JP6282548B2 - In-vehicle device, linkage system, and charging start time notification method - Google Patents

Description

  The present invention relates to an in-vehicle device, a cooperation system, and a charging start time notification method, and is particularly suitable for use in a cooperation system in which a mobile terminal and an in-vehicle device are connected by wireless communication.

  2. Description of the Related Art Conventionally, a technology has been used in which a mobile terminal and an in-vehicle device are connected by wireless communication to cooperate with each other. With such a technique, for example, a navigation route of a mobile terminal can be used to search and guide a guidance route to a destination, and the guidance screen and guidance voice can be output from the in-vehicle device.

  In this way, while the mobile terminal is used by wireless communication connection to the in-vehicle device, the mobile terminal is not charged unless the charger is connected to the mobile terminal. For this reason, there is a possibility that the remaining battery level of the mobile terminal is insufficient before reaching the destination, and the mobile terminal cannot be used on the way. Therefore, conventionally, a technique has been devised in which when it is estimated that the remaining battery level of the mobile terminal is insufficient before reaching the destination, the user is informed that the mobile terminal is to be charged.

  For example, Patent Document 1 below relates to a navigation system in which a mobile terminal and an in-vehicle device are wirelessly connected, and based on the current remaining battery capacity of the mobile terminal and the reference power consumption of the mobile terminal, A technique for outputting a message recommending charging of a mobile terminal to a user when it is determined that the remaining battery capacity of the mobile terminal is less than a predetermined level by the estimated arrival time is disclosed.

  Patent Document 2 below relates to an in-vehicle communication system in which a mobile device and an in-vehicle device are wirelessly connected, and a remaining capacity arrival time, which is a time when the remaining battery level of the mobile device reaches a threshold value or less, A technique for predicting a travel end time, which is a time to end travel, and notifying the occupant that the battery is urged to charge when the remaining capacity arrival time is earlier than the travel end time is disclosed.

  Patent Document 3 below relates to an in-vehicle device that is wirelessly connected to a mobile device, estimates the power consumption of the mobile device until reaching the destination, and uses the power consumption to determine the remaining battery level of the mobile device. A technique for outputting a message indicating that there is no need to wire-connect a portable device is disclosed.

JP 2011-169632 A JP 2011-223512 A JP 2012-173144 A

  According to the techniques disclosed in Patent Documents 1 to 3, the user at least reaches the destination by charging the mobile terminal in response to a notification from the in-vehicle device until the destination is reached. Until then, the mobile terminal can be used. However, even if the technology disclosed in Patent Documents 1 to 3 can use the mobile terminal until the destination is reached, the destination (especially the purpose without the charging environment of the mobile terminal) can be used. There is a problem that the mobile terminal may not be used in the middle due to a shortage of remaining battery power while the mobile terminal is being used on the ground.

  For example, since it is estimated that the remaining battery level does not fall below the threshold before reaching the destination, the user may not be prompted to charge to the destination. In addition, since it is estimated that the remaining battery level is below the threshold immediately before reaching the destination, the user may be prompted to charge immediately before reaching the destination. In these cases, the remaining battery level when reaching the destination may be only slightly above the threshold value. In such a case, there is a high possibility that the mobile terminal cannot be used in the middle due to a shortage of remaining battery power at the destination.

  The present invention has been made to solve such a problem, and prompts the user to charge the mobile terminal at an appropriate timing so that the mobile terminal can be sufficiently used at the destination. The purpose is to be able to.

  In order to solve the above-described problems, in the present invention, the current remaining battery level of the mobile terminal, the amount of power consumed per unit time of the mobile terminal, the amount of charge per unit time of the mobile terminal, Based on the estimated travel time and the required amount of battery power required to use the mobile terminal at the destination, the remaining battery level of the mobile terminal when reaching the destination is greater than the required power amount. Thus, the charging start time of the mobile terminal is calculated.

  According to the present invention configured as described above, by starting charging of the mobile terminal at the informed charging start time, the remaining battery level of the mobile terminal can be used at the destination when the destination is reached. It can be more than the required power consumption. For this reason, according to the present invention, charging of the mobile terminal can be started at an appropriate timing, and the user can sufficiently use the mobile terminal at the destination.

It is a figure which shows the structural example of the cooperation system which concerns on 1st Embodiment of this invention. It is a figure which shows an example of transition of the battery remaining charge of the portable terminal which concerns on 1st Embodiment of this invention. It is a block diagram which shows the function structural example of the portable terminal which concerns on 1st Embodiment of this invention. It is a block diagram which shows the function structural example of the vehicle-mounted apparatus which concerns on 1st Embodiment of this invention. It is a figure which shows an example of the information memorize | stored in the memory | storage part which concerns on 1st Embodiment of this invention. It is a figure which shows an example of the information memorize | stored in the required electric energy storage part which concerns on 1st Embodiment of this invention. It is a flowchart which shows an example of the process by the cooperation system which concerns on 1st Embodiment of this invention. It is a block diagram which shows the function structural example of the vehicle-mounted apparatus which concerns on 2nd Embodiment of this invention. It is a figure for demonstrating an example (1st example) of the additional function of the vehicle-mounted apparatus which concerns on each embodiment of this invention. It is a figure for demonstrating an example (2nd example) of the additional function of the vehicle-mounted apparatus which concerns on each embodiment of this invention.

[Configuration Example of Cooperation System 10]
Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a diagram illustrating a configuration example of a cooperation system 10 according to the first embodiment of the present invention. The cooperation system 10 includes a mobile terminal 100 and an in-vehicle device 200. The mobile terminal 100 and the in-vehicle device 200 are connected to each other by wireless communication means such as Bluetooth (registered trademark), Wi-Fi, or the like.

  The in-vehicle device 200 is a device mounted on a vehicle such as an automobile. The in-vehicle device 200 includes a display 200a and a speaker 200b. The mobile terminal 100 is a device possessed by a user, such as a smartphone, a tablet terminal, or a mobile phone. The portable terminal 100 includes a battery 100a, and can be operated by electric power supplied from the battery 100a. The mobile terminal 100 can use various applications including a navigation application. The navigation application is an application that searches and guides a guidance route to a destination.

  The mobile terminal 100 wirelessly connects to the in-vehicle device 200 to display the guidance screen on the display 200a of the in-vehicle device 200 while the navigation application guides the guidance route to the destination. Sound can be output from the speaker 200b of the in-vehicle device 200. In addition, the portable terminal 100 can be charged with the battery 100 a by the power supplied from the charger 300 via the charging cable 302 by being connected to the charger 300 via the charging cable 302.

  As the charger 300, for example, a charger inserted into a cigar socket equipped in a vehicle, a portable charger incorporating a secondary battery such as a lithium ion battery, or the like can be used. When the vehicle or the vehicle-mounted device 200 is equipped with a USB (Universal Serial Bus) terminal, the mobile terminal 100 can be charged by connecting the mobile terminal 100 to the USB terminal via a USB cable. Further, as the charger 300, a charger in which a charging cable 302 is integrated can be used.

  The cooperation system 10 configured as described above allows the in-vehicle device 200 to calculate an appropriate charging start time tb of the mobile terminal 100 and notify the charging start time tb. The appropriate charging start time tb is the required amount of power required at the destination when the mobile terminal 100 reaches the destination by starting charging the portable terminal 100 from the charging start time tb. It is a time when Pc is reached. The user can use the portable terminal 100 until reaching the destination by starting the charging of the portable terminal 100 at the charging start time tb. Will be able to use.

[Example of transition of remaining battery level of portable terminal 100]
FIG. 2 is a diagram illustrating an example of the transition of the remaining battery level of the mobile terminal 100 according to the first embodiment of the present invention.

  In the graph of FIG. 2, ta is the current time (for example, the time when the mobile terminal 100 starts guiding the guidance route in a state where the mobile terminal 100 is wirelessly connected to the in-vehicle device 200), and tb starts charging. Time, tc is the estimated arrival time of the destination, and t is the estimated travel time to the destination. Further, Pa is the current remaining battery level of the mobile terminal 100, Pb is the remaining battery level of the mobile terminal 100 at the charging start time tb, and Pc is the necessary power required to use the mobile terminal 100 at the destination. Amount.

  As shown in the period from the current time ta to the charging start time tb in FIG. 2, if the mobile terminal 100 continues to be used without being connected to the charger 300, the remaining battery level of the mobile terminal 100 is The power consumption per hour continues to decrease as p1.

  On the other hand, as shown in the period from the charging start time tb to the estimated arrival time tc in FIG. 2, if the mobile terminal 100 continues to be used while connected to the charger 300, the mobile terminal 100 is charged. Therefore, the remaining battery level of the mobile terminal 100 continues to increase with the charge amount per unit time as p2.

  As shown in FIG. 2, the cooperation system 10 of the present embodiment is configured so that when the mobile terminal 100 reaches the destination at the estimated arrival time tc, the remaining battery level of the mobile terminal 100 uses the mobile terminal 100 at the destination. The in-vehicle device 200 calculates the charging start time tb so as to obtain the necessary power amount Pc, and notifies the charging start time tb.

  In response to this notification, when the user connects the portable terminal 100 to the charger 300 via the charging cable 302 at the charging start time tb and starts charging the portable terminal 100, the portable terminal 100 is shown in FIG. Until the arrival at the expected arrival time tc, the charging amount per unit time is set to p2, and the charging time is set to t2 (= tc−tb). Thereby, the battery remaining amount of the battery 100a becomes the required power amount Pc when it arrives at the destination at the estimated arrival time tc. Therefore, the user can use the portable terminal 100 until reaching the destination, and can sufficiently use the portable terminal 100 even at the destination.

[Functions of the mobile terminal 100]
FIG. 3 is a block diagram illustrating a functional configuration example of the mobile terminal 100 according to the first embodiment of the present invention. As shown in FIG. 3, the portable terminal 100 includes a battery 100a, a map data storage unit 100b, a host vehicle position detection device 100c, and a model information storage unit 100d. The mobile terminal 100 includes a route search unit 101, an estimated travel time calculation unit 102, an estimated arrival time calculation unit 103, a route guide unit 104, a remaining battery level detection unit 105, and a communication unit 106 as functional configurations.

  The map data storage unit 100b stores map data. The own vehicle position detection device 100c detects the current position of the own vehicle. The own vehicle position detection device 100c includes, for example, a GPS (Global Positioning System) and an autonomous navigation unit.

  The model information storage unit 100d stores model information of the mobile terminal 100. The model information stored in the model information storage unit 100d includes at least a model ID for uniquely identifying the mobile terminal 100.

  Based on the map data stored in the map data storage unit 100b, the route search unit 101 guides the route from the current position of the vehicle detected by the vehicle position detection device 100c to a destination arbitrarily set by the user. Explore.

  The expected travel time calculation unit 102 calculates an expected travel time t to the destination. For example, the predicted travel time calculation unit 102 calculates the predicted travel time t to the destination, the travel distance from the current position of the vehicle to the destination, and the predicted travel speed from the current position of the vehicle to the destination (for example, the destination Up to the road up to the legal speed).

  The estimated arrival time calculation unit 103 calculates the estimated arrival time tc of the destination. For example, the predicted arrival time tc is calculated by adding the predicted travel time t calculated by the predicted travel time calculation unit 102 to the current time ta. The current time ta can be obtained from a built-in clock (not shown) of the mobile terminal 100.

  The route guidance unit 104 is based on the map data stored in the map data storage unit 100b, the guidance route searched by the route search unit 101, and the current position of the vehicle detected by the own vehicle position detection device 100c. , Guide the guidance route to the destination.

  The remaining battery level detection unit 105 detects the remaining battery level P of the battery 100a. For example, the battery remaining amount detection unit 105 converts the battery remaining amount P into a numerical value in a predetermined unit (for example,%, mAh, etc.) based on the current voltage value of the battery 100a and outputs it.

  The communication unit 106 controls wireless communication with the in-vehicle device 200. For example, the communication unit 106 uses the wireless communication with the in-vehicle device 200 while the route guide unit 104 guides the route to the destination, and the guidance screen (for example, the guidance route screen, the intersection guide screen) and the guidance. The voice is transmitted to the in-vehicle device 200. Thus, the route guidance screen is displayed on the display 200a of the in-vehicle device 200, and the route guidance voice can be output from the speaker 200b of the in-vehicle device 200.

  In addition, the communication unit 106 transmits information necessary for the in-vehicle device 200 to calculate the charging start time tb of the battery 100a to the in-vehicle device 200 through wireless communication with the in-vehicle device 200. The information necessary for calculating the charging start time tb of the battery 100a is uniquely identified by the remaining battery level P detected by the remaining battery level detection unit 105 and the destination of the guidance route searched by the route search unit 101. Destination ID, predicted travel time t to the destination calculated by the predicted travel time calculation unit 102, predicted arrival time tc of the destination calculated by the predicted arrival time calculation unit 103, and model information storage unit The model ID is stored in 100d.

[Function of in-vehicle device 200]
FIG. 4 is a block diagram illustrating a functional configuration example of the in-vehicle device 200 according to the first embodiment of the present invention. As shown in FIG. 4, the in-vehicle device 200 includes a display 200a, a speaker 200b, a storage unit 200c, and a necessary power storage unit 200d. The in-vehicle device 200 includes a communication unit 201, a battery remaining amount specifying unit 202, a power consumption amount specifying unit 203, a charge amount specifying unit 204, a required power amount specifying unit 205, an expected travel time specifying unit 206, as its functional configuration. An expected arrival time specifying unit 207, a charging start time calculating unit 208, and a notification unit 209 are provided.

  As illustrated in FIG. 5, the storage unit 200 c stores the power consumption p1 per unit time of the mobile terminal 100 and the charge amount p2 per unit time of the mobile terminal 100 for each model of the mobile terminal 100 (for each model ID). ). In the storage unit 200c, the power consumption amount p1 per unit time and the charge amount p2 per unit time for each model of the plurality of mobile terminals 100 are stored in advance so as to correspond to each model of the plurality of mobile terminals 100. Has been.

  As shown in FIG. 6, the required power storage unit 200 d stores, for each destination (for each destination ID), a required power amount Pc that is a remaining battery capacity required to use the mobile terminal 100 at the destination. . The required power amount storage unit 200d stores in advance the required power amount Pc for each of the plurality of destinations so as to correspond to each of the plurality of destinations.

  The communication unit 201 controls wireless communication with the mobile terminal 100. For example, the communication unit 201 receives the guidance screen and the guidance voice from the portable terminal 100 by wireless communication with the portable terminal 100 while the route guidance unit 104 of the portable terminal 100 guides the route to the destination. To do. The communication unit 201 displays the guidance screen received from the portable terminal 100 on the display 200a and outputs the guidance voice received from the portable terminal 100 from the speaker 200b of the in-vehicle device 200. Further, the communication unit 201 communicates information necessary for the in-vehicle device 200 to calculate the charging start time tb of the battery 100a through wireless communication with the mobile terminal 100 (remaining battery charge P, destination ID, expected travel time t, The estimated arrival time tc and model ID) are received from the portable terminal 100.

  The battery remaining amount specifying unit 202 specifies the current battery remaining amount Pa of the mobile terminal 100. Specifically, the battery remaining amount identifying unit 202 identifies the battery remaining amount P received by the communication unit 201 from the portable terminal 100 at the current time ta as the current battery remaining amount Pa of the portable terminal 100.

  The power consumption amount specifying unit 203 specifies the power consumption amount p1 per unit time of the mobile terminal 100. Specifically, the power consumption amount specifying unit 203 refers to the unit ID associated with the model ID by referring to the storage unit 200c based on the model ID received by the communication unit 201 from the mobile terminal 100. Is determined.

  The charge amount specifying unit 204 specifies the charge amount p2 per unit time of the mobile terminal 100. Specifically, the charge amount specifying unit 204 refers to the storage unit 200c based on the model ID received by the communication unit 201 from the mobile terminal 100, so that the unit of charge per unit time associated with the model ID is The charge amount p2 is specified.

  The required power amount specifying unit 205 specifies the required power amount Pc that is the remaining battery capacity required to use the mobile terminal 100 at the destination. Specifically, the required power amount specifying unit 205 is associated with the destination ID by referring to the required power amount storage unit 200d based on the destination ID received by the communication unit 201 from the portable terminal 100. The required power amount Pc is specified.

  The predicted travel time specifying unit 206 specifies the expected travel time t to the destination. Specifically, the predicted travel time specifying unit 206 specifies the predicted travel time t received by the communication unit 201 from the mobile terminal 100 as the predicted travel time t to the destination.

  The estimated arrival time specifying unit 207 specifies the estimated arrival time tc of the destination. Specifically, the estimated arrival time specifying unit 207 specifies the estimated arrival time tc received by the communication unit 201 from the mobile terminal 100 as the estimated arrival time tc of the destination.

  The charging start time calculation unit 208 calculates the charging start time tb of the mobile terminal 100. Specifically, the charging start time calculation unit 208 includes the current battery remaining amount Pa specified by the battery remaining amount specifying unit 202, the power consumption p1 per unit time specified by the power consumption specifying unit 203, and the like. The charge amount p2 per unit time specified by the charge amount specifying unit 204, the required power amount Pc specified by the required power amount specifying unit 205, and the expected travel time t specified by the expected travel time specifying unit 206, Based on the estimated arrival time tc specified by the estimated arrival time specifying unit 207, the mobile terminal 100 is charged so that the remaining battery amount P of the mobile terminal 100 becomes the required power amount Pc when the destination is reached. The start time tb is calculated.

For example, the charging start time calculation unit 208 calculates the charging time t2 of the mobile terminal 100 using the following mathematical formula (1).
t2 = (Pc−Pa + p1 × t) / (p1 + p2) (1)
Then, the charging start time calculation unit 208 calculates the charging start time tb by the following mathematical formula (2). Tb = tc−t2 (2)

  If the charging start time tb calculated in this way starts charging the portable terminal 100 at the charging start time tb, the remaining battery level P of the portable terminal 100 at the destination reaches the destination. It is time when it becomes the required required electric energy Pc.

For example, it is assumed that the values of parameters necessary for calculating the charging start time tb are specified as follows.
Expected travel time t: 1.5 (h)
Current battery remaining amount Pa: 920 (mAh)
Required electric energy Pc: 1495 (mAh)
Power consumption per unit time p1: 550 (mAh)
Charge amount per unit time p2: 1380 (mAh)
Estimated arrival time tc: 17:30

  In this case, the charging start time calculation unit 208 calculates “0.725 (h) ≈43 (m)” as the charging time t2 of the mobile terminal 100 by the above mathematical formula (1). Then, the charging start time calculation unit 208 calculates “16:47” as the charging start time tb by the above formula (2).

  The estimated arrival time tc can be replaced with the current time ta + the estimated travel time t. In this case, in the present embodiment, the mobile terminal 100 can be configured not to transmit the estimated arrival time tc to the in-vehicle device 200.

Further, the charging start time calculation unit 208 may calculate the usage time t1 until charging of the mobile terminal 100 is started by the following mathematical formula (3).
t1 = (Pa−Pc + p2 × t) / (p1 + p2) (3)
Then, the charging start time calculation unit 208 may calculate the charging start time tb by the following mathematical formula (4) by using the current time ta instead of the estimated arrival time tc.
tb = ta + t1 (4)

  When the charging start time calculation unit 208 uses the current time ta, the in-vehicle device 200 can specify the current time ta by providing a current time specifying unit (not shown). For example, the current time specifying unit can obtain the current time ta from the built-in clock of the in-vehicle device 200. Alternatively, the current time specifying unit may specify the current time ta received by the communication unit 201 from the mobile terminal 100 as the current time ta.

The notification unit 209 notifies the charge start time tb calculated by the charge start time calculation unit 208. For example, the notification unit 209 displays a message for notifying the charging start time tb on the display 200a, or outputs a sound for notifying the charging start time tb from the speaker 200b. The notification unit 209 may perform a notification process for prompting the user to perform charging at the charging start time tb before a predetermined time until the charging start time tb is reached. Alternatively, the notification unit 209 may perform notification processing that prompts the user to immediately charge when the charging start time tb is reached. Further, the notification unit 209 may cause the portable terminal 100 to perform a notification process of the charging start time tb via wireless communication with the portable terminal 100 by the communication unit 201.

  Each of the functional blocks (functional blocks 101 to 106 shown in FIG. 3 and functional blocks 201 to 209 shown in FIG. 4) can be configured by any of hardware, DSP (Digital Signal Processor), and software. It is. For example, when configured by software, each functional block is actually configured by including a CPU, RAM, ROM, etc. of a computer, and a program stored in a recording medium such as RAM, ROM, hard disk, or semiconductor memory operates. Is realized.

[An example of information stored in the storage unit 200c]
FIG. 5 is a diagram illustrating an example of information stored in the storage unit 200c according to the first embodiment of the present invention. As illustrated in FIG. 5, a table in which “power consumption”, “charger”, “cable”, and “charge amount” are set in the storage unit 200 c for each model ID of the mobile terminal 100. Information is stored.

  In the “power consumption”, a power consumption p1 per unit time when the mobile terminal 100 is used without being charged is set. The power consumption per unit time p1 is an average power consumption per unit time when a predetermined application is used in the mobile terminal 100 in a state where the mobile terminal 100 is wirelessly connected to the in-vehicle device 200. It is preferred to use an amount.

  In the “charger”, identification information of the charger 300 used when charging the mobile terminal 100 is set. In the “cable”, identification information of the charging cable 302 used when charging the mobile terminal 100 is set. The “charge amount” includes a charge amount p2 per unit time when the portable terminal 100 is charged using the charger 300 set to “charger” and the charge cable 302 set to “cable”. Is set.

  The power consumption amount specifying unit 203 of the in-vehicle device 200 refers to the storage unit 200c in which the information is set as described above, so that the per-time unit according to the model of the mobile terminal 100 connected to the in-vehicle device 200 is used. The power consumption amount p1 can be specified. In addition, the charge amount specifying unit 204 of the in-vehicle device 200 refers to the storage unit 200c in which the information is set in this manner, so that the per-unit time according to the model of the mobile terminal 100 connected to the in-vehicle device 200 Can be specified.

  When there are a plurality of combinations of the charger 300 and the cable 302 that can be used for one mobile terminal 100, charging per unit time when charging is performed using a combination that is frequently used in the vehicle. It is good to set quantity p2. Alternatively, the charge amount p2 per unit time for each combination may be set and the user may select which combination is used or may be automatically detected.

[An example of information stored in the required power storage unit 200d]
FIG. 6 is a diagram illustrating an example of information stored in the required power storage unit 200d according to the first embodiment of the present invention. As illustrated in FIG. 6, table information in which “required power” is set for each destination ID is stored in the required power storage 200d. The “required power amount” is set with a required power amount Pc, which is a remaining battery capacity required to use the mobile terminal 100 at the destination.

  The required power amount specifying unit 205 of the in-vehicle device 200 refers to the required power amount storage unit 200d in which the information is set in this way, so that the destination set in the mobile terminal 100 (received from the mobile terminal 100 is received). The required power amount Pc corresponding to the destination ID) can be specified.

  The table information stored in the required power storage 200d may be configured such that the required power Pc is set for each combination of the model ID and the destination ID of the mobile terminal 100. In this case, it is possible to specify the necessary power amount Pc necessary for using a specific model at the destination. For this reason, the user can sufficiently use the specific model at the destination even when the specific model requires a larger amount of electric power Pc than the other models.

  The table information stored in the required power storage unit 200d may store the required power Pc for each genre instead of the destination ID. In this case, the mobile terminal 100 transmits the destination ID together with information on the genre to which the destination belongs to the in-vehicle device 200, and the required power amount specifying unit 205 is based on the genre information received from the mobile terminal 100. The required power amount Pc associated with the genre can be specified by referring to the required power amount storage unit 200d.

[An example of processing by the cooperation system 10]
FIG. 7 is a flowchart illustrating an example of processing performed by the cooperation system 10 according to the first embodiment of the present invention. The process illustrated in FIG. 7 is executed, for example, when the mobile terminal 100 starts guiding the guidance route in a state where the mobile terminal 100 is wirelessly connected to the in-vehicle device 200.

  First, in the mobile terminal 100, the remaining battery level detection unit 105 detects the remaining battery level P of the mobile terminal 100 (step S702). Next, the expected travel time calculation unit 102 calculates the expected travel time t to the destination (step S704). Further, the estimated arrival time calculation unit 103 calculates the estimated arrival time tc of the destination (step S706).

  Next, the communication unit 106 extracts the model ID of the mobile terminal 100 from the model information storage unit 100d (step S708). Then, the communication unit 106 transmits the remaining battery level P, the destination ID of the destination, the estimated travel time t to the destination, the estimated arrival time tc of the destination, and the model ID of the mobile terminal 100 to the in-vehicle device 200. (Step S710).

  In the in-vehicle device 200, the communication unit 201 receives the remaining battery power P, the destination ID, the expected travel time t, the estimated arrival time tc, and the model ID transmitted from the mobile terminal 100 (step S714).

  Next, the battery remaining amount identifying unit 202 identifies the battery remaining amount P received in step S714 as the current battery remaining amount Pa of the mobile terminal 100 (step S716). Further, the power consumption amount specifying unit 203 refers to the storage unit 200c and specifies the power consumption amount p1 per unit time associated with the model ID received in step S714 (step S718).

  Further, the charge amount specifying unit 204 refers to the storage unit 200c and specifies the charge amount p2 per unit time associated with the model ID received in step S714 (step S720). Also, the required power amount specifying unit 205 refers to the required power amount storage unit 200d and specifies the required power amount Pc associated with the destination ID received in step S714 (step S722).

  Further, the predicted travel time specifying unit 206 specifies the predicted travel time t received in step S714 as the predicted travel time t to the destination (step S724). Further, the estimated arrival time specifying unit 207 specifies the estimated arrival time tc received in step S714 as the estimated arrival time tc of the destination (step S726).

  Then, the charge start time calculation unit 208 uses the remaining battery amount Pa, the power consumption amount p1 per unit time, the charge amount p2 per unit time, the required power amount Pc, and the estimated travel time t, and the above formula (1). Thus, the charging time t2 is calculated (step S728). Further, the charging start time calculation unit 208 calculates the charging start time tb by the above formula (2) using the estimated arrival time tc and the charging time t2 calculated in step S728 (step S730). And the alerting | reporting part 209 alert | reports the charge start time tb calculated by step S730 (step S732), and a series of processes shown in FIG. 7 are complete | finished.

  As described above, according to the cooperation system 10 according to the first embodiment of the present invention, if charging of the mobile terminal 100 is started at the charging start time tb notified by the in-vehicle device 200, the destination is reached. Thus, the remaining battery level P of the mobile terminal 100 can be set to the necessary power amount Pc required at the destination. For this reason, according to the cooperation system 10 which concerns on 1st Embodiment of this invention, the charge of the portable terminal 100 can be started at a suitable timing, and a user fully uses the portable terminal 100 in the destination. Will be able to.

  In particular, according to the cooperation system 10 according to the first embodiment of the present invention, the power consumption amount p1 per unit time according to the model of the mobile terminal 100, and the charge amount p2 per unit time according to the model of the mobile terminal 100. And the charging start time tb is calculated using the required electric energy Pc according to the destination. For this reason, it is possible to calculate an appropriate charging start time tb according to the model and destination of the mobile terminal 100.

[Second Embodiment]
Next, a second embodiment of the present invention will be described. Hereinafter, with respect to the in-vehicle device 200 ′ according to the second embodiment, changes from the in-vehicle device 200 of the first embodiment will be described. FIG. 8 is a block diagram illustrating a functional configuration example of the in-vehicle device 200 ′ according to the second embodiment of the present invention. The in-vehicle device 200 ′ illustrated in FIG. 8 is different from the in-vehicle device 200 illustrated in FIG. 4 in that it further includes a power consumption amount registration unit 210, a charge amount registration unit 211, and a necessary power amount registration unit 212.

  The power consumption amount registration unit 210 registers the power consumption amount p1 per unit time detected when the mobile terminal 100 is used in the past in the storage unit 200c for each model. For example, the power consumption registration unit 210 uses the battery remaining amount P received at least twice or more from the mobile terminal 100 when the mobile terminal 100 is in use and the power consumption per unit time based on the reception interval time. p1 is calculated. The power consumption amount registration unit 210 may periodically update the power consumption amount p1 per unit time stored in the storage unit 200c by periodically executing such processing.

  The charge amount registration unit 211 registers the charge amount p2 per unit time detected when the mobile terminal 100 is charged in the past in the storage unit 200c for each model. For example, the charge amount registration unit 211 charges the charge amount per unit time based on the remaining battery power P received from the portable terminal 100 at least twice when the portable terminal 100 is charged and the reception interval time. p2 is calculated. The charge amount registration unit 211 may periodically update the charge amount p2 per unit time stored in the storage unit 200c by periodically executing such processing.

  In addition, when the information (the power consumption p1 per unit time and the charge p2 per unit time) corresponding to the model ID received by the communication unit 201 is not registered in the storage unit 200c, the power consumption specifying unit 203 The predetermined power consumption amount may be specified as the power consumption amount p1 per unit time, and the charge amount specifying unit 204 may specify the predetermined charge amount as the charge amount p2 per unit time.

  The required power amount registration unit 212 registers the power amount that the mobile terminal 100 has used in the past in the required power amount storage unit 200d as the required power amount Pc of the destination. For example, the required power amount registration unit 212 may include the remaining battery level P received from the mobile terminal 100 immediately before the wireless communication connection between the mobile terminal 100 and the in-vehicle device 200 is disconnected at the destination, the mobile terminal 100, and the in-vehicle device. The difference value from the remaining battery level P received from the portable terminal 100 immediately after the wireless communication connection with the 200 is reconnected is registered in the required power storage unit 200d as the required power amount Pc of the destination. The required power amount registration unit 212 may sequentially update the required power amount Pc stored in the required power amount storage unit 200d by executing such processing each time the user visits the destination. . For example, the required power amount registration unit 212 calculates a required power amount Pc for a destination visited multiple times by calculating a past average value or a value obtained by adding a predetermined multiple of a standard deviation to a past average value, and sequentially updating it. . Alternatively, the required power amount registration unit 212 sequentially updates the required power amount Pc for the destination visited multiple times with the past maximum value and the latest value.

In addition, it is preferable that the required power amount registration unit 212 does not perform registration in the required power amount storage unit 200d when any of the following applies. This is because an appropriate value cannot be obtained as the required power amount Pc in these cases.
When the reconnection between the mobile terminal 100 and the in-vehicle device 200 is a short time (for example, less than 5 minutes).
When the remaining battery level of the mobile terminal 100 is increased when the mobile terminal 100 and the in-vehicle device 200 are reconnected (when the mobile terminal 100 is charged at the destination).
When the mobile terminal 100 and the in-vehicle device 200 are reconnected after moving from the destination.

  When the required power amount Pc corresponding to the destination ID received by the communication unit 201 is not registered in the required power amount storage unit 200d, the required power amount specifying unit 205 is configured to store a predetermined required power amount (preferably, The required power amount set in advance for the genre to which the destination belongs may be specified as the required power amount Pc. Alternatively, the required power amount specifying unit 205 causes the user to input the expected usage time at the destination, and calculates the required power amount Pc based on the predicted usage time and the power consumption amount p1 per unit time. It may be.

  According to the second embodiment, the power consumption amount p1 per unit time of the mobile terminal 100, the charge amount p2 per unit time of the mobile terminal 100, and the required power amount Pc of the mobile terminal 100 at the destination are measured. These values are used to calculate the subsequent charging start time tb. For this reason, the charging start time tb can be calculated reflecting the current state (for example, the deterioration state) of the battery 100a of the mobile terminal 100. Therefore, the accuracy of the charging start time tb can be increased.

  Further, according to the second embodiment, even if the model is not initially registered with the information (power consumption p1 per unit time and charge p2 per unit time) in the storage unit 200c, the power consumption When the registration unit 210 and the charge amount registration unit 211 register information in the storage unit 200c, the charge start time tb can be calculated.

  In addition, according to the second embodiment, the required power amount registration unit 212 transmits information to the required power even when the information (the required power amount Pc) is not initially registered in the required power amount storage unit 200d. By registering in the amount registration unit 212, the charging start time tb can be calculated.

  In each of the above embodiments, the charging start time tb is calculated so that the remaining battery level of the mobile terminal 100 when it reaches the destination is equal to the required power amount Pc. Not limited to this, the charging start time tb may be calculated so that the remaining battery level of the mobile terminal 100 when it arrives at the destination is equal to or greater than the required power amount Pc.

  For example, a predetermined power amount is added to the required power amount Pc within a range not exceeding the full charge capacity of the battery 100a to obtain a required power amount Pc ′, and the charge start time tb is calculated using the required power amount Pc ′. You may make it do. In this case, by starting charging of the mobile terminal 100 at the calculated charging start time tb, the remaining battery level of the mobile terminal 100 when arriving at the destination can be set as the required power amount Pc ′. For this reason, the user can use the portable terminal 100 more fully at the destination.

  Alternatively, after the charge start time tb is calculated, the charge start time tb 'that is a predetermined time earlier than the charge start time tb may be notified. In this case, since the charging time t2 becomes longer by starting the charging of the mobile terminal 100 at the charging start time tb ′ than when starting the charging at the charging start time tb, the mobile terminal 100 when the mobile terminal 100 arrives at the destination The battery remaining amount can be made larger than the required power amount Pc. For this reason, the user can use the portable terminal 100 more fully at the destination.

  Further, in each of the above embodiments, the in-vehicle devices 200 and 200 ′ are configured to calculate the charging start time tb, but the present invention is not limited to this. For example, the functions (see FIGS. 4 and 8) of the in-vehicle devices 200 and 200 ′ may be provided in the mobile terminal 100 so that the mobile terminal 100 calculates the charging start time tb by itself.

[Example of additional functions (first example)]
FIG. 9 is a diagram for explaining an example (first example) of an additional function of the in-vehicle devices 200 and 200 ′ according to each embodiment of the present invention. As shown in FIG. 9, when the required power amount Pc is 80% or more (90% in FIG. 9), the required power amount Pc is applied to the above formula (1) and the above formula (2). Thus, when the charging start time tb is obtained, the actual battery remaining amount P at the estimated arrival time tc may not be less than the required power amount Pc. This is because, as indicated by the dotted line in FIG. 9, the increase in the remaining battery level P when the remaining battery level P is 80% or more becomes non-linear.

  Therefore, in each of the above embodiments, when the required power amount Pc is a value of 80% or more, as shown by an arrow C in FIG. 9, a value obtained by increasing the required power amount Pc to 100% is required power amount Pc ′. Alternatively, the charging start time tb '' may be calculated and the charging start time tb '' may be notified. Alternatively, as shown by an arrow D in FIG. 9, the charging start time tb ″ may be calculated by subtracting a predetermined time from the charging start time tb, and the charging start time tb ″ may be notified. In any case, since the charging time t2 increases, the shortage of the actual battery remaining amount P at the estimated arrival time tc can be compensated.

[Example of additional functions (second example)]
FIG. 10 is a diagram for explaining an example (second example) of an additional function of the in-vehicle devices 200 and 200 ′ according to each embodiment of the present invention. In each of the above embodiments, as shown in FIG. 10, when the remaining battery level P of the mobile terminal 100 falls below a predetermined threshold th by the calculated charging start time tb, for example, td = The time td when the remaining battery level P of the portable terminal 100 reaches the threshold th may be calculated by ta + ((Pa−th) / p1), and the time td may be notified.

  In each of the above embodiments, when the destination is not set in the mobile terminal 100, either the mobile terminal 100 or the in-vehicle device 200 is a technology known in the art (for example, International Publication No. 2006/040901). As disclosed, a destination and a travel time t to the destination may be estimated using a method of predicting a destination based on a movement history of an article with a low frequency of possession. .

  In addition, each of the above-described embodiments is merely an example of a specific example for carrying out the present invention, and the technical scope of the present invention should not be construed in a limited manner. That is, the present invention can be implemented in various forms without departing from the gist or the main features thereof.

DESCRIPTION OF SYMBOLS 10 Cooperation system 100 Portable terminal 100a Map data storage part 100b Own vehicle position detection apparatus 100c Battery 100d Model information storage part 101 Route search part 102 Expected travel time calculation part 103 Expected arrival time calculation part 104 Route guidance part 105 Battery residual quantity detection part DESCRIPTION OF SYMBOLS 106 Communication part 200,200 'Car-mounted apparatus 200a Display 200b Speaker 200c Memory | storage part 200d Power consumption memory | storage part 201 Communication part 202 Battery residual quantity specific | specification part 203 Power consumption amount specific | specification part 204 Charge amount specific | specification part 205 Required electric energy specific part 206 Prediction Travel time specifying unit 207 Expected arrival time specifying unit 208 Charging start time calculating unit 209 Notifying unit 210 Power consumption amount registering unit 211 Charge amount registering unit 212 Required power amount registering unit 300 Charger 302 Charging cable

Claims (9)

An in-vehicle device to which a portable terminal is connected by wireless communication,
A battery remaining amount identifying unit for identifying a current battery remaining amount of the mobile terminal;
A power consumption specifying unit for specifying the power consumption per unit time of the mobile terminal;
A charge amount identifying unit for identifying a charge amount per unit time of the mobile terminal;
A travel time identifying unit that identifies the expected travel time to the destination;
A required power amount specifying unit for specifying a required power amount that is a remaining battery capacity required to use the mobile terminal at the destination;
Based on the current remaining battery level, the power consumption per unit time, the charge amount per unit time, the expected travel time, and the required power amount, when the destination is reached A charge start time calculation unit for calculating a charge start time of the mobile terminal so that a remaining battery amount is equal to or greater than the required power amount;
An in-vehicle device comprising: a notifying unit that notifies the charging start time calculated by the charging start time calculating unit. An estimated arrival time specifying unit for specifying an estimated arrival time of the destination;
The charging start time calculation unit
The current battery remaining amount is Pa, the power consumption per unit time is p1, the charge amount per unit time is p2, the expected travel time is t, the required power amount is Pc, If the estimated arrival time at the destination is tc,
The charging time t2 of the mobile terminal is calculated by the following formula (1),
t2 = (Pc−Pa + p1 × t) / (p1 + p2) (1)
The charging start time tb is calculated by the following mathematical formula (2). Tb = tc−t2 (2)
The in-vehicle device according to claim 1. A current time specifying unit for specifying the current time;
The charging start time calculation unit
The current battery remaining amount is Pa, the power consumption per unit time is p1, the charge amount per unit time is p2, the expected travel time is t, the required power amount is Pc, If the current time is ta,
From the current time ta, a time t1 that can be used without charging the mobile terminal is calculated from the following formula (3).
t1 = (Pa−Pc + p2 × t) / (p1 + p2) (3)
The charging start time tb is calculated by the following mathematical formula (4). Tb = ta + t1 (4)
The in-vehicle device according to claim 1. A storage unit that stores the power consumption per unit time and the charge amount per unit time for each model of the mobile terminal;
The power consumption amount specifying unit specifies the power consumption amount per unit time according to the model of the mobile terminal connected to the in-vehicle device by referring to the storage unit,
The charge amount specifying unit specifies the charge amount per unit time according to a model of the mobile terminal connected to the in-vehicle device by referring to the storage unit. The in-vehicle device according to any one of items 1 to 3. A power consumption amount registration unit that registers the power consumption amount per unit time detected when the mobile terminal is used in the past in the storage unit;
The in-vehicle device according to claim 4, further comprising: a charge amount registration unit that registers the charge amount per unit time detected when the mobile terminal is charged in the past in the storage unit. Further comprising a required power storage unit that stores the required power for each destination;
The said required electric energy specific | specification part specifies the said required electric energy according to the said destination with reference to the said required electric energy memory | storage part. The Claim 1 characterized by the above-mentioned. In-vehicle device. The power consumption registration part which registers the electric energy which the said portable terminal used in the said destination in the past in the said required electric energy memory | storage part as the said required electric energy of the destination is further provided. The in-vehicle device described in 1. A cooperation system in which a mobile terminal and an in-vehicle device are connected by wireless communication,
A battery remaining amount identifying unit for identifying a current battery remaining amount of the mobile terminal;
A power consumption specifying unit for specifying the power consumption per unit time of the mobile terminal;
A charge amount identifying unit for identifying a charge amount per unit time of the mobile terminal;
A travel time identifying unit that identifies the expected travel time to the destination;
A required power amount specifying unit for specifying a required power amount that is a remaining battery capacity required to use the mobile terminal at the destination;
Based on the current remaining battery level, the power consumption per unit time, the charge amount per unit time, the expected travel time, and the required power amount, when the destination is reached A charge start time calculation unit for calculating a charge start time of the mobile terminal so that a remaining battery amount is equal to or greater than the required power amount;
And a notifying unit for notifying the charging start time calculated by the charging start time calculating unit. A charging start time notification method used in a cooperative system in which a mobile terminal and an in-vehicle device are connected by wireless communication,
A battery remaining amount identifying unit that identifies a current battery remaining amount of the mobile terminal,
The power consumption specifying unit of the in-vehicle device specifies a power consumption per unit time of the mobile terminal, and a power consumption specifying step,
The charge amount specifying unit of the in-vehicle device specifies a charge amount per unit time of the mobile terminal, and a charge amount specifying step,
The travel time specifying unit of the in-vehicle device specifies a predicted travel time to the destination, and a travel time specifying step,
The required power amount specifying unit of the in-vehicle device specifies a required power amount that is a remaining amount of battery required to use the mobile terminal at the destination, and a required power amount specifying step;
The charge start time calculation unit of the in-vehicle device includes the current battery remaining amount, the power consumption per unit time, the charge amount per unit time, the estimated travel time, and the required power amount. Based on the charging start time calculating step of calculating the charging start time of the mobile terminal so that the remaining battery level when reaching the destination is equal to or greater than the required power amount,
A charging start time notifying method comprising: a notifying step for notifying the charging start time calculated in the charging start time calculating step.

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