JP2018179760A - Navigation device and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a navigation device and a program that easily set, for each user, a parking lot, corresponding to levels of user's importance to respective elements, as an object of guidance.SOLUTION: A navigation device 100 comprises: a candidate search part 41 which searches for parking lots as candidates for an object of guidance; an element value calculation part 42 which calculates a plurality of kinds of element value associated with respective candidates; an individual evaluation value calculation part 43 which calculates a plurality of individual evaluation values corresponding to the respective candidates by correcting the individual element values using a freely settable weighted value or function by operating an operation input device 3; a total evaluation value calculation part 44 which calculates total evaluation values corresponding to the respective candidates using the individual evaluation values; a list generation part 45 which generates a candidate list having the candidates arrayed based upon the total evaluation values; and a guidance object setting part 46 which sets a parking lot selected from the candidate list as an object of guidance.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a navigation device and a program.

  Conventionally, in a navigation device for a vehicle, a parking lot existing around a destination is searched, a parking lot targeted for guidance is selected from the parking lots included in the search result, and the parking lot is selected from the current position of the vehicle Techniques have been developed to guide the travel route to the parking lot. For example, Patent Document 1 discloses a navigation device that automatically selects a parking lot according to the parking fee and the distance from the parking lot to the destination when selecting a parking lot to be guided among a plurality of parking lots. (See paragraphs [0054], [0067], etc. of Patent Document 1).

JP, 2010-8142, A

  Generally, when selecting a parking lot targeted for guidance, the user considers several types of factors (e.g. parking fee and distance from destination to parking lot etc). However, the degree to which each of these factors is regarded as important is different for each user and also for each situation. The conventional navigation device has a problem that it is not possible to set a parking lot according to the degree of importance for each element by the user as a guidance target for each user.

  The present invention has been made to solve the above-described problems, and it is easy to set, for each user, a parking lot according to the degree of importance for each element by the user as a guidance target It aims at providing an apparatus and program.

  The navigation device according to the present invention can be set by operation of the operation input device, a candidate search unit for searching a parking lot which is a candidate for guidance target, an element value calculation unit for calculating plural types of element values for each candidate. The individual evaluation value calculation unit calculates a plurality of individual evaluation values corresponding to each of the candidates by correcting individual element values using a weight value or a function, and using each of the individual evaluation values, for each of the candidates. Set a guidance target as a comprehensive evaluation value calculation unit that calculates the corresponding comprehensive evaluation value, a list creation unit that creates a candidate list in which candidates are arranged based on the comprehensive evaluation value, and a parking lot selected from the candidate list And a guidance target setting unit.

  According to the present invention, as configured as described above, it becomes easy to set, for each user, a parking lot according to the degree of importance for each element by the user as a guidance target.

BRIEF DESCRIPTION OF THE DRAWINGS It is a block diagram which shows the principal part of the navigation apparatus which concerns on Embodiment 1 of this invention, and the principal part of the navigation system containing the said navigation apparatus. FIG. 2A is a block diagram showing a hardware configuration of the navigation device in accordance with the first embodiment of the present invention. FIG. 2B is a block diagram showing another hardware configuration of the navigation device in accordance with the first embodiment of the present invention. It is a flowchart which shows operation | movement of the navigation apparatus which concerns on Embodiment 1 of this invention. It is a flowchart which shows the detailed operation | movement of the parking lot search part which concerns on Embodiment 1 of this invention. It is explanatory drawing which shows an example of the list screen which concerns on Embodiment 1 of this invention. It is a block diagram which shows the principal part of the navigation apparatus which concerns on Embodiment 1 of this invention, and the principal part of other navigation systems containing the said navigation apparatus. It is a block diagram which shows the principal part of the navigation apparatus which concerns on Embodiment 2 of this invention, and the principal part of the navigation system containing the said navigation apparatus. It is a flowchart which shows operation | movement of the navigation apparatus based on Embodiment 2 of this invention. It is a flowchart which shows the detailed operation | movement of the parking lot search part which concerns on Embodiment 2 of this invention.

Embodiment 1
FIG. 1 is a block diagram showing a main part of a navigation device according to a first embodiment of the present invention and a main part of a navigation system including the navigation device. A navigation device 100 according to the first embodiment and a navigation system 200 including the navigation device 100 will be described with reference to FIG. In the example shown in FIG. 1, the navigation device 100 is configured by a dedicated on-board information terminal, and the on-board information terminal is mounted on, for example, a dashboard of the vehicle 1.

  As shown in FIG. 1, the vehicle 1 includes a display 2, an operation input 3, an audio output 4, a GPS (Global Positioning System) receiver 5, a gyro sensor 6, a 3 media receiver 7, and an ETC (Electronic Toll Collection System). The on-vehicle device 8 and the wireless communication device 9 are provided.

  The display device 2 is configured of, for example, a liquid crystal display integrated with the navigation device 100 or an organic EL (Electro Luminescence) display, or a HUD (Head-Up Display) mounted on the vehicle 1.

  The operation input device 3 is configured of, for example, a touch panel integrated with the display device 2, a hardware key provided adjacent to the display device 2, a microphone for voice input, a camera for gesture input, or the like.

  The audio output device 4 is configured of, for example, a speaker integrated with the navigation device 100 or a plurality of speakers mounted on the vehicle 1.

  The GPS receiver 5 receives a GPS signal transmitted by a GPS satellite (not shown).

  The gyro sensor 6 detects an angular velocity of the vehicle 1.

  The three-media receiver 7 is configured by a radio wave beacon receiver, an optical beacon receiver, and an FM (Frequency Modulation) multiplex broadcast receiver. [3] The media receiver 7 receives road traffic information and parking lot information distributed by VICS (registered trademark, Vehicle Information and Communication System). The road traffic information includes, for example, information on traffic congestion and information on traffic regulation. The parking lot information includes, for example, information indicating the fullness of each parking lot.

  The ETC in-vehicle device 8 has a function of receiving road traffic information and parking lot information distributed at ITS (Intelligent Transport Systems) spots. The road traffic information includes, for example, information on traffic congestion and information on traffic regulation. The parking lot information includes, for example, information indicating the fullness of each parking lot.

  The wireless communication device 9 is configured of, for example, a portable information terminal such as a smartphone brought into the vehicle 1 or a dedicated transmitter and receiver mounted on the vehicle 1. The wireless communication device 9 can communicate with a server device 10 provided outside the vehicle 1 via a computer network such as the Internet (not shown).

  The server device 10 includes a traffic information storage unit 11 and a full space information storage unit 12. Road traffic information is stored in the traffic information storage unit 11. The road traffic information includes, for example, information on traffic congestion and information on traffic regulation. The fullness information storage unit 12 stores information (hereinafter referred to as "fullness information") indicating the fullness state of each parking lot. The wireless communication device 9 receives road traffic information, fullness information, and the like from the server device 10 by communicating with the server device 10.

  The vehicle 1 also has a storage device 20. The storage device 20 is configured of, for example, an auxiliary storage device such as a hard disk drive (HDD), a solid state drive (SSD), or an optical disk. The storage device 20 may be provided outside the navigation device 100 or may be provided in the navigation device 100.

  The storage device 20 includes a map information storage unit 21 and a charge information storage unit 22. The map information storage unit 21 stores map information. This map information includes information indicating the position of each parking lot. The charge information storage unit 22 stores information (hereinafter referred to as “charge information”) indicating a parking charge per unit time (for example, one hour) in each time zone of each parking lot.

  Hereinafter, the main parts of the navigation device 100 will be described.

  The vehicle position calculation unit 31 calculates the current position of the vehicle 1 (hereinafter referred to as “vehicle position”) using the GPS signal received by the GPS receiver 5 or the output signal of the gyro sensor 6 or the like. .

  The destination setting unit 32 sets the destination of the vehicle 1 using the map information stored in the map information storage unit 21 according to the operation input to the operation input device 3.

  The candidate search unit 41 searches for a parking lot that is a candidate for guidance by the navigation device 100. More specifically, the candidate search unit 41 uses the map information stored in the map information storage unit 21 to set a predetermined range including the destination set by the destination setting unit 32 (hereinafter referred to as “search range”. ) Search the parking lot existing in the room as a candidate for guidance. The search range may be a range set in advance in the candidate search unit 41 or may be a range set by the operation of the operation input device 3. Specifically, for example, the search range is set to a circular range with a radius of 1 kilometer (km) centering on the destination. By narrowing the search range, it is possible to reduce the time required for searching for candidates.

  In addition to the map information, the candidate search unit 41 uses the parking lot information received by the 3 media receiver 7 or the ETC in-vehicle unit 8 or the full / full information received by the wireless communication device 9 to search within the search range. Of the existing parking lots, only parking lots having a vacancy may be searched as guidance target candidates. This can reduce the possibility of the vehicle 1 being guided to the full parking lot.

  The element value calculation unit 42 calculates, for each of the candidates included in the search result by the candidate search unit 41, values (hereinafter referred to as “element values”) corresponding to a plurality of types of elements considered when selecting a parking lot targeted for guidance. ) Is calculated. Specifically, for example, the element value calculation unit 42 calculates three types of element values A, B, and C as follows.

  That is, the element value calculation unit 42 acquires the vehicle position calculated by the vehicle position calculation unit 31 and the map information stored in the map information storage unit 21. The element value calculation unit 42 uses these pieces of information to calculate the travel distance from the vehicle position to each candidate. At this time, the element value calculation unit 42 alone may calculate an approximate value of the traveling distance using these pieces of information, or the element value calculation unit 42 cooperates with the route search unit 33 described later to obtain a route. An accurate travel distance may be calculated based on the travel route searched by the search unit 33. The element value calculation unit 42 calculates an element value A indicating a travel distance from the vehicle position to each candidate.

  Alternatively, the element value calculation unit 42 may use the vehicle position calculated by the vehicle position calculation unit 31, the map information stored in the map information storage unit 21, the three-media receiver 7, the ETC in-vehicle device 8, or wireless communication. The road traffic information received by the device 9 is acquired. The element value calculation unit 42 uses these pieces of information to estimate the required time from the vehicle position to each candidate. At this time, the element value calculation unit 42 alone may estimate the estimated value of the required time using these pieces of information, or the element value calculation unit 42 cooperates with the route search unit 33 described later to obtain a route. An accurate required time may be estimated based on the travel route searched by the search unit 33. The element value calculation unit 42 calculates an element value A indicating the required time from the vehicle position to each candidate.

  Further, the element value calculation unit 42 predicts the arrival time to each candidate based on the traveling distance or the required time from the own vehicle position to each candidate. When the predicted value of the parking time is input by the operation of the operation input device 3, the element value calculation unit 42 acquires the predicted value. The element value calculation unit 42 acquires, from the charge information storage unit 22, information indicating a parking charge per unit time in each time slot of each candidate. The element value calculation unit 42 uses these pieces of information to calculate the parking fee for each candidate over the parking time predicted from the predicted arrival time. The element value calculation unit 42 calculates an element value B indicating the parking fee of each candidate over the parking time predicted from the predicted arrival time.

  Alternatively, when the predicted value of the parking time is not input by the operation of the operation input device 3, the element value calculation unit 42 shows an element indicating the parking fee per unit time in the time zone including the predicted arrival time. Calculate the value B.

  Further, the element value calculation unit 42 acquires the map information stored in the map information storage unit 21. The element value calculation unit 42 calculates the distance from each candidate to the destination set by the destination setting unit 32 using the map information. The element value calculation unit 42 calculates an element value C indicating the distance from each candidate to the destination.

  Hereinafter, the element value A may be referred to as “first element value”, the element value B may be referred to as “second element value”, and the element value C may be referred to as “third element value”. The smaller the first element value A is, the earlier it arrives at the parking lot. The smaller the second element value B is, the lower the parking fee in the parking lot is. The smaller the third element value C, the shorter the moving distance from the parking lot to the destination. That is, the smaller each of the element values A, B, and C, the higher the probability that the user is a desirable candidate.

  The individual evaluation value calculation unit 43 calculates a plurality of evaluation values (hereinafter referred to as “individual evaluation values”) corresponding to each candidate by correcting the individual element values calculated by the element value calculation unit 42. It is a thing.

Specifically, for example, as shown in the following formulas (1) to (3), the individual evaluation value calculation unit 43 uses the weight values W _A , W _B , and W _C common to the candidates to generate each candidate The individual evaluation values Z _A , Z _B and Z _C of each candidate are calculated by weighting the element values A, B and C, respectively.

Z _A = W _A × A (1)
Z _B = W _B × B (2)
Z _C = W _C × C (3)

Here, each of the weight values W _A , W _B and W _C is a value that can be set by the operation of the operation input device 3. The weight values W _A , W _B and W _C may be different from one another or may be the same. The setting of the weight values W _A , W _B and W _C is executed by the operation of the operation input device 3 with respect to the setting screen, for example, in a state where a dedicated setting screen is displayed on the display device 2.

Alternatively, for example, the individual evaluation value calculation unit 43 may set the functions f _A (x), f _B (x), f _C (x) common to the candidates as shown in the following formulas (4) to (6). The individual evaluation values Z _A , Z _B and Z _C of each candidate are calculated by substituting the element values A, B and C of each candidate, respectively.

Z _A = f _A (A) (4)
Z _B = f _B (B) (5)
Z _C = f _C (C) (6)

Here, each of the functions f _A (x), f _B (x) and f _C (x) is a function that can be set by the operation of the operation input device 3. That is, each of the functions f _A (x), f _B (x) and f _C (x) is set to any function such as a linear function, a quadratic function, a cubic function, a logarithmic function or an exponential function It is good. Also, the functions f _A (x), f _B (x) and f _C (x) may be different functions or may be the same function. The settings of the functions f _A (x), f _B (x) and f _C (x) are, for example, operations of the operation input device 3 on the setting screen in a state where a dedicated setting screen is displayed on the display device 2 Is executed by

The comprehensive evaluation value calculation unit 44 calculates one evaluation value (hereinafter referred to as “general evaluation value”) corresponding to each candidate using the individual evaluation value calculated by the individual evaluation value calculation unit 43. is there. More specifically, the comprehensive evaluation value calculation unit 44 adds the individual evaluation values Z _A , Z _B , and Z _C of each candidate as shown in the following equation (7), and thereby evaluates the general evaluation value Z of each candidate. Calculate

_{Z = Z A + Z B +} Z C (7)

As described above, the smaller each of the element values A, B, and C, the higher the probability that it is a desirable candidate for the user. However, when selecting a parking lot to be guided, how much the elements corresponding to each of the element values A, B and C are regarded as important differs depending on the user. On the other hand, since the weight values W _A , W _B and W _C or the functions f _A (x), f _B (x) and f _C (x) can be set by the operation of the operation input device 3, In addition, it is possible to calculate the comprehensive evaluation value Z in accordance with the degree of importance for each element by the user.

  The list creation unit 45 creates a list (hereinafter referred to as a “candidate list”) in which the candidates included in the search result by the candidate search unit 41 are arranged based on the overall evaluation value Z. Specifically, for example, the list creation unit 45 creates a candidate list in which the candidates are arranged in ascending order of the overall evaluation value Z. The list creation unit 45 causes the display device 2 to display a screen including the created candidate list (hereinafter referred to as “list screen”).

  Here, the comprehensive evaluation value Z of each candidate calculated by the comprehensive evaluation value calculating unit 44 is displayed on the list screen.

  Further, on the list screen, items corresponding to the element values A, B and C of each candidate calculated by the element value calculation unit 42 are displayed. Specifically, for example, an item corresponding to the first element value A, that is, an item indicating the traveling distance or the required time from the vehicle position to each candidate is displayed. Also, an item corresponding to the second element value B, that is, each candidate's parking fee for each candidate over the predicted parking time from the predicted arrival time, or each candidate per unit time in a time zone including the predicted arrival time An item indicating the parking fee is displayed. Further, an item corresponding to the third element value C, that is, an item indicating the distance from each candidate to the destination is displayed. The user can easily compare a plurality of parking lots by visually recognizing these items.

  Each candidate included in the candidate list can be selected by the operation of the operation input device 3 on the list screen. The guidance target setting unit 46 sets a parking lot selected from the candidate list by the operation as a guidance target.

As described above, since the weight values W _A , W _B , W _C or the functions f _A (x), f _B (x), f _C (x) can be set by the operation of the operation input device 3, An overall evaluation value Z is calculated according to the degree of importance for each element by the user. By displaying a candidate list based on the comprehensive evaluation value Z and setting a parking lot selected from among the candidate lists as a guidance target, it is possible to correspond to the degree of importance for each element by the user for each user. It becomes easy to set a parking lot as a guidance target.

  The route search unit 33 uses the map information stored in the map information storage unit 21 to move from the vehicle position calculated by the vehicle position calculation unit 31 to the parking lot set as the guidance target by the guidance target setting unit 46. It searches for the travel route of

  In addition to the map information, the route search unit 33 uses the road traffic information received by the 3 media receiver 7, the ETC in-vehicle device 8 or the wireless communication device 9 to take a travel route in consideration of traffic congestion or traffic restriction. You may search for As a result, it is possible to exclude, from the search results, a travel route in which the vehicle 1 is caught in a traffic jam, or a travel route including a road on which the vehicle 1 can not pass.

  In addition, when the route search unit 33 cooperates with the element value calculation unit 42 when calculating the first element value A, the travel route from the vehicle position to each candidate is searched when the first element value A is calculated, When the guidance target parking lot is set, the search for the travel route from the vehicle position to the guidance target parking lot has already been completed. In this case, the route search unit 33 may use the search result at the time of calculation of the first element value A, instead of searching for the traveling route from the vehicle position to the parking lot targeted for guidance again. .

  The route guidance unit 34 sets one of the travel routes among the one or more travel routes included in the search result by the route search unit 33 as a guidance target. The route guidance unit 34 generates an image for guiding the travel route and causes the display device 2 to display the image as appropriate. In addition, the route guidance unit 34 generates a voice for guiding the traveling route and causes the voice output device 4 to appropriately output the voice. Thus, guidance of the travel route is realized.

  In addition to the traveling route, the route searching unit 33 searches for a moving route from the parking lot set as the guidance target by the guidance target setting unit 46 to the destination set by the destination setting unit 32. It may be. The route guidance unit 34 may display an image indicating the moving route on the display device 2 when the guidance of the traveling route is finished.

  A navigation unit 30 is configured by the host vehicle position calculation unit 31, the destination setting unit 32, the route search unit 33, and the route guidance unit 34. The candidate search unit 41, the element value calculation unit 42, the individual evaluation value calculation unit 43, the comprehensive evaluation value calculation unit 44, the list creation unit 45, and the guidance target setting unit 46 constitute a parking lot search unit 40. A navigation device 100 is configured by the navigation unit 30 and the parking lot search unit 40. Thus, the navigation system 200 is configured.

  Next, the hardware configuration of the navigation device 100 will be described with reference to FIG. As shown in FIG. 2A, the navigation device 100 is configured by a computer, and includes a processor 51 and a memory 52. In the memory 52, the host vehicle position calculation unit 31, the destination setting unit 32, the route search unit 33, the route guidance unit 34, the candidate search unit 41, the element value calculation unit 42, and the individual evaluation value calculation Programs for functioning as the unit 43, the comprehensive evaluation value calculating unit 44, the list creating unit 45, and the guidance object setting unit 46 are stored. The processor 51 reads out and executes the program stored in the memory 52, whereby the vehicle position calculation unit 31, the destination setting unit 32, the route search unit 33, the route guidance unit 34, the candidate search unit 41, and the element value calculation unit The functions of the individual evaluation value calculation unit 43, the comprehensive evaluation value calculation unit 44, the list creation unit 45, and the guidance target setting unit 46 are realized.

  The processor 51 is configured by, for example, a central processing unit (CPU), a graphics processing unit (GPU), a microprocessor, a microcontroller, or a digital signal processor (DSP). The memory 52 is formed of, for example, a semiconductor memory such as a random access memory (RAM), a read only memory (ROM), a flash memory, an erasable programmable read only memory (EPROM) or an electrically erasable programmable read only memory (EEPROM). There is.

  Alternatively, as shown in FIG. 2B, the vehicle position calculation unit 31, the destination setting unit 32, the route search unit 33, the route guidance unit 34, the candidate search unit 41, the element value calculation unit 42, the individual evaluation value calculation unit 43, The functions of the evaluation value calculating unit 44, the list creating unit 45, and the guidance target setting unit 46 may be realized by a dedicated processing circuit 53. The processing circuit 53 may be, for example, an application specific integrated circuit (ASIC), a programmable logic device (PLD), a field-programmable gate array (FPGA), a system-on-a-chip (SoC) or a large-scale integration (LSI). Or a combination of these.

  The host vehicle position calculation unit 31, the destination setting unit 32, the route search unit 33, the route guidance unit 34, the candidate search unit 41, the element value calculation unit 42, the individual evaluation value calculation unit 43, the comprehensive evaluation value calculation unit 44, Each function of each part of the list creation unit 45 and the guidance target setting unit 46 may be realized by the processing circuit 53, or the function of each part may be realized collectively by the processing circuit 53. In addition, the vehicle position calculation unit 31, the destination setting unit 32, the route search unit 33, the route guidance unit 34, the candidate search unit 41, the element value calculation unit 42, the individual evaluation value calculation unit 43, the comprehensive evaluation value calculation unit 44, Some functions of the list creation unit 45 and the guidance target setting unit 46 may be realized by the processor 51 and the memory 52 shown in FIG. 2A, and the remaining functions may be realized by the processing circuit 53 shown in FIG. 2B.

  Next, with reference to the flowchart of FIG. 3, the operation of the navigation device 100 will be described focusing on the operation when starting to guide the traveling route.

  First, in step ST1, the vehicle position calculation unit 31 calculates the vehicle position using the GPS signal received by the GPS receiver 5, the output signal of the gyro sensor 6, or the like.

  Next, in step ST2, the destination setting unit 32 sets the destination of the vehicle 1 using the map information stored in the map information storage unit 21 according to the operation input to the operation input device 3. .

  Next, in step ST3, the parking lot search unit 40 executes each process. The detailed processing contents of step ST3 will be described later with reference to the flowchart of FIG. The parking lot of guidance object is set by processing of step ST3.

  Next, in step ST4, the route search unit 33 uses the map information stored in the map information storage unit 21 to move from the vehicle position calculated in step ST1 to the parking lot set as the guidance target in step ST3. Search for the travel route of At this time, in addition to the map information, the route search unit 33 uses the road traffic information received by the 3 media receiver 7, the ETC in-vehicle device 8 or the wireless communication device 9 to drive in consideration of traffic congestion or traffic restriction. A route may be searched.

  When the route search unit 33 cooperates with the element value calculation unit 42 in step ST3, the travel route from the vehicle position to each candidate is searched at the time of calculation of the first element value A. When is set, the search for the travel route from the vehicle position to the parking space targeted for guidance has already been completed. In this case, the route search unit 33 may use the search result at the time of calculation of the first element value A, instead of searching for the traveling route from the vehicle position to the parking lot targeted for guidance again. .

  Next, in step ST5, the route guidance unit 34 sets one of the travel routes among the one or more travel routes included in the search result in step ST4 as a guidance target. The route guidance unit 34 starts the guidance of the travel route.

  Next, the detailed processing contents of step ST3 will be described with reference to the flowchart of FIG.

  First, in step ST11, the candidate search unit 41 searches for a parking lot that is a candidate for guidance. More specifically, the candidate search unit 41 uses the map information stored in the map information storage unit 21 to guide the parking lot existing in the search range including the destination set in step ST2 as a guide target candidate Search as. At this time, in addition to the map information, the candidate search unit 41 uses the parking lot information received by the three-media receiver 7 or the ETC in-vehicle unit 8 or the full / vacuum information received by the wireless communication device 9. Among the parking lots existing in the parking lot, only the parking lot with a vacancy may be searched as a guide target candidate.

  Next, in step ST12, the element value calculation unit 42 calculates multiple types of element values for each of the candidates included in the search result in step ST11. Specifically, for example, the element value calculation unit 42 calculates three types of element values A, B, and C.

Next, in step ST13, the individual evaluation value calculation unit 43 corrects the individual element values calculated in step ST12 to calculate a plurality of individual evaluation values corresponding to each candidate. Specifically, for example, the individual evaluation value calculation unit 43 weights the element values A, B, and C of each candidate using weighting values W _A , W _B , and W _C common to the candidates, respectively. Individual evaluation values Z _A , Z _B and Z _C of each candidate are calculated. Alternatively, for example, the individual evaluation value calculation unit 43 substitutes the element values A, B, and C of each candidate for the functions f _A (x), f _B (x), and f _C (x) common to the candidates. Thus, individual evaluation values Z _A , Z _B and Z _C of each candidate are calculated.

Next, in step ST14, the total evaluation value calculation unit 44 calculates one total evaluation value corresponding to each candidate using the individual evaluation value calculated in step ST13. More specifically, the comprehensive evaluation value calculation unit 44 calculates the comprehensive evaluation value Z of each candidate by adding the individual evaluation values Z _A , Z _B and Z _C of each candidate.

  Next, in step ST15, the list creation unit 45 creates a list in which candidates included in the search result in step ST11 are arranged based on the overall evaluation value Z, that is, a candidate list. Specifically, for example, the list creation unit 45 creates a candidate list in which the candidates are arranged in ascending order of the overall evaluation value Z.

  Further, in step ST15, the list creation unit 45 causes the display device 2 to display a screen including the created candidate list, that is, a list screen. At this time, the comprehensive evaluation value Z of each candidate calculated in step ST14 is displayed on the list screen. Further, on the list screen, items corresponding to the element values A, B and C of each candidate calculated in step ST13 are displayed.

  Each candidate included in the candidate list can be selected by the operation of the operation input device 3 on the list screen. The guidance target setting unit 46 sets a parking lot selected from the candidate list by the operation as a guidance target (step ST16). Thus, the process of step ST3 ends.

  FIG. 5 shows an example of the list screen. The list screen shown in FIG. 5 is a list of five candidates (in the figure, “○ ○ parking lot” “□ □ parking lot” “△ parking lot” “◇ parking lot” “☆ ☆ parking lot”) It is included. The five candidates are arranged in ascending order of the overall evaluation value Z ("evaluation value" in the figure). In the list screen shown in FIG. 5, an item corresponding to the first element value A, that is, an item indicating the required time from the vehicle position to each candidate (“required time to the parking lot” in the figure), The item corresponding to the two factor value B, that is, the item indicating the parking fee for each candidate over the parking time predicted from the predicted arrival time ("parking fee" in the figure), and the item corresponding to the third factor value C That is, an item indicating the distance from each candidate to the destination (“distance from the parking lot to the destination” in the drawing) is displayed.

The individual evaluation value calculation unit 43 can freely set a plurality of combinations of each of the weight values W _A , W _B , and W _C , or a function f _A (x), f _B (x), f _C ( Multiple combinations of each combination of x) may be settable. Specifically, for example, as each of the weight values W _A , W _B and W _C is represented by three levels of “large”, “medium” and “small”, “W _A : large, W _B : large, _A combination of W _C : small and a combination of “W _A : small, W _B : large, W _C : medium” may be set, that is, two combinations may be set.

In this case, the individual evaluation value calculation unit 43 may calculate the individual evaluation values Z _A , Z _B and Z _C for each combination for each candidate. The overall evaluation value calculation unit 44 may calculate the overall evaluation value Z for each combination for each candidate. The list creation unit 45 may create a candidate list for each of the combinations, and cause the display device 2 to display a list screen on which the candidate list can be switched by the operation of the operation input device 3.

  In this case, the list screen may include a software key for switching the candidate list. In the example shown in FIG. 5, the software key "list change" is displayed at the upper right end of the list screen. By pressing the software key, the candidate list in the list screen is switched to a candidate list of another combination.

Here, the combination of the weight values W _A , W _B and W _C or the combination of the functions f _A (x), f _B (x) and f _C (x) should be set for each assumed situation. It is suitable. As a result, by switching the candidate list in the list screen, it is possible to display the candidate list according to the current situation. By setting the parking lot selected from the candidate list as the guidance target, it becomes easy to set the parking lot corresponding to the degree of importance for each element in the situation as the guidance target for each situation. .

Further, in the individual evaluation value calculation unit 43, a combination of weight values W _A , W _B and W _C according to a plurality of situations may be set in advance. As a combination of such initial values, for example, a combination (W _A : small, W _B : small, W _C : medium) according to the situation “We want to get to the destination early by reducing the parking fee”, and “time Because you may be away from the destination, there is a combination (W _A : Medium, W _B : Large, W _C : Small) according to the situation that you want to stop in a cheap parking lot. It may be. Similarly, a combination of the functions f _A (x), f _B (x), and f _C (x) according to a plurality of situations may be preset in the individual evaluation value calculation unit 43.

  Further, when the display time of the list screen exceeds a predetermined time (for example, 30 seconds) without the guidance target being selected by the operation of the operation input device 3, the guidance target setting unit 46 selects one of the candidates included in the candidate list The parking lot with the smallest overall evaluation value Z may be selected, and the selected parking lot may be set as a guidance target.

  In addition, when the vehicle 1 is traveling, the list creation unit 45 may skip the process of causing the display device 2 to display the list screen. In this case, the guidance target setting unit 46 may select a parking lot having the smallest overall evaluation value Z among the candidates included in the candidate list, and set the selected parking lot as a guidance target. .

  Also, the first element value A may indicate that the larger the value, the earlier the car will arrive at the parking lot, and the larger the second element value B, the cheaper the parking fee in the parking lot. The third element value C may indicate that the larger the value, the shorter the moving distance from the parking lot to the destination. That is, the larger each of the element values A, B, and C, the higher the probability that the user is a preferable candidate.

  In this case, the candidate list may be one in which the candidates are arranged in descending order of the overall evaluation value Z. Further, when the display time of the list screen exceeds a predetermined time (for example, 30 seconds) without the guidance target being selected by the operation of the operation input device 3 or when the vehicle 1 is traveling, the guidance target setting unit 46 Alternatively, a parking lot having the largest overall evaluation value Z among the candidates included in the candidate list may be selected, and the selected parking lot may be set as a guidance target.

  Further, the destination setting unit 32 may set a via point of the vehicle 1 instead of or in addition to the destination of the vehicle 1. In this case, the search range by the candidate search unit 41 may be set to a predetermined range (for example, a circular range with a radius of 1 kilometer centered on the via point) including the via point. Also, the element value calculation unit 42 may calculate a third element value C corresponding to the distance from each candidate to the via point. Further, an item corresponding to the third element value C, that is, an item indicating a distance from each candidate to the via point may be displayed on the list screen.

  Further, the element value calculating unit 42 may calculate only any two of the three types of element values A, B, and C. In this case, items corresponding to the two types of element values may be displayed on the list screen, and items corresponding to the remaining one type of element values may not be displayed.

  Further, the charge information storage unit 22 may be provided in the server device 10 instead of the storage device 20. A block diagram in this case is shown in FIG. Thereby, the update frequency of the charge information can be increased. As a result, in the processing in which the element value calculation unit 42 calculates the second element value B, it is possible to refer to the latest charge information.

  Further, the map information storage unit 21 may be provided in the server device 10 instead of the storage device 20. Thereby, the update frequency of map information can be made high. As a result, a process in which the candidate search unit 41 searches for a candidate, a process in which the element value calculation unit 42 calculates the first element value A, a process in which the route search unit 33 searches for a traveling route, and the route guidance unit 34 a traveling route In the process of guiding the user, it is possible to refer to the latest map information.

  In addition, the navigation device 100 may be configured by a portable information terminal that can be attached to and detached from the dashboard of the vehicle 1, such as a smartphone or a PND (Portable Navigation Device). That is, the processor 51 and the memory 52 shown in FIG. 2A or the processing circuit 53 shown in FIG. 2B may be provided in the portable information terminal. In this case, the navigation device 100 may be integrated with the wireless communication device 9.

  Alternatively, the navigation device 100 may be provided in a server device capable of communicating with the vehicle 1, for example, the server device 10 shown in FIG. That is, the processor 51 and the memory 52 shown in FIG. 2A or the processing circuit 53 shown in FIG. 2B may be provided in the server device 10. In this case, the vehicle 1 appropriately communicates with the server device 10 using the wireless communication device 9 to execute the processes shown in the flowcharts of FIGS. 3 and 4.

  Alternatively, each function of the navigation device 100 may be realized by cooperation of at least two of the in-vehicle information terminal, the portable information terminal, and the server device.

  That is, the processor 51 shown in FIG. 2A may be realized by any number of processors provided in any terminal or device as long as it can be included in the navigation system 200. Memory 52 shown in FIG. 2A may be realized by any number of memories provided in any terminal or device as long as it can be included in navigation system 200. The processing circuit 53 shown in FIG. 2B may be realized by any number of processing circuits provided in any terminal or device, as long as it can be included in the navigation system 200.

  As described above, the navigation device 100 according to the first embodiment includes the candidate search unit 41 for searching a parking lot to be a guide target candidate, and an element value calculation unit 42 for calculating a plurality of types of element values for each candidate. An individual evaluation value calculation unit 43 that calculates a plurality of individual evaluation values corresponding to each of the candidates by correcting individual element values using weighting values or functions that can be set by the operation of the operation input device 3; , An overall evaluation value calculating unit 44 that calculates an overall evaluation value corresponding to each of the candidates using the individual evaluation value, a list creating unit 45 that creates a candidate list in which the candidates are arranged based on the overall evaluation value, And a guidance target setting unit configured to set a parking lot selected from the list as a guidance target. As a result, it becomes easy to set a parking lot according to the degree of importance for each element by the user as a guidance target for each user.

  In addition, the individual evaluation value calculation unit 43 can freely set a plurality of combinations of weight values or functions, and the individual evaluation value calculation unit 43 calculates an individual evaluation value for each combination for each candidate, and an overall evaluation value The calculation unit 44 calculates an overall evaluation value for each combination for each of the candidates, the list creation unit 45 creates a candidate list for each combination, and the list which can freely switch the candidate list by the operation of the operation input device 3 The screen is displayed on the display device 2. Thereby, it becomes easy to set the parking lot according to the degree of the importance view to each element in the situation concerned as guidance object for every situation.

Second Embodiment
FIG. 7 is a block diagram showing a main part of a navigation device according to a second embodiment of the present invention and a main part of a navigation system including the navigation device. A navigation device 100a according to the second embodiment and a navigation system 200a including the navigation device 100a will be described with reference to FIG.

  In FIG. 7, the same blocks as those in the block diagram of the first embodiment shown in FIG. In addition, the hardware configuration of the navigation device 100a is the same as that described in the first embodiment with reference to FIG.

  Similar to the candidate search unit 41 according to the first embodiment, the candidate search unit 41a searches for a parking lot that is a candidate for guidance by the navigation device 100a. The list creation unit 45a creates a candidate list and causes the display device 2 to display a list screen, as in the list creation unit 45 of the first embodiment.

  Here, the search range is not set in the candidate search unit 41a. The candidate search unit 41a is configured to sequentially search for parking lots that are candidates for guidance according to an instruction from the list creation unit 45a. Further, in the list creation unit 45a, a reference value α to be compared with the comprehensive evaluation value Z is set in advance. The list creation unit 45a is configured to create a candidate list of candidates having the comprehensive evaluation value Z equal to or less than the reference value α.

  That is, each time the comprehensive evaluation value calculating unit 44 calculates the comprehensive evaluation value Z, the list creating unit 45a compares the comprehensive evaluation value Z with the reference value α, and the candidate corresponding to the comprehensive evaluation value Z It is determined whether or not to be included in the candidate list. The list creation unit 45a instructs the candidate search unit 41a to sequentially search for parking lots that are candidates for guidance until, for example, the candidates for the predetermined number (hereinafter referred to as "reference number") are included in the candidate list. .

  The candidate search unit 41a, the element value calculation unit 42, the individual evaluation value calculation unit 43, the total evaluation value calculation unit 44, the list creation unit 45a, and the guidance target setting unit 46 constitute a parking lot search unit 40a. The navigation unit 100a is configured by the navigation unit 30 and the parking lot search unit 40a. Thus, the navigation system 200a is configured.

  Next, with reference to the flowchart of FIG. 8, the operation of the navigation device 100 a will be described focusing on the operation when starting the guidance of the travel route.

  First, in step ST1, the vehicle position calculation unit 31 calculates the vehicle position using the GPS signal received by the GPS receiver 5, the output signal of the gyro sensor 6, or the like.

  Next, in step ST2, the destination setting unit 32 sets the destination of the vehicle 1 using the map information stored in the map information storage unit 21 according to the operation input to the operation input device 3. .

  Next, in step ST3a, the parking lot search unit 40a executes each process. The detailed processing contents of step ST3a will be described later with reference to the flowchart of FIG. A parking lot targeted for guidance is set by the process of step ST3a.

  Next, in step ST4, the route search unit 33 uses the map information stored in the map information storage unit 21 to move from the vehicle position calculated in step ST1 to the parking lot set as the guidance target in step ST3a. Search for the travel route of At this time, in addition to the map information, the route search unit 33 uses the road traffic information received by the 3 media receiver 7, the ETC in-vehicle device 8 or the wireless communication device 9 to drive in consideration of traffic congestion or traffic restriction. A route may be searched.

  When the route search unit 33 cooperates with the element value calculation unit 42 in step ST3a, the travel route from the vehicle position to each candidate is searched at the time of calculation of the first element value A. When is set, the search for the travel route from the vehicle position to the parking space targeted for guidance has already been completed. In this case, the route search unit 33 may use the search result at the time of calculation of the first element value A, instead of searching for the traveling route from the vehicle position to the parking lot targeted for guidance again. .

  Next, in step ST5, the route guidance unit 34 sets one of the travel routes among the one or more travel routes included in the search result in step ST4 as a guidance target. The route guidance unit 34 starts the guidance of the travel route.

  Next, the detailed processing contents of step ST3a will be described with reference to the flowchart of FIG.

  First, in step ST21, the candidate search unit 41a searches for a first parking lot that is a candidate for guidance. Specifically, for example, the candidate search unit 41a uses the map information stored in the map information storage unit 21 to set one parking lot closest to the destination set in step ST2 as a guide target candidate. Search for. At this time, in addition to the map information, the candidate search unit 41a has a vacancy by using the parking lot information received by the 3 media receiver 7 or the ETC in-vehicle device 8 or the full / empty information received by the wireless communication device 9. Among the parking lots, one parking lot closest to the destination may be searched as a guide target candidate.

  Next, in step ST22, the element value calculation unit 42 calculates a plurality of types of element values regarding the candidates searched in step ST21. Specifically, for example, the element value calculation unit 42 calculates three types of element values A, B, and C as in the first embodiment.

Next, in step ST23, the individual evaluation value calculation unit 43 calculates a plurality of individual evaluation values corresponding to the candidates searched in step ST21 by correcting the individual element values calculated in step ST22. . Specifically, for example, the individual evaluation value calculation unit 43 individually weights the element values A, B, and C using the same weight values W _A , W _B , and W _C as in the first embodiment. Evaluation values Z _A , Z _B and Z _C are calculated. Alternatively, for example, the individual evaluation value calculation unit 43 substitutes the element values A, B, and C into the functions f _A (x), f _B (x), and f _C (x) as in the first embodiment, respectively. The individual evaluation values Z _A , Z _B and Z _C are calculated by

Next, in step ST24, the overall evaluation value calculation unit 44 calculates one overall evaluation value corresponding to the candidate searched in step ST21, using the individual evaluation value calculated in step ST23. More specifically, the comprehensive evaluation value calculation unit 44 calculates the comprehensive evaluation value Z by adding the individual evaluation values Z _A , Z _B and Z _C.

  Next, in step ST25, the list creation unit 45a compares the comprehensive evaluation value Z calculated in step ST24 with the reference value α. If the comprehensive evaluation value Z calculated in step ST24 is a value larger than the reference value α (step ST25 “NO”), the list creation unit 45a searches the next parking lot to be a candidate for guidance as a candidate search It instructs the part 41a.

  On the other hand, if comprehensive evaluation value Z calculated in step ST24 is a value equal to or smaller than reference value α (step ST25 “YES”), list creation unit 45a selects the candidate retrieved in step ST21 in step ST26. Include in the list. Next, in step ST27, the list creation unit 45a determines whether the reference number of candidates has been included in the candidate list. If the number of candidates included in the candidate list is less than the reference number ("NO" in step ST27), the list creation unit 45a instructs the candidate search unit 41a to search for the next parking lot to be a guide target candidate.

  In response to an instruction from the list creation unit 45a (step ST25 “NO” or step ST27 “NO”), in step ST28, the candidate search unit 41a searches for the next parking lot to be a guide target candidate. Specifically, for example, the candidate search unit 41a searches one parking lot closest to the destination next to the parking lot searched in step ST21 as a guide target candidate. At this time, the candidate search unit 41a uses the parking lot information or the full space information to select one parking lot near the destination next to the parking lot searched in step ST21 among the parking lots with vacant spaces. It may be searched as a guide target candidate.

  Next, the processing of steps ST22 to ST27 similar to the above is executed for the parking lot searched in step ST28. In step ST28 of each of the second and subsequent times, the candidate search unit 41a searches one parking lot near the destination next to the parking lot searched in the previous step ST28 as a candidate for guidance.

  When the reference number of candidates is included in the candidate list (Step ST27 “YES”), the list creation unit 45a ends the creation of the candidate list. Next, in step ST29, the list creation unit 45a causes the display device 2 to display a list screen.

  Each candidate included in the candidate list can be selected by the operation of the operation input device 3 on the list screen. The guidance target setting unit 46 sets a parking lot selected from the candidate list by the operation as a guidance target (step ST30). Thus, the process of step ST3a ends.

The navigation device 100 a according to the second embodiment provides the same effect as the navigation device 100 according to the first embodiment. That is, since the weight values W _A , W _B and W _C or the functions f _A (x), f _B (x) and f _C (x) can be set by the operation of the operation input device 3, the user A comprehensive evaluation value Z is calculated according to the degree of importance for each element by the user. By displaying a candidate list based on the comprehensive evaluation value Z and setting a parking lot selected from among the candidate lists as a guidance target, it is possible to correspond to the degree of importance for each element by the user for each user. It becomes easy to set a parking lot as a guidance target.

In addition, it is preferable to set the combination of weight values W _A , W _B and W _C or the combination of functions f _A (x), f _B (x) and f _C (x) for each assumed situation. It is. As a result, by switching the candidate list in the list screen, it is possible to display the candidate list according to the current situation. By setting the parking lot selected from the candidate list as the guidance target, it becomes easy to set the parking lot corresponding to the degree of importance for each element in the situation as the guidance target for each situation. .

  In addition to these effects, since there is no restriction on the search range, it is possible to search for a candidate even when there is no parking lot near the destination or via point. In addition, for example, it is easy to create a candidate list according to the situation that “we want to stop at a cheap parking lot anyway even if the moving distance from the parking lot to the destination or via point is long”.

  It should be noted that the list creation unit 45a instructs the candidate search unit 41a to sequentially search the parking spaces that are candidates for guidance until the candidate list includes the candidates for the reference number or more, and the list generation unit 45a is for the candidates for the reference number or more. The candidate search unit 41a may be instructed to sequentially search the parking lots that are candidates for guidance until the comprehensive evaluation value Z is calculated.

  In addition, the candidate search unit 41a may search two or more parking lots as candidates for guidance in step ST21. The candidate search unit 41a may search two or more parking lots as candidates for guidance in step ST28 of each time. In this case, the list creation unit 45a may determine in step ST27 whether or not the candidates more than the reference number have been included in the candidate list.

  In addition, the navigation device 100a and the navigation system 200a according to the second embodiment can adopt various modifications similar to those described in the first embodiment.

  In the scope of the invention, the present invention allows free combination of each embodiment, or modification of any component of each embodiment, or omission of any component in each embodiment. .

  Reference Signs List 1 vehicle, 2 display device, 3 operation input device, 4 voice output device, 5 GPS receiver, 6 gyro sensor, 7 3 media receiver, 8 ETC in-vehicle device, 9 wireless communication device, 10 server device, 11 traffic information storage Section 12 12 space information storage unit 20 storage unit 21 map information storage unit 22 charge information storage unit 30 navigation unit 31 own vehicle position calculation unit 32 destination setting unit 33 route search unit 34 route guidance Part, 40, 40a Parking lot search part, 41, 41a Candidate search part, 42 Element value calculation part, 43 Individual evaluation value calculation part, 44 Comprehensive evaluation value calculation part, 45, 45a List creation part, 46 Guidance object setting part, 51 Processor, 52 Memory, 53 Processing Circuit, 100, 100a Navigation Device, 200, 200a Navigation System.

Claims (19)

A candidate search unit for searching a parking lot that is a candidate for guidance;
An element value calculation unit that calculates a plurality of types of element values for each of the candidates;
An individual evaluation value calculation unit that calculates a plurality of individual evaluation values corresponding to each of the candidates by correcting each of the element values using a weighting value or function that can be set by operation of the operation input device;
An overall evaluation value calculation unit that calculates an overall evaluation value corresponding to each of the candidates using the individual evaluation value;
A list creation unit that creates a candidate list in which the candidates are arranged based on the total evaluation value;
A guidance target setting unit that sets the parking lot selected from the candidate list as the guidance target;
A navigation device comprising   The element value calculation unit may calculate a first element value corresponding to a travel distance or a required time from the vehicle position to the candidate, a second element value corresponding to the candidate parking fee, or the candidate or the destination from the candidate The navigation device according to claim 1, wherein at least two of the third element values corresponding to the distance to the ground are calculated.   The navigation apparatus according to claim 1, wherein the individual evaluation value calculation unit calculates the individual evaluation value by weighting the element value using the weight value.   The navigation apparatus according to claim 1, wherein the individual evaluation value calculation unit calculates the individual evaluation value by substituting the element value into the function.   The navigation device according to claim 1, wherein the comprehensive evaluation value calculation unit calculates the comprehensive evaluation value by adding the individual evaluation values.   The navigation apparatus according to claim 1, wherein the list creation unit creates the candidate list in which the candidates are arranged in ascending order of the total evaluation value.   The navigation apparatus according to claim 1, wherein the list creation unit displays a list screen including the candidate list on a display device.   The navigation apparatus according to claim 7, wherein an item corresponding to the element value is displayed on the list screen.   In the list screen, an item indicating a traveling distance or a required time from the vehicle position to the candidate, an item indicating the parking fee of the candidate, or an item indicating a distance from the candidate to the destination or via point A navigation device according to claim 8, characterized in that at least two items of are displayed. The individual evaluation value calculation unit can set a plurality of combinations of the weight value or the function,
The individual evaluation value calculation unit calculates, for each of the candidates, the individual evaluation value for each of the combinations,
The comprehensive evaluation value calculation unit calculates the comprehensive evaluation value for each combination for each of the candidates,
The list creation unit creates the candidate list for each combination, and displays the list screen on which the candidate list can be switched by the operation of the operation input device on the display device. Navigation device as described.   The guidance target setting unit sets, as the guidance target, the parking lot selected by the operation of the operation input device on the list screen among the candidates included in the candidate list. Navigation device as described.   The guidance target setting unit is characterized in that the parking lot having the smallest overall evaluation value is selected from the candidates included in the candidate list, and the selected parking lot is set as the guidance target. The navigation device according to claim 6.   The navigation apparatus according to claim 1, wherein the candidate search unit searches the parking lot existing in a search range including a destination or a transit point as the candidate.   The navigation apparatus according to claim 1, wherein the candidate search unit searches for the candidate using full space information of the parking lot.   The navigation apparatus according to claim 1, further comprising a route searching unit configured to search for a traveling route from the vehicle position to the parking lot set as the guidance target using map information and road traffic information.   The element value calculation unit calculates at least two types of the element values including the second element value, and calculates the second element value using the charge information of the parking lot stored in the server device. The navigation apparatus according to claim 2, wherein:   7. The navigation apparatus according to claim 6, wherein the candidate search unit sequentially searches the candidates until the candidates having the total evaluation value not more than a reference value are searched for the reference number or more.   18. The navigation apparatus according to claim 17, wherein the list creation unit creates the candidate list according to the candidates having the total evaluation value less than the reference value. Computer,
A candidate search unit for searching a parking lot that is a candidate for guidance;
An element value calculation unit that calculates a plurality of types of element values for each of the candidates;
An individual evaluation value calculation unit that calculates a plurality of individual evaluation values corresponding to each of the candidates by correcting each of the element values using a weighting value or function that can be set by operation of the operation input device;
An overall evaluation value calculation unit that calculates an overall evaluation value corresponding to each of the candidates using the individual evaluation value;
A list creation unit that creates a candidate list in which the candidates are arranged based on the total evaluation value;
A guidance target setting unit that sets the parking lot selected from the candidate list as the guidance target;
Program to function as.

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