KR20220040587A - Vehicle audio device with smart-phone neglect prevention function and control method thereof - Google Patents

Abstract

The present invention relates to vehicle audio equipment with a function and a control method to prevent vehicle drivers from leaving their smartphones in a vehicle by generating a notification when the driver neglects to take his/her smartphone when preparing to exit the vehicle after the power has been turned off (ACC OFF). A vehicle audio part, which is vehicle audio equipment, detects the current location of a smartphone by obtaining its location information through linkage with the smartphone that transmits the detected location information wirelessly, and determines whether the smartphone has been left inside the vehicle when the vehicle is powered off (ACC off) and it is detected that a driver's door is opened, and generates a notification that the driver has neglected to remove the smartphone from inside the vehicle before starting to exit the vehicle.

Description

Vehicle audio device with smart-phone neglect prevention function and control method thereof

The present invention relates to an audio device for a vehicle having a smartphone neglect prevention function and a control method thereof, and in particular, when a driver leaves the smartphone in the vehicle and attempts to get off the vehicle while the vehicle is powered off (ACC OFF), the smartphone To a vehicle audio device having a smartphone neglect prevention function that generates an alarm for neglect and prevents a user from leaving the smartphone in a vehicle and getting off the vehicle, and a control method thereof.

Recently, an AVN (Audio Video Navigation) device, which is an audio device for a vehicle that integrates CD, DVD player, radio, navigation device, image display device, telematics, and the like, is mounted on a vehicle. These AVN (Audio Video Navigation) devices use various communication methods such as Bluetooth, Wi-Fi, Zigbee, and Wi-Fi Direct that can exchange information and data with a control device that acts as a kind of server computer and peripheral devices in the vehicle. It is equipped with a communication module with

In addition, AVN (Audio Video Navigation) device uses various communication module devices to receive information with smartphones, which are essential for modern people, so that various mirroring (Mirror Link) or DLNA (Digital Living Network Alliance), etc. Mirroring) related technology is used. By using this technology, various application execution screens executed on the smartphone are displayed, or music and videos stored in the smartphone are executed on the AVN (Audio Video Navigation) device of the vehicle.

Moreover, by using the two-way communication technology, the AVN (Audio Video Navigation) device provides ECU information of the vehicle to the smartphone, so that various operation information and maintenance-related information can be checked through the smartphone.

As such, the convergence technology between the AVN device of the vehicle and the smartphone is continuously being developed, and the frequency of using the smartphone using the audio device in the vehicle is increasing due to the diversification of application programs of the smartphone.

In addition, the smartphone can be charged in the vehicle wirelessly/wired, etc., so the driver places the smartphone on the charging cradle or leaves it on the door or seat while driving the vehicle.

In such a state that the smartphone is left in the charging cradle, door or seat, etc., the driver gets off the vehicle while forgetting to leave the smartphone in the vehicle while driving or when driving is finished (vehicle ignition is off) There are times when leaving

After that, the driver remembers leaving the smartphone in the vehicle and leaves the vehicle and moves back to the vehicle to take the smartphone out of the vehicle, perform inconvenient chores without the smartphone for a certain period of time, or mistake the smartphone for loss and use the smartphone. Sometimes you can find As described above, time is wasted to find the smartphone again after leaving the smartphone in the vehicle and leaving the vehicle. Sometimes it can cause psychological stress.

Therefore, there is a need to prevent the smartphone from leaving the vehicle in advance.

On the other hand, the following <Patent Document 1> to <Patent Document 3> are conventionally proposed techniques to prevent leaving a smartphone in a vehicle.

<Patent Document 1> discloses that when the vehicle's engine is turned off, the connection with the mobile terminal connected through short-range wireless communication is released, and the mobile terminal is switched to sleep mode. retry the connection of

If possible, by notifying the vehicle driver that the portable terminal device is left in the vehicle, the driver prevents the driver from accidentally leaving the portable terminal device and gets off and improves the driver's convenience.

However, since this <Patent Document 1> is a method of informing the driver that the mobile terminal device is left in the vehicle with the door locked after the driver gets off the vehicle, the driver opens the vehicle door again, carries the mobile terminal device, and then opens the door. There is an inconvenience of having to lock it.

In addition, <Patent Document 2> discloses that an AVN (Audio Video Navigation) device receives information from an on board diagnostics (OBD) and transmits status information such as driving, stopping, and door opening of the vehicle to a smartphone to provide a vehicle By notifying the smartphone when the vehicle stops or the door is opened, the smartphone user does not lose the smartphone when leaving the vehicle.

However, this <Patent Document 2> requires a process of finding the location of the smartphone by sending and receiving a lot of data between the smartphone and the AVN device, which is an audio device of the vehicle, and generates an alarm that can confirm the location on the smartphone. There is a disadvantage in that the recognition ability of alarm generation is lowered.

In particular, whenever the vehicle door is opened, the location alarm is generated from the smartphone regardless of whether the vehicle engine is turned off. , there are also disadvantages that act as noise.

In addition, <Patent Document 3> discloses that when a passenger leaves a mobile communication terminal such as a smart phone in the wireless charging device and gets off, a smart key is used to inform that the mobile communication terminal is in the wireless charger in the vehicle, so that the mobile communication terminal is connected to the vehicle. Avoid leaving it on the

However, this <Patent Document 3> can be applied only to a vehicle in which the vehicle uses a smart key system, and there is a disadvantage that it cannot be applied to a vehicle without a smart key system.

Republic of Korea Patent Laid-Open Patent No. 10-2014-0052230 (disclosed on May 7, 2014) (Device for preventing neglect of mobile terminal in vehicle and method therefor) Republic of Korea Patent Registration 10-1602341 (Registered on March 4, 2016) (Method and system for preventing loss of smartphone in vehicle using AVN device) Republic of Korea Patent Registration 10-1597470 (Registered on Feb. 18, 2016) (System and method for preventing leaving a mobile communication terminal in a vehicle using a smart key system)

Accordingly, the present invention has been proposed to solve the disadvantages that occur when the driver leaves the smartphone in the vehicle and gets off the vehicle as described above and the various problems that occur in the prior art. When the driver leaves the smartphone in the vehicle and gets off the vehicle, an alarm is generated about the smartphone being left unattended, so that the user prevents the user from leaving the smartphone in the vehicle and getting off. The purpose is to provide a method.

In order to achieve the above object, "a vehicle audio device having a smartphone neglect prevention function" according to the present invention,

Detects the current location of the smartphone, acquires smartphone location information through linking with a smartphone that wirelessly transmits the detected smartphone location information, and turns off the vehicle’s power (ACC off) and detects the driver’s door opening When it is determined that the smartphone is left in the vehicle based on the acquired smartphone location information, and when it is determined that the smartphone is left in the vehicle, it includes a vehicle audio unit that generates an alarm about the smartphone being left in the vehicle. characterized in that

In the above, the smart phone includes: a sensor unit for detecting the current location of the smart phone; a memory for storing the current location information of the smart phone detected by the sensor unit; a control unit for controlling the current location information of the smartphone stored in the memory to be transmitted to the vehicle audio unit; and a communication unit for transmitting current location information of the smart phone to the vehicle audio unit under the control of the control unit.

In the above, the vehicle audio unit acquires and stores smartphone location information from the smartphone when power is supplied to the vehicle and Bluetooth pairing with the smartphone is made, and when the vehicle is powered off, at that point when the vehicle is powered off, the smartphone The location information is acquired and stored, and when the driver's door is opened, the location information of the smart phone is obtained and stored from the smart phone at that point in time.

In the vehicle audio unit, the communication unit for acquiring the location information of the smart phone through communication with the smart phone; a power recognition unit for recognizing power on or off of the vehicle; a door open detection unit detecting the driver's door open; Stores the location information of the smartphone obtained through the communication unit in the memory, and when the vehicle power is turned off and the driver's door is opened through the power recognition unit, based on the stored location information of the smartphone, it is checked whether the smartphone exists in the vehicle, , when the smartphone is left in the vehicle, a control unit for controlling the generation of an alarm for the smartphone left unattended; a speaker that audibly generates an alarm for neglecting the smartphone under the control of the controller; It characterized in that it comprises a display for visually displaying an alarm for neglect of the smart phone under the control of the control unit.

In order to achieve the above object, "a vehicle audio device control method having a smartphone neglect prevention function" according to the present invention,

(a) when the vehicle is turned on in the vehicle audio unit, the step of obtaining the current location information of the smart phone in conjunction with the smart phone and storing it as first location information;

(b) when the vehicle's engine is switched from on to off in the vehicle audio unit, obtaining current location information of the smart phone in conjunction with the smart phone and storing the current location information as second location information;

(c) calculating the first location information and the second location information in the vehicle audio unit, and when it is determined that the driver has a smartphone, canceling the Bluetooth connection with the smartphone and switching to a sleep mode ;

(d) When the driver's seat door is opened in a state where it is determined that the driver does not have a smartphone by analyzing the first location information and the second location information in the vehicle audio unit, the driver's door is opened with the smartphone acquiring the current location information of the smart phone by interworking and storing it as third location information;

(e) when it is finally determined that the smartphone is left in the vehicle by analyzing the second location information and the third location information in the vehicle audio unit, controlling the generation of an alarm for leaving the smartphone characterized in that

In step (d), if the absolute value obtained by subtracting the second position information from the first position information is greater than a preset motion detection value, or if the absolute value is periodically changed, it is determined that the driver is in possession of the smartphone. characterized.

In step (e), when the absolute value obtained by subtracting the third location information from the second location information is smaller than a preset motion detection value, it is determined that the smartphone is left in the vehicle.

According to the present invention, if the driver leaves the smartphone in the vehicle and tries to get off in the state that the vehicle's power is off (ACC OFF), an alarm is generated about the smartphone neglect, preventing the user from leaving the smartphone in the vehicle and getting off This has the effect of improving the driver's convenience.

1 is an overall configuration diagram of an audio device for a vehicle having a smartphone neglect prevention function according to the present invention;
2 is a block diagram of an embodiment of the vehicle audio unit of FIG. 1;
3 is a conceptual diagram of an operation of performing a smartphone neglect prevention function in an audio device for a vehicle in the present invention;
4 is a flowchart illustrating a method for controlling an audio device for a vehicle having a smartphone neglect prevention function according to the present invention.

Hereinafter, an audio device for a vehicle having a smartphone neglect prevention function and a control method thereof according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

The terms or words used in the present invention described below should not be construed as being limited to conventional or dictionary meanings, and the inventor may appropriately define the concept of terms to describe his invention in the best way. It should be interpreted as meaning and concept consistent with the technical idea of the present invention based on the principle that it can be.

Accordingly, the embodiments described in this specification and the configurations shown in the drawings are only preferred embodiments of the present invention, and do not represent all of the technical spirit of the present invention, so various equivalents and It should be understood that there may be variations.

1 is an overall configuration diagram of a vehicle audio device having a smartphone neglect prevention function according to a preferred embodiment of the present invention, and includes a smartphone 100 and a vehicle audio unit 200 .

Here, the vehicle audio unit 200 is a vehicle audio device basically provided in the vehicle, and may be implemented as any one of an audio device, an AV device, and an AVN. In the present invention, it is assumed that the AVN is implemented as a preferred embodiment.

The smartphone 100 is a mobile device owned by the driver, and serves to transmit location information of the smartphone to the vehicle audio unit 200 through interworking with the vehicle audio unit 200 .

The smart phone 100 is a sensor unit 102 for detecting the current location of the smart phone 100, and a memory 103 for storing the current location information of the smart phone 100 detected by the sensor unit 102. , the control unit 101 that controls to transmit the current location information of the smartphone 100 stored in the memory 103 to the vehicle audio unit 200, the control unit 101 of the smartphone 100 according to the control of the control unit 101 and a communication unit 104 for transmitting current location information to the vehicle audio unit 200 .

The vehicle audio unit 200 detects the current location of the smart phone 100, obtains the smart phone location information through interworking with the smart phone 100 that wirelessly transmits the detected smart phone location information, and the power of the vehicle When this off and the driver's seat door open is detected, it is determined whether the smartphone 100 is left in the vehicle based on the acquired smartphone location information, and it is determined that the smartphone 100 is left in the vehicle. When the smartphone 100 is left in the vehicle, it serves to generate an alarm.

The vehicle audio unit 200 obtains the smartphone location information from the smartphone 100 when the vehicle power is supplied and Bluetooth pairing with the smartphone 100 is made, and stores it as the first location information (A). , when the power of the vehicle is turned off, the smart phone location information is obtained from the smart phone 100 at that point and stored as the second location information (B), and when the driver's door is opened, the smart phone 100 is obtained at that point in time. ) to obtain the smartphone location information and store it as the third location information (C).

As shown in FIG. 2 , the vehicle audio unit 200 includes a communication unit 201 that acquires location information of the smartphone 100 through communication with the smartphone 100 , and power on the vehicle (ACC on). Alternatively, the location information of the smart phone 100 acquired through the power recognition unit 202 for recognizing ACC off, the door open detection unit 203 for detecting the opening of the driver's door door, and the communication unit 201 is stored in memory. Stored in 207, and based on the location information of the stored smart phone 100 when the vehicle power is turned off and the driver's door is opened through the power recognition unit 202, it is checked whether the smart phone 100 exists in the vehicle, , when the smartphone 100 is left in the vehicle, the control unit 204 that controls the generation of an alarm for the smartphone neglect, an audible alarm about the neglect of the smartphone 100 according to the control of the control unit 204 and a display 206 that visually displays an alarm about the neglect of the smartphone 100 under the control of the speaker 205 generated by the controller 204 .

The operation of the vehicle audio device having the smartphone neglect prevention function according to the present invention configured as described above will be described in detail as follows.

First, operating power is supplied to the vehicle audio unit 200 when the vehicle is started while the driver is in the vehicle and has the smartphone 100 in possession or left in the vehicle.

When the vehicle audio unit 200 is activated by supplying power, it attempts Bluetooth pairing with the smartphone 100 through the communication unit 201 .

When Bluetooth pairing is made with the vehicle audio unit 200 , the smartphone 100 generates current location information of the smartphone 100 using the sensor unit 102 . Here, the sensor unit 102 may be implemented as a three-axis acceleration sensor, and may generate current location information through this.

When the control unit 101 of the smartphone 100 generates current location information through the sensor unit 102 , it stores it in the memory 103 , and also transmits the current location information of the smartphone through the communication unit 104 to the vehicle audio unit. (200).

The communication unit 201 of the vehicle audio unit 200 acquires the current location information of the smartphone transmitted from the smartphone 10 ) and transmits it to the control unit 204 . The controller 204 stores the transmitted current location information of the smart phone as the first location information A in the memory 207 .

Next, when the driver ends vehicle operation and turns off the vehicle, the power recognition unit 202 of the vehicle audio unit 200 recognizes this and transmits a power-off signal to the control unit 204 .

The control unit 204 interworks with the smart phone 100 through the communication unit 201 when the vehicle ignition is switched from an on (ACC on) state to an off (ACC off) state through the power recognition unit 202 . to obtain the current location information of the smartphone and store it in the memory 207 as the second location information (B).

Next, the control unit 204 calculates the first location information (A) and the second location information (B) to determine whether the driver has a smartphone.

That is, if the absolute value (│A - B│) obtained by subtracting the second location information (B) from the first location information (A) is greater than a preset motion detection value or if the absolute value is periodically changed, the driver is deemed to possess

In other words, if the absolute value (│A - B│) obtained by subtracting the second location information (B) from the first location information (A) is greater than the preset motion detection value, the driver places the smartphone on the cradle or seat of the vehicle. The amount of displacement is large by moving to the side, and in this case, it is determined that the driver has a smartphone. In addition, even if the absolute value (│A - B│) obtained by subtracting the second location information (B) from the first location information (A) is periodically changed, it is determined that the driver continues to hold the smartphone. . In this case, it means that the displacement amount of the smartphone increases due to the driver's pocket or palm holding.

When it is determined that the driver possesses the smartphone through the above process, the control unit 204 operates an internal sleep counter to determine the Bluetooth connection disconnection time point. When the time of the sleep counter elapses a specific time preset for Bluetooth connection release, the Bluetooth connection with the smartphone is released. After that, it switches to sleep mode.

On the other hand, the control unit 204 analyzes the first position information (A) and the second position information (B), the absolute value (│) obtained by subtracting the second position information (B) from the first position information (A) If A - B│) is smaller than the preset motion detection value or there is no change in the absolute value (│A - B│) obtained by subtracting the second location information (B) from the first location information (A), the driver The first judgment is made that the phone is not in possession.

Thereafter, when the driver's seat door is detected through the door open detection unit 203, the current location information of the smart phone is obtained in conjunction with the smart phone 100 and stored in the memory 207 as the third location information (C). do.

Next, if the absolute value (│B - C│) obtained by subtracting the stored second location information (B) and the third location information (C) is greater than the preset motion detection value, it is determined that the amount of position displacement of the smartphone is large and it is judged that the driver got off the car with the smartphone.

On the other hand, if the absolute value (│B - C│) obtained by subtracting the second location information (B) and the third location information (C) is smaller than the preset motion detection value, there is no or very small position displacement of the smartphone. It is judged that this vehicle has been left unattended.

When it is determined that the smartphone is left unattended in the vehicle, the control unit 204 controls generation of an alarm for leaving the smartphone unattended.

For example, by generating an alarm for neglecting the smartphone, an alarm for neglecting the smartphone is generated audibly through the speaker 205 (eg, "Your cell phone is in the car. Take your cell phone" by sending a voice), At the same time, an alarm is displayed visually through the display 206 so that the driver takes the smartphone before getting off.

3 is an operation state diagram when a driver gets off a smartphone while holding the smartphone and when trying to get off after leaving the smartphone in the vehicle. The flow indicated by the blue solid line in FIG. 3 is the operating state when the driver has the smartphone while getting off, and the flow indicated by the red solid line is the operating state when the driver leaves the smartphone in the vehicle and gets off.

As such, the present invention warns that the smartphone is left in the vehicle before the driver gets off when the smartphone is left in the vehicle, so that the driver can take the smartphone before getting off. there will be

4 is a flowchart showing a method for controlling a vehicle audio device having a smartphone neglect prevention function according to the present invention. This shows the process of performing the smartphone neglect prevention function.

As shown in FIG. 4 , the method for controlling a vehicle audio device having a smartphone neglect prevention function according to the present invention is (a) interlocked with the smartphone 100 when the vehicle is started in the vehicle audio unit 200 . to obtain the current location information of the smartphone 100 and store it as the first location information (A) (S101), (b) when the vehicle is switched from on to off in the vehicle audio unit 200 , Steps (S102 - S103), (c) in the vehicle audio unit 200 to obtain the current location information of the smartphone 100 in conjunction with the smartphone 100 and store it as the second location information (B) (S102 - S103) By calculating the first location information (A) and the second location information (B), when it is determined that the driver is in possession of the smartphone 100, the Bluetooth connection with the smartphone is canceled and the device is switched to a sleep mode. Steps (S104 - S108), (d) by analyzing the first location information (A) and the second location information (B) in the vehicle audio unit 200 to determine that the driver does not possess the smartphone 100 In the state in which the first determination has been made, when the driver's seat door is detected to be opened, the steps of acquiring the current location information of the smart phone in conjunction with the smart phone 100 and storing it as the third location information (C) (S109 - S110), (e) the vehicle audio unit 200 analyzes the second location information (B) and the third location information (C) to finally determine that the smartphone is left in the vehicle, and controlling the alarm generation (S111 - S112).

A method of controlling an audio device for a vehicle having a smartphone neglect prevention function according to the present invention configured as described above will be described in detail as follows.

First, operating power is supplied to the vehicle audio unit 200 when the vehicle is started while the driver is in the vehicle and has the smartphone 100 in possession or left in the vehicle.

When the vehicle audio unit 200 is activated by supplying power, it attempts Bluetooth pairing with the smartphone 100 through the communication unit 201 .

When Bluetooth pairing is made with the vehicle audio unit 200 , the smartphone 100 generates current location information of the smartphone 100 using the sensor unit 102 . Here, the sensor unit 102 may be implemented as a three-axis acceleration sensor, and may generate current location information through this.

When the control unit 101 of the smartphone 100 generates current location information through the sensor unit 102 , it stores it in the memory 103 , and also transmits the current location information of the smartphone through the communication unit 104 to the vehicle audio unit. (200).

The communication unit 201 of the vehicle audio unit 200 acquires the current location information of the smartphone transmitted from the smartphone 100 and transmits it to the control unit 204 . The controller 204 stores the transmitted current location information of the smart phone as the first location information A in the memory 207 (S101).

Next, when the driver ends vehicle operation and turns off the vehicle, the power recognition unit 202 of the vehicle audio unit 200 recognizes this and transmits a power-off signal to the control unit 204 .

When the ignition of the vehicle is switched from an on (ACC on) state to an off (ACC off) state through the power recognition unit 202 ( S102 ), the control unit 204 controls the smart phone 100 through the communication unit 201 . ) to obtain the current location information of the smartphone and store it in the memory 207 as the second location information (B) (S103).

Next, the control unit 204 calculates the first location information (A) and the second location information (B) in step S104 to determine whether the driver has a smartphone.

That is, if the absolute value (│A - B│) obtained by subtracting the second location information (B) from the first location information (A) is greater than a preset motion detection value or if the absolute value is periodically changed, the driver is deemed to possess

In other words, if the absolute value (│A - B│) obtained by subtracting the second location information (B) from the first location information (A) is greater than the preset motion detection value, the driver places the smartphone on the cradle or seat of the vehicle. The amount of displacement is large by moving to the side, and in this case, it is determined that the driver has a smartphone. In addition, even if the absolute value (│A - B│) obtained by subtracting the second location information (B) from the first location information (A) is periodically changed, it is determined that the driver continues to hold the smartphone. . In this case, it means that the displacement amount of the smartphone increases due to the driver's pocket or palm holding.

If it is determined that the driver is in possession of the smartphone through the above process, the control unit 204 moves to step S105 and operates an internal sleep counter to determine the Bluetooth connection disconnection time point.

Next, when the time of the sleep counter elapses a preset specific time for Bluetooth connection release in step S106, the process moves to step S107 to release the Bluetooth connection with the smartphone. Thereafter, in step S108, it switches to the sleep mode.

On the other hand, the control unit 204 analyzes the first position information (A) and the second position information (B), the absolute value (│) obtained by subtracting the second position information (B) from the first position information (A) If A - B│) is smaller than the preset motion detection value or there is no change in the absolute value (│A - B│) obtained by subtracting the second location information (B) from the first location information (A), the driver The first judgment is made that the phone is not in possession.

Thereafter, when the driver's seat door is detected through the door open detection unit 203 in step S109, in step S110, the current location information of the smartphone is obtained by interworking with the smartphone 100 and the third location information (C). stored in the memory 207 .

Next, if the absolute value (│B - C│) obtained by subtracting the stored second location information (B) and the third location information (C) in step S111 is greater than the preset motion detection value, the amount of position displacement of the smartphone It is judged to be large, and it is judged that the driver got off the car with the smartphone.

On the other hand, if the absolute value (│B - C│) obtained by subtracting the second location information (B) and the third location information (C) is smaller than the preset motion detection value, there is no or very small position displacement of the smartphone. It is judged that this vehicle has been left unattended.

When it is determined that the smartphone is left unattended in the vehicle, the control unit 204 moves to step S112 to control the generation of an alarm for leaving the smartphone unattended.

For example, by generating an alarm for neglecting the smartphone, an alarm for neglecting the smartphone is generated audibly through the speaker 205 (eg, "Your cell phone is in the car. Take your cell phone" by sending a voice), At the same time, an alarm is displayed visually through the display 206 so that the driver takes the smartphone before getting off.

As described above, in the present invention, if the smartphone is left in the vehicle, it warns that the smartphone is left in the vehicle before the driver gets off, so that the driver can take the smartphone before getting off. there will be

Although the invention made by the present inventor has been described in detail according to the above embodiment, the present invention is not limited to the above embodiment and it is common knowledge in the art that various changes can be made without departing from the gist of the present invention. It is self-evident to those who have

100: smartphone 101: control unit
102: sensor unit 103: memory
104: communication unit 200: vehicle audio unit
201: communication unit 202: power recognition unit
203: door open detection unit 204: control unit
205: speaker 206: display
207: memory

Claims (7)

As an audio device for a vehicle to prevent leaving a smartphone in a vehicle and getting off,
It detects the current location of the smartphone and acquires smartphone location information through linking with a smartphone that wirelessly transmits the detected smartphone location information. When detected, it is determined whether the smartphone is left in the vehicle based on the acquired smartphone location information, and when it is determined that the smartphone is left in the vehicle, an alarm for leaving the smartphone in the vehicle before the driver gets off A vehicle audio device having a smartphone neglect prevention function, characterized in that it includes a vehicle audio unit that generates a .
The method according to claim 1, The smart phone is a sensor unit for detecting the current location of the smart phone; a control unit controlling the current location information of the smartphone detected by the sensor unit to be transmitted to the vehicle audio unit; and a communication unit for transmitting the current location information of the smartphone to the vehicle audio unit under the control of the control unit.
The method according to claim 1, When the vehicle power is supplied and Bluetooth pairing with the smartphone is made, the vehicle audio unit acquires and stores smartphone location information from the smartphone, and when the vehicle is powered off, the smartphone at that point in time A vehicle audio device with a smartphone neglect prevention function, characterized in that it acquires and stores the location information of a smart phone from the smart phone and stores the location information of the smart phone from the smart phone at that point when the driver's door is detected to be open.
The method according to claim 1, The vehicle audio unit communication unit for acquiring the location information of the smartphone through communication with the smartphone; a power recognition unit for recognizing power on or off of the vehicle; a door open detection unit detecting the driver's door open; Stores the location information of the smartphone obtained through the communication unit in the memory, and when the vehicle power is turned off and the driver's door is opened through the power recognition unit, based on the stored location information of the smartphone, it is checked whether the smartphone exists in the vehicle, , when the smartphone is left in the vehicle, a control unit for controlling the generation of an alarm for the smartphone left unattended; a speaker that audibly generates an alarm for leaving the smartphone under the control of the controller; and a display for visually displaying an alarm regarding the neglect of the smartphone under the control of the control unit.
A method for preventing the smartphone from being left in a vehicle and getting off the vehicle by using the vehicle audio device having the smartphone neglect prevention function according to any one of claims 1 to 4, comprising:
(a) when the vehicle is turned on in the vehicle audio unit, the step of obtaining the current location information of the smart phone in conjunction with the smart phone and storing it as first location information;
(b) when the vehicle's engine is switched from on to off in the vehicle audio unit, obtaining current location information of the smart phone in conjunction with the smart phone and storing the current location information as second location information;
(c) calculating the first location information and the second location information in the vehicle audio unit, and when it is determined that the driver has a smartphone, canceling the Bluetooth connection with the smartphone and switching to a sleep mode ;
(d) When the driver's seat door is opened in a state where it is determined that the driver does not have a smartphone by analyzing the first location information and the second location information in the vehicle audio unit, the driver's door is opened with the smartphone acquiring the current location information of the smart phone by interworking and storing it as third location information;
(e) when it is finally determined that the smartphone is left in the vehicle by analyzing the second location information and the third location information in the vehicle audio unit, controlling the generation of an alarm for leaving the smartphone A method for controlling an audio device for a vehicle having a smartphone neglect prevention function, characterized in that.
The method of claim 5, wherein in step (d), if the absolute value obtained by subtracting the second position information from the first position information is greater than a preset motion detection value or the absolute value is periodically changed, it is determined that the driver is in possession of the smartphone. A method of controlling an audio device for a vehicle having a smartphone neglect prevention function, characterized in that it is determined.
The smart phone neglect of claim 5, wherein in step (e), if the absolute value obtained by subtracting the third location information from the second location information is smaller than a preset motion detection value, it is determined that the smart phone is left in the vehicle. A method for controlling an audio device for a vehicle with a preventive function.

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