Detection device, terminal equipment and vehicle

Abstract

The utility model discloses a detection device, terminal equipment and a vehicle, and relates to the technical field of communication. The detection device is applied to a first vehicle and comprises a first processing unit and at least two antennas. The detection device is not provided with a plurality of processing units for respectively processing signals received by the at least two antennas, but the first processing unit is used for processing the signals received by part of or all of the at least two antennas, on one hand, the antennas are simple in structure and not easy to damage, so that the reliability of the detection device can be improved, and on the other hand, the detection device is convenient to use. A large number of processing units can be saved, and the cost of the detection device can be reduced as much as possible. In addition, the antenna is small in size, so that the installation position of the antenna in the first vehicle is convenient to select, and the detection device is convenient to install in the first vehicle. In a word, the detection device provided by the utility model has the characteristics of high reliability, low cost, small size, convenience in installation and the like.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of communication technology, in particular to a detection device, a terminal device and a vehicle. BACKGROUND

[0002] A digital key is a kind of intelligent key system that uses digital technology and wireless communication technology to digitize traditional physical keys to realize the operation of unlocking, locking, starting and the like of specific devices, vehicles, houses and the like. It mainly uses smart phones, smart watches and the like as carriers and interacts with target devices through Bluetooth, near field communication (NFC), ultra-wideband (UWB) and the like. For example, a car digital key can allow the owner to control the unlocking, locking, starting and the like of the vehicle through a mobile phone and the like, and a home digital key can allow the resident to open the door through a mobile phone.

[0003] However, the prerequisite for the digital key to realize specific functions is that the target can perceive the digital key through wireless communication technology. Therefore, how to simply and effectively perceive the digital key is a problem that needs to be solved at present. CONTENT OF THE UTILITY MODEL

[0004] The present application provides a detection device, a terminal device and a vehicle. The detection device provided by the present application directly connects multiple antennas and a processor, thereby improving the reliability of the detection device and reducing the cost of the detection device.

[0005] In a first aspect, the present application provides a detection device applied to a first vehicle, comprising: a first processing unit and at least two antennas. The at least two antennas are arranged on the body of the first vehicle, and the first processing unit is connected with the at least two antennas respectively. Each of the at least two antennas is used for receiving a signal and outputting an electric signal, and the first processing unit is used for determining the positional relationship between a target and the first vehicle based on the first electric signal output by part or all of the at least two antennas.

[0006] In the present application, the first processing unit is connected with at least two antennas respectively, and the at least two antennas are arranged on the vehicle body of the first vehicle, so that the first processor can obtain signals from part or all of the at least two antennas, and determine the positional relationship between the target and the first vehicle based on the first electric signal output by part or all of the at least two antennas. The at least two antennas in the detection device can be arranged at different positions of the first vehicle to receive signals from different directions of the first vehicle, ensuring that the detection device can obtain signals from different directions of the first vehicle in time and avoiding signal omission. The detection device does not arrange multiple processing units to process the signals received by the at least two antennas, but uses the first processing unit to process the signals received by part or all of the at least two antennas. On the one hand, since the antenna structure is simple and not easy to be damaged, the reliability of the detection device can be improved. On the other hand, a large number of processing units can be saved, and the cost of the detection device can be reduced as much as possible. In addition, since the antenna has a small volume, it is convenient to select the installation position of the antenna on the first vehicle, thereby facilitating the installation of the detection device on the first vehicle. In summary, the detection device provided by the present application has the characteristics of high reliability, low cost, small size and easy installation.

[0007] Optionally, the target is, for example, a device installed with a digital key, such as a smart phone, a smart watch, a car key card or a car key buckle, etc.

[0008] Optionally, the positional relationship between the target and the first vehicle includes the distance and the direction between the target and the first vehicle.

[0009] In a possible implementation, the positions of the at least two antennas on the first vehicle are determined by the vehicle model of the first vehicle.

[0010] The vehicle model of the first vehicle exemplarily includes a sedan, a sport utility vehicle (SUV), a multi-purpose vehicle (MPV), a sports car, a pickup truck or a new energy vehicle, etc. Further, the sedan can also be classified into a micro sedan, a small sedan, a compact sedan, a medium-sized sedan, a large sedan, etc., the SUV can also be classified into a small SUV, a compact SUV, a medium-sized SUV, a medium-large SUV, a large SUV, etc., the MPV can also be classified into a compact MPV, a medium-sized MPV, a large MPV, etc., the sports car can also be classified into an entry-level sports car, a medium-level sports car, a super sports car, an ultimate sports car, etc., the pickup truck can also be classified into a small pickup truck, a medium-sized pickup truck, a large pickup truck, etc. In addition, the vehicle can also be classified according to the length, width and height of the vehicle.

[0011] In the above embodiment, the positions of the at least two antennas on the first vehicle are determined by the vehicle model of the first vehicle, so that the at least two antennas can be reasonably distributed according to the vehicle model of the first vehicle, and the at least two antennas can accurately and effectively receive signals to determine the positional relationship between the target and the first vehicle.

[0012] In another possible implementation, the at least two antennas include two antennas, and the two antennas are arranged on side doors of the first vehicle.

[0013] In the above embodiment, the two antennas are arranged on the side doors of the first vehicle, for example, the two antennas are arranged on the left side door and the right side door of the first vehicle respectively. Arranging the two antennas on the side doors of the first vehicle facilitates the at least two antennas to receive signals from both sides of the vehicle, and ensures that the target approaching / away from the first vehicle from any side of the vehicle can timely obtain signals of the target, thereby determining the positional relationship between the target and the first vehicle.

[0014] Optionally, in the case that the at least two antennas include two antennas, the two antennas can also be arranged on side windows of the first vehicle, for example, the two antennas are arranged on the quarter windows of the first vehicle respectively. For some vehicle models without side windows, the two antennas can also be arranged on the B-pillar of the first vehicle.

[0015] In another possible implementation, the at least two antennas include four antennas, and the four antennas are arranged on the front windshield, the left front quarter window, the right front quarter window and the rear windshield of the first vehicle respectively.

[0016] In the above embodiment, the four antennas are arranged on the front windshield, the left front quarter window, the right front quarter window and the rear windshield of the first vehicle respectively, so that the detection device can receive signals from around the first vehicle through the four antennas respectively, and ensures that the target approaching / away from the first vehicle from any direction of the vehicle can timely obtain signals of the target, thereby determining the positional relationship between the target and the first vehicle. In addition, arranging the four antennas on the respective glass of the first vehicle also facilitates receiving signals from inside the vehicle, thereby determining whether the target is located inside the first vehicle.

[0017] In another possible implementation, the at least two antennas further include a first antenna, and the first antenna is arranged on a roof of the first vehicle.

[0018] In the above embodiment, the first antenna is arranged on the roof of the first vehicle, which facilitates receiving signals from inside the vehicle, thereby determining whether the target is located inside the first vehicle.

[0019] Optionally, if the first vehicle includes a sunroof, the first antenna can also be arranged on the sunroof of the first vehicle.

[0020] In another possible implementation, the at least two antennas include five antennas, and the five antennas are respectively arranged at the left side of the front bumper, the right side of the front bumper, the left side of the rear bumper, the right side of the rear bumper and the roof of the first vehicle.

[0021] In the above implementation, the five antennas are respectively arranged at the left side of the front bumper, the right side of the front bumper, the left side of the rear bumper, the right side of the rear bumper and the roof of the first vehicle, so that the detection device can receive signals from the surroundings of the first vehicle through the five antennas, and ensure that the target can be timely acquired when approaching / leaving the first vehicle from any direction of the target, thereby determining the positional relationship between the target and the first vehicle. The antenna arranged on the roof of the first vehicle is used to receive signals from inside the first vehicle to determine whether the target is located inside the first vehicle.

[0022] In another possible implementation, the detection device further includes a switching unit, and the switching unit is configured to connect the first processing unit and the at least two antennas, and control the signal transmission of one or more antennas in the at least two antennas to be turned on or turned off.

[0023] In the above implementation, the switching unit is configured to connect the first processing unit and the at least two antennas, and control the signal transmission of one or more antennas in the at least two antennas to be turned on or turned off. For example, when the signal of the antenna is in the turned-on state, the first processing unit can receive the signal from the antenna. For another example, when the signal of the antenna is in the turned-off state, the first processing unit cannot receive the signal from the antenna. Therefore, the switching unit can control one or more antennas in the at least two antennas to receive signals and transmit the received signals to the first processing unit, thereby determining the positional relationship between the target and the first vehicle.

[0024] Optionally, when the switching unit controls the signal transmission of the plurality of antennas in the at least two antennas to be in the turned-on state, the first electrical signal received by the first processing unit includes the electrical signals output by the plurality of antennas, and it can also be understood that the first electrical signal is obtained by superimposing the electrical signals output by the plurality of antennas.

[0025] In another possible implementation, the at least two antennas are divided into a plurality of antenna combinations, and each antenna combination includes at least one antenna. The first processing unit is further configured to control the switching unit, so that the plurality of antenna combinations are connected to the first processing unit in a first order.

[0026] In the above embodiments, the division manner of dividing the at least two antennas into a plurality of antenna combinations is not limited in the application. For example, the at least two antennas can be divided according to the installation positions of the antennas, for example, a plurality of adjacent antennas can be divided into one antenna combination. One antenna or a plurality of antennas can be included in an antenna combination, for example, one antenna, two antennas or three antennas are included in an antenna combination. Different antenna combinations can also include different numbers of antennas, for example, a plurality of antenna combinations include a first antenna combination and a second antenna combination, wherein the first antenna combination includes two antennas and the second antenna combination includes three antennas. The first order can be preset or customized, and the application does not limit this. In the above embodiments, the at least two antennas are divided into a plurality of antenna combinations, and the plurality of antenna combinations are controlled to be connected to the first processing unit in the first order, so that the connection relationship between the first processing unit and the antennas has high degree of freedom, which can adapt to the needs of various vehicle models or various scenes, thereby improving the practicability and reliability of the detection device.

[0027] In another possible implementation, the detection device further includes at least one second processing unit and an antenna connected to the second processing unit. The antenna connected to the second processing unit is configured to receive a signal and output a second electric signal, and the second processing unit is configured to determine a first distance between the antenna connected to the second processing unit and the target based on the second electric signal. The first processing unit is further configured to determine the positional relationship between the target and the first vehicle based on the first distance determined by the at least one second processing unit and / or the first electric signal. The first processing unit is specifically configured to control the first vehicle to perform a first operation based on the positional relationship between the target and the first vehicle.

[0028] In the above embodiments, the second processing unit is directly connected to the antenna, and the second processing unit is configured to process the second electric signal output by the antenna connected thereto and generate the first distance between the target and the antenna. The first processing unit is configured to determine the positional relationship between the target and the first vehicle based on the first distance and / or the first electric signal, so that the determined positional relationship is more accurate and reliable. The first processing unit is further configured to control the first vehicle to perform a first operation based on the positional relationship between the target and the first vehicle, for example, when the distance between the target and the first vehicle is less than or equal to the first distance, the first vehicle is controlled to be unlocked. For another example, when the distance between the target and the first vehicle is greater than the first distance, the first vehicle is controlled to be locked.

[0029] Optionally, the first processing unit is further configured to control the plurality of second processing units to determine the first distance based on the second electric signal in a second order. The second order can be preset or customized, and the application does not limit this.

[0030] In another possible implementation, the first processing unit controls the first vehicle to perform a first operation when the signal strength of the first electric signal is greater than a first threshold.

[0031] The first threshold can be preset or customized, and the present application does not make any limitation. For example, the first threshold can be determined according to the model of the antenna, the signal characteristics of the target, or the vehicle model.

[0032] Optionally, the first processing unit controls the first vehicle to perform a second operation when the signal strength of the first electric signal is less than or equal to the first threshold. The second operation includes locking the vehicle, closing the door, or turning off the vehicle, etc.

[0033] In a second aspect, the embodiments of the present application further provide an electronic device, which comprises the detection device of any one of the first aspect.

[0034] In a third aspect, the embodiments of the present application further provide a detection system, which comprises the detection device of any one of the first aspect.

[0035] In a fourth aspect, the embodiments of the present application further provide a vehicle, which comprises the detection device of any one of the first aspect, or the electronic device of any one of the second aspect, or the detection system of any one of the third aspect.

[0036] The technical effects of the schemes of the second aspect to the fourth aspect of the present application can be correspondingly referred to the technical effects of the schemes of the first aspect. BRIEF DESCRIPTION OF DRAWINGS

[0037] In order to more clearly illustrate the technical schemes of the embodiments of the present application, the drawings needed in the embodiments of the present application will be briefly introduced as follows. Obviously, the drawings described below are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0038] Figure 1 A scene schematic diagram of a digital key provided by the present application;

[0039] Figure 2A A scene schematic diagram of another digital key provided by the present application;

[0040] Figure 2B A scene schematic diagram of another digital key provided by the present application;

[0041] Figure 3AA structural schematic diagram of a detection device provided in the present application;

[0042] Figure 3B A structural schematic diagram of another detection device provided in the present application;

[0043] Figure 4 A structural schematic diagram of another detection device provided in the present application;

[0044] Figure 5A A structural schematic diagram of another detection device provided in the present application;

[0045] Figure 5B A structural schematic diagram of another detection device provided in the present application;

[0046] Figure 6 A schematic diagram of layout of at least two antennas on a first vehicle provided in the present application;

[0047] Figure 7 A schematic diagram of layout of at least two antennas on a first vehicle provided in the present application;

[0048] Figure 8 A schematic diagram of layout of at least two antennas on a first vehicle provided in the present application;

[0049] Figure 9 A schematic diagram of layout of at least two antennas on a first vehicle provided in the present application;

[0050] Figures 10A to 10D A schematic diagram of layout of at least two antennas on a first vehicle provided in the present application;

[0051] Figures 11A to 11C A schematic diagram of connection of antennas in sequence by a first processing unit provided in an embodiment of the present application;

[0052] Figure 12 A structural schematic diagram of another detection device provided in the present application;

[0053] Figure 13A A schematic diagram of layout of a detection device on a first vehicle provided in the present application;

[0054] Figure 13B A structural schematic diagram of a node provided in the present application;

[0055] Figures 14 to 16 A schematic diagram of polling of a received signal provided in the present application;

[0056] Figure 17 A schematic block diagram of a detection device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0057] The terms "first", "second", and the like in the description and in the claims of the present application and in the drawings herein are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. In the present application, "at least one" means one or more; "multiple" means two or more. It is to be understood that the use of the term "or" in the present application can be used as a function of "and" in some instances. In addition, the terms "comprising", "having", "including" and "containing" are to be construed as open-ended terms (i.e., meaning "including, but not limited to") unless otherwise noted. It is intended that the application encompass multiple combinations of the elements specified herein including combinations of elements not expressly listed herein. It is also intended that the application encompass singular as well as plural combinations of the elements specified herein. It is further intended that the application encompass all such possible combinations.

[0058] The following terms are first explained in the present application. It should be noted that these explanations are for the convenience of understanding by those skilled in the art, and are not intended to limit the scope of protection required by the present application.

[0059] (1) Vehicle

[0060] The vehicle in the present application refers to an apparatus including a power device and a traction device. Exemplarily, the vehicle can be a vehicle (such as a commercial vehicle, a passenger vehicle, a motorcycle, a flying vehicle, an electric vehicle, a train, etc.), an industrial vehicle (such as a forklift, a trailer, a tractor, etc.), an engineering vehicle (such as an excavator, a bulldozer, a crane, etc.), or an agricultural apparatus (such as a mower, a harvester, etc.), etc. The vehicle can also refer to a robot (an automated guided vehicle (AGV), a walkable conversational robot, a service robot, etc.), an industrial apparatus (an industrial robot, a mechanical arm, etc.), or a leisure and entertainment apparatus (a virtual reality (VR) apparatus, a mixed reality (MR) apparatus, or a 4D cinema cabin), etc.

[0061] (2) Terminal apparatus

[0062] The terminal device can also be referred to as user equipment (UE). The terminal device can be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a smart phone, a handset, a wireless local loop (WLL) station, a personal digital assistant (PDA), a handheld device having wireless communication function, a computing device or other devices connected to a wireless modem, a vehicle-mounted terminal device, a wearable device, a drone device, or a terminal in Internet of Things, Internet of Vehicles, 5G mobile communication network, and future network, or a terminal in future evolved public land mobile network (PLMN), etc. For example, the terminal device can be a virtual reality (VR) terminal, an augmented reality (AR) terminal, a wireless terminal in industrial control, a wireless terminal in unmanned driving, a wireless terminal in remote medical treatment, a wireless terminal in smart grid, a wireless terminal in transportation safety, a wireless terminal in smart city, a wireless terminal in smart home, etc. The embodiments of the present application do not make any limitation in this regard.

[0063] (3) Digital key.

[0064] The digital key is a technology that realizes identity confirmation between devices by means of communication technology, thereby helping users to realize unlocking / locking and other functions. For example, the digital key is used to realize identity confirmation between a terminal device and a vehicle, thereby helping users to realize vehicle unlocking / vehicle locking and other functions. The digital key has many important functions. Taking the vehicle as an example, the digital key can improve the convenience of the vehicle owner using the vehicle, so that the vehicle owner can easily realize the unlocking, locking, starting and stopping of the vehicle without carrying the traditional physical key. The digital key can also provide personalized vehicle settings according to the use habits of the vehicle owner. In addition, the digital key performs well in vehicle sharing and permission management, for example, it is convenient for the operator to manage the rental permission of the vehicle, and the vehicle owner can set the permission range for others to use the vehicle.

[0065] The hardware part of the digital key is composed of a terminal device and a vehicle-side device. The terminal device and the vehicle-side device have relevant communication capabilities and can establish a communication connection. For example, the terminal device can send signals through communication technologies such as star flash, Bluetooth, NFC, or UWB. Correspondingly, the vehicle-side device can receive star flash signals, Bluetooth signals, NFC signals, or UWB signals. Further, the vehicle-side device can process the received signals and generate relevant control information. For example, the vehicle-side device processes the received signals to generate control information such as vehicle unlocking, vehicle locking, engine starting, and the like.

[0066] Optionally, the signal sent by the terminal device can use an encryption algorithm, including one or more of the advanced encryption standard (AES), the Rivest Shamir Adleman (RSA) algorithm.

[0067] Optionally, the digital key technology can also be applied to other devices, such as access control, gate, or car stopper. When the digital key technology is applied to other devices, the first vehicle in the present application can be replaced by other devices, such as access control, gate, or car stopper. Correspondingly, the vehicle-side device in the present application can be replaced by an access control-side device, a gate-side device, or a car stopper-side device, and the like. In summary, the present application takes the vehicle as an example to illustrate the digital key. The device provided by the present application can also be applied to other devices.

[0068] Please refer to Figure 1 , Figure 1 for a scene diagram of a digital key provided by the present application. As shown in the digital key scene Figure 1 , the digital key scene includes a first vehicle 101 and a target 102. The first vehicle 101 is provided with multiple nodes, such as node 1, node 2, node 3, and node 4. The multiple nodes provided on the first vehicle 101 are used to receive signals and process the signals. The target 102 is, for example, a smart watch. The target 102 can send signals, which include identity information of the terminal device, control information, and the like. After receiving the signals, the multiple nodes on the first vehicle 101 can first perform signal analysis and identity verification. If the identity verification is passed, the multiple nodes can generate corresponding control signals based on the strength of the signals and the control information in the signals to control the first vehicle 101 to perform relevant operations, such as unlocking, locking, turning on the welcome light, starting, or turning off, and the like.

[0069] Please refer to Figure 2A and Figure 2B, the terminal device carrying the digital key, e.g., the target 102, enters the area covered by the dashed circle, the first vehicle 101 can perform relevant operations based on the signal sent by the target 102, e.g., the door of the first vehicle 101 is automatically opened as shown in Figure 2A . For another example, when the user leaves the area covered by the dashed circle, the door of the first vehicle 101 is automatically closed.

[0070] Optionally, the dashed circle shown in Figure 2A and Figure 2B is exemplary, and in the implementation of the scheme, the area can also be of other patterns, e.g., square, ellipse, trapezoid, etc., and can also be irregular, which is not limited in the present application.

[0071] Optionally, in the specific implementation, there can also be no concept of a circle, and the dashed circle described in Figure 2A and Figure 2B is used to exemplarily represent the positional relationship between the target 102 and the first vehicle 101, and in the implementation of the scheme, the node on the first vehicle 101 can calculate the positional relationship between the target 102 and the first vehicle 101 based on the received signal, so as to determine whether to control the first vehicle 101 to perform relevant operations.

[0072] In order to facilitate understanding of the scheme provided in the present application, several ranging technologies are introduced as follows.

[0073] 1) Received signal strength indicator (RSSI) ranging.

[0074] The signal transmitting end actively sends signals in the process of communication, and as the distance between the signal receiving end and the signal transmitting end increases, the signal strength received by the signal receiving end will continuously attenuate, and by comparing the RSSI values of the signal transmitting end and the signal receiving end, the distance between the two can be calculated. The distance d between the signal transmitting end and the signal receiving end can be described by the following formula:

[0075] D = 10 ((abs(RSSI)-a) / (10*n)) ,

[0076] wherein RSSI represents the strength of the signal received by the signal receiving end, a is the signal strength when the signal transmitting end and the signal receiving end are 1 meter apart, and n is the environmental attenuation factor.

[0077] 2) Channel sounding (CS) ranging.

[0078] CS ranging refers to using the characteristics of a channel to achieve ranging in a specific frequency band (e.g., Bluetooth frequency band). By operating on multiple radio frequency physical channels, a device makes phase measurements and round trip time (RTT) measurements, with one device acting as a starter to send signals and the other device repeating the signal transmission without modifying the phase. For each transmission at a frequency, the starter measures the phase change between the transmitted signal and the received signal, and when two or more signals at different frequencies are used, the phase difference between the signals can be used to accurately estimate the distance, while RTT measurements can further correct the distance estimation to improve the accuracy of ranging.

[0079] Exemplarily, 79 radio frequency physical channels are defined in the 2.4 GHz frequency band, and 72 of them are actually used. Distance estimation is performed by phase measurement and round trip time (RTT) measurement and is corrected to achieve more accurate distance measurement and the like.

[0080] 3) Time of flight (TOF) ranging.

[0081] TOF ranging is based on measuring the time taken by a signal to fly back and forth between two devices to determine the distance between them. Specifically, one device transmits a specific signal (e.g., an optical signal or a radio signal), which propagates at the speed of light (approximately the speed of light in a vacuum in air) to another device, and then is reflected back or directly responded by the receiving device and transmitted back to the transmitting device. By accurately measuring the time interval experienced from signal transmission to reception, since distance is equal to speed multiplied by time, the measured time is multiplied by the speed of light and divided by 2 (if it is a round trip measurement, it needs to be divided by 2 to obtain the one-way distance), and the distance between the two devices can be calculated.

[0082] 4) Time difference of arrival (TDOA) ranging.

[0083] TDOA ranging is based on the time difference of signal arrival at different receiving points to determine the position of the signal source or calculate the distance from the signal source. Assuming there are multiple base stations or receiving points, when the signal source sends a signal, the time at which the signal arrives at each receiving point is different due to the different distances between the receiving points and the signal source. By accurately measuring the time difference of signal arrival at two or more receiving points, according to the signal propagation speed (usually the speed of light, which is a fixed value in a known environment), the signal source can be determined to be located on a hyperbola with these receiving points as foci. If there are enough receiving points, the intersection of multiple hyperbolas is the position of the signal source, thereby achieving positioning, or by some algorithm, the distance from the signal source is calculated using the time difference.

[0084] As can be known from the above description, the node arranged on the first vehicle 101 is configured to receive a signal from the target 102. For the convenience of understanding, the device for receiving and processing the signal is referred to as a detection device in the following description. The detection device can be arranged on the first vehicle 101, or can be arranged on other devices, such as a gate, a barrier, a car stopper, etc. The present application does not limit the detection device.

[0085] The detection device includes a first processing unit and at least two antennas. The detection device is applied to a first vehicle, for example, the vehicle shown in the above description, which is not repeated here. The first processing unit has a signal processing function and can process the signals received by the at least two antennas and obtain corresponding information.

[0086] The first processing unit is connected with the at least two antennas respectively, which can be achieved in the following three ways.

[0087] In the first way, the first processing unit includes a radio frequency interface, and the first processing unit is connected with the at least two antennas through the radio frequency interface. Please refer to Figure 3A , Figure 3A for a structural schematic diagram of a detection device provided by the present application. As shown in Figure 3A , the detection device 310 includes a first processing unit 301, an antenna 1, an antenna 2, an antenna 3, and an antenna 4. The first processing unit 301 includes a radio frequency interface 1, and the antennas 1 to 4 are connected with the first processing unit 301 through the radio frequency interface 1. Correspondingly, the first processing unit 301 obtains the first electric signals output by the antennas 1 to 4 through the radio frequency interface 1.

[0088] Optionally, the detection device 310 can further include a power amplifier, an antenna aggregation module, and a radio frequency coaxial connector, etc. As shown in Figure 3B , the detection device 310 includes a first processing unit 301, a power amplifier, an antenna aggregation, radio frequency coaxial connectors 1 to 4, antennas 1 to 4, etc. The power amplifier is configured to amplify the electric signals output by the antennas, so as to facilitate the analysis and processing of the first processing unit 301. The antenna aggregation is configured to aggregate the electric signals output by the antennas 1 to 4 and generate the first electric signals. The radio frequency coaxial connectors 1 to 4 are configured to output the electric signals output by the antennas 1 to 4 to the antenna aggregation. The power amplifier is, for example, a front end module (FEM) power amplifier. The radio frequency coaxial connectors are, for example, fakra connectors, SMA type connectors, or N type connectors, etc.

[0089] The second mode, the first processing unit includes at least two radio frequency interfaces, the first processing unit is connected with the at least two antennas through the at least two interfaces respectively, for example, the first processing unit includes four radio frequency interfaces, the at least two antennas include four antennas, the first processing unit is connected with the four antennas through the four radio frequency interfaces respectively, that is, the four antennas are connected with the four radio frequency interfaces one by one. Figure 4 As shown in the figure, the detection device 310 includes a first processing unit 301, an antenna 1, an antenna 2, an antenna 3 and an antenna 4, wherein the first processing unit 301 includes a radio frequency interface 1, a radio frequency interface 2, a radio frequency interface 3 and a radio frequency interface 4, the antenna 1, the antenna 2, the antenna 3 and the antenna 4 are connected with the radio frequency interface 1, the radio frequency interface 2, the radio frequency interface 3 and the radio frequency interface 4 respectively, and the first processing unit 301 obtains the first electrical signal output by the antenna 1 to the antenna 4 through the radio frequency interface 1 to the radio frequency interface 4 respectively.

[0090] Optionally, the detection device 310 can also include a power amplifier, an antenna summary module and a radio frequency coaxial connector, etc. In order to reduce the content of the accumulation, as for the case that the detection device 310 includes the power amplifier, the antenna summary module and the radio frequency coaxial connector, please refer to the above Figure 3B introduction, which will not be repeated here.

[0091] The third mode, the detection device also includes a switch unit, the switch unit is used for connecting the first processing unit with the at least two antennas, and the switch unit is used for controlling the on or off of the signal transmission of one or more antennas in the at least two antennas. Please refer to Figure 5A , Figure 5A Another structure diagram of the detection device provided by the present application is shown in the figure. Figure 5A As shown in the figure, the detection device 310 includes a first processing unit 301, a switch unit 302, an antenna 1, an antenna 2, an antenna 3 and an antenna 4, wherein the first processing unit 301 includes a radio frequency interface 1, and the switch unit 302 is connected between the radio frequency interface 1 and the antenna 1, the antenna 2, the antenna 3 and the antenna 4. By controlling the switch unit 302, the on or off of the signal transmission of one or more antennas in the antenna 1 to the antenna 4 can be adjusted.

[0092] Optionally, the detection device 310 can also include a power amplifier, an antenna summary module and a radio frequency coaxial connector, etc. As Figure 5BAs shown, the detection device 310 includes a first processing unit 301, a power amplifier, a switch unit 302, a radio frequency coaxial connector 1 to a radio frequency coaxial connector 4, and an antenna 1 to an antenna 4, wherein the first processing unit 301 includes a radio frequency interface 1, a general purpose input / output (GPIO) interface 1 to a GPIO interface 3. The antenna 1 to the antenna 4 are connected to the switch unit 302 through the radio frequency coaxial connector 1 to the radio frequency coaxial connector 4, and the power amplifier is connected between the radio frequency interface 1 and the switch unit 302. The switch unit 302 is also connected to the GPIO interface 1 to the GPIO interface 3, and the first processing unit 301 can control the switch unit 302 through the GPIO interface 1 to the GPIO interface 3, and by controlling the switch unit 302, the signal transmission of one or more of the antenna 1 to the antenna 4 can be adjusted.

[0093] Optionally, the switch unit 302 is, for example, a double-pole four-throw switch.

[0094] Optionally, the first processing unit 301 described above can be a star flash chip, an NFC chip, a Bluetooth chip, or a UWB chip, etc.

[0095] Optionally, the first processing unit 301 described above can also be connected with a control area network transceiver (CAN transceiver) and an eSE chip, which are not limited in the present application.

[0096] Each of the at least two antennas is used to receive a signal and output an electrical signal, and the signal received by the at least two antennas is, for example, one or more of a Bluetooth signal, a star flash signal, an NFC signal, or a UWB signal. As can be known from the foregoing description of the "digital key", the signal sent by the terminal device includes identity information and control information of the terminal device, however, the focus of the present application is not the verification of the identity, in order to reduce the redundancy, the signal received by the antenna in the present application refers to the signal that can be verified by the detection device.

[0097] The first processing unit is used to determine the positional relationship between the target and the first vehicle based on the first electrical signal output by part or all of the at least two antennas. The first electrical signal is composed of the electrical signals output by part of the at least two antennas, or the first electrical signal is composed of the electrical signals output by all of the at least two antennas. The positional relationship between the target and the first vehicle includes the distance between the target and the first vehicle, or the orientation of the target and the first vehicle. The target is, for example, a terminal device that sends a signal, for example, a smart phone, a smart wearable device, or a car key, etc.

[0098] The at least two antennas are arranged on the body of the first vehicle. It can be understood that the at least two antennas arranged on the body of the first vehicle are used to better acquire signals, so that the first processing unit can determine the positional relationship between the target and the first vehicle in time according to the signals acquired by the antennas, and then generate a related control signal to control the first vehicle to perform a corresponding operation.

[0099] In a possible implementation, the positions of the at least two antennas distributed on the first vehicle are determined by the vehicle model of the first vehicle.

[0100] The vehicle model of the first vehicle exemplarily includes a sedan, an SUV, an MPV, a sports car, a pickup truck, or a new energy vehicle, and the like. Further, the sedan can be further classified into a micro sedan, a small sedan, a compact sedan, a medium sedan, a large sedan, and the like, the SUV can be further classified into a small SUV, a compact SUV, a medium SUV, a medium-large SUV, a large SUV, and the like, the MPV can be further classified into a compact MPV, a medium MPV, a large MPV, and the like, the sports car can be further classified into an entry-level sports car, a medium-level sports car, a super sports car, an ultimate sports car, and the like, and the pickup truck can be further classified into a small pickup truck, a medium pickup truck, a large pickup truck, and the like. In addition, the vehicles can be classified according to the length, width, and height of the vehicles. It can be understood that the positions of the at least two antennas distributed on the first vehicle are determined by the vehicle model of the first vehicle, so that the at least two antennas can be reasonably distributed according to the vehicle model of the first vehicle, and it is ensured that the at least two antennas can accurately and effectively receive signals, and then determine the positional relationship between the target and the first vehicle.

[0101] Next, several layouts of the at least two antennas arranged on the first vehicle are shown in combination with the accompanying drawings.

[0102] Layout one, the at least two antennas include two antennas, and the two antennas are arranged on the side doors of the first vehicle.

[0103] Please refer to Figure 6 , Figure 6 is a schematic diagram of the layout of the at least two antennas on the first vehicle. As Figure 6 shown, the two antennas are respectively antenna 1 and antenna 2, and the antenna 1 and the antenna 2 are arranged on the left side door and the right side door of the first vehicle respectively. It can be understood that by arranging the two antennas on the side doors of the first vehicle, it is beneficial for the at least two antennas to receive signals from both sides of the vehicle, so that when the target approaches / leaves the first vehicle from any side of the vehicle, the antennas can timely acquire the signals of the target, thereby ensuring that the first processing unit can determine the positional relationship between the target and the first vehicle based on the first electrical signals output by the antennas.

[0104] Optionally, the at least two antennas further include a first antenna arranged on the roof of the first vehicle.

[0105] Optionally, antenna 1, antenna 2 and the first antenna are all connected to the first processing unit 301.

[0106] Optionally, the two antennas can also be installed on the A-pillar, B-pillar, or C-pillar on both sides of the first vehicle.

[0107] Optionally, the two antennas can also be installed in the side windows of the first vehicle, for example, the two antennas can be installed in the left front quarter window and the right front quarter window of the first vehicle, or the two antennas can be installed in the left rear quarter window and the right rear quarter window of the first vehicle, etc.

[0108] Layout 2: The above-mentioned at least two antennas include four antennas, which are respectively installed on the windshield, left front quarter window, right front quarter window and rear windshield of the first vehicle.

[0109] Please see Figure 7 , Figure 7 A schematic diagram illustrating another arrangement of at least two antennas on a first vehicle, as provided in this application. Figure 7 As shown, the four antennas are antenna 1, antenna 2, antenna 3, and antenna 4. Antennas 1, 2, 3, and 4 are respectively mounted on the windshield, left front quarter window, right front quarter window, and rear windshield of the first vehicle. This allows the four antennas to receive signals from the front, rear, left, and right of the first vehicle, ensuring that the antennas can promptly acquire the target's signal whenever the target approaches or moves away from the vehicle from any direction. This ensures that the first processing unit can determine the positional relationship between the target and the first vehicle based on the first electrical signal. Furthermore, mounting the four antennas on the various windows of the first vehicle also facilitates the reception of signals from inside the vehicle, enabling the first processing unit to determine whether the target is located inside the first vehicle based on the first electrical signal.

[0110] Optionally, at least two antennas may also include a first antenna disposed on the roof of the first vehicle.

[0111] Optionally, antenna 1, antenna 2, antenna 3, antenna 4 and the first antenna are all connected to the first processing unit 301.

[0112] Optionally, the four antennas can also be respectively installed on the windshield, left rear quarter window, right rear quarter window and rear windshield of the first vehicle.

[0113] Optionally, the four antennas can also be respectively installed on the windshield, left front quarter window, right rear quarter window and rear windshield of the first vehicle.

[0114] Optionally, the four antennas can also be respectively installed on the windshield, left rear quarter window, right front quarter window and rear windshield of the first vehicle.

[0115] Optionally, the four antennas are also arranged on the front windshield, the left door, the right door and the rear windshield of the first vehicle respectively.

[0116] Optionally, the four antennas are also arranged on the front windshield, the left B-pillar, the right B-pillar and the rear windshield of the first vehicle respectively.

[0117] Optionally, the layout of the four antennas on the first vehicle is as much as possible to surround the first vehicle, so that the target transmitting signal can be received in time through the four antennas. For example, the four antennas are arranged uniformly around the first vehicle.

[0118] Optionally, the four antennas include an antenna arranged on the glass (for example, the front windshield, the side window glass, the rear windshield or the canopy, etc.) of the first vehicle. In this way, the four antennas can obtain the signal inside the vehicle in time, so that the first processing unit can determine whether the target is located inside the first vehicle based on the first electric signal.

[0119] Optionally, the at least two antennas further include a first antenna arranged on the roof of the first vehicle. Please refer to Figure 8 , Figure 8 Another layout of the at least two antennas on the first vehicle is provided in the present application. As shown in Figure 8 , the at least two antennas include antennas arranged on the front windshield, the left front quarter window, the right front quarter window and the rear windshield of the first vehicle respectively, and further include a first antenna arranged on the roof of the first vehicle. It can be understood that the first vehicle is mostly made of metal, which has a certain shielding effect on signals. By arranging the first antenna on the roof of the first vehicle, the first processing unit can determine whether the target is located inside the first vehicle based on the electric signal output by the first antenna.

[0120] Optionally, the at least two antennas further include a first antenna arranged on the roof of the first vehicle.

[0121] Optionally, the antenna 1, the antenna 2, the antenna 3, the antenna 4 and the first antenna are all connected with the first processing unit 301.

[0122] It can be understood that the layout of the four antennas on the first vehicle is various, which will not be listed here.

[0123] Layout three, the at least two antennas include five antennas arranged on the left side of the front bumper, the right side of the front bumper, the left side of the rear bumper, the right side of the rear bumper and the roof of the first vehicle respectively.

[0124] Please refer to Figure 9 , Figure 9 Another layout of the at least two antennas on the first vehicle is provided in the present application. As shown inFigure 9 As shown, the five antennas are respectively antenna 1, antenna 2, antenna 3, antenna 4 and antenna 5, which are respectively arranged at the left side of the front bumper, the right side of the front bumper, the left side of the rear bumper, the right side of the rear bumper and the roof of the first vehicle, so that the five antennas can respectively receive signals from the front, rear, left, right of the first vehicle and the inside of the first vehicle, so that the target approaches / leaves the first vehicle from any direction of the vehicle, and the antennas can timely obtain the signals of the target, thereby ensuring that the first processing unit can determine the positional relationship between the target and the first vehicle based on the first electric signal.

[0125] Optionally, the antenna 1, the antenna 2, the antenna 3, the antenna 4 and the antenna 5 are connected with the first processing unit 301.

[0126] Optionally, the five antennas are respectively arranged at the left side headlamp, the right side headlamp, the left side tail lamp, the right side tail lamp and the roof of the first vehicle.

[0127] Optionally, the five antennas are respectively arranged at the left side of the hood, the right side of the hood, the left side of the tailgate, the right side of the tailgate and the roof of the first vehicle.

[0128] Optionally, the at least two antennas further include a second antenna and a third antenna, the second antenna is arranged at the left side door of the first vehicle, and the third antenna is arranged at the right side door of the first vehicle.

[0129] Optionally, the layout of the five antennas on the first vehicle encloses the first vehicle as much as possible, so that the five antennas can timely receive the signals sent by the target. For example, the five antennas are uniformly arranged around the first vehicle.

[0130] The above content is combined with Figures 6 to 9 The layout of the at least two antennas on the first vehicle is exemplarily introduced, and then how to control the at least two antennas arranged on the first vehicle to receive signals is introduced.

[0131] In a possible implementation, the at least two antennas are divided into a plurality of antenna combinations, and one antenna combination includes at least one antenna. The first processing unit is configured to control the switching unit, so that the plurality of antenna combinations are connected with the first processing unit in a first order.

[0132] Please refer to Figure 10A , Figure 10A Another schematic diagram of the layout of the at least two antennas on the first vehicle is provided for the present application. As shown in the figure, Figure 10A The at least two antennas include seven antennas, namely antenna 1, antenna 2, antenna 3, antenna 4, antenna 5, antenna 6 and antenna 7, wherein the antenna 1 to the antenna 6 are uniformly arranged around the first vehicle, and the antenna 7 is arranged on the roof of the first vehicle.

[0133] Next, taking the layout shown in Figure 10A Fig. 1 as an example, the antenna combination is exemplarily introduced.

[0134] 1) Different antenna combinations include different antennas.

[0135] As shown in Figure 10B Fig. 1, the antennas 1 to 7 are divided into four antenna combinations, wherein the antennas 1 and 2 are the antenna combination 1, the antennas 3 and 6 are the antenna combination 2, the antennas 4 and 5 are the antenna combination 3, and the antenna 7 is the antenna combination 4. Of course, in the case that each antenna combination includes one antenna, it also belongs to different antenna combinations including different antennas, for example, Figure 10A the antennas 1 to 7 shown in Fig. 2 can be regarded as one antenna combination respectively. It can be understood that the range of receiving signals by the antenna has certain limitations. By forming multiple antennas into an antenna combination, the limitation of the receiving range of a single antenna can be overcome, thereby accelerating the scanning frequency of the antenna to the signal.

[0136] 2) Different antenna combinations can include the same antenna.

[0137] As shown in Figure 10C Fig. 3, the antennas 1 to 7 are divided into seven antenna combinations, wherein the antennas 1 and 2 are the antenna combination 1, the antennas 2 and 3 are the antenna combination 2, the antennas 3 and 4 are the antenna combination 3, the antennas 4 and 5 are the antenna combination 4, the antennas 5 and 6 are the antenna combination 5, the antennas 6 and 1 are the antenna combination 6, and the antenna 7 is the antenna combination 7. In this way, one antenna can be used for multiple times of receiving signals in continuous time, thereby avoiding the missed detection of signals.

[0138] 3) Different antenna combinations include the same number of antennas.

[0139] As shown in Figure 10D Fig. 4, the antennas 1 to 7 are divided into four antenna combinations, wherein the antennas 1 and 2 are the antenna combination 1, the antennas 3 and 6 are the antenna combination 2, the antennas 4 and 5 are the antenna combination 3, and the antennas 6 and 7 are the antenna combination 4. It can be seen that each antenna combination includes two antennas. Of course, in the case that each antenna combination includes one antenna, it also belongs to different antenna combinations including the same number of antennas, for example, Figure 10A the antennas 1 to 7 shown in Fig. 5 can be regarded as one antenna combination respectively. In this way, the first electric signals output by the antenna combinations are all composed of the electric signals output by the same antenna, which is convenient for the first processing unit to process the first electric signals.

[0140] 4) Different antenna combinations can include different numbers of antennas.

[0141] As described aboveFigure 10B As shown in FIG. 1, antenna combination 1, antenna combination 2 and antenna combination 3 each include 2 antennas, and antenna combination 4 includes only 1 antenna.

[0142] 5) Different antenna combinations are used to determine different position relationships.

[0143] Please continue to refer to the above Figure 10B , Figure 10B In the case that the target is outside the first vehicle, the electrical signals output by antenna combination 1, antenna combination 2 and antenna combination 3 can be used to determine the position relationship between the target and the first vehicle. Figure 10B In the case that the target is inside the first vehicle, antenna combination 4 can be used to determine whether the target is inside the first vehicle. In this way, the first electrical signals output by different antenna combinations can be used for different forms of detection, thereby improving the accuracy of detection.

[0144] Optionally, when the ranging technology used by the first processing unit 301 is RSSI ranging, multiple antennas can be included in one antenna combination. When the ranging technology used by the first processing unit 301 is CS ranging, TOF ranging or TDOA ranging, one antenna is included in one antenna combination.

[0145] It can be understood that the above Figures 10B to 10D is exemplary and should not be considered as a limitation of the present application. In actual implementation, more antenna combinations can be divided, and the present application does not limit this.

[0146] Next, in combination with the antenna combinations shown in Figures 10B to 10D , the "first order" will be introduced exemplarily taking the layout shown in Figure 10A as an example.

[0147] 1) Each antenna unit is connected to the first processing unit 301 in turn.

[0148] Taking Figure 10B as an example, antenna combination 1, antenna combination 2, antenna combination 3 and antenna combination 4 are connected to the first processing unit 301 in turn. Exemplarily, the first processing unit 301 can send control information to the switch unit 302 through the GPIO interface, so that the antennas included in antenna combination 1, antenna combination 2, antenna combination 3 and antenna combination 4 are connected to the first processing unit 301 in turn. In this case, each antenna is connected to the first processing unit 301 at the same frequency. Further, when the antenna combinations are connected to the first processing unit 301 through the switch unit 302, the first processing unit 301 can determine the position relationship between the target and the first vehicle through the first electrical signals output by the antenna combinations.

[0149] As Figure 11AAs shown, the first processing unit 301 is connected in sequence to antenna assembly 1, antenna assembly 2, antenna assembly 3 and antenna assembly 4.

[0150] Optionally, when the first processing unit 301 determines, based on the first electrical signal output by the target antenna assembly, that the positional relationship between the target and the first vehicle meets preset conditions, the first processing unit 301 can control the switching unit 302 to connect the target antenna assembly to the first processing unit 301 and acquire the first electrical signal output by the target antenna assembly to re-determine whether the positional relationship between the target and the first vehicle meets the preset conditions. The preset conditions may include, for example, the distance between the target and the first vehicle being less than or equal to a first distance, the distance between the target and the first vehicle being greater than the first distance, or the target being located inside the first vehicle.

[0151] like Figure 11B As shown, the first processing unit 301 is sequentially connected to antenna assembly 1, antenna assembly 2, antenna assembly 3, and antenna assembly 4. Based on the first electrical signal output by antenna assembly 4, the first processing unit 301 determines that the first distance between the target and the vehicle is greater than the first distance. The first processing unit 301 then controls the switching unit 302 to reconnect antenna assembly 4 to the first processing unit 301 and acquire the first electrical signal output by antenna assembly 4.

[0152] 2) Different antenna combinations require different connection frequencies.

[0153] The above Figure 11A In the first sequence shown, different antenna combinations are connected to the first processing unit 301 at the same frequency. However, different antenna combinations may be used to determine different positional relationships, such as... Figure 10B The electrical signals output by antenna assembly 1, antenna assembly 2 and antenna assembly 3 shown can be used to determine the positional relationship between the target and the first vehicle when the target is outside the first vehicle. Figure 10B The antenna combination 4 can be used to determine whether a target is inside the first vehicle. Therefore, different antenna combinations can be configured with different connection frequencies. Figure 10B Taking the antenna combinations shown as an example, the connection frequencies between antenna combinations 1 to 3 and the first processing unit 301 are greater than the connection frequency between antenna combination 4 and the first processing unit 301. For example, the connection frequency between antenna combinations 1 to 3 and the first processing unit 301 is 10Hz, and the connection frequency between antenna combination 4 and the first processing unit 301 is 5Hz, etc. Figure 11C As shown, the first processing unit 301 connects with antenna assembly 1 to antenna assembly 3 twice, and then connects with antenna assembly 4 once. This connection scheme helps the first processing unit 301 to obtain the positional relationship between the target and the first vehicle when the target is outside the first vehicle in a timely manner.

[0154] Optionally, the connection frequency between the antenna assembly and the first processing unit 301 can be 5Hz, 10Hz, or 20Hz, etc., and this application does not limit this.

[0155] Optionally, when the first processing unit 301 is a star flash chip, the connection frequency between the antenna assembly and the first processing unit 301 can be 5Hz, and this application does not limit this.

[0156] Optionally, when the first processing unit 301 is a Bluetooth chip, NFC chip, or UWB chip, the connection frequency between the antenna combination and the first processing unit 301 can be 20Hz, and this application does not limit this.

[0157] The detection device 310 described above includes a first processing unit 301 and at least two antennas. In another possible implementation, the detection device 310 further includes at least one second processing unit and an antenna connected to the second processing unit. The antenna connected to the second processing unit is used to receive signals and output a second electrical signal. The second processing unit is used to determine a first distance between the antenna connected to the second processing unit and the target based on the second electrical signal.

[0158] Please see Figure 12 , Figure 12 A schematic diagram of another detection device provided in this application. Figure 12 As shown, the detection device 310 includes a first processing unit 301, a second processing unit 401, a second processing unit 402, and antennas 1 to 4. The first processing unit 301 includes a radio frequency (RF) interface 1 and is connected to antennas 1 to 4 via the RF interface 1. The second processing unit 401 includes an RF interface 5 and is connected to antenna 5 via the RF interface 5. The second processing unit 402 includes an RF interface 6 and is connected to antenna 6 via the RF interface 6. Furthermore, the first processing unit 301 is also connected to the second processing unit 401 and the second processing unit 402. The second processing unit 401 can determine a first distance between antenna 5 and the target based on a second electrical signal output from antenna 5, while the second processing unit 402 can determine a first distance between antenna 6 and the target based on a second electrical signal output from antenna 6. It should be noted that... Figure 12 There are two second processing units in the detection device 310. In specific implementation, the detection device 310 may include more or fewer second processing units. This application does not limit this. For example, the detection device 310 may include one, two, three or four second processing units.

[0159] In one possible implementation, the first processing unit is further configured to determine the positional relationship between the target and the first vehicle based on a first distance determined by at least one second processing unit, and / or the first electrical signal.

[0160] As mentioned aboveFigure 12 As shown, the first processing unit 301 is connected with the second processing unit 401 and the second processing unit 402 respectively. The first processing unit 301 can be connected with the second processing unit in an indirect way, for example, the second processing unit sends the generated first distance to the CAN bus of the vehicle, and the first processing unit 301 obtains the first distance by reading the data on the CAN bus. The first processing unit 301 can also be connected with the second processing unit in a direct way, for example, the first processing unit 301 and the second processing unit 401 and the second processing unit 402 transmit data in a wired way. Specifically, the first distance generated by the second processing unit can be transmitted to the first processing unit 301 in a wired way. In summary, the first processing unit 301 can obtain the first distance output by the second processing unit.

[0161] Next, several ways in which the first processing unit 301 determines the positional relationship between the target and the first vehicle are shown.

[0162] Method one, the first processing unit 301 determines the positional relationship of the first vehicle based on the first distance.

[0163] It can be understood that the installation position of the antenna (for example, antenna 5, antenna 6) on the first vehicle is fixed, so that the positional relationship between the target and the first vehicle can be determined when the distance between the antenna and the target is determined. Further, the positional relationship between the target and the first vehicle can be determined based on the first distance corresponding to multiple antennas. For example, the positional relationship between the target and the first vehicle can be determined based on the first distance corresponding to the antenna 5 and the antenna 6.

[0164] Method two, the first processing unit 301 determines the positional relationship between the target and the first vehicle based on the first electric signal.

[0165] Similar to the above method one, the first electric signal is the electric signal output by the antenna connected with the first processing unit 301, and the first processing unit 301 can also determine the distance between the antenna and the target based on the first electric signal, and further determine the positional relationship between the target and the first vehicle according to the distance between multiple antennas and the target. For example, the first processing unit 301 can determine the positional relationship between the target and the first vehicle based on the first electric signal corresponding to the antenna 1 and the first electric signal corresponding to the antenna 2.

[0166] Method three, the first processing unit 301 determines the positional relationship between the target and the first vehicle based on the first distance and the first electric signal. Similar to the above method one and method two, the specific implementation is not described here.

[0167] In order to better understand the case where the detection device 310 includes at least one second processing unit, the layout of the first processing unit 301 and the second processing unit on the first vehicle in this case is shown by the accompanying drawings.

[0168] Please refer to Figure 13A , Figure 13A A schematic diagram of the layout of a detection device provided by the present application on a first vehicle. Figure 13A The introduction of the first antenna 1 and the second antenna 2 can refer to the foregoing Figure 6 introduction, which will not be repeated here. Figure 13A The position of the first processing unit 301 on the first vehicle is exemplary. The present application does not limit the position of the first processing unit 301 on the first vehicle. The first vehicle is also provided with nodes 1 to 4 at the four corners, for example, the node 1 is provided at the left side of the front bumper of the first vehicle, the node 2 is provided at the right side of the front bumper of the first vehicle, the node 3 is provided at the right side of the rear bumper of the first vehicle, and the node 4 is provided at the left side of the rear bumper of the first vehicle. Among them, the nodes 1 to 4 all include a second processing unit 401 and an antenna connected with the second processing unit 401, as shown in Figure 13B .

[0169] Optionally, the first processing unit 301 is also connected with a first antenna, and the first antenna is an antenna provided on the awning of the first vehicle.

[0170] Regarding the Figure 13A hardware structure of the connection between the first processing unit 301 and the first antenna, the second antenna, and the first antenna, please refer to the foregoing Figure 3A , Figure 3B , Figure 4 , Figure 5A or Figure 5B introduction, which will not be repeated here.

[0171] Next, taking the layout shown in Figure 13A as an example, the order of receiving signals by the nodes or the antennas will be introduced exemplarily. Figure 13A

[0172] 1) Receive signals through the nodes or the antennas shown in Figure 13A in turn.

[0173] Please refer to Figure 14 , Figure 14 a polling period, in which the nodes 1 to 4, the first antenna, the second antenna, and the first antenna receive signals in turn. Correspondingly, after the nodes 1 to 4 receive signals, the first distance will be generated by processing the signals and transmitted to the first processing unit 301, and after the first antenna, the second antenna, and the first antenna receive signals, the first electrical signal will be output to the first processing unit 301. Regarding how the first processing unit 301 determines the positional relationship between the target and the first vehicle based on the first distance and / or the first electrical signal, please refer to the foregoing introduction, which will not be repeated here.

[0174] ​2) In a polling cycle, the first processing unit 301 only controls the antenna 1, the antenna 2 and part of the antennas in the first antenna to receive signals.

[0175] Please refer to Figure 15 In a polling cycle, the node 1 to the node 4 receive signals in turn, and the first processing unit 301 only controls one antenna to receive signals. It can be understood that, Figure 15 The frequency of the node 1 to the node 4 receiving signals is greater than the frequency of the antenna 1, the antenna 2 and the first antenna receiving signals. For example, if the frequency of the node 1 to the node 4 receiving signals is 20Hz, then the frequency of the antenna 1, the antenna 2 and the first antenna receiving signals is 20 / 3Hz (about 6.67Hz). For another example, if the frequency of the node 1 to the node 4 receiving signals is 5Hz, then the frequency of the antenna 1, the antenna 2 and the first antenna receiving signals is 5 / 3Hz (about 1.67Hz).

[0176] Alternatively, when the first processing unit 301 and the second processing unit are both star flash chips, the frequency of the node 1 to the node 4 receiving signals can be 5Hz, and the frequency of the antenna 1, the antenna 2 and the first antenna receiving signals can be 5 / 3Hz (about 1.67Hz), which is not limited by the present application.

[0177] Alternatively, when the first processing unit 301 and the second processing unit are both Bluetooth chips, NFC chips or UWB chips, the frequency of the node 1 to the node 4 receiving signals can be 20Hz, and the frequency of the antenna 1, the antenna 2 and the first antenna receiving signals can be 20 / 3Hz (about 6.67Hz), which is not limited by the present application.

[0178] 3) The node 1 to the node 4 receive signals in a specified order and a first frequency order, and the antenna 1, the antenna 2 and the first antenna receive signals in a specified order and a second frequency order.

[0179] Please refer to Figure 16 , the node 1 to the node 4 receive signals in turn in the order of the node 1, the node 2, the node 3 and the node 4, and the antenna 1, the antenna 2 and the first antenna receive signals in turn in the order of the antenna 1, the antenna 2 and the first antenna, and the two cycles do not interfere with each other. The first frequency and the second frequency can be the same or different. For example, the first frequency and the second frequency are both 10Hz, for another example, the first frequency is 10Hz and the second frequency is 5Hz, and the like, which is not limited by the present application. Wherein, the first frequency refers to the frequency of any one of the node 1 to the node 4 receiving signals, and the second frequency refers to the frequency of the antenna 1, the antenna 2 or the first antenna receiving signals.

[0180] The above content shows the sequence of receiving signals, and it can be seen that the scheme provided by the application has high flexibility for the sequence of receiving signals, so that the detection device provided by the application can flexibly set the sequence of receiving signals based on specific conditions, thereby improving the reliability of the detection device in receiving signals.

[0181] In a possible implementation, the first processing unit 301 controls the first vehicle to perform a first operation when it is determined that the signal strength of the first electric signal is greater than a first threshold.

[0182] It can be known from the aforementioned RSSI ranging that the distance between the target and the first vehicle is positively correlated with the RSSI value of the signal, and therefore, when the signal strength of the first electric signal is greater than the first threshold, it can be determined that the distance between the target and the first vehicle is less than or equal to the first distance, so that the first vehicle can be controlled to perform the first operation. The first operation includes operations such as unlocking, turning on a welcome light, starting the vehicle, or opening a door. It should be noted that the setting of the first threshold is not limited by the application, and the setting of the first threshold can be related to the antenna model, the length of the signal line between the antenna and the first processing unit, the initial strength of the signal emitted by the target, and the like.

[0183] Optionally, the first processing unit 301 controls the first vehicle to perform a second operation when it is determined that the signal strength of the first electric signal is less than or equal to the first threshold.

[0184] Similarly, when the signal strength of the first electric signal is less than or equal to the first threshold, it can be determined that the distance between the target and the first vehicle is greater than the first distance, so that the first vehicle can be controlled to perform the second operation. The first operation includes operations such as locking, turning off, or closing the door.

[0185] In summary, the first processing unit 301 is connected with at least two antennas respectively in the application, the at least two antennas are arranged on the vehicle body of the first vehicle, so that the first processor can obtain signals from part of the antennas or all of the antennas, and determine the positional relationship between the target and the first vehicle based on the first electric signal output by part of the antennas or all of the antennas. The at least two antennas in the detection device 310 can be arranged at different positions of the first vehicle to receive signals from different directions of the first vehicle, ensuring that the detection device can obtain signals from different directions of the first vehicle in time and avoiding signal missing detection. The detection device 310 does not arrange multiple processing units to process the signals received by the at least two antennas, but processes the signals received by part of the antennas or all of the antennas through the first processing unit 301. On the one hand, since the antenna structure is simple and not easy to be damaged, the reliability of the detection device can be improved, and on the other hand, a large number of processing units can be saved, and the cost of the detection device can be reduced as much as possible. In addition, since the antenna has a small volume, it is convenient to select the installation position of the antenna on the first vehicle, thereby facilitating the installation of the detection device on the first vehicle. In summary, the detection device 310 provided by the application has the characteristics of high reliability, low cost, small volume and easy installation.

[0186] The division of units in the embodiments of the application is illustrative, and is only a logical functional division. In actual implementation, another division mode can be used. In addition, each functional unit in each embodiment of the application can be integrated in one processor, or can be physically separated, or two or more units can be integrated in one unit. The integrated unit can be realized in the form of hardware or in the form of a software functional unit.

[0187] It can be understood that the functions of the communication unit in the above embodiments can be realized by a transceiver, and the functions of the processing unit can be realized by a processor. The transceiver can include a transmitter and / or a receiver, etc., which are used to realize the functions of the sending unit and / or the receiving unit. The functions of the transceiver and the processor will be described in detail below. Figure 17 The above is described by way of example.

[0188] Figure 17 is a schematic block diagram of a detection device provided by an embodiment of the application, Figure 17 The detection device 1700 shown in the figure can be Figure 3A , Figure 3B , Figure 4 , Figure 5A or Figure 5B The device shown in the figure is an implementation mode of a hardware circuit of the detection device. For the convenience of description, Figure 17 only the main components of the detection device are shown.

[0189] Figure 17The detection device 1700 shown includes at least one processor 1701. The detection device 1700 may also include at least one memory 1702 for storing program instructions and / or data. The memory 1702 and the processor 1701 are coupled. The coupling in this embodiment is an indirect coupling or communication connection between devices, units, or modules, and can be electrical, mechanical, or other forms, used for information exchange between devices, units, or modules. The processor 1701 can operate collaboratively with the memory 1702, and the processor 1701 can execute program instructions stored in the memory 1702. At least one of the at least one memory 1702 may be included in the processor 1701.

[0190] The detection device 1700 may further include a communication interface 1703 for communicating with other devices via a transmission medium, thereby enabling the detection device 1700 to communicate with other devices. In this embodiment, the communication interface may be a transceiver, circuit, bus, module, or other type of communication interface. In this embodiment, when the communication interface is a transceiver, the transceiver may include an independent receiver, an independent transmitter, or a transceiver with integrated transceiver functions, or an interface circuit.

[0191] It should be understood that the connection medium between the processor 1701, memory 1702, and communication interface 1703 described above is not limited in the embodiments of this application. The embodiments of this application in... Figure 17 The memory 1702, processor 1701, and communication interface 1703 are connected via a communication bus 1704. Figure 17 The connections between other components are shown in bold and are for illustrative purposes only, not as limiting information. The bus may include an address bus, data bus, control bus, etc. For ease of illustration, Figure 17 The symbol is represented by a single thick line, but this does not indicate that there is only one bus or one type of bus. The operations performed by the processor 1701 can be referred to the operations performed by the first processing unit 301 mentioned above, and will not be repeated here. The operations performed by the communication interface 1703 can be referred to the operations performed by at least two antennas mentioned above, and will not be repeated here.

[0192] In this embodiment, the processor can be a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. A general-purpose processor can be a microprocessor or any conventional processor.

[0193] In the embodiments of the present application, the memory can be a non-volatile memory, such as a hard disk drive (HDD) or a solid-state drive (SSD), and can also be a volatile memory, such as a random-access memory (RAM). The memory can be any other medium capable of carrying or storing desired program codes in the form of instructions or data structures and capable of being accessed by a computer, but is not limited to this. The memory in the embodiments of the present application can also be a circuit or any other device capable of realizing a storage function, used for storing program instructions and / or data.

[0194] The embodiments of the present application further provide another detection device, which comprises a processor and a memory, wherein the memory is configured to store a computer program, and the processor is configured to execute the computer program.

[0195] The embodiments of the present application further provide a vehicle comprising the detection device 310 or the detection device 1700. Optionally, the related description of the vehicle can refer to the description of the vehicle as mentioned above, and will not be repeated here.

[0196] The embodiments of the present application further provide a terminal device comprising the detection device 310 or the detection device 1700. Optionally, the related description of the terminal device can refer to the description of the terminal device as mentioned above, and will not be repeated here.

[0197] The embodiments of the present application further provide a detection system comprising the detection device 310. Optionally, the detection system comprises a target.

[0198] Those skilled in the art can understand that all or part of the steps of the above-mentioned embodiments can be completed by hardware, or by program instructing relevant hardware to complete, and the program can be stored in a computer readable storage medium, and the storage medium mentioned above can be a read-only memory, a magnetic disk or an optical disk.

Claims

1. A detection device, characterized in that, The detection device, applied to a first vehicle, includes: a first processing unit and at least two antennas; The at least two antennas are disposed on the body of the first vehicle, and the first processing unit is connected to the at least two antennas respectively; Each of the at least two antennas is used to receive signals and output electrical signals; The first processing unit is used to determine the positional relationship between the target and the first vehicle based on the first electrical signal output by some or all of the at least two antennas; The detection device further includes a switching unit, which is used to connect the first processing unit to the at least two antennas and to control the signal transmission of one or more of the at least two antennas to be turned on or off.

2. The detection device according to claim 1, characterized in that, The positions of the at least two antennas on the first vehicle are determined by the model of the first vehicle.

3. The detection device according to claim 1 or 2, characterized in that, The at least two antennas include two antennas disposed on the side door of the first vehicle.

4. The detection device according to claim 1 or 2, characterized in that, The at least two antennas include four antennas, which are respectively disposed on the windshield, left front triangular window, right front triangular window and rear windshield of the first vehicle.

5. The detection device according to claim 4, characterized in that, The at least two antennas also include a first antenna disposed on the roof of the first vehicle.

6. The detection device according to claim 1 or 2, characterized in that, The at least two antennas include five antennas, which are respectively located on the left side of the front bumper, the right side of the front bumper, the left side of the rear bumper, the right side of the rear bumper, and the roof of the first vehicle.

7. The detection device according to claim 1, characterized in that, The at least two antennas are divided into multiple antenna combinations, each antenna combination including at least one antenna; the first processing unit is further configured to control the switching unit such that the multiple antenna combinations are connected to the first processing unit in a first order.

8. The detection device according to claim 1 or 2, characterized in that, The detection device further includes at least one second processing unit and an antenna connected to the second processing unit; the antenna connected to the second processing unit is used to receive signals and output a second electrical signal, and the second processing unit is used to determine a first distance between the antenna connected to the second processing unit and the target based on the second electrical signal; The first processing unit is further configured to determine the positional relationship between the target and the first vehicle based on the first distance determined by the at least one second processing unit and / or the first electrical signal; The first processing unit is specifically used to control the first vehicle to perform a first operation based on the positional relationship between the target and the first vehicle.

9. The detection device according to claim 1 or 2, characterized in that, When the first processing unit determines that the signal strength of the first electrical signal is greater than a first threshold, it controls the first vehicle to perform a first operation.

10. A terminal device, characterized in that, The terminal device includes the detection device according to any one of claims 1-9.

11. A vehicle, characterized in that, The vehicle includes the detection device according to any one of claims 1 to 9, or the terminal device according to claim 10.

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