A bus roof escape system and bus

Abstract

This invention relates to the field of passenger vehicles, and more particularly to a passenger vehicle roof escape system and a passenger vehicle. The passenger vehicle roof escape system of this invention includes an escape ladder installed beside the roof window. The escape ladder is a folding ladder or a telescopic ladder. It also includes an opening control system for driving the release and deployment of the escape ladder. The opening control system includes an opening timing decision module and an escape ladder opening drive module. The opening timing decision module includes a control decision module and a vehicle condition detection module. The vehicle condition detection module detects vehicle accident information and feeds the detection results back to the control decision module. The control decision module is connected to the escape ladder opening drive module and determines whether to open the escape ladder based on the detection results. The escape ladder opening drive module is used to release and deploy the escape ladder for passengers to climb. This passenger vehicle roof escape system can automatically release the escape ladder after a passenger vehicle accident, improving passenger escape efficiency.

Description

Technical Field

[0001] This invention relates to the field of buses, and more particularly to a bus roof escape system and a bus. Background Technology

[0002] With social progress and technological development, people have placed higher demands on the safety performance of passenger vehicles. Preventing major public hazards such as mass casualties due to passenger vehicle accidents is crucial. Analysis reveals that in accidents such as collisions or fires, passenger doors are often damaged to varying degrees and cannot be opened, preventing timely escape for passengers, which is a significant cause of injuries and fatalities. In addition to passenger doors and side escape windows, the roof ventilation window in buses can also be used as an escape route. However, because the roof ventilation window is relatively high above the bus floor, passengers cannot immediately escape through it, affecting escape efficiency. Therefore, improving passenger access to escape through the roof ventilation window has become a new research direction.

[0003] Existing technologies also offer similar design solutions to address the inconvenience of escaping through top windows. For example, Chinese utility model patents with authorization numbers CN201052760Y, CN202249564U, and CN201761334U disclose different escape skylights. These all involve installing escape ladders at the skylight. In the event of an accident requiring escape through the skylight, passengers open the escape ladder and climb out. While this commonly used method has a simple physical structure and relatively low manufacturing cost, its effectiveness in improving escape efficiency is limited due to the often chaotic situation at the scene of an accident and passengers' unfamiliarity with opening the escape ladder. Furthermore, improper operation can even render the escape ladder unusable, rendering it ineffective. Therefore, the actual practical effect of this existing method is unsatisfactory. Summary of the Invention

[0004] The purpose of this invention is to provide a bus roof escape system to solve the problem of inconvenient escape from the roof of existing buses. Furthermore, this invention also provides a bus using the aforementioned bus roof escape system to solve the problem of inconvenient escape in the event of an accident in existing buses.

[0005] The passenger vehicle roof escape system of the present invention includes an escape ladder for installation next to the roof window. The escape ladder is a folding ladder or a telescopic ladder. It also includes an opening control system for driving the escape ladder to release and unfold. The opening control system includes an opening timing decision module and an escape ladder opening drive module. The opening timing decision module includes a control decision module and a vehicle condition detection module. The vehicle condition detection module is used to detect vehicle accident information and feed the detection results back to the control decision module. The control decision module is controlled and connected to the escape ladder opening drive module, and determines whether to open the escape ladder based on the detection results. The escape ladder opening drive module is used to release and unfold the escape ladder for passengers to climb.

[0006] The bus roof escape system of the present invention can accurately determine the timing of releasing and deploying the escape ladder through the activation timing decision module. When an accident occurs in the bus and the set conditions for opening the escape ladder are met, the escape ladder can be automatically released through the escape ladder opening module without human operation. The system responds in a timely manner, buys passengers escape time, improves escape efficiency, and ensures passenger safety.

[0007] Furthermore, the vehicle condition detection module includes at least one of the following: an attitude sensing component for detecting the vehicle's posture, a fire sensing component for detecting whether a fire has occurred, and a water level sensing component for detecting wading conditions. By detecting these aspects of the vehicle condition, it is possible to accurately determine whether the bus has experienced an accident requiring escape through the roof window, providing reliable vehicle condition information and data support for the control decision module to make accurate decisions.

[0008] Furthermore, the vehicle condition detection module includes attitude sensing components, fire sensing components, and water level sensing components. By comprehensively judging the bus's attitude, the current fire situation, and the current water situation, multi-dimensional integrated decision-making can be performed, improving the accuracy of the decisions made by the control decision module.

[0009] Furthermore, the attitude sensing component includes a collision sensor and an angle sensor; the fire sensing component includes an in-vehicle fire sensor and an engine compartment fire sensor; and the water level sensing component includes a floor water level sensor and a roof water level sensor. Through sensors in different locations and with different functions, the accident status of the bus can be detected in a diverse and multi-dimensional manner, providing data support for the control decision module to make accurate decisions.

[0010] Furthermore, the control decision module controls the activation action of the escape ladder activation drive module under the following conditions:

[0011] When the vehicle is involved in a collision but does not overturn; or, when the vehicle is not involved in a collision, there is no fire inside the passenger compartment but a fire in the engine compartment; or, when the vehicle is not involved in a collision, the bottom of the vehicle reaches a certain water level, but the top of the vehicle is not flooded. In these situations, releasing the escape ladder will allow passengers to escape relatively safely through the top window.

[0012] More specifically, the control decision module controls the escape ladder opening drive module in the following ways:

[0013] When the collision sensor detects a collision, if the angle sensor does not detect a rollover, the escape ladder opening drive module controls the escape ladder to open; if the angle sensor detects a rollover, the escape ladder will not open.

[0014] If the collision sensor does not detect a collision, but the fire sensor inside the vehicle detects a fire, the escape ladder will not open. If the fire sensor inside the vehicle does not detect a fire, but the fire sensor in the engine compartment detects a fire, the escape ladder opening drive module will control the escape ladder to open. If neither the fire sensor inside the vehicle nor the fire sensor in the engine compartment detects a fire, the escape ladder will not open.

[0015] If the collision sensor does not detect a collision, but the floor water level sensor detects water level information while the roof water level sensor does not, the escape ladder opening drive module will control the escape ladder to open.

[0016] This allows for the decision and control of opening the escape ladder in the event of a dangerous accident, based on the specific circumstances of whether escaping through the top window is safe, thus ensuring the safe escape of passengers.

[0017] Furthermore, the bus roof escape system also includes a protective cover for installation on the roof to conceal the escape ladder, and a protective cover opening drive module linked to the protective cover. The protective cover opening drive module is controlled by the control decision module to open before the escape ladder needs to be opened. By setting up the protective cover, the escape ladder can be enclosed inside, avoiding accidental operation and ensuring the overall aesthetics of the vehicle interior.

[0018] Preferably, the control decision module controls the protective cover to open 1 second before the escape ladder opens. This ensures that the opening actions of the protective cover and the escape ladder are more compact without interference, improving the opening response speed and giving passengers more time to escape.

[0019] Preferably, the escape ladder is a telescopic ladder comprising multiple sections with adjacent sections interlocking. The uppermost section of the escape ladder is hinged to the roof around a horizontal axis. The escape ladder's activation drive module drives the escape ladder to rotate downwards from a horizontal position, causing the retracted sections to slide down and unfold under gravity for passengers to climb. This method achieves the release and unfolding of the escape ladder, has a simple driving mechanism, lower requirements for the drive mechanism, and allows each section to extend and retract freely, making it convenient and flexible for passengers to adjust.

[0020] The bus of the present invention includes a vehicle body, the vehicle body being equipped with a bus roof escape system, the bus roof escape system including an escape ladder for installation next to the roof window, the escape ladder being a folding ladder or a telescopic ladder, and an opening control system for driving the escape ladder to release and unfold, the opening control system including an opening timing decision module and an escape ladder opening drive module, the opening timing decision module including a control decision module and a vehicle condition detection module, the vehicle condition detection module being used to detect vehicle accident information and feed the detection results back to the control decision module, the control decision module being controlled and connected to the escape ladder opening drive module, and determining whether to open the escape ladder based on the detection results, the escape ladder opening drive module being used to release and unfold the escape ladder for passengers to climb.

[0021] The bus of the present invention is equipped with an intelligent bus roof escape system. The bus roof escape system can accurately determine the timing of releasing and deploying the escape ladder through the activation timing decision module. When the bus has an accident and the set conditions for opening the escape ladder are met, the escape ladder can be automatically released through the escape ladder opening module without human operation. The system responds in a timely manner, buys passengers escape time, improves escape efficiency, and ensures passenger safety.

[0022] Furthermore, the vehicle condition detection module includes at least one of the following: an attitude sensing component for detecting the vehicle's posture, a fire sensing component for detecting whether a fire has occurred, and a water level sensing component for detecting wading conditions. By detecting these aspects of the vehicle condition, it is possible to accurately determine whether the bus has experienced an accident requiring escape through the roof window, providing reliable vehicle condition information and data support for the control decision module to make accurate decisions.

[0023] Furthermore, the vehicle condition detection module includes attitude sensing components, fire sensing components, and water level sensing components. By comprehensively judging the bus's attitude, the current fire situation, and the current water situation, multi-dimensional integrated decision-making can be performed, improving the accuracy of the decisions made by the control decision module.

[0024] Furthermore, the attitude sensing component includes a collision sensor and an angle sensor; the fire sensing component includes an in-vehicle fire sensor and an engine compartment fire sensor; and the water level sensing component includes a floor water level sensor and a roof water level sensor. Through sensors in different locations and with different functions, the accident status of the bus can be detected in a diverse and multi-dimensional manner, providing data support for the control decision module to make accurate decisions.

[0025] Furthermore, the control decision module controls the activation action of the escape ladder activation drive module under the following conditions:

[0026] When the vehicle is involved in a collision but does not overturn; or, when the vehicle is not involved in a collision, there is no fire inside the passenger compartment but a fire in the engine compartment; or, when the vehicle is not involved in a collision, the bottom of the vehicle reaches a certain water level, but the top of the vehicle is not flooded. In these situations, releasing the escape ladder will allow passengers to escape relatively safely through the top window.

[0027] More specifically, the control decision module controls the escape ladder opening drive module in the following ways:

[0028] When the collision sensor detects a collision, if the angle sensor does not detect a rollover, the escape ladder opening drive module controls the escape ladder to open; if the angle sensor detects a rollover, the escape ladder will not open.

[0029] If the collision sensor does not detect a collision, but the fire sensor inside the vehicle detects a fire, the escape ladder will not open. If the fire sensor inside the vehicle does not detect a fire, but the fire sensor in the engine compartment detects a fire, the escape ladder opening drive module will control the escape ladder to open. If neither the fire sensor inside the vehicle nor the fire sensor in the engine compartment detects a fire, the escape ladder will not open.

[0030] If the collision sensor does not detect a collision, but the floor water level sensor detects water level information while the roof water level sensor does not, the escape ladder opening drive module will control the escape ladder to open.

[0031] This allows for the decision and control of opening the escape ladder in the event of a dangerous accident, based on the specific circumstances of whether escaping through the top window is safe, thus ensuring the safe escape of passengers.

[0032] Furthermore, the bus roof escape system also includes a protective cover for installation on the roof to conceal the escape ladder, and a protective cover opening drive module linked to the protective cover. The protective cover opening drive module is controlled by the control decision module to open before the escape ladder needs to be opened. By setting up the protective cover, the escape ladder can be enclosed inside, avoiding accidental operation and ensuring the overall aesthetics of the vehicle interior.

[0033] Preferably, the control decision module controls the protective cover to open 1 second before the escape ladder opens. This ensures that the opening actions of the protective cover and the escape ladder are more compact without interference, improving the opening response speed and giving passengers more time to escape.

[0034] Preferably, the escape ladder is a telescopic ladder comprising multiple sections with adjacent sections interlocking. The uppermost section of the escape ladder is hinged to the roof around a horizontal axis. The escape ladder's activation drive module drives the escape ladder to rotate downwards from a horizontal position, causing the retracted sections to slide down and unfold under gravity for passengers to climb. This method achieves the release and unfolding of the escape ladder, has a simple driving mechanism, lower requirements for the drive mechanism, and allows each section to extend and retract freely, making it convenient and flexible for passengers to adjust. Attached Figure Description

[0035] Figure 1 This is a schematic diagram showing the top windshield and the side escape ladder in Embodiment 1 of the passenger vehicle of the present invention;

[0036] Figure 2 This is a diagram showing the escape ladder in operation (not all sections are shown).

[0037] In the diagram: 1. Roof; 10. Roof window; 2. Escape ladder; 20. Ladder section; 21. Hinge end; 3. Protective cover. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the invention and are not intended to limit the invention; that is, the described embodiments are merely some embodiments of the invention, and not all embodiments. The components of the embodiments of the invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0039] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0040] It should be noted that relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0041] The features and performance of the present invention will be further described in detail below with reference to embodiments.

[0042] Embodiment 1 of the passenger vehicle of the present invention:

[0043] The main difference between the bus in this embodiment and existing buses lies in the technical solution for facilitating quick and easy escape through the roof window. In this embodiment, the bus is equipped with a roof escape system. With the help of this roof escape system, passengers can quickly and easily escape through the roof window in the event of certain accidents, thereby improving safety performance and reducing the occurrence of personal injury or death.

[0044] Specifically, such as Figure 1-2 As shown, the bus roof escape system includes an escape ladder 2 installed on one side of the roof vent 10 in the front-rear direction. The escape ladder 2 is a telescopic ladder, consisting of multiple ladder sections 20 with adjacent sections 20 interlocking. The uppermost ladder section 20 of the escape ladder 2 is hinged to the roof 1 around a horizontal axis. When all the ladder sections 20 of the escape ladder 2 are retracted together, they occupy less space. Therefore, under normal conditions, the escape ladder 2 is held horizontally near the bottom of the roof 1 in a retracted posture. When the uppermost ladder section 20 of the escape ladder 2 flips downward from the horizontal position, the retracted ladder sections 20 slide down and unfold under the action of gravity, forming a suspended ladder below the roof vent 10 for passengers to climb.

[0045] More critically, the bus roof escape system also includes an opening control system for driving the release and deployment of the escape ladder 2. The opening control system includes an opening timing decision module and an escape ladder opening drive module. The opening timing decision module includes a control decision module and a vehicle condition detection module. The vehicle condition detection module detects vehicle accident information and feeds the detection results back to the control decision module. The control decision module is connected to the escape ladder opening drive module and determines whether to open the escape ladder 2 based on the detection results. The escape ladder opening drive module drives the top section 20 of the escape ladder 2 to flip downwards from a horizontal position.

[0046] In this embodiment, the vehicle condition detection module includes three different types of detection modules to detect different accident situations, specifically: an attitude sensing component, a fire sensing component, and a water level sensing component. More specifically, the attitude sensing component includes a collision sensor and an angle sensor; the fire sensing component includes an interior fire sensor located inside the passenger compartment and an engine compartment fire sensor located in the engine compartment; and the water level sensing component includes a floor water level sensor located inside the passenger compartment to detect water levels and a roof water level sensor located on the outer side of the roof to detect water levels on the vehicle roof. By using sensors in different locations and with different functions, the bus's attitude, the current fire situation, and the current water situation are comprehensively assessed, enabling diversified and multi-dimensional detection of the bus's accident status. This provides data support for the control decision module to make accurate decisions, improving the accuracy of the decisions made by the control decision module.

[0047] Specifically, in this embodiment, when the collision sensor detects collision information, if the angle sensor does not detect rollover information, the escape ladder opening drive module controls the escape ladder 2 to open; if the angle sensor detects rollover information, then in the two states after a rollover, in one case the roof window 10 is pressed under the vehicle and cannot be opened after a 180° rollover, and in the other case the passengers can escape through the roof window 10 along the side wall after a 90° rollover, without needing to open the escape ladder 2, and opening the escape ladder 2 would also cause obstacles, therefore the escape ladder 2 is prohibited from being opened in this case.

[0048] When the collision sensor does not detect a collision, but the fire sensor inside the vehicle detects a fire, the escape ladder 2 will not be activated in this situation because the temperature of the roof 1 is high and flammable materials such as foam and curtains on the roof may cause the fire to spread upwards, in order to avoid secondary burns or scalds. If the fire sensor inside the vehicle does not detect a fire, but the fire sensor in the engine compartment does, the escape ladder activation drive module will control the escape ladder 2 to open, and passengers can use the escape ladder 2 to quickly escape from the roof window 10. If the fire sensor inside the vehicle does not detect a fire, but the fire sensor in the engine compartment does not detect a fire, then the escape ladder 2 will not be activated.

[0049] When the collision sensor does not detect collision information, but the floor water level sensor detects water level information while the roof water level sensor does not, indicating that the bus is flooded, the escape ladder activation drive module controls the escape ladder 2 to open, allowing passengers to quickly escape through the roof window 10 using the escape ladder 2.

[0050] In this embodiment, the bus roof escape system can accurately determine the timing of releasing and deploying the escape ladder 2 through the activation timing decision module. When an accident occurs in the bus and the set conditions for opening the escape ladder 2 are met, the escape ladder 2 can be automatically released through the escape ladder 2 activation module without human operation. The system responds promptly, buys time for passengers to escape, improves escape efficiency, and ensures passenger safety.

[0051] In addition, as a preferred option, the escape ladder 2 of the bus roof escape system is also equipped with a protective cover 3. The protective cover 3 is installed on the lower side of the roof 1 to cover the escape ladder 2 inside. This can prevent passengers from operating or touching the escape ladder 2 at will, prevent malfunctions when the escape ladder 2 needs to work, and also ensure the overall aesthetics of the interior of the vehicle.

[0052] To achieve a high degree of automation and convenience, the protective cover 3 can also be opened in a controlled manner. Specifically, the opening control system also includes a protective cover opening drive module linked to the protective cover 3. The protective cover opening drive module is connected to the control decision module, which uniformly controls both the protective cover opening drive module and the escape ladder opening drive module. In the event of an accident and when escape is required via the top ventilation window 10, the control decision module first controls the protective cover to open. One second after the protective cover opens, it controls the escape ladder 2 to open. This avoids interference between the opening of the protective cover and the opening of the escape ladder 2, and the opening process of both is relatively compact and efficient, allowing more escape time.

[0053] Both the protective cover opening drive module and the escape ladder opening drive module can be pneumatically driven or electrically driven, and can utilize the bus's own air or power source. Specifically, the escape ladder opening drive module can be a telescopic cylinder, with its piston rod hinged to the side of the uppermost ladder section 20 of the escape ladder 2. When the piston rod extends, it can push the escape ladder 2 to flip downwards. The protective cover 3 can be hinged to the roof 1 around a horizontal axis on one side. The protective cover opening drive module can also be a telescopic cylinder, with its piston rod hinged to the side of the protective cover 3 adjacent to the hinge position. When the piston rod extends, it can push the protective cover 3 to open. Of course, in other embodiments, if an electric drive mechanism is used to drive the protective cover 3 and the escape ladder 2, a servo motor can be used. The output shaft of the servo motor used to drive the protective cover 3 and the escape ladder 2 is respectively connected to the rotating shafts of the protective cover 3 and the escape ladder 2 that are hinged to the roof 1.

[0054] Of course, the bus of the present invention is not limited to the embodiments described above. Several other modified embodiments based on the design concept of the present invention are also provided below.

[0055] Embodiment 2 of the bus of the present invention: Unlike Embodiment 1 described above, the escape ladder is a folding ladder. The top of the folding ladder is hinged to the roof of the bus. Under normal conditions, it is kept in a horizontal position. When it needs to be opened, it is flipped to a vertical position, and passengers can manually flip and unfold it.

[0056] Embodiment 3 of the bus of the present invention: Unlike Embodiment 1 described above, the escape ladder is a rope ladder. The roof is provided with a cavity for accommodating the rope ladders stacked together. The opening of the cavity facing downward is provided with a sealing door. After the sealing door is opened, the rope ladder can fall automatically under the action of gravity. The escape ladder opening drive module is connected to the sealing door and can drive the sealing door to open.

[0057] Embodiment 4 of the present invention: Unlike Embodiment 1 described above, the vehicle condition detection module includes an attitude sensing component and a fire sensing component. It uses the detection of the vehicle's attitude (i.e., whether a collision or rollover has occurred) and the detection of a fire inside the vehicle as the basis for deciding whether to release and open the escape ladder. Alternatively, in other embodiments, the vehicle condition detection module only includes an attitude sensing component; or, in other embodiments, the vehicle condition detection module only includes a fire sensing component; or, in other embodiments, the vehicle condition detection module only includes a water sensing component. In these cases, the control decision module determines whether to open or not the escape ladder based on single-factor data.

[0058] Embodiment 5 of the bus of the present invention: Unlike Embodiment 1 described above, the control decision module controls the protective cover and the escape ladder to open simultaneously, but the opening speed of the protective cover is greater than the opening speed of the escape ladder to avoid interference between the two.

[0059] Embodiment 6 of the present invention: Unlike Embodiment 1 described above, the attitude sensing component can be a vibration sensor, a gyroscope, etc.

[0060] The present invention relates to a bus roof window escape ladder opening control method based on a bus with an escape ladder installed beside the roof window. The escape ladder is normally retracted. When escape via the roof window is needed, the escape ladder is opened via an escape ladder opening drive module, forming a suspended ladder below the roof window for passengers to climb. The bus is equipped with a vehicle condition detection module for detecting vehicle accident information and a control decision module for making decisions and outputting control signals. The control decision module is connected to the escape ladder opening drive module.

[0061] The specific control methods are as follows:

[0062] The vehicle condition detection module monitors vehicle condition information and feeds this information back to the control decision module, which then controls the activation of the escape ladders. When the vehicle is involved in a collision but does not overturn, the escape ladder corresponding to the roof window activates. When the vehicle is not involved in a collision, there is no fire inside the passenger compartment, but a fire occurs in the engine compartment, the escape ladder corresponding to the roof window activates. When the vehicle is not involved in a collision, the bottom of the vehicle reaches a certain water level, but the top of the vehicle is dry, the escape ladder corresponding to the roof window activates. A better approach is to prohibit the activation of the escape ladder corresponding to the roof window when the vehicle is not involved in a collision and has not overturned, but a fire occurs inside the passenger compartment; and to prohibit the activation of the escape ladder corresponding to the roof window when the vehicle is involved in a collision and overturns. This allows for better passenger protection by guiding passengers on whether to use the escape ladders and roof windows to escape based on different accident types and severity.

[0063] An embodiment of the bus roof escape system of the present invention: its specific structure and working method are the same as those of the bus roof escape system in the embodiment of the bus, and will not be described again here.

[0064] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. The scope of patent protection of the present invention shall be determined by the claims. Similarly, any equivalent structural changes made based on the description and drawings of the present invention shall also be included within the scope of protection of the present invention.

Claims

1. A bus roof escape system, comprising an escape ladder (2) installed beside the roof vent (10), the escape ladder being a folding ladder or a telescopic ladder, characterized in that, It also includes an opening control system for driving the deployment of the escape ladder. The opening control system includes an opening timing decision module and an escape ladder opening drive module. The opening timing decision module includes a control decision module and a vehicle condition detection module. The vehicle condition detection module detects vehicle accident information and feeds the detection results back to the control decision module. The control decision module is connected to the escape ladder opening drive module and determines whether to open the escape ladder based on the detection results. The escape ladder opening drive module is used to deploy the escape ladder for passengers to climb. The vehicle condition detection module includes an attitude sensing component and a water level sensing component. The system includes a collision sensor and an angle sensor. The water level sensing component includes a floor water level sensor and a roof water level sensor. The control decision module controls the escape ladder opening drive module in the following ways: when the collision sensor detects collision information, if the angle sensor does not detect rollover information, the escape ladder opening drive module controls the escape ladder to open; if the angle sensor detects rollover information, the escape ladder does not open. When the collision sensor does not detect collision information, if the floor water level sensor detects water level information and the roof water level sensor does not detect water level information, the escape ladder opening drive module controls the escape ladder to open.

2. The bus roof escape system according to claim 1, characterized in that, The vehicle condition detection module also includes a fire sensing component, which includes an in-vehicle fire sensor and an engine compartment fire sensor. The control method also involves: when the collision sensor does not detect collision information, if the in-vehicle fire sensor detects fire information, the escape ladder will not open; if the in-vehicle fire sensor does not detect fire information but the engine compartment fire sensor detects fire information, the escape ladder opening drive module controls the escape ladder to open; if neither the in-vehicle fire sensor nor the engine compartment fire sensor detects fire information, the escape ladder will not open.

3. The bus roof escape system according to any one of claims 1-2, characterized in that, The bus roof escape system also includes a protective cover (3) for installation on the roof (1) to cover the escape ladder (2) and a protective cover opening drive module linked to the protective cover (3), the protective cover opening drive module being controlled by the control decision module to open before the escape ladder (2) needs to be opened.

4. The bus roof escape system according to claim 3, characterized in that, The control decision module controls the protective cover (3) to open 1 second before the escape ladder (2) opens.

5. The bus roof escape system according to any one of claims 1-2, characterized in that, The escape ladder (2) is a telescopic ladder consisting of multiple ladder sections (20) with adjacent ladder sections (20) interlocking. The uppermost ladder section (20) of the escape ladder (2) is hinged to the roof (1) around a horizontal axis. The escape ladder opening drive module is used to drive the escape ladder (2) to flip downward from a horizontal position, so that the ladder sections (20) that are folded together slide down and unfold under the action of gravity for passengers to climb.

6. A bus roof escape system, comprising an escape ladder (2) for installation beside the roof vent (10), the escape ladder being a folding ladder or a telescopic ladder, characterized in that, It also includes an opening control system for driving the deployment of the escape ladder. The opening control system includes an opening timing decision module and an escape ladder opening drive module. The opening timing decision module includes a control decision module and a vehicle condition detection module. The vehicle condition detection module detects vehicle accident information and feeds the detection results back to the control decision module. The control decision module is connected to the escape ladder opening drive module and determines whether to open the escape ladder based on the detection results. The escape ladder opening drive module is used to deploy the escape ladder for passengers to climb. The vehicle condition detection module includes an attitude sensing component and a fire sensing component. The attitude sensing component includes a collision sensor and an angle sensor, and the fire sensing component includes an in-vehicle fire sensor and a fire sensor. The engine compartment fire sensor and control decision module control the escape ladder opening drive module in the following ways: When the collision sensor detects collision information, if the angle sensor does not detect rollover information, the escape ladder opening drive module controls the escape ladder to open; if the angle sensor detects rollover information, the escape ladder does not open. When the collision sensor does not detect collision information, if the vehicle interior fire sensor detects fire information, the escape ladder does not open. If the vehicle interior fire sensor does not detect fire information, but the engine compartment fire sensor detects fire information, the escape ladder opening drive module controls the escape ladder to open; if neither the vehicle interior fire sensor nor the engine compartment fire sensor detects fire information, the escape ladder does not open.

7. The bus roof escape system according to claim 6, characterized in that, The bus roof escape system also includes a protective cover (3) for installation on the roof (1) to cover the escape ladder (2) and a protective cover opening drive module linked to the protective cover (3), the protective cover opening drive module being controlled by the control decision module to open before the escape ladder (2) needs to be opened.

8. The bus roof escape system according to claim 7, characterized in that, The control decision module controls the protective cover (3) to open 1 second before the escape ladder (2) opens.

9. The bus roof escape system according to claim 6, characterized in that, The escape ladder (2) is a telescopic ladder consisting of multiple ladder sections (20) with adjacent ladder sections (20) interlocking. The uppermost ladder section (20) of the escape ladder (2) is hinged to the roof (1) around a horizontal axis. The escape ladder opening drive module is used to drive the escape ladder (2) to flip downward from a horizontal position, so that the ladder sections (20) that are folded together slide down and unfold under the action of gravity for passengers to climb.

10. A passenger vehicle, comprising a vehicle body, characterized in that, The vehicle body is equipped with a bus roof escape system, which includes an escape ladder (2) installed next to the roof vent (10). The escape ladder is a folding ladder or a telescopic ladder. The system also includes an opening control system for driving the escape ladder to unfold. The opening control system includes an opening timing decision module and an escape ladder opening drive module. The opening timing decision module includes a control decision module and a vehicle condition detection module. The vehicle condition detection module detects vehicle accident information and feeds the detection results back to the control decision module. The control decision module is connected to the escape ladder opening drive module and determines whether to open the escape ladder based on the detection results. The escape ladder opening drive module is used to unfold the escape ladder for passengers to climb. The vehicle condition detection module includes an attitude sensing component and a water level sensing component. The attitude sensing component includes a collision sensor and an angle sensor, and the water level sensing component includes a floor water level sensor and a roof water level sensor. The control decision module controls the escape ladder opening drive module in the following ways: when the collision sensor detects collision information, if the angle sensor does not detect rollover information, the escape ladder opening drive module controls the escape ladder to open; if the angle sensor detects rollover information, the escape ladder does not open. When the collision sensor does not detect collision information, if the floor water level sensor detects water level information and the roof water level sensor does not detect water level information, the escape ladder opening drive module controls the escape ladder to open.

11. The passenger vehicle according to claim 10, characterized in that, The vehicle condition detection module also includes a fire sensing component, which includes an in-vehicle fire sensor and an engine compartment fire sensor. The control method also involves: when the collision sensor does not detect collision information, if the in-vehicle fire sensor detects fire information, the escape ladder will not open; if the in-vehicle fire sensor does not detect fire information but the engine compartment fire sensor detects fire information, the escape ladder opening drive module controls the escape ladder to open; if neither the in-vehicle fire sensor nor the engine compartment fire sensor detects fire information, the escape ladder will not open.

12. The passenger vehicle according to any one of claims 10-11, characterized in that, The bus roof escape system also includes a protective cover (3) for installation on the roof (1) to cover the escape ladder (2) and a protective cover opening drive module linked to the protective cover (3), the protective cover opening drive module being controlled by the control decision module to open before the escape ladder (2) needs to be opened.

13. The passenger vehicle according to claim 12, characterized in that, The control decision module controls the protective cover (3) to open 1 second before the escape ladder (2) opens.

14. The passenger vehicle according to any one of claims 10-11, characterized in that, The escape ladder (2) is a telescopic ladder consisting of multiple ladder sections (20) with adjacent ladder sections (20) interlocking. The uppermost ladder section (20) of the escape ladder (2) is hinged to the roof (1) around a horizontal axis. The escape ladder opening drive module is used to drive the escape ladder (2) to flip downward from a horizontal position, so that the ladder sections (20) that are folded together slide down and unfold under the action of gravity for passengers to climb.

15. A passenger vehicle, comprising a body, characterized in that, The vehicle body is equipped with a bus roof escape system, which includes an escape ladder (2) installed next to the roof vent (10). The escape ladder is a folding ladder or a telescopic ladder. It is characterized by further including an opening control system for driving the escape ladder to unfold. The opening control system includes an opening timing decision module and an escape ladder opening drive module. The opening timing decision module includes a control decision module and a vehicle condition detection module. The vehicle condition detection module is used to detect vehicle accident information and feed the detection results back to the control decision module. The control decision module is connected to the escape ladder opening drive module and determines whether to open the escape ladder based on the detection results. The escape ladder opening drive module is used to unfold the escape ladder for passengers to climb. The vehicle condition detection module includes an attitude sensing component and a fire sensing component. The attitude sensing component includes... The system includes collision sensors and angle sensors. The fire sensing components include an in-vehicle fire sensor and an engine compartment fire sensor. The control decision module controls the escape ladder opening drive module in the following ways: when the collision sensor detects collision information, if the angle sensor does not detect rollover information, the escape ladder opening drive module controls the escape ladder to open; if the angle sensor detects rollover information, the escape ladder does not open. When the collision sensor does not detect collision information, if the in-vehicle fire sensor detects fire information, the escape ladder does not open. If the in-vehicle fire sensor does not detect fire information but the engine compartment fire sensor detects fire information, the escape ladder opening drive module controls the escape ladder to open; if neither the in-vehicle fire sensor nor the engine compartment fire sensor detects fire information, the escape ladder does not open.

16. The passenger vehicle according to claim 15, characterized in that, The bus roof escape system also includes a protective cover (3) for installation on the roof (1) to cover the escape ladder (2) and a protective cover opening drive module linked to the protective cover (3), the protective cover opening drive module being controlled by the control decision module to open before the escape ladder (2) needs to be opened.

17. The passenger vehicle according to claim 16, characterized in that, The control decision module controls the protective cover (3) to open 1 second before the escape ladder (2) opens.

18. The passenger vehicle according to claim 15, characterized in that, The escape ladder (2) is a telescopic ladder consisting of multiple ladder sections (20) with adjacent ladder sections (20) interlocking. The uppermost ladder section (20) of the escape ladder (2) is hinged to the roof (1) around a horizontal axis. The escape ladder opening drive module is used to drive the escape ladder (2) to flip downward from a horizontal position, so that the ladder sections (20) that are folded together slide down and unfold under the action of gravity for passengers to climb.

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