CN112477973A - Automobile steering wheel HOD, heating and vibration three-in-one module - Google Patents
Automobile steering wheel HOD, heating and vibration three-in-one module Download PDFInfo
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- CN112477973A CN112477973A CN202110040839.8A CN202110040839A CN112477973A CN 112477973 A CN112477973 A CN 112477973A CN 202110040839 A CN202110040839 A CN 202110040839A CN 112477973 A CN112477973 A CN 112477973A
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 106
- 238000004891 communication Methods 0.000 claims abstract description 21
- 238000013021 overheating Methods 0.000 claims abstract description 8
- 238000002955 isolation Methods 0.000 claims description 11
- 210000003127 knee Anatomy 0.000 claims description 4
- 238000012545 processing Methods 0.000 claims description 4
- 102100034112 Alkyldihydroxyacetonephosphate synthase, peroxisomal Human genes 0.000 claims 3
- 101000799143 Homo sapiens Alkyldihydroxyacetonephosphate synthase, peroxisomal Proteins 0.000 claims 3
- 238000000848 angular dependent Auger electron spectroscopy Methods 0.000 claims 3
- 238000001514 detection method Methods 0.000 abstract description 19
- 230000035484 reaction time Effects 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 239000010985 leather Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000009958 sewing Methods 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D1/00—Steering controls, i.e. means for initiating a change of direction of the vehicle
- B62D1/02—Steering controls, i.e. means for initiating a change of direction of the vehicle vehicle-mounted
- B62D1/04—Hand wheels
- B62D1/06—Rims, e.g. with heating means; Rim covers
- B62D1/065—Steering wheels with heating and ventilating means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q9/00—Arrangement or adaptation of signal devices not provided for in one of main groups B60Q1/00 - B60Q7/00, e.g. haptic signalling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Human Computer Interaction (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Steering Controls (AREA)
Abstract
The invention belongs to the technical field of application of an automobile steering system, and particularly discloses an automobile steering wheel HOD and heating and vibrating three-in-one module, which comprises an LIN communication module, a main control module, a heating module, an HOD module, a vibrating module and the like. The invention has the beneficial effects that: 1. the HOD designed based on the capacitive sensor can be used for HOD and heating by using the existing heating coil of the steering wheel, the steering wheel does not need to be modified or customized, and various driving gestures can be recognized; 2. the heating device has a heating function, can monitor safety parameters such as heating temperature, current and the like in real time, ensures that faults such as overheating or fuse burning cannot occur, and improves the driving safety level while improving the driving experience; 3. the method adopts a vibration prompt feedback mode, greatly improves the reaction time of the driver, can be used in a driving auxiliary system requiring high timeliness, such as lane departure early warning, driver fatigue detection and the like, and improves the driving safety level.
Description
Technical Field
The invention belongs to the technical field of application of automobile steering systems, and particularly relates to an automobile steering wheel HOD and heating and vibrating three-in-one module, which can warm a steering wheel in cold seasons, improve driving experience and driving safety, and can carry out most direct reminding feedback on a driver by vibration prompt of the steering wheel, thereby greatly improving the reaction time of the driver, and solving the problems that the reaction time is not timely enough and the driving safety is easy to occur because the driver is highly concentrated in attention and ignores acousto-optic alarm prompt in a vehicle sometimes in the driving process.
Background
With the development of science and technology, as an important part of a steering wheel in an automobile steering system, the steering wheel not only is a steering part, but also has more functions, such as sound control, constant-speed cruising, Bluetooth, a running computer and the like, which can be realized through the steering wheel.
The HOD (hand Off detection) function, i.e. the hands-Off detection function, is one of ADAS (advanced driving assistance systems) and is also a requirement of the automatic driving system of the L1-L4 automobile, and the HOD is gradually being emphasized by more and more whole automobile factories.
The problems of the existing hod (hand Off detection) function are: 1. the heating and HOD detection range is limited by adopting an infrared and pressure detection mode, and the existing steering wheel needs to be modified or customized, so that although the cost of parts can be reduced, the cost of modifying the steering wheel is far beyond the reduced cost; 2. at present, the number of steering wheels with heating functions in the market is small, the functions are single, and the three-in-one functions of HOD, heating and vibration are almost not realized; 3. the problem of response time delay exists in an acousto-optic warning mode, the application of the driving auxiliary system needing quick response time in lane departure early warning, driver fatigue detection and the like is realized, and when the attention of a driver for driving a vehicle is not concentrated enough, the driving safety problem is easy to occur.
Based on the above problems, the present invention provides a three-in-one module for steering wheel HOD, heating and vibration of an automobile.
Disclosure of Invention
The purpose of the invention is as follows: the invention aims to provide a three-in-one module for HOD (steering wheel of an automobile) and heating and vibrating, which is reasonable in design, low in cost and high in performance based on a capacitive sensor, can directly and accurately judge the state of the steering wheel held by the Driver and various operation gestures, and can be used as a module with heating and vibrating functions, and the module can be applied to advanced System applications of ADAS (advanced Driver fatigue detection), Lane Keeping Systems (LKS), Lane departure warning and the like.
The technical scheme is as follows: the invention provides an automobile steering wheel HOD and heating and vibrating three-in-one module, which comprises an LIN communication module, a main control module, a heating module, an HOD module and a vibrating module, wherein the LIN communication module is connected with the main control module; the LIN communication module, the heating module, the HOD module and the vibration module are respectively connected with the main control module, wherein the heating module, the HOD module and the vibration module are all installed on the steering wheel.
According to the technical scheme, the main control module receives HOD, heating, vibration configuration and control information of an ADAS system through an LIN communication module, and feeds back HOD state, heating state and vibration state information through the LIN communication module; the main control module realizes a heating function by controlling the heating module, and acquires heating temperature and heating current information at regular time, so as to avoid overheating or overcurrent fault during heating; the main control module realizes the HOD function through the HOD module, and after internal data and algorithm processing, the state and the gesture of a current driver holding a steering wheel of the ADAS system can be fed back through the LIN communication module; the main control module realizes a vibration function through the vibration module, receives an ADAS command from the LIN bus, performs vibration feedback in real time, and monitors open-circuit and short-circuit faults of the vibration motor.
This technical scheme, car steering wheel HOD, heating and the trinity module of vibration still include the isolation selection circuit who is connected with heating module, HOD module respectively, and the steering wheel heater strip cooperatees with the isolation selection circuit and is connected the use.
According to the technical scheme, the upper and lower regions of the heating wires of the steering wheel are distributed and are matched with the isolation selection circuit and the HOD module for use, and gesture recognition of single fingers, double fingers, multiple fingers, single hand, double hands and knees is achieved.
Compared with the prior art, the automobile steering wheel HOD, heating and vibration three-in-one module has the beneficial effects that: 1. the HOD designed based on the capacitive sensor can be used for HOD and heating by using the existing heating coil of the steering wheel, the steering wheel does not need to be modified or customized, and various driving gestures can be recognized; 2. the heating device has a heating function, can monitor safety parameters such as heating temperature, current and the like in real time, ensures that faults such as overheating or fuse burning cannot occur, and improves the driving safety level while improving the driving experience; 3. the method adopts a vibration prompt feedback mode, greatly improves the reaction time of the driver, can be used in a driving auxiliary system requiring high timeliness, such as lane departure early warning, driver fatigue detection and the like, and improves the driving safety level.
Drawings
FIG. 1 is a block diagram of a modular system of a vehicle steering wheel HOD, heating and vibration triad module of the present invention;
FIG. 2 is a block diagram of an automobile steering wheel HOD, a heating module of a heating and vibration three-in-one module, an HOD module, an isolation selection circuit and a steering wheel heating wire of the invention.
Detailed Description
The invention is further elucidated with reference to the drawings and the embodiments.
The automobile steering wheel HOD and heating and vibrating three-in-one module shown in fig. 1 and 2 comprises a LIN communication module, a main control module, a heating module, an HOD module and a vibrating module; the LIN communication module, the heating module, the HOD module and the vibration module are respectively connected with the main control module, wherein the heating module, the HOD module and the vibration module are all installed on the steering wheel.
Further preferably, the main control module receives HOD, heating, vibration configuration and control information of the ADAS system through the LIN communication module, and feeds back HOD state, heating state and vibration state information through the LIN communication module; the main control module realizes a heating function by controlling the heating module, and acquires heating temperature and heating current information at regular time, so as to avoid overheating or overcurrent fault during heating; the main control module realizes the HOD function through the HOD module, and after internal data and algorithm processing, the state and the gesture of a current driver holding a steering wheel of the ADAS system can be fed back through the LIN communication module; the main control module realizes a vibration function through the vibration module, receives an ADAS command from the LIN bus, performs vibration feedback in real time, and monitors open-circuit and short-circuit faults of the vibration motor.
Further preferred, car steering wheel HOD, heating and the trinity module of vibration still include the isolation selection circuit who is connected with heating module, HOD module respectively, and the steering wheel heater strip cooperatees with the isolation selection circuit and is connected the use.
Further preferably, the steering wheel heating wires are distributed in an upper region and a lower region and are matched with the isolation selection circuit and the HOD module for use, and gesture recognition of single fingers, double fingers, multiple fingers, single hand, double hands and knees is achieved.
Examples
As shown in fig. 1, the module system block diagram mainly includes an LIN (local Interconnect network) communication module, a main control module, a heating module, an HOD module, and a vibration module, where the main control module receives configuration and control information such as HOD, heating, vibration, and the like of the ADAS system through the LIN communication module, and feeds back HOD state, heating state, and vibration state information through the LIN communication module; the main control module realizes a heating function by controlling the heating module, and acquires information such as heating temperature, heating current and the like at regular time, so that faults such as overheating or overcurrent during heating are avoided; the main control module realizes the HOD function through the HOD module, and after internal data and algorithm processing, namely when the HOD data is larger than a touch threshold value plus a reference, the HOD module is judged to be in a handshake state; when the HOD is smaller than the release threshold value plus the reference, determining that the hands are in an off-hand state; when the HOD data is in the region before two thresholds, the last state is maintained. Meanwhile, a certain shake (fluctuation) eliminating area is set, so that the situation that the HOD data fluctuates to cause misjudgment or HOD state jumping when a driver holds the steering wheel with uneven strength or turns in the actual driving process can be avoided, and the current state and gesture of the steering wheel held by the driver of the ADAS system are fed back through the LIN communication module; the main control module realizes a vibration function through the vibration module, receives an ADAS command from the LIN bus, performs vibration feedback in real time, and monitors open-circuit and short-circuit faults of the vibration motor.
Problem 1 in the background of the invention is realized, the existing steering wheel needs to be modified by the current steering wheel for realizing the HOD function on the market, a measuring component is added, for example, HOD is realized in an infrared detection mode, an infrared detection sensor needs to be placed in a hollow position at 3 points and 9 points which are often held by both hands of a driver, and HOD is realized in a pressure detection mode, so that a steering wheel leather sheath needs to be detached for placing a pressure detection component, and then leather sewing treatment is carried out, so that the attractiveness of the steering wheel is not influenced, for the whole car factory, a plurality of installation procedures are added on the surface, and the cost behind the steering wheel can be greatly improved;
according to the invention, an HOD function is realized on the existing heating coil of the steering wheel, as shown in fig. 2, an isolation circuit is added in hardware implementation to separately carry out steering wheel heating and HOD, and in software, an MCU (main control module) realizes that the HOD is closed to be connected with the heating coil when heating is realized by controlling a selection switch, so that a large current is prevented from burning out an HOD sensor when heating is carried out, and the heating circuit is closed to be connected with the heating coil when HOD is carried out, so that the influence of the heating circuit on data detection is avoided.
Meanwhile, the invention uses a layout structure for carrying out upper and lower regions on the steering wheel hub, and can realize gesture recognition of single finger, double fingers, multiple fingers, single hand, double hands, knees and the like.
Problem 2 in the background of the invention is realized, the steering wheel of a middle-low vehicle type in the market has single function, some steering wheels are even not provided with heating function, a northern user can realize the heating function after the steering wheel needs to be installed, and the heating function is realized by a northern user at some time, because the required power is high during heating and the steering wheel is not provided with a protected heating module, a fuse is burned, and a battery can be damaged seriously;
according to the invention, the heating function is realized on the existing heating coil of the steering wheel, and in terms of hardware realization, temperature and current monitoring is added, so that the situation of overheating heating or abnormal current can be avoided in the heating process, and the driving safety level is improved while the driving experience is improved.
Problem 3 in the background art of the invention is realized, the problem of response time delay exists in an acousto-optic alarm mode, and the driving safety problem is easy to occur when a driving auxiliary system such as lane departure early warning and driver fatigue detection needs quick response time;
the vibration module with adjustable vibration intensity and vibration mode is added on the existing steering wheel, multiple alarms or feedback prompts are realized by feeding back various vibration modes, the vibration module can be applied to driving auxiliary systems such as lane departure early warning and driver fatigue detection, and the vibration module has a fault diagnosis function, so that short circuit and open circuit alarm of a vibration motor can be realized, normal realization of vibration feedback is ensured, and the driving safety level is improved.
According to the automobile steering wheel HOD, heating and vibration three-in-one module, the HOD sensor based on the capacitive detection principle is adopted, so that the steering wheel can be detected in a full-coverage mode, the detection electrode can be replaced by the existing heating coil of the steering wheel, and the cost is greatly reduced; the heating device has a heating function, can monitor safety parameters such as heating temperature, current and the like in real time, ensures that faults such as overheating or fuse burning cannot occur, and improves the driving safety level while improving the driving experience; the method adopts a vibration prompt feedback mode, greatly improves the reaction time of the driver, can be used in a driving auxiliary system requiring high timeliness, such as lane departure early warning, driver fatigue detection and the like, and improves the driving safety level.
According to the automobile steering wheel HOD and heating and vibrating three-in-one module provided by the embodiment of the invention, on one hand, the HOD function is realized by adopting the steering wheel heating coil, multiple gesture recognition can be realized by the upper and lower double-zone layout of the steering wheel heating wire, on the other hand, the heating function is realized by using the existing steering wheel heating wire, the over-temperature and over-current protection function is realized, and meanwhile, the vibration feedback mode is adopted, so that the reaction time of a driver is greatly prolonged, and the driving safety level is improved.
The foregoing is only a preferred embodiment of this invention and it should be noted that modifications can be made by those skilled in the art without departing from the principle of the invention and these modifications should also be considered as the protection scope of the invention.
Claims (4)
1. Three-in-one module of car steering wheel HOD, heating and vibration, its characterized in that: the device comprises an LIN communication module, a main control module, a heating module, an HOD module and a vibration module; the LIN communication module, the heating module, the HOD module and the vibration module are respectively connected with the main control module, wherein the heating module, the HOD module and the vibration module are all installed on the steering wheel.
2. The three-in-one module for steering wheel HOD, heating and vibration of a vehicle of claim 1, wherein: the main control module receives HOD, heating, vibration configuration and control information of the ADAS through the LIN communication module, and feeds back HOD state, heating state and vibration state information through the LIN communication module;
the main control module realizes a heating function by controlling the heating module, and acquires heating temperature and heating current information at regular time, so as to avoid overheating or overcurrent fault during heating;
the main control module realizes the HOD function through the HOD module, and after internal data and algorithm processing, the state and the gesture of a current driver holding a steering wheel of the ADAS system can be fed back through the LIN communication module;
the main control module realizes a vibration function through the vibration module, receives an ADAS command from the LIN bus, performs vibration feedback in real time, and monitors open-circuit and short-circuit faults of the vibration motor.
3. The three-in-one module for steering wheel HOD, heating and vibration of a vehicle according to claim 1 or 2, characterized in that: automobile steering wheel HOD, heating and the trinity module of vibration still include the isolation selection circuit who is connected with heating module, HOD module respectively, and the steering wheel heater strip cooperatees with isolation selection circuit and is connected the use.
4. The three-in-one module for steering wheel HOD, heating and vibration of a vehicle of claim 3, wherein: the upper and lower two-zone layout of the steering wheel heating wires is matched and connected with the isolation selection circuit and the HOD module for use, and gesture recognition of single fingers, double fingers, multiple fingers, single hand, double hands and knees is realized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110040839.8A CN112477973A (en) | 2021-01-13 | 2021-01-13 | Automobile steering wheel HOD, heating and vibration three-in-one module |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110040839.8A CN112477973A (en) | 2021-01-13 | 2021-01-13 | Automobile steering wheel HOD, heating and vibration three-in-one module |
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| CN112477973A true CN112477973A (en) | 2021-03-12 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112959946A (en) * | 2021-04-02 | 2021-06-15 | 大连丁格尔杰格科技有限公司 | Driving operation execution feedback induction device |
| CN113720361A (en) * | 2021-07-20 | 2021-11-30 | 上海纳恩汽车技术股份有限公司 | Steering wheel of integrated heating function is from hand detection sensor |
| CN113834994A (en) * | 2021-10-27 | 2021-12-24 | 均胜均安汽车电子(上海)有限公司 | Simulated touch device for detecting steering wheel away from hand |
| CN114104079A (en) * | 2021-12-21 | 2022-03-01 | 北京他山科技有限公司 | HOD steering wheel heating pad |
| CN115140148A (en) * | 2022-06-24 | 2022-10-04 | 东风柳州汽车有限公司 | Touch control type steering wheel |
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2021
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115140148A (en) * | 2022-06-24 | 2022-10-04 | 东风柳州汽车有限公司 | Touch control type steering wheel |
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Application publication date: 20210312 |