Electric air outlet device capable of controlling multiple motors based on embedded system
By using an embedded system to control multiple motors, the problem of wiring waste and complex wiring in traditional electric air vent devices is solved, achieving cost savings and wiring optimization, and improving the overall space utilization and control efficiency of electric vehicles.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-26
- Publication Date
- 2026-03-06
AI Technical Summary
Traditional electric air vent devices require multiple wiring harnesses and control equipment, which wastes space, increases wiring difficulty, and increases hardware development and maintenance costs.
The system adopts an embedded system design that controls multiple motors. It connects the control module and multiple drive motors through a single bus. The control module analyzes the signals from the car controller to achieve coordinated control of multiple motors.
Save on wiring harness costs, optimize wiring structure, reduce development and maintenance costs, and improve the utilization rate of vehicle space.
Smart Images
Figure CN223972398U_ABST
Abstract
Description
Technical Field
[0001] This technical solution relates to the field of electronic control technology, specifically to an electric air outlet device based on an embedded system that controls multiple motors. Background Technology
[0002] With the rapid development of electric vehicles, the demand for electric air vents in vehicles is constantly increasing. Electric air vents utilize intelligent sensing technology to automatically adjust airflow direction and speed based on in-vehicle temperature, humidity, and passenger position, providing a personalized and comfortable experience, significantly improving driving safety and comfort, and enhancing the vehicle's technological appeal and market competitiveness. A complete electric air vent assembly typically requires left, center-left, center-right, and right-side vent structures. Each vent structure is controlled by a horizontal motor and vertical motors, each controlling the angle of the vent blades to achieve different airflow angles. Traditional motor control methods use a one-to-one control approach, requiring one wiring harness and a separate control device for each motor. This not only wastes limited vehicle space and increases the complexity of vehicle wiring but also incurs significant investment in software and hardware development and maintenance costs. Utility Model Content
[0003] This utility model provides an electric air outlet device based on an embedded system that controls multiple motors, in order to solve one or more technical problems existing in the prior art, and at least provide a beneficial option or create conditions.
[0004] An electric air outlet device based on an embedded system with one control and multiple motors is provided, comprising: a first wiring harness, a control module, n motor wiring harnesses, n drive motors, and m air outlet components;
[0005] The first wiring harness is used to connect an external vehicle controller, an external power supply, an external grounding terminal, and a control module. The first wiring harness is used to receive upper-level control signals output by the external vehicle controller. The control module is connected to n drive motors through n motor wiring harnesses, and the n motor wiring harnesses correspond one-to-one with the n drive motors. The control module is used to control the n drive motors to work after parsing the upper-level control signals. The n drive motors are used to drive m air outlet components.
[0006] Where n and m are both positive integers, n is greater than or equal to 1, and m is greater than or equal to 1.
[0007] As a further improvement to the above technical solution, each of the aforementioned air outlet components is equipped with two drive motors.
[0008] As a further improvement to the above technical solution, one of the drive motors inside the air outlet component rotates in a horizontal direction.
[0009] As a further improvement to the above technical solution, another motor inside the air outlet component rotates in a vertical direction.
[0010] As a further improvement to the above technical solution, the upper-level control signal is a LIN bus signal or a CAN bus signal.
[0011] As a further improvement to the above technical solution, the n drive motors can rotate in both directions.
[0012] As a further improvement to the above technical solution, the control module includes a microcontroller.
[0013] As a further improvement to the above technical solution, the n drive motors include stepper motors and servo motors.
[0014] The beneficial effects of this invention are: by using a single bus to control the operation of multiple motors, it saves wiring harness costs, optimizes the wiring harness layout of the entire vehicle, and significantly reduces the software and hardware development costs of the entire device by using only one control module, while also facilitating maintenance. This invention is mainly used in the field of electronic control technology. Attached Figure Description
[0015] The accompanying drawings are provided to further understand the technical solution of this utility model and constitute a part of the specification. They are used together with the embodiments of this utility model to explain the technical solution of this utility model, and do not constitute a limitation on the technical solution of this utility model.
[0016] Figure 1 This is a schematic diagram of the operation process of an electric air outlet device with one control and multiple motors based on an embedded system. Detailed Implementation
[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.
[0018] refer to Figure 1 and, Figure 1 This is a schematic diagram of the operation process of an electric air outlet device that controls multiple motors based on an embedded system.
[0019] With the rapid development of electric vehicles, the demand for electric air vents in vehicles is constantly increasing. Electric air vents utilize intelligent sensing technology to automatically adjust airflow direction and speed based on in-vehicle temperature, humidity, and passenger position, providing a personalized and comfortable experience, significantly improving driving safety and comfort, and enhancing the vehicle's technological appeal and market competitiveness. A complete electric air vent assembly typically requires left, center-left, center-right, and right-side vent structures. Each vent structure is controlled by a horizontal motor and vertical motors, each controlling the angle of the vent blades to achieve different airflow angles. Traditional motor control methods use a one-to-one control approach, requiring one wiring harness and a separate control device for each motor. This not only wastes limited vehicle space and increases the complexity of vehicle wiring but also incurs significant investment in software and hardware development and maintenance costs.
[0020] To address the aforementioned issues, this application provides an electric air outlet device based on an embedded system, comprising: a first wiring harness, a control module, n motor wiring harnesses, n drive motors, and m air outlet components.
[0021] The first wiring harness is used to connect the external vehicle controller, external power supply, external grounding terminal and control module. The first wiring harness is used to receive the upper-level control signal output by the external vehicle controller. The control module is connected to n drive motors through n motor wiring harnesses respectively. The n motor wiring harnesses correspond one-to-one with the n drive motors. The control module is used to control the n drive motors to work after parsing the upper-level control signal. The n drive motors are used to drive m air outlet components.
[0022] Where n and m are both positive integers, n is greater than or equal to 1, and m is greater than or equal to 1.
[0023] This embodiment uses a single bus to connect to the vehicle controller. The control module parses the upper-level control signals output by the vehicle controller to obtain the specific motors that need to be controlled. This can effectively reduce the cost of wiring harnesses, optimize the wiring structure, and only require maintenance of one controller, which greatly reduces the development difficulty and maintenance cost.
[0024] The vehicle controller is a core component of the vehicle's electronic system. Its main function is to control and manage the operating status of various vehicle components to achieve safe, efficient, and comfortable vehicle operation.
[0025] As a further improvement to the above technical solution, two drive motors are installed inside each air outlet component.
[0026] As a further improvement to the above technical solution, a drive motor inside the air outlet component rotates in a horizontal direction.
[0027] As a further improvement to the above technical solution, another motor inside the air outlet component rotates in a vertical direction.
[0028] As a further improvement to the above technical solution, the upper-level control signal is either a LIN bus signal or a CAN bus signal. LIN bus, short for Local Interconnect Network, is a low-cost serial communication network defined for automotive distributed electronic systems. The LIN bus is based on the SCI (UART) data format and uses a single master controller / multiple slave device mode for communication. In this mode, the master controller is responsible for managing and scheduling data transmission on the bus, while the slave devices respond according to the master controller's instructions. The LIN bus features low cost, low power consumption, and high reliability, making it particularly suitable for applications where network bandwidth, performance, or fault tolerance requirements are not excessively high.
[0029] CAN (Controller Area Network) bus is a serial communication protocol that effectively supports distributed or real-time control. Its characteristics include high reliability, real-time performance, and strong anti-interference capabilities. The CAN bus uses differential signals (CAN_H and CAN_L) for data transmission, a design that provides strong immunity to electrical noise. Furthermore, the CAN bus supports multi-master communication, meaning each node in the network can actively send data without the need for a central controller.
[0030] The upper-level control signal can also be other bus signals.
[0031] As a further improvement to the above technical solution, n drive motors can rotate in both directions. The forward and reverse rotation of the motors mainly relies on changing the direction of the current in the motor coils or the phase sequence of the motor power supply. When the direction of the current in the motor coils is the same as the direction of the magnetic field, the magnetic torque on the motor rotor is zero, the motor does not generate torque, and it is in a stopped state. However, when the direction of the current in the motor coils is changed to be opposite to the direction of the magnetic field, the magnetic torque on the motor rotor is positive, the motor generates positive torque, and forward rotation is achieved; conversely, reverse rotation is achieved.
[0032] As a further improvement to the above technical solution, the control module includes a microcontroller. A microcontroller, also known as a single-chip microcomputer or microcontroller (MCU), is an integrated circuit chip. Using very large-scale integrated circuit (VLSI) technology, a microcontroller integrates a central processing unit (CPU) with data processing capabilities, random access memory (RAM), read-only memory (ROM), multiple I / O ports and interrupt systems, timers / counters, and other functions (and may also include display driver circuits, pulse width modulation circuits, analog multiplexers, A / D converters, etc.) onto a single silicon chip, thus forming a small but complete microcomputer system.
[0033] As a further improvement to the above technical solution, the n drive motors include stepper motors and servo motors. A stepper motor, also known as a pulse motor, is a type of induction motor. Based on electromagnetic principles, it converts electrical energy into mechanical energy. Each time a stepper motor receives an electrical pulse signal, its rotor will precisely rotate by a fixed angle (step angle) or move forward a fixed distance. The working principle of a stepper motor is based on the principle of electromagnetism; it is a freely rotating electromagnet whose operation relies on changes in the air gap permeability to generate electromagnetic torque. The input pulse signal, after being amplified by the drive circuit, drives the electromagnet inside the stepper motor to generate a magnetic field, causing the rotor to rotate. By controlling the number and frequency of the input pulses and the phase sequence of the motor windings, the rotation angle, speed, and direction of rotation of the stepper motor can be precisely controlled.
[0034] The working principle of a servo motor can be simply summarized as: input control signal → servo controller → servo motor → output motion. A servo system consists of three parts: a servo motor, a servo controller, and a feedback device. It is an automatic control system that enables the output controlled variables, such as the position, orientation, and state of an object, to follow any changes in the input target (or given value). When a servo motor receives a pulse signal, it rotates by an angle corresponding to the pulse, thereby achieving displacement. Because the servo motor itself has the function of generating pulses, it generates a corresponding number of pulses for each rotation angle. This characteristic enables servo motors to achieve high-precision position control.
[0035] Although the description of this application has been quite detailed and particularly focused on the described embodiments, it is not intended to limit itself to any of these details or embodiments or any particular embodiment, but should be considered as effectively covering the intended scope of this application by referring to the appended claims and taking into account the prior art, which provides for a broad possible interpretation of these claims. Furthermore, the foregoing description of this application with respect to embodiments foreseeable by the inventors is intended to provide a useful description, and non-substantial modifications to this application that have not yet been foreseen may still represent equivalent modifications.
Claims
1. An electric air outlet device based on one control of multiple motors of an embedded system, characterized in that, The application relates to a vehicle air outlet device. The vehicle air outlet device comprises a first wire harness, a control module, n motor wire harnesses, n driving motors and m air outlet components. The first wire harness is used for connecting an external automobile controller, an external power supply, an external ground terminal and the control module, the first wire harness is used for receiving a superior control signal output by the external automobile controller, the control module is connected with the n driving motors through the n motor wire harnesses, the n motor wire harnesses correspond to the n driving motors one by one, the control module is used for controlling the n driving motors to work after analyzing the superior control signal, and the n driving motors are used for driving the m air outlet components. Wherein, n and m are positive integers, n is greater than or equal to 1, and m is greater than or equal to 1.
2. The one-control multi-motor electric air outlet device based on an embedded system according to claim 1, characterized in that, Each of the air outlet components is provided with two driving motors.
3. The one-control multi-motor electric air outlet device based on an embedded system according to claim 2, characterized in that, One of the driving motors in the air outlet component rotates in a horizontal direction.
4. The one-control multi-motor electric air outlet device based on an embedded system according to claim 2, characterized in that, The other driving motor in the air outlet component rotates in a vertical direction.
5. The one-control multi-motor electric air outlet device based on an embedded system according to claim 1, wherein, The superior control signal is a LIN bus signal or a CAN bus signal.
6. The one-control multi-motor electric air outlet device based on an embedded system according to claim 1, wherein, The n driving motors can be reversely rotated.
7. The one-control multi-motor electric air outlet device based on an embedded system of claim 1, wherein, The control module comprises a single-chip microcomputer.
8. The one-control multi-motor electric air outlet device based on an embedded system of claim 1, wherein, The n driving motors comprise step motors and servo motors.