LED driving circuit with adaptive motion detection mode

Abstract

The utility model discloses a kind of LED drive circuit of self-adaptive adjustment motion detection mode, including driving power supply and two motion detection sensors, driving power supply is connected with voltage stabilizer and LED light source respectively, voltage stabilizer is connected with photosensitive sensor and MCU control chip respectively, MCU control chip is connected with photosensitive sensor, two motion detection sensors and driving power supply respectively.The utility model detects the ambient light data in 24 hours through photosensitive sensor after power-on, to judge whether current environment is located indoors or outdoors, to match corresponding motion detection sensor, realize the false triggering of reducing luminaire, improve the performance and use experience of luminaire.The utility model is when detecting human motion, LED light source is lighted, if personnel leave after 30 seconds, then LED light source is extinguished, if there is always personnel activity, then continuously light, effectively reduce the situation of forgetting to turn off light or not easy to find power switch in dark, and energy-saving effect is good.

Description

Technical Field

[0001] This utility model belongs to the field of photoelectric detection technology, specifically relating to an LED driving circuit with an adaptive motion detection method. Background Technology

[0002] Currently, most lighting fixtures on the market that can be used indoors or in semi-outdoor environments such as corridors use a single type of sensor. However, we cannot know the actual usage environment of the end user. If microwave sensor lighting fixtures are installed outdoors or in semi-outdoor environments, even the slightest breeze can cause the lighting fixtures to be falsely triggered. If infrared pyroelectric sensor lighting fixtures are installed indoors, factors such as air conditioning and hot air can also affect the sensor performance, making it easy to miss detections.

[0003] Therefore, there is an urgent need for an LED driver circuit that can adaptively adjust the motion detection method to determine whether the current environment is indoors or outdoors, and thus automatically match the corresponding motion detection sensor to reduce false triggering of the lamps. Utility Model Content

[0004] The purpose of this invention is to provide an LED driver circuit with an adaptive motion detection method to solve the problems mentioned in the background art. The LED driver circuit with an adaptive motion detection method provided by this invention can determine whether the current environment is indoors or outdoors, and thus automatically match the corresponding motion detection sensor to reduce false triggering of the lamps.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an LED driving circuit with an adaptive motion detection mode, comprising a driving power supply and two motion detection sensors. The driving power supply is connected to a voltage regulator and an LED light source, respectively. The voltage regulator is connected to a photosensitive sensor and an MCU control chip, respectively. The MCU control chip is connected to the photosensitive sensor, the two motion detection sensors, and the driving power supply, respectively.

[0006] Furthermore, in this invention, the voltage regulator is a linear voltage regulator.

[0007] Furthermore, in this invention, the two motion detection sensors are an infrared pyroelectric sensor and a microwave sensor, respectively.

[0008] In this invention, the infrared pyroelectric sensor is the default detection sensor.

[0009] Furthermore, in this invention, the driving power supply is an LED driver with an auxiliary power supply and a dimming interface.

[0010] Furthermore, in this invention, the photosensitive sensor is a dual-channel photosensitive sensor, which integrates a low-band photosensitive sensor and a high-band photosensitive sensor.

[0011] Furthermore, in this invention, the photosensor determines whether the current environment is indoors or outdoors within 24 hours of power-on.

[0012] Furthermore, in this invention, the MCU control chip reads and stores the data from the dual channels of the photosensitive sensor every 5 minutes, takes the average value of the obtained dual channel data every 1 hour, and calculates the ratio of the average values ​​of the dual channels.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model detects ambient light data within 24 hours through a photosensitive sensor after power-on, thereby determining whether the current environment is indoors or outdoors, and matching the corresponding motion detection sensor to reduce false triggering of lamps, improve lamp performance and user experience.

[0015] 2. When human movement is detected, the LED light source of this utility model is turned on. If the person leaves after 30 seconds, the LED light source is turned off. If there is continuous human activity, the light source will remain on, which effectively reduces the situation of forgetting to turn off the light or not being able to find the power switch in the dark, and has a good energy-saving effect. Attached Figure Description

[0016] Figure 1 This is a connection block diagram of the present invention.

[0017] In the diagram: 1. Power supply; 2. Voltage regulator; 3. Photosensitive sensor; 4. Infrared pyroelectric sensor; 5. Microwave sensor; 6. MCU control chip; 7. LED light source. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0020] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0021] In the description of this utility model, the terms "upper," "lower," "right," and "left," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are merely used for distinction in description and have no special meaning.

[0022] Example 1

[0023] Please see Figure 1 This embodiment provides the following technical solution: an LED driving circuit with adaptive motion detection mode, including a driving power supply 1, an infrared pyroelectric sensor 4, and a microwave sensor 5. The infrared pyroelectric sensor 4 is the default detection sensor, and the infrared pyroelectric sensor 4 is a D220AX model PIR sensor from Shenzhen Quanzhixin Technology Co., Ltd. The microwave sensor 5 is an EDC116 module from Shenzhen Yitan Technology Co., Ltd. The driving power supply 1 is an LED driver with auxiliary power supply and dimming interface, and the driving power supply 1 is a BQE from Dongguan Beiqi Electronics Technology Co., Ltd. The 155C-130-PVF-AUX model has its input terminal of the drive power supply 1 connected to the mains power. The drive power supply 1 is connected to the voltage regulator 2 and the LED light source 7. The voltage regulator 2 is a linear voltage regulator, and the linear voltage regulator 2 is selected from the AS7133 series LDO of Shenzhen Quanzhixin Technology Co., Ltd. The voltage regulator 2 is connected to the photosensitive sensor 3 and the MCU control chip 6. The MCU control chip 6 is selected from the HC89F0322 microcontroller of Shanghai Xinsheng. The MCU control chip 6 is connected to the photosensitive sensor 3, the infrared pyroelectric sensor 4, the microwave sensor 5, and the drive power supply 1.

[0024] By adopting the above technical solution, this utility model uses a photosensor 3 to detect ambient light data over 24 hours after power-on, thereby determining whether the current environment is indoors or outdoors. This allows for the matching of a corresponding motion detection sensor, reducing false triggering of the lamps and improving their performance and user experience. When human movement is detected, the LED light source 7 illuminates. If the person leaves after 30 seconds, the LED light source 7 turns off. If there is continuous human activity, it remains lit, effectively reducing the chances of forgetting to turn off the lights or difficulty finding the power switch in the dark, resulting in good energy-saving performance.

[0025] Example 2

[0026] The difference between this embodiment and Embodiment 1 is that, specifically, the photosensor 3 is a dual-channel photosensor, integrating a low-band photosensor and a high-band photosensor. Within 24 hours of power-on, the MCU control chip 6 reads and stores the dual-channel data from the photosensor 3 every 5 minutes. Every hour, it takes the average value of the acquired dual-channel data and calculates the ratio of the two average values ​​to determine whether the current environment is indoors or outdoors. The photosensor 3 uses the ULTRACAPTEUR UCS11161 photosensor.

[0027] By adopting the above technical solution, the infrared pyroelectric sensor 4 is activated by default after the lamp is powered on. Within 24 hours of the lamp being powered on, the MCU control chip 6 reads and stores the dual-channel data of the photosensitive sensor 3 every 5 minutes. Every hour, the average value of the obtained dual-channel data is taken, and the ratio of the dual-channel average values ​​is calculated. If the ratio is less than 55, it is determined to be outdoor; otherwise, it is determined to be indoor. After 24 hours, the outdoor count value and the indoor count value are compared. If the indoor count value is greater than or equal to 20, the microwave sensor 5 is activated, and the infrared pyroelectric sensor 4 does not work. If the outdoor count value is greater than or equal to 20, the infrared pyroelectric sensor 4 is activated, and the microwave sensor 5 does not work. If both the indoor and outdoor count values ​​are less than 20, the infrared pyroelectric sensor 4 and the microwave sensor 5 are activated simultaneously. The LED light source 7 will only light up when both sensors are triggered.

[0028] In summary, this invention uses a photosensor 3 to detect ambient light data over 24 hours after power-on, thereby determining whether the current environment is indoors or outdoors. This allows for the matching of a corresponding motion detection sensor, reducing false triggering of the lights and improving their performance and user experience. When human movement is detected, the LED light source 7 illuminates. If the person leaves after 30 seconds, the LED light source 7 turns off. If there is continuous human activity, it remains lit, effectively reducing the chances of forgetting to turn off the lights or difficulty finding the power switch in the dark, resulting in good energy-saving performance.

[0029] Although embodiments of the present invention 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 to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An LED driving circuit with an adaptive motion detection method, characterized in that: It includes a power supply and two motion detection sensors. The power supply is connected to a voltage regulator and an LED light source, respectively. The voltage regulator is connected to a photosensitive sensor and an MCU control chip, respectively. The MCU control chip is connected to the photosensitive sensor, the two motion detection sensors, and the power supply, respectively.

2. The LED driving circuit with adaptive motion detection mode according to claim 1, characterized in that: The voltage regulator is a linear voltage regulator.

3. The LED driving circuit with adaptive motion detection method according to claim 1, characterized in that: The two motion detection sensors are an infrared pyroelectric sensor and a microwave sensor.

4. The LED driving circuit with adaptive motion detection mode according to claim 3, characterized in that: The infrared pyroelectric sensor is the default detection sensor.

5. The LED driving circuit with adaptive motion detection method according to claim 1, characterized in that: The driving power supply is an LED driver with an auxiliary power supply and a dimming interface.

6. The LED driving circuit with adaptive motion detection method according to claim 1, characterized in that: The photosensitive sensor is a dual-channel photosensitive sensor, which integrates a low-band photosensitive sensor and a high-band photosensitive sensor.

7. The LED driving circuit with adaptive motion detection mode according to claim 6, characterized in that: The photosensitive sensor determines whether the current environment is indoors or outdoors within 24 hours of being powered on.

8. The LED driving circuit with adaptive motion detection mode according to claim 7, characterized in that: The MCU control chip reads and stores the data from the dual channels of the photosensitive sensor every 5 minutes, and takes the average value of the obtained dual channel data every 1 hour, and calculates the ratio of the dual channel average values.

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