Multi-motor synchronous control system of automobile display screen

Abstract

The utility model provides a multi-motor synchronous control system of an automobile display screen, which is used for controlling translation of the display screen and comprises a main control module, a translation control module, a translation motor, an overturning control module and an overturning motor. The translation control module is respectively connected with the main control module and the translation motor and is used for driving the translation motor according to a control command of the main control module; the overturning control module is connected with the main control module and the overturning motor. The overturning control module is used for driving the overturning motor according to a control command of the main control module. The translation control modules are in one-to-one correspondence with the translation motors; the overturning control modules are in one-to-one correspondence with the overturning motors; and at least one of the translation control modules and the turnover control modules is provided with two groups, so that when the driving motor translates or turns over, stronger driving force is provided, and the problems of shaking and the like are prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle-mounted display screens, and particularly relates to a multi-motor synchronous control system for an automotive display screen. Background Art

[0002] With the rapid development of the electric vehicle market, new energy vehicles have become an important part of the automotive industry, showing great potential in energy conservation, environmental protection and intelligence. Against this background, the technological innovation and application of electric vehicles are accelerating continuously. In particular, for the vehicle-mounted display system, both the screen size and the intelligence level have been significantly improved.

[0003] The vehicle-mounted display system is an important interface for interaction between the vehicle and the driver and passengers. It not only provides basic information such as vehicle status, navigation, and entertainment, but also improves the convenience and safety of driving through intelligent interaction. However, with the continuous increase in the size of vehicle-mounted display screens, the traditional single-motor control scheme can no longer meet the high-precision control requirements of the display screen in complex movements such as translation and flipping.

[0004] The existing vehicle-mounted display screen motion control schemes mostly use a single motor or a mechanical transmission mechanism to achieve the motion of the display screen. This scheme has obvious deficiencies in terms of control accuracy, response speed, and stability. Especially in the application of large-size display screens, a single motor is difficult to provide sufficient driving force and precise control, resulting in problems such as jitter and offset during the translation and flipping of the display screen, seriously affecting the user experience of the driver. Summary of the Utility Model

[0005] To solve the above problems, the present patent application proposes an innovative technology for the motion mechanism of a vehicle-mounted display screen based on dual-motor control. Two motors are used to control the translation and flipping motions of the display screen respectively, so as to have a stronger driving force to prevent problems such as jitter.

[0006] The utility model is realized through the following technical solutions:

[0007] A multi-motor synchronous control system for an automotive display screen, used to control the translation of the display screen, is characterized in that it includes: a main control module, a translation control module, a translation motor, a flipping control module, and a flipping motor; the translation control module is respectively connected to the main control module and the translation motor, and the translation control module is used to drive the translation motor according to the control command of the main control module; the flipping control module is respectively connected to the main control module and the flipping motor, and the flipping control module is used to drive the flipping motor according to the control command of the main control module; the translation control module and the translation motor are in one-to-one correspondence; the flipping control module and the flipping motor are in one-to-one correspondence; wherein, at least one of the translation control module and the flipping control module is provided with two groups.

[0008] Further, two sets of the translation control module and the flipping control module are provided.

[0009] Further, the translation control module includes a translation motor driving component and a position detection component; the position detection component is respectively connected to the translation motor and the main control module, and the position detection component is used to collect the initial position signal of the translation motor and send it to the main control module; the translation motor driving component is respectively connected to the translation motor and the main control module, and the translation motor driving component is used to drive the translation motor according to the control command of the main control module.

[0010] Further, the flipping control module includes a flipping motor driving component and an angle detection component; the angle detection component is respectively connected to the flipping motor and the main control module, and the angle detection component is used to collect the angle signal of the flipping motor and send it to the main control module; the flipping motor driving component is respectively connected to the flipping motor and the main control module, and the flipping motor driving component is used to drive the flipping motor according to the control command of the main control module.

[0011] Further, the translation motor driving component includes a translation driving component, a rotor detection component and a three-phase driving component; the rotor detection component and the three-phase driving component are respectively connected to the translation driving component, the rotor detection component is used to detect the position of the motor rotor and transmit it to the translation driving component, and the translation driving component is connected to the main control module, and is used to control the three-phase driving component to drive the translation motor according to the control command of the main control module and the position of the motor rotor.

[0012] Further, the flipping motor driving component includes a flipping driving component, a rotor detection component and a three-phase driving component; the rotor detection component and the three-phase driving component are respectively connected to the flipping driving component, the rotor detection component is used to detect the position of the motor rotor and transmit it to the flipping driving component, and the flipping driving component is connected to the main control module, and is used to control the three-phase driving component to drive the flipping motor according to the control command of the main control module and the position of the motor rotor.

[0013] Further, the position detection component includes a detection switch, the detection switch is connected to the main control module, and one contact of the detection switch is grounded; when the motor is in the initial position, the motor presses the detection switch to conduct with the ground, and the main control module receives a low level; when the motor is not in the initial position, the detection switch bounces off, and the main control module receives a high level.

[0014] Further, the angle detection component includes a Hall sensor chip arranged on the rotating shaft of the flipping motor.

[0015] Further, the rotor detection component includes a position sensor, and the position sensor is used to detect the position of the motor rotor and transmit it to the translation motor driving component or the flipping motor driving component.

[0016] Compared with the prior art, the technical solution of the present utility model and its beneficial effects are as follows:

[0017] (1) The automotive display screen of the present utility model adopts a dual-motor collaborative control scheme, so that when the driving motor translates or flips, it has a stronger driving force. It realizes high-precision control, fast response and stable operation of the display screen during translation or flipping motion, and effectively avoids problems such as jitter and offset of the display screen during the motion process. Through real-time speed feedback and angle difference adjustment, the two translation control modules and the two flipping control modules can ensure that the motors they drive operate at the same speed and angle, thus greatly improving the accuracy and stability of the motion.

[0018] (2) By real-time monitoring of the operating state and angle information of the motor, the system can promptly detect and handle abnormal situations (such as motor failures, speed mismatches, etc.), thereby improving the reliability and stability of the entire system.

[0019] (3) The hardware cost of this system may be slightly higher than that of traditional single-motor control systems, but due to its higher precision, stability and reliability, as well as better user experience and scalability, it can bring more value and returns to users and manufacturers in the long run. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a block diagram of a multi-motor synchronous control system for an automotive display screen provided by an embodiment of the present utility model;

[0021] Figure 2 is a schematic diagram of the main control module provided by an embodiment of the present utility model;

[0022] Figure 3 is a schematic circuit diagram of the in-place detection component provided by an embodiment of the present utility model;

[0023] Figure 4 is a schematic circuit diagram of the angle detection component provided by an embodiment of the present utility model;

[0024] Figure 5 is a schematic circuit diagram of the translation drive component or the flipping drive component provided by an embodiment of the present utility model;

[0025] Figure 6 is a schematic circuit diagram of the rotor detection component provided by an embodiment of the present utility model;

[0026] Figure 7 is a schematic circuit diagram of the three-phase drive component provided by an embodiment of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are some, but not all, of the embodiments of the present utility model. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0028] Refer to Figure 1 , a multi-motor synchronous control system for controlling the translation of a display screen, comprising: a main control module, a translation control module, a translation motor, a flipping control module, and a flipping motor. The translation control module is respectively connected to the main control module and the translation motor, and the translation control module is used to drive the translation motor according to the control command of the main control module; the flipping control module is respectively connected to the main control module and the flipping motor, and the flipping control module is used to drive the flipping motor according to the control command of the main control module. The translation control module and the translation motor are in one-to-one correspondence; the flipping control module and the flipping motor are in one-to-one correspondence; at least two of the translation control module and the flipping control module are provided with two groups, so as to have a stronger driving force when driving the motor to translate or flip, so as to prevent problems such as jitter. In this embodiment, both the translation control module and the flipping control module are provided with two groups.

[0029] Continue to refer to Figure 1 , the translation control module includes a translation motor driving component and a position detection component; the position detection component is respectively connected to the translation motor and the main control module, and the position detection component is used to collect the initial position signal of the translation motor and send it to the main control module; the translation motor driving component is respectively connected to the translation motor and the main control module, and the translation motor driving component is used to drive the translation motor according to the control command of the main control module.

[0030] Refer to Figure 2 and Figure 3 , the position detection component includes a detection switch, the detection switch is connected to the main control module, and one contact of the detection switch is grounded; when the motor is in the initial position, the motor presses the detection switch to conduct with the ground, and the main control module receives a low level; when the motor is not in the initial position, the detection switch bounces off, and the main control module receives a high level.

[0031] Continue to refer to Figure 1, the flipping control module includes a flipping motor drive component and an angle detection component; the angle detection component is respectively connected to the flipping motor and the main control module, and is used to collect the angle signal of the flipping motor and send it to the main control module; the flipping motor drive component is respectively connected to the flipping motor and the main control module, and is used to drive the flipping motor according to the control command of the main control module.

[0032] Refer to Figure 2 and Figure 4 , the angle detection component includes a Hall sensor chip, and the Hall sensor chip is arranged on the rotating shaft of the flipping motor and is used to detect the real-time rotation angle of the motor rotating shaft.

[0033] Refer to Figures 5 to 7 , the translation motor drive component includes a translation drive component, a rotor detection component and a three-phase drive component; the rotor detection component and the three-phase drive component are respectively connected to the translation drive component, and the rotor detection component is used to detect the position of the motor rotor and transmit it to the translation drive component. The translation drive component is connected to the main control module and is used to control the three-phase drive component to drive the translation motor according to the control command of the main control module and the position of the motor rotor. The flipping motor drive component includes a flipping drive component, a rotor detection component and a three-phase drive component; the rotor detection component and the three-phase drive component are respectively connected to the flipping drive component, and the rotor detection component is used to detect the position of the motor rotor and transmit it to the flipping drive component. The flipping drive component is connected to the main control module and is used to control the three-phase drive component to drive the flipping motor according to the control command of the main control module and the position of the motor rotor.

[0034] The rotor detection component includes a position sensor. In this embodiment, the position sensor uses three Hall sensors SEN1, SEN2, and SEN3, and the three Hall sensors SEN1, SEN2, and SEN are in one-to-one correspondence with the three phases U, V, and W of the three-phase motor. Thus, the change of the magnetic pole can be detected in each phase, so as to more accurately determine the position of the rotor and send the position information to the translation drive component or the flipping drive component.

[0035] The two-way translation control module realizes the initial position calibration through the in-place detection component, controls the translation motor to work and the display screen to translate, and performs speed feedback, and adjusts in real time to translate at the same speed to achieve translation synchronous control. The two-way flipping control module detects the Hall angle size of each flipping motor through the angle detection component, thereby controlling the flipping motor to work and the display screen to flip, and adjusts in real time to flip at the same angle according to the respective angle differences to achieve flipping synchronous control. Among them, the main control module uses an existing motor control algorithm, such as the FOC algorithm, to control the motor through the received detection data.

[0036] The above description shows and describes the preferred embodiments of the present utility model. It should be understood that the present utility model is not limited to the form disclosed herein, should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be changed within the scope of the concept of the present utility model herein through the above teachings or the techniques or knowledge in related fields. Any changes and modifications made by those skilled in the art without departing from the spirit and scope of the present utility model shall fall within the protection scope of the appended claims of the present utility model.

Claims

1. A multi-motor synchronous control system for a car display screen, used to control the translation of the display screen, characterized in that: include: Main control module, translation control module, translation motor, flip control module and flip motor; The translation control module is connected to the main control module and the translation motor respectively, and the translation control module is used to drive the translation motor according to the control command of the main control module; the flip control module is connected to the main control module and the flip motor respectively, and the flip control module is used to drive the flip motor according to the control command of the main control module; The translation control module corresponds to the translation motor one by one; the flip control module corresponds to the flip motor one by one; Wherein, at least one of the translation control module and the flip control module is provided with two groups.

2. A multi-motor synchronous control system for a car display screen according to claim 1, characterized in that: The translation control module and the flip control module are both provided in two groups.

3. A multi-motor synchronous control system for a car display screen according to claim 1, characterized in that: The translation control module includes a translation motor drive component and an in-position detection component; the in-position detection component is respectively connected to the translation motor and the main control module, and the in-position detection component is used to collect the initial position signal of the translation motor and send it to the main control module; the translation motor drive component is respectively connected to the translation motor and the main control module, and the translation motor drive component is used to drive the translation motor according to the control command of the main control module.

4. A multi-motor synchronous control system for a car display screen according to claim 1, characterized in that: The flip control module includes a flip motor drive component and an angle detection component; the angle detection component is respectively connected to the flip motor and the main control module, and the angle detection component is used to collect the angle signal of the flip motor and send it to the main control module; the flip motor drive component is respectively connected to the flip motor and the main control module, and the flip motor drive component is used to drive the flip motor according to the control command of the main control module.

5. The multi-motor synchronous control system of a car display screen according to claim 3, characterized in that: The translation motor drive component includes a translation drive component, a rotor detection component and a three-phase drive component; the rotor detection component and the three-phase drive component are respectively connected to the translation drive component, the rotor detection component is used to detect the motor rotor position and transmit it to the translation drive component, and the translation drive component is connected to the main control module, and is used to control the three-phase drive component to drive the translation motor according to the control command of the main control module and the motor rotor position.

6. A multi-motor synchronous control system for a car display screen according to claim 3, characterized in that: The in-position detection component includes a detection switch, which is connected to the main control module, and one contact of the detection switch is grounded; when the motor is in the initial position, the motor presses the detection switch to conduct with the ground, and the main control module receives a low level; when the motor is not in the initial position, the detection switch pops open, and the main control module receives a high level.

7. A multi-motor synchronous control system for a car display screen according to claim 4, characterized in that: The flip motor drive component includes a flip drive component, a rotor detection component and a three-phase drive component; the rotor detection component and the three-phase drive component are respectively connected to the flip drive component, the rotor detection component is used to detect the motor rotor position and transmit it to the flip drive component, and the flip drive component is connected to the main control module, and is used to control the three-phase drive component to drive the flip motor according to the control command of the main control module and the motor rotor position.

8. The multi-motor synchronous control system of a car display screen according to claim 4, characterized in that: The angle detection component includes a Hall sensor chip arranged on the rotating shaft of the flip motor.

9. A multi-motor synchronous control system for a car display screen according to claim 5 or 7, characterized in that: The rotor detection component includes a position sensor, which is used to detect the rotor position of the motor and transmit it to the translation motor drive component or the flip motor drive component.

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