CN109349861A - A smart crib based on NB-IoT network - Google Patents

Abstract

The present invention provides a kind of based on the intelligent baby bed of NB-IoT network, comprising: recording public address module, temperature check module, NB-IoT unit and microprocessor；The body temperature information for the baby that the crying acoustic intelligence for the baby that the recording public address module received is sent and temperature check module are sent is changed into baby's relevant information that NB-IoT network unit can identify by microprocessor, the relevant information of NB-IoT network unit identification baby, and it is transferred to mobile terminal, mobile terminal shows the relevant information for the baby that NB-IoT network unit is sent and alarms.The beneficial effects of the present invention are: the low manufacture cost of the infanette, monitoring effect is good, can timely feedback the relevant information of baby, react in time convenient for user, conducive to the healthy growth of baby.

Description

A smart crib based on NB-IoT network

technical field

The invention relates to the field of intelligent furniture, in particular to an intelligent crib based on an NB-IoT network.

Background technique

For many new mothers and new fathers, the issue of child care cannot be underestimated, and cribs have been used by more and more young parents. Under normal circumstances, parents will stay with the baby to take care of them, but they cannot guarantee to take care of the baby all the time, and there will be occasional departures, especially at night; when the parents leave occasionally or rest at night, if the baby If there is discomfort, parents cannot sense it in time, and delaying the baby's discomfort is likely to affect the baby's health.

SUMMARY OF THE INVENTION

In order to solve the above problems, the present invention provides an intelligent crib based on the NB-IoT network, and an intelligent crib based on the NB-IoT network, which mainly includes: a recording and amplifying module, a body temperature detection module, an NB-IoT unit and a Microprocessors and mobile terminals; of which,

Recording and amplifying module: used to detect whether the baby makes a sound in real time;

Body temperature detection module: used to detect the baby's body temperature in real time;

Microprocessor: used to compare the sound of the baby sent by the sound recording module and the body temperature of the baby sent by the body temperature detection module with the cry of the baby and the normal temperature range of the baby pre-recorded in the microprocessor. In contrast, if the sound of the baby's cry detected by the audio recording module or the body temperature of the baby detected by the body temperature detection module is not within the normal body temperature range, the baby's cry and the baby's body temperature are converted into the NB-IoT network. Baby information that the unit can receive and transmit;

NB-IoT network unit: used to receive the baby information sent by the microprocessor and transmit it to the mobile communication terminal;

Mobile communication terminal: used to receive and display the baby-related information transmitted by the NB-IoT network unit and give an alarm.

The body temperature detection module, the recording and amplifying module and the NB-IoT network unit are respectively connected with the microprocessor;

The two pins of the body temperature detection module are respectively connected to the two pins of the microprocessor, and the two pins of the body temperature detection module are respectively connected to the positive terminal of the power supply through a pull-up resistor.

Further, the sound recording and amplifying module includes a sound recording component and a sound amplification component; the sound recording component is used to record the sound made by the baby, and when the sound made by the baby is small, the sound amplification component can amplify the sound made by the baby, so that the sound recording component can clearly 's recording.

Further, the audio power amplifier LM386 is selected for the amplifying component, the first signal end of the recording component in the sound recording and amplifying module is connected to the positive terminal of the power supply through a voltage divider resistor, and the first signal end of the recording component is connected in series with a filter capacitor and a variable After adjusting the resistance, it is grounded, and the second signal end of the recording component is connected to a signal pin of the microprocessor and then grounded.

Further, it also includes a music player, and the music player includes a speaker; when the mobile communication terminal used by the user issues an alarm, the user controls the music player on the mobile communication terminal to play music to soothe the baby; the mobile communication terminal can control the music player. Switches and selection of music tracks; the mobile communication terminal associates the smart crib based on the NB-IoT network by downloading the relevant APP.

Further, the body temperature detection module is a non-contact infrared temperature sensor, which scans the baby's forehead by infrared rays to monitor the baby's body temperature in time.

Further, the baby's cry information and the baby's normal body temperature information are pre-recorded in the microprocessor, and the baby's cry information and the baby's body temperature information sent by the body temperature detection module received by the microprocessor are recorded. Compared with the pre-recorded baby's cry information and the baby's normal body temperature information, if the processed sound is not the baby's cry detected by the recording amplifier module, or the baby's body temperature detected by the body temperature detection module is within the normal body temperature range. , the microprocessor does not perform conversion and transmission processing, that is, the microprocessor does not convert the sound of the baby sent by the recording amplifying module and the body temperature of the baby sent by the body temperature detection module into the NB-IoT network unit. The received and transmitted baby information is also not sent to the mobile communication terminal through the NB-IoT network unit.

Further, it also includes a power supply unit, the power supply unit includes a rechargeable battery with a USB interface; the power supply unit provides power for the recording and amplifying module, the body temperature detection module, the music player, the microprocessor and the NB-IoT network unit.

The beneficial effects brought by the technical solution provided by the present invention are: the baby crib has low production cost, good monitoring effect, can timely feedback the relevant information of the baby, facilitates the user to respond in time, and is beneficial to the healthy growth of the baby.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings and embodiments, in which:

1 is a structural diagram of a smart crib based on an NB-IoT network in an embodiment of the present invention;

FIG. 2 is a circuit connection diagram of a smart crib based on an NB-IoT network in an embodiment of the present invention.

Detailed ways

In order to have a clearer understanding of the technical features, objects and effects of the present invention, the specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

Embodiments of the present invention provide a smart crib based on an NB-IoT network.

Please refer to FIG. 1. FIG. 1 is a structural diagram of an NB-IoT network-based smart crib in an embodiment of the present invention, including: a smart crib body, a recording and amplifying module 2, a body temperature detection module 4, and an NB-IoT unit 5 and the microprocessor 1 and the mobile terminal; wherein,

Recording and amplifying module 2: used to detect whether the baby makes a sound in real time;

Body temperature detection module 4: used to detect the baby's body temperature in real time;

Microprocessor 1: used to compare the sound of the baby sent by the sound recording module and the body temperature of the baby sent by the body temperature detection module with the cry of the baby and the normal temperature range of the baby pre-recorded in the microprocessor In comparison, if the sound of the baby's cry detected by the audio recording module or the body temperature of the baby detected by the body temperature detection module is not within the normal body temperature range, the baby's cry and the baby's body temperature are converted into NB-IoT. Baby information that the network unit can receive and transmit;

NB-IoT network unit 5: used to receive the baby information sent by the microprocessor and transmit it to the mobile communication terminal;

Mobile communication terminal: used to display the baby-related information sent by the NB-IoT network unit 5 and give an alarm;

The body temperature detection module 4, the recording and amplifying module 2 and the NB-IoT network unit 5 are respectively connected with the microprocessor 1;

The two pins of the body temperature detection module 4 are respectively connected to the two pins of the microprocessor 1 , and the two pins of the body temperature detection module 4 are respectively connected to the positive terminal of the power supply through a pull-up resistor.

The recording and amplifying module 2 includes a recording component 21 and an amplifying component 22; the recording component 21 is used to record the sound made by the baby. The recording component 21 can record clearly.

Described amplifying component 22 selects audio frequency power amplifier LM386 for use, the first signal end of recording component 21 in sound recording and amplifying module 2 is connected to the positive terminal of the power supply through a voltage divider resistor, and the first signal end of recording component 21 is connected in series with filter capacitor and The adjustable resistance is grounded afterward, and the second signal end of the recording component 21 is connected to a signal pin of the microprocessor and then grounded.

The body temperature detection module 4 includes a high-precision array infrared temperature sensor 41, which scans the baby's forehead through infrared rays to monitor the baby's body temperature in time.

When the microprocessor 1 compares the sound of the baby sent by the sound recording and amplifying module 2 and the body temperature of the baby sent by the body temperature detection module 4 with the pre-recorded cry of the baby and the normal temperature range of the baby respectively, If the processed result is that the sound of the baby's cry is not detected by the recording and amplifying module or the body temperature of the baby detected by the body temperature detection module is within the normal body temperature range, the microprocessor does not perform conversion and transmission processing, that is, the micro-processor The processor does not convert the sound of the baby sent by the sound recording module and the body temperature of the baby sent by the body temperature detection module into the baby information that the NB-IoT network unit 5 can receive and transmit, nor send it to the NB-IoT network unit 5. mobile communication terminal.

An intelligent crib based on NB-IoT network, further comprising a music player 6 and a power supply unit 3; the music player includes a speaker; when the mobile communication terminal used by the user issues an alarm, the user controls the music player on the mobile communication terminal Play music to soothe the baby; the mobile communication terminal can control the switch of the music player and the selection of music tracks; the mobile communication terminal can associate the smart crib based on the NB-IoT network by downloading the relevant APP. When the user's mobile terminal issues an alarm, the user controls the music player on the mobile terminal to play music to soothe the baby; the power supply unit 3 includes a rechargeable battery 31 with a USB interface; the power supply unit 3 is a recording and amplifying module 2, a body temperature detection The module 4, the music player 6, the microprocessor 1 and the NB-IoT network unit 5 provide the required power.

Please refer to FIG. 2. FIG. 2 is a circuit connection diagram of a smart crib based on an NB-IoT network in an embodiment of the present invention. The circuit of the smart crib based on the NB-IoT network includes: a recording and amplifying module 2, a body temperature Detection module 4, NB-IoT unit and microprocessor 1;

Body temperature detection module: used to detect the baby's body temperature in real time; and transmit the monitored baby's body temperature to the microprocessor;

Recording and amplifying module: used to detect whether the baby makes a sound in real time;

NB-IoT network unit: used to transmit the signals of the abnormal body temperature of the baby and the cry of the baby sent by the microprocessor;

The body temperature detection module, the recording and amplifying module and the NB-IoT network unit are respectively connected with the microprocessor;

The non-contact temperature sensor MLX90614 has four pins: SCL, SDA, Vss and Vdd;

The STM32F103ZET6 microcontroller has a total of twenty pins: PA.4, PA.7, PA.10, PA.14, PA.15, PC.0, PC.1, PC.2, PC.13, GND, PB.0 , Vdd1, PC.11, NRST, VBAT, PD.4, PD.2, PB.8, PB.7 and PB.6;

The audio power amplifier LM386 has eight pins: GAIN, IN-, IN+, GND, GAIN, BYPS, VCC and VOUT;

The body temperature detection module selects the non-contact infrared temperature sensor MLX90614, the microprocessor selects the STM32F103ZET6 microcontroller, and the two signal pins SCL and SDA of the non-contact infrared temperature sensor MLX90614 are respectively connected to the two signal pins PB.6 of the microprocessor and PB.7, the two signal pins SCL and SDA of the non-contact infrared temperature sensor MLX90614 are connected to the positive terminal of the power supply through a pull-up resistor R3 and R4, respectively.

Wherein, the recording and amplifying module includes a recording component and an amplifying component; the recording component is used to record the sound made by the baby, and when the sound made by the baby is small, the amplifying component can amplify the sound made by the baby, so that the recording component can clearly record.

The audio power amplifier LM386 is used as the sound amplifier. The recording component in the sound recording module is the microphone M1. The first signal terminal of the microphone M1 is connected to the positive terminal of the power supply through the voltage dividing resistor R2, and the first signal terminal of the recording module is connected in series with filter capacitors. C and the adjustable resistor R1 are grounded, and the second signal end of the microphone M1 is connected to the signal pin GND (ie the 10th pin) of the microprocessor and then grounded; the adjustable end of the adjustable resistor is connected to the signal of the audio power amplifier LM386 The input pin IN+ (pin 3), the signal output pin VOUT of the audio power amplifier LM386 is connected in series with the first filter capacitor C6 to a signal input pin PA.7 of the STM32F103ZET6 microcontroller, and the signal output of the audio power amplifier LM386 The pin VOUT is connected in series with a second filter capacitor C7 and a current limiting resistor R6 and then grounded. In this embodiment, the maximum resistance of the adjustable resistance is 10K;

The capacitor C connected in series between the recording component and the adjustable resistor is used to filter out the noise in the sound signal;

The capacitor C6 connected in series with the signal output pin VOUT of the audio power amplifier LM386 is used to filter the output sound signal and isolate the DC signal.

The signal output pin VOUT of the audio power amplifier LM386 is connected in series with a capacitor C7 and a resistor R1, and the capacitor C7 and the resistor R1 in the circuit connected to the ground are used to filter out high-frequency signals in the sound.

A 10uF capacitor is connected in series between the two GAIN pins of the audio power amplifier LM386.

It also includes a power supply circuit and a music player circuit. The power supply circuit provides power for the recording amplifier module, the body temperature detection module, the microprocessor, the music player and the NB-IoT network unit; the music player circuit is connected to the microprocessor, and the user moves The communication terminal issues commands for playing music and selection, which are transmitted to the microprocessor through the NB-IoT network unit, and the microprocessor controls the playback of the music player and the selection of music.

The pin Vdd of the non-contact temperature sensor MLX90614 is the power supply pin, which is connected to the power supply VCC of 3-5.5V; Vss is connected to the ground bus GND; SCL is the clock line of the IIC bus, and the frequency of SCL is 10KHz-100KHz, connected to STM32F103ZGT6 The pin PB.6 of the microcontroller, SDA is the data line of the IIC bus, connected to the pin PB.7 of the STM32F103ZET6 microcontroller, these two pins are connected in series with a 10K pull-up resistor, and the two pull-up resistors are connected in parallel with the power supply VCC ; Keep the pin at a high level during initialization, the coupling capacitor of the power supply VCC is a 100nF ceramic chip capacitor C11, one end of the capacitor is connected to the pin Vss, and the other end is connected to the pin Vdd; the non-contact infrared temperature sensor MLX90614 can use infrared to monitor the baby's body temperature in real time. When the monitored baby's body temperature is higher or lower than the baby's normal body temperature range, the microprocessor module will send alarm information and vibration to the mobile terminal, so that the guardian can always keep track of the baby's body temperature. Physical condition and timely detection of the baby's discomfort so that treatment can be carried out quickly.

The GAIN pin of the audio power amplifier LM386 is the gain setting. A capacitor C8 can be connected in series between the GAIN1 pin and the GAIN8 pin to change the set gain of GAIN and reduce noise interference; it can also be connected between the GAIN1 pin and the GAIN8 pin. The capacitor C8 is not connected in series, and only a fixed gain is set; IN- and IN+ are the reverse input and forward input pins respectively, and are respectively connected to the bus GND, and connected to the negative terminal of the power supply. Audio input/output, because the "+" and "-" output terminals of dual audio input/output can cancel the common mode signal well and effectively suppress common mode noise; the VCC terminal is connected to the 5V power supply voltage; the BYPS pin is connected to an external bypass capacitor C9 After the circuit is stable, the voltage value of this pin is about half of the 5V power supply voltage connected to the pin VCC; capacitor C9 can slow down the rise and fall speed of the DC reference voltage, effectively inhibiting Noise, the noise when the device is powered on and powered off is caused by the instantaneous jump of the bias voltage, so the capacitor C9 is essential.

The VOUT pin of the STM32F103ZET6 microcontroller sends the sound of the baby detected by the audio power amplifier to the microprocessor, and the microprocessor compares and analyzes the received sound of the baby with the pre-recorded cry of the baby. If they are consistent, the processor sends an alarm instruction and sends the baby crying information to the mobile communication terminal through the NB-IoT network unit. Caregivers can timely understand, soothe or treat the baby.

The GAIN pin of the audio power amplifier LM386 is the gain setting. A capacitor C8 can be connected in series between the GAIN1 pin and the GAIN8 pin to change the set gain of GAIN and reduce noise interference; it can also be connected between the GAIN1 pin and the GAIN8 pin. The capacitor C8 is not connected in series, and only a fixed gain is set; IN- and IN+ are the reverse input and forward input pins respectively, and are respectively connected to the bus GND, and connected to the negative terminal of the power supply. Audio input/output, because the "+" and "-" output terminals of dual audio input/output can cancel the common mode signal well and effectively suppress common mode noise; the VCC terminal is connected to the 5V power supply voltage; the BYPS pin is connected to an external bypass capacitor C9 After the circuit is stable, the voltage value of this pin is about half of the 5V power supply voltage connected to the pin VCC; capacitor C9 can slow down the rise and fall speed of the DC reference voltage, effectively inhibiting Noise, the noise when the device is powered on and powered off is caused by the instantaneous jump of the bias voltage, so the capacitor C9 is essential.

The VOUT pin is the analog signal output terminal, which is connected to the I/O port (PA.7) of the STM32F103ZET6 microcontroller; the VOUT pin sends the sound of the baby detected by the audio power amplifier to the microprocessor, which will receive The sound of the received baby is analyzed and compared with the pre-recorded baby's cry. If the sound is consistent, the processor sends an alarm command and sends the baby's cry information to the mobile communication terminal through the NB-IoT network unit. The communication terminal receives the instruction, alarms and displays the baby's crying information, and reminds the caregiver of the baby's condition, so that the caregiver can timely understand, comfort or treat the baby.

The beneficial effects of the invention are: the crib has low production cost, good monitoring effect, and can timely feedback the relevant information of the baby, which is convenient for the user to respond in time, and is beneficial to the healthy growth of the baby.

The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection of the present invention. within the range.

Claims (8)

1. an intelligent crib based on NB-IoT network is characterized in that: comprising: recording amplifying module, body temperature detection module, NB-IoT network unit and microprocessor; wherein, Recording and amplifying module: used to detect whether the baby makes a sound in real time; Body temperature detection module: used to detect the baby's body temperature in real time; Microprocessor: used to compare the sound of the baby sent by the sound recording module and the body temperature of the baby sent by the body temperature detection module with the cry of the baby and the normal temperature range of the baby pre-recorded in the microprocessor. In contrast, if the sound of the baby's cry detected by the audio recording module or the body temperature of the baby detected by the body temperature detection module is not within the normal body temperature range, the baby's cry and the baby's body temperature are converted into the NB-IoT network. Baby information that the unit can receive and transmit; NB-IoT network unit: used to receive the baby information sent by the microprocessor and transmit it to the mobile communication terminal; Mobile communication terminal: used to receive and display the baby-related information transmitted by the NB-IoT network unit and give an alarm. The body temperature detection module, the recording and amplifying module and the NB-IoT network unit are respectively connected with the microprocessor; The two pins of the body temperature detection module are respectively connected to the two pins of the microprocessor, and the two pins of the body temperature detection module are respectively connected to the positive terminal of the power supply through a pull-up resistor. 2. a kind of intelligent crib based on NB-IoT network as claimed in claim 1, it is characterized in that: described sound recording amplifying module comprises recording assembly and amplifying assembly; When the baby's voice is small, the amplification unit can amplify the baby's voice so that the recording unit can record it clearly. 3. a kind of intelligent crib based on NB-IoT network as claimed in claim 2, is characterized in that: described amplifying assembly selects audio frequency power amplifier LM386 for use, and the first signal end of the recording assembly in the recording amplifying module passes through. The voltage dividing resistor is connected to the positive terminal of the power supply, while the first signal end of the recording component is connected in series with a filter capacitor and an adjustable resistor and then grounded, and the second signal end of the recording component is connected to a signal pin of the microprocessor and then grounded. 4. a kind of intelligent crib based on NB-IoT network as claimed in claim 1, is characterized in that: also comprises music player, and music player comprises loudspeaker; The mobile communication terminal controls the music player to play music to soothe the baby; the mobile communication terminal can control the switch of the music player and the selection of music tracks; the mobile communication terminal associates the smart crib based on the NB-IoT network by downloading the relevant APP. 5. The intelligent crib based on NB-IoT network according to claim 1, wherein the body temperature detection module is a non-contact infrared temperature sensor, which scans the baby's forehead by infrared rays to monitor the baby's body temperature in time. 6. a kind of intelligent crib based on NB-IoT network as claimed in claim 1, it is characterized in that: described microprocessor will receive the sound that the sound that the baby makes by the sound recording amplifying module sends and the body temperature detection module send. When the baby's body temperature is compared with the pre-recorded baby's cry and the baby's normal body temperature range, if the processed result is that the sound of the baby's cry detected by the recording amplifier module is not the baby's cry or the body temperature of the baby detected by the body temperature detection module is within Within the normal body temperature range, the microprocessor does not perform conversion and transmission processing, that is, the microprocessor does not convert the sound of the baby sent by the sound recording module and the body temperature of the baby sent by the body temperature detection module into NB-IoT The baby information that the network unit can receive and transmit is not sent to the mobile communication terminal through the NB-IoT network unit. 7. The smart crib based on NB-IoT network as claimed in claim 1, wherein the NB-IoT network unit can transmit information of the baby in a networkless environment. 8. A kind of intelligent crib based on NB-IoT network as claimed in claim 1, is characterized in that: also comprises a power supply unit, and the power supply unit comprises a rechargeable battery with a USB interface; The power supply unit is a recording and amplifying module , body temperature detection module, music player, microprocessor and NB-IoT network unit to provide power.