Driver sitting posture matching intelligent cockpit based on tactile perception and control method

Abstract

The application discloses a kind of individualized driver sitting posture matching intelligent cabin based on tactile perception and control method, intelligent cabin includes active seat system, active safety belt system and air pressure distribution system, wherein five tactile perception air bags are assembled in active seat system, three tactile perception air bags are respectively assembled at the left, middle and right positions of driver waist of seat backrest, two tactile perception air bags are arranged at the position close to driver leg of the both sides of seat base, air bag adjusting device is assembled on the tactile perception air bag in the middle of seat backrest, control method is: step one, instruction air pressure distribution system works with active retractor;Step two, sitting posture function and matching waist height function;Step three, realize matching belt length function;Step four: change sitting posture, form negative feedback.Affirmative effect: ensure seat comfort, sensor sensitivity, tactile interaction reliability.Ensure seat comfort, breathability and economy.

Description

TECHNICAL FIELD

[0001] The present application relates to a driver sitting posture matching intelligent cabin and a control method, in particular to a personalized driver sitting posture matching intelligent cabin based on tactile perception and a control method. BACKGROUND

[0002] At present, with the continuous development of artificial intelligence technology, the traditional manual control mechanical cabin is changing to an automatic control intelligent cabin. However, poor driver adaptability and redundant arrangement form affect the comfort and safety of the driver, resulting in increased cost.

[0003] Due to the difference in human body shape and human inertia, the position and thickness of the safety belt restraint and the waist support and side wings of the seat are not suitable for all people. In terms of safety belts, it is impossible to maximize the safety of passengers and drivers, and there are problems such as insufficient humanization and intelligence in design, limited prediction, and inability to provide the most reliable passive safety and accurate judgment of each accident and timely response. Moreover, there is a contradiction between the size of the safety belt winding force and the convenience of wearing a safety belt. In terms of seats, the comfort and driving posture adaptive adjustment capability are limited, and different drivers cannot be well matched.

[0004] In terms of seat human-computer interaction, tactile-based interaction is a good choice in the vehicle field because it is not sensitive to changing lighting conditions, and its performance will not decrease in the current fixed direction. In addition, it is not adversely affected by background noise or voice superposition. However, in terms of seat tactile interaction sensors, considering the influence of the driver's body shape and posture, a large area of flexible sensors is often needed to obtain sensitive and effective signals, which affects the ventilation and comfort of the seat. In terms of seat tactile interaction actuators, vibration motor matrix is often used, which has the problems of high cost, poor comfort, and difficult arrangement. When using a pneumatic system, in order to adapt to different body shapes, a large area of airbags needs to be arranged, which affects the ventilation of the seat and increases the cost. SUMMARY

[0005] The present application aims to solve the problem of poor driver adaptability and redundant arrangement form in existing intelligent cabins, which affects the comfort and safety of the driver and increases the cost. The present application provides a personalized driver sitting posture matching intelligent cabin based on tactile perception and a control method.

[0006] The application provides a personalized driver sitting posture matching intelligent cockpit based on tactile perception, which comprises an active seat system, an active safety belt system and an air pressure distribution system, wherein five tactile perception air bags are arranged in the active seat system, three tactile perception air bags are arranged at the left, middle and right positions of the seat backrest corresponding to the driver's waist, two tactile perception air bags are arranged at the positions close to the driver's legs on the two sides of the seat base, an air bag adjusting device is arranged on the tactile perception air bag in the middle of the seat backrest, a flexible tactile sensor is arranged on each of the five tactile perception air bags, the air bag adjusting device and the five tactile perception air bags are connected with the air pressure distribution system, the air pressure distribution system provides power for the air bag adjusting device and inputs air into the five tactile perception air bags, the flexible tactile sensors arranged on the five tactile perception air bags and the air pressure distribution system are connected with the vehicle-mounted ECU, the five flexible tactile sensors can transmit the collected data to the vehicle-mounted ECU in real time, the vehicle-mounted ECU controls the air pressure distribution system to input air into the five tactile perception air bags according to the transmission data of the five flexible tactile sensors, and the active safety belt system is connected with the vehicle-mounted ECU and is controlled to work by the vehicle-mounted ECU.

[0007] The airbag adjusting device is connected to the seat frame through the bracket ear, and is covered by the seat foaming sponge. The airbag adjusting device comprises an airbag mounting belt, an upper roller, a lower roller and a transmission piston. The two ends of the upper roller and the lower roller are pivotally connected to two side plates through bearings. The airbag mounting belt is arranged around the upper roller and the lower roller. The tactile perception airbag in the middle of the driver's waist of the seat backrest is arranged on the airbag mounting belt. The upper roller and the lower roller can drive the airbag mounting belt and the tactile perception airbag to move during rotation, so as to adjust the position of the tactile perception airbag. The two side plates between the upper roller and the lower roller are also provided with an intermediate support. The top end of the intermediate support is pivotally connected with a first gear. The left end of the first gear is coaxially provided with a coil spring. The right end of the first gear is coaxially fixedly connected with a driving sleeve. The driving sleeve is provided with a roller pin. The transmission piston is arranged in a sliding groove at the bottom of the intermediate support. The transmission piston can move left and right along the sliding groove. The head end of the transmission piston is provided with a protrusion. The roller pin on the driving sleeve coaxially fixedly connected with the first gear can be fitted with the protrusion at the head end of the transmission piston. The transmission piston can drive the first gear to rotate during left and right movement through the driving sleeve. The roller pin on the driving sleeve coaxially fixedly connected with the first gear can always be kept in a fitted state with the protrusion at the head end of the transmission piston through the coil spring at the left end of the first gear. The upper roller is composed of two rollers. A second gear is arranged on the center shaft in the gap between the two rollers. The first gear at the top end of the intermediate support is engaged with the second gear. The first gear drives the second gear to rotate synchronously during rotation, so as to move the upper roller, the airbag mounting belt and the lower roller to adjust the position of the tactile perception airbag on the airbag mounting belt. A resistance spring is arranged on the connecting rod at the rear of the transmission piston to control the stroke of the transmission piston. The rear end of the transmission piston is connected with the air pressure distribution system through a pipeline. The air pressure distribution system provides pressure gas to drive the transmission piston to move left and right.

[0008] The air pressure distribution system comprises an air compressor, a DC motor, an exhaust electromagnetic valve, a dryer and a control electromagnetic valve. The air compressor, the exhaust electromagnetic valve, the dryer and the control electromagnetic valve are connected in series through pipelines. Six control electromagnetic valves are arranged side by side. The six control electromagnetic valves control the gas pipelines of the five tactile perception airbags and the airbag adjusting device respectively. The DC motor is connected with the air compressor and controls the operation of the air compressor. The DC motor, the exhaust electromagnetic valve, the dryer and the control electromagnetic valve are connected with the vehicle-mounted ECU. The vehicle-mounted ECU controls the operation of the DC motor, the control electromagnetic valve, the exhaust electromagnetic valve and the dryer according to the transmission data of the flexible tactile sensor arranged on the five tactile perception airbags.

[0009] The active safety belt system comprises an active retractor, an upper fulcrum adjusting device and a retraction lower support, wherein the safety belt is arranged in the active retractor, the active retractor, the upper fulcrum adjusting device and the retraction lower support are connected through the safety belt, the upper fulcrum adjusting device is fixed above the B column of the vehicle body, the active retractor is fixed below the B column of the vehicle body, the retraction lower support is fixed on the floor of the vehicle body, one end of the safety belt is fixed to the reel of the active retractor, the other end of the safety belt is fixed to the reel of the retraction lower support through the buckle of the upper fulcrum adjusting device, the active retractor is provided with a belt length sensor and a driving motor, the belt length sensor and the driving motor are connected with the vehicle ECU, the belt length sensor in the active retractor can transmit the collected data to the vehicle ECU in real time, and the vehicle ECU controls the working of the driving motor provided in the active retractor according to the transmitted data.

[0010] The upper fulcrum adjusting device comprises a base, a sliding rail and a sliding block, wherein the rear part of the base is fixed above the B column of the vehicle body, the bottom of the sliding rail is fixed in the open front of the base, the sliding block is sleeved on the sliding rail and can slide along the sliding rail, the buckle of the safety belt is connected to the front cover of the sliding block, the safety belt is inserted in the buckle, a plurality of fixing holes are equidistantly arranged on the sliding rail, the sliding block is provided with a latch corresponding to the position of the fixing hole, the latch is connected with an electromagnet at the rear part, the electromagnet can drive the latch to enter or pull out the fixing hole on the sliding rail, the electromagnet is connected with the vehicle ECU, the vehicle ECU controls the power-on and power-off of the electromagnet to control the insertion and pulling out of the latch in the fixing hole according to the data transmitted by the belt length sensor in the active retractor, and two return springs are symmetrically arranged on the bottom plate of the base below the sliding block, the return of the safety belt connected to the sliding block and the rebound of the return spring drive the sliding block to slide up and down along the sliding rail.

[0011] The flexible tactile sensor, the vehicle ECU, the air compressor, the direct current motor, the exhaust electromagnetic valve and the dryer, the control electromagnetic valve, the sensor, the driving motor, the electromagnet and the limit sensor are all assembled from existing devices, therefore, the specific model and specification are not described in detail.

[0012] The control method of the personalized driver sitting posture matching intelligent cabin based on tactile perception provided by the application comprises the following steps:

[0013] Step one, first, the driver sits down, the tactile perception air bag obtains the driver sitting posture information through the flexible tactile sensor on the surface, and transmits the data to the vehicle ECU, and the vehicle ECU instructs the air pressure distribution system and the active retractor to work according to the driver sitting posture information;

[0014] Step two, secondly, the air pressure distribution system adjusts the air pressure of the air bag adjusting device at the middle position between the driver's waist and the air bag under the control of the vehicle-mounted ECU, changes the thickness of the air bag and the position of the waist support air bag, and then smoothly realizes the functions of guiding and warning, matching the sitting posture and matching the waist height.

[0015] Step three, at the same time, the active retractor moves up and down under the control of the vehicle-mounted ECU, and then smoothly realizes the function of matching the shoulder height, and then the active retractor releases the safety belt to the required length under the control of the vehicle-mounted ECU, and realizes the function of matching the belt length.

[0016] Step four: finally, by matching the sitting posture, waist height, shoulder height and belt length, the driver obtains the corresponding comfort, and the driver further changes the sitting posture according to the comfort to form a negative feedback.

[0017] The working principle of the application is as follows:

[0018] The active seat system of the personalized driver sitting posture matching intelligent cabin and control method based on tactile perception provided by the application comprises five tactile perception air bags installed on the seat waist and side wings of the seat foaming sponge, and an air bag adjusting device is installed on the middle tactile perception air bag of the seat back, the air bag adjusting device and the other five tactile perception air bags are connected with the air pressure distribution system through gas pipes, the required air pressure of the air bag adjusting device and the tactile perception air bag is provided by the air pressure distribution system, and the process of the active seat system is as follows: when the driver sits, the flexible tactile sensor covered on the tactile perception air bag receives a pressure signal, the body size of the driver is preliminarily determined, and the sitting posture information is transmitted to the vehicle-mounted ECU; when the air bag air pressure needs to be increased, the vehicle-mounted ECU controls the air compressor to press the air under the driving of the direct-current motor in the air pressure distribution system, and controls the corresponding control electromagnetic valve to be opened, so that the compressed gas enters the corresponding tactile perception air bag through the closed exhaust electromagnetic valve, the dryer and the opened corresponding control electromagnetic valve, the air pressure of the tactile perception air bag is increased, and then the thickness of the tactile perception air bag is increased; when the air pressure of the tactile perception air bag needs to be reduced, the vehicle-mounted ECU controls the corresponding control electromagnetic valve to be opened, and controls the exhaust electromagnetic valve in the exhaust electromagnetic valve and the dryer to be opened, so that the compressed gas in the tactile perception air bag is discharged into the atmosphere through the opened corresponding control electromagnetic valve and the opened exhaust electromagnetic valve and the dryer, the air pressure of the tactile perception air bag is reduced, and then the thickness of the tactile perception air bag is reduced.

[0019] In addition, the flexible tactile sensor laid on the surface of the tactile perception air bag collects the sitting posture information of the driver in real time and transmits it to the vehicle-mounted ECU, then the air pressure distribution system changes the thickness of the tactile perception air bag, forms a negative feedback line, and then realizes the function of matching the sitting posture, so as to ensure that the softness and hardness of the seat are moderate and the flexible tactile sensor wraps the driver.

[0020] When the working conditions such as bumping, acceleration and deceleration, uphill and downhill or turning, the feedback line will make the haptic perception air bag change in time to complete the adjustment of the driver's sitting posture, when the guidance and early warning functions are implemented, with the help of the air pressure distribution system, the haptic perception air bag can realize the rapid increase of the pressure change frequency to provide clear and rapid feedback tactile signals;

[0021] When the driver sits, the haptic perception air bag at the waist support position is moved up and down by changing the air pressure in the air bag adjusting device by the above method to make the pressure peak signal received by the flexible tactile sensor covering the haptic perception air bag be in the middle position of the haptic perception air bag, so as to ensure that the waist support perfectly fits the driver's sitting posture and the flexible tactile sensor always receives sensitive and reliable peak signals.

[0022] According to the difference of 111mm between the elbow height of the front 1% male sitting posture 312mm and the elbow height of the rear 1% female sitting posture 201mm designed by the Society of Automotive Ergonomics Application (SAEA), the waist support stroke is designed, and the specific parameter design values of the transmission chain are as follows:

[0023] Gear transmission ratio Gear angle Angle between the convex bottom surface on the transmission piston and the horizontal surface Swing angle of the driving sleeve Gear center distance Roller needle length of the driving sleeve Width of the convex on the transmission piston Height of the convex on the transmission piston Rotating diameter of the driving sleeve Radius of the upper roller Therefore, the waist support stroke is obtained .

[0024] The upper support point of the active safety belt system is provided with an upper support point adjusting device, the upper support point adjusting device is fixed above the B column of the vehicle body, the active retractor is fixed below the B column of the vehicle body, the retraction lower support is fixed on the floor of the vehicle body, one end of the safety belt is fixed to the reel shaft of the active retractor, the safety belt passes through the buckle of the upper support point adjusting device, and the other end of the safety belt is fixed with the reel shaft of the retraction lower support.

[0025] The base of the upper fulcrum adjusting device is fixed to the vehicle body. The slide rail in the upper fulcrum adjusting device is SBR30S-250L, and seven holes are drilled every 27 mm in the radial direction of the parallel bottom surface (the difference between the shoulder height of the male in the first 1% of the sitting posture (659 mm) and the shoulder height of the female in the first 1% of the sitting posture (504 mm) according to the statistics of the Society of Applied Ergonomics (SAEA) is 155 mm, and the length of the center line of the circular hole is defined as the upper fulcrum stroke, which is 162 mm). The slide block is improved from SBR30UU, wherein two fixed holes are drilled every 27 mm in the radial direction of the parallel bottom surface of the arc-shaped housing matched with the slide rail. A pair of pull-type electromagnets are fixed inside the slide block, and the pair of pull-type electromagnets are separated on both sides of the arc-shaped housing matched with the slide rail. The latch of the pull-type electromagnet can be matched with the fixed hole of the slide block and the fixed hole of the slide rail through the fixed hole of the slide block matched with the slide rail. The latch of the pull-type electromagnet is always at the maximum stroke under the action of the compression spring inside the pull-type electromagnet, that is, always matched with the fixed hole of the slide rail. The front end cover of the slide block is fixed with a seat belt buckle.

[0026] When the upper fulcrum adjusting device is not working, that is, the upper fulcrum is fixed, the pull-type electromagnet is not powered. At this time, the latch of the pull-type electromagnet is at the maximum stroke under the action of the compression spring inside the pull-type electromagnet, that is, matched with the fixed hole of the slide rail. Therefore, the slide block where the upper fulcrum is located is always in a limited state, which ensures safety under power failure.

[0027] When the upper fulcrum adjusting device starts to work, that is, the upper fulcrum starts to move, the pull-type electromagnet is turned on. At this time, the electromagnetic force of the pull-type electromagnet attracting the latch is greater than the internal compression spring thrust, which drives the latch to separate from the fixed hole of the slide rail. At this time, the slide block where the upper fulcrum is located loses the fixation and can move up and down along the slide rail under the joint action of the upward thrust of the return spring and the downward force of the motor through the seat belt on the buckle on the front end cover of the slide block.

[0028] When the upper fulcrum is about to move to the predetermined stroke, the pull-type electromagnet is disconnected, the electromagnetic force disappears, and the latch is pressed against the slide rail groove under the action of the internal compression spring. After the latch is inserted into the fixed hole along the groove on the slide rail and returns to the matched state with the fixed hole of the slide rail, the motor stops winding or releasing, and then the limit is realized, so that the upper fulcrum is fixed again.

[0029] In the process of working of the active safety belt system, after the vehicle-mounted ECU receives the driver sitting posture information, the active retractor starts to roll up the safety belt, and after the inside belt length sensor of the active retractor detects that the inside safety belt of the lower support is completely released, the inside safety belt of the active retractor is completely rolled up, at this time, the pull-type electromagnet in the upper support point adjusting device is connected, under the action of electromagnetic force, the latch of the pull-type electromagnet is pulled back from the fixed hole on the slide rail, thereby releasing the fixation of the sliding block, and the sliding block starts to move up and down along the slide rail under the joint action of the downward pulling force of the safety belt formed by the motor torque of the active retractor on the safety belt buckle on the upper support point sliding block and the upward pushing force of the return spring, to the driver sitting posture shoulder height calculated according to the driver body information measured by the vehicle-mounted ECU through the flexible tactile sensor, and then the upper support point is fixed.

[0030] After the upper support point is fixed, the active retractor starts to release the safety belt to the belt length required by the driver to wear the safety belt calculated according to the driver body information measured by the vehicle-mounted ECU through the flexible tactile sensor, and the lower support starts to roll up the released safety belt, because the rolling spring stiffness of the lower support is far less than that of the active retractor, when the driver wears the safety belt, a smaller resistance can be overcome, and the safety belt can be easily worn with a certain force feedback, and after the safety belt is worn, the pulling force of the safety belt is completely provided by the active retractor, at this time, the resistance is larger, so that the driver has a wrapping feeling and a sense of security, and the contradiction between the restraint degree of the safety belt and the convenience of wearing the safety belt is balanced.

[0031] The beneficial effects of the present application are as follows:

[0032] The personalized driver sitting posture matching intelligent cabin based on tactile perception and the control method provided by the present application are provided with tactile perception air bags, in the process that the driver enters the cabin and drives, because the flexible tactile sensor is laid on the surface of the relatively soft tactile perception air bag, the driver makes the tactile perception air bag deform through pressure, the flexible tactile sensor also wraps the human body, and then the pressure signal range collected is wider and more reliable, and the flexible tactile sensor transmits the pressure signal to the vehicle-mounted ECU, the vehicle-mounted ECU adjusts the air pressure of each tactile perception air bag through the air pressure distribution system, feedback is formed, and then the seat is more fitted to the human body, so that the seat comfort, sensor sensitivity and tactile interaction reliability are ensured.

[0033] The present application is provided with a waist support air bag adjusting device, after the driver enters the cabin, the driver body posture information obtained through the tactile perception air bag is adjusted by the vehicle-mounted ECU through the air pressure of the air pressure transmission mechanism of the air bag adjusting device in the middle part of the waist through the air pressure distribution system, and then the tactile perception air bag in the waist support part is moved to the corresponding stroke through the transmission system, so that the waist support height is fitted to the human body, the arrangement form and laying area of the tactile perception air bag are simplified, and the seat comfort, air permeability and economy are ensured.

[0034] The five touch sensing air bags are arranged on the seat waist and the upper and lower wings, the peak of the human body pressure signal is obvious, the corresponding body data of different body types can be easily distinguished, the human body pressure signal has high sensitivity, the change of the driver's sitting posture can be quickly responded, and the sensor arrangement scheme provides a new idea of simple, reliable and sensitive for the active safety seat sensor arrangement form.

[0035] The application increases the upper support point adjusting device in the active safety belt system, the pull type electromagnet in the upper support point adjusting device is turned on after the driver enters the cabin, so that the bolt cannot be limited, and the active retractor servo motor receives the driver's body posture information, calculates the corresponding belt length retraction or release of the safety belt according to the corresponding shoulder height, then pulls the upper support point to move downward or pushes the upper support point to move upward by the return spring, the pull type electromagnet is powered off when the corresponding shoulder height is approached, the bolt of the pull type electromagnet is pressed against the sliding rail groove under the action of the spring in the bolt, after the bolt is inserted into the sliding rail hole along the sliding rail groove, the motor stops retraction or release, and then the limit is realized, so that the upper support point is fixed, and the position of the upper support point sliding block is obtained by the geometric relationship conversion of the active retractor internal belt length sensor, and the automatic adjustment of the safety belt shoulder height can be realized by only one motor of the active retractor without additional power source, so that the structure simplicity is ensured, and the safety belt reliability is ensured by the redundant arrangement and the constant limiting state of the upper support point bolt.

[0036] The fixed seat is improved into a retraction lower support in the active safety belt system, after the motor adjusts the safety belt shoulder height, the motor is reversed to release the belt length required for the safety belt according to the driver's body information, and the released part is retracted by the retraction lower support with small retraction spring stiffness, so that the driver can easily complete the safety belt when the driver wears the safety belt, and the active retractor retraction spring stiffness is large, so that the contradiction between the safety belt restraint degree and the convenience of wearing the safety belt is solved. BRIEF DESCRIPTION OF DRAWINGS

[0037] Figure 1 The personalized driver sitting posture matching intelligent cabin overall structure schematic diagram is provided for the application.

[0038] Figure 2 The three-dimensional structure schematic diagram of the active seat system is provided for the application.

[0039] Figure 3 The installation position schematic diagram of the air bag adjusting device is provided for the application.

[0040] Figure 4 The three-dimensional structure schematic diagram of the air bag adjusting device is provided for the application.

[0041] Figure 5The internal structure of the airbag adjusting device according to the present application.

[0042] Figure 6 The internal structure of the air pressure transmission mechanism according to the present application.

[0043] Figure 7 The transmission diagram of the airbag adjusting device according to the present application.

[0044] Figure 8 The three-dimensional structure diagram of the active seat belt system according to the present application.

[0045] Figure 9 The three-dimensional structure diagram of the upper fulcrum adjusting device according to the present application.

[0046] Figure 10 The internal structure of the upper fulcrum adjusting device according to the present application.

[0047] Figure 11 The control method flow diagram according to the present application.

[0048] The annotations in the above diagram are as follows:

[0049] 1. Active seat system 2. Active seat belt system 3. Air pressure distribution system

[0050] 4. Tactile sensing airbag 5. Airbag adjusting device 6. Flexible tactile sensor

[0051] 7. Vehicle-mounted ECU 8. Seat skeleton 9. Foamed sponge 10. Airbag mounting belt

[0052] 11. Upper roller 12. Lower roller 13. Transmission piston 14. Side plate 15. Middle support

[0053] 16. First gear 17. Coil spring 18. Driving sleeve 19. Projection 20. Second gear

[0054] 21. Resistance spring 22. Air compressor 23. DC motor

[0055] 24. Exhaust solenoid valve and dryer 25. Control solenoid valve 26. Active retractor

[0056] 27. Upper fulcrum adjusting device 28. Retracting lower support 29. Safety belt 30. Base

[0057] 31. Slide rail 32. Slide block 33. Buckle 34. Fixed hole 35. Latch

[0058] 36. Electromagnet 37. Return spring. DETAILED DESCRIPTION

[0059] Referring to Figures 1 to 11 shown:

[0060] The application provides a personalized driver sitting posture matching intelligent cockpit based on tactile perception, which comprises an active seat system 1, an active safety belt system 2 and a gas pressure distribution system 3, wherein five tactile perception air bags 4 are arranged in the active seat system 1, three tactile perception air bags 4 are arranged at the left, middle and right positions of the driver's waist on the seat back, two tactile perception air bags 4 are arranged at the positions close to the driver's legs on the two sides of the seat base, an air bag adjusting device 5 is arranged on the tactile perception air bag 4 in the middle of the seat back, a flexible tactile sensor 6 is arranged on each of the five tactile perception air bags 4, the air bag adjusting device 5 and the five tactile perception air bags 4 are connected with the gas pressure distribution system 3, the gas pressure distribution system 3 provides power for the air bag adjusting device 5 and inputs gas into the five tactile perception air bags 4, the flexible tactile sensor 6 arranged on the five tactile perception air bags 4 and the gas pressure distribution system 3 are connected with a vehicle-mounted ECU 7, the five flexible tactile sensors 6 can transmit the collected data to the vehicle-mounted ECU 7 in real time, the vehicle-mounted ECU 7 controls the gas pressure distribution system 3 to input gas into the five tactile perception air bags 4 according to the transmission data of the five flexible tactile sensors 6, and the active safety belt system 2 is also connected with the vehicle-mounted ECU 7 and is controlled to work by the vehicle-mounted ECU 7.

[0061] The airbag adjusting device 5 is connected to the seat frame 8 through the bracket ear, the airbag adjusting device 5 is covered by the seat foaming sponge 9, the airbag adjusting device 5 comprises an airbag mounting belt 10, an upper roller 11, a lower roller 12 and a transmission piston 13, wherein the two ends of the upper roller 11 and the lower roller 12 are pivotally connected to two side plates 14 through bearings, the airbag mounting belt 10 is wound on the upper roller 11 and the lower roller 12, the tactile perception airbag 4 in the middle of the driver's waist of the seat backrest is assembled on the airbag mounting belt 10, the upper roller 11 and the lower roller 12 can drive the airbag mounting belt 10 and the tactile perception airbag 4 to move during rotation, so as to adjust the position of the tactile perception airbag 4, the two side plates between the upper roller 11 and the lower roller 12 are further provided with a middle bracket 15, the top end of the middle bracket 15 is pivotally connected with a first gear 16, the left end of the first gear 16 is coaxially provided with a coil spring 17, the right end of the first gear 16 is coaxially fixedly connected with a driving sleeve 18, the driving sleeve 18 is provided with a roller pin, the transmission piston 13 is assembled in a sliding groove at the bottom of the middle bracket 15, the transmission piston 13 can move left and right along the sliding groove, the head end of the transmission piston 13 is provided with a protrusion 19, the roller pin above the driving sleeve 18 coaxially fixedly connected with the first gear 16 can be fitted with the protrusion 19 at the head end of the transmission piston 13, the transmission piston 13 can drive the first gear 16 to rotate through the driving sleeve 18 during left and right movement, the roller pin above the driving sleeve 18 is always kept in a fitted state with the protrusion 19 at the head end of the transmission piston 13 through the coil spring 17 at the left end of the first gear 16 driving the driving sleeve 18, the upper roller 11 is composed of two rollers, a second gear 20 is assembled on the center shaft in the gap between the two rollers, the first gear 16 at the top end of the middle bracket 15 is engaged with the second gear 20, the second gear 20 is synchronously rotated by the first gear 16 during rotation, so as to move the upper roller 11, the airbag mounting belt 10 and the lower roller 12 to adjust the position of the tactile perception airbag 4 on the airbag mounting belt 10, the resistance spring 21 is sleeved on the connecting rod at the rear of the transmission piston 13 to control the stroke of the transmission piston 13, the rear end of the transmission piston 13 is connected with the air pressure distribution system 3 through a pipeline, the air pressure distribution system 3 provides pressure gas to drive the transmission piston 13 to move left and right.

[0062] The air pressure distribution system 3 comprises an air compressor 22, a direct current motor 23, an exhaust electromagnetic valve and a dryer 24 and control electromagnetic valves 25, wherein the air compressor 22, the exhaust electromagnetic valve and the dryer 24 and the control electromagnetic valves 25 are connected in series through pipelines, the control electromagnetic valves 25 are assembled in parallel with six, the six control electromagnetic valves 25 control the gas pipelines of the five tactile perception air bags 4 and the air bag adjusting devices 5 respectively, the direct current motor 23 is connected with the air compressor 22 and controls the working of the air compressor 22, the direct current motor 23, the exhaust electromagnetic valve and the dryer 24 and the control electromagnetic valves 25 are connected with the vehicle-mounted ECU 7, the vehicle-mounted ECU 7 controls the working of the direct current motor 23, the control electromagnetic valves 25 and the exhaust electromagnetic valve and the dryer 24 according to the transmission data of the flexible tactile sensor 6 arranged on the five tactile perception air bags 4 respectively.

[0063] The active safety belt system 2 comprises an active retractor 26, an upper pivot adjusting device 27 and a retraction lower support 28, wherein the safety belt 29 is arranged in the active retractor 26, the active retractor 26, the upper pivot adjusting device 27 and the retraction lower support 28 are connected through the safety belt 29, the upper pivot adjusting device 27 is fixed above the B column of the vehicle body, the active retractor 26 is fixed below the B column of the vehicle body, the retraction lower support 28 is fixed on the floor of the vehicle body, one end of the safety belt 29 is fixed to the reel of the active retractor 26, the other end of the safety belt 29 is fixed to the reel of the retraction lower support 28 through the buckle 33 of the upper pivot adjusting device 27, the active retractor 26 is assembled with a belt length sensor and a driving motor, the belt length sensor and the driving motor are connected with the vehicle-mounted ECU 7, the belt length sensor in the active retractor 26 can transmit the collected data to the vehicle-mounted ECU 7 in real time, and the vehicle-mounted ECU 7 controls the working of the driving motor assembled in the active retractor 26 according to the transmission data.

[0064] The upper supporting point adjusting device 27 comprises a base 30, a sliding rail 31 and a sliding block 32, wherein the rear part of the base 30 is fixed above the B column of the vehicle body, the bottom of the sliding rail 31 is fixed in the open front part of the base 30, the sliding block 32 is sleeved on the sliding rail 31 and can slide along the sliding rail 31, the front cover of the sliding block 32 is connected with the buckle 33 of the safety belt 29, the safety belt 29 is inserted in the buckle 33, and the safety belt 29 can be elongated or contracted along with the sliding of the sliding block 32, a plurality of fixing holes 34 are equidistantly formed on the sliding rail 31, the sliding block 32 is equipped with a latch 35 at the position corresponding to the fixing hole 34, the rear part of the latch 35 is connected with an electromagnet 36, the electromagnet 36 can drive the latch 35 to enter or pull out of the fixing hole 34 on the sliding rail 31, the electromagnet 36 is connected with the vehicle-mounted ECU 7, the vehicle-mounted ECU 7 controls the power-on and power-off of the electromagnet 36 according to the data transmitted by the belt length sensor in the active retractor 26, so as to control the insertion and pulling out of the latch 35 in the fixing hole 34, and the bottom plate of the base 30 under the sliding block 32 is symmetrically equipped with two return springs 37 on both sides of the sliding rail 31, and the return of the safety belt 29 connected with the sliding block 32 and the rebound of the return spring 37 drive the sliding block 32 to slide up and down along the sliding rail 31.

[0065] The flexible tactile sensor 6, the vehicle-mounted ECU 7, the air compressor 22, the direct-current motor 23, the exhaust electromagnetic valve and the dryer 24, the control electromagnetic valve 25, the sensor, the driving motor, the electromagnet 36 and the limit sensor are all assembled from existing devices, therefore, the specific model and specification are not described in detail.

[0066] The control method for the personalized driver sitting posture matching intelligent cabin based on tactile perception provided by the application comprises the following steps:

[0067] Step one, first, the driver sits down, the tactile perception air bag 4 obtains the driver sitting posture information through the flexible tactile sensor 6 on the surface, and transmits the data to the vehicle-mounted ECU 7, and the vehicle-mounted ECU 7 respectively instructs the air pressure distribution system 3 and the active retractor 26 to work according to the driver sitting posture information;

[0068] Step two, secondly, the air pressure distribution system 3 respectively adjusts the air pressure of the air bag adjusting device 5 at the middle position between the driver's waist under the control of the vehicle-mounted ECU 7, so that the air bag thickness and the waist support air bag position are changed, and then the guiding and early warning, the matching sitting posture function and the matching waist height function are smoothly realized;

[0069] Step three, at the same time, the active retractor 26 retracts or releases the safety belt 29 under the control of the vehicle-mounted ECU 7, drives the upper supporting point adjusting device 27 to move up and down, and then the matching shoulder height function is smoothly realized, and then the active retractor 26 releases the safety belt 29 to the required length under the control of the vehicle-mounted ECU 7, and the matching belt length function is realized;

[0070] Step four: Finally, by matching the sitting posture, waist height, shoulder height and belt length, the driver obtains the corresponding comfort, and the driver further changes the sitting posture according to the comfort to form a negative feedback.

[0071] The working principle of the application is as follows:

[0072] The five touch perception air bags 4 are installed on the seat waist and side wings of the active seat system 1 in the personalized driver sitting posture matching intelligent cockpit and control method based on touch perception, and the air bag adjusting device 5 is installed on the touch perception air bag 4 in the middle of the seat back. The air bag adjusting device 5 and the other five touch perception air bags 4 are connected with the gas pressure distribution system 3 through gas conduits. The required gas pressure of the air bag adjusting device 5 and the touch perception air bag 4 is provided by the gas pressure distribution system 3. When the driver sits in the active seat system 1 during operation, the flexible touch sensor 6 covering the touch perception air bag 4 receives a pressure signal, preliminarily determines the driver's body type, and transmits the sitting posture information to the vehicle-mounted ECU 7. When it is necessary to increase the air pressure of the air bag, the vehicle-mounted ECU 7 controls the air compressor 22 to compress air by driving the direct current motor 23 in the gas pressure distribution system 3, and controls the corresponding control electromagnetic valve 25 to open, so that the compressed gas enters the corresponding touch perception air bag 4 through the closed exhaust electromagnetic valve and the dryer 24 and the opened corresponding control electromagnetic valve 25, realizes the increase of the air pressure of the touch perception air bag 4, and further increases the thickness of the touch perception air bag 4. When it is necessary to reduce the air pressure of the touch perception air bag 4, the vehicle-mounted ECU 7 controls the corresponding control electromagnetic valve 25 to open, and controls the exhaust electromagnetic valve in the exhaust electromagnetic valve and the dryer 24 to open, so that the compressed gas in the touch perception air bag 4 is discharged into the atmosphere through the opened corresponding control electromagnetic valve 25 and the opened exhaust electromagnetic valve and the dryer 24, realizes the reduction of the air pressure of the touch perception air bag 4, and further reduces the thickness of the touch perception air bag 4.

[0073] In addition, the flexible touch sensor 6 laid on the surface of the touch perception air bag 4 collects the driver's sitting posture information in real time and transmits it to the vehicle-mounted ECU 7, so as to control the gas pressure distribution system 3 to change the thickness of the touch perception air bag 4, form a negative feedback line, and realize the function of matching the sitting posture, so as to ensure that the softness and flexibility of the seat are moderate and the flexible touch sensor 6 wraps the driver;

[0074] When the working conditions such as bumping, acceleration and deceleration, uphill and downhill or turning occur, the feedback line will make the touch perception air bag 4 change in time to complete the adjustment of the driver's sitting posture. When the functions such as guidance and early warning are implemented, with the help of the gas pressure distribution system 3, the touch perception air bag 4 can realize the rapid increase of the pressure change frequency to provide clear and rapid feedback touch signals;

[0075] When the driver is seated, the haptic perception air bag 4 is moved up and down by changing the air pressure in the air bag adjusting device 5 to make the pressure peak signal received by the flexible touch sensor 6 covering the haptic perception air bag 4 be in the middle position of the haptic perception air bag 4, so as to ensure that the lumbar support perfectly fits the driver's sitting posture and the flexible touch sensor 6 always receives sensitive and reliable peak signals.

[0076] The lumbar support stroke is designed according to the difference of 111 mm between the elbow height of the first 1% of male sitting posture 312 mm and the elbow height of the first 1% of female sitting posture 201 mm according to the statistics of Society of Automotive Ergonomics Application (SAEA), and the specific parameter design values of the transmission chain are as follows:

[0077] Gear transmission ratio Gear angle Angle between the bottom surface of the protrusion 19 on the transmission piston 13 and the horizontal surface Swing angle of the driving sleeve 18 Gear center distance Roller needle length of the driving sleeve 18 Width of the protrusion 19 on the transmission piston 13 Height of the protrusion 19 on the transmission piston 13 Rotating diameter of the driving sleeve 18 Radius of the upper roller 11 Therefore, the lumbar support stroke is obtained .

[0078] The upper support point of the active safety belt system 2 is provided with an upper support point adjusting device 27, the upper support point adjusting device 27 is fixed above the B column of the vehicle body, the active retractor 26 is fixed below the B column of the vehicle body, the retraction lower support 28 is fixed on the floor of the vehicle body, one end of the safety belt 29 is fixed to the reel shaft of the active retractor 26, the safety belt 29 passes through the buckle 33 of the upper support point adjusting device 27, and the other end of the safety belt 29 is fixed with the reel shaft of the retraction lower support 28.

[0079] The base 30 of the upper fulcrum adjusting device 27 is fixed to the vehicle body. The slide rail 31 in the upper fulcrum adjusting device 27 is of the SBR30S-250L type, and a total of seven holes are drilled every 27 mm in the radial direction of the parallel bottom surface (the difference between the shoulder height of the male front 1% sitting position of 659 mm and the shoulder height of the female rear 1% sitting position of 504 mm according to the statistics of the Society of Automotive Ergonomics (SAEA) is 155 mm, and the length of the center line of the circular hole is defined as the upper fulcrum stroke of 162 mm). The slider 32 is improved from the SBR30UU, wherein an arc-shaped housing at the cooperation position with the slide rail 31 is drilled with two fixed holes 34 every 27 mm in the radial direction of the parallel bottom surface. A pair of pull-type electromagnets 36 are fixed inside the slider 32, and the pair of pull-type electromagnets 36 are separated on both sides of the arc-shaped housing at the cooperation position with the slide rail 31. The latch 35 of the pull-type electromagnet 36 can be fixed with the fixed hole 34 of the cooperation surface of the slider 32 and the slide rail 31, and the latch 35 of the pull-type electromagnet 36 is always at the maximum stroke position and cooperates with the fixed hole 34 of the slide rail 31 under the action of the compression spring inside the pull-type electromagnet 36. The front end cover of the slider 32 is fixed with the buckle 33 of the safety belt 29.

[0080] When the upper fulcrum adjusting device 27 is not working, i.e., the upper fulcrum is fixed, the pull-type electromagnet 36 is not powered. At this time, the latch 35 of the pull-type electromagnet 36 is at the maximum stroke position under the action of the compression spring inside the pull-type electromagnet 36, i.e., cooperates with the fixed hole 34 of the slide rail 31. Therefore, the slider 32 where the upper fulcrum is located is always in a limited state, which ensures safety under power failure.

[0081] When the upper fulcrum adjusting device 27 starts to work, i.e., the upper fulcrum starts to move, the pull-type electromagnet 36 is powered on. At this time, the electromagnetic force of the pull-type electromagnet 36 attracting the latch 35 is greater than the internal compression spring thrust, which drives the latch 35 to separate from the fixed hole 34 of the slide rail 31. At this time, the slider 32 where the upper fulcrum is located loses the fixation and can move up and down along the slide rail 31 under the joint action of the upward thrust of the return spring 37 and the downward force of the motor of the active retractor 26 on the buckle 33 of the front end cover of the slider 32 through the safety belt 29.

[0082] When the upper fulcrum is about to move to the predetermined stroke, the pull-type electromagnet 36 is disconnected, and the electromagnetic force disappears. Under the action of the internal compression spring, the latch 35 of the pull-type electromagnet 36 abuts against the slide rail groove. After the latch 35 is inserted into the fixed hole 34 along the groove on the slide rail 31 and returns to the cooperation state with the fixed hole 34 of the slide rail 31, the motor stops retraction or release, and then the limit is realized, so that the upper fulcrum is fixed again.

[0083] In the process of active safety belt system 2 working, after the vehicle-mounted ECU 7 receives the driver's sitting posture information, the active retractor 26 starts to roll up the safety belt 29, and after the inside belt length sensor of the active retractor 26 detects that the safety belt 29 inside the lower support 28 is all released, i.e. the safety belt 29 inside the active retractor 26 is all rolled up, at this time the pull-type electromagnet 36 in the upper support point adjusting device 27 is turned on, under the action of electromagnetic force, the latch 35 of the pull-type electromagnet 36 is pulled back from the fixed hole 34 on the slide rail 31, thereby releasing the fixation of the sliding block 32, and the sliding block 32 starts to move up and down along the slide rail 31 under the joint action of the downward pulling force of the safety belt 29 buckle 33 on the upper support point sliding block 32 formed by the motor torque of the active retractor 26 through the safety belt 29 and the upward pushing force of the return spring 37, to the driver's sitting posture shoulder height calculated according to the driver's body information measured by the vehicle-mounted ECU 7 through the flexible touch sensor 6, and then the upper support point is fixed.

[0084] After the upper support point is fixed, the active retractor 26 starts to release the safety belt 29 to the required belt length calculated according to the driver's body information measured by the vehicle-mounted ECU 7 through the flexible touch sensor 6, and at the same time the lower support 28 starts to roll up the released safety belt 29, because the rolling spring stiffness of the lower support 28 is much smaller than that of the active retractor 26, when the driver wears the safety belt 29, it can overcome smaller resistance, and wear the safety belt 29 easily with certain force feedback, and after the safety belt 29 is worn, the pulling force of the safety belt 29 is completely provided by the active retractor 26, at this time the resistance is larger, so that the driver has a wrapping and safety feeling, and further balances the contradiction between the restraint degree of the safety belt 29 and the convenience of wearing the safety belt 29.

Claims

1. A driver posture matching intelligent cockpit based on tactile perception, comprising an active seat system, an active safety belt system and a gas pressure distribution system, wherein five tactile perception airbags are installed in the active seat system, three tactile perception airbags are installed on the left, middle and right positions of the seat backrest corresponding to the driver's waist, two tactile perception airbags are installed on both sides of the seat base near the driver's legs, an airbag adjusting device is installed on the tactile perception airbag in the middle of the seat backrest, a flexible tactile sensor is installed on each of the five tactile perception airbags, the airbag adjusting device and the five tactile perception airbags are connected with the gas pressure distribution system, the gas pressure distribution system provides power for the airbag adjusting device and inputs gas into the five tactile perception airbags, the flexible tactile sensors installed on the five tactile perception airbags and the gas pressure distribution system are connected with the vehicle ECU, the five flexible tactile sensors can transmit the collected data to the vehicle ECU in real time, the vehicle ECU controls the gas pressure distribution system to input gas into the five tactile perception airbags according to the transmission data of the five flexible tactile sensors, and the active safety belt system is connected with the vehicle ECU and is controlled by the vehicle ECU to work, characterized in that: The airbag adjusting device is connected to the seat frame through the bracket ear, and is covered by the seat foaming sponge. The airbag adjusting device comprises an airbag mounting belt, an upper roller, a lower roller and a transmission piston. The two ends of the upper roller and the lower roller are pivotally connected to two side plates through bearings. The airbag mounting belt is arranged around the upper roller and the lower roller. A haptic perception airbag in the middle of the driver's waist on the seat backrest is arranged on the airbag mounting belt. The upper roller and the lower roller can drive the airbag mounting belt and the haptic perception airbag to move during rotation, so as to adjust the position of the haptic perception airbag. The two side plates between the upper roller and the lower roller are further provided with a middle support. The top end of the middle support is pivotally connected with a first gear. The left end of the first gear is coaxially provided with a coil spring. The right end of the first gear is coaxially fixedly connected with a driving sleeve. The driving sleeve is provided with a roller pin. The transmission piston is arranged in a sliding groove at the bottom of the middle support. The transmission piston can move left and right along the sliding groove. The head end of the transmission piston is provided with a protrusion. The roller pin on the driving sleeve coaxially fixedly connected with the first gear can be attached to the protrusion at the head end of the transmission piston. The transmission piston can drive the first gear to rotate during left and right movement through the driving sleeve. The roller pin on the driving sleeve coaxially fixedly connected with the first gear can always be attached to the protrusion at the head end of the transmission piston through the coil spring at the left end of the first gear. The upper roller is composed of two rollers. A second gear is arranged on the center shaft in the gap between the two rollers. The first gear at the top end of the middle support is engaged with the second gear. The first gear drives the second gear to rotate synchronously during rotation, so as to move the upper roller, the airbag mounting belt and the lower roller, and adjust the position of the haptic perception airbag on the airbag mounting belt. A resistance spring is arranged on the connecting rod at the rear of the transmission piston to control the stroke of the transmission piston. The rear end of the transmission piston is connected to a gas pressure distribution system through a pipeline. The gas pressure distribution system provides pressure gas to drive the transmission piston to move left and right. The gas pressure distribution system comprises an air compressor, a DC motor, an exhaust electromagnetic valve, a dryer and a control electromagnetic valve. The air compressor, the exhaust electromagnetic valve, the dryer and the control electromagnetic valve are connected in series through pipelines. Six control electromagnetic valves are arranged side by side. The six control electromagnetic valves control five haptic perception airbags and the gas pipeline of the airbag adjusting device respectively. The DC motor is connected to the air compressor and controls the operation of the air compressor. The DC motor, the exhaust electromagnetic valve, the dryer and the control electromagnetic valve are connected to the vehicle ECU. The vehicle ECU controls the operation of the DC motor, the control electromagnetic valve, the exhaust electromagnetic valve and the dryer according to the transmission data of the flexible touch sensor arranged on the five haptic perception airbags.The active safety belt system comprises an active retractor, an upper anchor point adjusting device and a retraction lower support, wherein the safety belt is arranged in the active retractor, the active retractor, the upper anchor point adjusting device and the retraction lower support are connected through the safety belt, the upper anchor point adjusting device is fixed above the B column of the vehicle body, the active retractor is fixed below the B column of the vehicle body, the retraction lower support is fixed on the floor of the vehicle body, one end of the safety belt is fixed to the reel of the active retractor, the other end of the safety belt is fixed to the reel of the retraction lower support through the buckle of the upper anchor point adjusting device, the active retractor is provided with a belt length sensor and a driving motor, the belt length sensor and the driving motor are connected with the vehicle-mounted ECU, the belt length sensor in the active retractor can transmit the collected data to the vehicle-mounted ECU in real time, and the vehicle-mounted ECU controls the working of the driving motor provided in the active retractor according to the transmitted data; the upper anchor point adjusting device comprises a base, a sliding rail and a sliding block, wherein the rear part of the base is fixed above the B column of the vehicle body, the bottom of the sliding rail is fixed in the open front of the base, the sliding block is sleeved on the sliding rail, the sliding block can slide along the sliding rail, the buckle of the safety belt is connected to the front cover of the sliding block, the safety belt is inserted in the buckle, a plurality of fixing holes are equidistantly arranged on the sliding rail, the sliding block is provided with a latch corresponding to the position of the fixing hole, the latch is connected with an electromagnet at the rear part, the electromagnet can drive the latch to enter or pull out the fixing hole on the sliding rail, the electromagnet is connected with the vehicle-mounted ECU, the vehicle-mounted ECU controls the power-on and power-off of the electromagnet to control the insertion and pulling-out of the latch in the fixing hole according to the data transmitted by the belt length sensor in the active retractor, and two return springs are symmetrically arranged on the bottom plate of the lower base of the sliding block on both sides of the sliding rail, the return of the safety belt connected to the sliding block and the rebound of the return spring drive the sliding block to slide up and down along the sliding rail.

2. The control method of the driver posture matching intelligent cabin based on tactile perception according to claim 1, characterized in that: The method comprises the following steps: Step one, first, the driver is seated, the driver's sitting posture information is obtained by the flexible tactile sensor covered on the surface of the tactile perception air bag, and the data is transmitted to the vehicle-mounted ECU. The vehicle-mounted ECU instructs the air pressure distribution system and the active retractor to work according to the driver's sitting posture information; Step two, secondly, the air pressure distribution system adjusts the air pressure of the air bag adjusting device at the middle position between the tactile perception air bag and the driver's waist under the control of the vehicle-mounted ECU, so that the thickness of the air bag and the position of the waist supporting air bag are changed, and then the guiding and early warning, the matching sitting posture function and the matching waist height function are smoothly realized; Step three, at the same time, the active retractor retracts or releases the safety belt under the control of the vehicle-mounted ECU, drives the upper support point adjusting device to move up and down, and then the matching shoulder height function is smoothly realized. Then, the active retractor releases the safety belt to the required length under the control of the vehicle-mounted ECU, and the matching belt length function is realized; Step four: finally, the driver obtains the corresponding comfort by matching the sitting posture, waist height, shoulder height and belt length, and the driver further changes the sitting posture according to the comfort to form a negative feedback.

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