On-vehicle device

Abstract

To provide an on-vehicle device for presenting route information from a departure place to a destination including precise charge timing to a user by considering deterioration of electricity costs because of traveling while loading a loading object on a roof carrier or the like.SOLUTION: An on-vehicle device 1 is composed of: a load weight information acquisition section 11 for acquiring a load weight of a loading object; a load information acquisition section 12 for acquiring a load size and a load shape from image information; an aerodynamic analysis section 13 for performing an aerodynamic analysis on the basis of acquired load information; an electricity cost calculation section 14 for calculating electricity costs on the basis of the load weight and an analysis result of the aerodynamic analysis section 13; and a route information retrieval section 15 for retrieving route information including charge timing from a departure place to a destination on the basis of a current charge amount and a calculation result of the electricity cost calculation section 14.SELECTED DRAWING: Figure 6

Description

[Technical field]

[0001] The present invention relates to an in-vehicle device. [Background technology]

[0002] 2. Description of the Related Art In recent years, from the viewpoint of environmental protection, electric vehicles and the like equipped with storage batteries that can be charged from an external power source have become widespread.

[0003] Generally, in order to enjoy long-distance driving in an electric vehicle or the like, it is necessary to charge the storage battery at a charging facility located within the driving range so that the storage battery does not become completely discharged.

[0004] For example, one such technique is disclosed in which route information including charging timing from a departure point to a destination is searched for based on the vehicle's current charge level and power efficiency, and route guidance is provided (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2013-152149 A Summary of the Invention [Problem to be solved by the invention]

[0006] In general, the fuel economy of an electric vehicle deteriorates when the vehicle is traveling with a load on a roof carrier or the like due to increased air resistance and an increase in the load weight. However, the technology described in Patent Document 1 does not take into account the deterioration in electricity efficiency caused by driving with cargo on a roof carrier or the like, so there was a problem that the user had to charge the storage battery at a time different from the charging timing presented at the start of the drive.

[0007] Therefore, the present invention has been made in consideration of the above-mentioned problems, and aims to provide an in-vehicle device that presents a user with route information from a departure point to a destination, including highly accurate charging timing, by taking into account the deterioration of electricity consumption caused by traveling with cargo on a roof carrier or the like. [Means for solving the problem]

[0008] Form 1: One or more embodiments of the present invention propose an in-vehicle device that is provided on a roof rail or roof carrier and includes a load weight information acquisition unit that acquires the load weight of a load, a load information acquisition unit that acquires the load size and load shape from image information, an aerodynamic analysis unit that performs aerodynamic analysis based on the acquired load information, an electricity consumption calculation unit that calculates electricity consumption based on the load weight and the analysis result of the aerodynamic analysis unit, and a route information search unit that searches for route information including charging timing from a departure point to a destination based on a current charge amount and the calculation result of the electricity consumption calculation unit.

[0009] Form 6: One or more embodiments of the present invention propose an in-vehicle device comprising one or more processors, one or more memories communicatively connected to the one or more processors, and a load weight information acquisition unit provided on a roof rail or roof carrier and acquiring the load weight of a load, wherein the one or more processors include a load information acquisition unit that acquires a load size and load shape from image information, an aerodynamic analysis unit that performs aerodynamic analysis based on the acquired load information, an electricity consumption calculation unit that calculates electricity consumption based on the load weight and the analysis result of the aerodynamic analysis unit, and a route information search unit that searches for route information including charging timing from a departure point to a destination based on a current charge amount and the calculation result of the electricity consumption calculation unit. Effect of the Invention

[0010] According to one or more embodiments of the present invention, by taking into account the deterioration in electricity consumption caused by traveling with cargo on a roof carrier or the like, it is possible to present to the user route information from the departure point to the destination, including highly accurate charging timing. [Brief description of the drawings]

[0011] [Figure 1] 1 is a diagram showing a configuration of an in-vehicle device according to a first embodiment of the present invention. [Diagram 2] 1 is a diagram showing a configuration of a processor of an in-vehicle device according to a first embodiment of the present invention. [Diagram 3] 3 is a diagram showing a frontal projected area and a side projected area calculated by the in-vehicle device according to the first embodiment of the present invention. FIG. [Figure 4] 3 is a diagram showing preset information stored in a memory of the in-vehicle device according to the first embodiment of the present invention. FIG. [Diagram 5] 3 is a diagram showing preset information stored in a memory of the in-vehicle device according to the first embodiment of the present invention. FIG. [Figure 6] FIG. 2 is a diagram showing a route information search process flow of the in-vehicle device according to the first embodiment of the present invention. [Figure 7] FIG. 4 is a diagram showing a display processing flow of an error message in the in-car device according to the first embodiment of the present invention. [Figure 8] FIG. 11 is a diagram showing a configuration of an in-vehicle device according to a second embodiment of the present invention. [Figure 9] FIG. 11 is a diagram showing a configuration of a processor of an in-vehicle device according to a second embodiment of the present invention. [Figure 10] FIG. 11 is a diagram showing a route information search process flow of an in-vehicle device according to a second embodiment of the present invention. [Figure 11] FIG. 11 is a diagram showing a configuration of an in-vehicle device according to a third embodiment of the present invention. [Figure 12] FIG. 11 is a diagram showing a configuration of a processor of an in-vehicle device according to a third embodiment of the present invention. [Figure 13]FIG. 11 is a diagram showing a configuration of a mobile terminal that communicates with an in-car device according to a third embodiment of the present invention. [Figure 14] FIG. 11 is a diagram showing a route information search process flow of an in-vehicle device according to a third embodiment of the present invention. [Figure 15] FIG. 13 is a diagram showing a configuration of an in-vehicle device according to a fourth embodiment of the present invention. [Figure 16] FIG. 13 is a diagram showing a configuration of a processor of an in-vehicle device according to a fourth embodiment of the present invention. [Figure 17] FIG. 13 is a diagram showing a display example of an in-car device according to a fourth embodiment of the present invention. [Figure 18] FIG. 13 is a diagram showing a display processing flow of a loading method of an in-vehicle device according to a fourth embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] Hereinafter, an embodiment of the present invention will be described with reference to FIGS.

[0013] <First embodiment> An in-vehicle device 1 according to this embodiment will be described with reference to FIGS.

[0014] <Configuration of In-Vehicle Device 1> As shown in FIG. 1, the in-car device 1 according to this embodiment includes a processor 10, a memory 20, and a display unit 30.

[0015] In this embodiment, the processor 10 calculates the electricity consumption of the vehicle based on information about cargo loaded on the roof rail or roof carrier of the vehicle equipped with the on-vehicle device 1. In this embodiment, the processor 10 searches for route information to the destination, including charging timing, based on, for example, the calculated electricity consumption and information on the departure point and destination acquired from the navigation device 100. In this embodiment, the processor 10 transmits the searched route information to the navigation device 100 . In this embodiment, when the navigation device 100 receives route information from the processor 10, the navigation device 100 executes route guidance from the departure point to the destination and guidance regarding charging based on the received route information. In this embodiment, for example, when the loading size or loading shape of the load is inappropriate, the processor 10 causes the display unit 30, which will be described later, to display an error message. The configuration of the processor 10 will be described later.

[0016] The memory 20 includes a read only memory (ROM) and a random access memory (RAM), neither of which are shown. The memory 20 stores, for example, a control program and various data received from the processor 10. In this embodiment, the memory 20 pre-stores, for example, map information and location information of charging facilities. In this embodiment, the memory 20 stores in advance preset information that the processor 10 refers to when determining the deterioration level of electricity efficiency due to the load, for example. In this embodiment, the memory 20 stores in advance, for example, preset information that the processor 10 refers to when calculating the electricity consumption. The above preset information will be described later.

[0017] The display unit 30 is, for example, a display panel such as a liquid crystal display, and displays the information received from the processor 10. The display unit 30 may be, for example, a display panel of the navigation device 100 .

[0018] <Processor 10 Configuration> As shown in FIG. 2, the processor 10 is configured to include a loading weight information acquisition unit 11, a loading information acquisition unit 12, an aerodynamic analysis unit 13, an electricity consumption calculation unit 14, a route information search unit 15, and a control unit 16. Each component of the processor 10 and the memory 20 transmit and receive various types of information via a bus line BL.

[0019] The load weight information acquisition unit 11 acquires the load weight of an object loaded on a roof rail or a roof carrier of a vehicle equipped with the on-vehicle device 1 according to this embodiment. The load weight information acquisition unit 11 acquires the load weight of the load based on the sensor output of a weight sensor 200 disposed on, for example, a roof rail or a roof carrier. The load weight information acquiring unit 11 transmits the acquired load weight to a control unit 16, which will be described later, via the bus line BL.

[0020] The loading information acquisition unit 12 acquires the loading size and loading shape from the image information. The loading information acquisition unit 12 acquires information on the loading size and loading shape of the loaded object from image information of the loaded object captured by at least one imaging device 300 fixed to the vehicle, for example. The loading information acquisition unit 12 may acquire the loading size and loading shape of the loaded object from image information of the loaded object captured by a mobile terminal owned by the user, for example.

[0021] The loading information acquisition unit 12 acquires information on the fixed state of the loaded items from, for example, image information. The loading information acquisition unit 12 acquires, for example, information on whether or not the load is fixed or fastened to a roof rail or a roof carrier from the image information. The load information acquiring unit 12 acquires, for example, information on whether or not the load includes dangerous objects (for example, tools with sharp edges, fuel tanks, etc.) from the image information. Hereinafter, the information acquired by the loading information acquisition unit 12 will be collectively referred to as "loading information." The loading information acquiring unit 12 transmits the acquired loading information to a control unit 16, which will be described later, via the bus line BL.

[0022] The aerodynamic analysis unit 13 performs an aerodynamic analysis based on the loading information acquired by the loading information acquisition unit 12 . An example of an aerodynamic analysis will be described below. In this embodiment, the aerodynamic analysis unit 13 calculates, for example, a frontal projected area Sz and a side projected area Ss of the loaded object as shown in FIG. In this embodiment, the aerodynamic analysis unit 13 determines the deterioration level of the electricity efficiency based on, for example, the calculated frontal projected area Sz and side projected area Ss. The aerodynamic analysis unit 13 determines the deterioration level of the electricity consumption based on preset information as shown in FIG. The preset information includes a correlation between the frontal projection area Sz and the deterioration level of the electricity consumption. The preset information includes a correlation between the side projection area Ss and an adjustment value for the deterioration level of the electricity efficiency. The aerodynamic analysis unit 13 determines the deterioration level of the electricity efficiency based on the frontal projected area Sz, and adjusts the determined deterioration level of the electricity efficiency based on the side projected area Ss. When the side projected area Ss is less than a predetermined area, the aerodynamic analysis unit 13 does not adjust the deterioration level of the electricity efficiency determined based on the front projected area Sz. When the side projected area Ss is equal to or larger than a predetermined area, the aerodynamic analysis unit 13 adjusts the deterioration level of the power efficiency determined based on the front projected area Sz by increasing the deterioration level by one level. The aerodynamic analysis unit 13 calculates, for example, the frontal projection area Sz as A(m 2 ) and the side projection area Ss is E(m 2 ), the deterioration level of electricity efficiency is determined to be Level 1. The aerodynamic analysis unit 13 calculates, for example, the frontal projection area Sz as A(m 2 ) and the side projection area Ss is E(m 2 ) or higher, the deterioration level of electricity efficiency is determined to be Level 2. The aerodynamic analysis unit 13 transmits the deterioration level of the electricity consumption to the control unit 16, which will be described later, via the bus line BL.

[0023] When the aerodynamic analysis unit 13 determines that the loading size or loading shape is inappropriate, it transmits the analysis result indicating that it is inappropriate to the control unit 16 described later. For example, when the calculated frontal projection area Sz is larger than a predetermined area, the aerodynamic analysis unit 13 transmits an analysis result to the control unit 16 described later indicating that the frontal projection area is inappropriate. For example, when the calculated side projected area Ss is larger than a predetermined area, the aerodynamic analysis unit 13 transmits an analysis result to the control unit 16 (described later) indicating that the side projected area is inappropriate. For example, when the aerodynamic analysis unit 13 determines that the height of the load is higher than a predetermined height based on the loading information, it transmits an analysis result indicating that the height of the load is inappropriate to the control unit 16 described later.

[0024] The electricity cost calculation unit 14 calculates an electricity cost based on the load weight of the loaded object acquired by the load weight information acquisition unit 11 and the analysis result of the aerodynamic analysis unit 13. An example of a method for calculating electricity costs will be described below. The electricity efficiency calculation unit 14 acquires, from the memory 20, preset information for calculating the electricity efficiency, such as that shown in FIG. The preset information includes, for example, information showing the correlation between the analysis results (level of deterioration in electricity consumption) of the aerodynamic analysis unit 13 and the rate of deterioration in electricity consumption (α1 to α5), information on the standard electricity consumption of the vehicle (Xkm / kwh), and information on the rate of deterioration in electricity consumption per load weight (Y% / kg). The standard electricity consumption is, for example, an electricity consumption in a Worldwide harmonized Light duty driving Test Cycle (WLTC) mode. Electricity consumption calculation unit 14 determines the rate of deterioration of electricity consumption due to an increase in aerodynamic resistance to be one of α1 to α5, based on, for example, the analysis result (level of deterioration of electricity consumption) of aerodynamic analysis unit 13 and the acquired preset information. The electricity cost calculation unit 14 calculates the deterioration rate β of electricity cost due to the load weight based on, for example, the electricity cost deterioration rate per load weight (Y % / kg) and the load weight of the load acquired by the load weight information acquisition unit 11. For example, electricity efficiency calculation unit 14 determines the electricity efficiency deterioration rate γ to be the sum of the electricity efficiency deterioration rate (α1 to α5) due to an increase in aerodynamic resistance and the electricity efficiency deterioration rate β due to the load weight. The electricity efficiency calculation unit 14 calculates the electricity efficiency of the vehicle based on, for example, the standard electricity efficiency obtained from the preset information and the deterioration rate γ of the electricity efficiency. The electricity consumption calculation unit 14 transmits the calculation result to the control unit 16, which will be described later, via the bus line BL.

[0025] Based on the current charged amount and the calculation result of the electricity cost calculation unit 14, the route information search unit 15 searches for route information including charging timing from the departure point to the destination. The route information search unit 15 calculates the possible cruising distance based on, for example, information on the current remaining charge received from the control unit 16 (described later) and the electricity consumption calculated by the electricity consumption calculation unit 14 . The route information search unit 15 searches for a driving route from the departure point to a destination that has a charging facility within the cruising distance as a stopover, based on the calculated cruising distance, map information and location information of the charging facility acquired from the memory 20, and information regarding the departure point and destination received from the control unit 16 described later. The route information search unit 15 transmits the searched route information to a control unit 16, which will be described later, via the bus line BL.

[0026] The control unit 16 controls the entire in-vehicle device 1 in accordance with a control program stored in the memory 20 . In this embodiment, the control unit 16 transmits an instruction to acquire the load weight of the loaded object to the load weight information acquisition unit 11 via, for example, the bus line BL. In this embodiment, the control unit 16 transmits an instruction to acquire loading information to the loading information acquisition unit 12 via, for example, the bus line BL. In this embodiment, the control unit 16 transmits the loading information received from the loading information acquisition unit 12 to the aerodynamic analysis unit 13 via, for example, the bus line BL, and causes the aerodynamic analysis to be performed. In this embodiment, the control unit 16 transmits, for example, the load weight of the cargo received from the load weight information acquisition unit 11 and the analysis results of the aerodynamic analysis unit 13 to the electricity consumption calculation unit 14 via the bus line BL, and causes the electricity consumption to be calculated. In this embodiment, the control unit 16 acquires information about the departure point and destination from the navigation device 100, for example. In this embodiment, the control unit 16 acquires the current remaining charge of the storage battery from, for example, a charging control device of the storage battery (not shown). In this embodiment, the control unit 16 transmits, for example, via the bus line BL, to the route information search unit 15 the current remaining charge of the storage battery, information regarding the departure point and destination, and the calculation result of the electricity cost calculation unit 14, and causes the route information search unit 15 to search for route information. In this embodiment, the control unit 16 transmits the route information received from the route information search unit 15 to the navigation device 100. When the navigation device 100 receives route information from the control unit 16, it displays the received route information and starts route guidance from the departure point to the destination. In this embodiment, the control unit 16 executes control for the display unit 30 to display information. The control unit 16 transmits, for example, the loaded weight acquired from the loaded weight information acquisition unit 11 and the electricity consumption calculated by the electricity consumption calculation unit 14 to the display unit 30.

[0027] In this embodiment, for example, based on the analysis results of the aerodynamic analysis unit 13, the control unit 16 causes the display unit 30 to display an error message when the loading size or loading shape is inappropriate. For example, when the control unit 16 receives an analysis result from the aerodynamic analysis unit 13 indicating that the frontal projection area is inappropriate, the control unit 16 transmits an error message to the display unit 30, such as "The frontal projection area of ​​the load exceeds the specified value. If the vehicle is driven in this condition, there is a risk that the load will collapse." For example, when the control unit 16 receives an analysis result from the aerodynamic analysis unit 13 indicating that the lateral projection area is inappropriate, the control unit 16 transmits an error message to the display unit 30, such as "The lateral projection area of ​​the load exceeds the specified value. If the vehicle is driven in this condition, there is a risk of the vehicle overturning." For example, when the control unit 16 receives an analysis result from the aerodynamic analysis unit 13 indicating that the height of the load is inappropriate, it sends an error message to the display unit 30, such as "The height of the load exceeds the specified value. If the vehicle is driven in this condition, there is a risk of the vehicle overturning." When displaying the error message, the control unit 16 may also cause the display unit 30 to display image information indicating an inappropriate loading state.

[0028] The control unit 16 may cause the display unit 30 to display an error message based on the information received from the loaded weight information acquisition unit 11 or the loaded information acquisition unit 12. If the load weight of the cargo acquired from the load weight information acquisition unit 11 is heavier than a predetermined weight, the control unit 16 sends an error message to the display unit 30, such as "The weight of the cargo exceeds the preset value. Please reduce the cargo." When the control unit 16 receives information from the loading information acquisition unit 12 that there is unsecured cargo, it sends an error message to the display unit 30, such as "There is unsecured cargo. Please secure it securely." When the control unit 16 receives information from the loading information acquisition unit 12 that the load contains dangerous objects, it sends an error message to the display unit 30, such as "Dangerous knives are loaded. It is recommended that you load them inside the vehicle."

[0029] <Route Information Search Process of Vehicle-Mounted Device 1> A process of searching for route information including charging timing from a departure point to a destination in the in-car device 1 according to this embodiment will be described with reference to FIG.

[0030] The control unit 16 transmits an instruction to the load weight information acquisition unit 11 to acquire the load weight of the loaded object, and causes the load weight information acquisition unit 11 to acquire the load weight of the loaded object (step S110).

[0031] The control unit 16 transmits an instruction to the loading information acquisition unit 12 to acquire the loading information, and causes the loading information acquisition unit 12 to acquire the loading information (step S120).

[0032] The control unit 16 transmits the loading information acquired in step S120 to the aerodynamic analysis unit 13, and causes the aerodynamic analysis to be performed (step S130).

[0033] The control unit 16 transmits the loaded weight acquired in step S110 and the aerodynamic analysis result acquired in step S130 to the electricity consumption calculation unit 14, and causes the electricity consumption calculation unit 14 to calculate the electricity consumption (step S140).

[0034] The control unit 16 acquires information relating to the departure point and destination from the navigation device 100 (step S150).

[0035] The control unit 16 transmits the electricity cost obtained in step S140 and the information relating to the departure point and destination obtained in step S150 to the route information searching unit 15, causing it to search for route information (step S160).

[0036] The control unit 16 transmits the route information found in step S160 to the navigation device 100 (step S170), and ends the process.

[0037] <Display process of error message of in-vehicle device 1> The error message display process in the in-car device 1 according to this embodiment will be described with reference to FIG.

[0038] The control unit 16 determines whether or not an analysis result indicating that the loading size or loading shape is inappropriate has been received from the aerodynamic analysis unit 13 (step S210). The control unit 16 determines whether or not an analysis result has been received from the aerodynamic analysis unit 13 indicating that any one of the frontal projected area, the side projected area, or the height of the load is inappropriate, for example. When the control unit 16 determines that an analysis result indicating that the loading size or loading shape is inappropriate has not been received from the aerodynamic analysis unit 13 ("NO" in step S210), the control unit 16 shifts the process to step S230. When the control unit 16 determines that an analysis result indicating that the loading size or loading shape is inappropriate has been received from the aerodynamic analysis unit 13 ("YES" in step S210), it causes the display unit 30 to display an error message corresponding to the received analysis result (step S220), and transitions to step S230.

[0039] The control unit 16 determines whether or not the load weight of the loaded object acquired from the load weight information acquisition unit 11 is heavier than a predetermined weight (step S230). When the control unit 16 determines that the load weight of the loaded object acquired from the load weight information acquisition unit 11 is lighter than the predetermined weight ("NO" in step S230), it shifts the process to step S250. When the control unit 16 determines that the load weight of the cargo acquired from the load weight information acquisition unit 11 is heavier than a predetermined weight ("YES" in step S230), it causes an error message to be displayed on the display unit 30 (step S240) and transitions the process to step S250.

[0040] The control unit 16 determines whether or not information indicating that there is an unsecured load has been received from the load information acquisition unit 12 (step S250). When the control unit 16 determines that information indicating that there is an unsecured load has not been received from the loading information acquisition unit 12 ("NO" in step S250), the control unit 16 shifts the process to step S270. When the control unit 16 determines that information has been received from the loading information acquisition unit 12 indicating that there is unsecured loading ("YES" in step S250), it causes an error message to be displayed on the display unit 30 (step S260) and transitions to step S270.

[0041] The control unit 16 determines whether or not information indicating that the load contains dangerous goods has been received from the load information acquisition unit 12 (step S270). When the control unit 16 determines that information indicating that dangerous goods are contained in the load has not been received from the load information acquisition unit 12 ("NO" in step S270), it ends the process. When the control unit 16 determines that information has been received from the loading information acquisition unit 12 indicating that the load contains hazardous materials ("YES" in step S270), it causes an error message to be displayed on the display unit 30 (step S280) and terminates the processing.

[0042] <Actions and Effects> As described above, the vehicle-mounted device 1 of this embodiment includes a load weight information acquisition unit 11 that acquires the load weight of the cargo, a load information acquisition unit 12 that acquires the load size and load shape from image information, an aerodynamic analysis unit 13 that performs aerodynamic analysis based on the acquired load information, an electricity consumption calculation unit 14 that calculates electricity consumption based on the load weight and the analysis result of the aerodynamic analysis unit 13, and a route information search unit 15 that searches for route information including charging timing from the departure point to the destination based on the current charge amount and the calculation result of the electricity consumption calculation unit 14. In other words, the in-vehicle device 1 calculates the electricity consumption from the load weight of the cargo loaded on the roof rail or roof carrier of the vehicle and the size and loading shape of the cargo, and searches for route information including charging timing from the departure point to the destination based on the calculated electricity consumption. As a result, the in-vehicle device 1 calculates electricity efficiency taking into account the deterioration in electricity efficiency caused by traveling with a load, and can present the user with route information from the departure point to the destination, including highly accurate charging timings. Users will be presented with route information that includes highly accurate charging timings, allowing them to drive to their destination safely and stress-free.

[0043] The aerodynamic analysis unit 13 of the on-vehicle device 1 according to this embodiment determines the deterioration level of the electricity efficiency based on, for example, the frontal projected area Sz and the side projected area Ss of the load. That is, the aerodynamic analysis unit 13 determines the deterioration level of the power consumption taking into account the increase in air resistance due to the load. This allows the aerodynamic analysis unit 13 to determine the deterioration level of electricity consumption with high accuracy.

[0044] The electricity consumption calculation unit 14 of the in-vehicle device 1 according to this embodiment calculates electricity consumption based on the load weight of the loaded object acquired from the load weight information acquisition unit 11 and the deterioration level of electricity consumption acquired from the aerodynamic analysis unit 13. That is, electricity efficiency calculation unit 14 calculates electricity efficiency with high accuracy by taking into consideration the deterioration of electricity efficiency due to the weight of the load and the deterioration of electricity efficiency due to the increase in aerodynamic resistance of the load. This allows the user to drive to their destination safely and stress-free, as route information including highly accurate charging timings is presented to the user.

[0045] The in-vehicle device 1 according to this embodiment displays an error message on the display unit 30 when the loading size or loading shape is inappropriate based on the analysis result of the aerodynamic analysis unit 13. The lateral force that contributes to a vehicle rollover accident increases in proportion to the lateral projected area Ss of the load. Therefore, when the control unit 16 of the in-vehicle device 1 receives, for example, an analysis result from the aerodynamic analysis unit 13 indicating that the lateral projection area is inappropriate, it displays an error message on the display unit 30 to warn the driver about the risk of the vehicle rolling over. This allows the in-vehicle device 1 to prevent the occurrence of rollover accidents and the like.

[0046] When the control unit 16 of the in-vehicle device 1 in this embodiment determines, based on the loading information received from the loading information acquisition unit 12, that the height of the loaded object is higher than a predetermined height, it causes an error message to be displayed on the display unit 30. The yawing moment, which contributes to the instability of a vehicle's running, increases in proportion to the square of the height of the load. Therefore, when the control unit 16 of the in-vehicle device 1 receives, for example, an analysis result from the aerodynamic analysis unit 13 indicating that the height of the loaded object is inappropriate, it displays an error message on the display unit 30 to warn the driver about the risk of the vehicle rolling over. This allows the in-vehicle device 1 to prevent the occurrence of rollover accidents and the like.

[0047] When the control unit 16 of the vehicle-mounted device 1 according to this embodiment receives information from the loading information acquisition unit 12 indicating that there is an unsecured load, it causes the display unit 30 to display an error message. That is, when the in-vehicle device 1 detects a load that may fall during driving, it displays an error message on the display unit 30 to call attention to the load falling. This allows the in-vehicle device 1 to prevent the load from falling off while the vehicle is traveling.

[0048] When the control unit 16 of the vehicle-mounted device 1 according to this embodiment receives information from the load information acquisition unit 12 indicating that the load contains a dangerous object, the control unit 16 causes the display unit 30 to display an error message. This allows the in-vehicle device 1 to alert the user to the loading of dangerous objects.

[0049] The control unit 16 of the in-vehicle device 1 according to this embodiment causes the display unit 30 to display the rate of deterioration of electricity efficiency due to the loaded item. That is, the in-vehicle device 1 makes the user aware of the rate of deterioration of electricity efficiency before starting driving toward the destination. This allows the user to improve the deterioration rate of the vehicle's electricity consumption by, for example, reviewing the weight, size, and shape of the load.

[0050] <Second embodiment> An in-vehicle device 1A according to this embodiment will be described with reference to FIGS. In addition, since the components having the same reference numerals as those in the first embodiment have the same functions, detailed description thereof will be omitted.

[0051] <Configuration of In-Vehicle Device 1A> As shown in FIG. 8, an in-car device 1A according to this embodiment includes a processor 10A, a memory 20, a display unit 30, and a communication unit .

[0052] The communication unit 40 communicates with a mobile terminal 400 carried by a user under the control of the processor 10A. Examples of the mobile terminal 400 include a smartphone and a tablet. The communication unit 40 is, for example, a short-range wireless communication device such as Bluetooth (registered trademark), and connects to the mobile terminal 400 to transmit and receive information. The communication unit 40 transmits and receives information under the control of the processor 10A. In this embodiment, the communication unit 40 receives a loaded image of the loaded object captured by the mobile terminal 400 . In this embodiment, the communication unit 40 transmits a message to the mobile terminal 400 prompting the mobile terminal 400 to provide a loaded image.

[0053] <Processor 10A Configuration> As shown in FIG. 9, the processor 10A is configured to include a loading weight information acquisition unit 11, a loading information acquisition unit 12A, an aerodynamic analysis unit 13, an electricity consumption calculation unit 14, a route information search unit 15, a control unit 16A, and a loading image acquisition unit 17. Each component of the processor 10A and the memory 20 transmit and receive various types of information via a bus line BL.

[0054] The loading information acquiring unit 12A acquires the loading size and the loading shape from a loading image acquired by a loading image acquiring unit 17 described later. The loading information acquiring unit 12A transmits the acquired loading information to a control unit 16A, which will be described later, via the bus line BL.

[0055] The control unit 16A performs overall control of the in-vehicle device 1A in accordance with a control program stored in the memory 20. In this embodiment, the control unit 16A transmits the loading image received from the loading image acquisition unit 17 (described later) to the loading information acquisition unit 12A via, for example, the bus line BL, and causes the loading information acquisition unit 12A to acquire the loading information. In this embodiment, the control unit 16A transmits the loading information received from the loading information acquisition unit 12A to the aerodynamic analysis unit 13 via, for example, the bus line BL, and causes the aerodynamic analysis to be performed. In this embodiment, the control unit 16A transmits an instruction to acquire a loaded image from the mobile terminal 400 to the loaded image acquisition unit 17 via the bus line BL, for example. When the control unit 16A transmits an instruction to acquire a loaded image from the mobile terminal 400 to the loaded image acquisition unit 17, the control unit 16A transmits a message to the mobile terminal 400 via the communication unit 40 to prompt the provision of the loaded image. The control unit 16A sends a message such as, "The vehicle's electricity consumption may deteriorate significantly due to the influence of the cargo. In order to calculate the deterioration in electricity consumption, please take photos of the vehicle's cargo. Please take photos of the entire cargo from four directions: front, back, left, and right of the vehicle."

[0056] The loading image acquisition unit 17 acquires a loading image captured by the mobile terminal 400 . The loaded image acquisition unit 17 acquires a loaded image of the loaded object captured by the mobile terminal 400 via the communication unit 40. The loading image acquisition unit 17 transmits the acquired loading image to the control unit 16A via the bus line BL.

[0057] <Route Information Search Process of Vehicle-Mounted Device 1A> A process of searching for route information including charging timing from a departure point to a destination in the in-car device 1A according to this embodiment will be described with reference to FIG.

[0058] The control unit 16A transmits an instruction to the load weight information acquisition unit 11 to acquire the load weight of the loaded object, and causes the load weight information acquisition unit 11 to acquire the load weight of the loaded object (step S310).

[0059] The control unit 16A transmits a message prompting the provision of the loaded image to the mobile terminal 400 via the communication unit 40 (step S320).

[0060] The control unit 16A transmits an instruction to acquire a loaded image to the loaded image acquisition unit 17, and causes the loaded image of the loaded object to be acquired from the mobile terminal 400 (step S330).

[0061] The control unit 16A transmits the loading image acquired in step S330 to the loading information acquisition unit 12A, and causes the loading information to be acquired (step S340).

[0062] The control unit 16A transmits the loading information acquired in step S340 to the aerodynamic analysis unit 13, and causes the aerodynamic analysis to be performed (step S350).

[0063] Control unit 16A transmits the loaded weight acquired in step S310 and the aerodynamic analysis result acquired in step S350 to electricity consumption calculation unit 14, and causes electricity consumption calculation unit 14 to calculate electricity consumption (step S360).

[0064] The control unit 16A acquires information about the departure point and destination from the navigation device 100 (step S370).

[0065] Control unit 16A transmits the electricity cost acquired in step S360 and the information relating to the departure point and destination acquired in step S370 to route information searching unit 15, causing it to search for route information (step S380).

[0066] The control unit 16A transmits the route information found in step S380 to the navigation device 100 (step S390), and ends the process.

[0067] <Actions and Effects> As described above, the vehicle-mounted device 1A according to this embodiment includes the loading image acquisition unit 17 that captures the loading image captured by the mobile terminal 400. The loading information acquiring unit 12A acquires the loading size and loading shape from the loading image captured by the loading image acquiring unit 17. The portable terminal 400 can capture images of the loaded object at any angle and scale. In other words, when the vehicle's cargo is, for example, a boat or long pieces of lumber, there is a risk that some parts cannot be captured by the imaging device installed in the vehicle, so images of the cargo are obtained using the portable terminal 400 carried by the user. The portable terminal 400 can capture an image of, for example, a view looking down on a load, which is difficult to capture with an imaging device installed in a vehicle. This allows the vehicle-mounted device 1A to acquire loading information based on a loading image in which the entire load is covered, and therefore allows the vehicle-mounted device 1A to determine the driving stability with high accuracy.

[0068] The in-car device 1A according to this embodiment includes a communication unit 40 that communicates with a mobile terminal 400. The communication unit 40 transmits a message prompting the provision of the loading image to the mobile terminal 400 in accordance with the control of the control unit 16A. The control unit 16A sends a message such as, "The vehicle's electricity consumption may deteriorate significantly due to the influence of the cargo. In order to calculate the deterioration in electricity consumption, please take photos of the vehicle's cargo. Please take photos of the entire cargo from the front, back, left and right, and top of the vehicle." This allows the vehicle-mounted device 1A to inform the user that the electricity consumption is worsened depending on the loading method of the cargo, and therefore allows the captured loading image to be obtained from the user.

[0069] The vehicle-mounted device 1A according to this embodiment searches for route information including charging timing from the departure point to the destination based on the loaded image acquired by the mobile terminal 400. This allows the in-vehicle device 1A to present to the user route information that takes into consideration the deterioration of electricity consumption caused by traveling with a load. Users will be presented with route information that includes highly accurate charging timings, allowing them to drive to their destination safely and stress-free.

[0070] <Third embodiment> An in-vehicle device 1B according to this embodiment will be described with reference to FIGS. In addition, since the components having the same reference numerals as those in the first and second embodiments have the same functions, detailed description thereof will be omitted.

[0071] <Configuration of In-Vehicle Device 1B> As shown in FIG. 11, an in-car device 1B according to this embodiment includes a processor 10B, a memory 20, a display unit 30, and a communication unit .

[0072] In this embodiment, the processor 10B calculates the electricity consumption of the vehicle based on, for example, the load weight and the load image received from the mobile terminal 400B. In this embodiment, the processor 10B searches for route information from the departure point to the destination, including charging timing, based on the calculated electricity consumption and information on the departure point and destination acquired from the navigation device 100, for example. In this embodiment, the processor 10B transmits the searched route information to the navigation device 100. When the navigation device 100 receives the route information from the processor 10B, the navigation device 100 executes route guidance from the departure point to the destination and guidance regarding charging based on the received route information. The configuration of the processor 10B will be described later.

[0073] Mobile terminal 400B is, for example, a smartphone owned by a user, and executes an application program downloaded to the smartphone. In this embodiment, the mobile terminal 400B executes an application program for capturing and transmitting a loaded image. The user, for example, downloads in advance an application program for capturing a loaded image from a server connected to the Internet network, and stores it in the mobile terminal 400B. In this embodiment, the mobile terminal 400B starts the application program when, for example, an instruction to acquire a loading image is received from the vehicle-mounted device 1B. In this embodiment, for example, the mobile terminal 400B transmits the captured loading image to the vehicle-mounted device 1B. The configuration of mobile terminal 400B will be described later.

[0074] <Configuration of Processor 10B> As shown in FIG. 12, the processor 10B is configured to include a loading weight information acquisition unit 11, a loading information acquisition unit 12B, an aerodynamic analysis unit 13, an electricity consumption calculation unit 14, a route information search unit 15, and a control unit 16B. Each component of the processor 10B and the memory 20 transmit and receive various types of information via the bus line BL.

[0075] In this embodiment, the loading information acquisition unit 12B acquires the loading information from a loading image of the loaded items captured by the mobile terminal 400B, for example. In this embodiment, the loading information acquisition unit 12B receives, for example, a loading image captured by a mobile terminal 400B from a control unit 16B described later, and acquires loading information based on the received loading image. The loading information acquiring unit 12B transmits the acquired loading information to a control unit 16B, which will be described later, via the bus line BL.

[0076] The control unit 16B performs overall control of the in-vehicle device 1B in accordance with a control program stored in the memory 20. In this embodiment, the control unit 16B transmits, for example, via the communication unit 40, an instruction to acquire the loaded image to the mobile terminal 400B. The control unit 16B receives the loaded image from the mobile terminal 400B via the communication unit 40. In this embodiment, the control unit 16B transmits the loading image received from the mobile terminal 400B to the loading information acquisition unit 12B via the bus line BL, for example, and causes the loading information acquisition unit 12B to acquire the loading information. In this embodiment, the control unit 16B transmits the loading information received from the loading information acquisition unit 12B to the aerodynamic analysis unit 13 via, for example, the bus line BL, and causes the aerodynamic analysis to be performed. In this embodiment, the control unit 16B transmits, for example, via the bus line BL, the current remaining charge of the storage battery, information regarding the departure point and destination, and the electricity cost received from the electricity cost calculation unit 14 to the route information search unit 15, and causes the route information to be searched for. In this embodiment, the control unit 16B transmits the route information received from the route information search unit 15 to the navigation device 100.

[0077] <Configuration of mobile terminal 400B> As shown in FIG. 13, the mobile terminal 400B includes a processor 410, a memory 420, a display unit 430, a communication unit 440, and an imaging unit 450.

[0078] In this embodiment, the processor 410 captures a loaded image of the loaded object captured by the imaging unit 450 when receiving an instruction to acquire a loaded image from the vehicle-mounted device 1B. The processor 410 transmits the captured loading image via the communication unit 440 to the vehicle-mounted device 1B. The configuration of the processor 410 will be described later.

[0079] The memory 420 includes a read only memory (ROM) and a random access memory (RAM), neither of which are shown. In this embodiment, the memory 420 stores, for example, a control program and various data received from the processor 410. The memory 420 stores an application program for taking and transmitting a loaded image.

[0080] The display unit 430 is, for example, a display panel such as a liquid crystal display, and displays the information received from the processor 410 .

[0081] The communication unit 440 communicates with the in-vehicle device 1B under the control of the processor 410. The communication unit 440 is, for example, a short-range wireless communication device such as Bluetooth (registered trademark), and connects to the in-car device 1B to transmit and receive information.

[0082] The imaging unit 450 is, for example, a camera equipped with an imaging element such as a CCD (Charge Coupled Device) and is built into the mobile terminal 400B. The imaging unit 450 transmits the captured image to the processor 410 . In this embodiment, the imaging unit 450 captures, for example, a loaded image of the loaded object. The imaging unit 450 transmits the loaded image to the processor 410 .

[0083] <Configuration of the processor 410> As shown in FIG. 13, the processor 410 includes a terminal control unit 411. The terminal control unit 411 and the memory 420 transmit and receive various information via the bus line BL.

[0084] The terminal control unit 411 performs overall control of the mobile terminal 400B in accordance with a control program stored in the memory 420 and an application program for capturing and transmitting a loaded image. In this embodiment, the terminal control unit 411, in accordance with the application program, for example, causes the display unit 430 to display an instruction to capture a loaded image, a method for capturing a loaded image, and a sample image of the loaded image. For example, when the terminal control unit 411 receives an instruction to acquire a loaded image from the vehicle-mounted device 1B via the communication unit 440, it causes the display unit 430 to display an instruction to capture the loaded image, a method for capturing the loaded image, and a sample image of the loaded image. In this embodiment, the terminal control unit 411 transmits the loaded image captured by the imaging unit 450 to the vehicle-mounted device 1B in accordance with the application program.

[0085] <Processing of the Vehicle-Mounted Device 1B and the Portable Terminal 400B> The process flow of the in-car device 1B and the mobile terminal 400B will be described with reference to FIG.

[0086] As shown in FIG. 14, the control unit 16B transmits an instruction to the loaded weight information acquiring unit 11 to acquire the loaded weight of the loaded object (step S410). The control unit 16B transmits, via the communication unit 40, an instruction to the mobile terminal 400B to acquire a loaded image of the loaded object.

[0087] The terminal control unit 411 acquires a loaded image of the loaded object from the imaging unit 450, and transmits the acquired loaded image to the vehicle-mounted device 1B (step S510).

[0088] The control unit 16B transmits the loading image acquired in step S510 to the loading information acquisition unit 12B, and causes the loading information to be acquired (step S420).

[0089] The control unit 16B transmits the loading information acquired in step S420 to the aerodynamic analysis unit 13, and causes the aerodynamic analysis to be performed (step S430).

[0090] Control unit 16B transmits the loaded weight acquired in step S410 and the aerodynamic analysis result acquired in step S430 to electricity consumption calculation unit 14, and causes electricity consumption calculation unit 14 to calculate electricity consumption (step S440).

[0091] The control unit 16B acquires information about the departure point and destination from the navigation device 100 (step S450).

[0092] Control unit 16B transmits the electricity cost calculated in step S440 and the information relating to the departure point and destination acquired in step S450 to route information searching unit 15, causing it to search for route information (step S460).

[0093] The control unit 16B transmits the route information found in step S460 to the navigation device 100 (step S470), and ends the process.

[0094] <Actions and Effects> As described above, the vehicle-mounted device 1B according to this embodiment acquires images of loaded objects from the mobile terminal 400B in which an application program for acquiring and transmitting the loaded images is installed. When the mobile terminal 400B receives an instruction to acquire a loaded image from the vehicle-mounted device 1B in accordance with the application program, the mobile terminal 400B displays, for example, an instruction to capture the loaded image, a method for capturing the loaded image, and a sample image of the loaded image on the display unit 430. This allows the user to be notified in detail of points to be careful about when capturing a loaded image. Therefore, the user can easily understand the criteria for the loaded image required for calculating the electricity consumption. Furthermore, if the user captures an image in accordance with the image capturing instructions displayed on the display unit 430, the user can reliably capture a loading image for acquiring loading information. The mobile terminal 400B automatically transmits the captured loading image to the vehicle-mounted device 1B in accordance with the application program. Therefore, the user can save the trouble of transmitting the loaded image.

[0095] <Fourth embodiment> An in-vehicle device 1C according to this embodiment will be described with reference to FIGS. In addition, since the components having the same reference numerals as those in the first to third embodiments have the same functions, detailed description thereof will be omitted.

[0096] <Configuration of In-Vehicle Device 1C> As shown in FIG. 15, an in-car device 1C according to this embodiment includes a processor 10C, a memory 20, a display unit 30, and an input unit 50.

[0097] In this embodiment, the processor 10C calculates the electricity consumption of the vehicle based on information about cargo loaded on the roof rail or roof carrier of the vehicle equipped with the on-vehicle device 1C. The processor 10C searches for route information to the destination, including charging timing, based on the calculated electricity consumption and information on the departure point and destination acquired from the navigation device 100, for example. In this embodiment, the processor 10C transmits the searched route information to the navigation device 100. When the navigation device 100 receives the route information from the processor 10C, the navigation device 100 executes route guidance from the departure point to the destination based on the received route information. In this embodiment, the processor 10C acquires information on the shape and quantity of the cargo inputted from an input unit 50, which will be described later. In this embodiment, the processor 10C causes the display unit 30 to display an optimal loading method based on, for example, the type and quantity of cargo input by the user. The configuration of the processor 10C will be described later.

[0098] The input unit 50 is, for example, a capacitive touch panel disposed on the surface of the display panel of the display unit 30, and acquires information input by the user. In this embodiment, the input unit 50 acquires, for example, information regarding the shape and quantity of the cargo input by the user. The input unit 50 transmits information regarding the shape and quantity of the cargo to the processor 10C.

[0099] <Processor 10C Configuration> As shown in FIG. 16, the processor 10C is configured to include a loading weight information acquisition unit 11, a loading information acquisition unit 12, an aerodynamic analysis unit 13, an electricity consumption calculation unit 14, a route information search unit 15, a control unit 16C, and a proposal unit 18. Each unit of the processor 10C and the memory 20 transmit and receive various information via the bus line BL.

[0100] The control unit 16C performs overall control of the in-vehicle device 1C in accordance with a control program stored in the memory 20. In this embodiment, the control unit 16C causes the display unit 30 to display a screen for acquiring information when acquiring information regarding the shape and quantity of the loaded items. The control unit 16C causes the display unit 30 to display, for example, a screen as shown in FIG. In this embodiment, the control unit 16C acquires, for example, the size of the loading section of the roof carrier and the shape and number of the loaded items input by the user from the input unit 50. The control unit 16C transmits the size of the loading portion of the roof carrier and the shape and number of the loaded items to a proposal unit 18 (described later) via the bus line BL, and causes the proposal unit 18 to determine the optimal loading method. The control unit 16C causes the display unit 30 to display the optimum loading method received from the suggestion unit 18, which will be described later. The control unit 16C causes the display unit 30 to display image information indicating the loading position of each loaded object, for example.

[0101] The suggestion unit 18 determines the optimal loading method based on the input information acquired by the input unit 50. In this embodiment, the suggestion unit 18 calculates, for example, a loading method that minimizes the frontal projected area Sz and the side projected area Ss based on, for example, the size of the loading portion of the roof carrier and the shape and quantity of the loaded items received from the control unit 16C. The suggestion unit 18 may, for example, calculate a loading method that minimizes the height of the loaded items. The suggestion unit 18 transmits information about the loading method to the control unit 16C via the bus line BL.

[0102] <Loading Method Proposal Processing of the Vehicle-Mounted Device 1C> The loading method suggestion process in the vehicle-mounted device 1C according to this embodiment will be described with reference to FIG.

[0103] The control unit 16C causes the display unit 30 to display a screen for acquiring information regarding the shape and quantity of the loaded items (step S610).

[0104] The control unit 16C determines whether or not the user's input is complete (step S620). When the control unit 16C determines that the user's input is not complete ("NO" in step S620), the control unit 16C returns the process to a standby state. When the control unit 16C determines that the user's input is complete ("YES" in step S620), the control unit 16C moves the process to step S630.

[0105] The control unit 16C transmits the information on the loaded items input by the user to the suggestion unit 18, and causes the suggestion unit 18 to calculate the optimal loading method (step S630).

[0106] The control unit 16C causes the display unit 30 to display the optimal loading method calculated in step S630 (step S640), and ends the process.

[0107] <Actions and Effects> As described above, the vehicle-mounted device 1C of this embodiment includes an input unit 50 for inputting the shape and quantity of the cargo, and a suggestion unit 18 for suggesting the optimal loading method based on the input information of the input unit 50, and displays the suggested content on the display unit 30. That is, the vehicle-mounted device 1C acquires information on the cargo to be loaded from the user, and proposes to the user an optimal loading method for the cargo. The suggestion unit 18 of the in-vehicle device 1C suggests to the user, for example, a loading method that minimizes the frontal projected area Sz and the side projected area Ss. This allows the in-vehicle device 1C to minimize the deterioration of power consumption due to an increase in air resistance. The loading method in which the frontal projected area Sz and the side projected area Ss are smallest is an example of a loading method in which the load can be most stably loaded. This allows the in-vehicle device 1C to prevent the occurrence of falling of the loaded object and rollover accidents while traveling. Since the loading position of each load is visualized and displayed on the display unit 30, the user can easily load the load onto the roof carrier.

[0108] <Variation 1> For example, when there is a missing portion in the loading image received from the mobile terminal 400, the above-mentioned vehicle-mounted device 1A may acquire loading information based on the loading image received from the mobile terminal 400 and the loading image captured by a camera installed in the vehicle. That is, when a part of the loaded object is not captured in the loaded image acquired by the user, the vehicle-mounted device 1A captures the missing part with a camera installed in the vehicle to complement the loaded image. As a result, the loading information acquisition unit 12A of the vehicle-mounted device 1A acquires the loading information based on the complemented loading image, and therefore, can always acquire highly accurate loading information.

[0109] <Variation 2> The above-mentioned in-vehicle device 1, in-vehicle device 1A, in-vehicle device 1B, and in-vehicle device 1C may be configured to display the actual electricity consumption and the electricity consumption calculated by electricity consumption calculation unit 14 on display unit 30, for example, when the vehicle arrives at the destination. This allows the in-vehicle device 1 to indicate to the user the reliability of the calculated electricity efficiency.

[0110] <Modification 3> The above-described in-vehicle device 1, in-vehicle device 1A, in-vehicle device 1B, and in-vehicle device 1C may determine electricity consumption by machine learning. The electricity consumption calculation unit 14 determines the electricity consumption by using, for example, a trained model that uses the loaded image and actual electricity consumption information uploaded to a server by the user as training data. This improves the accuracy of electricity consumption, making it possible to present the user with route information from the departure point to the destination that includes highly accurate charging timings.

[0111] The above-mentioned in-vehicle device 1C may determine the optimal loading method by machine learning. The suggestion unit 18 determines the optimal loading method by using, for example, a trained model that uses loading images and actual electricity consumption information uploaded by a user to a server as training data. This allows the suggestion unit 18 to present to the user an optimal loading method that suppresses deterioration of electricity efficiency.

[0112] A reward may be given to users who upload loading images and actual electricity cost information to the server. This allows us to collect loading images and information on actual fuel consumption from more users, thereby improving the accuracy of the trained model.

[0113] <Modification 4> By changing the preset information stored in the memory 20 of the above-mentioned in-vehicle device 1, the in-vehicle device 1 can be easily installed in gasoline vehicles and hybrid vehicles. That is, the standard electricity efficiency and the deterioration rate of electricity efficiency stored in the preset information are changed to the standard fuel efficiency and the deterioration rate of fuel efficiency of the vehicle in which the on-vehicle device 1 is installed. The electricity consumption calculation unit 14 calculates the fuel consumption of the vehicle based on, for example, the standard fuel consumption obtained from the preset information and the deterioration rate of the fuel consumption. The route information search unit 15 calculates the possible cruising distance based on, for example, the current remaining amount of gasoline and the fuel efficiency calculated by the electricity cost calculation unit 14. The route information search unit 15 searches for a driving route from the departure point to a destination that has a gasoline filling facility within the cruising distance set as an intermediate point, based on the calculated cruising distance, map information and location information of the gasoline filling facility, and information regarding the departure point and destination. This allows the on-vehicle device 1 to be easily installed in gasoline vehicles and hybrid vehicles.

[0114] <Variation 5> The above-mentioned mobile terminal 400B may, for example, acquire the load weight of the load from the in-vehicle device 1B, and execute a process of calculating the electricity cost by an application program. In other words, the mobile terminal 400B may execute a process of capturing a loading image, a process of acquiring loading information from the captured loading image, a process of performing an aerodynamic analysis based on the loading information and the loading weight of the cargo, and a process of calculating electricity consumption based on the results of the aerodynamic analysis. This can reduce the processing load on the processor 10B of the in-vehicle device 1B. Since the processing load of the processor 10B of the in-vehicle device 1B is reduced, the power consumption of the in-vehicle device 1B can be reduced.

[0115] The above-mentioned loading information acquisition unit 12, aerodynamic analysis unit 13, electricity consumption calculation unit 14, route information search unit 15, and control unit 16 of the vehicle-mounted device 1 can be recorded on a recording medium readable by a computer system, and the program recorded on this recording medium can be read into memory and executed to realize the vehicle-mounted device 1 of the present invention. The computer system referred to here includes the OS and hardware such as peripheral devices.

[0116] If the above computer system utilizes a WWW (World Wide Web) system, it is also understood to include the homepage providing environment (or display environment). The above-mentioned program may be transmitted from a computer system in which the program is stored in a storage device or the like to another computer system via a transmission medium, or by a transmission wave in the transmission medium. The transmission medium for transmitting the above-mentioned program refers to a medium having a function for transmitting information, such as a network (communication network) such as the Internet or a communication line (communication line) such as a telephone line.

[0117] The above program may be for realizing a part of the above-mentioned functions. The above program may be a so-called differential file (differential program) that can realize the above-mentioned functions in combination with a program already recorded in the computer system.

[0118] Although an embodiment of the present invention has been described in detail above with reference to the drawings, the specific configuration is not limited to this embodiment, and designs that do not deviate from the gist of the present invention are also included. [Explanation of symbols]

[0119] 1;In-vehicle device 10;Processor 11: Load weight information acquisition unit 12: Loading information acquisition section 13;Aerodynamic analysis department 14;Electricity cost calculation department 15; Route information search section 16; Control section 17: Loading image acquisition section 18;Proposal Department 20;Memory 30;Display section 40; Communications Department 50: Input section 100;Navigation equipment 200;Weight sensor 300 Imaging device 400;Mobile terminal 410 Processor 411; Terminal control unit 420;Memory 430;Display section 440; Communications Department 450; Imaging section

Claims

1. a load weight information acquisition unit provided on the roof rail or the roof carrier and acquiring a load weight of a load; a loading information acquisition unit that acquires a loading size and a loading shape from image information; an aerodynamic analysis unit that performs an aerodynamic analysis based on the acquired loading information; an electricity consumption calculation unit that calculates an electricity consumption based on the load weight and the analysis result of the aerodynamic analysis unit; a route information search unit that searches for route information including charging timing from a departure point to a destination based on a current charging amount and a calculation result of the electricity cost calculation unit; An in-vehicle device comprising:

2. A loading image acquisition unit is provided for acquiring a loading image captured by a portable terminal, The vehicle-mounted device according to claim 1 , wherein the loading information acquisition unit acquires the loading size and the loading shape from the loading image captured by the loading image acquisition unit.

3. A communication unit that communicates with the mobile terminal, The in-vehicle device according to claim 2 , wherein the communication unit transmits a message to the mobile terminal to prompt the mobile terminal to provide the loading image.

4. A display unit for displaying information is provided, The in-vehicle device according to claim 1 , wherein the display unit displays an error message when the loading size or the loading shape is inappropriate based on the analysis result of the aerodynamic analysis unit.

5. An input unit for inputting the shape and quantity of the cargo; A suggestion unit that suggests an optimal loading method based on the input information of the input unit; Equipped with The in-vehicle device according to claim 4 , wherein the content of the proposal is displayed on the display unit.

6. one or more processors, one or more memories communicably connected to the one or more processors, and a load weight information acquisition unit provided on the roof rail or roof carrier for acquiring a load weight of a load; Equipped with The one or more processors: a loading information acquisition unit that acquires a loading size and a loading shape from image information; an aerodynamic analysis unit that performs an aerodynamic analysis based on the acquired loading information; an electricity consumption calculation unit that calculates an electricity consumption based on the load weight and the analysis result of the aerodynamic analysis unit; a route information search unit that searches for route information including charging timing from a departure point to a destination based on a current charging amount and a calculation result of the electricity cost calculation unit; An in-vehicle device comprising:

Images