Child seat installation state detection system and vehicle

Abstract

The invention provides a child seat installation state detection system and a vehicle. The child seat installation state detection system comprises a vehicle body controller and an interface detection circuit. The interface detection circuit comprises a conductive material arranged above the first metal framework in the child seat fixing opening; the first metal framework is connected with a detection port of the automobile body controller and a power source. The conductive material is arranged above the metal framework in the child seat fixing opening, then the installation state of the child seat is determined according to the contact state between the conductive material and the second metal framework in the child seat, and special detection systems do not need to be developed for different vehicle types; the detection cost of the installation state of the child seat is greatly reduced; moreover, the detection system is not affected by the vehicle type, and the adaptability of the detection system is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicles, and in particular to a child seat installation status detection system and a vehicle. Background Art

[0002] After the rules of the 2024 version of the China New Car Assessment Program were changed, it became more difficult to achieve the five-star development goal. One of the ways to improve the score is to add a child seat communication function, which can contribute a certain number of points. At present, the industry mainly adapts a single child seat, which has the function of monitoring the status of the child safety seat fixing system (International Standards Organization FIX, ISO-FIX) and Bluetooth communication function. The child seat monitors the ISO-FIX status and sends the status to the vehicle, which then reminds the occupants to achieve the China New Car Assessment Program's extra score requirements.

[0003] Usually, the status detection of child seats is mainly based on the Bluetooth module of the child seat itself. By establishing a Bluetooth connection between the child seat and the vehicle, the access status information of the child seat ISO-FIX interface is transmitted to the vehicle and displayed on the vehicle computer. This status detection method requires the development of a detection system for each vehicle model, and the cost of system development is too high; and the development of the detection system can only target one type of vehicle model and child seat, resulting in the detection system being unable to detect each vehicle model and child seat, and the adaptability of the detection system is poor.

[0004] The above contents are only used to assist in understanding the technical solution of the present invention and do not constitute an admission that the above contents are prior art. Summary of the invention

[0005] The main purpose of the present invention is to provide a child seat installation status detection system and a vehicle, aiming to solve the technical problems of high cost and poor adaptability of child seat status detection in the prior art.

[0006] To achieve the above object, the present invention proposes a child seat installation status detection system, the child seat installation status detection system comprising: a vehicle body controller and an interface detection circuit;

[0007] The interface detection circuit includes: a conductive material disposed above a first metal frame in a child seat fixing port;

[0008] The first metal frame is connected to the detection port and the power supply of the vehicle body controller; the child seat fixing port is used to fix the hard interface on the child seat;

[0009] The interface detection circuit is used to output a corresponding first electrical parameter to the detection port of the vehicle body controller according to the contact state between the second metal frame and the conductive material in the child seat;

[0010] The vehicle body controller is used to determine the installation status of the child seat according to the first electrical parameter at the detection port.

[0011] Optionally, the child seat installation status detection system further includes: an object detection circuit;

[0012] The object detection circuit is connected to the detection port of the vehicle body controller and a power supply, and the object detection circuit is arranged at a seat for installing the child seat;

[0013] The object detection circuit is used to output a corresponding second electrical parameter to a detection port of the vehicle body controller according to whether there is an object on the seat;

[0014] The vehicle body controller is further used to determine the installation status of the child seat according to the first electrical parameter and the second electrical parameter.

[0015] Optionally, the object detection circuit comprises: a first switch and a first resistor;

[0016] One end of the first resistor is connected to the first detection port of the body controller and the negative power supply, the second end of the first resistor is connected to the first end of the first switch, and the second end of the first switch is connected to the second detection port of the body controller and the positive power supply.

[0017] Optionally, the child seat installation status detection system further includes: a detection control circuit:

[0018] The first end of the detection control circuit is connected to the interface detection circuit, the second end is respectively connected to the object detection circuit and the detection port of the vehicle body controller, and the third end is connected to the human-computer interaction unit;

[0019] The detection control circuit is used to control the connection between the interface detection circuit and the vehicle body controller according to the control instruction input by the human-computer interaction unit.

[0020] Optionally, the detection control circuit is further used to output a corresponding third electrical parameter to the detection port of the body controller according to the contact state between the second metal skeleton and the conductive material together with the interface detection circuit when the connection between the interface detection circuit and the body controller is turned on;

[0021] The vehicle body controller is further used to determine the installation status of the child seat according to the third electrical parameter and the second electrical parameter.

[0022] Optionally, the detection control circuit includes: a second resistor and a second switch;

[0023] The first end of the second resistor is connected to the first detection port of the body controller, the second end of the second resistor is connected to the first end of the second switch, the second end of the second switch is respectively connected to the second detection port of the body controller and the object detection circuit, and the third end of the second switch is connected to the human-computer interaction unit.

[0024] Optionally, the child seat installation status detection system further includes: a short circuit protection circuit;

[0025] The short circuit protection circuit is respectively connected to the interface detection circuit and the detection control circuit;

[0026] The short-circuit protection circuit is used to prevent a branch circuit between the interface detection circuit and the body controller from being short-circuited when the connection between the interface detection circuit and the body controller is turned on.

[0027] Optionally, the short circuit protection circuit comprises: a third resistor;

[0028] One end of the third resistor is connected to the interface detection circuit, and the other end is connected to the detection control circuit.

[0029] Optionally, at least one of the following is also included:

[0030] The vehicle body controller is further configured to determine that no passenger is seated in the seat for installing the child seat when the resistance value presented at the detection port is a first preset resistance value;

[0031] The vehicle body controller is further configured to determine that a passenger is seated in the seat for installing the child seat when the resistance value presented at the detection port is a second preset resistance value;

[0032] The vehicle body controller is further configured to determine that no child seat is placed on the seat where the child seat is installed when the resistance value presented at the detection port is a third preset resistance value;

[0033] The vehicle body controller is further configured to determine that a child seat is placed in the seat where the child seat is installed but the child seat fixing port is not connected to the hard interface when the resistance value presented at the detection port is a fourth preset resistance value;

[0034] The vehicle body controller is further configured to determine that a child seat is placed on the seat where the child seat is installed and the child seat fixing port is not connected to the hard interface when the resistance value presented at the detection port is a fifth preset resistance value;

[0035] Wherein, the first to fifth preset resistance values ​​are all different.

[0036] In addition, to achieve the above-mentioned purpose, the present invention further provides a vehicle, which includes: the child seat installation status detection system.

[0037] The present invention provides a child seat installation state detection system and a vehicle, the child seat installation state detection system comprising: a vehicle body controller and an interface detection circuit; the interface detection circuit comprising: a conductive material arranged above a first metal frame in a child seat fixing port; the first metal frame is connected to a detection port of the vehicle body controller and a power supply; the child seat fixing port is used to fix a hard interface on the child seat; the interface detection circuit is used to output a corresponding first electrical parameter to the detection port of the vehicle body controller according to a contact state between a second metal frame in the child seat and the conductive material; the vehicle body controller is used to determine the installation state of the child seat according to the first electrical parameter at the detection port. The present invention sets a conductive material above the first metal frame in the child seat fixing port, and then determines the installation state of the child seat according to the contact state between the conductive material and the second metal frame in the child seat, without the need to develop a dedicated detection system for different vehicle models, thereby greatly reducing the detection cost of the child seat installation state; and the detection system is not affected by the vehicle model, thereby improving the adaptability of the detection system. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0039] Figure 1 This is a structural schematic diagram of a first embodiment of a child seat installation status detection system proposed by the present invention;

[0040] Figure 2 This is a structural diagram of the child seat installation status detection system proposed by the present invention;

[0041] Figure 3 A structural diagram of a first metal skeleton and a second metal skeleton proposed by the present invention;

[0042] Figure 4 A first structural schematic diagram of a second embodiment of a child seat installation status detection system provided by the present invention;

[0043] Figure 5 A first circuit schematic diagram of a second embodiment of a child seat installation status detection system provided by the present invention;

[0044] Figure 6 A second structural schematic diagram of a second embodiment of the child seat installation status detection system proposed by the present invention;

[0045] Figure 7 A second circuit schematic diagram of a second embodiment of the child seat installation status detection system provided by the present invention;

[0046] Figure 8 A third structural schematic diagram of the second embodiment of the child seat installation status detection system proposed by the present invention;

[0047] Fig. 9 A third circuit schematic diagram of the second embodiment of the child seat installation status detection system proposed by the present invention;

[0048] Fig.10 This is a physical diagram of the vehicle control system proposed by the present invention.

[0049] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0050] It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0051] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0052] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0053] In addition, the descriptions of "first", "second", etc. in the present invention are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0054] It is understandable that the current status detection of child seats is mainly based on the Bluetooth module of the child seat itself. By establishing a Bluetooth connection between the child seat and the vehicle, the access status information of the ISO-FIX interface of the child seat is transmitted to the vehicle and displayed on the vehicle computer. This status detection method requires the development of a detection system for the vehicle model, and the cost of system development is too high; for example, some models use this solution to increase the development cost by more than one million, which affects the cost competitiveness, and adding the system detection function requires about three months of development and testing and debugging, which affects the vehicle model development cycle. The development of this detection system can only target one type of vehicle and child seat, resulting in the inability of the detection system to detect each vehicle model and child seat, and the adaptability of the detection system is poor. For example, the vehicle of this detection solution can only be adapted to specific seats and is not universal. If the customer buys other models of seats or the seat is discontinued, the function will be completely unusable, affecting the customer's use of the car; due to differences in vehicle computer models, it cannot be horizontally transplanted to the entire vehicle series; using Bluetooth communication is easily interfered by Bluetooth signals from other electronic devices, resulting in unstable connection; when adapting the seat, the child seat manufacturer must provide the Bluetooth communication protocol, which is easy to be stuck; the upgrade and discontinuation of child seats cannot be controlled, etc.

[0055] In order to solve the above problems, the present invention proposes a new child seat installation status detection system. Figure 1 , Figure 1 This is a schematic diagram of the structure of the first embodiment of the child seat installation status detection system of the present invention. Figure 1 A first embodiment of a child seat installation status detection system of the present invention is provided.

[0056] In this embodiment, the child seat installation status detection system includes: a vehicle body controller 10 and an interface detection circuit 20;

[0057] The interface detection circuit 20 includes: a conductive material S0 arranged above a first metal frame in a child seat fixing port; the first metal frame is connected to a detection port of the vehicle body controller 10 and a power supply; the child seat fixing port is used to fix a hard interface on the child seat.

[0058] It should be noted that the child seat fixing port is an interface for fixing the child seat on the seat inside the vehicle. The hard interface on the child seat is an interface provided on the child seat for fixing with the seat on the vehicle. The first metal frame is a fixed structure provided in the child seat fixing port. The second metal frame is a metal frame provided on the child seat, and is used to cooperate with the first metal frame to fix the child seat. The body controller 10 is a controller for controlling the internal components of the vehicle. In the technical solution of the present application, the body controller 10 can be used to determine the connection state between the child seat fixing port and the hard interface on the child seat, that is, the connection state between the conductive material above the first metal frame and the second metal frame according to the electrical parameters output by the interface detection circuit 20. The body controller 10 is internally provided with an electrical parameter mapping table corresponding to different interface states. The interface detection circuit 20 is a circuit for detecting whether the child seat fixing port is connected to the hard interface on the child seat. The interface detection circuit 20 can output different electrical parameters when the connection state between the child seat fixing port and the hard interface on the child seat is different.

[0059] It can be understood that the conductive material S0 is arranged above the first metal frame, and when the hard interface of the child seat is connected to the fixed port of the child seat, the second metal frame will be pressed to the conductive material S0 above the first metal frame, and the two will be in contact; when the fixed interface of the child seat is separated from the hard interface of the child seat, the conductive material S0 is completely separated from the second metal frame. Whether the conductive material S0 is connected to the second metal frame will cause the interface detection circuit 20 to output different electrical parameters. The electrical parameter can be a voltage parameter, a current parameter or a resistance parameter.

[0060] In a specific implementation, the interface detection circuit 20 can output the corresponding first electrical parameter to the detection port of the body controller 10 according to the contact state between the second metal frame and the conductive material S0; the body controller 10 determines the installation state of the child seat according to the first electrical parameter at the detection port. For example, when the first electrical parameter matches the electrical parameter corresponding to the contact state between the second metal frame and the conductive material S0, it can be determined that the child seat fixing port is normally connected to the hard interface on the child seat, and the child seat is normally installed on the seat; when the first electrical parameter matches the electrical parameter corresponding to the non-contact state between the second metal frame and the conductive material S0, it can be determined that the child seat fixing port is not connected to the hard interface on the child seat, and the child seat is not installed on the seat.

[0061] The present application provides a child seat installation state detection system, which includes: a body controller and an interface detection circuit; the interface detection circuit includes: a conductive material S0 arranged above a first metal frame in a child seat fixing port; the first metal frame is connected to a detection port of the body controller and a power supply; the child seat fixing port is used to fix a hard interface on the child seat; the interface detection circuit is used to output a corresponding first electrical parameter to the detection port of the body controller according to the contact state between the second metal frame and the conductive material S0; the body controller is used to determine the installation state of the child seat according to the first electrical parameter at the detection port. The present invention sets a conductive material S0 above the first metal frame in the child seat fixing port, and then determines the installation state of the child seat according to the contact state between the conductive material S0 and the second metal frame. There is no need to develop a dedicated detection system for different vehicle models, which greatly reduces the detection cost of the child seat installation state; and the detection system is not affected by the vehicle model, which improves the adaptability of the detection system.

[0062] Further, see Figure 2 and Figure 3 , considering that the first metal skeleton may be a closed structure, when connected to the body controller 10 through a line, it may be directly conductive, and there will be no change due to the conductive material S0 not being in contact with the second metal skeleton. In this embodiment, an insulating material may also be coated on the first metal skeleton. The insulating material can be used to prevent the first metal skeleton from forming a loop with the body controller 10 when the conductive material S0 is not in contact with the second metal skeleton, thereby preventing the conductivity of the first metal skeleton from affecting the detection result.

[0063] Reference Figure 4 , Figure 4 The second embodiment of the child seat installation state detection system of the present invention is a structural diagram of the second embodiment of the child seat installation state detection system of the present invention. Based on the first embodiment of the child seat installation state detection system of the present invention, the second embodiment of the child seat installation state detection system of the present invention is proposed.

[0064] In this embodiment, the child seat installation status detection system also includes: an object detection circuit 30; the object detection circuit 30 is connected to the detection port of the vehicle body controller 10 and a power supply, and the object detection circuit 30 is arranged at the seat for installing the child seat.

[0065] It should be understood that during the installation of a child seat, the child seat is usually placed on the seat of the vehicle first, and then the child seat fixing port is connected to the hard interface on the child seat. However, it is also possible to first connect the child seat fixing port to the hard interface on the child seat, and then place the child seat on the seat of the vehicle. For example, in the case of testing the interface or wire connection. In the above case where the child seat fixing port is first connected to the hard interface on the child seat, the child seat is not installed, and a false detection occurs.

[0066] It should be noted that in order to avoid false detection, an object detection circuit 30 is also provided in the present embodiment. The object detection circuit 30 is a circuit for detecting whether there is an object on the vehicle seat. The object detection circuit 30 can detect whether there is an object on the seat by means of gravity, image and other detection methods. When it is detected that a hard interface between the child seat fixing port and the child seat is established, and there is an object on the seat in the vehicle, false detection caused by the child seat not being installed but the child seat fixing port being connected to the hard interface on the child seat can be effectively avoided. The object detection circuit 30 outputs different electrical parameters when it detects that there is an object on the seat and when it detects that there is no object on the seat.

[0067] In a specific implementation, the object detection circuit 30 may first detect whether there is an object on the seat, and then output the corresponding second electrical parameter to the detection port of the vehicle body controller 10 according to whether there is an object on the seat; the vehicle body controller 10 may also determine the installation status of the child seat according to the first electrical parameter and the second electrical parameter. When it is detected that the hard interface between the child seat fixing port and the child seat is established, and there is an object on the seat in the vehicle, it can be determined that the child seat is installed; otherwise, it is determined that the child seat is not installed.

[0068] In addition, in order to further ensure the accuracy of the detection, image detection can also be used to output different second electrical parameters when it is confirmed that a child seat or a non-child seat is placed on the vehicle seat, thereby more accurately detecting the installation status of the child seat.

[0069] Reference Figure 5 , the object detection circuit 30 comprises: a first switch S1 and a first resistor R1;

[0070] One end of the first resistor R1 is connected to the first detection port of the body controller 10 and the negative power supply, the second end of the first resistor R1 is connected to the first end of the first switch S1, and the second end of the first switch S2 is connected to the second detection port of the body controller 10 and the positive power supply.

[0071] It can be understood that the on / off state of the first switch S1 is controlled by whether there is an object on the seat. When there is an object on the seat in the vehicle, the first switch S1 is closed; when there is no object on the seat in the vehicle, the first switch S1 is opened. The first resistor R1 is a voltage divider resistor.

[0072] exist Figure 5 In the embodiment, when there is no object on the seat in the vehicle, the first switch S1 is disconnected, and the resistance between the first detection port and the second detection port of the vehicle body controller 10 is the resistance value in the interface detection circuit 20; when there is an object on the seat in the vehicle, the first switch S1 is closed, and the resistance between the first detection port and the second detection port of the vehicle body controller 10 is the parallel resistance value of the resistance value in the interface detection circuit 20 and the first resistor R1.

[0073] Reference Figure 6 In this embodiment, the child seat installation status detection system further includes: a detection control circuit 40:

[0074] The first end of the detection control circuit 40 is connected to the interface detection circuit 20 , the second end is respectively connected to the object detection circuit 30 and the detection port of the vehicle body controller 10 , and the third end is connected to the human-computer interaction unit.

[0075] It should be understood that when checking the installation of the child seat, it will detect whether there is an object on the seat in the vehicle. If the child seat fixing port is not connected to the hard interface on the child seat, it is impossible to determine whether the seat in the vehicle is occupied by a passenger or the child seat is placed on the seat. At this time, it is unreasonable for the vehicle to prompt that the child seat has not been installed, and it is impossible to avoid the situation where a passenger sits on the seat.

[0076] It should be noted that the detection control circuit 40 is a circuit used to control whether the child seat is installed normally. The detection control circuit 40 can be set between the interface detection circuit 20 and the body controller 10. When it is necessary to check whether the child seat is installed normally, the connection between the interface detection circuit 20 and the body controller 10 can be turned on; when it is not necessary to detect whether the child seat is installed normally, the connection between the interface detection circuit 20 and the body controller 10 can be disconnected, and then the object detection circuit 30 can be used to detect whether there is a passenger on the seat. The detection control circuit 40 is controlled by the human-machine interaction unit in the vehicle. The human-machine interaction unit can receive instructions from the driver and passengers, and then control the detection control circuit 40 according to the instructions. Among them, the human-machine interaction unit can be a DA device in the vehicle.

[0077] In a specific implementation, the driver and passenger can input a control instruction for detecting whether the child seat is installed normally through the human-computer interaction unit. When the detection control circuit 40 receives the instruction, it can control the connection between the interface detection circuit 20 and the body controller 10 to detect whether the child seat is installed normally. Of course, when the driver and passenger does not input a control instruction through the human-computer interaction unit or inputs a control instruction corresponding to detecting whether there is a passenger in the seat through the human-computer interaction unit, the detection control circuit 40 can disconnect the connection between the interface detection circuit 20 and the body controller 10, and then detect whether there is a passenger in the seat in the car.

[0078] During the process of detecting whether the child seat is installed normally, the passenger can input a control instruction for detecting whether the child seat is installed normally through the human-computer interaction unit. When receiving the instruction, the detection control circuit 40 controls the connection between the interface detection circuit 20 and the body controller 10. At this time, the interface detection circuit 20 can output the corresponding third electrical parameter to the detection port of the body controller 10 according to the contact state between the second metal skeleton and the conductive material S0; the object detection circuit 30 can output the second electrical parameter corresponding to whether there is an object on the seat. The body controller 10 can determine the installation state of the child seat according to the third electrical parameter and the second electrical parameter.

[0079] Reference Figure 7 In this embodiment, the detection control circuit 40 includes: a second resistor R2 and a second switch S2;

[0080] The first end of the second resistor R2 is connected to the first detection port of the body controller 10, the second end of the second resistor R2 is connected to the first end of the second switch S2, the second end of the second switch S2 is respectively connected to the second detection port of the body controller 10 and the object detection circuit 30, and the third end of the second switch S2 is connected to the human-computer interaction unit.

[0081] exist Figure 7 In the embodiment, the state of the second switch S2 is controlled by the driver and passenger through the human-machine interaction unit. When it is necessary to detect whether the child seat is installed normally, the human-machine interaction unit can control the second switch S2 to be closed; when it is not necessary to detect whether the child seat is installed normally, the human-machine interaction unit can control the second switch S2 to be opened. The second resistor R2 is a voltage divider resistor.

[0082] exist Figure 7In the scheme, the second resistor R2 can also effectively distinguish between the absence of passengers on the vehicle seat and the absence of child seats on the vehicle seat. If the second resistor R2 does not exist, when there is no passenger on the seat, the resistance value presented between the first detection port and the second detection port of the body controller 10 is infinite; and when the child seat is detected, the child seat is not placed on the seat and the hard interface between the child seat fixing port and the child seat is established, the resistance value presented between the first detection port and the second detection port of the body controller 10 is also infinite. In the case of setting the second resistor R2, when there is no passenger on the seat, the resistance value presented between the first detection port and the second detection port of the body controller 10 is infinite; when the child seat is detected, the child seat is not placed on the seat and the hard interface between the child seat fixing port and the child seat is established, the resistance value presented between the first detection port and the second detection port of the body controller 10 is the resistance value of the second resistor R2. Therefore, the second resistor R2 can be set to further distinguish whether there is no passenger on the seat when the child seat is normally installed and whether there is no child seat on the seat when the child seat is normally installed.

[0083] Reference Figure 8 , in this embodiment, the child seat installation status detection system further includes: a short circuit protection circuit 50;

[0084] The short circuit protection circuit 50 is connected to the interface detection circuit 20 and the detection control circuit 40 respectively.

[0085] It should be understood that when a control instruction for detecting whether a child seat is installed normally is input through the human-computer interaction unit, the system activates the child seat detection function, and the detection control circuit 40 controls the connection between the interface detection circuit 20 and the body controller 10. If the resistance value in the interface detection circuit 20 is too small, it is easy for the branch where the interface detection circuit 20 is located to be short-circuited. In the case of a short circuit in the branch where the interface detection circuit 20 is located, the resistance value between the first detection port and the second detection port of the body controller 10 is maintained at 0 ohms. Not only is there a danger caused by a short circuit, but the body controller 10 is also unable to determine whether the child seat is installed normally.

[0086] It should be noted that the short circuit protection circuit 50 is a protection circuit for preventing a short circuit from occurring in the branch where the interface detection circuit 20 is located. The short circuit protection circuit 50 can set a certain resistance between the interface detection circuit 20 and the detection control circuit 40 to prevent a short circuit from occurring in the branch where the interface detection circuit 20 is located.

[0087] When activating the detection of whether the child seat is successfully installed, the short-circuit protection circuit 50 can form a certain resistance value between the interface detection circuit 20 and the detection control circuit 40 when the connection between the interface detection circuit 20 and the body controller 10 is turned on, thereby preventing the branch between the interface detection circuit 20 and the body controller 10 from being short-circuited.

[0088] Reference Fig. 9 In this embodiment, the short circuit protection circuit 50 includes: a third resistor R3;

[0089] One end of the third resistor R3 is connected to the interface detection circuit 20 , and the other end is connected to the detection control circuit 40 .

[0090] The third resistor R3 is a voltage-dividing resistor, which is arranged in series between the first metal skeleton and the second switch S2. When the conductive material S0 contacts the second metal skeleton and the second switch S2 is closed, the branch where the interface detection circuit 20 is located still has the third resistor R3 and no short circuit occurs.

[0091] In addition, in this embodiment, the short circuit protection circuit 50 may also be composed of other resistive components, and may form a certain impedance between the interface detection circuit 20 and the detection control circuit 40. The specific structure of the short circuit protection circuit 50 is not limited in detail here.

[0092] based on Fig. 9 and Fig.10 During the specific detection, the child seat installation status detection system can output a control instruction to detect whether the child seat is installed normally through the human-computer interaction unit, activate the detection function of whether the child seat is installed normally, that is, control the second switch S2 to be closed. Whether the first switch S1 is closed, whether the conductive material S0 is in contact with the second metal frame, will form different resistance values ​​between the first detection port and the second detection port of the body controller 10. In addition, when the driver and passenger do not output a control instruction to detect whether the child seat is installed normally through the human-computer interaction unit, the second switch S2 is disconnected. At this time, whether the first switch S1 is closed will also form different resistance values ​​between the first detection port and the second detection port of the body controller 10.

[0093] During the specific detection process, after the vehicle is started, the driver and passengers can input control instructions through the human-computer interaction unit; when the control instruction is to activate the child seat detection function, the second switch S2 is closed; then it is detected whether there is an object on the seat in the vehicle. If there is an object, the first switch S1 can be closed to determine that there is an object on the seat; finally, it is detected whether the conductive material S0 and the second metal frame are in contact. When the two are in contact, the resistance value of the first resistor R1, the second resistor R2 and the third resistor R3 in parallel is presented between the first detection port and the second detection port of the body controller 10; at this time, the body controller 10 can determine that the child seat has been installed normally.

[0094] When the first switch S1 is closed and it is detected that the conductive material S0 is not in contact with the second metal frame, the resistance value of the second resistor R2 appears between the first detection port and the second detection port of the body controller 10; at this time, the body controller 10 can determine that the child seat is placed on the seat but the child seat fixing port is not connected to the hard interface on the child seat; the body controller 10 can also prompt the driver and passengers through the human-computer interaction unit that there is a child seat on the seat but the child seat is not installed normally.

[0095] When the second switch S2 is closed and it is detected that there is no object on the seat in the vehicle, the first switch S1 is disconnected, and the conductive material S0 is usually not in contact with the second metal frame, and a resistance value of the first resistor R1 and the second resistor R2 in parallel is presented between the first detection port and the second detection port of the vehicle body controller 10; at this time, the vehicle body controller 10 can determine that the child seat is not placed on the seat, and the vehicle body controller 10 prompts the driver and passengers through the human-computer interaction unit that there is no child seat on the seat and the child seat is not installed.

[0096] Of course, after the vehicle is started, if the driver or passenger does not input a control command through the human-computer interaction unit to activate the seat detection function, the second switch S2 is disconnected. When an object is detected on the seat for installing a child seat, the first switch S1 is controlled to be closed, and the resistance value of the first resistor R1 is presented between the first detection port and the second detection port of the body controller 10; at this time, the body controller 10 can determine that there is a passenger sitting on the seat for installing a child seat.

[0097] After the vehicle is started, if the driver or passenger does not input a control command through the human-computer interaction unit to activate the seat detection function, the second switch S2 is disconnected. When no object is detected on the seat for installing the child seat, the first switch S1 is controlled to be disconnected, and an infinite resistance value is presented between the first detection port and the second detection port of the body controller 10; at this time, the body controller 10 can determine that there is no passenger sitting on the seat for installing the child seat.

[0098] In view of the above detection situation, the body controller 10 can determine that there is no passenger sitting in the seat for installing the child seat when the resistance value presented at the detection port is the first preset resistance value. The first preset resistance value is the resistance value corresponding to the seat for installing the child seat when the child seat detection function is not activated. Fig. 9 In the embodiment, the first switch S1 and the second switch S2 are both disconnected, and the resistance value between the first detection port and the second detection port of the vehicle body controller 10 is infinite, that is, the first preset resistance value is infinite.

[0099] In view of the above detection situation, the body controller 10 can also determine that a passenger is seated in the seat for installing the child seat when the resistance value presented at the detection port is a second preset resistance value. The second preset resistance value is the resistance value corresponding to the seat for installing the child seat when the child seat detection function is not activated. Fig. 9 In the embodiment, the first switch S1 is closed, the second switch S2 is open, and the resistance value between the first detection port and the second detection port of the vehicle body controller 10 is the resistance value of the first resistor R1, that is, the second preset resistance value is the resistance value of the first resistor R1.

[0100] In view of the above detection situation, the vehicle body controller 10 can also determine that there is no child seat placed on the seat where the child seat is installed when the resistance value presented at the detection port is a third preset resistance value. The third preset resistance value is the resistance value when there is no child seat on the seat where the child seat is installed when the child seat detection function is activated, and the child seat fixing port is not connected to the hard interface on the child seat. That is, Fig. 9 In the embodiment, the first switch S1 is disconnected, the second switch S2 is closed, the conductive material S0 is not in contact with the second metal frame, and the resistance value between the first detection port and the second detection port of the vehicle body controller 10 is the resistance value of the second resistor R2, that is, the third preset resistance value is the resistance value of the second resistor R2.

[0101] In view of the above detection situation, the vehicle body controller 10 can also determine that a child seat is placed on the seat where the child seat is installed, but the child seat fixing port and the hard interface are not connected when the resistance value presented at the detection port is a fourth preset resistance value; wherein the fourth preset resistance value is the resistance value when the child seat detection function is activated and a child seat is installed on the seat where the child seat is installed, but the child seat fixing port and the hard interface on the child seat are not connected. That is, Fig. 9In the embodiment, the first switch S1 is closed, the second switch S2 is closed, the conductive material S0 is not in contact with the second metal frame, and the resistance value between the first detection port and the second detection port of the vehicle body controller 10 is the resistance value of the first resistor R and the second resistor R2 in parallel, that is, the fourth preset resistance value is the resistance value of the first resistor R1 and the second resistor R2 in parallel.

[0102] In view of the above detection situation, the body controller 10 can also determine that a child seat is placed on the seat where the child seat is installed and the child seat fixing port is not connected to the hard interface when the resistance value presented at the detection port is the fifth preset resistance value; wherein the fifth preset resistance value is the resistance value when a child seat is placed on the seat where the child seat is installed and the child seat fixing port is connected to the hard interface on the child seat when the child seat detection function is activated. That is, Fig. 9 In the embodiment, the first switch S1 is closed, the second switch S2 is closed, the conductive material S0 is in contact with the second metal frame, and the resistance value between the first detection port and the second detection port of the vehicle body controller 10 is the resistance value of the first resistor R1, the second resistor R2 and the third resistor R3 in parallel, that is, the third preset resistance value is the resistance value of the first resistor R1, the second resistor R2 and the third resistor R3 in parallel. The first preset resistance value to the fifth preset resistance value are all different.

[0103] In addition, in order to achieve the above-mentioned purpose, the present invention also provides a vehicle, in which the above-mentioned child seat installation status detection system is arranged.

[0104] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A child seat installation status detection system, characterized in that: The child seat installation status detection system includes: a body controller and an interface detection circuit; The interface detection circuit includes: a conductive material disposed above a first metal frame in a child seat fixing port; The first metal frame is connected to the detection port and the power supply of the vehicle body controller; the child seat fixing port is used to fix the hard interface on the child seat; The interface detection circuit is used to output a corresponding first electrical parameter to the detection port of the vehicle body controller according to the contact state between the second metal frame and the conductive material in the child seat; The vehicle body controller is used to determine the installation status of the child seat according to the first electrical parameter at the detection port.

2. The child seat installation status detection system according to claim 1, characterized in that: The child seat installation status detection system further includes: an object detection circuit; The object detection circuit is connected to the detection port of the vehicle body controller and a power supply, and the object detection circuit is arranged at a seat for installing the child seat; The object detection circuit is used to output a corresponding second electrical parameter to a detection port of the vehicle body controller according to whether there is an object on the seat; The vehicle body controller is further used to determine the installation status of the child seat according to the first electrical parameter and the second electrical parameter.

3. The child seat installation status detection system according to claim 2, characterized in that: The object detection circuit includes: a first switch and a first resistor; One end of the first resistor is connected to the first detection port of the body controller and the negative power supply, the second end of the first resistor is connected to the first end of the first switch, and the second end of the first switch is connected to the second detection port of the body controller and the positive power supply.

4. The child seat installation status detection system according to claim 2, characterized in that: The child seat installation status detection system further includes: a detection control circuit: The first end of the detection control circuit is connected to the interface detection circuit, the second end is respectively connected to the object detection circuit and the detection port of the vehicle body controller, and the third end is connected to the human-computer interaction unit; The detection control circuit is used to control the connection between the interface detection circuit and the vehicle body controller according to the control instruction input by the human-computer interaction unit.

5. The child seat installation status detection system according to claim 4, characterized in that: The detection control circuit is further used to output a corresponding third electrical parameter to the detection port of the body controller according to the contact state between the second metal skeleton and the conductive material together with the interface detection circuit when the connection between the interface detection circuit and the body controller is turned on; The vehicle body controller is further used to determine the installation status of the child seat according to the third electrical parameter and the second electrical parameter.

6. The child seat installation status detection system according to claim 5, characterized in that: The detection control circuit includes: a second resistor and a second switch; The first end of the second resistor is connected to the first detection port of the body controller, the second end of the second resistor is connected to the first end of the second switch, the second end of the second switch is respectively connected to the second detection port of the body controller and the object detection circuit, and the third end of the second switch is connected to the human-computer interaction unit.

7. The child seat installation status detection system according to claim 5, characterized in that: The child seat installation status detection system further includes: a short circuit protection circuit; The short circuit protection circuit is respectively connected to the interface detection circuit and the detection control circuit; The short-circuit protection circuit is used to prevent a branch circuit between the interface detection circuit and the body controller from being short-circuited when the connection between the interface detection circuit and the body controller is turned on.

8. The child seat installation status detection system according to claim 7, characterized in that: The short circuit protection circuit comprises: a third resistor; One end of the third resistor is connected to the interface detection circuit, and the other end is connected to the detection control circuit.

9. The child seat installation status detection system according to claim 7, characterized in that: Also includes at least one of the following: The vehicle body controller is further configured to determine that no passenger is seated in the seat for installing the child seat when the resistance value presented at the detection port is a first preset resistance value; The vehicle body controller is further configured to determine that a passenger is seated in the seat for installing the child seat when the resistance value presented at the detection port is a second preset resistance value; The vehicle body controller is further configured to determine that no child seat is placed on the seat where the child seat is installed when the resistance value presented at the detection port is a third preset resistance value; The vehicle body controller is further configured to determine that a child seat is placed in the seat where the child seat is installed but the child seat fixing port is not connected to the hard interface when the resistance value presented at the detection port is a fourth preset resistance value; The vehicle body controller is further configured to determine that a child seat is placed on the seat where the child seat is installed and the child seat fixing port is not connected to the hard interface when the resistance value presented at the detection port is a fifth preset resistance value; Wherein, the first to fifth preset resistance values ​​are all different.

10. A vehicle, characterized in that: The vehicle comprises: a child seat installation status detection system according to any one of claims 1 to 9.

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