CN110867049A - A system and method for preventing infants from turning over and suffocating - Google Patents

Abstract

The present invention designs a system and method for preventing an infant from turning over and suffocating. The system includes an SOS signal generator and an SOS signal receiver. The SOS signal generator includes: a casing, a slave controller, a strain gauge circuit connected with the slave controller, a slave wireless transmitting circuit, a slave wireless receiving circuit, and a slave power supply circuit. The SOS signal receiver includes: a main controller and a reminding user circuit, a user feedback circuit, a main wireless transmitting circuit, a main wireless receiving circuit and a main power supply circuit connected with the main controller. The SOS signal generator is placed under the baby. When the baby turns over and compresses the shell to deform, the resistance of the strain gauge attached to the shell changes accordingly. After the controller detects the change, it sends a wireless signal from the wireless transmission circuit to the SOS signal for reception. The main controller receives the corresponding signal through the main wireless receiving circuit, and controls the user reminder circuit to remind the baby guardian. The invention solves the problem that the baby cannot be found in time when turning over.

Description

A system and method for preventing infants from turning over and suffocating

technical field

The present invention relates to a system and method for preventing infants from turning over and suffocating, in particular to an intelligent monitoring system and method for enabling infant guardians to timely discover that infants are turning over or kicking the quilt.

Background technique

Sleeping position affects breathing, and the baby's head is relatively soft, a good sleeping position is conducive to the development of the head.

The best sleeping position for babies is to lie on their backs or on their sides to avoid compressing the chest and lungs. Doctors recommend sleeping on their sides after feeding to avoid suffocation caused by overflowing milk or choking. However, many parents are worried that babies sleeping on their sides will turn over accidentally prone.

Try not to lie on your stomach before 3 months, because the bones of the baby before 3 months are soft, the strength is not enough, they will not turn over, and they cannot adjust their sleeping position by themselves. The baby will roll over slowly after 3 months, but cannot roll back to the supine position after rolling over.

The baby sleeps on his stomach for a long time, the bed is too soft and easy to bury the baby's mouth and nose and cause suffocation. 83% of the sudden deaths of babies are related to sleeping on the stomach. A bed that is too hard can push up against the baby's jawbone, flattening the baby's jaw, or appearing "over the top". If the baby sleeps on his tummy for a long time, and the parents do not let the baby adjust the sleeping position in time, the consequences will be disastrous.

After 6 months of infants, there is a high incidence of colds, because the immune system is not fully developed at this time, and a high fever may occur when a cold is caught. When sleeping, the quilt is covered too much or it is easy to cause a fever. If the baby kicks the quilt, the parents fall asleep. If you don't know it, you might catch a cold. Older babies usually roll over frequently during sleep, and may roll over and get out of bed.

Similar inventions made by the inventor before: a method for an intelligent infant monitoring system, a method for an intelligent infant monitoring system, and a method for a microwave intelligent monitoring system have problems such as poor monitoring effect and insufficient sensitivity. The present invention is greatly improved on the basis of the previous invention.

SUMMARY OF THE INVENTION

In view of this, the present invention provides a solution for preventing the baby from turning over and suffocating, so as to solve the problem of injury to the baby caused by the baby turning over or kicking the quilt when the baby's guardian is not paying attention.

To achieve the above object, the present invention provides the following technical solutions:

A system and method for preventing infants from turning over and suffocating, characterized in that the system comprises an SOS signal generator and an SOS signal receiver;

The SOS signal generator includes: a casing, a slave controller, a strain gauge circuit connected to the slave controller, a slave wireless transmitting circuit, a slave wireless receiving circuit, and a slave power supply circuit, and the slave power supply circuit is each part of the circuit in the SOS signal generator. powered by;

The SOS signal receiver includes: a main controller and a reminding user circuit, a user feedback circuit, a main wireless transmitting circuit, a main wireless receiving circuit, and a main power supply circuit connected to the main controller. The main power supply circuit is each of the SOS signal receivers. Part of the circuit power supply;

The SOS signal generator and the SOS signal receiver are devices that can be carried by the human body, which is convenient for reminding the baby's guardian. The SOS signal generator is a special device, and the SOS signal receiver can be a special device, such as a smart watch, a smart bracelet or a smart hand. Circles, etc., can also be general-purpose devices, such as mobile phones, tablet computers, etc.;

The slave controller and the master controller are integrated circuit chips, including single-chip microcomputer, DSP, ARM chip or special-purpose chip, etc.;

The strain gauge circuit includes resistance strain gauges, semiconductor strain gauges, optical strain gauges, etc. The strain gauge principle: using the physical and geometric characteristics of the conductor, when a conductor is stretched by an external force within its elastic limit, it will not be stretched. It will become narrower and longer due to breaking or permanent deformation. This deformation causes its terminal resistance to increase. On the contrary, when a conductor is compressed, it will become wider and shorter, and this deformation will lead to its terminal resistance becoming smaller. By measuring the resistance of the strain gauge, its strain can be calculated. The strain gauge is tightly fixed on the casing of the SOS signal generator. When the casing of the SOS signal generator is deformed, the force of the strain gauge changes, and the strain gauge deforms accordingly, so that the resistance of the strain gauge changes;

The slave power supply circuit and the main power supply circuit are voltage conversion circuits, including AC/DC conversion circuits or DC/DC conversion circuits;

The reminding user circuit includes an image display circuit, a motor circuit, and a speaker circuit. The image display circuit emits an alarm image to remind the baby guardian, the speaker circuit emits an alarm sound to remind the baby guardian, and the motor circuit emits an alarm vibration to remind the baby guardian;

The user feedback circuit is a human-computer interaction function circuit between the baby's guardian and the SOS signal receiver. The guardian acts as a user feedback circuit, indicating that the baby guardian has received the alarm reminder from the SOS signal receiver;

The master wireless transmission circuit and the slave wireless transmission circuit include a radio modulation circuit and an antenna;

The master wireless receiving circuit and the slave wireless receiving circuit include a radio demodulation circuit and an antenna;

The system and method for preventing the baby from turning over and suffocating, the method comprises the following steps:

Step 1: Place the SOS signal generator under or beside the baby who needs to be monitored. When the baby turns over or moves, the SOS signal generator is pressed and the casing of the SOS signal generator is deformed;

Step 2: The strain gauge circuit includes strain gauges, which are tightly fixed and attached to the casing of the SOS signal generator. When the casing of the SOS signal generator is deformed, the force of the strain gauge changes, and the strain gauge deforms accordingly, making the The resistance of the strain gauge changes;

Step 3: When the resistance of the strain gauge changes, the monitoring signal transmitted by the strain gauge circuit to the slave controller changes;

Step 4: The slave controller judges the monitoring signal transmitted by the strain gage circuit. When the monitoring signal transmitted by the strain gage circuit reaches the warning value preset by the slave controller, the slave controller repeatedly sends the SOS signal to the slave wireless transmitter at regular intervals. circuit;

Step 5: Modulate and convert the SOS signal sent from the controller into a radio signal from the wireless transmission circuit and transmit it to the SOS signal receiver;

Step 6: The main wireless receiving circuit of the SOS signal receiver receives the radio signal, and demodulates and converts to obtain the SOS signal;

Step 7: After the main wireless receiving circuit transmits the SOS signal to the main controller, the main controller sends a reminder signal to the reminding user circuit;

Step 8: The reminding user circuit includes an image display circuit, a motor circuit, and a speaker circuit. After the reminding user circuit receives the reminder signal sent by the main controller, the image display circuit sends out an alarm image to remind the baby guardian, and the speaker circuit emits an alarm sound to remind the baby guardian. The motor circuit sends out an alarm and vibrates to remind the baby guardian;

Step 9: When the baby guardian receives the alarm image, alarm sound, and alarm vibration issued by the reminding user circuit of the SOS signal receiver, the baby guardian acts as the user feedback circuit, and the user feedback circuit transmits the user feedback signal to the main controller;

Step 10: After the main controller receives the user feedback signal transmitted by the user feedback circuit, the main controller stops sending a reminder signal to the reminding user circuit, and the main controller sends a release SOS signal to the main wireless transmission circuit;

Step 11: After reminding the user that the circuit has not received the reminder signal sent by the main controller, remind the user that the image display circuit included in the circuit stops sending out an alarm image, the horn circuit stops sending an alarm sound, and the motor circuit stops sending an alarm vibration;

Step 12: The main wireless transmitting circuit modulates and converts the release SOS signal sent by the main controller into a radio signal and transmits it to the SOS signal generator;

Step 13: The SOS signal generator receives the radio signal from the wireless receiving circuit, and demodulates and converts to obtain the release SOS signal;

Step 14: After the slave wireless receiving circuit transmits the release SOS signal to the slave controller, the slave controller stops repeatedly sending the SOS signal to the slave wireless transmitting circuit.

The system and method for preventing the baby from turning over and suffocating provided by the present invention can detect the baby turning over or kick off the quilt in time, remind the baby's guardian to pay attention to the dangerous situation in time, and avoid the harm to the baby.

Description of drawings

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

1 is a schematic diagram of the system structure of a system and method for preventing an infant from turning over and suffocating according to Embodiment 1 of the present invention;

2 is a flow chart of the operation steps of a system and method for preventing an infant from turning over and suffocating provided by Embodiment 1 of the present invention;

3 is a schematic diagram of the system structure of a system and method for preventing an infant from turning over and suffocating according to Embodiment 2 of the present invention;

4 is a flow chart of the operation steps of a system and method for preventing an infant from turning over and suffocating provided by Embodiment 2 of the present invention;

5 is a schematic diagram of the system structure of a system and method for preventing an infant from turning over and suffocating according to Embodiment 3 of the present invention;

6 is a flow chart of the operation steps of a system and method for preventing an infant from turning over and suffocating according to Embodiment 3 of the present invention.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

This embodiment 1 provides a system and method for preventing an infant from turning over and suffocating, and a schematic structural diagram of the system is shown in FIG. 1 . The system includes an SOS signal generator 1 and an SOS signal receiver 2 .

The SOS signal generator 1 includes: a housing 101, a slave controller 103, a strain gauge circuit 102 connected to the slave controller 103, a slave wireless transmitting circuit 106, a slave wireless receiving circuit 105, a slave power supply circuit 104, and the slave power supply circuit 104 is the SOS Each part of the circuit in the signal generator 1 is powered.

The SOS signal receiver 2 includes: a main controller 203 and a user reminder circuit 201 connected to the main controller 203, a user feedback circuit 202, a main wireless transmitting circuit 206, a main wireless receiving circuit 205, a main power supply circuit 204, and a main power supply circuit 204 Supply power to each part of the circuit in the SOS signal receiver 2.

The SOS signal generator 1 and the SOS signal receiver 2 described in this embodiment 1 are devices that can be carried around by the human body, which is convenient for reminding the guardian of the baby. The SOS signal generator 1 is a special device, and the SOS signal receiver 2 can be a special device, such as a smart Watches, smart bracelets, or smart bracelets, etc., can also be general-purpose devices, such as mobile phones, tablet computers, and the like.

The slave controller 103 and the master controller 203 described in Embodiment 1 are 8051 single-chip integrated circuit chips.

The strain gauge circuit described in Embodiment 1 includes a resistance strain gauge. The working principle of the resistance strain gauge is based on the corresponding change in the resistance value of the conductor or semiconductor material when mechanical deformation occurs under the action of external force. By measuring the resistance of the resistance strain gauge, the strain in the area covered by it can be calculated. The resistance strain gauge is tightly fixed on the casing 101 of the SOS signal generator 1 described in this embodiment 1. When the casing 101 of the SOS signal generator 1 is deformed, the resistance strain gauge is deformed accordingly, making the resistance of the resistance strain gauge change.

The slave power supply circuit 104 described in this embodiment 1 includes a battery and a DC/DC conversion circuit, the battery is a 3VDC button battery, and the DC/DC conversion circuit converts the direct current of the 3VDC button battery into the strain gauge circuit 102, the slave controller 103, the slave wireless 3.3VDC required by the receiving circuit 105 and 12VDC required by the wireless transmitting circuit 106 .

The user reminder circuit 201 described in this embodiment 1 includes an image display circuit, a motor circuit, and a speaker circuit. The image display circuit is a 1.14-inch TFT liquid crystal display screen, the motor circuit is a 4*8mm miniature vibration motor, and the speaker circuit is a miniature passive buzzer. horn. The image display circuit emits an alarm image to remind the baby guardian, the horn circuit emits an alarm sound to remind the baby guardian, and the motor circuit emits an alarm vibration to remind the baby guardian. ;

The user feedback circuit 202 described in this embodiment 1 is a switch button, which is a human-computer interaction function circuit between the baby guardian and the SOS signal receiver 2 described in this embodiment 1. When the baby guardian receives the SOS signal described in this embodiment 1, the After the alarm image, alarm sound and alarm vibration issued by the reminding user circuit 201 of the receiver 2, the baby guardian presses the switch button to act as the user feedback circuit 202, indicating that the baby guardian has received the alarm reminder of the SOS signal receiver 2.

The main power supply circuit 204 described in this embodiment 1 includes a lithium battery, a lithium battery charge and discharge circuit, and a DC/DC conversion circuit. The lithium battery charge and discharge circuit uses a lithium battery power management chip to prevent overshoot and overdischarge of the lithium battery. DC/DC The conversion circuit converts the DC power of the lithium battery into the main controller 203 , the user reminder circuit 201 , the user feedback circuit 202 , the 3.3VDC required by the main wireless receiving circuit 205 and the 12VDC required by the main wireless transmitting circuit 206 .

The master wireless transmission circuit 206 and the slave wireless transmission circuit 106 described in this embodiment 1 include a radio modulation circuit and an antenna, and a 433MHz radio frequency wireless transmission circuit is selected.

The master wireless receiving circuit 205 and the slave wireless receiving circuit 105 described in this embodiment 1 include a radio demodulation circuit and an antenna, and a 433MHZ radio frequency wireless receiving circuit is selected.

A system and method for preventing an infant from turning over and suffocating provided by the present embodiment 1, the flow chart of the operation steps of the method is shown in FIG. 2 , including:

S101: Step 1: place the SOS signal generator 1 under or beside the baby to be monitored, when the baby turns over or moves, the SOS signal generator 1 is pressed, causing the casing 101 of the SOS signal generator 1 to deform;

S102: Step 2: The strain gauge circuit 102 includes a strain gauge, and the strain gauge is tightly fixed and attached to the casing 101 of the SOS signal generator 1. When the casing 101 of the SOS signal generator 1 is deformed, the strain gauge is deformed accordingly, and the strain The force of the strain gauge changes, so that the resistance of the strain gauge changes;

S103: Step 3: When the resistance of the strain gauge changes, the monitoring signal transmitted by the strain gauge circuit 102 to the slave controller 103 changes;

S104: Step 4: The controller 103 judges the monitoring signal transmitted by the strain gauge circuit 102, and when the monitoring signal transmitted by the strain gauge circuit 102 reaches the warning value preset by the controller 103, the controller 103 repeats it at regular intervals Send the SOS signal to the slave wireless transmitting circuit 106;

S105: Step 5: The wireless transmission circuit 106 modulates and converts the SOS signal sent from the controller 103 into a radio signal and transmits it to the SOS signal receiver 2;

S106: Step 6: the main wireless receiving circuit 205 of the SOS signal receiver 2 receives the radio signal, and demodulates and converts the SOS signal;

S107: Step 7: After the main wireless receiving circuit 205 transmits the SOS signal to the main controller 203, the main controller 203 sends a reminder signal to the reminding user circuit 201;

S108: Step 8: reminding the user that the circuit 201 includes an image display circuit, a motor circuit, and a speaker circuit. After the reminding circuit 201 receives the reminder signal sent by the main controller 203, the image display circuit sends out an alarm image to remind the baby guardian, and the speaker circuit sends out an alarm. The sound reminds the baby guardian, the motor circuit sends out an alarm and vibrates to remind the baby guardian;

S109: Step 9: When the baby guardian receives the alarm image, alarm sound, and alarm vibration issued by the reminding user circuit 201 of the SOS signal receiver 2, the baby guardian acts as the user feedback circuit 202, and the user feedback circuit 202 transmits the user feedback signal to the main control device 203;

S110: Step 10: After the main controller 203 receives the user feedback signal transmitted by the user feedback circuit 202, the main controller 203 stops sending a reminder signal to the reminding user circuit 201, and the main controller 203 sends a release SOS signal to the main wireless transmitting circuit 206 ;

S111: Step 11: After reminding the user that the circuit 201 has not received the reminder signal sent by the main controller 203, reminding the user that the image display circuit included in the circuit 201 stops sending out an alarm image, the speaker circuit stops sending an alarm sound, and the motor circuit stops sending an alarm vibration;

S112: Step 12: The main wireless transmission circuit 206 modulates and converts the release SOS signal sent by the main controller 203 into a radio signal and transmits it to the SOS signal generator 1;

S113: Step 13: The SOS signal generator 1 receives the radio signal from the wireless receiving circuit 105, and demodulates and converts to obtain the release SOS signal;

S114 : Step 14 : After the slave wireless receiving circuit 105 transmits the release SOS signal to the slave controller 103 , the slave controller 103 stops repeatedly sending the SOS signal to the slave wireless transmitting circuit 106 .

The system and method for preventing the baby from turning over and suffocating provided by the present embodiment 1 can detect the baby turning over or kick the quilt in time, and remind the baby's guardian to pay attention to the dangerous situation in time, so as to avoid harm to the baby.

The second embodiment provides a system and method for preventing an infant from turning over and suffocating, and a schematic structural diagram of the system is shown in FIG. 3 . The system includes an SOS signal generator 3 and a smartphone 4 .

The SOS signal generator 3 includes: a casing 301, a 2541 chip 303, a resistance strain gauge 302 connected to the 2541 chip 303, a Bluetooth transmitting circuit 306, a Bluetooth receiving circuit 305, and a battery circuit 304. The battery circuit 304 is each of the SOS signal generator 3. Some circuits are powered.

The smart phone 4 includes: a mobile phone main control 403 , a display screen circuit 401 connected to the mobile phone main control 403 , a touch screen circuit 402 , a Bluetooth transmitting circuit 406 , a Bluetooth receiving circuit 405 , and a lithium battery circuit 404 . The lithium battery circuit 404 is inside the smart phone 4 . Each part of the circuit power supply.

The SOS signal generator 3 described in this embodiment 2 is used as the SOS signal generator in the monitoring system of the present invention, and the SOS signal generator 3 is a device that can be carried around by the human body, which is convenient for reminding the guardian of the baby.

The smart phone 4 described in the second embodiment is used as the SOS signal receiver in the monitoring system of the present invention.

The 2541 chip 303 described in this embodiment 2 is used as the slave controller in the monitoring system of the present invention. The 2541 chip 303 is a low-power bluetooth chip CC2541 introduced by TI. The CC2541 integrates an RF transceiver and a standard enhanced 8051 MCU.

The resistance strain gauge 302 described in this embodiment 2 is used as the strain gauge circuit in the monitoring system of the present invention. The working principle of the resistance strain gauge 302 is based on the fact that when the conductor or semiconductor material is mechanically deformed under the action of external force, its resistance value correspondingly occurs. Variety. By measuring the resistance of the resistance strain gauge 302, the strain of the covered area can be calculated. The resistance strain gauge 302 is tightly fixed and attached to the casing 301 of the SOS signal generator 3 described in the second embodiment. When the casing 301 of the SOS signal generator 3 is deformed, the resistance strain gauge 302 is deformed accordingly, making the resistance strain gauge The resistance of 302 changes;

The battery circuit 304 described in Embodiment 2 is used as the slave power circuit in the monitoring system of the present invention. The battery circuit 304 includes a lithium battery and a DC/DC conversion circuit. The lithium battery is a 3VDC button battery. The DC/DC conversion circuit converts the 3VDC button battery into The direct current is converted into 3.3VDC required by other circuits in the SOS signal generator 3;

The mobile phone main control 403 described in Embodiment 2 is used as the main controller in the monitoring system of the present invention, and the mobile phone main control 403 is a chip using an ARM architecture solution.

The display screen circuit 401 described in Embodiment 2 is used as a reminder circuit in the monitoring system of the present invention, and the display screen circuit 401 is a liquid crystal display screen. The middle display area of the display screen circuit 401 displays an alarm image to alert the baby guardian.

The touch screen circuit 402 described in this embodiment 2 is used as a user feedback circuit in the monitoring system of the present invention. The touch screen circuit 402 is attached to the display screen circuit 401, and the touch screen circuit 402 is the person who is the guardian of the baby and the smart phone 4 described in this embodiment 2. When the baby guardian receives the alarm image displayed in the middle display area of the display screen circuit 401 of the smartphone 4 described in Embodiment 2, the baby guardian slides the touch screen circuit 402, indicating that the baby guardian has received the intelligent Alarm reminder of mobile phone 4;

The lithium battery circuit 404 described in Embodiment 2 is used as the main power supply circuit in the monitoring system of the present invention. The lithium battery circuit 404 includes a lithium battery, a lithium battery charging and discharging circuit, and a DC/DC conversion circuit. The lithium battery charging and discharging circuit uses a lithium battery power supply Management chip to prevent lithium battery overshoot and overdischarge, DC/DC conversion circuit converts lithium battery direct current into mobile phone main control 403, display circuit 401, touch screen circuit 402, bluetooth receiving circuit 405, bluetooth transmitting circuit 406 in smartphone 4 3.3VDC required.

The Bluetooth transmitting circuit 306 described in Embodiment 2 is used as the slave wireless transmitting circuit in the monitoring system of the present invention, and the Bluetooth transmitting circuit 306 adopts a PCB board antenna.

The Bluetooth transmitting circuit 406 described in Embodiment 2 is used as the main wireless transmitting circuit in the monitoring system of the present invention, and the Bluetooth transmitting circuit 406 adopts a PCB board antenna.

The Bluetooth receiving circuit 305 described in Embodiment 2 is used as the slave wireless receiving circuit in the monitoring system of the present invention, and the Bluetooth receiving circuit 305 adopts a PCB board antenna.

The Bluetooth receiving circuit 405 described in the second embodiment is used as the main wireless receiving circuit in the monitoring system of the present invention, and the Bluetooth receiving circuit 405 adopts a PCB board antenna.

A system and method for preventing an infant from turning over and suffocating provided by the second embodiment, the flow chart of the operation steps of the method is shown in FIG. 4 , including:

S201: Step 1: place the SOS signal generator 3 under or beside the baby to be monitored, when the baby turns over or moves, the SOS signal generator 3 is pressed, so that the casing 301 of the SOS signal generator 3 is deformed;

S202: Step 2: The resistance strain gauge 302 is tightly fixed and attached to the casing 301 of the SOS signal generator 3. When the casing 301 of the SOS signal generator 3 is deformed, the force of the resistance strain gauge 302 changes, and the resistance strain gauge 302 changes with the When the deformation occurs, the resistance of the resistance strain gauge 302 changes;

S203: Step 3: When the resistance of the resistance strain gauge 302 changes, the monitoring signal transmitted by the resistance strain gauge 302 to the 2541 chip 303 changes;

S204: Step 4: The 2541 chip 303 judges the monitoring signal transmitted by the resistance strain gauge 302. When the monitoring signal transmitted by the resistance strain gauge 302 reaches the warning value preset by the 2541 chip 303, the 2541 chip 303 repeatedly sends the SOS signal at regular intervals to the Bluetooth transmitting circuit 306;

S205: Step 5: The Bluetooth transmitting circuit 306 converts the SOS signal sent by the 2541 chip 303 into a radio signal and transmits it to the smartphone 4;

S206: Step 6: The Bluetooth receiving circuit 405 of the smartphone 4 receives the radio signal, and converts it to obtain the SOS signal;

S207: Step 7: After the Bluetooth receiving circuit 405 transmits the SOS signal to the mobile phone main control 403, the mobile phone main control 403 sends a reminder signal to the display screen circuit 401;

S208: Step 8: After the display screen circuit 401 receives the reminder signal sent by the mobile phone main control 403, the middle display area of the display screen circuit 401 displays an alarm image to remind the baby guardian;

S209: Step 9: After the baby guardian receives the alarm image displayed in the middle display area of the display circuit 401 of the smartphone 4, the baby guardian slides the touch screen circuit 402, indicating that the baby guardian has received the alarm reminder from the smartphone 4, and the baby guardian Acting on the touch screen circuit 402, the touch screen circuit 402 transmits the user feedback signal to the mobile phone main control 403;

S210: Step 10: After the mobile phone main control 403 receives the user feedback signal transmitted by the touch screen circuit 402, the mobile phone main control 403 stops sending a reminder signal to the display screen circuit 401, and the mobile phone main control 403 sends a release SOS signal to the Bluetooth transmission circuit 406;

S211: Step 11: After the display screen circuit 401 does not receive the reminder signal sent by the mobile phone main control 403, the display screen circuit 401 stops sending out the alarm image;

S212: Step 12: The Bluetooth transmitting circuit 406 converts the release SOS signal sent by the mobile phone main control 403 into a radio signal and transmits it to the SOS signal generator 1;

S213: Step 13: The Bluetooth receiving circuit 305 of the SOS signal generator 1 receives the radio signal, and converts it to obtain the release SOS signal;

S214: Step 14: After the Bluetooth receiving circuit 305 transmits the release SOS signal to the 2541 chip 303, the 2541 chip 303 stops repeatedly sending the SOS signal to the Bluetooth transmitting circuit 306.

The system and method for preventing the baby from turning over and suffocating provided by this embodiment 2 can detect the baby turning over or kick the quilt in time, and remind the baby's guardian to pay attention to the dangerous situation in time, so as to avoid harm to the baby.

The third embodiment provides a system and method for preventing an infant from turning over and suffocating, and a schematic structural diagram of the system is shown in FIG. 5 . The system includes an SOS signal generator 5 and a smart bracelet 6 .

The SOS signal generator 5 includes: a casing 501 and a 2541 chip 503 , a resistance strain gauge 502 connected to the 2541 chip 503 , a Bluetooth transmitting circuit 506 , a Bluetooth receiving circuit 505 , and a battery circuit 504 . Some circuits are powered.

The smart bracelet 6 includes: a 2541 chip 603, a motor circuit 601 connected to the 2541 chip 603, a gyroscope circuit 602, a Bluetooth transmitting circuit 606, a Bluetooth receiving circuit 605, and a lithium battery circuit 604. The lithium battery circuit 604 is inside the smart bracelet 6 Each part of the circuit power supply.

The SOS signal generator 5 described in Embodiment 3 is used as the SOS signal generator in the monitoring system of the present invention, and the SOS signal generator 5 is a device that can be carried around by the human body, which is convenient for reminding the guardian of the baby.

The smart bracelet 6 described in Embodiment 3 is used as the SOS signal receiver in the monitoring system of the present invention.

The 2541 chip 503 described in this embodiment 3 is used as the slave controller in the monitoring system of the present invention. The 2541 chip 503 is a low-power bluetooth chip CC2541 introduced by TI. The CC2541 integrates an RF transceiver and a standard enhanced 8051 MCU.

The resistance strain gauge 502 in this embodiment 3 is used as the strain gauge circuit in the monitoring system of the present invention. The working principle of the resistance strain gauge 502 is based on the fact that when the conductor or semiconductor material is mechanically deformed under the action of external force, its resistance value correspondingly occurs. Variety. By measuring the resistance of the resistance strain gauge 502, the strain of the covered area can be calculated. The resistance strain gauge 502 is tightly fixed and attached to the casing 501 of the SOS signal generator 5 described in Embodiment 3. When the casing 501 of the SOS signal generator 5 is deformed, the resistance strain gauge 502 is deformed accordingly, making the resistance strain gauge The resistance of 502 changes;

The battery circuit 504 described in Embodiment 3 is used as the slave power circuit in the monitoring system of the present invention. The battery circuit 504 includes a lithium battery and a DC/DC conversion circuit. The lithium battery is a 3VDC button battery, and the DC/DC conversion circuit converts the 3VDC button battery into The direct current is converted into 3.3VDC required by other circuits in the SOS signal generator 5;

The 2541 chip 603 described in this embodiment 3 serves as the main controller in the monitoring system of the present invention, and the 2541 chip 503 is a low-power bluetooth chip CC2541 introduced by TI. The CC2541 integrates an RF transceiver and a standard enhanced 8051 MCU.

The motor circuit 601 described in Embodiment 3 is used as a reminder circuit in the monitoring system of the present invention, and the motor circuit 601 is a 4*8mm micro vibration motor. The motor circuit 601 emits an alarm vibration to alert the baby guardian.

The gyroscope circuit 602 in this embodiment 3 is used as a user feedback circuit in the monitoring system of the present invention. The gyroscope circuit 602 is a human-computer interaction function circuit between the baby guardian and the smart bracelet 6 in this embodiment 3. The gyroscope circuit 602 Using MPU-6050 chip, MPU-6050 is an integrated 6-axis motion processing component, which can quickly sense angular velocity and acceleration. When the baby guardian receives the alarm vibration reminder issued by the motor circuit 601 of the smart bracelet 6 described in this embodiment 3 Then, the baby guardian shakes the smart bracelet 6, and the angular velocity and acceleration sensed by the gyroscope circuit 602 of the smart bracelet 6 change accordingly, indicating that the baby guardian has received the alarm vibration reminder of the smart bracelet 6;

The lithium battery circuit 604 described in Embodiment 3 is used as the main power supply circuit in the monitoring system of the present invention. The lithium battery circuit 604 includes a lithium battery, a lithium battery charging and discharging circuit, and a DC/DC conversion circuit. The lithium battery charging and discharging circuit uses a lithium battery power supply Management chip to prevent lithium battery overshoot and overdischarge, DC/DC conversion circuit converts lithium battery direct current into motor circuit 601, gyroscope circuit 602, 2541 chip 603, Bluetooth transmitter circuit 606, Bluetooth receiver circuit 605 in smart bracelet 6 3.3VDC required.

The Bluetooth transmitting circuit 506 described in Embodiment 3 is used as the slave wireless transmitting circuit in the monitoring system of the present invention, and the Bluetooth transmitting circuit 506 adopts a PCB board antenna.

The Bluetooth transmitting circuit 606 described in the third embodiment is used as the main wireless transmitting circuit in the monitoring system of the present invention, and the Bluetooth transmitting circuit 606 adopts a PCB board antenna.

The Bluetooth receiving circuit 505 described in Embodiment 3 is used as the slave wireless receiving circuit in the monitoring system of the present invention, and the Bluetooth receiving circuit 505 adopts a PCB board antenna.

The Bluetooth receiving circuit 605 described in Embodiment 3 is used as the main wireless receiving circuit in the monitoring system of the present invention, and the Bluetooth receiving circuit 605 adopts a PCB board antenna.

A system and method for preventing infants from turning over and suffocating provided in this embodiment 3, the flow chart of the operation steps of the method is shown in Figure 6, including:

S301: Step 1: place the SOS signal generator 5 under or beside the baby to be monitored, when the baby turns over or moves, the SOS signal generator 5 is pressed, so that the casing 501 of the SOS signal generator 5 is deformed;

S302: Step 2: The resistance strain gauge 502 is tightly fixed and attached to the casing 501 of the SOS signal generator 5. When the casing 501 of the SOS signal generator 5 is deformed, the force of the resistance strain gauge 502 changes, and the resistance strain gauge 502 changes with the When the deformation occurs, the resistance of the resistance strain gauge 502 changes;

S303: Step 3: When the resistance of the resistance strain gauge 502 changes, the monitoring signal transmitted by the resistance strain gauge 502 to the 2541 chip 503 changes;

S304: Step 4: The 2541 chip 503 judges the monitoring signal transmitted by the resistance strain gauge 502. When the monitoring signal transmitted by the resistance strain gauge 502 reaches the warning value preset by the 2541 chip 503, the 2541 chip 503 repeatedly sends the SOS signal at regular intervals to the Bluetooth transmitting circuit 506;

S305: Step 5: The Bluetooth transmitting circuit 506 converts the SOS signal sent by the 2541 chip 503 into a radio signal and transmits it to the smart bracelet 6;

S306: Step 6: The Bluetooth receiving circuit 605 of the smart bracelet 6 receives the radio signal, and converts it to obtain the SOS signal;

S307: Step 7: After the Bluetooth receiving circuit 605 transmits the SOS signal to the 2541 chip 603, the 2541 chip 603 sends a reminder signal to the motor circuit 601;

S308: Step 8: After the motor circuit 601 receives the reminder signal sent by the 2541 chip 603, the motor circuit 601 sends out an alarm vibration to remind the baby guardian;

S309: Step 9: When the baby guardian receives the alarm vibration reminder from the motor circuit 601 of the smart bracelet 6, the baby guardian shakes the smart bracelet 6, and the angular velocity and acceleration sensed by the gyroscope circuit 602 of the smart bracelet 6 occur. Corresponding changes, indicating that the baby guardian has received the alarm vibration reminder of the smart bracelet 6, the baby guardian acts on the gyroscope circuit 602, and the gyroscope circuit 602 transmits the user feedback signal to the 2541 chip 603;

S310: Step 10: After the 2541 chip 603 receives the user feedback signal transmitted by the gyroscope circuit 602, the 2541 chip 603 stops sending a reminder signal to the motor circuit 601, and the 2541 chip 603 sends a release SOS signal to the Bluetooth transmitting circuit 606;

S311: Step 11: After the motor circuit 601 does not receive the reminder signal sent by the 2541 chip 603, the motor circuit 601 stops sending out alarm vibration;

S312: Step 12: The Bluetooth transmitting circuit 606 converts the release SOS signal sent by the 2541 chip 603 into a radio signal and transmits it to the SOS signal generator 1;

S313: Step 13: The Bluetooth receiving circuit 505 of the SOS signal generator 1 receives the radio signal, and converts it to obtain the release SOS signal;

S314: Step 14: After the Bluetooth receiving circuit 505 transmits the release SOS signal to the 2541 chip 503, the 2541 chip 503 stops repeatedly sending the SOS signal to the Bluetooth transmitting circuit 506.

The system and method for preventing the baby from turning over and suffocating provided by this embodiment 3 can detect the baby turning over or kick the quilt in time, and remind the baby's guardian to pay attention to the dangerous situation in time to avoid harm to the baby.

The above description of the disclosed embodiments enables any person skilled in the art to make or use the present invention.

Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (1)

1. A system and method for preventing baby from turning over and suffocating is characterized in that the system comprises an SOS signal generator and an SOS signal receiver;

the SOS signal generator includes: the device comprises a shell, a slave controller, a strain gauge circuit, a slave wireless transmitting circuit, a slave wireless receiving circuit and a slave power circuit, wherein the strain gauge circuit, the slave wireless transmitting circuit, the slave wireless receiving circuit and the slave power circuit are connected with the slave controller;

the SOS signal receiver includes: the system comprises a main controller, and a user reminding circuit, a user feedback circuit, a main wireless transmitting circuit, a main wireless receiving circuit and a main power circuit which are connected with the main controller, wherein the main power circuit supplies power to all circuits in an SOS signal receiver;

the SOS signal generator and the SOS signal receiver are devices which can be carried by a human body, so that the baby guardian can be reminded conveniently;

the slave controller and the master controller are integrated circuit chips;

the strain gauge circuit comprises a strain gauge, the strain gauge is tightly and fixedly attached to the housing of the SOS signal generator, and when the housing of the SOS signal generator deforms, the stress of the strain gauge changes, and the strain gauge deforms accordingly, so that the resistance of the strain gauge changes;

the slave power supply circuit and the master power supply circuit are voltage conversion circuits;

the reminding user circuit comprises an image display circuit, a motor circuit and a horn circuit, wherein the image display circuit sends out an alarm image to remind a baby guardian, the horn circuit sends out an alarm sound to remind the baby guardian, and the motor circuit sends out alarm vibration to remind the baby guardian;

the user feedback circuit is a man-machine interaction function circuit of the infant guardian and the SOS signal receiver, and when the infant guardian receives an alarm image, an alarm sound and an alarm vibration which are sent by a reminding user circuit of the SOS signal receiver, the infant guardian acts on the user feedback circuit to indicate that the infant guardian has received the alarm reminding of the SOS signal receiver;

the master wireless transmitting circuit and the slave wireless transmitting circuit comprise a radio modulation circuit and an antenna;

the master wireless receiving circuit and the slave wireless receiving circuit comprise wireless demodulation circuits and antennas;

a system and method for preventing asphyxiation of an infant during turning over, the method comprising the steps of:

step 1: the SOS signal generator is placed below or beside an infant to be monitored, and when the infant turns over or acts, the SOS signal generator is pressed, so that the shell of the SOS signal generator deforms;

step 2: the strain gauge circuit comprises a strain gauge, the strain gauge is tightly and fixedly attached to a shell of the SOS signal generator, and when the shell of the SOS signal generator deforms, the stress of the strain gauge changes, and the strain gauge deforms along with the stress of the strain gauge, so that the resistance of the strain gauge changes;

and step 3: when the resistance of the strain gauge changes, the monitoring signal transmitted to the slave controller by the strain gauge circuit changes;

and 4, step 4: the slave controller judges the monitoring signal transmitted by the strain gauge circuit, and when the monitoring signal transmitted by the strain gauge circuit reaches a warning value preset by the slave controller, the slave controller repeatedly transmits an SOS signal to the slave wireless transmitting circuit at intervals;

and 5: modulating and converting the SOS signal sent from the controller into a radio signal from a wireless transmitting circuit and transmitting the radio signal to an SOS signal receiver;

step 6: a main wireless receiving circuit of the SOS signal receiver receives the radio signal, and the radio signal is demodulated and converted to obtain an SOS signal;

and 7: after the main wireless receiving circuit transmits the SOS signal to the main controller, the main controller sends a reminding signal to a circuit for reminding a user;

and 8: the reminding user circuit comprises an image display circuit, a motor circuit and a loudspeaker circuit, after the reminding user circuit receives a reminding signal sent by the main controller, the image display circuit sends an alarm image to remind a baby guardian, the loudspeaker circuit sends an alarm sound to remind the baby guardian, and the motor circuit sends an alarm vibration to remind the baby guardian;

and step 9: when the infant guardian receives an alarm image, an alarm sound and an alarm vibration which are sent by the user circuit and used for reminding the user circuit of the SOS signal receiver, the infant guardian acts on the user feedback circuit, and the user feedback circuit transmits a user feedback signal to the main controller;

step 10: after the main controller receives a user feedback signal transmitted by the user feedback circuit, the main controller stops sending a reminding signal to remind the user circuit, and sends an SOS releasing signal to the main wireless transmitting circuit;

step 11: after the user circuit is reminded of not receiving the reminding signal sent by the main controller, the image display circuit stops sending alarm images, the horn circuit stops sending alarm sounds, and the motor circuit stops sending alarm vibration;

step 12: the main wireless transmitting circuit modulates and converts the SOS releasing signal sent by the main controller into a radio signal and transmits the radio signal to the SOS signal generator;

step 13: the SOS signal generator receives the radio signal from the wireless receiving circuit, and demodulates and converts the radio signal to obtain a SOS release signal;

step 14: after the SOS release signal is transmitted from the wireless receiving circuit to the slave controller, the slave controller stops repeatedly transmitting the SOS signal to the slave wireless transmitting circuit.

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