Composite early warning method and system for sleeping berth rest of passengers in driving and vehicle

Abstract

The invention discloses a compound early warning method and system for sleeping berth rest of passengers in driving and a vehicle, and belongs to the technical field of vehicles. The method comprises the following steps: acquiring a driving state signal of a vehicle and a monitoring signal of at least one sensor arranged in a sleeping berth area of the vehicle in real time; when the driving state signal indicates that the vehicle is in a driving state and the monitoring signal meets a preset alarm condition, an early warning action is triggered; the early warning action comprises giving an alarm and / or executing vehicle speed limitation. Through double judgment of the driving state and the sleeping berth state, conversion from passive warning to active intervention is achieved, the major potential safety hazard that passengers use the sleeping berths for rest illegally in the driving process can be effectively and reliably eradicated, and meanwhile the system has the advantages of being low in cost and easy to integrate.

Description

Technical Field

[0001] This application belongs to the field of vehicle technology, specifically relating to a composite early warning method, system, and vehicle for passenger sleeper rest during driving. Background Technology

[0002] With the development of the logistics and transportation industry, the driving comfort and safety of long-haul freight trucks are receiving increasing attention. To address driver fatigue, light truck models equipped with high-roof double sleeper berths have been designed, allowing drivers and passengers to take temporary rest in the lower berth (usually formed by folding down the driver and passenger seats) when the vehicle is parked, or to sleep overnight in the upper berth, greatly improving rest conditions. However, this convenience has also brought new safety hazards.

[0003] In practical use, especially in scenarios where two drivers take turns driving, it is possible for one person to drive while the other illegally rests in the upper sleeper berth. Because the upper sleeper berth is positioned high and lacks a strong and effective restraint device similar to a seatbelt, in the event of emergency braking or a collision, the occupants in the sleeper berth may be thrown out due to the enormous inertia and violently impact the windshield, posing a significant safety hazard. Therefore, OEMs explicitly prohibit the use of the upper sleeper berth while the vehicle is in motion.

[0004] Currently, the main preventative measures against this risk are to explicitly stipulate it in the vehicle's owner's manual and affix safety warning signs such as "Do Not Use While Driving" near the sleeper area. However, this passive warning method, which relies on passengers' self-discipline, has significant shortcomings: the warning signs lack binding force, especially when passengers have weak safety awareness or take chances, and cannot prevent passengers from violating regulations; existing technology lacks real-time intervention capabilities, and cannot monitor and proactively intervene when violations occur, only able to trace the incident after it happens, thus failing to play a preventative role; at the same time, there are also difficulties in supervision and tracing, and once an accident occurs due to the unauthorized use of the sleeper berth, it is difficult to obtain objective evidence to prove that the passenger was in a violation at the time of the accident, making it difficult to determine liability.

[0005] Therefore, a technical solution is needed that can proactively and reliably monitor the sleeper berth usage status during train operation, and can issue timely warnings or even take mandatory intervention measures to effectively eliminate this major safety hazard. Summary of the Invention

[0006] This application provides a method, system, and vehicle for combined early warning of passenger sleeper berth rest during driving, which solves at least one of the above-mentioned technical problems.

[0007] The technical solution adopted in this application is as follows: A composite early warning method for passengers resting in sleeper berths while traveling includes the following steps: Acquire vehicle driving status signals; Acquire monitoring signals from at least one sensor located in the sleeper area of ​​the vehicle; When the driving status signal indicates that the vehicle is in motion, and the monitoring signal meets the preset alarm conditions, an early warning action is triggered. The warning actions include issuing an alarm and / or enforcing speed limits.

[0008] As an optional implementation, the sensor includes a pressure sensor; The pressure sensor is installed on the support structure of the berth and is used to monitor the pressure borne by the berth. The monitoring signal meets the preset alarm conditions, including: the pressure value monitored by the pressure sensor is greater than or equal to a first preset threshold.

[0009] As an optional implementation, the first preset threshold is 10 kg.

[0010] As an optional implementation, the sensor includes an infrared temperature sensor; The infrared temperature sensor is installed in the protective netting area of ​​the sleeper berth to monitor infrared radiation within the protective netting area; The monitoring signal meets the preset alarm conditions, including: the temperature value monitored by the infrared temperature sensor is within the preset temperature range.

[0011] As an optional implementation, the preset temperature range is 35°C to 42°C.

[0012] As an optional implementation, the driving status signal is a vehicle speed signal; The vehicle being in motion includes the vehicle speed being greater than 0 km / h.

[0013] As an optional implementation, the warning action further includes: recording the occurrence information of the warning action, the occurrence information including alarm type, trigger time, and / or vehicle speed.

[0014] As an optional implementation, the speed limit includes controlling the vehicle's maximum speed to not exceed 10 km / h within a preset time period.

[0015] This application also provides a combined early warning system for passenger sleeper berth rest during train operation, used to implement the method described in any of the above claims, including: The controller is used to receive and process the driving status signal and the monitoring signal; A driving status detection module, connected to the controller, is used to detect whether the vehicle is in the driving state; A sensor, located in the sleeper area and connected to the controller, is used to monitor the sleeper status. The early warning execution module is connected to the controller and is used to execute the early warning action according to the instructions of the controller.

[0016] This application also includes, in another aspect, a vehicle comprising the aforementioned passenger sleeper rest composite early warning system.

[0017] Due to the adoption of the above technical solution, the beneficial effects achieved by this application are as follows: This application's solution addresses the safety blind spot where passive warning signs cannot effectively prevent passengers from using sleeper berths while the vehicle is in motion, upgrading the safety management strategy from passive warnings that rely on the self-awareness of personnel to proactive intervention enforced by the system.

[0018] Relying on manual regulations and warning stickers is almost ineffective for passengers with weak safety awareness or those who take chances. This method, however, uses a dual signal confirmation mechanism based on both driving and sleeper berth status. When both conditions are met, an automatic warning is triggered. This not only prohibits dangerous behavior but also ensures that the system immediately detects and stops it when it occurs. It shifts from post-event intervention to in-event intervention, preventing passengers from lying down in the sleeper berth while the vehicle is in motion, thus eliminating accidents caused by sudden braking or other emergencies.

[0019] Furthermore, the warning actions defined, including issuing alarms and / or enforcing speed limits, provide a hierarchical and configurable safety response strategy. Issuing alarms can immediately alert the driver and sleeper occupants, prompting them to correct dangerous behavior. Enforcing speed limits, as a mandatory measure, can proactively minimize the vehicle's risk level if occupants do not respond to audible alarms in a timely manner. This allows the method to adapt to the safety level requirements of different vehicle models, achieving a higher level of safety protection. Attached Figure Description

[0020] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings: Figure 1 This is a flowchart illustrating the triggering of an early warning action in one embodiment of the present invention; Figure 2 This is a schematic diagram of a sleeper berth structure in one embodiment of the present invention; Figure 3 This is a schematic diagram showing the position of the pressure sensor in one embodiment of the present invention; Figure 4 This is a schematic diagram showing the location of the infrared temperature sensor in one embodiment of the present invention.

[0021] Explanation of reference numerals in the attached figures: 1-Upper berth, 2-Lower berth, 3-Supporting structure, 4-Pressure sensor, 5-Infrared temperature sensor, 6-Safety net. Detailed Implementation

[0022] To more clearly illustrate the overall concept of this application, a detailed explanation is provided below with reference to the accompanying drawings.

[0023] Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below. It should be noted that, unless otherwise specified, the embodiments of this application and the features thereof can be combined with each other.

[0024] Furthermore, it should be understood in the description of this application that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0025] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0026] In this application, unless otherwise expressly specified and limited, the "above" or "below" of the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. In the description of this specification, references to terms such as "an embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples.

[0027] This application provides a composite early warning method for passenger sleeper rest during train operation, such as... Figure 1 As shown, it includes the following steps: Acquire vehicle driving status signals; Acquire monitoring signals from at least one sensor located in the sleeper area of ​​the vehicle; When the driving status signal indicates that the vehicle is in motion, and the monitoring signal meets the preset alarm conditions, a warning action is triggered. Warning actions include issuing alarms and / or enforcing speed limits.

[0028] In this application, the system continuously acquires driving status signals from the vehicle bus (such as the CAN bus) to determine in real time whether the vehicle is in motion. Simultaneously, the system acquires monitoring signals from one or more sensors pre-integrated into the sleeper area of ​​the vehicle. The vehicle processing unit (such as an onboard T-BOX or VCU) processes these two signals in parallel and performs logical judgment: a warning action is triggered only when it is confirmed that the vehicle is in motion and the monitoring signal in the sleeper area simultaneously exceeds a preset safety threshold. The warning action is specifically defined as issuing an alarm and / or implementing a speed limit, which can be done through audible warnings to passengers, direct intervention in the vehicle's powertrain to forcibly reduce speed, or both simultaneously to address dangerous situations.

[0029] This application's solution addresses the safety blind spot where passive warning signs cannot effectively prevent passengers from using sleeper berths while the vehicle is in motion, upgrading the safety management strategy from passive warnings that rely on the self-awareness of personnel to proactive intervention enforced by the system.

[0030] Relying on manual regulations and warning stickers is almost ineffective for passengers with weak safety awareness or those who take chances. This method, however, uses a dual signal confirmation mechanism based on both driving and sleeper berth status. When both conditions are met, an automatic warning is triggered. This not only prohibits dangerous behavior but also ensures that the system immediately detects and stops it when it occurs. It shifts from post-event intervention to in-event intervention, preventing passengers from lying down in the sleeper berth while the vehicle is in motion, thus eliminating accidents caused by sudden braking or other emergencies.

[0031] Furthermore, the warning actions defined, including issuing alarms and / or enforcing speed limits, provide a hierarchical and configurable safety response strategy. Issuing alarms can immediately alert the driver and sleeper occupants, prompting them to correct dangerous behavior. Enforcing speed limits, as a mandatory measure, can proactively minimize the vehicle's risk level if occupants do not respond to audible alarms in a timely manner. This allows the method to adapt to the safety level requirements of different vehicle models, achieving a higher level of safety protection.

[0032] In one embodiment, the sensor includes a pressure sensor 4; Pressure sensor 4 is installed on the support structure 3 of the berth to monitor the pressure borne by the berth; The monitoring signal meets the preset alarm conditions, including: the pressure value monitored by pressure sensor 4 is greater than or equal to the first preset threshold.

[0033] The sensor is set as a pressure sensor 4 and is installed on the support structure 3 of the sleeper berth (such as the mounting bracket between the sleeper berth frame and the vehicle body). When a passenger lies down, their weight is directly applied to the berth surface and transmitted to the pressure sensor 4 through the support structure 3. The pressure sensor 4 converts the physical pressure into an electrical signal and transmits it to the controller.

[0034] Human body weight is a stable and significant physical quantity, and pressure sensor 4 can directly and accurately monitor this signal. It is minimally affected by ambient light, dust, fog, etc., and has extremely high reliability. Secondly, by cleverly placing the sensor on the support structure 3 rather than the berth surface, it can sense changes in the load-bearing capacity of the entire berth, achieving comprehensive monitoring without blind spots. No matter where the passenger lies in the berth, it can be effectively detected. Finally, this solution is technologically mature and cost-effective. Pressure sensor 4 is widely used in the automotive industry (such as seat occupancy detection), facilitating rapid integration and mass production, providing a stable and economical foundation for the entire early warning system.

[0035] Preferably, the first preset threshold is 10 kg.

[0036] A specific, quantified trigger threshold is set for the pressure alarm. During system calibration, the controller program compares the value read in real time by pressure sensor 4 with this first preset threshold. If the value is ≥10kg, one of the alarm conditions is met.

[0037] Setting a specific threshold of 10kg achieves both differentiation capability and false alarm prevention, distinguishing between "placing luggage and miscellaneous items" and "person lying down." It's common for lightweight items like blankets and toolboxes to be placed on the sleeper berth while the vehicle is in motion; their weight is usually far below 10kg, preventing the system from triggering and avoiding frequent false alarms that could interfere with driving. However, when an adult (even a slim one) lies down on sleeper berth 1, their partial or total weight will inevitably far exceed this threshold, ensuring an alarm is triggered and eliminating the risk of missed alarms, thus striking a balance between sensitivity and specificity.

[0038] In another embodiment, the sensor includes an infrared temperature sensor 5; Infrared temperature sensor 5 is installed in the area of ​​the protective net 6 of the berth to monitor infrared radiation in the area of ​​the protective net 6. The monitoring signal meets the preset alarm conditions, including: the temperature value monitored by infrared temperature sensor 5 is within the preset temperature range.

[0039] As another specific implementation, it can also be used in conjunction with pressure sensor 4. An infrared temperature sensor 5 is used and positioned within the protective netting 6 area of ​​the berth. The infrared temperature sensor 5 senses the surface temperature of objects within its field of view by detecting infrared radiation of a specific wavelength and sends this temperature signal to the controller.

[0040] This system provides a non-contact, biometric-based monitoring method that does not rely on physical contact. It can detect individuals who have entered the protective netting area (6 area) even if they are not fully submerged on the sensor. This complements the pressure sensor (4) perfectly, providing redundancy and significantly enhancing the system's detection rate. Secondly, this solution offers additional safety benefits: the infrared temperature sensor (5)'s temperature sensitivity allows it to be used indirectly for early fire warning. If an abnormally high temperature point appears in the sleeping area due to a short circuit or cigarette butt, the system may trigger an alarm even if no one is lying down, thus preventing a fire and achieving multi-functionality. This further enhances the practicality of the entire early warning system.

[0041] Preferably, the preset temperature range is 35°C to 42°C.

[0042] The "preset temperature range" is defined as 35℃ to 42℃. The controller program compares the temperature value read by the infrared temperature sensor 5 with this range. If the value falls within this range, it is determined that a human body has been detected. Limiting the detection to the core human body temperature range (35℃-42℃) results in high recognition accuracy and anti-interference capability. This range eliminates most heat sources that could cause false alarms. For example, in summer, the surface temperature of a sleeper berth exposed to the sun may be very high, but it usually does not remain precisely within the human body temperature range; the temperature characteristics of heat sources such as hot air in the vehicle or hot water cups are also different. By locking onto this narrow and distinctive biological temperature band, the system can confirm the target as a human body with a very high probability, rather than other hot objects, thereby ensuring the reliability and authority of the infrared monitoring solution and avoiding system malfunctions or false alarms caused by fluctuations in ambient temperature. In one embodiment, the driving status signal is the vehicle speed signal; The vehicle is in motion, including when the speed is greater than 0 km / h.

[0043] The criterion for determining "driving status" is clearly defined as a vehicle speed greater than 0 km / h. The controller directly reads the vehicle speed signal from the vehicle's CAN bus and performs a simple logical judgment (vehicle speed > 0). The vehicle speed signal is one of the most basic and reliable status parameters of the vehicle, and using it as a criterion avoids ambiguity. As long as the wheels are turning, regardless of the speed (such as slow traffic), the system remains alert, ensuring full-time coverage of safety monitoring. Simultaneously, when the vehicle is completely stationary (vehicle speed = 0), the system automatically de-escalates, allowing passengers to normally get on and off the berth or organize their belongings. This reflects the system's user-friendly design, avoids interference with normal operation while parked, and ensures a balance between user experience and safety functions.

[0044] As a preferred implementation method, the warning action also includes: recording the occurrence information of the warning action, including the alarm type, trigger time, and / or vehicle speed.

[0045] A data logging function has been added to the system. When a warning is triggered, the controller writes the recorded "occurrence information" (such as: whether the alarm type is "pressure" or "infrared," the trigger time is "2025-10-27 14:30:05," and the vehicle speed at the time of triggering) into non-volatile memory. This enhances the system's traceability and legal evidentiary value, moving beyond a purely instantaneous warning. After a safety incident, these records can accurately reconstruct the scene, proving whether the driver or passenger violated regulations, providing irrefutable evidence for liability determination and effectively preventing disputes. Furthermore, for fleet managers, this data is a valuable safety management tool, used to analyze drivers' driving habits and violation frequency, enabling targeted safety education and training, further improving overall safety levels from a management perspective. Recording "vehicle speed" is particularly crucial, proving that violations occurred at high speeds, a high-risk condition, thus strengthening the persuasiveness of the evidence.

[0046] Furthermore, the implementation of speed limits includes controlling the maximum speed of the vehicle to not exceed 10 km / h within a preset time period.

[0047] The action of "enforcing the speed limit" has been refined, specifying that the maximum speed should be controlled below 10 km / h within a preset time (e.g., 20 seconds). In practice, the controller sends the maximum speed limit command to the engine management system (ECU) or vehicle control unit (VCU) via the CAN bus.

[0048] The beneficial effects of this scheme lie in the rationality and efficiency of its mandatory intervention, upgrading the warning from a reminder to a control measure, forming a technical barrier that drivers cannot ignore. Mandating a speed limit of 10 km / h ensures that the vehicle immediately escapes the dangerous high-speed state, significantly reducing the severity of potential accidents, while also allowing the vehicle to move to the side of the road, avoiding secondary risks from sudden braking or stalling (as on highways). Simultaneously, the "preset time" limit (e.g., 20 seconds) provides the driver with a reasonable reaction window to correct errors, demonstrating that the system design, while ensuring safety, also considers practical feasibility and human-centered design.

[0049] This application also provides a combined early warning system for passenger sleeper berth rest during train operation, used to implement the method described in any of the above, including: The controller is used to receive and process vehicle status signals and monitoring signals; The vehicle status detection module, connected to the controller, is used to detect whether the vehicle is in motion. Sensors, installed in the sleeper area and connected to the controller, are used to monitor the sleeper status; The early warning execution module is connected to the controller and is used to execute early warning actions according to the controller's instructions.

[0050] This application also includes, in another aspect, a vehicle comprising the aforementioned combined early warning system for passenger sleeper berth rest during driving.

[0051] It should be noted that this application solution applies to vehicles equipped with an upper sleeper berth 1. In this application, "sleeper berth" specifically refers to the upper sleeper berth 1. Both the pressure sensor 4 and the infrared temperature sensor 5 are located on the upper sleeper berth 1 and are connected by a wiring harness. Figures 2 to 4 As shown, the upper berth 1 is fixed to the cab by a mounting bracket as a support structure 3. The pressure sensor 4 and its wiring harness are installed at this mounting bracket. To ensure personnel safety, a protective net 6 is installed on the open side of the upper berth 1, and the infrared temperature sensor 5 and its wiring harness are installed at the protective net 6.

[0052] Furthermore, in one specific embodiment of this application, the alarm can be issued in ways including but not limited to: issuing a warning sound signal and simultaneously displaying a window prompt on the human-computer interaction screen.

[0053] For example, when the vehicle speed is greater than 0, if the detected pressure is greater than or equal to the first preset threshold, the system will prompt "Sleeper berth pressure is too high, speed will be limited to 10km / h within 20 seconds". The alarm will automatically stop after the pressure decreases to below the first preset threshold. If the detected temperature is within the preset temperature range, the system will prompt "Sleeper berth area temperature is too high, speed will be limited to 10km / h within 20 seconds". The alarm will automatically stop after the temperature drops to below 35℃.

[0054] For any parts not mentioned in this application, existing technologies may be used or referenced.

[0055] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0056] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A composite early warning method for passengers resting in sleeper berths while traveling, characterized in that, Includes the following steps: Acquire vehicle driving status signals; Acquire monitoring signals from at least one sensor located in the sleeper area of ​​the vehicle; When the driving status signal indicates that the vehicle is in motion, and the monitoring signal meets the preset alarm conditions, an early warning action is triggered. The warning actions include issuing an alarm and / or enforcing speed limits.

2. The combined early warning method for passenger sleeper rest during train operation according to claim 1, characterized in that, The sensor includes a pressure sensor; The pressure sensor is installed on the support structure of the berth and is used to monitor the pressure borne by the berth. The monitoring signal meets the preset alarm conditions, including: the pressure value monitored by the pressure sensor is greater than or equal to a first preset threshold.

3. The combined early warning method for passenger sleeper rest during train operation according to claim 2, characterized in that, The first preset threshold is 10 kg.

4. The combined early warning method for passenger sleeper rest during train operation according to claim 1, characterized in that, The sensor includes an infrared temperature sensor; The infrared temperature sensor is installed in the protective netting area of ​​the sleeper berth to monitor infrared radiation in that area. The monitoring signal meets the preset alarm conditions, including: the temperature value monitored by the infrared temperature sensor is within the preset temperature range.

5. The combined early warning method for passenger sleeper rest during train operation according to claim 4, characterized in that, The preset temperature range is 35°C to 42°C.

6. The combined early warning method for passenger sleeper rest during train operation according to any one of claims 1 to 5, characterized in that, The driving status signal is the vehicle speed signal; The vehicle being in motion includes a speed greater than 0 km / h.

7. The combined early warning method for passenger sleeper rest during train operation according to any one of claims 1 to 5, characterized in that, The warning action also includes recording the occurrence information of the alarm event, including the alarm type, trigger time, and / or vehicle status.

8. The combined early warning method for passenger sleeper rest during train operation according to any one of claims 1 to 5, characterized in that, The speed limit includes controlling the vehicle's maximum speed to be less than 10 km / h within a preset time after the alarm is triggered.

9. A composite early warning system for passenger sleeper rest during train operation, used to implement the method as described in any one of claims 1 to 8, characterized in that, include: The controller is used to receive and process the driving status signal and the monitoring signal; A driving status detection module, connected to the controller, is used to detect whether the vehicle is in the driving state; A sensor, located in the sleeper area and connected to the controller, is used to monitor the sleeper status. The early warning execution module is connected to the controller and is used to execute the early warning action according to the instructions of the controller.

10. A vehicle, characterized in that, It includes the passenger sleeper rest composite early warning system as described in claim 9.

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