A wireless controlled LED light sensing circuit

Abstract

The present invention discloses a wirelessly controlled LED lamp sensing circuit, comprising a rectifier bridge, a low-voltage DC power supply module, a control module, a light-emitting module, a sensing module, a wireless module and a client, wherein the rectifier bridge supplies power to the light-emitting module after rectification. Compared with the adjustable potentiometer method, the wirelessly controlled LED lamp sensing circuit can accurately adjust various sensing parameters through a mobile phone APP or a controller method, because the adjustable potentiometer is not used, so that the deviation of the sensing parameters between the LED lamps is small, and it is not easy to trigger by mistake, and it can also achieve what you see is what you get, and the sensing parameters corresponding to the set values ​​can be known without testing the LED lamp. After the user installs the LED lamp, it is also relatively easy to modify it again, and it only needs to be operated on the mobile phone APP or the controller. At the same time, the infrared sensing LED lamp can also be set as a light-controlled lamp, a sensing lamp or an ordinary lamp through the mobile phone APP or the controller, so as to achieve the result of one lamp with multiple uses.

Description

Technical Field

[0001] The present invention relates to the technical field of LED lamps, and more particularly to a wirelessly controlled LED lamp induction circuit. Background Art

[0002] Traditional LED sensor lights use adjustable potentiometers to adjust delay time, sensor sensitivity and light intensity. There are three problems:

[0003] First, the resistance deviation of the adjustable potentiometer knob when it is adjusted to the same position is large, with an error of 30%, resulting in large deviations in the adjustment of the sensing parameters between the LED lights. In particular, the deviation in the sensing sensitivity is too large, which will lead to false triggering, and the LED light will light up when it should not light up, and will not light up when it should light up;

[0004] Second, after the adjustable potentiometer knob is adjusted to a certain position, the actual sensing parameter value corresponding to it is unknown. It is necessary to test the LED light to determine whether it is the desired value. If it is not the set value, it is necessary to adjust the knob position again and test again.

[0005] Third, it is very inconvenient to modify the sensing parameters again after the user has installed the LED lamp. Summary of the invention

[0006] In view of the deficiencies in the prior art, the object of the present invention is to provide a wirelessly controlled LED lamp sensing circuit, which has the characteristics of high accuracy in adjusting sensing parameters and easy modification and monitoring of sensing parameters.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A wireless controlled LED lamp sensing circuit comprises a rectifier bridge, a low voltage DC power supply module, a control module, a light emitting module, a sensing module, a wireless module and a client;

[0009] The rectifier bridge supplies power to the light-emitting module after rectification;

[0010] The low-voltage DC power supply module supplies power to the wireless module and the control module respectively with the power rectified by the rectifier bridge;

[0011] The control module receives and processes the sensing parameters from the wireless module and the sensing signal from the sensing module, and then outputs a dimming signal to the light-emitting module after calculation by an algorithm preset in the control module;

[0012] The sensing parameters in the sensing module are adjusted through the client.

[0013] Furthermore, the lighting module receives a dimming signal from the control module, and the dimming signal controls the LED lamp to emit light or not.

[0014] Through the above technical solution, when the dimming signal is high, the LED light string emits light, and when the dimming signal is low, the LED light string does not emit light.

[0015] Furthermore, the light emitting module is composed of an LED light string, a MOS tube Q1, an operational amplifier OP1 and a current regulating resistor Rcs.

[0016] Furthermore, the low-voltage DC power supply module steps down the line voltage through the resistor R1, the filter capacitor C1 and the voltage regulator diode ZD1 and outputs it to the low-voltage difference linear regulator LDO, and then the output of the low-voltage difference linear regulator LDO is filtered by the filter capacitor C2 and output to the control module, the wireless module and the infrared sensing module for power supply.

[0017] Through the above technical solution, the low voltage difference linear regulator LDO outputs 3.3V, which is filtered by the filter capacitor C2 and then output to power the control module, wireless module and infrared sensing module; at the same time, a switching power supply or other linear regulated power supply can also be used for power supply.

[0018] Furthermore, the model of the low voltage dropout linear regulator is HT7533.

[0019] Furthermore, the wireless module demodulates the sensing parameters and outputs them to the control module. The sensing parameters are composed of a sensing sensitivity adjustment value SENS, a light intensity adjustment value LUX, a delay time TIME, a control instruction CMD and a brightness adjustment instruction.

[0020] Through the above technical solution, wireless data sent by a mobile phone APP or other controller is received, and the sensing parameters are demodulated and output to the control module. The sensing parameters are composed of the sensing sensitivity adjustment value SENS, the illuminance adjustment value LUX, the delay time TIME, the control instruction CMD and the brightness adjustment instruction. The control instruction CMD controls the LED lamp to work in three modes, which are divided into light control mode, sensing mode and ordinary LED lamp mode.

[0021] Further, the control instruction CMD controls the LED lamp to operate in a light control mode, a sensing mode or a normal LED lamp mode;

[0022] Light control mode, the LED light turns on or off the light module according to the ambient light illumination;

[0023] Induction mode: When the ambient light is lower than the LUX setting value and human movement is detected, the LED light turns on the light module for auxiliary lighting, and turns off the light module after the lighting time set by TIME.

[0024] Normal LED light mode, adjust or turn off the LED light brightness through brightness adjustment commands.

[0025] Through the above technical solution, in the light control mode, the LED lamp turns on or off the light module according to the ambient light illumination, so that the LED lamp turns off during the day and turns on at night, thereby saving energy consumption;

[0026] In the sensing mode, when the ambient light is lower than the LUX setting value, if the LED light detects human movement, the light module will be turned on for auxiliary lighting. After the lighting time set by TIME, the light module will be turned off to achieve the effect of saving energy.

[0027] In normal LED light mode, you can use the brightness adjustment command to adjust the LED light brightness or turn off the LED brightness.

[0028] Furthermore, the model of the sensing module is an infrared sensing module, and the model of the sensing module is OLK-IoTpir003 infrared sensing module. The infrared sensing module is composed of a pyroelectric sensing head PIR, a resistor R2, and a capacitor C3.

[0029] Through the above technical solution, when a human body moves, the pyroelectric sensor head PIR detects the heat change when the human body moves, converts the heat change into a sensing signal and outputs it to the control module. The voltage of the sensing signal is generally a few millivolts. When working in the sensing mode, the infrared sensing module starts working. It can also be a radar sensing module.

[0030] Furthermore, the control module is composed of an operational amplifier OP2, a light intensity detection circuit and a microcontroller MCU, and the light intensity detection circuit is composed of a photosensitive diode CDS and a resistor R4.

[0031] Through the above technical solution, when the ambient light illumination changes, the voltage detected by the MCU from the PA0 port changes. PA0 is connected to the internal comparator of the MCU. The MCU compares the reference voltage set by the light illumination adjustment value LUX with the voltage detected by the PA0 port. When the voltage of the PA0 port is less than the reference voltage set by LUX, it means that the ambient light illumination is strong and there is no need to turn on the light-emitting module for auxiliary lighting. A dimming signal is sent to the light-emitting module to turn off the light-emitting module.

[0032] Furthermore, the client is a mobile phone APP or a controller, and the wireless module is a Bluetooth or WIFI or 2.4G module or a 433MHz wireless module.

[0033] Through the above technical solution, the existing smart phone APP can be fully utilized to accurately adjust the data parameters in the sensing module. At the same time, the specific parameter values ​​displayed on the mobile phone APP can be used to facilitate customer monitoring and modification, which is more conducive to the adjustment of the sensing parameters of the LED lamp in different modes;

[0034] The wireless module uses Tuya's TYBT4L Bluetooth module, and you can also use WIFI, Lora, 433MHz or other 2.4G wireless modules.

[0035] In summary, the present invention has the following beneficial effects:

[0036] The wireless controlled LED light sensing circuit installs a wireless module in the LED light, adjusts the sensing parameters through the mobile phone APP or controller, and sends the sensing parameters to the LED light through the wireless module. After receiving the sensing data, the LED light applies it to the adjustment of the corresponding sensing parameters. Compared with the adjustable potentiometer method, the mobile phone APP or controller method can accurately adjust the sensing parameters. Because the adjustable potentiometer is not used, the deviation of the sensing parameters between the LED lights is small, and it is not easy to trigger by mistake. It can also achieve WYSIWYG. The sensing parameters corresponding to the set values ​​can be known without testing the LED lights. After the user installs the LED light, it is also relatively easy to modify it again. It only needs to operate on the mobile phone APP or controller. At the same time, the infrared sensing LED light can also be set as a light-controlled light, a sensor light or a normal light through the APP or controller, so as to achieve the result of one light for multiple uses. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a schematic diagram of the structure of the present invention;

[0038] Figure 2 This is the overall structure circuit diagram of the LED induction lamp of the present invention;

[0039] Figure 3 This is a circuit diagram of a control module of the present invention;

[0040] Figure 4 This is a circuit diagram of the radar module of the present invention. DETAILED DESCRIPTION

[0041] Example:

[0042] The following is combined with Figure 1-4 The present invention is described in further detail.

[0043] A wireless controlled LED light sensing circuit, such as Figure 1-4 As shown, it includes a rectifier bridge, a low-voltage DC power supply module, a control module, a light-emitting module, a sensing module, a wireless module and a client;

[0044] The rectifier bridge supplies power to the light-emitting module after rectification;

[0045] The low-voltage DC power supply module supplies power to the wireless module and the control module respectively with the power rectified by the rectifier bridge;

[0046] The control module receives and processes the sensing parameters from the wireless module and the sensing signal from the sensing module, and then outputs a dimming signal to the light-emitting module after calculation by an algorithm preset in the control module.

[0047] Furthermore, the lighting module receives a dimming signal from the control module, and the dimming signal controls the LED lamp to emit light or not.

[0048] When the dimming signal is high, the LED light string emits light, and when the dimming signal is low, the LED light string does not emit light.

[0049] Furthermore, the light emitting module is composed of an LED light string, a MOS tube Q1, an operational amplifier OP1 and a current regulating resistor Rcs.

[0050] Furthermore, the low-voltage DC power supply module steps down the line voltage through the resistor R1, the filter capacitor C1 and the voltage regulator diode ZD1 and outputs it to the low-voltage difference linear regulator LDO, and then the output of the low-voltage difference linear regulator LDO is filtered by the filter capacitor C2 and output to the control module, the wireless module and the infrared sensing module for power supply.

[0051] The low-dropout linear regulator LDO outputs 3.3V, which is filtered by the filter capacitor C2 and then output to power the control module, wireless module and infrared sensor module; at the same time, a switching power supply or other linear regulated power supply can also be used for power supply.

[0052] Furthermore, the model of the low voltage dropout linear regulator is HT7533.

[0053] Furthermore, the wireless module demodulates the sensing parameters and outputs them to the control module. The sensing parameters are composed of a sensing sensitivity adjustment value SENS, a light intensity adjustment value LUX, a delay time TIME, a control instruction CMD and a brightness adjustment instruction.

[0054] Receive wireless data sent by mobile phone APP or other controllers, demodulate the sensing parameters and output them to the control module. The sensing parameters are composed of the sensing sensitivity adjustment value SENS, the illuminance adjustment value LUX, the delay time TIME, the control command CMD and the brightness adjustment command. The control command CMD controls the LED light to work in three modes, which are divided into light control mode, sensing mode and ordinary LED light mode.

[0055] Further, the control instruction CMD controls the LED lamp to operate in a light control mode, a sensing mode or a normal LED lamp mode;

[0056] Light control mode, the LED light turns on or off the light module according to the ambient light illumination;

[0057] Induction mode: When the ambient light is lower than the LUX setting value and human movement is detected, the LED light turns on the light module for auxiliary lighting, and turns off the light module after the lighting time set by TIME.

[0058] Normal LED light mode, adjust or turn off the LED light brightness through brightness adjustment commands.

[0059] In the light control mode, the LED lamp turns on or off the light module according to the ambient light intensity, so that the LED lamp turns off during the day and turns on at night, thereby saving energy.

[0060] In the sensing mode, when the ambient light is lower than the LUX setting value, if the LED light detects human movement, the light module will be turned on for auxiliary lighting. After the lighting time set by TIME, the light module will be turned off to achieve the effect of saving energy.

[0061] In normal LED light mode, you can use the brightness adjustment command to adjust the LED light brightness or turn off the LED brightness.

[0062] Furthermore, the model of the sensing module is an infrared sensing module, and the model of the sensing module is OLK-IoTpir003 infrared sensing module. The infrared sensing module is composed of a pyroelectric sensing head PIR, a resistor R2, and a capacitor C3.

[0063] When a person moves, the pyroelectric sensor head PIR detects the heat change when the person moves, converts the heat change into a sensing signal and outputs it to the control module. The voltage of the sensing signal is generally a few millivolts. When working in the sensing mode, the infrared sensing module starts working. It can also be a radar sensing module. In this case, just Figure 1 The sensor module is replaced by Figure 3 The circuit shown in the figure is sufficient. Except for the difference in the replaced parts, the other implementation methods of infrared sensing and radar sensing are the same.

[0064] Furthermore, the control module is composed of an operational amplifier OP2, a light intensity detection circuit and a microcontroller MCU, and the light intensity detection circuit is composed of a photosensitive diode CDS and a resistor R4.

[0065] When the ambient light changes, the voltage detected by the MCU from the PA0 port changes. PA0 is connected to the internal comparator of the MCU. The MCU compares the reference voltage set by the light adjustment value LUX with the voltage detected by the PA0 port. When the voltage of the PA0 port is less than the reference voltage set by LUX, it means that the ambient light is strong and there is no need to turn on the light module for auxiliary lighting. A dimming signal is sent to the light module to turn off the light module.

[0066] When the voltage of the PA0 port is greater than the reference voltage set by LUX, it means that the ambient light is weak. When human movement is detected in the light control mode and the sensing mode, the light module needs to be turned on for auxiliary lighting. A dimming signal is sent to the light module to turn on the light module.

[0067] In normal LED light mode, the light intensity detection circuit does not work.

[0068] In the sensing mode, the positive terminal of the operational amplifier OP2 is connected to the sensing signal output by the infrared sensing module, which is amplified by the amplifier circuit composed of the operational amplifier OP2, R5, R6, C4 and C5 and then output to the PC1 port of the MCU. PC1 is connected to the analog-to-digital converter ADC (Analog-to-Digital Converter) inside the MCU. The ADC samples the amplified sensing signal to obtain the corresponding digital signal. The MCU samples the digital signal once every fixed time T, and after sampling N times, the N sampling values ​​are averaged to obtain the AVER value. The purpose of sampling N times at a fixed time T is to filter the sensing signal to prevent the LED light from being mistakenly sensed when puppies, kittens and other animals move.

[0069] MCU compares the sensing sensitivity adjustment value SENS with AVER. When the AVER value is greater than the value set by SENS, it means that there is no human movement and there is no need to turn on the light-emitting module for auxiliary lighting. When the AVER value is less than the value set by SENS, it means that there is human movement. When the ambient illumination is relatively low, a dimming signal is sent to the light-emitting module to turn on the light-emitting module for auxiliary lighting. The time to turn on the light-emitting module is determined by the delay time TIME. When the time to turn on the light-emitting module is equal to the time set by TIME, a dimming signal is sent to the light-emitting module to turn off the light-emitting module.

[0070] In normal LED light mode, the MCU converts the brightness adjustment command data into a PWM signal duty cycle and outputs it to the light-emitting module to control the light-emitting brightness of the light-emitting module. In normal LED light mode, the light control mode and the induction mode do not work.

[0071] The sensing parameters in the sensing module are adjusted through the client.

[0072] Furthermore, the client is a mobile phone APP or a controller, and the wireless module is a Bluetooth or WIFI or 2.4G module or a 433MHz wireless module.

[0073] It can make full use of the existing smartphone APP to accurately adjust the data parameters in the sensing module. At the same time, it can also display specific parameter values ​​on the mobile phone APP, which is convenient for customers to monitor and modify, and is more conducive to the adjustment of sensing parameters of LED lights in different modes;

[0074] The wireless module uses Tuya's TYBT4L Bluetooth module, and you can also use WIFI, Lora, 433MHz or other 2.4G wireless modules.

[0075] Adjust the sensing parameters through the mobile phone APP or controller, and send the sensing parameters to the LED light through the wireless module. After receiving the sensing data, the LED light applies it to the adjustment of the corresponding sensing parameters. Compared with the adjustable potentiometer method, the mobile phone APP or controller method can accurately adjust the sensing parameters. Because the adjustable potentiometer is not used, the deviation of the sensing parameters between the LED lights is small, and it is not easy to trigger by mistake. It can also achieve WYSIWYG. Without testing the LED light, you can know the sensing parameters corresponding to the set value. After the user installs the LED light, it is also relatively easy to modify it again. Just operate on the mobile phone APP or controller. At the same time, the infrared sensing LED light can also be set as a light-controlled light, a sensor light or a normal light through the mobile phone APP or controller, so as to achieve the result of multiple uses of one light.

[0076] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. A wireless controlled LED light sensing circuit, characterized in that: It includes a rectifier bridge, a low-voltage DC power supply module, a control module, a light-emitting module, a sensing module, a wireless module and a client; The rectifier bridge supplies power to the light-emitting module after rectification; The low-voltage DC power supply module supplies power to the wireless module and the control module respectively using the power rectified by the rectifier bridge; The control module receives and processes the sensing parameters from the wireless module and the sensing signal from the sensing module, and then outputs a dimming signal to the light-emitting module after calculation by an algorithm preset in the control module; The control module is composed of an operational amplifier OP2, a light intensity detection circuit and a microcontroller MCU, and the light intensity detection circuit is composed of a photodiode CDS and a resistor R4; The positive terminal of the operational amplifier OP2 is connected to the sensing signal output by the infrared sensing module, which is amplified by the amplifier circuit composed of the operational amplifier OP2, R5, R6, C4 and C5 and then output to the PC1 port of the MCU. PC1 is connected to the analog-to-digital converter ADC inside the MCU. The ADC samples the amplified sensing signal to obtain the corresponding digital signal. The MCU samples the digital signal once every fixed time T. After sampling N times, the N sampling values ​​are averaged to obtain the AVER value. The sensing parameters in the sensing module are adjusted by the client, the client is a mobile phone APP or a controller, and the wireless module is a Bluetooth or WIFI or 2.4G module or a 433MHz wireless module; The wireless module demodulates the sensing parameters and outputs them to the control module. The sensing parameters consist of a sensing sensitivity adjustment value SENS, a light intensity adjustment value LUX, a delay time TIME, a control instruction CMD and a brightness adjustment instruction. The control instruction CMD controls the working mode of the LED lamp through the light control mode, the sensing mode and the ordinary LED lamp mode; Light control mode, the LED light turns on or off the light module according to the ambient light illumination; In the sensing mode, when the ambient light illumination is lower than the LUX setting value or human movement is detected, the LED lamp turns on the light module for auxiliary lighting, and turns off the light module after the lighting time set by TIME.

2. The wireless controlled LED lamp sensing circuit according to claim 1, characterized in that: The lighting module receives a dimming signal from the control module, and the dimming signal controls the LED lamp to emit light or not.

3. The wireless controlled LED lamp sensing circuit according to claim 2, characterized in that: The light emitting module is composed of an LED light string, a MOS tube Q1, an operational amplifier OP1 and a current regulating resistor Rcs.

4. The wireless controlled LED lamp sensing circuit according to claim 1, characterized in that: The low-voltage DC power supply module steps down the line voltage through resistor R1, filter capacitor C1 and voltage regulator diode ZD1 and outputs it to the low-voltage difference linear regulator LDO, and then the output of the low-voltage difference linear regulator LDO is filtered by filter capacitor C2 and output to the control module, wireless module and infrared sensing module for power supply.

5. The wireless controlled LED lamp sensing circuit according to claim 4, characterized in that: The model of the low voltage dropout linear regulator is HT7533.

6. The wireless controlled LED lamp sensing circuit according to claim 1, characterized in that: In the ordinary LED light mode, the brightness of the LED light is adjusted or turned off through a brightness adjustment instruction.

7. The wireless controlled LED lamp sensing circuit according to claim 1, characterized in that: The model of the sensing module is an infrared sensing module, which is composed of a pyroelectric sensing head PIR, a resistor R2 and a capacitor C3.

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