Safety belt system and vehicle

Abstract

The application discloses a safety belt system and a vehicle, and belongs to the technical field of vehicle safety, and comprises a safety belt body, a buckle, a retractor, and a processor chip, wherein the safety belt body comprises a conductive layer; the buckle is connected with the conductive layer; the retractor comprises a winding drum and a conductive block, the winding drum is used for winding the safety belt body, the conductive block is connected with the conductive layer, and the conductive block is connected with a voltage source; the lock catch comprises a voltage dividing resistor, the buckle is connected with the voltage dividing resistor in the case that the buckle is in engagement connection with the lock catch, the voltage dividing resistor is grounded; and the voltage collecting port of the processor chip is connected with the voltage dividing resistor. When the buckle is connected with the lock catch, the voltage dividing resistor, the buckle, the conductive layer, the conductive block and the voltage source form a loop, the processor chip monitors the voltage across the voltage dividing resistor through the voltage collecting port, the state of the safety belt is judged, the driver or passenger is prevented from avoiding the safety belt unfastening alarm by various means, and the safety of the safety belt is improved.

Description

Technical Field

[0001] This application relates to the field of vehicle safety technology, and more particularly to a seat belt system and a vehicle. Background Technology

[0002] The seatbelt status for drivers and passengers is primarily detected by checking the buckle insertion or the distance the seatbelt has been pulled out. However, this type of seatbelt system has safety flaws, which compromise safety. Utility Model Content

[0003] A seatbelt system and vehicle are provided to address the aforementioned technical problems.

[0004] To achieve the above objectives, in a first aspect, a seatbelt system is provided, comprising:

[0005] A seat belt body, the seat belt body including a conductive layer;

[0006] A snap fastener, wherein the snap fastener is connected to the conductive layer;

[0007] A retractor, comprising a drum and a conductive block, the drum being used to wind the seat belt body, the conductive block being connected to the conductive layer, and the conductive block being connected to a voltage source;

[0008] The latch includes a voltage divider resistor. When the buckle is engaged with the latch, the buckle is connected to the voltage divider resistor, and the voltage divider resistor is grounded.

[0009] A processor chip, wherein the voltage acquisition port of the processor chip is connected to the voltage divider resistor.

[0010] In conjunction with the first aspect, the resistance values ​​of both the voltage divider resistor and the conductive layer are not less than 10KΩ.

[0011] In conjunction with the first aspect, the retractor has an opening, and the conductive block is located at the opening.

[0012] In conjunction with the first aspect, the seat belt body has a first connecting end and a second connecting end, the first connecting end passing through the opening and connecting to the drum, and the second connecting end being fixed.

[0013] In conjunction with the first aspect, the seat belt body further includes a first insulating layer and a second insulating layer, with the conductive layer located between the first insulating layer and the second insulating layer.

[0014] In conjunction with the first aspect, the first insulating layer has a first slot, and at least a portion of the structure of the conductive block passes through the first slot and is connected to the conductive layer.

[0015] In conjunction with the first aspect, the first insulating layer or the second insulating layer has a second slot, and at least a portion of the structure of the snap fastener passes through the second slot and is connected to the conductive layer.

[0016] In conjunction with the first aspect, the voltage range of the voltage source includes 12V-36V.

[0017] In conjunction with the first aspect, the conductive layer includes any one or more of carbon film high-resistivity materials, metal film high-resistivity materials, and ceramic-based high-resistivity materials.

[0018] Secondly, embodiments of this application provide a vehicle including a seatbelt system as described in any of the first aspects.

[0019] One of the above technical solutions has the following advantages or beneficial effects:

[0020] This application provides a seat belt system, including: a seat belt body, the seat belt body including a conductive layer; a buckle, the buckle being connected to the conductive layer; a retractor, the retractor including a drum and a conductive block, the drum being used to wind the seat belt body, the conductive block being connected to the conductive layer, and the conductive block being connected to a voltage source; a latch, the latch including a voltage divider resistor, the buckle being connected to the voltage divider resistor when the buckle and the latch are engaged, the voltage divider resistor being grounded; and a processor chip, the voltage acquisition port of the processor chip being connected to the voltage divider resistor. The seat belt system provided in this application embodiment has a conductive layer in the seat belt body, which is connected to the buckle. A conductive block connected to a voltage source is provided in the retractor, and a voltage divider resistor connected to ground is provided in the buckle. When the buckle and the buckle are connected, the voltage divider resistor, buckle, conductive layer, conductive block and voltage source form a power supply circuit. The processor chip monitors the voltage across the voltage divider resistor through the voltage acquisition port. This seat belt system can avoid the safety risks caused by drivers and passengers inserting metal buckles instead of buckles, or by directly inserting the seat belt into the buckle without the driver or passenger's knowledge, thereby improving safety. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of a seat belt system provided in an embodiment of this application;

[0023] Figure 2This is a schematic diagram of the longitudinal cross-sectional structure of the seat belt body provided in an embodiment of this application;

[0024] Figure 3 This is a schematic diagram of the equivalent circuit structure of a seat belt system provided in an embodiment of this application;

[0025] Figure 4 This is a partial structural diagram of the connection between the seat belt body and the conductive block provided in an embodiment of this application;

[0026] Figure 5 This is a partial longitudinal cross-sectional structural diagram of the connection between the seat belt body and the conductive block provided in an embodiment of this application;

[0027] Figure 6 This is a partial longitudinal cross-sectional structural diagram of the connection between the seat belt body and the conductive block, provided in another embodiment of this application.

[0028] Figure 7 This is a partial structural diagram of the connection between the seat belt body and the buckle provided in an embodiment of this application;

[0029] Figure 8 This is a partial longitudinal cross-sectional structural diagram of the connection between the seat belt body and the buckle provided in an embodiment of this application;

[0030] Figure 9 This is a partial longitudinal cross-sectional structural diagram of the connection between the seat belt body and the buckle, provided for another embodiment of this application.

[0031] Explanation of icon numbers:

[0032] 100 - Seat belt body; 110 - Conductive layer; 120 - First insulating layer; 121 - First slot; 122 - Second slot; 130 - Second insulating layer; 200 - Buckle; 300 - Retractor; 310 - Connecting rod; 400 - Buckle; 500 - Seat; 600 - Dummy model. Detailed Implementation

[0033] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0034] Furthermore, descriptions involving "first," "second," etc., in the embodiments of this application are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

[0035] like Figure 1 and Figure 2 As shown in the figure, this application proposes a seat belt system, including: a seat belt body 100, the seat belt body 100 including a conductive layer 110; a buckle 200, the buckle 200 being connected to the conductive layer 110; a retractor 300, the retractor 300 including a drum and a conductive block, the drum being used to wind the seat belt body 100, the conductive block being connected to the conductive layer 110, and the conductive block being connected to a voltage source; a latch 400, the latch 400 including a voltage divider resistor, the buckle 200 being connected to the voltage divider resistor when the buckle 200 and the latch 400 are engaged, the voltage divider resistor being grounded; and a processor chip, the voltage acquisition port of the processor chip being connected to the voltage divider resistor.

[0036] Specifically, the retractor 300 is the core component of the entire seatbelt system, enabling the retraction, extension, and locking of the seatbelt body 100. The retractor 300 includes a drum, a return spring, a locking mechanism, and a housing. The housing serves as the protective and securing frame for the retractor 300, typically made of metal or high-strength plastic. The housing has a hollow interior to house the drum, return spring, locking mechanism, and other components. The housing is externally bolted to the vehicle body or seat 500 frame, ensuring the overall stability of the retractor 300 and preventing damage to internal components from dust or impacts.

[0037] In this embodiment, the drum is an important carrier in the retractor 300. It is a cylindrical metal tube. One end of the seat belt body 100 is directly fixed to the drum. The retraction and extension of the seat belt body 100 are completely achieved by rotating the drum. For example, when the drum rotates clockwise, the seat belt body 100 is retracted, and when it rotates counterclockwise, the seat belt body 100 is pulled out.

[0038] In this embodiment, the return spring is the power source for automatically retracting the webbing. The return spring is typically a spiral spring (similar to the spring inside a measuring tape). One end of the return spring is fixed to the inside of the drum, and the other end is fixed to the housing of the retractor 300. When the seatbelt body 100 is pulled out, the rotation of the drum tightens the return spring and stores elastic potential energy; when the seatbelt body 100 is released, the return spring releases its potential energy, causing the drum to rotate in the opposite direction, automatically winding the seatbelt body 100 back onto the drum, keeping the seatbelt in contact with the body or seat 500.

[0039] In this embodiment, the locking mechanism is a safety component that prevents the seatbelt body 100 from being pulled out in an emergency. The locking mechanism consists of two parts: a triggering component and a locking component. The triggering component typically includes a centrifugal trigger and a pendulum trigger. The centrifugal trigger is mainly triggered by the centrifugal force of the vehicle's rapid acceleration or deceleration; the pendulum trigger is mainly triggered by the inertia of the vehicle's tilt and collision. The locking component typically includes a locking pawl and a ratchet. The ratchet is fixed on the drum and is a toothed metal disc. The locking pawl can rotate around an axis and is normally separated from the ratchet, but will lock into the teeth of the ratchet in an emergency.

[0040] In this embodiment, the buckle 200 includes a metal structure that is slidably disposed on and electrically connected to the conductive layer 110. When a passenger needs to fasten their seatbelt, the length of the seatbelt body 100 can be adjusted by sliding the buckle 200. The conductive block is electrically connected to the conductive layer 110 and is also connected to a voltage source. The voltage source is used to generate a stable voltage output, and it supplies voltage to the conductive layer 110 through the conductive block. When the buckle 200 engages with the latch 400, the buckle 200 forms an electrical connection with the voltage divider resistor. Since the voltage divider resistor is grounded, the voltage source, conductive block, conductive layer 110, buckle 200, latch 400, voltage divider resistor, and grounding terminal together constitute a power supply circuit (e.g., ...). Figure 3 As shown, R1 is the equivalent resistance of the conductive layer 110, and R2 is the equivalent resistance of the voltage divider resistor. The voltage generated by the voltage source is distributed across the conductive block, conductive layer 110, latch 200, latch 400, and voltage divider resistor. The processor chip obtains the voltage across the voltage divider resistor through the voltage acquisition port. Depending on the length of the conductive layer 110 pulled out, different voltages can be obtained across the voltage divider resistor. Since the resistance of the conductive block, latch 200, and latch 400 is relatively small, it can be ignored. If the resistance of the conductive layer 110 is RS, the resistance of the voltage divider resistor is RP, and the voltage generated by the voltage source is VS, then the voltage across the voltage divider resistor can be expressed as: VD = VS * RP (RS + RP).

[0041] It is worth noting that the processor chip is connected to the vehicle's MCU (Microcontroller Unit). The MCU can read the voltage of the voltage divider resistor in real time through the ADC (Analog to Digital Converter) pin. Based on the voltage value of the voltage divider resistor, it determines the length of the seat belt body 100 pulled out, thereby determining whether the seat belt body 100 is worn in the correct position. Before the vehicle leaves the factory, various dummy models 600 of different body types can be selected to wear the seat belts, and the seat 500 can be adjusted to the most forward, centered, and most rearward positions respectively. The voltage values ​​of each body type dummy model 600 in the three positions are recorded. The MCU summarizes all the collected voltage values ​​and determines the maximum and minimum voltage values ​​from all the data. The MCU stores these two voltage values ​​as calibration values ​​for the seat belt length.

[0042] It should be noted that, considering the existence of passengers or drivers with special body types, the seat belt length can be recalibrated during vehicle use. After ensuring that passengers with special body types are correctly wearing their seat belts, press the recalibration option on the vehicle's main unit. The main unit sends a command to the MCU via the CAN (Controller Area Network) bus. The MCU collects the current voltage value and compares it with the factory-set maximum and minimum voltage values. If the current voltage value is greater than the maximum voltage value, the MCU updates the maximum voltage value to the current value; if the current voltage value is less than the minimum voltage value, the MCU updates the minimum voltage value to the current value. During seat belt use, the system only considers the occupant to be correctly wearing the seat belt when the voltage value collected by the MCU is between the updated maximum and minimum voltage values. If the MCU cannot read the voltage, it indicates that the seat belt is not fastened, and the system issues an alarm sound. If the read voltage value is not between the maximum and minimum voltage values, it indicates that the seat belt is not fastened correctly, and the system will also issue an alarm. The alarm information is transmitted from the MCU to the vehicle's main unit via the CAN bus.

[0043] It is understood that the seat belt system provided in this application embodiment, by setting a conductive layer 110 in the seat belt body 100, the conductive layer 110 being connected to the buckle 200, setting a conductive block connected to a voltage source in the retractor 300, and setting a grounded voltage divider resistor in the buckle 400, when the buckle 200 and the buckle 400 are connected, the voltage divider resistor, buckle 200, conductive layer 110, conductive block, and voltage source form a power supply circuit. The processor chip monitors the voltage across the voltage divider resistor through a voltage acquisition port. When the voltage across the voltage divider resistor does not meet the set voltage range, it is determined that the seat belt is not fastened. This detection method avoids the safety risks caused by using metal buckles instead of buckle insertion, or by directly inserting the seat belt into the buckle without the driver or passenger's knowledge, thereby improving safety.

[0044] In this embodiment, the resistance values ​​of both the voltage divider resistor and the conductive layer 110 are not less than 10KΩ. Specifically, by setting the resistance values ​​of the voltage divider resistor and the conductive layer 110 to a large resistance of not less than 10KΩ, on the one hand, it is to create a difference in resistance values ​​with the conductive block, buckle 200, and latch 400, reducing the interference of the small resistances of the conductive block, buckle 200, and latch 400 on the voltage across the voltage divider resistor; on the other hand, using a large resistance design for the voltage divider resistor and the conductive layer 110 can reduce the current flowing through the conductive layer 110, thereby avoiding leakage of the seat belt during use and causing discomfort to the driver and passengers. It should be noted that in some embodiments, the resistance values ​​of the voltage divider resistor and the conductive layer 110 can also be less than 10KΩ, such as 9.5KΩ, 9KΩ, 8.5KΩ, and 8KΩ, etc. The specific values ​​can be selected according to the output voltage of the voltage source, the voltage divider resistor, and the design of the conductive layer 110. As long as interference is reduced and the current in the conductive layer 110 is reduced, the requirements of safety and comfort are met.

[0045] Understandably, by using a high-resistance design for the voltage divider resistor and conductive layer 110, the influence of other components on voltage division can be reduced, so that the voltage of the voltage source is mainly concentrated on the voltage divider resistor and conductive layer 110; at the same time, the current in the conductive layer 110 can be reduced to avoid the seat belt leakage affecting the driving experience.

[0046] In this embodiment, the retractor 300 has an opening, and a conductive block is located at the opening. Specifically, the conductive block is a metal block, including a support base and a connecting rod 310. The support base is fixedly connected to the housing of the retractor 300, and the connecting rod 310 is connected to the conductive layer 110. Notably, the support base is connected to a voltage source, and the voltage source outputs voltage to the conductive layer 110 through the support base and the connecting rod 310.

[0047] It is understandable that by placing the conductive block at the opening of the retractor 300, the seat belt body 100 can form pressure with the conductive block when it is pulled out, thereby ensuring that the conductive block and the conductive layer 110 can always be connected, and preventing the conductive block from separating from the conductive layer 110, which would cause the voltage source to be unable to form a circuit with the conductive layer 110.

[0048] like Figure 1 As shown in this embodiment, the seat belt body 100 has a first connecting end and a second connecting end. The first connecting end passes through an opening and connects to a reel, while the second connecting end is fixed. Specifically, the first connecting end of the seat belt body 100 passes through the opening of the retractor 300 and connects to the reel. When the seat belt body 100 is pulled outward, the reel rotates counterclockwise; when the seat belt body 100 is released, the reel rotates clockwise. The second connecting end of the seat belt body 100 is fixed to the seat 500 or the vehicle frame, thus forming a three-point structure when the occupants fasten their seat belts, improving the protective effect and ensuring the safety of the occupants.

[0049] Understandably, by fixing the first connecting end of the seat belt body 100 to the reel, safe pulling out and rewinding are achieved. By fixing the second connecting end of the seat belt body 100 to the seat 500 or the vehicle frame, the seat belt forms a three-point structure, which improves the stability and safety of the seat belt.

[0050] like Figure 2 As shown in this embodiment, the seat belt body 100 further includes a first insulating layer 120 and a second insulating layer 130, with a conductive layer 110 located between the first insulating layer 120 and the second insulating layer 130. Specifically, by providing the first insulating layer 120 and the second insulating layer 130, the conductive layer 110 is protected, preventing it from being scratched or broken due to prolonged exposure to the outside. This would cause inaccurate resistance values, resulting in the voltage across the voltage divider resistor deviating from the set maximum and minimum voltage values, thus leading to misjudgment. Simultaneously, wrapping the conductive layer 110 inside prevents direct contact between the driver and passengers, reducing corrosion from sweat and preventing discomfort caused by current when the hands touch the conductive layer 110.

[0051] It is understandable that wrapping the conductive layer 110 with the first insulating layer 120 and the second conductive layer 110 not only protects the conductive layer 110 from damage, breakage and corrosion, but also prevents the current in the conductive layer 110 from causing discomfort to the occupants.

[0052] like Figure 4 and Figure 5As shown, in this embodiment of the application, the first insulating layer 120 has a first slot 121, and at least a portion of the structure of the conductive block passes through the first slot 121 and connects to the conductive layer 110. Specifically, the first slot 121 extends along the length of the first insulating layer 120, and the connecting rod 310 of the conductive block is T-shaped, with the top crossbar of the T-shape passing through the first slot 121 and connecting to the inner conductive layer 110. When the seat belt body 100 is pulled out, the T-shaped connecting rod 310 can hook onto the first slot 121, preventing the connecting rod 310 from detaching from the conductive layer 110. It is worth noting that, as Figure 6 As shown, a first groove corresponding to the first slot 121 can also be provided on the conductive layer 110. The connecting rod 310 of the conductive block passes through the first groove and the first slot 121 in the opposite direction and is connected to the support base, so that the connection between the conductive block and the conductive layer 110 is more stable.

[0053] It is understandable that by providing a first slot 121 in the first insulating layer 120, the connecting rod 310 of the conductive block can extend into the interior of the first insulating layer 120 and the second insulating layer 130 to achieve electrical connection with the conductive layer 110, thus preventing the conductive block from being unable to form a power circuit with the latch 400 after being separated from the conductive layer 110.

[0054] like Figure 7 and Figure 8 As shown in the embodiment of this application, the first insulating layer 120 or the second insulating layer 130 has a second slot 122, and at least a portion of the structure of the buckle 200 passes through the second slot 122 and connects to the conductive layer 110. Specifically, the second slot 122 can be disposed in the first insulating layer 120, or the second slot 122 can be disposed in the second insulating layer 130. This embodiment of the application takes the second slot 122 being disposed in the first insulating layer 120 as an example. The second slot 122 extends along the length direction of the first insulating layer 120. A portion of the structure of the buckle 200 includes a T-shaped structure, and the top crossbar of the T-shaped structure passes through the second slot 122 and connects to the internal conductive layer 110. When the buckle 200 needs to engage with the buckle 400, the buckle 200 slides along the seat belt body 100, simultaneously causing the T-shaped structure of the buckle 200 to slide in the second slot 122, thereby preventing the buckle 200 from disengaging from the conductive layer 110. It is worth noting that, as Figure 9 As shown, a second groove corresponding to the second slot 122 can also be provided on the conductive layer 110. The T-shaped structure of the buckle 200 passes through the second groove and the second slot 122 in the opposite direction, making the connection between the buckle 200 and the conductive layer 110 more stable.

[0055] It is understandable that by providing a second slot 122 in the first insulating layer 120 or the second insulating layer 130, the T-shaped structure of the buckle 200 can extend into the interior of the first insulating layer 120 and the second insulating layer 130 to achieve electrical connection with the conductive layer 110, thus preventing the buckle 200 from being unable to form a power circuit with the latch 400 after separating from the conductive layer 110.

[0056] In this embodiment, the voltage range of the voltage source includes 12V-36V. Specifically, the safe voltage for the human body is 36V, therefore, the selectable voltage values ​​of the voltage source also include, but are not limited to, any one or any two of 13V, 14V, 15V, 16V, 18V, 20V, 22V, 25V, 28V, 30V, 31V, 32V, 33V, 34V, and 35V. When the voltage value of the voltage source is set close to 12V, if the resistance of the voltage divider resistor is 10KΩ and the conductive layer 110 is stretched to half its length with a resistance of 5KΩ, then according to Ohm's law, the current value in the circuit is calculated to be approximately 0.8mA. The current value is small, and even if a person touches it directly, they will not feel any discomfort. When the voltage value of the voltage source is set close to 36V, the voltage values ​​of the voltage divider on the conductive layer 110 and the voltage divider resistor are more accurate, which can refine the correspondence between the length of the seat belt body 100 and the voltage value.

[0057] Understandably, by controlling the voltage of the voltage source between 12V and 36V, not only is a closer correspondence established between the voltage value and the seat belt length, but it can also prevent leakage of the conductive layer 110 from affecting the comfort of the driver and passengers.

[0058] In this embodiment, the conductive layer 110 includes at least one of a carbon film high-resistivity material, a metal film high-resistivity material, and a ceramic-based high-resistivity material. Specifically, the length L, width D, and thickness H of the conductive layer 110 are limited according to the length, width, and thickness requirements of the seat belt body 100, respectively satisfying: 100cm≤L≤200cm; 1.0cm≤D≤3.0cm; 0.05cm≤H≤0.2cm. Correspondingly, the materials selected for the conductive layer 110 include carbon film high-resistivity materials, metal film high-resistivity materials, and ceramic-based high-resistivity materials.

[0059] In this embodiment, the carbon film high-resistivity material comprises: amorphous carbon, organic resin, and dopant, wherein the proportions of each component are as follows: amorphous carbon: 70%–95%, mainly used for conductivity; organic resin: 5%–20%, mainly used as a binder, such as phenolic resin and epoxy resin; dopant: 0.1%–5%, such as metal oxides, boron, or nitrogen. A specific feasible ratio includes: amorphous carbon (80%) + phenolic resin (18%) + TiO2 (2%), with a resistivity of approximately 5 × 10⁻⁶. 3Ω*m, resistance at target size = 5×10 3 Ω*m×(1m / 2×10 -5 m 2 ) = 2.5 × 10 8 Ω, meeting the requirement of greater than 10kΩ.

[0060] In this embodiment, the high-resistivity metal film material comprises nickel, chromium, aluminum, and dopant, wherein the proportions of each component are as follows: nickel (Ni): 30%–50%; chromium (Cr): 20%–40%; aluminum (Al): 5%–20%; dopant: 0.1%–3%, including silicon (Si) and titanium (Ti). A specific feasible ratio includes: Ni (40%) + Cr (35%) + Al (15%) + Si (1%) + dopant (3%), with a resistivity of approximately 200 Ω*m. The resistance at the target size is 200 Ω*m × (1m / 2 × 10⁻⁶). -5 m 2 ) = 1 × 10 7 Ω, meeting the requirement of greater than 10kΩ.

[0061] In this embodiment, the ceramic-based high-resistivity material comprises: aluminum oxide (Al2O3), silicon dioxide (SiC), and sintering aids, wherein the proportions of each component are as follows: aluminum oxide (Al2O3): 80%–98%, used as an insulating material; silicon dioxide (SiC): 2%–20%, used as a conductive material; sintering aids: 0.5%–5%, including manganese oxide (MgO) and silicon dioxide (SiO2); a specific feasible ratio includes: Al2O3 (95%) + SiC (4%) + MgO (1%), with a resistivity of approximately 5 × 10⁻⁶. 4 Ω*m, resistance at target size = 5×10 4 Ω*m×(1m / 2×10 -5 m 2 ) = 2.5 × 10 9 It meets the requirement of greater than 10kΩ and has excellent temperature and pressure resistance.

[0062] In summary, the seat belt system provided in this application reduces the current in the conductive layer 110 by using a high-resistance design for the voltage divider resistor and the conductive layer 110, thus preventing seat belt leakage from affecting the driving and riding experience. By fixing the second connecting end of the seat belt body 100 to the seat 500 or the vehicle frame, a three-point structure is formed, improving the stability and safety of the seat belt. Wrapping the conductive layer 110 with the first insulating layer 120 and the second conductive layer 110 not only protects the conductive layer 110 from damage, breakage, and corrosion, but also prevents current in the conductive layer 110 from causing discomfort to the occupants. By providing a first slot 121 and a second slot 122 in the first insulating layer 120 or the second insulating layer 130, the conductive block and the buckle 200 can extend into the interior of the first insulating layer 120 and the second insulating layer 130 to achieve electrical connection with the conductive layer 110, preventing the buckle 200 from being unable to form a power circuit with the buckle 400 after separating from the conductive layer 110. By controlling the voltage of the voltage source between 12V and 36V, leakage in the conductive layer 110 can be prevented from affecting the comfort of the occupants. When the buckle 200 is connected to the latch 400, the voltage divider resistor, buckle 200, conductive layer 110, conductive block, and voltage source form a power supply circuit. The processor chip monitors the voltage across the voltage divider resistor through the voltage acquisition port. When the voltage across the voltage divider resistor does not meet the set voltage range, it is determined that the seat belt is not fastened. This detection method avoids the safety risks associated with using metal buckles instead of buckle insertion, or with the seat belt being inserted directly into the latch without the driver or passenger's knowledge, thereby improving safety.

[0063] This application also provides a vehicle including a seatbelt system as provided in any of the above embodiments. Specifically, the working process and beneficial effects of the seatbelt system provided in this application have been described in detail in the above embodiments, and will not be repeated here.

[0064] The above description is merely an optional embodiment of this application and does not limit the patent scope of this application. Any equivalent structural transformations made based on the inventive concept of this application and the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this application.

Claims

1. A seatbelt system, characterized in that, include: The seat belt body (100) includes a conductive layer (110); A snap fastener (200) is connected to the conductive layer (110); A retractor (300) includes a spool and a conductive block. The spool is used to wind the seat belt body (100), and the conductive block is connected to the conductive layer (110) and a voltage source. The latch (400) includes a voltage divider resistor. When the buckle (200) is engaged with the latch (400), the buckle (200) is connected to the voltage divider resistor, and the voltage divider resistor is grounded. A processor chip, wherein the voltage acquisition port of the processor chip is connected to the voltage divider resistor.

2. The seatbelt system according to claim 1, characterized in that, The resistance values ​​of both the voltage divider resistor and the conductive layer (110) are not less than 10KΩ.

3. The seatbelt system according to claim 1, characterized in that, The retractor (300) has an opening, and the conductive block is located at the opening.

4. The seatbelt system according to claim 3, characterized in that, The seat belt body (100) has a first connecting end and a second connecting end, the first connecting end passing through the opening and connected to the drum, and the second connecting end being fixed to the vehicle frame.

5. The seatbelt system according to claim 1, characterized in that, The seat belt body (100) further includes a first insulating layer (120) and a second insulating layer (130), and the conductive layer (110) is located between the first insulating layer (120) and the second insulating layer (130).

6. The seatbelt system according to claim 5, characterized in that, The first insulating layer (120) has a first slot (121), and at least a portion of the structure of the conductive block passes through the first slot (121) and is connected to the conductive layer (110).

7. The seatbelt system according to claim 5, characterized in that, The first insulating layer (120) or the second insulating layer (130) has a second slot (122), and at least a portion of the structure of the buckle (200) passes through the second slot (122) and is connected to the conductive layer (110).

8. The seatbelt system according to claim 1, characterized in that, The voltage range of the voltage source includes 12V-36V.

9. The seatbelt system according to claim 1, characterized in that, The conductive layer (110) includes at least one of carbon film high-resistivity material, metal film high-resistivity material and ceramic-based high-resistivity material.

10. A vehicle, characterized in that, Includes the seat belt system as described in any one of claims 1 to 9.

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