CN112498463B

CN112498463B - Method, device, system, apparatus and storage medium for controlling electric steering column

Info

Publication number: CN112498463B
Application number: CN202011454638.4A
Authority: CN
Inventors: 张周辉; 高仕宁; 王立军; 赵斌; 路胜利; 方磊
Original assignee: FAW Group Corp
Current assignee: FAW Group Corp
Priority date: 2020-12-10
Filing date: 2020-12-10
Publication date: 2022-03-25
Anticipated expiration: 2040-12-10
Also published as: CN112498463A

Abstract

The embodiment of the invention discloses a control method, a control device, a control system, control equipment and a storage medium for an electric steering column. The method comprises the following steps: when the initial position coordinate of the driving seat and the initial eyepoint position of the driver are received, the initial position coordinate of the eyepoint position of the driver is obtained; according to the initial position coordinates of the driving seat and the initial position coordinates of the eyepoint position of the driver, the target position coordinates of the electric steering column are determined, the forward and backward moving direction, the forward and backward moving distance, the upward and downward moving direction and the upward and downward moving distance of the electric steering column are determined, the forward and backward moving direction and the forward and backward moving distance are sent to the first motor, the upward and downward moving direction and the upward and downward moving distance are sent to the second motor, and the electric steering column is driven to move. According to the embodiment of the invention, after the driver determines the initial sitting posture, the electric steering column can be automatically controlled to move to the optimal position corresponding to the initial sitting posture according to the current position coordinate of the driving seat and the eye point position of the driver.

Description

Method, device, system, apparatus and storage medium for controlling electric steering column

Technical Field

The embodiment of the invention relates to the technical field of computers, in particular to a control method, a control device, a control system, control equipment and a storage medium for an electric steering column.

Background

After the driver gets on the vehicle, the driver firstly needs to adjust the steering wheel to a proper position relative to the driver so as to meet the operation requirement of the driver on the steering wheel and the requirement of observing the combination instrument through the steering wheel.

In the related art, after a driver gets on the vehicle, the driver firstly finds a proper driving position by adjusting the seat back and forth and up and down, and then drives the steering wheel to move by controlling the electric steering column to move back and forth and up and down so as to find a proper position of the steering wheel relative to the driver. The related art adjustment of the electric steering column is based on the driver's autonomous adjustment. The driver may adjust the steering column position unreasonably sometimes in the adjustment process, resulting in the steering column position low, influence driver's shank space or see through the steering wheel and observe that combination meter information has partial sheltering from, cause the hidden danger to driving safety.

Disclosure of Invention

The embodiment of the invention provides a control method, a device, a system, equipment and a storage medium for an electric steering column, which are used for automatically controlling the electric steering column to drive a steering wheel to move, adjusting the steering wheel to a proper position relative to a driver, automatically meeting the operating requirement of the driver on the steering wheel and the requirement of observing a combination instrument through the steering wheel, and improving the vehicle intelligence level and the user driving experience.

In a first aspect, an embodiment of the present invention provides a method for controlling an electric steering column, including:

when receiving an initial position coordinate of a driving seat and an initial eye point position of a driver, converting the initial eye point position into a coordinate under a whole vehicle coordinate system to obtain the initial position coordinate of the eye point position of the driver;

the initial position coordinate of the driving seat is the position coordinate of the driving seat acquired by the seat position acquisition module when the seat position adjustment completion information is received, and the initial eye point position of the driver is the eye point position of the driver acquired by the eye point position acquisition module when the seat position adjustment completion information is received;

determining target position coordinates of the electric steering column according to the initial position coordinates of the driving seat and the initial position coordinates of the eye point position of the driver;

determining a front-back movement direction, a front-back movement distance, a front-up movement direction and a front-down movement distance of the electric steering column according to a position relation between a target position coordinate and a current position coordinate of the electric steering column;

sending the front-back moving direction and the front-back moving distance to a first motor, and sending the up-down moving direction and the up-down moving distance to a second motor, so that the first motor drives the electric steering column to move the front-back moving distance in the front-back moving direction, the second motor drives the electric steering column to move the up-down moving distance in the up-down moving direction, and the position coordinate of the electric steering column is adjusted to the target position coordinate from the current position coordinate;

the steering wheel of the vehicle is mounted on the electric steering column, the first motor and the second motor are respectively connected with the electric steering column, the first motor is used for driving the electric steering column to move back and forth, and the second motor is used for driving the electric steering column to move up and down.

In a second aspect, an embodiment of the present invention further provides a control device for an electric steering column, including:

the position coordinate acquisition module is used for converting the initial eye point position into a coordinate under a whole vehicle coordinate system when receiving the initial position coordinate of the driving seat and the initial eye point position of the driver to obtain the initial position coordinate of the eye point position of the driver;

the position coordinate determination module is used for determining the target position coordinate of the electric steering column according to the initial position coordinate of the driving seat and the initial position coordinate of the eyepoint position of the driver;

the mobile information determining module is used for determining the front-back movement direction, the front-back movement distance, the up-down movement direction and the up-down movement distance of the electric steering column according to the position relation between the target position coordinate and the current position coordinate of the electric steering column;

the position coordinate adjusting module is used for sending the forward and backward moving direction and the forward and backward moving distance to a first motor and sending the upward and downward moving direction and the upward and downward moving distance to a second motor so that the first motor drives the electric steering column to move the forward and backward moving distance in the forward and backward moving direction, the second motor drives the electric steering column to move the upward and downward moving distance in the upward and downward moving direction, and the position coordinate of the electric steering column is adjusted to the target position coordinate from the current position coordinate;

In a third aspect, an embodiment of the present invention further provides a control system for an electric steering column, including:

the device comprises a seating identification module, a man-machine interaction module, a seat position acquisition module, an eyepoint position acquisition module, a control module, a first motor, a second motor and an electric steering column;

the steering wheel of the vehicle is mounted on the electric steering column, the first motor and the second motor are respectively connected with the electric steering column, the first motor is used for driving the electric steering column to move back and forth, and the second motor is used for driving the electric steering column to move up and down;

the seating recognition module is used for judging whether a driver sits on the driving seat or not according to the locking information of the vehicle, the opening and closing information of the vehicle door and a seat occupancy sensor trigger signal of the driving seat; if the driver is determined to be seated on the driving seat, seat entering completion information is sent to the man-machine interaction module;

the human-computer interaction module is used for prompting the driver to adjust the position of the driving seat when the seating completion information is received, and inputting adjustment completion information after the driving seat is determined to be adjusted to a proper seat position; when the adjustment completion information input by the driver is acquired, sending seat position adjustment completion information to the seat position acquisition module and the eyepoint position acquisition module;

the seat position acquisition module is used for acquiring the initial position coordinate of the driving seat and sending the initial position coordinate of the driving seat to the control module when the seat position adjustment completion information is received;

the eyepoint position acquisition module is used for acquiring the initial eyepoint position of the driver and sending the initial eyepoint position of the driver to the control module when the seat position adjustment completion information is received;

the control module is used for converting the initial eye point position into a coordinate under a whole vehicle coordinate system when receiving the initial position coordinate of the driving seat and the initial eye point position of the driver to obtain the initial position coordinate of the eye point position of the driver; determining target position coordinates of the electric steering column according to the initial position coordinates of the driving seat and the initial position coordinates of the eye point position of the driver; determining a front-back movement direction, a front-back movement distance, a front-up movement direction and a front-down movement distance of the electric steering column according to a position relation between a target position coordinate and a current position coordinate of the electric steering column; and sending the forward and backward moving direction and the forward and backward moving distance to the first motor, and sending the upward and downward moving direction and the upward and downward moving distance to the second motor, so that the first motor drives the electric steering column to move the forward and backward moving distance in the forward and backward moving direction, the second motor drives the electric steering column to move the upward and downward moving distance in the upward and downward moving direction, and the position coordinate of the electric steering column is adjusted to the target position coordinate from the current position coordinate.

In a fourth aspect, an embodiment of the present invention further provides a computer device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, and when the processor executes the computer program, the processor implements the control method of the electric steering column according to the embodiment of the present invention.

In a fifth aspect, the embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, wherein the computer program is used for implementing the control method of the electric steering column according to the embodiment of the present invention when being executed by a processor.

According to the technical scheme of the embodiment of the invention, when the initial position coordinate of the driving seat and the initial eye point position of the driver are received, the initial eye point position is converted into the coordinate under the whole vehicle coordinate system to obtain the initial position coordinate of the eye point position of the driver, then the target position coordinate of the electric steering column is determined according to the initial position coordinate of the driving seat and the initial position coordinate of the eye point position of the driver, the front-back movement direction, the front-back movement distance, the up-down movement direction and the up-down movement distance of the electric steering column are determined according to the position relation between the target position coordinate of the electric steering column and the current position coordinate, finally the front-back movement direction and the front-back movement distance are sent to the first motor, the up-down movement direction and the up-down movement distance are sent to the second motor, so that the first motor drives the electric steering column to move the front-back movement distance towards the front-back movement direction, the second motor drives the electric steering column to move up and down for a distance in the up-and-down moving direction, the position coordinate of the electric steering column is adjusted to a target position coordinate from the current position coordinate, the position coordinate of the optimal position of the electric steering column corresponding to the initial sitting posture of the driver can be determined according to the initial position coordinate of the driving seat and the initial eye point position of the driver after the driver adjusts the driving seat to the proper seat position, the position coordinate of the optimal position of the electric steering column can be driven to move back and forth and/or up and down according to the position relation between the position coordinate of the optimal position of the electric steering column and the current position coordinate, the position coordinate of the electric steering column is adjusted to the position coordinate of the optimal position from the current position coordinate, and the aim that the driver adjusts the driving seat to the proper seat position is achieved, after the driver determines the initial sitting posture, the electric steering column is automatically controlled to move to the optimal position corresponding to the initial sitting posture of the driver according to the position coordinates of the current driving seat and the eyepoint position of the driver, so that the steering wheel mounted on the electric steering column is adjusted to the appropriate position relative to the driver in the initial sitting posture, the driver in the initial sitting posture is guaranteed to have enough leg space, the driver in the initial sitting posture is guaranteed to be capable of observing information of the combination instrument comprehensively through the steering wheel, and the control requirement of the driver on the steering wheel and the requirement of observing the combination instrument through the steering wheel are met.

Drawings

Fig. 1 is a flowchart of a control method for an electric steering column according to an embodiment of the present invention.

Fig. 2 is a flowchart of a control method of an electric steering column according to a second embodiment of the present invention.

Fig. 3 is a schematic structural diagram of a control device of an electric steering column according to a third embodiment of the present invention.

Fig. 4 is a schematic structural diagram of a control system of an electric steering column according to a fourth embodiment of the present invention.

Fig. 5 is a schematic structural diagram of a computer device according to a fifth embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention.

It should be further noted that, for the convenience of description, only some but not all of the relevant aspects of the present invention are shown in the drawings. Before discussing exemplary embodiments in more detail, it should be noted that some exemplary embodiments are described as processes or methods depicted as flowcharts. Although a flowchart may describe the operations (or steps) as a sequential process, many of the operations can be performed in parallel, concurrently or simultaneously. In addition, the order of the operations may be re-arranged. The process may be terminated when its operations are completed, but may have additional steps not included in the figure. The processes may correspond to methods, functions, procedures, subroutines, and the like.

Example one

Fig. 1 is a flowchart of a control method for an electric steering column according to an embodiment of the present invention. The embodiment of the invention can be applied to the situation that the electric steering column on the vehicle is controlled to drive the steering wheel to move, and the steering wheel is adjusted to a proper position relative to the driver. By way of example, the computer device may be a controller inside the vehicle, or may be a server, a cloud platform, a computer, a mobile phone, a tablet, and the like with communication, computing, and storage functions, without limitation.

As shown in fig. 1, the method of the embodiment of the present invention specifically includes:

step 101, when receiving an initial position coordinate of a driving seat and an initial eyepoint position of a driver, converting the initial eyepoint position into a coordinate under a whole vehicle coordinate system to obtain the initial position coordinate of the eyepoint position of the driver.

The initial position coordinate of the driving seat is the position coordinate of the driving seat acquired by the seat position acquisition module when the seat position adjustment completion information is received, and the initial eye point position of the driver is the eye point position of the driver acquired by the eye point position acquisition module when the seat position adjustment completion information is received.

The driver seat is a seat provided to a driver in the vehicle. A driver sits on a driving seat and drives a vehicle by operating a steering wheel and the like. The position coordinates are coordinates in the entire vehicle coordinate system of the vehicle. The position coordinates of the driver seat are coordinates of the driver seat in the entire vehicle coordinate system of the vehicle. The seat position acquisition module is a module for acquiring position coordinates of the driving seat. Optionally, the seat position acquisition module comprises a position sensor installed at a designated position of the driving seat. When the seat position adjustment completion information is received, the position sensor collects position coordinates of the driving seat, determines the collected position coordinates as initial position coordinates of the driving seat, and sends the position coordinates to computer equipment for controlling an electric steering column on the vehicle.

The eyepoint position may be a central point position of pupils of both eyes of the driver. The eyepoint position acquisition module is a module for acquiring the eyepoint position of the driver. Optionally, the eyepoint position acquisition module includes cameras installed at designated positions at both ends of the vehicle. When the seat position adjustment completion information is received, the cameras installed at the designated positions at the two ends of the vehicle collect the eye point positions of the driver, determine the collected eye point positions as the initial eye point positions of the driver, and send the initial eye point positions to the computer equipment for controlling the electric steering column on the vehicle.

The seat position adjustment completion information is information indicating that the driver has seated on the driver seat and has adjusted the driver seat to an appropriate seat position, indicating that the driver has determined the initial sitting posture after getting on the vehicle. The initial sitting position is a sitting position in which the driver gets on the vehicle, sits on the driver's seat, and adjusts the driver's seat to an appropriate seat position. The driver starts driving the vehicle based on the initial sitting posture.

When receiving the seat position adjustment completion information, the seat position acquisition module acquires the initial position coordinates of the driving seat and sends the initial position coordinates of the driving seat to computer equipment for controlling an electric steering column on the vehicle. The initial position coordinates of the driving seat are the position coordinates of the driving seat acquired by the seat position acquisition module after the driver sits on the driving seat after getting on the vehicle and adjusts the driving seat to a proper seat position, namely the position coordinates of the driving seat acquired after the driver determines an initial sitting posture. The eyepoint position acquisition module acquires an initial eyepoint position of a driver when receiving seat position adjustment completion information, and sends the initial eyepoint position of the driver to computer equipment for controlling an electric steering column on a vehicle. The initial eyepoint position of the driver is the eyepoint position of the driver acquired by the eyepoint position acquisition module after the driver sits on the driving seat after getting on the vehicle and adjusts the driving seat to a proper seat position, namely the eyepoint position of the driver acquired after the driver determines the initial sitting posture.

Optionally, a seating recognition module and a human-computer interaction module are arranged on the vehicle. The seating recognition module is used for judging whether a driver sits on the driving seat or not according to the locking information of the vehicle, the opening and closing information of the vehicle door and a seat occupancy sensor trigger signal of the driving seat; and if the driver is determined to be seated on the driving seat, sending seating completion information to the human-computer interaction module. The human-computer interaction module is used for prompting the driver to adjust the position of the driving seat when the seating completion information is received, and inputting adjustment completion information after the driving seat is determined to be adjusted to a proper seat position; and when the adjustment completion information input by the driver is acquired, sending the adjustment completion information of the seat position to the seat position acquisition module and the eyepoint position acquisition module.

The seating recognition module is a module for judging whether a driver is seated on the driving seat. The seating completion information is information indicating that the driver has been seated on the driver seat. The locking information of the vehicle may include a vehicle locking state of the vehicle. The vehicle locked state of the vehicle may be an locked state or an unlocked state. The vehicle is normally locked when the driver leaves the vehicle, and the vehicle lock state of the vehicle is the locked state. When a driver gets on the vehicle, the vehicle is unlocked, and the vehicle locking state of the vehicle is the unlocking state. The door opening and closing information may include a door opening and closing state. The door opening and closing state may be a door opening state or a door closing state. A seat occupancy sensor is disposed on the driver seat. The seat occupancy sensor is used to detect whether a person is in the driving seat. When the seat occupancy sensor detects that a person is in the driving seat, a trigger signal is output. The trigger signal is the seat occupancy sensor trigger signal.

When a driver sits on a driving seat, the vehicle locking state of the vehicle is the unlocking state, the vehicle door opening and closing state of the vehicle is the vehicle door closing state, the seat occupancy sensor detects that people are on the driving seat, and a seat occupancy sensor trigger signal is output. Therefore, the seating recognition module determines that the vehicle locking state of the vehicle is the unlocking state according to the locking information of the vehicle, the vehicle door opening and closing information and the seat occupancy sensor trigger signal of the driving seat, the vehicle door opening and closing state of the vehicle is the vehicle door closing state, and when the seat occupancy sensor arranged on the driving seat outputs the seat occupancy sensor trigger signal, the driver can be determined to have seated on the driving seat, namely the driver has normally seated, and then the seating completion information is sent to the human-computer interaction module.

Optionally, the seating recognition module determines whether the driver sits on the driving seat according to locking information of the vehicle, opening and closing information of the vehicle door and a seat occupancy sensor trigger signal of the driving seat, and may include: the seating recognition module judges whether the vehicle locking state of the vehicle is an unlocking state or not according to the locking information of the vehicle; if the vehicle locking state of the vehicle is the unlocking state, the seating recognition module judges whether the vehicle door opening and closing state of the vehicle is the vehicle door closing state or not according to the vehicle door opening and closing information; if the vehicle door opening and closing state of the vehicle is the vehicle door closing state, the seating recognition module judges whether a seat occupancy sensor arranged on a driving seat outputs a seat occupancy sensor trigger signal or not; if a seat occupancy sensor disposed on the driver seat outputs a seat occupancy sensor trigger signal, the seating identification module determines that a driver has seated on the driver seat.

Optionally, the seating recognition module determines whether the driver sits on the driving seat according to locking information of the vehicle, opening and closing information of the vehicle door and a seat occupancy sensor trigger signal of the driving seat, and may further include: if the vehicle locking state of the vehicle is the locking state, the seating recognition module determines that the driver does not sit on the driving seat; if the door opening and closing state of the vehicle is the door opening state, the seating recognition module determines that the driver does not sit on the driving seat; the seating identification module determines that the driver is not seated in the driver seat if the seat occupancy sensor disposed on the driver seat does not output the seat occupancy sensor trigger signal.

Alternatively, the seating recognition module may be a controller for determining whether the driver is seated on the driving seat. The controller is disposed inside the vehicle. And the controller judges whether the driver sits on the driving seat or not according to the locking information of the vehicle, the opening and closing information of the vehicle door and the seat occupancy sensor trigger signal of the driving seat. And if the controller determines that the driver sits on the driving seat, sending seating completion information to the human-computer interaction module.

The man-machine interaction module prompts a driver to adjust the position of the driving seat in a visual man-machine interaction mode and/or a sound man-machine interaction mode when the seating completion information is received, and inputs the adjustment completion information after the driving seat is determined to be adjusted to a proper seat position. The man-machine interaction module is arranged in the vehicle.

Optionally, the human-computer interaction module includes a touch display screen. When receiving the seating completion information, the touch display screen displays a prompt image and/or prompt characters to prompt a driver to adjust the position of the driving seat, and after determining that the driving seat is adjusted to a proper seat position, the touch display screen inputs the adjustment completion information. When the touch display screen obtains adjustment completion information input by a driver based on the touch display screen, the adjustment completion information of the seat position is sent to the seat position acquisition module and the eyepoint position acquisition module.

Optionally, the display duration of the prompt image and/or the prompt text is 5 s.

Illustratively, when the touch display screen receives the seating completion information, a prompt text "please adjust the position of the driving seat", double-click any position of the touch display screen after determining that the driving seat has been adjusted to a proper seat position "is displayed to prompt the driver to adjust the position of the driving seat, and after determining that the driving seat has been adjusted to a proper seat position, the adjustment completion information is input by" double-click any position of the touch display screen ". When the touch display screen obtains adjustment completion information input by a driver through double clicking any position of the touch display screen, the adjustment completion information of the seat position is sent to the seat position acquisition module and the eyepoint position acquisition module.

Optionally, the human-computer interaction module includes a voice interaction device. The voice interaction equipment is provided with a voice playing device and a microphone. When the voice interaction equipment receives the seating completion information, preset voice prompt data are played through the voice playing device to prompt a driver to adjust the position of the driving seat, and the adjustment completion information is input through voice after the driver determines that the driving seat is adjusted to a proper seat position. When the voice interaction equipment acquires the adjustment completion information input by the driver through voice through the microphone, the adjustment completion information of the seat position is sent to the seat position acquisition module and the eyepoint position acquisition module.

Optionally, the number of times of playing the preset voice prompt data through the voice playing device is 1.

Illustratively, when receiving the seating completion information, the voice interaction device plays preset voice prompt data "please adjust the position of the driving seat" through the voice playing device, and after determining that the driving seat has been adjusted to a proper seat position, the voice interaction device inputs 'adjusted' through voice to prompt the driver to adjust the position of the driving seat, and after determining that the driving seat has been adjusted to a proper seat position, the voice interaction device inputs adjustment completion information "adjusted" through voice. The voice interaction device sends seat position adjusting completion information to the seat position acquisition module and the eyepoint position acquisition module when acquiring adjusting completion information 'adjusting completion' input by a driver through voice through a microphone.

Optionally, if the human-computer interaction module does not acquire the adjustment completion information input by the driver all the time, it is determined that the driver does not complete correct sitting posture adjustment, and subsequent steps are not executed.

The seat position acquisition module acquires the initial position coordinates of the driving seat when receiving the seat position adjustment completion information sent by the man-machine interaction module, and sends the initial position coordinates of the driving seat to computer equipment for controlling an electric steering column on a vehicle. The initial position coordinates of the driving seat are the position coordinates of the driving seat acquired by the seat position acquisition module after the driver sits on the driving seat after getting on the vehicle and adjusts the driving seat to a proper seat position.

The eyepoint position acquisition module acquires the initial eyepoint position of the driver when receiving the seat position adjustment completion information sent by the man-machine interaction module, and sends the initial eyepoint position of the driver to the computer equipment for controlling the electric steering column on the vehicle. The initial eyepoint position of the driver is the eyepoint position of the driver, which is acquired by the eyepoint position acquisition module after the driver sits on the driving seat after getting on the vehicle and adjusts the driving seat to the proper seat position.

The eyepoint position collected by the eyepoint position collecting module is the coordinate of the midpoint of the connecting line of the pupils of the two eyes of the driver under the polar coordinate system. In this embodiment, the coordinates other than the eye point position are coordinates in the entire vehicle coordinate system, and in order to unify the coordinates, the eye point position needs to be converted into coordinates in the entire vehicle coordinate system.

In this embodiment, when the initial position coordinate of the driving seat and the initial eye point position of the driver are received, the initial eye point position is converted into a coordinate in a complete vehicle coordinate system, so as to obtain the initial position coordinate of the eye point position of the driver. The initial position coordinates of the eye point position of the driver are position coordinates of the eye point position of the driver in the whole vehicle coordinate system, which are acquired after the driver sits on the driver seat after getting on the vehicle and adjusts the driver seat to a proper seat position.

Optionally, converting the initial eyepoint position into a coordinate in a finished automobile coordinate system to obtain an initial position coordinate of the eyepoint position of the driver, including: and converting the initial eye point position into a coordinate under a whole vehicle coordinate system according to an absolute position reference point preset in the vehicle to obtain the initial position coordinate of the eye point position of the driver.

And 102, determining the target position coordinate of the electric steering column according to the initial position coordinate of the driving seat and the initial position coordinate of the eyepoint position of the driver.

The initial position coordinates of the driver seat and the initial position coordinates of the eye point position of the driver represent the initial sitting posture of the driver. The target position coordinates of the electric steering column are position coordinates of an optimum position of the electric steering column corresponding to the initial position coordinates of the driver's seat and the initial position coordinates of the eye point position of the driver, that is, position coordinates of an optimum position of the electric steering column corresponding to the initial sitting posture of the driver.

When the position coordinate of the electric steering column is the position coordinate of the optimal position of the electric steering column corresponding to the initial position coordinate of the driving seat and the initial position coordinate of the eyepoint position of the driver, namely when the electric steering column is positioned at the optimal position of the electric steering column corresponding to the initial sitting posture of the driver, the steering wheel arranged on the electric steering column is positioned at the appropriate position relative to the initial sitting posture of the driver, so that the driver in the initial sitting posture can be ensured to have enough leg space, the driver in the initial sitting posture can be ensured to comprehensively observe the information of the combination instrument through the steering wheel, and the operation requirement of the driver on the steering wheel and the requirement of observing the combination instrument through the steering wheel are met.

Optionally, the determining the target position coordinate of the electric steering column according to the initial position coordinate of the driving seat and the initial position coordinate of the eyepoint position of the driver includes: acquiring an electric steering column position coordinate corresponding to an initial position coordinate of the driving seat and an initial position coordinate of the eye point position of the driver from a preset position coordinate database as a target position coordinate of the electric steering column; the preset position coordinate database stores electric steering column position coordinates which correspond to the position coordinates of the driving seat and the position coordinates of the eyepoint position one by one.

The preset position coordinate database stores position coordinates of the electric steering columns, which correspond to the position coordinates of the driving seat and the position coordinates of the eyepoint position one by one. The position coordinates of the driver seat and the position coordinates of the eye point position of the driver represent the sitting posture of the driver. The technician sets an optimum position of one electric steering column in advance for position coordinates of different driver seats and position coordinates of eye positions according to a distance of a steering wheel from a driver, a vehicle space, and an instrument visual field, and sets the position coordinates of the optimum position of the electric steering column as electric steering column position coordinates corresponding to the position coordinates of the driver seats and the position coordinates of the eye positions.

Aiming at the position coordinates of different driving seats and the position coordinates of eyepoint positions, when the position coordinates of the electric steering column are the position coordinates of the electric steering column corresponding to the position coordinates of the driving seats and the position coordinates of the eyepoint positions, the electric steering column is in the optimal position corresponding to the sitting posture of the driver represented by the position coordinates of the driving seats and the position coordinates of the eyepoint positions of the driver, a steering wheel arranged on the electric steering column is in the proper position relative to the sitting posture of the driver, the driver in the sitting posture can have enough leg space, the driver in the sitting posture can be ensured to comprehensively observe the information of the combination instrument through the steering wheel, and the operation requirement of the driver on the steering wheel and the requirement of observing the combination instrument through the steering wheel are met.

And acquiring the position coordinates of the electric steering column corresponding to the initial position coordinates of the driving seat and the initial position coordinates of the eyepoint position of the driver from a preset position coordinate database as target position coordinates of the electric steering column. The target position coordinates of the electric steering column are position coordinates of an optimum position of the electric steering column corresponding to the initial position coordinates of the driver's seat and the initial position coordinates of the eye point position of the driver, that is, position coordinates of an optimum position of the electric steering column corresponding to the initial sitting posture of the driver. When the position coordinate of electronic steering column is the target position coordinate, when electronic steering column is in the best position of the electronic steering column that corresponds with driver's initial position of sitting promptly, the steering wheel of setting on electronic steering column is in the suitable position for driver's initial position of sitting, the driver that can guarantee to be in initial position of sitting has sufficient shank space, the driver that guarantees to be in initial position of sitting can see through the steering wheel and observe combination meter information comprehensively, satisfy the driver to the manipulation requirement of steering wheel and see through the demand that the combination meter was observed to the steering wheel.

And 103, determining the forward and backward moving direction, the forward and backward moving distance, the upward and downward moving direction and the upward and downward moving distance of the electric steering column according to the position relation between the target position coordinate and the current position coordinate of the electric steering column.

The current position coordinates of the electric steering column are the position coordinates of the electric steering column at the current time, i.e., the position coordinates of the electric steering column before adjustment. In general, the target position coordinates and the current position coordinates of the electric steering column are different, and it is necessary to move from the position represented by the current position coordinates to the position represented by the target position coordinates by adjusting the position coordinates of the electric steering column from the current position coordinates to the target position coordinates, that is, by controlling the electric steering column to move back and forth and/or up and down. The forward-backward moving direction is a forward-backward moving direction. The forward-backward movement distance is a distance of forward-backward movement. The up-down moving direction is a direction of up-down movement. The up-down movement distance is the distance of up-down movement.

Alternatively, if the target position coordinates and the current position coordinates of the electric steering column are the same, it may be directly determined that the adjustment of the electric steering column is completed, and the subsequent steps are not performed.

Optionally, the determining, according to the position relationship between the target position coordinate and the current position coordinate of the electric steering column, a forward-backward movement direction, a forward-backward movement distance, a vertical movement direction, and a vertical movement distance of the electric steering column includes: determining the forward-backward movement direction and the forward-backward movement distance of the electric steering column according to the forward-backward position relation between the target position coordinate and the current position coordinate of the electric steering column; and determining the up-down moving direction and the up-down moving distance of the electric steering column according to the up-down position relation between the target position coordinate and the current position coordinate of the electric steering column.

Illustratively, the front-rear positional relationship between the target position coordinates and the current position coordinates of the electric steering column is: the target position coordinate is behind the current position coordinate, and the distance between the target position coordinate and the current position coordinate in the front-back direction is 5 cm. The up-down position relation between the target position coordinate and the current position coordinate of the electric steering column is as follows: the target position coordinate is above the current position coordinate, and the distance between the target position coordinate and the current position coordinate in the up-down direction is 3 cm. And determining the forward-backward movement direction of the electric steering column to be the rear part and the forward-backward movement distance of the electric steering column to be 5 cm according to the forward-backward position relation between the target position coordinate and the current position coordinate of the electric steering column. And determining the up-down moving direction of the electric steering column as the upper part and the up-down moving distance of the electric steering column as 3 cm according to the up-down position relation between the target position coordinate and the current position coordinate of the electric steering column.

And 104, sending the front-back moving direction and the front-back moving distance to a first motor, sending the up-down moving direction and the up-down moving distance to a second motor, so that the first motor drives the electric steering column to move the front-back moving distance in the front-back moving direction, the second motor drives the electric steering column to move the up-down moving distance in the up-down moving direction, and the position coordinate of the electric steering column is adjusted to the target position coordinate from the current position coordinate.

Specifically, the forward-backward movement direction and the forward-backward movement distance are sent to a first motor, the up-down movement direction and the up-down movement distance are sent to a second motor, so that the first motor drives the electric steering column to move the forward-backward movement distance in the forward-backward movement direction, the second motor drives the electric steering column to move the up-down movement distance in the up-down movement direction, and the position coordinate of the electric steering column is adjusted to the target position coordinate from the current position coordinate.

Illustratively, the front-rear positional relationship between the target position coordinates and the current position coordinates of the electric steering column is: the target position coordinate is behind the current position coordinate, and the distance between the target position coordinate and the current position coordinate in the front-back direction is 5 cm. The up-down position relation between the target position coordinate and the current position coordinate of the electric steering column is as follows: the target position coordinate is above the current position coordinate, and the distance between the target position coordinate and the current position coordinate in the up-down direction is 3 cm. The forward-backward movement direction of the electric steering column is the rear, and the forward-backward movement distance of the electric steering column is 5 cm. The up-down moving direction of the electric steering column is upward, and the up-down moving distance of the electric steering column is 3 cm. And sending the forward-backward moving direction and the forward-backward moving distance to a first motor, sending the upward-downward moving direction and the upward-downward moving distance to a second motor, so that the first motor drives the electric steering column to move 5 cm backward, the second motor drives the electric steering column to move 3 cm upward, and the position coordinate of the electric steering column is adjusted to the target position coordinate from the current position coordinate.

The embodiment of the invention provides a control method of an electric steering column, which comprises the steps of converting an initial eye point position into a coordinate in a whole vehicle coordinate system when receiving an initial position coordinate of a driving seat and an initial eye point position of a driver, obtaining an initial position coordinate of the eye point position of the driver, determining a target position coordinate of the electric steering column according to the initial position coordinate of the driving seat and the initial position coordinate of the eye point position of the driver, determining a forward and backward movement direction, a forward and backward movement distance, a vertical movement direction and a vertical movement distance of the electric steering column according to a position relation between the target position coordinate of the electric steering column and a current position coordinate, sending the forward and backward movement direction and the forward and backward movement distance to a first motor, sending the vertical movement direction and the vertical movement distance to a second motor, so that the first motor drives the electric steering column to move forward and backward in the forward and backward movement direction, the second motor drives the electric steering column to move up and down for a distance in the up-and-down moving direction, the position coordinate of the electric steering column is adjusted to a target position coordinate from the current position coordinate, the position coordinate of the optimal position of the electric steering column corresponding to the initial sitting posture of the driver can be determined according to the initial position coordinate of the driving seat and the initial eye point position of the driver after the driver adjusts the driving seat to the proper seat position, the position coordinate of the optimal position of the electric steering column can be driven to move back and forth and/or up and down according to the position relation between the position coordinate of the optimal position of the electric steering column and the current position coordinate, the position coordinate of the electric steering column is adjusted to the position coordinate of the optimal position from the current position coordinate, and the aim that the driver adjusts the driving seat to the proper seat position is achieved, after the driver determines the initial sitting posture, the electric steering column is automatically controlled to move to the optimal position corresponding to the initial sitting posture of the driver according to the position coordinates of the current driving seat and the eyepoint position of the driver, so that the steering wheel mounted on the electric steering column is adjusted to the appropriate position relative to the driver in the initial sitting posture, the driver in the initial sitting posture is guaranteed to have enough leg space, the driver in the initial sitting posture is guaranteed to be capable of observing information of the combination instrument comprehensively through the steering wheel, and the control requirement of the driver on the steering wheel and the requirement of observing the combination instrument through the steering wheel are met.

Example two

Fig. 2 is a flowchart of a control method of an electric steering column according to a second embodiment of the present invention. Embodiments of the invention may be combined with various alternatives in one or more of the embodiments described above.

As shown in fig. 2, the method of the embodiment of the present invention specifically includes:

step 201, when receiving an initial position coordinate of a driving seat and an initial eyepoint position of a driver, converting the initial eyepoint position into a coordinate under a whole vehicle coordinate system to obtain the initial position coordinate of the eyepoint position of the driver.

Step 202, determining the target position coordinate of the electric steering column according to the initial position coordinate of the driving seat and the initial position coordinate of the eyepoint position of the driver.

And 203, determining the front-back movement direction, the front-back movement distance, the up-down movement direction and the up-down movement distance of the electric steering column according to the position relation between the target position coordinate and the current position coordinate of the electric steering column.

And 204, sending the forward and backward moving direction and the forward and backward moving distance to a first motor, sending the upward and downward moving direction and the upward and downward moving distance to a second motor, so that the first motor drives the electric steering column to move the forward and backward moving distance in the forward and backward moving direction, the second motor drives the electric steering column to move the upward and downward moving distance in the upward and downward moving direction, and the position coordinate of the electric steering column is adjusted to the target position coordinate from the current position coordinate.

And step 205, when the vehicle is detected to be in the parking state, regularly acquiring the position coordinates of the driving seat and the eye point position of the driver according to a preset time interval, and converting the eye point position into coordinates in a whole vehicle coordinate system to obtain the position coordinates of the eye point position.

The parking state is the parking state. When the driver stops the running of the vehicle, the vehicle is in a parked state. The preset time interval can be set according to the service requirement. Illustratively, the time interval may be 1 second.

Optionally, when it is detected that the vehicle is in the parking state, the position coordinate of the driving seat and the eye point position of the driver are obtained at regular time according to a preset time interval, and the eye point position is converted into a coordinate under a coordinate system of the whole vehicle, so as to obtain the position coordinate of the eye point position, including: when the vehicle is detected to be in a parking state, the seat position acquisition module is controlled to acquire the position coordinates of the driving seat at regular time according to a preset time interval, the eye point position acquisition module is controlled to acquire the eye point position of the driver at regular time according to the preset time interval, and the position coordinates of the driving seat at each moment acquired by the seat position acquisition module and the eye point position of the driver at each moment acquired by the eye point position acquisition module are acquired; and converting the eye point positions of the driver at all the moments acquired by the eye point position acquisition module into coordinates in a whole vehicle coordinate system to obtain the position coordinates of the eye point positions of the driver at all the moments acquired by the eye point position acquisition module.

And step 206, judging whether the position coordinates of the driving seat and the eye point position of the driver at each moment meet the preset sitting posture change condition.

In this embodiment, when the position coordinate of the driving seat and the position coordinate of the eyepoint position of the driver at a certain moment satisfy the preset sitting posture change condition, it indicates that the sitting posture of the driver has changed. When the position coordinates of the driving seat and the eye point position of the driver at each moment do not meet the preset sitting posture change condition, the sitting posture of the driver is not changed all the time, and the initial sitting posture is kept.

Optionally, the determining whether the position coordinate of the driving seat at each moment and the position coordinate of the eyepoint position of the driver meet the preset sitting posture change condition may include: judging whether the distance between the position coordinate of the driving seat at the current processing moment and the position coordinate of the driving seat at the previous moment is greater than or equal to a first preset distance threshold value or not; if the distance between the position coordinate of the driving seat at the current processing moment and the position coordinate of the driving seat at the previous moment is larger than or equal to a first preset distance threshold value, judging whether the distance between the position coordinate of the eye point position of the driver at the current processing moment and the position coordinate of the eye point position of the driver at the previous moment is larger than or equal to a second preset distance threshold value or not; if the distance between the position coordinate of the eye point position of the driver at the current processing moment and the position coordinate of the eye point position of the driver at the previous moment is larger than or equal to a second preset distance threshold value, judging whether the position coordinate of the driving seat and the position coordinate of the eye point position of the driver are kept unchanged within a preset time length after the current processing moment; and if the position coordinates of the driving seat and the eye point position of the driver are kept unchanged within the preset time length after the current processing time, determining that the position coordinates of the driving seat and the eye point position of the driver at the current processing time meet the preset sitting posture change condition.

The first preset distance threshold and the second preset distance threshold may be the same distance threshold or different distance thresholds. Optionally, the first preset distance threshold and the second preset distance threshold are set according to the service requirement. Illustratively, the first predetermined distance threshold is 3 centimeters and the second predetermined distance threshold is 2 centimeters.

Optionally, the preset duration is set according to the service requirement. Illustratively, the preset time period is 15 seconds.

Optionally, the determining whether the position coordinate of the driving seat at each moment and the position coordinate of the eyepoint position of the driver meet a preset sitting posture change condition further includes: if the distance between the position coordinate of the driving seat at the current processing moment and the position coordinate of the driving seat at the previous moment is smaller than a first preset distance threshold value, determining that the position coordinate of the driving seat at the current processing moment and the position coordinate of the eyepoint position of the driver do not meet a preset sitting posture change condition; if the distance between the position coordinate of the eye point position of the driver at the current processing moment and the position coordinate of the eye point position of the driver at the previous moment is smaller than a second preset distance threshold value, determining that the position coordinate of the driving seat at the current processing moment and the position coordinate of the eye point position of the driver do not meet a preset sitting posture change condition; and if the position coordinates of the driving seat and the eye point position of the driver are not kept unchanged within the preset time length after the current processing time, determining that the position coordinates of the driving seat and the eye point position of the driver at the current processing time do not meet the preset sitting posture change condition.

And step 207, when the position coordinates of the driving seat at the target moment and the position coordinates of the eyepoint position of the driver meet the preset sitting posture change condition, determining the updated target position coordinates of the electric steering column according to the position coordinates of the driving seat at the target moment and the position coordinates of the eyepoint position of the driver.

The target time is a certain time in the process that the vehicle is in the parking state. When the position coordinates of the driving seat and the eye position of the driver at the target moment are detected to meet the preset sitting posture change condition, the sitting posture of the driver is changed, the target position coordinates of the electric steering column need to be determined again according to the position coordinates of the driving seat and the eye position of the driver after the sitting posture change, and then the position coordinates of the electric steering column are adjusted from the target position coordinates to the re-determined target position coordinates, so that the steering wheel mounted on the electric steering column is adjusted to a proper position relative to the changed sitting posture of the driver. The updated target position coordinates of the electric steering column are target position coordinates of the electric steering column that are newly determined after the sitting posture of the driver has changed.

Optionally, determining an updated target position coordinate of the electric steering column according to the position coordinate of the driving seat at the target time and the position coordinate of the eyepoint position of the driver, includes: and acquiring the position coordinates of the electric steering column corresponding to the position coordinates of the driving seat and the eye point position of the driver at the target moment from a preset position coordinate database to serve as the updated target position coordinates of the electric steering column.

And 208, determining the updating front-back movement direction, the updating front-back movement distance, the updating up-down movement direction and the updating up-down movement distance of the electric steering column according to the position relation between the updating target position coordinate and the target position coordinate of the electric steering column.

In general, the updated target position coordinates and the target position coordinates of the electric steering column are different, and it is necessary to move from the position represented by the target position coordinates to the position represented by the updated target position coordinates by adjusting the position coordinates of the electric steering column from the target position coordinates to the updated target position coordinates, that is, by controlling the electric steering column to move back and forth and/or up and down. Updating the forward-backward movement direction is the re-determined forward-backward movement direction. The updated forward-backward movement distance is the re-determined forward-backward movement distance. Updating the up-down movement direction is the re-determined up-down movement direction. The updated up-down movement distance is the re-determined up-down movement distance.

Optionally, determining an updated forward-backward movement direction and an updated forward-backward movement distance of the electric steering column according to a forward-backward position relationship between the updated target position coordinate and the target position coordinate of the electric steering column; and determining the updated up-down moving direction and the updated up-down moving distance of the electric steering column according to the up-down position relation between the updated target position coordinate and the target position coordinate of the electric steering column.

Step 209, sending the updated forward-backward moving direction and the updated forward-backward moving distance to the first motor, and sending the updated upward-downward moving direction and the updated upward-downward moving distance to the second motor, so that the first motor drives the electric steering column to move the updated forward-backward moving distance in the updated forward-backward moving direction, and the second motor drives the electric steering column to move the updated upward-downward moving distance in the updated upward-downward moving direction, and the position coordinate of the electric steering column is adjusted from the target position coordinate to the updated target position coordinate.

Wherein, drive electronic steering column through first motor and second motor and carry out back-and-forth movement and/or reciprocate, adjust the position coordinate of electronic steering column to the target location coordinate of redetermining from the target location coordinate, thereby will install the steering wheel on electronic steering column and adjust to the suitable position for the position of sitting after the change of driver, the driver of the position of sitting after guaranteeing to be in the change has sufficient shank space, the driver of the position of sitting after guaranteeing to be in the change can see through the steering wheel and observe combination instrument information comprehensively, satisfy the manipulation requirement of driver to the steering wheel and see through the demand that the steering wheel observes combination instrument.

Illustratively, the front-to-back positional relationship between the updated target position coordinates and the target position coordinates of the electric steering column is: the updated target position coordinates are in front of the target position coordinates, and the distance between the updated target position coordinates and the target position coordinates in the front-rear direction is 6 cm. The up-down position relation between the updated target position coordinates and the target position coordinates of the electric steering column is as follows: the updated target position coordinate is below the target position coordinate, and the distance between the updated target position coordinate and the target position coordinate in the up-down direction is 2 cm. The updated forward-backward movement direction of the electric steering column is the front, and the updated forward-backward movement distance of the electric steering column is 6 cm. The updated up-down moving direction of the electric steering column is the lower part, and the updated up-down moving distance of the electric steering column is 2 cm. And sending the updated forward-backward moving direction and the updated forward-backward moving distance to a first motor, and sending the updated upward-downward moving direction and the updated upward-downward moving distance to a second motor, so that the first motor drives the electric steering column to move forward by 6 centimeters, the second motor drives the electric steering column to move downward by 2 centimeters, and the position coordinate of the electric steering column is adjusted from the target position coordinate to the updated target position coordinate.

The embodiment of the invention provides a control method of an electric steering column, which comprises the steps of obtaining position coordinates of a driving seat and eye positions of a driver at regular time according to a preset time interval when a vehicle is detected to be in a parking state, converting the eye positions into coordinates in a whole vehicle coordinate system to obtain the position coordinates of the eye positions, judging whether the position coordinates of the driving seat and the eye positions of the driver at each moment meet a preset sitting posture change condition, determining updated target position coordinates of the electric steering column according to the position coordinates of the driving seat and the eye positions of the driver at a target moment when the position coordinates of the driving seat and the eye positions of the driver at the target moment are detected to meet the preset sitting posture change condition, determining the updated target position coordinates of the electric steering column according to the position coordinates of the driving seat and the eye positions of the driver at the target moment, determining a position relation between the updated target position coordinates of the electric steering column and the target position coordinates, determining an updated forward-backward movement direction, an updated forward-backward movement distance, an updated upward-downward movement direction and an updated upward-downward movement distance of the electric steering column, sending the updated forward-backward movement direction and the updated forward-backward movement distance to a first motor, sending the updated upward-downward movement direction and the updated upward-downward movement distance to a second motor, so that the first motor drives the electric steering column to move towards the updated forward-backward movement direction and the updated forward-backward movement distance, the second motor drives the electric steering column to move towards the updated upward-downward movement direction and the updated upward-downward movement distance, and adjusting the position coordinate of the electric steering column from the target position coordinate to the updated target position coordinate, so that when the driver does not keep the initial sitting posture any more and the sitting posture of the driver is changed, the electric steering column is automatically controlled to move to the optimal position corresponding to the changed sitting posture of the driver according to the current position coordinate of the driver seat and the eye position of the driver, thereby will install the steering wheel on electronic steering column and adjust to the suitable position for being in the driver of the position of sitting after the change, guarantee that the driver in the position of sitting after the change has sufficient shank space, guarantee that the driver in the position of sitting after the change can see through the steering wheel and observe combination meter information comprehensively, satisfy the driver to the manipulation requirement of steering wheel and see through the demand that the combination meter was observed to the steering wheel.

EXAMPLE III

Fig. 3 is a schematic structural diagram of a control device of an electric steering column according to a third embodiment of the present invention. As shown in fig. 3, the apparatus includes: a position coordinate acquisition module 301, a position coordinate determination module 302, a movement information determination module 303, and a position coordinate adjustment module 304.

The position coordinate acquisition module 301 is configured to convert an initial eye point position into a coordinate in a finished automobile coordinate system when receiving an initial position coordinate of a driving seat and the initial eye point position of a driver, and obtain an initial position coordinate of the eye point position of the driver; the initial position coordinate of the driving seat is the position coordinate of the driving seat acquired by the seat position acquisition module when the seat position adjustment completion information is received, and the initial eye point position of the driver is the eye point position of the driver acquired by the eye point position acquisition module when the seat position adjustment completion information is received; a position coordinate determination module 302, configured to determine a target position coordinate of the electric steering column according to an initial position coordinate of the driving seat and an initial position coordinate of the eye point position of the driver; a movement information determination module 303, configured to determine a forward-backward movement direction, a forward-backward movement distance, a upward-downward movement direction, and an upward-downward movement distance of the electric steering column according to a position relationship between a target position coordinate and a current position coordinate of the electric steering column; a position coordinate adjusting module 304, configured to send the forward-backward moving direction and the forward-backward moving distance to a first motor, and send the upward-downward moving direction and the upward-downward moving distance to a second motor, so that the first motor drives the electric steering column to move the forward-backward moving distance in the forward-backward moving direction, and the second motor drives the electric steering column to move the upward-downward moving distance in the upward-downward moving direction, so as to adjust a position coordinate of the electric steering column from the current position coordinate to the target position coordinate; the steering wheel of the vehicle is mounted on the electric steering column, the first motor and the second motor are respectively connected with the electric steering column, the first motor is used for driving the electric steering column to move back and forth, and the second motor is used for driving the electric steering column to move up and down.

The embodiment of the invention provides a control device of an electric steering column, which is characterized in that when an initial position coordinate of a driving seat and an initial eye point position of a driver are received, the initial eye point position is converted into a coordinate in a whole vehicle coordinate system to obtain an initial position coordinate of the eye point position of the driver, then a target position coordinate of the electric steering column is determined according to the initial position coordinate of the driving seat and the initial position coordinate of the eye point position of the driver, a front-back movement direction, a front-back movement distance, a front-back movement direction and a front-up movement distance of the electric steering column are determined according to a position relation between the target position coordinate of the electric steering column and a current position coordinate, finally the front-back movement direction and the front-back movement distance are sent to a first motor, the front-up movement direction and the front-down movement distance are sent to a second motor, so that the first motor drives the electric steering column to move the front-back movement distance towards the front-back movement direction, the second motor drives the electric steering column to move up and down for a distance in the up-and-down moving direction, the position coordinate of the electric steering column is adjusted to a target position coordinate from the current position coordinate, the position coordinate of the optimal position of the electric steering column corresponding to the initial sitting posture of the driver can be determined according to the initial position coordinate of the driving seat and the initial eye point position of the driver after the driver adjusts the driving seat to the proper seat position, the position coordinate of the optimal position of the electric steering column can be driven to move back and forth and/or up and down according to the position relation between the position coordinate of the optimal position of the electric steering column and the current position coordinate, the position coordinate of the electric steering column is adjusted to the position coordinate of the optimal position from the current position coordinate, and the aim that the driver adjusts the driving seat to the proper seat position is achieved, after the driver determines the initial sitting posture, the electric steering column is automatically controlled to move to the optimal position corresponding to the initial sitting posture of the driver according to the position coordinates of the current driving seat and the eyepoint position of the driver, so that the steering wheel mounted on the electric steering column is adjusted to the appropriate position relative to the driver in the initial sitting posture, the driver in the initial sitting posture is guaranteed to have enough leg space, the driver in the initial sitting posture is guaranteed to be capable of observing information of the combination instrument comprehensively through the steering wheel, and the control requirement of the driver on the steering wheel and the requirement of observing the combination instrument through the steering wheel are met.

In an optional implementation manner of the embodiment of the present invention, the position coordinate determination module 302 may optionally include: a position coordinate acquiring unit configured to acquire, from a preset position coordinate database, an electric steering column position coordinate corresponding to an initial position coordinate of the driver seat and an initial position coordinate of the eye point position of the driver as a target position coordinate of the electric steering column; the preset position coordinate database stores electric steering column position coordinates which correspond to the position coordinates of the driving seat and the position coordinates of the eyepoint position one by one.

In an optional implementation manner of the embodiment of the present invention, optionally, the movement information determining module 303 may include: the forward-backward movement information determining unit is used for determining the forward-backward movement direction and the forward-backward movement distance of the electric steering column according to the forward-backward position relation between the target position coordinate and the current position coordinate of the electric steering column; and the up-down movement information determining unit is used for determining the up-down movement direction and the up-down movement distance of the electric steering column according to the up-down position relation between the target position coordinate and the current position coordinate of the electric steering column.

In an optional implementation manner of the embodiment of the present invention, the control device of the electric steering column further includes: the position coordinate timing acquisition module is used for acquiring the position coordinate of the driving seat and the eye point position of the driver at regular time according to a preset time interval when the vehicle is detected to be in a parking state, and converting the eye point position into a coordinate under a whole vehicle coordinate system to obtain the position coordinate of the eye point position; the sitting posture change condition judgment module is used for judging whether the position coordinates of the driving seat and the eye point position of the driver at each moment meet a preset sitting posture change condition or not; the position coordinate updating module is used for determining an updated target position coordinate of the electric steering column according to the position coordinate of the driving seat at the target moment and the position coordinate of the eyepoint position of the driver when the position coordinate of the driving seat at the target moment and the position coordinate of the eyepoint position of the driver are detected to meet a preset sitting posture change condition; the mobile information updating module is used for determining the updating front-back movement direction, the updating front-back movement distance, the updating up-down movement direction and the updating up-down movement distance of the electric steering column according to the position relation between the updating target position coordinate and the target position coordinate of the electric steering column; and the updating position coordinate adjusting module is used for sending the updating front-and-back moving direction and the updating front-and-back moving distance to the first motor and sending the updating front-and-back moving direction and the updating up-and-down moving distance to the second motor, so that the first motor drives the electric steering column to move the updating front-and-back moving distance to the updating front-and-back moving direction, the second motor drives the electric steering column to move the updating up-and-down moving distance to the updating up-and-down moving direction, and the position coordinate of the electric steering column is adjusted from the target position coordinate to the updating target position coordinate.

In an optional implementation manner of the embodiment of the present invention, optionally, the sitting posture change condition determining module may include: the first judgment unit is used for judging whether the distance between the position coordinate of the driving seat at the current processing moment and the position coordinate of the driving seat at the previous processing moment is larger than or equal to a first preset distance threshold value or not; a second determination unit, configured to determine whether a distance between the position coordinate of the eye point position of the driver at the current processing time and the position coordinate of the eye point position of the driver at the previous time is greater than or equal to a second preset distance threshold, if the distance between the position coordinate of the driving seat at the current processing time and the position coordinate of the driving seat at the previous time is greater than or equal to the first preset distance threshold; a third judging unit, configured to judge whether the position coordinate of the driving seat and the position coordinate of the eye point position of the driver remain unchanged for a preset time period after the current processing time if a distance between the position coordinate of the eye point position of the driver at the current processing time and the position coordinate of the eye point position of the driver at the previous time is greater than or equal to a second preset distance threshold; a first determination unit configured to determine that the position coordinate of the driver's seat and the position coordinate of the driver's eyepoint position at the current processing time satisfy a preset sitting posture change condition if the position coordinate of the driver's seat and the position coordinate of the driver's eyepoint position remain unchanged for a preset time period after the current processing time.

In an optional implementation manner of the embodiment of the present invention, optionally, the sitting posture change condition determining module may further include: the second determining unit is used for determining that the position coordinate of the driving seat at the current processing moment and the position coordinate of the eyepoint position of the driver do not meet the preset sitting posture change condition if the distance between the position coordinate of the driving seat at the current processing moment and the position coordinate of the driving seat at the previous moment is smaller than a first preset distance threshold; a third determining unit, configured to determine that the position coordinate of the driving seat at the current processing time and the position coordinate of the eye point position of the driver do not satisfy the preset sitting posture change condition if a distance between the position coordinate of the eye point position of the driver at the current processing time and the position coordinate of the eye point position of the driver at the previous time is smaller than a second preset distance threshold; a fourth determination unit configured to determine that the position coordinate of the driver's seat and the position coordinate of the driver's eyepoint position at the current processing time do not satisfy the preset sitting posture change condition if the position coordinate of the driver's seat and the position coordinate of the driver's eyepoint position do not remain unchanged for the preset time period after the current processing time.

With regard to the apparatus in the above-described embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment related to the method, and will not be elaborated here.

The control device of the electric steering column can execute the control method of the electric steering column provided by any embodiment of the invention, and has the corresponding functional modules and beneficial effects of executing the control method of the electric steering column.

Example four

Fig. 4 is a schematic structural diagram of a control system of an electric steering column according to a fourth embodiment of the present invention. The embodiment of the invention can be suitable for controlling the electric steering column on the vehicle, controlling the electric steering column to drive the steering wheel to move, and adjusting the steering wheel to a proper position relative to a driver. As shown in fig. 4, the system specifically includes: the seating recognition module 401, the human-computer interaction module 402, the seat position acquisition module 403, the eyepoint position acquisition module 404, the control module 405, the first motor 406, the second motor 407, and the electric steering column 408, and the structure and function thereof will be described below.

The steering wheel of the vehicle is mounted on the electric steering column 408, the first motor 406 and the second motor 407 are respectively connected to the electric steering column 408, the first motor 406 is configured to drive the electric steering column 408 to move back and forth, and the second motor 407 is configured to drive the electric steering column 408 to move up and down.

The seating recognition module 401 is configured to determine whether a driver sits on a driving seat according to the locking information of the vehicle, the opening and closing information of the vehicle door, and a seat occupancy sensor trigger signal of the driving seat; if it is determined that the driver is seated in the driver seat, seating completion information is transmitted to the human-machine interaction module 402.

The human-computer interaction module 402 is configured to prompt the driver to adjust the position of the driving seat when the seating completion information is received, and input adjustment completion information after determining that the driving seat has been adjusted to a suitable seat position; when the adjustment completion information input by the driver is acquired, the adjustment completion information of the seat position is sent to the seat position acquisition module 403 and the eyepoint position acquisition module 404.

The seat position acquisition module 403 is configured to acquire an initial position coordinate of the driving seat when receiving the seat position adjustment completion information, and send the initial position coordinate of the driving seat to the control module 405.

The eyepoint position collecting module 404 is configured to collect an initial eyepoint position of the driver when the seat position adjustment completion information is received, and send the initial eyepoint position of the driver to the control module 405.

The control module 405 is configured to convert the initial eye point position into a coordinate in a finished vehicle coordinate system when receiving the initial position coordinate of the driving seat and the initial eye point position of the driver, so as to obtain an initial position coordinate of the eye point position of the driver; determining target position coordinates of the electric steering column 408 according to the initial position coordinates of the driver seat and the initial position coordinates of the eye point position of the driver; determining the forward and backward moving direction, forward and backward moving distance, upward and downward moving direction and upward and downward moving distance of the electric steering column 408 according to the position relationship between the target position coordinate and the current position coordinate of the electric steering column 408; the forward-backward moving direction and the forward-backward moving distance are sent to the first motor 406, and the upward-downward moving direction and the upward-downward moving distance are sent to the second motor 407, so that the first motor 406 drives the electric steering column 408 to move the forward-backward moving distance in the forward-backward moving direction, the second motor 407 drives the electric steering column 408 to move the upward-downward moving distance in the upward-downward moving direction, and the position coordinate of the electric steering column 408 is adjusted from the current position coordinate to the target position coordinate.

The seating recognition module 401 is a module for determining whether the driver is seated in the driver seat. The seating completion information is information indicating that the driver has been seated on the driver seat. The locking information of the vehicle may include a vehicle locking state of the vehicle. The vehicle locked state of the vehicle may be an locked state or an unlocked state. The vehicle is normally locked when the driver leaves the vehicle, and the vehicle lock state of the vehicle is the locked state. When a driver gets on the vehicle, the vehicle is unlocked, and the vehicle locking state of the vehicle is the unlocking state. The door opening and closing information may include a door opening and closing state. The door opening and closing state may be a door opening state or a door closing state. A seat occupancy sensor is disposed on the driver seat. The seat occupancy sensor is used to detect whether a person is in the driving seat. When the seat occupancy sensor detects that a person is in the driving seat, a trigger signal is output. The trigger signal is the seat occupancy sensor trigger signal.

When a driver sits on a driving seat, the vehicle locking state of the vehicle is the unlocking state, the vehicle door opening and closing state of the vehicle is the vehicle door closing state, the seat occupancy sensor detects that people are on the driving seat, and a seat occupancy sensor trigger signal is output. Therefore, the seating recognition module 401 determines that the vehicle locking state of the vehicle is the unlocking state according to the locking information of the vehicle, the door opening and closing information of the vehicle and the seat occupancy sensor trigger signal of the driving seat, determines that the door opening and closing state of the vehicle is the door closing state, and determines that the driver has seated on the driving seat when the seat occupancy sensor arranged on the driving seat outputs the seat occupancy sensor trigger signal, namely, the driver has normally seated, and then sends the seating completion information to the human-computer interaction module.

Optionally, the seating recognition module 401 determines whether the driver sits on the driving seat according to the locking information of the vehicle, the opening and closing information of the vehicle door, and the seat occupancy sensor trigger signal of the driving seat, and may include: the seating recognition module 401 determines whether the vehicle locking state of the vehicle is an unlocking state according to the locking information of the vehicle; if the vehicle locking state of the vehicle is the unlocking state, the seating recognition module 401 determines whether the door opening and closing state of the vehicle is the door closing state according to the door opening and closing information; if the door opening and closing state of the vehicle is the door closing state, the seating recognition module 401 determines whether a seat occupancy sensor arranged on the driving seat outputs a seat occupancy sensor trigger signal; if the seat occupancy sensor disposed on the driver seat outputs a seat occupancy sensor trigger signal, seating identification module 401 determines that the driver is seated on the driver seat.

Optionally, the seating recognition module 401 determines whether the driver sits on the driving seat according to the locking information of the vehicle, the opening and closing information of the vehicle door, and the seat occupancy sensor trigger signal of the driving seat, and may further include: if the vehicle lock state of the vehicle is the locked state, the seating recognition module 401 determines that the driver is not seated in the driving seat; if the door opening and closing state of the vehicle is the door opening state, the seating recognition module 401 determines that the driver is not seated in the driving seat; if the seat occupancy sensor disposed on the driver seat does not output a seat occupancy sensor trigger signal, seating identification module 401 determines that the driver is not seated on the driver seat.

Alternatively, the seating recognition module 401 may be a controller for determining whether the driver is seated in the driving seat. The controller is disposed inside the vehicle. And the controller judges whether the driver sits on the driving seat or not according to the locking information of the vehicle, the opening and closing information of the vehicle door and the seat occupancy sensor trigger signal of the driving seat. If the controller determines that the driver is seated in the driver seat, seating completion information is sent to the human-machine interaction module 402.

The human-computer interaction module 402 is a module that prompts a driver to adjust the position of the driving seat in a visual human-computer interaction mode and/or a voice human-computer interaction mode when seating completion information is received, and inputs adjustment completion information after determining that the driving seat has been adjusted to a proper seat position. Human-machine interaction module 402 is disposed inside the vehicle.

Optionally, the human-computer interaction module 402 includes a touch display screen. When receiving the seating completion information, the touch display screen displays a prompt image and/or prompt characters to prompt a driver to adjust the position of the driving seat, and after determining that the driving seat is adjusted to a proper seat position, the touch display screen inputs the adjustment completion information. When acquiring adjustment completion information input by a driver based on the touch display screen, the touch display screen sends the adjustment completion information of the seat position to the seat position acquisition module 403 and the eyepoint position acquisition module 404.

Illustratively, when the touch display screen receives the seating completion information, a prompt text "please adjust the position of the driving seat", double-click any position of the touch display screen after determining that the driving seat has been adjusted to a proper seat position "is displayed to prompt the driver to adjust the position of the driving seat, and after determining that the driving seat has been adjusted to a proper seat position, the adjustment completion information is input by" double-click any position of the touch display screen ". When acquiring adjustment completion information input by a driver through double-click on any position of the touch display screen, the touch display screen sends the adjustment completion information of the seat position to the seat position acquisition module 403 and the eyepoint position acquisition module 404.

Optionally, the human-computer interaction module 402 includes a voice interaction device. The voice interaction equipment is provided with a voice playing device and a microphone. When the voice interaction equipment receives the seating completion information, preset voice prompt data are played through the voice playing device to prompt a driver to adjust the position of the driving seat, and the adjustment completion information is input through voice after the driver determines that the driving seat is adjusted to a proper seat position. When the voice interaction device acquires the adjustment completion information input by the driver through voice through a microphone, the voice interaction device sends the adjustment completion information of the seat position to the seat position acquisition module 403 and the eyepoint position acquisition module 404.

Illustratively, when receiving the seating completion information, the voice interaction device plays preset voice prompt data "please adjust the position of the driving seat" through the voice playing device, and after determining that the driving seat has been adjusted to a proper seat position, the voice interaction device inputs 'adjusted' through voice to prompt the driver to adjust the position of the driving seat, and after determining that the driving seat has been adjusted to a proper seat position, the voice interaction device inputs adjustment completion information "adjusted" through voice. When the voice interaction device acquires the adjustment completion information "adjustment completed" input by the driver through voice through the microphone, the voice interaction device sends the adjustment completion information of the seat position to the seat position acquisition module 403 and the eyepoint position acquisition module 404.

Optionally, if the human-computer interaction module 402 does not acquire the adjustment completion information input by the driver all the time, it is determined that the driver does not complete the correct sitting posture adjustment, and the subsequent steps are not executed.

The driver seat is a seat provided to a driver in the vehicle. A driver sits on a driving seat and drives a vehicle by operating a steering wheel and the like. The position coordinates are coordinates in the entire vehicle coordinate system of the vehicle. The position coordinates of the driver seat are coordinates of the driver seat in the entire vehicle coordinate system of the vehicle. The seat position acquisition module 403 is a module for acquiring position coordinates of the driving seat. Optionally, the seat position acquisition module 403 includes a position sensor mounted on a designated position of the driving seat. When the seat position adjustment completion information is received, the position sensor collects the position coordinates of the driving seat, determines the collected position coordinates as the initial position coordinates of the driving seat, and sends the initial position coordinates to the control module 405.

The eyepoint position may be a central point position of pupils of both eyes of the driver. The eyepoint position acquisition module 404 is a module for acquiring the eyepoint position of the driver. Optionally, the eyepoint position collecting module 404 includes cameras installed at designated positions at both ends of the vehicle. When the seat position adjustment completion information is received, the cameras installed at the designated positions at both ends of the vehicle collect the eye point positions of the driver, determine the collected eye point positions as the initial eye point positions of the driver, and send the initial eye point positions to the control module 405.

The seat position collection module 403 collects the initial position coordinates of the driver seat when receiving the seat position adjustment completion information, and sends the initial position coordinates of the driver seat to the control module 405. The initial position coordinates of the driver seat are the position coordinates of the driver seat acquired by the seat position acquisition module 403 after the driver sits on the driver seat after getting on the vehicle and adjusts the driver seat to a proper seat position, that is, the position coordinates of the driver seat acquired after the driver determines the initial sitting posture. The eyepoint position collection module 404 collects an initial eyepoint position of the driver when receiving the seat position adjustment completion information, and sends the initial eyepoint position of the driver to the control module 405. The initial eyepoint position of the driver is the eyepoint position of the driver that is collected by the eyepoint position collection module 404 after the driver sits on the driver seat after boarding the vehicle and adjusts the driver seat to the proper seat position, i.e., the eyepoint position of the driver that is collected after the driver determines the initial sitting position.

Optionally, the control module 405 is a module for controlling an electric steering column on a vehicle, and may be a computer device for controlling the electric steering column on the vehicle. By way of example, the computer device may be a controller inside the vehicle, or may be a server, a cloud platform, a computer, a mobile phone, a tablet, and the like with communication, computing, and storage functions, without limitation. The control module 405 may perform the method for controlling the electric steering column according to any embodiment of the present invention, and has functional blocks and advantageous effects corresponding to the method for controlling the electric steering column.

The eyepoint position collected by the eyepoint position collecting module 404 is the coordinate of the midpoint of the connecting line of the pupils of both eyes of the driver under the polar coordinate system. In this embodiment, the coordinates other than the eye point position are coordinates in the entire vehicle coordinate system, and in order to unify the coordinates, the eye point position needs to be converted into coordinates in the entire vehicle coordinate system.

In this embodiment, when receiving the initial position coordinates of the driving seat and the initial eye point position of the driver, the control module 405 converts the initial eye point position into coordinates in the entire vehicle coordinate system to obtain the initial position coordinates of the eye point position of the driver. The initial position coordinates of the eye point position of the driver are position coordinates of the eye point position of the driver in the whole vehicle coordinate system, which are acquired after the driver sits on the driver seat after getting on the vehicle and adjusts the driver seat to a proper seat position.

Optionally, the control module 405 converts the initial eyepoint position into a coordinate in a finished vehicle coordinate system, to obtain an initial position coordinate of the eyepoint position of the driver, including: the control module 405 converts the initial eyepoint position into coordinates in the entire vehicle coordinate system according to an absolute position reference point preset inside the vehicle, and obtains the initial position coordinates of the driver's eyepoint position.

Optionally, the control module 405 determines the target position coordinates of the electric steering column 408 according to the initial position coordinates of the driving seat and the initial position coordinates of the eye point position of the driver, including: the control module 405 acquires, from a preset position coordinate database, an electric steering column position coordinate corresponding to the initial position coordinate of the driver seat and the initial position coordinate of the eye point position of the driver as a target position coordinate of the electric steering column 408; the preset position coordinate database stores electric steering column position coordinates which correspond to the position coordinates of the driving seat and the position coordinates of the eyepoint position one by one.

Optionally, the control module 405 determines the forward and backward moving direction, the forward and backward moving distance, the upward and downward moving direction, and the upward and downward moving distance of the electric steering column 408 according to the position relationship between the target position coordinate and the current position coordinate of the electric steering column 408, including: the control module 405 determines the forward and backward movement direction and the forward and backward movement distance of the electric steering column 408 according to the forward and backward position relationship between the target position coordinate and the current position coordinate of the electric steering column 408; the control module 405 determines the up-down movement direction and the up-down movement distance of the electric steering column 408 according to the up-down positional relationship between the target position coordinates and the current position coordinates of the electric steering column 408.

Optionally, when detecting that the vehicle is in the parking state, the control module 405 regularly acquires the position coordinates of the driving seat and the eye point position of the driver according to a preset time interval, and converts the eye point position into coordinates in a whole vehicle coordinate system to obtain the position coordinates of the eye point position; the control module 405 determines whether the position coordinates of the driving seat and the eye point position of the driver at each moment meet a preset sitting posture change condition; when detecting that the position coordinates of the driving seat at the target moment and the position coordinates of the eyepoint position of the driver meet the preset sitting posture change condition, the control module 405 determines the updated target position coordinates of the electric steering column 408 according to the position coordinates of the driving seat at the target moment and the position coordinates of the eyepoint position of the driver; the control module 405 determines an updated forward-backward movement direction, an updated forward-backward movement distance, an updated upward-downward movement direction and an updated upward-downward movement distance of the electric steering column 408 according to the position relationship between the updated target position coordinates and the target position coordinates of the electric steering column 408; the control module 405 sends the updated forward-backward moving direction and the updated forward-backward moving distance to the first motor 406, and sends the updated upward-downward moving direction and the updated upward-downward moving distance to the second motor 407, so that the first motor 406 drives the electric steering column 408 to move the updated forward-backward moving distance in the updated forward-backward moving direction, the second motor 407 drives the electric steering column 408 to move the updated upward-downward moving distance in the updated upward-downward moving direction, and the position coordinate of the electric steering column 408 is adjusted from the target position coordinate to the updated target position coordinate.

Optionally, the control module 405 determines whether the position coordinate of the driving seat and the position coordinate of the eyepoint position of the driver at each time meet a preset sitting posture change condition, including: the control module 405 determines whether the distance between the position coordinate of the driving seat at the current processing time and the position coordinate of the driving seat at the previous time is greater than or equal to a first preset distance threshold; if the distance between the position coordinate of the driver's seat at the current processing time and the position coordinate of the driver's seat at the previous time is greater than or equal to a first preset distance threshold, the control module 405 determines whether the distance between the position coordinate of the driver's eye point position at the current processing time and the position coordinate of the driver's eye point position at the previous time is greater than or equal to a second preset distance threshold; if the distance between the position coordinate of the eye point position of the driver at the current processing time and the position coordinate of the eye point position of the driver at the previous time is greater than or equal to a second preset distance threshold, the control module 405 determines whether the position coordinate of the driving seat and the position coordinate of the eye point position of the driver remain unchanged within a preset time period after the current processing time; if the position coordinates of the driving seat and the position coordinates of the eye point position of the driver remain unchanged for the preset time period after the current processing time, the control module 405 determines that the position coordinates of the driving seat and the position coordinates of the eye point position of the driver at the current processing time satisfy the preset sitting posture change condition.

Optionally, the control module 405 determines whether the position coordinate of the driving seat and the position coordinate of the eyepoint position of the driver at each moment meet a preset sitting posture change condition, and further includes: if the distance between the position coordinate of the driving seat at the current processing time and the position coordinate of the driving seat at the previous time is smaller than a first preset distance threshold, the control module 405 determines that the position coordinate of the driving seat at the current processing time and the position coordinate of the eyepoint position of the driver do not meet a preset sitting posture change condition; if the distance between the position coordinate of the eye point position of the driver at the current processing time and the position coordinate of the eye point position of the driver at the previous time is less than a second preset distance threshold, the control module 405 determines that the position coordinate of the driving seat at the current processing time and the position coordinate of the eye point position of the driver do not meet a preset sitting posture change condition; if the position coordinates of the driver's seat and the position coordinates of the driver's eyepoint position do not remain unchanged for the preset time period after the current processing time, the control module 405 determines that the position coordinates of the driver's seat and the position coordinates of the driver's eyepoint position at the current processing time do not satisfy the preset sitting posture change condition.

The embodiment of the invention provides a control system of an electric steering column, which is characterized in that when a control module receives an initial position coordinate of a driving seat and an initial eye point position of a driver, the initial eye point position is converted into a coordinate in a whole vehicle coordinate system to obtain an initial position coordinate of the eye point position of the driver, then a target position coordinate of the electric steering column is determined according to the initial position coordinate of the driving seat and the initial position coordinate of the eye point position of the driver, a front-back moving direction, a front-back moving distance, a front-up moving direction and a front-down moving distance of the electric steering column and a front-down moving distance are determined according to a position relation between the target position coordinate of the electric steering column and a current position coordinate, finally the front-back moving direction and the front-back moving distance are sent to a first motor, the front-up moving direction and the front-down moving distance are sent to a second motor, so that the first motor drives the electric steering column to move the front-back moving distance in the front-back moving direction, the second motor drives the electric steering column to move up and down for a distance in the up-and-down moving direction, the position coordinate of the electric steering column is adjusted to a target position coordinate from the current position coordinate, the position coordinate of the optimal position of the electric steering column corresponding to the initial sitting posture of the driver can be determined according to the initial position coordinate of the driving seat and the initial eye point position of the driver after the driver adjusts the driving seat to the proper seat position, the position coordinate of the optimal position of the electric steering column can be driven to move back and forth and/or up and down according to the position relation between the position coordinate of the optimal position of the electric steering column and the current position coordinate, the position coordinate of the electric steering column is adjusted to the position coordinate of the optimal position from the current position coordinate, and the aim that the driver adjusts the driving seat to the proper seat position is achieved, after the driver determines the initial sitting posture, the electric steering column is automatically controlled to move to the optimal position corresponding to the initial sitting posture of the driver according to the position coordinates of the current driving seat and the eyepoint position of the driver, so that the steering wheel mounted on the electric steering column is adjusted to the appropriate position relative to the driver in the initial sitting posture, the driver in the initial sitting posture is guaranteed to have enough leg space, the driver in the initial sitting posture is guaranteed to be capable of observing information of the combination instrument comprehensively through the steering wheel, and the control requirement of the driver on the steering wheel and the requirement of observing the combination instrument through the steering wheel are met.

EXAMPLE five

Fig. 5 is a schematic structural diagram of a computer device according to a fifth embodiment of the present invention. FIG. 5 illustrates a block diagram of an exemplary computer device 512 suitable for use in implementing embodiments of the present invention. The computer device 512 shown in FIG. 5 is only an example and should not bring any limitations to the functionality or scope of use of embodiments of the present invention.

As shown in FIG. 5, computer device 512 is in the form of a general purpose computing device. Components of computer device 512 may include, but are not limited to: one or more processors 516, a memory 528, and a bus 518 that couples the various system components including the memory 528 and the processors 516.

Bus 518 represents one or more of any of several types of bus structures, including a memory bus or memory controller, a peripheral bus, an accelerated graphics port, and a processor or local bus using any of a variety of bus architectures. By way of example, such architectures include, but are not limited to, Industry Standard Architecture (ISA) bus, micro-channel architecture (MAC) bus, enhanced ISA bus, Video Electronics Standards Association (VESA) local bus, and Peripheral Component Interconnect (PCI) bus.

Computer device 512 typically includes a variety of computer system readable media. Such media can be any available media that is accessible by computer device 512 and includes both volatile and nonvolatile media, removable and non-removable media.

Memory 528 may include computer system readable media in the form of volatile memory, such as Random Access Memory (RAM)530 and/or cache memory 532. The computer device 512 may further include other removable/non-removable, volatile/nonvolatile computer system storage media. By way of example only, storage system 534 may be used to read from and write to non-removable, nonvolatile magnetic media (not shown in FIG. 5, and commonly referred to as a "hard drive"). Although not shown in FIG. 5, a magnetic disk drive for reading from and writing to a removable, nonvolatile magnetic disk (e.g., a "floppy disk") and an optical disk drive for reading from or writing to a removable, nonvolatile optical disk (e.g., a CD-ROM, DVD-ROM, or other optical media) may be provided. In these cases, each drive may be connected to bus 518 through one or more data media interfaces. Memory 528 may include at least one program product having a set (e.g., at least one) of program modules that are configured to carry out the functions of embodiments of the invention.

A program/utility 540 having a set (at least one) of program modules 542, including but not limited to an operating system, one or more application programs, other program modules, and program data, may be stored in, for example, the memory 528, each of which examples or some combination may include an implementation of a network environment. The program modules 542 generally perform the functions and/or methods of the described embodiments of the invention.

The computer device 512 may also communicate with one or more external devices 514 (e.g., keyboard, pointing device, display 524, etc.), with one or more devices that enable a user to interact with the computer device 512, and/or with any devices (e.g., network card, modem, etc.) that enable the computer device 512 to communicate with one or more other computing devices. Such communication may occur via input/output (I/O) interfaces 522. Also, computer device 512 may communicate with one or more networks (e.g., a Local Area Network (LAN), a Wide Area Network (WAN), and/or a public network such as the Internet) via network adapter 520. As shown, the network adapter 520 communicates with the other modules of the computer device 512 via the bus 518. It should be appreciated that although not shown in FIG. 5, other hardware and/or software modules may be used in conjunction with computer device 512, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems, among others.

The processor 516 executes various functional applications and data processing by executing programs stored in the memory 528, thereby implementing the control method of the electric steering column according to the embodiment of the present invention: when receiving an initial position coordinate of a driving seat and an initial eye point position of a driver, converting the initial eye point position into a coordinate under a whole vehicle coordinate system to obtain the initial position coordinate of the eye point position of the driver; the initial position coordinate of the driving seat is the position coordinate of the driving seat acquired by the seat position acquisition module when the seat position adjustment completion information is received, and the initial eye point position of the driver is the eye point position of the driver acquired by the eye point position acquisition module when the seat position adjustment completion information is received; determining target position coordinates of the electric steering column according to the initial position coordinates of the driving seat and the initial position coordinates of the eye point position of the driver; determining a front-back movement direction, a front-back movement distance, a front-up movement direction and a front-down movement distance of the electric steering column according to a position relation between a target position coordinate and a current position coordinate of the electric steering column; sending the front-back moving direction and the front-back moving distance to a first motor, and sending the up-down moving direction and the up-down moving distance to a second motor, so that the first motor drives the electric steering column to move the front-back moving distance in the front-back moving direction, the second motor drives the electric steering column to move the up-down moving distance in the up-down moving direction, and the position coordinate of the electric steering column is adjusted to the target position coordinate from the current position coordinate; the steering wheel of the vehicle is mounted on the electric steering column, the first motor and the second motor are respectively connected with the electric steering column, the first motor is used for driving the electric steering column to move back and forth, and the second motor is used for driving the electric steering column to move up and down.

EXAMPLE six

Sixth embodiment of the present invention provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements a control method of an electric steering column provided by an embodiment of the present invention: when receiving an initial position coordinate of a driving seat and an initial eye point position of a driver, converting the initial eye point position into a coordinate under a whole vehicle coordinate system to obtain the initial position coordinate of the eye point position of the driver; the initial position coordinate of the driving seat is the position coordinate of the driving seat acquired by the seat position acquisition module when the seat position adjustment completion information is received, and the initial eye point position of the driver is the eye point position of the driver acquired by the eye point position acquisition module when the seat position adjustment completion information is received; determining target position coordinates of the electric steering column according to the initial position coordinates of the driving seat and the initial position coordinates of the eye point position of the driver; determining a front-back movement direction, a front-back movement distance, a front-up movement direction and a front-down movement distance of the electric steering column according to a position relation between a target position coordinate and a current position coordinate of the electric steering column; sending the front-back moving direction and the front-back moving distance to a first motor, and sending the up-down moving direction and the up-down moving distance to a second motor, so that the first motor drives the electric steering column to move the front-back moving distance in the front-back moving direction, the second motor drives the electric steering column to move the up-down moving distance in the up-down moving direction, and the position coordinate of the electric steering column is adjusted to the target position coordinate from the current position coordinate; the steering wheel of the vehicle is mounted on the electric steering column, the first motor and the second motor are respectively connected with the electric steering column, the first motor is used for driving the electric steering column to move back and forth, and the second motor is used for driving the electric steering column to move up and down.

Any combination of one or more computer-readable media may be employed. The computer readable medium may be a computer readable signal medium or a computer readable storage medium. A computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples (a non-exhaustive list) of the computer readable storage medium would include the following: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the context of this document, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.

A computer readable signal medium may include a propagated data signal with computer readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take many forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.

Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.

Computer program code for carrying out operations for aspects of the present invention may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, Smalltalk, C + + or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or computer device. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or the connection may be made to an external computer (for example, through the Internet using an Internet service provider).

It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A method of controlling an electric steering column, comprising:

the control method of the electric steering column further comprises the following steps:

when the vehicle is detected to be in a parking state, acquiring the position coordinates of the driving seat and the eye point position of the driver at regular time according to a preset time interval, and converting the eye point position into coordinates in a whole vehicle coordinate system to obtain the position coordinates of the eye point position;

judging whether the position coordinates of the driving seat and the eye point position of the driver at each moment meet a preset sitting posture change condition or not;

when the position coordinates of the driving seat and the eye point position of the driver at the target moment are detected to meet the preset sitting posture change condition, determining the updated target position coordinates of the electric steering column according to the position coordinates of the driving seat and the eye point position of the driver at the target moment;

determining an updated forward-backward movement direction, an updated forward-backward movement distance, an updated up-down movement direction and an updated up-down movement distance of the electric steering column according to the position relation between the updated target position coordinate and the target position coordinate of the electric steering column;

sending the updated forward-backward moving direction and the updated forward-backward moving distance to the first motor, and sending the updated upward-downward moving direction and the updated upward-downward moving distance to the second motor, so that the first motor drives the electric steering column to move the updated forward-backward moving distance in the updated forward-backward moving direction, and the second motor drives the electric steering column to move the updated upward-downward moving distance in the updated upward-downward moving direction, and the position coordinate of the electric steering column is adjusted from the target position coordinate to the updated target position coordinate;

whether the position coordinates of the driving seat and the position coordinates of the eyepoint position of the driver at each moment meet the preset sitting posture change condition or not is judged, and the method comprises the following steps of:

judging whether the distance between the position coordinate of the driving seat at the current processing moment and the position coordinate of the driving seat at the previous moment is greater than or equal to a first preset distance threshold value or not;

if the distance between the position coordinate of the driving seat at the current processing moment and the position coordinate of the driving seat at the previous moment is larger than or equal to a first preset distance threshold value, judging whether the distance between the position coordinate of the eye point position of the driver at the current processing moment and the position coordinate of the eye point position of the driver at the previous moment is larger than or equal to a second preset distance threshold value or not;

if the distance between the position coordinate of the eye point position of the driver at the current processing moment and the position coordinate of the eye point position of the driver at the previous moment is larger than or equal to a second preset distance threshold value, judging whether the position coordinate of the driving seat and the position coordinate of the eye point position of the driver are kept unchanged within a preset time length after the current processing moment;

and if the position coordinates of the driving seat and the eye point position of the driver are kept unchanged within the preset time length after the current processing time, determining that the position coordinates of the driving seat and the eye point position of the driver at the current processing time meet the preset sitting posture change condition.

2. The method of claim 1, wherein determining target position coordinates for the electric steering column based on initial position coordinates of the driver seat and initial position coordinates of the driver's eyepoint position comprises:

acquiring an electric steering column position coordinate corresponding to an initial position coordinate of the driving seat and an initial position coordinate of the eye point position of the driver from a preset position coordinate database as a target position coordinate of the electric steering column;

the preset position coordinate database stores electric steering column position coordinates which correspond to the position coordinates of the driving seat and the position coordinates of the eyepoint position one by one.

3. The method according to claim 1, wherein determining the forward-backward moving direction, the forward-backward moving distance, the upward-downward moving direction, and the upward-downward moving distance of the electric steering column based on the positional relationship between the target position coordinates and the current position coordinates of the electric steering column comprises:

determining the forward-backward movement direction and the forward-backward movement distance of the electric steering column according to the forward-backward position relation between the target position coordinate and the current position coordinate of the electric steering column;

and determining the up-down moving direction and the up-down moving distance of the electric steering column according to the up-down position relation between the target position coordinate and the current position coordinate of the electric steering column.

4. The method of claim 1, wherein the determining whether the position coordinates of the driving seat and the eye point position of the driver at each time point satisfy a preset sitting posture change condition further comprises:

if the distance between the position coordinate of the driving seat at the current processing moment and the position coordinate of the driving seat at the previous moment is smaller than a first preset distance threshold value, determining that the position coordinate of the driving seat at the current processing moment and the position coordinate of the eyepoint position of the driver do not meet a preset sitting posture change condition;

if the distance between the position coordinate of the eye point position of the driver at the current processing moment and the position coordinate of the eye point position of the driver at the previous moment is smaller than a second preset distance threshold value, determining that the position coordinate of the driving seat at the current processing moment and the position coordinate of the eye point position of the driver do not meet a preset sitting posture change condition;

and if the position coordinates of the driving seat and the eye point position of the driver are not kept unchanged within the preset time length after the current processing time, determining that the position coordinates of the driving seat and the eye point position of the driver at the current processing time do not meet the preset sitting posture change condition.

5. A control device of an electric steering column, characterized by comprising:

wherein, the controlling means of electronic steering column still includes:

the position coordinate timing acquisition module is used for acquiring the position coordinate of the driving seat and the eye point position of the driver at regular time according to a preset time interval when the vehicle is detected to be in a parking state, and converting the eye point position into a coordinate under a whole vehicle coordinate system to obtain the position coordinate of the eye point position;

the sitting posture change condition judgment module is used for judging whether the position coordinates of the driving seat and the eye point position of the driver at each moment meet a preset sitting posture change condition or not;

the position coordinate updating module is used for determining an updated target position coordinate of the electric steering column according to the position coordinate of the driving seat at the target moment and the position coordinate of the eyepoint position of the driver when the position coordinate of the driving seat at the target moment and the position coordinate of the eyepoint position of the driver are detected to meet a preset sitting posture change condition;

the mobile information updating module is used for determining the updating front-back movement direction, the updating front-back movement distance, the updating up-down movement direction and the updating up-down movement distance of the electric steering column according to the position relation between the updating target position coordinate and the target position coordinate of the electric steering column;

an update position coordinate adjusting module, configured to send the update forward-backward moving direction and the update forward-backward moving distance to the first motor, and send the update upward-downward moving direction and the update upward-downward moving distance to the second motor, so that the first motor drives the electric steering column to move the update forward-backward moving distance in the update forward-backward moving direction, and the second motor drives the electric steering column to move the update upward-downward moving distance in the update upward-downward moving direction, and adjusts the position coordinate of the electric steering column from the target position coordinate to the update target position coordinate;

the sitting posture change condition judgment module comprises:

the first judgment unit is used for judging whether the distance between the position coordinate of the driving seat at the current processing moment and the position coordinate of the driving seat at the previous processing moment is larger than or equal to a first preset distance threshold value or not;

a second determination unit, configured to determine whether a distance between the position coordinate of the eye point position of the driver at the current processing time and the position coordinate of the eye point position of the driver at the previous time is greater than or equal to a second preset distance threshold, if the distance between the position coordinate of the driving seat at the current processing time and the position coordinate of the driving seat at the previous time is greater than or equal to the first preset distance threshold;

a third judging unit, configured to judge whether the position coordinate of the driving seat and the position coordinate of the eye point position of the driver remain unchanged for a preset time period after the current processing time if a distance between the position coordinate of the eye point position of the driver at the current processing time and the position coordinate of the eye point position of the driver at the previous time is greater than or equal to a second preset distance threshold;

a first determination unit configured to determine that the position coordinate of the driver's seat and the position coordinate of the driver's eyepoint position at the current processing time satisfy a preset sitting posture change condition if the position coordinate of the driver's seat and the position coordinate of the driver's eyepoint position remain unchanged for a preset time period after the current processing time.

6. A control system for an electric steering column, comprising:

the control module is used for converting the initial eye point position into a coordinate under a whole vehicle coordinate system when receiving the initial position coordinate of the driving seat and the initial eye point position of the driver to obtain the initial position coordinate of the eye point position of the driver; determining target position coordinates of the electric steering column according to the initial position coordinates of the driving seat and the initial position coordinates of the eye point position of the driver; determining a front-back movement direction, a front-back movement distance, a front-up movement direction and a front-down movement distance of the electric steering column according to a position relation between a target position coordinate and a current position coordinate of the electric steering column; sending the forward-backward moving direction and the forward-backward moving distance to the first motor, and sending the upward-downward moving direction and the upward-downward moving distance to the second motor, so that the first motor drives the electric steering column to move the forward-backward moving distance in the forward-backward moving direction, the second motor drives the electric steering column to move the upward-downward moving distance in the upward-downward moving direction, and the position coordinate of the electric steering column is adjusted from the current position coordinate to the target position coordinate;

wherein, electric steering column's control system still includes:

the control module is used for regularly acquiring the position coordinates of the driving seat and the eye point position of the driver according to a preset time interval when detecting that the vehicle is in a parking state, and converting the eye point position into coordinates in a whole vehicle coordinate system to obtain the position coordinates of the eye point position; the control module judges whether the position coordinates of the driving seat and the eye point position of the driver at each moment meet a preset sitting posture change condition or not; when the control module detects that the position coordinate of the driving seat at the target moment and the position coordinate of the eyepoint position of the driver meet a preset sitting posture change condition, determining an updated target position coordinate of the electric steering column according to the position coordinate of the driving seat at the target moment and the position coordinate of the eyepoint position of the driver; the control module determines an updating front-back moving direction, an updating front-back moving distance, an updating up-down moving direction and an updating up-down moving distance of the electric steering column according to the position relation between the updating target position coordinate and the target position coordinate of the electric steering column; the control module sends the updating front-and-back moving direction and the updating front-and-back moving distance to the first motor, and sends the updating up-and-down moving direction and the updating up-and-down moving distance to the second motor, so that the first motor drives the electric steering column to move the updating front-and-back moving distance to the updating front-and-back moving direction, the second motor drives the electric steering column to move the updating up-and-down moving distance to the updating up-and-down moving direction, and the position coordinate of the electric steering column is adjusted from the target position coordinate to the updating target position coordinate;

whether the position coordinate of the driving seat at each moment and the position coordinate of the eyepoint position of the driver meet the preset sitting posture change condition or not is judged by the control module, and the method comprises the following steps: the control module judges whether the distance between the position coordinate of the driving seat at the current processing moment and the position coordinate of the driving seat at the previous moment is larger than or equal to a first preset distance threshold value or not; if the distance between the position coordinate of the driving seat at the current processing moment and the position coordinate of the driving seat at the previous moment is larger than or equal to a first preset distance threshold, the control module judges whether the distance between the position coordinate of the eye point position of the driver at the current processing moment and the position coordinate of the eye point position of the driver at the previous moment is larger than or equal to a second preset distance threshold or not; if the distance between the position coordinate of the eye point position of the driver at the current processing moment and the position coordinate of the eye point position of the driver at the previous moment is larger than or equal to a second preset distance threshold value, the control module judges whether the position coordinate of the driving seat and the position coordinate of the eye point position of the driver are kept unchanged within a preset time length after the current processing moment; and if the position coordinates of the driving seat and the position coordinates of the eyepoint position of the driver are kept unchanged within the preset time length after the current processing time, the control module determines that the position coordinates of the driving seat and the position coordinates of the eyepoint position of the driver at the current processing time meet the preset sitting posture change condition.

7. A computer arrangement comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor, when executing the computer program, implements a method of controlling an electric steering column according to any of claims 1-4.

8. A computer-readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, implements a control method of an electric steering column according to any one of claims 1-4.