CN118283571A

CN118283571A - UWB-based vehicle-mounted communication method and device and computing equipment

Info

Publication number: CN118283571A
Application number: CN202311184203.6A
Authority: CN
Inventors: 韩冰; 尚晓宇; 李华生; 侯煜霄; 裴广宇
Original assignee: BYD Co Ltd; BYD Auto Co Ltd
Current assignee: BYD Co Ltd; BYD Auto Co Ltd
Priority date: 2023-09-13
Filing date: 2023-09-13
Publication date: 2024-07-02

Abstract

The embodiment of the application discloses a vehicle-mounted communication method, a device and a computing device based on UWB, wherein the method comprises the following steps: acquiring vehicle data when the vehicle is in a UWB radar mode, wherein in the UWB radar mode, a vehicle-mounted communication circuit of the vehicle comprises a plurality of antenna circuits, and the antenna circuits are all in a radar mode frequency band; under the condition that the vehicle data is detected to meet the preset switching condition, switching the channel frequency bands of part of antenna lines in the plurality of antenna lines in the UWB radar mode to the communication mode frequency band, so that the vehicle is in the UWB radar mode and the communication mode at the same time, and the communication mode frequency band is different from the radar mode frequency band. By the mode, UWB can be used as the multiplexing of the radar mode and the communication mode, so that cost is saved, and communication efficiency is improved.

Description

UWB-based vehicle-mounted communication method and device and computing equipment

Technical Field

The present application relates to the field of automobile control technologies, and in particular, to a vehicle-mounted communication method and apparatus based on UWB and a computing device.

Background

Ultra Wide Band (UWB) is a new technology in the field of wireless communication, and is paid attention to in the field of vehicle-mounted technology, and due to the characteristics of strong multipath resistance, good signal privacy, high confidentiality, strong penetration of narrow pulse obstacles, low cost, portability and the like, UWB technology is increasingly widely applied to intelligent driving of automobiles, and whether positioning, living body detection, sensing functions and the like are adopted, UWB gradually or already replaces the original sensors.

However, the existing technologies are basically that a single module is applied to a single mode, and then a single function is realized, and this mode has high cost and insufficient communication efficiency. With the widespread use of UWB technology in the field of intelligent driving in vehicles, it is highly necessary to consider replacing sensors in the field of vehicles with low-cost UWB technology.

Disclosure of Invention

The embodiment of the application provides a vehicle-mounted communication method, a device and a computing device based on UWB, which can realize multiplexing of UWB as a radar mode and a communication mode, and are beneficial to saving cost and improving communication efficiency.

In a first aspect, an embodiment of the present application provides a vehicle-mounted communication method based on UWB, where the method includes:

Acquiring vehicle data when a vehicle is in a UWB radar mode, wherein in the UWB radar mode, a vehicle-mounted communication circuit of the vehicle comprises a plurality of antenna circuits, and the antenna circuits are all in a radar mode frequency band;

Under the condition that the vehicle data meets the preset switching condition, switching the channel frequency bands of part of the antenna lines in the UWB radar mode to a communication mode frequency band so that the vehicle is in the UWB radar mode and the communication mode at the same time, wherein the communication mode frequency band is different from the radar mode frequency band.

In a second aspect, an embodiment of the present application provides a UWB-based vehicle-mounted communication device, the device including:

The vehicle-mounted communication circuit of the vehicle comprises a plurality of antenna circuits, wherein the antenna circuits are all in a radar mode frequency band;

And the switching unit is used for switching the channel frequency bands of part of the antenna lines in the UWB radar mode to the communication mode frequency band under the condition that the vehicle data are detected to meet the preset switching condition, so that the vehicle is in the UWB radar mode and the communication mode at the same time, and the communication mode frequency band is different from the radar mode frequency band.

In a third aspect, embodiments of the present application provide a computing device, the computing device including a processor, a memory, a bus, and a communication interface, the processor, the communication interface, and the memory being connected by the bus;

the memory is used for storing programs;

The processor is configured to invoke a program stored in the memory through the bus, and execute the method of the first aspect.

According to the embodiment of the application, the vehicle data can be acquired when the vehicle is in the UWB radar mode, and the vehicle-mounted communication circuit of the vehicle comprises a plurality of antenna circuits in the UWB radar mode, wherein the antenna circuits are all in a radar mode frequency band; under the condition that the vehicle data is detected to meet the preset switching condition, switching the channel frequency bands of part of antenna lines in the plurality of antenna lines in the UWB radar mode to the communication mode frequency band, so that the vehicle is in the UWB radar mode and the communication mode at the same time, and the communication mode frequency band is different from the radar mode frequency band. By the mode, UWB can be used as the multiplexing of the radar mode and the communication mode, so that cost is saved, and communication efficiency is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a vehicular communication system based on UWB according to an embodiment of the present application;

fig. 2 is a schematic structural diagram of a vehicle-mounted circuit according to an embodiment of the present application;

FIG. 3 is a schematic flow chart of a UWB-based vehicle-mounted communication method provided by an embodiment of the application;

FIG. 4 is a schematic flow chart of another UWB-based vehicle-mounted communication method provided by an embodiment of the application;

FIG. 5 is a schematic flow chart of another UWB-based vehicle-mounted communication method provided by an embodiment of the application;

fig. 6 is a schematic diagram of an antenna transceiving state according to an embodiment of the present application;

fig. 7 is a schematic structural diagram of a UWB-based vehicle-mounted communication device according to an embodiment of the present application;

fig. 8 is a schematic structural diagram of a computing device according to an embodiment of the present application.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

It should be understood that the terms "comprises" and "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

It is also to be understood that the terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this specification and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It should be further understood that the term "and/or" as used in the present specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes such combinations.

In particular implementations, the computing devices described in embodiments of the application include, but are not limited to, other portable devices such as mobile phones, laptop computers, or tablet computers having touch-sensitive surfaces (e.g., touch screen displays and/or touchpads). It should also be appreciated that in some embodiments, the device is not a portable communication device, but a desktop computer having a touch-sensitive surface (e.g., a touch screen display and/or a touch pad).

In some embodiments, the vehicle-mounted communication device based on UWB may be provided in a computing device, where the computing device may include, but is not limited to, a terminal device, a server, etc. that is communicatively connected to a vehicle, and the computing device may also be a device that is provided on the vehicle, and the computing device may be independent of the vehicle, or may be a component of the vehicle.

According to the vehicle-mounted communication method based on UWB provided by the embodiment of the application, the vehicle data can be acquired and detected, and when the vehicle data is detected to meet the preset switching condition, part of antenna lines in the antenna lines of the current vehicle are switched from the current vehicle-mounted communication mode to another vehicle-mounted communication mode, so that the vehicle is in the two vehicle-mounted communication modes at the same time, and multiplexing of the two vehicle-mounted communication modes is realized. The vehicle-mounted communication mode comprises a UWB radar mode and a communication mode, wherein the UWB radar mode is a mode for acquiring information by taking UWB as a radar sensor, and the communication mode is a mode for realizing functions of data transmission, positioning and the like through wireless communication. In some embodiments, the channel frequency bands of the UWB radar mode and the communication mode are different.

Multiplexing of the UWB radar mode and the communication mode is achieved in vehicle-mounted communication, so that the use of a chip is reduced, the cost is saved, and the communication efficiency is improved.

In one embodiment, vehicle data is acquired while the vehicle is in a UWB radar mode, in which an onboard communication circuit of the vehicle includes a plurality of antenna lines, each of the plurality of antenna lines being in a radar mode frequency band; under the condition that the vehicle data is detected to meet the preset switching condition, switching the channel frequency bands of part of antenna lines in the plurality of antenna lines in the UWB radar mode to the communication mode frequency band, so that the vehicle is in the UWB radar mode and the communication mode at the same time, and the communication mode frequency band is different from the radar mode frequency band. In some embodiments, the UWB radar pattern may be applied to sensing-identified scenarios such as living body detection, trunk sensing on (e.g., opening the trunk when a living body is sensed by a radar sensor), etc.; the communication mode can be applied to the scenes of wireless communication such as data transmission, positioning (such as intelligent car key identification) and the like.

In some embodiments, the channel used in the UWB radar mode is channel14 (because the channel14 frequency band is High, the accuracy of detection of the UWB radar is higher), the channel in the communication mode is channel 9 (the communication mode needs to conform to the IEEE 802.15.4z protocol standard, the UWB device needs to support the channel 9 in the High band, and is also a commonly used channel in the current communication mode), an antenna Tunner is additionally designed on each antenna, and the control interface can control the antenna Tunner through the selection of the mode and the configuration of the antenna path so as to adjust the working frequency band of the antenna, that is, the antenna path in the UWB radar mode is tuned to the channel14 frequency band, and the antenna path in the communication mode is tuned to the channel 9 frequency band.

The specific operating mode state is defined depending on the application scenario used to determine whether to select a UWB radar to dynamically switch with communications or to use a certain operating mode fixedly.

When the antenna is in the communication mode alone, the working state is the same as that of the current prior art, the antenna is tuned to the working frequency band in the communication mode, and other parts are not repeated here.

When the intelligent vehicle key works in the self-adaptive switching state of the UWB radar mode and the communication mode, taking the UWB radar mode as the living body detection in a preset scene, and taking the application scene of the intelligent vehicle key as an example in the communication mode. The method comprises the steps that the function application that a current module is in a UWB radar mode is preset, all antennas are in a channel frequency band of the UWB radar mode, when Bluetooth detects that a car key with a UWB tag is close to a car, the car key is connected, identity authentication and data interaction are carried out, the UWB radar mode is switched to a communication mode within a preset distance threshold (such as about 10 meters), at the moment, one channel of channel frequency band which is still in the UWB radar mode after transmission and reception is reserved, the quantity of antennas is reduced, detection performance is reduced, the sensing and sensing functions of the UWB radar are guaranteed to be still existing, other four channels are tuned through antennas Tunner to enable the car key to work in the communication mode frequency band, and after the car key is located and the function of the car is started, the antennas working in the communication mode are tuned back to the UWB radar mode frequency band to continue living body detection. In certain embodiments, the application scenarios of embodiments of the present application include, but are not limited to, application scenarios with in-vivo detection and car keys, but are directed to various scenarios where UWB radar mode and communication mode are applied.

Multiplexing of the UWB radar mode and the communication mode is achieved in vehicle-mounted communication, chip use is reduced, cost is saved, and communication efficiency is improved.

As shown in fig. 1, in the structural schematic diagram of the UWB-based vehicle-mounted communication system provided in the embodiment of the present application, the UWB-based vehicle-mounted communication system includes a computing device 101 and a vehicle 102, where the computing device 101 is in communication connection with the vehicle 102, the vehicle 102 may acquire vehicle data and send the acquired vehicle data to the computing device 101, and the computing device 101 may detect the vehicle data and switch a channel band of a part of antenna lines in a plurality of antenna lines in a UWB radar mode to a communication mode band when detecting that the vehicle data meets a preset switching condition, so that the vehicle is in the UWB radar mode and the communication mode at the same time. In some embodiments, computing device 101 may be a server or a terminal device.

Before describing a vehicle-mounted communication method based on UWB provided in the embodiment of the present application, a vehicle-mounted circuit implementing the vehicle-mounted communication method may be described, specifically, a vehicle-mounted circuit with 2 transmitting paths and 6 receiving paths is illustrated as an example, and as shown in fig. 2, fig. 2 is a schematic structural diagram of a vehicle-mounted circuit provided in the embodiment of the present application, where the vehicle-mounted circuit includes a digital transceiver 10, a receiving and transmitting unit 20,2 single-pole six-throw switches SP6T30,6 single-pole three-throw switches SP3T40, a control interface 50, an antenna Tunner and an antenna 70.

The digital transceiver 10 is used for receiving and transmitting signals, and is connected to a receiving and transmitting unit 20.

The receiving and transmitting unit 20 is designed with 6 receiving paths (RX 0 to RX 5) and 2 transmitting paths (TX 0& TX 1), and is connected to the antennas through a single-pole multi-throw switch, so that the switching of different paths on different antennas can be realized. The number of the SP6T is 2, one of the two transmission paths is respectively connected, the signal transmission of the TX0 or the TX1 on each antenna can be realized through the switching of a switch, one side of the signal transmission path is connected to the transmission path of the receiving and transmitting unit 20, and the other side of the signal transmission path is connected to the SP3T40.

The number of the SP3T40 is 6, which is equal to the number of the antennas and is correspondingly connected to the antenna 70 unit, and the other side is connected to the receiving and transmitting units 20 and the SP6T30, and each SP3T is connected to one receiving unit and two transmitting units.

The control interface 50 is used for controlling the logic of the whole system, including the working state of the receiving and transmitting channel of the transmitting unit 20, the switching of the SP6T30, the switching of the SP3T40, the tuning of the antenna Tunner, etc.

Antenna Tunner, antenna Tunner is controlled by the signal from control interface 50 to tune the antenna to the operating frequency of the desired mode.

The antenna 70 is used for receiving and transmitting radio frequency signals, and can meet the requirements of all frequency bands supported by UWB, including channels with two bandwidths of 500M and 1.3G, and the working center frequency can be adjusted through the antenna Tunner 60.

Referring to fig. 3, fig. 3 is a schematic flow chart of a UWB-based vehicle communication method according to an embodiment of the present application, where the UWB-based vehicle communication method according to the embodiment of the present application is applicable to a UWB-based vehicle communication device, and the UWB-based vehicle communication device is disposed in a computing device, and the method may at least include the following steps.

S301: and acquiring vehicle data when the vehicle is in a UWB radar mode, wherein the vehicle-mounted communication circuit of the vehicle comprises a plurality of antenna circuits, and the antenna circuits are all in a radar mode frequency band.

In the embodiment of the application, the computing device can acquire the vehicle data when the vehicle is in the UWB radar mode, and the vehicle-mounted communication circuit of the vehicle comprises a plurality of antenna circuits in the UWB radar mode, wherein the antenna circuits are all in a radar mode frequency band. In some embodiments, the UWB radar pattern may include, but is not limited to, living body detection, trunk opening identification, and the like.

In some embodiments, the plurality of antenna lines includes N transmit paths and M receive paths, and the channel frequency bands of the N transmit paths and the M receive paths are radar mode frequency bands, where N, M is a positive integer and N is less than M. For example, the plurality of antenna lines includes 2 transmit paths and 6 receive paths.

S302: under the condition that the vehicle data is detected to meet the preset switching condition, switching the channel frequency bands of part of antenna lines in the UWB radar mode to the communication mode frequency band, so that the vehicle is in the UWB radar mode and the communication mode at the same time.

In the embodiment of the application, the computing device can switch the channel frequency bands of part of the antenna lines in the UWB radar mode to the communication mode frequency band under the condition that the vehicle data is detected to meet the preset switching condition, so that the vehicle is in the UWB radar mode and the communication mode at the same time, and the communication mode frequency band is different from the radar mode frequency band.

In some embodiments, the preset switching conditions corresponding to different application scenarios are different, for example, in an application scenario where the UWB radar mode is in-vivo detection and the communication mode is intelligent vehicle key identification, the preset switching conditions may include that bluetooth detects that a vehicle key with a UWB tag is close to a vehicle, and after the vehicle key is connected and identity authentication and data interaction are performed, the distance between the vehicle key with the UWB tag and the vehicle is detected to be within a preset distance threshold range.

In one embodiment, when the computing device detects that the vehicle data meets the preset switching condition, the computing device switches the channel frequency bands of part of the antenna lines in the UWB radar mode to the communication mode frequency band, and when the computing device detects that the vehicle data meets the preset switching condition, the computing device switches the channel frequency bands of the E transmitting channels and the channel frequency bands of the K receiving channels in the UWB radar mode from the radar mode frequency band to the communication mode frequency band, wherein E, K is a positive integer, and E is smaller than N and K is smaller than M.

In one embodiment, when switching the channel frequency bands of the E transmit paths and the channel frequency bands of the K receive paths in UWB radar mode from radar mode frequency band to communication mode frequency band, the computing device may switch the channel frequency bands of the E transmit paths and the channel frequency bands of the K receive paths in UWB radar mode from radar mode frequency band to communication mode frequency band through a plurality of antenna tuning switches Tunner, where each antenna corresponds to one antenna Tunner.

The computing device may also connect E transmit paths and K receive paths in UWB radar mode to corresponding respective antennas through a plurality of single pole, multi-throw switches.

Each transmitting passage is connected with a single-pole multi-throw switch, and the single-pole multi-throw switch connected with each transmitting passage is used for connecting the corresponding transmitting passage and K receiving passages; each receive path is connected to a single pole, multi-throw switch, and each receive path connected single pole, multi-throw switch is used to connect a corresponding receive path, each transmit path connected single pole, multi-throw switch, and a corresponding antenna Tunner.

The single-pole multi-throw switches connected by the transmitting paths are the same in type, the single-pole multi-throw switches connected by the receiving paths are the same in type, and the single-pole multi-throw switches connected by the transmitting paths are different in type from the multi-throw switches. For example, the type of single pole, multi-throw switch connected to each transmit path is SP3T, and the type of single pole, multi-throw switch connected to each receive path is SP6T.

In one embodiment, the computing device switches the channel frequency bands of the E transmit paths and the channel frequency bands of the K receive paths in the communication mode from the communication mode frequency band to the radar mode frequency band after determining that the vehicle's function in the communication mode is over.

In some embodiments, the functions of the corresponding communication modes in different application scenarios are not the same. For example, in an application scenario in which the UWB radar mode is in-vivo detection and the communication mode is smart car key identification, after the car key completes positioning and turning on the function of the vehicle, the computing device may tune the antenna back to the radar mode frequency band to continue in-vivo detection.

According to the embodiment of the application, the functions in the UWB radar mode and the communication mode can work simultaneously, the working frequency of the antenna can be dynamically adjusted, the full frequency band is not required to be covered, only the current working bandwidth frequency band is supported, and the antenna gain is higher.

Referring to fig. 4, fig. 4 is a schematic flow chart of another UWB-based vehicle communication method provided by the embodiment of the present application, and fig. 4 is a flowchart illustrating the UWB-based vehicle communication method provided by the embodiment of the present application with reference to fig. 2, where the UWB-based vehicle communication method in the embodiment of the present application is applicable to a UWB-based vehicle communication device, and the UWB-based vehicle communication device is disposed in a computing device, and the method may at least include the following steps.

S401: in the UWB radar mode, the vehicle is configured with ANT0 and ANT1 as the transmit paths TX, ANT2 to ANT 5 as the receive paths RX, and the channel frequency at which the antenna operates as channel14 for radar function detection.

Specifically, the control interface 50 controls the switch to connect ANT0 to TX0 and ANT1 to TX1, and ANT2, ANT3, ANT4, ANT5 to connect RX2, RX3, RX4, RX5, respectively, wherein RX0 and RX1 are not used for the subsequent mode switching. In some embodiments, the computing device may also configure the number of antennas used and the antenna paths themselves, and the vehicle circuitry architecture presented in fig. 2 is flexibly customizable. The frequency of the channel of the antenna is channel14, the bandwidth is 500MHz, the detection of the radar function related to the living body detection in the cabin is carried out, the channel14 (the operating frequency is 9984 MHz) is selected as the operating frequency of the radar mode, the channel is the channel with the highest frequency, the channel is used for radar detection with higher precision, and the reliability of the result detection is also increased by MIMO multi-antenna transceiving.

S402: when the Bluetooth detects the car key, the Bluetooth connects the car key and performs identity authentication and data interaction.

When the vehicle is in a remote place, the vehicle can be connected with the Bluetooth of the vehicle key and perform identity authentication and data interaction, and after the identity authentication is successful and the data interaction is finished, the step S403 can be executed.

S403: when the distance between the vehicle key and the vehicle is detected to be within the preset distance threshold range, the transmitting path antennas ANT0 and TX0 are kept unchanged, the receiving paths ANT5 and RX5 are kept unchanged, the antenna operating frequency is kept unchanged and remains as channel 14, and step S404 is executed.

When it is detected that the distance between the vehicle key and the vehicle is within the preset distance threshold range, in order to ensure that the radar sensing and communication functions exist at the same time, the transmitting path antennas ANT0 and TX0 are kept unchanged, the receiving paths ANT5 and RX5 are kept unchanged, the channel frequency of the antenna operation is kept unchanged and remains as channel 14, the original 6-path antenna radar detection is switched to 2-path antennas, the function of radar detection in a short time in the communication mode is ensured to remain, and the change of other 4-path antennas refers to step S404.

The rough distance between the digital car key and the car is judged through the Bluetooth RSSI signal intensity value, the UWB communication positioning mode is added after the Bluetooth judges that the car key is within the range of about 10-20 meters from the car, and the functions of intelligent car key welcome unlocking and the like are achieved through accurate ranging.

S404: the antenna Tunner of the ANT1, the ANT2, the ANT3 and the ANT4 is driven by the control interface signal to tune the channel frequency of the antenna work center to be channel 9, so that the ANT1 is TX, and the ANTs 2 to 4 are RX, and the channel frequency band of part of the antenna line is switched to the communication mode frequency band.

The antenna Tunner of the antenna working center of the ANT1, the ANT2, the ANT3 and the ANT4 is driven by the control interface signal to tune the channel frequency of the antenna working center to be channel 9, the bandwidth to be 500MHz, and the UWB vehicle key communication positioning function is completed, wherein the channel 9 (working frequency is 7987.2 MHz) is selected because the channel 9 is a forced support frequency band in the IEEE 802.15.4z standard, and the existing UWB chip modules all support the channel 9 and can be well compatible. The antenna ANT1 is still TX1, the ANT 2-4 is still RX 2-4, and three paths of receiving ensures the positioning of the car key.

S405: after the positioning function is completed, the ANT 1-4 is driven and controlled by a control signal to tune back the channel frequency of the channel 14 so as to switch the ANT 1-4 from the communication mode frequency band to the radar mode frequency band.

After judging that the communication positioning function is completed by, for example, whether the door is successfully opened, the control signal drives the 4-way antennas ANT1, ANT2, ANT3, ANT4 for the communication mode in the control step S404 to tune back to the radar mode of the channel 14.

Referring to fig. 5, fig. 5 is a schematic flow chart of another UWB-based vehicle-mounted communication method according to an embodiment of the present application, and fig. 5 is a schematic flow chart illustrating a vehicle-mounted communication method according to an embodiment of the present application, in which the UWB-based vehicle-mounted communication method according to the embodiment of the present application is applicable to a UWB-based vehicle-mounted communication device, and the UWB-based vehicle-mounted communication device is disposed in a computing device, and the method may at least include the following steps.

S501: when six antennae of the ANT 0-ANT 5 of the vehicle work in the radar mode frequency band of the channel 14, one of the antennae TX0 (or TX 1) works in a transmitting state, and transmitting signals are sequentially transmitted on the antennae of the ANT 0-ANT 5 through SP6T according to preset interval time (for example, 3 seconds).

S502: when the TX0 is operated in the transmitting state at ANT0, the 5 antennas ANT1 to ANT5 are simultaneously in the receiving state, and the TX0 is switched to other antennas through the SP6T switch after one transceiving period is completed.

The schematic diagrams of the 5 paths of antennas ANT1 to ANT5 in the receiving state are shown in fig. 6, the coverage areas of different antennas are different, fig. 6 is a schematic diagram of the receiving and transmitting state of the antenna according to the embodiment of the present application, and fig. 6 is a schematic diagram of a transmitting path for transmitting signals and a multipath receiving antenna for receiving signals.

S503: and after the antenna is switched, continuing to detect according to the previous step S502, and finally obtaining a desired result in the UWB radar mode.

According to the embodiment of the application, under the condition that the vehicle is in the UWB radar mode, each transmitting path can sequentially transmit signals in turn according to the preset interval time, the antenna of each receiving path can complete receiving in one receiving and transmitting period, and after one receiving and transmitting period is completed, the antenna of each receiving path is switched to other antennas through the SP6T switch, so that a result in the radar mode is obtained. Because the coverage direction and range of each channel antenna are different, the coverage area of detection can be increased by alternately transmitting on different antennas, for example, 6 channels of antennas can completely cover all directions in the front, back, left and right of the vehicle, and the accuracy and reliability of detection can be increased by receiving multiple antennas.

Referring to fig. 7, fig. 7 is a schematic structural diagram of a UWB-based vehicle-mounted communication device according to an embodiment of the present application, and the UWB-based vehicle-mounted communication device according to the present embodiment may include an acquisition unit 701 and a switching unit 702, wherein,

An acquiring unit 701, configured to acquire vehicle data when a vehicle is in a UWB radar mode, where an on-vehicle communication circuit of the vehicle includes a plurality of antenna lines, and the plurality of antenna lines are all in a radar mode frequency band;

And the switching unit 702 is configured to switch, when it is detected that the vehicle data meets a preset switching condition, a channel frequency band of a part of antenna lines in the plurality of antenna lines in the UWB radar mode to a communication mode frequency band, so that the vehicle is in the UWB radar mode and the communication mode at the same time, and the communication mode frequency band is different from the radar mode frequency band.

Further, the plurality of antenna lines include N transmitting paths and M receiving paths, and channel frequency bands of the N transmitting paths and the M receiving paths are the radar mode frequency bands, where N, M is a positive integer, and N is smaller than M.

Further, when the switching unit 702 detects that the vehicle data meets a preset switching condition, the switching unit is specifically configured to, when switching a channel band of a part of the antenna lines in the UWB radar mode to a communication mode band:

Under the condition that the vehicle data are detected to meet the preset switching conditions, switching the channel frequency bands of E transmitting paths and the channel frequency bands of K receiving paths in the UWB radar mode from the radar mode frequency band to the communication mode frequency band, wherein E, K is a positive integer, E is smaller than N, and K is smaller than M.

Further, when the switching unit 702 switches the channel frequency bands of the E transmit paths and the channel frequency bands of the K receive paths in the UWB radar mode from the radar mode frequency band to the communication mode frequency band, the switching unit is specifically configured to:

and switching the channel frequency bands of E transmitting paths and the channel frequency bands of K receiving paths in the UWB radar mode from the radar mode frequency band to the communication mode frequency band through a plurality of antenna tuning switches Tunner, wherein each antenna corresponds to one antenna Tunner.

Further, the switching unit 702 is further configured to:

E transmitting paths and K receiving paths in the UWB radar mode are connected to corresponding antennas through a plurality of single-pole multi-throw switches.

Further, each transmitting path is connected with a single-pole multi-throw switch, and the single-pole multi-throw switch connected with each transmitting path is used for connecting the corresponding transmitting path and K receiving paths;

Each receive path is connected to a single pole, multi-throw switch, which is used to connect the corresponding receive path, the single pole, multi-throw switch to which each transmit path is connected, and the corresponding antenna Tunner.

Further, the types of single-pole multi-throw switches connected to each transmit path are the same, and the types of single-pole multi-throw switches connected to each receive path are the same, and the types of single-pole multi-throw switches connected to the transmit paths are different from the types of multi-throw switches.

Further, the switching unit 702 is further configured to:

And after judging that the function of the vehicle in the communication mode is finished, switching the channel frequency bands of E transmitting paths and the channel frequency bands of K receiving paths in the communication mode from the communication mode frequency band to the radar mode frequency band.

In the embodiment of the application, the computing equipment can acquire vehicle data when the vehicle is in a UWB radar mode, and the vehicle-mounted communication circuit of the vehicle comprises a plurality of antenna circuits in the UWB radar mode, wherein the antenna circuits are all in a radar mode frequency band; under the condition that the vehicle data is detected to meet the preset switching condition, switching the channel frequency bands of part of antenna lines in the plurality of antenna lines in the UWB radar mode to the communication mode frequency band, so that the vehicle is in the UWB radar mode and the communication mode at the same time, and the communication mode frequency band is different from the radar mode frequency band. By the mode, UWB can be used as the multiplexing of the radar mode and the communication mode, so that cost is saved, and communication efficiency is improved.

Referring to fig. 8, fig. 8 is a schematic structural diagram of a computing device according to an embodiment of the present application. The computing device in this embodiment as shown may include: one or more processors 801, a memory 802, a bus 803, and a communication interface 804, the processors 801, the communication interface 804, and the memory 802 being connected by the bus 803; the memory 802 is used for storing programs; a processor 801 for calling a program stored in the memory through a bus 803, and executing the steps of:

Further, when the processor 801 detects that the vehicle data meets a preset switching condition, it is specifically configured to, when switching a channel band of a part of the antenna lines in the UWB radar mode to a communication mode band:

Further, when the processor 801 switches the channel frequency bands of the E transmit paths and the channel frequency bands of the K receive paths in the UWB radar mode from the radar mode frequency band to the communication mode frequency band, the processor is specifically configured to:

Further, the processor 801 is further configured to:

It should be appreciated that in embodiments of the present application, the Processor 801 may be a central processing unit (Central Processing Unit, CPU), which may also be other general purpose processors, digital signal processors (DIGITAL SIGNAL processors, DSPs), application SPECIFIC INTEGRATED Circuits (ASICs), off-the-shelf Programmable gate arrays (Field-Programmable GATE ARRAY, FPGA) or other Programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

The memory 802 may include read only memory and random access memory, and provides instructions and data to the processor 801. A portion of memory 802 may also include non-volatile random access memory. For example, the memory 802 may also store information of device type.

In a specific implementation, the processor 801 described in the embodiment of the present application may execute the implementation manner described in the UWB-based vehicle-mounted communication method provided in the embodiment of the present application, and may also execute the implementation manner of the UWB-based vehicle-mounted communication device described in the embodiment of the present application, which is not described herein.

Those of ordinary skill in the art will appreciate that the elements and algorithm steps described in connection with the embodiments disclosed herein may be embodied in electronic hardware, in computer software, or in a combination of the two, and that the elements and steps of the examples have been generally described in terms of function in the foregoing description to clearly illustrate the interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It will be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working procedures of the terminal and the unit described above may refer to the corresponding procedures in the foregoing method embodiments, which are not repeated herein.

In the several embodiments provided by the present application, it should be understood that the disclosed computing devices and methods may be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. In addition, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices, or elements, or may be an electrical, mechanical, or other form of connection.

The steps in the method of the embodiment of the application can be sequentially adjusted, combined and deleted according to actual needs.

The units in the terminal of the embodiment of the application can be combined, divided and deleted according to actual needs.

The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the embodiment of the present application.

In addition, each functional unit in the embodiments of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.

The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application is essentially or a part contributing to the prior art, or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a usb disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

While the application has been described with reference to certain preferred embodiments, it will be understood by those skilled in the art that various changes and substitutions of equivalents may be made and equivalents will be apparent to those skilled in the art without departing from the scope of the application. Therefore, the protection scope of the application is subject to the protection scope of the claims.

Claims

1. A UWB-based vehicle communication method, the method comprising:

2. The method of claim 1, wherein the plurality of antenna lines includes N transmit paths and M receive paths, and wherein the channel frequency bands of the N transmit paths and the M receive paths are the radar mode frequency bands, wherein N, M is a positive integer and N is less than M.

3. The method according to claim 2, wherein switching the channel band of a part of the plurality of antenna lines in the UWB radar mode to the communication mode band in the case where it is detected that the vehicle data satisfies a preset switching condition, comprises:

4. A method according to claim 3, wherein said switching the channel frequency bands of E transmit paths and the channel frequency bands of K receive paths in the UWB radar mode from the radar mode frequency band to the communication mode frequency band comprises:

5. The method according to claim 4, wherein the method further comprises:

6. The method of claim 5, wherein the step of determining the position of the probe is performed,

Each transmitting passage is connected with a single-pole multi-throw switch, and the single-pole multi-throw switch connected with each transmitting passage is used for connecting the corresponding transmitting passage and K receiving passages;

7. The method of claim 6, wherein the step of providing the first layer comprises,

The single-pole multi-throw switches connected by the transmitting paths are the same in type, the single-pole multi-throw switches connected by the receiving paths are the same in type, and the single-pole multi-throw switches connected by the transmitting paths are different in type from the multi-throw switches.

8. The method according to claim 3 or 4, characterized in that the method further comprises:

9. A UWB-based vehicle communication device, the device comprising:

10. A computing device comprising a processor, a memory, a bus, and a communication interface, the processor, the communication interface, and the memory being connected by the bus;

the memory is used for storing programs;

The processor is configured to invoke a program stored in the memory via the bus to perform the method of any of the claims 1-8.