CN116758684B - Light wake-up system and method - Google Patents

Abstract

The present invention discloses a light awakening system and method, which obtains a recording of a service object being awakened in a deep sleep state, sets a wake-up time, then reads the time on the Internet, and then compares the read time with the set wake-up time. When the two times are consistent, the wake-up service is turned on. While the wake-up service is turned on, the sound around the service object being awakened is detected and obtained, and the obtained sound and the recording are cross-correlated to obtain a correlation coefficient u. When u is greater than 0.5, it indicates that the service object being awakened is not awakened, and the wake-up service is repeated. When u is less than 0.5, it indicates that the service object being awakened is awakened, and the wake-up service is stopped. The light awakening system includes a display module, a WiFi module, a button array module, a smart chip, a capacitor microphone, a DAC chip, and a light-emitting diode array module. The light awakening system and method provided by the present invention can effectively solve the problem that other people will be disturbed while waking up the service object.

Description

Light wake-up system and method

Technical Field

The invention belongs to the technical field of signal processing, and in particular relates to a light wake-up system and method.

Background technique

Traditional wake-up devices, such as alarm clocks, may cause disturbances to people around them, including those next door, upstairs, and downstairs. If the alarm clock volume is set too low, it may not wake people up. If the volume is set too high, it will cause serious sound disturbance to others in many occasions, including waking up in the early morning and in meetings. The same problem exists in the vibration wake-up device.

Summary of the invention

In order to solve the problems in the prior art, the present invention provides an optical wake-up method, which obtains a recording of a service object being awakened in a deep sleep state, sets a wake-up time, then reads the time on the Internet, and compares the time read from the Internet with the set wake-up time. When the two times are consistent, the wake-up service is turned on. While the wake-up service is turned on, the sound around the service object being awakened is detected and obtained, and the obtained sound and the recording are subjected to a cross-correlation operation to obtain a mutual correlation coefficient u. When u is greater than 0.5, it indicates that the service object being awakened is not awakened, and the wake-up service is repeated. When u is less than 0.5, it indicates that the service object being awakened is awakened, and the wake-up service is stopped.

Furthermore, the recording of the awakened service object in a deep sleeping state can be manually set. Assume that the total recording time is T minutes, and the recording period after the recording is divided into N small segments, each of which has the same length. The recording of the i-th segment is represented by _fi (t). t represents the recording duration in seconds, i = 1, 2, 3...N, and the average value of the entire recording period is expressed as f(t):/>

Furthermore, the detection and acquisition of the sounds around the awakened service object is performed for a period of Denote it as x(t), and calculate the mutual correlation coefficient u between x(t) and f(t),

Wherein, N is the number of recording time periods, Cov represents the covariance operation, and D represents the variance operation.

The present invention also provides a light wake-up system. The system based on the light wake-up method includes a display module, a WiFi module, a key array module, a smart chip, a capacitor microphone, a DAC chip and a light emitting diode array module. The smart chip is connected to the Internet through the WiFi module to read the real-time time of the Internet. The smart chip is wirelessly connected to a user's mobile phone. The user's mobile phone sends instructions for a scheduled wake-up time and a wake-up method to the smart chip through the WiFi module. The display module is connected to the smart chip, and the wake-up time is displayed on the display module. The instruction represented by the key is transmitted to the smart chip by pressing a key. The smart chip performs input and output operations of instruction information according to the key instruction. The capacitor 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 end of the DAC chip is sequentially connected to the voltage-controlled resistor, the light emitting diode array module, the NMOS tube and the ground end, and the conduction and closing of the NMOS tube are controlled by the smart chip.

Furthermore, the output voltage of the DAC chip can control the size of the voltage-controlled resistor, thereby controlling the current flowing through the LED array module. The brightness of the LEDs in the LED array module will change with the change of the current.

Furthermore, the smart chip controls the brightness of the light-emitting diode to change from minimum to maximum, and stays on for 3 seconds at maximum brightness, then turns off for 0.5 seconds, and repeats this operation. When the wake-up service is stopped, the smart chip controls the brightness of the light-emitting diode to decrease to 1/3 of the maximum brightness and maintains it.

Furthermore, the 16 keys on the key array module are arranged in four rows and four columns, including numeric keys and command keys. The numeric keys include nine types of keys: 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9. The command keys include six types of keys: confirm, delete, timing, real-time time calibration, reset, and standby function.

Furthermore, pressing the timing button can set the wake-up service time, and the wake-up service time can set different wake-up times. Pressing the standby button once can put the smart chip into standby mode, and pressing the standby button again can put the smart chip into power-on mode.

Furthermore, the analog value of the digital signal output by the smart chip to the DAC chip is 12 bits.

Furthermore, the condenser microphone can detect and listen to the voice of the service object to be awakened and record it. Before starting the wake-up service, the condenser microphone detects and records the voice of the service object to be awakened in a deep sleeping state, and inputs the recorded signal into the smart chip for storage. When starting the wake-up service, the condenser microphone detects and listens to the sounds around the service object to be awakened, and inputs the listened sound signal into the smart chip.

Compared with the prior art, the present invention adopts a light-based waking-up method, which will not affect other people except the service object being awakened. The light-based waking-up system provided by the present invention has a simple structure and is easy to operate. The light-based waking-up method provided by the present invention effectively solves the problem of waking up the service object without affecting other people.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic structural diagram of a light awakening system of the present invention.

Detailed ways

The present invention is further explained below in conjunction with the drawings and specific embodiments of the specification. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

The present invention, in combination with the accompanying drawing 1, provides a light wake-up system, the system includes a display module, a WiFi module, a key array module, a smart chip, a capacitor microphone, a DAC chip, a light emitting diode array module, a voltage-controlled resistor, a DC power supply VCC, an NMOS tube M3 and a ground terminal. The output end of the smart chip is respectively connected to the display module, the DAC chip and the NMOS tube M3, the input end of the smart chip is respectively connected to the WiFi module, the key array module and the capacitor microphone, the output end of the DAC chip is connected to the voltage-controlled resistor, one end of the voltage-controlled resistor is connected to the DC power supply VCC, and the other end is connected to the light emitting diode array module, one end of the NMOS tube M3 is connected to the light emitting diode array module, and the other end is connected to the ground terminal. The current provided by the DC power supply VCC flows through the voltage-controlled resistor, the light emitting diode array module and the NMOS tube M3 in sequence and then reaches the ground terminal.

The smart chip is connected to the Internet network through the WiFi module to read the real-time time of the Internet network. The smart chip is wirelessly connected to the user's mobile phone. The user's mobile phone sends instructions for the scheduled wake-up time and wake-up method to the smart chip through the WiFi module. The display module is connected to the smart chip, and the wake-up time and wake-up method will be displayed on the display module. The key array module can include 16 different keys but is not limited to 16 keys. The instructions represented by the keys are transmitted to the smart chip by pressing the keys. The smart chip performs the input and output operations of the instruction information according to the key instructions. The capacitive 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 DAC chip is connected to the power supply and the light-emitting diode array module through a voltage-controlled resistor. An NMOS tube is also connected between the light-emitting diode array module and the ground terminal. The conduction and closing of the NMOS tube are controlled by the smart chip.

According to an embodiment of the present invention, the magnitude of 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.

According to an embodiment of the present invention, the WiFi module model in FIG1 is ESP8266.

According to an embodiment of the present invention, the brightness of the light emitting diodes in the light emitting diode array module varies with the change of the current.

According to an embodiment of the present invention, taking the example of 16 keys being arranged on a key array module, the 16 keys on the key array module are arranged in four rows and four columns, and include numeric keys and command keys. The numeric keys include nine types of keys: 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9, and the command keys include six types of keys: confirm, delete, timing, real-time time calibration, reset, and standby function.

Among them, pressing the number button can be used to complete the number input and directly display it on the display module, that is, the set wake-up service time will be displayed on the display module accordingly. Pressing the confirmation button is used to confirm the input number, and pressing the delete button is used to delete the input number. Pressing the confirmation button once also means that the information displayed on the display module is executed. Pressing the delete button once means deleting a number before the cursor when the number is input. Pressing the timing button can set the wake-up service time, and the wake-up service time can set three different wake-up times, and the time format is yyyy:mm:hh format. Pressing the reset button once can reset the smart chip. Pressing the standby button once can put the smart chip in standby mode, and pressing the standby button again can put the smart chip in power-on mode. Pressing the standby and timing buttons at the same time will execute the page turning function and display different timing time information in sequence. Pressing the standby and real-time time calibration buttons at the same time will display the real-time time of the Internet network.

According to an embodiment of the present invention, the analog quantity of the digital signal output by the smart 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 present invention, a DC power supply VCC supplies power to the light-emitting diodes in the light-emitting diode array through a voltage-controlled resistor. The magnitude of the output voltage of the DAC chip can control the magnitude of the voltage-controlled resistor, thereby controlling the magnitude of the current of the light-emitting diode, and the brightness will change when the current of the light-emitting diode changes. The smart chip controls the brightness of the light-emitting diode through the DAC chip and the voltage-controlled resistor. The brightness can change gradually or suddenly.

According to an embodiment of the present invention, M3 is an enhanced NMOS transistor, and the smart chip can control the on and off of M3. When M3 is on, the light-emitting diode is grounded, otherwise the light-emitting diode is disconnected from the ground and cannot emit light. That is, the smart chip controls the light-emitting diode to be in a bright state or a dark state through M3.

According to an embodiment of the present invention, the smart chip may be a FPGA, a DSP or an ARM chip, or may be other embedded chips.

According to the embodiment of the present invention, the capacitive microphone can listen to the sounds around the light wake-up system, that is, listen to the sounds around the service object to be woken up, and input the sound signal to the smart chip.

According to an embodiment of the present invention, the method steps of using light to wake up the user include:

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

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

3. Use a condenser microphone to detect the sound of the service object being awakened while sleeping and record it. The recording function can be set manually or in a time period, such as from 1 am to 2 am. Suppose the total recording time is T minutes, and the recording time period is divided into N small segments, each of which is of equal length, represented by _fi (t). t represents the recording duration in seconds, i = 1, 2, 3...N,

And f(t) is stored in the smart chip as the sound of deep sleep.

4. At the set wake-up time, start the wake-up service. First, the smart chip controls the brightness of the light-emitting diode from minimum to maximum, and keeps it on for 3 seconds at maximum brightness, then turns it off for 0.5 seconds, and repeats this operation. The smart chip detects the sounds around the service object being awakened through a condenser microphone. When a "stop" sound is received, the brightness of the diode is automatically reduced to 1/3 of the maximum brightness and maintained to provide lighting.

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

Calculate the mutual correlation coefficient u between x(t) and f(t),

Wherein, N is the number of recording time periods, Cov represents the covariance operation, and D represents the variance operation.

When the mutual correlation coefficient u is greater than 0.5, it means that the awakened service object is not awakened, and the awakening step is repeated. When the mutual correlation coefficient u is less than 0.5, it means that the awakened service object is awakened, and the awakening step is stopped.

According to an embodiment of the present invention, the service recipient of the light wake-up system of the present invention can send a voice command of "stop" or "turn off" to the light wake-up system through a condenser microphone. When the condenser microphone detects the voice command of "stop" sent by the service recipient, it means that the wake-up service will no longer be provided. The "stop" wake-up signal is transmitted to the smart chip through the condenser microphone, and the smart chip automatically reduces the brightness of the diode to 1/3 of the maximum brightness and maintains it by controlling the DAC chip; when the condenser microphone detects the voice command of "turn off" sent by the service recipient, the wake-up service is turned off and the system is put in a standby state. The "turn off" voice signal is transmitted to the smart chip through the condenser microphone, and the smart chip controls the NMOS tube M3 to be in a disconnected state.

According to an embodiment of the present invention, the light emitted by the wake-up system of the present invention during the wake-up process is a relatively dazzling light, and when the wake-up service is stopped, the brightness of the light emitted is 1/3 of the brightness of the light emitted during the wake-up process. The light at this time is relatively soft and can provide lighting for the wake-up service object without being dazzling.

According to an embodiment of the present invention, when the light wake-up system provided by the present invention is used for wake-up service, the wake-up time can be set in advance on the light wake-up system of the present invention through the key module, and the set wake-up time will be displayed on the display module, and then the light wake-up system is placed in front of the service object being woken up or in a place where the service object can easily see it. When the set wake-up time is reached, the smart chip in the light wake-up system will control the NMOS tube M3 to be in a conductive state, and the smart chip will transmit the wake-up signal to the DAC chip, and the DAC chip will control the voltage-controlled resistor to adjust the resistance value of the voltage-controlled resistor to 0, so that the light-emitting diode in the light-emitting diode module will light up, and after 3 seconds, the DAC chip will control the voltage-controlled resistor to gradually increase the resistance value of the voltage-controlled resistor to the maximum value, and only a very small current will pass through the light-emitting diode, and the light-emitting diode will be in an off state and last for 0.5 seconds. Repeat the control operation several times until the service object is woken up, and after receiving the "stop" command issued by the service object, the smart chip controls the brightness of the light-emitting diode to be reduced to 1/3 of the maximum brightness and maintain it. When receiving the "off" command from the service object or the service object directly presses the standby button, the smart chip will directly control the NMOS tube M3 to be in the off state, and the light emitting diode will not pass current and will be in the off state, that is, the light wake-up system will no longer light up and will be in the off state.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims (9)

1. A light wake-up method, characterized in that a recording of the service object being awakened in a deep sleeping state is obtained, and a wake-up time is set, and then the time on the Internet is read, and then the time read on the Internet is compared with the set wake-up time. When the two times are consistent, the wake-up service is started. When the wake-up service is turned on, the sound around the service object to be awakened is detected and obtained, and the obtained sound and the recording are cross-correlated to obtain the correlation coefficient u . When u is greater than 0.5, it means that the service object to be awakened is not awakened, and the wake-up service is repeated. When u is less than 0.5, it means that the service object to be awakened is awakened, and the wake-up service is stopped. When the wake-up service is turned on, the smart chip controls the brightness of the LED to change from minimum to maximum, and stays on for 3 seconds at maximum brightness, then turns off for 0.5 seconds, and repeats this operation. When the wake-up service is stopped, the smart chip controls the brightness of the LED to decrease to 1/3 of the maximum brightness and maintain it. The recording of the service object being awakened in a deep sleeping state can be set manually. Assume that the total recording time is T minutes, and the recording period after the recording is divided into N small segments, each of which has the same length. The recording of the i- th segment is express, , t represents the recording duration in seconds , i = 1, 2, 3... N , calculate the average value of the entire recording period/> express: . 2. The light awakening method according to claim 1, characterized in that the detection and acquisition of the sounds around the awakened service object is performed for a detection period of , expressed as/> , and calculate/> and/> The mutual correlation coefficient u of Wherein, N is the number of recording time periods into which the recording is divided, Cov represents the covariance operation, and D represents the variance operation. 3. A light wake-up system based on the light wake-up method according to any one of claims 1-2, characterized in that it comprises a display module, a WiFi module, a key array module, a smart chip, a condenser microphone, a DAC chip and a light emitting diode array module, The smart chip is connected to the Internet through the WiFi module to read the real-time time of the Internet. The smart chip is wirelessly connected to the user's mobile phone, and the user's mobile phone sends instructions on the scheduled wake-up time and wake-up method to the smart chip through the 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 instruction represented by the button is transmitted to the smart chip, and the smart chip performs the input and output operations of the instruction information according to the button instruction. 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 end of the DAC chip is connected to the voltage-controlled resistor, the light-emitting diode array module, the NMOS tube and the ground end in sequence. The conduction and closing of the NMOS tube are controlled by the smart chip. 4. A light wake-up system according to claim 3, characterized in that the output voltage of the DAC chip can control the size of the voltage-controlled resistor, thereby controlling 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 will change with the change of the current. 5. The light wake-up system according to claim 4 is characterized in that when the wake-up service is turned on, the smart chip controls the brightness of the light-emitting diode to change from minimum to maximum, and stays on for 3 seconds at maximum brightness, then turns off for 0.5 seconds, and repeats this operation; when the wake-up service is stopped, the smart chip controls the brightness of the light-emitting diode to decrease to 1/3 of the maximum brightness and maintain it. 6. The light wake-up system according to claim 3, characterized in that the 16 keys on the key array module are arranged in four rows and four columns, including numeric keys and command keys. The digital keys include: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9. The command buttons include six buttons: confirm, delete, timing, real-time time calibration, reset and standby. 7. The optical wake-up system according to claim 3 is characterized in that the wake-up service time can be set by pressing the timing button, and the wake-up service time can be set to different wake-up times. Pressing the standby button once can put the smart chip into a standby state, and pressing the standby button again can put the smart chip into a power-on state. 8. The light wake-up system according to claim 3, characterized in that the analog value of the digital signal output by the smart chip to the DAC chip is 12 bits. 9. The optical wake-up system according to claim 3, characterized in that the capacitor microphone can detect and listen to the voice of the person being woken up and record it. Before starting the wake-up service, the condenser microphone detects the sound of the service object being woken up in a deep sleep state and records it, and inputs the recording signal into the smart chip for storage. When the wake-up service is turned on, the condenser microphone detects and listens to the sounds around the service object being woken up, and inputs the listened sound signal into the smart chip.