CN210970847U - Automobile anti-scratch system based on vehicle-mounted Ethernet and automobile - Google Patents
Automobile anti-scratch system based on vehicle-mounted Ethernet and automobile Download PDFInfo
- Publication number
- CN210970847U CN210970847U CN201921363018.2U CN201921363018U CN210970847U CN 210970847 U CN210970847 U CN 210970847U CN 201921363018 U CN201921363018 U CN 201921363018U CN 210970847 U CN210970847 U CN 210970847U
- Authority
- CN
- China
- Prior art keywords
- vehicle
- door
- automobile
- distance
- ethernet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000005540 biological transmission Effects 0.000 claims description 18
- 238000005516 engineering process Methods 0.000 claims description 6
- 230000002265 prevention Effects 0.000 claims description 5
- 238000005538 encapsulation Methods 0.000 claims description 3
- 230000008054 signal transmission Effects 0.000 claims description 3
- 230000004888 barrier function Effects 0.000 abstract description 6
- 238000006748 scratching Methods 0.000 abstract 1
- 230000002393 scratching effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 11
- 230000007246 mechanism Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 3
- 239000000523 sample Substances 0.000 description 2
- 235000008694 Humulus lupulus Nutrition 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005670 electromagnetic radiation Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000009304 pastoral farming Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 230000007727 signaling mechanism Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Images
Landscapes
- Traffic Control Systems (AREA)
Abstract
The utility model provides a system and car are prevented cutting with scissors by the car of on-vehicle ethernet, and the system of preventing cutting with scissors includes distance sensor, on-vehicle ethernet gateway, controller, door aperture sensor, alarm module. The scratch-proof system provided by the invention can adjust the maximum opening degree of the vehicle door according to the distance between the vehicle and the adjacent barrier when the vehicle is parked on a parking space, so that passengers can safely get off the vehicle and the vehicle door can not scratch the adjacent vehicle or the barrier when the vehicle door is in the maximum opening degree, and the problems of scratching the adjacent vehicle when the vehicle door is opened due to incorrect parking position or too narrow distance between the two vehicles are satisfactorily solved.
Description
Technical Field
The utility model relates to an automobile safety field especially relates to an automobile is prevented cutting system and car of rubbing based on-vehicle ethernet.
Background
With the popularization of automobiles, more and more automobiles enter every family and possess more and more automobiles. With the increase of the quantity of the automobiles, the problems of traffic congestion and tension outside the parking are caused. At present, when a plurality of superstores and residential communities face gradually increased automobiles, the originally designed parking spaces are obviously smaller than the number of the automobiles, so that the number of the vacant parking spaces is very small, and the parking is difficult. On the other hand, when the parking technologies of the drivers of the vehicles are uneven, the vehicles are not in the forward direction and are in an inclined state or deviate from the parking space marking line when the vehicles are parked on the parking space, and the vehicles are close to the left side line or the right side line. Such as: limited space for parking and an inability to determine well the distance between two vehicles, some drivers often place a vehicle too close to a nearby vehicle. When a driver backs a car to enter a corresponding parking space for parking, the parked car and the adjacent car often pass through due to the fact that the car in the adjacent parking space is not parked at a correct position, therefore, when the car opens, passengers sitting in the car often do not realize that the vertical distance between the car and the door of the adjacent car is small, and the door of the car scrapes the adjacent car to damage the appearance of the adjacent car and the appearance of the door of the car when the driver suddenly opens the door when the driver leaves the car.
In the prior art, for example, patent CN101927746A provides a collision avoidance system, which is to install an infrared or microwave probe at the tail of a car, and control the door lock switch by induction. When other vehicles or pedestrians follow behind the vehicle, the probe firstly detects that the control door lock is closed, the door cannot be opened, and therefore the vehicle or the pedestrians can not collide with the vehicle or the pedestrians which follow behind. This type of collision avoidance system avoids a collision by automatically locking the door when a vehicle or pedestrian is detected, but if the adjacent vehicle stops and does not move forward, the passenger or driver may not be able to open the door to get off the vehicle. The patent CN105882519A also provides an anti-collision device and a control method when a vehicle is parked and opened, including a sensing module, an electronic control module, a door lock and an alarm module, where an output end of the sensing module is connected with an input end of the electronic control module, and an output end of the electronic control module is connected with the alarm module and a control end of the door lock respectively; the sensing module comprises a moving object sensor for detecting whether pedestrians or driving vehicles exist around the vehicle, a vehicle speed sensor for acquiring the current vehicle speed, and a switch sensor for acquiring whether a vehicle door is to be opened; the vehicle speed sensor is arranged on an output shaft of the transmission, and the switch sensor is arranged at a handle at the inner side of the vehicle door. However, according to the technical scheme, when pedestrians or vehicles are beside the vehicle, the door-opening and vehicle-unloading person is reminded to pay attention to the coming or coming of the vehicle behind the vehicle. The technical scheme only reminds passengers or drivers, and if the passengers neglect the reminding and still open the vehicle door rapidly, accidents still occur. In addition, above scheme can't be applicable to the car in the parking area and stops the back and prevent the scene that this car door caused the scratch to the adjacent car when opening the door.
Disclosure of Invention
Based on the defect that exists among the prior art, the utility model discloses the technical problem that solve lies in avoiding in parking area this car to cause the system of scraping of adjacent car because of opening the door after stopping.
In order to achieve the above object, the utility model provides a system is prevented cutting and grazing by car of on-vehicle ethernet, include:
the device comprises a distance sensor, a vehicle-mounted Ethernet gateway, a controller and a vehicle door opening sensor, wherein the distance sensor is connected with the vehicle-mounted Ethernet gateway, and the vehicle-mounted Ethernet gateway and the vehicle door opening sensor are respectively connected with the controller;
a distance sensor configured to measure a distance between the automobile and an adjacent obstacle;
the vehicle-mounted Ethernet gateway is configured to establish network connection among different devices, and when different network transmission protocols are adopted among the devices, the data using the different transmission protocols in different network segments are translated and converted mutually;
the controller is configured to call, control or perform decision analysis on each functional module of the system;
and a door opening sensor configured to control an opening of the door according to a control instruction from the controller, thereby controlling a distance between the opened door and the obstacle.
The automobile anti-scratch system of the vehicle-mounted Ethernet is characterized in that three limiting angles are arranged at the opening degree of the automobile door, namely a maximum opening angle α, a maximum safe opening angle β and a minimum side body lower angle gamma;
the maximum opening angle α is defined as an angle corresponding to a maximum opening at which the door can be naturally opened without the door opening sensor controlling the door opening;
the maximum safe opening angle β is defined as an angle corresponding to the maximum opening degree at which the door can be opened when the door opening degree sensor controls the door opening degree;
the maximum safe opening angle β ═ acrsin (width of the vehicle door/distance between the vehicle and an adjacent vehicle after parking) and β ≦ α, and the width of the vehicle door is defined as the maximum width of a line segment between two edges of the door and parallel to the ground plane;
the minimum side body getting-off angle gamma is defined as an angle corresponding to the minimum door opening degree of the vehicle which can be just got off by a person on the vehicle through opening the door.
The automobile scratch-proof system of the vehicle-mounted Ethernet is characterized in that the distance sensors comprise a left front door distance sensor, a right front door distance sensor, a left rear door distance sensor and a right rear door distance sensor, and the distance sensors are mounted on corresponding automobile bodies of automobile doors but do not comprise the automobile doors;
the distance sensor comprises one or more of an ultrasonic radar sensor, a laser range finder and an infrared range finder.
The automobile scratch-proof system of the vehicle-mounted Ethernet further comprises an alarm module, wherein the alarm module is connected with a controller and is configured to send an alarm prompt tone according to an alarm instruction received from the controller to give an alarm.
The automobile scratch-proof system of the vehicle-mounted Ethernet further comprises a comparison module and a decision module, wherein the comparison module is used for comparing the automobile scratch-proof data with the decision module;
the comparison module is configured to compare the acquired distance between the vehicle and the adjacent barrier with the maximum vertical distance of the vehicle door of the vehicle and judge the size of the distance, and then send the compared result to the decision module;
the decision module is configured to decide which of the first condition, the second condition and the third condition the vehicle door is in according to the data received from the comparison module;
the first situation comprises that the distance between the vehicle and the adjacent vehicle is larger than the maximum vertical distance of the vehicle door after the vehicle stops;
the second situation comprises that after the parking of the vehicle is finished, the distance between the vehicle and the adjacent vehicle is less than or equal to the maximum vertical distance of the vehicle door, but greater than the minimum lateral getting-off vertical distance;
the third situation comprises that the distance between the vehicle and the adjacent vehicle is smaller than the minimum side getting-off vertical distance after the vehicle stops;
the maximum vertical distance of the vehicle door defines the vertical distance between the farthest edge of the vehicle door, which is far away from the vehicle body, and the side surface of the vehicle body on the side connected with the farthest edge of the vehicle door when the angle corresponding to the opening degree of the opened vehicle door is α;
the maximum safe vertical distance of the vehicle door defines the vertical distance between the farthest edge of the vehicle door, which is far away from the vehicle body, and the side surface of the vehicle body on the side connected with the farthest edge of the vehicle door when the angle corresponding to the opening degree of the opened vehicle door is β;
the minimum side-to-side vertical distance of the vehicle door is defined as the vertical distance between the farthest edge of the vehicle door far away from the vehicle body and the side surface of the vehicle body on the side connected with the farthest edge of the vehicle door and the angle corresponding to the opening degree of the opened vehicle door is gamma.
The automobile scratch prevention system of the vehicle-mounted Ethernet further comprises an instruction control issuing module, wherein the control issuing module is configured to issue corresponding control instructions according to the situation of the automobile door.
The utility model provides a system is scratched to automobile anti-cutting of on-vehicle ethernet, furtherly, instruction control issues the module and issues not controlling the opening sensor of this door to the door that is in situation one, issues to the door that is in situation two and controls this door opening sensor and make its biggest opening angle be less than and be equal to biggest safe opening angle β, issues to the door that is in situation three and pins the door and send alarm command simultaneously.
The automobile scratch prevention system of the vehicle-mounted Ethernet is characterized in that a distance sensor is connected with a vehicle-mounted Ethernet gateway through a vehicle-mounted Ethernet bus, a vehicle-mounted Ethernet chip is configured on the vehicle-mounted Ethernet, signal transmission needs to be carried out through the vehicle-mounted Ethernet chip for signal encapsulation or unpacking, the vehicle-mounted Ethernet chip comprises a physical layer and a medium access control layer, and the medium access control layer adopts an IEEE 802.3 interface standard.
The automobile scratch prevention system of the vehicle-mounted Ethernet further comprises an Ethernet audio and video bridging technical protocol, wherein the Ethernet audio and video bridging technical protocol comprises four standard 802.1AS precise time synchronization protocols, an 802.1Qat stream reservation protocol, an 802.1Qav queue and forwarding protocol and an 802.1BA audio and video bridging system standard.
An automobile comprises the automobile anti-scratch system based on the vehicle-mounted Ethernet.
Has the advantages that:
1. the utility model provides a system of rubbing is prevented cutting to pieces by car of on-vehicle ethernet when the car stops on the parking stall, can be according to the maximum aperture of this car and the interval adjustment door of adjacent barrier for when the door is in maximum aperture, the passenger can get off safely and the door still can not cause to scrape and rub adjacent vehicle or barrier, and satisfactory solution causes to scrape and rub the scheduling problem because of the parking position is not just or the interval between two cars is too narrow when causing the door of driving.
2. The transmission network adopting the vehicle-mounted Ethernet can reduce the cost of the wiring harness and has high transmission rate.
Drawings
The following drawings are only schematic illustrations and explanations of the present invention, and do not limit the scope of the present invention.
Fig. 1 is the utility model relates to a structural schematic diagram of the anti-scratch system of car.
Fig. 2 is a schematic view of an embodiment of the present invention in an open state of an automobile with a distance sensor.
Fig. 3 is a schematic view illustrating that the distance between the vehicle and the adjacent vehicle is greater than the maximum vertical distance between the doors of the vehicle when the vehicle stops at the parking space according to an embodiment of the present invention.
Fig. 4 is a schematic view of an abstract geometric solid relationship between a vehicle and an adjacent vehicle when the vehicle stops at a parking space according to an embodiment of the present invention.
Fig. 5 is a schematic view of an abstract geometric distance between an automobile and an adjacent automobile when the automobile stops at a parking space according to an embodiment of the present invention.
Fig. 6 is a schematic view illustrating that the distance between the vehicle and the adjacent left vehicle is smaller than or equal to the maximum vertical distance of the vehicle door but greater than the minimum lateral getting-off vertical distance when the vehicle stops at the parking space according to an embodiment of the present invention.
Fig. 7 is a schematic view of an abstract geometric distance according to an embodiment of the present invention, wherein the distance between the vehicle and the adjacent left vehicle is smaller than the maximum vertical distance of the doors but larger than the minimum vertical distance of the vehicles getting off from the side when the vehicle stops at the parking space.
Fig. 8 is a schematic structural diagram of a controller according to an embodiment of the present invention.
Detailed Description
In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described with reference to the accompanying drawings, in which like reference numerals refer to like parts in the drawings. For the sake of simplicity, the drawings schematically show the relevant parts of the present invention, and do not represent the actual structure of the product. In addition, in order to make the drawings concise and understandable, components having the same structure or function in some of the drawings are only schematically illustrated or only labeled.
As for the control system, the functional module, application program (APP), is well known to those skilled in the art, and may take any suitable form, either hardware or software, and may be a plurality of functional modules arranged discretely, or a plurality of functional units integrated into one piece of hardware. In its simplest form, the control system may be a controller, such as a combinational logic controller, a micro-programmed controller, or the like, so long as the operations described herein are enabled. Of course, the control system may also be integrated as a different module into one physical device without departing from the basic principle and scope of the present invention.
Example 1
This implementation provides a system is rubbed to prevent cutting to pieces of car, specifically refer to fig. 1 and fig. 2, and fig. 1 is the utility model relates to a system is rubbed to prevent cutting to pieces of car's structural schematic diagram, fig. 2 is the utility model relates to an embodiment installs the schematic diagram under the distance sensor car state of opening the door, prevents cutting to pieces the system includes: the vehicle-mounted door opening sensor comprises a distance sensor, a vehicle-mounted Ethernet gateway, a controller and a door opening sensor, wherein the distance sensor is connected with the vehicle-mounted Ethernet gateway, and the vehicle-mounted Ethernet gateway and the door opening sensor are respectively connected with the controller.
A distance sensor configured to measure a distance between the automobile and an adjacent obstacle;
in particular, it may be one of an ultrasonic radar sensor, a laser range finder, an infrared range finder or other sensors that can be used to measure distance.
The vehicle-mounted Ethernet gateway is configured to establish network connection among different devices, and when different network transmission protocols are adopted among the devices, the data using the different transmission protocols in different network segments are translated and converted mutually;
in particular, data transmission based on the CAN protocol CAN be converted into data transmission based on the vehicle-mounted ethernet protocol. Conversely, the data transmission based on the vehicle-mounted Ethernet protocol CAN be converted into the data transmission based on the CAN protocol.
The controller is configured to call and control each functional module of the system;
the adjacent obstacle may be a car, a pedestrian, or other object.
A door opening sensor configured to control a door opening;
referring to fig. 4 in detail, fig. 4 is a schematic diagram of an abstract solid-geometric relationship of a distance between the host vehicle and an adjacent vehicle when the host vehicle stops at a parking space in the embodiment, and the opening degrees of the doors are provided with three limiting angles, which are a maximum opening angle α, a maximum safe opening angle β and a minimum side body descending angle γ;
OA is located on the door and represents the width of the door, OC is located on the body and has the same width as the width of the door, AD is the maximum vertical distance of the door, arc AC is the moving track of the door, HI is the maximum safe vertical distance of the door, and JK is the minimum lateral getting-off vertical distance of the door.
The maximum opening angle α is defined as an angle corresponding to the maximum opening at which the door can be naturally opened without the door opening sensor controlling the door opening, α is related to the vehicle type only, and when the vehicle type is fixed, α is constant.
The maximum safe opening angle β is defined as an angle corresponding to the maximum opening angle at which the door can be opened when the door opening sensor controls the door opening angle, the maximum safe opening angle β is acrsin (the width of the door of the vehicle/the distance between the vehicle and the adjacent vehicle after parking) and β is less than or equal to α, and the width of the door of the vehicle is defined as the maximum width of a line segment which is between two edges of the door and is parallel to the ground plane;
the minimum side body getting-off angle gamma is defined as the angle corresponding to the minimum door opening degree of the vehicle which can be just got off by the person on the vehicle by opening the door, gamma is only related to the vehicle type, and when the vehicle type is fixed, gamma is a constant.
The maximum vertical distance of the door defines a vertical distance between a farthest edge of the door from the vehicle body and a side surface of the vehicle body on a side to which the farthest edge is connected when the door is opened by an angle α, and a line segment AD in fig. 4 is the maximum vertical distance of the door.
The maximum safe vertical distance of the door defines the vertical distance between the farthest edge of the door from the vehicle body and the side of the vehicle body to which the farthest edge is connected when the door is opened at an angle of β, and the line HI in fig. 4 is the maximum safe vertical distance of the door.
The minimum side-to-side vertical distance of the door is defined as the angle γ corresponding to the opening degree of the door, and the vertical distance between the farthest edge of the door away from the vehicle body and the side of the vehicle body to which the door is connected is indicated by the line segment JK in fig. 4.
Specifically, the door opening sensor controls the opening of the door in accordance with a control command from the controller, and controls the opening of the door to control the distance between the opened door and the obstacle.
The distance sensors comprise a left front door distance sensor, a right front door distance sensor, a left rear door distance sensor and a right rear door distance sensor, and the distance sensors are mounted on the corresponding vehicle body of the corresponding vehicle door but do not comprise the vehicle door;
referring to fig. 2, specifically, as: the left front door distance sensor is installed on the vehicle body and located at the edge position of the left front door, and the right front door distance sensor is installed on the vehicle body and located at the edge position of the right front door. Taking the left front door as an example, OA represents the door width, OC also represents the door width, and arc length AC represents the movement trajectory when the door is opened. The OA is located on the vehicle door, the OC is located on the vehicle body, and the OA is equal to the OC.
The anti-scratch system also comprises an alarm module, the alarm module is connected with the controller, and the alarm module is configured to give an alarm prompt tone according to an alarm instruction received from the controller to give an alarm;
specifically, when the vehicle is parked on the parking space, the distance between the vehicle and the adjacent vehicle is smaller than the safe distance for opening the vehicle door, the alarm module sends out a prompt tone to alarm to remind a driver to adjust the parking position, and when the vehicle door is not opened, personnel on the vehicle cannot get off the vehicle from a small door opening gap due to the fact that the opening degree of the vehicle door is limited by the safe distance.
The controller comprises a comparison module, a decision module and an instruction issuing control module;
referring to fig. 8, fig. 8 is a schematic structural diagram of the controller of the present embodiment.
The comparison module is configured to compare the acquired distance between the vehicle and the adjacent barrier with the maximum vertical distance of the vehicle door of the vehicle and judge the size of the distance, and then send the compared result to the decision module;
the decision module is configured to decide which of the first condition, the second condition and the third condition the vehicle door is in according to the data received from the comparison module;
the first situation comprises that the distance between the vehicle and the adjacent vehicle is larger than the maximum vertical distance of the vehicle door after the vehicle stops; the second situation comprises that after the parking of the vehicle is finished, the distance between the vehicle and the adjacent vehicle is less than or equal to the maximum vertical distance of the vehicle door, but greater than the minimum lateral getting-off vertical distance; the third situation comprises that the distance between the vehicle and the adjacent vehicle is smaller than the minimum side getting-off vertical distance after the vehicle stops.
The controller also comprises an instruction control issuing module, and the control issuing module is configured to issue a corresponding control instruction according to the situation of the vehicle door;
specifically, the instruction control issuing module issues the vehicle door in the first situation to not control the opening sensor of the vehicle door, controls the vehicle door opening sensor in the second situation to enable the maximum opening angle to be smaller than or equal to the maximum safe opening angle β, issues the vehicle door in the third situation to lock the vehicle door and simultaneously issues an alarm instruction, and the alarm instruction is transmitted to the alarm module, so that the alarm module starts a loudspeaker to alarm to remind a driver of readjusting the parking position.
The alarm mode has various modes, and can be a buzzer, a vibration mode, a voice prompt mode and the like.
The distance sensor is connected with the vehicle-mounted Ethernet gateway through a vehicle-mounted Ethernet bus, and the vehicle-mounted Ethernet bus transmission has low cost, can reduce the transmission delay of audio and video, and has higher transmission rate.
Vehicle ethernet is a new type of lan technology for ethernet connection to in-vehicle electronics units. Unlike the conventional ethernet using 2 or 4 pairs of Unshielded Twisted Pair (UTP) cables, the physical layer of the in-vehicle ethernet employs BroadR-Reach technology of blosson corporation, which has been standardized by one-pair ethernet alliance (OPEN). The vehicle-mounted Ethernet can realize the data transmission rate of 100Mbps or even 1Gbps on a single pair of unshielded twisted pair wires, and simultaneously meets the requirements of the automobile industry on high reliability, low electromagnetic radiation, low power consumption, low delay, synchronous real-time property and the like. The MAC layer of the vehicle-mounted Ethernet adopts the interface standard of IEEE 802.3 and can support widely used high-level network protocols (such as TCP/IP).
The vehicle-mounted ethernet is configured with a vehicle-mounted ethernet chip, signal transmission needs to be performed by the vehicle-mounted ethernet chip for signal encapsulation or unpacking, and the vehicle-mounted ethernet chip includes a physical layer (PHY layer) and a medium access control layer (MAC layer), where the medium access control layer adopts an interface standard of IEEE 802.3.
The vehicle-mounted Ethernet also comprises an Ethernet Audio/Video Bridging (AVB) protocol, and the AVB protocol mainly comprises four standard 802.1AS accurate time synchronization protocols, an 802.1Qat stream reservation protocol, an 802.1Qav queue and forwarding protocol, and an 802.1BA Audio/Video Bridging system standard:
the 802.1AS Precision Time Protocol (PTP) provides a low-delay and low-jitter clock. PTP defines a clock synchronization mechanism of the whole network based on an IEEE1588:2002 protocol. By defining the mechanisms of master clock selection and negotiation algorithm, path delay measurement and compensation, and clock frequency matching and adjustment, PTP devices exchange standard ethernet messages, synchronizing the time of each node of the network to a common master clock. AS a simplified version of the IEEE1588 protocol, the biggest difference between IEEE 802.1AS and 1588 is that PTP is a protocol based entirely on two-layer network, non-IP routing. Like IEEE1588, PTP defines a method of auto-negotiating a network Master Clock, i.e., a Best Master Clock Algorithm (BMCA). BMCA defines the underlying negotiation and signaling mechanism for identifying the master clock (Grandmaster) within the AVB local area network. Once the master clock is selected, the PTP equipment of all local area network nodes takes the master clock as a reference value, and if the Grandmaster changes, the whole AVB network can determine a new master clock in the shortest time through the BMCA, so that the whole network is ensured to keep time synchronization. The core of the 802.1AS is the timestamp mechanism (Timestamping). When a PTP message enters or exits a port with an 802.1AS function, a local real-time clock (RTC) is sampled according to protocol triggering, the RTC value of the PTP message is compared with information from a Master clock (Master) corresponding to the port, and the RTC clock value of the PTP message is matched with the time of a PTP domain by utilizing a path delay measuring and compensating technology. When the PTP synchronization mechanism covers the whole AVB local area network, the clock adjustment and frequency matching algorithm can be accurately realized among all network node devices through the periodic exchange of PTP messages. Eventually, all PTP nodes will synchronize to the same "Wall Clock" (Wall Clock) time, i.e., Grandmaster time. In a network environment with 7 hops at most, the PTP can theoretically ensure that the clock synchronization error is within 1 μ s.
802.1Qat Stream Reservation Protocol (SRP) solves the competition problem between AV real-time flow and common asynchronous TCP flow in network. Through the negotiation mechanism, the required bandwidth resources are reserved on the whole path of the AV flow from the source equipment to different switches and then to the terminal equipment, so that the End-to-End (End-to-End) service quality and delay guarantee are provided.
802.1Qav queue and Forwarding Protocol (Qav) is used for solving the problem of competition between AV real-time traffic and ordinary asynchronous TCP traffic in a network. Through the negotiation mechanism, the required bandwidth resources are reserved on the whole path of the AV flow from the source equipment to different switches and then to the terminal equipment, so that the End-to-End (End-to-End) service quality and delay guarantee are provided.
The 802.1BA AV bridging Systems (AVB) defines the profiles for AVB Systems.
Due to the existence of the protocols, the time synchronization can be carried out on the transmission of the audio and the video in time, the delay of the picture is reduced, the user experience is improved, and the cost is low.
Example 2
The embodiment provides a method for preventing scratches and scratches of an automobile, wherein when a driver of the automobile parks the automobile in a parking space, a distance between a vehicle door and an adjacent obstacle is calculated through a distance sensor, then a controller adjusts the distance between the vehicle door and the adjacent obstacle according to a preset value and compares the distance with the preset value, and the opening degree of the vehicle door is controlled through a vehicle door opening sensor according to a comparison result, so that scratches and scratches between the vehicle door and the adjacent obstacle cannot occur in the opening degree range.
Referring to fig. 3 in detail, fig. 3 is a schematic diagram illustrating that the distance between the vehicle and the adjacent vehicle is greater than the maximum vertical distance of the vehicle door when the vehicle stops at a parking space according to this embodiment, in fig. 3, a first parking space, a second parking space, and a third parking space are displayed, a left adjacent vehicle is parked at the first parking space, a right adjacent vehicle is parked at the third parking space, when the vehicle starts to park at the second parking space, the distance sensor starts to measure the distance between the vehicle door and the left adjacent vehicle and the right adjacent vehicle in real time, and the distance between the vehicle and the adjacent vehicle is compared with the maximum vertical distance of the vehicle door after parking is completed.
The first case is defined as: after the parking of the vehicle is finished, the distance between the vehicle and the adjacent vehicle is larger than the maximum vertical distance of the door of the vehicle, as shown in fig. 3. The second case is defined as: after the vehicle stops, the distance between the vehicle and the adjacent vehicle is smaller than or equal to the maximum vertical distance of the vehicle door, but larger than the minimum lateral getting-off vertical distance. The third situation is defined to include that the distance between the vehicle and the adjacent vehicle is smaller than the minimum side getting-off vertical distance after the vehicle stops.
Referring to fig. 5, fig. 5 is a schematic diagram of an abstract geometric distance when the distance between the vehicle and the adjacent vehicle is greater than the maximum vertical distance of the vehicle door when the vehicle is parked in the parking space in the embodiment, EF represents a sideline of the adjacent vehicle, CF represents the distance S2 between the vehicle and the adjacent vehicle after parking, α represents the maximum opening angle α represents the maximum vertical distance S1 between the vehicle and the vehicle after parking, and as can be seen from the figure, S1< S2.
It should be noted that, in a typical automobile, there are four doors, namely a left front door, a right front door, a left rear door, and a right rear door, and because different doors of the automobile are in different environments, different drivers may have different parking positions in the same parking space, and the automobile may be in a vertical position or an inclined position. When the adjacent vehicle is in a parking space, a vertical position and an inclined position may exist. There are different situations where the spacing of different doors from adjacent vehicles is different, there may be a first situation for the left front door, a second situation for the right front door, a third situation for the left rear door, a first situation for the right rear door, etc. For convenience of brief description, only one of the doors is illustrated, and in practice, when a vehicle is parked in a parking space, the distances between the four doors and an adjacent vehicle need to be calculated, and then the distances between the four doors and the maximum vertical distance of the corresponding door are respectively compared.
The second situation is defined as the distance between the vehicle and the adjacent vehicle after the vehicle is parked is less than or equal to the maximum vertical distance of the vehicle door but greater than the minimum vertical distance of the side car, specifically referring to fig. 6 and 7, fig. 6 is a schematic diagram of an abstract geometric distance between the vehicle and the left adjacent vehicle when the vehicle is parked in a parking space according to the present embodiment, where the distance between the vehicle and the left adjacent vehicle is less than or equal to the maximum vertical distance of the vehicle door but greater than the minimum vertical distance of the side car, fig. 7 is a schematic diagram of an abstract geometric distance between the vehicle and the left adjacent vehicle when the vehicle is parked in a parking space according to an embodiment of the present invention, fig. 7 is a schematic diagram of a right adjacent vehicle parked in a first parking space, a third adjacent vehicle, and a second parking vehicle, fig. 7 shows that the vehicle is parked in a second parking space, EF shows a borderline of the left adjacent vehicle, α shows that the maximum opening angle of the vehicle door corresponds to the maximum opening angle of the vehicle door, AD shows that the maximum vertical distance of the vehicle door is S1 of the vehicle door, CF shows that the vehicle and the distance between the vehicle and the left adjacent vehicle after the parking space S2, where the maximum opening angle is smaller than the maximum opening angle of the corresponding vehicle door, where the corresponding door 35 3, shows that the maximum opening angle of the corresponding door when the corresponding door is smaller than the maximum opening angle of the corresponding door, so that the corresponding door of the corresponding door 3526 when the adjacent vehicle door moves from the adjacent vehicle door, so as to the maximum door, so that the maximum door moves from the maximum door before the adjacent vehicle door moves, so that the adjacent vehicle door moves, the maximum door moves, the.
The third situation is defined as that the distance between the vehicle and the adjacent vehicle is smaller than the minimum side getting-off vertical distance after the vehicle stops, the control sensor adjusts the opening degree of the vehicle door according to the distance, and because the distance is smaller at the moment, the vertical distance of the vehicle door corresponding to the maximum opening degree formed by the vehicle door under the condition that the large safety angle is β is smaller than the minimum side getting-off vertical distance, at the moment, the driver or the passengers on the vehicle cannot get off the vehicle, and the controller can send an alarm instruction to the alarm module to start an alarm prompt tone to remind the driver to adjust the position.
Specifically, it should be noted that "connected" and "electrically connected" in all embodiments of the present invention may include direct connection, indirect connection, and communication connection.
What has been described above is only a preferred embodiment of the present invention, and the present invention is not limited to the above embodiments. It is clear to those skilled in the art that the form in this embodiment is not limited thereto, and the adjustable manner is not limited thereto. It is understood that other modifications and variations directly derivable or suggested by a person skilled in the art without departing from the basic idea of the invention are considered to be within the scope of protection of the invention.
Claims (7)
1. The utility model provides a system of rubbing is prevented cutting to automobile based on-vehicle ethernet which characterized in that includes: the device comprises a distance sensor, a vehicle-mounted Ethernet gateway, a controller and a vehicle door opening sensor, wherein the distance sensor is connected with the vehicle-mounted Ethernet gateway, and the vehicle-mounted Ethernet gateway and the vehicle door opening sensor are respectively connected with the controller;
a distance sensor configured to measure a distance between the automobile and an adjacent obstacle;
the vehicle-mounted Ethernet gateway is configured to establish network connection among different devices, and when different network transmission protocols are adopted among the devices, the data using the different transmission protocols in different network segments are translated and converted mutually;
the controller is configured to call, control or perform decision analysis on each functional module of the system;
and a door opening sensor configured to control an opening of the door according to a control instruction from the controller, thereby controlling a distance between the opened door and the obstacle.
2. The automobile anti-scratch system based on the vehicle-mounted Ethernet as claimed in claim 1, wherein the distance sensors comprise a left front door distance sensor, a right front door distance sensor, a left rear door distance sensor and a right rear door distance sensor, and the distance sensors are mounted on the corresponding automobile body of the corresponding automobile door but do not comprise the automobile door;
the distance sensor comprises one or more of an ultrasonic radar sensor, a laser range finder and an infrared range finder.
3. The automobile scratch prevention system based on the vehicular ethernet according to claim 1, wherein the scratch prevention system further comprises an alarm module, the alarm module is connected with the controller, and the alarm module is configured to send an alarm prompt tone according to an alarm command received from the controller to give an alarm.
4. The automobile anti-scratch system based on the vehicular Ethernet is characterized in that the controller further comprises a command control issuing module, and the control issuing module is configured to issue corresponding control commands according to the situation of the automobile door.
5. The automobile anti-scratch system based on the vehicle-mounted ethernet according to claim 1, wherein the distance sensor is connected to the vehicle-mounted ethernet gateway through a vehicle-mounted ethernet bus, the vehicle-mounted ethernet is configured with a vehicle-mounted ethernet chip, signal transmission requires signal encapsulation or signal unpacking through the vehicle-mounted ethernet chip, the vehicle-mounted ethernet chip includes a physical layer and a medium access control layer, wherein the medium access control layer adopts an interface standard of IEEE 802.3.
6. The automobile anti-scratch system based on the vehicular ethernet according to claim 1, wherein the vehicular ethernet further comprises an ethernet audio video bridging technology protocol, and the ethernet audio video bridging technology protocol comprises four standard 802.1AS precision time synchronization protocols, an 802.1Qat stream reservation protocol, an 802.1Qav queue and forwarding protocol, and an 802.1BA audio video bridging system standard.
7. An automobile, characterized by comprising the vehicular ethernet-based automobile anti-scratch system according to any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921363018.2U CN210970847U (en) | 2019-08-21 | 2019-08-21 | Automobile anti-scratch system based on vehicle-mounted Ethernet and automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921363018.2U CN210970847U (en) | 2019-08-21 | 2019-08-21 | Automobile anti-scratch system based on vehicle-mounted Ethernet and automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210970847U true CN210970847U (en) | 2020-07-10 |
Family
ID=71453668
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921363018.2U Active CN210970847U (en) | 2019-08-21 | 2019-08-21 | Automobile anti-scratch system based on vehicle-mounted Ethernet and automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210970847U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114202964A (en) * | 2022-02-16 | 2022-03-18 | 深圳支点电子智能科技有限公司 | Mobile internet service processing method based on block chain |
-
2019
- 2019-08-21 CN CN201921363018.2U patent/CN210970847U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114202964A (en) * | 2022-02-16 | 2022-03-18 | 深圳支点电子智能科技有限公司 | Mobile internet service processing method based on block chain |
| CN114202964B (en) * | 2022-02-16 | 2022-05-10 | 深圳支点电子智能科技有限公司 | Mobile internet service processing method based on block chain |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110549940B (en) | Automobile scratch prevention method and system based on vehicle-mounted Ethernet | |
| US20220410912A1 (en) | Electronic Control Unit, Gateway Circuit for an Airbag Electronic Control Unit, Safety System for a Vehicle, and Environmental Sensor Element | |
| US10688961B2 (en) | In-vehicle smoke detection and reporting system and method for car sharing and ride sharing vehicles | |
| US20180082590A1 (en) | Vehicle-to-vehicle cooperation to marshal traffic | |
| US20080063006A1 (en) | Device coupled between serial busses using bitwise arbitration | |
| CN210970847U (en) | Automobile anti-scratch system based on vehicle-mounted Ethernet and automobile | |
| US9550450B2 (en) | Exit warning system for a motor vehicle having a sliding door | |
| JP4858380B2 (en) | Traffic parameter calculation system, calculation method, and computer program | |
| JP2018537761A (en) | Method and apparatus for reducing the risk of collision between an automobile and an object | |
| Aoki et al. | Dynamic intersections and self-driving vehicles | |
| US20070185689A1 (en) | Systems and methods for event detection and logging in access control points | |
| US11532232B2 (en) | Vehicle having dangerous situation notification function and control method thereof | |
| CN112832615A (en) | Safe door opening method, device and equipment for assisting passengers to get off and storage medium | |
| CN111016651A (en) | Vehicle, vehicle-mounted equipment, extensible vehicle-mounted display screen and control method | |
| WO2023134352A1 (en) | Platform screen door control system, method, and platform screen door linked control system | |
| Khan | Using ADAS sensors in implementation of novel automotive features for increased safety and guidance | |
| JP2001501050A (en) | Data bus for multiple bus sharing devices | |
| CN210363590U (en) | Vehicle body bottom image driving auxiliary system | |
| Camek et al. | An automotive Side-View system based on Ethernet and IP | |
| CN111204298A (en) | Vehicle motion adaptive system and method | |
| CN115520091A (en) | Safety early warning method and system for vehicle door opening | |
| CN112419783A (en) | Vehicle driving assisting system, method and device | |
| KR101160620B1 (en) | Integrated Vehicle Gateway System with internal black box | |
| JP2008068714A (en) | Vehicle window controller | |
| JP5366621B2 (en) | Ride comfort improved train control system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |