A 24g millimeter wave sensor-based light control system

Abstract

The utility model discloses a kind of based on 24G millimeter wave sensor light control system, including radar detection module, MCU main control module, light drive module and power module, radar detection module emits radar detection signal to environment by 24G millimeter wave sensor, the human body existing in environment is perceived, obtains the original echo signal reflected from human body, and original echo signal is handled by algorithm, distance data and gesture information after processing are sent to MCU main control module, MCU main control module receives distance data and gesture information after processing, distance data and gesture information are filtered, and control signal is generated, light drive module receives control signal, according to control signal to generate different drive signal, drive signal is used to control luminaire to make luminaire switch different working state, power module is used to provide power supply for radar detection module, MCU main control module, light drive module, luminaire.

Description

Technical Field

[0001] This utility model relates to the field of intelligent lighting control technology, and in particular to a lighting control system based on a 24G millimeter-wave sensor. Background Technology

[0002] Intelligent lighting control is a smart home management technology that allows users to easily adjust the brightness and color temperature of indoor lights through preset programs or remote controls to adapt to different scenarios and needs. Through lighting control, users can create a warm and comfortable home atmosphere, or quickly switch to a bright and efficient application scenario when needed. In addition, intelligent lighting control also helps save energy and reduce unnecessary power consumption, making it an indispensable part of modern smart home systems.

[0003] In existing technologies, human presence is typically detected using infrared sensors, cameras, or voice control modules. Appropriate lighting conditions are then generated based on the person's movement trajectory and distance. While infrared sensors can emit infrared light and detect the environment through the reflected light, they are susceptible to interference in certain environments, potentially leading to false alarms or missed alarms. Furthermore, infrared sensors have a limited detection range, making them inflexible for lighting control in larger spaces. Therefore, a more reliable and adaptable technology is needed to meet the lighting control requirements of modern smart homes. Utility Model Content

[0004] In view of the problems of limited detection range, slow detection speed and low accuracy of infrared sensors, cameras or voice control used in the above-mentioned technologies, which result in low flexibility and response speed of lighting control, this utility model provides a lighting control system based on a 24G millimeter wave sensor.

[0005] To achieve the above objectives, this utility model provides a lighting control system based on a 24G millimeter-wave sensor, comprising:

[0006] The radar detection module transmits radar detection signals to the environment through a 24G millimeter-wave sensor, senses the presence of human bodies in the environment, acquires the raw echo signals reflected back from the human bodies, processes the raw echo signals using algorithms, and sends the processed distance data and gesture information to the MCU main control module.

[0007] The MCU main control module receives processed distance data and gesture information, filters the distance and gesture information, and generates control signals.

[0008] The lighting driver module receives control signals and generates different drive signals based on the control signals. The drive signals are used to control the lighting fixtures so that the lighting fixtures switch between different working states.

[0009] The power module provides power to the radar detection module, MCU main control module, lighting driver module, and lighting fixtures.

[0010] As an improvement of this utility model, the MCU main control module includes an MCU main control circuit, which includes a main control chip; the radar detection module includes a radar detection circuit, which includes a radar detection sensor; the lighting drive module includes a lighting drive circuit; and the power supply module includes a power supply circuit, which includes a voltage regulator chip.

[0011] As an improvement of this utility model, the radar detection circuit includes a first detection pin, a second detection pin, and a third detection pin of the radar detection sensor, as well as a first communication pin and a second communication pin. The first detection pin is externally connected to a 3.3V voltage and connected to one end of a first capacitor. The second and third detection pins are connected to the other end of the first capacitor and grounded. The first and second communication pins are respectively coupled to the first and second receiving pins of the main control chip.

[0012] As an improvement of this utility model, the lamp driving circuit includes multiple LEDs connected in series, the grounding terminals of the multiple LEDs are jointly coupled to ground, the input terminals and output terminals of the multiple LEDs are jointly coupled to the drive enable pin of the main control chip, and the power supply terminals of the multiple LEDs are jointly coupled to an external +5V voltage.

[0013] As an improvement of this utility model, the voltage regulator chip includes a power input pin, a power output pin, and a power ground pin. The power output pin is coupled to an external +5V power supply voltage along with one end of the second capacitor and one end of the third capacitor. The power output pin is coupled to VCC +3.3V voltage along with one end of the fourth capacitor and one end of the fifth capacitor. The power ground pin is coupled to ground along with the other ends of the second capacitor, the third capacitor, the fourth capacitor, and the fifth capacitor.

[0014] As an improvement of this utility model, the MCU main control circuit adopts the STM8S001J3M3TR main control chip, the radar detection circuit adopts the XenG101G, and the power supply circuit adopts the AMS1117-3.3_C917183 voltage regulator chip.

[0015] As an improvement of this utility model, the lamp includes LED beads or W2811 light strip.

[0016] As an improvement of this utility model, the power supply module converts 220V AC to 12V AC to power the lighting drive module, and then converts the 12V AC to 3.3V AC through an LDO to power the radar detection module and the MCU main control module.

[0017] The beneficial effects of this utility model are as follows: Compared with the prior art, this utility model provides a lighting control system based on a 24G millimeter-wave sensor, including a radar detection module, an MCU main control module, a lighting drive module, and a power supply module. The radar detection module transmits radar detection signals to the environment and processes the raw echo signals using algorithms. The processed distance data and gesture information are sent to the MCU main control module. The MCU main control module filters the distance and gesture information and generates control signals. The lighting drive module receives the control signals to generate different drive signals, which are used to control the lamps so that the lamps switch between different working states. The power supply module provides power to the radar detection module, the MCU main control module, the lighting drive module, and the lamps. This utility model provides highly reliable human presence perception and accurate distance measurement by setting up a 24G millimeter-wave radar, which is significantly better than traditional sensors such as infrared and sound control. Through the accuracy of the millimeter-wave radar, the lighting system can be intelligently controlled to realize automatic adjustment and scene switching of the lights. The brightness of the lights can be automatically adjusted according to the environmental information, effectively reducing the energy consumption. Attached Figure Description

[0018] Figure 1 This is a module interaction diagram of the present utility model;

[0019] Figure 2 This is the MCU main control circuit diagram of this utility model;

[0020] Figure 3 This is a radar detection circuit diagram of the present invention;

[0021] Figure 4 This is the power supply circuit diagram of this utility model;

[0022] Figure 5 This is the circuit diagram of the lamp driving circuit of this utility model. Detailed Implementation

[0023] To more clearly illustrate this utility model, the following description, in conjunction with the accompanying drawings, will provide a further picture.

[0024] In the following description, specific examples are given to provide a more in-depth understanding of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of them. It should be understood that the specific embodiments described are only used to explain the present invention and are not intended to limit the present invention.

[0025] It should be understood that when the terms “comprising” and / or “including” are used in this specification, they indicate the presence of the said feature, integral, step, operation, element, or component, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, or combinations thereof.

[0026] Please see Figure 1-5 The present invention relates to a lighting control system based on a 24G millimeter-wave sensor, comprising:

[0027] The radar detection module transmits radar detection signals to the environment through a 24G millimeter-wave sensor, senses the presence of human bodies in the environment, acquires the raw echo signals reflected back from the human bodies, processes the raw echo signals using algorithms, and sends the processed distance data and gesture information to the MCU main control module.

[0028] The MCU main control module receives the processed distance data and gesture information, filters the distance data and gesture information, and generates control signals.

[0029] The lighting driver module receives control signals and generates different drive signals based on the control signals. The drive signals are used to control the lighting fixtures so that the lighting fixtures switch between different working states.

[0030] The power module provides power to the radar detection module, MCU main control module, lighting driver module, and lighting fixtures.

[0031] This invention uses a radar monitoring module to detect information in the environment. By emitting radar sound wave signals and receiving and analyzing the reflected signals, it achieves precise measurement of parameters such as distance, speed, and shape of target objects. The 24G millimeter-wave radar features high sensitivity and strong anti-interference capabilities, enabling stable operation in complex and changing environmental conditions. Simultaneously, through a built-in intelligent algorithm, it can automatically identify and filter out irrelevant interference information, ensuring the accuracy and reliability of the monitoring data. The 24G millimeter-wave radar provides highly reliable human presence detection and precise distance measurement, significantly outperforming traditional sensors and detection devices such as infrared, cameras, and voice control. The MCU main control module filters the processed distance data and gesture information, effectively eliminating interference received during the return of the original echo signal to improve data accuracy and stability. Based on the filtered distance data and gesture information, the MCU main control module uses preset algorithm logic to determine and generate corresponding lighting effect control signals. For example, when a human body is detected approaching a mirror, the MCU main control module linearly adjusts the lighting drive module according to the distance data. The control signal controls the lighting driver module to adjust the brightness of the lamps, achieving the effect of brighter light as the distance increases. Furthermore, if the radar detection module captures specific gesture information, the MCU main control module can recognize and execute corresponding lighting control commands, such as turning lights on and off, and adjusting lighting modes, providing users with a more intelligent and convenient lighting control experience. The lighting driver module receives the control signal output from the MCU main control module and outputs a drive signal to promptly switch the lamps to the corresponding lighting state. The efficient response of the lighting driver module ensures the real-time and accuracy of lighting control, enabling the entire lighting system to make rapid and reasonable adjustments based on human dynamic behavior, bringing users a comfortable and intelligent lighting experience. The power module converts AC220V to 12V to power the display driver LED strip, and the 12V is converted to 3.3V via an LDO to power the MCU main control module and the radar detection module. This invention has a wide range of applications, including corridors, staircases, restrooms, storage rooms, garages, office workstations, parts of living rooms, smart homes, and other scenarios requiring intelligent and energy-saving lighting. It also supports multi-target and regional control and has good scalability.

[0032] In this embodiment, the MCU main control module includes an MCU main control circuit, which includes a main control chip U3; the radar detection module includes a radar detection circuit, which includes a radar detection sensor U5; the lighting drive module includes a lighting drive circuit; and the power supply module includes a power supply circuit, which includes a voltage regulator chip U1. The MCU main control chip U3, as the core of the entire sensing system, is primarily responsible for processing data from the radar detection module and controlling the working state of the lighting drive module based on environmental information collected by the radar detection sensor U5. The radar detection sensor U5 is responsible for real-time detection of the dynamics of objects or people in the surrounding environment, ensuring that the lighting fixtures can respond promptly and adjust the lighting range or brightness. The lighting drive circuit precisely controls the switching, brightness adjustment, and other functions of the lighting fixtures according to the instructions issued by the MCU main control chip U3. The voltage regulator chip U1 in the power supply circuit ensures that the entire system operates in a stable voltage environment, avoiding system abnormalities or lighting fixture damage due to voltage fluctuations. These modules work together to achieve efficient and stable operation of the intelligent lighting fixtures.

[0033] In this embodiment, the radar detection circuit includes a first detection pin (equivalent to pin 1 of radar detection sensor U5), a second detection pin (equivalent to pin 2 of radar detection sensor U5), and a third detection pin (equivalent to pin 3 of radar detection sensor U5), as well as a first communication pin (equivalent to pin 4 of radar detection sensor U5) and a second communication pin (equivalent to pin 5 of radar detection sensor U5). The first detection pin is externally connected to a 3.3V voltage and connected to one end of a first capacitor C6. The second and third detection pins are connected to the other end of the first capacitor C6 and grounded. The first and second communication pins are coupled to the first and second receiving pins of the main control chip U3, respectively. The radar detection circuit detects signals from the radar detection sensor U5. The first detection pin enables radar signal detection of the surrounding environment. The 3.3V voltage connected to the first detection pin provides a stable operating voltage for the radar detection sensor U5. The first capacitor C6 acts as a filter to reduce the impact of voltage fluctuations on the chip. The second and third detection pins are grounded together, forming a reference potential for radar signal detection. The first and second communication pins are coupled to the first receiving pin (equivalent to pin 8 of the main control chip U3) and the second receiving pin (equivalent to pin 1 of the radar main control chip U3) of the main control chip U3, which enables data transmission between the radar detection sensor U5 and the main control chip U3. This allows the main control chip U3 to acquire the detection results of the radar detection sensor U5 in real time, thereby further processing and analyzing the collected environmental information.

[0034] In this embodiment, the lighting drive circuit includes multiple LEDs connected in series. The grounding terminals of the multiple LEDs are all coupled to ground, and the input and output terminals of the multiple LEDs are all coupled to the drive enable pin of the main control chip U3 (equivalent to pin 4 of the main control chip U3). The power supply terminals of the multiple LEDs are all coupled to an external +5V voltage. The main control chip U3 controls the switching of the LED group by controlling the level state of the drive enable pin. When a lighting control command is sent, the external +5V voltage supplies power to the LED group through the power supply terminal, and the LED group lights up. When a lighting control command is sent, the LED group is powered off and turns off. In addition, the drive circuit also has an overcurrent protection mechanism. When the operating current of the LED group exceeds a preset threshold, the protection mechanism is activated, automatically cutting off the power supply to prevent the LEDs from being damaged due to overcurrent.

[0035] In this embodiment, the voltage regulator chip U1 includes a power input pin (equivalent to pin 3 of the voltage regulator chip U1), a power output pin (equivalent to pin 4 of the voltage regulator chip U1), and a power ground pin (equivalent to pin 1 of the voltage regulator chip U1). The power output pin is coupled to an external +5V power supply voltage along with one end of the second capacitor C3 and one end of the third capacitor C4. The power output pin is coupled to VCC +3.3V voltage along with one end of the fourth capacitor C1 and one end of the fifth capacitor C2. The power ground pin is coupled to ground along with the other ends of the second capacitor C3, the third capacitor C4, the fourth capacitor C1, and the fifth capacitor C2. The voltage regulator chip U1 is mainly used to provide a stable voltage output to ensure that other modules can work normally. By automatically adjusting the output voltage when the input voltage fluctuates, it enables the components in the circuit to operate in a stable voltage environment, avoiding performance degradation or damage caused by voltage instability.

[0036] In this embodiment, the MCU main control circuit uses the STM8S001J3M3TR main control chip U3, the radar detection sensor U5 uses the XenG101G, and the power supply circuit uses the AMS1117-3.3_C917183 voltage regulator chip U1. The MCU main control chip U3 features high performance and low power consumption, and can efficiently process the data collected by the radar sensor and perform real-time analysis. The XenG101G radar detection sensor U5, with its high-precision ranging capability and stable performance, ensures the reliable operation of the equipment in various environments. The AMS1117-3.3_C917183 voltage regulator chip U1 provides a stable power supply voltage, ensuring the stability and reliability of the entire circuit.

[0037] In this embodiment, the luminaire includes LED beads or W2811 light strips. LED beads are characterized by high brightness and low power consumption, and can adjust brightness according to different distance sensing signals to achieve intelligent lighting control. LED beads also have the advantages of long life, high luminous efficiency, and environmental protection and energy saving. W2811 light strips, with their good flexibility and uniform light distribution, provide more possibilities for lighting design. Through the precise control of the MCU main control chip, the luminaire can automatically adjust the light brightness according to the human distance information obtained by the radar detection circuit, providing users with a more comfortable and energy-saving lighting experience.

[0038] In this embodiment, the power supply module converts 220V AC to 12V AC to power the lighting driver module, and then converts the 12V AC to 3.3V AC via an LDO to power the radar detection module and the MCU main control module. To ensure the stable output of the overall working circuit, the power supply module reduces the 220V AC to 12V, which is sufficient for the lighting driver module. At the same time, it further reduces the 12V AC to 3.3V to power the radar detection module and the MCU main control module. The AC-DC conversion technology enables stable step-down switching of the AC power supply. Example

[0039] Application scenarios for home grooming mirrors and makeup mirrors:

[0040] ①A window is cut out at the bottom center of the mirror after removing the silver plating layer; a 24G radar sensor is installed behind the mirror.

[0041] ②When the 24G radar sensor detects a human body approaching, the light strip lights up from the middle outwards in a continuous burst.

[0042] ③ When a person moves closer to the mirror, the light changes linearly with distance; the closer the person is, the brighter the light becomes.

[0043] ④ When a person stands in front of a mirror, they can switch the color temperature of the light strip by sliding their hand about 20cm away. The light strip cycles through cool white, natural light, and warm yellow.

[0044] ⑤ Once the person is away from the mirror and no one is detected, the light stays at its lowest brightness for 2 seconds, and then the light strip turns off from both ends toward the middle.

[0045] Based on the linkage between the human presence detection and the lighting control system, the lights turn on when a person approaches and turn off when a person moves away. The brightness adapts to the distance of the person, becoming brighter the closer they are and dimmer the further away they are.

[0046] The working principle of this utility model is as follows:

[0047] 1. Power-on initialization: MCU main control module, light driver module, and radar detection module;

[0048] The 2.24G millimeter-wave radar continuously scans the monitored area to acquire raw echo signals;

[0049] 3. The radar module performs signal preprocessing (filtering, FFT, etc.), extracts target information (distance, speed, energy intensity, angle, etc.), and performs preliminary target detection, classification (human / non-human) and presence determination;

[0050] 4. The MCU main control module receives radar information, processes the received data, and performs corresponding linkage operations based on the data, such as adjusting brightness / turning lights on / off and running lights.

[0051] 5. Output the preceding linkage information to the LED display driver;

[0052] 6. Return to step 2 and repeat.

[0053] The advantages of this utility model are:

[0054] 1. This utility model provides highly reliable human presence detection and accurate distance measurement by setting up a 24G millimeter-wave radar, which is significantly better than traditional sensors such as infrared and voice control. Through the accuracy of millimeter-wave radar, the lighting system can be intelligently controlled to realize automatic adjustment of lights and scene switching, and automatically adjust the brightness of lights according to environmental information, effectively reducing working energy consumption.

[0055] The above-disclosed embodiments are only a few specific examples of this utility model. However, this utility model is not limited thereto. Any variations that can be conceived by those skilled in the art should fall within the protection scope of this utility model.

Claims

1. A lighting control system based on a 24G millimeter-wave sensor, characterized in that, include, The radar detection module transmits radar detection signals to the environment through a 24G millimeter-wave sensor, senses the presence of human bodies in the environment, acquires the raw echo signals reflected back from the human bodies, processes the raw echo signals using algorithms, and sends the processed distance data and gesture information to the MCU main control module. The MCU main control module receives processed distance data and gesture information, filters the distance and gesture information, and generates control signals. The lighting driver module receives the control signal and, according to the control signal... Different driving signals are generated to control the lamps so that the lamps switch between different working states; The power supply module is used to power the radar detection module, the MCU main control module, and The lighting driver module and the lighting fixture are powered.

2. The lighting control system based on a 24G millimeter-wave sensor according to claim 1, characterized in that, The MCU main control module includes an MCU main control circuit, which includes a main control chip; the radar detection module includes a radar detection circuit, which includes a radar detection sensor; the lighting drive module includes a lighting drive circuit; and the power supply module includes a power supply circuit, which includes a voltage regulator chip.

3. A lighting control system based on a 24G millimeter-wave sensor according to claim 2, characterized in that, The radar detection circuit includes a first detection pin, a second detection pin, and a third detection pin of the radar detection sensor, as well as a first communication pin and a second communication pin. The first detection pin is externally connected to a 3.3V voltage and connected to one end of a first capacitor. The second detection pin and the third detection pin are connected to the other end of the first capacitor and grounded. The first communication pin and the second communication pin are respectively coupled to the first receiving pin and the second receiving pin of the main control chip.

4. A lighting control system based on a 24G millimeter-wave sensor according to claim 2, characterized in that, The lighting drive circuit includes multiple LEDs connected in series, the ground terminals of the multiple LEDs are all coupled to ground, and the input and output terminals of the multiple LEDs are all coupled to the drive enable pin of the main control chip. The power supply terminals of multiple LEDs are coupled to an external +5V voltage.

5. A lighting control system based on a 24G millimeter-wave sensor according to claim 2, characterized in that, The voltage regulator chip includes a power input pin, a power output pin, and a power ground pin. The power output pin is coupled to an external +5V power supply voltage along with one end of the second capacitor and one end of the third capacitor. The power output pin is coupled to VCC +3.3V voltage along with one end of the fourth capacitor and one end of the fifth capacitor. The power ground pin is coupled to ground along with the other ends of the second capacitor, the third capacitor, the fourth capacitor, and the fifth capacitor.

6. A lighting control system based on a 24G millimeter-wave sensor according to claim 2, characterized in that, The MCU main control circuit uses an STM8S001J3M3TR main control chip, the radar detection circuit uses a XenG101G radar detection sensor, and the power supply circuit uses an AMS1117-3.3_C917183 voltage regulator chip.

7. A lighting control system based on a 24G millimeter-wave sensor according to claim 1, characterized in that, The lighting fixtures include LED beads or W2811 light strips.

8. A lighting control system based on a 24G millimeter-wave sensor according to claim 1, characterized in that, The power module converts 220V AC to 12V AC to power the lighting drive module, and then converts the 12V AC to 3.3V AC via an LDO to power the radar detection module and the MCU main control module.

Images