CN211930914U

CN211930914U - Light-adjustable double-control switch for human body hand scanning

Info

Publication number: CN211930914U
Application number: CN202020882396.8U
Authority: CN
Inventors: 黄超鹄
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-05-22
Filing date: 2020-05-22
Publication date: 2020-11-13
Anticipated expiration: 2030-05-22

Abstract

The utility model discloses a double control switch is swept to human hand that can adjust luminance. The LED lighting circuit comprises a voltage stabilizing circuit, a single-chip microcomputer MCU and an LED lighting circuit which are sequentially and electrically connected, wherein a hand-sweeping induction switch circuit and a human body induction switch circuit are arranged between the voltage stabilizing circuit and the single-chip microcomputer MCU, the hand-sweeping induction switch circuit comprises infrared geminate transistors D1 and D2, the infrared geminate transistors D1 and D2 are electrically connected with the single-chip microcomputer MCU, the LED lighting circuit comprises an LED lamp and an NMOS transistor Q2 which are connected in series, and a PMOS transistor Q1 is electrically connected with the single-chip; the single chip microcomputer MCU is provided with a dimming module, the dimming module receives feedback signals of the infrared pair transistors D1 and D2, controls and adjusts output duty ratio, and adjusts the opening degree of the NMOS transistor Q1; the human body induction switch circuit comprises a three-pin human body induction probe PIR and a photosensitive diode CDS which are respectively in communication and electric connection with the MCU of the singlechip. On the basis of the double inductive switches, the hand-sweeping light-adjusting function is realized.

Description

Light-adjustable double-control switch for human body hand scanning

Technical Field

The utility model relates to an inductive switch field, in particular to double control switch is swept to human hand that can adjust luminance.

Background

At present, a hand scanning induction switch and a human body induction switch are partially applied, but in actual life, the application of a single-mode induction control switch has limitation, is not intelligent enough, and cannot accurately find the hand scanning induction range if light is insufficient at night; the hand scanning operation is required for both the turning-on and turning-off of the hand scanning induction, and two operations are required under the condition that only short-time illumination is needed at night, so that the operation is not convenient enough; the human body induction switch is frequently switched when facing the situation of frequently approaching and departing.

At present, the hand-sweeping induction switch does not have a dimming function, cannot realize brightness adjustment, cannot form energy conservation and emission reduction, and can meet the requirements of people on different light brightness.

The utility model aims to solve the technical problem that, on the basis of two inductive switches, realize the hand and sweep the light modulation function.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a can realize adjustting of lighteness and possess simultaneously that the hand sweeps response and human response can adjust luminance human hand sweep double control switch.

In order to realize the purpose, the utility model adopts the following technical proposal that the light-adjustable human body hand-sweeping double-control switch comprises a voltage stabilizing circuit, a single-chip microcomputer MCU and an LED lighting circuit which are sequentially and electrically connected, a hand-sweeping induction switch circuit and a human body induction switch circuit are arranged between the voltage stabilizing circuit and the single-chip microcomputer MCU,

the hand-sweeping induction switch circuit comprises infrared pair transistors D1 and D2, the infrared pair transistors D1 and D2 are electrically connected with the single-chip microcomputer MCU, the LED lighting circuit comprises an LED lamp and an NMOS transistor Q2 which are connected in series, and the PMOS transistor Q1 is electrically connected with the single-chip microcomputer MCU;

the single chip microcomputer MCU is provided with a dimming module, the dimming module receives feedback signals of the infrared pair transistors D1 and D2, controls and adjusts output duty ratio, and adjusts the opening degree of the NMOS transistor Q2;

the human body induction switch circuit comprises a three-pin human body induction probe PIR and a photosensitive diode CDS which are respectively in communication and electric connection with the MCU of the singlechip.

The light-adjustable double-control switch for the human body hand-sweeping is provided with the hand-sweeping inductive switch circuit and the human body inductive switch circuit, and can realize the control of two induction modes; the dimming module receives data signals of the infrared pair transistors D1 and D2, the MCU is controlled to output duty ratio, the NMOS transistor Q2 is subjected to opening degree adjustment, and brightness adjustment of the LED lighting circuit is achieved.

In some embodiments, the second pin and the fifth pin of the MCU are electrically connected to the infrared pair transistors D1 and D2, respectively, and the fourth pin of the MCU is electrically connected to the NMOS transistor Q2.

In some embodiments, a PMOS transistor Q1 is arranged between the second pin of the MCU and the infrared pair transistor D1.

In some embodiments, the data pin S of the three-pin PIR human body sensing probe is in communication connection with the third pin of the MCU, and the sixth pin of the MCU is electrically connected to the photodiode CDS.

In some embodiments, the voltage stabilizing circuit comprises a voltage stabilizing LDO, and the output end of the voltage stabilizing circuit is electrically connected with the first pin of the MCU.

In some embodiments, the seventh pin of the MCU is electrically connected to the switch SW1, and the switch SW1 is grounded.

In some embodiments, the dimming module is provided with an output duty cycle memory unit. And setting an output duty ratio memory unit, and memorizing and storing the output duty ratio of the last dimming, so that the next dimming is automatically the memorized brightness.

The utility model has the advantages that: the utility model discloses double control switch is swept to human hand that can adjust luminance when realizing that the hand sweeps response and human induction control switch, sweeps through the module realization hand of adjusting luminance, can realize 5% -100% adjustting of the lighteness, and energy saving and emission reduction more can satisfy people to different light and shade requirements, has more the hommization.

Drawings

FIG. 1 is a schematic diagram of the circuit principle of the light-adjustable double-control switch for human body hand scanning according to the present invention;

fig. 2 is a schematic circuit diagram of embodiment 2 of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example 1

As shown in fig. 1, the dimmable human body hand-sweeping dual-control switch comprises a voltage stabilizing circuit, a single-chip Microcomputer (MCU) and an LED lighting circuit which are sequentially and electrically connected, wherein a hand-sweeping induction switch circuit and a human body induction switch circuit are arranged between the voltage stabilizing circuit and the single-chip Microcomputer (MCU), the hand-sweeping induction switch circuit comprises infrared pair transistors D1 and D2, the infrared pair transistors D1 and D2 are electrically connected with the single-chip Microcomputer (MCU), the LED lighting circuit comprises an LED lamp and an NMOS transistor Q2 which are connected in series, and a PMOS transistor Q1 is electrically connected with;

the voltage stabilizing circuit adopts a voltage stabilizing LDO6203 to perform voltage stabilizing control, and the output end of the voltage stabilizing circuit is electrically connected with a first pin of the MCU of the singlechip.

The second pin and the fifth pin of the single chip microcomputer MCU are respectively and electrically connected with the infrared pair transistors D1 and D2, and the fourth pin of the single chip microcomputer MCU is electrically connected with the NMOS transistor Q2.

A PMOS tube Q1 is arranged between the second pin of the MCU and the infrared pair tube D1. The infrared pair transistors D1 and D2 are controlled to transmit and receive through a PMOS transistor Q1.

The data pin S of the three-pin PIR human body induction probe is in communication connection with the third pin of the MCU, and the sixth pin of the MCU is electrically connected with the CDS.

The VDD pin of the three-pin PIR human body induction probe is connected with the seventh pin of the MCU.

The hand sweeping mode is as follows: adopt the work between singlechip program control far infrared transmitting tube D1 and the far infrared receiver tube D2, utilize the far infrared transmission, receive the principle characteristic, when the hand or shelter from the object in the inductor top, the light of far infrared transmitting tube transmission D1 is refracted back, is received by far infrared receiver tube D2, at this moment singlechip MCU detects the signal that the receiver tube reflected back, judge effectively, output high level drive NMOS pipe Q2 switches on work, light the LED light.

After the LED is lightened, the 2S is blocked above the infrared geminate transistors of the hand or the object and is not moved away, the LED enters a dimming mode, in the dimming or lightening process, the dimming module of the single chip microcomputer MCU adjusts the output duty ratio, the opening degree of the NMOS transistor Q2 is adjusted, the brightness of the LED is adjusted, and the brightness is obtained when the hand or the object is moved away at proper brightness. Meanwhile, the dimming module is provided with an output duty ratio memory unit with a memory function, and the brightness of the next time the lamp is swept by the hand or the lamp is turned on by human body induction is the brightness of the last time the light is swept and adjusted.

This mode is all-weather operation.

Human body induction mode: a three-leg PIR human body induction probe with a photosensitive interface is adopted. When a white body or light is bright, the light sensitive diode CDS is conducted, the sixth pin of the single chip microcomputer MCU is at a high level, and the three-pin PIR human body induction probe does not work. When the light becomes dark at night or reaches the set light intensity, the light sensitive diode CDS is cut off, the sixth pin of the single chip microcomputer MCU is at a low level, and the three-pin PIR human body sensor works. At the moment, if a person approaches to the range of 1-3 meters, the three-foot PIR human body sensing probe detects a human body signal, outputs a high level to drive the NMOS tube Q2 to be conducted and work, lights the LED illuminating lamp, and automatically extinguishes after a certain time delay (for example, 30 seconds according to specific set time). The mode is a human body sensing working mode when the light is dark at night.

Example 2

As shown in fig. 2, the difference from embodiment 1 is that the seventh pin of the MCU is electrically connected to the switch SW1, and the switch SW1 is grounded.

The VDD pin of the three-pin PIR human body induction probe is connected with the power output end of the voltage stabilizing circuit.

Under the circuit configuration, the switch SW1 can be used for realizing integral switching, so that the work can be stopped when the inductive switch is not used for a long time, and the energy-saving effect is achieved.

What has been described above are only some embodiments of the invention. For those skilled in the art, without departing from the inventive concept, several modifications and improvements can be made, which are within the scope of the invention.

Claims

1. The adjustable human body hand-scanning double-control switch comprises a voltage stabilizing circuit, a single-chip microcomputer MCU and an LED lighting circuit which are sequentially and electrically connected, and is characterized in that a hand-scanning induction switch circuit and a human body induction switch circuit are arranged between the voltage stabilizing circuit and the single-chip microcomputer MCU,

the hand-sweeping induction switch circuit comprises infrared geminate transistors D1 and D2 and a PMOS transistor Q1, the infrared geminate transistors D1 and D2 are electrically connected with the single-chip microcomputer MCU, the LED lighting circuit comprises an LED lamp and an NMOS transistor Q2 which are connected in series, and the PMOS transistor Q1 is electrically connected with the single-chip microcomputer MCU;

the single chip microcomputer MCU is provided with a dimming module, the dimming module receives feedback signals of infrared geminate transistors D1 and D2, controls and adjusts output duty ratio, and adjusts the opening degree of an NMOS transistor Q2;

the human body induction switch circuit comprises a three-pin PIR human body induction probe and a photosensitive diode CDS which are respectively in communication and electric connection with the MCU of the singlechip.

2. The dimmable human body hand-scanning dual control switch of claim 1, wherein the second and fifth pins of the MCU are electrically connected to the pair of infrared tubes D1 and D2, respectively, and the fourth pin of the MCU is electrically connected to the NMOS tube Q2.

3. The dimmable human body hand-broom dual control switch of claim 2, wherein a PMOS transistor Q1 is disposed between the second pin of the MCU and the infrared pair transistor D1.

4. The dimmable human body hand-scanning dual control switch of claim 1, wherein the data pin S of the three-pin PIR human body sensing probe is in communication with a third pin of the MCU, and a sixth pin of the MCU is electrically connected to the photodiode CDS.

5. The dimmable human body hand-scan dual control switch of claim 1, wherein the voltage regulator circuit comprises a voltage regulator LDO, and an output terminal of the voltage regulator circuit is electrically connected to the first pin of the MCU.

6. The dimmable human body hand-broom dual control switch of claim 1, wherein a seventh pin of the MCU is electrically connected to a switch SW1, the switch SW1 is grounded.

7. The dimmable human body hand-scanning duel-control switch of claim 1, wherein the dimming module is provided with an output duty cycle memory unit.