CN114980415A - UWB-based household intelligent LED lamp with one-finger connection function - Google Patents

Abstract

The invention discloses a UWB-based smart LED lamp with one finger connection function, comprising a UWB module, a main control unit, a voltage drop unit, an LED lamp group and an antenna unit. The main control unit is respectively connected with the UWB module and the voltage drop unit. , the LED light group and the antenna unit are electrically connected, and the voltage drop unit is also electrically connected to the UWB module; the voltage drop unit includes a first step-down branch and a second step-down branch, and the input end of the first step-down branch is used for The input power supply is connected, and the output ends of the first step-down branch are respectively electrically connected with the second step-down branch and the main control unit. The present invention is a household intelligent LED lamp with a one-finger connection function based on UWB. By setting the UWB module, the main control unit and the LED lamp group, the precise positioning function of the UWB module is combined with the household LED lamp, and only the control is required. The controller is aimed at the smart LED light, and the UWB module inside the smart LED light can measure the angular distance of the controller, and the light can be controlled by identifying the angle within the range, so as to realize the function of one-finger connection.

Description

Home smart LED light with one finger connection function based on UWB

technical field

The invention relates to the field of smart home, in particular to a home smart LED lamp with a function of one finger connection based on UWB.

Background technique

With the increasing popularity of intelligence, UWB ultra-wideband precise positioning technology has been initially developed in the market. For UWB technology that can achieve centimeter-level ranging, angle, and alignment, there will inevitably be a wave of development in the market. UWB technology will also be widely used in smart home, vehicle intelligence, indoor navigation, item tracking and pet tracking. In the UWB development market, the development of smart home LED lights will be a new field and a major defect in the market. This product combines the UWB precise positioning function with the home LED lights to realize one-finger connected home smart LED lights.

SUMMARY OF THE INVENTION

The purpose of the present invention is to overcome the deficiencies in the prior art, and to provide a household intelligent LED lamp with a function of one finger connection based on UWB.

The purpose of this invention is to realize through the following technical solutions:

A household intelligent LED lamp with one-finger connection function based on UWB, comprising: a UWB module, a main control unit, a voltage drop unit, an LED lamp group and an antenna unit,

The main control unit is respectively electrically connected with the UWB module, the voltage drop unit, the LED lamp group and the antenna unit, and the voltage drop unit is also electrically connected with the UWB module;

The voltage drop unit includes a first step-down branch and a second step-down branch, the input end of the first step-down branch is used to connect to the input power supply, and the output ends of the first step-down branch are respectively It is electrically connected with the second step-down branch and the main control unit.

Preferably, the first step-down branch includes a step-down device U1, a capacitor C12, a capacitor C13, a capacitor C14, and an inductor L1, and the input end of the step-down device U1 is electrically connected to the capacitor C13 and the capacitor C14 respectively. The input end of the step-down device U1 is also used to connect to the input power supply, the output end of the step-down device U1 is electrically connected to the first end of the inductor L1, and the second end of the inductor L1 It is electrically connected to the capacitor C12, and the second end of the inductor L1 is used to output a 3.3V voltage.

Preferably, the input power supply is 5V.

Preferably, the first step-down branch further includes a first feedback circuit, and the first feedback circuit is electrically connected to the step-down device U1.

Preferably, the first feedback circuit includes a resistor R4, a resistor R5 and a capacitor C4, the resistor R4 is electrically connected to the first end of the resistor R5, and the second end of the resistor R5 is connected to the voltage reducer U1 The feedback terminal of the capacitor C4 is electrically connected to both ends of the capacitor C4 and the two ends of the resistor R5 are respectively electrically connected.

Preferably, the second step-down branch includes a step-down device U4, a capacitor C22, a capacitor C23 and an inductor L3, the input end of the step-down device U4 is electrically connected to the capacitor C23, and the The input end is also electrically connected to the output end of the first step-down branch, the output end of the step-down device U4 is electrically connected to the first end of the inductor L3, and the second end of the inductor L3 is electrically connected to the The capacitor C22 is electrically connected, and the second end of the inductor L3 is used to output a voltage of 1.9V.

Preferably, the second step-down branch further includes a second feedback circuit, and the second feedback circuit is electrically connected to the step-down device U4.

Preferably, the second feedback circuit includes a resistor R7, a resistor R8 and a capacitor C19, the resistor R7 is electrically connected to the first end of the resistor R8, and the second end of the resistor R8 is connected to the voltage reducer U4 The feedback terminal of the capacitor C19 is electrically connected to both ends of the capacitor C19 and the two ends of the resistor R8 are respectively electrically connected.

Preferably, the main control unit includes a main control chip U3 and a crystal oscillator, and the main control chip U3 is respectively connected with the crystal oscillator, the UWB module, the voltage drop unit, the LED light group and the The antenna unit is electrically connected.

Preferably, the main control chip U3 adopts a chip with a model of QN9090.

Advantages and beneficial effects of the present invention compared to the prior art are as follows:

The present invention is a household intelligent LED lamp with a one-finger connection function based on UWB. By setting the UWB module, the main control unit and the LED lamp group, the precise positioning function of the UWB module is combined with the household LED lamp, and only control is required. By aiming the device at the smart LED light, the UWB module inside the smart LED light can measure the angular distance of the controller, and the light can be controlled by identifying the angle within the range, so as to realize the one-finger connection function; The pressure unit makes the whole smart LED light work stably and improves the working stability and reliability of the LED light.

Description of drawings

FIG. 1 is a functional block diagram of a UWB-based smart home LED lamp with a finger connection function according to an embodiment of the present invention;

FIG. 2 is a circuit diagram of a first step-down branch of the household smart LED lamp shown in FIG. 1;

FIG. 3 is a circuit diagram of a second step-down branch of the household smart LED lamp shown in FIG. 1;

Fig. 4 is the circuit diagram of the main control unit of the household intelligent LED lamp shown in Fig. 1;

Fig. 5 is the circuit diagram of the UWB module of the household smart LED lamp shown in Fig. 1;

Fig. 6 is the circuit diagram of the LED lamp group of the household smart LED lamp shown in Fig. 1;

FIG. 7 is a circuit diagram of two interface terminals of the household smart LED lamp shown in FIG. 1;

FIG. 8 is a circuit diagram of the rectifier flyback step-down circuit of the household smart LED lamp shown in FIG. 1 .

Detailed ways

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the related drawings. The preferred embodiments of the invention are shown in the accompanying drawings. However, the present invention may be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that a thorough and complete understanding of the present disclosure is provided.

Please refer to FIG. 1 , a UWB-based smart home LED lamp with one-finger connection function includes: a UWB module, a main control unit, a voltage drop unit, an LED lamp group and an antenna unit. It should be noted that the UWB module The group is used to realize the TDoA ranging function and AoA angle measuring function, and supports the IEEE802.15.4z network protocol, supports power consumption, and has various interface modules such as SPI; the main control unit is used to control the entire household smart LED lights The voltage drop unit is used to provide the power supply voltage for the UWB module and the main control unit; the LED light group is used to realize lighting, in this embodiment, a 5V1A household LED light is used; the antenna unit is used for receive or transmit signals.

The main control unit is respectively electrically connected to the UWB module, the voltage drop unit, the LED lamp group and the antenna unit, and the voltage drop unit is also electrically connected to the UWB module.

Further, the voltage drop unit includes a first step-down branch and a second step-down branch, the input end of the first step-down branch is used to connect to an input power supply, and the first step-down branch is The output ends are respectively electrically connected to the second step-down branch and the main control unit. It should be noted that the first step-down branch is used to step down the voltage to 3.3V, and the second step-down branch is used to step down the voltage to 1.9V.

Referring to FIG. 2 , the first step-down branch includes a step-down device U1 , a capacitor C12 , a capacitor C13 , a capacitor C14 and an inductor L1 . The input end of the step-down device U1 is connected to the capacitor C13 , the capacitor C13 C14 is electrically connected, the input end of the step-down device U1 is also used to connect to the input power supply, the output end of the step-down device U1 is electrically connected to the first end of the inductor L1, and the first end of the inductor L1 is electrically connected to the first end of the inductor L1. The two terminals are electrically connected to the capacitor C12, and the second terminal of the inductor L1 is used to output a 3.3V voltage. In this embodiment, the input power supply is 5V.

Referring to FIG. 2 , the first step-down branch further includes a first feedback circuit, and the first feedback circuit is electrically connected to the step-down device U1 . In this embodiment, the first feedback circuit includes a resistor R4, a resistor R5 and a capacitor C4, the resistor R4 is electrically connected to the first end of the resistor R5, and the second end of the resistor R5 is connected to the voltage drop The feedback terminal of the voltage regulator U1 is electrically connected, and the two ends of the capacitor C4 are electrically connected to the two ends of the resistor R5 respectively.

Please refer to FIG. 3 , the second step-down branch includes a step-down device U4 , a capacitor C22 , a capacitor C23 and an inductor L3 , the input end of the step-down device U4 is electrically connected to the capacitor C23 , and the step-down device The input end of U4 is also electrically connected to the output end of the first step-down branch, the output end of the step-down device U4 is electrically connected to the first end of the inductor L3, and the second end of the inductor L3 is electrically connected to The capacitor C22 is electrically connected, and the second end of the inductor L3 is used to output a voltage of 1.9V.

Referring to FIG. 3 , the second step-down branch further includes a second feedback circuit, and the second feedback circuit is electrically connected to the step-down device U4 . In this embodiment, the second feedback circuit includes a resistor R7, a resistor R8 and a capacitor C19, the resistor R7 is electrically connected to the first end of the resistor R8, and the second end of the resistor R8 is connected to the voltage drop The feedback terminal of the voltage regulator U4 is electrically connected, and the two ends of the capacitor C19 are electrically connected to the two ends of the resistor R8 respectively.

Using the step-down converter U1 and the corresponding matching components, the input voltage of 5V is matched through the resistor R4 and the resistor R5, and the output voltage is 3.3V to supply power to the main control chip U3. Using the step-down converter U4 and the corresponding matching components, the input voltage of 3.3V is matched through the resistor R7 and the resistor R8, and the output voltage is 1.9V to supply power to the UWB module.

Please refer to FIG. 4 , the main control unit includes a main control chip U3 and a crystal oscillator, and the main control chip U3 is respectively connected with the crystal oscillator, the UWB module, the voltage drop unit, the LED light group and the The antenna units are electrically connected. In this embodiment, the main control chip U3 adopts a chip whose model is QN9090. The main control chip adopts QN9090 chip, which has a variety of interfaces, supports Bluetooth transceiver function, and has Bluetooth 2.4G transceiver antenna interface.

U3 is the main control chip of QN9090, which has the function of Bluetooth communication and also plays the role of central control, which is used to process the ranging and angle measurement information received by UWB, so as to control the LED lights. Among them, pins 20 and 28 are power input pins, which supply power to the main control chip by inputting 3.3V; pins 1, 2, 33, and 34 are connected to external crystal pins, which are connected to X1 and X2 to provide two crystal oscillators for the main control chip U1. external clock signal, in which capacitor C7 and capacitor C6 are crystal oscillator matching capacitors, which are used to adjust the frequency offset of crystal oscillator; pins 3, 4, 5, 6, 8, 18, and 21 are used to communicate with the UWB transceiver module; 15, 16, and 27 are the SWDIO burn-in pins of the main control chip, which are used to burn in the running firmware; pins 11 and 12 are serial port pins, which are connected to the serial port terminal; pin 21 is used for control and control. LED light on and off; pin 29 is the internal DCDC output pin of the chip, which converts 3.3V to 1.2V through the internal DCDC circuit, and supplies power to pins 31, 32, and 35. Among them, the inductor L2 is used for the output of the step-down circuit, and the capacitor is involved in filtering. Better sending and receiving status. Among them, ANT1 is a 2.4G Bluetooth transceiver antenna, and the Bluetooth antenna is used for preliminary handshake and Bluetooth communication with the LED control device.

Please refer to FIG. 5 , the UWB module has three 6G to 9G antennas inside, which can realize the TDoA ranging function and the AoA angle measuring function, and has better transmission and reception performance. U2 is a UWB transceiver module with three antennas. It has the function of ranging and angle measuring. It is used to detect the distance and angle of the controller. When the controller object LED lights and the controller are detected, a pop-up window will appear on the controller. To control the LED lights, the pins 11 and 13 are power supply pins, which are powered by 1.9V, and the capacitors involved play a filtering role. Pins 1, 3, 4, 5, 6, 8, and 28 are external communication pins, which are used for communication between the module and the main control chip.

Please refer to FIG. 6 , the LED lamp group includes a switch control branch, a filter voltage regulator branch and an LED lamp. One end of the switch control branch is electrically connected to the main control unit, and the output ends of the switch control branch are respectively It is electrically connected with the filtering voltage-stabilizing branch and the LED lamp. The switch control branch includes a transistor Q1, a resistor R26 and a resistor R16; the filter voltage regulator branch includes a capacitor C31, a capacitor C32 and a diode D3; the LED lamp includes a light-emitting diode LED and a resistor R20. Specifically, the LED is a 5V1A household LED lamp, in which a MCU control circuit is composed of a transistor Q1, a resistor R26, and a resistor R16 to control the on-off of the LED, wherein C32 and C31 are filter capacitors. The diode D3 is a zener diode, which is used to stabilize the voltage of the LED and work stably.

In addition, please refer to Figure 7, it also includes two interface terminals, among which CON1 is the serial port terminal, through which external commands can be sent to the main control chip, and at the same time, the operation log of the main control chip can be viewed through this terminal; CON3 is SWD The terminal is used to externally burn the firmware into the main control chip.

Referring to FIG. 8 , the household smart LED lamp further includes a rectifier flyback step-down circuit, which can be directly connected to the commercial power to start, so that the LED lamp has a very high degree of intelligence. Further, the rectifier flyback step-down circuit includes a lightning-proof and surge-proof rectifier unit, an LC filter unit, a high-speed PWM controller, a switch unit, a transformer unit and a rectifier output unit. The input end of the surge rectification unit is used to connect to the AC mains, the output end of the lightning protection and surge protection rectification unit is electrically connected to the LC filter unit, and the output end of the LC filter unit is connected to the high-rate PWM The controller is electrically connected, and the high-rate PWM controller controls the on-off of the switch unit, and then controls the output of the transformer unit, and the output end of the transformer unit outputs a voltage through the rectifier output unit.

The anti-lightning and anti-surge rectifier unit includes a varistor MOV1, a fuse FU1, a thermistor NTC1, a common mode inductor LF1, a capacitor C29, a capacitor C35 and a rectifier bridge BD1; the LC filter unit includes an inductor L4, a resistor R10 , capacitor C33 and capacitor C34; the high-speed PWM controller adopts a chip of type OB2532; the switch unit includes a resistor R21 and a MOS transistor Q2; the transformer unit includes a transformer TR1, a resistor R11, a resistor R13, and a resistor R14 , capacitor C28 and diode D2; the rectification output unit includes diode D1, resistor R9, capacitor C24, capacitor C26 and capacitor C27.

The circuit is a circuit that is rectified and stepped down to 5V from the AC 220V voltage of the mains. CON2 is the mains access port, and MOV1 is a varistor. When there is a surge voltage such as lightning strike, it will be protected by the varistor MOV1. to the effect of lightning protection. NTC1 is a thermistor, and its resistance is large at the beginning of operation, so it can suppress inrush current. Through the common mode inductor LF1, capacitor C29 and capacitor C35, the EMC interference signal is absorbed, and a relatively pure AC input voltage is generated into the rectifier bridge.

After rectification, a DC high voltage is generated, and after an LC filter composed of an inductor L4 and a resistor R10, a DC voltage with a relatively small ripple voltage enters the primary 8 and 10 terminals of the transformer. Among them, the high-speed PWM controller IC1 is OB2532, which is an ultra-high-speed PWM controller, which can generate a 100K HZ driving waveform, control the switch of the MOS transistor Q2, excite the transformer TR1, and transmit the energy to the secondary terminals 1 and 2. , 5V voltage is generated after being rectified by the rectifier diode D1. At the same time, the energy is transmitted to the secondary terminals 5 and 6, and is rectified by the rectifier diode D4 to supply power to the high-speed PWM controller IC1.

Further, the rectifier flyback buck circuit further includes a waveform feedback unit and an overcurrent short-circuit protection unit, the detection end of the waveform feedback unit is electrically connected to the transformer unit, and the output end of the waveform feedback unit is connected to the transformer unit. The high rate PWM controller is electrically connected, the input end of the overcurrent short circuit protection unit is electrically connected to the switch unit, and the output end of the overcurrent short circuit protection unit is electrically connected to the high rate PWM controller. Specifically, the waveform feedback unit includes a resistor R19, a resistor R23 and a diode D4; the overcurrent short-circuit protection unit includes a resistor R21, a resistor R24 and a resistor R25. In this way, the voltage is fed back to the high-rate PWM controller IC1 through the resistor R19 and the resistor R23 for controlling the real-time waveform. Among them, the 3-pin of the high-speed PWM controller IC1 is used to detect the current of the primary side 8 and 10 through the resistor R22, the resistor R24, and the resistor R25, which plays the role of over-current and short-circuit protection, thus making the circuit more stable and reliable.

This product combines the UWB precise positioning function with the household LED lights. As long as the controller is aimed at the smart LED lights, the UWB inside the smart LED can measure the angular distance of the controller, and identify the angle within the range to measure the light. Control, so as to realize the function of one finger connection; there is a rectifier flyback step-down circuit inside, which can be used directly by connecting the smart LED light to the mains. The UWB module involved in the circuit will be used to communicate with the controller. The function of ranging and angle measurement involves the main control chip QN9090, which has Bluetooth function and can perform preliminary handshake connection with the controller.

In the UWB development market, the development of smart home LED lights will be a new field and a major defect in the market. This product combines the UWB precise positioning function with home LED lights to realize home smart LEDs. The home smart LED invented this time has high intelligence and can realize a charge function for LED lights, which will be the innovation and development of UWB in the field of smart home.

The above-mentioned embodiments only represent several embodiments of the present invention, and the descriptions thereof are specific and detailed, but should not be construed as limiting the scope of the patent of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can also be made, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention should be subject to the appended claims.

Claims (10)

1. The utility model provides a domestic intelligent LED lamp based on UWB possesses one and indicates even function which characterized in that includes: a UWB module, a main control unit, a voltage drop unit, an LED lamp set and an antenna unit,

the main control unit is respectively and electrically connected with the UWB module, the voltage drop unit, the LED lamp set and the antenna unit, and the voltage drop unit is also electrically connected with the UWB module;

the voltage drop unit comprises a first voltage drop branch and a second voltage drop branch, the input end of the first voltage drop branch is used for being connected with an input power supply, and the output end of the first voltage drop branch is respectively electrically connected with the second voltage drop branch and the main control unit.

2. The UWB-based household intelligent LED lamp with one-finger connection function based on claim 1, wherein the first voltage reduction branch comprises a voltage reducer U1, a capacitor C12, a capacitor C13, a capacitor C14 and an inductor L1, the input end of the voltage reducer U1 is electrically connected with the capacitor C13 and the capacitor C14 respectively, the input end of the voltage reducer U1 is further used for connecting the input power supply, the output end of the voltage reducer U1 is electrically connected with the first end of the inductor L1, the second end of the inductor L1 is electrically connected with the capacitor C12, and the second end of the inductor L1 is used for outputting a 3.3V voltage.

3. The UWB-based household intelligent LED lamp with a finger-connected function according to claim 1 or 2, wherein the input power supply is 5V voltage.

4. The UWB-based household intelligent LED lamp with a finger-connected function according to claim 2, wherein the first voltage reduction branch further comprises a first feedback circuit, and the first feedback circuit is electrically connected with the voltage reducer U1.

5. The UWB-based household intelligent LED lamp with the one-finger connection function according to claim 4, wherein the first feedback circuit comprises a resistor R4, a resistor R5 and a capacitor C4, the resistor R4 is electrically connected with a first end of the resistor R5, a second end of the resistor R5 is electrically connected with a feedback end of the step-down unit U1, and two ends of the capacitor C4 are electrically connected with two ends of the resistor R5 respectively.

6. The UWB-based household intelligent LED lamp with one-finger connection function according to claim 1, wherein the second voltage reduction branch comprises a voltage reducer U4, a capacitor C22, a capacitor C23 and an inductor L3, an input end of the voltage reducer U4 is electrically connected with the capacitor C23, an input end of the voltage reducer U4 is further electrically connected with an output end of the first voltage reduction branch, an output end of the voltage reducer U4 is electrically connected with a first end of the inductor L3, a second end of the inductor L3 is electrically connected with the capacitor C22, and a second end of the inductor L3 is used for outputting 1.9V voltage.

7. The UWB-based household intelligent LED lamp with a finger-connected function according to claim 6, wherein the second voltage reduction branch further comprises a second feedback circuit, and the second feedback circuit is electrically connected with the voltage reducer U4.

8. The UWB-based household intelligent LED lamp with a finger connection function according to claim 7, wherein the second feedback circuit comprises a resistor R7, a resistor R8 and a capacitor C19, the resistor R7 is electrically connected with a first end of the resistor R8, a second end of the resistor R8 is electrically connected with a feedback end of the step-down unit U4, and two ends of the capacitor C19 are electrically connected with two ends of the resistor R8 respectively.

9. The UWB-based household intelligent LED lamp with a finger-connected function according to claim 1, wherein the main control unit comprises a main control chip U3 and a crystal oscillator, and the main control chip U3 is electrically connected with the crystal oscillator, the UWB module, the voltage drop unit, the LED lamp set and the antenna unit respectively.

10. The UWB-based household intelligent LED lamp with the finger connection function according to claim 9, wherein the main control chip U3 adopts a QN9090 chip.

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