A communication method, system and apparatus

Abstract

A communication method, system and device, wherein the method comprises: a positioning device sending a first wireless signal and receiving at least one response signal from at least one responding device in response to the first wireless signal, and then the positioning device sending information corresponding to the at least one response signal to a control device, the information of the first response signal being used to indicate that a target object is located in a vehicle, so that the control device outputs a prompt indication signal after receiving the information, the prompt indication signal being used to instruct at least one output device to output a prompt signal, thereby helping to effectively detect whether the target object is in the vehicle and timely remind the user when the target object is left in the vehicle.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and in particular to a communication method, system and device. Background Technology

[0002] With the rapid development of the automotive industry, new intelligent vehicles such as gasoline-powered cars and electric cars have entered the lives of a large number of people, becoming the preferred means of transportation for people's travel and gradually becoming one of the consumer products for families or individuals.

[0003] Especially with the deep integration of the information and communication technology (ICT) industry and traditional automakers, the interaction between passenger vehicle cabin systems and drivers or passengers has been gradually promoted and commercialized. For example, the interaction between mobile navigation applications (APPs) and the cabin's central control screen, as well as the driver answering phone calls while the vehicle is in motion, all require the connection and interoperability between smart terminals (such as smart terminals, tablets, laptops, etc.) and in-vehicle terminal peripherals. However, connecting smart terminals with in-vehicle terminal peripherals for information exchange also brings problems. Since interoperability between smart terminals and in-vehicle terminal peripherals generally requires a physical connection, drivers or passengers habitually place smart terminals in a fixed position in the cabin. When drivers or passengers leave the vehicle after parking, they often leave the smart terminals behind. In addition, there are frequent cases where infants and young children are left in the car due to parental negligence. With child locks in the car, infants and young children cannot open the doors from the inside and cannot effectively call for help, resulting in children being locked inside the car for extended periods.

[0004] Currently, the detection methods for objects left inside vehicles mainly include the following: For example, image recognition based on camera images for detecting smart terminals or living beings. However, this method is ineffective when the object is obscured. Another example is detecting the presence of a wired smart terminal after the car is locked; however, this method cannot effectively detect smart terminals not connected to the vehicle. Yet another example is using audio or infrared detection for living beings. However, audio detection may fail to detect a sleeping or silent living being inside the vehicle, and infrared detection may be ineffective due to interference. These methods are ineffective at detecting objects left inside the vehicle, thus failing to promptly alert the user. Summary of the Invention

[0005] This application provides a communication method, system, and apparatus for effectively detecting target objects left inside a vehicle and promptly alerting the user.

[0006] In a first aspect, this application provides a communication method performed by a positioning device, the method comprising: the positioning device transmitting a first wireless signal and receiving at least one response signal from at least one responding device in response to the first wireless signal; and then the positioning device transmitting information corresponding to the at least one response signal to a control device, the information of the first response signal being used to indicate that a target object is located inside a vehicle.

[0007] Through this method, the positioning device communicates with the response device by sending a first wireless signal, receives at least one response signal from at least one response device in response to the first wireless signal, and then sends information indicating that the target object is inside the vehicle to the control device. After receiving the information, the control device outputs a reminder indication signal, which instructs at least one output device to output a reminder signal. This helps to effectively detect whether the target object is inside the vehicle and promptly remind the user when the target object is left inside the vehicle.

[0008] In one possible design, the first wireless signal may be a first wireless ranging signal, and the information corresponding to at least one response signal may be first ranging information, used to indicate the distance from the positioning device to at least one responding device.

[0009] In one possible design, when at least one responding device includes a car key and a target object, the positioning device receives at least one response signal from the at least one responding device in response to a first wireless signal. This may include the positioning device receiving a first wireless response signal from the car key and a second wireless response signal from the target object, wherein first ranging information is used to indicate a first distance from the positioning device to the car key and a second distance from the positioning device to the target object. With this design, the positioning device can communicate separately with the car key and the target object to determine the difference between the distances from the positioning device to the car key and the target object, respectively, thereby determining whether the target object was left inside the vehicle based on the difference.

[0010] In one possible design, the method further includes: the control device determining that the difference between a first distance and a second distance is greater than or equal to a first threshold, and outputting a reminder indication signal, the reminder indication signal being used to instruct at least one output device to output a reminder signal. In this design, the difference between the distances from the positioning device to the car key and the target object is determined. If the difference is greater than or equal to the first threshold, it indicates that the target object is left in the vehicle, and the control device outputs a reminder indication signal to instruct at least one output device to output a reminder signal, which helps to provide timely reminders when the target object is left in the vehicle; if the difference is less than the first threshold, it indicates that the target object is not left in the vehicle, and the control device does not output a reminder indication signal.

[0011] In one possible design, at least one responding device includes a target object, and the positioning device receives at least one response signal from the at least one responding device in response to a first wireless signal. This may include: the positioning device receiving a second wireless response signal from the target object, and first ranging information used to indicate a second distance from the positioning device to the target object. In this design, the distance between the positioning device and the target object is determined through communication between the positioning device and the target object, thereby determining whether the target object is left inside the vehicle based on the distance between the positioning device and the target object.

[0012] In one possible design, the method further includes: the control device determines that the second distance is greater than or equal to the second threshold, and outputs a reminder indication signal, the reminder indication signal being used to instruct at least one output device to output a reminder signal, so as to instruct at least one output device to output a reminder signal, which helps to provide timely reminders when a target object is left in the vehicle; if the second distance is less than the second threshold, it indicates that the target object is not left in the vehicle, and the control device does not output a reminder indication signal.

[0013] In one possible design, the positioning device transmits a first wireless signal, which may include: the positioning device transmitting the first wireless signal according to a first period, or transmitting the first wireless signal according to a first rule. With this design, the positioning device can periodically transmit the first wireless signal, or transmit the first wireless signal according to a certain rule, thereby providing timely alerts when a target object is left inside the vehicle.

[0014] In one possible design, the positioning device sending a first wireless signal may include: the positioning device sending the first wireless signal in response to a first ranging request, the first ranging request originating from a central controller. This design allows the positioning device to perform ranging by being triggered by the first ranging request, enabling on-demand ranging and saving power compared to periodic ranging.

[0015] In one possible design, the first ranging information includes one or more of the following:

[0016] The time when the positioning device sends the first wireless signal;

[0017] The time at which at least one responding device receives the first wireless signal;

[0018] The time it takes for the positioning device to receive at least one response signal;

[0019] The time at which at least one responding device sends at least one response signal;

[0020] At least one time interval between the time when the positioning device sends the first wireless signal and the time when it receives at least one response signal;

[0021] The time interval between the time when at least one responding device receives the first wireless signal and the time when at least one acknowledgment signal is sent.

[0022] In one possible design, at least one response signal is used to indicate one or more of the following:

[0023] The time at which at least one responding device receives the first wireless signal;

[0024] The time at which at least one responding device sends at least one response signal;

[0025] The time interval between the time at which at least one responding device receives the first wireless signal and the time at which at least one acknowledgment signal is sent.

[0026] In one possible design, the target object includes: a smart terminal, or a seat with a wireless communication module.

[0027] Secondly, this application provides a communication method executed by a control device, the method comprising: the control device receiving information from a positioning device corresponding to at least one response signal, the information corresponding to at least one response signal being used to indicate that a target object is located inside a vehicle; and the control device outputting a reminder indication signal based on the information corresponding to at least one response signal, the reminder indication signal being used to instruct at least one output device to output a reminder signal.

[0028] With this method, after receiving information corresponding to at least one response signal, the control device can output a reminder indication signal to instruct at least one output device to output a reminder signal, thereby helping to effectively detect whether the target object is inside the vehicle and promptly remind the user.

[0029] In one possible design, the information corresponding to at least one response signal can be first ranging information, which indicates the distance from the positioning device to at least one response device. After the control device receives the first ranging information from the positioning device, it outputs a reminder indication signal based on the first ranging information. This reminder indication signal instructs at least one output device to output a reminder signal. In this design, the output of the reminder indication signal based on the distance from the positioning device to at least one response device indicated in the first ranging information can promptly remind the user when a target object is left inside the vehicle.

[0030] In one possible design, at least one response device includes a car key and a target object; first ranging information is used to indicate a first distance from the locating device to the car key, and a second distance from the locating device to the target object. In this design, the control device can determine whether the target object is left inside the vehicle based on the first ranging information, thereby facilitating timely alerts when the target object is left inside the vehicle.

[0031] In one possible design, the control device outputs a reminder signal based on first ranging information, including: the control device determining that the difference between a first distance and a second distance is greater than or equal to a first threshold, and then outputting the reminder signal. In this design, the difference between the distances from the positioning device to the car key and the target object is determined. If the difference is greater than or equal to the first threshold, it indicates that the target object is left in the vehicle, and the control device outputs a reminder signal to instruct at least one output device to output a reminder signal, which helps to provide timely reminders when the target object is left in the vehicle; if the difference is less than the first threshold, it indicates that the target object is not left in the vehicle, and the control device does not output a reminder signal.

[0032] In one possible design, at least one response device includes a target object; first ranging information is used to indicate a second distance from the positioning device to the target object. In this design, the control device can determine whether the target object is left inside the vehicle based on the first ranging information, thereby facilitating timely alerts when the target object is left inside the vehicle.

[0033] In one possible design, the control device outputs a reminder indication signal based on the first distance measurement information, including: the control device determines that the second distance is greater than or equal to the second threshold, and outputs the reminder indication signal to instruct at least one output device to output a reminder signal, which helps to provide timely reminders when a target object is left in the vehicle; if the second distance is less than the second threshold, it indicates that the target object is not left in the vehicle, and the control device does not output the reminder indication signal.

[0034] In one possible design, before the control device receives the first ranging information from the positioning device, the control device may also send a first ranging request to the positioning device to trigger the positioning device to send a first wireless signal.

[0035] In one possible design, the control device sends a first ranging request to the positioning device, including: the control device receiving a first signal, which includes a door opening signal or a door locking signal; and the control device responding to the first signal by sending the first ranging request to the positioning device. With this design, when the door is opened or locked, the positioning device is triggered to perform ranging, thereby allowing the detection of whether any target object is left inside the vehicle after the driver exits.

[0036] In one possible design, the alert signal output by at least one output device includes one or more of the following:

[0037] The vehicle's in-car audio system broadcasts voice reminders;

[0038] The vehicle's ambient lighting flashes as a reminder;

[0039] The vehicle's display screen shows a reminder message;

[0040] The vehicle key makes a sound or vibrates;

[0041] The target object outputs sound or vibration.

[0042] In one possible design, the first ranging information includes one or more of the following:

[0043] The timing of the positioning device sending the first wireless signal, wherein the first wireless signal is used to trigger the response device that receives the first wireless signal to send a corresponding response signal;

[0044] The time at which at least one responding device receives the first wireless signal;

[0045] The time at which the positioning device receives at least one response signal, wherein the at least one response signal is sent by the at least one responding device in response to the first wireless signal;

[0046] The time at which at least one responding device sends at least one response signal;

[0047] At least one time interval between the time when the positioning device sends the first wireless signal and the time when it receives at least one response signal;

[0048] The time interval between the time when at least one responding device receives the first wireless signal and the time when at least one acknowledgment signal is sent.

[0049] In one possible design, at least one response signal is used to indicate one or more of the following:

[0050] The time at which at least one responding device receives the first wireless signal;

[0051] The time at which at least one responding device sends at least one response signal;

[0052] The time interval between the time at which at least one responding device receives the first wireless signal and the time at which at least one acknowledgment signal is sent.

[0053] In one possible design, the target object includes: a smart terminal, or a seat with a wireless communication module.

[0054] Thirdly, this application provides a communication method performed by a response device, the method comprising: the response device receiving a first wireless signal from a positioning device and sending a response signal to the positioning device in response to the first wireless signal.

[0055] This method enables communication between the response device and the positioning device. When a target object is left inside the vehicle, the positioning device promptly sends information indicating that the target object is inside the vehicle to the control device. Upon receiving the information, the control device outputs a reminder signal, which instructs at least one output device to output a reminder signal. This helps to effectively detect whether the target object is inside the vehicle and promptly remind the user.

[0056] In one possible design, the responding device includes any of the following:

[0057] Car keys;

[0058] Smart terminals;

[0059] Seats equipped with wireless communication modules.

[0060] In one possible design, the responding device is a seat with a wireless communication module. The seat is equipped with a pressure sensor or a switch. The responding device receives a first wireless signal from the positioning device, which may include: when the pressure detected by the pressure sensor is greater than or equal to a pressure threshold or the switch is in the open state, the responding device receives the first wireless signal from the positioning device through the wireless communication module; the responding device sends a response signal to the positioning device in response to the first wireless signal, which may include: the responding device sends a response signal to the positioning device in response to the first wireless signal through the wireless communication module.

[0061] This design effectively detects whether any living beings are left in the vehicle on the seats and promptly alerts the user when such a person is left inside.

[0062] Fourthly, this application provides a communication system including a positioning device and a control device located in a vehicle;

[0063] A positioning device is configured to: transmit a first wireless signal; receive at least one response signal from at least one responding device in response to the first wireless signal; and transmit first ranging information corresponding to the at least one response signal to a control device, the first ranging information indicating the distance from the positioning device to the at least one responding device.

[0064] A control device is configured to: receive first ranging information from a positioning device; and output a reminder indication signal based on the first ranging information, wherein the reminder indication signal is used to instruct at least one output device to output a reminder signal.

[0065] In one possible design, at least one response device includes a car key and a target object; a positioning device specifically configured to: receive a first wireless response signal from the car key; receive a second wireless response signal from the target object; and first ranging information is used to indicate a first distance from the positioning device to the car key, and a second distance from the positioning device to the target object.

[0066] In one possible design, the control device is specifically used to: determine that the difference between the first distance and the second distance is greater than or equal to a first threshold, and output an alert indication signal.

[0067] In one possible design, at least one response device includes a target object; first ranging information is used to indicate a second distance from the positioning device to the target object; the positioning device is specifically used to: receive a second wireless response signal from the target object; the first ranging information is used to indicate the second distance from the positioning device to the target object.

[0068] In one possible design, the control device is specifically used to: determine that the second distance is greater than or equal to the second threshold, and output an alert indication signal.

[0069] In one possible design, the control device is further configured to: send a first ranging request to the positioning device; the positioning device is specifically configured to: send a first wireless signal in response to the first ranging request.

[0070] In one possible design, the control device is specifically configured to: receive a first signal, the first signal including a door opening signal or a door locking signal; and in response to the first signal, send a first ranging request to the positioning device.

[0071] In one possible design, the positioning device is specifically used to: transmit a first wireless signal according to a first cycle, or transmit a first wireless signal according to a first rule.

[0072] In one possible design, the first ranging information includes one or more of the following: the time when the positioning device transmits the first wireless signal; the time when at least one responding device receives the first wireless signal;

[0073] The time when the positioning device receives at least one response signal; the time when at least one responding device sends at least one response signal; at least one time interval between the time when the positioning device sends a first wireless signal and the time when it receives at least one response signal; at least one time interval between the time when the at least one responding device receives the first wireless signal and the time when it sends at least one response signal.

[0074] In one possible design, at least one response signal is used to indicate one or more of the following:

[0075] The time at which at least one responding device receives the first wireless signal;

[0076] The time at which at least one responding device sends at least one response signal;

[0077] The time interval between the time at which at least one responding device receives the first wireless signal and the time at which at least one acknowledgment signal is sent.

[0078] In one possible design, the target object includes: a smart terminal, or a seat with a wireless communication module.

[0079] In one possible design, the communication system also includes a seat with a wireless communication module, wherein a pressure sensor or switch is provided in the seat; the seat with the wireless communication module is specifically used to: receive a first wireless signal from the positioning device through the wireless communication module when the pressure detected by the pressure sensor is greater than or equal to a pressure threshold or the switch is in the open state; and send a response signal to the positioning device in response to the first wireless signal through the wireless communication module.

[0080] Fifthly, this application provides a communication apparatus for performing the methods in the foregoing aspects or any possible implementations thereof. Specifically, the communication apparatus may include modules / units for performing the methods in the foregoing aspects or any possible implementations thereof; these modules / units may be implemented in hardware or by hardware executing corresponding software.

[0081] Sixthly, this application also provides a communication device, which includes at least one processor and a communication interface. The communication interface is used to receive signals from other communication devices besides the communication device and transmit them to the at least one processor, or to send signals from the at least one processor to other communication devices besides the communication device. The at least one processor is used through logic circuits or execution code instructions to implement the operation steps of the method as described in the first aspect or any possible implementation of the first aspect, or to implement the operation steps of the method as described in the second aspect or any possible implementation of the second aspect, or to implement the operation steps of the method as described in the third aspect or any possible implementation of the third aspect.

[0082] In a seventh aspect, this application also provides a vehicle comprising means for performing the method in the first aspect or any possible implementation thereof, and means for performing the method in the second aspect or any possible implementation thereof; or, the vehicle comprising means for performing the method in the first aspect or any possible implementation thereof, means for performing the method in the second aspect or any possible implementation thereof, and means for performing the method in the third aspect or any possible implementation thereof.

[0083] Eighthly, this application also provides a computer-readable storage medium storing a computer program that, when executed, implements the operation steps of the method as described in the first aspect or any possible implementation of the first aspect, or implements the operation steps of the method as described in the second aspect or any possible implementation of the second aspect, or implements the operation steps of the method as described in the third aspect or any possible implementation of the third aspect.

[0084] Ninthly, this application also provides a computer program product comprising a computer program or instructions that, when executed by a communication device, implement the operation steps of the method as described in the first aspect or any possible implementation of the first aspect, or implement the operation steps of the method as described in the second aspect or any possible implementation of the second aspect, or implement the operation steps of the method as described in the third aspect or any possible implementation of the third aspect.

[0085] The beneficial effects of any possible implementation of any of the fourth to ninth aspects mentioned above can be found in the beneficial effects of the relevant content in the first to third aspects, and will not be repeated here. Attached Figure Description

[0086] Figure 1A schematic diagram of the communication system provided in the embodiments of this application;

[0087] Figure 2 A flowchart illustrating the communication method provided in an embodiment of this application;

[0088] Figure 3 This is a schematic diagram of distance difference detection provided in an embodiment of this application;

[0089] Figure 4 The distance measurement principle diagram provided in the embodiments of this application;

[0090] Figure 5 This is a schematic diagram of single distance detection provided in an embodiment of this application;

[0091] Figure 6 A schematic diagram of an information processing device provided in an embodiment of this application;

[0092] Figure 7 A schematic diagram of an information processing device provided in an embodiment of this application;

[0093] Figure 8 A schematic diagram of an information processing device provided in an embodiment of this application. Detailed Implementation

[0094] The present application will now be described in further detail with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present application. The specific operating methods in the method embodiments can also be applied to the device embodiments. In the description of the embodiments of the present application, those skilled in the art will understand that the various numerical designations such as "first," "second," etc., involved in the present application are merely for the convenience of description and are not used to limit the scope of the embodiments of the present application, nor are they used to indicate the order of events. "Multiple" means two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. "At least one" refers to one or more. "At least two" refers to two or more. "At least one," "any one," or similar expressions refer to any combination of these items, including any combination of a single item or a plurality of items.

[0095] As vehicle cockpit systems and driver / passenger interaction functions become increasingly widespread and commercially available, interaction between smart terminals and cockpit systems generally requires a physical connection. Drivers or passengers habitually place smart terminals in a fixed location within the cockpit, often leaving them behind when leaving the vehicle after parking. Furthermore, cases frequently occur where infants and toddlers are left in vehicles due to parental negligence. With child locks in the car, infants and toddlers cannot open the doors from the inside and are unable to effectively call for help, resulting in them being confined inside for extended periods. Currently, the main methods for detecting smart terminals or living beings left in vehicles in the above scenarios include: For example, image recognition based on camera images for smart terminal or living being detection; however, this method is ineffective when the object being identified is obstructed. Another example is detecting the presence of a wired smart terminal after locking the car; however, this method cannot effectively detect smart terminals not connected to the vehicle. Yet another example is using audio or infrared detection for living being detection; audio detection may fail to detect a living being in the car when the creature is asleep and silent, and infrared detection may fail to detect a living being in the car when interference occurs. However, these methods cannot effectively detect objects left in the car, thus failing to promptly alert the user.

[0096] In view of this, embodiments of this application provide a communication method in which a positioning device sends a first wireless signal and receives at least one response signal from at least one responding device in response to the first wireless signal. The positioning device then sends information corresponding to the at least one response signal to the control device. The information of the first response signal is used to indicate that a target object is located inside the vehicle. The control device can then output a reminder indication signal based on the information corresponding to the at least one response signal. The reminder indication signal is used to instruct at least one output device to output a reminder signal, thereby enabling effective detection of smart terminals or living beings left in the vehicle and timely reminders to the user.

[0097] The following provides a communication system applicable to embodiments of this application, which includes a control device, a positioning device, an output device, and a response device.

[0098] The control device can be used to perform functions such as controlling turn signals, tire pressure, and door locks. It can also receive information from the positioning device corresponding to at least one response signal, which indicates that the target object is located inside the vehicle. For example, the control device is... Figure 1 The vehicle body control module (BCM) or a functional module within the BCM.

[0099] The positioning device can be used for wireless ranging or positioning. In one possible implementation, the positioning device can transmit wireless signals and receive response signals from responding devices in response to the wireless signals. In some scenarios, the positioning device can be... Figure 1 In some scenarios, the positioning station can be used for positioning; in others, the positioning device can provide positioning services. Figure 1 The car key in the middle.

[0100] The response device is used to receive a first wireless signal from the positioning device and send a response signal to the positioning device in response to the first wireless signal. For example, the response device is a smart terminal, or a car seat, child seat, etc.

[0101] The output device is used to receive a reminder indication signal from the control device, which instructs at least one output device to output a reminder signal. The output device may be, for example, any one or more of a car audio system, a vehicle display screen, an ambient light, a car key, or a smart terminal.

[0102] like Figure 1 The communication system shown may also include other devices, such as an in-vehicle gateway, a cockpit domain controller (CDC), and a vehicle integrated unit (VIU). The in-vehicle gateway is used for data forwarding between different domain control modules, the CDC is used for access management and data exchange within the cockpit domain, including audio equipment, central control screen, and mobile terminals, and the VIU is used for gateway connection and local computing unit.

[0103] It should be understood that Figure 1 This is merely a schematic diagram of the architecture of a communication system. The communication systems applicable to the embodiments of this application may include, in addition to, those shown below. Figure 1 In addition to the BCM, car key, CDC, VIU, and gateway shown, other devices may also be included, which will not be listed here.

[0104] The communication method of this application embodiment is described below with reference to the method flowchart.

[0105] Figure 2 A flowchart illustrating a communication method according to an embodiment of this application is shown. Figure 2 As shown, the method may include the following steps:

[0106] Step 201: The positioning device sends a first wireless signal. This first wireless signal triggers a response device that receives the first wireless signal to send a corresponding response signal.

[0107] Here, the positioning device can be an in-vehicle positioning device, for example... Figure 1 The positioning station shown can also be Figure 1 The car key shown is an example. This positioning device can be integrated with other devices in the vehicle, or it can be set up independently; this application does not specifically limit this.

[0108] In this application embodiment, there are several possible implementations for the positioning device to send the first wireless signal in step 201. Possible implementation a1 and possible implementation a2 are provided below.

[0109] In a possible implementation a1, the control device sends a first ranging request to the positioning device, and then the positioning device, upon receiving the first ranging request, responds by sending a first wireless signal.

[0110] The first ranging request can originate directly or indirectly from the central controller. For example, the central controller could be the vehicle's body controller, such as... Figure 1 The BCM shown.

[0111] In a possible implementation a1, the control device sends a first ranging request to the positioning device, which can be achieved by the control device receiving a first signal, including a door opening signal or a door locking signal, and then the control device responding to the first signal by sending a first ranging request to the positioning device.

[0112] In a possible implementation a2, the positioning device transmits a first wireless signal according to a first cycle or according to a first rule. The first cycle is, for example, 5 seconds, and the first rule is, for example, transmitting the first wireless signal once every 10 seconds. The specific value of the first cycle and the specific content of the first rule are not limited here.

[0113] After the positioning device sends the first wireless signal, at least one responding device receives the first wireless signal from the positioning device, and then at least one responding device performs step 202.

[0114] The response device may include any one of a car key, a smart terminal, or a seat with a wireless communication module.

[0115] Step 202: At least one responding device sends at least one response signal to the positioning device in response to the first wireless signal.

[0116] Wherein, at least one response signal is used to indicate one or more of the following (1) to (3):

[0117] (1) The time at which at least one responding device receives the first wireless signal;

[0118] (2) The time during which at least one responding device sends at least one response signal;

[0119] (3) At least one time interval between the time when at least one responding device receives the first wireless signal and the time when at least one response signal is sent.

[0120] For example, at least one response signal may carry any or more of the contents shown in (1) to (3) above. It should be understood that "time" in this application can be understood as a moment or the time difference between a reference time point, without specific limitation.

[0121] After step 202 above, the positioning device may receive at least one response signal from at least one responding device in response to the first wireless signal, and several possible examples are provided below.

[0122] In one example, when at least one responding device includes a car key, the positioning device receives a first wireless response signal from the car key.

[0123] In another example, when at least one responding device includes a target object, the positioning device receives a second wireless response signal from the target object. It should be noted that the target object involved in this application includes a smart terminal or a seat with a wireless communication module, which will not be elaborated further below.

[0124] In one possible implementation, the responding device is a seat with a wireless communication module, and the seat contains a pressure sensor or switch. In this case, when the pressure detected by the pressure sensor is greater than or equal to a pressure threshold or the switch is in the open state, the responding device receives a first wireless signal from the positioning device via the wireless communication module. Then, the responding device sends a response signal to the positioning device in response to the first wireless signal via the wireless communication module. Thus, when the positioning device receives the response signal from the wireless communication module in the seat in response to the first wireless signal, it can proceed to step 203.

[0125] In yet another example, when at least one responding device includes a car key and a target object, the positioning device receives a first wireless response signal from the car key and a second wireless response signal from the target object.

[0126] In other embodiments, the responding device may also be other devices with wireless communication modules besides car keys, smart terminals, and seats with wireless communication modules, which will not be listed here.

[0127] Step 203: The positioning device sends information corresponding to at least one response signal to the control device.

[0128] Among them, the information corresponding to at least one response signal can be used to indicate that the target object is located inside the vehicle.

[0129] For example, the first wireless signal in step 201 above can be a wireless ranging signal, and the information corresponding to at least one response signal can be first ranging information, which is used to indicate the distance from the positioning device to at least one response device. Two possible implementations are provided below to illustrate the first ranging information.

[0130] In a possible implementation b1, at least one response device includes a car key and a target object, first ranging information is used to indicate a first distance from the positioning device to the car key, and a second distance from the positioning device to the target object.

[0131] In a possible implementation b2, at least one response device includes a target object, and first ranging information is used to indicate a second distance from the positioning device to the target object.

[0132] Based on the above, the first ranging information includes one or more of the following (1) to (6):

[0133] (1) The time when the positioning device sends the first wireless signal;

[0134] (2) The time at which at least one responding device receives the first wireless signal;

[0135] (3) The time it takes for the positioning device to receive at least one response signal;

[0136] (4) The time during which at least one responding device sends at least one response signal;

[0137] (5) At least one time interval between the time when the positioning device sends the first wireless signal and the time when it receives at least one response signal;

[0138] (6) At least one time interval between the time when at least one responding device receives the first wireless signal and the time when at least one acknowledgment signal is sent.

[0139] In this embodiment of the application, the first distance from the positioning device to the car key and the second distance from the positioning device to the target object can be determined by the first ranging information including (1) to (6) above.

[0140] In one example, assuming the responding device is a car key, the first ranging information may include the time when the positioning device sends a first wireless signal, the time when the car key receives the first wireless signal, the time when the car key sends an acknowledgment signal, and the time when the positioning device receives the acknowledgment signal from the car key. The first ranging information may also include the time interval between the positioning device sending the first wireless signal and receiving the acknowledgment signal from the car key, and the time interval between the car key receiving the first wireless signal and sending the acknowledgment signal. In this case, the control device can save computational resources when calculating the distance between the positioning device and the car key. It should be understood that this example can also be applied to other responding devices.

[0141] It should be noted that in step 203, the control device can be an internal control device of the positioning device or an external control device of the positioning device, such as the vehicle's central controller.

[0142] After the positioning device sends information corresponding to at least one response signal to the control device, the control device can receive information corresponding to at least one response signal from the positioning device, and then the control device executes step 204.

[0143] Step 204: The control device outputs a reminder indication signal based on the information corresponding to at least one response signal. The reminder indication signal is used to instruct at least one output device to output a reminder signal.

[0144] When the information corresponding to at least one response signal is the first ranging information, the above step 204 can be replaced by: the control device outputs a reminder indication signal according to the first ranging information. Several possible implementation methods are provided below.

[0145] In possible implementation c1, based on possible implementation b1 described above, the first ranging information is used to indicate a first distance from the positioning device to the car key, and a second distance from the positioning device to the target object. The control device determines that the difference between the first distance and the second distance is greater than or equal to a first threshold, and outputs a reminder indication signal. It should be understood that here, a reminder indication signal is output when the difference is greater than or equal to the first threshold, and no indication signal is output when the difference is less than the first threshold. In some other embodiments, it can also be set to output a reminder indication signal when the difference is greater than the first threshold, and no indication signal is output when the difference is less than or equal to the first threshold. Based on a similar principle, the comparison between the second distance and the second threshold, and the comparison between the pressure and the pressure threshold, will not be described again in the following text.

[0146] like Figure 3The distance difference measurement diagram shown uses a positioning device as the positioning station, a smart terminal and a car key as the response devices, and a BCM as the control device. For example, at time t1, the driver is inside the car, and both the car key and the smart terminal are inside. The distances between the positioning station and the car key (D1(t1)) and between the positioning station and the smart terminal (D2(t1)) are less than a first threshold. However, at time t2, after the driver leaves the car, the car key is outside, but if the smart terminal is left inside, the distances between the positioning station and the car key (D1(t2)) and between the positioning station and the smart terminal (D2(t2)) are greater than the first threshold. Therefore, by determining the distances between the positioning station and the car key, and between the positioning station and the smart terminal, it is possible to determine whether a target object is left inside the car, and to provide timely alerts when such a target object is found inside.

[0147] The distance between the positioning station and the car key, as well as the distance between the positioning station and the smart terminal, can be determined based on the first ranging information.

[0148] For example, the first ranging information may include the time when the positioning station sends the first wireless signal, the time when the car key receives the first wireless signal, the time when the smart terminal receives the first wireless signal, the time when the car key sends the first wireless response signal, the time when the smart terminal sends the second wireless response signal, the time when the positioning station receives the first wireless response signal sent by the car key, and the time when the positioning station receives the second wireless response signal sent by the smart terminal.

[0149] After receiving the first ranging information, the BCM can determine the distance between the positioning station and the car key, as well as the distance between the positioning station and the smart terminal, based on the time in the first ranging information.

[0150] The following describes how to calculate the distance between the transmitter and receiver. For example... Figure 4 The ranging principle diagram shown first calculates the one-way flight time. The one-way flight time between the transmitter (e.g., a positioning station) and the receiver (e.g., a car key) can be calculated using the following formula (1):

[0151] T f =(T t -T r ) / 2(1)

[0152] Among them, T t T is the time interval between the time the transmitter sends the first wireless signal and the time the receiver receives the response signal. f T is the time interval between the time the transmitter sends the first wireless signal and the time the receiver receives the first wireless signal, or it can be the time interval between the time the receiver sends an acknowledgment signal and the time the transmitter receives the acknowledgment signal.r The time interval between the receiving end receiving the first wireless signal and the receiving end sending an acknowledgment signal.

[0153] After determining the one-way flight time, the distance D between the transmitter and receiver can be calculated using the following formula (2):

[0154] D = c * T f1 (2)

[0155] Where c is the electromagnetic wave propagation speed, T f The one-way flight time between the positioning station and the car key.

[0156] For example, based on the time when the positioning station sends the first wireless signal and the time when the positioning station receives the first wireless response signal sent by the car key, which are included in the first ranging information, the time interval T between the time when the positioning station sends the first wireless signal and the time when the positioning station receives the response signal sent by the car key is determined. t1 Based on the time when the car key receives the first wireless signal and the time when the car key sends the first response signal, the time interval T between the time when the car key receives the first wireless signal and the time when the car key sends the response signal is determined. r1 T t1 With T r1 Substituting these values ​​into the right side of equation (1) above, we can calculate T. f1 Then T f1 Substituting into the right side of formula (2), the distance D1 between the positioning station and the car key can be calculated.

[0157] Based on a similar principle, after receiving the first ranging information, the BCM can determine the time interval T between the time the positioning station sends the first wireless signal and the time the positioning station receives the first wireless response signal from the smart terminal, according to the time the positioning station sends the first wireless signal and the time the positioning station receives the first wireless response signal from the smart terminal included in the first ranging information. t2 Based on the time when the smart terminal receives the first wireless signal and the time when the smart terminal sends the first response signal, the time interval T between the time when the smart terminal receives the first wireless signal and the time when the smart terminal sends the response signal is determined. r2 Then T t2 With T r2 Substituting the values ​​into formula (1) above, the one-way flight time T between the positioning station and the smart terminal can be calculated. f2 Then T f2 Substituting into formula (2), the distance D2 between the positioning station and the smart terminal is calculated.

[0158] Then, the BCM determines whether the difference between distance D1 and distance D2 is greater than or equal to the first threshold. If the difference is greater than or equal to the first threshold, an alert indicator signal is output; if the difference is less than the first threshold, no alert indicator signal is output.

[0159] The above example demonstrates how to effectively detect when a smart device is left in a vehicle and provide timely alerts.

[0160] In the above example, if the responding device is a seat with a wireless communication module, the presence of a living being left in the vehicle can also be detected in the above manner. Specifically, the wireless communication module will only receive the first wireless signal from the positioning device and send a response signal to the first wireless signal when the seat with the wireless communication module detects pressure greater than or equal to a pressure threshold or when the switch of the wireless communication module is in the on state. That is, when a living being is on the seat, it can be detected by the relationship between the distance difference between the seat and the car key and the first threshold. When the living being leaves the seat, the seat detects pressure less than the pressure threshold or when the switch of the wireless communication module is in the off state. At this time, the wireless communication module will no longer receive the first wireless signal, nor will it send a response signal, and will no longer detect the target object. In this embodiment, the switch of the wireless communication module can be manually operated to turn on or off. In this case, the wireless communication module in the seat can be manually turned on after the living being sits on the seat, and manually turned off after the living being leaves the seat. The switch of the wireless communication module can also be turned on or off automatically, for example, the wireless communication module can be automatically triggered to turn on after a passenger enters the vehicle and sits down, or the wireless communication module can be automatically triggered to turn on when the car door is locked.

[0161] In the above embodiments, the distances of a smart terminal (or a seat with an embedded wireless communication module) placed in any position in the vehicle and the car key relative to the positioning station are measured using wireless signal ranging technology. The distance difference is compared with a first threshold to determine whether the smart terminal (or living being) is left in the vehicle.

[0162] In possible implementation c2, based on possible implementation b2 above, the first ranging information is used to indicate the second distance from the positioning device to the target object, the control device determines that the second distance is greater than or equal to the second threshold, and outputs a reminder indication signal.

[0163] like Figure 5 As shown, taking the positioning device as a car key and the response device as a smart terminal as an example, the first ranging information may include the time when the car key sends the first wireless signal, the time when the smart terminal receives the first wireless signal, the time when the smart terminal sends the second wireless response signal, and the time when the car key receives the second wireless response signal sent by the smart terminal.

[0164] Based on the above Figure 4 The distance measurement principle shown calculates the second distance between the car key and the smart terminal. When the second distance is greater than or equal to the second threshold, a reminder signal is output; when the second distance is less than the second threshold, no reminder signal is output.

[0165] In the above implementation, the distance between the smart terminal (or a seat with an embedded wireless communication module) and the car key is measured using wireless signal ranging technology. The distance between the transmitting and receiving ends is compared with a second threshold to determine whether the smart terminal (or a living being) has been left inside the vehicle, thus enabling mutual detection between the smart terminal (or the seat with the embedded wireless communication module) and the car key. This implementation can also be applied to non-in-vehicle scenarios, enabling mutual anti-loss alarms between the smart terminal and its associated car key.

[0166] In the above embodiments, the reminder signal output by at least one output device includes one or more of the following (1) to (5):

[0167] (1) The vehicle's audio system broadcasts voice reminders; for example, the BCM sends a signal to the CDC to control the audio system to broadcast voice messages.

[0168] (2) The vehicle’s ambient lighting flashes as a reminder; for example, the BCM sends a signal to the VIU to control the ambient lighting to flash.

[0169] (3) The vehicle's display screen shows a reminder message;

[0170] (4) The vehicle key makes a sound or vibrates; for example, the key buzzer makes a sound or the key vibrates.

[0171] (5) The target object outputs sound or vibration, such as mobile phone ringtone, mobile phone vibration, mobile phone screen display information, etc.

[0172] Based on the above embodiments and the same concept, this application also provides a communication device for performing the steps performed by the positioning device or response device in the above method embodiments. For related features, please refer to the above method embodiments, which will not be repeated here.

[0173] like Figure 6 As shown, the communication device 600 may include a transmitting unit 601 and a receiving unit 602.

[0174] When the communication device is used to perform the steps performed by the positioning device in the above method embodiment, the sending unit 601 is used to send a first wireless signal; the receiving unit 602 is used to receive at least one response signal from at least one responding device in response to the first wireless signal; the sending unit 601 is also used to send first ranging information corresponding to at least one response signal to the control device; wherein, the first ranging information is used to indicate the distance from the positioning device to at least one responding device.

[0175] In one possible implementation, at least one response device includes a car key and a target object; a receiving unit 602 is configured to receive a first wireless response signal from the car key; receive a second wireless response signal from the target object; and first ranging information is used to indicate a first distance from the positioning device to the car key, and a second distance from the positioning device to the target object.

[0176] In one possible implementation, the communication device 600 further includes a determining unit 603, which determines that the difference between the first distance and the second distance is greater than or equal to a first threshold, and outputs a reminder indication signal, which is used to instruct at least one output device to output a reminder signal.

[0177] In one possible implementation, at least one response device includes a target object; a receiving unit 602 is used for the positioning device to receive a second wireless response signal from the target object; and first ranging information is used to indicate a second distance from the positioning device to the target object.

[0178] In one possible implementation, the determining unit 603 is further configured to control the device to determine that the second distance is greater than or equal to the second threshold, and output a reminder indication signal, the reminder indication signal being used to instruct at least one output device to output a reminder signal.

[0179] In one possible implementation, the transmitting unit 601 is further configured to transmit a first wireless signal in response to a first ranging request; the first ranging request originates from a central controller.

[0180] In one possible implementation, the transmitting unit 601 is specifically used for the positioning device to transmit a first wireless signal according to a first cycle, or to transmit a first wireless signal according to a first rule.

[0181] In one possible implementation, the first ranging information includes one or more of the following:

[0182] The time when the positioning device sends the first wireless signal;

[0183] The time at which at least one responding device receives the first wireless signal;

[0184] The time it takes for the positioning device to receive at least one response signal;

[0185] The time at which at least one responding device sends at least one response signal;

[0186] At least one time interval between the time when the positioning device sends the first wireless signal and the time when it receives at least one response signal;

[0187] The time interval between the time when at least one responding device receives the first wireless signal and the time when at least one acknowledgment signal is sent.

[0188] In one possible implementation, at least one response signal is used to indicate one or more of the following:

[0189] The time at which at least one responding device receives the first wireless signal;

[0190] The time at which at least one responding device sends at least one response signal;

[0191] The time interval between the time at which at least one responding device receives the first wireless signal and the time at which at least one acknowledgment signal is sent.

[0192] In one possible implementation, the target object includes: a smart terminal, or a seat with a wireless communication module.

[0193] When the communication device is used to perform the steps performed by the response device in the above method embodiment, the receiving unit 602 is used to receive a first wireless signal from the positioning device; the sending unit 601 is used to send a response signal to the positioning device in response to the first wireless signal.

[0194] In one possible implementation, the communication device 600 includes any one of the following: a car key; a smart terminal; or a seat with a wireless communication module.

[0195] In one possible implementation, the communication device 600 is a seat with a wireless communication module, and the seat is equipped with a pressure sensor or switch;

[0196] The receiving unit 602 is used to receive a first wireless signal from the positioning device through the wireless communication module when the pressure detected by the pressure sensor is greater than or equal to the pressure threshold or the switch is in the open state.

[0197] The transmitting unit 601 is used to transmit a response signal to the positioning device in response to the first wireless signal via the wireless communication module.

[0198] Based on the above embodiments and the same concept, this application also provides a communication device for executing the steps performed by the control device in the above method embodiments. For related features, please refer to the above method embodiments, which will not be repeated here.

[0199] like Figure 7 As shown, the communication device 700 may include a receiving unit 701 and an output unit 702, and optionally, a transmitting unit 703.

[0200] The receiving unit 701 is configured to receive first ranging information from the positioning device, the first ranging information being used to indicate the distance from the positioning device to at least one responding device;

[0201] The output unit 702 is used to output a reminder indication signal based on the first ranging information. The reminder indication signal is used to instruct at least one output device to output a reminder signal.

[0202] In one possible implementation, at least one responding device includes a car key and a target object; first ranging information is used to indicate a first distance from the positioning device to the car key, and a second distance from the positioning device to the target object.

[0203] In one possible implementation, the output unit 702 is used to control the device to determine that the difference between the first distance and the second distance is greater than or equal to a first threshold, and output a reminder indication signal.

[0204] In one possible implementation, at least one responding device includes a target object; first ranging information is used to indicate a second distance from the positioning device to the target object.

[0205] In one possible implementation, the output unit 702 is used to determine that the second distance is greater than or equal to the second threshold and output a reminder indication signal.

[0206] In one possible implementation, the sending unit 703 is used to send a first ranging request to the positioning device.

[0207] In one possible implementation, the receiving unit 701 receives a first signal, which includes a door opening signal or a door locking signal; the sending unit 703 is used to send a first ranging request to the positioning device in response to the first signal.

[0208] In one possible implementation, the reminder signal output by at least one output device includes one or more of the following:

[0209] The vehicle's in-car audio system broadcasts voice reminders;

[0210] The vehicle's ambient lighting flashes as a reminder;

[0211] The vehicle's display screen shows a reminder message;

[0212] The vehicle key makes a sound or vibrates;

[0213] The target object outputs sound or vibration.

[0214] In one possible implementation, the first ranging information includes one or more of the following:

[0215] The timing of the positioning device sending the first wireless signal, the first wireless signal being used to trigger the response device that receives the first wireless signal to send a corresponding response signal;

[0216] The time at which at least one responding device receives the first wireless signal;

[0217] The time it takes for the positioning device to receive at least one response signal;

[0218] The time at which at least one responding device sends at least one response signal, wherein the at least one response signal is sent by the at least one responding device in response to the first wireless signal;

[0219] At least one time interval between the time when the positioning device sends the first wireless signal and the time when it receives at least one response signal;

[0220] The time interval between the time when at least one responding device receives the first wireless signal and the time when at least one acknowledgment signal is sent.

[0221] In one possible implementation, at least one response signal is used to indicate one or more of the following:

[0222] The time at which at least one responding device receives the first wireless signal;

[0223] The time at which at least one responding device sends at least one response signal;

[0224] The time interval between the time at which at least one responding device receives the first wireless signal and the time at which at least one acknowledgment signal is sent.

[0225] In one possible implementation, the target object includes: a smart terminal, or a seat with a wireless communication module.

[0226] According to the aforementioned method, Figure 8 This is a schematic diagram of the structure of the communication device provided in the embodiments of this application, such as... Figure 8 As shown, the communication device 800 can be the positioning device, control device, or response device in the above embodiments. The communication device 800 may include a memory 801, a processor 802, and a bus system, wherein the processor 802 and the memory 801 can be connected through the bus system.

[0227] It should be understood that the processor 802 described above can be a chip. For example, the processor 802 can be a field programmable gate array (FPGA), an application-specific integrated circuit (ASIC), a system-on-chip (SoC), a central processor unit (CPU), a network processor (NP), a digital signal processor (DSP), a microcontroller unit (MCU), a programmable logic device (PLD), or other integrated chips.

[0228] In implementation, each step of the above method can be completed by the integrated logic circuitry of the hardware in the processor 802 or by instructions in software form. The steps of the method disclosed in the embodiments of this application can be directly implemented by the hardware processor, or by a combination of hardware and software modules in the processor 802. The software modules can reside in random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, or other mature storage media in the art. This storage medium is located in memory 801, and the processor 802 reads the information in memory 801 and, in conjunction with its hardware, completes the steps of the above method.

[0229] It should be noted that the processor 802 in this application embodiment can be an integrated circuit chip with signal processing capabilities. During implementation, each step of the above method embodiment can be completed by the integrated logic circuitry in the processor's hardware or by instructions in software form. The processor can be a general-purpose processor, digital signal processor (DSP), application-specific integrated circuit (ASIC), field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. It can implement or execute the methods, steps, and logic block diagrams disclosed in this application embodiment. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the methods disclosed in this application embodiment can be directly embodied as execution by a hardware decoding processor, or as execution by a combination of hardware and software modules in the decoding processor. The software modules can be located in random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, or other mature storage media in the art. This storage medium is located in memory; the processor reads information from the memory and, in conjunction with its hardware, completes the steps of the above method.

[0230] It is understood that the memory 801 in the embodiments of this application can be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. The non-volatile memory can be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. The volatile memory can be random access memory (RAM), which is used as an external cache. By way of example, but not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous linked dynamic random access memory (SLDRAM), and direct rambus RAM (DR RAM). It should be noted that the memory used in the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0231] This application also provides a vehicle that may include the communication device described above. In one example, the vehicle may be the vehicle described in this application.

[0232] Based on the above embodiments and the same concept, this application also provides a communication system, which includes a positioning device and a control device located in a vehicle, wherein the positioning device is used to perform the steps performed by the positioning device in the above method embodiments, and the control device is used to perform the steps performed by the control device in the above method embodiments.

[0233] The positioning device is configured to: transmit a first wireless signal; receive at least one response signal from at least one responding device in response to the first wireless signal; and transmit first ranging information corresponding to the at least one response signal to a control device, the first ranging information being used to indicate the distance from the positioning device to the at least one responding device.

[0234] A control device is configured to: receive first ranging information from a positioning device; and output a reminder indication signal based on the first ranging information, wherein the reminder indication signal is used to instruct at least one output device to output a reminder signal.

[0235] In one possible design, at least one response device includes a car key and a target object; a positioning device specifically configured to: receive a first wireless response signal from the car key; receive a second wireless response signal from the target object; and first ranging information is used to indicate a first distance from the positioning device to the car key, and a second distance from the positioning device to the target object.

[0236] In one possible design, the control device is specifically used to: determine that the difference between the first distance and the second distance is greater than or equal to a first threshold, and output an alert indication signal.

[0237] In one possible design, at least one response device includes a target object; first ranging information is used to indicate a second distance from the positioning device to the target object; the positioning device is specifically used to: receive a second wireless response signal from the target object; the first ranging information is used to indicate the second distance from the positioning device to the target object.

[0238] In one possible design, the control device is specifically used to: determine that the second distance is greater than or equal to the second threshold, and output an alert indication signal.

[0239] In one possible design, the control device is further configured to: send a first ranging request to the positioning device; the positioning device is specifically configured to: send a first wireless signal in response to the first ranging request.

[0240] In one possible design, the control device is specifically configured to: receive a first signal, the first signal including a door opening signal or a door locking signal; and in response to the first signal, send a first ranging request to the positioning device.

[0241] In one possible design, the positioning device is specifically used to: transmit a first wireless signal according to a first cycle, or transmit a first wireless signal according to a first rule.

[0242] In one possible design, the first ranging information includes one or more of the following: the time when the positioning device transmits the first wireless signal; the time when at least one responding device receives the first wireless signal;

[0243] The time when the positioning device receives at least one response signal; the time when at least one responding device sends at least one response signal; at least one time interval between the time when the positioning device sends a first wireless signal and the time when it receives at least one response signal; at least one time interval between the time when the at least one responding device receives the first wireless signal and the time when it sends at least one response signal.

[0244] In one possible design, at least one response signal is used to indicate one or more of the following:

[0245] The time at which at least one responding device receives the first wireless signal;

[0246] The time at which at least one responding device sends at least one response signal;

[0247] The time interval between the time at which at least one responding device receives the first wireless signal and the time at which at least one acknowledgment signal is sent.

[0248] In one possible design, the target object includes: a smart terminal, or a seat with a wireless communication module.

[0249] In one possible design, the communication system also includes a seat with a wireless communication module, wherein a pressure sensor or switch is provided in the seat; the seat with the wireless communication module is specifically used to: receive a first wireless signal from the positioning device through the wireless communication module when the pressure detected by the pressure sensor is greater than or equal to a pressure threshold or the switch is in the open state; and send a response signal to the positioning device in response to the first wireless signal through the wireless communication module.

[0250] According to the method provided in the embodiments of this application, this application also provides a computer program product, which includes: computer program code or instructions, which, when the computer program code or instructions are run on a computer, cause the computer to perform the method of any one of the above method embodiments.

[0251] According to the method provided in the embodiments of this application, this application also provides a computer-readable storage medium storing program code, which, when run on a computer, causes the computer to perform the method of any one of the above method embodiments.

[0252] The above embodiments can be implemented, in whole or in part, by software, hardware, firmware, or any other combination thereof. When implemented using software, the above embodiments can be implemented, in whole or in part, as a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded or executed on a computer, all or part of the processes or functions described in the embodiments of this application are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more sets of available media. The available medium can be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium. A semiconductor medium can be a solid-state drive (SSD).

[0253] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0254] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0255] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the technical objectives of this application, depending on actual needs.

[0256] The above description is merely a specific embodiment of this application. Any variations or substitutions conceived by those skilled in the art based on the specific embodiments provided in this application should be covered within the protection scope of this application.

Claims

1. A communication method, characterized in that, The method includes: The positioning device sends a first wireless signal, which triggers a response device that receives the first wireless signal to send a corresponding response signal. The positioning device is used for wireless ranging or positioning. The positioning device receives at least one response signal from at least one responding device in response to the first wireless signal; The positioning device sends first ranging information corresponding to the at least one response signal to the control device; Wherein, the first ranging information corresponding to the at least one response signal is used to indicate that the target object is located inside the vehicle, and the first ranging information corresponding to the at least one response signal is used to trigger the control device to output a reminder indication signal, the reminder indication signal is used to instruct at least one output device to output a reminder signal, and the reminder signal is used to remind the user that the target object is left inside the vehicle; The first ranging information includes one or more of the following: The time when the positioning device sends the first wireless signal; The time at which the at least one responding device receives the first wireless signal; The time at which the positioning device receives the at least one response signal; The time at which the at least one responding device sends the at least one response signal; The positioning device transmits the first wireless signal at least once between the time of receiving the at least one response signal; The time interval between the time when the at least one responding device receives the first wireless signal and the time when it sends the at least one response signal.

2. The method as described in claim 1, characterized in that, The at least one response device includes a car key and a target object; The positioning device receives at least one response signal from at least one responding device in response to the first wireless signal, including: The positioning device receives a first wireless response signal from the car key; The positioning device receives a second wireless response signal from the target object; The first distance measurement information is used to indicate a first distance from the positioning device to the car key, and a second distance from the positioning device to the target object.

3. The method as described in claim 2, characterized in that, The method further includes: The control device determines that the difference between the first distance and the second distance is greater than or equal to a first threshold, and outputs a reminder indication signal, which is used to instruct at least one output device to output a reminder signal.

4. The method as described in claim 1, characterized in that, The at least one response device includes a target object; The positioning device receives at least one response signal from at least one responding device in response to the first wireless signal, including: The positioning device receives a second wireless response signal from the target object; The first ranging information is used to indicate the second distance from the positioning device to the target object.

5. The method as described in claim 4, characterized in that, The method further includes: The control device determines that the second distance is greater than or equal to the second threshold and outputs a reminder indication signal, which is used to instruct at least one output device to output a reminder signal.

6. The method according to any one of claims 1-5, characterized in that, The positioning device transmits a first wireless signal, including: The positioning device responds to the first ranging request by sending the first wireless signal; The first ranging request comes from the central controller.

7. The method according to any one of claims 1-5, characterized in that, The positioning device transmits a first wireless signal, including: The positioning device transmits the first wireless signal according to a first cycle or according to a first rule.

8. The method according to any one of claims 1-7, characterized in that, The at least one response signal is used to indicate one or more of the following: The time at which the at least one responding device receives the first wireless signal; The time at which the at least one responding device sends the at least one response signal; The time interval between the time when the at least one responding device receives the first wireless signal and the time when it sends the at least one response signal.

9. The method according to any one of claims 2-8, characterized in that, The target object includes: a smart terminal, or a seat with a wireless communication module.

10. A communication method, characterized in that, The method includes: The control device receives first ranging information from the positioning device. The first ranging information is used to indicate that the target object is located inside the vehicle. The first ranging information is used to trigger the control device to output an alert indication signal. The positioning device is used for wireless ranging or positioning. The control device outputs the reminder indication signal based on the first ranging information. The reminder indication signal is used to instruct at least one output device to output a reminder signal, which is used to remind the user that the target object is left in the vehicle. The first ranging information includes one or more of the following: The timing of the positioning device sending the first wireless signal, wherein the first wireless signal is used to trigger the response device that receives the first wireless signal to send a corresponding response signal; The time at which at least one responding device receives the first wireless signal; The positioning device receives at least one response signal at a time when the at least one response signal is sent by the at least one responding device in response to the first wireless signal; The time at which the at least one responding device sends the at least one response signal; The positioning device transmits the first wireless signal at least once between the time of receiving the at least one response signal; The time interval between the time when the at least one responding device receives the first wireless signal and the time when it sends the at least one response signal.

11. The method as described in claim 10, characterized in that, The at least one response device includes a car key and a target object; the first ranging information is used to indicate a first distance from the positioning device to the car key, and a second distance from the positioning device to the target object.

12. The method as described in claim 11, characterized in that, The control device outputs a reminder signal based on the first ranging information, including: The control device determines that the difference between the first distance and the second distance is greater than or equal to a first threshold, and outputs the reminder indication signal.

13. The method as described in claim 10, characterized in that, The at least one response device includes a target object; the first ranging information is used to indicate a second distance from the positioning device to the target object.

14. The method as described in claim 13, characterized in that, The control device outputs a reminder signal based on the first ranging information, including: The control device determines that the second distance is greater than or equal to the second threshold and outputs the reminder indication signal.

15. The method according to any one of claims 10-14, characterized in that, Before the control device receives the first ranging information from the positioning device, it also includes: The control device sends a first ranging request to the positioning device.

16. The method as described in claim 15, characterized in that, The control device sends a first ranging request to the positioning device, including: The control device receives a first signal, which includes a door opening signal or a door locking signal; In response to the first signal, the control device sends the first ranging request to the positioning device.

17. The method according to any one of claims 10-16, characterized in that, The reminder signal output by the at least one output device includes one or more of the following: The vehicle's in-car audio system broadcasts voice reminders; The vehicle's ambient lighting flashes as a reminder; The vehicle's display screen shows a reminder message; The vehicle key makes a sound or vibrates; The target object outputs sound or vibration.

18. The method according to any one of claims 10-17, characterized in that, The at least one response signal is used to indicate one or more of the following: The time at which the at least one responding device receives the first wireless signal; The time at which the at least one responding device sends at least one response signal; The time interval between the time when the at least one responding device receives the first wireless signal and the time when it sends the at least one response signal.

19. The method according to any one of claims 10-18, characterized in that, The target object includes: a smart terminal, or a seat with a wireless communication module.

20. A communication device, characterized in that, The device includes a processor and a communication interface, wherein the communication interface is used to receive signals from other communication devices besides the aforementioned communication device and transmit them to the processor, or to send signals from the processor to other communication devices besides the aforementioned communication device; the processor is used to implement the method as described in any one of claims 1 to 9, or to implement the method as described in any one of claims 10 to 19, through logic circuits or executing code instructions.

21. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program that, when executed, implements the method as described in any one of claims 1 to 9, or the method as described in any one of claims 10 to 19.

22. A communication system, characterized in that, Includes positioning devices and control devices; The positioning device is used to implement the method as described in any one of claims 1 to 9 above; The control device is used to implement the method as described in any one of claims 10 to 19.

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