Multi-mode infrared control circuit

Abstract

According to the multi-mode infrared control circuit provided by the utility model, the switch can control a lamp to switch color temperature, the infrared geminate transistors can control on-off and dimming, and infrared remote control has the functions of on-off, dimming and the like. Therefore, multiple control modes of one lamp are achieved, and the requirements of different users are met.

Description

Technical Field

[0001] The utility model relates to a switch control circuit of an LED lamp. Background Art

[0002] LED is a new generation of lighting source. Due to its high luminous efficiency, low energy consumption, long life, mercury-free, and good dimming performance, it is rapidly gaining popularity in the market. In order to create a more comfortable lighting atmosphere and save energy, the research on LED dimming technology is extremely important. There are currently two mainstream dimming methods in the market, one is switch segmented dimming, and the other is remote control dimming. However, many existing LED power dimming devices only have a single dimming method. Utility Model Content

[0003] The main technical problem to be solved by the utility model is to provide a multi-mode infrared control circuit which can use other control modes in addition to infrared remote control.

[0004] In order to solve the above technical problems, the utility model provides a multi-mode infrared control circuit, including: a mechanical switch K1, an infrared remote control chip U3, an infrared transmitting tube IRTX1 and an infrared receiving tube IRRX1;

[0005] The mechanical switch K1 is connected in parallel with the capacitor C7, and the mechanical switch K1 is connected between the pin 11 of the main control chip U2 and GND; when the mechanical switch K1 is turned on, the pin 11 of the main control chip U2 inputs a high level signal; the pins 15 and 17 of the main control chip U2 are used to output PWM signals to drive LED lamp beads of different color temperatures to light up;

[0006] The infrared emitting tube IRTX1 is connected between the power supply voltage VDD and GND, the anode of the infrared emitting tube IRTX1 is connected to the power supply voltage VDD through the resistor R6, and the cathode is connected to GND through the switch tube Q2, and the control of the switch tube Q2 is connected to the pin 10 of the main control chip U2;

[0007] The infrared receiving tube I RRX1 is connected between the power supply voltage VDD and GND, the collector of the infrared receiving tube I RRX1 is connected to the power supply voltage VDD through a resistor R5, the emitter is connected to GND through a resistor R25, and the resistor R25 and the capacitor C9 are connected in parallel; the emitter of the infrared receiving tube IRRX1 is also connected to the control electrode of the switch tube Q1 through the capacitor C8; the collector of the switch tube Q1 is connected to the power supply voltage VDD through the resistors R8 and R5, and the emitter is connected to GND through the resistor R32; the resistor R32 is connected in parallel with the capacitor C10; the collector of the switch tube Q1 is connected to the pin 13 of the main control chip U2;

[0008] Pin 2 of the infrared remote control chip U3 is used to receive the infrared signal emitted by the infrared remote control, and pin 1 of the infrared remote control chip U3 is connected to pin 9 of the main control chip; pins 3, 5, 7, 15, and 17 of the main control chip U2 are respectively used to control the conduction of switch tubes Q3, Q4, Q5, Q6, and Q7, and the switch tubes Q3, Q4, Q5, Q6, and Q7 are respectively connected between a string of LED lamp beads and GND; the color temperatures of the LED lamp beads corresponding to the switch tubes Q3, Q4, Q5, Q6, and Q7 are different.

[0009] In a preferred embodiment, a power supply chip U1 is also included, which is used to convert the input voltage into a VDD power supply voltage.

[0010] Compared with the prior art, the technical solution of the utility model has the following beneficial effects:

[0011] The utility model provides a multi-mode infrared control circuit, which has the characteristics of multi-mode and multi-selection, realizes the combination of switch, gesture sensing, infrared remote control and other modes, and is more convenient and comfortable for users to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a circuit diagram of the power supply chip U1 in the preferred embodiment of the utility model;

[0013] Figure 2 This is a circuit diagram of the main control chip U2 in the preferred embodiment of the utility model;

[0014] Figure 3 This is a circuit diagram of the infrared remote control chip U3 in the preferred embodiment of the utility model. DETAILED DESCRIPTION

[0015] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model; it is obvious that the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the utility model without making creative work are within the scope of protection of the utility model.

[0016] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships described in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0017] In the description of the present utility model, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installed", "provided with", "installed / connected", "connected", etc. should be understood in a broad sense. For example, "connection" can be a wall-mounted connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be a direct connection or an indirect connection through an intermediate medium. It can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to specific circumstances.

[0018] refer to Figure 1-Figure 3 , this embodiment provides a multi-mode infrared control circuit, including: a mechanical switch K1, an infrared remote control chip U3, an infrared transmitting tube I RTX1 and an infrared receiving tube I RRX1;

[0019] The mechanical switch K1 is connected in parallel with the capacitor C7, and the mechanical switch K1 is connected between the pin 11 of the main control chip U2 and GND; when the mechanical switch K1 is turned on, the pin 11 of the main control chip U2 inputs a high level signal; the pins 15 and 17 of the main control chip U2 are used to output PWM signals to drive LED lamp beads of different color temperatures to light up;

[0020] The infrared emitting tube I RTX1 is connected between the power supply voltage VDD and GND, the anode of the infrared emitting tube I RTX1 is connected to the power supply voltage VDD through the resistor R6, and the cathode is connected to GND through the switch tube Q2, and the control of the switch tube Q2 is connected to the pin 10 of the main control chip U2;

[0021] The infrared receiving tube I RRX1 is connected between the power supply voltage VDD and GND, the collector of the infrared receiving tube I RRX1 is connected to the power supply voltage VDD through a resistor R5, the emitter is connected to GND through a resistor R25, and the resistor R25 and the capacitor C9 are connected in parallel; the emitter of the infrared receiving tube IRRX1 is also connected to the control electrode of the switch tube Q1 through the capacitor C8; the collector of the switch tube Q1 is connected to the power supply voltage VDD through the resistors R8 and R5, and the emitter is connected to GND through the resistor R32; the resistor R32 is connected in parallel with the capacitor C10; the collector of the switch tube Q1 is connected to the pin 13 of the main control chip U2;

[0022] Pin 2 of the infrared remote control chip U3 is used to receive the infrared signal emitted by the infrared remote control, and pin 1 of the infrared remote control chip U3 is connected to pin 9 of the main control chip; pins 3, 5, 7, 15, and 17 of the main control chip U2 are respectively used to control the conduction of switch tubes Q3, Q4, Q5, Q6, and Q7, and the switch tubes Q3, Q4, Q5, Q6, and Q7 are respectively connected between a string of LED lamp beads and GND; the color temperatures of the LED lamp beads corresponding to the switch tubes Q3, Q4, Q5, Q6, and Q7 are different.

[0023] In order to generate the above-mentioned power supply voltage VDD, a power supply chip U1 is also included to convert the input voltage into a VDD power supply voltage, and the L1 chip inductor supplies power to the power chip U1.

[0024] The following describes in detail the three modes of the circuit of this embodiment:

[0025] Switch switching mode: Switch K1 is a touch switch. When pressed by external force, the switch is turned on to generate a high level. Pin 11 of the microcontroller U2 receives the electrical signal, which is processed by the internal program of the microcontroller and controls the output duty cycle of pins 15 and 17 of the microcontroller to control the switching of color temperature.

[0026] Infrared pair mode: infrared pair controls switch and dimming, hand scan controls switch, long release controls dimming. The infrared pair works in pulse counting mode, and the infrared receiving tube uses photosensitive transistor, and the sensing distance is adjustable. I RTX1 is an infrared transmitting tube, which emits infrared light that is invisible to the naked eye. The intensity of infrared light will increase with the increase of current. I RRX1 is an infrared receiving tube. There is a PN junction with infrared light sensitivity inside the receiving tube. The photosensitive receiving tube can be made to react only to infrared light by adding a filter colorant to the encapsulation glue. When there is no infrared light, the photosensitive tube will not conduct. When there is infrared light, the photosensitive tube will conduct to form a photocurrent. Within the stress range of the components, the current increases with the increase of the intensity of infrared light. The photosensitive transistor conducts to the base of the transistor Q1, giving different electrical signals to the transistor Q1, so that the transistor Q1 is turned on, generating different electrical signals. The microcontroller U2 reads different electrical signals through the 13th pin and controls the output of the 15th and 17th pins of the microcontroller U2 through internal program processing, thereby controlling the on and off and dimming.

[0027] Infrared remote control mode: The infrared remote control transmits infrared light which is received by the infrared receiving tube U3. The infrared receiving tube U3 transmits the received electrical signal through the pin 1 to the pin 9 of the single-chip microcomputer U2. The internal program processes the MOS tubes Q3, Q4, Q5, Q6, and Q7 through the pins 3, 5, 7, 15, and 17 of the single-chip microcomputer to control the on and off of the R, G, B, C, and W color temperature switching functions. The timing function is realized

[0028] The above is only a preferred specific implementation method of the utility model, but the design concept of the utility model is not limited to this. Any technician familiar with the technical field who uses this concept to make non-substantial changes to the utility model within the technical scope disclosed by the utility model shall be deemed to infringe the protection scope of the utility model.

Claims

1. A multi-mode infrared control circuit, characterized in that include: Mechanical switch K1, infrared remote control chip U3, infrared transmitting tube IRTX1 and infrared receiving tube IRRX1; The mechanical switch K1 is connected in parallel with the capacitor C7, and the mechanical switch K1 is connected between the pin 11 of the main control chip U2 and GND; when the mechanical switch K1 is turned on, the pin 11 of the main control chip U2 inputs a high level signal; the pins 15 and 17 of the main control chip U2 are used to output PWM signals to drive LED lamp beads of different color temperatures to light up; The infrared emitting tube IRTX1 is connected between the power supply voltage VDD and GND, the anode of the infrared emitting tube IRTX1 is connected to the power supply voltage VDD through the resistor R6, and the cathode is connected to GND through the switch tube Q2, and the control of the switch tube Q2 is connected to the pin 10 of the main control chip U2; The infrared receiving tube IRRX1 is connected between the power supply voltage VDD and GND, the collector of the infrared receiving tube IRRX1 is connected to the power supply voltage VDD through a resistor R5, the emitter is connected to GND through a resistor R25, and the resistor R25 and the capacitor C9 are connected in parallel; the emitter of the infrared receiving tube IRRX1 is also connected to the control electrode of the switch tube Q1 through a capacitor C8; the collector of the switch tube Q1 is connected to the power supply voltage VDD through resistors R8 and R5, and the emitter is connected to GND through a resistor R32; the resistor R32 is connected in parallel with the capacitor C10; the collector of the switch tube Q1 is connected to the pin 13 of the main control chip U2; Pin 2 of the infrared remote control chip U3 is used to receive the infrared signal emitted by the infrared remote control, and pin 1 of the infrared remote control chip U3 is connected to pin 9 of the main control chip; pins 3, 5, 7, 15, and 17 of the main control chip U2 are respectively used to control the conduction of switch tubes Q3, Q4, Q5, Q6, and Q7, and the switch tubes Q3, Q4, Q5, Q6, and Q7 are respectively connected between a string of LED lamp beads and GND; the color temperatures of the LED lamp beads corresponding to the switch tubes Q3, Q4, Q5, Q6, and Q7 are different.

2. A multi-mode infrared control circuit according to claim 1, characterized in that: A power supply chip U1 is also included for converting the input voltage into a VDD power supply voltage.

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