is connected with the cathode of the photosensitive diode, and the second end of the second resistor (R2) is connected with the first end of the third resistor (R3) and the base stage of the second triode (Q2);
the signal output end (D) is input to the base stage of the first triode (Q1) through a third capacitor (C3) and a second end of a third resistor (R3);
the emitter of the first triode (Q1) is grounded through a fifth resistor (R5); the collector electrode of the first triode (Q1) is connected with the base stage of the second triode (Q2); the collector electrode of the second triode (Q2) is connected with a power supply;
an emitter of the second triode (Q2) is used as a signal output interface (ADC-RGB);
the emitter of the second triode (Q2) is also grounded through a parallel sixth resistor (R6) and a fourth capacitor (C4).
6. The color control and detection circuit of claim 5,
the light-emitting period is 2-10ms;
the first resistor (R1) is 10-1 k omega;
the first capacitance (C1) is 100nF-1uF;
the second capacitance (C2) is 10nF-100nF;
the fourth resistor (R4) is 100-10 k omega;
the third capacitance (C3) is 100nF-1uF;
the fourth capacitance (C4) is 10nF-100nF;
the second resistor (R2) is 1k omega-10 k omega;
the third resistor (R3) is 500K omega-4.7M omega;
the fifth resistor (R5) is 1-10K omega;
and the sixth resistor (R6) is 1-10K omega.
7. The color control and detection circuit according to claim 5, wherein the light emitting circuit, the photosensitive detection circuit and the amplifying circuit are all connected to a 3.3V power supply.
8. The color control and detection circuit of claim 3,
the intensities of red light, green light and blue light emitted by a luminous body (LED 1) in the LED luminous circuit are the same;
a seventh resistor (R7) in the LED light-emitting circuit is 100 omega;
an eighth resistor (R8) in the LED light-emitting circuit is 91 omega;
the second of the LED lighting circuits the nine resistors (R9) are 220 Ω.
9. The color control and detection circuit of claim 6,
the light-emitting period is 5ms;
the first resistance (R1) is 50 Ω;
the first capacitance (C1) is 100nF;
the second capacitance (C2) is 100nF;
the fourth resistor (R4) is 5K omega;
the third capacitance (C3) is 1uF;
the fourth capacitance (C4) is 100nF;
the second resistance (R2) is 5.1K omega;
-said third resistance (R3) is 2.4M Ω;
the fifth resistor (R5) is 4.7K omega;
the sixth resistor (R6) is 4.7K omega.
10. An electronic device comprising the color control and detection circuit of any of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122083081.4U CN218781902U (en) | 2021-08-31 | 2021-08-31 | Color control and detection circuit and electronic equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122083081.4U CN218781902U (en) | 2021-08-31 | 2021-08-31 | Color control and detection circuit and electronic equipment |
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| CN218781902U true CN218781902U (en) | 2023-03-31 |
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| CN202122083081.4U Active CN218781902U (en) | 2021-08-31 | 2021-08-31 | Color control and detection circuit and electronic equipment |
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