A child occupant restraint system

Abstract

The present disclosure relates to a child occupant restraint system, comprising: a seat body; a seat belt; a detection component, which is disposed at the buckling part of the seat belt, the force-bearing part where the seat belt restrains the child occupant, the connection between the seat belt and the seat body or the part where the seat belt passes through, and / or the connection part between the seat body and the motor vehicle, for detecting the working state of the child occupant restraint system; a signal transmitting component, for emitting a preset command signal when a set change occurs in the working state of the child occupant restraint system; and an execution terminal, including a signal receiving end wirelessly communicatively connected to the signal transmitting component, and the execution terminal is configured to execute a preset operation plan according to the command signal. Based on this, in the embodiment of the present application, when the shoulder belt retainer is accurately fastened, an audio-visual file will be played, and when the shoulder belt retainer is detached, the playing of the audio-visual file will be stopped, so as to let the child develop the habit of riding in the child occupant restraint system as required.

Description

Technical Field

[0001] The present disclosure relates to the field of child occupant restraint systems, and particularly to a child occupant restraint system. Background Art

[0002] In China, toddlers who use child occupant restraint systems for the first time generally have an instinctive resistance behavior, which is related to the habit of Chinese parents often holding their children in their arms. Once a toddler is taken out of an adult's arms, they are prone to crying.

[0003] Nowadays, most parents are aware that it is necessary for infants and toddlers to use child occupant restraint systems as required when traveling by motor vehicle to ensure their travel safety. However, the situation where children cry when placed on the seat away from their parents' arms has reduced the experience of parents using safety seats. How to make infants and toddlers willing to actively use child occupant restraint systems is a pain point for parents, and it is also a major demand for parents to correct the improper use of child safety seats in a timely manner. Summary of the Invention

[0004] In view of this, embodiments of the present disclosure provide a child occupant restraint system, which can make infants and toddlers more willing to actively use a safety seat. The detection component for detecting the working state of the child occupant restraint system is associated with an execution terminal. When the safety seat is used correctly, the execution terminal executes a corresponding preset operation plan, such as playing a preset audio-visual file to reward the child, so as to improve the initiative of the child when using the child occupant restraint system, increase the safety of the child when traveling by motor vehicle, and the experience of parents using the child occupant restraint system. When the child safety seat is not used correctly, the execution terminal executes a corresponding preset operation plan, such as stopping playing the audio-visual file or sending an alarm message, so as to remind of the abnormal state of the current child safety seat.

[0005] In one aspect of the present disclosure, a child occupant restraint system is provided, including:

[0006] A seat body detachably connected to a motor vehicle;

[0007] A safety belt connected to the seat body, capable of restraining a child occupant inside the seat body in a buckled state;

[0008] At least one detection component is disposed at the buckling part of the safety belt, the stress part where the safety belt restrains the child occupant, the connection between the safety belt and the seat body, and / or the connection part between the seat body and the motor vehicle, for detecting the working state of the child occupant restraint system;

[0009] At least one signal transmitting component, which is in wired communication connection with the at least one detection component, and is configured to emit a preset command signal when a preset change occurs in the operating state of the child occupant restraint system; and

[0010] An execution terminal, including a signal receiving end communicatively connected to the at least one signal transmitting component, and the execution terminal is configured to execute a preset operation scheme according to at least one of the command signals.

[0011] In some embodiments, the safety belt further includes:

[0012] A first shoulder strap;

[0013] A second shoulder strap; and

[0014] A shoulder strap fixator, including a first cover connected to the first shoulder strap and a second cover connected to the second shoulder strap, and the first cover and the second cover can be detachably connected to each other;

[0015] Wherein, the at least one signal transmitting component includes:

[0016] A first signal transmitter, disposed inside the first cover, including a communication driving circuit, and capable of emitting a preset command signal when the connection state between the first cover and the second cover changes.

[0017] In some embodiments, the detection component includes:

[0018] A stud, fixedly disposed on the second cover, and the height direction thereof faces the first cover;

[0019] A permanent magnet, fixedly disposed at one end of the stud close to the first cover; and

[0020] A first reed switch, disposed inside the first cover, in wired communication connection with the communication driving circuit of the first signal transmitter, and capable of triggering the communication driving circuit of the first signal transmitter to be turned on when its magnetic flux change reaches a set value;

[0021] Wherein, when the first cover and the second cover are buckled to each other, the permanent magnet can change the magnetic flux change of the first reed switch to the set value.

[0022] In some embodiments, when the first cover and the second cover are buckled to each other, the permanent magnet does not contact the first reed switch.

[0023] In some embodiments, when the first cover and the second cover are snapped together, the minimum distance between the permanent magnet and the first reed switch is configured such that when the permanent magnet and the first reed switch move from any distance when the first cover and the second cover are not snapped together to the minimum distance, the change in magnetic flux of the first reed switch caused by the permanent magnet is greater than the critical trigger magnetic flux of the first reed switch.

[0024] In some embodiments, the detection assembly includes:

[0025] A convex post fixedly provided on the second cover and having a height direction facing the first cover; and

[0026] A push-button switch provided on the first signal transmitter and wired-connected to the communication driving circuit of the first signal transmitter, capable of triggering the communication driving circuit of the first signal transmitter to turn on when pressed;

[0027] Wherein, when the first cover and the second cover are snapped together, the convex post can abut against the push-button switch.

[0028] In some embodiments, the child occupant restraint system further includes:

[0029] A fixed seat clamped in the inner cavity of the first cover and having a limiting post on the surface facing the outside of the first cover;

[0030] Wherein, the first signal transmitter is embedded in the limiting post, and when the fixed seat is disposed in the inner cavity of the first cover, it is attached to the inner wall surface of the first cover.

[0031] In some embodiments, the child occupant restraint system further includes:

[0032] A partition film laid between the first signal transmitter and the fixed seat for preventing the first signal transmitter from leaking electricity; and

[0033] A start switch provided on one side of the first signal transmitter close to the first cover;

[0034] Wherein, the first cover is further provided with an opening hole such that the start switch extends out of the outer surface of the first cover from the opening hole.

[0035] In some embodiments, the first cover is further provided with a plurality of through holes on the wall surface where the first signal transmitter is attached, and the plurality of through holes are arranged in a circular array centered on the opening hole.

[0036] In some embodiments, the first cover includes two symmetrically arranged card slots, the second cover includes two symmetrically arranged hooks, and the two hooks can be deformed towards each other to be inserted into or disengaged from the two card slots, so that the first cover and the second cover are buckled or disengaged from each other.

[0037] In some embodiments, the first cover and the second cover are respectively provided with long strip-shaped strap holes for threading the first shoulder strap and the second shoulder strap, and the first cover and the second cover further include:

[0038] Shoulder strap installation inclined slots, which are opened at the outer edge of the strap hole, the depth direction of the slots faces the connection midpoint of the first cover and the second cover, and penetrates through the first cover or the second cover;

[0039] Wherein, the shoulder strap installation inclined slot divides the outer edge of the strap hole into a shorter first section and a longer second section, and the first section is close to the connection midpoint of the first cover and the second cover.

[0040] In some embodiments, the seat belt of the child occupant restraint system further includes:

[0041] A seat belt metal buckle; and

[0042] A seat belt socket;

[0043] Wherein, the at least one signal transmitting component includes:

[0044] A second signal transmitter, fixedly arranged in the seat belt socket, including a communication driving circuit, which can emit a preset command signal when the connection state between the seat belt metal buckle and the seat belt socket changes.

[0045] In some embodiments, the detection component includes:

[0046] A second reed switch, fixedly arranged in the seat belt socket, is wired and communicatively connected to the communication driving circuit of the second signal transmitter, and can trigger the communication driving circuit of the second signal transmitter to be turned on when its own switch is closed;

[0047] Wherein, when the seat belt metal buckle is inserted into the seat belt socket to the bottom, the seat belt metal buckle can increase the magnetic flux of the second reed switch and reach the switch closing condition of the second reed switch.

[0048] In some embodiments, the second reed switch, the communication driving circuit of the second signal transmitter, the magnet and the battery are packaged as an independent package, and the independent package is accommodated in the inner cavity of the seat belt socket or is attached to the outside of the seat belt socket.

[0049] In some embodiments, a shoulder strap cover is further provided at the force-bearing part of the seat belt for restraining a child occupant, and the at least one signal transmitting component includes:

[0050] A third signal transmitter, disposed in the shoulder strap cover, includes a communication driving circuit and is capable of emitting a preset command signal when the force-bearing state of the seat belt changes;

[0051] The at least one detection component includes:

[0052] A pressure sensor, disposed in the shoulder strap cover, is used for measuring the pressure exerted on the seat belt by the child occupant, and is wired communicatively connected to the communication driving circuit of the third signal transmitter. It is capable of turning on the communication driving circuit when the pressure measurement value is within a first pressure range and turning off the communication driving circuit when it is not within the first pressure range.

[0053] In some embodiments, the seat belt is connected to the seat body through a buckle, and the at least one signal transmitting component includes:

[0054] A fourth signal transmitter, disposed on the seat body, near the connection of the seat belt to the seat body or the part where the seat belt passes through, includes a communication driving circuit and is capable of emitting a preset command signal when the restraint state of the seat belt changes;

[0055] The at least one detection component includes:

[0056] A tension sensor, disposed at the connection of the seat belt to the seat body or the part where the seat belt passes through, is used for measuring the tension of the buckle, and is wired communicatively connected to the communication driving circuit of the fourth signal transmitter. It is capable of turning on the communication driving circuit when the tension measurement value is within a second tension range and turning off the communication driving circuit when it is not within the second tension range.

[0057] In some embodiments, the child occupant restraint system is connected to the motor vehicle through an ISOFIX connector, and the at least one signal transmitting component includes:

[0058] A fifth signal transmitter, disposed on the seat body, near the connection part of the seat body to the motor vehicle, includes a communication driving circuit and is capable of emitting a preset command signal when the connection state between the ISOFIX connector and the motor vehicle changes;

[0059] The at least one detection component includes:

[0060] A Hall sensor is disposed within the ISOFIX connector, detects the connection state between the ISOFIX connector and a motor vehicle based on the change in magnetic flux, and is in wired communication connection with the communication drive circuit of the fifth signal transmitter. It can turn on the communication drive circuit when the ISOFIX connector is connected to the motor vehicle and turn off the communication drive circuit when the ISOFIX connector is not connected to the motor vehicle.

[0061] In some embodiments, the at least one signal transmitting component is configured to: when a set change occurs in the operating state of the child occupant restraint system, trigger its own communication drive circuit to turn on, and then send an instruction signal; when no set change occurs in the operating state of the child occupant restraint system, trigger its own communication drive circuit to turn off, and then stop sending the instruction signal.

[0062] In some embodiments, the at least one signal transmitting component is further configured to: be in a power-on sleep state after being turned on; send a preset instruction signal after its communication drive circuit has been turned on for more than a second set duration; and re-enter the power-on sleep state when the communication drive circuit fails to be re-connected within a first set duration after stopping sending the instruction signal.

[0063] In some embodiments, the at least one signal transmitting component is wirelessly communication-connected to the execution terminal based on Bluetooth technology. The instruction signal sent by the at least one signal transmitting component includes a set of preset Bluetooth instructions, and the Bluetooth instructions are compiled according to the Bluetooth HID protocol. When the execution terminal is Bluetooth paired and connected to the at least one signal transmitting component, the Bluetooth instructions can trigger the execution terminal to execute a preset operation plan.

[0064] In some embodiments, the at least one signal transmitting component is further configured to: send a Bluetooth signal after being turned on for the execution terminal within the Bluetooth signal reception range to search; establish a Bluetooth connection and pair with the execution terminal in response to the password input by the execution terminal; and automatically Bluetooth connect to the execution terminal when the execution terminal that has already been paired is within the Bluetooth signal reception range when there is no Bluetooth pairing.

[0065] In some embodiments, the at least one signal transmitting component is wirelessly communication-connected to the execution terminal through a radio frequency chip, and the radio frequency chip is embedded with an instruction set for controlling the execution terminal to execute a preset operation plan.

[0066] In some embodiments, the execution terminal includes:

[0067] A smart phone or a tablet computer, which is arranged at the back of the headrest or the backrest of the front seat facing the child occupant restraint system, is Bluetooth-connected to the at least one signal transmitting component, and is configured to: play a preset audio-visual file when receiving at least one of the command signals, pause playing the preset audio-visual file when at least one of the command signals is interrupted, and continue playing the preset audio-visual file when the command signal is received again within a first set duration after at least one of the command signals is interrupted.

[0068] In some embodiments, the execution terminal includes:

[0069] A motor vehicle multimedia display screen, which is Bluetooth-connected to the at least one signal transmitting component, can display the detection data of the at least one detection component, and is configured to: play a preset audio-visual file when receiving at least one of the command signals, pause playing the preset audio-visual file when at least one of the command signals is interrupted, and continue playing the preset audio-visual file when the command signal is received again within a first set duration after at least one of the command signals is interrupted.

[0070] In some embodiments, the execution terminal includes:

[0071] A driving recorder display, which is wirelessly communicatively connected to the at least one signal transmitting component through a Bluetooth or a radio frequency chip, and is configured to: based on an embedded RTOS system or a LINUX system, through an embedded playback program, in response to a received Bluetooth command, perform playback control on the audio-visuals pre-stored in the driving recorder display.

[0072] In some embodiments, the execution terminal includes:

[0073] A detachable display terminal, which can be hooked to an internal function part of a motor vehicle or a vehicle key, is wirelessly communicatively connected to the at least one signal transmitting component through a radio frequency chip, and is configured to emit sound, light, and vibration alarm information after a first set duration after at least one of the command signals is interrupted and at least one of the command signals fails to be received again.

[0074] In some embodiments, the detachable display terminal is a handheld alarm terminal, and the handheld alarm terminal further includes a distance determination module, and the distance determination module is configured to emit sound, light, and vibration alarm information when the distance between itself and the at least one signal transmitting component exceeds a set distance.

[0075] In some embodiments, the at least one signal transmitting component is in wired communication connection with the at least one detection component in a one-to-one correspondence, and the signal transmitting component is in wireless communication connection with the execution terminal in a one-to-one or one-to-many manner. One or more of the execution terminals are configured to: execute a preset operation plan according to the corresponding one instruction signal.

[0076] In some embodiments, the at least one signal transmitting component is in wired communication connection with the at least one detection component in a one-to-one correspondence, and at least one of the signal transmitting components is in wireless communication connection with the at least one execution terminal in a many-to-one or many-to-many manner. One or more of the execution terminals are configured to: execute a preset operation plan according to the corresponding multiple instruction signals.

[0077] Therefore, according to the embodiments of the present disclosure, when the shoulder strap retainer is accurately constrained, an audio-visual file will be played, and when the shoulder strap retainer is detached, the playing of the audio-visual file will stop, enabling the infants and young children riding in the child occupant restraint system to form a causal relationship understanding between riding in the child occupant restraint system as required and playing the audio-visual file, and further developing the habit of riding in the child occupant restraint system as required in order to watch the favorite audio-visual file. BRIEF DESCRIPTION OF THE DRAWINGS

[0078] The drawings forming a part of the specification depict embodiments of the present disclosure and, together with the description, are used to explain the principles of the present disclosure.

[0079] Referring to the drawings, the present disclosure can be more clearly understood from the following detailed description, wherein:

[0080] Figure 1 is a schematic structural view of the shoulder strap retainer of the child occupant restraint system from a front view angle according to some embodiments of the present disclosure;

[0081] Figure 2 is a disassembled structural view of the shoulder strap retainer of the child occupant restraint system including a reed switch and a permanent magnet according to some embodiments of the present disclosure;

[0082] Figure 3 is a schematic structural view of the position where the permanent magnet is disposed on the shoulder strap retainer of the child occupant restraint system according to some embodiments of the present disclosure;

[0083] Figure 4 is a schematic view showing the distance between the permanent magnet and the convex post in the buckled state of the shoulder strap retainer of the child occupant restraint system according to some embodiments of the present disclosure;

[0084] Figure 5 is a disassembled structural view of the shoulder strap retainer of the child occupant restraint system including a push-button switch and a convex post according to other embodiments of the present disclosure;

[0085] Figure 6 Schematic structural diagram of the assembled state of the first cover and the second cover of the shoulder belt retainer of a child occupant restraint system according to some other embodiments of the present disclosure;

[0086] Figure 7 Schematic structural diagram of the assembled state of the first signal transmitting component and the second cover of the shoulder belt retainer of a child occupant restraint system according to some other embodiments of the present disclosure;

[0087] Figure 8 Schematic structural diagram of the assembled state of the first signal transmitting component and the first cover of the shoulder belt retainer of a child occupant restraint system according to some other embodiments of the present disclosure;

[0088] Figure 9 Schematic structural diagram of the assembled state of the first signal transmitting component and the fixed seat of the shoulder belt retainer of a child occupant restraint system according to some other embodiments of the present disclosure;

[0089] Figure 10 Schematic structural diagram of the rear view angle of the shoulder belt retainer of a child occupant restraint system according to some embodiments of the present disclosure;

[0090] Figure 11 Schematic structural diagram of the relative position of the shoulder belt installation chute and the belt threading hole of the shoulder belt retainer of a child occupant restraint system according to some embodiments of the present disclosure;

[0091] Figure 12 Schematic structural diagram of the connection state of the first shoulder belt, the second shoulder belt and the shoulder belt retainer of a child occupant restraint system according to some embodiments of the present disclosure;

[0092] Figure 13 Schematic structural diagram of the mating connection between the seat belt metal buckle and the seat belt jack of a child occupant restraint system according to some embodiments of the present disclosure;

[0093] Figure 14 Schematic structural diagram of the non-mating state between the seat belt metal buckle and the seat belt jack of a child occupant restraint system according to some embodiments of the present disclosure;

[0094] Figure 15 Schematic structural diagram of the reed switch of a child occupant restraint system according to some embodiments of the present disclosure;

[0095] Figure 16 Schematic diagram of the installation position of the shoulder belt cover and the third signal transmitter of a child occupant restraint system according to some embodiments of the present disclosure;

[0096] Figure 17 Schematic diagram of the installation position of the shoulder belt cover and the pressure sensor of a child occupant restraint system according to some embodiments of the present disclosure;

[0097] Figure 18 Schematic diagram of the setting positions of the buckle, the tension sensor, and the fourth signal transmitter of the child occupant restraint system according to some embodiments of the present disclosure;

[0098] Figure 19 Schematic diagram of the setting positions of the ISOFIX connector and the fifth signal transmitter of the child occupant restraint system according to some embodiments of the present disclosure;

[0099] Figure 20 Schematic diagram of the setting positions of the Hall sensor and the fifth signal transmitter of the child occupant restraint system according to some embodiments of the present disclosure;

[0100] Figure 21 Schematic diagram of the structure of the handheld alarm terminal of the child occupant restraint system according to some embodiments of the present disclosure;

[0101] In the figure:

[0102] 1, seat belt; 11, first shoulder belt; 12, second shoulder belt; 2, shoulder belt fixator; 21, first cover; 211, card slot; 212, through hole; 22, second cover; 221, hook; 222, convex post; 223, permanent magnet; 3, first signal transmitting assembly; 31, fixing base; 311, limiting post; 32, first signal transmitter; 321, push-button switch; 322, first reed switch; 4, belt threading hole; 41, shoulder belt installation inclined slot; 5, seat body; 61, seat belt metal buckle; 62, seat belt socket; 63, second reed switch; 64, second signal transmitter; 71, shoulder belt cover; 72, third signal transmitter; 73, pressure sensor; 81, buckle; 82, tension sensor; 83, fourth signal transmitter; 91, ISOFIX connector; 92, Hall sensor; 93, fifth signal transmitter; 10, handheld alarm terminal.

[0103] It should be understood that the dimensions of the various parts shown in the drawings are not drawn according to the actual proportional relationship. In addition, the same or similar reference numerals represent the same or similar components. Detailed implementation manners

[0104] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and in no way limits the present disclosure or its application or use. The present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the present disclosure thorough and complete and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that: Unless otherwise specifically stated, the relative arrangements of components and steps, the compositions of materials, numerical expressions, and numerical values set forth in these embodiments should be construed as merely exemplary and not as limitations.

[0105] As used in the present disclosure, words such as "first", "second", and the like do not denote any order, quantity, or importance, but are merely used to distinguish different parts. Words such as "comprising" or "including" mean that the elements before the word cover the elements listed after the word, and do not exclude the possibility of also covering other elements. Terms such as "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships, and when the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0106] In the present disclosure, when it is described that a specific device is located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device. When it is described that a specific device is connected to other devices, the specific device may be directly connected to the other devices without an intermediate device, or may not be directly connected to the other devices and have an intermediate device.

[0107] All terms used in the present disclosure (including technical terms or scientific terms) have the same meaning as understood by those of ordinary skill in the art to which the present disclosure pertains, unless otherwise specifically defined. It should also be understood that terms defined in a general dictionary, such as those, should be construed to have a meaning consistent with their meaning in the context of the relevant art and should not be interpreted in an idealized or overly formal sense, unless specifically defined as such here.

[0108] Techniques, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods, and devices should be regarded as part of the specification.

[0109] When traveling in a motor vehicle, in accordance with relevant safety regulations, infants and young children should actively use a child restraint system and ensure that the child restraint system is used correctly. However, the applicant's research found that infants and young children generally have an active nature and it is difficult for them to sit quietly in the child restraint system for a long time. In addition, infants and young children in China are used to being held by their parents, so it is easy for children to cry continuously when they leave their parents' arms. In particular, they may resist using the child restraint system, which not only affects the experience of parents traveling with their children, but also may pose a safety hazard due to incorrect use of the child restraint system.

[0110] In view of this, as Figures 1 to 21 shown: In one aspect of the present disclosure, a child restraint system is provided, including:

[0111] A seat body 5, detachably connected to the motor vehicle;

[0112] A safety belt 1, connected to the seat body 5, capable of restraining a child occupant inside the seat body 5 in a buckled state;

[0113] At least one detection component, arranged at the buckling part of the safety belt 1, the force-bearing part where the safety belt 1 restrains the child occupant, the connection between the safety belt 1 and the seat body 5 or the part where the safety belt 1 passes through, and / or the connection part between the seat body 5 and the motor vehicle, for detecting the working state of the child restraint system;

[0114] At least one signal transmitting component, in wired communication connection with the at least one detection component, for emitting a preset command signal when a preset change occurs in the working state of the child restraint system; and

[0115] An execution terminal, including a signal receiving end communicatively connected to the at least one signal transmitting component, and the execution terminal is configured to execute a preset operation plan according to at least one of the command signals.

[0116] The above detection components are arranged at different parts on the safety belt 1 or the seat body 5 to comprehensively check the working state of the child restraint system: The buckling part of the safety belt 1 is related to whether the buckleable belt bodies in the safety belt 1 will come off, to assess the risk of the child detaching from the safety belt 1; the force-bearing part where the safety belt 1 restrains the child occupant is mostly associated with the shoulders of the occupant, and the detection component here is used to evaluate the force on the safety belt 1; the connection part between the safety belt 1 and the seat body 5 or the part where the safety belt 1 passes through, as well as the connection part between the seat body 5 and the motor vehicle, are to ensure the integrity of the accessories of the child restraint system itself and the stability of the installation.

[0117] The above-mentioned execution terminal may include types of terminals that give positive feedback to children, such as audio and video players, toys that can move or make sounds. Thus, when a child correctly uses a child occupant restraint system, it triggers the playback of audio and video or the sound of the toy, attracting the child's attention and making the child willing to actively use the child occupant restraint system. When the child fails to correctly use the child occupant restraint system, the playback of audio and video or the sound of the toy stops, enabling the child to form the awareness that there is a connection between correctly using the child occupant restraint system and the execution terminal executing a specific operation plan. Over time, the child can develop the habit of actively using the child occupant restraint system.

[0118] Of course, the above-mentioned execution terminal may also include types of terminals that emit warning messages, such as a handheld alarm terminal 10 or a warning device. Thus, when there is a problem with a child using a child occupant restraint system, it can promptly notify the caregiver to check the usage of the child occupant restraint system, taking precautions and avoiding potential safety hazards caused by non-compliant use of the child occupant restraint system.

[0119] The communication connection method between the signal receiving end of the above-mentioned execution terminal and at least one signal transmitting component includes wireless communication connection and wired communication connection. Among them, the wired communication connection method has low cost and high reliability; and the wireless communication connection method enables the signal transmitting component and the execution terminal of the present application to be unaffected by the layout of lines, and thus has a more flexible layout method, which can adapt to signal transmitting components and execution terminals with diverse installation positions and is applicable to different types of execution terminals.

[0120] As Figures 1 to 12 shown, in some embodiments, the seat belt 1 further includes:

[0121] A first shoulder strap 11;

[0122] A second shoulder strap 12; and

[0123] A shoulder strap fixator 2, including a first cover body 21 connected to the first shoulder strap 11 and a second cover body 22 connected to the second shoulder strap 12, and the first cover body 21 and the second cover body 22 can be buckled and connected to each other;

[0124] Among them, the at least one signal transmitting component includes:

[0125] A first signal transmitter 32, disposed inside the first cover body 21, including a communication driving circuit, capable of emitting a preset command signal when the connection state between the first cover body 21 and the second cover body 22 changes.

[0126] As Figures 2 to 4 shown, in some embodiments, the detection component includes:

[0127] The convex post 222 is fixedly arranged on the second cover body 22, and the height direction thereof faces the first cover body 21;

[0128] The permanent magnet 223 is fixedly arranged at one end of the convex post 222 close to the first cover body 21; and

[0129] The first reed switch 322 is arranged inside the first cover body 21 and is connected to the communication driving circuit of the first signal transmitter 32 through wire communication. When the magnetic flux change of the first reed switch 322 itself reaches a set value, the communication driving circuit of the first signal transmitter 32 can be triggered to be turned on;

[0130] Wherein, when the first cover body 21 and the second cover body 22 are buckled with each other, the permanent magnet 223 can change the magnetic flux change of the first reed switch 322 to the set value.

[0131] In order to improve the service life of the detection component, the present disclosure adopts a non-contact detection component formed by arranging the permanent magnet 223 on the convex post 222 and arranging the first reed switch 322 inside the first cover body 21, thereby reducing the contact wear between the components in the trigger component and improving the stability of state detection.

[0132] In some embodiments, when the first cover body 21 and the second cover body 22 are buckled with each other, the permanent magnet 223 does not contact the first reed switch 322.

[0133] In some embodiments, when the first cover body 21 and the second cover body 22 are buckled with each other, the minimum distance between the permanent magnet 223 and the first reed switch 322 is configured as follows: when the permanent magnet 223 and the first reed switch 322 move from any distance when the first cover body 21 and the second cover body 22 are not buckled to the minimum distance, the magnetic flux change of the first reed switch 322 caused by the permanent magnet 223 is greater than the critical trigger magnetic flux of the first reed switch 322.

[0134] Reed switches of different specifications have different magnetic flux change thresholds. For the permanent magnet 223 and the reed switch in some embodiments of the present disclosure, when the magnetic flux density of the permanent magnet 223 is greater than 5 gauss compared to the reed switch, during the process of the permanent magnet 223 approaching the reed switch, the reed switch can be triggered to be turned on through its own magnetic field.

[0135] In some embodiments, the detection component includes:

[0136] The convex post 222 is fixedly arranged on the second cover body 22, and the height direction thereof faces the first cover body 21; and

[0137] A push-button switch 321 is provided on the first signal transmitter 32 and is connected to the communication drive circuit of the first signal transmitter 32 by wire communication. When pressed, it can trigger the communication drive circuit of the first signal transmitter 32 to turn on;

[0138] Wherein, when the first cover 21 and the second cover 22 are buckled together, the convex column 222 can abut against the push-button switch 321.

[0139] The combination of the push-button switch 321 and the convex column 222 realizes the function that the first signal transmitter 32 emits a command signal when the first cover 21 and the second cover 22 are connected, and stops emitting the command signal when the first cover 21 and the second cover 22 are separated. Furthermore, the linkage between the correct use of the child occupant restraint system and the playback behavior of the audio and video player is realized.

[0140] In some embodiments, the child occupant restraint system further includes:

[0141] A fixed seat 31 is clamped in the inner cavity of the first cover 21, and a limiting column 311 is provided on the surface facing the outside of the first cover 21;

[0142] Wherein, the first signal transmitter 32 is embedded in the limiting column 311, and when the fixed seat 31 is arranged in the inner cavity of the first cover 21, it is attached to the inner wall surface of the first cover 21.

[0143] The first signal transmitter 32 is installed between the fixed seat 31 and the first cover 21 by the limiting column 311 on the fixed seat 31. The limiting column 311 can not only prevent the first signal transmitter 32 from shaking between the fixed seat 31 and the first cover 21, but also determine the distance between the fixed seat 31 and the first cover 21, thus playing a protective role for the signal generator.

[0144] In some embodiments, the child occupant restraint system further includes:

[0145] A partition film is laid between the first signal transmitter 32 and the fixed seat 31 to prevent the first signal transmitter 32 from leaking electricity; and

[0146] A start switch is provided on one side of the first signal transmitter 32 close to the first cover 21;

[0147] Wherein, the first cover 21 is also provided with an opening so that the start switch extends out of the outer surface of the first cover 21 from the opening.

[0148] The setting of the partition film can, on the one hand, prevent the leakage of the signal transmitter from endangering the child occupant restraint system and coming into close contact with the child wearing the shoulder strap retainer 2, and on the other hand, prevent the liquid from invading the signal transmitter due to the child's sweating or spilled drinks, thus causing damage.

[0149] The signal transmitter is provided with a switch, which can enable the signal generator to enter the working state or the deactivated state in a controlled manner. Thus, during the period when the child occupant restraint system is not in use, the signal transmitter can be turned off through the switch to save power and obtain a longer battery life.

[0150] In some embodiments, in order to facilitate the signal output and heat dissipation of the signal transmitter located inside the first cover 21, the first cover 21 is further provided with a plurality of through holes 212 on the wall surface in contact with the first signal transmitter 32, and the plurality of through holes 212 are arranged in a circular array centered on the opening.

[0151] In some embodiments, in order to detachably connect the first cover 21 and the second cover 22 to each other, the first cover 21 includes two symmetrically arranged card slots 211, the second cover 22 includes two symmetrically arranged hooks 221, and the two hooks 221 can be deformed towards each other to be inserted into or disengaged from the two card slots 211, so that the first cover 21 and the second cover 22 are snapped together or disengaged from each other.

[0152] In some embodiments, the first cover 21 and the second cover 22 are respectively provided with long strip-shaped strap holes 4 for passing through the first shoulder strap 11 and the second shoulder strap 12, and the first cover 21 and the second cover 22 further include:

[0153] Shoulder strap installation inclined slots 41 are opened on the outer edge of the strap hole 4, the depth direction of the slots faces the connection midpoint of the first cover 21 and the second cover 22, and penetrates through the first cover 21 or the second cover 22;

[0154] Among them, the shoulder strap installation inclined slot 41 divides the outer edge of the strap hole 4 into a shorter first section and a longer second section, and the first section is close to the connection midpoint of the first cover 21 and the second cover 22.

[0155] The setting of the shoulder strap installation inclined slot 41 facilitates the insertion, installation, disassembly and use of the shoulder strap, and has more mobility than the traditional shoulder strap retainer 2. And the shoulder strap installation inclined slot 41 inclines towards the shorter first section, so that the shoulder strap is not easily disengaged from the shoulder strap installation inclined slot 41, ensuring the restraint effect of the child occupant restraint system.

[0156] As Figures 13 to 15 shown, in some embodiments, the seat belt 1 of the child occupant restraint system further includes:

[0157] The seat belt metal buckle 61; and

[0158] The seat belt socket 62;

[0159] Wherein, the at least one signal transmitting component includes:

[0160] The second signal transmitter 64, fixedly arranged on the seat belt socket 62, includes a communication driving circuit, and can emit a preset command signal when the connection state between the seat belt metal buckle 61 and the seat belt socket 62 changes.

[0161] In some embodiments, the detection component includes:

[0162] The second reed switch 63, fixedly arranged on the seat belt socket 62, is wired and communicatively connected to the communication driving circuit of the second signal transmitter 64, and can trigger the communication driving circuit of the second signal transmitter 64 to be turned on when its own switch is closed;

[0163] Wherein, when the seat belt metal buckle 61 is inserted into the seat belt socket 62 to the bottom, the seat belt metal buckle 61 can increase the magnetic flux of the second reed switch 63 and reach the switch closing condition of the second reed switch 63.

[0164] Through the second reed switch 63, it can be judged whether the seat belt metal buckle 61 is inserted into the seat belt socket 62, so as to ensure that when a child uses a child occupant restraint system, the seat belt 1 of the child occupant restraint system is correctly inserted in place.

[0165] In order to ensure the wired communication connection between the second reed switch 63 and the communication driving circuit of the second signal transmitter 64, in some embodiments, the second reed switch 63, the communication driving circuit of the second signal transmitter 64, the magnet and the battery are packaged as an independent package, and the independent package is accommodated in the inner cavity of the seat belt socket 62 or is attached to the outside of the seat belt socket 62.

[0166] Existing motor vehicles usually only give an active alarm for the insertion situation of the seat belt 1 of the front row seats, while the child occupant restraint system needs to be set in the back row of the motor vehicle. In view of this, based on the independent package that can be attached to the outside of the seat belt socket 62 in this application, it can not only be set on the outside of the seat belt socket 62 of the child occupant restraint system, but also can be set on the outside of the seat belt socket corresponding to the seat where the child occupant restraint system is installed in the back row of the motor vehicle, so as to detect its insertion state when the motor vehicle seat belt also plays a role in restraining the child and the child occupant restraint system.

[0167] Such as Figures 16 to 17As shown, in some embodiments, a shoulder strap sheath 71 is further provided at the force-bearing part of the seat belt 1 for restraining a child occupant. The at least one signal transmitting component includes:

[0168] A third signal transmitter 72, disposed within the shoulder strap sheath 71, includes a communication driving circuit and is capable of emitting a preset command signal when the force-bearing state of the seat belt 1 changes;

[0169] The at least one detection component includes:

[0170] A pressure sensor 73, disposed within the shoulder strap sheath 71, is used to measure the pressure exerted on the seat belt 1 by the child occupant and is wired to communicate with the communication driving circuit of the third signal transmitter 72. It can turn on the communication driving circuit when the pressure measurement value is within a first pressure range and turn off the communication driving circuit when it is not within the first pressure range.

[0171] The shoulder strap sheath 71 is generally disposed in the area where the first shoulder strap 11 and the second shoulder strap 12 of the child occupant restraint system contact the child's shoulders. It uses soft filling materials and a larger contact area than the shoulder straps to improve the comfort of the child using the child occupant restraint system and reduce the impact intensity on the child in case of an accident. Therefore, in this application, by setting the pressure sensor 73 within the shoulder strap sheath 71, the contact situation between the child's shoulders and the shoulder straps is continuously detected, so as to emit a preset command signal in case the child unbuckles the shoulder strap or the shoulder strap falls off, etc., to remind the child or the caregiver to adjust the use of the shoulder strap in time.

[0172] As Figure 18 shown, in some embodiments, the seat belt 1 is connected to the seat body 5 through a buckle 81. The at least one signal transmitting component includes:

[0173] A fourth signal transmitter 83, disposed on the seat body 5, near the connection of the seat belt 1 to the seat body 5 or the part where the seat belt 1 passes through, includes a communication driving circuit and is capable of emitting a preset command signal when the restraint state of the seat belt 1 changes;

[0174] The at least one detection component includes:

[0175] A tension sensor 82, disposed at the connection of the seat belt 1 to the seat body 5 or the part where the seat belt 1 passes through, is used to measure the tension of the buckle 81 and is wired to communicate with the communication driving circuit of the fourth signal transmitter 83. It can turn on the communication driving circuit when the tension measurement value is within a second tension range and turn off the communication driving circuit when it is not within the second tension range.

[0176] The second tension range can be set to a normal tension range between the seat belt 1 and the seat body 5. Thus, when an abnormal connection occurs between the seat belt 1 and the seat body 5 in the child occupant restraint system, or when the child occupant restraint system swings or shakes abnormally, the connection between the seat belt 1 and the seat body 5 will be subjected to a greater tension.

[0177] Therefore, the present application detects the tension between the seat belt 1 and the seat body 5 by means of the tension sensor 82 arranged on the buckle 81, and can send out a preset command signal when there is an abnormal connection between the seat belt 1 and the seat body 5 in the child occupant restraint system, or when the child occupant restraint system swings or shakes abnormally, so as to remind the child or caregiver to make timely adjustments.

[0178] like Figures 19 to 20 As shown, in some embodiments, the child occupant restraint system is connected to the motor vehicle via an ISOFIX connector 91, and the at least one signal transmitting component includes:

[0179] A fifth signal transmitter 93, which is disposed on the seat body 5, close to the connection portion between the seat body 5 and the motor vehicle, comprises a communication drive circuit, and is capable of sending a preset command signal when the connection state between the ISOFIX connector 91 and the motor vehicle changes;

[0180] The at least one detection component comprises:

[0181] The Hall sensor 92 is arranged in the ISOFIX connector 91, detects the connection status between the ISOFIX connector 91 and the motor vehicle based on the change of magnetic flux, and is connected to the communication drive circuit of the fifth signal transmitter 93 by wired communication. The communication drive circuit can be turned on when the ISOFIX connector 91 is connected to the motor vehicle, and can be disconnected when the ISOFIX connector 91 is not connected to the motor vehicle.

[0182] When the metal clip on the motor vehicle is embedded in the ISOFIX connector 91, the Hall sensor 92 can detect the change in magnetic flux caused by the insertion of the metal clip, and then the connector communication drive circuit, thereby realizing uninterrupted monitoring of the connection status of the ISOFIX connector 91 and the motor vehicle.

[0183] In some embodiments, the at least one signal transmitting component is configured to: trigger its own communication driving circuit to be turned on and then send a command signal when the working state of the child occupant restraint system undergoes a set change; trigger its own communication driving circuit to be turned off and then stop sending a command signal when the working state of the child occupant restraint system does not undergo a set change.

[0184] In some embodiments, the at least one signal transmitting component is further configured to: be in a powered-off sleep state after being turned on; emit a preset command signal after its communication driving circuit has been turned on for more than a second set duration; and re-enter the powered-off sleep state when the communication driving circuit fails to be re-connected within a first set duration after stopping emitting the command signal.

[0185] The normal state of the at least one signal transmitting component is set to the powered-off sleep state, so that once the corresponding detection component is triggered, the at least one signal transmitting component can emit a corresponding command signal with higher timeliness. When the communication circuit fails to be re-connected within the first set duration after stopping emitting the command signal, the at least one signal transmitting component then re-enters the powered-off sleep state and waits to be woken up after the next detection component is triggered.

[0186] Furthermore, the applicant has found through research that: in the current market, for the technical solutions where the child occupant restraint system is linked with the smart terminal, after the smart terminal receives the signal sent by the child occupant restraint system, it is still necessary to drive the application program on the smart terminal to work. For example, the linkage problem between the smart terminal and the child occupant restraint system is solved through APP application programs on mobile phones or tablets. However, the current smart terminal operating systems are all in the process of continuous upgrade and optimization. Therefore, all the APP application programs pre-deployed on the smart terminal need to be patched and modified accordingly to keep the APP running in a good state all the time. And continuously updating the APP application programs along with the upgrade of the smart terminal operating system has become a major pain point for the industry and users.

[0187] In view of this, in some embodiments, the at least one signal transmitting component is wirelessly communicatively connected to the execution terminal based on Bluetooth technology. The command signal emitted by the at least one signal transmitting component includes a set of preset Bluetooth commands, and the Bluetooth commands are compiled according to the Bluetooth HID protocol. When the execution terminal is Bluetooth paired with the at least one signal transmitting component, the Bluetooth commands can trigger the execution terminal to execute a preset operation plan.

[0188] As a short-range wireless communication connection method, Bluetooth connection can be applied to the limited space environment inside the vehicle at low cost and is not easily affected by the strength of external signals. When the motor vehicle is driving in an area with poor network signals, it can still stably achieve the wireless communication connection between the signal transmitting component and the audio-video player, with a low implementation cost and a wide range of installed and covered devices.

[0189] In some embodiments, the at least one signal transmitting component is further configured to: emit a Bluetooth signal after being turned on for the execution terminal within the Bluetooth signal reception range to search; respond to the password input by the execution terminal, establish a Bluetooth connection with the execution terminal and pair with each other; and when there is no Bluetooth pairing, automatically establish a Bluetooth connection with the execution terminal when the execution terminal that has already established a pairing is within the Bluetooth signal reception range.

[0190] The wireless communication connection between the execution terminal and the at least one signal transmitting component adopts a common Bluetooth connection method. Taking a smart phone as an example: when the smart phone first encounters the at least one signal transmitting component that is powered on and activated, it can actively search for surrounding Bluetooths and establish a connection by manually inputting a set password. After the first connection is successful, as long as the smart phone turns on the Bluetooth function, it can automatically connect to the at least one signal transmitting component that is powered on and activated. When the Bluetooth connection between the smart phone and the at least one signal transmitting component fails, repeat the steps of the first Bluetooth connection to re - establish the Bluetooth connection between the smart phone and the at least one signal transmitting component.

[0191] In some embodiments, the at least one signal transmitting component and the execution terminal are wirelessly communicatively connected through a radio frequency chip, and the radio frequency chip is embedded with an instruction set for controlling the execution terminal to execute a preset operation scheme.

[0192] In some embodiments, the execution terminal includes:

[0193] A smart phone or a tablet computer, disposed on the headrest or the rear part of the backrest of the front row seat directly opposite the child occupant restraint system, Bluetooth - connected to the at least one signal transmitting component, and configured to: play a preset audio - video file when receiving at least one of the instruction signals, pause playing the preset audio - video file when at least one of the instruction signals is interrupted, and continue playing the preset audio - video file when the instruction signal is received again within a first set duration after at least one of the instruction signals is interrupted.

[0194] According to traffic regulations, a child safety seat can only be deployed in the rear seat of a motor vehicle. Therefore, the audio - video player can be set on the headrest or the rear part of the backrest of the front row seat directly opposite the child occupant restraint system according to the sitting height of the child.

[0195] Among various types of audio and video players, smartphones are preferred because they are extremely popular, people carry them around, and Bluetooth is a standard configuration of current smartphones, which can save implementation costs. For smartphones, a small program can be developed in mobile applications with a high popularity, such as the small programs on the WeChat platform, to play audio and video files, thereby avoiding compatibility issues of different smartphones and eliminating the need for operating system upgrades, reducing maintenance costs.

[0196] An electronic tablet with Bluetooth receiving function can be used as an upgraded alternative to a smartphone. Since the display screen of the electronic tablet is larger, it can have a better video effect than a smartphone. At the same time, if the electronic tablet does not install WeChat, an application program based on smartphones rather than the WeChat platform can be developed to manage and play audio and video files.

[0197] The Bluetooth audio and video playback instructions compiled based on the Bluetooth HID protocol can trigger the start or stop of the audio and video playback program in the audio and video player, avoiding the incompatibility problems of pre-deployed APP application programs with smartphones or computer tablets on different platforms, and being able to maintain a smooth wireless communication connection between the audio and video player and the at least one signal transmitting component without being affected by the continuous updates of the operating systems of smartphones or computer tablets.

[0198] With the continuous improvement of the degree of automotive automation and informatization, in some embodiments, the execution terminal includes:

[0199] A motor vehicle multimedia display screen, which is Bluetooth-connected to the at least one signal transmitting component, can display the detection data of the at least one detection component, and is configured to: play a preset audio and video file when receiving at least one of the command signals, pause playing the preset audio and video file when at least one of the command signals is interrupted, and continue playing the preset audio and video file when the command signal is received again within the first set duration after at least one of the command signals is interrupted.

[0200] Similarly, in some embodiments, the execution terminal includes:

[0201] A dash cam display, which is wirelessly connected to the at least one signal transmitting component through Bluetooth or a wireless radio frequency chip, and is configured to: based on an embedded RTOS system or LINUX system, through an embedded playback program, control the playback of audio and video pre-stored in the dash cam display in response to received Bluetooth instructions.

[0202] As audio and video players, the above-mentioned smartphones / tablet computers, motor vehicle multimedia displays, and dash cam displays take into account that infants and young children have difficulty concentrating for a long time and are very sensitive to audio and video effects. Therefore, in response to the resistance and crying behavior of infants and young children when sitting in a child restraint system, this application continuously attracts the attention of infants and young children by playing their favorite audio and video files, so that infants and young children no longer focus on being separated from their parents' arms or being restrained by the child restraint system, thereby making infants and young children use the child seat more obediently.

[0203] In addition, considering that if a child requests to unfasten the child restraint system, this application stops sending command signals through the detection component set at the fastening part of the seat belt 1 and / or the stress part where the seat belt 1 restrains the child occupant, so that the audio and video playback program pauses the playback of the audio and video file in the playing state. Thus, infants and young children can realize the causal relationship between unfastening the safety restraint of the child restraint system and the stop of the audio and video file playback. At this time, in order to continue watching the audio and video file, children will be more inclined to use the child restraint system as required.

[0204] Over time, based on the positive feedback between the correct behavior of using the child restraint system and the behavior of playing audio and video files, infants and young children are likely to form a good travel habit of being willing to use the child restraint system: during travel, they actively sit in the child restraint system and require the correct use of the child restraint system, thereby not only ensuring the safety of children in motor vehicles, but also reducing crying and improving the travel experience of parents.

[0205] Regarding the files played by the audio and video player, in addition to cartoons that children generally like, knowledge about safe travel and the correct use of child restraint systems can also be pre-stored in the audio and video player in the form of animations that children love to see and hear. Cartoons and safety knowledge can be played alternately, so that children can not only maintain their interest in audio and video files, but also receive education on safe travel knowledge in real travel scenarios.

[0206] The audio and video files can be pre-stored in the audio and video player and played when a play instruction is received, or can be downloaded in real time from an audio and video platform online by the audio and video player. The former has no requirement for network signals, while the latter requires a certain network signal strength, but the optional audio and video types are more abundant, so it can better meet the preferences of children.

[0207] During use, the audio - video file can be in a pre - play state to improve the response sensitivity to the detection component. Among them, the pre - play state of the audio - video file means that for different audio - video players, it is necessary to first enter the playback interface in a specific manner and call out the audio - video file to be played. When at least one signal - emitting component emits a preset instruction signal for audio - video playback, it can enter the playback state.

[0208] Above, from the perspective of the positive feedback formed between correctly using a child seat and playing an audio - video file, the structural form and implementation principle of this application have been introduced. Considering that stopping the playback of the audio - video file may not ensure that the child uses the child seat in the correct way, this application further considers sending corresponding warning messages to the adult taking care of the child after the working state of the child restraint system changes.

[0209] In some embodiments, the execution terminal includes:

[0210] A detachable display terminal, which can be hooked to internal functions of a motor vehicle or a car key, is wirelessly communicatively connected to at least one signal - emitting component through a radio - frequency chip, and is configured to emit sound, light, and vibration alarm information when it fails to receive at least one of the instruction signals again within a first set duration after at least one of the instruction signals is interrupted.

[0211] The detachable display terminal is a device integrated with or fixedly connected to the car key of a motor vehicle. Due to its close connection with the car key, the driver of the motor vehicle will always carry this detachable display terminal with him, so as to give an alarm when the shoulder strap fixator 2 of the child restraint system is disconnected.

[0212] Compared with a smart phone, the detachable display terminal has a longer standby time. Therefore, it can retain the alarm capabilities of sound, light, and vibration in special cases where the smart phone runs out of power and shuts down, or the smart phone is set to mute, so as to ensure that the alarm information can be timely transmitted to the adult taking care of the child.

[0213] In order to prevent leaving the child in the motor vehicle, in some embodiments, the detachable display terminal is a handheld alarm terminal 10. The handheld alarm terminal 10 further includes a distance determination module, which is configured to emit sound, light, and vibration alarm information when the distance between itself and at least one signal - emitting component exceeds a set distance.

[0214] It should be noted that the wireless receivers in the embodiments of the present application are divided into three categories. The first category is pre-installed with Bluetooth, and typical representatives include smartphones / tablet computers (IPAD) and automotive multimedia display systems. The second category is not pre-installed with Bluetooth but is built-in with a wireless radio frequency chip, and typical representatives include detachable display terminals. The third category may be pre-installed with Bluetooth or may also be built-in with a wireless radio frequency chip, including dash cam monitors.

[0215] For those skilled in the art, the receiving end and the sending end for wireless transmission and reception of information are paired with each other: if the receiving end is Bluetooth, the transmitting end is Bluetooth; if the receiving end is a wireless radio frequency chip, the transmitting end is a wireless radio frequency chip of the same frequency. However, there are also multiple ways to implement the function of wireless transmission and reception of information, such as infrared transmission, ultrasonic transmission, etc. The two preferred ways of wireless transmission and reception of information in the present application are Bluetooth and wireless radio frequency chips because these two transmission methods have strong obstacle bypassing ability and stable transmission effect.

[0216] Furthermore, when a smartphone or an automotive multimedia display system is selected as the wireless transmission receiving end of the present application, the reasons for only preferring the Bluetooth wireless transmission method are as follows (hereinafter, the smartphone is used as an example for discussion, and the automotive multimedia display system is similar to the smartphone): when a smartphone is selected as the receiving terminal, since the smartphone is a standardized product in the general sense and is not allowed to be randomly modified in system components, and the Bluetooth receiving module is a standard configuration of all smartphones, and in addition, smartphones are pre-installed with third-party provided audio and video players, such as Tencent Video, iQIYI, etc.

[0217] Therefore, the present application can utilize the Bluetooth standard configuration and pre-installed audio and video players of the smartphone itself at a relatively low cost, set the transmitting end to the Bluetooth protocol version module currently mainly used by smartphones, so that the Bluetooth module can establish Bluetooth wireless communication with the smartphone according to the Bluetooth standard protocol of international communication.

[0218] After the Bluetooth module of at least one signal transmitting component communicates with the Bluetooth module standard configuration of the smartphone, the key to the present invention technology is how to make the audio and video player pre-installed on the smartphone, after being in a ready-to-play state, respond to the control of the audio and video instruction set preset by the Bluetooth transmitting end.

[0219] The currently common solution is to customize a special control application program (APP) that needs to be separately installed on the smartphone. Through this customized control application program, the communication between the Bluetooth of the transmitting end and the Bluetooth of the receiving end is managed and coordinated, and further, the control of the smartphone is realized based on the detection status signal of the transmitting end. The disadvantage of this APP method is that it needs to be frequently maintained, updated, and upgraded to adapt to the upgrade environment of the smartphone operating system, with high operation and maintenance costs and poor experience of not being able to be upgraded in a timely manner.

[0220] In response to this, the technical solution of this application is as follows: adopt the Bluetooth HID (The Human Interface Device) protocol, that is, the protocol, features, and usage procedures of Bluetooth in human interface devices. Deploy this instruction set in the Bluetooth transmitter. The Bluetooth transmitter transmits instructions conforming to the Bluetooth HID protocol to the smartphone receiver according to different status signals detected by the detection component. After the Bluetooth module on the smartphone side receives the instructions triggered by various detection status signals, it will, through the Bluetooth module on the smartphone side, call and trigger the audio and video player in the standby state on the smartphone side to play the preset audio and video through the HID protocol instructions.

[0221] In addition, when the smartphone is not selected as the wireless transmission receiver of this application, it is necessary to consider a solution that meets more usage scenarios of consumers: configure a dedicated intelligent terminal to display the detection signals of the detection end and implement the control function of audio and video.

[0222] Using a dedicated intelligent terminal has a higher hardware cost than using an off-the-shelf smartphone as the receiver. Configuring a dedicated intelligent terminal requires a simple operating system and display and sound effect driver programs. For example, a detachable handheld terminal, a widely used driving recorder display, etc. can all be optimized to have the functions of displaying detection information, sound effect alarm, and controlling the playback of preset audio and video.

[0223] Both using a Bluetooth module for wireless transmission and using a wireless radio frequency chip to achieve wireless transmission of electrical signals are feasible and have considerable technical stability. However, the cost of choosing the wireless radio frequency chip technology is lower than that of the Bluetooth module. Therefore, the wireless radio frequency chip is the preferred solution for wireless signal transmission of the configured dedicated intelligent terminal.

[0224] The technical idea of using a Bluetooth module to transmit detection signals for the configured dedicated intelligent terminal is the same as that of using a smartphone as the receiving terminal and compiling an instruction set that conforms to the Bluetooth HID protocol. However, the technical solution for implementing wireless transmission control of audio and video playback using a wireless radio frequency chip is different:

[0225] The detachable handheld terminal can be installed in the dashboard area of the front driver's seat in a motor vehicle (for the front guardian to observe the detection data), or it can be installed at the back of the headrest of the front seat opposite to the rear occupant (for the occupant to watch the preset program, but the playback is controlled by the detection status), or it can be hooked to the motor vehicle key and taken away with the person (to enable the handheld terminal to have the condition of loss alarm), and the usage scenarios are very rich.

[0226] The display end of the driving recorder can be installed on the front-row rearview mirror of a motor vehicle, allowing the recording lens on the back of the display end to record the road conditions data in the forward direction of driving. It can also be installed at the rear of the front-row seat headrest facing the rear passengers, and can switch to display the detection data of the connection state of the chest buckle of the safety seat belt 1, enabling the rear child passengers to watch the audio and video programs controlled by the detection state.

[0227] Since both the detachable handheld end and the display end of the driving recorder use an embedded micro operating system and embed the audio and video storage and playback programs, the compiled program has been finalized and burned into the internal of the wireless radio frequency chip. As long as there are stable digital display and audio and video storage and playback functions of the management and control terminal, there is no need to modify them. The usage scenario is stable and does not require frequent maintenance and upgrade.

[0228] Under such stable operating scenario conditions, the control instructions do not need to be compiled using the Bluetooth HID protocol method. Instead, according to the transmission signal characteristics of the wireless radio frequency, compile the digital display format and the instruction set for controlling the embedded system or the embedded audio and video playback program that need to be achieved with the detection state. Deploy the control playback instructions of the audio and video playback program at the wireless transmitting end, and trigger through the detection signal state. Deploy the playback instructions of the audio and video playback program at the wireless receiving end, and realize the wireless digital display and the management and control of audio and video playback through the wireless transmission signal of the radio frequency chip.

[0229] For the global market, the system compatibility is more complex. In order to minimize the frequency of daily updates and maintenance as much as possible and enable the users of the wireless receiving end to have a stable experience, adopting the internationally common underlying transmission method is the best global solution with the best compatibility.

[0230] To address this technical issue, the wireless receiving end with built-in Bluetooth does not need to specifically design an APP. Instead, it uses a third-party shared APP and controls the playback of audio and video with a more stable underlying wireless Bluetooth HID protocol instruction set. For the wireless receiving end without built-in Bluetooth, a customized audio and video player needs to be developed, and the wireless transmission of the control instruction set is realized through the built-in wireless radio frequency chip. Since the management system of this wireless receiving end is relatively fixed, this control instruction set is also relatively stable and does not require frequent maintenance.

[0231] Deploying the management system in the wireless receiving end in an embedded manner as described above is what is commonly referred to as embedded software. Embed the operating system, drivers, and audio and video playback tool software in the hardware. Its associated relationship in the chip industry is reflected as: chip design and manufacturing → embedded software → embedded electronic device development and manufacturing. That is, the compiled system software and tool software are solidified in the chip by burning. Once it is detected to meet the set functions, it will no longer be updated and maintained.

[0232] The child occupant restraint system in the above disclosure refers to a device with a webbing or corresponding soft component with a protective buckle, an adjustment device, a connection device, and an auxiliary device, and can be stably placed on a motor vehicle. Its design is to reduce the harm to the wearer in the event of a vehicle collision or sudden deceleration by restricting the movement of the wearer's body;

[0233] In some embodiments, the at least one signal transmitting component is in wired communication connection with the at least one detection component in a one-to-one correspondence, and the signal transmitting component is in wireless communication connection with the execution terminal in a one-to-one or one-to-many manner. One or more of the execution terminals are configured to: execute a preset operation plan according to the corresponding one instruction signal.

[0234] In some embodiments, the at least one signal transmitting component is in wired communication connection with the at least one detection component in a one-to-one correspondence, and at least one of the signal transmitting components is in wireless communication connection with the at least one execution terminal in a many-to-one or many-to-many manner. One or more of the execution terminals are configured to: execute a preset operation plan according to the corresponding multiple instruction signals.

[0235] When the signal transmitting component is in wireless communication connection with the execution terminal in a one-to-one manner, for example, the wireless communication connection between the shoulder strap holder 2 and the smart phone, the linkage between the buckling of the shoulder straps and the playing of audio and video files on the smart phone can be realized; another example is the wireless communication connection between the shoulder strap cover 71 on the seat belt 1 and the handheld alarm terminal 10, which can realize the linkage between the pressure condition on the shoulder strap and the triggering of the handheld alarm.

[0236] When the signal transmitting component is in wireless communication connection with the execution terminal in a one-to-many manner, it can be that the shoulder strap holder 2 is simultaneously in wireless communication connection with the smart phone and the handheld alarm terminal 10, or the shoulder strap cover 71 on the seat belt 1 is simultaneously in wireless communication connection with the smart phone and the handheld alarm terminal 10. The execution logic of one-to-many is similar to that of one-to-one, and will not be elaborated here.

[0237] When the signal transmitter is in wireless communication connection with the execution terminal in a many-to-one manner, taking the wireless communication connection between the audio and video player and the first signal transmitter 32, the second signal transmitter 64, the third signal transmitter 72, and the fourth signal transmitter 83 as an example for further illustration:

[0238] The audio and video player can be configured to:

[0239] When receiving the instruction signals from the first signal transmitter 32, the second signal transmitter 64, the third signal transmitter 72, and the fourth signal transmitter 83, play a preset audio and video file;

[0240] When the command signal of the first signal transmitter 32, the second signal transmitter 64, the third signal transmitter 72 or the fourth signal transmitter 83 is interrupted, the playback of the preset audio-visual file is paused;

[0241] When the command signal is received again within the first set duration after the command signal of the first signal transmitter 32, the second signal transmitter 64, the third signal transmitter 72 or the fourth signal transmitter 83 is interrupted, the playback of the preset audio-visual file continues.

[0242] It can be seen that only when the first signal transmitter 32, the second signal transmitter 64, the third signal transmitter 72 and the fourth signal transmitter 83 all emit command signals, that is, when multiple key nodes of the shoulder belt fixator 2 of the child occupant restraint system and the restraint safety belt 1 are in the correct connection state, the audio-visual player will continuously play the audio-visual file. As long as the signal of one of the signal transmitters is interrupted, the audio-visual file will stop playing.

[0243] Similarly, in some embodiments, the handheld alarm terminal 10 can be configured to: emit sound, light, and vibration alarm information after the first set duration when the command signal of the first signal transmitting component 3, the second signal transmitting component, the third signal transmitting component or the fourth signal transmitting component is interrupted and the command signal is not received again.

[0244] In addition, it can also be that the signal transmitter is wirelessly communicatively connected to the execution terminal in a many-to-many manner: the two signal transmitting ends of the shoulder belt fixator 2 and the shoulder belt sheath 71 on the safety belt 1 are simultaneously wirelessly communicatively connected to the smart phone and the handheld alarm terminal 10 to form a combined application between the detection component and the execution terminal.

[0245] The seat body 5 in the above-mentioned disclosed content, also simply referred to as the seat, is a component of the child occupant restraint system structure, and its seating position can accommodate a child;

[0246] The safety belt 1 in the above-mentioned disclosed content is a child restraint part composed of a webbing, a buckle, an adjusting device and a connecting device;

[0247] The first shoulder belt 11 and the second shoulder belt 12 in the above-mentioned disclosed content, also referred to as shoulder restraint belts, are webbings used to restrain the upper torso of a child;

[0248] The shoulder belt fixator 2 or the metal buckle and socket 62 in the above-mentioned disclosed content, which are arranged at the buckling part of the safety belt 1, are also collectively referred to as the buckle, and are devices that can restrain the child by the restraint system or the restraint system can be restrained by the vehicle body structure and can be quickly opened;

[0249] The shoulder strap cover 71 in the above-mentioned disclosure is located at the force-bearing part where the safety belt 1 restrains the child occupant and can be sleeved on the webbing. The webbing is a component of a flexible restraint belt for transmitting force and includes a waist belt, a shoulder restraint belt, a crotch restraint belt, a child restraint belt, a child full-back restraint belt, and a Y-shaped belt. Therefore, the shoulder strap cover 71 can be specifically arranged on the shoulder restraint belt. Based on this, those skilled in the art can also correspondingly arrange a waist belt cover, a crotch cover, a child restraint belt cover, a child full-back restraint belt cover, and a Y-shaped belt cover according to actual needs.

[0250] The buckle 81 in the above-mentioned disclosure is arranged at the part where the safety belt 1 is connected to the seat body 5 or where the safety belt 1 passes through, and is also called a connecting device. It is a component of the child occupant restraint system and includes safety components that can be directly or indirectly connected to the vehicle body structure through the vehicle seat to firmly restrain the child.

[0251] The ISOFIX connector 91 in the above-mentioned disclosure is arranged at the connection part between the seat body 5 and the motor vehicle, and is also called an ISOFIX fixing device, which is an internationally common device for connecting the child occupant restraint system to the vehicle. It includes two rigid fixing points on the vehicle, two corresponding rigid connecting devices on the child occupant restraint system, and a device for restricting the overturning of the child occupant restraint system.

[0252] So far, the embodiments of the present disclosure have been described in detail. To avoid obscuring the concept of the present disclosure, some details well known in the art have not been described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein based on the above description.

[0253] Although some specific embodiments of the present disclosure have been described in detail by way of examples, those skilled in the art should understand that the above examples are only for illustration and not for limiting the scope of the present disclosure. Those skilled in the art should understand that the above embodiments can be modified or some technical features can be equivalently replaced without departing from the scope and spirit of the present disclosure. The scope of the present disclosure is defined by the appended claims.

Claims

1. A child occupant restraint system, characterized in that, comprising: a seat body (5) detachably connected to a motor vehicle; a safety belt connected to the seat body (5) and capable of restraining a child occupant inside the seat body (5) in a buckled state. The safety belt includes a first shoulder belt (11), a second shoulder belt (12), and a shoulder belt holder (2). The shoulder belt holder (2) includes a first cover body (21) connected to the first shoulder belt (11) and a second cover body (22) connected to the second shoulder belt (12), and the first cover body (21) and the second cover body (22) can be detachably and connectedly engaged with each other; at least one detection component disposed at a buckling part of the safety belt, a force-receiving part where the safety belt restrains the child occupant, a connection part between the safety belt and the seat body (5), and / or a connection part between the seat body (5) and the motor vehicle, for detecting the working state of the child occupant restraint system; at least one signal transmitting component in wired communication connection with the at least one detection component, for emitting a preset command signal when a set change occurs in the working state of the child occupant restraint system. The at least one signal transmitting component includes a first signal transmitter disposed inside the first cover body. The first signal transmitter includes a communication driving circuit capable of emitting a preset command signal when the connection state between the first cover body and the second cover body changes; an execution terminal including a signal receiving end communicatively connected to the at least one signal transmitting component, and the execution terminal is configured to execute a preset operation plan according to at least one of the command signals; and a fixing base (31) clamped in an inner cavity of the first cover body (21) and provided with a limiting post (311) on a surface facing the outside of the first cover body (21); wherein, the first signal transmitter (32) is embedded inside the limiting post (311) and abuts against an inner wall surface of the first cover body (21) when the fixing base (31) is disposed in the inner cavity of the first cover body (21).

2. The child occupant restraint system according to claim 1, characterized in that, the detection component includes: a convex post (222) fixedly provided on the second cover body (22) and having a height direction facing the first cover body (21); a permanent magnet (223) fixedly provided at one end of the convex post (222) close to the first cover body (21); and a first reed switch (322) disposed inside the first cover body (21) and in wired communication connection with a communication driving circuit of the first signal transmitter (32), capable of triggering the communication driving circuit of the first signal transmitter (32) to be turned on when its magnetic flux change reaches a set value; wherein, when the first cover body (21) and the second cover body (22) are engaged with each other, the permanent magnet (223) can change the magnetic flux change of the first reed switch (322) to the set value.

3. The child occupant restraint system according to claim 2, characterized in that, When the first cover (21) and the second cover (22) are buckled with each other, the permanent magnet does not contact the first reed switch.

4. The child occupant restraint system according to claim 3, characterized in that when the first cover (21) and the second cover (22) are buckled with each other, the minimum distance between the permanent magnet and the first reed switch is configured such that: when the permanent magnet and the first reed switch move from any distance when the first cover (21) and the second cover (22) are not buckled to the minimum distance, the change in magnetic flux of the first reed switch caused by the permanent magnet is greater than the critical trigger magnetic flux of the first reed switch.

5. The child occupant restraint system according to claim 1, characterized in that the detection assembly includes: a convex post (222) fixedly arranged on the second cover (22) and facing the first cover (21) in the height direction; and a push-button switch (321) arranged on the first signal transmitter (32), wired communication-connected to the communication driving circuit of the first signal transmitter (32), and capable of triggering the communication driving circuit of the first signal transmitter (32) to be turned on when pressed; wherein, when the first cover (21) and the second cover (22) are buckled with each other, the convex post (222) can abut against the push-button switch (321).

6. The child occupant restraint system according to claim 1, characterized in that it further includes: a partition film laid between the first signal transmitter (32) and the fixed seat (31) for preventing the first signal transmitter (32) from leaking electricity; and a start switch arranged on one side of the first signal transmitter (32) close to the first cover (21); wherein, the first cover (21) is further provided with an opening hole, so that the start switch extends out of the outer surface of the first cover (21) from the opening hole.

7. The child occupant restraint system according to claim 6, characterized in that the first cover (21) is further provided with a plurality of through holes (212) on the wall surface where the first signal transmitter (32) is attached, and the plurality of through holes (212) are arranged in an annular array centered on the opening hole.

8. The child occupant restraint system according to claim 1, characterized in that the first cover (21) includes two symmetrically arranged card slots (211), the second cover (22) includes two symmetrically arranged hooks (221), and the two hooks (221) can be deformed towards each other to be engaged with or disengaged from the two card slots (211), so that the first cover (21) and the second cover (22) are buckled with each other or disengaged.

9. The child occupant restraint system according to claim 1, characterized in that the first cover (21) and the second cover (22) are respectively provided with long strip-shaped strap holes (4) for threading the first shoulder strap (11) and the second shoulder strap (12), and the first cover (21) and the second cover (22) further include: A shoulder strap installation chute (41) is formed on the outer edge of the strap passing hole (4), and the depth direction of the chute faces the connection midpoint of the first cover body (21) and the second cover body (22), and penetrates through the first cover body (21) or the second cover body (22). Wherein, the shoulder strap installation chute (41) divides the outer edge of the strap passing hole (4) into a shorter first section and a longer second section, and the first section is close to the connection midpoint of the first cover body (21) and the second cover body (22).

10. The child occupant restraint system according to claim 1, characterized in that, the seat belt further includes: a seat belt metal buckle (61); and a seat belt socket (62); Wherein, the at least one signal transmitting component includes: a second signal transmitter (64) fixedly arranged in the seat belt socket (62), including a communication driving circuit, and capable of emitting a preset command signal when the connection state between the seat belt metal buckle (61) and the seat belt socket (62) changes.

11. The child occupant restraint system according to claim 10, characterized in that, the detection component includes: a second reed switch (63) fixedly arranged in the seat belt socket (62), and is wired and communicatively connected to the communication driving circuit of the second signal transmitter (64), and is capable of triggering the communication driving circuit of the second signal transmitter (64) to be turned on when its own switch is closed; Wherein, when the seat belt metal buckle (61) is inserted into the seat belt socket (62) to the bottom, the seat belt metal buckle (61) can increase the magnetic flux of the second reed switch (63) and reach the switch closing condition of the second reed switch (63).

12. The child occupant restraint system according to claim 11, characterized in that, the second reed switch (63), the communication driving circuit of the second signal transmitter (64), the magnet and the battery are packaged as an independent package, and the independent package is accommodated in the inner cavity of the seat belt socket (62) or is attached to the outside of the seat belt socket (62).

13. The child occupant restraint system according to claim 1, characterized in that, a shoulder strap cover (71) is further provided at the force-bearing part of the seat belt for restraining the child occupant, and the at least one signal transmitting component includes: a third signal transmitter (72) arranged in the shoulder strap cover (71), including a communication driving circuit, and capable of emitting a preset command signal when the force-bearing state of the seat belt changes; the at least one detection component includes: a pressure sensor (73) arranged in the shoulder strap cover (71), for measuring the pressure exerted on the seat belt by the child occupant, and is wired and communicatively connected to the communication driving circuit of the third signal transmitter (72), and is capable of turning on the communication driving circuit when the pressure measurement value is within a first pressure range and turning off the communication driving circuit when it is not within the first pressure range.

14. The child occupant restraint system according to claim 1, characterized in that, The seat belt is connected to the seat body (5) through a buckle (81), and the at least one signal transmitting component includes: A fourth signal transmitter (83) is disposed on the seat body (5), near the connection of the seat belt to the seat body (5) or the portion where the seat belt passes through, and includes a communication driving circuit, and is capable of emitting a preset command signal when the restraint state of the seat belt changes; The at least one detection component includes: A tensile force sensor (82) is disposed at the connection of the seat belt to the seat body (5) or the portion where the seat belt passes through, for measuring the tensile force of the buckle (81), and is connected to the communication driving circuit of the fourth signal transmitter (83) by wire communication, and is capable of turning on the communication driving circuit when the measured tensile force value is within a second tensile force range, and turning off the communication driving circuit when it is not within the second tensile force range.

15. The child occupant restraint system according to claim 1, wherein, The child occupant restraint system is connected to the motor vehicle through an ISOFIX connector (91), and the at least one signal transmitting component includes: A fifth signal transmitter (93) is disposed on the seat body (5), near the connection portion of the seat body (5) to the motor vehicle, and includes a communication driving circuit, and is capable of emitting a preset command signal when the connection state between the ISOFIX connector (91) and the motor vehicle changes; The at least one detection component includes: A Hall sensor (92) is disposed inside the ISOFIX connector (91), and detects the connection state between the ISOFIX connector (91) and the motor vehicle based on the change of magnetic flux, and is connected to the communication driving circuit of the fifth signal transmitter (93) by wire communication, and is capable of turning on the communication driving circuit when the ISOFIX connector (91) is connected to the motor vehicle, and turning off the communication driving circuit when the ISOFIX connector (91) is not connected to the motor vehicle.

16. The child occupant restraint system according to claim 1, wherein, The at least one signal transmitting component is configured to: when a set change occurs in the working state of the child occupant restraint system, trigger its own communication driving circuit to turn on, and then emit a command signal; when no set change occurs in the working state of the child occupant restraint system, trigger its own communication driving circuit to turn off, and then stop emitting the command signal.

17. The child occupant restraint system according to claim 16, wherein, The at least one signal transmitting component is further configured to: be in a power-on sleep state after being turned on; emit a preset command signal after its own communication driving circuit has been turned on for more than a second set duration; and re-enter the power-on sleep state when the communication driving circuit fails to be re-connected within a first set duration after stopping emitting the command signal.

18. The child occupant restraint system according to claim 1, wherein, The at least one signal transmitting component is wirelessly communicatively connected to the execution terminal based on Bluetooth technology. The instruction signals emitted by the at least one signal transmitting component include a set of preset Bluetooth instructions, and the Bluetooth instructions are compiled according to the Bluetooth HID protocol. When the execution terminal is Bluetooth paired and connected to the at least one signal transmitting component, the Bluetooth instructions can trigger the execution terminal to execute a preset operation scheme.

19. The child occupant restraint system according to claim 18, wherein, the at least one signal transmitting component is further configured to: emit a Bluetooth signal after being turned on for the execution terminal within the Bluetooth signal reception range to search; respond to the password input by the execution terminal, establish a Bluetooth connection with the execution terminal and pair with each other; and when there is no Bluetooth pairing, when the execution terminal that has already established a pairing is within the Bluetooth signal reception range, automatically Bluetooth connect with the execution terminal.

20. The child occupant restraint system according to claim 1, wherein, the at least one signal transmitting component is wirelessly communicatively connected to the execution terminal through a radio frequency chip, and the radio frequency chip is embedded with an instruction set for controlling the execution terminal to execute a preset operation scheme.

21. The child occupant restraint system according to claim 1, wherein, the execution terminal includes: a smart phone or a tablet computer, which is arranged at the headrest or the rear part of the backrest of the front row seat directly opposite to the child occupant restraint system, is Bluetooth connected to the at least one signal transmitting component, and is configured to: play a preset audio-visual file when receiving at least one of the instruction signals, pause playing the preset audio-visual file when at least one of the instruction signals is interrupted, and continue playing the preset audio-visual file when the instruction signal is received again within a first set duration after at least one of the instruction signals is interrupted.

22. The child occupant restraint system according to claim 1, wherein, the execution terminal includes: a motor vehicle multimedia display screen, which is Bluetooth connected to the at least one signal transmitting component, can display the detection data of the at least one detection component, and is configured to: play a preset audio-visual file when receiving at least one of the instruction signals, pause playing the preset audio-visual file when at least one of the instruction signals is interrupted, and continue playing the preset audio-visual file when the instruction signal is received again within a first set duration after at least one of the instruction signals is interrupted.

23. The child occupant restraint system according to claim 1, wherein, the execution terminal includes: a driving recorder display, which is wirelessly communicatively connected to the at least one signal transmitting component through Bluetooth or a radio frequency chip, and is configured to: based on an embedded RTOS system or a LINUX system, through an embedded playback program, respond to the received Bluetooth instructions to control the playback of the audio-visual stored in the driving recorder display.

24. The child occupant restraint system according to claim 1, wherein, the execution terminal includes: A detachable display terminal, which can be connected to internal functional components or a vehicle key of a motor vehicle, wirelessly communicates with the at least one signal transmitting component through a radio frequency chip, and is configured to emit sound, light, and vibration alarm information after failing to receive at least one of the command signals again within a first set duration after interruption of at least one of the command signals.

25. The child occupant restraint system according to claim 24, wherein, the detachable display terminal is a handheld alarm terminal (10), and the handheld alarm terminal (10) further includes a distance determination module, and the distance determination module is configured to emit sound, light, and vibration alarm information when the distance between itself and the at least one signal transmitting component exceeds a set distance.

26. The child occupant restraint system according to claim 1, wherein, the at least one signal transmitting component is in wired communication connection with the at least one detection component one by one, and the signal transmitting component is in wireless communication connection with the execution terminal in a one-to-one or one-to-many manner, and one or more of the execution terminals are configured to: execute a preset operation plan according to a corresponding one of the command signals.

27. The child occupant restraint system according to claim 1, wherein, the at least one signal transmitting component is in wired communication connection with the at least one detection component one by one, and at least one of the signal transmitting components is in wireless communication connection with the at least one execution terminal in a many-to-one or many-to-many manner, and one or more of the execution terminals are configured to: execute a preset operation plan according to corresponding multiple command signals.

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