CN-122028280-A - Lighting system

CN122028280ACN 122028280 ACN122028280 ACN 122028280ACN-122028280-A

Abstract

The application discloses a lamplight system, and relates to the technical field of lamplight systems. The lighting system comprises a plurality of lamps, and the lamps are communicated based on visible light. Each lamp comprises a lamp bead, a driving circuit, a human body sensing module, a light receiving module and a main control module. In the secondary mode, the main control module is used for controlling the driving circuit to drive the lamp beads to emit light in a first preset time period according to a preset modulation frequency so as to provide illumination and broadcast a modulated light signal when the ambient light intensity is determined to be lower than the preset threshold value according to a direct current component and the frequency of the received modulated light signal is determined to be in a deviation range of the preset modulation frequency according to an alternating current component so as to provide illumination. The application aims to reduce cost and power consumption.

Inventors

SHEN BINGXIAN
YE PIN
ZHANG ZHOU
XIA YUNFEI

Assignees

深圳市全智芯科技有限公司

Dates

Publication Date: 20260512
Application Date: 20260225

Claims (10)

1. A lighting system comprising a plurality of light fixtures, a plurality of said light fixtures being in communication with each other based on visible light, each of said light fixtures comprising: LED lamp beads; the LED driving circuit is electrically connected with the LED lamp beads and used for driving the LED lamp beads to emit light; The human body induction module is used for detecting human body activity information of the area where the lamp is positioned and outputting corresponding human body induction signals; The light receiving module is used for converting the received optical signal into an electric signal, wherein the electric signal comprises a direct current component used for representing the intensity of ambient light and an alternating current component used for representing optical communication information; the main control module is respectively connected with the controlled end of the LED driving circuit, the signal output end of the human body sensing module, the controlled end of the human body sensing module and the signal output end of the light receiving module, and is provided with a master mode and a slave mode; The main control module is configured to control the human body induction module to stop working when the ambient light intensity is not lower than a preset threshold value according to the direct current component, control the human body induction module to work when the ambient light intensity is lower than the preset threshold value according to the direct current component, and control the LED driving circuit to drive the LED lamp beads to perform modulation and lighting in a first preset time period according to a preset modulation frequency when the human body activity is determined to exist according to the human body induction signal so as to provide illumination and broadcast a modulated light signal, wherein the preset modulation frequency is not lower than 100Hz; And when the environment light intensity is determined to be lower than a preset threshold value according to the direct current component and the frequency of the received modulated light signal is determined to be within the deviation range of the preset modulation frequency according to the alternating current component, the main control module is configured to control the human body induction module to stop working, and the LED driving circuit is controlled to drive the LED lamp beads to emit light in the first preset time period so as to provide illumination.
2. The lighting system of claim 1, wherein the master control module is further preset with a master-slave mode in which the master control module is configured to: When the environment light intensity is determined to be lower than a preset threshold value according to the direct current component, the human body induction module is controlled to work, and when the human body activity is determined to exist according to the human body induction signal, the LED driving circuit is controlled to drive the LED lamp beads to perform modulation and luminescence according to the preset modulation frequency in a first preset time period so as to provide illumination and broadcast a modulated light signal, wherein the preset modulation frequency is not lower than 100Hz; when the ambient light intensity is determined to be lower than a preset threshold according to the direct current component and the received modulated light signal is determined to be within the deviation range of the preset modulation frequency according to the alternating current component, the LED driving circuit is controlled to drive the LED lamp beads to perform modulated light emission within a first preset time period according to the preset modulation frequency so as to provide illumination and broadcast the modulated light signal.
3. The lighting system of claim 1 or 2, wherein the master control module is further configured to suppress self-monitoring of the ac component when the LED light beads emit light.
4. The lighting system of claim 1, wherein in the master mode, the master control module is further configured to: Converting a preset control instruction into a modulation waveform according to a preset digital coding rule, wherein the modulation waveform is generated based on a preset switching frequency which is not lower than 100Hz; Controlling the LED driving circuit to drive the LED lamp beads to perform modulation and luminescence within a first preset time period according to the modulation waveform so as to provide illumination and broadcast a modulation light signal containing the preset control instruction; in the slave mode, the master module is configured to: Decoding the modulated optical signal to extract a control instruction contained therein when it is determined from the alternating current component that the frequency of the received modulated optical signal is within the deviation range of the preset switching frequency; And when the extracted control instruction is matched with the preset control instruction, controlling the LED driving circuit to drive the LED lamp beads to emit light in the first preset time period so as to provide illumination.
5. The lighting system of claim 4, wherein the predetermined digital encoding rules include at least one of on-off keying and manchester encoding.
6. The lighting system of claim 1, wherein the master control module is pre-stored with a plurality of preset modulation frequencies and respective corresponding first preset time periods; The plurality of preset modulation frequencies are 8 kHz, 9 kHz, 10kHz, 11 kHz, 12 kHz, 13 kHz, 14 kHz, 15 kHz and 16 kHz, respectively, each corresponding to a first preset time period of different duration.
7. The lighting system of claim 1, wherein the light receiving module comprises: A photodiode for receiving ambient light and converting it into a current signal; the input end of the transimpedance amplifying circuit is electrically connected with the photodiode, the output end of the transimpedance amplifying circuit is connected with the main control module, the transimpedance amplifying circuit is used for amplifying the current signal and converting the current signal into a voltage signal for output, and the voltage signal comprises a direct current component used for representing the intensity of ambient light and an alternating current component used for representing optical communication information.
8. The lighting system of claim 7, wherein the transimpedance amplification circuit comprises an operational amplifier, a first resistor, a second resistor, a third resistor, a first capacitor, and a second capacitor; The positive input end of the operational amplifier, the negative electrode of the photodiode and one end of the first resistor are connected with one end of the first capacitor, the negative input end of the operational amplifier, one end of the second resistor and one end of the third resistor are connected with one end of the second capacitor, the other end of the second resistor and the first power end of the operational amplifier are connected with the power input end of the transimpedance amplifying circuit, the output end of the operational amplifier, the other end of the first resistor and the other end of the first capacitor are connected with the main control module, and the other end of the second capacitor, the other end of the third resistor, the second power end of the operational amplifier and the negative electrode of the photodiode are grounded.
9. The lighting system of claim 1, wherein the human sensing module comprises at least one of a passive infrared sensor, a reflective infrared sensor, a microwave sensing sensor, and a voice recognition module.
10. The lighting system of claim 1, wherein the LED driving circuit comprises a fourth resistor, a fifth resistor, a sixth resistor, and a first switching tube; One end of the fourth resistor is connected with the LED lamp bead, the other end of the fourth resistor is connected with the first end of the first switching tube, the controlled end of the first switching tube, one end of the fifth resistor is connected with one end of the sixth resistor, the other end of the fifth resistor is connected with the main control module, and the other end of the sixth resistor and the second end of the first switching tube are grounded.

Description

Lighting system Technical Field The application relates to the technical field of lighting systems, in particular to a lighting system. Background Modern lighting systems are widely applied to various fields of smart home, commercial lighting, industrial automation and the like, and the functions of the modern lighting systems are gradually expanded from traditional basic lighting to intelligent control and environment perception. Particularly in human body induction lighting scenes, the lighting system can be automatically turned on or turned off according to the activity state of the personnel, so that the energy utilization efficiency is remarkably improved, and the convenience and comfort level of use are also enhanced. However, in the prior art, if the intelligent lighting system needs to implement wireless communication between devices, an additional wireless communication module, such as Wi-Fi, bluetooth, zigBee, or a dedicated radio frequency transceiver, is usually required. The scheme realizes information interaction among lamps to a certain extent, but because an additional wireless communication module is required to be arranged, the hardware cost of the system is increased, and the power consumption is higher. The foregoing is provided merely for the purpose of facilitating understanding of the technical solutions of the present application and is not intended to represent an admission that the foregoing is prior art. Disclosure of Invention The application mainly aims to provide a lamplight system, which aims to solve the problems of higher cost and higher power consumption of the existing lamplight system. In order to achieve the above object, the lighting system provided by the present application includes a plurality of lamps, wherein a plurality of lamps are based on visible light communication, and each lamp includes: LED lamp beads; the LED driving circuit is electrically connected with the LED lamp beads and used for driving the LED lamp beads to emit light; The human body induction module is used for detecting human body activity information of the area where the lamp is positioned and outputting corresponding human body induction signals; The light receiving module is used for converting the received optical signal into an electric signal, wherein the electric signal comprises a direct current component used for representing the intensity of ambient light and an alternating current component used for representing optical communication information; the main control module is respectively connected with the controlled end of the LED driving circuit, the signal output end of the human body sensing module, the controlled end of the human body sensing module and the signal output end of the light receiving module, and is provided with a master mode and a slave mode; The main control module is configured to control the human body induction module to stop working when the ambient light intensity is not lower than a preset threshold value according to the direct current component, control the human body induction module to work when the ambient light intensity is lower than the preset threshold value according to the direct current component, and control the LED driving circuit to drive the LED lamp beads to perform modulation and lighting in a first preset time period according to a preset modulation frequency when the human body activity is determined to exist according to the human body induction signal so as to provide illumination and broadcast a modulated light signal, wherein the preset modulation frequency is not lower than 100Hz; And when the environment light intensity is determined to be lower than a preset threshold value according to the direct current component and the frequency of the received modulated light signal is determined to be within the deviation range of the preset modulation frequency according to the alternating current component, the main control module is configured to control the human body induction module to stop working, and the LED driving circuit is controlled to drive the LED lamp beads to emit light in the first preset time period so as to provide illumination. In an embodiment, the master control module is further preset with a master-slave mode, and in the master-slave mode, the master control module is configured to: When the environment light intensity is determined to be lower than a preset threshold value according to the direct current component, the human body induction module is controlled to work, and when the human body activity is determined to exist according to the human body induction signal, the LED driving circuit is controlled to drive the LED lamp beads to perform modulation and luminescence according to the preset modulation frequency in a first preset time period so as to provide illumination and broadcast a modulated light signal, wherein the preset modulation frequency is not lower than 100Hz; when the ambient light intensity is det