Intelligent lock collaborative baby carriage monitoring system and baby carriage

Abstract

The invention discloses an intelligent lock collaborative baby carriage monitoring system and a baby carriage, and relates to the technical field of intelligent sensors, the intelligent lock collaborative baby carriage monitoring system comprises a monitoring module, a baby protection module, a baby state monitoring module, an electric power-assisted driving module and a speed monitoring and adjusting module, the monitoring module realizes authorized personnel identification and baby state image acquisition; the protection module monitors the baby carriage and the baby in a double-line mode, tracks the approaching person and controls a protection bandage. The state monitoring module monitors the baby state based on the image data; the electric power assisting module provides pushing assisting power according to road information; the speed module adjusts the pushing speed in real time, the baby carriage comprises a frame, a cradle and the like, the canopy is provided with the monitoring module, the cradle is provided with an air hole, a foldable main clamping base, a magnetic attraction auxiliary clamping base and a buckle mechanism, and safety protection is achieved through cooperation of electromagnetic control and a mechanical structure.

Description

Technical Field

[0001] This invention relates to intelligent sensor technology, specifically to an intelligent lock-assisted stroller monitoring system and a stroller. Background Technology

[0002] It is widely acknowledged that in today's fast-paced life, parents' demands for the safety and convenience of their babies during outings and at home have increased dramatically. Traditional strollers can only meet basic transportation needs and are inadequate in the face of complex environments and diverse childcare scenarios. With the rapid development of technology, technologies such as advanced sensing, AI algorithms, and high-precision positioning and communication have matured, providing strong support for the intelligent upgrade of strollers. Against this backdrop, the "Baby's Safety Escort" project—a multi-algorithm-based intelligent safety stroller—was launched, dedicated to using cutting-edge technology to comprehensively innovate the function and experience of strollers, safeguarding your baby's growth journey.

[0003] The shortcomings of existing technologies are: existing monitoring systems have a single monitoring dimension, relying solely on cameras, lacking dual-line monitoring of stroller status and infant status, as well as facial tracking and behavior analysis of personnel, making it difficult to detect potential security risks; they have not achieved intelligent identity recognition and hierarchical protection, and cannot distinguish between authorized and unauthorized personnel, nor can they link the monitoring system with the protective structure formed by the straps on the stroller, and the position of the straps used for infant protection is too fixed, making it inconvenient to adjust the position of the straps according to the different situations and growth stages of different infants. Summary of the Invention

[0004] The purpose of this invention is to provide an intelligent lock-assisted stroller monitoring system and stroller to address the aforementioned shortcomings in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: including:

[0006] Monitoring module: It records and identifies authorized personnel for strollers and provides image data to identify the baby's status;

[0007] Baby protection module: It monitors the stroller and baby on two lines, tracks and identifies the face of people approaching the stroller, monitors people’s behavior towards the stroller, transmits and processes the behavior information in real time, and performs electrical control in conjunction with the baby protection straps.

[0008] The infant status monitoring module monitors the infant's status based on the image data provided by the monitoring module;

[0009] The electric power assist module provides real-time assistance to the stroller based on road information while the stroller is being pushed, helping parents to push the stroller.

[0010] The speed monitoring and adjustment module adjusts the pushing speed of the stroller in real time while it is being pushed.

[0011] As a further description of the above technical solution: it includes: a stroller frame, a cradle, a handle, and a canopy, wherein a monitoring module is installed on the canopy, and also includes:

[0012] Ventilation holes are provided on the side panels on both sides of the cradle;

[0013] The main card holder is foldable and installed at the bottom of the cradle;

[0014] The two sets of secondary card holders are magnetically attached to both sides of the main card holder.

[0015] The buckle mechanism is connected to the main buckle seat and the auxiliary buckle seat. When the two sets of auxiliary buckle seats are separated from the main buckle seat, the two ends of the winding rod used for wrapping the strap in the main buckle seat are restricted, thus limiting the position of the main buckle seat. At the same time, when the two sets of auxiliary buckle seats are attached to both sides of the cradle, the auxiliary buckle seat passively drives the buckle mechanism to lock the auxiliary buckle seat to both sides of the cradle, and cooperates with the monitoring system in the monitoring module to limit the auxiliary buckle seat.

[0016] As a further description of the above technical solution: a folding groove is provided at one end of the bottom of the cradle. A main card seat and two sets of auxiliary card seats are detachably installed in the folding groove. A winding rod is rotatably installed in the main card seat and the two sets of auxiliary card seats through a torsion spring turntable. One end of the winding rod is covered with a strap. The other end of the strap in the main card seat passes through the strap outlet and is fixedly connected to the inner side wall of the folding groove. The other end of the strap in the auxiliary card seats passes through the strap outlet and is fixedly connected to both sides of the main card seat.

[0017] As a further description of the above technical solution: the outer periphery of the tape outlet on the inner side of the sub-card holder is provided with magnetic strips of opposite magnetic properties on both sides of the main card holder. The cavity inside the main card holder for rolling the strap has grooves at both ends corresponding to the positions of the torsion spring turntable. A slide frame is slidably connected in the groove. A friction ring is fixedly installed on the bottom inner side of the slide frame. The top two ends of the slide frame are connected to the inner side wall of the main card holder through return springs. A top rod is fixedly connected to the middle of the top of the slide frame and inserted into the outside of both sides of the main card holder, abutting against and connecting the two sets of sub-card holders.

[0018] As a further description of the above technical solution: friction plates are movably installed in the middle of the bottom of the two sets of sub-card seats, and an inner rod is fixedly connected to the back side of the friction plate. The inner rod slides through the outer side of the two sets of sub-card seats and slides into the rotating sleeve. The rotating sleeve is rotatably connected to the insertion rod. The insertion rod is fixedly installed on the surface of the sub-card seat.

[0019] As a further description of the above technical solution: the buckling mechanism includes an elastic ring rotatably connected to the middle of the insertion rod via a torsion spring bearing. A right-angled triangular cross-section abutting rod is symmetrically installed on the inner middle of the elastic ring. The abutting rod is slidably inserted into the insertion hole, which is correspondingly opened on the outer periphery of the rotating sleeve. The bottom end of the abutting rod passes through the insertion hole and is inserted into the rotating sleeve, slidingly abutting against the bottom end of the inner rod. The bottom end of the inner rod is connected to the rotating sleeve via a limiting spring.

[0020] As a further description of the above technical solution: a slide rail is symmetrically provided on one side of the inner rod of the rotating sleeve, and a sliding ball is slidably connected in the slide rail. The sliding ball is set at the bottom of one end of the clamping plate, and the other end of the clamping plate is rotatably connected to both sides of the insertion rod through a rotating shaft with a rotation function.

[0021] As a further description of the above technical solution: the initial position of the ball resting in the slide rail gradually deepens inward towards the end position, and the initial position of the slide rail extends inward, setting the slide rail into an inclined L-shape.

[0022] As a further description of the above technical solution: an electromagnet is provided inside the vent hole, which is magnetically connected to the elastic ring.

[0023] In the above technical solution, the intelligent lock-assisted stroller monitoring system and stroller provided by the present invention have the following beneficial effects:

[0024] 1. Dual-line monitoring and protection: Dual-line monitoring of the stroller and the baby, real-time tracking of the face of the person approaching the stroller, monitoring the person's behavior, and processing the behavior information in real time, combined with the straps for electrical control, providing all-round protection; Abnormal pushing monitoring and protection: Monitoring the stroller's pushing speed, if the speed is too fast, automatically slowing down and alarming to remind parents of possible abnormal situations; Smart lock collaborative protection: Automatically controlling the locking and unlocking of the straps and the locking and releasing of the wheels based on whether the stroller pusher is an authorized person, effectively preventing unauthorized personnel from pushing or taking away the baby.

[0025] 2. Stability of the buckle mechanism: The elastic ring and abutment rod, connected by a torsion spring bearing, achieve stable locking and unlocking between the secondary and primary card holders, ensuring effective protection of the baby with the strap. Carriage friction control: A friction ring is installed on the bottom inner side of the carriage, connected to the inner wall of the primary card holder via a return spring. The sliding of the carriage controls the contact between the friction ring and the roll bar, thereby adjusting the tightening and loosening of the strap, improving ease of operation and safety. Automatic adjustment and fixation: During the separation or engagement of the secondary and primary card holders, the carriage and friction ring automatically adjust their positions, limiting the friction of the roll bar to ensure the fixed length of the strap and the stability of the primary card holder position.

[0026] 3. Adjustment of the straps: The two sets of auxiliary brackets are set in a detachable structure between the cradle side panel, which allows the protective position of the straps to be adjusted at any time according to the actual situation of the baby. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0028] Figure 1 This is a schematic diagram of the overall system modules provided in an embodiment of the present invention;

[0029] Figure 2 A schematic diagram of the baby protection module provided in an embodiment of the present invention;

[0030] Figure 3 This is a schematic diagram of the overall structure of the stroller provided in an embodiment of the present invention;

[0031] Figure 4 This is a schematic diagram of the structure of a cradle provided in an embodiment of the present invention;

[0032] Figure 5 This is a schematic diagram of the main card holder and the secondary card holder within the folding groove provided in an embodiment of the present invention;

[0033] Figure 6 A schematic diagram of the main card holder and the secondary card holder being removed from the folding groove according to an embodiment of the present invention;

[0034] Figure 7 This is a schematic diagram illustrating the separation between the main card holder and the two sets of sub-card holders provided in an embodiment of the present invention.

[0035] Figure 8 This is a schematic diagram of the inner rotating sleeve of the insertion rod provided in an embodiment of the present invention;

[0036] Figure 9 This is a structural schematic diagram of the internal cross-section of the insertion rod provided in an embodiment of the present invention;

[0037] Figure 10 Provided for embodiments of the present invention Figure 9 Enlarged view of point A in the middle;

[0038] Figure 11 This is a schematic diagram of the slide rail opened on the outer periphery of the rotating sleeve according to an embodiment of the present invention;

[0039] Figure 12 This is a schematic diagram of the sub-card holder provided in an embodiment of the present invention;

[0040] Figure 13 This is a schematic diagram of the main card holder provided in an embodiment of the present invention;

[0041] Figure 14 This is a schematic diagram of the structure of the carriage provided in an embodiment of the present invention;

[0042] Figure 15 This is a schematic diagram of the structure inside the vent hole provided in an embodiment of the present invention.

[0043] Explanation of reference numerals in the attached figures:

[0044] 1-Frame; 2-Cradle; 3-Handle; 4-Rain canopy; 5-Monitoring module; 6-Ventilation hole; 7-Folding slot; 8-Main card seat; 9-Secondary card seat; 10-Insertion rod; 11-Strap; 12-Magnetic strip; 13-Inner rod; 14-Elastic ring; 15-Slide rail; 16-Slider ball; 17-Card plate; 18-Turn sleeve; 19-Limit spring; 20-Abutment rod; 21-Insertion hole; 22-Torsion spring bearing; 23-Outlet; 24-Rolling rod; 25-Torsion spring turntable; 26-Slide frame; 27-Slide groove; 28-Friction ring; 29-Top rod; 30-Reset spring; 31-Friction plate; 32-Electromagnet. Detailed Implementation

[0045] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0046] Please see Figures 1-15 This invention provides an intelligent lock-assisted stroller monitoring system and stroller technical solution, including:

[0047] Monitoring module: It records and identifies authorized personnel for strollers and provides image data to identify the baby's status;

[0048] Positioning and communication equipment configuration: Utilizing the BeiDou positioning system and Bluetooth communication technology, small, wearable items such as wristbands and ankle bracelets are made and placed on the baby. At the same time, another Bluetooth receiver module is installed in a concealed and safe location under the stroller to ensure a stable connection between the two.

[0049] Off-car alarm and tracking: When the distance between the baby and the stroller exceeds the safe range and the communication signal is lost, the stroller will immediately and automatically alarm to remind the parents that the baby has been taken away. At the same time, relevant location information will be fed back to the mobile phone in real time, so that parents can quickly locate the baby's location and minimize the risk of the baby getting lost.

[0050] Visitor tracking and recording: If someone approaches the stroller, the camera will automatically track the person's face and record the relevant information in the memory pan-tilt unit, making it convenient for parents to view later and ensuring the baby's safety.

[0051] Baby protection module: It monitors the stroller and baby on two lines, tracks and identifies the face of people approaching the stroller, monitors people’s behavior towards the stroller, transmits and processes the behavior information in real time, and performs electrical control in conjunction with the baby protection straps.

[0052] Abnormal Push Monitoring and Protection: If someone attempts to push the stroller quickly, and that person is an authorized individual, the coded motor under the stroller will quickly record the speed. If the speed is too high, the stroller will automatically decelerate and issue an alarm signal to alert the parents to the possible abnormal situation.

[0053] S2: Smart Lock Collaboration:

[0054] S2-1: When the person pushing the cart is an authorized person:

[0055] S2-1-1: When the stroller is detected to be being pushed, the electromagnet inside the side panel of the cradle is energized and becomes magnetic. The magnetism of the electromagnet attracts and fixes the elastic ring at the middle end of the rod inserted into the ventilation hole of the auxiliary seat, and the straps provide protection for the baby.

[0056] S2-1-2: When a person is detected pushing the stroller quickly, the magnetic attraction between the connecting strap and the ventilation hole will protect the baby and slow down the stroller in time.

[0057] S2-1-3: When it detects that a person is picking up the baby, it automatically de-energizes the electromagnet in the side panel of the cradle and removes the secondary bracket, making it easier for authorized personnel to pick up the baby.

[0058] S2-2: When the person pushing the cart is an unauthorized person:

[0059] S2-2-1: When the stroller is detected to be being pushed, an alarm will sound and the alarm information will be sent to the parent's mobile APP. At the same time, the stroller wheels will be automatically locked, making it impossible to push the stroller.

[0060] S2-2-2: When a person is detected trying to pick up the baby, the electromagnet inside the side panel of the cradle is continuously powered, preventing the secondary seat from being disassembled. The baby is then protected with straps to prevent the baby from being taken away.

[0061] The infant status monitoring module monitors the infant's status based on the image data provided by the monitoring module;

[0062] Infant status monitoring and soothing: When the stroller is stationary, the camera automatically starts monitoring the baby. With the help of facial AI technology, it accurately observes the baby's status. Once it detects that the baby is crying, the system will automatically play soft music, and at the same time, the motor below will drive the stroller to rock back and forth slightly to soothe the baby.

[0063] The electric power-assisted drive module provides real-time assistance to the stroller based on road information while it is being pushed, helping parents to push the stroller. Equipped with a high-efficiency electric power-assisted system, pushing the stroller is easier and less strenuous, providing parents with a smooth pushing experience on both flat roads and slightly sloping surfaces.

[0064] The speed monitoring and adjustment module adjusts the pushing speed of the stroller in real time while it is being pushed.

[0065] Real-time monitoring and intelligent speed control: The stroller uses a surveillance camera to monitor the distance ahead in real time. When an object is detected approaching, the motor automatically reduces its speed to ensure driving safety. In an emergency, the stroller will automatically move slightly backward in the opposite direction to avoid collisions.

[0066] It should be added that the monitoring module includes:

[0067] Identity recognition module: It uses an OpenMV camera sensor combined with a facial AI algorithm to perform facial recognition on the person pushing the stroller who is close to the stroller, and determines whether the person is an authorized person whose information has been pre-recorded, so as to realize identity verification;

[0068] It uses an OpenMV camera sensor, which is installed on the stroller to capture facial images of the person pushing the stroller; it has a built-in facial AI algorithm model, which uses a local microprocessor to compare facial features and confirm whether the person is an authorized person (authorized person information is uploaded to local storage in advance via a mobile APP).

[0069] Status monitoring module: includes an encoder motor sensor and a pressure sensor. The encoder motor sensor is used to monitor the pushing speed and movement status of the stroller in real time; the pressure sensor is set on the surface of the baby seat to detect whether the baby is being held.

[0070] The encoder motor sensor is integrated into the stroller drive wheel to collect wheel speed in real time and convert it into pushing speed data, with a sampling frequency of 10Hz; the pressure sensor is a thin-film pressure sensor, which is laid on the back of the baby seat and the seat cushion to detect pressure changes and determine whether the baby is in the stroller.

[0071] The electromagnet latch assembly is built into the side panels on both sides of the cradle. It uses a DC12V electromagnet. When energized, it generates magnetic force to attract the latch and lock the cradle. When de-energized, the magnetic force disappears and the cradle is unlocked. The wheel locking mechanism uses an electromagnetic brake connected to the wheel axle. When energized, the brake pads grip the wheel axle to lock the cradle. The alarm module uses a 120dB buzzer and a red LED warning light.

[0072] The execution module includes an electromagnet latch assembly, a wheel locking mechanism, and an alarm module. The electromagnet latch assembly is built into the baby harness latch and locks and unlocks by energizing / de-energizing; the wheel locking mechanism is linked to the stroller wheel braking system to lock the wheels instantly; the alarm module includes a buzzer and a warning light for audible and visual alarms.

[0073] The system uses an STM32RCT6 microprocessor to receive data from various sensors, execute control logic, and output PWM signals to control the operation of electromagnets, electromagnetic brakes, and alarm modules.

[0074] Control module: It uses an STM32RCT6 microprocessor as its core, receives identity information from the identity recognition module and speed and pressure data from the status monitoring module, generates control commands based on preset logic, and drives the execution module to perform actions.

[0075] Communication module: Integrates Bluetooth communication module and 5G / Wi-Fi wireless communication technology to push alarm information to parents' mobile APP in real time, realizing remote alerts;

[0076] It uses a Bluetooth 5.0 module to communicate with the positioning bracelet worn by the baby, and a Wi-Fi module to transmit data with the parent's mobile APP, supporting real-time push of alarm information.

[0077] The specific steps can be described as follows:

[0078] Step 1: System Initialization and Identity Pre-entry:

[0079] Parents can use a mobile app to input the facial information of the person authorized to push the stroller into the database of the identity recognition module, and preset parameters such as the pushing speed threshold (e.g., 5km / h) and the format of alarm information push.

[0080] Step 2: Authorized personnel operate the protection procedures:

[0081] When the identity recognition module identifies the person pushing the cart as an authorized person through facial AI recognition, the system enters the authorization protection mode.

[0082] When the encoder motor sensor detects that the stroller has changed from a stationary state to a pushing state, the control module sends an energizing command to the electromagnet buckle assembly, and the buckle automatically locks the baby straps, providing initial protection for the baby.

[0083] If the encoder motor sensor detects that the pushing speed exceeds the preset threshold, the control module will simultaneously perform two operations: first, keep the electromagnet buckle assembly energized to ensure the straps are secure; second, control the motor of the stroller's electric assist system to reduce its output power and achieve automatic speed reduction.

[0084] When the pressure sensor detects that the baby has been picked up (the pressure value drops sharply and remains for a preset time), the control module sends a power-off command to the electromagnet latch assembly, the latch unlocks, and the parent can easily pick up the baby.

[0085] Step 3: Protective procedures for unauthorized personnel:

[0086] When the identity recognition module identifies the person pushing the cart as an unauthorized person, the system enters the interception and protection mode.

[0087] If the encoder motor sensor detects that the stroller is being pushed, the control module immediately activates the alarm module (buzzer sounds + warning light flashes), and at the same time pushes the alarm information containing location information to the parent's mobile APP through the communication module; simultaneously, it drives the wheel locking mechanism to lock the wheels and prevent them from turning.

[0088] If the pressure sensor detects the baby being picked up (pressure value drops suddenly), and the identification module does not identify an authorized person, the control module controls the electromagnet buckle assembly to remain energized and locked, preventing the straps from opening; at the same time, the alarm module continuously sounds an alarm, and the communication module pushes a "unauthorized baby picking" warning message to the parent's mobile APP.

[0089] Advanced PID and neural network control algorithms are used to optimize system response speed and control accuracy. The incremental PID algorithm flow is as follows:

[0090] Δu(k)=Kp×[e(k)-e(k-1)]+Ki×e(k)+Kd×[e(k)-2e(k-1)+e(k-2)] where: Δu(k): the increment of the motor control quantity at the current moment (used to adjust the motor output power);

[0091] Kp: Proportional coefficient, Kp = 0.6~1.2 (dynamically adapted according to road conditions);

[0092] Ki: Integral coefficient, Ki = 0.05~0.2;

[0093] Kd: Differential coefficient, Kd = 0.1 to 0.5;

[0094] e(k) = target velocity - current actual velocity (current error);

[0095] e(k-1): Error at the previous time step;

[0096] e(k-2): Error between the two previous time points.

[0097] The encoder motor sensor is used for speed monitoring; speed calculation is based on pulse signals.

[0098] v = (N × C) / (T × G)

[0099] in:

[0100] v: Actual pushing speed of the stroller (unit: m / s);

[0101] N: The number of pulses output by the encoder motor within the sampling time T;

[0102] C: Wheel circumference (unit: m, C = π × wheel diameter);

[0103] T: Sampling time (unit: s, usually 0.1 to 0.5 s);

[0104] G: Motor reduction ratio (fixed according to hardware configuration, such as 1:10).

[0105] Automatic speed reduction during abnormal propulsion monitoring when speed is too high; abnormal speed threshold dynamically calculated.

[0106] v_threshold = v_base × (1 + k × road slope coefficient)

[0107] in:

[0108] v_threshold: Threshold for judging abnormal pushes (exceeding this value triggers a slowdown);

[0109] v_base: Base safe speed (default value 1.5m / s on flat ground);

[0110] k: Slope correction factor (k = 0.3 for uphill, k = 0.5 for downhill);

[0111] Road surface slope coefficient: obtained in real time by tilt sensor (-0.2 to 0.2, negative values ​​are downhill).

[0112] In another preferred embodiment of the present invention, the stroller comprises: a frame 1, a cradle 2, a handle 3, and a canopy 4, wherein a monitoring module 5 is installed on the canopy 4, and further comprises:

[0113] Ventilation holes 6 are provided on the side panels on both sides of the cradle 2.

[0114] Main card holder 8, which can be folded and installed at the bottom of cradle 2;

[0115] Sub-card slots 9, two sets of sub-card slots 9 are magnetically attached to both sides of the main card slot 8;

[0116] The buckle mechanism is connected to the main buckle seat 8 and the secondary buckle seat 9. When the two sets of secondary buckle seats 9 are separated from the main buckle seat 8, the ends of the winding rod 24 used to wrap the binding strap 11 in the main buckle seat 8 are restricted, thus limiting the position of the main buckle seat 8. At the same time, when the two sets of secondary buckle seats 9 are attached to both sides of the cradle 2, the secondary buckle seats 9 are passively driven by the buckle mechanism to lock the secondary buckle seats 9 to both sides of the cradle 2, and cooperate with the monitoring system in the monitoring module 5 to limit the secondary buckle seats 9.

[0117] In another embodiment of the present invention, a folding groove 7 is provided at one end of the bottom of the cradle 2. A main card seat 8 and two sets of auxiliary card seats 9 are detachably installed in the folding groove 7. A winding rod 24 is rotatably installed in both the main card seat 8 and the two sets of auxiliary card seats 9 through a torsion spring turntable 25. One end of a binding strap 11 is rolled on the surface of the winding rod 24. The other end of the binding strap 11 in the main card seat 8 passes through the strap outlet 23 and is fixedly connected to the inner side wall of the folding groove 7. The other end of the binding strap 11 in the auxiliary card seats 9 passes through the strap outlet 23 and is fixedly connected to both sides of the main card seat 8.

[0118] In another embodiment of the present invention, the outer periphery of the tape outlet 23 opened on the inner side of the sub-card seat 9 is provided with magnetic strips 12 with opposite magnetic properties on both sides of the main card seat 8. The cavity inside the main card seat 8 for wrapping the binding tape 11 is provided with a sliding groove 27 at both ends corresponding to the position of the torsion spring turntable 25. A slide frame 26 is slidably connected in the sliding groove 27. A friction ring 28 is fixedly installed on the bottom inner side of the slide frame 26. The top two ends of the slide frame 26 are connected to the inner wall of the main card seat 8 through a return spring 30. A top rod 29 is fixedly connected to the middle of the top of the slide frame 26 and inserted into the outer sides of the main card seat 8 and abutting against the two sets of sub-card seats 9.

[0119] In another embodiment of the present invention, a friction plate 31 is movably installed in the middle of the bottom of the two sets of sub-card seats 9. An inner rod 13 is fixedly connected to the back side of the friction plate 31. The inner rod 13 slides through the outer side of the two sets of sub-card seats 9 and slides into the rotating sleeve 18. The rotating sleeve 18 is rotatably connected to the insertion rod 10. The insertion rod 10 is fixedly installed on the surface of the sub-card seat 9.

[0120] In another embodiment of the present invention, the latching mechanism includes an elastic ring 14 rotatably connected to the middle of the insert rod 10 via a torsion spring bearing 22. A contact rod 20 with a right-angled triangular cross-section is symmetrically installed on the inner middle of the elastic ring 14. The contact rod 20 is slidably inserted into the insertion hole 21, which is correspondingly opened on the outer periphery of the rotating sleeve 18. The bottom end of the contact rod 20 passes through the insertion hole 21 and is inserted into the rotating sleeve 18 and slidably contacts the bottom end of the inner rod 13. The bottom end of the inner rod 13 is connected to the rotating sleeve 18 via a limiting spring 19.

[0121] In another embodiment of the present invention, a slide rail 15 is symmetrically provided on one side of the inner rod 13 of the rotating sleeve 18, and a slider 16 is slidably connected in the slide rail 15. The slider 16 is located at the bottom of one end of the clamping plate 17, and the other end of the clamping plate 17 is rotatably connected to both sides of the insertion rod 10 through a rotating shaft with a rotation function.

[0122] In another embodiment of the present invention, the initial position of the ball 16 remaining in the slide rail 15 gradually deepens towards the end position, and the initial position of the slide rail 15 extends inward, thus setting the slide rail 15 into an inclined L-shape.

[0123] In another embodiment of the present invention, an electromagnet 32 ​​is provided inside the vent hole 6 for magnetic connection between the electromagnet 32 ​​and the elastic ring 14.

[0124] When using the stroller, place the baby in the cradle 2 and secure the baby with the three-point harness 11. The secondary bracket 9 connected to the end of the harness 11 is then inserted into the side panels of the cradle 2 for fixation. When the baby needs to be picked up, simply remove the secondary bracket 9 from the side panels of the cradle 2. The harness 11 will automatically roll up inside the secondary bracket 9 and the main bracket 8 for storage. After assembling the two sets of secondary brackets 9 and the main bracket 8, store them in the folding slot 7 at the bottom of the cradle 2. When picking up the baby, the monitoring module 5 electrically controls the connection between the secondary bracket 9 and the cradle 2. The secondary bracket 9 can only be removed from the side panels of the cradle 2 if the monitoring module 5 identifies that the person picking up the baby is an authorized person. If the monitoring module 5 identifies that the person picking up the baby is not an authorized person, the secondary bracket 9 cannot be removed from the side panels of the cradle 2, and an alarm will be triggered.

[0125] To achieve the above functions, the following points need to be explained:

[0126] The end of the cradle 2 where the baby's head is placed is closed, which is the head end, while the end of the cradle 2 where the baby's legs are placed is provided with a leg end that can be rotated to open or close.

[0127] A folding groove 7 is provided in the middle of the leg end at the bottom of the cradle 2. The main card holder 8 and two sets of auxiliary card holders 9 are folded and installed in the folding groove 7. The two sets of auxiliary card holders 9 and the main card holder 8 are covered with straps 11. The other end of the straps 11 rolled in the main card holder 8 is fixedly connected to the bottom end of the folding groove 7. The auxiliary card holders 9 are magnetically connected to both sides of the main card holder 8. The straps 11 are fixedly connected to both sides of the main card holder 8. The other end of the straps 11 is rolled in the auxiliary card holder 9 through the strap outlet 23 inside the auxiliary card holder 9. When needed, the main card holder 8 can be pulled out of the folding groove 7 to automatically release the straps 11. At the same time, when the auxiliary card holder 9 is pulled, the straps 11 rolled in the auxiliary card holder 9 are pulled outward to protect the baby.

[0128] After placing the baby in the cradle 2, pull out both the main seat 8 and the secondary seat 9 from the folding slot 7 and stretch them outward to the required length. At this time, the strap 11 should be positioned at the baby's crotch to support the baby's crotch. Then, separate the two secondary seats 9 from the main seat 8 one by one or simultaneously, and insert the secondary seats 9 into the ventilation holes 6 on the side panels of the cradle 2 at the required positions. This will limit and fix the secondary seats 9 on the side panels of the cradle 2. When the secondary seats 9 are stretched, the strap 11 rolled inside the secondary seats 9 will be automatically released outward, providing three-point protection for the baby with the straps 11 on the two sets of secondary seats 9 and the strap 11 in the main seat 8.

[0129] During the process of removing the two sets of auxiliary card holders 9 from both sides of the main card holder 8, it should be noted that: when the main card holder 8 is pulled out of the folding groove 7, both sets of auxiliary card holders 9 are magnetically attracted to both sides of the main card holder 8 by the magnetic strips 12. At this time, the two sets of auxiliary card holders 9 will press the top rod 29, which in turn presses the slide 26 that is slidably connected at both ends inside the main card holder 8. This separates the friction ring 28 set in the slide 26 from the torsion spring turntables 25 set at both ends of the winding rod 24 that is wrapped with the binding strap 11 inside the main card holder 8. At this time, the two ends of the winding rod 24 are not restricted by the friction ring 28 and can rotate freely, thereby releasing the binding strap 11 wrapped on the surface outward. After one set of auxiliary card holders 9 is separated from the main card holder 8, the separated set of auxiliary card holders 9 loses the restriction on the top rod 29, causing the slide 26 to reset. Under the action of spring 30, the slide 26 slides in the slide groove 27, and the friction ring 28 is attached to the surface of the torsion spring turntable 25 on the corresponding side, thereby providing a certain friction force for the rotation of the winding rod 24, thereby tightening and restricting the strap 11 in the main card seat 8, and limiting the position of the main card seat 8. At this time, since only one end of the torsion spring turntable 25 of the winding rod 24 is subject to friction force, the limiting force on the strap 11 in the main card seat 8 is small. Therefore, the position of the main card seat 8 can still be adjusted to a certain extent during this process. After the other set of auxiliary card seats 9 is also separated from one side of the main card seat 8, similarly, the torsion spring turntable 25 at the other end of the winding rod 24 is also subject to friction restriction, thereby limiting the winding rod 24 in the main card seat 8 with a larger friction force, thus fixing the position of the main card seat 8.

[0130] When the secondary card holder 9 is inserted into the ventilation holes 6 opened in the two side plates of the cradle 2 for fixing, the insertion rod 10 set on the outside of the secondary card holder 9 is directly inserted into the ventilation hole 6 at the desired position to automatically complete the fixing and limiting.

[0131] Regarding the aforementioned limiting process, it should be noted that: the insertion rod 10 on the outer side of the auxiliary card seat 9 is adapted to the size of the ventilation holes 6 opened on both side plates of the cradle 2, and a card plate 17 is rotatably connected to one end of the insertion rod 10 via a rotating shaft, and an elastic ring 14 is rotatably installed at the middle end of the insertion rod 10 via a torsion spring bearing 22. Abutment rods 20 are symmetrically arranged on the inner side of the elastic ring 14, and the abutment rods 20 are set as cones with a right-angled triangular cross-section. The larger end is connected to the inner side of the elastic ring 14, while the insertion rod 10 is hollow and rotates... A rotating sleeve 18 is provided, with a hollow cavity inside which an inner rod 13 is slidably inserted. The bottom end of the inner rod 13 is connected to the inner wall of the rotating sleeve 18 via a limiting spring 19. The other end of the rotating sleeve 18 passes through the insert rod 10 and is inserted into the sub-seat 9 to fix a friction plate 31. One end of a retaining plate 17 is rotatably connected to the insert rod 10 via a rotating shaft, and a ball bearing 16 at the bottom of the other end of the retaining plate 17 is slidably connected to a slide rail 15 on the outer periphery of the rotating sleeve 18. The slide rail 15 is configured to gradually increase in depth from the initial position to the end position. The design of the slide rail 15 depth allows the slider 16 to gradually slide inward as the rotating sleeve 18 rotates from its initial position to its final position, thereby folding the retaining plate 17 inward toward the insert rod 10. The position of the abutment rod 20 on the inner side of the elastic ring 14 corresponds to the position of the insertion hole 21 on the outer periphery of the rotating sleeve 18 and the position of the bottom end of the inner rod 13. This design ensures that as the elastic ring 14 retracts inward, the abutment rod 20 is inserted into the rotating sleeve 18 through the insertion hole 21 and abuts against the bottom end of the inner rod 13, utilizing the abutment... The shape of the contact rod 20 itself limits the inner rod 13 to drive the friction plate 31 to abut against the sub-seat 9, and the friction plate 31 to adhere to the surface of the coil rod 24 in the sub-seat 9, thereby attaching the friction plate 31 to the binding strap 11 wrapped on the surface of the coil rod 24. The friction between the friction plate 31 and the binding strap 11 is used to limit the extension and retraction of the coil rod 24. After the insertion rod 10 is inserted into the vent hole 6, the position of the coil rod 24 in the sub-seat 9 is limited, thereby fixing the length of the binding strap 11 that is released outward.

[0132] After the sub-card holder 9 is inserted into the vent hole 6, an elastic ring 14 made of iron or other materials that can be magnetically attracted and has elasticity is inserted into the vent hole 6. The outward protruding end of the card plate 17 on the outside of the insertion rod 10 corresponds to the outer wall of the vent hole 6. The card plate 17 restricts the insertion rod 10 from being pulled outward by limiting the space between the insertion rod 10 and the two side plates of the cradle 2. At this time, the elastic ring 14 is magnetically attracted to the electromagnet 32 ​​located in the middle of the inner wall of the vent hole 6, thereby fixing the position of the insertion rod 10 in the vent hole 6. The insertion rod 10 can only rotate in the vent hole 6 and cannot be pulled outward. Only after the monitoring module 5 identifies an authorized person will the electromagnet 32 ​​be de-energized, at which point the insertion rod 10 can be pulled out of the vent hole 6.

[0133] When removing the secondary card holder 9 from the side panels of the cradle 2, after the personnel pass the identification through the monitoring module 5, the secondary card holder 9 can be rotated. At this time, due to the compression of the vent hole 6, the elastic ring 14 inserts the abutment rod 20 into the rotating sleeve 18, and the elastic ring 14 and the rotating sleeve 18 are combined due to the combination of the abutment rod 20. At this time, the secondary card holder 9 is rotated. During the rotation of the secondary card holder 9, the elastic ring 14 rotates due to the friction between the elastic ring 14 and the vent hole 6. The rotation of the elastic ring 14 drives the rotating sleeve 18 to rotate, and the slide rail 15 opened on the periphery of the end of the rotating sleeve 18 drives the slider 16 to slide, thereby rotating the slider 16 from the initial position to the deep end position in the slide rail 15. At this time, because the end of the slide rail 15 is deep, during the rotation, the slider 16 can fold the top of the card plate 17 into the insertion rod 10 under the rotation of the bottom rotating shaft, and thus the card plate 17 is folded into the insertion rod 10. After plate 17 is folded inside insert rod 10, insert rod 10 can be pulled out from vent hole 6. After insert rod 10 is pulled out, torsion spring shaft returns to its original position, elastic plate automatically bulges outward to return to its original position, and contact rod 20 is pulled out from insertion hole 21. Rotating sleeve 18 and elastic plate return to their original positions under the rotation of torsion spring bearing 22. Sliding ball 16 slides to its initial position in slide rail 15, and locking plate 17 also returns to its original position. The shaft at the bottom of locking plate 17 connected to insert rod 10 has automatic rotation. The effect is that after the abutment rod 20 is pulled out from the insertion hole 21, the inner rod 13 will be reinserted into the rotating sleeve 18 under the action of the limiting spring 19, thus separating the friction plate 31 from the coil rod 24. At the same time, the initial position of the slide rail 15 extends inward, which can ensure that when the insertion rod 10 is inserted into the vent hole 6, the vent hole 6 will abut against the plate 17 when it contacts the plate 17, thus pushing the ball 16 deeper into the depth of the extension of the initial position of the slide rail 15.

[0134] When it is time to pick up the baby, simply remove the two sets of auxiliary brackets 9 from the side panels of the cradle 2 and attach them to the sides of the main bracket 8. At this time, the two sets of auxiliary brackets 9 push the top rods 29 on both sides of the main bracket 8, thereby removing the restriction on the torsion spring turntables 25 at both ends of the roll rod 24 inside the main bracket 8. Under the rotation of the torsion spring turntables 25, the straps 11 are automatically rolled onto the surface of the roll rod 24. Then, the assembled two sets of auxiliary brackets 9 and the main bracket 8 can be placed back into the folding slot 7 and folded.

[0135] This design utilizes multiple ventilation holes 6 on both sides of the cradle 2 to assemble the two sets of auxiliary brackets 9. The positions of the two sets of auxiliary brackets 9 and the straps 11 can be adjusted according to actual use. Furthermore, an electromagnet 32 ​​that can be energized is installed in the middle of the two side panels of the cradle 2, and ventilation holes 6 are opened at corresponding positions on the two side panels of the cradle 2 and the electromagnet 32. This facilitates the disassembly and assembly of the auxiliary brackets 9 and their electrical connection with the monitoring module 5. This enables the electrical connection between the lock body connected to the child-protecting straps 11 and the monitoring module 5, thereby improving the safety of the stroller for infant protection.

[0136] It should be noted that the friction plate 31 inserted into the sub-slot 9 is set in an arc shape on the side corresponding to the winding rod 24, and its surface is provided with a structure to increase the friction between the friction plate 31 and the strap 11. This achieves that after the friction plate 31 contacts the strap 11, the position of the strap 11 is squeezed and fixed by a large friction force, while the position of the strap 11 is limited by the friction force.

[0137] The inner rod 13 can only slide and extend within the rotating sleeve 18, while the rotating sleeve 18 can only rotate within the insert rod 10.

[0138] The insertion rod 10 is inserted into the inner rod 13 and fixedly connected to the outer wall of the sub-cab seat 9. When the sub-cab seat 9 is disassembled and rotated, the card plate 17 is in contact with the two side plates of the cradle 2, so the elastic ring 14 can be rotated independently, while the insertion rods 10 at both ends of the elastic ring 14 will not rotate.

[0139] When the insertion rod 10 is inserted into the vent hole 6, the friction between the vent hole 6 and the insertion rod 10, along with the size of the vent hole 6, causes the elastic ring 14 to be squeezed inward and contracted. Therefore, during rotation, the elastic ring 14 rotates in conjunction with the secondary retainer 9. During rotation, one segment of the insertion rod 10 is fixed to the secondary retainer 9, while the other segment is fixed and cannot rotate due to the friction between the retaining plate 17 and the side plate of the cradle 2. Simultaneously, during the withdrawal process, the torsion spring shaft resets the elastic ring 14. During the reset rotation, the friction between the insertion rod 10 and the vent hole 6... Friction also restricts the fixation of the insertion rod 10. Due to its elasticity, the elastic plate expands outward, and the insertion rod 10 retracts into the rotating sleeve 18 under the action of the limiting spring 19. During the process of the elastic ring 14 rebounding outward and rotating, the abutment rod 20 is still inserted in the insertion hole 21, which can drive the rotating sleeve 18 to rotate. The rotating sleeve 18 and the insertion rod 10 are also connected by a torsion spring bearing 22 with a rotational effect. Therefore, through the rotation of the torsion spring bearing 22 and the rotation of the elastic ring 14, the rotating sleeve 18 is rotated, and the slider 16 slides back to the initial position in the slide rail 15.

[0140] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A smart lock-assisted stroller monitoring system, characterized in that, include: Monitoring module: It records and identifies authorized personnel for strollers and provides image data to identify the baby's status; Baby protection module: It monitors the stroller and baby on two lines, tracks and identifies the face of people approaching the stroller, monitors people’s behavior towards the stroller, transmits and processes the behavior information in real time, and performs electrical control in conjunction with the baby protection straps. The infant status monitoring module monitors the infant's status based on the image data provided by the monitoring module; The electric power assist module provides real-time assistance to the stroller based on road information while the stroller is being pushed, helping parents to push the stroller. The speed monitoring and adjustment module adjusts the pushing speed of the stroller in real time while it is being pushed.

2. A stroller, applied to the smart lock-assisted stroller monitoring system as described in claim 1, characterized in that, include: The stroller comprises a frame (1), a cradle (2), a handle (3), and a canopy (4), with a monitoring module (5) installed on the canopy (4). It also includes: Ventilation holes (6) are provided on the side plates on both sides of the cradle (2); Main card holder (8), which is foldable and installed at the bottom of the cradle (2); Sub-card holders (9), the two sets of sub-card holders (9) are magnetically attracted to both sides of the main card holder (8); The buckle mechanism is connected to the main buckle seat (8) and the secondary buckle seat (9). When the two sets of secondary buckle seats (9) are separated from the main buckle seat (8), the two ends of the winding rod (24) used to wrap the binding strap (11) in the main buckle seat (8) are restricted, thus limiting the position of the main buckle seat (8). At the same time, when the two sets of secondary buckle seats (9) are attached to both sides of the cradle (2), the secondary buckle seat (9) is passively driven by the buckle mechanism to lock the secondary buckle seat (9) on both sides of the cradle (2), and cooperates with the monitoring system in the monitoring module (5) to limit the secondary buckle seat (9).

3. A stroller according to claim 2, characterized in that, The bottom of the cradle (2) is provided with a folding groove (7). A main card seat (8) and two sets of auxiliary card seats (9) are detachably installed in the folding groove (7). A winding rod (24) is rotatably installed in the main card seat (8) and the two sets of auxiliary card seats (9) through a torsion spring turntable (25). One end of the winding rod (24) is covered with a binding strap (11). The other end of the binding strap (11) in the main card seat (8) passes through the tape outlet (23) and is fixedly connected to the inner side wall of the folding groove (7). The other end of the binding strap (11) in the auxiliary card seat (9) passes through the tape outlet (23) and is fixedly connected to both sides of the main card seat (8).

4. A stroller according to claim 3, characterized in that, The outer periphery of the tape outlet (23) opened on the inner side of the sub-card holder (9) is equipped with magnetic strips (12) with opposite magnetic properties on both sides of the main card holder (8). The cavity inside the main card holder (8) for wrapping the binding tape (11) has a sliding groove (27) at both ends corresponding to the position of the torsion spring turntable (25). A slide frame (26) is slidably connected in the sliding groove (27). A friction ring (28) is fixedly installed on the bottom inner side of the slide frame (26). The top two ends of the slide frame (26) are connected to the inner wall of the main card holder (8) through a return spring (30). A top rod (29) is fixedly connected to the middle of the top of the slide frame (26) and inserted into the outer sides of the main card holder (8) and abutting against the two sets of sub-card holders (9).

5. A baby stroller according to claim 4, characterized in that, Friction plates (31) are movably installed in the middle of the bottom of the two sets of sub-slots (9). An inner rod (13) is fixedly connected to the back of the friction plate (31). The inner rod (13) slides through the outside of the two sets of sub-slots (9) and slides into the rotating sleeve (18). The rotating sleeve (18) is rotatably connected to the insert rod (10). The insert rod (10) is fixedly installed on the surface of the sub-slot (9).

6. A stroller according to claim 5, characterized in that, The snap-fit ​​mechanism includes an elastic ring (14) rotatably connected to the middle of the insert rod (10) via a torsion spring bearing (22). A contact rod (20) with a right-angled triangular cross-section is symmetrically installed on the inner side of the elastic ring (14). The contact rod (20) is slidably inserted into the insertion hole (21). The insertion hole (21) is correspondingly opened on the outer periphery of the rotating sleeve (18). The bottom end of the contact rod (20) passes through the insertion hole (21) and is inserted into the rotating sleeve (18) and slidably contacts the bottom end of the inner rod (13). The bottom end of the inner rod (13) is connected to the rotating sleeve (18) via a limiting spring (19).

7. A baby stroller according to claim 6, characterized in that, The inner rod (13) of the rotating sleeve (18) has a slide rail (15) symmetrically arranged on one side of the circumference. A slider (16) is slidably connected inside the slide rail (15). The slider (16) is set at the bottom of one end of the clamping plate (17). The other end of the clamping plate (17) is rotatably connected to both sides of the insert rod (10) through a rotating shaft with a rotation function.

8. A stroller according to claim 7, characterized in that, The initial position of the slider (16) in the slide rail (15) gradually deepens towards the end position, and the initial position of the slide rail (15) extends inward, setting the slide rail (15) into an inclined L-shape.

9. A stroller according to claim 8, characterized in that, An electromagnet (32) is provided inside the vent (6) and magnetically connected to the elastic ring (14).

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