CN215420849U - LED drive circuit with bluetooth communication and microwave move response - Google Patents
LED drive circuit with bluetooth communication and microwave move response Download PDFInfo
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- CN215420849U CN215420849U CN202121418667.5U CN202121418667U CN215420849U CN 215420849 U CN215420849 U CN 215420849U CN 202121418667 U CN202121418667 U CN 202121418667U CN 215420849 U CN215420849 U CN 215420849U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
Abstract
The utility model discloses an LED driving circuit with Bluetooth communication and microwave movement induction, which integrates an LED driving chip, a power supply chip, a microwave movement induction chip and a Bluetooth chip in the same circuit, wherein the voltage output end of the power supply chip is respectively connected with the voltage input pin of the microwave movement induction chip and the voltage input pin of the Bluetooth chip, the signal output pin of the microwave movement induction chip is connected with the signal input pin of the Bluetooth chip, the PWM signal input pin of the LED driving chip is connected with the signal output pin of the Bluetooth chip, so that the LED driving chip supplies power to an LED and also receives the PWM signal sent by the Bluetooth chip, the LED driving chip can adjust the brightness of an LED lamp according to the PWM signal, and the Bluetooth chip can also send the movement signal detected by the microwave movement induction chip to the LED driving chip, so that the lamp has the movement induction function at the same time, therefore, the multifunctional LED lamp is realized, and the integration level of the LED drive circuit is improved.
Description
Technical Field
The utility model relates to the technical field of electronics, in particular to an LED driving circuit with Bluetooth communication and microwave motion induction functions.
Background
With the continuous development of the intelligent home concept, the functional requirements of people on lamp products are higher and higher. The LED lamp is required to have not only the lighting functions such as dimming and color modulation, but also the intelligent control functions such as remote control and time switch. Therefore, in the prior art, an LED driving module with a single function is usually installed in combination with a plurality of independent devices such as a dimming controller and a remote communication device, so as to realize a multifunctional LED lamp.
However, the installation of a plurality of independent devices in combination not only causes interference of conduction radiation between the independent devices to reduce reliability and stability of the lamp product, but also causes inconvenience in installation of the lamp.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is as follows: the LED driving circuit with the Bluetooth communication function and the microwave mobile induction function is provided, and the integration level of the LED driving circuit is improved.
In order to solve the technical problems, the utility model adopts the technical scheme that:
an LED drive circuit with Bluetooth communication and microwave movement induction comprises an LED drive chip, a power supply chip, a microwave movement induction chip and a Bluetooth chip;
the voltage input pin of the LED driving chip is used for being connected with rectified mains supply, the PWM signal input pin of the LED driving chip is connected with the signal output pin of the Bluetooth chip, and the output end of the LED driving chip is used for being connected with an LED lamp;
the voltage output end of the power supply chip is respectively connected with the voltage input pin of the microwave mobile induction chip and the voltage input pin of the Bluetooth chip;
and a signal output pin of the microwave mobile induction chip is connected with a signal input pin of the Bluetooth chip.
Furthermore, the circuit also comprises a first diode, a second diode, a third diode, a first resistor, a second resistor, a first inductor, a first capacitor and a second capacitor;
a drain electrode pin of the power supply chip is connected with the cathode of the first diode, and the anode of the first diode is used for being connected with rectified mains supply;
a current sampling pin of the power supply chip is connected with one end of the first resistor; the other end of the first resistor is respectively connected with the cathode of the third diode, one end of the first inductor and a chip ground pin of the power supply chip; the anode of the third diode is grounded;
the voltage selection pin of the power supply chip is respectively connected with the chip ground pin of the power supply chip and one end of the first capacitor;
a power supply pin of the power supply chip is respectively connected with the other end of the first capacitor and the cathode of the second diode; the anode of the second diode is respectively connected with the other end of the first inductor, one end of the second resistor and one end of the second capacitor;
the other end of the second resistor and the other end of the second capacitor are respectively grounded;
and two ends of the second capacitor are voltage output ends of the power supply chip.
Further, the device also comprises a first variable resistor, an excitation coil, a rectifier bridge stack and a filter circuit;
two ends of the first variable resistor are respectively used for being connected with a mains supply;
the input end of the excitation coil is connected with the first variable resistor in parallel, and the output end of the excitation coil is connected with the filter circuit in parallel;
a first output end of the filter circuit is connected with a first input end of the rectifier bridge stack, and a second output end of the filter circuit is connected with a second input end of the rectifier bridge stack; and the output end of the bridge stack is used for outputting rectified mains supply.
Further, the device also comprises a safety resistor;
one end of the safety resistor is connected with the live wire input end of the mains supply, and the other end of the safety resistor is connected with one end of the first variable resistor respectively.
Further, the device also comprises an MOS tube, a sampling resistor, a second inductor, a third inductor and a third capacitor;
the PWM pin of the LED driving chip is connected with the signal output pin of the Bluetooth chip;
a grid output pin of the LED driving chip is connected with a grid of the MOS tube;
a current acquisition pin of the LED driving chip is respectively connected with one end of the sampling resistor and the source electrode of the MOS tube, and the other end of the sampling resistor is grounded;
the drain electrode of the MOS tube is connected with one end of the second inductor;
the positive input end of the third inductor is connected with one end of the third capacitor; the negative electrode input end of the third inductor is respectively connected with the other end of the third capacitor and the other end of the second inductor; the positive output end of the third inductor is used for being connected with the positive electrode of the LED lamp;
and the negative electrode output end of the third inductor is used for being connected with the negative electrode of the LED lamp.
Further, a fourth capacitor is also included;
one end of the fourth capacitor is connected with a voltage input pin of the Bluetooth chip;
and the other end of the fourth capacitor is connected with a chip ground pin of the Bluetooth chip.
Further, a third resistor is also included;
one end of the third resistor is connected with a signal output pin of the microwave mobile induction chip;
the other end of the third resistor is connected with a signal input pin of the Bluetooth chip.
The utility model has the beneficial effects that: the LED driving chip, the power supply chip, the microwave movement induction chip and the Bluetooth chip are integrated in the same circuit, the voltage output end of the power supply chip is respectively connected with the voltage input pin of the microwave movement induction chip and the voltage input pin of the Bluetooth chip, the signal output pin of the microwave movement induction chip is connected with the signal input pin of the Bluetooth chip, the PWM signal input pin of the LED driving chip is connected with the signal output pin of the Bluetooth chip, so that the LED driving chip supplies power to the LED and also receives the PWM signal sent by the Bluetooth chip, the LED driving chip can adjust the brightness and the turn-off or turn-on state of the LED lamp according to the PWM signal, and the Bluetooth chip can also send the movement signal detected by the microwave movement induction chip to the LED driving chip, so that the lamp has the movement induction function at the same time, and a plurality of chips are integrated in the LED driving circuit to realize the multifunctional LED lamp, the integration level of the LED driving circuit is improved.
Drawings
Fig. 1 is a schematic circuit structure diagram of an LED driving circuit with bluetooth communication and microwave motion sensing according to an embodiment of the present invention;
fig. 2 is a schematic circuit diagram of a power supply chip of an LED driving circuit with bluetooth communication and microwave motion sensing according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a rectifier circuit of an LED driving circuit with bluetooth communication and microwave motion sensing according to an embodiment of the present invention;
fig. 4 is a schematic circuit diagram of an LED driving chip of an LED driving circuit with bluetooth communication and microwave motion sensing according to an embodiment of the present invention;
fig. 5 is a schematic circuit diagram of a bluetooth chip having an LED driving circuit for bluetooth communication and microwave motion sensing according to an embodiment of the present invention;
fig. 6 is a schematic circuit diagram of a microwave motion sensing chip having an LED driving circuit for bluetooth communication and microwave motion sensing according to an embodiment of the present invention;
description of reference numerals:
r1, a first resistor; r2, a second resistor; r3, third resistor; r4, fourth resistor; r5, fifth resistor; r6, sixth resistor; r7, seventh resistor; r8, eighth resistor; r9, ninth resistor; r10, tenth resistor; r11, eleventh resistor; r12, twelfth resistor; r13, thirteenth resistor; r14, fourteenth resistance; r15, fifteenth resistor; r16, sixteenth resistor; c1, a first capacitance; c2, a second capacitor; c3, a third capacitance; c4, a fourth capacitance; c5, a fifth capacitance; c6, a sixth capacitor; c7, a seventh capacitance; c8, an eighth capacitor; c9, ninth capacitance; c10, tenth capacitance; c11, an eleventh capacitor; c12, twelfth capacitor; l1, a first inductor; l2, a second inductor; l3, third inductance; l4, fourth inductance; q1 and MOS tube; d1, a first diode; d2, a second diode; d3, a third diode; d4, a fourth diode; d5, a fifth diode; d6, a sixth diode; d7, a seventh diode; d8, an eighth diode; VR1, a first variable resistor; VR2, a second variable resistor; LF1, excitation coil.
Detailed Description
In order to explain technical contents, achieved objects, and effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.
Referring to fig. 1, an LED driving circuit with bluetooth communication and microwave motion sensing includes an LED driving chip, a power supply chip, a microwave motion sensing chip, and a bluetooth chip;
the voltage input pin of the LED driving chip is used for being connected with rectified mains supply, the PWM signal input pin of the LED driving chip is connected with the signal output pin of the Bluetooth chip, and the output end of the LED driving chip is used for being connected with an LED lamp;
the voltage output end of the power supply chip is respectively connected with the voltage input pin of the microwave mobile induction chip and the voltage input pin of the Bluetooth chip;
and a signal output pin of the microwave mobile induction chip is connected with a signal input pin of the Bluetooth chip.
From the above description, the beneficial effects of the present invention are: the LED driving chip, the power supply chip, the microwave movement induction chip and the Bluetooth chip are integrated in the same circuit, the voltage output end of the power supply chip is respectively connected with the voltage input pin of the microwave movement induction chip and the voltage input pin of the Bluetooth chip, the signal output pin of the microwave movement induction chip is connected with the signal input pin of the Bluetooth chip, the PWM signal input pin of the LED driving chip is connected with the signal output pin of the Bluetooth chip, so that the LED driving chip supplies power to the LED and also receives the PWM signal sent by the Bluetooth chip, the LED driving chip can adjust the brightness and the turn-off or turn-on state of the LED lamp according to the PWM signal, and the Bluetooth chip can also send the movement signal detected by the microwave movement induction chip to the LED driving chip, so that the lamp has the movement induction function at the same time, and a plurality of chips are integrated in the LED driving circuit to realize the multifunctional LED lamp, the integration level of the LED driving circuit is improved.
Furthermore, the circuit also comprises a first diode, a second diode, a third diode, a first resistor, a second resistor, a first inductor, a first capacitor and a second capacitor;
a drain electrode pin of the power supply chip is connected with the cathode of the first diode, and the anode of the first diode is used for being connected with rectified mains supply;
a current sampling pin of the power supply chip is connected with one end of the first resistor; the other end of the first resistor is respectively connected with the cathode of the third diode, one end of the first inductor and a chip ground pin of the power supply chip; the anode of the third diode is grounded;
the voltage selection pin of the power supply chip is respectively connected with the chip ground pin of the power supply chip and one end of the first capacitor;
a power supply pin of the power supply chip is respectively connected with the other end of the first capacitor and the cathode of the second diode; the anode of the second diode is respectively connected with the other end of the first inductor, one end of the second resistor and one end of the second capacitor;
the other end of the second resistor and the other end of the second capacitor are respectively grounded;
and two ends of the second capacitor are voltage output ends of the power supply chip.
As can be seen from the above description, the power supply chip can stably output 3.3V dc voltage through the connection relationship of the electronic devices, and provide stable 3.3V voltage to the bluetooth chip and the microwave mobile sensing chip, so that the integrated LED driving circuit operates in a stable state.
Further, the device also comprises a first variable resistor, an excitation coil, a rectifier bridge stack and a filter circuit;
two ends of the first variable resistor are respectively used for being connected with a mains supply;
the input end of the excitation coil is connected with the first variable resistor in parallel, and the output end of the excitation coil is connected with the filter circuit in parallel;
a first output end of the filter circuit is connected with a first input end of the rectifier bridge stack, and a second output end of the filter circuit is connected with a second input end of the rectifier bridge stack; and the output end of the bridge stack is used for outputting rectified mains supply.
According to the description, the rectifier bridge stack and the filter circuit can convert the input mains supply into a stable direct current input source, and the first variable resistor and the excitation coil are arranged, so that the integrated LED drive circuit has better conduction and radiation performance, and the reliability of the integrated LED drive circuit is greatly improved.
Further, the device also comprises a safety resistor;
one end of the safety resistor is connected with the live wire input end of the mains supply, and the other end of the safety resistor is connected with one end of the first variable resistor respectively.
According to the description, the safety resistor is added, one end of the safety resistor is connected with the input end of the live wire of the mains supply, so that when the LED driving circuit abnormally generates large current in work, the safety resistor can be timely fused to enable the LED driving circuit to be powered off, and the safety of the LED driving circuit is improved.
Further, the device also comprises an MOS tube, a sampling resistor, a second inductor, a third inductor and a third capacitor;
the PWM pin of the LED driving chip is connected with the signal output pin of the Bluetooth chip;
a grid output pin of the LED driving chip is connected with a grid of the MOS tube;
a current acquisition pin of the LED driving chip is respectively connected with one end of the sampling resistor and the source electrode of the MOS tube, and the other end of the sampling resistor is grounded;
the drain electrode of the MOS tube is connected with one end of the second inductor;
the positive input end of the third inductor is connected with one end of the third capacitor; the negative electrode input end of the third inductor is respectively connected with the other end of the third capacitor and the other end of the second inductor; the positive output end of the third inductor is used for being connected with the positive electrode of the LED lamp;
and the negative electrode output end of the third inductor is used for being connected with the negative electrode of the LED lamp.
According to the above description, the MOS tube is controlled by the LED driving chip, and the output current is controlled by the sampling resistor, so that the circuit can output stable direct-current voltage to the LED, and the LED driving circuit can control the LED lamp more efficiently and stably.
Further, a fourth capacitor is also included;
one end of the fourth capacitor is connected with a voltage input pin of the Bluetooth chip;
and the other end of the fourth capacitor is connected with a chip ground pin of the Bluetooth chip.
According to the above description, the stability of the electric signal input and the signal output of the bluetooth chip is improved by arranging the fourth capacitor, so that the working stability of the integrated LED driving circuit is improved.
Further, a third resistor is also included;
one end of the third resistor is connected with a signal output pin of the microwave mobile induction chip;
the other end of the third resistor is connected with a signal input pin of the Bluetooth chip.
According to the above description, the power output from the microwave mobile induction chip to the signal input end of the bluetooth chip is reduced by arranging the third resistor, so that the signal output from the microwave mobile induction chip can be processed in the range of the bluetooth chip, and the processing capacity of the bluetooth chip is improved.
Example one
Referring to fig. 1, an LED driving circuit with bluetooth communication and microwave motion sensing includes an LED driving constant current circuit, a power supply circuit, a bluetooth module, and a microwave sensing module; the LED driving constant current circuit comprises an LED driving chip and a peripheral circuit thereof; the power supply circuit comprises a power supply chip and a peripheral circuit thereof; the Bluetooth module comprises a Bluetooth chip and a peripheral circuit thereof; the microwave induction module comprises a microwave mobile induction chip and a peripheral circuit thereof;
specifically, a voltage input pin of the LED driving chip is used for connecting with a rectified mains supply, a PWM signal input pin of the LED driving chip is connected with a signal output pin of the bluetooth chip, and an output end of the LED driving chip is used for connecting with an LED lamp; the voltage output end of the power supply chip is respectively connected with the voltage input pin of the microwave mobile induction chip and the voltage input pin of the Bluetooth chip; and a signal output pin of the microwave mobile induction chip is connected with a signal input pin of the Bluetooth chip.
Example two
The present embodiment is different from the first embodiment in that peripheral circuits of the LED driving chip and the power supply chip U1 are defined;
referring to fig. 2, the peripheral circuit of the power supply chip U1 includes a first diode D1, a second diode D2, a third diode D3, a first resistor R1, a second resistor R2, a first inductor L1, a first capacitor C1, and a second capacitor C2; the type of the power supply chip U1 is as follows: BP 2525D;
a drain electrode pin D of the power supply chip U1 is connected with the cathode of the first diode D1, and the anode of the first diode D1 is used for being connected with rectified mains supply; a current sampling pin CS of the power supply chip U1 is connected with one end of the first resistor R1; the other end of the first resistor R1 is respectively connected to the cathode of the third diode D3, one end of the first inductor L1 and the chip ground pin GND of the power supply chip U1; the anode of the third diode D3 is grounded; a voltage selection pin SEL of the power supply chip U1 is respectively connected with a chip ground pin of the power supply chip U1 and one end of the first capacitor C1; a power supply pin VCC of the power supply chip U1 is respectively connected with the other end of the first capacitor C1 and the cathode of the second diode D2; the anode of the second diode D2 is connected to the other end of the first inductor L1, one end of the second resistor R2, and one end of the second capacitor C2, respectively; the other end of the second resistor R2 and the other end of the second capacitor C2 are respectively grounded; two ends of the second capacitor C2 are voltage output ends of the power supply chip U1; the second capacitor C2 is an electrolytic capacitor, and the anode of the second capacitor C2 is connected with the anode of the second diode D2; the negative electrode of the second capacitor C2 is grounded; two ends of the second capacitor C2 are voltage output ends of the power supply chip U1 and provide 3.3V regulated voltage output;
referring to fig. 3, the circuit further includes a first variable resistor VR1, a field coil LF1, a bridge rectifier and a filter circuit;
two ends of the first variable resistor VR1 are respectively used for being connected with a mains supply; the input end of the excitation coil LF1 is connected in parallel with the first variable resistor VR1, and the output end of the excitation coil LF1 is connected in parallel with the filter circuit; a first output end of the filter circuit is connected with a first input end of the rectifier bridge stack, and a second output end of the filter circuit is connected with a second input end of the rectifier bridge stack; the output end of the rectifier bridge stack is used for outputting rectified mains supply; the rectifier bridge stack comprises a fourth diode D4, a fifth diode D5, a sixth diode D6, and a seventh diode D7;
specifically, the inductor further comprises a fuse resistor F1, a second variable resistor VR2, a fourth inductor L4, a fifth capacitor C5, a fourth resistor R4 and a sixth capacitor C6;
one end of the safety resistor F1 is connected with the live wire input end of the commercial power, and the other end of the safety resistor F1 is respectively connected with one end of the first variable resistor VR1 and the first input end of the excitation coil LF 1; the other end of the first variable resistor VR1 is connected with the input end of a mains supply zero line; a second input terminal of the exciting coil LF1 is connected to the other end of the first variable resistor VR 1; one end of the fifth capacitor C5 is connected to the first output end of the excitation coil LF1 and one end of the fourth inductor L4, respectively, and the other end of the fifth capacitor C5 is connected to one end of the second variable resistor VR2, the second output end of the excitation coil LF1, and the first input end of the bridge rectifier; the other end of the fourth inductor L4 is connected to the other end of the second variable resistor VR2 and the second input end of the bridge rectifier, respectively; the fourth resistor R4 is connected in parallel with the fourth inductor L4; one end of the sixth capacitor C6 is connected to the positive output of the rectifier bridge stack, and the other end of the sixth capacitor C6 is grounded;
referring to fig. 4, the peripheral circuit of the LED driving chip includes a MOS transistor Q1, a sampling resistor, a second inductor L2, a second inductor L3, and a third capacitor C3; the LED driving chip is characterized in that the types of the LED driving chip are as follows: MT9710D-SOP 8; the sampling resistor includes: a ninth resistor R9 and a tenth resistor R10;
the PWM pin of the LED driving chip is connected with the signal output pin of the Bluetooth chip; a grid output pin of the LED driving chip is connected with a grid of the MOS tube Q1; a current acquisition pin of the LED driving chip is respectively connected with one end of the sampling resistor and a source electrode of the MOS transistor Q1, and the other end of the sampling resistor is grounded; the drain electrode of the MOS transistor Q1 is connected with one end of the second inductor L2; the positive input end of the second inductor L3 is connected with one end of the third capacitor C3; the negative electrode input end of the second inductor L3 is respectively connected with the other end of the third capacitor C3 and the other end of the second inductor L2; the positive electrode output end of the second inductor L3 is used for being connected with the positive electrode of the LED lamp; the negative electrode output end of the second inductor L3 is used for being connected with the negative electrode of the LED lamp;
specifically, the circuit further includes a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, a ninth resistor R9, a tenth resistor R10, an eleventh resistor R11, a twelfth resistor R12, a thirteenth resistor R13, a fourteenth resistor R14, a fifteenth resistor R15, a sixteenth resistor R16, an eleventh capacitor C11, a twelfth capacitor C12, a seventh capacitor C7, an eighth capacitor C8, a ninth capacitor C9, a tenth capacitor C10, a MOS transistor Q1, and an eighth diode D8;
a current sampling pin CS of the LED driving chip is respectively connected with one end of the twelfth capacitor C12 and one end of the eighth resistor R8; the other end of the twelfth capacitor C12 is grounded; a PWM pin of the LED driving chip is connected to one end of the sixteenth resistor R16, one end of the eleventh capacitor C11, and one end of the fifth resistor R5, respectively; the other end of the sixteenth resistor R16 is connected with a signal output pin of the Bluetooth chip; the other end of the fifth resistor R5 is connected with the other end of the eleventh capacitor C11; the other end of the eleventh capacitor C11 is grounded; a voltage input pin of the LED driving chip is connected with one end of the sixth resistor R6; the other end of the sixth resistor R6 is used for being connected with rectified mains supply; a grid output pin of the LED driving chip is connected with the seventh resistor R7; the other end of the seventh resistor R7 is connected with the gate of the MOS transistor Q1 and one end of the eleventh resistor R11 respectively; the other end of the eleventh resistor R11 is connected to the other end of the eighth resistor R8, one end of the ninth resistor R9, one end of the tenth resistor R10, the source of the MOS transistor Q1, and one end of the seventh capacitor C7, respectively; the other end of the ninth resistor R9 and the other end of the tenth resistor R10 are grounded; the drain of the MOS transistor Q1 is respectively connected to the other end of the seventh capacitor C7, the anode of the eighth diode D8, one end of the second inductor L2, and one end of the twelfth resistor R12; the other end of the twelfth resistor R12 is connected with one end of the eighth capacitor C8; an anode input end of the second inductor L3 is respectively connected to the other end of the sixth resistor R6, the other end of the eighth capacitor C8, a cathode of the eighth diode D8, one end of the ninth capacitor C9, one end of the thirteenth resistor R13, and one end of the third capacitor C3; one end of the fourteenth resistor R14 is connected to the other end of the thirteenth resistor R13, and the other end of the fourteenth resistor R14 is connected to one end of the fifteenth resistor R15; a negative input end of the second inductor L3 is respectively connected to the other end of the third capacitor C3, one end of the tenth capacitor C10, the other end of the fifteenth resistor R15 and the other end of the second inductor L2; the other end of the ninth capacitor C9 and the other end of the tenth capacitor C10 are grounded; the positive electrode output end of the second inductor L3 is used for being connected with the positive electrode of the LED lamp; the negative electrode output end of the second inductor L3 is used for being connected with the negative electrode of the LED lamp;
referring to fig. 5, the peripheral circuit of the bluetooth chip further includes a fourth capacitor C4;
one end of the fourth capacitor C4 is connected with a voltage input pin of the Bluetooth chip; the other end of the fourth capacitor C4 is connected with a chip ground pin of the Bluetooth chip; the model of the Bluetooth chip is as follows: YWLB-1;
referring to fig. 6, the peripheral circuit of the microwave motion sensing chip further includes a third resistor R3;
one end of the third resistor R3 is connected with a signal output pin of the microwave motion sensing chip; the other end of the third resistor R3 is connected with a signal input pin of the Bluetooth chip; the microwave mobile induction chip is characterized in that the types of the microwave mobile induction chip are as follows: aWWB-1.
In summary, according to the LED driving circuit with bluetooth communication and microwave motion sensing provided by the present invention, the LED driving chip, the power supply chip, the microwave motion sensing chip and the bluetooth chip are integrated in the same circuit, the voltage output terminal of the power supply chip is respectively connected to the voltage input pin of the microwave motion sensing chip and the voltage input pin of the bluetooth chip, the signal output pin of the microwave motion sensing chip is connected to the signal input pin of the bluetooth chip, and the PWM signal input pin of the LED driving chip is connected to the signal output pin of the bluetooth chip, so that the LED driving chip can receive the PWM signal sent from the bluetooth chip while supplying power to the LED, and thus the LED driving chip can adjust the brightness and off or on state of the LED lamp according to the PWM signal, and the bluetooth chip can also send the motion signal detected by the microwave motion sensing chip to the LED driving chip, the LED driving circuit has the advantages that the lamp has the function of mobile induction, and meanwhile, the LED driving constant current circuit is also provided with the excitation coil, the safety resistor, the filter circuit and other devices, so that the integrated LED driving circuit realizes a multifunctional LED lamp, the integration level of the LED driving circuit is improved, and the LED driving circuit has better safety and radiation conduction performance.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent changes made by using the contents of the present specification and the drawings, or applied directly or indirectly to the related technical fields, are included in the scope of the present invention.
Claims (7)
1. An LED drive circuit with Bluetooth communication and microwave movement induction is characterized by comprising an LED drive chip, a power supply chip, a microwave movement induction chip and a Bluetooth chip;
the voltage input pin of the LED driving chip is used for being connected with rectified mains supply, the PWM signal input pin of the LED driving chip is connected with the signal output pin of the Bluetooth chip, and the output end of the LED driving chip is used for being connected with an LED lamp;
the voltage output end of the power supply chip is respectively connected with the voltage input pin of the microwave mobile induction chip and the voltage input pin of the Bluetooth chip;
and a signal output pin of the microwave mobile induction chip is connected with a signal input pin of the Bluetooth chip.
2. The LED driving circuit with Bluetooth communication and microwave motion sensing of claim 1, further comprising a first diode, a second diode, a third diode, a first resistor, a second resistor, a first inductor, a first capacitor and a second capacitor;
a drain electrode pin of the power supply chip is connected with the cathode of the first diode, and the anode of the first diode is used for being connected with rectified mains supply;
a current sampling pin of the power supply chip is connected with one end of the first resistor; the other end of the first resistor is respectively connected with the cathode of the third diode, one end of the first inductor and a chip ground pin of the power supply chip; the anode of the third diode is grounded;
the voltage selection pin of the power supply chip is respectively connected with the chip ground pin of the power supply chip and one end of the first capacitor;
a power supply pin of the power supply chip is respectively connected with the other end of the first capacitor and the cathode of the second diode; the anode of the second diode is respectively connected with the other end of the first inductor, one end of the second resistor and one end of the second capacitor;
the other end of the second resistor and the other end of the second capacitor are respectively grounded;
and two ends of the second capacitor are voltage output ends of the power supply chip.
3. The LED driving circuit with Bluetooth communication and microwave motion sensing of claim 1, further comprising a first variable resistor, an excitation coil, a rectifier bridge stack and a filter circuit;
two ends of the first variable resistor are respectively used for being connected with a mains supply;
the input end of the excitation coil is connected with the first variable resistor in parallel, and the output end of the excitation coil is connected with the filter circuit in parallel;
a first output end of the filter circuit is connected with a first input end of the rectifier bridge stack, and a second output end of the filter circuit is connected with a second input end of the rectifier bridge stack; and the output end of the bridge stack is used for outputting rectified mains supply.
4. The LED driving circuit with Bluetooth communication and microwave motion sensing of claim 3, further comprising a safety resistor;
one end of the safety resistor is connected with the live wire input end of the mains supply, and the other end of the safety resistor is connected with one end of the first variable resistor respectively.
5. The LED driving circuit with Bluetooth communication and microwave motion induction as claimed in claim 1, further comprising a MOS transistor, a sampling resistor, a second inductor, a third inductor and a third capacitor;
the PWM pin of the LED driving chip is connected with the signal output pin of the Bluetooth chip;
a grid output pin of the LED driving chip is connected with a grid of the MOS tube;
a current acquisition pin of the LED driving chip is respectively connected with one end of the sampling resistor and the source electrode of the MOS tube, and the other end of the sampling resistor is grounded;
the drain electrode of the MOS tube is connected with one end of the second inductor;
the positive input end of the third inductor is connected with one end of the third capacitor; the negative electrode input end of the third inductor is respectively connected with the other end of the third capacitor and the other end of the second inductor; the positive output end of the third inductor is used for being connected with the positive electrode of the LED lamp;
and the negative electrode output end of the third inductor is used for being connected with the negative electrode of the LED lamp.
6. The LED driving circuit with Bluetooth communication and microwave motion sensing of claim 1, further comprising a fourth capacitor;
one end of the fourth capacitor is connected with a voltage input pin of the Bluetooth chip;
and the other end of the fourth capacitor is connected with a chip ground pin of the Bluetooth chip.
7. The LED driving circuit with Bluetooth communication and microwave motion sensing of claim 1, further comprising a third resistor;
one end of the third resistor is connected with a signal output pin of the microwave mobile induction chip;
the other end of the third resistor is connected with a signal input pin of the Bluetooth chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121418667.5U CN215420849U (en) | 2021-06-24 | 2021-06-24 | LED drive circuit with bluetooth communication and microwave move response |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121418667.5U CN215420849U (en) | 2021-06-24 | 2021-06-24 | LED drive circuit with bluetooth communication and microwave move response |
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| Publication Number | Publication Date |
|---|---|
| CN215420849U true CN215420849U (en) | 2022-01-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121418667.5U Active CN215420849U (en) | 2021-06-24 | 2021-06-24 | LED drive circuit with bluetooth communication and microwave move response |
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| Country | Link |
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| CN (1) | CN215420849U (en) |
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2021
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