CN111754739A - Vehicle-mounted mobile phone forgetting warning system based on sound wave detection - Google Patents
Vehicle-mounted mobile phone forgetting warning system based on sound wave detection Download PDFInfo
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- CN111754739A CN111754739A CN202010516404.1A CN202010516404A CN111754739A CN 111754739 A CN111754739 A CN 111754739A CN 202010516404 A CN202010516404 A CN 202010516404A CN 111754739 A CN111754739 A CN 111754739A
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
- G08B21/24—Reminder alarms, e.g. anti-loss alarms
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B7/00—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00
- G08B7/06—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00 using electric transmission, e.g. involving audible and visible signalling through the use of sound and light sources
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Abstract
The invention discloses a vehicle-mounted mobile phone forgetting warning system based on sound wave detection, which comprises a sound wave acquisition unit, a video acquisition unit, a distance acquisition unit, a main control unit, a warning unit and a power supply unit, wherein the sound wave acquisition unit is used for acquiring a sound wave signal; the main control unit is connected with the sound wave acquisition unit, the video acquisition unit, the distance acquisition unit and the alarm unit; the power supply unit is connected with the sound wave acquisition unit, the video acquisition unit, the distance acquisition unit, the main control unit and the alarm unit; the vehicle-mounted mobile phone fixing device carries out comprehensive judgment on the sound signal, the video signal and the distance signal, and carries out sound-light alarm to remind a driver to take away the mobile phone when the vehicle is in a flameout state, the driver leaves a driving position and the mobile phone is forgotten to be in the vehicle-mounted mobile phone fixing device; meanwhile, the mobile phone forgetting alarm system is an independent system, does not depend on the electronic circuit signals of the vehicle, does not need to modify and connect the signals and the wiring in the vehicle, is suitable for vehicles of any type and mobile phone fixing devices, and is easy to popularize and use in a large scale.
Description
Technical Field
The invention relates to the field of intelligent vehicle-mounted equipment, in particular to a vehicle-mounted mobile phone forgetting warning system based on sound wave detection.
Background
With the continuous development of science and technology, economic development and living standard improvement, mobile phones are more and more popularized in work and life of people, and the vehicle holding amount is steadily increased. Research reports show that the number of Chinese smart phone users reaches 13 hundred million in 2018. According to statistical data issued by the traffic administration of the ministry of public security, the national motor vehicle quantity of 2018 reaches 3.27 hundred million, and the vehicle drivers reach 3.69 hundred million. Often, a vehicle driver places a mobile phone on a mobile phone fixing device in a vehicle for GPS navigation, music playing, voice communication, and the like. When a driver of a vehicle leaves a parking lot after locking a vehicle door and returns to a work place or a rest place, the situation that a mobile phone is left in the vehicle is sometimes discovered. Since the parking lot is usually far away from the workplace or the rest place, on one hand, the mobile phone forgotten in the vehicle is taken back from the workplace or the rest place to the parking lot, and a large amount of precious time is wasted in the midway; on the other hand, the mobile phone cannot be carried in time, so that a lot of important timely information is missed, and unnecessary loss is caused.
The mobile phone forgetting alarm system aims to solve the problem that a driver of a vehicle forgets a mobile phone in the vehicle, so that the driver can receive a prompt when the driver is about to lock the vehicle door or the locked vehicle door is not far away from the vehicle, and the mobile phone on the mobile phone fixing device is taken down and carried with the driver in time. For example, a class of mobile phone forgetting warning systems acquire an ACC level signal and a door lock signal of a vehicle through wired or wireless transmission, or acquire an on-off signal of a power supply through a vehicle-mounted power plug connected with a wire, thereby assisting in realizing a reminding function. The other type of mobile phone forgetting alarm system transmits the electronic circuit signal of the vehicle to the forgetting alarm system through physical connection or wireless connection with the electronic circuit of the vehicle to judge whether the vehicle is flamed out and whether the vehicle door is locked, and the mobile phone forgetting alarm system cannot independently exist outside the electronic circuit signal of the vehicle.
In order to realize the warning of forgetting of the mobile phone, a vehicle central control system of an electronic circuit signal provided by a vehicle manufacturer needs to be designed, or a signal routing in a vehicle needs to be modified, or a unique circuit interface of a cigarette lighter needs to be occupied. Therefore, most of the current mobile phone forgetting alarm systems are low in applicability.
The mobile phone forgetting alarm system is independent of an electronic circuit signal of a vehicle, improves the applicability of the mobile phone forgetting alarm system, and is a technical problem to be solved urgently at present.
Disclosure of Invention
The invention aims to provide a vehicle-mounted mobile phone forgetting warning system based on sound wave detection, which is used for solving the problems in the prior art, so that the vehicle-mounted mobile phone forgetting warning system does not depend on the electronic circuit signal of a vehicle, and can receive an acousto-optic warning prompt when a driver just leaves a driving position, thereby taking down and carrying a mobile phone on a mobile phone fixing device in time.
In order to achieve the purpose, the invention provides the following technical scheme: the invention provides a vehicle-mounted mobile phone forgetting warning system based on sound wave detection, which comprises a sound wave acquisition unit, a video acquisition unit, a distance acquisition unit, a main control unit, a warning unit and a power supply unit, wherein the sound wave acquisition unit is used for acquiring a sound wave; the main control unit is connected with the sound wave acquisition unit, the video acquisition unit, the distance acquisition unit and the alarm unit; the power supply unit is connected with the sound wave acquisition unit, the video acquisition unit, the distance acquisition unit, the main control unit and the alarm unit;
the sound wave acquisition unit is used for acquiring sound signals generated by vibration of an engine in a vehicle during starting and running of the vehicle;
the video acquisition unit is used for acquiring real-time video signals of a driving position in the vehicle;
the distance acquisition unit is used for acquiring distance signals between the mobile phone and the mobile phone fixing device;
the main control unit processes data collected by the sound wave collecting unit, the video collecting unit and the distance collecting unit, when a sound signal collected by the sound wave collecting unit detects that a vehicle is changed from starting to a flameout state, a video signal collected by the video collecting unit detects that a driver leaves a driving position of the vehicle, and a distance signal collected by the distance collecting unit detects that the mobile phone is positioned on the mobile phone fixing device, the driver is judged to be driven, the mobile phone is not taken away from the mobile phone fixing device, and the main control unit controls the alarm unit to alarm;
the warning unit is used for sending warning information to remind a driver of taking the mobile phone away from the vehicle-mounted mobile phone fixing device when the driver leaves the vehicle;
the power supply unit is used for supplying power for the sound wave acquisition unit, the video acquisition unit, the distance acquisition unit, the main control unit and the alarm unit.
Preferably, the sound wave collection unit is composed of four micro microphone arrays, collected sound signals are transmitted to the main control unit, the main control unit identifies the received sound signals, and the starting or flameout state of the vehicle is judged through the characteristics of the sound signals when the vehicle starts and the sound signals after the vehicle is flameout.
Preferably, the video acquisition unit is a miniature camera module, transmits the acquired in-vehicle video signals to the main control unit, and the main control unit identifies the received video signals and judges whether the driver leaves the driving position or not through personnel change on the driving position in the video signals.
Preferably, the distance acquisition unit is a proximity sensor and transmits the acquired distance signal to the main control unit, and the main control unit compares the received distance signal with a preset threshold value and judges whether the mobile phone is placed on the mobile phone fixing device; when the distance between the mobile phone and the mobile phone fixing device is smaller than or equal to a preset threshold value, the mobile phone is judged to be left on the mobile phone fixing device, otherwise, the mobile phone is judged to be taken away from the mobile phone fixing device.
Preferably, the alarm unit comprises a loudspeaker and an LED alarm lamp and consists of an LM386 audio amplifier circuit system.
Preferably, the power supply unit comprises a rechargeable battery, an electric quantity display screen and a charging connector, and the charging connector can be connected with a vehicle-mounted power supply or a household power supply; the electric quantity display screen is used for displaying the electric quantity of the rechargeable battery.
The invention discloses the following technical effects: the invention carries out signal acquisition through the sound wave acquisition unit, the video acquisition unit and the distance acquisition unit, judges whether a vehicle is in a flameout state from starting, whether a driver leaves a driving position of the vehicle or not, whether a mobile phone is forgotten on the mobile phone fixing device or not, and carries out sound and light alarm in time under the condition that the mobile phone is forgotten on the mobile phone fixing device so as to remind the driver to take the mobile phone away from the vehicle-mounted mobile phone fixing device when the driver leaves the driving position. Meanwhile, the mobile phone forgetting warning system is an independent device, does not depend on the electronic circuit signals of the vehicle, does not need to modify or connect the electronic circuit signals or the wiring in the vehicle, is suitable for vehicles of any type and mobile phone fixing devices of any type, has strong applicability, and is easy to popularize and use on a large scale.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
FIG. 1 is a block diagram of the system of the present invention;
FIG. 2 is a schematic circuit diagram according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a power supply unit according to an embodiment of the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Referring to fig. 1, the embodiment provides a vehicle-mounted mobile phone forgetting warning system based on sound wave detection, which includes a sound wave acquisition unit, a video acquisition unit, a distance acquisition unit, a main control unit, a warning unit and a power supply unit; the main control unit is connected with the sound wave acquisition unit, the video acquisition unit, the distance acquisition unit and the alarm unit; the power supply unit is connected with the sound wave acquisition unit, the video acquisition unit, the distance acquisition unit, the main control unit and the alarm unit.
The circuit structure of the present embodiment is schematically shown in fig. 2:
in the present embodiment, the sound wave collecting unit adopts four MEMS digital microphone arrays with model number INMP441 and its auxiliary circuits, as shown in fig. 2, the sound wave collecting unit has 6 pins in total, wherein the SCK pin functions as a serial data clock of I2S interface for connecting with the PA11 pin in the main control unit, and the WS pin functions as a serial data word selection of I2S interface for connecting with the PA12 pin in the main control unit.
In the sound wave collecting unit, the MEMS digital microphone arrays of the four INMP441 and the auxiliary circuits thereof are used for collecting sound signals generated by vibration of an engine in a vehicle during starting and driving of the vehicle and transmitting the collected sound signals to the main control unit, the main control unit identifies the received sound signals, and the starting or flameout state of the vehicle is judged according to the characteristics of the sound signals when the vehicle is started and the sound signals after the vehicle is flameout.
The video acquisition unit of the embodiment adopts an HDF7725-A miniature camera module with an OV7725 chip, and the module has infrared capability of sensing light with a wavelength of 850-940 nanometers and night vision functions and can meet the requirements of video imaging in the daytime and at night. As shown in fig. 2, the video capture unit has 24 pins, wherein the SIO _ D pin functions as a serial interface data output for connecting with the PE3 pin in the main control unit; the SIO _ C pin is used as a serial clock interface input and is connected with a PE2 pin in the main control unit; the RESET pin has the function of resetting and is not butted with the main control unit; the PWDN pin is used for selecting a sleep mode and is connected with a PE5 pin in the main control unit, and meanwhile, the other ends of the SIO _ D pin, the SIO _ C pin, the RESET pin and the PWDN pin are respectively connected with a resistor of 10k omega in series and then are grounded together. The VSYNC pin has the function of frame synchronization and is used for connecting a PB7 pin in the main control unit; the PCKL pin is represented as a pixel clock and is used for connecting a PA6 pin in the main control unit; the XCKL1 pin functions as a clock input for connection to the PA8 pin in the host control unit. Meanwhile, pins Y2-Y9 are respectively used for representing module data output bits 0-7 (0, 1, 2, 3, 4, 5, 6 and 7), and the pin Y2 is used for connecting a pin PE9 in the main control unit; the Y3 pin is used to connect to PE10 pin in the host control unit; the Y4 pin is used to connect to PE11 pin in the host control unit; the Y5 pin is used to connect to PE12 pin in the host control unit; the Y6 pin is used to connect to PE13 pin in the host control unit; the Y7 pin is used to connect to PE14 pin in the host control unit; the Y8 pin is used to connect to PE8 pin in the host control unit; the Y9 pin is used to connect to the PE15 pin in the host control unit.
In the video acquisition unit, an HDF7725-A micro camera module of an OV7725 chip is used for acquiring real-time video signals of a driving position in a vehicle and transmitting the acquired video signals to a main control unit, the main control unit identifies the received video signals, and whether a driver leaves the driving position or not is judged through personnel change on the driving position in the video signals.
The distance acquisition unit of the embodiment adopts a proximity sensor with the model number of APM-12D23-20-DF8/TR8, and the proximity sensor is usually used in a smart phone to judge whether a screen is close to a human face. As shown in fig. 2, the distance acquisition unit has 8 pins, wherein the SDA pin functions as an I2S serial data bus for connecting to a PC3 pin in the host control unit; the INT pin belongs to an interrupt pin, has the function of open circuit and is connected with a PC4 pin in the main control unit; the SCL pin functions as an I2S serial clock bus, connecting to the PC5 pin in the host control unit. Meanwhile, the SDA pin, the INT pin and the SCL pin are respectively connected with 10k omega resistors R3, R2 and R1 in series and then are grounded together.
In the distance acquisition unit, an APM-12D23-20-DF8/TR8 proximity sensor is used for acquiring a distance signal between the mobile phone and the mobile phone fixing device in real time and transmitting the acquired distance signal to a main control unit, and the main control unit compares the received distance signal with a preset threshold value and judges whether the mobile phone is placed on the mobile phone fixing device; and if not, determining that the mobile phone is taken away from the mobile phone fixing device.
In this embodiment, the main control unit includes a main control chip STM32F407VGT6 single chip and an FIFO memory of AL422B, as shown in fig. 2, the main control unit includes 100 pins, wherein 20 pins are used for interfacing with an external sound wave acquisition unit, a video acquisition unit, a distance acquisition unit and an alarm unit, and are respectively a PA1 pin, a PA6 pin, a PA8 pin, a PA11 pin, a PA12 pin, a PB7 pin, a PC3 pin, a PC4 pin, a PC5 pin, a PE2 pin, a PE3 pin, a PE5 pin, a PE8 pin, a PE9 pin, a PE10 pin, a PE11 pin, a PE12 pin, a PE13 pin, a PE14 pin, and a PE15 pin, and the 20 pins all have an event output function and can be respectively interfaced with another four units.
After the main control unit is powered on, firstly configuring a video acquisition unit, and then processing and identifying data which are cached in FIFO and acquired by the video acquisition unit and data which are acquired by the sound wave acquisition unit and the distance acquisition unit to judge whether a driver finishes driving and does not take away a mobile phone from a mobile phone fixing device; when the sound signal collected by the sound wave collecting unit detects that the vehicle is changed into a flameout state from starting, the video signal collected by the video collecting unit detects that the driver leaves the driving position of the vehicle, and the distance signal collected by the distance collecting unit detects that the mobile phone is positioned on the mobile phone fixing device, the situation that the driver finishes driving is judged, the mobile phone is not taken away from the mobile phone fixing device, and the main control unit controls the alarm unit to give an alarm.
The alarm unit of the embodiment comprises a loudspeaker and an LED alarm lamp, and is composed of an LM386 audio amplifier circuit system and used for performing acousto-optic alarm. As shown in FIG. 2, the alarm unit is used for the output of the main control unit, and after the pin 109 of the positive electrode in the alarm unit is connected with the rheostat of 10k Ω, one end is connected with the pin PA1 in the main control unit, and the other end is grounded. The loudspeaker emits sound of 'please carry the mobile phone with the driver' and the LED warning lamp continuously flickers to remind the driver to take the mobile phone away from the vehicle-mounted mobile phone fixing device when the driver leaves the vehicle.
The schematic structural diagram of the power supply unit of this embodiment is shown in fig. 3:
the power supply unit of the embodiment adopts a power management circuit which takes a battery charging chip with a model of GC7120A as an important component and comprises a rechargeable battery, an electric quantity display screen and a charging connecting port. As shown in fig. 3, a charging power source in the power supply unit may be used to sequentially connect VCC pins in the sound wave acquisition unit, the video acquisition unit, the distance acquisition unit, the main control unit, and the alarm unit, and is used to supply power to the sound wave acquisition unit, the video acquisition unit, the distance acquisition unit, the main control unit, and the alarm unit; the charging connector can be connected with a vehicle-mounted power supply or a household power supply; the electric quantity display screen is used for displaying the electric quantity of the rechargeable battery.
The warning method of the mobile phone forgetting warning system for the vehicle-mounted mobile phone fixing device comprises the following steps:
the mobile phone forgetting warning system is fixed on the vehicle-mounted mobile phone fixing device, before a vehicle runs, a driver places the mobile phone on the vehicle-mounted mobile phone fixing device, and the sound wave acquisition unit, the video acquisition unit and the distance acquisition unit respectively acquire a sound signal in the vehicle, a video signal of a driving position and a distance between the mobile phone and the vehicle-mounted mobile phone fixing device in real time and transmit the acquired signals to the main control unit; the main control unit processes and identifies data collected by the sound wave collecting unit, the video collecting unit and the distance collecting unit in real time, judges the starting or flameout state of a vehicle through sound signals collected by the sound wave collecting unit, judges personnel change on a driving position through video signals of the driving position collected by the video collecting unit, and judges whether the mobile phone is placed on the vehicle-mounted mobile phone fixing device or not through the distance between the mobile phone and the mobile phone fixing device collected by the distance collecting unit. When the sound signal collected by the sound wave collecting unit judges that the engine is changed from the starting state to the flameout state, the signal collected by the video collecting unit judges that the driver leaves the driving position, and the signal collected by the distance collecting unit judges that the mobile phone is still placed on the vehicle-mounted mobile phone fixing device, the main control unit controls the alarm unit to give an alarm, the loudspeaker gives out sound of 'please carry the mobile phone with him', and the LED alarm lamp continuously flickers to remind the driver that the mobile phone is forgotten in the vehicle until the proximity sensor detects that the mobile phone leaves the vehicle-mounted mobile phone fixing device, namely when the driver takes the mobile phone away, the alarm unit stops giving an alarm.
The invention carries out signal acquisition through the sound wave acquisition unit, the video acquisition unit and the distance acquisition unit, judges whether a vehicle is changed into a flameout state from starting, whether a driver leaves a driving position of the vehicle or not, and whether the mobile phone is forgotten on the mobile phone fixing device, and carries out sound-light alarm when judging that the vehicle is in the flameout state, the driver leaves the driving position and the mobile phone is forgotten on the vehicle-mounted mobile phone fixing device, so as to remind the driver to take the mobile phone away from the vehicle-mounted mobile phone fixing device when leaving the driving position. Meanwhile, the mobile phone forgetting warning system is an independent device, does not depend on the electronic circuit signals of the vehicle, does not need to modify or connect the electronic circuit signals or the wiring in the vehicle, is suitable for vehicles of any type and mobile phone fixing devices of any type, has strong applicability, and is easy to popularize and use on a large scale.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention, and do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
The above-described embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention can be made by those skilled in the art without departing from the spirit of the present invention, and the technical solutions of the present invention are within the scope of the present invention defined by the claims.
Claims (6)
1. A vehicle-mounted mobile phone forgetting warning system based on sound wave detection is characterized by comprising a sound wave acquisition unit, a video acquisition unit, a distance acquisition unit, a main control unit, a warning unit and a power supply unit; the main control unit is connected with the sound wave acquisition unit, the video acquisition unit, the distance acquisition unit and the alarm unit; the power supply unit is connected with the sound wave acquisition unit, the video acquisition unit, the distance acquisition unit, the main control unit and the alarm unit;
the sound wave acquisition unit is used for acquiring sound signals generated by vibration of an engine in a vehicle during starting and running of the vehicle;
the video acquisition unit is used for acquiring real-time video signals of a driving position in the vehicle;
the distance acquisition unit is used for acquiring distance signals between the mobile phone and the mobile phone fixing device;
the main control unit processes data collected by the sound wave collecting unit, the video collecting unit and the distance collecting unit, when a sound signal collected by the sound wave collecting unit detects that a vehicle is changed from starting to a flameout state, a video signal collected by the video collecting unit detects that a driver leaves a driving position of the vehicle, and a distance signal collected by the distance collecting unit detects that the mobile phone is positioned on the mobile phone fixing device, the driver is judged to be driven, the mobile phone is not taken away from the mobile phone fixing device, and the main control unit controls the alarm unit to alarm;
the warning unit is used for sending warning information to remind a driver of taking the mobile phone away from the vehicle-mounted mobile phone fixing device when the driver leaves the vehicle;
the power supply unit is used for supplying power for the sound wave acquisition unit, the video acquisition unit, the distance acquisition unit, the main control unit and the alarm unit.
2. The vehicle-mounted mobile phone forgetting warning system based on sound wave detection as claimed in claim 1, wherein the sound wave collection unit is composed of four micro microphone arrays, collected sound signals are transmitted to the main control unit, the main control unit identifies the received sound signals, and the starting or flameout state of the vehicle is judged according to the characteristics of the sound signals when the vehicle starts and the sound signals after the vehicle is flameout.
3. The vehicle-mounted mobile phone forgetting warning system based on sound wave detection as claimed in claim 1, wherein the video acquisition unit is a micro camera module, transmits acquired in-vehicle video signals to the main control unit, the main control unit identifies the received video signals, and judges whether the driver leaves the driving position or not through personnel change on the driving position in the video signals.
4. The vehicle-mounted mobile phone forgetting warning system based on sound wave detection as claimed in claim 1, wherein the distance acquisition unit is a proximity sensor, transmits the acquired distance signal to the main control unit, and the main control unit compares the received distance signal with a preset threshold value to judge whether the mobile phone is placed on the mobile phone fixing device; when the distance between the mobile phone and the mobile phone fixing device is smaller than or equal to a preset threshold value, the mobile phone is judged to be left on the mobile phone fixing device, otherwise, the mobile phone is judged to be taken away from the mobile phone fixing device.
5. The vehicle-mounted mobile phone forgetting warning system based on sound wave detection as claimed in claim 1, wherein the warning unit comprises a loudspeaker and an LED warning lamp, and is composed of an LM386 audio amplifier circuit system.
6. The vehicle-mounted mobile phone forgetting warning system based on sound wave detection as claimed in claim 1, wherein the power supply unit comprises a rechargeable battery, a power display screen and a charging connector, and the charging connector can be connected with a vehicle-mounted power supply or a household power supply; the electric quantity display screen is used for displaying the electric quantity of the rechargeable battery.
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| CN113689677A (en) * | 2021-08-24 | 2021-11-23 | 四川长虹网络科技有限责任公司 | Reminding method for leaving mobile device in vehicle, vehicle-mounted computer and vehicle |
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