CN217804544U - Steering wheel is from hand warning device, accuse equipment and vehicle in vehicle - Google Patents
Steering wheel is from hand warning device, accuse equipment and vehicle in vehicle Download PDFInfo
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- CN217804544U CN217804544U CN202221962396.4U CN202221962396U CN217804544U CN 217804544 U CN217804544 U CN 217804544U CN 202221962396 U CN202221962396 U CN 202221962396U CN 217804544 U CN217804544 U CN 217804544U
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Abstract
The utility model discloses a steering wheel is from controlling equipment and vehicle in hand warning device, vehicle. Wherein, steering wheel leaves hand warning device, includes: the HOD module, the control module and the execution module; the HOD module comprises a receiving component, the execution module comprises a display component, and the receiving component and the display component are arranged on the HOD module of the steering wheel body and used for acquiring the hands-off detection data through the receiving component; the control module is connected with the HOD module and used for determining a hand-off recognition result according to the hand-off detection data; and generating a prompt instruction under the condition that the hand-off recognition result is in the hand-off state; and the execution module is connected with the control module and used for receiving the prompt instruction and displaying the hand-off prompt information through the display component. The technical scheme that this application provided when improving the steering wheel and leaving hand detection precision, has solved prior art and has influenced driver's driving easily through the suggestion mode that pronunciation and vibration combine, has the technical problem of great potential safety hazard.
Description
Technical Field
The utility model relates to a vehicle safety technical field especially relates to a steering wheel is from controlling equipment and vehicle in hand warning device, vehicle.
Background
With the progress of society, automobiles gradually become one of important transportation means for people to travel instead of walk. In recent years, people have been increasingly aware of their safety, and the safety requirements for driving automobiles have been increasing.
In order to ensure driving safety, automobiles are generally provided with an HOD (Hand Off Detection) function, which is to perform a warning by detecting whether the hands of the automobile driver are away from the steering wheel. HOD is widely used in ADAS (Advanced Driving Assistance System). When the driver is detected to leave the steering wheel by the HOD.
At present, when the hands of a driver are detected to leave a steering wheel, the driver is generally reminded through warning modes such as vibration and voice, however, in the prior art, the driving of the driver is easily affected through a prompting mode combining voice and vibration, and great potential safety hazards exist.
SUMMERY OF THE UTILITY MODEL
The utility model provides a steering wheel is from controlling equipment and vehicle in hand warning device, vehicle for solve prior art and influence driver's driving easily through the suggestion mode that pronunciation and vibration combine, have the technical problem of great potential safety hazard.
The embodiment of the utility model provides a first aspect provides a steering wheel is from hand warning device, include: the HOD module, the control module and the execution module; the HOD module comprises a receiving component, the execution module comprises a display component, and the receiving component and the display component are arranged on the steering wheel body;
the HOD module is used for acquiring the hand-off detection data through the receiving component;
the control module is connected with the HOD module and used for determining a hand-off recognition result according to the hand-off detection data; and generating a prompt instruction under the condition that the hand-off recognition result is in the hand-off state;
and the execution module is connected with the control module and used for receiving the prompt instruction and displaying the hand-off prompt information through the display component.
The embodiment of the utility model provides a second aspect provides a accuse equipment in vehicle, including the first aspect the steering wheel leave hand warning device.
An embodiment of the third aspect provides a vehicle, including the first aspect the steering wheel leave hand warning device.
Above-mentioned steering wheel is from hand warning device, accuse equipment and vehicle in the vehicle, this steering wheel is from among the hand warning device, HOD module and execution module all are connected with control module, the HOD module gives control module with the hand detection data that detects, control module confirms according to from hand detection data from the hand recognition result, just generate the suggestion instruction for the condition of leaving the hand state in leaving the hand recognition result, show through the display module in order to trigger execution module and leave hand prompt information, make the driver in time react, and through showing from hand prompt information suggestion driver, the suggestion mode is more simple and convenient, can not cause the interference for driver driving process, thereby solved prior art and influenced driver's driving hidden danger easily through the suggestion mode that pronunciation and vibration combine, there is the technical problem of great potential safety hazard.
Drawings
Fig. 1 is a schematic structural view of a steering wheel hands-off warning device according to an embodiment of the present invention;
fig. 2 is a control schematic diagram of a steering wheel hands-off warning device according to an embodiment of the present invention;
fig. 3 is a schematic position diagram of an LED strip provided in an embodiment of the present invention;
fig. 4 is a schematic diagram of a position of a light hole according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a vehicle central control device according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises" and "comprising," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a system, article, or apparatus that comprises a list of elements is not necessarily limited to those elements explicitly listed, but may include other elements not expressly listed or inherent to such system, article, or apparatus.
Fig. 1 is a schematic structural view of a steering wheel hands-off warning device provided by an embodiment of the present invention. Referring to fig. 1, a steering wheel hands-off warning device according to an embodiment of the present invention includes: HOD module 10, control module 20, and execution module 30; the HOD module 10 includes a receiving component, the execution module 30 includes a display component, and the receiving component and the display component are disposed on the steering wheel body; an HOD module 10 for acquiring hands-off detection data via a receiving component; the control module 20 is connected with the HOD module 10 and used for determining a hand-off recognition result according to the hand-off detection data; and generating a prompt instruction under the condition that the hand-off recognition result is in the hand-off state; and the execution module 30 is connected with the control module 20 and is used for receiving the prompt instruction and displaying the hand-off prompt information through the display component.
In order to effectively improve driving safety, a steering wheel hands-off detection function, i.e., an HOD function, has been applied to many advanced driving assistance systems. Many automobiles are currently equipped with a steering wheel hands-off detection function. From low automation to semi-automation to full automation, different levels of autopilot systems have different requirements for the hand-held steering wheel state. During driving, the driver can leave the steering wheel with hands due to emergencies or habitual reasons, which is a very dangerous behavior in low-speed or high-speed driving. The steering wheel off-hand detection can better supervise the steering wheel held by the driver, namely, the driver can warn by detecting whether the driver's hand is off the steering wheel, so that the driving safety is guaranteed in the advanced driving assistance system. Currently, there are many ways to implement HOD functionality, such as capacitive sensing, image recognition, and pressure sensing. Currently, the more common way of detecting the hands-off includes three types of torque measurement, optical measurement and capacitance measurement.
Torque measurement refers to a determination made by measuring the magnitude and direction of the driver's torque on the steering wheel. It is low cost, but the necessary condition for measurement is to turn the steering wheel, and the hand gesture cannot be recognized, and the anti-cheating function is not provided.
The optical measurement refers to the condition monitoring of the driver by means of optical sensing equipment, and has high measurement precision. However, the implementation cost is high, and a plurality of device components such as a light supplement, a camera, a software driver, and the like are generally required to support the implementation cost. Further, due to the limitation of conditions such as the imaging angle, it is difficult to recognize the state of the driver's hand gripping the steering wheel, for example, whether the driver is gripping the steering wheel or touching the steering wheel.
The capacitive sensing measurement is to measure and judge according to the grasping state of the steering wheel by the driver, and comprises a grasping mode, left-hand and right-hand distinguishing and the like. The measurement is not affected by gloves, clothes, etc., and the steering wheel does not need to be turned. The measurement mode can be realized by using a single chip, and a metal wire of a sensing device is omitted, so that the cost is further reduced.
The capacitance measurement has good effects in the aspects of measurement precision, reliability, cost control and the like, and has obvious advantages compared with other two measurement modes.
The HOD module 10 In this embodiment may employ an IQ modulation-based capacitive sensor, and it is understood that the IQ modulation-based capacitive sensor uses human equivalent parasitic capacitance to perform capacitance measurement, and when a human touches a detection region of a steering wheel, in-phase (I, in-phase) and Quadrature-phase (Q) may be collected by the IQ modulation-based capacitive sensor, so that a derived capacitance value is larger than that In a non-contact state. The measurement can directly calculate the accurate capacitance value, so that the driver's hands-off detection data can be acquired through the receiving component.
The hands-off detection data may include one or more of time of a driver holding the steering wheel, grip strength, direction, and time of leaving the steering wheel. Since the HOD module 10 is only used to detect the hand-off detection data of the steering wheel, the hand-off detection data needs to be sent to the control module 20 for corresponding processing, and the control module 20 performs the next processing.
The IQ-modulated capacitive sensor used in this embodiment utilizes human equivalent parasitic capacitance to realize capacitance measurement, that is, capacitance data on the steering wheel body needs to be acquired. The receiving component in this embodiment may be various acquisition devices for acquiring capacitance data, for example, a heating wire or a conductive copper wire. The receiving component can be used for acquiring capacitance data detected on the steering wheel and sending the detected capacitance data to the HOD module, so that the HOD module can acquire hands-off detection data according to the capacitance data. Further, the receiving assembly may be provided in the steering wheel body. In particular, it may be arranged outside the rim of the steering wheel body, i.e. the area where the driver normally holds the steering wheel body when driving a car.
The control module 20 is connected to the HOD module 10 and the execution module 30, and serves as a main control device of the steering wheel hands-off warning device, and after analyzing and processing data sent by the HOD module 10, the processing result obtained by the analysis is sent to the execution module 30, so that the execution module 30 can execute corresponding operations according to the instruction of the control module 20. Specifically, the control module 20 in this embodiment may determine the hand-off recognition result after performing analysis processing according to the hand-off detection data sent by the HOD module 10, where the hand-off recognition result may be a normal holding state and a hand-off state. After determining the hand-off recognition result according to the hand-off detection data, the control module 20 generates a prompt instruction only when the hand-off recognition result is in a hand-off state, and sends the prompt instruction to the execution module to instruct the execution module to execute a corresponding operation.
The execution module 30 executes corresponding operations according to the instructions issued by the control module 20. Namely, the actual executor of the execution module 30, after receiving the prompt instruction, drives the display component to display the hands-off prompt information through the prompt instruction, so as to warn the driver to take care of holding the steering wheel. Since the prompt instruction can be generated only when the driver is recognized to leave the steering wheel, unnecessary prompt instructions are not frequently generated so as to cause unnecessary interference to the driver in the driving process.
The display component can be a display screen, a lamp bead or a lamp strip. The light with different colors emitted by the display screen, the lamp beads or the lamp strip is easy to be sensed by human eyes, so that the attention of people is attracted. Therefore, the display assembly in the embodiment can display the off-hand indication information through the light to warn the driver. The display assembly is disposed in the steering wheel body, and particularly, may be disposed at a middle portion of the steering wheel body, above the steering wheel body, or at an outer edge of the steering wheel body.
In this embodiment, optionally, the display component includes an LED strip, and the LED strip is disposed on a side of the steering wheel body facing the driving seat.
This embodiment can set up LED lamp area in the one side towards the driver's seat. Due to the design, the driver can notice the departure prompt information conveniently, and the driving of the driver is not interfered. The execution module 30 may control the LED strip to output lights with different colors and brightness. When the hand-off recognition result indicates that the holding is normal, the execution module 30 may control the LED strip to emit blue light, green light, or yellow light. Blue, green and yellow light can be of relatively soft brightness, so that the design can be adapted to the reception ability of the human eye. When the hand-off recognition result is the hand-off state, the execution module 30 can control the LED lamp strip to emit red light. The light emitting mode of the LED lamp strip can be set differently according to the result of the hand-off recognition. For example, under normal conditions, the LED strip may be controlled to continuously emit blue light, green light, or yellow light, and under the condition that the hands-off recognition result is the hands-off state, the LED strip may be controlled to continuously emit red light, flash red light, or emit red light that moves cyclically. It can be understood that the LED strip refers to a strip that is formed by welding a LED lamp on a copper wire or a strip-shaped flexible circuit board through a special processing process, and has relatively high flexibility. Therefore, the design of this technical scheme can make the shape that LED lamp area can match the steering wheel body better, and the production process is fairly simple.
As shown in fig. 2, the control module 20 in this embodiment may be a single chip microcomputer S32K116 chip. The HOD module 10 can implement the hands-off detection through an AS8579 chip, and the AS8579 chip calculates the capacitance change condition by using a synchronization component (I, in-phase) and an integration component (Q) to detect the hands-off detection data. An IQ-modulated capacitive sensor employing an AS8579 chip may enhance the safety of the autopilot-assist system. The execution module 30 may be an E52280A97D001 chip. Specifically, the AS8579 chip detects the environment around the steering wheel body and acquires hands-off detection data. The singlechip S32K116 chip reads the hand-off detection data from the AS8579 chip through a Serial Peripheral Interface SPI (Serial Peripheral Interface), obtains a hand-off recognition result through analysis and processing, and then drives the LED lamp strip to emit light with corresponding colors through the singlechip S32K116 chip through an IO control E52280A97D001 chip. It is understood that UJA1075TW is a communication chip that communicates with an external LIN through an interface while supplying power to the control module 20. The UJA1075TW communication chip and the E52280A97D001 chip are connected with an external power supply through an interface.
In this embodiment, optionally, the receiving assembly in this embodiment includes a heating wire disposed on the steering wheel body, and the AS8579 chip is connected to the heating wire and connected to the control module 20.
Specifically, the AS8579 chip is provided on the steering wheel body. The design can improve the detection reliability. The AS8579 chip employs capacitive sensing technology to perform separation of resistive and capacitive portions (quantity/fraction/ratio) based on the impedance measured by the sensor element. Compared with the existing charging and discharging method of capacitive sensing used in the automobile, the technology can more reliably detect whether the driver holds both hands on the steering wheel, and can accurately detect even if the driver wears gloves or under a humid condition. Therefore, the AS8579 chip can improve the safety of the advanced driving assistance system and can reduce the cost of the manual driving detection system. The display component in this embodiment may be a heater wire provided on the steering wheel body, and the heater wire may be provided in a region where the driver grips the steering wheel body when driving the vehicle. The AS8579 chip is connected with the heating wire, and the capacitance value can be measured through the heating wire, so that the hand-off detection data can be acquired according to the capacitance value. As shown in fig. 2, the heating wire can be controlled by two fets, FDD5614P and NCV8401BDTRKG to heat.
In this embodiment, optionally, the steering wheel body is provided with a strip-shaped groove; the size of the strip-shaped groove is matched with that of the LED lamp strip; the LED lamp strip is embedded into the strip-shaped groove.
This embodiment can set up the strip recess with the shape assorted in LED lamp area in the outside of steering wheel body. As shown in fig. 3, the LED strip 31 is provided on the steering wheel body 40, and faces a side of the driving seat. Specifically, the strip-shaped groove starts to wind the steering wheel body 40 for a half turn from one end of the middle portion of the steering wheel body 40, and then returns to the other end of the middle portion of the steering wheel body 40. It will be appreciated that the LED strip 31 is embedded in the strip-like recess. The strip-shaped groove is mainly provided in the upper half of the steering wheel body 40, and this position is within the sight range of the driver when driving the vehicle. This technical scheme designs like this, can be convenient for settle LED lamp area, need not to increase the structure of installation LED lamp area 31 in addition, and the cost ratio is lower, still makes things convenient for the driver in time to notice the warning light that LED lamp area 31 sent.
In this embodiment, optionally, the steering wheel body 40 further includes: a protective cover 41, the protective cover 41 being configured to include a steering wheel body 40; the protective cover 41 is provided with at least one light hole 411 corresponding to the LED strip 31.
As shown in fig. 4, a protective cover 41 is fitted over the steering wheel main body 40. In this embodiment, at least one light hole 411 is formed in a position of the protection cover 41 corresponding to the LED strip 31. Specifically, a plurality of light holes 411 arranged in a row in sequence may be provided, or a plurality of light holes 411 arranged in a row in sequence may be provided. When there is only one row of light holes 411, the LED strip 31 may emit red light for warning the driver, which is sequentially moved and cyclically displayed on the row of light holes 411. When there are multiple rows of light-transmitting holes 411, the LED strip 31 may emit red light that appears to constitute a particular letter or number on the multiple rows of light-transmitting holes 411. This technical scheme designs like this, the light that is convenient for LED lamp area 31 to send can see through safety cover 41 for show the partial light that LED lamp area 31 sent through light trap 411, compare whole LED lamp area 31 and give out light and can not be too dazzling, both accord with people's eye to the receptivity of light, can avoid again causing the interference at the driving in-process for the driver, the security is higher relatively.
In this embodiment, optionally, at least one light-transmitting hole 411 is disposed at the upper third position when the rotation angle of the steering wheel body 40 is zero.
Since the LED strip 31 is disposed above the steering wheel body 40, the present embodiment can dispose the at least one light hole 411 at a position of the upper third when the rotation angle of the steering wheel body 40 is zero. For example, when the driver does not turn the steering wheel body 40, and the turning angle of the steering wheel body 40 is zero at this time, the light transmission hole 411 may be provided at the upper one-third position of the turning angle of the steering wheel body 40 being zero. Specifically, considering the steering wheel body 40 as a clock, at least one light-transmitting hole 411 is provided at a position between eleven points to one point of the clock. Of course, if several light-transmitting holes 411 are arranged in a row, the row of light-transmitting holes 411 may be disposed at ten to two points. Because at least one light hole 411 sets up at the top that is closer to steering wheel body 40, this position is more obvious, and in case there is light to send from this light hole 411, perhaps there is the light scintillation, the driver can both discover immediately and in time react in the driving process. The design of this embodiment like this can make the driver notice the light that LED lamp area 31 sent more easily to the security that the driver drove the vehicle has been improved.
In this embodiment, optionally, the control module 20 is further connected to the vehicle CAN bus, and is configured to synchronize the information of the hands-off state to the vehicle CAN bus if the hands-off recognition result is the hands-off state.
A Controller Area Network (CAN) bus is a field bus with a wide application, and the CAN bus has the advantages of reliability, real-time performance, flexibility and the like in the aspect of data communication. For design transparency and implementation flexibility, the CAN bus structure is divided into two layers, a physical layer and a data link layer, following the ISO/OSI standard model. The data link layer comprises a logical link control sublayer LLC and a medium access control sublayer MAC. The logical link control sublayer LLC provides services for data transfer and remote data requests; the functions of the MAC sublayer are mainly the transport rules, i.e. control frame structure, execution arbitration, error checking, error calibration and fault definition.
The single chip microcomputer S32K116 chip serving as the control module 20 synchronizes the information of the hands-off state to the vehicle CAN bus to report to each application of the advanced driver assistance system after determining the hands-off recognition result according to the hands-off test data and under the condition that the hands-off recognition result is in the hands-off state. Specifically, the control module 20 transmits the hands-off state information to the vehicle CAN bus to report the driver's holding of the steering wheel during driving to the advanced driver assistance system through the vehicle CAN bus. The advanced assistant driving system knows whether the driver holds the steering wheel or not, so that the driver can decide whether to take over the vehicle control.
Fig. 5 is a schematic structural diagram of a vehicle central control device according to an embodiment of the present invention. As shown in fig. 5, the terminal device includes a steering wheel hands-off warning device 500, a processor 510 and a memory 520, and may further include an input device 530, an output device 540 and a communication device 550; the number of the processors 510 in the vehicle central control device may be one or more, and one processor 510 is taken as an example in fig. 5; the processor 510, the memory 520, the input device 530, the output device 540, and the communication device 550 in the vehicle central control apparatus may be connected by a bus or other means, and the bus connection is exemplified in fig. 5.
The memory 520 serves as a computer-readable storage medium for storing software programs, computer-executable programs, and modules. Processor 510 operates by executing software programs, instructions, and modules stored in memory 520.
The memory 520 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program required for at least one function; the storage data area may store data created according to the use of the terminal device, and the like. Further, the memory 520 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device. In some examples, memory 520 may further include memory located remotely from processor 510, which may be connected to a terminal device through a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The input means 530 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the terminal device. The output device 540 may include a display device such as a display screen. The vehicle central control equipment provided by the embodiment of the invention has the corresponding functions and beneficial effects of the steering wheel hands-off warning device in the embodiment.
It should be noted that, in the embodiment of the vehicle central control device, the included units and modules are only divided according to the functional logic, but are not limited to the above division as long as the corresponding functions can be realized; in addition, the specific names of the functional units are also only for the convenience of distinguishing from each other, and are not used to limit the protection scope of the present invention.
The utility model provides a vehicle, the steering wheel that includes above-mentioned embodiment leaves hand warning device.
The above-mentioned embodiments further describe the objects, technical solutions and advantages of the present invention in detail, it should be understood that the above-mentioned embodiments are only examples of the present invention, and are not intended to limit the scope of the present invention. It should be understood that any modification, equivalent replacement, or improvement made by those skilled in the art without departing from the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a steering wheel is from hand warning device which characterized in that includes: the HOD module, the control module and the execution module; the HOD module comprises a receiving component, the execution module comprises a display component, and the receiving component and the display component are arranged on a steering wheel body;
the HOD module is used for acquiring the data of the hands-off detection through the receiving component;
the control module is connected with the HOD module and used for determining an out-of-hand identification result according to the out-of-hand detection data; and generating a prompt instruction under the condition that the hand-off recognition result is in a hand-off state;
and the execution module is connected with the control module and used for receiving the prompt instruction and displaying the hand-off prompt information through the display component.
2. The steering wheel hands-off warning device of claim 1, wherein the display assembly comprises a LED strip;
the LED lamp belt is arranged on one side of the steering wheel body facing the driving position.
3. The steering wheel hands-off warning device according to claim 2, wherein the steering wheel body is provided with a strip-shaped groove;
the size of the strip-shaped groove is matched with that of the LED lamp strip;
the LED lamp strip is embedded into the strip-shaped groove.
4. The steering wheel hands-off warning device of claim 3, wherein the steering wheel body further comprises:
a protective cover for including the steering wheel body;
the protective cover is provided with at least one light hole corresponding to the position of the LED lamp strip.
5. The device as claimed in claim 4, wherein the at least one light hole is disposed in the upper third of the steering wheel body when the steering wheel body corner is zero.
6. The steering wheel hands-off warning device of claim 1, wherein the receiving assembly comprises a heating wire disposed on the steering wheel body;
the HOD module comprises an AS8579 chip;
the AS8579 chip is connected with the heating wire and the control module.
7. The steering wheel hands-off warning device according to claim 6, wherein the AS8579 chip uses a synchronous component and an integral component to identify the capacitance change condition of the heating wire, so AS to detect hands-off detection data.
8. The steering wheel hands-off warning device of claim 1, wherein the control module is further connected to a vehicle CAN bus, and is configured to synchronize information of the hands-off state to the vehicle CAN bus if the hands-off recognition result is the hands-off state.
9. A vehicle central control apparatus, characterized by comprising a steering wheel hands-off warning device according to any one of claims 1 to 8.
10. A vehicle comprising a steering wheel hands-off warning device according to any of claims 1 to 8.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202221962396.4U CN217804544U (en) | 2022-07-27 | 2022-07-27 | Steering wheel is from hand warning device, accuse equipment and vehicle in vehicle |
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| CN202221962396.4U CN217804544U (en) | 2022-07-27 | 2022-07-27 | Steering wheel is from hand warning device, accuse equipment and vehicle in vehicle |
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| CN217804544U true CN217804544U (en) | 2022-11-15 |
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| CN202221962396.4U Active CN217804544U (en) | 2022-07-27 | 2022-07-27 | Steering wheel is from hand warning device, accuse equipment and vehicle in vehicle |
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