A child safety seat detection system and child safety seat

Abstract

The utility model discloses a child safety seat detection system, include: controller, at least one resistance, with controller series connection, with at least one seat switch structure corresponding to at least one resistance, and the seat switch structure is parallel with corresponding resistance, the seat switch structure includes off state and closed state, in closed state, and the resistance parallel with this seat switch structure short circuit, in off state, and the resistance parallel with this seat switch structure has the current flow. The utility model can be after the automatic, quick detection of its installation state to child safety seat installation, and the connection state of safety belt on child safety seat. The utility model further provides a child safety seat.

Description

Technical Field

[0001] This utility model relates to the field of child safety seats, and in particular to a child safety seat detection system and a child safety seat. Background Technology

[0002] A child safety seat is a device specifically designed for children of different ages to effectively improve their safety while traveling in a vehicle. In the event of a collision or sudden deceleration, a child safety seat can reduce the impact force on the child and restrict their body movement, thereby minimizing injury and ensuring the child's safety while traveling.

[0003] However, in actual use, parents or guardians often find it difficult to determine whether a child safety seat is correctly installed. Current technology also lacks a simple and effective mechanism to monitor whether the seatbelt is properly fastened when a child is in a child safety seat. This means that in actual use, if a child safety seat is not installed correctly or the seatbelt is not fastened, it may increase the risk of injury to the child in a traffic accident, and may even worsen the injury. Therefore, there is an urgent need for a system that can automatically and quickly detect the installation status of a child safety seat after installation and issue warnings when necessary to ensure the safety of children traveling in vehicles. Utility Model Content

[0004] The purpose of this invention is to address the lack of a child safety seat detection system in the existing technology that can quickly and automatically detect whether a child safety seat has been successfully installed. This invention provides a child safety seat detection system and a child safety seat that can automatically and quickly detect the installation status of the child safety seat and the connection status of the seat belt after installation.

[0005] To address the aforementioned technical problems, this utility model discloses a child safety seat detection system, comprising:

[0006] Controller;

[0007] At least one resistor is connected in series with the controller;

[0008] At least one seat switch structure corresponding one-to-one with the at least one resistor, wherein the seat switch structure is connected in parallel with the corresponding resistor;

[0009] The seat switch structure includes an open state and a closed state;

[0010] In the closed state, the resistor connected in parallel with the seat switch structure is short-circuited;

[0011] In the disconnected state, current flows through the resistor connected in parallel with the seat switch structure.

[0012] Using the above technical solution, the seat switch structure is connected in parallel with a resistor. The seat switch structure has two states: open and closed. When the seat switch structure is in the closed state, the resistor connected in parallel with it is short-circuited, resulting in no current flowing through the resistor. When the seat switch structure is in the open state, current flows through the resistor connected in parallel with it. The resistor connected in series with the controller forms a closed loop. Therefore, the resistance value of the closed loop can be used to determine whether the seat switch structure is in the open or closed state.

[0013] Using the above circuit, there is no need for complex sensors and algorithms, the number of electronic components is small, the circuit structure is simple, the cost is low and the energy consumption is low, it is easy to manufacture, and the cost is relatively cheap.

[0014] According to another specific embodiment of the present invention, an embodiment of the present invention discloses a child safety seat detection system, wherein the number of resistors is one; the seat switch structure includes: a first child seat interface and a second child seat interface provided on the vehicle, and a first child seat plug and a second child seat plug provided on the child safety seat, wherein the resistor is connected in series between the first child seat interface and the second child seat interface;

[0015] The first child seat plug is inserted into the first child seat interface, and the second child seat plug is inserted into the second child seat interface, and the seat switch structure is in the closed state;

[0016] When the first child seat plug is separated from the first child seat interface, and / or the second child seat plug is separated from the second child seat interface, the seat switch structure is in the disconnected state.

[0017] The above technical solution utilizes two child seat interfaces on the vehicle and two child seat plugs on the child safety seat to form a seat switch structure. The opening and closing state of the seat switch structure depends on the connection between the child seat interfaces and the child seat plugs. When both child seat interfaces are plugged in, the seat switch structure is in the closed state, indicating that the child safety seat is successfully installed in the vehicle. When neither child seat interface is plugged in, the seat switch structure is in the open state, indicating that the child safety seat is not successfully installed in the vehicle. Therefore, by determining whether the seat switch structure is in the open or closed state, it can be determined whether the child safety seat is successfully installed in the vehicle.

[0018] According to another specific embodiment of the present invention, a child safety seat detection system is disclosed, wherein the resistor includes a first resistor, a second resistor, and a third resistor, which are connected in series; the seat switch structure includes a first switch structure, a second switch structure, and a third switch structure, which are connected in parallel to the first resistor, the second resistor, and the third resistor, respectively.

[0019] The first switch structure includes: a left shoulder seatbelt plug and a left shoulder seatbelt interface disposed on the child safety seat;

[0020] The left shoulder seatbelt plug is inserted into the left shoulder seatbelt interface, and the first switch structure is in the closed state;

[0021] The left shoulder seatbelt plug is separated from the left shoulder seatbelt interface, and the first switch structure is in the disconnected state;

[0022] The second switch structure includes: a right shoulder seatbelt plug and a right shoulder seatbelt interface located on the child safety seat;

[0023] The right shoulder seatbelt plug is inserted into the right shoulder seatbelt interface, and the second switch structure is in the closed state;

[0024] The right shoulder seatbelt plug is separated from the right shoulder seatbelt interface, and the second switch structure is in the disconnected state;

[0025] The third switch structure is assembled between the child safety seat and the child safety seat cushion;

[0026] When a child is in the child safety seat, the third switch structure is in the closed state.

[0027] When no child is riding in the child safety seat, the third switch structure is in the off state.

[0028] Using the above technical solution, the first switch is formed by the left shoulder seatbelt plug and the left shoulder seatbelt interface, the second switch is formed by the right shoulder seatbelt plug and the right shoulder seatbelt interface, and the third switch is installed between the child safety seat and the seat cushion. The opening and closing states of the first and second switches depend on the connection between the left and right shoulder seatbelt plugs and the left and right shoulder seatbelt interfaces, while the opening and closing state of the third switch depends on whether a child is riding in the child safety seat. If a child is riding in the child safety seat, the third switch is in the closed state, and the first and second switches are closed only if both the left and right shoulder seatbelt plugs are inserted into the shoulder seatbelt interfaces. Therefore, by judging the opening and closing states of the three switches, it can be determined whether the left and right shoulder seatbelts are fastened when a child is riding in the child safety seat.

[0029] According to another specific embodiment of the present invention, an embodiment of the present invention discloses a child safety seat detection system, wherein the resistance values ​​of the first resistor, the second resistor, and the third resistor are different from each other.

[0030] By adopting the above technical solution, since the resistance values ​​of the first resistor, the second resistor, and the third resistor are different from each other, when the above resistors are short-circuited by the corresponding seat switch structures, the opening and closing state of the seat switch structure is uniquely determined, preventing misjudgment of the opening and closing state of each seat switch structure due to the same resistance value.

[0031] According to another specific embodiment of the present invention, a child safety seat detection system is disclosed, wherein the controller is an airbag controller.

[0032] According to another specific embodiment of the present invention, an embodiment of the present invention discloses a child safety seat detection system, which further includes a display device. The display device is electrically connected to the controller and is used to display the resistance value of a resistor connected in series with the controller.

[0033] By using the above technical solution, the resistance value across the resistor connected in series with the controller can be displayed on the display device, which can intuitively show the user whether the child safety seat has been successfully installed in the vehicle seat and whether the seat belt on the child safety seat is fastened.

[0034] When determining whether a child safety seat has been successfully installed, if the resistance value displayed on the device is 0, the seat switch structure connected in parallel with that resistor is in a closed state, indicating that the child safety seat has been successfully installed; if the resistance value displayed on the device is not 0, the seat switch structure connected in parallel with that resistor is in an open state, indicating that the child safety seat has not been successfully installed.

[0035] When determining whether the seat belt on a child safety seat is fastened, if the resistance value displayed by the display device is 0, then the first, second, and third switch structures are all in the closed state, indicating that a child is riding in the child safety seat and the shoulder seat belt plugs on both sides are inserted into the shoulder seat belt interfaces, meaning the seat belt is fastened. If the resistance value displayed by the display device is not 0, then at least one of the first, second, and third switch structures is in the open state, indicating that a child is riding in the child safety seat and the seat belt is not fastened. According to another specific embodiment of this utility model, this utility model discloses a child safety seat detection system, wherein both the first and second child seat interfaces adopt ISOFIX interfaces.

[0036] Using the above technical solution, the ISOFIX interface is a universal interface for installing child safety seats in vehicles. The purpose of the ISOFIX interface is to make the installation of child safety seats quick and simple, with a rigid connection, thereby increasing safety.

[0037] The present invention also discloses a child safety seat, wherein the child safety seat includes at least the child safety seat detection system described in any of the above embodiments. Attached Figure Description

[0038] Figure 1A The circuit diagram shown is illustrated when the child safety seat provided in the embodiment of this application is successfully installed.

[0039] Figure 1B The diagram illustrates a circuit diagram of a child safety seat provided in this application when one of its interfaces fails to connect successfully.

[0040] Figure 1C The circuit diagram shown illustrates the situation where two interfaces in the child safety seat provided in this application fail to connect successfully.

[0041] Figure 2 This application provides a circuit diagram for determining whether the seat belt on a child safety seat is fastened, according to an embodiment of the present application.

[0042] Figure 3 A schematic diagram of the seat belt on a child safety seat provided in an embodiment of this application is shown. Detailed Implementation

[0043] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Although the description of this utility model will be presented in conjunction with preferred embodiments, this does not mean that the features of this utility model are limited to this embodiment. On the contrary, the purpose of describing the utility model in conjunction with the embodiments is to cover other options or modifications that may be derived based on the claims of this utility model. To provide a deep understanding of this utility model, many specific details will be included in the following description. This utility model may also be implemented without using these details. Furthermore, to avoid confusion or obscuring the focus of this utility model, some specific details will be omitted in the description. It should be noted that, without conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0044] It should be noted that in this specification, similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0045] In the description of this embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model.

[0046] The terms “first”, “second”, etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0047] In the description of this embodiment, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment based on the specific circumstances.

[0048] Child safety seats are seats specifically designed for children. Each child safety seat has two child safety seat plugs, and the vehicle seat has two child seat interfaces that match these plugs. Simply insert the two child safety seat plugs into the two child seat interfaces and secure them to complete the installation. The child safety seat also has a three-point seatbelt to restrain the child. Insert the three-point seatbelt plug into the seatbelt buckle to fasten the seatbelt.

[0049] However, in actual use, parents or guardians often find it difficult to determine whether a child safety seat has been successfully installed and whether the seat belt is fastened when the child is in the child safety seat.

[0050] To address the aforementioned issues and reduce the risks associated with using child safety seats, the child safety seat detection system of this application embodiment, through the installation of a simple circuit, can automatically and quickly detect the installation status of the child safety seat and the connection status of the seat belt after installation.

[0051] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0052] See Figures 1A to 1C In some embodiments, the child safety seat detection system can be used to determine whether a child safety seat has been successfully installed in a vehicle. The child safety seat detection system includes a controller ACU, a resistor R0, a seat switch structure K0, and a display device. The controller ACU is connected in series with the resistor R0, and the resistor R0 and the seat switch structure K0 are connected in parallel. The display device is electrically connected to the controller ACU and is used to display the resistance value across the resistor R0. The display device is, for example, a monitor. The controller ACU may be an airbag controller, but is not limited to this. The seat switch structure K0 includes a first child seat interface ISOFIX1 and a second child seat interface ISOFIX2 located on the vehicle, and a first child seat plug ISOFIX3 and a second child seat plug ISOFIX4 located on the child safety seat 10. The resistor R0 is connected in series between the first child seat interface ISOFIX1 and the second child seat interface ISOFIX2.

[0053] When the first child seat plug ISOFIX1 is separated from the first child seat interface ISOFIX3, and / or the second child seat plug ISOFIX2 is separated from the second child seat interface ISOFIX4, the seat switch structure K0 is in the off state, and current flows through the resistor R0.

[0054] The first child seat plug ISOFIX1 is inserted into the first child seat interface ISOFIX3, and the second child seat plug ISOFIX2 is inserted into the second child seat interface ISOFIX4. The seat switch structure K0 is in the closed state, and the resistor R0 is short-circuited.

[0055] In this embodiment, resistor R0 is connected in series with the first child seat interface ISOFIX1, the controller ACU, and the second child seat interface ISOFIX2 to form a first closed loop 20. The child safety seat 10 can be considered as a wire with zero resistance. The resistance value of resistor R0 is much greater than the resistance value of the child safety seat 10. For example, the resistance value of resistor R0 can be selected as 25Ω, 50Ω, or 100Ω, but is not limited to these. The display device is electrically connected to the controller ACU and can be used to display the resistance value of the first closed loop 20. Therefore, the resistance value of the first closed loop 20 displayed on the display device can be used to determine whether the child safety seat 10 has been successfully installed in the vehicle.

[0056] See Figure 1A The first child seat plug ISOFIX1 and the second child seat plug ISOFIX2 are inserted into the first child seat interface ISOFIX3 and the second child seat interface ISOFIX4 respectively. The seat switch structure K0 is in the closed state, and the resistor R0 is short-circuited. At this time, the display device shows that the resistance value of the first closed circuit 20 is 0, indicating that the child safety seat 10 has been successfully installed in the vehicle seat.

[0057] See Figure 1B When the first child seat plug ISOFIX1 is separated from the first child seat interface ISOFIX3, the second child seat plug ISOFIX2 is inserted into the second child seat interface ISOFIX4, and the seat switch structure K0 is in the open state, the display device shows that the resistance value of the first closed circuit 20 is the resistance value of the resistor R0, indicating that the child safety seat 10 has not been successfully installed in the vehicle seat.

[0058] See Figure 1C When the first child seat plug ISOFIX1 is separated from the first child seat interface ISOFIX3, and the second child seat plug ISOFIX2 is separated from the second child seat interface ISOFIX4, the seat switch structure K0 is in the open state. At this time, the display device shows that the resistance value of the first closed circuit 20 is the resistance value of the resistor R0, indicating that the child safety seat 10 has not been successfully installed in the vehicle seat.

[0059] See Figure 2In some embodiments, the child safety seat detection system can be used to determine whether the seat belt on a child safety seat is fastened. The child safety seat detection system includes a controller ACU, a first resistor R1, a second resistor R2, a third resistor R3, a first switch structure K1, a second switch structure K2, a third switch structure K3, and a display device. The controller ACU, the first resistor R1, the second resistor R2, and the third resistor R3 are connected in series. The first switch structure K1, the second switch structure K2, and the third switch structure K3 are connected in parallel with the first resistor R1, the second resistor R2, and the third resistor R3, respectively. The display device is electrically connected to the controller ACU and is used to display the resistance value across the circuit formed by the series connection of the first resistor R1, the second resistor R2, and the third resistor R3. The display device is, for example, a monitor. The controller ACU can be an airbag controller, but is not limited to this.

[0060] Specifically, the first switch structure K1 includes a left shoulder seat belt plug S1 and a left shoulder seat belt interface S2 disposed on the child safety seat 10;

[0061] When the left shoulder safety belt plug S1 is inserted into the left shoulder safety belt interface S2, the first switch structure K1 is in the closed state, and the first resistor R1 is short-circuited.

[0062] The left shoulder safety belt plug S1 is separated from the left shoulder safety belt interface S2, the first switch structure K1 is in the open state, and current flows through the first resistor R1;

[0063] The second switch structure K2 includes a right shoulder seat belt plug S3 and a right shoulder seat belt interface S4 located on the child safety seat 10;

[0064] When the right shoulder safety belt plug S3 is inserted into the right shoulder safety belt interface S4, the second switch structure K2 is in the closed state, and the second resistor R2 is short-circuited.

[0065] The right shoulder safety belt plug S3 is separated from the right shoulder safety belt interface S4, the second switch structure K2 is in the open state, and current flows through the second resistor R2;

[0066] The third switch structure K3 is installed between the child safety seat and the child safety seat cushion. The third switch structure K3 uses a gravity sensor switch.

[0067] When a child is in the child safety seat 10, the third switch K3 is in the closed state, and the third resistor R3 is short-circuited.

[0068] Child safety seat 10 is not in use, the third switch structure K3 is in the off state, and current flows through the third resistor R3.

[0069] In this embodiment, the first resistor R1, the second resistor R2, and the third resistor R3 are connected in series to form a second closed loop 30 with the controller ACU. The controller ACU is provided with a hardware interface 40. One end of the hardware interface 40 is connected to the controller ACU, and the other end is connected to the first resistor R1, the second resistor R2, and the third resistor R3. The hardware interface 40 can be an automotive connector, but is not limited to it. Other interfaces that form a closed loop with the first resistor R1, the second resistor R2, and the third resistor R3 can also be used.

[0070] See Figure 3 The child safety seat 10 uses a three-point seat belt 11, which includes a left shoulder seat belt 111, a right shoulder seat belt 112, and a seat belt buckle 113. The bottom end of the left shoulder seat belt 111 has a left shoulder seat belt plug S1, and the bottom end of the right shoulder seat belt 112 has a right shoulder seat belt plug S3. The left and right sides of the seat belt buckle 113 have left shoulder seat belt interfaces S2 and right shoulder seat belt interfaces S4, respectively, which match the left shoulder seat belt plug S1 and right shoulder seat belt plug S3. The left shoulder seat belt plug S1 and left shoulder seat belt interface S2 constitute a first switch structure K1, and the right shoulder seat belt plug S3 and right shoulder seat belt interface S4 constitute a second switch structure K2. A third switch structure K3 is installed between the child safety seat 10 and its seat cushion. The third switch structure K3 is a gravity sensor switch that can detect whether a child is riding in the child safety seat 10. The first switch structure K1, the second switch structure K2, and the third switch structure K3 independently control the conduction current of the first resistor R1, the second resistor R2, and the third resistor R3, respectively. For example, the parameters of each resistor in the second closed loop 30 can be selected as follows: the resistance of the first resistor R1 is 4Ω, the resistance of the second resistor R2 is 5Ω, and the resistance of the third resistor R3 is 6Ω. The display device is electrically connected to the controller ACU and can be used to display the resistance value of the second closed loop 30. Therefore, the resistance value of the second closed loop 30 displayed on the display device can be used to determine whether the seat belt on the child safety seat 10 is fastened. When the display device shows that the resistance value of the second closed loop 30 is equal to the resistance value of the first resistor R1 (i.e., 4Ω), it indicates that a child is riding in the child safety seat 10, and only the left shoulder seat belt plug S1 is not inserted into the left shoulder seat belt interface S2.

[0071] When the display device shows that the resistance value of the second closed loop 30 is equal to the resistance value of the second resistor R2 (i.e., 5Ω), it indicates that a child is riding in the child safety seat 10 and only the right shoulder seat belt plug S3 is not inserted into the right shoulder seat belt interface S4.

[0072] When the display device shows that the resistance value of the second closed loop 30 is equal to the resistance value of the third resistor R3 (i.e., 6Ω), it indicates that there is no child riding in the child safety seat 10, and the left shoulder safety belt plug S1 is inserted into the left shoulder safety belt interface S2, and the right shoulder safety belt plug S3 is inserted into the right shoulder safety belt interface S4.

[0073] When the display device shows that the resistance value of the second closed loop 30 is equal to the sum of the resistance values ​​of the first resistor R1 and the second resistor R2 (i.e., 9Ω), it indicates that there is a child riding in the child safety seat 10, and the left shoulder safety belt plug S1 is not inserted into the left shoulder safety belt interface S2, and the right shoulder safety belt plug S3 is not inserted into the right shoulder safety belt interface S4.

[0074] When the display device shows that the resistance value of the second closed loop 30 is equal to the sum of the resistance values ​​of the first resistor R1 and the third resistor R3 (i.e., 10Ω), it indicates that no child is riding in the child safety seat 10 and only the left shoulder seat belt plug S1 is not inserted into the left shoulder seat belt interface S2.

[0075] When the display device shows that the resistance value of the second closed loop 30 is equal to the sum of the resistance values ​​of the second resistor R2 and the third resistor R3 (i.e., 11Ω), it indicates that there is no child riding in the child safety seat 10, and only the right shoulder seat belt plug S3 is not inserted into the right shoulder seat belt interface S4.

[0076] When the display device shows that the resistance value of the second closed loop 30 is equal to the sum of the resistance values ​​of the first resistor R1, the second resistor R2 and the third resistor R3 (i.e., 15Ω), it indicates that there is no child riding in the child safety seat 10, and the left shoulder seat belt plug S1 is not inserted into the left shoulder seat belt interface S2, and the right shoulder seat belt plug S3 is not inserted into the right shoulder seat belt interface S4.

[0077] When the display device shows that the resistance value of the second closed circuit 30 is 0, it indicates that a child is riding in the child safety seat 10, and the left shoulder safety belt plug S1 is inserted into the left shoulder safety belt interface S2, and the right shoulder safety belt plug S3 is inserted into the right shoulder safety belt interface S4.

[0078] In this embodiment, when the child is not riding in the child safety seat 10, it is not necessary to consider whether the shoulder seat belt interface is inserted into the shoulder seat belt interface. It is only considered when there is a child riding in the child safety seat 10, that is, when the resistance value of the second closed circuit 30 does not include the resistance value of the third resistor R3, whether the seat belt on the child safety seat 10 is fastened.

[0079] Therefore, when the display device shows that the resistance value of the second closed loop 30 is equal to the resistance value of the first resistor R1 and / or the second resistor R2 (i.e., 4Ω, or 5Ω, or 9Ω), it indicates that when a child is riding in the child safety seat 10, at least one shoulder seat belt plug is not inserted into the shoulder seat belt interface.

[0080] If and only if the display device shows that the resistance value of the second closed loop 30 is 0, it indicates that there is a child sitting in the child safety seat 10, and the shoulder belt plugs on both the left and right sides are inserted into the shoulder belt interfaces on both sides, and the seat belt is fastened at this time.

[0081] It should be noted that the resistance values ​​of the first resistor R1, the second resistor R2, and the third resistor R3 are all different from each other, and the resistance value of any one resistor in the second closed loop 30 is different from the sum of the resistance values ​​of the other two resistors. This setting ensures that once the resistance value of the second closed loop 30 is determined, the open and closed states of the three switch structures are uniquely determined and will not cause confusion, thus preventing misjudgment of whether the seat belt on the child safety seat 10 is fastened.

[0082] In summary, the embodiments of this application feature a simple circuit structure and employ fewer electronic components, such as resistors and seat switch structures. In subsequent solutions, only a resistance detection device is needed to detect the resistance of the first closed loop 20 and the second closed loop 30. This allows for the automatic and rapid detection of the installation status of the child safety seat and the connection status of the seatbelt after installation, based on the resistance values ​​of the first closed loop 20 and the second closed loop 30.

[0083] Although the present invention has been illustrated and described with reference to certain preferred embodiments, those skilled in the art should understand that the above description is a further detailed explanation of the present invention in conjunction with specific embodiments, and should not be construed as limiting the specific implementation of the present invention to these descriptions. Those skilled in the art can make various changes in form and detail, including some simple deductions or substitutions, without departing from the spirit and scope of the present invention.

Claims

1. A child safety seat detection system, characterized in that, include: Controller; At least one resistor is connected in series with the controller; At least one seat switch structure corresponding one-to-one with the at least one resistor, wherein the seat switch structure is connected in parallel with the corresponding resistor; The seat switch structure includes an open state and a closed state; In the closed state, the resistor connected in parallel with the seat switch structure is short-circuited; In the disconnected state, current flows through the resistor connected in parallel with the seat switch structure.

2. The child safety seat detection system as described in claim 1, characterized in that, The number of resistors is one; the seat switch structure includes: a first child seat interface and a second child seat interface provided on the vehicle, and a first child seat plug and a second child seat plug provided on the child safety seat, wherein the resistor is connected in series between the first child seat interface and the second child seat interface; The first child seat plug is inserted into the first child seat interface, and the second child seat plug is inserted into the second child seat interface, and the seat switch structure is in the closed state; When the first child seat plug is separated from the first child seat interface, and / or the second child seat plug is separated from the second child seat interface, the seat switch structure is in the disconnected state.

3. The child safety seat detection system as described in claim 1, characterized in that, The resistor includes a first resistor, a second resistor, and a third resistor, which are connected in series. The seat switch structure includes a first switch structure, a second switch structure, and a third switch structure, which are connected in parallel to the first resistor, the second resistor, and the third resistor, respectively. The first switch structure includes: a left shoulder seatbelt plug and a left shoulder seatbelt interface disposed on the child safety seat; The left shoulder seatbelt plug is inserted into the left shoulder seatbelt interface, and the first switch structure is in the closed state; The left shoulder seatbelt plug is separated from the left shoulder seatbelt interface, and the first switch structure is in the disconnected state; The second switch structure includes: a right shoulder seatbelt plug and a right shoulder seatbelt interface located on the child safety seat; The right shoulder seatbelt plug is inserted into the right shoulder seatbelt interface, and the second switch structure is in the closed state; The right shoulder seat belt plug is separated from the right shoulder seat belt interface, and the second switch structure is in the disconnected state; The third switch structure is assembled between the child safety seat and the child safety seat cushion; When a child is in the child safety seat, the third switch structure is in the closed state. When no child is riding in the child safety seat, the third switch structure is in the off state.

4. The child safety seat detection system as described in claim 3, characterized in that, The resistance values ​​of the first resistor, the second resistor, and the third resistor are all different.

5. A child safety seat detection system as described in claim 1, characterized in that, The controller is an airbag controller.

6. A child safety seat detection system as described in claim 1, characterized in that, It also includes a display device, which is electrically connected to the controller and is used to display the resistance value of a resistor connected in series with the controller.

7. A child safety seat detection system as described in claim 2, characterized in that, Both the first and second child seat interfaces use ISOFIX connectors.

8. A child safety seat, characterized in that, Includes the child safety seat detection system as described in any one of claims 1-7.

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