High-speed train seat automatic rotation control system and control method thereof

Abstract

The invention relates to a high-speed train seat automatic rotation control system and a control method thereof, and relates to the technical field of high-speed train seat control, the system comprises a central control system, a seat state detection module, a rotation execution mechanism and a man-machine interaction control module; and the seat state detection module, the rotary execution mechanism and the man-machine interaction control module are respectively in control connection with the central control system. According to the high-speed train seat automatic rotation control system and the control method thereof, through seat pressure sensing automatic detection, servo motor and intelligent control algorithm technologies, millisecond-level detection and 180-degree precise rotation control of the seat state are achieved, the system adopts a main redundancy controller and a standby redundancy controller to improve the reliability of the system, and the reliability of the system is improved. And the seat state is displayed in real time through a human-computer interface, so that a driver can operate conveniently

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of high-speed train seat control, in particular to a high-speed train seat automatic rotation control system and a control method thereof. BACKGROUND

[0002] When the high-speed train arrives at the terminal station, the running direction needs to be changed, so the orientation of the seat needs to be adjusted to ensure that the passenger's line of sight and the running direction are consistent and improve the riding comfort.

[0003] Currently, the seat rotation of the high-speed train mainly relies on the train attendant to rotate the seat by stepping on the foot pedal one by one, which takes up to 30 minutes, resulting in the extension of the train station stop time and the limitation of the train frequency. Therefore, it is of great significance to develop a high-speed train seat automatic rotation control system to realize an automatic, efficient and safe seat rotation system for saving the waiting time for changing the end and improving the operation efficiency of the high-speed train. SUMMARY

[0004] The present application solves the technical problems in the prior art and provides a high-speed train seat automatic rotation control system and a control method thereof.

[0005] In order to solve the above technical problems, the technical scheme of the present application is as follows:

[0006] A high-speed train seat automatic rotation control system, comprising: a central control system, a seat state detection module, a rotation execution mechanism and a man-machine interaction control module; the seat state detection module, the rotation execution mechanism and the man-machine interaction control module are respectively connected with the central control system for control;

[0007] Among them:

[0008] The central control system comprises: a main controller and a backup controller; the main controller and the backup controller respectively communicate with each vehicle compartment through a CAN bus; the main controller and the backup controller have the same function and are respectively used to control the work of the seat state detection module, the rotation execution mechanism and the man-machine interaction control module;

[0009] The seat state detection module comprises: a high-precision piezoresistive sensor arranged in the seat base, which is used to detect the seat occupancy state in real time; the data of the seat occupancy state will be uploaded to the man-machine interaction control module in real time through the CAN bus;

[0010] The rotating actuator comprises, in sequence, a servo motor, a gear box, a flexible gear harmonic reducer and an angular contact bearing; the top end of the angular contact bearing is arranged in a V-shaped sliding groove below the seat base, and a Hall sensor is arranged on the angular contact bearing; the rotating actuator is connected with a three-phase alternating current power supply; the servo motor is used to combine the gear box and the flexible gear harmonic reducer to control the position accurately; the gear box is used to optimize the gear transmission ratio and reduce the starting torque; the flexible gear harmonic reducer is used to utilize the controllable elastic deformation wave generated by the flexible gear to cause the relative tooth error between the rigid gear and the flexible gear to transmit power and movement; the angular contact bearing is used to utilize the power transmitted by the flexible gear harmonic reducer to drive the seat base above the V-shaped sliding groove to rotate; the Hall sensor is used to monitor the seat parameters in real time and feed back the rotation angle in real time; and the V-shaped sliding groove is used to cooperate with the angular contact bearing to improve the rotation stability, so as to realize the 180° rotation of the seat.

[0011] The man-machine interactive control module comprises a high-definition capacitive touch HMI display screen for displaying real-time seat state and rotation progress.

[0012] In the above technical solution, the main controller and the backup controller support seat rotation history data storage and fault recording respectively.

[0013] In the above technical solution, the central control system is used to work through the main controller or the backup controller to realize the function of the central control system; when the main controller fails, the central control system automatically switches to work through the backup controller; when the backup controller fails, the central control system automatically switches to work through the main controller.

[0014] In the above technical solution, the range of the high-precision piezoresistive sensor is 0-300kg, and the accuracy is ±0.5%.

[0015] In the above technical solution, in the man-machine interactive control module, the seat state is displayed in red, green and white, representing occupied, completed and idle states respectively.

[0016] In the above technical solution, the accuracy of the Hall sensor is ±0.1°.

[0017] In the above technical solution, the rotation angular velocity of the angular contact bearing is 5° / s.

[0018] In the above technical solution, the gear transmission ratio of the gear box is 1:25.

[0019] A control method of the high-speed train seat automatic rotation control system described above, comprising the following steps:

[0020] Step 1, end change mode activation: control the vehicle to enter the end change mode;

[0021] Step 2, seat occupancy state detection: the seat enters the power-on state detection stage;

[0022] Step 3, rotation instruction issuing: the man-machine interaction control module selects a seat rotation control mode according to requirements and issues a seat rotation control instruction;

[0023] Step 4, seat transmission execution: the man-machine interaction control module transmits the control instruction to the servo motor through the vehicle serial signal control CAN bus, establishes system communication link data transmission and communication connection; the three-phase alternating current power supply of each car cabin supplies power to the servo motor; the servo motor output shaft drives the flexible gear harmonic reducer through the gear box, and is transmitted to the rotation main shaft of the seat to drive the angular contact bearing to rotate; the Hall sensor monitors the parameters of the seat in real time, and the data is transmitted to the central control system through the CAN bus to dynamically correct the deviation;

[0024] Step 5, state feedback and abnormality processing: after the seat is rotated to the position, the servo motor sends a completion signal to the central control system; when the seat faces the same direction as the vehicle, the man-machine interaction control module updates the seat state to green; if the seat encounters an obstacle or does not reach the target angle, it displays white, and the system automatically triggers a 3-time retry instruction for correction; if the 3-time retry still fails, the system prompts manual inspection of the seat rotation execution mechanism.

[0025] In the above technical solution, step 2 is: using a high-precision piezoresistive sensor to detect whether the seat is occupied, transmitting the seat occupancy state in real time through the vehicle serial control CAN bus, and transmitting the seat state to the man-machine interaction control module in real time through the CAN bus communication protocol to display the real-time state of the seat.

[0026] In step 3 of the above technical solution, the man-machine interaction control module selects a seat rotation control mode according to requirements, including: full-column control mode, single-car cabin mode, and single-row mode; wherein in the full-column control mode, all car seat are rotated synchronously; in the single-car cabin mode, the selected single-car target car seat is rotated; and in the single-row mode, the selected single-row seat is adjusted.

[0027] The present application has the following beneficial effects:

[0028] The high-speed train seat automatic rotation control system and the control method thereof realize millisecond-level detection and 180° accurate rotation control (error ≤±0.3°) of the seat state through seat pressure sensor automatic detection, servo motor and intelligent control algorithm technology, the system uses main and backup dual redundant controllers to improve system reliability, and displays the seat state in real time through the man-machine interface, which is convenient for the driver to operate.

[0029] The high-speed train seat automatic rotation control system of the application has flexible multi-mode control mode, supports single row / single carriage / whole train hierarchical control mode, adapts to different operation scenes, has the characteristics of simple structure, convenient operation, high reliability, reduces manual operation, shortens the terminal station stay time, and optimizes the vehicle departure frequency.

[0030] The high-speed train seat automatic rotation control system of the application can automatically detect and control the rotation of the seat, display the seat state in real time through the man-machine interface display, realize fast, accurate and safe seat rotation by using the pressure sensor and the rotating motor, does not need manual intervention, improves the work efficiency, shortens the terminal station stay time, optimizes the vehicle departure frequency, and significantly improves the high-speed train operation efficiency and passenger comfort. BRIEF DESCRIPTION OF DRAWINGS

[0031] The application will be further described in detail below in combination with the drawings and specific embodiments.

[0032] Figure 1 It is a schematic diagram of the overall framework of the high-speed train seat automatic rotation control system of the application.

[0033] Figure 2 It is a schematic diagram of the seat structure of the high-speed train seat automatic rotation control system of the application.

[0034] Figure 3 It is a schematic diagram of the seat rotation actuator structure of the high-speed train seat automatic rotation control system of the application.

[0035] The reference signs in the drawings are as follows:

[0036] 101 - central control system;

[0037] 102 - seat state detection module;

[0038] 103 - rotation actuator;

[0039] 104 - man-machine interaction control module;

[0040] 301 - high-precision piezoresistive sensor;

[0041] 302 - three-phase alternating current power supply;

[0042] 401 - servo motor;

[0043] 402 - gear box;

[0044] 403 - flexible gear harmonic reducer;

[0045] 404 - Hall sensor;

[0046] 405 - angular contact bearing;

[0047] 406-V-type groove;

[0048] 407 - Seat base. Detailed Implementation

[0049] The present invention will now be described in detail with reference to the accompanying drawings.

[0050] The automatic rotation control system for high-speed train seats of the present invention, such as Figure 1 As shown, it includes: a central control system 101, a seat status detection module 102, a rotary actuator 103, and a human-machine interaction control module 104; the seat status detection module 102, the rotary actuator 103, and the human-machine interaction control module 104 are respectively connected to the central control system 101 for control.

[0051] Specifically:

[0052] like Figure 1 As shown, the central control system 101 includes a main controller and a backup controller; the main controller and the backup controller communicate with each carriage via a CAN bus; the main controller and the backup controller also support the storage of seat rotation history data and fault records. The main controller and the backup controller have the same function, and are used to control the operation of the seat status detection module 102, the rotation actuator 103, and the human-machine interaction control module 104, respectively.

[0053] Under normal circumstances, the main controller in the central control system 101 operates to realize the functions of the central control system 101.

[0054] When the main controller fails, the central control system 101 automatically switches to the backup controller, which takes over the main controller's role. The dual-redundant controller design allows for real-time data synchronization and features fault self-diagnosis and automatic switching capabilities.

[0055] like Figure 2 As shown, the seat status detection module 102 includes a high-precision piezoresistive sensor 301 installed in the seat base 407, which is used to detect the seat occupancy status in real time. The seat occupancy status data is uploaded to the human-machine interaction control module 104 in real time via the CAN bus. The high-precision piezoresistive sensor 301 has a range of 0-300kg and an accuracy of ±0.5%.

[0056] like Figure 2 and Figure 3As shown, the rotary actuator 103 comprises, in sequence, a servo motor 401, a gear box 402, a flexible gear harmonic reducer 403, and an angular contact bearing 405; the top end of the angular contact bearing 405 is arranged in a V-shaped sliding groove 406 below a seat base 407, and a Hall sensor 404 is arranged on the angular contact bearing 405. The rotary actuator 103 is connected to a 380V three-phase AC power supply 302 arranged near the floor.

[0057] The servo motor 401 is used to combine the gear box 402 and the flexible gear harmonic reducer 403 for accurate position control; the gear box 402 is used to optimize the gear transmission ratio and reduce the starting torque; the flexible gear harmonic reducer 403 is used to generate a controllable elastic deformation wave by using a flexible gear to cause the relative tooth error between the rigid gear and the flexible gear to transmit power and motion.

[0058] The angular contact bearing 405 is used to drive the seat base 407 above the V-shaped sliding groove 406 to rotate through chain transmission by using the power transmitted by the flexible gear harmonic reducer 403; the Hall sensor 404 is used to monitor the rotation angle, position, and other parameters of the seat in real time and to feed back the rotation angle in real time, so that the closed-loop control accuracy is below ±0.3°.

[0059] The V-shaped sliding groove 406 is used to cooperate with the angular contact bearing 405 to improve the rotation stability to realize the accurate 180° rotation of the seat.

[0060] In this embodiment, the gear transmission ratio of the gear box 402 is 1:25.

[0061] In this embodiment, the model of the servo motor 401 is SMG-500X, and the torque is 120N·m.

[0062] In this embodiment, the output shaft speed of the servo motor 401 is 2rpm.

[0063] In this embodiment, the accuracy of the Hall sensor 404 is ±0.1°.

[0064] In this embodiment, the rotation angular velocity of the angular contact bearing 405 is 5° / s.

[0065] The high-definition capacitive touch HMI display screen is used in the human-computer interaction control module 104 to display the real-time seat state and rotation progress; the seat state is displayed in red (occupied), green (completed), and white (idle); the real-time seat state and rotation progress are visualized in real time, which is convenient for the driver to operate.

[0066] In the human-computer interaction control module 104, the seat rotation control modes that can be selected according to the needs include: full-row control mode, single-carriage mode, and single-row mode.

[0067] In the full-column control mode, all the car seats are rotated synchronously. In the single-carriage control mode, the selected single-carriage target seat is rotated. In the single-row control mode, the selected single-row seat is adjusted.

[0068] The control method of the high-speed train seat automatic rotation control system comprises the following steps:

[0069] Step 1: End change mode activation: control the vehicle to enter the end change mode;

[0070] Specifically,

[0071] When the train arrives at the terminal station, the driver goes to the other end of the cab, inserts the vehicle key and rotates it to the "ON" position, turns the vehicle switch to the "forward position", and completes the cab end change operation;

[0072] In the high-definition capacitive touch HMI display screen of the human-computer interaction control module 104, the "direction arrow" in the upper right corner of the seat rotation control interface points to the right, and the seat rotation function is activated synchronously;

[0073] Step 2: Seat occupancy state detection: the seat enters the power-on state detection stage;

[0074] Specifically,

[0075] The high-precision piezoresistive sensor 301 under each row of seats is used to start synchronously, detect whether the seat is occupied (pressure value ≥ 15 kg, judged as "occupied" state), and transmit the seat occupancy state in real time through the vehicle serial control CAN bus;

[0076] The seat state is transmitted in real time to the high-definition capacitive touch HMI display screen of the human-computer interaction control module 104 through the CAN bus communication protocol, and the real-time state of the seat is displayed in different colors:

[0077] Idle display white, occupied display red;

[0078] If it is detected that the passenger is stranded, the driver will remind the passenger to stand up for seat rotation through broadcast circular or train attendant notification;

[0079] Step 3: Rotation instruction issuance:

[0080] The human-computer interaction control module 104 selects the seat rotation control mode according to the demand and issues the seat rotation control instruction;

[0081] Specifically,

[0082] After confirming that all the seats are empty, the driver selects the seat rotation control mode through the human-computer interaction control module 104 and issues the seat rotation control instruction;

[0083] Step 4, seat transmission execution:

[0084] The man-machine interaction control module 104 transmits control instructions to the servo motor 401 through the vehicle serial signal control CAN bus, establishes a system communication link data transmission and communication connection;

[0085] The three-phase alternating current power supply 302 of each compartment supplies power to the servo motor 401;

[0086] The output shaft of the servo motor 401 drives the flexible gear harmonic reducer 403 through the gear box 402, and transmits to the rotating main shaft of the seat through chain transmission, and drives the angular contact bearing 405 to rotate;

[0087] The Hall sensor 404 monitors the rotation angle, position and other parameters of the seat in real time, and transmits the data to the central control system 101 through the CAN bus, dynamically corrects the deviation, ensures that the positioning error of 180° is ≤±0.3°, and finally faces the driving direction of the vehicle.

[0088] Step 5, state feedback and abnormal processing:

[0089] After the seat is rotated to the position, the servo motor 401 sends a "completion signal" to the central control system 101, and when the direction of the seat is consistent with the "direction arrow" of the vehicle, the man-machine interaction control module 104 updates the seat state to green;

[0090] If the seat encounters an obstacle or does not reach the target angle, it displays white, and the system automatically triggers a 3-time retry instruction (each time interval is 10 seconds) for correction, and if the 3-time retry fails, the system prompts manual inspection of the seat rotation execution mechanism 103.

[0091] The high-speed train seat automatic rotation control system and the control method thereof have the advantages that through seat pressure sensor automatic detection, servo motor and intelligent control algorithm technology, millisecond-level detection and 180° accurate rotation control (error ≤±0.3°) of the seat state are realized, the system adopts main and backup dual-redundancy controllers to improve the system reliability, and the seat state is displayed in real time through the man-machine interface, which is convenient for the driver to operate.

[0092] The high-speed train seat automatic rotation control system has the advantages of flexible multi-modal control mode, supports single-row / single-compartment / full-train hierarchical control mode, adapts to different operation scenes, has the characteristics of simple structure, convenient operation, high reliability, reduces manual operation, shortens the terminal station stay time, and optimizes the vehicle departure frequency.

[0093] The high-speed train seat automatic rotation control system of the application can automatically detect and control the rotation of the seat, display the seat state in real time through a man-machine interface display, realize fast, accurate and safe seat rotation by using a pressure sensor and a rotary motor, and does not need manual intervention, thereby improving work efficiency, shortening the stay time at the terminal station, optimizing the vehicle departure frequency, and significantly improving the high-speed train operation efficiency and passenger comfort.

[0094] Obviously, the above embodiments are only examples for clearly illustrating the application, and are not intended to limit the embodiments. Based on the above description, other different forms of changes or variations can be made by those skilled in the art. Here, all the embodiments do not need to be exhausted, and the obvious changes or variations derived therefrom are still within the protection scope of the application.

Claims

1. A high-speed train seat automatic rotation control system, characterized in that, The application relates to a seat rotating control system for a train, which comprises a central control system (101), a seat state detection module (102), a rotating actuating mechanism (103) and a man-machine interactive control module (104); the seat state detection module (102), the rotating actuating mechanism (103) and the man-machine interactive control module (104) are connected with the central control system (101) in control respectively. The central control system (101) comprises a main controller and a standby controller; the main controller and the standby controller are connected with each car through CAN bus respectively; the main controller and the standby controller are the same in function and are used for controlling the working of the seat state detection module (102), the rotating actuating mechanism (103) and the man-machine interactive control module (104) respectively. The seat state detection module (102) comprises a high-precision piezoresistive sensor (301) arranged in a seat base (407) and used for detecting the seat occupancy state in real time; the data of the seat occupancy state is uploaded to the man-machine interactive control module (104) in real time through the CAN bus. The rotating actuating mechanism (103) comprises a servo motor (401), a gear box (402), a flexible gear harmonic reducer (403) and an angular contact bearing (405) connected in sequence; the top end of the angular contact bearing (405) is arranged in a V-shaped sliding groove (406) below the seat base (407), and a Hall sensor (404) is arranged on the angular contact bearing (405); the rotating actuating mechanism (103) is connected with a three-phase alternating current power supply (302); the servo motor (401) is used for combining the gear box (402) and the flexible gear harmonic reducer (403) to control the position accurately; the gear box (402) is used for optimizing the gear transmission ratio and reducing the starting torque; the flexible gear harmonic reducer (403) is used for utilizing the controllable elastic deformation wave generated by the flexible gear to cause the relative tooth error between the rigid gear and the flexible gear to transmit power and motion; the angular contact bearing (405) is used for utilizing the power transmitted by the flexible gear harmonic reducer (403) to drive the seat base (407) above the V-shaped sliding groove (406) to rotate; the Hall sensor (404) is used for monitoring the seat parameters in real time and feeding back the rotating angle in real time; the V-shaped sliding groove (406) is used for matching the angular contact bearing (405) to improve the rotating stability and realize the 180-degree rotation of the seat. The man-machine interactive control module (104) comprises a high-definition capacitive touch HMI display screen used for displaying the real-time seat state and the rotating process. The main controller and the standby controller support seat rotating history data storage and fault recording respectively. The central control system (101) is used for working through the main controller or the standby controller to realize the function of the central control system (101); when the main controller fails, the central control system (101) automatically switches to the standby controller to work; when the standby controller fails, the central control system (101) automatically switches to the main controller to work.

2. The high-speed train seat automatic rotation control system according to claim 1, characterized in that, The range of the high-precision piezoresistive sensor (301) is 0-300kg, and the precision is + / -0.5%; the precision of the Hall sensor (404) is + / -0.1 degree.

3. The automatic rotation control system of high-speed train seat according to claim 1, characterized in that, ​ 4. The automatic rotation control system of high-speed train seat according to claim 1, characterized in that, ​ 5. The automatic rotation control system of high-speed train seat according to claim 1, characterized in that, In the human-computer interaction control module (104), the seat state is displayed in red, green and white, representing the occupied, completed and idle states respectively.

6. The automatic rotation control system of high-speed train seat according to claim 1, characterized in that, The angular velocity of rotation of the angular contact bearing (405) is 5° / s.

7. The automatic rotation control system of high-speed train seat according to claim 1, characterized in that, The gear transmission ratio of the gear box (402) is 1:

25.

8. A control method of the high-speed train seat automatic rotation control system according to any one of claims 1 to 7, characterized in that, The method comprises the following steps: Step 1, end change mode activation: control the vehicle to enter the end change mode; Step 2, seat occupancy state detection: the seat enters the powered state detection stage; Step 3, rotation instruction issuance: the human-computer interaction control module (104) selects a seat rotation control mode according to the requirement and issues a seat rotation control instruction; Step 4, seat transmission execution: the human-computer interaction control module (104) transmits the control instruction to the servo motor (401) through the vehicle serial signal control CAN bus, establishes the system communication link data transmission and communication connection; the three-phase alternating current power supply (302) of each car compartment supplies power to the servo motor (401); the output shaft of the servo motor (401) drives the flexible gear harmonic reducer (403) through the gear box (402) to transmit to the rotating main shaft of the seat, and drives the angular contact bearing (405) to rotate; the Hall sensor (404) monitors the parameters of the seat in real time, and the data is transmitted to the central control system (101) through the CAN bus, and the deviation is dynamically corrected; Step 5, state feedback and abnormality processing: after the seat is rotated to the position, the servo motor (401) sends a completion signal to the central control system (101), when the direction of the seat faces is consistent with the direction of the vehicle, the human-computer interaction control module (104) updates the seat state to green; if the seat collides with an obstacle or does not reach the target angle, white is displayed, the system automatically triggers a 3-time retry instruction for correction, and if the 3-time retry still fails, the system prompts manual inspection of the seat rotation actuator (103).

9. The control method according to claim 8, characterized by, Step 2 specifically: whether the seat is occupied is detected by using a high-precision piezoresistive sensor (301), the seat occupancy state is transmitted in real time through the vehicle serial control CAN bus, and the seat state is transmitted to the human-computer interaction control module (104) in real time through the CAN bus communication protocol, and the real-time state of the seat is displayed.

10. The control method according to claim 8, characterized by, In step 3, the human-computer interaction control module (104) selects a seat rotation control mode according to the requirement, including: full-column control mode, single-carriage mode and single-row mode; wherein in the full-column control mode, all the car seats are rotated synchronously; in the single-carriage mode, the seat of the selected single-carriage target car is rotated; and in the single-row mode, the seat of the selected single row is adjusted.

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