CN106994915B - Driving seat self-adaptive adjusting device based on body characteristics of driver - Google Patents
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- 238000000034 method Methods 0.000 claims description 11
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- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
- B60N2/0224—Non-manual adjustments, e.g. with electrical operation
- B60N2/02246—Electric motors therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
- B60N2/0224—Non-manual adjustments, e.g. with electrical operation
- B60N2/0244—Non-manual adjustments, e.g. with electrical operation with logic circuits
- B60N2/0248—Non-manual adjustments, e.g. with electrical operation with logic circuits with memory of positions
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
- B60N2/0224—Non-manual adjustments, e.g. with electrical operation
- B60N2/0244—Non-manual adjustments, e.g. with electrical operation with logic circuits
- B60N2/0268—Non-manual adjustments, e.g. with electrical operation with logic circuits using sensors or detectors for adapting the seat or seat part, e.g. to the position of an occupant
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Abstract
The invention discloses a driving seat self-adaptive adjusting device based on body characteristics of a driver, which comprises a gravity sensor, a driver body size identification system, a driver sitting posture angle identification system, an adjusting control system, a driving system and a storage system. The invention monitors the body characteristic parameters influencing the adjustment mode of the driver seat in real time from multiple aspects, eliminates the influence of individual difference of the driver on the recognition of the sitting posture angle, and has higher accuracy and better accuracy. Meanwhile, the invention has a memory function, automatically stores the body characteristic information of the driver and the matched seat adjusting scheme, automatically matches the existing adjusting scheme according to the body characteristic heart of the driver for adjustment, and has higher timeliness and convenience.
Description
Technical Field
The invention relates to the field of automobile seat adjusting devices, in particular to a driving seat self-adaptive adjusting device based on body characteristics of a driver.
Background
With the vigorous development of national economy, automobiles have become the current most important means of transportation. The automobile industry is taken as one of national economic pillar industries in foreign industrially developed countries, in recent years, the economic development of China is rapid, and the consumption of automobiles gradually becomes an important index driving the total value of national production. At present, with the increasing popularity of automobiles, the requirements of vehicle users on riding comfort and ease of operation are higher and higher, and therefore, the adjusting device and method of the vehicle seat become more and more important.
Existing automotive seat adjustment devices typically use mechanical devices or electrical switches in the form of buttons to drive motors to make relevant adjustments to the seat (e.g., back angle, seat height, seat fore and aft position, etc.). In addition, in the conventional vehicle seat adjusting apparatus, a dedicated memory switch is generally additionally used in order to memorize the seat position frequently used by the user.
However, the existing vehicle seat adjusting device and method have the following problems: (1) Since the related adjustment of the seat is performed using a mechanical device or an electrical switch, the riding comfort of the vehicle user and the seat adjustment accuracy cannot be ensured; (2) Because the vehicle seat in the prior art does not have a memory adjustment function, different drivers need to readjust the seat when driving the vehicle again, but the adjusted position and angle are often difficult to accurately master, the optimal position cannot be quickly reached, and certain time and energy are consumed; (3) The conventional memorable electric seat is added with the functions of memorizing and calling out the position of the seat on the basis of the mechanical adjusting function of the common electric seat, the setting process is relatively complicated, and the adjustment is relatively inconvenient if a driver is frequently replaced.
Disclosure of Invention
The invention aims to provide a driving seat self-adaptive adjusting device based on physical characteristics of a driver so as to realize automatic adjustment of a driving seat.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a self-adaptive driving seat adjusting device based on physical characteristics of a driver is characterized in that: including gravity sensor, driver body size identification system, driver position of sitting angle identification system, regulation control system, actuating system and storage system, wherein:
the gravity sensor is arranged in a cushion of the driver seat, and acquires the weight data of the driver;
the driver body size recognition system consists of an image acquisition module and a data processing module which are arranged above a main cab of the automobile, wherein the image acquisition module acquires a driver thermal imaging picture and transmits the driver thermal imaging picture data to the data processing module, and the data processing module processes and analyzes the driver thermal imaging picture data to obtain various pieces of body size information of the driver required by adjusting a driver seat;
the driver sitting posture angle recognition system comprises hardware formed by a processor and a program in the hardware, wherein data processing modules of a gravity sensor and a driver body size recognition system are respectively connected with the hardware in the driver sitting posture angle recognition system, the gravity sensor transmits acquired weight data of a driver to the driver sitting posture angle recognition system, the driver body size recognition system transmits various body size information of the driver obtained through analysis to the driver sitting posture angle recognition system, the program in the driver sitting posture angle recognition system judges a comfortable sitting posture angle of the driver according to the weight data of the driver and the various body size information of the driver, namely, a multivariate linear regression model which takes the weight, the upper arm length, the forearm length, the shank length, the thigh length and the trunk line length of the driver as independent variables and takes main parameters of the comfortable sitting posture, such as the included angle between the trunk line and the vertical direction, the included angle between the trunk and the thigh and the included angle between the thigh and the shank, and the main parameters of the sitting posture of the shank as dependent variables is established, and a plurality of drivers's seats comfort regulation experiment can be used for obtaining a regression coefficient of the regression model;
the driving system consists of a plurality of driving motors for driving the driving seat to move back and forth, move up and down and adjust the angle of the backrest, and the control end of each driving motor is respectively connected with the adjusting control system which controls and drives each driving motor;
the adjusting control system is composed of a control chip, the adjusting control system receives comfortable sitting posture angle information obtained by the driver sitting posture angle identifying system, and the adjusting control system calls various body size information of the driver obtained by the driver body size identifying system, the comfortable sitting posture angle information refers to an included angle between a trunk line and a vertical direction, an included angle between the trunk and a thigh and included angle between the thigh and a shank, which are obtained by the driver sitting posture angle identifying system through a multiple linear regression model, the control chip converts various body size information and the comfortable sitting posture angle information of the driver into digital signals for data processing, two-dimensional adjusting data of a driving seat and seat back angle adjusting data are obtained, working parameters of various driving motors are obtained according to the two-dimensional adjusting data of the driving seat and the seat back angle adjusting data to serve as a driving seat adjusting scheme, the working parameters in the driving seat adjusting scheme are converted into pulse signals for controlling various motors in the driving system, the driving motors receive the pulse signals of the adjusting control system and perform two-dimensional adjustment on the driving seat back, and the seat angle adjustment is performed;
the storage system is respectively connected with the gravity sensor, the driver body size recognition system and the adjusting control system, the storage system stores the weight data of the driver collected by the gravity sensor and the body size information of each driver obtained by the driver body size recognition system, the adjusting control system calls the body size information of each driver obtained by the driver body size recognition system in the storage system, and the storage system stores the adjusting scheme of the driving seat obtained by the adjusting control system.
The driving seat self-adaptive adjusting device based on the body characteristics of the driver is characterized in that: the driver sitting posture angle recognition system adjusts the weight X of each driver when a driving seat is adjusted to a comfortable position based on a large amount of real vehicle test data of a plurality of drivers 1 Upper arm length X 2 Length of forearm X 3 Length of shank X 4 Thigh length X 5 Trunk line length X 6 As independent variable, the angle theta between the corresponding comfortable sitting posture parameter trunk line and the vertical direction 1 Angle theta between trunk and thigh 2 And the angle theta between the lower leg and the thigh 3 As a dependent variable, the multiple linear regression equation is then expressed as:
θ 1 ＝β 0 +β 1 X 1 +β 2 X 2 +β 3 X 3 +β 4 X 4 +β 5 X 5 +β 6 X 6
θ 2 ＝β 10 +β 11 X 1 +β 12 X 2 +β 13 X 3 +β 14 X 4 +β 15 X 5 +β 16 X 6
θ 3 ＝β 20 +β 21 X 1 +β 22 X 2 +β 23 X 3 +β 24 X 4 +β 25 X 5 +β 26 X 6
in the formula, beta 0 、β 10 、β 20 Is a constant, beta 1 、β 2 、β 3 、β 4 、β 5 、β 6 、β 11 、β 12 、β 13 、β 14 、β 15 、β 16 、β 21 、β 22 、β 23 、β 24 、β 25 、β 26 Is the regression coefficient of the model.
The driving seat self-adaptive adjusting device based on the body characteristics of the driver is characterized in that: in the regulation control system, the shank length X of the driver collected in the body size recognition system of the driver 4 Thigh length X 5 And trunk line length X 6 And the included angle theta between the trunk line and the vertical direction, which is acquired from the driver sitting posture angle recognition system 1 The angle theta between the trunk and the thigh 2 And the angle theta between the lower leg and the thigh 3 And (3) carrying out data processing analysis, and calculating and outputting the height A, the front-back distance B and the backrest angle alpha of the seat to be adjusted, wherein:
A＝X 4 ×sin(90°+θ 2 -θ 1 -θ 3 )
B＝cos(90°+θ 2 -θ 1 -θ 3 )+X 5 ×cos(90°+θ 1 -θ 2 )+sinθ 1 ×X 6
α＝θ 1 。
the driving seat self-adaptive adjusting device based on the physical characteristics of the driver is characterized in that: the control chip in the regulation control system converts the digital signal after calculation into a pulse signal, namely quantifies the distance or the angle of the seat required to be regulated in the corresponding direction into the number of the Hall pulses, and distributes the number of the Hall pulses to each driving motor of the driving system, wherein the regulation L of each motor is in direct proportion to the number N of the Hall pulses, namely:
L＝N·ω
wherein ω is the seat adjustment corresponding to a single hall pulse.
The driving seat self-adaptive adjusting device based on the body characteristics of the driver is characterized in that: the storage system is connected with the adjusting control system, the gravity sensor and the driver body size recognition system, the driver weight data, various body size information and corresponding driving seat adjusting schemes are automatically stored after each adjusting is finished, and when the driver uses the vehicle again, the driver information is automatically matched and fed back to the adjusting control system for direct adjusting.
In the invention:
1. driver body feature monitoring
Main human body parameter indexes when the comfort degree of the seat is adjusted by the driver are obtained on the basis of literature reference, driver interview and questionnaire survey: body weight, upper arm length, forearm length, calf length, thigh length, and trunk line length. A driver body size monitoring system is established on the basis of the method: gravity sensor and driver body size identification system. The gravity sensor is arranged in a cushion of the driver seat and used for acquiring accurate weight information of a driver. The driver body size recognition system is composed of an image acquisition module and a data processing module. The image acquisition module adopts a thermal imaging technology to eliminate the influence of clothes worn by a human body on image analysis and obtain an accurate human body characteristic image; the data processing module digitizes the image information and processes and analyzes the digital image, thereby obtaining the required measurement information.
2. Driver sitting posture angle identification
The driver sitting posture angle recognition is based on a large number of real vehicle experiments of a plurality of drivers, and parameters which can be used for determining comfortable sitting postures of the drivers are generated by establishing a multiple linear regression model: linear regression equations of the included angle between the trunk line and the vertical direction, the included angle between the trunk line and the thigh and the included angle between the thigh and the shank.
3. Regulating control
The method comprises the steps of acquiring body characteristic information of a driver according to a body size recognition system and a sitting posture angle recognition system of the driver, calculating the height, the front-back distance and the backrest angle of a seat which enables the driver to feel comfortable through analysis, distributing the analysis result to each driving motor of a driving system, and adjusting the seat to a state meeting the comfort level of the driver.
The invention has the following advantages:
1. the invention obtains comfortable sitting postures of the driver through experiments and analysis on the basis of the existing research theory, further obtains corresponding seat adjusting modes of the driver with different body characteristics, and ensures comprehensiveness and reliability. The comfortable sitting posture adjusting mode of the driver based on a large number of experiments ensures the objectivity and accuracy of adjustment.
2. The method realizes the adjustment of the comfortable sitting posture angle of the driver by establishing a multiple linear regression equation, and performs a series of real vehicle driving training to perform multiple fitting and verification on regression analysis after the model is established.
3. The invention monitors the physical characteristics of the driver in real time, has short monitoring process time and can transmit the physical characteristic indexes of the driver in time, and can quickly adjust the seat to the optimal position aiming at the driver with the same characteristics.
4. The invention automatically stores the physical characteristics and the adjusting scheme of the adjusted driver, and automatically matches the adjusting scheme for adjustment when the driver uses the vehicle again next time, thereby having higher accuracy and convenience.
5. The invention can automatically adjust the driving seat immediately after a driver sits on the seat and starts the vehicle, quickly adjust the seat to a comfortable position, and has real-time property and timeliness.
Drawings
Fig. 1 is a structural schematic diagram of a driving seat adaptive adjustment device based on physical characteristics of a driver according to the invention.
Fig. 2 is a flow chart of the physical characteristic monitoring and seat adjusting of the driver according to the invention.
Detailed Description
The following is a detailed description of the embodiments of the present invention, which is implemented on the premise of the technical solution of the present invention, and the detailed implementation and the specific operation procedures are given, but the scope of the present invention is not limited to the following embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, a driving seat adaptive adjustment device based on the body characteristics of a driver comprises a gravity sensor 1, a driver body size recognition system 2, a driver sitting posture angle recognition system 3, an adjustment control system 4, a driving system 5 and a storage system 6. The input end of the gravity sensor is connected with a gravity sensor and a body size recognition system, and the output end of the gravity sensor is connected with a driving motor and a storage system; the gravity sensor is positioned in the cushion of the driving seat and used for detecting the weight information of the driver; the body size recognition system is arranged above the door of the main cab and used for acquiring body characteristic images of a driver and acquiring body size information; the driving motor is positioned below the driver seat and used for controlling the height, the front-back distance and the backrest angle of the driver seat; the storage system is located inside the instrument desk and used for storing and calling the driving seat adjusting scheme.
The sitting posture angle recognition system and the adjusting control system both belong to a processor part, the sitting posture angle recognition system generates a linear regression equation capable of being used for recognizing comfortable sitting posture angles of drivers based on a large number of real vehicle tests of multiple drivers by repeatedly carrying out seat adjusting tests and model verification, the body characteristic parameters of the drivers are acquired through the body size recognition system and the gravity sensor to recognize the sitting posture angles of the seats, and body size information is called and transmitted to the adjusting control system. The adjusting control system obtains an adjusting scheme of the driving seat through analysis and calculation on the basis of body size data and comfortable sitting posture data of a driver, and converts the adjusting scheme into a pulse signal to control the driving motor to adjust.
The specific implementation process for the automatic adjustment of the driving seat of the invention is as follows:
referring to fig. 1 and 2, after a driver enters a vehicle and sits on a main driving seat and starts to drive the vehicle, a gravity sensor and a body size recognition system start to work to respectively acquire weight information and body size information of the driver, and a sitting posture angle recognition system acquires a sitting posture angle of the driver through a linear regression equation according to the information and transfers the body size information to a regulation control system. The adjusting control system analyzes and calculates the body characteristic information of the driver to obtain the height, the front-back distance and the backrest angle of the seat to be adjusted, and controls the three driving motors to adjust respectively. And after final adjustment is finished, storing the body characteristic data of the driver and the corresponding seat adjustment scheme into a storage system, and when the driver with the same body characteristic uses the vehicle, directly sending an instruction to the adjustment control system by the body size recognition system through matching the seat adjustment scheme in the storage system for adjustment.
The invention is based on the common comfortable sitting posture which is expressed when the automobile driver with different body characteristics adjusts the driving seat to the comfortable feeling, carries out comprehensive real-time monitoring on the body characteristics of the driver through the gravity sensor and the body size recognition system, recognizes the comfortable sitting posture angle of the driver through the sitting posture angle recognition system, and finally calculates and analyzes the adjustment scheme of the seat through the adjustment control system, thereby having strong innovation. In addition, still through the seat adjustment mode that the driver of the different health characteristics of storage is different, through the mode of transferring storage data, can guarantee adjustment mode's ageing and convenience again when the comfortable position of sitting of accurate adjustment driver, have stronger practicality.
Claims (2)
1. A self-adaptive driving seat adjusting device based on physical characteristics of a driver is characterized in that: including gravity sensor, driver body size identification system, driver position of sitting angle identification system, regulation control system, actuating system and storage system, wherein:
the gravity sensor is arranged in a cushion of the driver seat, and acquires the weight data of the driver;
the driver body size recognition system consists of an image acquisition module and a data processing module which are arranged above a main cab of the automobile, wherein the image acquisition module acquires a driver thermal imaging picture and transmits the driver thermal imaging picture data to the data processing module, and the data processing module processes and analyzes the driver thermal imaging picture data to obtain various pieces of body size information of the driver required by adjusting a driver seat;
the driver sitting posture angle recognition system comprises hardware formed by a processor and a program in the hardware, wherein data processing modules of a gravity sensor and a driver body size recognition system are respectively connected with the hardware in the driver sitting posture angle recognition system, the gravity sensor transmits acquired weight data of a driver to the driver sitting posture angle recognition system, the driver body size recognition system transmits various body size information of the driver obtained through analysis to the driver sitting posture angle recognition system, the program in the driver sitting posture angle recognition system judges a comfortable sitting posture angle of the driver according to the weight data of the driver and the various body size information of the driver, namely, a multivariate linear regression model which takes the weight, the upper arm length, the forearm length, the shank length, the thigh length and the trunk line length of the driver as independent variables and takes main parameters of the comfortable sitting posture, such as the included angle between the trunk line and the vertical direction, the included angle between the trunk and the thigh and the included angle between the thigh and the shank, and the main parameters of the sitting posture of the shank as dependent variables is established, and a plurality of drivers's seats comfort regulation experiment can be used for obtaining a regression coefficient of the regression model;
the driving system consists of a plurality of driving motors for driving the driving seat to move back and forth, move up and down and adjust the angle of the backrest, and the control end of each driving motor is respectively connected with the adjusting control system which controls and drives each driving motor;
the adjusting control system is composed of a control chip, the adjusting control system receives comfortable sitting posture angle information obtained by the driver sitting posture angle identifying system and various body size information of the driver obtained by the adjusting control system calling the driver body size identifying system, the comfortable sitting posture angle information refers to an included angle between a trunk line and a vertical direction, an included angle between the trunk and thighs and included angle between thighs and shanks, which are obtained by the driver sitting posture angle identifying system through a multiple linear regression model, the control chip converts various body size information and comfortable sitting posture angle information of the driver into digital signals to perform data processing, two-dimensional adjusting data of a driving seat and seat back angle adjusting data are obtained, working parameters of each driving motor are obtained according to the two-dimensional adjusting data of the driving seat and the seat back angle adjusting data to serve as a driving seat adjusting scheme, finally the working parameters in the driving seat adjusting scheme are converted into pulse signals used for controlling each motor in the driving system, each driving motor receives the pulse signals of the adjusting control system and performs two-dimensional adjustment on the driving seat, and the seat back angle adjustment is performed;
the storage system is respectively connected with the gravity sensor, the driver body size recognition system and the adjusting control system, the storage system stores the weight data of the driver collected by the gravity sensor and the body size information of each driver obtained by the driver body size recognition system, the adjusting control system calls the body size information of each driver obtained by the driver body size recognition system in the storage system, and the storage system stores the driving seat adjusting scheme obtained by the adjusting control system;
the driver sitting posture angle recognition system adjusts the weight X of each driver when a driving seat is adjusted to a comfortable position based on a large amount of real vehicle test data of a plurality of drivers 1 Upper arm length X 2 Length of forearm X 3 Length of shank X 4 Thigh length X 5 Length of trunk line X 6 As independent variable, the angle between the corresponding comfortable sitting posture parameter trunk line and the vertical direction
1 The angle between the trunk and the thigh
2 And the angle between the shank and the thigh
3 As a dependent variable, the multiple linear regression model is then expressed as:
in the formula,
、
、
is a constant number of times, and is,
、
、
、
、
、
、
、
、
、
、
、
、
、
、
、
、
、
is the regression coefficient of the model;
in the regulation control system, the shank length X of the driver collected in the body size recognition system of the driver 4 Thigh length X 5 And trunk line length X 6 And the included angle between the trunk line and the vertical direction acquired in the driver sitting posture angle recognition system
1 The angle between the trunk and the thigh
2 And the angle between the shank and the thigh
3 Processing and analyzing data, calculating and outputting the height A, the front-back distance B and the backrest angle of the seat to be adjusted
Wherein:
the control chip in the regulation control system converts the digital signal after calculation into a pulse signal, namely quantifies the distance or the angle of the seat required to be regulated in the corresponding direction into the number of the Hall pulses, and distributes the number of the Hall pulses to each driving motor of the driving system, wherein the regulation L of each motor is in direct proportion to the number N of the Hall pulses, namely:
wherein,
the seat adjustment degree corresponding to a single Hall pulse.
2. The self-adaptive driving seat adjusting device based on the physical characteristics of the driver as claimed in claim 1, wherein: the storage system is connected with the adjusting control system, the gravity sensor and the driver body size recognition system, the driver weight data, various body size information and corresponding driving seat adjusting schemes are automatically stored after each adjusting is finished, and when the driver uses the vehicle again, the driver information is automatically matched and fed back to the adjusting control system for direct adjusting.
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