Wireless control two-wire color temperature dimmer

Abstract

The utility model discloses a wireless control two-wire color temperature dimmer which comprises a voltage input interface, a voltage stabilization chip connected with the voltage input interface, and a main controller, a wireless communication module, a first PWM control circuit, a second PWM control circuit and an H bridge type driving circuit which are electrically connected with the voltage output end of the voltage stabilization chip. The main controller is electrically connected with the wireless communication module, the first PWM control circuit, the second PWM control circuit and the H-bridge type driving circuit. According to the utility model, the installation of the LED dimmer is simpler, the output end only needs to be connected with two wires, and the risk of damage to the circuit is not caused even if the output end is reversely connected with the two wires. And wireless control adopts a 2.4 G private protocol, so that the reliability of the product is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of LED lamp controllers, in particular to a wireless controlled two-wire color temperature dimmer. Background Art

[0002] At present, the dual-color temperature control microcontrollers on the LED market are mainly driven by two MOS tubes. The output end needs to be connected to three wires (two LED cathodes and one common anode). If the output wires are connected incorrectly, there is a risk of burning out the drive circuit. In addition, the wireless remote control mostly uses the 433MHZ frequency band.

[0003] The output wires of ordinary three-wire LED dual color temperature dimmers are divided into anode and cathode. If they are connected in reverse, the controller may be damaged. Dimmers using 433M wireless radio frequency communication are easily interfered by wireless signals in the same frequency band.

[0004] Therefore, the prior art has defects and needs to be improved. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a wireless controlled two-wire color temperature dimmer, simplify the circuit structure and facilitate application.

[0006] The technical solution of the utility model is as follows: a wirelessly controlled two-wire color temperature dimmer is provided, comprising: a voltage input interface, a voltage stabilizing chip connected to the voltage input interface, a main controller electrically connected to the voltage output end of the voltage stabilizing chip, a wireless communication module, a first PWM control circuit, a second PWM control circuit, and an H-bridge drive circuit; the main controller is electrically connected to the wireless communication module, the first PWM control circuit, the second PWM control circuit, and the H-bridge drive circuit respectively.

[0007] The first PWM control circuit includes: a first N-type MOS tube, a first voltage-dividing resistor, a second voltage-dividing resistor, a third voltage-dividing resistor, and a first NPN-type transistor. The G pole of the first N-type MOS tube is electrically connected to the main controller, the S pole of the first N-type MOS tube is grounded, the two ends of the first voltage-dividing resistor are respectively connected to the base and the collector of the first NPN-type transistor, the collector of the first NPN-type transistor is electrically connected to the voltage output end of the voltage stabilizing chip, the two ends of the second voltage-dividing resistor are respectively electrically connected to the D pole of the first N-type MOS tube and the base of the first NPN-type transistor, and the two ends of the third voltage-dividing resistor are respectively electrically connected to the D pole of the first N-type MOS tube and the emitter of the first NPN-type transistor.

[0008] The second PWM control circuit includes: a second N-type MOS tube, a fourth voltage-dividing resistor, a fifth voltage-dividing resistor, a sixth voltage-dividing resistor, and a second NPN-type transistor. The G pole of the second N-type MOS tube is electrically connected to the main controller, the S pole of the second N-type MOS tube is grounded, the two ends of the fourth voltage-dividing resistor are respectively connected to the base and collector of the second NPN-type transistor, the collector of the second NPN-type transistor is electrically connected to the voltage output end of the voltage stabilizing chip, the two ends of the fifth voltage-dividing resistor are respectively electrically connected to the D pole of the second N-type MOS tube and the base of the second NPN-type transistor, and the two ends of the sixth voltage-dividing resistor are respectively electrically connected to the D pole of the second N-type MOS tube and the emitter of the second NPN-type transistor.

[0009] The H-bridge driving circuit includes: a first P-type MOS tube, a second P-type MOS tube, a third N-type MOS tube, a fourth N-type MOS tube, a seventh voltage-dividing resistor, and an eighth voltage-dividing resistor; the H-bridge driving circuit is used to drive a first LED lamp and a second LED lamp.

[0010] The S pole of the first P-type MOS tube is electrically connected to the voltage output end of the voltage stabilizing chip, the G pole of the first P-type MOS tube is electrically connected to the emitter of the first NPN-type transistor, the D pole of the first P-type MOS tube is electrically connected to the D pole of the third N-type MOS tube, the S pole of the third N-type MOS tube is grounded, the G pole of the third N-type MOS tube is electrically connected to the second N-type MOS tube, and the two ends of the seventh voltage-dividing resistor are respectively connected to the G pole and the S pole of the third N-type MOS tube.

[0011] The S pole of the second P-type MOS tube is connected to the voltage output end of the voltage stabilizing chip, the G pole of the second P-type MOS tube is electrically connected to the emitter of the second NPN-type transistor, the D pole of the second P-type MOS tube is electrically connected to the D pole of the fourth N-type MOS tube, the S pole of the fourth N-type MOS tube is grounded, the G pole of the fourth N-type MOS tube is electrically connected to the first N-type MOS tube, and the two ends of the eighth voltage-dividing resistor are respectively connected to the G pole and the S pole of the fourth N-type MOS tube.

[0012] The positive pole of the first LED lamp is connected to the D pole of the first P-type MOS tube, and the negative pole of the first LED lamp is connected to the D pole of the second P-type MOS tube; the negative pole of the second LED lamp is connected to the D pole of the first P-type MOS tube, and the positive pole of the second LED lamp is connected to the D pole of the second P-type MOS tube.

[0013] Furthermore, the wirelessly controlled two-wire color temperature dimmer further includes: a burning interface electrically connected to the main controller.

[0014] Furthermore, the wireless controlled two-wire color temperature dimmer further includes: a filter capacitor, one end of which is grounded, and the other end of which is connected to the voltage output end of the voltage stabilizing chip.

[0015] Furthermore, the wirelessly controlled two-wire color temperature dimmer further includes: a power-on indicator light, wherein the positive pole of the power-on indicator light is connected to the external voltage interface, and the positive pole of the power-on indicator light is connected to the voltage input terminal of the voltage stabilizing chip.

[0016] Furthermore, the wireless communication module is a 2.4G wireless communication module.

[0017] By adopting the above scheme, the utility model provides a wirelessly controlled two-wire color temperature dimmer, abandoning the traditional LED driving mode and adopting the time-sharing control mode. Only two wires need to be connected to the output end, and the two color temperature lamp beads on the LED light strip are reversely connected in parallel. If the output wires are connected in reverse, the two color temperature lamp beads will also work normally, but the color temperature value is opposite to the expected value. At this time, the PWM output by the main controller can be reversed through wireless remote control to make the color temperature value normal. The utility model can make the installation of the LED dimmer simpler. Only two wires need to be connected to the output end, and there is no risk of damage to the circuit if the connection is reversed. The wireless control adopts the 2.4G private protocol, which increases the reliability of the product. The utility model reduces the complexity of product installation and greatly reduces the risk of product damage due to incorrect installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a circuit diagram of the voltage input interface and voltage stabilizing chip of the utility model;

[0019] Figure 2 The circuit schematic diagram of the main controller;

[0020] Figure 3 is a circuit schematic diagram of a first PWM control circuit;

[0021] Figure 4 is a circuit schematic diagram of a second PWM control circuit;

[0022] Figure 5 It is the circuit schematic diagram of the H-bridge drive circuit;

[0023] Figure 6 It is the circuit schematic diagram of the wireless communication module;

[0024] Figure 7 This is the circuit schematic diagram of the burning interface. DETAILED DESCRIPTION

[0025] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0026] See also Figure 1-Figure 7 The present embodiment provides a wireless controlled two-wire color temperature dimmer, comprising: a voltage input interface 10, a voltage stabilizing chip 11 connected to the voltage input interface 10, a main controller 12 electrically connected to the voltage output end of the voltage stabilizing chip 11, a wireless communication module 13, a first PWM control circuit, a second PWM control circuit, and an H-bridge drive circuit; the main controller 12 is electrically connected to the wireless communication module 13, the first PWM control circuit, the second PWM control circuit, and the H-bridge drive circuit.

[0027] The first PWM control circuit includes: a first N-type MOS tube 14, a first voltage-dividing resistor 15, a second voltage-dividing resistor 16, a third voltage-dividing resistor 17, and a first NPN-type transistor 18. The G pole of the first N-type MOS tube 14 is electrically connected to the main controller 12, the S pole of the first N-type MOS tube 14 is grounded, the two ends of the first voltage-dividing resistor 15 are respectively connected to the base and collector of the first NPN-type transistor 18, the collector of the first NPN-type transistor 18 is electrically connected to the voltage output end of the voltage stabilizing chip 11, the two ends of the second voltage-dividing resistor 16 are respectively electrically connected to the D pole of the first N-type MOS tube 14 and the base of the first NPN-type transistor 18, and the two ends of the third voltage-dividing resistor 17 are respectively electrically connected to the D pole of the first N-type MOS tube 14 and the emitter of the first NPN-type transistor 18.

[0028] The second PWM control circuit includes: a second N-type MOS transistor 19, a fourth voltage-dividing resistor 20, a fifth voltage-dividing resistor 21, a sixth voltage-dividing resistor 22, and a second NPN-type transistor 23. The G pole of the second N-type MOS transistor 19 is electrically connected to the main controller 12, the S pole of the second N-type MOS transistor 19 is grounded, the two ends of the fourth voltage-dividing resistor 20 are respectively connected to the base and collector of the second NPN-type transistor 23, the collector of the second NPN-type transistor 23 is electrically connected to the voltage output end of the voltage stabilizing chip 11, the two ends of the fifth voltage-dividing resistor 21 are respectively electrically connected to the D pole of the second N-type MOS transistor 19 and the base of the second NPN-type transistor 23, and the two ends of the sixth voltage-dividing resistor 22 are respectively electrically connected to the D pole of the second N-type MOS transistor 19 and the emitter of the second NPN-type transistor 23.

[0029] The H-bridge driving circuit includes: a first P-type MOS transistor 24, a second P-type MOS transistor 25, a third N-type MOS transistor 26, a fourth N-type MOS transistor 27, a seventh voltage-dividing resistor 28, and an eighth voltage-dividing resistor 29; the H-bridge driving circuit is used to drive a first LED lamp 31 and a second LED lamp 30.

[0030] The S pole of the first P-type MOS tube 24 is electrically connected to the voltage output end of the voltage regulator chip 11, the G pole of the first P-type MOS tube 24 is electrically connected to the emitter of the first NPN-type transistor 18, the D pole of the first P-type MOS tube 24 is electrically connected to the D pole of the third N-type MOS tube 26, the S pole of the third N-type MOS tube 26 is grounded, the G pole of the third N-type MOS tube 26 is electrically connected to the second N-type MOS tube 19, and the two ends of the seventh voltage-dividing resistor 28 are respectively connected to the G pole and the S pole of the third N-type MOS tube 26.

[0031] The S pole of the second P-type MOS tube 25 is connected to the voltage output end of the voltage regulator chip 11, the G pole of the second P-type MOS tube 25 is electrically connected to the emitter of the second NPN-type transistor 23, the D pole of the second P-type MOS tube 25 is electrically connected to the D pole of the fourth N-type MOS tube 27, the S pole of the fourth N-type MOS tube 27 is grounded, the G pole of the fourth N-type MOS tube 27 is electrically connected to the first N-type MOS tube 14, and the two ends of the eighth voltage-dividing resistor 29 are respectively connected to the G pole and the S pole of the fourth N-type MOS tube 27.

[0032] The positive pole of the first LED lamp 31 is connected to the D pole of the first P-type MOS tube 24, and the negative pole of the first LED lamp 31 is connected to the D pole of the second P-type MOS tube 25; the negative pole of the second LED lamp 30 is connected to the D pole of the first P-type MOS tube 24, and the positive pole of the second LED lamp 30 is connected to the D pole of the second P-type MOS tube 25.

[0033] In this embodiment, the wireless controlled two-wire color temperature dimmer further includes: a burning interface 32 electrically connected to the main controller 12 .

[0034] In this embodiment, the wireless controlled two-wire color temperature dimmer further includes: a filter capacitor 33 , one end of which is grounded, and the other end of which is connected to the voltage output end of the voltage regulator chip 11 .

[0035] In this embodiment, the wireless controlled two-wire color temperature dimmer further includes: a power-on indicator light 34 , the positive pole of the power-on indicator light 34 is connected to the external voltage interface, and the positive pole of the power-on indicator light 34 is connected to the voltage input terminal of the voltage regulator chip 11 .

[0036] In this embodiment, the wireless communication module 13 is a 2.4G wireless communication module.

[0037] In summary, the utility model provides a wirelessly controlled two-wire color temperature dimmer, which abandons the traditional LED driving mode and adopts a time-sharing control method. The output end only needs to connect two wires, and the two color temperature lamp beads on the LED light strip are reversely connected in parallel. If the output wires are connected in reverse, the two color temperature lamp beads will also work normally, but the color temperature value is opposite to the expected value. At this time, the PWM output by the main controller can be reversed through wireless remote control to make the color temperature value normal. The utility model can make the installation of the LED dimmer simpler. The output end only needs to connect two wires, and there is no risk of damage to the circuit if it is connected in reverse. The wireless control adopts a 2.4G private protocol, which increases the reliability of the product. The utility model reduces the complexity of product installation and greatly reduces the risk of product damage due to incorrect installation.

[0038] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A wireless controlled two-wire color temperature dimmer, characterized in that: include: A voltage input interface, a voltage stabilizing chip connected to the voltage input interface, a main controller, a wireless communication module, a first PWM control circuit, a second PWM control circuit, and an H-bridge drive circuit electrically connected to the voltage output terminals of the voltage stabilizing chip respectively; the main controller is electrically connected to the wireless communication module, the first PWM control circuit, the second PWM control circuit, and the H-bridge drive circuit respectively; The first PWM control circuit includes: a first N-type MOS tube, a first voltage-dividing resistor, a second voltage-dividing resistor, a third voltage-dividing resistor, and a first NPN-type transistor, wherein the G pole of the first N-type MOS tube is electrically connected to the main controller, the S pole of the first N-type MOS tube is grounded, the two ends of the first voltage-dividing resistor are respectively connected to the base and collector of the first NPN-type transistor, the collector of the first NPN-type transistor is electrically connected to the voltage output end of the voltage stabilizing chip, the two ends of the second voltage-dividing resistor are respectively electrically connected to the D pole of the first N-type MOS tube and the base of the first NPN-type transistor, and the two ends of the third voltage-dividing resistor are respectively electrically connected to the D pole of the first N-type MOS tube and the emitter of the first NPN-type transistor; The second PWM control circuit comprises: a second N-type MOS tube, a fourth voltage-dividing resistor, a fifth voltage-dividing resistor, a sixth voltage-dividing resistor, and a second NPN-type transistor, wherein the G pole of the second N-type MOS tube is electrically connected to the main controller, the S pole of the second N-type MOS tube is grounded, the two ends of the fourth voltage-dividing resistor are respectively connected to the base and the collector of the second NPN-type transistor, the collector of the second NPN-type transistor is electrically connected to the voltage output end of the voltage stabilizing chip, the two ends of the fifth voltage-dividing resistor are respectively electrically connected to the D pole of the second N-type MOS tube and the base of the second NPN-type transistor, and the two ends of the sixth voltage-dividing resistor are respectively electrically connected to the D pole of the second N-type MOS tube and the emitter of the second NPN-type transistor; The H-bridge drive circuit comprises: a first P-type MOS tube, a second P-type MOS tube, a third N-type MOS tube, a fourth N-type MOS tube, a seventh voltage-dividing resistor, and an eighth voltage-dividing resistor; the H-bridge drive circuit is used to drive the first LED lamp and the second LED lamp; The S pole of the first P-type MOS tube is electrically connected to the voltage output terminal of the voltage stabilizing chip, the G pole of the first P-type MOS tube is electrically connected to the emitter of the first NPN-type transistor, the D pole of the first P-type MOS tube is electrically connected to the D pole of the third N-type MOS tube, the S pole of the third N-type MOS tube is grounded, the G pole of the third N-type MOS tube is electrically connected to the second N-type MOS tube, and the two ends of the seventh voltage-dividing resistor are respectively connected to the G pole and the S pole of the third N-type MOS tube; The S pole of the second P-type MOS tube is connected to the voltage output terminal of the voltage stabilizing chip, the G pole of the second P-type MOS tube is electrically connected to the emitter of the second NPN-type transistor, the D pole of the second P-type MOS tube is electrically connected to the D pole of the fourth N-type MOS tube, the S pole of the fourth N-type MOS tube is grounded, the G pole of the fourth N-type MOS tube is electrically connected to the first N-type MOS tube, and the two ends of the eighth voltage-dividing resistor are respectively connected to the G pole and the S pole of the fourth N-type MOS tube; The positive pole of the first LED lamp is connected to the D pole of the first P-type MOS tube, and the negative pole of the first LED lamp is connected to the D pole of the second P-type MOS tube; the negative pole of the second LED lamp is connected to the D pole of the first P-type MOS tube, and the positive pole of the second LED lamp is connected to the D pole of the second P-type MOS tube.

2. A wireless controlled two-wire color temperature dimmer according to claim 1, characterized in that: Also includes: A burning interface electrically connected to the main controller.

3. The wireless controlled two-wire color temperature dimmer according to claim 1, characterized in that: Also includes: A filter capacitor, one end of which is grounded, and the other end of which is connected to the voltage output end of the voltage stabilizing chip.

4. The wireless controlled two-wire color temperature dimmer according to claim 1, characterized in that: Also includes: A power-on indicator light, wherein the positive electrode of the power-on indicator light is connected to the external voltage interface, and the positive electrode of the power-on indicator light is connected to the voltage input terminal of the voltage stabilizing chip.

5. The wireless controlled two-wire color temperature dimmer according to claim 1, characterized in that: The wireless communication module is a 2.4G wireless communication module.

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