CN115022947A - Positioning anchor point management method and device - Google Patents
Positioning anchor point management method and device Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
- H04W52/0261—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level
- H04W52/0274—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level by switching on or off the equipment or parts thereof
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/02—Services making use of location information
- H04W4/023—Services making use of location information using mutual or relative location information between multiple location based services [LBS] targets or of distance thresholds
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/80—Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
- H04W64/006—Locating users or terminals or network equipment for network management purposes, e.g. mobility management with additional information processing, e.g. for direction or speed determination
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- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
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Abstract
The embodiment of the application discloses a method and a device for managing positioning anchors, wherein the method for managing the positioning anchors is applied to a vehicle side, and a plurality of anchors are preset on the vehicle; the method comprises the following steps: after the near field communication is established between the digital key and the vehicle, the digital key is positioned according to the anchor point; calculating the distance between the digital key and the vehicle and/or the moving direction of the digital key according to the positioning point of the digital key; and adjusting the opening number of the antenna modules corresponding to the anchor points according to the distance and/or the moving direction. Through the scheme of the embodiment, the power consumption of the anchor point positioning system is reduced.
Description
Technical Field
The present disclosure relates to digital key applications, and more particularly, to a method and apparatus for managing anchor points.
Background
At present, a digital key can be positioned through anchor points, and a power management method for each anchor point in a traditional scheme is as follows: after the antenna module corresponding to each anchor point is awakened to enter the post-working state, the antenna module is always in the high-speed sampling state, the power consumption of each antenna module in the working process is high, the conventional power consumption is 0.12W, and the instantaneous power consumption can be larger than 2W, so that the power consumption of the anchor point positioning system is overhigh.
Disclosure of Invention
The embodiment of the application provides a method and a device for managing a positioning anchor point, which can reduce the power consumption of an anchor point positioning system.
The embodiment of the application provides a positioning anchor point management method which is applied to a vehicle side, wherein a plurality of anchor points are preset on the vehicle; the method may include:
after the near field communication between the digital key and the vehicle is established, positioning the digital key according to the anchor point;
calculating the distance between the digital key and the vehicle and/or the moving direction of the digital key according to the positioning point of the digital key;
and adjusting the opening number of the antenna modules corresponding to the anchor points according to the distance and/or the moving direction.
In an exemplary embodiment of the present application, the method may further include:
and starting all the anchor points to locate the digital key in the initial period of establishing the near field communication between the digital key and the vehicle.
In an exemplary embodiment of the present application, adjusting the number of the antenna modules corresponding to the anchor point according to the distance may include:
when the digital key is not moved at the positioning point and the distance is less than or equal to a preset first distance threshold value, acquiring a first number of anchor points which are closest to the digital key from all the anchor points, keeping the antenna modules corresponding to the anchor points of the first number in an open state, and closing the antenna modules corresponding to the anchor points except the anchor points of the first number from all the anchor points; wherein the first number is less than the total number of anchor points; the first number is positively correlated with the distance.
In an exemplary embodiment of the present application, the method may further include: and when the distance between the digital key and a first anchor point preset in the anchor points is smaller than or equal to a preset second distance threshold value and the vehicle is in a flameout state at present, igniting the vehicle.
In an exemplary embodiment of the present application, adjusting the number of the antenna modules corresponding to the anchor point according to the moving direction may include:
when the moving direction is the direction approaching the vehicle, in the process that the digital key approaches the vehicle, trying to locate the digital key through any plurality of anchor points in all the anchor points, and when the digital key can be located through a second number of anchor points, keeping the antenna modules corresponding to the second number of anchor points in an open state, and closing the antenna modules corresponding to the anchor points except the second number of anchor points in all the anchor points; wherein the second number is less than the total number of anchor points.
In an exemplary embodiment of the present application, the method may further include: when the second number reaches the minimum number of anchor points capable of positioning the digital key, keeping the antenna modules corresponding to the anchor points with the minimum number of anchor points in an opening state and closing the antenna modules corresponding to the anchor points except the anchor points with the minimum number of anchor points in all the anchor points in the subsequent process that the digital key approaches the vehicle.
In an exemplary embodiment of the present application, the adjusting the number of the antenna modules corresponding to the anchor point according to the distance and/or the moving direction may include:
when the moving direction is the direction far away from the vehicle, the opening number of the antenna modules corresponding to the anchor points is adjusted along with the increase of the distance in the process that the digital key is far away from the vehicle.
In an exemplary embodiment of the present application, the adjusting the number of the antenna modules corresponding to the anchor point with the increase of the distance may include:
when the distance is smaller than or equal to a preset third distance threshold, keeping the antenna modules corresponding to the anchor points of the third number in an open state, and closing the antenna modules corresponding to the anchor points except the anchor points of the third number in all the anchor points; wherein the third number is less than the total number of anchor points;
when the distance is greater than the third distance threshold and less than or equal to a preset fourth distance threshold, keeping all the antenna modules corresponding to the anchor points in an open state;
and when the distance is greater than the fourth distance threshold, closing all the antenna modules corresponding to the anchor points.
In an exemplary embodiment of the present application, the adjusting the number of the antenna modules corresponding to the anchor point according to the distance and/or the moving direction may include:
when the digital key moves around the vehicle within the preset range of the vehicle, keeping the antenna modules corresponding to the anchor points of the fourth number in an open state, and closing the antenna modules corresponding to the anchor points except the anchor points of the fourth number in all the anchor points; wherein the fourth number is less than the total number of anchor points;
and when the distance between the digital key and any anchor point in the moving direction of the digital key is smaller than or equal to a preset fifth distance threshold value, starting the anchor point, and closing the antenna module corresponding to the anchor point with the farthest distance from the digital key in the fourth number of anchor points.
The embodiment of the present application further provides a positioning anchor management device, which may include a processor and a computer-readable storage medium, where instructions are stored in the computer-readable storage medium, and when the instructions are executed by the processor, the positioning anchor management method is implemented.
Compared with the prior art, the positioning anchor point management method provided by the embodiment of the application can be applied to a vehicle side, wherein a plurality of anchor points are preset on the vehicle; the method may include: after the near field communication between the digital key and the vehicle is established, positioning the digital key according to the anchor point; calculating the distance between the digital key and the vehicle and/or the moving direction of the digital key according to the positioning point of the digital key; and adjusting the opening number of the antenna modules corresponding to the anchor points according to the distance and/or the moving direction. Through the scheme of the embodiment, the power consumption of the anchor point positioning system is reduced.
Additional features and advantages of the embodiments of the application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the embodiments of the application. Other advantages of the embodiments of the present application may be realized and attained by the instrumentalities and methods described in the specification and the drawings.
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The accompanying drawings are included to provide an understanding of the embodiments of the present application and are incorporated in and constitute a part of this specification, illustrate embodiments of the present application and together with the examples of the application do not constitute a limitation of the embodiments of the application.
Fig. 1 is a flowchart of a positioning anchor management method according to an embodiment of the present application;
FIG. 2 is a diagram illustrating anchor point location distancing of the related art;
FIG. 3 is a diagram illustrating a hardware connection of an anchor point positioning system according to an embodiment of the present disclosure;
FIG. 4 is a schematic diagram illustrating the location of an anchor point on a vehicle according to an embodiment of the present application;
FIG. 5 is a schematic view of a digital key of an embodiment of the present application while in a vehicle;
FIG. 6 is a schematic view of a scenario in which a digital key according to an embodiment of the present application is close to a vehicle;
FIG. 7 is a schematic view of a scenario in which the digital key of the embodiment of the present application is far away from the vehicle;
FIG. 8 is a schematic view of a scenario in which a digital key of an embodiment of the present application moves around a vehicle;
fig. 9 is a block diagram illustrating a positioning anchor management apparatus according to an embodiment of the present application.
Detailed Description
The present application describes embodiments, but the description is illustrative rather than limiting and it will be apparent to those of ordinary skill in the art that many more embodiments and implementations are possible within the scope of the embodiments described herein. Although many possible combinations of features are shown in the drawings and discussed in the detailed description, many other combinations of the disclosed features are possible. Any feature or element of any embodiment may be used in combination with or instead of any other feature or element in any other embodiment, unless expressly limited otherwise.
The present application includes and contemplates combinations of features and elements known to those of ordinary skill in the art. The embodiments, features and elements disclosed in this application may also be combined with any conventional features or elements to form a unique inventive concept as defined by the claims. Any feature or element of any embodiment may also be combined with features or elements from other inventive aspects to form yet another unique inventive aspect, as defined by the claims. Thus, it should be understood that any of the features shown and/or discussed in this application may be implemented alone or in any suitable combination. Accordingly, the embodiments are not to be restricted except in light of the attached claims and their equivalents. Furthermore, various modifications and changes may be made within the scope of the appended claims.
Further, in describing representative embodiments, the specification may have presented the method and/or process as a particular sequence of steps. However, to the extent that the method or process does not rely on the particular order of steps set forth herein, the method or process should not be limited to the particular sequence of steps described. Other orders of steps are possible as will be understood by those of ordinary skill in the art. Therefore, the particular order of the steps set forth in the specification should not be construed as limitations on the claims. Further, the claims directed to the method and/or process should not be limited to the performance of their steps in the order written, and one skilled in the art can readily appreciate that the sequences may be varied and still remain within the spirit and scope of the embodiments of the present application.
The embodiment of the application provides a positioning anchor point management method which is applied to a vehicle side, wherein a plurality of anchor points are preset on the vehicle; as shown in fig. 1, the method may comprise steps S101-S103:
s101, after the near field communication is established between the digital key and the vehicle, the digital key is positioned according to the anchor point.
S102, calculating the distance between the digital key and the vehicle and/or the moving direction of the digital key according to the positioning point of the digital key.
S103, adjusting the opening number of the antenna modules corresponding to the anchor points according to the distance and/or the moving direction.
In exemplary embodiments of the present application, the near field communication may include, but is not limited to: and (4) Bluetooth communication.
In an exemplary embodiment of the present application, each anchor point may correspond to an antenna module, which may include but is not limited to: the UWB (ultra wide band) antenna module and the corresponding anchor point can be called as UWB anchor point.
UWB, ultra wideband, is a wireless carrier communication technology using a frequency bandwidth of 1GHz or more. Unlike other communication technology systems, UWB transmits data by using narrow non-sinusoidal pulses of nanoseconds (unit: ns) to picoseconds (also called picoseconds, unit: ps), so that the occupied frequency spectrum of UWB is large, and the data transmission rate can reach several hundred megabits per second or more.
A common wireless positioning method for UWB positioning is based on TOF (Time of Flight) triangulation, which usually requires 3 UWB anchor points.
The UWB positioning principle can be as shown in figure 2 that the digital key and 3 anchor UWB that the human body carried are through TOF mode range finding, and automobile body BNCM carries out position calculation and accomplishes the location through the algorithm after the range finding is accomplished.
The digital key changes intelligent terminal equipment (such as a smart phone, an NFC smart card, a smart watch, a smart bracelet and the like) into a car key through communication technologies such as NFC (near field communication, Bluetooth BLE) and UWB (ultra wide band), so that convenient functions of entering and starting a car without an entity key, authorizing remote keys of other people, setting personalized cars and the like are realized, and safer key management and more comfortable and convenient car using experience are realized.
In the exemplary embodiment of the present application, the distance between the digital key and the vehicle may be a distance between the digital key and a geometric center point of the vehicle, or a distance between the digital key and a certain designated anchor point on the vehicle, for example, an anchor point (e.g., UWB3) may be set at a middle position of the vehicle, and the anchor point is used as a standard anchor point for calculating the distance between the vehicle and the vehicle.
In an exemplary embodiment of the present application, as shown in fig. 3, which is a hardware connection diagram of an anchor point positioning system, the anchor point positioning system may include: VGM (Gateway), CEM (Central Electronic Module, car body Area Controller), CAN (Controller Area Network), CAN FD (CAN with Flexible Data rate, CAN bus with Flexible Data rate), CAN HS (CAN with high speed CAN bus), BNCM (bluetooth NFC Module, which is a host of anchor location system of digital key), TCAM (Vehicle mounted smart interconnect terminal), and multiple UWB antenna modules, such as UWB1, UWB2, UWB3, UWB4, 5, which communicate with BNCM through a private CAN Network, and BNCM is mainly used to supply power to UWB antenna modules and complete location algorithm, and also CAN be adapted to bluetooth to connect with digital key to transmit information.
In an exemplary embodiment of the present application, the VGM, TCAM, and the plurality of UWB antenna modules may communicate with the body BNCM module via a proprietary CAN protocol. The BNCM connects each UWB antenna module in series in a daisy chain form through a GPIO (12V level, i.e., digital output circuit). When the intelligent terminal equipment supporting the UWB function where the digital key is located is close to a vehicle, various functions such as locking, unlocking, starting, opening and closing of a vehicle window, air conditioning, vehicle sharing and the like can be achieved.
At present, the traditional mode for UWB antenna module power supply does: BNCM is unified to supply power (being all UWB antenna module power supply together) for anterior UWB antenna module, promptly, when the bluetooth connection pairs the back, can be simultaneously to UWB1, UWB2, UWB3, UWB4, UWB5 all 5 UWB antenna modules power-on, because single UWB antenna module during operation power consumption is relatively high, and conventional power consumption 0.12W, the power consumption can be greater than 2W in the twinkling of an eye, consequently, the total power consumption after the location is relatively large.
In an exemplary embodiment of the present application, with the continued development and improvement of electric vehicle technology, the future transportation world, whether private or truck industry, will operate on batteries, with larger batteries enabling longer driving distances from a consumer perspective, but at the same time increasing cost and weight. In order to solve the problem that the overall power consumption is large after positioning, a power management system of an electronic device of the vehicle body can be optimized from another idea, specifically, the power management of the antenna module corresponding to the positioning anchor point can be optimized, so that the power consumption of the vehicle body electronics is reduced, and the purpose of energy conservation is achieved.
In the exemplary embodiment of the present application, as shown in fig. 3, the BNCM may control the UWB1, UWB2, UWB3, UWB4, and UWB5 to be turned on and off through 5 mos transistors (metal oxide semiconductor field effect transistors) such as mos1 to mos5, respectively, thereby controlling the power supply and the power off to UWB1, UWB2, UWB3, UWB4, and UWB 5. The connection structure enables the BNCM to control different mos tubes to independently supply power to each UWB antenna module through I/O (input/output), so that the purpose of differentially powering up and down each UWB antenna module according to requirements is achieved.
In an exemplary embodiment of the present application, a schematic diagram of the setting positions of 5 anchor points (UWB1, UWB2, UWB3, UWB4, UWB5) on the vehicle may be as shown in fig. 4.
In an exemplary embodiment of the present application, the method may further include:
and starting all the anchor points to locate the digital key in the initial period of establishing the near field communication between the digital key and the vehicle.
In the exemplary embodiment of the present application, when the digital key detects a shock or displacement of the smart terminal device itself in which the digital key is located, it may be considered that the digital key is likely to be used, at which time a near field communication broadcast (e.g., bluetooth broadcast) may be turned on, and when the digital key is located within a distance range capable of establishing near field communication with a vehicle, near field communication may be established with a near field communication module (e.g., a BNCM on the vehicle side) within the vehicle.
In an exemplary embodiment of the present application, after the digital key establishes the near field communication with the vehicle, the digital key may be located through anchor points provided on the vehicle, and at the time of initial location, all anchor points may be turned on to locate the digital key. For example, when initial positioning is performed in an initial period of establishing near field communication, all 5 anchor points may be turned on for positioning.
In an exemplary embodiment of the present application, adjusting the number of the antenna modules corresponding to the anchor point according to the distance may include:
when the digital key is not moved at the positioning point and the distance is less than or equal to a preset first distance threshold value, acquiring a first number of anchor points which are closest to the digital key from all the anchor points, keeping the antenna modules corresponding to the anchor points of the first number in an open state, and closing the antenna modules corresponding to the anchor points except the anchor points of the first number from all the anchor points; wherein the first number is less than the total number of anchor points; the first number is positively correlated with the distance.
In the exemplary embodiment of the present application, the first distance threshold may be defined according to different application scenarios or requirements, and a specific value of the first distance threshold is not limited, for example, the first distance threshold may be a value closer to the vehicle, or a small value, such as 0-0.5 meter. When the first distance threshold is 0-0.5 meters, the digital key may be considered to be located in the vehicle.
In an exemplary embodiment of the present application, the first number may be self-defined according to a number of factors, such as the total number of anchor points set on the vehicle, the set position, the positioning accuracy, different first distance thresholds, etc., and for example, the first number may be 3 when the first distance threshold is 0-0.5 meters.
In the exemplary embodiment of the present application, as shown in fig. 5, when the digital key is in the vehicle, the positioning can be completed through three anchor points, for example, the digital key is positioned through UWB2, UWB3 and UWB5 distance measurement, the remaining two anchor points can be turned off, and the BNCM on the vehicle side after the positioning can be powered off to the remaining two anchor points (UWB1 and UWB4) by controlling the turn-off of the MOS transistor, thereby achieving the purpose of reducing the power consumption of the system.
In an exemplary embodiment of the present application, the method may further include: and when the distance between the digital key and a first anchor point preset in the anchor points is smaller than or equal to a preset second distance threshold value and the vehicle is in a flameout state at present, igniting the vehicle.
In an exemplary embodiment of the present application, the second distance threshold may be defined according to different application scenarios or requirements, and a specific value of the second distance threshold is not limited, for example, the second distance threshold may be 0-0.5 meter.
In an exemplary embodiment of the present application, the first anchor point may refer to UWB3, and it may also be determined whether the digital key is in the vehicle through the second distance threshold, and when the digital key is at a distance of less than or equal to 0.5 m from the anchor point UWB3, it may be determined that the digital key is in the in-vehicle area, and at this time, the vehicle may be allowed to ignite.
In an exemplary embodiment of the present application, adjusting the number of the antenna modules corresponding to the anchor point according to the moving direction may include:
when the moving direction is the direction approaching the vehicle, in the process that the digital key approaches the vehicle, trying to locate the digital key through any plurality of anchor points in all the anchor points, and when the digital key can be located through a second number of anchor points, keeping the antenna modules corresponding to the second number of anchor points in an open state, and closing the antenna modules corresponding to the anchor points except the second number of anchor points in all the anchor points; wherein the second number is less than the total number of anchor points.
In an exemplary embodiment of the present application, when the digital key is located within a distance range capable of establishing near field communication with the vehicle, near field communication may be established with a near field communication module (e.g., a BNCM on the vehicle side) inside the vehicle. After the near field communication is initially established, the BNCM in the vehicle can control and conduct the mos 1-mos 55 mos tubes, the UWB antenna module of the 5 anchor points is electrified and awakened, and the digital key is initially positioned through the 5 anchor points.
In an exemplary embodiment of the present application, during the movement of the digital key, the plurality of anchor points may also pre-determine the movement direction of the digital key, and when the pre-determined movement direction is directed to the vehicle, it may be determined that the digital key moves from far to near outside the vehicle body relative to the vehicle, that is, is approaching the vehicle.
In an exemplary embodiment of the present application, during the approach of the digital key to the vehicle, the digital key initiates a distance measurement requirement, the BNCM in the vehicle obtains the distance information between each UWB anchor point and the digital key, the BNCM in the vehicle calculates the area, the position and the moving direction of the digital key in real time according to the distance information through an embedded algorithm, and as the distance between the digital key and the vehicle gets closer and closer, an attempt may be made to gradually reduce the number of the opened anchor points.
In an exemplary embodiment of the present application, the second number may be determined by the digital key attempting during approach to the vehicle, for example, it may first attempt to locate by 4 anchor points, and when the location succeeds, the remaining one anchor point is closed; positioning by 3 anchors can be attempted next, and when positioning is successful, one anchor is turned off again. As to whether or not the positioning by the 4 and 3 anchor points is successful, the positioned position information can be confirmed by the two anchor points closer to the digital key.
In an exemplary embodiment of the present application, as shown in fig. 6, a scene diagram when the digital key is close to the vehicle is shown. During the approach of the digital key to the vehicle, the digital key can be finally positioned triangularly only by UWB2, UWB3 and UWB1, and then the BNCM in the vehicle turns off the power supply of the other two anchor points (UWB4 and UWB5) through mos tubes.
In an exemplary embodiment of the present application, the second number may have a positive correlation with a distance between the digital key and the vehicle (the smaller the distance, the smaller the second number), for example, when the distance between the digital key and the vehicle is 5 meters, the digital key may be attempted to be located using 4 anchor points, and when the distance between the digital key and the vehicle is 2 meters, the digital key may be attempted to be located using 3 anchor points, where the 4 anchor points and the 3 anchor points may be the 4 anchor points and the 3 anchor points that are closest to the digital key. After the digital key is located by the reduced anchor points in the above embodiment, the located position information may also be confirmed by two anchor points closer to the digital key.
In the exemplary embodiment of the application, the number of the opened anchor points is gradually reduced in the process that the digital key approaches the vehicle, so that the aim of saving resources is fulfilled.
In an exemplary embodiment of the present application, the method may further include: when the second number reaches the minimum number of anchor points capable of positioning the digital key, keeping the antenna modules corresponding to the anchor points with the minimum number of anchor points in an opening state and closing the antenna modules corresponding to the anchor points except the anchor points with the minimum number of anchor points in all the anchor points in the subsequent process that the digital key approaches the vehicle.
In the exemplary embodiment of the present application, since the anchor point positioning generally adopts a triangulation method, 3 UWB anchor points need to be used, and therefore, the minimum number of anchor points may be 3, and then the antenna modules corresponding to the 3 anchor points are kept in an open state, and the antenna modules corresponding to the other 2 anchor points are closed.
In an exemplary embodiment of the present application, the adjusting, according to the distance and/or the moving direction, the number of the antenna modules corresponding to the anchor point that are turned on may include:
when the moving direction is the direction far away from the vehicle, the opening number of the antenna modules corresponding to the anchor points is adjusted along with the increase of the distance in the process that the digital key is far away from the vehicle.
In an exemplary embodiment of the present application, during the movement of the digital key, the plurality of anchor points may pre-determine a movement direction of the digital key, and when the pre-determined movement direction is a direction opposite to a direction pointing to the vehicle, it may be determined that the digital key moves from near to far with respect to the vehicle outside the vehicle body, that is, is moving away from the vehicle.
In an exemplary embodiment of the application, during the process that the digital key is far away from the vehicle, the digital key initiates a distance measurement requirement, the BNCM in the vehicle obtains the distance information of each UWB anchor point from the digital key, the BNCM in the vehicle calculates the area, the position and the moving direction of the digital key in real time according to the distance information through an embedded algorithm, and as the distance between the digital key and the vehicle is farther and farther, the number of the opened anchor points can be increased gradually until the anchor points are far away from the near field communication range, and all the anchor points are closed.
In an exemplary embodiment of the present application, the adjusting the number of the antenna modules corresponding to the anchor point with the increase of the distance may include:
when the distance is smaller than or equal to a preset third distance threshold, keeping the antenna modules corresponding to the anchor points of the third number in an open state, and closing the antenna modules corresponding to the anchor points except the anchor points of the third number in all the anchor points; wherein the third number is less than the total number of anchor points;
when the distance is greater than the third distance threshold and less than or equal to a preset fourth distance threshold, keeping all the antenna modules corresponding to the anchor points in an open state;
and when the distance is greater than the fourth distance threshold, closing all the antenna modules corresponding to the anchor points.
In an exemplary embodiment of the present application, the third distance threshold and the fourth distance threshold may be defined according to different application scenarios or requirements, and specific values of the third distance threshold and the fourth distance threshold are not limited, for example, the third distance threshold may include 2 to 4 meters, such as 3 meters, and the fourth distance threshold may include 8 to 10 meters, such as 10 meters.
In an exemplary embodiment of the present application, the third number may be self-defined according to various factors such as the total number of anchor points set on the vehicle, the set position, the positioning accuracy, different third distance thresholds, and the like, for example, when the third distance threshold is 3 meters, the third number may be 3.
In an exemplary embodiment of the present application, as shown in fig. 7, a schematic view of a scenario in which the digital key is away from the vehicle is shown. When the digital key moves from near to far outside the vehicle body relative to the vehicle, after the near field communication is initially established, the digital key can be firstly positioned through 5 anchor points, when the digital key is determined to be in the vehicle or beside the vehicle after the positioning, two anchor points can be closed, the digital key is positioned through 3 anchor points, namely, the UWB antenna module of the 3 anchor points is powered on (such as UWB2, UWB3 and UWB1), the digital key moves away from the vehicle in a certain direction, and the BNCM in the vehicle calculates the direction trend of the movement through a positioning algorithm. When the distance between the digital key and the vehicle (for example, the distance between the digital key and one of the 3 awakened anchor points) reaches 3 meters (a third distance threshold), the BNCM in the vehicle can electrify and awaken UWB modules of all 5 anchor points, and perform high-speed sampling to calculate the distance between each anchor point and the digital key; when the embedded positioning algorithm of BNCM calculates out digital key and each anchor point UWB module when more than 10 meters of distance, can give the UWB antenna module of 5 anchor points all to power down.
In an exemplary embodiment of the present application, the adjusting the number of the antenna modules corresponding to the anchor point according to the distance and/or the moving direction may include:
when the digital key moves around the vehicle within the preset range of the vehicle, keeping the antenna modules corresponding to the anchor points of the fourth number in an open state, and closing the antenna modules corresponding to the anchor points except the anchor points of the fourth number in all the anchor points; wherein the fourth number is less than the total number of anchor points;
and when the distance between the digital key and any anchor point in the moving direction of the digital key is smaller than or equal to a preset fifth distance threshold value, starting the anchor point, and closing the antenna module corresponding to the anchor point with the farthest distance from the digital key in the fourth number of anchor points.
In an exemplary embodiment of the present application, the fourth number may be determined according to the specific distance of the digital key from the vehicle, for example, if the digital key moves around the vehicle in an annular area 7-8 meters from the vehicle, the fourth number may be 5 at this time, i.e., the vehicle may be located through 5 anchor points at this time; if the digital key moves around the vehicle in an annular area of 4-6 meters from the vehicle, then the fourth number may be 4, i.e. the vehicle may be located by 4 anchor points; if the digital key is moved around the vehicle in an annular area of 0-4 meters from the vehicle, the fourth number may then be 3, i.e. the vehicle may then be located by 3 anchor points.
In an exemplary embodiment of the present application, as shown in fig. 8, a schematic view of a scene in which the digital key moves around the vehicle is shown. If the digital key moves in a short distance outside the automobile body, the digital key moves from the automobile head to the automobile tail; can be by UWB2 this moment, UWB3, UWB1 location, in digital key toward the rear of a vehicle removal in-process, BNCM can pass through the direction trend that TOF range finding perception digital key removed in the automobile body, after detecting that digital key removes a location and moves, can open the power supply of anchor point UWB4 on the direction trend of moving, can close the power supply of anchor point UWB2 this moment, through UWB1, UWB3, UWB4 realizes fixing a position digital key position, thereby move the in-process around the vehicle and fix a position through 3 anchor points all the time, need only supply power for the UWB antenna module of 3 anchor points, reach the energy-conserving purpose of system.
In the exemplary embodiment of the application, the opening number of the antenna modules corresponding to the anchor points is adjusted in real time according to different scenes, so that power consumption claim for a vehicle body battery is reduced, power consumption is reduced, energy conservation is realized, and the vehicle battery is correspondingly protected; in addition, the working time of each UWB anchor point is reduced, the loss of the UWB electronic device is reduced, and the service life of the UWB electronic device is prolonged.
The embodiment of the present application further provides a positioning anchor management apparatus 1, as shown in fig. 9, which may include a processor 11 and a computer-readable storage medium 12, where the computer-readable storage medium 12 stores instructions, and when the instructions are executed by the processor 11, the positioning anchor management method is implemented.
In the exemplary embodiment of the present application, any embodiment of the foregoing positioning anchor management method may be applied to the apparatus embodiment, and details are not repeated here.
It will be understood by those of ordinary skill in the art that all or some of the steps of the methods, systems, functional modules/units in the devices disclosed above may be implemented as software, firmware, hardware, or suitable combinations thereof. In a hardware implementation, the division between functional modules/units mentioned in the above description does not necessarily correspond to the division of physical components; for example, one physical component may have multiple functions, or one function or step may be performed by several physical components in cooperation. Some or all of the components may be implemented as software executed by a processor, such as a digital signal processor or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on computer readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media). The term computer storage media includes volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data, as is well known to those of ordinary skill in the art. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, Digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can accessed by a computer. In addition, communication media typically embodies computer readable instructions, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media as known to those skilled in the art.
Claims (10)
1. A positioning anchor point management method is characterized in that the method is applied to a vehicle side, and a plurality of anchor points are preset on the vehicle; the method comprises the following steps:
after the digital key establishes near field communication with the vehicle, positioning the digital key according to the anchor point;
calculating the distance between the digital key and the vehicle and/or the moving direction of the digital key according to the positioning point of the digital key;
and adjusting the opening number of the antenna modules corresponding to the anchor points according to the distance and/or the moving direction.
2. The method of location anchor management according to claim 1, further comprising:
and starting all the anchor points to locate the digital key in the initial period of establishing the near field communication between the digital key and the vehicle.
3. The method according to claim 1 or 2, wherein adjusting the number of antenna modules corresponding to the anchor point according to the distance comprises:
when the digital key is not moved at the positioning point and the distance is less than or equal to a preset first distance threshold value, acquiring a first number of anchor points which are closest to the digital key from all the anchor points, keeping the antenna modules corresponding to the anchor points of the first number in an open state, and closing the antenna modules corresponding to the anchor points except the anchor points of the first number from all the anchor points; wherein the first number is less than the total number of anchor points; the first number is positively correlated with the distance.
4. The positioning anchor management method according to claim 3, further comprising: and when the distance between the digital key and a first anchor point preset in the anchor points is smaller than or equal to a preset second distance threshold value and the vehicle is in a flameout state at present, igniting the vehicle.
5. The method according to claim 1 or 2, wherein adjusting the number of antenna modules corresponding to the anchor point according to the moving direction comprises:
when the moving direction is the direction approaching the vehicle, in the process that the digital key approaches the vehicle, trying to locate the digital key through any plurality of anchor points in all the anchor points, and when the digital key can be located through a second number of anchor points, keeping the antenna modules corresponding to the second number of anchor points in an open state, and closing the antenna modules corresponding to the anchor points except the second number of anchor points in all the anchor points; wherein the second number is less than the total number of anchor points.
6. The method of location anchor management according to claim 5, further comprising: when the second number reaches the minimum number of anchor points capable of positioning the digital key, keeping the antenna modules corresponding to the anchor points with the minimum number of anchor points in an open state and closing the antenna modules corresponding to the anchor points except the anchor points with the minimum number of anchor points in all the anchor points in the process that the digital key is subsequently close to the vehicle.
7. The method according to claim 1 or 2, wherein the adjusting the number of the antenna modules corresponding to the anchor point according to the distance and/or the moving direction comprises:
when the moving direction is the direction far away from the vehicle, the opening number of the antenna modules corresponding to the anchor points is adjusted along with the increase of the distance in the process that the digital key is far away from the vehicle.
8. The method according to claim 7, wherein the adjusting the number of antenna modules corresponding to the anchor point in the increasing distance includes:
when the distance is smaller than or equal to a preset third distance threshold, keeping the antenna modules corresponding to the anchor points of the third number in an open state, and closing the antenna modules corresponding to the anchor points except the anchor points of the third number in all the anchor points; wherein the third number is less than the total number of anchor points;
when the distance is greater than the third distance threshold and less than or equal to a preset fourth distance threshold, keeping all the antenna modules corresponding to the anchor points in an open state;
and when the distance is greater than the fourth distance threshold, closing all the antenna modules corresponding to the anchor points.
9. The method according to claim 1 or 2, wherein the adjusting the number of the antenna modules corresponding to the anchor point according to the distance and/or the moving direction comprises:
when the digital key moves around the vehicle within the preset range of the vehicle, keeping the antenna modules corresponding to the anchor points of the fourth number in an open state, and closing the antenna modules corresponding to the anchor points except the anchor points of the fourth number in all the anchor points; wherein the fourth number is less than the total number of anchor points;
and when the distance between the digital key and any anchor point in the moving direction of the digital key is smaller than or equal to a preset fifth distance threshold value, starting the anchor point, and closing the antenna module corresponding to the anchor point with the farthest distance from the digital key in the fourth number of anchor points.
10. A positioning anchor management device comprising a processor and a computer-readable storage medium having instructions stored thereon, wherein the instructions, when executed by the processor, implement the positioning anchor management method according to any one of claims 1 to 9.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116847280A (en) * | 2023-07-12 | 2023-10-03 | 深圳市快点见科技有限责任公司 | Control method and related device for module to be positioned |
| CN118400225A (en) * | 2024-06-28 | 2024-07-26 | 无锡领跑微电子有限公司 | Multi-node cooperative phase positioning method and system |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20180302859A1 (en) * | 2017-04-13 | 2018-10-18 | Ford Global Technologies, Llc | Reducing power consumption for phone as a key (paak) vehicle system |
| CN113085782A (en) * | 2021-04-26 | 2021-07-09 | 远峰科技股份有限公司 | Digital vehicle key positioning system and method |
| CN113825104A (en) * | 2021-09-03 | 2021-12-21 | 远峰科技股份有限公司 | Digital vehicle key working state management method and system |
| CN114019943A (en) * | 2021-11-05 | 2022-02-08 | 浙江吉利控股集团有限公司 | Energy consumption control method and system for automobile key |
| CN114040331A (en) * | 2021-11-05 | 2022-02-11 | 浙江吉利控股集团有限公司 | Remote control method and system for vehicle |
| CN114302334A (en) * | 2021-12-28 | 2022-04-08 | 重庆集诚汽车电子有限责任公司 | Digital key positioning method, device, medium and equipment based on UWB ranging |
| CN114371777A (en) * | 2021-12-08 | 2022-04-19 | 惠州市德赛西威智能交通技术研究院有限公司 | Vehicle control method and system based on UWB technology |
-
2022
- 2022-06-02 CN CN202210625414.8A patent/CN115022947B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20180302859A1 (en) * | 2017-04-13 | 2018-10-18 | Ford Global Technologies, Llc | Reducing power consumption for phone as a key (paak) vehicle system |
| CN113085782A (en) * | 2021-04-26 | 2021-07-09 | 远峰科技股份有限公司 | Digital vehicle key positioning system and method |
| CN113825104A (en) * | 2021-09-03 | 2021-12-21 | 远峰科技股份有限公司 | Digital vehicle key working state management method and system |
| CN114019943A (en) * | 2021-11-05 | 2022-02-08 | 浙江吉利控股集团有限公司 | Energy consumption control method and system for automobile key |
| CN114040331A (en) * | 2021-11-05 | 2022-02-11 | 浙江吉利控股集团有限公司 | Remote control method and system for vehicle |
| CN114371777A (en) * | 2021-12-08 | 2022-04-19 | 惠州市德赛西威智能交通技术研究院有限公司 | Vehicle control method and system based on UWB technology |
| CN114302334A (en) * | 2021-12-28 | 2022-04-08 | 重庆集诚汽车电子有限责任公司 | Digital key positioning method, device, medium and equipment based on UWB ranging |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116847280A (en) * | 2023-07-12 | 2023-10-03 | 深圳市快点见科技有限责任公司 | Control method and related device for module to be positioned |
| CN118400225A (en) * | 2024-06-28 | 2024-07-26 | 无锡领跑微电子有限公司 | Multi-node cooperative phase positioning method and system |
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|---|---|
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