Human body induction LED controller with adjustable delay time

Abstract

The utility model discloses a human body induction LED controller with adjustable delay time. The human body induction LED controller comprises a power supply module, a master control module, a delay time selection module and a radar induction module. The power module is connected with an external power supply; the main control module is connected with the power supply module and is used for connecting an LED lamp; the delay time selection module is connected with the main control module; the radar sensing module is connected with the power module and the master control module and used for detecting whether someone gets close to the sensing area or not. The main control module can control the LED lamp to be turned on when the radar sensing module detects that a person enters the sensing area, or control the LED lamp to be turned off after delaying a set time when the radar sensing module detects that the person leaves the sensing area; the delay time selection module is used for selecting delay time; by means of the structure, the LED lamp can be controlled in the mode that whether a person approaches or not can be sensed, the delay time of radar sensing can be adjusted, the use flexibility of the LED controller is expanded, and use requirements are met.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of LED lamp, especially in a kind of adjustable time delay human response LED controller. BACKGROUND

[0002] With LED lamps and lanterns into thousands of households, and the matching controller is also various, especially with the induction function LED lamps and lanterns, such as cabinet lamp, will configure human sensor to realize person to light, person walk light off, widely used in cabinet with glass cabinet door;But present human response LED controller when using, only control LED lamp opening or closing, and cannot adjust the time delay after human sensor senses user to leave, and then make user unable to adjust according to actual demand, cannot adapt to the use demand of complex scene;Therefore, there is an urgent need for a kind of adjustable time delay human response LED controller to solve the above problems. SUMMARY

[0003] The utility model aims at at least one of the technical problems existing in prior art is solved.For this purpose, the utility model provides a kind of adjustable time delay human response LED controller.

[0004] The technical scheme for solving the technical problems of one embodiment of the utility model is as follows: a kind of adjustable time delay human response LED controller, including power module, main control module, delay time selection module and radar induction module;

[0005] Power module is connected to external power supply;

[0006] Main control module is connected with power module, for connecting LED lamps and lanterns;

[0007] Delay time selection module is connected with main control module;

[0008] Radar induction module is respectively connected with power module and main control module, for detecting whether anyone is close to induction area;

[0009] Main control module can control LED lamps and lanterns to open when radar induction module detects that someone enters induction area, or after delay setting time, control LED lamps and lanterns to close when radar induction module detects that someone leaves induction area;Delay time selection module is used to select delay time.

[0010] As one of the preferred embodiments of the utility model, the power module includes DC-DC chip U2, inductor L1, diode D4-D5, resistance R9-R14 and capacitor C5-C9, the VIN foot of DC-DC chip U2 is connected with the cathode of diode D4, one end of resistance R13, one end of capacitor C5 and one end of capacitor C6 respectively, the anode of diode D4 is connected with one end of external power supply through resistance R14, the other end of capacitor C5 is connected with the other end of capacitor C6, the anode of diode D5, the other end of external power supply and GND end respectively, the other end of resistance R13 is connected with the EN foot of DC-DC chip U2 and is connected with GND end through resistance R11, the cathode of diode D5 is connected with the SW foot of DC-DC chip U2, one end of capacitor C10 and one end of inductor L1 respectively, the other end of capacitor C10 is connected with the BST foot of DC-DC chip U2, the other end of inductor L1 is connected with one end of capacitor C7, one end of capacitor C8, one end of capacitor C9, one end of resistance R9, one end of resistance R10, main control module and radar induction module respectively, the other end of resistance R9 is connected with main control module, the other end of resistance R10 is connected with the FB foot of DC-DC chip U2 and one end of resistance R12 respectively, the GND foot of DC-DC chip U2, the other end of resistance R12, the other end of capacitor C7, the other end of capacitor C8 and the other end of capacitor C9 are connected with GND end.

[0011] As one of the preferred embodiments of the utility model, the main control module includes main control chip U1, capacitor C2-C3, resistance R1, resistance R7, resistance R8 and triode Q2, the VDD foot of main control chip U1 is connected with one end of capacitor C2, one end of capacitor C3 and one end of resistance R1 respectively, the other end of resistance R1 is connected with power module, the PA2 foot of main control chip U1 is connected with one end of resistance R8 and the base of triode Q2 through resistance R7 respectively, the collector of triode Q2 is connected with LED lamp, the GND foot of main control chip U1, the other end of capacitor C2, the other end of capacitor C3, the other end of resistance R8 and the emitter of triode Q3 are connected with GND end.

[0012] As one of the preferred embodiments of the utility model, the delay time selection module includes switch S1, one end is connected with main control module, the other end is connected with GND end.

[0013] As a preferred embodiment of this utility model, the radar sensing module includes a radar sensing probe P1, capacitors C1 and C4, resistors R2-R3, and a transistor Q1. The first power supply pin of the radar sensing probe P1 is connected to the power supply module and one end of capacitor C1. The first power supply pin of the radar sensing probe P1 is connected to the other end of capacitor C1, one end of resistor R2, the emitter of transistor Q1, and the GND terminal. The signal pin of the radar sensing probe P1 is connected to one end of capacitor C4 and one end of resistor R3. The other end of capacitor C4 is connected to the GND terminal. The other end of resistor R3 is connected to the other end of resistor R2 and the base of transistor Q1. The collector of transistor Q1 is connected to the main control module.

[0014] As one of the preferred embodiments of this utility model, a human body sensing LED controller with adjustable delay time also includes a delay time indication module connected to the power supply module and the main control module respectively.

[0015] As one of the preferred embodiments of this utility model, the delay time indicator module includes LED D1, LED D2, LED D3 and resistors R4-R6. LED D1 and resistor R4 are connected in series between the power supply module and the main control module, LED D2 and resistor R5 are connected in series between the power supply module and the main control module, and LED D3 and resistor R6 are connected in series between the power supply module and the main control module.

[0016] In one of the preferred embodiments of this utility model, the light emitted by LEDs D1, D2 and D3 is of different colors.

[0017] The beneficial effects of this utility model are as follows: A human body sensing LED controller with adjustable delay time includes a power supply module, a main control module, a delay time selection module, and a radar sensing module; the power supply module is connected to an external power source; the main control module is connected to the power supply module and is used to connect the LED lights; the delay time selection module is connected to the main control module; the radar sensing module is connected to both the power supply module and the main control module and is used to detect whether someone is approaching the sensing area; the main control module can control the LED lights to turn on when the radar sensing module detects someone entering the sensing area, or control the LED lights to turn off after a set delay time when the radar sensing module detects someone leaving the sensing area; the delay time selection module is used to select the delay time; through the above structure, not only can the LED lights be controlled by sensing whether someone is approaching, but the delay time of the radar sensing can also be adjusted, expanding the flexibility of the LED controller and meeting the usage requirements. Attached Figure Description

[0018] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0019] Figure 1 This is a circuit schematic diagram of a human body sensing LED controller with adjustable delay time.

[0020] Figure 2 This is the circuit schematic of the power module;

[0021] Figure 3 The circuit schematic of the main control module;

[0022] Figure 4 Circuit schematic for selecting the delay time module;

[0023] Figure 5 The circuit schematic for the delay time indicator module;

[0024] Figure 6 This is the circuit schematic of the radar sensing module. Detailed Implementation

[0025] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0026] In the description of this utility model, "multiple" means two or more; "greater than," "less than," and "exceeding" are understood to exclude the stated number; "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly specifying the number of indicated technical features or their sequential relationship.

[0027] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, 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.

[0028] In this utility model, unless otherwise explicitly defined, the terms "setting," "installing," and "connecting" should be interpreted broadly. For example, they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to a fixed connection, a detachable connection, or an integral molding; they can refer to a mechanical connection; they can refer to the internal connection of two components or the interaction between two components. Those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0029] Reference Figures 1 to 6 A human body sensing LED controller with adjustable delay time includes a power module 10, a main control module 20, a delay time selection module 30, and a radar sensing module 40.

[0030] Power module 10 is connected to an external power source;

[0031] The main control module 20 is connected to the power supply module 10 and is used to connect LED lights;

[0032] Delay time selection module 30 is connected to main control module 20;

[0033] The radar sensing module 40 is connected to the power supply module 10 and the main control module 20 respectively, and is used to detect whether someone is approaching the sensing area;

[0034] The main control module 20 can control the LED lights to turn on when the radar sensing module 40 detects someone entering the sensing area, or control the LED lights to turn off after a set delay time when the radar sensing module 40 detects someone leaving the sensing area; the delay time selection module 30 is used to select the delay time.

[0035] In this invention, the power supply module 10 is used to convert the voltage of the external power input, providing a suitable operating voltage for the other modules in the system. In some embodiments, the radar sensing module 40 includes a radar sensing probe P1, capacitors C1 and C4, resistors R2-R3, and transistor Q1. The first power supply pin of the radar sensing probe P1 is connected to the power supply module 10 and one end of capacitor C1, and the first power supply pin of the radar sensing probe P1 is connected to the other end of capacitor C1, one end of resistor R2, the emitter of transistor Q1, and the GND terminal. The signal pins of P1 are connected to one end of capacitor C4 and one end of resistor R3, respectively. The other end of capacitor C4 is connected to the GND terminal. The other end of resistor R3 is connected to the other end of resistor R2 and the base of transistor Q1, respectively. The collector of transistor Q1 is connected to the main control module 20. The radar sensor P1 consists of a radar chip circuit and an antenna. Capacitors C1 and C4, resistors R2-R3, and transistor Q1 constitute the radar signal receiving circuit. The radar signal receiving circuit mainly receives the level signal from the radar sensor, filters and inverts it, and then sends it to the main control chip U1. After receiving the radar level signal, the control logic outputs a PWM modulation signal to adjust the load output of the LED driver power supply, thereby realizing the on / off function of the lights. To prevent noise interference, a software filtering function is also required to avoid malfunctions. In the radar sensor P1, the voltage regulator circuit mainly provides a stable and clean power supply for the radar chip. Since the radar sensor P1 is connected to the main control board by a long wire, there will be some interference. Therefore, a voltage regulator circuit is needed to filter the transmitted interference to avoid affecting the normal operation of the radar chip. The radar chip circuit refers to the radar chip and its peripheral circuits, including the crystal oscillator and filter circuit. The antenna is connected to the radar chip, and the radar chip transmits and receives radio waves through the antenna. The radar chip sends FMCW frequency-modulated continuous waves to detect human targets in the sensing area. The radar signal is processed according to a precise human body sensing algorithm. When a human body is detected in the space, a high-level signal is output. The high-level signal is transmitted to the main control board through the wire. After receiving the filtered high-level signal, the main control chip U1 executes the light-on command. When the human body leaves the sensing area, the main control chip U1 will start a timer and execute the light-off command after the user-set light-off time.

[0036] In other embodiments, the delay time selection module 30 includes a switch S1 with one end connected to the main control module 20 and the other end connected to the GND terminal. The main function of the switch S1 is to provide the user with a selection function. By pressing the switch S1 briefly, the user can select the delay time for turning off the light after the person leaves the sensing area. For example, it can be one of three levels: 30 seconds, 60 seconds, and 180 seconds.

[0037] Reference Figure 1 and Figure 2In some embodiments, the power module 10 includes a DC-DC chip U2, an inductor L1, diodes D4-D5, resistors R9-R14, and capacitors C5-C9. The VIN pin of the DC-DC chip U2 is connected to the cathode of diode D4, one end of resistor R13, one end of capacitor C5, and one end of capacitor C6, respectively. The anode of diode D4 is connected to one end of an external power supply via resistor R14. The other end of capacitor C5 is connected to the other end of capacitor C6, the anode of diode D5, the other end of the external power supply, and the GND terminal, respectively. The other end of resistor R13 is connected to the EN pin of the DC-DC chip U2 and to the GND terminal via resistor R11. The cathode of diode D5 is connected to the SW pin of the DC-DC chip U2, one end of capacitor C10, and one end of inductor L1, respectively. The other end of capacitor C10 is connected to the BST pin of the DC-DC chip U2. The inductor L1 is connected to one end of capacitor C7, one end of capacitor C8, one end of capacitor C9, one end of resistor R9, one end of resistor R10, the main control module 20, and the radar sensing module 40. The other end of resistor R9 is connected to the main control module 20. The other end of resistor R10 is connected to the FB pin of DC-DC chip U2 and one end of resistor R12. The GND pin of DC-DC chip U2, the other end of resistor R12, the other end of capacitor C7, the other end of capacitor C8, and the other end of capacitor C9 are connected to the GND pin. Specifically, the power module 10 converts the high voltage provided by the external power supply into a low voltage usable by the system. It prevents reverse connection of the power supply through the reverse connection protection chip and filters the low voltage power supply to provide power to all components in the system. Since the operating current of this utility model is large, a DC-DC circuit is required to power the system.

[0038] Reference Figure 1 and Figure 3 In some embodiments, the main control module 20 includes a main control chip U1, capacitors C2-C3, resistors R1, R7, R8, and transistor Q2. The VDD pin of the main control chip U1 is connected to one end of capacitor C2, one end of capacitor C3, and one end of resistor R1. The other end of resistor R1 is connected to the power supply module 10. The PA2 pin of the main control chip U1 is connected to one end of resistor R8 and the base of transistor Q2 via resistor R7. The collector of transistor Q2 is connected to the LED lamp. The GND pin of the main control chip U1, the other end of capacitor C2, the other end of capacitor C3, the other end of resistor R8, and the emitter of transistor Q3 are connected to the GND terminal. The power drive signal is a PWM modulation signal emitted by the main control chip U1. This signal is amplified and inverted and then transmitted to the LED driver power supply through the connecting line, thereby adjusting the output load of the power supply to control the LED lamp's switching on and off and brightness adjustment. The peripheral circuits of the main control chip U1 include power supply filtering and reset circuits, etc.

[0039] Reference Figure 1 and Figure 3 In some embodiments, a human body sensing LED controller with adjustable delay time further includes a delay time indicator module 50 connected to the power module 10 and the main control module 20 respectively. Preferably, the delay time indicator module 50 includes LEDs D1, D2, and D3, and resistors R4-R6. LEDs D1 and R4 are connected in series between the power module 10 and the main control module 20, LEDs D2 and R5 are connected in series between the power module 10 and the main control module 20, and LEDs D3 and R6 are connected in series between the power module 10 and the main control module 20. The user is reminded of the current delay level by setting corresponding indicator lights. In some embodiments, the LEDs D1, D2, and D3 emit different colors of light, and the delay level is indicated by lighting different LEDs. Alternatively, the colors of the light emitted by LEDs D1, D2, and D3 can be set to be the same, and the user is reminded of successful switching by controlling the flashing of the lights.

[0040] The advantages of this invention are: the structure described above not only allows for the control of LED lights by sensing whether someone is approaching, but also allows for the adjustment of the radar sensing delay time, thus expanding the flexibility of the LED controller and meeting usage requirements.

[0041] Of course, this utility model is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of this utility model. All such equivalent modifications and substitutions are included within the scope defined by the claims of this application.

Claims

1. A human body sensing LED controller with adjustable delay time, characterized in that: It includes a power module (10), a main control module (20), a delay time selection module (30), and a radar sensing module (40). The power module (10) is connected to an external power source; The main control module (20) is connected to the power supply module (10) and is used to connect LED lamps; The delay time selection module (30) is connected to the main control module (20), and the delay time selection module (30) includes a switch S1 with one end connected to the main control module (20) and the other end connected to the GND terminal; The radar sensing module (40) is connected to the power supply module (10) and the main control module (20) respectively, and is used to detect whether someone is approaching the sensing area; The main control module (20) can control the LED lights to turn on when the radar sensing module (40) detects someone entering the sensing area, or control the LED lights to turn off after a set delay time when the radar sensing module (40) detects someone leaving the sensing area; the delay time selection module (30) is used to select the delay time.

2. The human body sensing LED controller with adjustable delay time according to claim 1, characterized in that: The power module (10) includes a DC-DC chip U2, an inductor L1, diodes D4-D5, resistors R9-R14, and capacitors C5-C9. The VIN pin of the DC-DC chip U2 is connected to the cathode of diode D4, one end of resistor R13, one end of capacitor C5, and one end of capacitor C6, respectively. The anode of diode D4 is connected to one end of an external power supply via resistor R14. The other end of capacitor C5 is connected to the other end of capacitor C6, the anode of diode D5, the other end of the external power supply, and the GND terminal, respectively. The other end of resistor R13 is connected to the EN pin of the DC-DC chip U2 and to the GND terminal via resistor R11. The cathode of diode D5 is connected to the SW pin of the DC-DC chip U2, One end of capacitor C10 is connected to one end of inductor L1, and the other end of capacitor C10 is connected to the BST pin of DC-DC chip U2. The other end of inductor L1 is connected to one end of capacitor C7, one end of capacitor C8, one end of capacitor C9, one end of resistor R9, one end of resistor R10, the main control module (20), and the radar sensing module (40). The other end of resistor R9 is connected to the main control module (20). The other end of resistor R10 is connected to the FB pin of DC-DC chip U2 and one end of resistor R12. The GND pin of DC-DC chip U2, the other end of resistor R12, the other end of capacitor C7, the other end of capacitor C8, and the other end of capacitor C9 are connected to the GND pin.

3. The human body sensing LED controller with adjustable delay time according to claim 1, characterized in that: The main control module (20) includes a main control chip U1, capacitors C2-C3, resistors R1, R7, R8 and transistor Q2. The VDD pin of the main control chip U1 is connected to one end of capacitor C2, one end of capacitor C3 and one end of resistor R1 respectively. The other end of resistor R1 is connected to the power supply module (10). The PA2 pin of the main control chip U1 is connected to one end of resistor R8 and the base of transistor Q2 through resistor R7 respectively. The collector of transistor Q2 is connected to the LED lamp. The GND pin of the main control chip U1, the other end of capacitor C2, the other end of capacitor C3, the other end of resistor R8 and the emitter of transistor Q3 are connected to the GND terminal.

4. The human body sensing LED controller with adjustable delay time according to claim 1, characterized in that: The radar sensing module (40) includes a radar sensing probe P1, capacitors C1 and C4, resistors R2-R3 and transistor Q1. The first power supply pin of the radar sensing probe P1 is connected to the power module (10) and one end of capacitor C1. The first power supply pin of the radar sensing probe P1 is connected to the other end of capacitor C1, one end of resistor R2, the emitter of transistor Q1 and the GND terminal. The signal pin of the radar sensing probe P1 is connected to one end of capacitor C4 and one end of resistor R3. The other end of capacitor C4 is connected to the GND terminal. The other end of resistor R3 is connected to the other end of resistor R2 and the base of transistor Q1. The collector of transistor Q1 is connected to the main control module (20).

5. A human body sensing LED controller with adjustable delay time according to claim 1, characterized in that: It also includes a delay time indication module (50) that is connected to the power module (10) and the main control module (20) respectively.

6. A human body sensing LED controller with adjustable delay time according to claim 5, characterized in that: The delay time indicator module (50) includes LEDs D1, D2, and D3, and resistors R4-R6. LEDs D1 and R4 are connected in series between the power supply module (10) and the main control module (20). LEDs D2 and R5 are connected in series between the power supply module (10) and the main control module (20). LEDs D3 and R6 are connected in series between the power supply module (10) and the main control module (20).

7. A human body sensing LED controller with adjustable delay time according to claim 6, characterized in that: The light emitted by LEDs D1, D2, and D3 is of different colors.

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