CN116758684A

CN116758684A - A light wake-up system and method

Info

Publication number: CN116758684A
Application number: CN202310710404.9A
Authority: CN
Inventors: 陈杰; 王欢欢
Original assignee: Xian Aeronautical University
Current assignee: Xian Aeronautical University
Priority date: 2023-06-15
Filing date: 2023-06-15
Publication date: 2023-09-15
Anticipated expiration: 2043-06-15
Also published as: CN116758684B

Abstract

The application discloses a light awakening system and a method, which are characterized in that a record of a awakened service object in a sleeping state is acquired, awakening time is set, then the time of the Internet is read, the read time is compared with the set awakening time, when the two times are consistent, awakening service is started, sound around the awakened service object is detected and acquired while the awakening service is started, the acquired sound and the record are subjected to cross-correlation operation to obtain a cross-correlation coefficient u, when u is larger than 0.5, the awakened service object is not awakened, the awakening service is repeated, when u is smaller than 0.5, the awakened service object is awakened, and the awakening service is stopped. The light wake-up system comprises a display module, a WiFi module, a key array module, an intelligent chip, a capacitor microphone, a DAC chip and a light emitting diode array module. The optical wake-up system and the method can effectively solve the problem that other people can be disturbed while the served object is awakened.

Description

Optical wake-up system and method

Technical Field

The application belongs to the technical field of signal processing, and particularly relates to an optical wake-up system and an optical wake-up method.

Background

Conventional wake-up devices, such as alarm clocks, may interfere with surrounding people, including bulkheads, upstairs, downstairs, during use of the shock wake-up device. If the sound setting of the alarm clock is too small to play a role of waking up and too large, serious sound interference can be caused to other people in many occasions including early morning waking up and in a meeting, and the same problem exists in the vibration waking device.

Disclosure of Invention

In order to solve the problems in the prior art, the application provides a light wake-up method, which is characterized in that a record of a awakened service object in a state of falling asleep is obtained, wake-up time is set, then the time of the Internet is read, the read time of the Internet is compared with the set wake-up time, when the two times are consistent, wake-up service is started, sound around the awakened service object is detected and obtained while the wake-up service is started, the obtained sound and the record are subjected to cross-correlation operation to obtain a cross-correlation coefficient u, when u is larger than 0.5, the awakened service object is not awakened, at the moment, wake-up service is repeated, when u is smaller than 0.5, the awakened service object is awakened, and the wake-up service is stopped.

Further, the recording of the awakened service object in the deep sleep state can be manually set, the total recording duration is set to be T minutes, the recorded recording period is divided into N small segments, the duration of each small segment is equal, and f is used for recording in the ith segment _i (t) the expression of (a) is,t represents the recording duration in seconds, i=1, 2, 3..n, and the average value of the entire recording period is calculated as f (t):

Further, the method detects and acquires the sound around the awakened service object, and the detection duration is thatDenoted as x (t), and calculates the cross-correlation coefficient u of x (t) and f (t),

where N is the number of divided recording periods, cov represents covariance operation, and D represents variance operation.

The application also provides a light waking system, which comprises a display module, a WiFi module, a key array module, an intelligent chip, a capacitor microphone, a DAC chip and a light emitting diode array module, wherein the intelligent chip is connected to the Internet through the WiFi module and is used for reading real-time of the Internet, the intelligent chip is in wireless connection with a user mobile phone, the user mobile phone sends instructions of timing waking time and waking mode to the intelligent chip through the WiFi module, the display module is connected with the intelligent chip, the waking time is displayed on the display module, the instructions represented by the keys are transmitted to the intelligent chip through pressing the keys, the intelligent chip executes operations of inputting and outputting instruction information according to the key instructions, the capacitor microphone is connected to an ADC port of the intelligent chip, the DAC chip converts digital signals output by the intelligent chip into analog signals, an output end of the DAC chip is sequentially connected with the voltage-controlled resistor, the light emitting diode array module, an NMOS tube and a grounding end, and the on-off of the NMOS tube is controlled by the intelligent chip.

Further, the output voltage of the DAC chip may control the voltage-controlled resistor, so as to control the current flowing through the led array module, where the brightness of the leds in the led array module may change with the change of the current.

Further, the brightness of the light emitting diode is controlled by the intelligent chip to be changed from minimum to maximum, and is continuously lighted for 3 seconds at the maximum brightness, then is extinguished for 0.5 seconds, and the operation is repeated, and when the wake-up service is stopped, the intelligent chip controls the brightness of the light emitting diode to be reduced to 1/3 of the maximum brightness and maintained.

Further, the 16 keys on the key array module are arranged according to four rows and four columns, and include a number key and a command key, where the number key includes: 0. 1,2,3, 4, 5, 6, 7, 8, 9, the command key comprising: six keys of confirm, delete, timing, real-time calibration, reset and standby functions.

Further, the wake-up service time can be set by pressing the timing key, different wake-up times can be set by pressing the standby key once, so that the intelligent chip is in a standby state, and the intelligent chip is in a starting state by pressing the standby key once again.

Further, the analog quantity of the digital signal output by the intelligent chip to the DAC chip is 12 bits.

Further, the capacitor microphone may detect and record the sound of the awakened service object, before the awakening service is started, the capacitor microphone detects and records the sound of the awakened service object in a state of falling asleep, the record signal is input into the intelligent chip for storage, and when the awakening service is started, the capacitor microphone detects and listens the sound around the awakened service object, and the listening sound signal is input into the intelligent chip.

Compared with the prior art, the application adopts the mode of waking up by light, and can not affect other people except the served object to be waken up.

Drawings

Fig. 1 is a schematic diagram of an optical wake-up system according to the present application.

Detailed Description

The present application will be further illustrated by the following description of the drawings and specific embodiments, wherein it is apparent that the embodiments described are some, but not all, of the embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

The application provides an optical wake-up system with the combination of the accompanying drawing 1, which comprises a display module, a WiFi module, a key array module, an intelligent chip, a capacitor microphone, a DAC chip, a light-emitting diode array module, a voltage-controlled resistor, a direct-current power supply VCC, an NMOS tube M3 and a grounding end. The output end of the intelligent chip is respectively connected with the display module, the DAC chip and the NMOS tube M3, the input end of the intelligent chip is respectively connected with the WiFi module, the key array module and the capacitor microphone, the output end of the DAC chip is connected with the voltage-controlled resistor, one end of the voltage-controlled resistor is connected with the direct current power supply VCC, the other end of the voltage-controlled resistor is connected with the LED array module, one end of the NMOS tube M3 is connected with the LED array module, and the other end of the NMOS tube M3 is connected with the grounding end. The current provided by the direct current power supply VCC flows through the voltage-controlled resistor, the light emitting diode array module and the NMOS tube M3 in sequence to reach the ground terminal.

The intelligent chip is connected to the Internet network through the WiFi module and is used for reading real-time of the Internet network, the intelligent chip is in wireless connection with a user mobile phone, the user mobile phone sends a command of timing wake-up time and wake-up mode to the intelligent chip through the WiFi module, the display module is connected with the intelligent chip, the wake-up time and the wake-up mode can be displayed on the display module, 16 different keys can be contained on the key array module, but not limited to 16 keys are contained, the command represented by the keys is transmitted to the intelligent chip through pressing the keys, the intelligent chip performs operation of inputting and outputting command information according to the key command, the capacitor microphone is connected to an ADC port of the intelligent chip, the DAC chip converts a digital signal output by the intelligent chip into an analog signal, the DAC chip is connected with the power supply and the LED array module through a voltage-controlled resistor, an NMOS tube is further connected between the LED array module and a grounding end, and the on and off of the NMOS tube is controlled by the intelligent chip.

According to the embodiment of the application, the magnitude of the output voltage of the DAC chip can control the magnitude of the voltage-controlled resistor, so that the magnitude of the current flowing through the light-emitting diode array module is controlled.

According to an embodiment of the application, the model of the WiFi module in FIG. 1 is ESP8266.

According to the embodiment of the application, the brightness of the light emitting diodes in the light emitting diode array module changes along with the change of the current.

According to an embodiment of the present application, taking an example of setting 16 keys on a key array module, the 16 keys on the key array module are arranged according to four rows and four columns, and include a number key and a command key, where the number key includes: 0. 1,2,3, 4, 5, 6, 7, 8, 9, the command key comprising: six keys of confirm, delete, timing, real-time calibration, reset and standby functions.

The number key can be pressed to complete the number input and is directly displayed on the display module, namely the display module correspondingly displays the set wake-up service time. Pressing the confirm button is used for confirming the input number, and pressing the delete button is used for deleting the input number. The confirmation key press once also means that the information displayed on the display module is subjected to an execution operation. The delete key presses once to indicate the one digit before the cursor when the digit was entered is deleted. The wake-up service time can be set by pressing the timing key, and three different wake-up times can be set for the wake-up service time, wherein the time format is yyyy: mm: hh format. The reset key is pressed once to reset the intelligent chip. Pressing the standby button once can enable the intelligent chip to be in a standby state, and pressing the standby button once again can enable the intelligent chip to be in a starting state. Pressing the standby and timing keys simultaneously performs a page turning function and sequentially displays different timing time information. Pressing the standby and real-time calibration buttons simultaneously displays the real-time of the Internet network.

According to the embodiment of the application, the analog quantity of the digital signal output by the intelligent chip to the DAC chip is 12 bits. When the output voltage of the DAC chip is 0, the brightness of the light emitting diode is minimum.

According to an embodiment of the application, the direct current power supply VCC supplies power to the leds of the led array through a voltage controlled resistor. The output voltage of the DAC chip can control the voltage-controlled resistor, so that the current of the light-emitting diode is controlled, and the brightness of the light-emitting diode is changed when the current of the light-emitting diode is changed. The intelligent chip controls the brightness of the light emitting diode through the DAC chip and the voltage-controlled resistor. The brightness may be changed gradually or suddenly.

According to the embodiment of the application, M3 is an enhanced NMOS tube, and the intelligent chip can control the on and off of M3. When M3 is on, the LED is grounded, otherwise, the LED is disconnected from the ground, and no light emission is possible. Namely: the intelligent chip controls the light emitting diode to be in a bright state or a non-bright state through M3.

According to the embodiment of the application, the intelligent chip can be an FPGA, a DSP or an ARM chip, and can also be other embedded chips.

According to the embodiment of the application, the condenser microphone can listen to the sound around the light waking system, namely, the sound around the wakened service object, and input the sound signal to the intelligent chip.

According to an embodiment of the application, the method steps of the application for using optical wakeup comprise:

1. the intelligent chip is connected to the Internet network through the ESP8266, reads the real-time Internet network time and displays the real-time Internet network time on the display module;

2. the real-time and the wake-up time displayed on the display module are set through the key module;

3. the voice of the awakened service object when the service object sleeps down is detected through the capacitor microphone and recorded, the recording function can be set manually, and a time period can also be set, for example, recording is carried out from 1 to 2 am. Setting the total recording time length as T minutes, dividing the recorded recording time period into N small sections, wherein the time length of each small section is equal, and f is used _i (t) the expression of (a) is,t represents recording duration in seconds, i=1，2，3...N，

And storing f (t) as sound at the time of deep sleep into the smart chip.

4. At the set wake-up time, wake-up service is started, the intelligent chip firstly controls the brightness of the light emitting diode to change from minimum to maximum, and the light emitting diode is continuously lighted for 3 seconds at the maximum brightness, then extinguishes for 0.5 seconds, the intelligent chip detects the sound around the awakened service object through the capacitor microphone, and when receiving the stop sound, the intelligent chip automatically reduces the brightness of the diode to 1/3 of the maximum brightness and keeps the brightness to provide illumination.

Next, the condenser microphone detects sounds around the awakened service object for a period of timeDenoted as x (t), using a cross-correlation operation,

the cross-correlation coefficient u of x (t) and f (t) is calculated,

When the cross correlation coefficient u is larger than 0.5, the awakening step is repeated, and when the cross correlation coefficient u is smaller than 0.5, the awakening of the awakened service object is stopped.

According to the embodiment of the application, a served object using the optical wake-up system can send a sound instruction of stopping or closing to the optical wake-up system through the capacitor microphone, when the capacitor microphone detects the sound instruction of stopping sent by the served object, namely, the served object does not perform wake-up service any more, a signal of stopping wake-up is transmitted to the intelligent chip through the capacitor microphone, and the intelligent chip automatically reduces the brightness of the diode to 1/3 of the maximum brightness through controlling the DAC chip and keeps the brightness; when the capacitor microphone detects a sound instruction of closing sent by a served object, the wake-up service is closed, so that the system is in a standby state, and the sound signal of closing is transmitted to the intelligent chip through the capacitor microphone, and the intelligent chip is in a disconnection state through controlling the NMOS tube M3.

According to the embodiment of the application, the light emitted by the waking system in the waking process is relatively glaring light, and when the waking service is stopped, the light emitted by the waking system in the waking process is 1/3 of the light emitted by the waking system in the waking process, and the light is relatively soft, so that the waking service object can be provided with illumination but not glaring.

According to the embodiment of the application, when the optical wake-up system provided by the application is adopted for wake-up service, wake-up time can be set in advance on the optical wake-up system through the key module, the set wake-up time can be displayed on the display module, and then the optical wake-up system is placed in front of a to-be-awakened service object or in a place which is easily seen by the service object. When the set wake-up time is reached, the intelligent chip in the light wake-up system controls the NMOS tube M3 to be in a conducting state, after the intelligent chip transmits a wake-up signal to the DAC chip, the DAC chip controls the voltage-controlled resistor to enable the resistance value of the voltage-controlled resistor to be adjusted to 0, so that the light-emitting diode in the light-emitting diode module is lightened, after the last 3 seconds, the DAC chip controls the voltage-controlled resistor to enable the resistance value of the voltage-controlled resistor to be gradually increased to the maximum value, only tiny current passes through the light-emitting diode, the light-emitting diode is in a turned-off state and lasts for 0.5 seconds, the regulation and control operation is repeated for several times until the served object is awakened, and after a stop instruction sent by the served object is received, the intelligent chip controls the brightness of the light-emitting diode to be reduced to 1/3 of the maximum brightness and kept. When receiving a closing instruction sent by a service object or the service object directly presses a standby key, the intelligent chip directly controls the NMOS tube M3 to be in a disconnected state, the light emitting diode does not pass current, and the LED is in an off state, namely the light wake-up system is not lightened any more and is in the off state.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced with equivalents; such modifications and substitutions do not depart from the spirit of the technical solutions according to the embodiments of the present application.

Claims

1. A light-based wake-up method, characterized in that it acquires a recording of the user in a deep sleep state, sets a wake-up time, reads the internet time, compares the internet time with the set wake-up time, and activates the wake-up service when the two times match.

While activating the wake-up service, the system detects and acquires the sounds around the person being woken up. The acquired sounds and recordings are cross-correlated to obtain a cross-correlation coefficient u. When u is greater than 0.5, it means that the person being woken up has not been woken up, and the wake-up service is repeated. When u is less than 0.5, it means that the person being woken up has been woken up, and the wake-up service is stopped.

2. The light-based wake-up method according to claim 1, characterized in that the acquisition of the recording of the awakened service recipient in a deep sleep state can be manually set, assuming the total recording duration is T minutes, and the recording time after recording is divided into N small segments, each segment having an equal duration, and the recording of the i-th segment is represented by _fi (t). t represents the recording duration in seconds, i = 1, 2, 3...N. The average value for the entire recording period is represented by f(t):

3. The light-based wake-up method according to claim 2, characterized in that the detection and acquisition of sounds around the service recipient being woken up takes a detection duration of [duration missing]. Let x(t) be the expression, and calculate the cross-correlation coefficient u between x(t) and f(t).

Where N is the number of recording segments divided into, Cov represents covariance operation, and D represents variance operation.

4. A light wake-up system based on the light wake-up method according to claims 1-3, characterized in that it comprises a display module, a WiFi module, a button array module, a smart chip, a condenser microphone, a DAC chip, and a light-emitting diode array module.

The smart chip connects to the internet via the WiFi module to read the real-time internet time.

The smart chip is wirelessly connected to the user's mobile phone, and the user's mobile phone sends instructions on the timed wake-up time and wake-up method to the smart chip via a WiFi module.

The display module is connected to the smart chip, and the wake-up time will be displayed on the display module.

By pressing a button, the command represented by the button is transmitted to the smart chip, which then executes the input and output operations of the command information according to the button command.

The condenser microphone is connected to the ADC port of the smart chip.

The DAC chip converts the digital signal output by the smart chip into an analog signal. The output terminal of the DAC chip is connected in sequence to the voltage-controlled resistor, the light-emitting diode array module, the NMOS transistor, and the ground terminal. The conduction and shutdown of the NMOS transistor are controlled by the smart chip.

5. A light-based wake-up system according to claim 4, characterized in that the output voltage of the DAC chip can control the magnitude of the voltage-controlled resistor, thereby controlling the magnitude of the current flowing through the light-emitting diode array module, and the brightness of the light-emitting diodes in the light-emitting diode array module changes with the change of current.

6. The light wake-up system according to claim 5, characterized in that, when the wake-up service is activated, the intelligent chip controls the brightness of the light-emitting diode to change from minimum to maximum, and keeps it lit for 3 seconds at maximum brightness, then turns it off for 0.5 seconds, and repeats this operation; when the wake-up service is stopped, the intelligent chip controls the brightness of the light-emitting diode to decrease to 1/3 of the maximum brightness and maintains it.

7. A light-based wake-up system according to claim 4, characterized in that the 16 buttons on the button array module are arranged in four rows and four columns, including number buttons and command buttons.

The numeric keypad includes nine keys: 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9.

The command buttons include six functions: Confirm, Delete, Timer, Real-time Time Calibration, Reset, and Standby.

8. A light-based wake-up system according to claim 4, characterized in that pressing the timer button can set the wake-up service time, and the wake-up service time can be set to different wake-up times.

Pressing the standby button once puts the smart chip into standby mode, and pressing the standby button again turns the smart chip into power-on mode.

9. The light wake-up system according to claim 4, wherein the digital signal analog quantity output by the smart chip to the DAC chip is 12 bits.

10. A light-based wake-up system according to claim 4, characterized in that the condenser microphone can detect, listen to, and record the voice of the person being woken up.

Before activating the wake-up service, the condenser microphone detects and records the sounds of the person being woken up while they are asleep, and then inputs the recording signal into the smart chip for storage.

When the wake-up service is activated, the condenser microphone detects and listens to the sounds around the person being woken up, and inputs the listened sound signals into the smart chip.