A commercial vehicle cab passenger rest device and control method

Abstract

The application discloses a kind of commercial vehicle cab passenger rest device and control method, belong to commercial vehicle cab design and intelligent control field.Device includes: steer-by-wire system, set in the front side of cab, for driving steering wheel to be stored to first preset position;Seat system, set in the front side of cab, can be stored to second preset position;Electric bunk assembly, set in the rear of cab, can be switched between double-layer state and plane split state;Vehicle-mounted intelligent control terminal is used to receive voice instruction, and control the steer-by-wire system, seat system and electric bunk assembly action;Wherein, the steer-by-wire system is stored to first preset position, the seat system is stored to second preset position, the electric bunk assembly is in plane split state, and three jointly constitute the extension rest space in cab.The application forms flat rest space in commercial vehicle cab under the premise of guaranteeing safety by component collaborative storage and split.

Description

Technical Field

[0001] This invention belongs to the field of commercial vehicle cab design and intelligent control, specifically relating to a passenger rest device and control method for a commercial vehicle cab. Background Technology

[0002] Traditional commercial vehicle cab layouts are primarily function-oriented, only ensuring normal driving operations and basic temporary rest. The steering wheel and driver / passenger seats are independently fixed based on driving conditions and cannot be adjusted together. While the rear sleeper berth provides lying space, its position and shape remain unchanged. When the driver stops to rest, the steering wheel and seat back face the space in front of the sleeper berth, preventing the driver from stretching out and making it easy to bump their head when getting up. The entire cab space is cramped and oppressive, far from meeting the basic needs for spacious and comfortable living conditions during long-term vehicle use.

[0003] In terms of intelligence, traditional cab facilities are mostly manually operated mechanical systems. For example, seat positions, berth folding, and air conditioning temperatures all require manual adjustment, a tedious and laborious process. Especially after long-distance driving when extremely fatigued, drivers expend considerable energy just preparing the environment before resting, offering no comfort whatsoever. Furthermore, these discrete mechanical components operate independently without any safety interlocking mechanisms, making it impossible to detect personnel positions or system malfunctions. Manual operation in confined spaces poses risks of pinching and collisions, resulting in a generally low level of intelligence. With technological advancements, commercial vehicle cabs have begun to evolve towards intelligent cockpits. However, existing solutions often simply transplant fragmented comfort features from passenger vehicles, such as simple seat ventilation and voice activation, into commercial vehicles without addressing the systemic challenges of cab space reconstruction.

[0004] Therefore, there is an urgent need for a rest device and control method for commercial vehicle cab occupants. This device would reconstruct the cab from a "driving mode" to a "living mode" by utilizing the long-travel storage of the steering wheel, the extreme folding of the driver and passenger seats, and the separate linkage of the sleeper berth. Simultaneously, through voice interaction and memory functions, multiple components can be linked in an orderly manner with a single button press, fundamentally improving the intelligence level, ease of operation, and living comfort of the commercial vehicle cab. Summary of the Invention

[0005] The technical problem to be solved by this invention is: how to improve the spatial comfort of the cab of a commercial vehicle while ensuring safety, so that passengers can have a flat resting space.

[0006] To solve the above-mentioned technical problems, the present invention provides a resting device for occupants in the cab of a commercial vehicle, characterized in that it includes: The steer-by-wire system is located at the front of the cab and is used to drive the steering wheel to a first preset position. The seating system is located at the front of the cab and can be stowed to a second preset position; The electric sleeper assembly is located at the rear of the cab and can switch between a double-layer state and a flat-bed configuration. The vehicle-mounted intelligent control terminal is used to receive voice commands and control the operation of the steer-by-wire system, seat system, and electric sleeper assembly. When the steer-by-wire system is retracted to the first preset position, the seat system is retracted to the second preset position, and the electric sleeper assembly is in a planar assembly state, the three together constitute an extended rest space inside the driver's cab.

[0007] The aforementioned commercial vehicle cab occupant rest device includes a steer-by-wire system comprising a steering actuator motor and a guide rail; the steering actuator motor receives instructions from the on-board intelligent control terminal and drives the steering wheel to retract along the guide rail to a first preset position; the seat system includes a driver's electric seat, a passenger electric seat, and a seat actuator motor, the seat actuator motor driving the driver's electric seat and passenger electric seat to move forward, tilt their backrests forward, and lock them to a second preset position.

[0008] The aforementioned commercial vehicle cab passenger rest device includes an electric sleeper assembly comprising an upper sleeper pad, a lower sleeper pad, a sleeper flipping motor, and a lifting mechanism. In a double-layer state, the upper sleeper pad is stacked on top of the lower sleeper pad. In a flat assembly state, the upper sleeper pad flips and assembles with the lower sleeper pad to form a flat sleeper. The lifting mechanism is used to adjust the height of the flat sleeper.

[0009] The aforementioned commercial vehicle cab occupant rest device includes an upper berth mat comprising a left upper berth mat, a middle upper berth mat, and a right upper berth mat, each segment being connected to the corresponding side of the lower berth mat via locking hinges; each locking hinge has a berth tilting motor on both sides, and the two berth tilting motors jointly drive the corresponding berth mat to tilt independently, and when tilted to be level with the lower berth mat, the locking hinge automatically engages mechanical locking.

[0010] The aforementioned commercial vehicle cab occupant rest device is characterized in that the on-board intelligent control terminal controls the upper berth to flip in stages. First, the left and right upper berths are flipped, and after the occupant is confirmed to be in a safe area by infrared detection, the middle upper berth is flipped.

[0011] The aforementioned resting device for passengers in the cab of a commercial vehicle is further equipped with a berth status sensing module and a berth temperature control execution component inside the upper and lower berths; the berth status sensing module is used to detect the pressure and temperature signals of the berths, and the berth temperature control execution component automatically heats or ventilates according to the temperature signals.

[0012] The aforementioned commercial vehicle cab occupant rest device also includes a cab lifting sensing module, used to detect the cab lifting status and transmit it to the vehicle-mounted intelligent control terminal; the vehicle-mounted intelligent control terminal also obtains vehicle driving status signals through the vehicle bus, and prohibits the execution of the actions of the steer-by-wire system, seat system and electric sleeper assembly when the vehicle is in motion or the cab is in a lifted state.

[0013] The aforementioned commercial vehicle cab occupant rest device includes an on-board intelligent control terminal that uses infrared detection to sense the position of occupants and items. When it is determined that an object is within the movement range of the steer-by-wire system, seat system, or electric sleeper assembly, the corresponding component is prohibited from being activated. The on-board intelligent control terminal also monitors the drive current of the steer-by-wire system, seat system, or electric sleeper assembly in real time. When the current exceeds a preset range, the current movement is immediately stopped. It also includes a human-machine interaction safety interruption device, which is used to receive emergency stop operations from the occupants and, when triggered, stops the operation of the steer-by-wire system, seat system, and electric sleeper assembly.

[0014] The present invention also provides a control method for a commercial vehicle cab occupant rest device, applied to any of the preceding claims, comprising: The vehicle-mounted intelligent control terminal receives voice commands and determines whether the vehicle meets the preset execution conditions. If not, execution is prohibited. The in-vehicle intelligent control terminal controls the steer-by-wire system to retract the steering wheel to the first preset position and controls the seat system to retract to the second preset position. The vehicle-mounted intelligent control terminal controls the electric sleeper assembly to switch from a double-layer state to a flat, assembled state. When the steering wheel is folded into the first preset position, the seat is folded into the second preset position, and the electric sleeper assembly is in a flat, assembled state, the three together form an extended rest space inside the driver's cab.

[0015] The aforementioned control method for the passenger rest device in the commercial vehicle cab involves the following steps: during the switching of steering wheel storage, seat storage, and electric sleeper assembly states, the on-board intelligent control terminal uses infrared detection to perceive the positions of passengers and items in real time. When it is determined that there are personnel or items within the movement range, the current action is paused. The on-board intelligent control terminal continuously monitors whether there are any abnormal loads in the steering actuator motor, seat actuator motor, sleeper tilting motor, and lifting mechanism. If an abnormality occurs, the movement of the corresponding component is stopped. The on-board intelligent control terminal also receives the trigger signal of the human-machine interaction safety interruption device in real time. When the trigger signal is received, all currently executed actions are stopped.

[0016] The beneficial effects achieved by this invention are as follows: The commercial vehicle cab occupant rest device and control method of this invention, through the coordinated action of the steer-by-wire system, the seat system, and the electric sleeper assembly, form an extended flat rest space within the commercial vehicle cab. The steer-by-wire system retracts the steering wheel to a first preset position, the seat system retracts to a second preset position, and the electric sleeper assembly switches from a double-layer state to a flat, modular state, connecting the driver's area and the sleeper area to form an extended rest plane, thus improving the space utilization conditions when the commercial vehicle is parked for rest.

[0017] This invention enables voice interaction through an in-vehicle intelligent control terminal, converting voice commands into electrical signals and transmitting them to various execution units to complete operations such as seat adjustment, steering wheel storage, berth flipping and raising / lowering. Upon completion of these actions, the dimming sunroof automatically opens. The berth status sensing module works in conjunction with the temperature control execution component to automatically heat or ventilate based on the berth mattress temperature, maintaining comfortable resting conditions. The cab lifting sensing module detects the cab's lifting status, and infrared detection senses the position of personnel and items to intervene in advance. In case of abnormal motor movement, current feedback cancels the movement command. An emergency stop button provides physical emergency intervention. These measures reduce personnel safety risks in various usage scenarios. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the interior space arrangement of the driver's cab according to the present invention; Figure 2 This is a schematic diagram of the seat structure of the present invention; Figure 3 This is a schematic diagram of the steer-by-wire system of the present invention; Figure 4 This is a schematic diagram of the instrument panel of the present invention; Figure 5 This is a schematic diagram of the electric sleeper assembly of the present invention; Figure 6 This is a schematic diagram of the initial state of the electric sleeper assembly of the present invention; Figure 7 This is a schematic diagram of the electric sleeper assembly of the present invention in its unfolded state; Figure 8 Schematic diagram of the cab lifting sensing module; Figure 9 This is a flowchart of the control method of the present invention.

[0019] Reference numerals: 1. Driver's electric seat; 2. Drive-by-wire steering wheel; 3. Dashboard; 4. Passenger electric seat; 5. Electric sleeper berth assembly; 6. On-board intelligent control terminal; 7. Seat actuator motor; 8. Pressure and temperature sensors; 9. Seat ventilation and heating assembly; 10. Steering actuator motor; 11. Guide rail; 12. Upper sleeper berth mat; 13. Sleeper berth tilting motor; 14. Locking hinge; 15. Sleeper berth pressure and temperature sensor; 16. Sleeper berth ventilation and heating assembly; 17. Lower sleeper berth mat; 18. Lifting mechanism; 19. Sleeper berth body; 20. Emergency stop button; 21. Cab lifting sensing module. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, 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 some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0021] Example 1

[0022] This embodiment provides a rest device for occupants in the cab of a commercial vehicle, as shown in the attached figure. Figure 1 and 2 As shown.

[0023] The driver's electric seat 1 and the passenger electric seat 4 are respectively located on both sides of the front row of the cab, providing seating space for the driver and passengers.

[0024] Both the driver's electric seat 1 and the passenger's electric seat 4 are equipped with a seat actuator motor 7 and an occupant status sensing module 8.

[0025] The seat actuator 7 receives voice commands from the in-vehicle intelligent control terminal 6 to drive the seat to adjust the seat cushion tilt angle, seat fore-and-aft position, and backrest angle. The occupant status sensing module 8 includes pressure and temperature sensors located within the seat cushion to collect pressure distribution and temperature signals of the seat cushion in real time. The driver's electric seat 1 and the passenger's electric seat 4 also integrate ventilation and heating components 9 within their seat cushions. These components receive pressure and temperature signals from the occupant status sensing module 8 and, based on preset conditions, activate the heating or ventilation functions of the seat cushion to provide a comfortable temperature for the occupants.

[0026] A steer-by-wire wheel 2 and an instrument panel 3 are located in front of the driver's electric seat 1. The steer-by-wire wheel 2 uses a steer-by-wire structure to transmit steering commands, eliminating the traditional steering shaft structure between the steering wheel and the steering gear, allowing the steering wheel to have a greater adjustment range to adapt to the space requirements of different scenarios such as driving and resting.

[0027] The steer-by-wire system 2 includes a steering wheel, a steering actuator motor 10, and a guide rail 11, as shown in the attached diagram. Figure 3 As shown. The steering actuator motor 10 is located on the lower side of the steering wheel, and guide rails 11 are provided on both sides of the steering wheel. When the steer-by-wire system 2 receives a command from the vehicle intelligent control terminal 6, the steering actuator motor 10 drives the steering wheel to move on the guide rails 11, realizing a wide range of adjustment of the steering wheel in the height and angle directions.

[0028] The instrument panel 3 serves as the central control unit, integrating the vehicle-mounted intelligent control terminal 6. A safety interruption device 20 is installed on the surface of the instrument panel 3, as shown in the attached diagram. Figure 4 As shown. The vehicle-mounted intelligent control terminal 6 is responsible for receiving and parsing the occupant's commands, such as voice commands, forming a voice interaction, and converting the voice commands into electrical signals, which are then transmitted to the seat actuator motor 7 and the steering actuator motor 10, respectively. The vehicle-mounted intelligent control terminal 6 accurately senses the position and movement trajectory of the occupant or object through infrared detection, and determines whether to continue executing or immediately terminate the movement commands of the dynamic components. The human-machine interaction safety interruption device 20 is used to immediately cut off the movement of all dynamic components by physical pressing in an emergency, serving as the highest priority control input for the system safety logic.

[0029] An electric sleeper assembly 5 is located at the rear of the cab, including an upper sleeper mattress 12, a sleeper tilting motor 13, a locking hinge 14, a sleeper pressure and temperature sensor 15, a sleeper ventilation and heating assembly 16, a lower sleeper mattress 17, a lifting mechanism 18, and a sleeper box 19, as shown in the attached diagram. Figure 5 As shown.

[0030] The upper berth 12 consists of three sections: a left upper berth 12, a middle upper berth 12, and a right upper berth 12. The lower berth 17 is mounted above the berth housing 19 via a lifting mechanism 18, which is concealed inside the berth housing 19. The fixed side of each of the plurality of locking hinges 14 is installed on the side of the lower berth 17, and the movable side of the locking hinges 14 is fixedly connected to the sides of the left, middle, and right upper berth berths of the upper berth 12, respectively.

[0031] Each locking hinge 14 has a corresponding berth tilting motor 13 on both sides. The output end of each berth tilting motor 13 is connected to the locking hinge 14 to enable the upper berth pad 12 to tilt around the side of the lower berth pad 17. When the three sections of the upper berth pad 12 are tilted to the unfolded position flush with the lower berth pad 17, each locking hinge 4 is mechanically locked, and the upper berth pad 12 and the lower berth pad 17 are combined to form a continuous flat berth.

[0032] The electric sleeper assembly 5 includes two usage modes: an initial state and an unfolded state, as shown in the attached diagram. Figure 6 and7 As shown.

[0033] In the initial state, the lower berth 17 is located on the upper part of the berth housing 19, and the lifting mechanism 18 is in the storage position. The left, middle and right sides of the upper berth 12 are flipped upward and folded above the lower berth 17 via locking hinges 14, forming a double-layer berth for passengers to rest.

[0034] When unfolded, the vehicle-mounted intelligent control terminal 6 transmits commands to the seat actuator motor 7, steering actuator motor 10, and sleeper berth tilting motor 13 through voice interaction with the occupants.

[0035] The vehicle-mounted intelligent control terminal 6 sends a command to the steering actuator motor 10, driving the steer-by-wire system 2 to move along the guide rail 11 to the foremost position. It also sends commands to the seat actuator motors 7 of the driver's electric seat 1 and the passenger's electric seat 4, driving the seats to move forward to their foremost extreme positions, while simultaneously flipping the seat backs forward to a preset minimum angle and locking them in place.

[0036] After the steer-by-wire system 2, the driver's electric seat 1, and the passenger's electric seat 4 have deployed to avoid obstacles, the vehicle-mounted intelligent control terminal 6 sends a flipping command to the sleeper berth flipping motor 13. The left and right upper berths of the upper berth 12 flip downwards around the left and right sides of the lower berth 17 until they are flush with the lower berth 17, and the locking hinge 14 locks them in place. After the flipping operation is completed, the vehicle-mounted intelligent control terminal 6 senses the current position of the occupant through infrared detection. If the occupant is within the preset safe area, the flipping operation of the middle upper berth of the upper berth 12 continues. The middle upper berth flips downwards around the rear side of the lower berth 17 until it is flush with the lower berth 17 and locks. The upper berth 12 and the lower berth 17 are then combined to form a continuous flat sleeper berth.

[0037] After the sleeper berths are assembled, the on-board intelligent control terminal 6 controls the lifting mechanism 18 to drive the assembled sleeper berth plane to rise or fall to a suitable height according to the preset living space requirements or passenger instructions, forming a living space in the middle of the driver's cab.

[0038] When passengers need to rest, the vehicle-mounted intelligent control terminal 6 controls the dimming sunroof system through voice interaction, so that the sunroof of the windshield, door windows and rear window automatically switches to the shielding state to block out external light and protect the privacy of passengers.

[0039] To ensure the safety of the aforementioned dynamic operating components in complex usage scenarios, the rest device of the present invention also includes a safety control module, including infrared obstacle avoidance protection, resistance overload protection, emergency stop protection, driving status interlock, and maintenance status interlock.

[0040] The infrared obstacle avoidance protection means that the vehicle-mounted intelligent control terminal 6 uses infrared detection to perceive the spatial position of occupants and items in the driver's cab in real time. When it is determined that any person or item is within the motion envelope of a component that is about to move, the component cannot initiate the movement operation.

[0041] The resistance overload protection means that during any of the above dynamic operations, if the moving parts encounter resistance exceeding a preset threshold, causing the drive current of the actuator 10 or seat actuator 7 to increase instantaneously and exceed the preset normal range, the vehicle intelligent control terminal 6 will identify the abnormal current signal in real time and immediately issue a stop command to the corresponding actuator 10 or seat actuator 7 to prevent injury to the occupants or damage to the parts.

[0042] The emergency stop protection means that when the occupant discovers any abnormal movement of any component or any unsafe action, they can press the human-machine interface safety interruption device 20 on the instrument panel 3 to immediately cut off the power or control signals of all moving components with the highest priority, stopping all ongoing component operations.

[0043] The driving status interlock indicates that the on-board intelligent control terminal 6 is communicatively connected to the vehicle operation status perception system. When the system detects that the vehicle is in motion, all the aforementioned spatial reconstruction and dynamic adjustment functions are automatically disabled to ensure driving safety.

[0044] The maintenance status interlock is achieved by adding a cab lifting sensing module 21 at the cab lifting cylinder. The cab lifting sensing module 21 is a lifting sensor installed at the cab lifting cylinder, as shown in the attached diagram. Figure 8 As shown, this is used to detect the lifting status of the cab in real time and transmit the information to the on-board intelligent control terminal 6. When the cab is detected to be in a lifted state, the on-board intelligent control terminal 6 prohibits the execution of all the above operations.

[0045] Meanwhile, the vehicle-mounted intelligent control terminal 6 also obtains vehicle driving status signals through the vehicle bus. When it is determined that the vehicle is in a driving state, all of the above operations are also prohibited.

[0046] Example 2

[0047] This embodiment provides a control method for a passenger rest device in the cab of a commercial vehicle, applied to the device described in Embodiment 1. In this embodiment, the on-board intelligent control terminal 6 can independently execute any of the following adjustment operations based on different voice commands from the passenger, or it can execute all operations in conjunction with the rest mode. (See attached...) Figure 9 As shown, the control method is as follows: Receive the rest mode voice command issued by the passenger, determine whether the vehicle meets the conditions for executing the rest mode, if not, prohibit the execution of subsequent steps, if the conditions are met, proceed to the next step; The vehicle intelligent control terminal 6 sends commands to the steering motor 10 and the seat motor 7, driving the steering wheel to be retracted along the guide rail 11 to a preset storage position below the dashboard, driving the driver's electric seat 1 and the passenger's electric seat 4 to move forward to a preset front limit position, and tilting the seat backs forward to a preset angle and locking them. In the initial state, the upper berth pad 2 is stacked on top of the lower berth pad 17; the vehicle-mounted intelligent control terminal 6 sends a flipping command to the berth flipping motor 13, driving the upper berth pad 12 to flip and combine with the lower berth pad 17 to form a flat berth, and controls the lifting mechanism 18 to adjust the flat berth to the preset height. The vehicle-mounted intelligent control terminal 6 controls the dimming canopy to switch to the shielded state, and controls the sleeper temperature control execution component 16 to heat or ventilate based on the temperature signal fed back by the sleeper status sensing module 15. During the above steps, the vehicle-mounted intelligent control terminal 6 continuously monitors whether the steering actuator motor 10, seat actuator motor 7, sleeper berth tilting motor 13 and lifting mechanism 18 experience any abnormal load, and receives the trigger signal from the human-machine interaction safety interruption device 20 in real time. If an abnormality occurs, all movements are immediately stopped.

[0048] The vehicle-mounted intelligent control terminal 6 comprehensively determines whether the conditions for executing the rest mode are met based on the cab lifting status information obtained by the cab lifting sensing module 21 and the vehicle driving status signal obtained through the vehicle bus. The rest mode execution conditions not being met include any one or more of the following: the vehicle is in motion, the cab is in a lifted state, the vehicle is in maintenance mode, or the vehicle-mounted intelligent control terminal 6 receives a vehicle fault diagnosis signal. When any of the above situations occur, the vehicle-mounted intelligent control terminal 6 determines that the conditions for executing the rest mode are not currently met.

[0049] Through the aforementioned control methods, occupants can complete the entire spatial reconstruction operation with a single voice command, and can also independently adjust individual components, balancing the convenience of scenario-based linkage with the flexibility of daily use. The cooperation of infrared detection and the human-machine interaction safety interruption device 20 ensures personnel safety throughout the entire operation process.

[0050] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "up," "down," "front," "rear," "left," "right," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only used to explain the relative positional relationship and movement between components in a specific posture. If the specific posture changes, the directional indication will also change accordingly. These terms are used only for the convenience of describing the invention and for simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the invention.

[0051] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0052] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0053] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A resting device for passengers in the cab of a commercial vehicle, characterized in that, include: The steer-by-wire system (2) is located at the front of the cab and is used to drive the steering wheel to a first preset position. The seating system is located at the front of the cab and can be stowed to a second preset position; The electric sleeper assembly (5) is located at the rear of the cab and can be switched between a double-layer state and a flat-joint state. The vehicle-mounted intelligent control terminal (6) is used to receive voice commands and control the operation of the steer-by-wire system (2), the seat system and the electric sleeper assembly (5); When the steer-by-wire system (2) is stored in the first preset position, the seat system is stored in the second preset position, and the electric sleeper assembly (5) is in a planar splicing state, the three together constitute an extended rest space in the driver's cab.

2. The commercial vehicle cab occupant rest device according to claim 1, characterized in that, The steer-by-wire system (2) includes a steering actuator motor (10) and a guide rail (11); the steering actuator motor (10) receives voice commands from the vehicle intelligent control terminal (6) and drives the steering wheel to retract along the guide rail (11) to a first preset position; the seat system includes a driver's electric seat (1), a passenger electric seat (4) and a seat actuator motor (7); the seat actuator motor (7) drives the driver's electric seat (1) and the passenger electric seat (4) to move forward, tilt their backs forward and lock them to a second preset position.

3. The commercial vehicle cab occupant rest device according to claim 1, characterized in that, The electric sleeper assembly (5) includes an upper sleeper mat (12), a lower sleeper mat (17), a sleeper flipping motor (13), and a lifting mechanism (18). In the double-layer state, the upper sleeper mat (12) is stacked on top of the lower sleeper mat (17). In the flat assembly state, the upper sleeper mat (12) flips and assembles with the lower sleeper mat (17) to form a flat sleeper. The lifting mechanism (18) is used to adjust the height of the flat sleeper.

4. The commercial vehicle cab occupant rest device according to claim 3, characterized in that, The upper berth (12) includes a left upper berth, a middle upper berth, and a right upper berth. Each section is connected to the corresponding side of the lower berth (17) via a locking hinge (14). Each locking hinge (14) has a berth flipping motor (13) on both sides. The two berth flipping motors (13) drive the corresponding berth to flip independently. When the berth is flipped to be level with the lower berth (17), the locking hinge (14) automatically performs mechanical locking.

5. The commercial vehicle cab occupant rest device according to claim 4, characterized in that, The vehicle-mounted intelligent control terminal (6) controls the upper berth (12) to flip in stages. First, the left and right upper berths are flipped. After confirming that the occupant is in a safe area through infrared detection, the middle upper berth is flipped.

6. The commercial vehicle cab occupant rest device according to claim 3, characterized in that, The upper berth mat (12) and the lower berth mat (17) are also equipped with a berth status sensing module (15) and a berth temperature control execution component (16); the berth status sensing module (15) is used to detect the pressure and temperature signals of the berth mat, and the berth temperature control execution component (16) automatically heats or ventilates according to the temperature signal; it also includes a dimming canopy, which is used to switch to the shielding state when the vehicle-mounted intelligent control terminal (6) receives the rest command.

7. The commercial vehicle cab occupant rest device according to claim 1, characterized in that, It also includes a cab lifting sensing module (21) for detecting the cab lifting status and transmitting it to the vehicle intelligent control terminal (6); the vehicle intelligent control terminal (6) also obtains the vehicle driving status signal through the vehicle bus, and prohibits the execution of the actions of the steer-by-wire system (2), the seat system and the electric sleeper assembly (5) when the vehicle is in driving state or the cab is in lifting state.

8. The commercial vehicle cab occupant rest device according to claim 1, characterized in that, The vehicle-mounted intelligent control terminal (6) senses the position of passengers and items through infrared detection. When it is determined that an object is within the movement range of the steer-by-wire system (2), the seat system, or the electric sleeper assembly (5), the corresponding component is prohibited from being started. The vehicle-mounted intelligent control terminal (6) also monitors the drive current of the steer-by-wire system (2), the seat system, or the electric sleeper assembly (5) in real time. When the current exceeds the preset range, the current movement is stopped immediately. It also includes a human-machine interaction safety interruption device (20) for receiving emergency stop operations from passengers. When triggered, the steer-by-wire system (2), the seat system, and the electric sleeper assembly (5) are stopped.

9. A control method for a cab occupant rest device in a commercial vehicle, applied to the cab occupant rest device of any one of claims 1 to 8, characterized in that, include: The vehicle-mounted intelligent control terminal (6) receives voice commands and determines whether the vehicle meets the preset execution conditions. If it does not meet the conditions, execution is prohibited. The vehicle-mounted intelligent control terminal (6) controls the steer-by-wire system (2) to retract the steering wheel to the first preset position and controls the seat system to retract to the second preset position; The vehicle-mounted intelligent control terminal (6) controls the electric sleeper assembly (5) to switch from a double-layer state to a flat splicing state; When the steering wheel is folded into the first preset position, the seat is folded into the second preset position, and the electric sleeper assembly (5) is in a flat assembly state, the three together constitute the extended rest space in the driver's cab.

10. The control method for the occupant rest device in the cab of a commercial vehicle according to claim 9, characterized in that, During the switching of the steering wheel storage, seat storage and electric sleeper assembly (5) states, the vehicle intelligent control terminal (6) senses the position of passengers and items in real time through infrared detection. When it is determined that there are people or items within the range of movement, the current action is paused. The vehicle intelligent control terminal (6) continuously monitors whether the steering actuator motor (10), seat actuator motor (7), sleeper tilt motor (13) and lifting mechanism (18) have abnormal loads. When an abnormality occurs, the movement of the corresponding component is stopped. The vehicle intelligent control terminal (6) also receives the trigger signal of the human-machine interaction safety interruption device (20) in real time. When the trigger signal is received, all currently executed actions are stopped.

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