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CN-122009199-A - Automobile steering wheel with fatigue driving monitoring function

CN122009199ACN 122009199 ACN122009199 ACN 122009199ACN-122009199-A

Abstract

The invention belongs to the technical field of automobile steering wheels, in particular to an automobile steering wheel with a fatigue driving monitoring function, which comprises a steering wheel rim, wherein a plurality of independent cavities are arranged in the steering wheel rim, a fatigue monitoring device is arranged in the steering wheel rim, the fatigue monitoring device comprises a pressure data conversion module and a plurality of miniature pressure sensors, the miniature pressure sensors are electrically connected with the pressure data conversion module and are respectively and correspondingly arranged in the independent cavities, and a steering detection module is arranged in an automobile machine and is used for detecting steering behavior characteristics of the steering wheel rim.

Inventors

  • LV KEZHEN
  • DU ZHENGXIN
  • TANG DIDI
  • CHENG YONGSHUN
  • JI XU

Assignees

  • 临朐弘泰汽车配件有限公司

Dates

Publication Date
20260512
Application Date
20260403

Claims (10)

  1. 1. An automobile steering wheel with fatigue driving monitoring function, comprising: a steering wheel rim (1) having a plurality of independent chambers (11) disposed therein; The fatigue monitoring device (2) comprises a pressure data conversion module and a plurality of miniature pressure sensors (23), wherein the miniature pressure sensors (23) are electrically connected with the pressure data conversion module and are respectively and correspondingly arranged in each independent chamber (11); The steering detection module is arranged in the vehicle and is used for detecting steering behavior characteristics of the steering wheel rim (1); The sign detection bracelet is electrically connected with the intelligent vehicle and is used for collecting heart rate, heart rate variability and blood oxygen saturation of a driver; The fatigue analysis module is respectively and electrically connected with the fatigue monitoring device (2), the steering detection module, the sign detection bracelet and the intelligent vehicle and is used for receiving and processing data signals of all modules, and the fatigue analysis module can switch the priority of the data of all modules according to driving scenes and environmental temperature; The early warning feedback device (3) is embedded in the steering wheel rim (1) and is electrically connected with the intelligent vehicle; the vehicle-mounted device comprises a vehicle-mounted device stress intervention module, wherein the vehicle-mounted device stress intervention module is respectively and electrically connected with the fatigue analysis module and the intelligent vehicle-mounted device.
  2. 2. An automotive steering wheel with fatigue driving monitoring function according to claim 1, characterized in that the fatigue monitoring device (2) further comprises: A touch sensing layer (21), wherein the touch sensing layer (21) is made of elastic materials and is fixedly connected to the outer surface of the steering wheel rim (1); the double-diaphragm conversion layer (22) is arranged right below the touch sensing layer (21) and fixedly connected to one outward end of the independent cavity (11), and the double-diaphragm conversion layer (22) is composed of an upper metal film or a lower metal film with specific rigidity or a high polymer film; The hydraulic oil chamber (24) is arranged at the bottom of the independent chamber (11), and the inside of the hydraulic oil chamber (24) is filled with vehicle-mounted special hydraulic oil; The pressure transmission mechanism (25), the pressure transmission mechanism (25) comprises piston blocks (251) and springs (252) which are slidably connected in the hydraulic oil chamber (24), the piston blocks (251) are radially distributed along the steering wheel rim (1), one end, close to the double-diaphragm conversion layer (22), of each piston block (251) is attached to hydraulic oil, one end, far from the double-diaphragm conversion layer (22), of each piston block is fixedly connected with the miniature pressure sensor (23), the springs (252) are sleeved on the outer side of the miniature pressure sensor (23), and two ends of each piston block (251) are fixedly connected with the bottom of the hydraulic oil chamber (24); And the data recording module is electrically connected with the miniature pressure sensor (23).
  3. 3. The steering wheel with the fatigue driving monitoring function according to claim 2, wherein the number of the independent chambers (11) is 8, the independent chambers (11) are uniformly distributed in the steering wheel rim (1) in a ring shape, the independent chambers (11) are fan-shaped and respectively correspond to a thumb area, an index finger area, a little finger area and a palm center area of a driver hand, and each independent chamber (11) is correspondingly provided with a hydraulic oil chamber (24), a piston block (251), a double-diaphragm conversion layer (22) and a miniature pressure sensor (23).
  4. 4. The automobile steering wheel with the fatigue driving monitoring function according to claim 1, wherein the sign detection bracelet comprises a sign acquisition module, a Bluetooth transmission module, an abnormal self-checking module and a vehicle-mounted power supply interface, wherein the Bluetooth transmission module adopts an electromagnetic interference resistant Bluetooth version 5.2, and the transmission delay is less than or equal to 10ms.
  5. 5. The automobile steering wheel with the fatigue driving monitoring function according to claim 1, wherein the fatigue analysis module is used for judging the degree of fatigue and is divided into mild fatigue, moderate fatigue and severe fatigue, and a multi-module data fusion calibration mechanism is arranged in the fatigue analysis module.
  6. 6. The automobile steering wheel with the fatigue driving monitoring function according to claim 1, wherein the early warning feedback device (3) comprises a small eccentric vibration motor (31), an air cooling module and a micro-current magnetic pole module (32), and the small eccentric vibration motor (31), the air cooling module and the micro-current magnetic pole module (32) can be started singly or in combination.
  7. 7. The automobile steering wheel with the fatigue driving monitoring function according to claim 6, wherein the air cooling module is electrically connected with the automobile air conditioning module, and the small eccentric vibration motor (31) and the micro-current magnetic pole module (32) are embedded and arranged inside the steering wheel rim (1) corresponding to each independent cavity (11).
  8. 8. The automobile steering wheel with the fatigue driving monitoring function according to claim 1, wherein after the stress judgment condition of the automobile stress intervention module is that the early warning feedback device (3) is started, the steering detection module detects that the steering angle mutation of the steering wheel rim (1) is not less than 45 degrees/s and the steering angular velocity is abnormal, and meanwhile, the sign detection bracelet detects that the heart rate is not less than 120 times/min.
  9. 9. The automobile steering wheel with the fatigue driving monitoring function according to claim 2, wherein the hydraulic oil chamber (24) adopts an oil-resistant rubber sealing structure, the hydraulic oil is low-temperature wear-resistant and can work within a range of-40 ℃ to 125 ℃, a wear-resistant coating is arranged on the surface of the piston block (251), the spring (252) is a high-temperature resistant spring, and the metal or polymer film of the double-diaphragm conversion layer (22) adopts an anti-aging and anti-deformation material.
  10. 10. The automobile steering wheel with the fatigue driving monitoring function according to claim 1, wherein the fatigue analysis module is internally provided with a data storage unit and a data encryption module, and the data encryption module adopts an AES-128 encryption algorithm.

Description

Automobile steering wheel with fatigue driving monitoring function Technical Field The invention belongs to the technical field of automobile steering wheels, and particularly relates to an automobile steering wheel with a fatigue driving monitoring function. Background Along with the rapid development of intelligent and active safety technologies of automobiles, fatigue driving of drivers has become an important factor for causing traffic accidents, and the demands for a vehicle-mounted fatigue monitoring device with real-time monitoring, accurate identification, stability and reliability are increasingly urgent. Particularly, under the high-speed, urban road and high-low temperature complex working conditions, an integrated monitoring scheme which can be used for fusing multisource signals, is adaptive to scene change and is sensitive in response is urgently needed, so that driving safety is improved. In order to improve driving safety, the existing vehicle enterprises have developed an automobile steering wheel with a fatigue driving monitoring function, different pressure data generated when a driver grasps the steering wheel in a fatigue state and a normal state and different steering data of the steering wheel are utilized for comparison, whether the driver is in the fatigue state is judged, finally early warning is carried out, the driver is kept awake, driving safety is improved, the existing automobile steering wheel with the fatigue driving monitoring function mostly adopts a single signal source or fixed weight judgment logic (such as hand pressure data or steering wheel steering data) and is easy to be interfered by environment and driving habit, the problems of false alarm and missing alarm exist, meanwhile, the response of a pressure detection structure is lagged and easy to be distorted, dangerous states cannot be captured in advance, and a grading early warning and emergency intervention mechanism is lacked, so that the high-precision and high-robustness monitoring requirement under a complex scene is difficult to be met. Most of the existing automobile steering wheels with the fatigue driving monitoring function adopt fixed data priority, and the priority of detection data cannot be adjusted in a self-adaptive mode according to different driving scenes such as high speed, cities, high temperature, low temperature and the like, so that the judgment of information such as grip pressure, steering behavior and the like is unbalanced under complex working conditions, and further the problems of misjudgment and missed judgment are caused. Disclosure of Invention In order to make up for the defects of the prior art, the invention provides the automobile steering wheel with the fatigue driving monitoring function. The method is mainly used for solving the problems that the existing automobile steering wheel with the fatigue driving monitoring function mostly adopts fixed data priority, and the priority judgment of detection data cannot be adaptively adjusted according to different driving scenes such as high speed, city, high temperature, low temperature and the like, so that the judgment of the information such as grip strength, steering behavior and the like is unbalanced under the complex working condition, and misjudgment and omission judgment are caused. The technical scheme adopted by the invention for solving the technical problems is that the automobile steering wheel with the fatigue driving monitoring function comprises the following components: A steering wheel rim having a plurality of independent chambers disposed therein; The fatigue monitoring device comprises a pressure data conversion module and a plurality of miniature pressure sensors, wherein the miniature pressure sensors are electrically connected with the pressure data conversion module and are respectively and correspondingly arranged in each independent cavity; The steering detection module is arranged in the vehicle and is used for detecting steering behavior characteristics of the steering wheel rim; The sign detection bracelet is electrically connected with the intelligent vehicle and is used for collecting heart rate, heart rate variability and blood oxygen saturation of a driver; The fatigue analysis module is electrically connected with the fatigue monitoring device, the steering detection module, the physical sign detection bracelet and the intelligent vehicle respectively and is used for receiving and processing data signals of all the modules, and the fatigue analysis module can switch the priority of the data of all the modules according to driving scenes and environmental temperature; The early warning feedback device is embedded and installed in the steering wheel rim and is electrically connected with the intelligent vehicle; the vehicle-mounted device comprises a vehicle-mounted device stress intervention module, wherein the vehicle-mounted device stress intervention module is respectively and electrically con