WO2018006435A1

WO2018006435A1 - Infrared human face detection device and method for photon beauty apparatus

Info

Publication number: WO2018006435A1
Application number: PCT/CN2016/089975
Authority: WO
Inventors: 苏德群; 文长春
Original assignee: 深圳斯坦普光生物科技有限公司
Priority date: 2016-07-05
Filing date: 2016-07-14
Publication date: 2018-01-11
Also published as: CN106669044A; CN106669044B

Abstract

An infrared human face detection device for a photon beauty apparatus. The infrared human face detection device comprises: an infrared pair sensor (IR1), a level conversion module (1), a voltage comparison unit (2), an MCU module (3), and an LED photon module (4). The infrared pair sensor (IR1) is used for transmitting a face detection signal. The level conversion module (1) is used for shaping a signal, transmitted from an infrared receiver, to a standard level signal. The voltage comparison unit (2) is used for transmitting a triggering signal corresponding to the face detection signal. The MCU module (3) is used for transmitting a PWM pulse signal when receiving the triggering signal and for closing a transmission port thereof when not receiving the triggering signal. The PWM pulse signal drives the LED photon module (4) to generate a photon signal. The invention achieves automatic detection of a human face and automatically controls photon generation on the basis of a wearing status of the photon beauty apparatus.

Description

Human face infrared detecting device and method for photon beauty instrument

Technical field

The invention relates to a photon beauty instrument, in particular to a human body face infrared detecting device and method for a photon beauty instrument.

Background technique

Various photon beauty instruments in the prior art have not found any mobile portable photon beauty instrument product with facial distance detection function, therefore, the photon beauty lamp is still in the normally open state when the head photon beauty instrument is removed. It does not automatically turn off or suspend the device, causing the light emitted by the photon lamp to directly hit the eye and cause damage, lack of protection, and no humanized features.

Summary of the invention

The technical problem to be solved by the present invention is to provide a human face infrared detecting device and method for a photon beauty instrument for realizing automatic detection of a human face and automatically controlling according to the wearing condition of the human body. The state of photon generation.

In order to solve the above technical problems, the present invention adopts the following technical solutions.

A human face infrared detecting device for a photon beauty instrument, comprising: an infrared pair tube sensor disposed on a mask of a photon beauty instrument, wherein the infrared pair tube sensor comprises an infrared emitting tube and an infrared receiving unit both facing the human body face The infrared receiving tube outputs a facial sensing signal when the infrared light emitted by the infrared transmitting tube is reflected by the human body surface to the infrared receiving tube; the level converting module is electrically connected to the output end of the infrared receiving tube. The level conversion module is configured to shape the signal output by the infrared receiving tube into a standard level signal; the voltage comparing unit is electrically connected to the output end of the level converting module, and the electric The voltage comparison unit is configured to sample an output level of the level conversion module, and when the level conversion module outputs a level corresponding to the face sensing signal, the voltage comparison unit outputs a trigger signal; the MCU control module, Electrically connected to an output of the voltage comparison unit, the MCU control module is configured to output a PWM pulse signal when it receives the trigger signal, and turn off its output port when it does not receive the trigger signal; LED photon The module is electrically connected to the MCU control module, and the LED photon module is driven by the PWM pulse signal to generate a photon signal.

Preferably, the anode of the infrared transmitting tube is connected to the power supply end, the cathode thereof is grounded through a first current limiting resistor, the collector of the infrared receiving tube is connected to the power supply end, and the emitter thereof is used as an output end of the infrared pair tube sensor, and For outputting facial sensing signals.

Preferably, the level conversion module includes an NPN tube, and the collector of the NPN tube is connected to the power terminal through a second current limiting resistor, the emitter of the NPN tube is grounded, and the base thereof is used to access the face. Inductive signal, the collector of the NPN tube acts as an output of the level shifting module and is used to output a standard level signal.

Preferably, the voltage comparison unit includes a voltage comparator, a first voltage dividing resistor and a second voltage dividing resistor, wherein the first voltage dividing resistor and the second voltage dividing resistor are connected in series between the power terminal and the ground, and The connection point voltage is transmitted to the non-inverting terminal of the voltage comparator, the inverting terminal of the voltage comparator is connected to the output terminal of the level conversion module, and the output of the voltage comparator is connected to the MCU control module.

Preferably, the inverting terminal of the voltage comparator is further connected to the power supply terminal through a pull-up resistor.

A human face infrared detecting method for a photon beauty instrument, the method is implemented based on a human face infrared detecting device, wherein the human face infrared detecting device comprises an infrared pair tube sensor, a level conversion module, a voltage comparison unit, and an MCU control a module and an LED photo submodule, wherein the infrared pair tube sensor comprises an infrared emitting tube and an infrared receiving tube both facing the human body surface, the method comprising the following steps: Step S1, using the infrared emitting tube to emit infrared light, the infrared Light reflected through the human body to the red When receiving the tube, the infrared receiving tube outputs a facial sensing signal; in step S2, the level converting module shapes the signal output by the infrared receiving tube into a standard level signal; and in step S3, using the voltage comparing unit The output level of the level conversion module is sampled, and when the level conversion module outputs a level corresponding to the face sensing signal, the voltage comparison unit outputs a trigger signal; and in step S4, the MCU control module receives Go to the trigger signal, if yes, go to step S5, if not, turn off its output port; in step S5, the MCU control module outputs a PWM pulse signal according to the trigger signal, and drives the LED by the PWM pulse signal The photonic module generates a photon signal and uses the photon signal generated by the LED photonic module to cosmeticize the human face.

In the human face infrared detecting device and method for photon beauty instrument disclosed in the present invention, when the user wears the mask of the photon beauty instrument, the infrared light emitted by the infrared emitting tube is reflected by the human body surface to the infrared receiving tube, the infrared The receiving tube outputs a facial sensing signal, and the surface sensing signal is shaped into a standard level signal by using the level converting module, and then converted into a trigger signal by the voltage comparing unit and transmitted to the MCU control module, and the MCU control module receives the received signal according to the The signal is judged. If the trigger signal is not received by the MCU control module, the output port is closed. If the MCU control module receives the trigger signal, the PWM pulse signal is output according to the trigger signal, by using the PWM. The pulse signal drives the LED photo sub-module to generate a photon signal, and the photon signal generated by the LED photonic module is used to cosmeticize the human face. Based on the above principle, when the user wears the mask, the photon signal is automatically generated. If the user picks up the mask, the photon signal is automatically turned off, thereby realizing automatic control of the use state of the beauty instrument, thereby protecting the human body. Damaged and more automated.

DRAWINGS

1 is a block diagram showing the composition of a human face infrared detecting device of the present invention.

2 is a circuit schematic diagram of an infrared pair tube sensor, a level conversion module, and a voltage comparison unit.

detailed description

The invention will now be described in greater detail with reference to the drawings and embodiments.

The invention discloses a human face infrared detecting device for a photon beauty instrument, which is shown in FIG. 1 and FIG. 2, which comprises an infrared pair tube sensor IR1 and a level conversion module 1 disposed on a photon beauty instrument mask. Voltage comparison unit 2, MCU control module 3 and LED photo submodule 4, wherein:

The infrared pair tube sensor IR1 includes an infrared emitting tube and an infrared receiving tube both facing the human body surface. When the infrared light emitted by the infrared emitting tube is reflected by the human body surface to the infrared receiving tube, the infrared receiving tube outputs a face. Inductive signal

The level conversion module 1 is electrically connected to an output end of the infrared receiving tube, and the level converting module 1 is configured to shape a signal output by the infrared receiving tube into a standard level signal; the standard level signal refers to a standard High and low levels, such as +5V level and 0V level.

The voltage comparison unit 2 is electrically connected to the output end of the level conversion module 1, and the voltage comparison unit 2 is configured to sample the output level of the level conversion module 1, and when the level conversion module 1 outputs the same When the level corresponding to the facial sensing signal is described, the voltage comparing unit 2 outputs a trigger signal;

The MCU control module 3 is electrically connected to an output end of the voltage comparison unit 2, and the MCU control module 3 is configured to output a PWM pulse signal when it receives the trigger signal, and when it does not receive the trigger signal Turn off its output port;

The LED photo sub-module 4 is electrically connected to the MCU control module 3, and the LED photon module 4 is driven by the PWM pulse signal to generate a photon signal.

In the above-mentioned human face infrared detecting device, when the user wears the mask of the photon beauty instrument, the infrared light emitted by the infrared emitting tube is reflected by the human body surface to the infrared receiving tube, and the infrared receiving tube outputs a facial sensing signal, and uses level shifting. After module 1 shapes the face sensing signal into a standard level signal, The voltage comparison unit 2 converts to a trigger signal and transmits to the MCU control module 3, and the MCU control module 3 determines according to the signal it receives. If the MCU control module 3 does not receive the trigger signal, the output port is closed. If the trigger signal is received by the MCU control module 3, the PWM pulse signal is output according to the trigger signal, and the photon signal is generated by driving the LED photo submodule 4 by the PWM pulse signal, and the photon signal generated by the LED photo submodule 4 is generated. Beauty the face of the human body. Based on the above principle, when the user wears the mask, the photon signal is automatically generated. If the user picks up the mask, the photon signal is automatically turned off, thereby realizing automatic control of the use state of the beauty instrument, thereby protecting the human body. Damaged and more automated.

Regarding the specific circuit structure of each unit, the anode of the infrared transmitting tube is connected to the power supply end, and the cathode thereof is grounded through the first current limiting resistor R1, the collector of the infrared receiving tube is connected to the power end, and the emitter thereof is used as the infrared pair tube. The output of the sensor IR1 is used to output a facial sensing signal. The level conversion module 1 includes an NPN transistor Q1. The collector of the NPN transistor Q1 is connected to the power supply terminal through a second current limiting resistor R5. The emitter of the NPN transistor Q1 is grounded, and the base thereof is used for accessing the terminal. The face sensing signal is described, and the collector of the NPN transistor Q1 serves as an output of the level conversion module 1 and is used to output a standard level signal. Since the output voltage of the collector of the infrared receiving tube is linear, in order to avoid misjudgment or generate a false signal, the embodiment uses the level converting module 1 to level-convert the output signal of the infrared receiving tube to realize level shaping.

Further, the voltage comparison unit 2 includes a voltage comparator U1, a first voltage dividing resistor R3, and a second voltage dividing resistor R4. The first voltage dividing resistor R3 and the second voltage dividing resistor R4 are connected in series with the power terminal. Between the ground, and the junction voltage of the two is transmitted to the non-inverting terminal of the voltage comparator U1, and the inverting terminal of the voltage comparator U1 is connected to the output terminal of the level converting module 1, the voltage comparator U1 The output is connected to the MCU control module 3.

Wherein, when the infrared receiving tube receives the infrared light reflected by the human body face, the power is turned on, and the power terminal VDD The voltage is transmitted to the base of the NPN tube Q1 through the infrared receiving tube to turn on the NPN tube Q1, and the collector of the NPN tube Q1 is pulled low, and the inverting terminal of the voltage comparator U1 is pulled low, the voltage comparator U1 outputs a high potential trigger signal to the MCU control module 3; when the infrared receiving tube does not receive the infrared signal, the NPN tube Q1 is in a closed state, and the collector of the NPN tube Q1 is at a high potential due to the second current limiting resistor R5, voltage comparison The inverting terminal of the U1 also has a high potential. At the same time, the voltage comparator U1 outputs a low potential signal to cause the MCU control module 3 to close its output port, and the LED photo submodule 4 stops emitting light. In practical applications, the MCU control module 3 can be composed of a single chip microcomputer and its peripheral circuits.

As a preferred mode, the inverting terminal of the voltage comparator U1 is also connected to the power supply terminal through the pull-up resistor R2. The pull-up resistor R2 functions to ensure that the trigger signal is at a standard high level when the voltage comparator U1 outputs a high-potential trigger signal, thereby preventing the MCU control module 3 from being misjudged.

Based on the above device, the present invention also discloses a human face infrared detecting method for a photon beauty instrument, the method comprising the following steps:

Step S1, using the infrared emitting tube to emit infrared light, when the infrared light is reflected by the human body surface to the infrared receiving tube, the infrared receiving tube outputs a facial sensing signal;

Step S2, the level conversion module 1 shapes the signal output by the infrared receiving tube into a standard level signal;

Step S3, the output level of the level conversion module 1 is sampled by the voltage comparison unit 2, and when the level conversion module 1 outputs a level corresponding to the face sensing signal, the voltage comparison unit 2 outputs a trigger signal;

Step S4, whether the MCU control module 3 receives the trigger signal, and if yes, step S5 is performed, and if not, the output port is closed;

In step S5, the MCU control module 3 outputs a PWM pulse signal according to the trigger signal, and the LED photon module 4 is driven by the PWM pulse signal to generate a photon signal, and the LED photon mode is utilized. The photon signal generated by block 4 is used to cosmeticize the human face.

The invention discloses a human face infrared detecting device and method for a photon beauty instrument, which can easily and effectively detect whether a photon beauty instrument is worn on a human face, and can automatically detect and recognize after the device leaves the body at a certain distance or is removed. The automatic control photon beauty instrument photon light is turned on or off, which not only effectively avoids the damage caused by the photon beauty LED to the direct eyes of the human eye, but also achieves the purpose of saving electricity, making it more convenient and more humanized in the process of using the product.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention. All modifications, equivalents, and improvements made within the technical scope of the present invention are intended to be included within the scope of the present invention.

Claims

A human face infrared detecting device for a photon beauty instrument, characterized in that it comprises a mask disposed on a photon beauty instrument:

Infrared tube sensor (IR1), the infrared tube sensor (IR1) includes an infrared emitting tube and an infrared receiving tube both facing the human body surface, and the infrared light emitted by the infrared emitting tube is reflected by the human body surface to the infrared receiving tube The infrared receiving tube outputs a facial sensing signal;

The level conversion module (1) is electrically connected to the output end of the infrared receiving tube, and the level converting module (1) is configured to shape the signal output by the infrared receiving tube into a standard level signal;

The voltage comparison unit (2) is electrically connected to the output end of the level conversion module (1), and the voltage comparison unit (2) is configured to sample the output level of the level conversion module (1), and when When the level conversion module (1) outputs a level corresponding to the face sensing signal, the voltage comparison unit (2) outputs a trigger signal;

The MCU control module (3) is electrically connected to an output end of the voltage comparison unit (2), and the MCU control module (3) is configured to output a PWM pulse signal when it receives the trigger signal, and when it is not received Turn off its output port when the trigger signal is reached;

The LED photo sub-module (4) is electrically connected to the MCU control module (3), and the LED photon module (4) is driven by the PWM pulse signal to generate a photon signal.
The human face infrared detecting device for a photon beauty instrument according to claim 1, wherein the anode of the infrared transmitting tube is connected to the power supply end, and the cathode thereof is grounded through a first current limiting resistor (R1), the infrared The collector of the receiving tube is connected to the power terminal, and the emitter thereof is used as an output end of the infrared tube sensor (IR1), and is used for outputting a facial sensing signal.
The human face infrared detecting device for a photon beauty instrument according to claim 1, wherein the level converting module (1) comprises an NPN tube (Q1), and a collector of the NPN tube (Q1) Connected to the power supply terminal through a second current limiting resistor (R5), the emitter of the NPN tube (Q1) is grounded, The base is used to access the face sensing signal, and the collector of the NPN transistor (Q1) serves as an output of the level shifting module (1) and is used to output a standard level signal.
The human face infrared detecting device for a photon beauty instrument according to claim 1, wherein the voltage comparing unit (2) comprises a voltage comparator (U1), a first voltage dividing resistor (R3), and a Dividing resistor (R4), the first voltage dividing resistor (R3) and the second voltage dividing resistor (R4) are connected in series between the power terminal and the ground, and the connection point voltage of the two is transmitted to the voltage comparator (U1) The inverting terminal of the voltage comparator (U1) is connected to the output terminal of the level converting module (1), and the output of the voltage comparator (U1) is connected to the MCU control module (3) .
The human face infrared detecting device for a photon beauty instrument according to claim 4, wherein the inverting terminal of the voltage comparator (U1) is further connected to the power supply terminal through a pull-up resistor (R2).
The invention relates to a human face infrared detecting method for a photon beauty instrument, which is characterized in that the method is implemented based on a human face infrared detecting device, and the human face infrared detecting device comprises an infrared pair tube sensor (IR1) and a level conversion module. (1) a voltage comparison unit (2), an MCU control module (3), and an LED photo sub-module (4), wherein the infrared-pair tube sensor (IR1) includes an infrared emission tube and an infrared receiving tube each facing the human body surface. The method includes the following steps:

Step S1, using the infrared emitting tube to emit infrared light, when the infrared light is reflected by the human body surface to the infrared receiving tube, the infrared receiving tube outputs a facial sensing signal;

Step S2, the level conversion module (1) shapes the signal output by the infrared receiving tube into a standard level signal;

Step S3, using the voltage comparison unit (2) to sample the output level of the level conversion module (1), and when the level conversion module (1) outputs a level corresponding to the face sensing signal, The voltage comparison unit (2) outputs a trigger signal;

Step S4, whether the MCU control module (3) receives the trigger signal, and if so, Step S5, if not, close its output port;

Step S5, the MCU control module (3) outputs a PWM pulse signal according to the trigger signal, and the LED pulse sub-module (4) is driven by the PWM pulse signal to generate a photon signal, and the photon generated by the LED photonic module (4) is used. The signal is applied to the face of the human body.