System and method for detecting articles in vehicle based on UWB

Abstract

The invention relates to a system and a method for detecting articles in a vehicle based on UWB. The system for detecting the articles in the vehicle based on the UWB comprises the articles which are provided with UWB communication modules; the vehicle-mounted UWB communication device is provided with a UWB processing module and a plurality of vehicle-mounted UWB communication modules, the UWB processing module is in communication connection with the plurality of vehicle-mounted UWB communication modules, and the plurality of vehicle-mounted UWB communication modules are configured to perform UWB communication with the articles and send received UWB communication signals of the articles to the UWB processing module; the UWB processing module determines position information of the article based on the UWB communication signal and converts the determined position information of the article into a vehicle-mounted communication signal; the vehicle-mounted control device is configured to generate a corresponding control signal based on the vehicle-mounted communication signal of the vehicle-mounted UWB communication device; and the vehicle-mounted display device is configured to display the three-dimensional image of the vehicle and the position icon and / or voice prompt information of the article in the vehicle based on the control signal of the vehicle-mounted control device.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle detection and control, and more particularly to a system and method for detecting in-vehicle objects such as car keys or mobile devices based on ultra-wideband (UWB). Background Art

[0002] With the continuous advancement of technology, people's demand for smarter and more comfortable vehicles is increasing. While using a vehicle, drivers frequently use car keys and mobile devices (such as mobile phones and tablets). If a driver forgets where their car keys (or phone) are, or accidentally drops them under a seat or in a small corner and doesn't know where they are, finding them can be a real hassle. If the car is cluttered or children are playing with them, they can become hidden and difficult to find.

[0003] In addition, when the driver wants to access the mobile phone of someone else in the car via Bluetooth (for example, mobile address book or Bluetooth music, etc.), he needs to use the settings function to turn on the Bluetooth function and find the corresponding Bluetooth name in the list, and then make a Bluetooth connection. In other words, there is currently no function to connect to other people's phones via one-click Bluetooth.

[0004] However, existing car key and mobile device management systems based on Bluetooth Low Energy (BLE) technology still have shortcomings. For example, the systems can only achieve low positioning accuracy for car keys and mobile devices, which makes them inefficient for managing them. Therefore, it is necessary to address these shortcomings of existing technologies and provide a more efficient and accurate UWB-based system and method for detecting objects in a vehicle.

[0005] The above description of the background technology is only intended to facilitate an in-depth understanding of the technical solution of the present invention (such as the technical means used, the technical problems solved, and the technical effects produced), and should not be regarded as an admission or any form of implication that the information constitutes prior art already known to those skilled in the art. Summary of the Invention

[0006] An object of the present invention is to provide a system and method for accurately detecting the position of an object such as a car key or a mobile device.

[0007] According to an embodiment of the present invention, a system for detecting objects in a vehicle based on ultra-wideband (UWB) is provided, which includes: an object, which is provided with a UWB communication module and is capable of sending and receiving UWB communication signals; an on-vehicle UWB communication device, which is provided with a UWB processing module and a plurality of on-vehicle UWB communication modules, wherein the UWB processing module and the plurality of on-vehicle UWB communication modules are communicatively connected, and the plurality of on-vehicle UWB communication modules are configured to perform UWB communication with the object and send the received UWB communication signals of the object to the UWB processing module, and the UWB processing module The module determines the location information of the object based on the UWB communication signal received from the object, and converts the determined location information of the object into an on-board communication signal; an on-board control device, which is communicatively connected to the on-board UWB communication device, wherein the on-board control device is configured to generate a corresponding control signal based on the on-board communication signal of the on-board UWB communication device; and an on-board display device, which is communicatively connected to the on-board control device, wherein the on-board display device is configured to display a three-dimensional image of the vehicle, and an icon of the location of the object in the vehicle and / or voice prompt information based on the control signal of the on-board control device.

[0008] Preferably, the object is a car key or a mobile device.

[0009] The system for detecting objects in a vehicle based on UWB further includes a search button, which is arranged on the vehicle steering wheel and is electrically connected to the vehicle-mounted display device, and the search button is configured to generate a search request signal for searching for an object when the search button is pressed and send the generated search request signal to the vehicle-mounted display device; the vehicle-mounted display device is further configured to: send the received search request signal to the vehicle-mounted control device when the search request signal from the search button is received, and provide voice prompt information when the search result signal received from the vehicle-mounted control device is a signal indicating that the object does not exist in the vehicle, and provide voice prompt information when the search result signal received from the vehicle-mounted control device is a signal indicating that the object does not exist in the vehicle. When the signal is a signal indicating that there is an item in the vehicle, the location icon and / or voice prompt information of the item in the vehicle are displayed; the on-board control device is further configured to: when receiving a search request signal from the on-board display device, send the search instruction to the on-board UWB communication device, and when receiving a search result signal from the on-board UWB communication device, send the received search result signal to the on-board display device; the on-board UWB communication device is further configured to: when receiving a search instruction from the on-board control device, perform UWB communication with the item, determine whether there is an item in the vehicle and the location information of the item, and send the search result signal to the on-board control device.

[0010] The UWB-based system for detecting objects in a vehicle further includes a door lock button, which is arranged on an outer door handle and electrically connected to an on-board control device. The door lock button is configured to detect whether the door lock button is touched, and when it is detected that the door lock button is touched, a touch signal is generated and the generated touch signal is sent to the on-board control device; the on-board control device is further configured to: determine whether a touch signal from the door lock button is received, and when it is determined that a touch signal from the door lock button is received, if an object is located in the vehicle, an alarm is sounded by a buzzer, and the location of the object in the vehicle is displayed on the on-board display device.

[0011] Preferably, the vehicle-mounted control device is further configured to: detect whether the vehicle is turned off before determining whether a touch signal from a door lock button is received; when it is determined that the vehicle is turned off, determine whether at least one door is opened and closed; when it is determined that at least one door is opened and closed, determine whether all doors are closed.

[0012] Preferably, the vehicle-mounted control device is further configured to determine whether a touch signal from a door lock button is received when it is determined that the vehicle is not turned off, or that at least one door is not opened and closed, or that any door is not closed.

[0013] Preferably, the vehicle-mounted control device is further configured to: when it is determined that a touch signal from the door lock button is received, send a search instruction to the vehicle-mounted UWB communication device, and when a search result signal from the vehicle-mounted UWB communication device is received, send the received search result signal to the vehicle-mounted display device; the vehicle-mounted UWB communication device is further configured to: when receiving a search instruction from the vehicle-mounted control device, perform UWB communication with the items in the vehicle, determine whether there are items in the vehicle and the location information of the items, and send the search result signal to the vehicle-mounted control device; the vehicle-mounted display device is further configured to: when the search result signal received from the vehicle-mounted control device is a signal indicating that there are no items in the vehicle, provide voice prompt information, and when the search result signal received from the vehicle-mounted control device is a signal indicating that there are items in the vehicle, display the location icon of the item in the vehicle and / or voice prompt information.

[0014] Preferably, the mobile device further includes a Bluetooth communication module and is capable of sending and receiving Bluetooth communication signals; the vehicle-mounted display device further includes a vehicle-mounted Bluetooth communication module and a touch panel, the vehicle-mounted Bluetooth communication module is capable of performing Bluetooth communication with the mobile device, and the vehicle-mounted display device is further configured to, in the three-dimensional image of the vehicle displayed on the touch panel, when the location icon of the mobile device is touched, enable the vehicle-mounted display device to perform Bluetooth communication with the touched mobile device.

[0015] Preferably, in the three-dimensional image of the vehicle displayed on the touch panel, the display posture of the vehicle and the display angle of the object are adjusted by touching the touch panel.

[0016] Preferably, the number of the multiple vehicle-mounted UWB communication modules is five, which are respectively arranged at the left front corner, right front corner, left rear corner, right rear corner and a position near the ceiling of the front of the vehicle; the vehicle-mounted communication signal includes a wired communication signal.

[0017] According to an embodiment of the present invention, a method for detecting objects in a vehicle based on UWB is provided, which includes: sending and receiving UWB communication signals by objects in the vehicle; determining position information of the objects in the vehicle based on the received UWB communication signals by an on-board UWB communication device, and converting the determined position information of the objects into on-board communication signals; generating corresponding control signals by an on-board control device based on the on-board communication signals of the on-board UWB communication device; and displaying a three-dimensional image of the vehicle, as well as an icon indicating the position of the objects in the vehicle and / or voice prompt information by an on-board display device based on the control signals of the on-board control device.

[0018] Preferably, the object is a car key or a mobile device.

[0019] The method for detecting items in a vehicle based on UWB further includes: when a search button is pressed, generating a search request signal for searching for items in the vehicle and sending the generated search request signal to the vehicle-mounted display device; when the search request signal from the search button is received, the vehicle-mounted display device sends the received search request signal to the vehicle-mounted control device, and when the search result signal received from the vehicle-mounted control device is a signal indicating that there is no item in the vehicle, the vehicle-mounted display device provides voice prompt information, and when the search result signal received from the vehicle-mounted control device is a signal indicating that there is an item in the vehicle, the location icon and / or voice prompt information of the item in the vehicle is displayed; when the search request signal from the vehicle-mounted display device is received, the vehicle-mounted control device sends a search instruction to the vehicle-mounted UWB communication device, and when the search result signal from the vehicle-mounted UWB communication device is received, the vehicle-mounted control device sends the received search result signal to the vehicle-mounted display device; when the search instruction from the vehicle-mounted control device is received, the vehicle-mounted UWB communication device determines whether there is an item in the vehicle and the location information of the item, and sends the search result signal to the vehicle-mounted control device.

[0020] The UWB-based method for detecting items in a vehicle further includes: detecting whether a door lock button is touched; when it is detected that the door lock button is touched, generating a touch signal by the door lock button and sending the generated touch signal to an on-board control device; determining by the on-board control device whether a touch signal from the door lock button is received; when it is determined that a touch signal from the door lock button is received, if the item is in the vehicle, causing a buzzer to sound an alarm and causing the location of the item in the vehicle to be displayed on an on-board display device.

[0021] Preferably, before determining whether a touch signal from a door lock button is received, it is detected whether the vehicle is turned off; when it is determined that the vehicle is turned off, it is determined whether at least one door is opened and closed; when it is determined that at least one door is opened and closed, it is determined whether all doors are closed.

[0022] Preferably, when it is determined that the vehicle is not turned off, or it is determined that at least one door is not opened and closed, or it is determined that any door is not closed, it is not determined whether a touch signal from the door lock button is received.

[0023] Preferably, when it is determined that a touch signal is received from the door lock button, the on-board control device sends a search instruction to the on-board UWB communication device, and when a search result signal is received from the on-board UWB communication device, the on-board control device sends the received search result signal to the on-board display device; when a search instruction is received from the on-board control device, the on-board UWB communication device determines whether there is an item in the vehicle and the location information of the item, and sends the search result signal to the on-board control device; when the search result signal received from the on-board control device is a signal indicating that there is no item in the vehicle, the on-board display device provides voice prompt information, and when the search result signal received from the on-board control device is a signal indicating that there is an item in the vehicle, the on-board display device displays the location icon of the item in the vehicle and / or voice prompt information.

[0024] Preferably, when a location icon of a mobile device is touched in the three-dimensional image of the vehicle displayed on the touch panel of the in-vehicle display device, the in-vehicle display device is enabled to perform Bluetooth communication with the touched mobile device.

[0025] Preferably, in the three-dimensional image of the vehicle displayed on the touch panel of the in-vehicle display device, the display posture of the vehicle and the display angle of the object are adjusted by touching the touch panel.

[0026] Preferably, the vehicle-mounted UWB communication device is provided with multiple vehicle-mounted UWB communication modules, and the number of the multiple vehicle-mounted UWB communication modules is five, which are respectively arranged at the left front corner, right front corner, left rear corner, right rear corner and a position near the ceiling of the front of the vehicle; the vehicle-mounted communication signal includes a wired communication signal.

[0027] The present invention adopts the above technical solution, which has the following beneficial effects:

[0028] According to an embodiment of the present invention, the system and method for detecting items such as car keys or mobile devices based on UWB can accurately detect the location of the car keys or mobile devices through a body domain control device and a UWB communication module set in the vehicle, and the audio video navigation communication (AVNT) device can display a three-dimensional image of the vehicle and the location icon and / or voice prompt information of the car keys and / or mobile devices in the vehicle, so that the driver and passengers can quickly and clearly obtain the location and / or voice information of the car keys and / or mobile devices in the vehicle.

[0029] The UWB-based system and method for detecting objects such as car keys or mobile devices according to an embodiment of the present invention also features a one-touch connection function. When the location icon of a mobile device is touched within the three-dimensional image of the vehicle displayed on the vehicle display, the vehicle display directly establishes Bluetooth communication with the mobile device whose location icon was touched, thereby simplifying the Bluetooth connection process. This single-touch function replaces the existing complex steps of using the settings function to enable Bluetooth, finding the corresponding Bluetooth name in the list, and then connecting to Bluetooth.

[0030] According to the UWB-based system and method for detecting items such as car keys or mobile devices, when a vehicle is turned off and the car key and / or mobile device is left inside, pressing the door lock button on the exterior door handle will not only sound an alarm, but the vehicle's display will also display an image and / or voice prompt of the key and / or mobile device's location inside the vehicle. This helps drivers quickly locate lost or forgotten car keys and / or mobile devices, improving user convenience and safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The following will describe exemplary embodiments of the present invention in more detail with reference to the accompanying drawings. For clarity, identical components in different drawings are represented by identical reference numerals. It should be noted that the drawings are for illustrative purposes only and are not necessarily drawn to scale. In these drawings:

[0032] Figure 1FIG. 4 is a block diagram illustrating a system for detecting items such as car keys or mobile devices based on UWB according to an embodiment of the present invention.

[0033] Figure 2 The flowchart is a method for detecting an object such as a car key or a mobile device based on UWB according to one embodiment of the present invention.

[0034] Figure 3 The flowchart shows a method for detecting an object such as a car key or a mobile device based on UWB according to another embodiment of the present invention. DETAILED DESCRIPTION

[0035] The following is a detailed description of the implementation scheme of the present invention. This implementation scheme is implemented on the premise of the technical solution of the present invention, and provides a detailed implementation method and specific operation process, but the protection scope of the present invention is not limited to the following implementation scheme.

[0036] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0037] Figure 1 The block diagram of a system for detecting an object such as a car key or a mobile device based on ultra-wide band (UWB) according to an embodiment of the present invention is shown. The system for detecting an object such as a car key or a mobile device based on UWB according to an embodiment of the present invention may include: an in-vehicle control device 100, an in-vehicle UWB communication device 200, an in-vehicle display device 300, and a car key 400 or a mobile device 500.

[0038] The car key 400 and the mobile device 500 may each be provided with a UWB communication module and may be capable of sending and receiving UWB communication signals, that is, each of the car key 400 and the mobile device 500 may be capable of UWB communication. The mobile device may include any portable mobile device, such as a mobile phone, a tablet computer, etc.

[0039] Ultra-wideband (UWB) technology is a wireless communication technology that uses nanosecond-scale pulses for data transmission. UWB technology enables centimeter-level position measurement and secure data communication at speeds up to 27 Mbps with very low power consumption and latency. Its high bandwidth and low power spectral density enable it to share spectrum with other narrowband and wideband wireless communication systems and provide a certain degree of interference resistance.

[0040] The vehicle-mounted UWB communication device 200 may be provided with a UWB processing module and a plurality of vehicle-mounted UWB communication modules. The UWB processing module may be communicatively connected to the plurality of vehicle-mounted UWB communication modules respectively through wired communication. The plurality of vehicle-mounted UWB communication modules may be configured to respectively perform UWB communication with the vehicle key 400 and the mobile device 500, and send the received UWB communication signals of the vehicle key 400 and / or the mobile device 500 to the UWB processing module. The UWB processing module may determine the location information of the vehicle key 400 and / or the mobile device 500 based on the received UWB communication signals of the vehicle key 400 and / or the mobile device 500, and convert the determined location information of the vehicle key 400 and / or the mobile device 500 into a vehicle-mounted communication signal.

[0041] The number of multiple on-board UWB communication modules can be three, four, five, six or more. According to an embodiment of the present invention, the multiple on-board UWB communication modules can be five, including a slave on-board UWB communication module arranged at the left front corner of the vehicle, a slave on-board UWB communication module arranged at the right front corner of the vehicle, a slave on-board UWB communication module arranged at the left rear corner of the vehicle, a slave on-board UWB communication module arranged at the right rear corner of the vehicle, and a master on-board UWB communication module arranged at a position near the ceiling of the front of the vehicle. However, the arrangement of the multiple on-board UWB communication modules is not limited to this and can be arranged according to the vehicle structure and actual needs.

[0042] The plurality of on-vehicle UWB communication modules may be communicatively connected to each other by wired communication, and one or more of the plurality of on-vehicle UWB communication modules may be communicatively connected to the on-vehicle control device 100. According to an embodiment of the present invention, only a master on-vehicle UWB communication module among the plurality of on-vehicle UWB communication modules may be directly communicatively connected to the on-vehicle control device 100, and the other slave on-vehicle UWB communication modules may be communicatively connected to the master on-vehicle UWB communication module.

[0043] In addition, one or more of the multiple vehicle-mounted UWB communication modules can also perform communication authentication with the vehicle key 400 and / or the mobile device 500. According to an embodiment of the present invention, only the master vehicle-mounted UWB communication module can perform communication authentication with the vehicle key 400 and / or the mobile device 500, and the other slave vehicle-mounted UWB communication modules can be configured to detect location information of the vehicle key 400 and / or the mobile device 500.

[0044] The vehicle-mounted control device 100 can be communicatively connected to the vehicle-mounted UWB communication device 200 via a wired communication method, and can be configured to generate a corresponding control signal based on the vehicle-mounted communication signal of the vehicle-mounted UWB communication device 200. According to an embodiment of the present invention, the vehicle-mounted control device 100 can be a body domain controller (BDC).

[0045] The vehicle-mounted display device 300 can be communicatively connected to the vehicle-mounted control device 100 via wired communication, and can be configured to display a three-dimensional image of the vehicle and a location icon of the vehicle key 400 and / or mobile device 500 in the vehicle and / or provide voice prompt information based on a control signal from the vehicle-mounted control device 100.

[0046] The in-vehicle display device 300 further includes a touch panel. In the three-dimensional image of the vehicle displayed on the touch panel, the driver can adjust the vehicle's display posture and the display angle of the vehicle key 400 and / or mobile device 500 by touching the touch panel, allowing the driver to view the position of the vehicle key and / or mobile device from multiple angles.

[0047] The in-vehicle display device 300 can be provided by a flat panel display device such as a liquid crystal display (LCD), an organic light-emitting diode (OLED), or a plasma display panel (PDP). According to an embodiment of the present invention, the in-vehicle display device 300 can be an audio video navigation telecommunications (AVNT) device. AVNT devices can implement practical functions such as AI intelligent voice control, remote control, real-time mobile phone connectivity, and GPS navigation.

[0048] According to an embodiment of the present invention, the wired communication method may include a controller area network (CAN), a universal serial bus (USB), a high-definition multimedia interface (HDMI), a digital visual interface (DVI), etc. Among them, the CAN communication method may include a powertrain CAN (P_CAN), a body control CAN (B_CAN), a chassis control CAN (C_CAN), etc. However, the embodiment of the present invention is not limited to the above communication methods.

[0049] Therefore, the UWB-based system for detecting items such as vehicle keys or mobile devices according to an embodiment of the present invention can accurately detect the location of the vehicle key and / or mobile device using the BDC and UWB communication module installed in the vehicle. The AVNT can also display a three-dimensional image of the vehicle, along with an icon and / or voice prompts indicating the location of the vehicle key and / or mobile device within the vehicle, allowing drivers and passengers to quickly and clearly determine the exact location of the vehicle key and / or mobile device. Furthermore, the positioning error can be accurate to within centimeters, and the location of the vehicle key and / or mobile device can be observed from multiple angles.

[0050] The system for detecting items such as car keys or mobile devices based on UWB according to an embodiment of the present invention may further include a search button 600. The search button 600 may be set on the steering wheel of the vehicle and electrically connected to the vehicle-mounted display device 300. When the search button 600 is pressed, the search button 600 may generate a search request signal for finding the car key 400 and / or the mobile device 500 and send the generated search request signal to the vehicle-mounted display device 300. The vehicle-mounted display device 300 communicates with the vehicle-mounted UWB communication device 200 via the vehicle-mounted control device 100, obtains information on whether the car key 400 and / or the mobile device 500 is present in the vehicle and the location information of the car key 400 and / or the mobile device 500, and provides corresponding image and / or voice prompt information.

[0051] According to the embodiment of the present invention, the mobile device 500 of the system for detecting items such as car keys or mobile devices based on UWB can further include a Bluetooth communication module and can send and receive Bluetooth communication signals. Accordingly, the vehicle-mounted display device 300 can further include a vehicle-mounted Bluetooth communication module, which can perform Bluetooth communication with the mobile device. In the three-dimensional image of the displayed vehicle, when the position icon of the mobile device 500 is touched, the vehicle-mounted display device 300 performs Bluetooth communication with the touched mobile device 500. For example, if the driver wants to make a Bluetooth connection with the passenger's mobile device 500, he can use the one-touch connection function to achieve Bluetooth connection with the mobile device 500 he wants to connect, thereby sharing the music of the passenger's mobile device 500, viewing the passenger's address book, etc.

[0052] Therefore, the UWB-based system for detecting items such as car keys or mobile devices according to an embodiment of the present invention also features a one-touch connection function. Specifically, when the location icon of a mobile device 500 is touched in the displayed three-dimensional image of the vehicle, the vehicle display device 300 directly establishes Bluetooth communication with the touched mobile device 500, thereby simplifying the Bluetooth connection process. This eliminates the existing complex steps of enabling Bluetooth through the settings function, finding the corresponding Bluetooth name in the list, and then connecting to Bluetooth.

[0053] The UWB-based system for detecting items such as car keys or mobile devices according to an embodiment of the present invention may further include a door lock button 700. The door lock button 700 may be located on the outside handle of the vehicle door and electrically connected to the in-vehicle control device 100. The door lock button 700 may be configured to detect whether the door lock button 700 is touched. Upon detecting that the door lock button 700 is touched, the door lock button 700 generates a touch signal and transmits the generated touch signal to the in-vehicle control device 100. The in-vehicle control device 100 may communicate with the in-vehicle UWB communication device 200 to obtain information on the presence of the car key 400 and / or mobile device 500 in the vehicle and the location information of the car key 400 and / or mobile device 500. If the car key 400 and / or mobile device 500 is located in the vehicle, the buzzer 800 may sound an alarm, and the in-vehicle display device 300 may provide corresponding image and / or voice prompt information.

[0054] The buzzer 800 may be electrically connected to the vehicle-mounted control device 100 , and the vehicle-mounted control device 100 may send a trigger signal to the buzzer 800 to cause the buzzer 800 to emit an alarm sound.

[0055] Therefore, according to the UWB-based system for detecting items such as car keys or mobile devices according to an embodiment of the present invention, when the vehicle is turned off and the car key 400 and / or mobile device 500 is left inside the vehicle, if the door lock button 700 on the outside door handle is pressed, not only will the buzzer 800 sound an alarm, but the in-vehicle display device 300 will also display an image and / or voice prompt information indicating the location of the car key 400 and / or mobile device 500 inside the vehicle. This helps the driver quickly find the car key 400 and / or mobile device 500 that has been lost or forgotten in the vehicle, improving user convenience and safety.

[0056] Refer to the following Figure 2 and Figure 3 The processing of the method for detecting objects such as car keys or mobile devices based on UWB is described with reference to a specific example.

[0057] Figure 2 FIG. 4 shows a process of searching for the car key 400 and the mobile device 500 by pressing the search button 600. Figure 2 In step S21 , when the search button 600 is pressed, the search button 600 may generate a search request signal for searching the vehicle key 400 and the mobile device 500 and transmit the generated search request signal to the vehicle display device 300 .

[0058] In step S22 , when the in-vehicle display device 300 receives the search request signal from the search button 600 , the in-vehicle display device 300 may send the received search request signal to the in-vehicle control device 100 .

[0059] In step S23 , upon receiving the search request signal from the in-vehicle display device 300 , the in-vehicle control device 100 may send a search instruction to the in-vehicle UWB communication device 200 .

[0060] In step S24, when receiving a search instruction from the vehicle-mounted control device 100, the vehicle-mounted UWB communication device 200 can perform UWB communication with the car key 400 and / or mobile device 500 in the car to determine whether the car key 400 and / or mobile device 500 exists in the car and the location information of the car key 400 and / or mobile device 500, and send the search result signal to the vehicle-mounted control device 100.

[0061] In step S25 , upon receiving the search result signal from the in-vehicle UWB communication device 200 , the in-vehicle control device 100 transmits the received search result signal to the in-vehicle display device 300 .

[0062] In step S26, when the search result signal received from the vehicle control device 100 is a signal indicating that the car key 400 and the mobile device 500 do not exist in the car, the vehicle display device 300 can provide voice prompt information, such as that the car key 400 and / or the mobile device 500 do not exist in the car.

[0063] In step S27, when the search result signal received from the vehicle-mounted control device 100 is a signal indicating that the car key 400 and / or the mobile device 500 exist in the vehicle, the vehicle-mounted display device 300 can provide image and voice prompt information, such as a three-dimensional image of the vehicle, and a location icon of the car key 400 and / or the mobile device 500 in the vehicle, and / or voice prompt information.

[0064] In step S28 , the in-vehicle display device 300 determines whether the location icon of the mobile device 500 is touched.

[0065] In step S29 , when the location icon of the mobile device is touched, the in-vehicle display device 300 performs Bluetooth communication with the mobile device 400 whose location icon is touched.

[0066] Therefore, the UWB-based method for detecting items such as car keys or mobile devices according to an embodiment of the present invention can accurately detect the location of the car key 400 and / or mobile device 500 through the vehicle-mounted control device 100 and the vehicle-mounted UWB communication module, and the vehicle-mounted display device 300 can display a three-dimensional image of the vehicle and an icon and / or voice prompt information indicating the location of the car key 400 and / or mobile device 500 in the vehicle, allowing the driver and passengers to quickly and clearly obtain the exact location of the car key 400 and / or mobile device 500. In addition, while the driver is driving the vehicle, if he wants to change the Bluetooth connection between the vehicle and the mobile device 400, he can press the search button 600 to cause the vehicle-mounted UWB communication module to search for the car key 400 and / or mobile device 500. The vehicle-mounted display device 300 will then display all mobile devices 500 in the vehicle, so that the driver can simply touch the mobile device icon on the vehicle-mounted display device 300 to establish a Bluetooth connection with the corresponding mobile device 500.

[0067] Figure 3 FIG. 4 shows a process of finding the car key 400 and / or the mobile device 500 by using the door lock button 700. Figure 3 In step S31, the onboard control device 100 detects whether the vehicle is turned off. If the vehicle is determined to be turned off, the onboard control device 100 determines in step S32 whether at least one door is opened and closed. If at least one door is opened and closed, the onboard control device 100 determines in step S33 whether all doors are closed. Through the above series of determinations, it can be confirmed whether the driver and / or passengers have exited the vehicle when the vehicle is turned off.

[0068] In step S34, the in-vehicle control device 100 determines whether a touch signal is received from the door lock button 700. If it is determined that the vehicle is off, at least one door is opened and closed, and all doors are closed, that is, if it is confirmed that the driver and / or passengers have gotten out of the vehicle with the vehicle off, it is determined whether the door lock button 700 on the outside door handle is touched to confirm whether the driver and / or passenger wants to lock the vehicle.

[0069] When it is determined that the vehicle is not turned off, or it is determined that at least one door is not opened and closed, or it is determined that at least one door is not closed, no subsequent judgment is performed, that is, it is not determined whether a touch signal from the door lock button 700 is received.

[0070] When it is determined that the touch signal from the door lock button 700 is received, the in-vehicle control device 100 transmits a search instruction to the in-vehicle UWB communication device 200 in step S35 .

[0071] When receiving a search instruction from the vehicle-mounted control device 100, in step S36, the vehicle-mounted UWB communication device 200 performs UWB communication with the car key 400 and / or the mobile device 500 to determine whether the car key 400 and / or the mobile device 500 exists in the vehicle and the location information of the car key 400 and / or the mobile device 500, and sends a search result signal to the vehicle-mounted control device 100.

[0072] In step S37 , upon receiving the search result signal from the in-vehicle UWB communication device 200 , the in-vehicle control device 100 transmits the received search result signal to the in-vehicle display device 300 .

[0073] In step S38, when the search result signal received from the vehicle control device 100 is a signal indicating that the car key 400 and the mobile device 500 do not exist in the car, the vehicle display device 300 provides voice prompt information, such as the car key 400 and / or the mobile device 500 do not exist in the car.

[0074] In step S39, when the search result signal received from the vehicle-mounted control device 100 is a signal indicating that the car key 400 and / or the mobile device 500 exists in the vehicle, the vehicle-mounted display device 300 provides image and / or voice prompt information, such as a three-dimensional image of the vehicle, and a location icon and / or voice prompt information of the car key 400 and / or the mobile device 500 in the vehicle.

[0075] According to the UWB-based method for detecting objects such as car keys or mobile devices, according to an embodiment of the present invention, if the door lock button 700 on the exterior door handle is pressed while the vehicle is turned off and the car key 400 and / or mobile device 500 is left inside, this can indicate that the driver has forgotten the car key 400 and / or mobile device 500 inside the vehicle. In this case, when the driver attempts to lock the vehicle and leave, not only will the buzzer 800 sound an alarm, but the AVNT can also display an image and / or voice prompt of the car key 400 and / or mobile device 500's location inside the vehicle. This helps the driver quickly find the lost or forgotten car key 400 and / or mobile device 500, improving user convenience and safety.

[0076] The various embodiments of the invention are not an exhaustive list of all possible combinations, but are intended to describe representative aspects of the invention, and what is described in terms of various embodiments can be applied independently or in combinations of two or more.

[0077] The descriptions presented in the above exemplary embodiments are only intended to illustrate the technical solutions of the present invention and are not intended to be exhaustive or to limit the present invention to the precise forms described. Obviously, it is possible for a person of ordinary skill in the art to make many changes and variations based on the above teachings. The exemplary embodiments are selected and described to explain the specific principles of the present invention and its practical applications, so that other persons of ordinary skill in the art can easily understand, implement and utilize the various exemplary embodiments of the present invention and its various selected forms and modified forms. The scope of protection of the present invention is intended to be defined by the appended claims and their equivalents.

Claims

1. A system for detecting objects in a vehicle based on UWB, comprising: An article provided with a UWB communication module and capable of sending and receiving UWB communication signals; An in-vehicle UWB communication device, comprising a UWB processing module and a plurality of in-vehicle UWB communication modules, wherein the UWB processing module and the plurality of in-vehicle UWB communication modules are communicatively connected, the plurality of in-vehicle UWB communication modules are configured to perform UWB communication with the object and transmit received UWB communication signals of the object to the UWB processing module, the UWB processing module determining location information of the object based on the received UWB communication signals of the object and converting the determined location information of the object into an in-vehicle communication signal; an on-vehicle control device communicatively connected to the on-vehicle UWB communication device, wherein the on-vehicle control device is configured to generate a corresponding control signal based on an on-vehicle communication signal of the on-vehicle UWB communication device; and A vehicle-mounted display device is communicatively connected to the vehicle-mounted control device, wherein the vehicle-mounted display device is configured to display a three-dimensional image of the vehicle, as well as location icons and / or voice prompt information of items in the vehicle based on a control signal of the vehicle-mounted control device.

2. The system for detecting objects in a vehicle based on UWB according to claim 1, wherein: The item is a car key or a mobile device.

3. The UWB-based system for detecting objects in a vehicle according to claim 2, further comprising a search button disposed on the vehicle steering wheel and electrically connected to the vehicle display device. The search button is configured to generate a search request signal for searching for an item and transmit the generated search request signal to the vehicle-mounted display device when the search button is pressed; The vehicle-mounted display device is further configured to: when receiving a search request signal from the search button, send the received search request signal to the vehicle-mounted control device; when the search result signal received from the vehicle-mounted control device is a signal indicating that the item is not present in the vehicle, provide a voice prompt message; when the search result signal received from the vehicle-mounted control device is a signal indicating that the item is present in the vehicle, display a location icon of the item in the vehicle and / or a voice prompt message; The vehicle-mounted control device is further configured to: upon receiving a search request signal from the vehicle-mounted display device, send a search instruction to the vehicle-mounted UWB communication device, and upon receiving a search result signal from the vehicle-mounted UWB communication device, send the received search result signal to the vehicle-mounted display device; The vehicle-mounted UWB communication device is further configured to: when receiving a search instruction from the vehicle-mounted control device, perform UWB communication with the object, determine whether the object exists in the vehicle and the location information of the object, and send a search result signal to the vehicle-mounted control device.

4. The UWB-based system for detecting in-vehicle objects according to claim 3, further comprising a door lock button disposed on an exterior door handle and electrically connected to the vehicle-mounted control device, the door lock button being configured to detect whether the door lock button is touched, and upon detecting that the door lock button is touched, generating a touch signal and transmitting the generated touch signal to the vehicle-mounted control device; The vehicle-mounted control device is further configured to determine whether a touch signal from a door lock button is received, and when it is determined that a touch signal from the door lock button is received, if the object is located in the vehicle, cause a buzzer to sound an alarm, and cause the location of the object in the vehicle to be displayed on the vehicle-mounted display device.

5. The system for detecting objects in a vehicle based on UWB according to claim 4, wherein: The vehicle-mounted control device is further configured to: before determining whether a touch signal from a door lock button is received, Detect whether the vehicle is turned off; When it is determined that the vehicle is turned off, determining whether at least one door is opened and closed; When it is determined that at least one door is opened and closed, it is determined whether all the doors are closed.

6. The system for detecting objects in a vehicle based on UWB according to claim 5, wherein: The vehicle-mounted control device is further configured to determine whether a touch signal from a door lock button is received when it is determined that the vehicle is not turned off, or that at least one door is not opened and closed, or that any door is not closed.

7. The system for detecting objects in a vehicle based on UWB according to claim 4, wherein: The vehicle-mounted control device is further configured to: when determining that a touch signal from a door lock button is received, send a search instruction to the vehicle-mounted UWB communication device, and when receiving a search result signal from the vehicle-mounted UWB communication device, send the received search result signal to the vehicle-mounted display device; The vehicle-mounted UWB communication device is further configured to, upon receiving a search instruction from the vehicle-mounted control device, perform UWB communication with the item in the vehicle, determine whether the item exists in the vehicle and the location information of the item, and send a search result signal to the vehicle-mounted control device; The vehicle-mounted display device is further configured to: provide voice prompt information when the search result signal received from the vehicle-mounted control device is a signal indicating that the item does not exist in the vehicle, and display the location icon and / or voice prompt information of the item in the vehicle when the search result signal received from the vehicle-mounted control device is a signal indicating that the item exists in the vehicle.

8. The system for detecting objects in a vehicle based on UWB according to claim 2, wherein: The mobile device further includes a Bluetooth communication module and is capable of sending and receiving Bluetooth communication signals; The vehicle-mounted display device further includes a vehicle-mounted Bluetooth communication module and a touch panel, the vehicle-mounted Bluetooth communication module is capable of performing Bluetooth communication with a mobile device, and the vehicle-mounted display device is further configured to enable the vehicle-mounted display device to perform Bluetooth communication with the touched mobile device when the location icon of the mobile device is touched in the three-dimensional image of the vehicle displayed on the touch panel.

9. The system for detecting objects in a vehicle based on UWB according to claim 8, wherein: In the three-dimensional image of the vehicle displayed on the touch panel, the display posture of the vehicle and the display angle of the object are adjusted by touching the touch panel.

10. The system for detecting objects in a vehicle based on UWB according to claim 1, wherein: The number of the plurality of vehicle-mounted UWB communication modules is five, and they are respectively arranged at the left front corner, the right front corner, the left rear corner, the right rear corner and a position near the ceiling of the front of the vehicle; The vehicle-mounted communication signal includes a wired communication signal.

11. A method for detecting objects in a vehicle based on UWB, comprising: UWB communication signals are sent and received by objects in the vehicle; The vehicle-mounted UWB communication device determines the location information of the object in the vehicle based on the received UWB communication signal, and converts the determined location information of the object into the vehicle-mounted communication signal; The vehicle-mounted control device generates a corresponding control signal based on the vehicle-mounted UWB communication device's vehicle-mounted communication signal; The vehicle-mounted display device displays a three-dimensional image of the vehicle, an icon indicating the location of the object in the vehicle, and / or voice prompt information based on a control signal from the vehicle-mounted control device.

12. The method for detecting objects in a vehicle based on UWB according to claim 11, wherein: The item is a car key or a mobile device.

13. The method for detecting objects in a vehicle based on UWB according to claim 12, further comprising: When the search button is pressed, a search request signal for searching for an item in the vehicle is generated and the generated search request signal is sent to the vehicle-mounted display device; When a search request signal is received from the search button, the vehicle-mounted display device transmits the received search request signal to the vehicle-mounted control device. When the search result signal received from the vehicle-mounted control device indicates that the item is not present in the vehicle, the vehicle-mounted display device provides a voice prompt message. When the search result signal received from the vehicle-mounted control device indicates that the item is present in the vehicle, the vehicle-mounted display device displays a location icon of the item in the vehicle and / or a voice prompt message. When receiving a search request signal from the on-vehicle display device, the on-vehicle control device sends a search instruction to the on-vehicle UWB communication device, and when receiving a search result signal from the on-vehicle UWB communication device, the on-vehicle control device sends the received search result signal to the on-vehicle display device; When receiving a search instruction from the vehicle-mounted control device, the vehicle-mounted UWB communication device determines whether there is an object in the vehicle and the location information of the object, and sends a search result signal to the vehicle-mounted control device.

14. The method for detecting objects in a vehicle based on UWB according to claim 13, further comprising: Detecting whether a door lock button is touched, and when it is detected that the door lock button is touched, generating a touch signal by the door lock button and sending the generated touch signal to the vehicle control device; The vehicle-mounted control device determines whether a touch signal from the door lock button is received. When it is determined that a touch signal from the door lock button is received, if the object is located in the vehicle, the buzzer sounds an alarm and the location of the object in the vehicle is displayed on the vehicle-mounted display device.

15. The method for detecting objects in a vehicle based on UWB according to claim 14, wherein: Before determining whether a touch signal from the door lock button is received, Detect whether the vehicle is turned off; When it is determined that the vehicle is turned off, determining whether at least one door is opened and closed; When it is determined that at least one door is opened and closed, it is determined whether all the doors are closed.

16. The method for detecting objects in a vehicle based on UWB according to claim 15, wherein: When it is determined that the vehicle is not turned off, or it is determined that at least one door is not opened and closed, or it is determined that any door is not closed, it is not determined whether a touch signal from the door lock button is received.

17. The method for detecting objects in a vehicle based on UWB according to claim 14, wherein: When it is determined that a touch signal from the door lock button is received, the vehicle-mounted control device sends a search instruction to the vehicle-mounted UWB communication device, and when a search result signal from the vehicle-mounted UWB communication device is received, the vehicle-mounted control device sends the received search result signal to the vehicle-mounted display device; When receiving a search instruction from the vehicle-mounted control device, the vehicle-mounted UWB communication device determines whether there is an object in the vehicle and the location information of the object, and sends a search result signal to the vehicle-mounted control device; When the search result signal received from the vehicle-mounted control device is a signal indicating that there is no item in the vehicle, the vehicle-mounted display device provides voice prompt information, and when the search result signal received from the vehicle-mounted control device is a signal indicating that there is an item in the vehicle, the vehicle-mounted display device displays the location icon of the item in the vehicle and / or voice prompt information.

18. The method for detecting objects in a vehicle based on UWB according to claim 12, wherein: When a location icon of a mobile device is touched in the three-dimensional image of the vehicle displayed on the touch panel of the in-vehicle display device, the in-vehicle display device performs Bluetooth communication with the touched mobile device.

19. The method for detecting objects in a vehicle based on UWB according to claim 18, wherein: In a three-dimensional image of a vehicle displayed on a touch panel of an in-vehicle display device, the display posture of the vehicle and the display angle of an object are adjusted by touching the touch panel.

20. The method for detecting objects in a vehicle based on UWB according to claim 11, wherein: The vehicle-mounted UWB communication device is provided with a plurality of vehicle-mounted UWB communication modules, the number of the plurality of vehicle-mounted UWB communication modules is five, and the modules are respectively arranged at the left front corner, the right front corner, the left rear corner, the right rear corner and a position near the ceiling of the front of the vehicle; The vehicle-mounted communication signal includes a wired communication signal.

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