CN220067740U - Infrared sensing intelligent LED drive circuit - Google Patents
Infrared sensing intelligent LED drive circuit Download PDFInfo
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- CN220067740U CN220067740U CN202321450340.5U CN202321450340U CN220067740U CN 220067740 U CN220067740 U CN 220067740U CN 202321450340 U CN202321450340 U CN 202321450340U CN 220067740 U CN220067740 U CN 220067740U
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Abstract
The utility model relates to the technical field of LED light control, in particular to an infrared sensing intelligent LED driving circuit which comprises a rectifying module, a filtering module, a low-voltage power supply module, an infrared sensing light control module and a high-voltage constant-current output module, wherein the low-voltage power supply module is used for converting high-voltage direct current into low-voltage direct current, the infrared sensing light control module is used for sensing infrared waves and outputting pulse signals to the high-voltage constant-current output module, and the high-voltage constant-current output module is used for controlling the on and off of LED lamp beads. The utility model aims to provide an infrared sensing intelligent LED driving circuit which can meet the effects of automatic extinction in the daytime and automatic lighting at night of infrared sensing by completing circuit design in a small space.
Description
Technical Field
The utility model relates to the technical field of LED light control, in particular to an infrared sensing intelligent LED driving circuit.
Background
At present, the LED light-operated products are generally used as bulb lamps and small night lamps in the market, and because the products have enough design space, the diversification of the functions of outdoor light-operated design and product expansion is difficult in the driving volume of the filament lamps and the limited antique products thereof. At present, development of an infrared sensing circuit capable of being applied to a small LED lamp body is urgently needed.
Disclosure of Invention
In order to overcome the defects and the shortcomings in the prior art, the utility model aims to provide the infrared sensing intelligent LED driving circuit which can realize the effects of automatic extinction in the daytime and automatic brightening at night of infrared sensing by completing circuit design in a small space.
The utility model is realized by the following technical scheme:
the infrared sensing intelligent LED driving circuit comprises a rectifying module, a filtering module, a low-voltage power supply module, an infrared sensing light control module and a high-voltage constant-current output module, wherein the low-voltage power supply module is used for converting high-voltage direct current into low-voltage direct current, the infrared sensing light control module is used for sensing infrared waves and outputting pulse signals to the high-voltage constant-current output module, and the high-voltage constant-current output module is used for controlling the on and off of LED lamp beads;
the input end of the rectification module is used for being externally connected with commercial power, the output end of the rectification module is electrically connected with the input end of the filtering module, the output end of the filtering module is electrically connected with the input end of the low-voltage power supply module, the output end of the low-voltage power supply module is electrically connected with the input end of the infrared sensing light control module, the output end of the infrared sensing light control module is electrically connected with the input end of the high-voltage constant-current output module, and the output end of the high-voltage constant-current output module is used for being externally connected with LED lamp beads.
The driving circuit further comprises an input protection module, the input protection module comprises a resistor F1, and the resistor F1 is connected in series with the input end of the rectifying module.
The low-voltage power supply module comprises a chip U3 with the model of BP8519C, a capacitor C2 and an inductor L2, wherein the Drain end of the chip U3 is electrically connected with the output end of the filtering module, the FB end of the chip U3 is electrically connected with the input end of the infrared sensing light control module, the capacitor C2 is connected in parallel with the GND end and the VCC end of the chip U3, and the GND end of the chip U3 is also electrically connected with the input end of the infrared sensing light control module through the inductor L2.
The infrared light control module comprises an infrared sensor and a chip U2 with the model number of TG1021B, the VDD end of the chip U2 and the negative electrode of the infrared sensor are respectively and electrically connected with an inductor L2, the PWM3 end of the chip U2 is electrically connected with the positive electrode of the infrared sensor, and the PWM1 end and the CMP1 end of the chip U2 are respectively and electrically connected with the input end of the high-voltage constant-current output module.
The high-voltage constant-current output module comprises a chip U1 with the model of BP5772D, wherein the DIM1 end of the chip U1 is electrically connected with the PWM1 end of the chip U2, the DIM2 end of the chip U1 is electrically connected with the CMP1 end of the chip U1, the VIN end of the chip U1 is used for externally connecting the anode of the LED lamp bead, and the D1 end and the D2 end of the chip U1 are used for externally connecting the cathode of the LED lamp bead.
The utility model has the beneficial effects that:
according to the infrared sensing intelligent LED driving circuit, the rectification module, the filtering module, the low-voltage power supply module, the infrared sensing light control module and the high-voltage constant-current output module are arranged, and the circuit structure of the modules is small, so that the requirements of new ERP parameter authentication are met, the infrared sensing intelligent LED driving circuit can automatically extinguish in daytime and automatically lighten at night when a product senses 960nm infrared wavelength, and the performance is ensured to be stable.
Drawings
The utility model will be further described with reference to the accompanying drawings, in which embodiments do not constitute any limitation of the utility model, and other drawings can be obtained by one of ordinary skill in the art without inventive effort from the following drawings.
Fig. 1 is a block diagram of a module of the present utility model.
Fig. 2 is a schematic circuit diagram of the present utility model.
Reference numerals
The device comprises a rectifying module-101, a filtering module-102, a low-voltage power supply module-103, an infrared light control module-104 and a high-voltage constant-current output module-105.
Detailed Description
In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The present utility model may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the utility model, whereby the utility model is not limited to the specific embodiments disclosed below.
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
At present, the LED light-operated products are generally used as bulb lamps and small night lamps in the market, and because the products have enough design space, the diversification of the functions of outdoor light-operated design and product expansion is difficult in the driving volume of the filament lamps and the limited antique products thereof. At present, development of an infrared sensing circuit capable of being applied to a small LED lamp body is urgently needed.
In order to solve the above problems, the present embodiment discloses an infrared sensing intelligent LED driving circuit, whose block diagram and schematic circuit diagram are shown in fig. 1 and 2, the driving circuit includes a rectifying module 101, a filtering module 102, a low voltage power supply module 103, an infrared sensing light control module 104 and a high voltage constant current output module 105, the low voltage power supply module 103 is used for converting high voltage direct current into low voltage direct current, the infrared sensing light control module 104 is used for sensing infrared waves and outputting pulse signals to the high voltage constant current output module 105, and the high voltage constant current output module 105 is used for controlling the on/off of LED lamp beads;
the input end of the rectification module 101 is used for externally connecting commercial power, the output end of the rectification module 101 is electrically connected with the input end of the filtering module 102, the output end of the filtering module 102 is electrically connected with the input end of the low-voltage power supply module 103, the output end of the low-voltage power supply module 103 is electrically connected with the input end of the infrared light-sensing control module 104, the output end of the infrared light-sensing control module 104 is electrically connected with the input end of the high-voltage constant-current output module 105, and the output end of the high-voltage constant-current output module 105 is used for externally connecting LED lamp beads.
In this embodiment, the capacitor C1, the inductor L1 and the capacitor E1 form a pi-type filter circuit, and a design structure of a small-volume nonpolar patch capacitor and a polar electrolytic capacitor is adopted, so that the problem of electromagnetic interference is solved, and the space volume is saved.
Further, the driving circuit further includes an input protection module, the input protection module includes a resistor F1, and the resistor F1 is connected in series to the input end of the rectifying module 101.
Further, the low voltage power supply module 103 includes a chip U3 with a model BP8519C, a capacitor C2, and an inductor L2, where a Drain end of the chip U3 is electrically connected to an output end of the filtering module 102, an FB end of the chip U3 is electrically connected to an input end of the infrared sensing module 104, the capacitor C2 is parallel to a GND end and a VCC end of the chip U3, and the GND end of the chip U3 is further electrically connected to the input end of the infrared sensing module 104 through the inductor L2.
Further, the infrared sensing light control module 104 includes an infrared sensor and a chip U2 with a model TG1021B, a VDD end of the chip U2 and a negative electrode of the infrared sensor are electrically connected with the inductor L2, a PWM3 end of the chip U2 is electrically connected with a positive electrode of the infrared sensor, and a PWM1 end and a CMP1 end of the chip U2 are electrically connected with an input end of the high-voltage constant-current output module 105.
Further, the high-voltage constant-current output module 105 includes a chip U1 with a model BP5772D, a DIM1 end of the chip U1 is electrically connected with a PWM1 end of the chip U2, a DIM2 end of the chip U1 is electrically connected with a CMP1 end of the chip U1, a VIN end of the chip U1 is used for connecting with an anode of an LED lamp bead externally, and a D1 end and a D2 end of the chip U1 are used for connecting with a cathode of the LED lamp bead externally.
In this embodiment, the chip U3 is a BUCK non-isolated constant voltage power supply design chip, and adopts a multi-mode control technology to convert high-voltage direct current into 3.3V voltage for output, so as to apply auxiliary power supply to the chip U2. The chip U2 is an infrared light work control module, the chip U3 is connected to the VDD end of the chip U2 through the inductor L2 to serve as power supply, when the voltage is more than 3.3V, the chip U2 starts working, the PWM1 end and the PWM3 end of the chip U2 are PWM signal transmission serial ports, the chip U2 is connected to the DIM1 end and the DIM2 end of the chip U1, and the LED1 infrared light sensor is connected with the pull-down resistor R2 to GND. Because sunlight can reflect a large amount of infrared light indoors during daytime, the infrared light sensor converts light into a level signal during daytime, the lamp is controlled to be turned off when the level signal is more than 0.7V, and the lamp is controlled to be turned on when the level signal is more than 0.3V, so that the outdoor light control function is realized.
Specifically, the VIN end of the chip U1 is connected to a rear bus of the rectifier bridge, and the diode D1 is switched on in the forward direction and switched off in the reverse direction to prevent current from flowing backwards; the DIM1 end and the DIM2 end of the chip U1 are PWM signal serial ports, the corresponding D1 end and the D2 end are used respectively, the CS end is connected with the resistors RS1 to GND, the power change of a product is regulated and controlled, the RCAP end is connected with the resistors RC1 to GND, the COUT end is a current harmonic power control MOS switch drain electrode, and when the input voltage is larger than the voltage of the two ends of the electrolytic capacitor, the MOS is conducted, and the output current can be calculated according to the MOS switch drain electrode.
In summary, in the infrared sensing intelligent LED driving circuit of the present embodiment, through being provided with the rectifying module 101, the filtering module 102, the low-voltage power supply module 103, the infrared sensing light control module 104 and the high-voltage constant-current output module 105, in the present embodiment, the infrared sensor uses 960nm black plastic package light control sensor, which breaks through the limitation of the traditional materials, can resist the high temperature of 260 ℃, optimizes the production process, and designs the circuit on the circuit board with the space of 21mm diameter only, thereby realizing the performance thereof. Because the circuit structure of the module is smaller, the novel ERP parameter authentication requirement is met, the product is used for sensing 960nm infrared wavelength, is automatically extinguished in the daytime and automatically lightened at night, and the performance is ensured to be stable.
Finally, it should be noted that the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the scope of the present utility model, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made to the technical solution of the present utility model without departing from the spirit and scope of the technical solution of the present utility model.
Claims (5)
1. An infrared sensing intelligent LED drive circuit which is characterized in that: the LED lamp bead lighting control device comprises a rectifying module, a filtering module, a low-voltage power supply module, an infrared sensing light control module and a high-voltage constant-current output module, wherein the low-voltage power supply module is used for converting high-voltage direct current into low-voltage direct current, the infrared sensing light control module is used for sensing infrared waves and outputting pulse signals to the high-voltage constant-current output module, and the high-voltage constant-current output module is used for controlling the lighting and the extinguishing of LED lamp beads;
the input end of the rectification module is used for being externally connected with commercial power, the output end of the rectification module is electrically connected with the input end of the filtering module, the output end of the filtering module is electrically connected with the input end of the low-voltage power supply module, the output end of the low-voltage power supply module is electrically connected with the input end of the infrared sensing light control module, the output end of the infrared sensing light control module is electrically connected with the input end of the high-voltage constant-current output module, and the output end of the high-voltage constant-current output module is used for being externally connected with LED lamp beads.
2. The infrared sensing intelligent LED driving circuit of claim 1, wherein: the driving circuit further comprises an input protection module, the input protection module comprises a resistor F1, and the resistor F1 is connected in series with the input end of the rectifying module.
3. The infrared sensing intelligent LED driving circuit of claim 1, wherein: the low-voltage power supply module comprises a chip U3 with the model of BP8519C, a capacitor C2 and an inductor L2, wherein the Drain end of the chip U3 is electrically connected with the output end of the filtering module, the FB end of the chip U3 is electrically connected with the input end of the infrared sensing light control module, the capacitor C2 is connected in parallel with the GND end and the VCC end of the chip U3, and the GND end of the chip U3 is also electrically connected with the input end of the infrared sensing light control module through the inductor L2.
4. An infrared sensing intelligent LED driving circuit according to claim 3, wherein: the infrared sensing light control module comprises an infrared sensor and a chip U2 with the model number of TG1021B, the VDD end of the chip U2 and the negative electrode of the infrared sensor are respectively and electrically connected with an inductor L2, the PWM3 end of the chip U2 is electrically connected with the positive electrode of the infrared sensor, and the PWM1 end and the CMP1 end of the chip U2 are respectively and electrically connected with the input end of the high-voltage constant-current output module.
5. The infrared sensing intelligent LED driving circuit of claim 4, wherein: the high-voltage constant-current output module comprises a chip U1 with the model of BP5772D, wherein the DIM1 end of the chip U1 is electrically connected with the PWM1 end of the chip U2, the DIM2 end of the chip U1 is electrically connected with the CMP1 end of the chip U1, the VIN end of the chip U1 is used for externally connecting the anode of the LED lamp bead, and the D1 end and the D2 end of the chip U1 are used for externally connecting the cathode of the LED lamp bead.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321450340.5U CN220067740U (en) | 2023-06-07 | 2023-06-07 | Infrared sensing intelligent LED drive circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321450340.5U CN220067740U (en) | 2023-06-07 | 2023-06-07 | Infrared sensing intelligent LED drive circuit |
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| Publication Number | Publication Date |
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| CN220067740U true CN220067740U (en) | 2023-11-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202321450340.5U Active CN220067740U (en) | 2023-06-07 | 2023-06-07 | Infrared sensing intelligent LED drive circuit |
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| CN (1) | CN220067740U (en) |
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- 2023-06-07 CN CN202321450340.5U patent/CN220067740U/en active Active
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