Switching system and lighting device
The switching system using optical signal communication enables synchronous control of LED strip lights, solving the problem of direct electrical connection of LED strip lights and improving installation convenience and aesthetics.
Patent Information
- Application Number
- CN202520022374.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-06
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2035-01-06
AI Technical Summary
In the deployment of LED products, it is difficult to achieve synchronous control because the light strips cannot be directly electrically connected. Existing technologies solve this problem by removing the structure or adding wiring, but this increases costs and affects aesthetics.
The switching system using optical signal communication controls the lighting module in the second control circuit through the first control circuit and the photosensitive switch module, and achieves synchronous control by using the light signal emitted by the lighting module.
It enables synchronous control of lighting modules in different control circuits, avoiding structural dismantling and reducing wiring, thus improving installation convenience and product neatness and aesthetics.
Smart Images
Figure CN223899370U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present disclosure relates to the technical field of electronic circuit, and particularly relates to a switching system and a lighting device. BACKGROUND
[0002] In the layout of some LED products, due to the limitation of product structure, the light strips cannot be directly electrically connected, which leads to difficulty in realizing the synchronous control of the light strips.
[0003] In the prior art, in order to solve the above problem, the operation of removing part of the structure in the product, increasing the wiring amount and the like is generally adopted. However, the operation will increase the layout cost and is not conducive to improving the neatness and aesthetics of the product. CONTENT OF THE UTILITY MODEL
[0004] The present disclosure aims to provide a switching system and a lighting device to solve at least one of the above technical problems. The scheme provided by the embodiments of the present disclosure is as follows:
[0005] In a first aspect, the present disclosure provides a switching system, comprising a first control circuit and at least one second control circuit in communication with the first control circuit through optical signals;
[0006] The first control circuit is connected with a first lighting module;
[0007] The second control circuit is configured with a photosensitive switch module, which is used to control a second lighting module connected thereto through the photosensitive switch module; and the photosensitive switch module is used to receive optical signals emitted by the first lighting module.
[0008] In a feasible embodiment, the first control circuit comprises a first power supply module, a first control module, a first driving module and at least one sensor switch module;
[0009] The first end of the first control module is connected with the output end of the first power supply module, the second end of the first control module is connected with the sensor switch module, the input end of the first driving module is connected with the third end of the first control module, and the output end of the first driving module is connected with the first lighting module.
[0010] In a feasible embodiment, the first driving module comprises a first MOS tube, and the first MOS tube comprises a control electrode, a first electrode and a second electrode;
[0011] The control electrode of the first MOS tube is connected with the third end of the first control module, the first electrode of the first MOS tube is connected with the first lighting module, and the second electrode of the first MOS tube is grounded.
[0012] In an embodiment, the second control circuit comprises a second power supply module, a second control module, and a second driving module; the photosensitive switch module comprises a photosensitive triode, a first end of the photosensitive triode is connected with the second control module and an output end of the second power supply module, an emitter of the photosensitive triode is grounded, and a base of the photosensitive triode is used for receiving a light signal emitted by the first lighting module.
[0013] In an embodiment, the photosensitive switch module further comprises a triode, a first capacitor, a first resistor, a second resistor, and a third resistor.
[0014] The base of the triode is connected with the emitter of the photosensitive triode and a first end of the third resistor, the collector is connected with a second end of the second control module, a second end of the second resistor, and a first end of the first capacitor, and the emitter is connected with a second end of the first capacitor and grounded.
[0015] The first end of the first resistor is connected with the output end of the second power supply module and the first end of the second control module, and the second end is connected with the collector of the photosensitive triode.
[0016] The first end of the second resistor is connected with the first end of the second control module.
[0017] The second end of the third resistor is grounded.
[0018] In an embodiment, the second driving module comprises a second MOS tube, the second MOS tube comprises a control pole, a first pole, and a second pole.
[0019] The control pole of the second MOS tube is connected with the output end of the second control module, the first pole of the second MOS tube is connected with the second lighting module, and the second pole of the second MOS tube is grounded.
[0020] In an embodiment, the second driving module further comprises a fourth resistor and a fifth resistor.
[0021] The first end of the fourth resistor is connected with the output end of the second control module and the first end of the fifth resistor, and the second end of the fourth resistor is grounded.
[0022] The second end of the fifth resistor is connected with the control pole of the second MOS tube.
[0023] In an embodiment, the first lighting module and the second lighting module comprise N LEDS; the positive poles of the N LEDS are connected with a power supply, and the negative poles are connected with driving modules in corresponding circuits.
[0024] When N is greater than or equal to 2, the LEDs are cascaded and the positive terminal of the Mth LED among the N LEDs is connected to the negative terminal of the (M+1)th LED.
[0025] In one feasible embodiment, the power supply module in the first control circuit and the second control circuit includes a second capacitor, a third capacitor, a fourth capacitor, a diode, and an LDO chip;
[0026] The positive terminal of the diode is connected to the power supply and the first terminal of the second capacitor; the negative terminal of the diode is connected to the first terminal of the third capacitor and the input terminal of the LDO chip.
[0027] The output terminal of the LDO chip is connected to the first terminal of the fourth capacitor and the control module in the first control circuit or the second control circuit.
[0028] The second terminal of the second capacitor, the second terminal of the third capacitor, the ground terminal of the LDO chip, and the second terminal of the fourth capacitor are all grounded.
[0029] In a second aspect, this disclosure provides a lighting device, including a switching system provided in the first aspect and any embodiment thereof, a first lighting module and at least one second lighting module;
[0030] The first lighting module is connected to the first control circuit; each of the second lighting modules is connected to the corresponding second control circuit.
[0031] Compared with the prior art, the solution disclosed herein has the following advantages:
[0032] This disclosure provides a switching system and a lighting device, specifically including a first control circuit and at least one second control circuit that communicates with the first control circuit via an optical signal. The first control circuit is connected to a first lighting module; the second control circuit is equipped with a photosensitive switch module for controlling the second lighting module connected to it; the photosensitive switch module receives the optical signal emitted by the first lighting module. This disclosure uses the light emitted by the lighting module as a control signal to achieve synchronous control of lighting modules in different control circuits, avoiding the need to dismantle the product structure and reducing wiring, thus improving installation convenience and the overall neatness and aesthetics of the product.
[0033] Additional aspects and advantages of this disclosure will be set forth in part in the description which follows, and will become apparent from the description or may be learned by practice of this disclosure. Attached Figure Description
[0034] The above and / or additional aspects and advantages of this disclosure will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, in which:
[0035] Figure 1 This is a schematic diagram of the circuit structure of a switching system provided in an embodiment of the present disclosure;
[0036] Figure 2 This is a schematic diagram of the structure of a first control circuit provided in an embodiment of the present disclosure;
[0037] Figure 3 This is a schematic diagram of the structure of a second control circuit provided in an embodiment of the present disclosure. Detailed Implementation
[0038] The embodiments of this disclosure are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this disclosure, and should not be construed as limiting this disclosure.
[0039] The following is combined with Figures 1 to 3 The specific structure of the switching system provided in this disclosure is described.
[0040] The switching system provided in this embodiment includes a first control circuit and at least one second control circuit that communicates with the first control circuit via optical signals.
[0041] In one example, the first control circuit, acting as a circuit that emits an optical signal, can be configured with multiple second control circuits that receive the optical signal as a control signal; that is, multiple second control circuits can be controlled by the first control circuit. In another example, the second control circuit can also emit optical signals for other control circuits; for example, it can include several cascaded second control circuits that communicate via optical signals.
[0042] Optional, such as Figure 1 As shown, the first control circuit is connected to a first lighting module; the second control circuit is equipped with a photosensitive switch module, which can receive light signals emitted by the first lighting module; based on this, the second control circuit can control the second lighting module connected to it through the photosensitive switch module. For example, when the first lighting module is lit, the photosensitive switch module receives the light signal, transmits it to the second control circuit for processing, and drives the second lighting module to light up.
[0043] The specific structure of the first control circuit provided in the embodiments of this disclosure will be described below.
[0044] In one feasible embodiment, such as Figure 1As shown, the first control circuit may include a first power supply module, a first control module, a first drive module, and at least one sensor switch module. Specifically, the first terminal (interface 1 of U3) of the first control module is connected to the output terminal of the first power supply module, the second terminal (interface 3 of U3) of the first control module is connected to the sensor switch module, the third terminal (interface 7 of U3) of the first control module is connected to the input terminal of the first drive module, and the output terminal of the first drive module is connected to the first lighting module.
[0045] Optional, such as Figure 2 As shown, the first power supply module includes diode D9, LDO chip U4, capacitors C1, C4, and C3. The anode of diode D9 is connected to the power supply and the first terminal of capacitor C1. The cathode of diode D9 is connected to the first terminal of capacitor C4 and the output terminal IN of LDO chip U4. The output terminal OUT of LDO chip U4 is connected to the first terminal of capacitor C3 and the first terminal (interface 1 of U3) of the first control module. The second terminals of capacitors C1 and C4, the ground terminal GND of LDO chip U4, and the second terminal of capacitor C3 are all grounded.
[0046] In one example, the LDO chip U4 can be a three-terminal integrated voltage regulator chip 78L05. In this embodiment of the disclosure, the first power supply module configures an LDO buck circuit through the LDO chip U4, which can provide an implementation basis for the stable operation of the entire circuit.
[0047] Optionally, the first control module may include chip U3, which, in addition to the interface connection relationship shown in the above embodiments, also includes grounding interface 8 of chip U3.
[0048] Optional, such as Figure 2 As shown, the first driving module includes a first MOSFET Q3. The control electrode of the first MOSFET Q3 is connected to the interface 7 of the chip U3. The first electrode of the first MOSFET Q3 is connected to the first lighting module, and the second electrode of the first MOSFET Q3 is grounded.
[0049] In one example, the first drive module further includes resistors R6 and R5, wherein the first end of resistor R6 is connected to interface 7 of chip U3 and the first end of resistor R5; the second end of resistor R6 is grounded. The second end of resistor R5 is connected to the control electrode of the first MOSFET Q3.
[0050] Optionally, the sensor switch module may include modules corresponding to various sensor switches; the sensor switches may include infrared sensing switches, non-contact reflective sensing switches, proximity switches, photosensitive switches, etc.
[0051] In one example, when the sensor switch module is equipped with a photosensitive switch, the first control circuit can be regarded as a control circuit that uses the light signal as the control signal.
[0052] Optional, such as Figure 2 As shown, the first lighting module includes N LEDs. The positive terminal of each LED is connected to the power supply, and the negative terminal is connected to the first terminal of a MOSFET. In one example, when N is greater than or equal to 2, as shown... Figure 2 As shown, LEDs D6, D7, and D8 are cascaded, with the positive terminal of LED D7 connected to the negative terminal of LED D8.
[0053] Optionally, the first lighting module also includes a series resistor R9, one end of which is connected to the power supply, and the other end is connected to the positive terminal of the light-emitting diode (such as the positive terminal of the first-order light-emitting diode D6). The resistor R9 can provide current limiting protection, and correspondingly, it can also help stabilize the circuit's operating state, preventing unstable LED brightness or damage due to current fluctuations.
[0054] The specific structure of the second control circuit provided in the embodiments of this disclosure will be described below.
[0055] In one feasible embodiment, such as Figure 1 As shown, the second control circuit includes a second power supply module, a second control module, a second drive module, and a photosensitive switch module.
[0056] Optional, such as Figure 3 As shown, the photosensitive switch module includes a phototransistor D1. The collector of phototransistor D1 is connected to the first terminal of the second control module (such as interface 1 of U1) and the output terminal of the second power supply module; the emitter of phototransistor D1 is grounded; and the base of phototransistor D1 is used to receive the light signal emitted by the first illumination module.
[0057] Optionally, the photosensitive switch module also includes a transistor D2, a capacitor C5, and resistors R1, R2, and R3. The base of transistor D2 is connected to the emitter of phototransistor D1 and the first terminal of resistor R2. The collector of transistor D2 is connected to the second terminal of resistor R3, the second terminal of the second control module (e.g., interface 2 of chip U2), and the first terminal of capacitor C5. The emitter of transistor D2 and the second terminal of capacitor C5 are grounded. The first terminal of resistor R1 is connected to the output terminal of the first drive module, the first terminal of resistor R3, and the first terminal of the second control module (e.g., interface 1 of chip U1). The second terminal of resistor R1 is connected to the collector of the photodiode. The second terminal of resistor R2 is grounded. In one example, transistor D2 can be a 9014 type transistor.
[0058] Optionally, the second power supply module can adopt the same circuit layout as the first power supply module in the above embodiments. In one example, such as Figure 3As shown, the second power supply module may include diode D1, LDO chip U2, capacitors C2, C6, and C9. The anode of diode D1 is connected to the power supply and the first terminal of capacitor C2; the cathode of diode D1 is connected to the first terminal of capacitor C6 and the input terminal IN of LDO chip U2. The output terminal of LDO chip U2 is connected to the first terminal of capacitor C9 and the first terminal of the second control module (such as interface 1 of chip U1); the ground terminal of LDO chip U2 is grounded to the second terminals of capacitors C2, C6, and C9.
[0059] Optionally, the second control module may include chip U1, which, in addition to the interface connection relationship shown in the above embodiments, also includes grounding interface 8 of chip U1.
[0060] Optional, such as Figure 3 As shown, the second driving module includes a second MOSFET Q1. The control electrode of the second MOSFET Q1 is connected to the third terminal of the second control module (such as interface 7 of chip U1), the first electrode of the second MOSFET Q1 is connected to the second lighting module, and the second electrode of the second MOSFET Q1 is grounded.
[0061] In one example, the second drive module also includes resistors R7 and R8. The first end of resistor R7 is connected to the third end of the second control module (such as interface 7 of chip U1) and the first end of resistor R8; the second end of resistor R7 is grounded; and the second end of resistor R8 is connected to the control electrode of the second MOSFET Q1.
[0062] Optionally, the second lighting module may include several LEDs, with the positive terminal of the LED connected to the power supply and the negative terminal of the LED connected to the first terminal of the second MOSFET Q1.
[0063] In one example, the LEDs in the second lighting module may include at least two, and when at least two LEDs are included, the LEDs are cascaded and the negative terminal of the previous LED is connected to the positive terminal of the next LED.
[0064] Optionally, the second lighting module also includes a series resistor R4, one end of which is connected to the power supply, and the other end is connected to the positive terminal of the LED (such as the positive terminal of the light-emitting diode D4). The resistor R4 can provide current limiting protection, and correspondingly, it can also help stabilize the circuit's operating state, preventing unstable LED brightness or damage due to current fluctuations.
[0065] This disclosure also provides a lighting device, which may include the switching system described in the above embodiments, a first lighting module, and at least one second lighting module. The first lighting module is connected to a first control circuit, and each second lighting module is connected to a corresponding second control circuit.
[0066] In one example, the lighting fixture could be a bathroom mirror that includes at least two light strips, such as... Figure 2 and Figure 3 As shown, one light strip A can act as the main body for emitting light signals, while the other light strip B can act as the main body for receiving and controlling light signals. In a feasible application example, when the user switches or dims light strip A via a sensor switch, light strip A emits light signals through LEDs and simultaneously provides illumination; correspondingly, a photosensitive switch (such as phototransistor D1) receives the light carrier signal from light strip A, processes it through chip U1, and outputs the same PWM signal as light strip A to drive light strip B, thereby achieving synchronous dimming or switching functions.
[0067] The implementation of this disclosure uses the light emitted by the lighting module as a control signal to achieve synchronous control of lighting modules in different control circuits. This avoids dismantling the product structure and reduces wiring, improving installation convenience and the overall neatness and aesthetics of the product.
[0068] The terms “first,” “second,” “third,” “fourth,” “1,” “2,” etc. (if present) in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a particular order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this disclosure described herein can be implemented in a sequence other than that shown in the figures or text.
[0069] The above description is only a partial embodiment of this disclosure. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principles of this disclosure, and these improvements and modifications should also be considered within the scope of protection of this disclosure.
Claims
1. A switching system, characterized in that, It includes a first control circuit and at least one second control circuit that communicates with the first control circuit via an optical signal; The first control circuit is connected to the first lighting module; The second control circuit is equipped with a photosensitive switch module, which is used to control the second lighting module connected to it; the photosensitive switch module is used to receive the light signal emitted by the first lighting module.
2. The switching system according to claim 1, characterized in that, The first control circuit includes a first power supply module, a first control module, a first drive module, and at least one sensor switch module; Wherein, the first end of the first control module is connected to the output end of the first power supply module, and the second end of the first control module is connected to the sensor switch module; the input end of the first drive module is connected to the third end of the first control module, and the output end of the first drive module is connected to the first lighting module.
3. The switching system according to claim 2, characterized in that, The first driving module includes a first MOSFET, which includes a control electrode, a first electrode, and a second electrode. The control terminal of the first MOSFET is connected to the third terminal of the first control module, the first terminal of the first MOSFET is connected to the first lighting module, and the second terminal of the first MOSFET is grounded.
4. The switching system according to claim 1, characterized in that, The second control circuit includes a second power supply module, a second control module, and a second drive module; the photosensitive switch module includes a phototransistor, the collector of which is connected to the first terminal of the second control module and the output terminal of the second power supply module, the emitter of which is grounded, and the base of which is used to receive the light signal emitted by the first lighting module.
5. The switching system according to claim 4, characterized in that, The photosensitive switch module also includes a transistor, a first capacitor, a first resistor, a second resistor, and a third resistor; The base of the transistor is connected to the emitter of the phototransistor and the first end of the third resistor; the collector is connected to the second end of the second control module, the second end of the second resistor, and the first end of the first capacitor; and the emitter is connected to the second end of the first capacitor and grounded. Wherein, the first end of the first resistor is connected to the output end of the second power supply module and the first end of the second control module, and the second end is connected to the collector of the phototransistor; Wherein, the first end of the second resistor is connected to the first end of the second control module; The second terminal of the third resistor is grounded.
6. The switching system according to claim 5, characterized in that, The second driving module includes a second MOSFET, which includes a control electrode, a first electrode, and a second electrode. The control terminal of the second MOSFET is connected to the output terminal of the second control module, the first terminal of the second MOSFET is connected to the second lighting module, and the second terminal of the second MOSFET is grounded.
7. The switching system according to claim 6, characterized in that, The second drive module also includes a fourth resistor and a fifth resistor; The first end of the fourth resistor is connected to the output terminal of the second control module and the first end of the fifth resistor; the second end of the fourth resistor is grounded. The second end of the fifth resistor is connected to the control electrode of the second MOS transistor.
8. The switching system according to claim 1, characterized in that, The first lighting module and the second lighting module each include N LEDs; the positive terminals of the N LEDs are connected to the power supply, and the negative terminals are connected to the driving modules in the corresponding circuits. When N is greater than or equal to 2, the LEDs are cascaded and the positive terminal of the Mth LED among the N LEDs is connected to the negative terminal of the (M+1)th LED.
9. The switching system according to claim 1, characterized in that, The power supply modules in the first control circuit and the second control circuit include a second capacitor, a third capacitor, a fourth capacitor, a diode, and an LDO chip; The positive terminal of the diode is connected to the power supply and the first terminal of the second capacitor; the negative terminal of the diode is connected to the first terminal of the third capacitor and the input terminal of the LDO chip. The output terminal of the LDO chip is connected to the first terminal of the fourth capacitor and the control module in the first control circuit or the second control circuit. The second terminal of the second capacitor, the second terminal of the third capacitor, the ground terminal of the LDO chip, and the second terminal of the fourth capacitor are all grounded.
10. A lighting device, characterized in that, Includes the switching system according to any one of claims 1 to 9, a first lighting module, and at least one second lighting module; The first lighting module is connected to the first control circuit; each of the second lighting modules is connected to the corresponding second control circuit.