Electrochromic glass control circuit and control method thereof

Abstract

The invention discloses an electrochromic glass control circuit and a control method thereof.The control circuit comprises a voltage source unit, a photosensitive control unit, a relay unit, a voltage stabilizing unit and an output unit, the photosensitive control unit is connected with the coil end of the relay unit, and the voltage source unit is connected with the input end of the relay unit and the control end of the photosensitive control unit; the output end of the relay unit is connected with the input end of the voltage stabilizing unit; the output end of the voltage stabilizing unit is connected with the input end of the output unit; the voltage source unit is used for providing initial voltage, the photosensitive control unit is used for adjusting photosensitive sensitivity, the relay unit is used for isolating the voltage source unit and the output unit, the voltage stabilizing unit is used for converting the initial voltage into direct-current voltage, and the output unit is used for adjusting the magnitude of the direct-current voltage and outputting the direct-current voltage to the electrochromic glass. According to the embodiment of the invention, the illumination transmittance of the photochromic glass can be intelligently adjusted under different illumination conditions, and the comfort of a user is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of electrochromic glass, and in particular to an electrochromic glass control circuit and a control method thereof. Background Art

[0002] With the development of smart buildings and energy-saving technologies, electrochromic glass has been widely used in many fields such as architecture, automobiles, and aviation. Electrochromic glass can change the transparency of the glass by adjusting the external voltage, thereby controlling the light transmittance, improving indoor comfort, and reducing air-conditioning energy consumption.

[0003] However, existing electrochromic glass control systems usually use a fixed voltage power supply method and lack the ability to adaptively adjust the ambient light intensity. Due to the large variations in the intensity of external light, the fixed voltage mode may cause the glass color to change untimely or excessively, affecting the user experience and failing to fully utilize the energy-saving and intelligent control advantages of electrochromic glass. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide an electrochromic glass control circuit and a control method thereof in view of the deficiencies in the prior art, so as to overcome the problem that the existing electrochromic glass control system lacks the ability to adaptively adjust the ambient light intensity.

[0005] On the one hand, in order to solve the defects and shortcomings of the prior art, the present invention provides an electrochromic glass control circuit, including a voltage source unit, a photosensitive control unit, a relay unit, a voltage stabilizing unit and an output unit, wherein the photosensitive control unit is connected to the coil end of the relay unit, the voltage source unit is connected to the input end of the relay unit and the control end of the photosensitive control unit, the output end of the relay unit is connected to the input end of the voltage stabilizing unit, and the output end of the voltage stabilizing unit is connected to the input end of the output unit; wherein, The voltage source unit is used to provide an initial voltage, the photosensitivity control unit is used to adjust the photosensitivity, the relay unit is used to isolate the voltage source unit from the output unit, the voltage stabilizing unit is used to convert the initial voltage into a DC voltage, and the output unit is used to adjust the magnitude of the DC voltage and output it to the electrochromic glass.

[0006] Furthermore, the photosensitive control unit includes a photosensitive voltage divider module and a control module. The photosensitive voltage divider module is used to output the photosensitive voltage after the initial voltage is divided to the control module, and the control module is used to control the coil end of the relay unit according to the photosensitive voltage. Further, the control module includes a control chip U1, a diode D1 and a capacitor C3, the control chip U1 includes a first end, a second end, a third end, a fourth end, a fifth end, a sixth end and an eighth end, the third end of the control chip U1 is connected to the coil end of the relay unit and the anode of the diode D1, the fifth end of the control chip U1 is connected to the photosensitivity voltage divider module through the capacitor C3, the first end of the control chip U1 is connected to the photosensitivity voltage divider module, and the fourth end and the eighth end of the control chip U1 are connected to the photosensitivity voltage divider module and the output end of the voltage source unit.

[0007] Further, the photosensitivity voltage divider module includes a variable resistor RP1, a resistor R6, a capacitor C2 and a photoresistor LDR, one end of the photoresistor LDR is connected to the output end of the voltage source unit, the fourth end of the control chip U1, the eighth end of the control chip U1 and the cathode of the diode D1, and the other end is connected to one end of the resistor R6 and one end of the variable resistor RP1, the other end of the resistor R6 is connected to one end of the capacitor C2 and the second end and the sixth end of the control chip, and the other end of the capacitor C2 is connected to the other end of the variable resistor RP1, the control end of the variable resistor RP1, the fifth end of the control chip U1, the first end of the control chip U1 and the voltage stabilizing unit.

[0008] Further, the voltage stabilizing unit includes a voltage stabilizing chip U2, a Schottky diode VD, a capacitor C4, a capacitor C5 and a capacitor C6. The voltage stabilizing chip U2 includes a first pin, a second pin, a third pin, a fourth pin and a fifth pin. One end of the capacitor C4 is connected to the output end of the relay unit, the fifth pin of the voltage stabilizing chip U2, one end of the capacitor C5 and one end of the capacitor C6. The other end of the capacitor C4 is connected to the other end of the capacitor C5, the first pin of the voltage stabilizing chip U2, the cathode of the Schottky diode VD and the output unit. The other end of the capacitor C6 is connected to the fourth pin of the voltage stabilizing chip U2. The third pin of the voltage stabilizing chip U2 is connected to the anode of the Schottky diode VD and the output unit. The second pin of the voltage stabilizing chip U2 is connected to the output unit.

[0009] Further, the output unit includes an inductor L1, a variable resistor RP2, a resistor R8, a capacitor C7 and a capacitor C8, one end of the inductor L1 is connected to the third pin of the voltage stabilizing chip U2, the other end of the inductor L1 is connected to one end of the variable resistor RP2, one end of the capacitor C7 and one end of the capacitor C8, the other end of the variable resistor RP2 is connected to one end of the resistor R8 and the second pin of the voltage stabilizing chip U2, the other end of the resistor R8 is connected to the cathode of the Schottky diode VD, the other end of the capacitor C7 and the other end of the capacitor C8, and the two ends of the capacitor C8 form the output end of the output unit.

[0010] Furthermore, the relay unit includes a relay K1 and a resistor R7, the coil end of the relay K1 is connected to the third end of the control chip U1, the input end of the relay K1 is connected to one end of the resistor R7, the output end of the relay K1 is connected to the voltage stabilizing unit, and the other end of the resistor R7 is connected to the voltage source unit and the photosensitive control unit.

[0011] Furthermore, it also includes a switch unit, and the photosensitive control unit directly controls the color-changing glass through the switch unit; The switch unit includes a switch K1 , one end of the switch K1 is connected to one end of the resistor R7 , and the other end of the switch K1 is connected to the voltage stabilizing unit.

[0012] Further, the voltage source unit includes a solar panel, a lithium battery, a power management module U2, a capacitor C1, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a switch tube Q1, a switch tube Q2 and a switch tube Q3, the power management module U2 includes a first signal port, a second signal port, a third signal port, a fourth signal port and a fifth signal port, the switch tube Q1, the switch tube Q2 and the switch tube Q3 are transistors, the first signal port of the power management module U2 is connected to the gate of the switch tube Q1 through the resistor R1, the source of the switch tube Q1 is connected to the positive output port of the solar panel, the drain of the switch tube Q1 is connected to the drain of the switch tube Q3 and One end of the capacitor C1 and the other end of the capacitor C1 are connected to the negative input end of the lithium battery, the negative input end of the solar panel, the sensitive control unit and the ground end. The second signal port of the power management module U2 is connected to the source of the switch tube Q2 through the resistor R2, and the gate of the switch tube Q2 is connected to the third signal port of the power management module U2 through the resistor R3. The drain of the switch tube Q2 is connected to one end of the resistor R4, the source of the switch tube Q3 and the positive output end of the lithium battery. The other end of the resistor R4 is connected to the fourth signal port of the power management module U2, and the fifth signal port of the power management module U2 is connected to the gate of the switch tube Q3.

[0013] On the other hand, the present invention further provides an electrochromic glass control method, using the electrochromic glass control circuit as described above, comprising: Obtaining an initial voltage provided by the voltage source unit, and detecting the current ambient light intensity; Convert the detected ambient light intensity into a photosensitive voltage and compare it with a preset light intensity threshold; Adjust the photosensitivity according to the change of the photosensitive voltage; determining a switch state of the relay unit based on the adjusted photosensitive voltage; If the photosensitive voltage is lower than the set threshold, the relay unit is turned on, so that the initial voltage is input to the voltage stabilizing unit through the relay unit; If the photosensitive voltage is higher than the set threshold, the relay unit is disconnected, blocking the voltage source unit from supplying power to the voltage stabilizing unit; When the relay unit is turned on, a voltage stabilization instruction is sent to the voltage stabilization unit, so that the voltage stabilization unit converts the initial voltage into a DC voltage according to a preset adjustment parameter; When the relay unit is turned on, a color-changing glass control instruction is sent to the output unit, so that the output unit outputs the adjusted DC voltage to the electrochromic glass; When the ambient light intensity changes, the photosensitive control unit detects and adjusts the photosensitive voltage again, and repeats the above steps in sequence.

[0014] The embodiment of the present invention controls the voltage output through the photosensitive control unit, so that the light transmittance of the glass can dynamically adapt to the changes in light, thereby improving the accuracy of light regulation; the relay unit is used for circuit isolation to improve the stability and safety of the system; the voltage stabilizing unit converts the initial voltage into a DC voltage to ensure the stability of the output voltage and avoid the influence of voltage fluctuations on the electrochromic glass. The embodiment of the present invention can realize intelligent adjustment under different lighting conditions, ensure more efficient control of light transmittance, and improve user comfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0016] Figure 1 is a structural block diagram of a first embodiment of the present invention; Figure 2 is a structural block diagram of a second embodiment of the present invention; Figure 3 is a circuit diagram of an embodiment of the present invention; Figure 4 It is a flow chart of the electrochromic glass control method of the present invention.

[0017] Reference numerals: 100, voltage source unit; 200, photosensitive control unit; 210, photosensitive voltage dividing module; 220, control module; 300, relay unit; 400, voltage stabilizing unit; 500, output unit; 600, switch unit; DETAILED DESCRIPTION The present invention is further described in detail below in conjunction with the accompanying drawings.

[0018] This specific embodiment is only an explanation of the present invention, and it is not a limitation of the present invention. After reading this specification, those skilled in the art can make non-creative modifications to this embodiment as needed, but as long as it is within the scope of the claims of the present invention, it is protected by the patent law.

[0019] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. First embodiment: Reference Figure 1 The embodiment of the present invention provides an electrochromic glass control circuit, comprising a voltage source unit 100, a photosensitive control unit 200, a relay unit 300, a voltage stabilizing unit 400 and an output unit 500, wherein the photosensitive control unit 200 is connected to the coil end of the relay unit 300, the voltage source unit 100 is connected to the input end of the relay unit 300 and the control end of the photosensitive control unit 200, the output end of the relay unit 300 is connected to the input end of the voltage stabilizing unit 400, and the output end of the voltage stabilizing unit 400 is connected to the input end of the output unit 500; wherein, The voltage source unit 100 is used to provide an initial voltage, the photosensitive control unit 200 is used to adjust the photosensitivity, the relay unit 300 is used to isolate the voltage source unit 100 from the output unit 500, the voltage stabilizing unit 400 is used to convert the initial voltage into a DC voltage, and the output unit 500 is used to adjust the magnitude of the DC voltage and output it to the electrochromic glass.

[0020] The embodiment of the present invention controls the voltage output through the photosensitive control unit 200, so that the light transmittance of the glass can dynamically adapt to the changes in light, thereby improving the accuracy of light regulation; the relay unit 300 is used for circuit isolation to improve the stability and safety of the system; the voltage stabilizing unit 400 converts the initial voltage into a DC voltage to ensure the stability of the output voltage and avoid the influence of voltage fluctuations on the electrochromic glass. The embodiment of the present invention can realize intelligent adjustment under different lighting conditions, ensure more efficient control of light transmittance, and improve user comfort.

[0021] Third embodiment: Reference Figure 2-3 The present invention provides another electrochromic glass control circuit, wherein the structure of the photosensitive control unit 200 is further optimized on the basis of the first embodiment to improve the response accuracy and stability to the change of ambient light intensity. The electrochromic glass control circuit of this embodiment still includes a voltage source unit 100, a photosensitive control unit 200, a relay unit 300, a voltage stabilizing unit 400 and an output unit 500, and the difference lies in the specific composition structure of the photosensitive control unit 200.

[0022] In this embodiment, the photosensitive control unit 200 includes a photosensitive voltage divider module 210 and a control module 220; wherein the photosensitive voltage divider module 210 is used to divide the initial voltage and output a corresponding photosensitive voltage according to the change of the ambient light intensity. The photosensitive voltage divider module 210 is usually composed of a photoresistor and a fixed resistor. When the ambient light intensity changes, the resistance of the photoresistor will also change accordingly, thereby affecting the voltage distribution and generating different photosensitive voltage signals. The photosensitive voltage is transmitted to the control module 220; the control module 220 receives the photosensitive voltage output by the photosensitive voltage divider module 210, and controls the coil end of the relay unit 300 according to the voltage value, so that the relay unit 300 can switch the state in time according to the light conditions, and then adjust the input voltage of the voltage stabilizing unit 400 to realize the intelligent control of the output voltage; this embodiment can detect the change of external light more accurately, and through the voltage division processing of the photosensitive voltage, the circuit response is smoother and more stable, the sudden voltage adjustment is reduced, and the intelligent level of glass transmittance adjustment is improved.

[0023] In one embodiment, the control module 220 includes a control chip U1, a diode D1 and a capacitor C3, the control chip U1 includes a first end, a second end, a third end, a fourth end, a fifth end, a sixth end and an eighth end, the third end of the control chip U1 is connected to the coil end of the relay unit 300 and the anode of the diode D1, the fifth end of the control chip U1 is connected to the photosensitivity voltage divider module 210 through the capacitor C3, the first end of the control chip U1 is connected to the photosensitivity voltage divider module 210, the fourth end and the eighth end of the control chip U1 are connected to the photosensitivity voltage divider module 210 and the output end of the voltage source unit 100.

[0024] This embodiment processes the light-sensitive voltage-dividing signal through the control chip U1 to realize the intelligent control of the relay unit 300, ensuring that the transparency of the electrochromic glass is automatically adjusted with the change of light; the diode D1 prevents the reverse current of the relay coil from damaging the control chip, improving the safety of the system; the capacitor C3 filters to reduce signal noise, avoid false triggering, and improve the adjustment stability and response speed. This embodiment enhances the accuracy of light regulation, makes the glass color change smoother, improves the user experience, and improves the energy saving effect.

[0025] In one embodiment, the photosensitivity voltage divider module 210 includes a variable resistor RP1, a resistor R6, a capacitor C2 and a photoresistor LDR, one end of the photoresistor LDR is connected to the output end of the voltage source unit 100, the fourth end of the control chip U1, the eighth end of the control chip U1 and the cathode of the diode D1, and the other end is connected to one end of the resistor R6 and one end of the variable resistor RP1, the other end of the resistor R6 is connected to one end of the capacitor C2 and the second and sixth ends of the control chip, and the other end of the capacitor C2 is connected to the other end of the variable resistor RP1, the control end of the variable resistor RP1, the fifth end of the control chip U1, the first end of the control chip U1 and the voltage stabilizing unit 400.

[0026] This embodiment realizes the detection of ambient light intensity through the optimized design of the photosensitivity voltage divider module 210; the photoresistor LDR, the variable resistor RP1, the resistor R6 and the capacitor C2 together form a voltage divider network, so that the photosensitivity voltage can be dynamically adjusted according to the change of light; the addition of the variable resistor RP1 enhances the adjustment flexibility, and the photosensitivity voltage threshold can be adjusted according to the demand, thereby improving the adaptability of the system; the capacitor C2 plays a filtering role, reduces signal noise, avoids false triggering due to instantaneous changes in light, ensures that the input signal of the control chip U1 is stable, and improves the accuracy and stability of light adjustment.

[0027] In one embodiment, the voltage stabilizing unit 400 includes a voltage stabilizing chip U2, a Schottky diode VD, a capacitor C4, a capacitor C5 and a capacitor C6. The voltage stabilizing chip U2 includes a first pin, a second pin, a third pin, a fourth pin and a fifth pin. One end of the capacitor C4 is connected to the output end of the relay unit 300, the fifth pin of the voltage stabilizing chip U2, one end of the capacitor C5 and one end of the capacitor C6. The other end of the capacitor C4 is connected to the other end of the capacitor C5, the first pin of the voltage stabilizing chip U2, the cathode of the Schottky diode VD and the output unit 500. The other end of the capacitor C6 is connected to the fourth pin of the voltage stabilizing chip U2. The third pin of the voltage stabilizing chip U2 is connected to the anode of the Schottky diode VD and the output unit 500. The second pin of the voltage stabilizing chip U2 is connected to the output unit 500.

[0028] In this embodiment, the voltage stabilizing chip U2 is combined with the Schottky diode VD to effectively prevent the influence of reverse current on the circuit and improve the system reliability; the capacitors C4, C5 and C6 play a filtering and voltage stabilizing role, reduce voltage fluctuations and interference, make the output voltage more stable, and avoid abnormal glass color adjustment due to voltage instability; this embodiment enhances the stability and durability of the electrochromic glass control circuit, improves user experience, and optimizes energy saving effects.

[0029] In one embodiment, the output unit 500 includes an inductor L1, a variable resistor RP2, a resistor R8, a capacitor C7 and a capacitor C8, one end of the inductor L1 is connected to the third pin of the voltage stabilizing chip U2, the other end of the inductor L1 is connected to one end of the variable resistor RP2, one end of the capacitor C7 and one end of the capacitor C8, the other end of the variable resistor RP2 is connected to one end of the resistor R8 and the second pin of the voltage stabilizing chip U2, the other end of the resistor R8 is connected to the cathode of the Schottky diode VD, the other end of the capacitor C7 and the other end of the capacitor C8, and the two ends of the capacitor C8 form the output end of the output unit 500.

[0030] In one embodiment, the inductor L1 and the capacitors C7 and C8 form a filtering circuit to effectively reduce the ripple and noise of the output voltage and ensure smoother regulation of the electrochromic glass; the variable resistor RP2 can adjust the output voltage according to demand, enhance the adaptability of the system, and make the glass transparency adjustment more precise; the resistor R8 cooperates with the Schottky diode VD to improve the circuit's anti-interference ability and prevent voltage fluctuations from affecting the glass color change effect.

[0031] In one embodiment, the relay unit 300 includes a relay K1 and a resistor R7, the coil end of the relay K1 is connected to the third end of the control chip U1, the input end of the relay K1 is connected to one end of the resistor R7, the output end of the relay K1 is connected to the voltage stabilizing unit 400, and the other end of the resistor R7 is connected to the voltage source unit 100 and the photosensitive control unit 200.

[0032] In this embodiment, the relay K1 is driven by the control chip U1 and automatically switches according to the signal of the photosensitive control unit 200 to achieve precise control of the voltage stabilizing unit 400 and ensure the stability of the transparency adjustment of the electrochromic glass; the resistor R7 is used for current limiting to prevent excessive current from damaging the relay and improve the durability of the system.

[0033] In one embodiment, a switch unit 600 is further included, and the photosensitive control unit 200 directly controls the photochromic glass through the switch unit 600; The switch unit 600 includes a switch K1 , one end of the switch K1 is connected to one end of the resistor R7 , and the other end of the switch K1 is connected to the voltage stabilizing unit 400 .

[0034] In this embodiment, by adding a switch unit 600, the photosensitive control unit 200 can directly control the electrochromic glass, thereby improving the response speed and adjustment flexibility; the switch K1 simplifies the control process, improves the system reliability, and can bypass the relay unit 300 in certain circumstances to achieve faster transparency adjustment.

[0035] In one embodiment, the voltage source unit 100 includes a solar panel, a lithium battery, a power management module U2, a capacitor C1, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a switch tube Q1, a switch tube Q2 and a switch tube Q3, the power management module U2 includes a first signal port, a second signal port, a third signal port, a fourth signal port and a fifth signal port, the switch tube Q1, the switch tube Q2 and the switch tube Q3 are transistors, the first signal port of the power management module U2 is connected to the gate of the switch tube Q1 through the resistor R1, the source of the switch tube Q1 is connected to the positive output port of the solar panel, and the drain of the switch tube Q1 is connected to the switch tube Q3 The drain of the power management module U2 is connected to one end of the resistor R4, the source of the switch tube Q3 and the positive output end of the lithium battery, the other end of the resistor R4 is connected to the fourth signal port of the power management module U2, and the fifth signal port of the power management module U2 is connected to the gate of the switch tube Q3.

[0036] In the embodiment, the solar panels provide clean energy and the lithium batteries store electrical energy to ensure stable power supply even when the light is insufficient. The power management module U2 dynamically controls the input and output of the power supply through the switch tubes Q1, Q2, Q3 and related resistors and capacitors to achieve efficient conversion and distribution of electrical energy, improve system stability, reduce dependence on external power supplies, and improve the intelligence level and long-term operation capability of the circuit.

[0037] Preferably, the control chip is a 555 timer from Signetics; the voltage stabilizing chip is XL4016; this embodiment uses a 555 timer from Signetics as the control chip, and utilizes its high stability and multi-functional timing control capabilities to achieve precise driving of the relay unit 300, thereby ensuring the sensitivity and reliability of transparency adjustment of the electrochromic glass; and the 555 timer has a strong anti-interference capability, which can improve the response speed of the system and reduce false triggering caused by light fluctuations; the voltage stabilizing chip is XL4016, which has a high-efficiency step-down and voltage stabilization capability, and can stably output a large current, thereby ensuring that the electrochromic glass can obtain a stable driving voltage under different load conditions, and the high conversion efficiency of XL4016 reduces energy consumption, thereby improving the energy saving and long-term operation stability of the system.

[0038] Reference Figure 4The present invention also provides an electrochromic glass control method, using the electrochromic glass control circuit as described above, comprising: S1: Obtaining the initial voltage provided by the voltage source unit 100 and detecting the current ambient light intensity; In step S1, the voltage source unit 100 provides an initial voltage to ensure that the entire electrochromic glass control circuit is in normal working condition. At the same time, the photosensitive control unit 200 starts to detect the ambient light intensity, and the resistance of the photoresistor LDR changes with the change of light intensity. Under strong light conditions, the resistance of the photoresistor decreases, while under weak light conditions, its resistance increases; this feature enables the photosensitive control unit 200 to sense the changes in the light intensity of the external environment, providing data support for subsequent voltage regulation and glass transmittance control.

[0039] S2: convert the detected ambient light intensity into a photosensitive voltage and compare it with a preset light intensity threshold; The photoresistor LDR, the variable resistor RP1, the resistor R6 and other components form a photosensitive voltage divider module 210. When the ambient light intensity changes, the change in the resistance of the photoresistor will affect the voltage division result, thereby outputting different photosensitive voltages; the photosensitive voltage represents the current lighting conditions and is transmitted to the input end of the control chip U1; after receiving the photosensitive voltage, the control chip U1 will compare it with the preset light intensity threshold to determine whether the transparency of the electrochromic glass needs to be adjusted under the current lighting conditions; the preset light intensity threshold is a critical value set according to user needs or environmental conditions. For example, when the photosensitive voltage is lower than the threshold, it means that the ambient light is dark and the glass transmittance may need to be increased. When the photosensitive voltage is higher than the threshold, the transmittance may need to be reduced to reduce the indoor light intensity or glare.

[0040] S3: Adjusting the photosensitivity according to the change of the photosensitivity voltage; The purpose of step S3 is to ensure that the photosensitive control unit 200 can accurately sense different lighting conditions and optimize the response characteristics. Due to the different amplitudes and rates of illumination changes in different scenarios, the photosensitivity of the photosensitive control unit 200 may need to be dynamically adjusted to adapt to different environmental requirements. For example, under rapidly changing lighting conditions (such as cloudy and sunny weather), the system can increase the photosensitivity, making the circuit more sensitive to lighting changes and quickly adjusting the transparency of the glass; while in a stable lighting environment (such as indoor lighting), the photosensitivity can be reduced to reduce unnecessary frequent adjustments and improve user experience. This adjustment can be achieved by changing the resistance value of the variable resistor RP1 or by controlling the internal calculation method of the chip U1, so that the photosensitive control unit 200 can maintain a reasonable lighting response speed and accuracy in different application scenarios, thereby improving the intelligence level and reliability of the entire electrochromic glass control system.

[0041] S4: Determine the switch state of the relay unit 300 based on the adjusted photosensitive voltage; In steps S1-S3, the photosensitive control unit 200 has obtained the ambient light information and adjusted the photosensitivity so that it can adapt to different lighting conditions; on this basis, the task of step S4 is to use the adjusted photosensitive voltage to determine the working state of the relay unit 300. The control chip U1 reads the photosensitive voltage and compares it with the preset light intensity threshold. If the photosensitive voltage is lower than the set threshold (i.e., the ambient light is dark), it means that the light transmittance of the glass needs to be increased, and the relay unit 300 should be turned on to allow the voltage source unit 100 to supply power to the voltage stabilizing unit 400; conversely, if the photosensitive voltage is higher than the set threshold (i.e., the ambient light is strong), the glass needs to reduce the light transmittance, and the relay unit 300 should be turned off to prevent the voltage from being transmitted to the voltage stabilizing unit 400. This logical judgment determines the working state of the relay unit 300, thereby affecting the subsequent voltage adjustment and the color change control of the glass.

[0042] S5: If the photosensitive voltage is lower than the set threshold, the relay unit 300 is turned on, so that the initial voltage is input to the voltage stabilizing unit 400 through the relay unit 300; In step S5, if the photosensitive voltage is lower than the set threshold, that is, the external light is weak, the electrochromic glass needs to increase the light transmittance to enhance indoor lighting. At this time, the control chip U1 will output a control signal to the coil end of the relay K1, so that the relay is energized and the circuit is turned on; the conduction of the relay K1 allows the initial voltage of the voltage source unit 100 to flow to the voltage stabilizing unit 400, thereby entering the next step of the voltage adjustment process. After receiving the input voltage, the voltage stabilizing unit 400 will convert it into a suitable DC voltage according to the subsequent adjustment parameters to provide it to the output unit 500, so that the glass gradually returns to a transparent state. This process ensures that when the light is low, the system can respond quickly and increase the indoor light transmittance, thereby optimizing the lighting effect and improving user comfort, while reducing the demand for artificial lighting and achieving energy saving.

[0043] S6: If the photosensitive voltage is higher than the set threshold, the relay unit 300 is disconnected, and the voltage source unit 100 is blocked from supplying power to the voltage stabilizing unit 400; In step S6, if the photosensitive voltage is higher than the set threshold, it means that the external light is strong, and the electrochromic glass needs to reduce the transmittance to reduce the indoor light intensity or reduce glare interference. At this time, the control chip U1 will output a corresponding signal to disconnect the relay K1. The disconnection of relay K1 will cut off the power supply path from the voltage source unit 100 to the voltage stabilizing unit 400, which means that the voltage stabilizing unit 400 cannot obtain the input voltage, thereby stopping the supply of the regulated voltage to the output unit 500; in the absence of voltage input, the color of the electrochromic glass will gradually deepen, thereby reducing the light transmittance and dimming the indoor light. Through this mechanism, the system can intelligently reduce the transparency of the glass when the light is strong to protect the indoor environment from excessive light, while reducing the burden of air conditioning and refrigeration, and improving overall energy saving efficiency.

[0044] S7: When the relay unit 300 is turned on, a voltage stabilization instruction is sent to the voltage stabilization unit 400, so that the voltage stabilization unit 400 converts the initial voltage into a DC voltage according to a preset adjustment parameter; In the preceding step S5, if the photosensitive voltage is lower than the set threshold, the relay unit 300K1 is turned on, so that the initial voltage of the voltage source unit 100 enters the voltage stabilizing unit 400; and in step S7, the control chip U1 sends a voltage stabilizing instruction to the voltage stabilizing unit 400, so that the voltage stabilizing unit 400 adjusts the input initial voltage; since the output of the voltage source unit 100 may fluctuate, directly providing it to the electrochromic glass may affect the color change effect, so the voltage stabilizing unit 400 (such as XL4016) will convert the input voltage into a stable DC voltage according to the preset adjustment parameters; the adjustment parameters can be set according to the working voltage required by the glass, for example, the amplitude of the output voltage is adjusted through the internal feedback circuit to ensure that the adjustment of the transparency of the glass is more stable. The core function of this step is to ensure that the voltage supplied to the glass is stable and controllable, and to improve the color change accuracy and reliability of the electrochromic glass.

[0045] S8: When the relay unit 300 is turned on, a color-changing glass control instruction is sent to the output unit 500, so that the output unit 500 outputs the adjusted DC voltage to the electrochromic glass; After the voltage stabilizing unit 400 completes the conversion of the initial voltage, the task of step S8 is to transmit the adjusted DC voltage to the electrochromic glass to control its light transmittance; the control chip U1 will send a color-changing glass control instruction to the output unit 500, so that the voltage after voltage stabilization can be smoothly output to the glass; the output unit 500 includes components such as inductor L1, variable resistor RP2, resistor R8, and capacitors C7 and C8, which are used to further smooth the voltage output and reduce the impact of voltage fluctuations on the glass color change process. Inductor L1 plays a filtering role, and variable resistor RP2 allows the voltage to be adjusted to suit different glass characteristics or usage requirements; through this process, the system can automatically increase the transparency of the glass when the light is low, allowing more natural light to enter the room, achieving energy saving and comfort improvement.

[0046] S9: When the ambient light intensity changes, the photosensitive control unit 200 detects and adjusts the photosensitive voltage again, and repeats the above steps in sequence.

[0047] The function of step S9 is to realize the real-time detection and dynamic adjustment of illumination changes to ensure that the transparency of electrochromic glass always meets the environmental requirements; since the ambient light intensity is constantly changing, for example, the illumination may gradually increase during the day and gradually decrease at night, or sudden changes may occur due to factors such as clouds and building shielding, the photosensitive control unit 200 needs to continuously monitor the illumination conditions. When a change in the photosensitive voltage is detected, the system will re-execute steps S1-S8, including obtaining new ambient light data, adjusting the photosensitivity, controlling the switch state of the relay unit 300, stabilizing the voltage and outputting the voltage, etc. This ensures that the light transmittance of the glass always matches the ambient light, avoids the discomfort of too high or too low brightness, and improves the user experience; at the same time, this cyclic execution mode enables the system to maintain the best energy-saving state in different weather and different time periods, such as reducing the light transmittance of the glass when the sun is sufficient to reduce the air conditioning load, and increasing the transparency when the light is weak to reduce the demand for artificial lighting.

[0048] The above is only used to illustrate the technical solution of the present invention rather than to limit it. Other modifications or equivalent substitutions made to the technical solution of the present invention by ordinary technicians in this field should be included in the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solution of the present invention.

Claims

1. An electrochromic glass control circuit, characterized in that: The invention comprises a voltage source unit (100), a photosensitive control unit (200), a relay unit (300), a voltage stabilizing unit (400) and an output unit (500), wherein the photosensitive control unit (200) is connected to the coil end of the relay unit (300), the voltage source unit (100) is connected to the input end of the relay unit (300) and the control end of the photosensitive control unit (200), the output end of the relay unit (300) is connected to the input end of the voltage stabilizing unit (400), and the output end of the voltage stabilizing unit (400) is connected to the input end of the output unit (500); wherein: The voltage source unit (100) is used to provide an initial voltage, the photosensitive control unit (200) is used to adjust the photosensitivity, the relay unit (300) is used to isolate the voltage source unit (100) from the output unit (500), the voltage stabilizing unit (400) is used to convert the initial voltage into a direct current voltage, and the output unit (500) is used to adjust the magnitude of the direct current voltage and output it to the electrochromic glass.

2. The electrochromic glass control circuit according to claim 1, characterized in that: The photosensitive control unit (200) comprises a photosensitive voltage-dividing module (210) and a control module (220); the photosensitive voltage-dividing module (210) is used to output the photosensitive voltage after the initial voltage is divided to the control module (220); and the control module (220) is used to control the coil end of the relay unit (300) according to the photosensitive voltage.

3. The electrochromic glass control circuit according to claim 2, characterized in that: The control module (220) comprises a control chip U1, a diode D1 and a capacitor C3; the control chip U1 comprises a first end, a second end, a third end, a fourth end, a fifth end, a sixth end and an eighth end; the third end of the control chip U1 is connected to the coil end of the relay unit (300) and the anode of the diode D1; the fifth end of the control chip U1 is connected to the photosensitive voltage divider module (210) via the capacitor C3; the first end of the control chip U1 is connected to the photosensitive voltage divider module (210); the fourth end and the eighth end of the control chip U1 are connected to the photosensitive voltage divider module (210) and the output end of the voltage source unit (100).

4. The electrochromic glass control circuit according to claim 3, characterized in that: The photosensitive voltage-dividing module (210) comprises a variable resistor RP1, a resistor R6, a capacitor C2 and a photoresistor LDR; one end of the photoresistor LDR is connected to the output end of the voltage source unit (100), the fourth end of the control chip U1, the eighth end of the control chip U1 and the cathode of the diode D1; the other end is connected to one end of the resistor R6 and one end of the variable resistor RP1; the other end of the resistor R6 is connected to one end of the capacitor C2 and the second end and the sixth end of the control chip; the other end of the capacitor C2 is connected to the other end of the variable resistor RP1, the control end of the variable resistor RP1, the fifth end of the control chip U1, the first end of the control chip U1 and the voltage stabilizing unit (400).

5. The electrochromic glass control circuit according to claim 1, characterized in that: The voltage stabilizing unit (400) comprises a voltage stabilizing chip U2, a Schottky diode VD, a capacitor C4, a capacitor C5 and a capacitor C6; the voltage stabilizing chip U2 comprises a first pin, a second pin, a third pin, a fourth pin and a fifth pin; one end of the capacitor C4 is connected to the output end of the relay unit (300), the fifth pin of the voltage stabilizing chip U2, one end of the capacitor C5 and one end of the capacitor C6; the other end of the capacitor C4 is connected to the other end of the capacitor C5, the first pin of the voltage stabilizing chip U2, the cathode of the Schottky diode VD and the output unit (500); the other end of the capacitor C6 is connected to the fourth pin of the voltage stabilizing chip U2; the third pin of the voltage stabilizing chip U2 is connected to the anode of the Schottky diode VD and the output unit (500); and the second pin of the voltage stabilizing chip U2 is connected to the output unit (500).

6. The electrochromic glass control circuit according to claim 5, characterized in that: The output unit (500) comprises an inductor L1, a variable resistor RP2, a resistor R8, a capacitor C7 and a capacitor C8, one end of the inductor L1 is connected to the third pin of the voltage stabilizing chip U2, the other end of the inductor L1 is connected to one end of the variable resistor RP2, one end of the capacitor C7 and one end of the capacitor C8, the other end of the variable resistor RP2 is connected to one end of the resistor R8 and the second pin of the voltage stabilizing chip U2, the other end of the resistor R8 is connected to the cathode of the Schottky diode VD, the other end of the capacitor C7 and the other end of the capacitor C8, and the two ends of the capacitor C8 form the output end of the output unit (500).

7. The electrochromic glass control circuit according to any one of claims 1 to 6, characterized in that: The relay unit (300) comprises a relay K1 and a resistor R7, the coil end of the relay K1 is connected to the third end of the control chip U1, the input end of the relay K1 is connected to one end of the resistor R7, the output end of the relay K1 is connected to the voltage stabilizing unit (400), and the other end of the resistor R7 is connected to the voltage source unit (100) and the photosensitive control unit (200).

8. The electrochromic glass control circuit according to claim 7, characterized in that: It also includes a switch unit (600), and the photosensitive control unit (200) directly controls the color-changing glass via the switch unit (600); The switch unit (600) comprises a switch K1, one end of the switch K1 being connected to one end of the resistor R7, and the other end of the switch K1 being connected to the voltage stabilizing unit (400).

9. The electrochromic glass control circuit according to claim 8, characterized in that: The voltage source unit (100) comprises a solar panel, a lithium battery, a power management module U2, a capacitor C1, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a switch tube Q1, a switch tube Q2 and a switch tube Q3, the power management module U2 comprises a first signal port, a second signal port, a third signal port, a fourth signal port and a fifth signal port, the switch tube Q1, the switch tube Q2 and the switch tube Q3 are transistors, the first signal port of the power management module U2 is connected to the gate of the switch tube Q1 through the resistor R1, the source of the switch tube Q1 is connected to the positive output port of the solar panel, and the drain of the switch tube Q1 is connected to the drain of the switch tube Q3. and one end of the capacitor C1, the other end of the capacitor C1 is connected to the negative input end of the lithium battery, the negative input end of the solar panel, the sensitive control unit and the ground end, the second signal port of the power management module U2 is connected to the source of the switch tube Q2 through the resistor R2, the gate of the switch tube Q2 is connected to the third signal port of the power management module U2 through the resistor R3, the drain of the switch tube Q2 is connected to one end of the resistor R4, the source of the switch tube Q3 and the positive output end of the lithium battery, the other end of the resistor R4 is connected to the fourth signal port of the power management module U2, and the fifth signal port of the power management module U2 is connected to the gate of the switch tube Q3.

10. An electrochromic glass control method, using the electrochromic glass control circuit as claimed in claim 1, characterized in that: include: Obtaining an initial voltage provided by the voltage source unit (100), and detecting the current ambient light intensity; Convert the detected ambient light intensity into a photosensitive voltage and compare it with a preset light intensity threshold; Adjust the photosensitivity according to the change of the photosensitive voltage; Determining the switch state of the relay unit (300) based on the adjusted photosensitive voltage; If the photosensitive voltage is lower than a set threshold, the relay unit (300) is turned on, so that the initial voltage is input to the voltage stabilizing unit (400) through the relay unit (300); If the photosensitive voltage is higher than a set threshold, the relay unit (300) is disconnected, and the voltage source unit (100) is blocked from supplying power to the voltage stabilizing unit (400); When the relay unit (300) is turned on, a voltage stabilization instruction is sent to the voltage stabilization unit (400), so that the voltage stabilization unit (400) converts the initial voltage into a direct current voltage according to a preset adjustment parameter; When the relay unit (300) is turned on, a color-changing glass control instruction is sent to the output unit (500), so that the output unit (500) outputs the adjusted direct current voltage to the electrochromic glass; When the ambient light intensity changes, the photosensitive control unit (200) detects and adjusts the photosensitive voltage again, and repeats the above steps in sequence.

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