CN219120499U

CN219120499U - Intelligent bulb lamp adopting slot antenna array

Info

Publication number: CN219120499U
Application number: CN202223284890.2U
Authority: CN
Inventors: 叶飞; 翁步升; 刘琼; 卢琦; 朱嘉恺; 葛伶俐
Original assignee: Hengdian Group Tospo Lighting Co Ltd
Current assignee: Hengdian Group Tospo Lighting Co Ltd
Priority date: 2022-12-07
Filing date: 2022-12-07
Publication date: 2023-06-02
Anticipated expiration: 2032-12-07

Abstract

The utility model discloses an intelligent bulb lamp adopting a slot antenna array, which comprises a wireless SOC controller, wherein a GPIO pin of the wireless SOC controller is connected with a channel control pin of a radio frequency switch, an RF output pin of the wireless SOC controller is connected with an input end of a radio frequency matching circuit, an output end of the radio frequency matching circuit is connected with an input end of the radio frequency switch, a plurality of impedance matching circuits are connected with an output end of the radio frequency switch, and the output end of the impedance matching circuit is connected with a slot antenna. According to the utility model, the plurality of slot antennas are arranged in the intelligent bulb lamp to form the slot antenna array, so that the defects of using a solid antenna, avoiding light spots and shielding caused by the fact that the solid antenna extends out of the light source plate and the like are avoided, meanwhile, the channels of the antenna are expanded, and the performance and the directivity of the antenna are improved.

Description

Intelligent bulb lamp adopting slot antenna array

Technical Field

The utility model belongs to the technical field of LED bulb lamps, and particularly relates to an intelligent bulb lamp adopting a slot antenna array.

Background

The intelligent lamp controlled based on the wireless IOT technology has no more than one antenna as a communication carrier, so as to obtain higher antenna efficiency and longer communication distance. There is a need in antenna design to leave as much headroom as possible for the antenna, reducing the shielding of the antenna magnetic field by metals.

However, in the application of the intelligent LED lamp, especially the bulb lamp, the volume is often small, and the following problems are faced when the common monopole, PCB board or ceramic antenna is adopted:

1. the bulb lamp is entirely made of plastic-coated aluminum and an aluminum substrate, and a communication antenna of the wireless IOT needs to extend out of the metal cavity to radiate signals, so that the bulb lamp has certain difficulty in structure and optical design;

2. to ensure wireless communication performance, the antenna must extend beyond the light source board. Resulting in an antenna that is much taller than the height of the LED light source. The light emitted by the LED light source is blocked, and shadows are caused. Especially, the control application of a plurality of LEDs causes the phenomena of uneven color mixing, serious light spots and the like;

3. the bulb lamp is difficult to ensure consistency due to the influences of antenna clearance, metal shielding, antenna types and the like, so that actual application communication is unstable, and user experience is poor.

Disclosure of Invention

The utility model aims to provide an intelligent bulb lamp adopting a slot antenna array, so as to solve the problems in the background technology. The intelligent bulb lamp adopting the slot antenna array has the characteristic that wireless signals can be received and transmitted in all directions.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides an adopt intelligent ball bubble lamp of slot antenna array, includes wireless SOC controller, wireless SOC controller's GPIO pin is connected with the passageway control pin of radio frequency switch, and wireless SOC controller's RF output pin is connected with the input of radio frequency matching circuit, and the output of radio frequency matching circuit is connected with the input of radio frequency switch, and the output of radio frequency switch is connected with a plurality of impedance matching circuit, and impedance matching circuit's output is connected with the slot antenna.

In order to ensure that wireless signals can be received and transmitted in each direction, the direction performance of the antenna is improved, and further, a plurality of slot antennas are arranged in different directions of the lamp cup.

In the utility model, the slot antenna is a slot arranged on the lamp cup. The length l=1/4×λ of the slot, where λ is a wavelength of the wireless communication frequency, and the width of the slot is 2-4mm.

In the utility model, the radio frequency matching circuit and the impedance matching circuit are pi-type filter circuits formed by CLC.

In the utility model, the wireless SOC controller comprises a chip U1, wherein a pin 1 of the chip U1 is connected with the radio frequency matching circuit, and a GPIO pin of the chip U1 is connected with the radio frequency switch. Chip U1 is of the type ESP 32-C3.

In the utility model, the radio frequency switch comprises a chip U2, 13 pins of the chip U2 are connected with the radio frequency matching circuit, 5, 6 and 7 pins of the chip U2 are respectively connected with the wireless SOC controller, and an RF output pin of the chip U2 is connected with the impedance matching circuit. The chip U2 is SKY13414-485LF type.

In the utility model, the implementation method of the intelligent bulb lamp adopting the slot antenna array comprises the following steps:

firstly, arranging a plurality of slot antennas in different directions of a lamp cup to form a slot antenna array;

secondly, a GPIO pin of the wireless SOC controller is connected with a channel control pin of the radio frequency switch, and an RF output pin of the wireless SOC controller is connected with an input end of the radio frequency matching circuit;

the output end of the radio frequency matching circuit is connected with the input end of the radio frequency switch, and the output end of the radio frequency switch is connected with a plurality of impedance matching circuits;

fourth, the output end of the impedance matching circuit is connected with the corresponding slot antenna;

fifth, the wireless SOC controller controls the RF output of the chip U2 through the level of the GPIO port of the chip U1, compared with the prior art, the utility model has the following beneficial effects:

1. according to the utility model, the plurality of slot antennas are arranged in the intelligent bulb lamp to form the slot antenna array, so that the defects of using a solid antenna, avoiding light spots and shielding caused by the fact that the solid antenna extends out of the light source plate are avoided, meanwhile, the channels of the antenna are expanded, and the performance and directivity of the antenna are improved;

2. according to the utility model, the plurality of slot antennas are arranged in different directions of the lamp cup, so that each direction can be ensured to receive and transmit wireless signals, and the direction performance of the antennas is improved;

3. according to the utility model, the slot antenna is arranged at the lamp cup position, so that the directional performance of the antenna is improved under the condition that the area of the aluminum substrate is not lost;

4. the utility model adopts a slot antenna array mode, and can apply the intelligent bulb to indoor positioning, navigation and other applications.

Drawings

FIG. 1 is a control schematic diagram of the present utility model;

fig. 2 is a circuit diagram of the present utility model when four slot antennas are provided;

in the figure: 1. a wireless SOC controller; 2. a radio frequency matching circuit; 3. a radio frequency switch; 4. an impedance matching circuit; 5. a slot antenna.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Example 1

Referring to fig. 1-2, the present utility model provides the following technical solutions: the utility model provides an adopt intelligent ball bubble lamp of slot antenna array, including wireless SOC controller 1, wireless SOC controller 1's GPIO pin is connected with the passageway control pin of radio frequency switch 3, and wireless SOC controller 1's RF output pin is connected with the input of radio frequency matching circuit 2, and the output of radio frequency matching circuit 2 is connected with the input of radio frequency switch 3, and the output of radio frequency switch 3 is connected with a plurality of impedance matching circuit 4, and this embodiment is preferred four, and impedance matching circuit 4's output is connected with slot antenna 5.

Through adopting above-mentioned technical scheme, through setting up a plurality of slot antenna 5 in intelligent ball bubble lamp and constituteing the slot antenna array, avoided using entity antenna, avoid entity antenna to stretch out the facula that the light source board brought and shelter from the scheduling shortcoming, expanded the passageway of antenna simultaneously, promoted the performance and the directionality of antenna.

Specifically, the plurality of slot antennas 5 are arranged in different directions of the lamp cup.

By adopting the technical scheme, each direction can be ensured to receive and transmit wireless signals, and the direction performance of the antenna is improved.

Specifically, the wireless SOC controller 1 includes a chip U1, a pin 1 of the chip U1 is connected to the radio frequency matching circuit 2, and a GPIO pin of the chip U1 is connected to the radio frequency switch 3. Chip U1 is of the type ESP 32-C3.

Specifically, the radio frequency switch 3 includes a chip U2, 13 pins of the chip U2 are connected with the radio

frequency matching circuit

2, 5, 6 and 7 pins of the chip U2 are respectively connected with the wireless SOC controller 1, and an RF output pin of the chip U2 is connected with the impedance matching circuit 4. The chip U2 is SKY13414-485LF type.

Example 2

This embodiment differs from embodiment 1 in that: specifically, the slot antenna 5 is a slot formed on the lamp cup. The length l=1/4×λ of the slot, where λ is the wavelength of the wireless communication frequency, and the width of the slot is 2-4mm, in this embodiment, the radio frequency switch 3 selects a circuit using SKY13414-485LF as a core, and through theoretical calculation and actual matching and debugging, it is determined that the length of the slot antenna is 32mm, and the width of the slot is 3mm.

Example 3

This embodiment differs from embodiment 1 in that: specifically, the rf matching circuit 2 and the impedance matching circuit 4 are pi-type filter circuits formed by CLC.

In this embodiment, the radio frequency matching circuit 2 includes an inductor L3, one end of the inductor L3 is connected with a capacitor C5, the other end of the inductor L3 is connected with a capacitor C6, and the other ends of the capacitor C5 and the capacitor C6 are both connected with the GND end.

The first impedance matching circuit comprises an inductor L1, one end of the inductor L1 is connected with a capacitor C1, the other end of the inductor L1 is connected with a capacitor C2, and the other ends of the capacitor C1 and the capacitor C2 are connected with the GND end.

The second impedance matching circuit comprises an inductor L2, one end of the inductor L2 is connected with a capacitor C3, the other end of the inductor L2 is connected with a capacitor C4, and the other ends of the capacitor C3 and the capacitor C4 are connected with the GND end.

The third impedance matching circuit comprises an inductor L3, one end of the inductor L3 is connected with a capacitor C7, the other end of the inductor L3 is connected with a capacitor C8, and the other ends of the capacitor C7 and the capacitor C8 are connected with the GND end.

The fourth impedance matching circuit comprises an inductor L4, one end of the inductor L4 is connected with a capacitor C9, the other end of the inductor L4 is connected with a capacitor C10, and the other ends of the capacitor C9 and the capacitor C10 are connected with the GND end.

Further, the implementation method of the intelligent bulb lamp adopting the slot antenna array comprises the following steps:

firstly, arranging a plurality of slot antennas 5 in different directions of a lamp cup to form a slot antenna array;

secondly, a GPIO pin of the wireless SOC controller 1 is connected with a channel control pin of the radio frequency switch 3, and an RF output pin of the wireless SOC controller 1 is connected with an input end of the radio frequency matching circuit 2;

the output end of the radio frequency matching circuit 2 is connected with the input end of the radio frequency switch 3, and the output end of the radio frequency switch 3 is connected with a plurality of impedance matching circuits 4;

fourth, the output end of the impedance matching circuit 4 is connected with the corresponding slot antenna 5;

and fifthly, the wireless SOC controller 1 controls the on and off of the RF output pin of the chip U2 through the level of the GPIO port of the chip U1.

In summary, the utility model forms the slot antenna array by arranging the plurality of slot antennas 5 in the intelligent bulb lamp, avoids the use of the entity antenna, avoids the defects of facula, shielding and the like caused by the fact that the entity antenna extends out of the light source plate, expands the channels of the antenna, and improves the performance and directivity of the antenna; according to the utility model, the plurality of slot antennas 5 are arranged in different directions of the lamp cup, so that each direction can be ensured to receive and transmit wireless signals, and the directional performance of the antennas is improved; according to the utility model, the slot antenna 5 is arranged at the lamp cup position, so that the directional performance of the antenna is improved under the condition that the area of the aluminum substrate is not lost; the utility model adopts a slot antenna array mode, and can apply the intelligent bulb to indoor positioning, navigation and other applications.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An intelligent bulb lamp adopting a slot antenna array, which is characterized in that: the wireless SOC comprises a wireless SOC controller, wherein a GPIO pin of the wireless SOC controller is connected with a channel control pin of a radio frequency switch, an RF output pin of the wireless SOC controller is connected with an input end of a radio frequency matching circuit, an output end of the radio frequency matching circuit is connected with an input end of the radio frequency switch, an output end of the radio frequency switch is connected with a plurality of impedance matching circuits, and an output end of the impedance matching circuit is connected with a slot antenna.

2. An intelligent bulb lamp employing a slot antenna array as claimed in claim 1, wherein: the slot antennas are arranged in different directions of the lamp cup.

3. An intelligent bulb lamp employing a slot antenna array as claimed in claim 1, wherein: the slot antenna is a slot formed in the lamp cup.

4. A smart bulb lamp employing a slot antenna array as claimed in claim 3, wherein: the length l=1/4×λ of the slot, where λ is a wavelength of the wireless communication frequency, and the width of the slot is 2-4mm.

5. An intelligent bulb lamp employing a slot antenna array as claimed in claim 1, wherein: the radio frequency matching circuit and the impedance matching circuit are pi-type filter circuits formed by CLC.

6. An intelligent bulb lamp employing a slot antenna array as claimed in claim 1, wherein: the wireless SOC controller comprises a chip U1, wherein a pin 1 of the chip U1 is connected with the radio frequency matching circuit, and a GPIO pin of the chip U1 is connected with the radio frequency switch.

7. The intelligent bulb lamp employing a slot antenna array as claimed in claim 6, wherein: the chip U1 is of the ESP32-C3 type.

8. An intelligent bulb lamp employing a slot antenna array as claimed in claim 1, wherein: the radio frequency switch comprises a chip U2, 13 pins of the chip U2 are connected with the radio frequency matching circuit, 5, 6 and 7 pins of the chip U2 are respectively connected with the wireless SOC controller, and an RF output pin of the chip U2 is connected with the impedance matching circuit.

9. The intelligent bulb lamp employing a slot antenna array as claimed in claim 8, wherein: the chip U2 is SKY13414-485LF type.