JP4172213B2 - Navigation system, navigation device, search information output method, and program - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a navigation system, a navigation device, a search information output method, and a program.
[0002]
[Prior art]
Conventionally, in a navigation device, for example, the current position, that is, the current location is detected by GPS (Global Positioning System), map data is read from a data recording unit, a map screen is formed on a display of a display unit, A map of the current location and the surrounding area is displayed on the map screen. Therefore, the operator can recognize not only the current location but also the surrounding situation.
[0003]
Further, it is possible to move a predetermined route from the departure point to the destination based on the current location detected by the navigation device.
[0004]
For example, when a navigation device is mounted on a PDA (personal portable information terminal) as a mobile terminal, when an operator inputs a departure point and a destination, a search process is performed to search for a route and search for the route. The route, that is, the searched route is output by the output device. For example, when the output device is a display unit, it is displayed on a map screen formed on the display unit. Therefore, the operator can walk from the departure point to the destination according to the current location detected by the navigation device and the displayed search route while holding the PDA.
[0005]
Also, for example, when a navigation device is mounted on a vehicle, when a driver who is an operator inputs a departure point and a destination, a search process is performed to search for a route, and the searched route is output by an output device. For example, when the output device is a display unit, it is displayed on a map screen formed on the display unit. Therefore, the driver can drive the vehicle from the departure point to the destination according to the current location detected by the navigation device and the displayed search route.
[0006]
[Problems to be solved by the invention]
However, in the conventional navigation device, the route is searched according to a preset search condition, for example, a route length representing the distance from the departure point to the destination, and therefore the searched route is not necessarily preferable for the operator. I don't know if
[0007]
That is, if there are points with relatively different altitudes on the search route, the operator will need to move between the point with the lowest altitude and the point with the highest altitude. Depending on conditions for moving between different points, that is, ascending / descending conditions, even if a route having a short route length is set as a searched route, it may not be a preferable searched route for the operator.
[0008]
For example, when walking from the starting point to the destination, whether it is necessary to move up and down hoistways such as stairs between points with relatively different altitudes, it is necessary to move downhill roads, uphill roads, etc. The search route obtained can be manipulated depending on the lifting conditions such as whether it is possible to move using a lifting machine such as an elevator or an escalator, whether it is necessary to move while holding a large load, etc. Judgment whether it is favorable for the person is different.
[0009]
Also, whether or not it is necessary to move between high-speed and toll roads such as expressways and toll roads between points of relatively different altitudes when driving a vehicle from the starting point to the destination, for example, mountains Whether the obtained search route is favorable for the operator depending on the lifting conditions such as whether it is necessary to move on a snowy road etc. in the area, whether it is possible to move on a road with sufficient width, etc. Judgment is different.
[0010]
An object of the present invention is to provide a navigation system, a navigation device, a search information output method, and a program that can solve the problems of the conventional navigation device and can surely obtain a search route preferable for an operator. .
[0011]
[Means for Solving the Problems]
Therefore, in the navigation system of the present invention, the search is performed based on the guidance condition setting processing means for setting the guidance start point and the guidance end point, and the navigation data including the guidance start point, the guidance end point, and altitude data of the point. Search processing means for searching for a route, and output processing means for outputting an altitude distribution of the searched route.
The search processing means searches for the searched route by changing the road cost using an accumulated value of an absolute value of an altitude difference between adjacent points in the route obtained based on the altitude data. To do.
[0020]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In this case, a navigation device mounted on a PDA (personal personal digital assistant) as a first mobile terminal will be described, but the present invention can also be applied to a navigation device mounted on a vehicle.
[0021]
FIG. 1 is a functional block diagram of a navigation system according to an embodiment of the present invention.
[0022]
In the figure, 91 is a guide condition setting processing means for setting a guide start point and a guide end point, and 92 is a search route based on navigation data including the guide start point, the guide end point, and altitude data of the point. Search processing means 93 is an output processing means for outputting the altitude distribution of the search route.
[0023]
FIG. 2 is a conceptual diagram of the navigation system in the embodiment of the present invention.
[0024]
In the figure, 61 is a personal computer as a second user terminal, 62 is an information center as an information provider, and the personal computer 61 and the information center 62 are connected via a network 43. Reference numeral 14 denotes a navigation device mounted on the PDA. The navigation device 14 includes a navigation processing unit 17, a data recording unit 16, and the like.
[0025]
The personal computer 61, the server 63, the navigation processing unit 17, and the like function as a computer based on a predetermined program, data, and the like, either individually or in combination of two or more. The navigation device 14, the network 43, the personal computer 61, the information center 62, etc. constitute a navigation system.
[0026]
The personal computer 61 includes a CPU 71 as an arithmetic device and a control device, a display unit 72 as an output device that outputs various information to an operator, an operation unit 73, a recording device 74, a communication unit 75, and the like. In the present embodiment, the CPU 71 is used as the arithmetic device and the control device, but an MPU or the like can be used instead of the CPU 71. The display unit 72 may be a display such as a CRT display, a liquid crystal display, or a plasma display. In the present embodiment, the display unit 72 is used as an output device, but instead of the display unit 72, an audio output device that outputs various kinds of information to the operator by voice is used. You can also.
[0027]
As the operation unit 73, a keyboard, a mouse, or the like can be used, and a touch panel formed on the display can also be used. A bar code reader, a light pen, a remote control device for remote operation, a joystick, or the like can also be used. In the touch panel, an operation area such as various keys, switches, and buttons is formed on the display, and input can be performed by touching (pressing) the operation area.
[0028]
The recording device 74 includes not only an internal storage device (not shown) such as a RAM, a ROM, and a flash memory, but also an external storage device such as a hard disk and a memory card. The hard disk constitutes a first recording medium, and the memory card constitutes a second recording medium. Further, as the external storage device, in addition to a hard disk and a memory card, a magnetic tape, a magnetic drum, a CD-ROM, a CD-R, an MD, a DVD, an optical disk, an MO, an IC card, an optical card, and the like may be provided. it can. In order to use the external storage device, the recording device 74 is provided with a reading device for reading data recorded in the external storage device and a writing device for recording data.
[0029]
In the present embodiment, a personal computer 61 is used as the user terminal, but instead of the personal computer 61, such as an electronic notebook, a mobile phone, a mobile terminal, a video phone, a game machine, A device that can be connected to the network 43 and can perform two-way communication can also be used. In this embodiment, a PDA is used as a mobile terminal. However, instead of the PDA, a mobile phone such as an electronic notebook, a mobile phone, a mobile terminal, a videophone, or a game machine is used. It is also possible to use one that can perform two-way communication.
[0030]
The information center 62 includes a server 63, a navigation data database (DB) 64, which is connected to the server 63 and records navigation data. The navigation data database 64 includes a map data file in which map data for displaying a map is recorded, a search data file in which search data for searching for a route is recorded, and a facility in which facility data relating to various facilities is recorded. It consists of data files. A data file such as a road data file, an intersection data file, a node data file, and a facility data file is formed in the map data file, and road data representing information on each road (road link) is stored in the road data file. Intersection data representing the information of each intersection in the node data file is node data representing the information of the node points set along each road, and the facility data file is data representing a landmark of a predetermined facility, that is, a land Mark data is recorded respectively. Note that the landmark data includes coordinates indicating the location of the facility, the name of the facility, an image for drawing the landmark, and the like. Further, navigation data is composed of map data, search data, facility data, and the like.
[0031]
As the road data, regarding the road condition, the width, the gradient, the cant, the bank, the road surface condition, the number of road lanes, the position where the number of lanes decreases, the position where the width becomes narrower, the level crossing, The data representing the position of the point set in correspondence with the node point, the altitude (height) of the point, etc., the data representing the radius of curvature, intersection, T-junction, corner entrance and exit, etc. Regarding attributes, in addition to data representing downhill roads, uphill roads, mountain roads, etc., data representing hoistways such as footbridges, underpasses, stairs, etc., data representing hoisting machines such as elevators, escalators, etc. In addition to ordinary roads such as prefectural roads and narrow streets, data representing expressways and toll roads such as expressways, city expressways, and toll roads are recorded. In addition, for highway / toll roads, data indicating the entrance and exit attachment roads (rampways), toll gates, etc. are recorded.
[0032]
Further, as the node data, actual road branch points (including intersections, T-junctions, etc.), node points set for each road according to a radius of curvature, and the positions of the respective node points Altitude data representing the coordinates to be represented, the link between the node points connecting the node points, the length of the link between the node points, the altitude (height) of each node point, etc. is recorded.
[0033]
Then, as the search data, data representing the road number, road length, etc. of each road constituting the search route is recorded.
[0034]
Further, as the facility data, data representing facilities such as hotels, gas stations, parking lots, and tourist facilities in each region is recorded. The navigation data database 64 also records voice output data for outputting predetermined information by voice.
[0035]
By the way, the information center 62 is a traffic information transmission center as a traffic information provider, for example, traffic congestion information, regulation information, parking lots transmitted from a VICS (Vehicle Information and Communication System) center (not shown). In addition to traffic information consisting of information such as information, traffic accident information, and congestion status of service areas, general information such as news and weather forecasts can be received. The data is transmitted as it is to the personal computer 61 via the network 43 or recorded in the navigation data database 64. For this purpose, a statistical data file is arranged in the navigation data database 64, and past traffic information and general information are recorded in time series as statistical data, and predetermined processing is performed on the past traffic information and general information. And processed data of traffic information and general information, for example, travel time when moving along each road constituting the searched route is recorded as the processed data. In addition, when processing traffic information and general information, the said general information etc. are referred as needed.
[0036]
The information center 62 may be any one of an individual, a company, a group, a local government, a government related organization, and the like. Then, the information center 62 creates the navigation data itself or purchases it from another information provider and transmits it to the personal computer 61.
[0037]
The network 43 includes a LAN (Local Area Network), a WAN (Wide Area Network), an intranet, a cellular phone line network, a telephone line network, a public communication line network, a dedicated communication line network, a communication line network such as the Internet, etc. Various communication means consisting of can be used. As the network 43, a communication means using CS broadcasting by a broadcasting satellite, BS broadcasting, terrestrial digital television broadcasting, FM multiplex broadcasting, or the like can be used. Further, as the network 43, communication means such as a non-stop automatic toll payment system (ETC) and a boundary communication system (DSRC) used in an intelligent transportation system (ITS) can be used.
[0038]
Next, the navigation device 14 having the above configuration will be described.
[0039]
FIG. 3 is a block diagram of the navigation device according to the embodiment of the present invention.
[0040]
In the figure, reference numeral 14 denotes a navigation device. The navigation device 14 performs various arithmetic processing such as navigation processing, map data, and a route when a route is searched based on input information. A data recording unit 16 in which navigation data such as data is recorded, an input unit 34 as an operation unit, a display unit 35 as a first notification unit, a voice output unit 37 as a second notification unit, a communication unit 38, a first 1 and external slots 44 and 45 as second slots. The data recording unit 16 is constituted by a flash memory and is disposed as an internal storage device.
[0041]
The external slots 44 and 45 constitute an interface, and by setting a GPS card 46 as a current location detection unit in the external slot 44, the current location can be detected by the GPS card 46, and communication as a communication unit By setting the card 47 in the external slot 44, the network 43 (FIG. 2) and the navigation device 14 can be connected by the communication card 47, and by setting the memory card 48 in the external slot 45, the memory card 48 Various programs, data, and the like recorded in can be read out.
[0042]
The GPS card 46 incorporates a GPS sensor (not shown), and the GPS sensor detects a current location on the earth by receiving radio waves generated by artificial satellites, that is, GPS signals.
[0043]
The navigation processing unit 17 includes an arithmetic device that controls the entire navigation device 14 and a CPU 31 as a control device, a RAM 32 that is used as a working memory when the CPU 31 performs various arithmetic processes, and a control program. A ROM 33 in which various programs for searching for a route to the destination, route guidance, and the like are recorded as an internal storage device. The navigation processing unit 17 includes the input unit 34, the display unit 35, and a voice input unit. 36, the audio output unit 37, the communication unit 38, the data recording unit 16, and the external slots 44 and 45 are connected. A semiconductor memory, a magnetic core, or the like is used as the RAM 32, ROM 33, data recording unit 16, or the like. An MPU or the like can be used instead of the CPU 31 as the arithmetic device and the control device.
[0044]
The data recording unit 16 uses a flash memory, but a hard disk (not shown) may be provided as an external storage device. In that case, a reading device for reading data recorded on the hard disk and a writing device for recording data on the hard disk are provided. A third recording medium is configured by the hard disk. In place of the hard disk, a flexible disk, CD-ROM, CD-R, MD, DVD, optical disk, MO, IC card, optical card, memory card, or the like can be provided as an external storage device.
[0045]
In the present embodiment, various programs are recorded in the ROM 33 and various data are recorded in the data recording unit 16, but the programs, data, and the like are recorded in the same external storage device. You can also. In this case, for example, the program, data, and the like can be read from the external storage device and written to the data recording unit 16. Therefore, the program, data, etc. can be updated by exchanging the external storage device.
[0046]
The input unit 34 is used for correcting the current location, inputting a starting point indicating a guidance start point and a destination indicating a guidance end point, and operating the communication unit 38. , A switch, a button, and other operation switches (not shown) and a stylus pen. The input unit 34 is configured by various operation switches (not shown) such as various keys, bars, switches, and buttons displayed as images on a screen formed on a display (not shown) of the display unit 35. Input can be performed by clicking with the stylus pen.
[0047]
As the input unit 34, a keyboard, a mouse, a barcode reader, a remote control device for remote operation, a light pen, a joystick, or the like may be used, or a microphone or the like for inputting necessary information by voice may be used. it can.
[0048]
On the various screens formed on the display, operation guidance, operation menus, key guidance, a search route from the current location to the destination, guidance information along the search route, FM multiplex broadcast programs, etc. are displayed. Is displayed. As the display unit 35, a display such as a CRT display, a liquid crystal display, or a plasma display can be used.
[0049]
Furthermore, the voice output unit 37 includes a voice synthesizer and a speaker (not shown), and the search route, guidance information, and the like are output from the voice output unit 37 as voice synthesized by the voice synthesizer, for example. In addition to the voice synthesized by the voice synthesizer, various sounds, various guidance information recorded in advance on a tape, a memory, and the like can be output.
[0050]
Then, the communication unit 38 sets the communication card 47 in the external slot 44 to connect the navigation device 14 and the personal computer 61 via the wireless LAN or connect the navigation device 14 and the information center 62 to the network 43. An external communication unit 49 for wireless communication for connecting via a cable, and an external communication unit 50 for wired communication for connecting the navigation device 14 and the personal computer 61 via a serial connector, a cable or the like. The external communication unit 49 receives traffic information including information such as traffic congestion information, regulation information, parking lot information, traffic accident information, service area congestion, etc. transmitted from the VICS center, etc., news, General information such as weather forecasts can be received as FM multiplexed information.
[0051]
By the way, in the navigation system having the above-described configuration, when an operator operates the operation unit 73 of the personal computer 61 to select and input a predetermined area from which map data is to be acquired, for example, map data (not shown) of the CPU 71 is displayed. The request processing means performs map data request processing and transmits a predetermined request signal to the information center 62.
[0052]
When the request signal is received at the information center 62, the first information acquisition processing unit (not shown) of the server 63 performs the first information acquisition processing, refers to the map data file of the navigation data database 64, and Read and acquire the map data of the selected area. Subsequently, a map data transmission processing unit (not shown) of the server 63 performs a map data transmission process and transmits the map data to the personal computer 61 via the network 43.
[0053]
When the map data is transmitted, the first recording processing unit (not shown) of the CPU 71 performs the first recording processing and downloads the map data to the hard disk of the recording device 74. Subsequently, when the operator sets the memory card 48 in the recording device 74 and operates the operation unit 73 in a predetermined procedure, the first recording processing means stores the downloaded map data in the memory card 48. make a copy.
[0054]
Next, when the operator sets the memory card 48 in the external slot 45 of the navigation device 14, a second recording processing unit (not shown) of the CPU 31 performs a second recording process, and the map data is stored in the data recording unit. 16 is further copied.
[0055]
In the navigation system having the above-described configuration, for example, when an operator operates the operation unit 73 of the personal computer 61 to input a departure point and a destination, a route is searched for in the information center 62, and the search result is stored in the personal computer 61. It is supposed to be sent.
[0056]
For this purpose, when the operator operates the operation unit 73 of the personal computer 61 and inputs the departure place and the destination, the guidance condition setting processing unit 91 (FIG. 1) of the CPU 71 performs the guidance condition setting process. The destination is set as a guide condition, and the guide condition is transmitted to the information center 62. In this embodiment, in order to search for a route from the departure place to the destination, the departure place and the destination are set as guide conditions. In other embodiments, the departure place is Instead, the current location is set as the guidance start point. In that case, the guidance condition setting processing means 91 sets the current location and the destination as guidance conditions.
[0057]
When the guide condition is received at the information center 62, the first information acquisition processing means reads the search data and map data with reference to the search data file and map data file of the navigation data database 64, Acquire information necessary for searching. The first information acquisition processing means can also acquire the information by reading the statistical data with reference to the statistical data file or by reading the traffic information transmitted from the VICS center.
[0058]
Subsequently, a search condition setting processing unit (not shown) of the server 63 performs a search condition setting process to set a search condition. In the present embodiment, the search condition setting processing means, for example, the path length as the first search condition, the grade of the path, the degree of undulation, the presence or absence of the hoistway, The degree of elevation expressed by presence / absence or the like is set.
[0059]
Then, the search processing unit 92 of the server 63 performs a search process, and searches for a route based on the search data, traffic information, statistical data, and the like according to the guide conditions and the search conditions.
[0060]
For this purpose, the search processing means 92 depends on the link cost, road condition, road attribute, and road type assigned according to the link length of the link between node points on each road (hereinafter referred to as “road length”). The total cost of the candidate route (hereinafter referred to as “total cost”) is calculated based on the road cost and the traffic congestion cost given according to the traffic jam information. The route with the lowest total cost is set as the searched route.
[0061]
When searching for a route based on the first search condition, the search processing unit 92 calculates the total cost by increasing the weight of the link cost given to the road as the link is longer, and the route length is shorter. The route is searched as the first search route r1. When searching for a route based on the second search condition, the search processing unit 92 increases the cumulative value of the absolute value of the gradient at each point in the route (hereinafter referred to as “gradient cumulative value”). The total cost is calculated by increasing the weight of the road cost given to the road, and a route with a small gradient accumulated value is searched as the second search route r2, or the altitude difference between adjacent points in the route is calculated. The larger the accumulated absolute value (hereinafter referred to as “altitude difference accumulated value”), the greater the weight of the road cost assigned to the road, and the total cost is calculated. When a route with a small amount of movement is searched as the third search route r3, or when a hoistway such as a pedestrian bridge, an underground passage, or a staircase exists on the route, the weight of the road cost given to the road is increased and the total cost is increased. Calculate the route without a hoistway Or searching for a route or the like with a lifting machine as a fourth searched route r4.
[0062]
Subsequently, the route guidance data transmission processing unit (not shown) of the server 63 performs route guidance data transmission processing to obtain route data representing the first to fourth search routes r1 to r4 and each of the first to fourth searches. Additional information data representing additional information serving as auxiliary information for selecting a predetermined search route among the routes r1 to r4, and map data representing a map around each of the first to fourth search routes r1 to r4 The voice output unit 37 transmits voice output data and the like for guiding the searched route to the personal computer 61 as route guidance data.
[0063]
As the route data, road data constituting each of the first to fourth search routes r1 to r4, the position of each point of the first to fourth search routes r1 to r4, altitude, and the like are transmitted. Further, as the additional information data, a route length, a cumulative gradient value, an altitude difference cumulative value, etc. are transmitted, and the presence / absence of a hoistway, a hoisting machine, etc., the frequency of undulation (up / down) of the route, travel time, etc. Sent. Additional information is configured by the route length, the accumulated gradient value, the accumulated altitude difference value, the presence / absence of a hoistway, a hoisting machine, etc., the frequency of undulation of the route, the travel time, and the like.
[0064]
As the map data, mesh information including a search route and mesh information of a mesh adjacent to the mesh are transmitted. Each mesh is composed of map data of a region of a predetermined length of four, and each region is set so that the amount of map data, that is, the data amount is within a certain range, and for each mesh A parcel number is assigned as an identification number and is managed by the parcel number. The size of the area differs between an area with a lot of information contained in map data such as an urban area and an area with little information contained in map data such as a suburb. For example, if a mesh is configured for each data amount of 128 [kilobytes], in a standard area, the mesh is composed of 4 km square area map data, and in an area where there is a lot of information contained in the map data, the mesh is 2 kilometers. The mesh is composed of the map data of the 8 km square area in the area where the map data is composed of map data in all directions and the information contained in the map data is small.
[0065]
Further, the voice output data can be transmitted from the information center 62 to the personal computer 61, but the voice output data can also be recorded in advance in the data recording unit 16 of the navigation device 14, and in this case, the route guidance data There is no need to send as.
[0066]
When the route guidance data is transmitted, the first recording processing means of the CPU 71 downloads the route guidance data to the hard disk of the recording device 74. Subsequently, when the operator sets the memory card 48 in the recording device 74 and operates the operation unit 73 according to a predetermined procedure, the first recording processing unit stores the downloaded route guidance data in the memory card 48. To copy.
[0067]
Next, when the operator sets the memory card 48 in the external slot 45 of the navigation device 14, the second recording processing means of the CPU 31 performs the second recording processing, and the route guidance data is stored in the data recording unit 16. Copy further.
[0068]
Next, the operation of the navigation device 14 will be described.
[0069]
FIG. 4 is a first diagram illustrating an example of a search route selection screen according to the embodiment of the present invention, and FIG. 5 is a second diagram illustrating an example of a search route selection screen according to the embodiment of the present invention.
[0070]
First, when a power switch (not shown) is turned on, the navigation device 14 (FIG. 3) is activated, and the GPS card 46 detects the current location Pp. A second information acquisition processing unit (not shown) of the CPU 31 performs a second information acquisition process, and reads and acquires the route guidance data from the data recording unit 16.
[0071]
Subsequently, a display processing unit (not shown) of the CPU 31 performs display processing to form search route selection screens g1 and g2 as shown in FIG. 4 or 5 on the display of the display unit 35, and the search route selection screen g1, The first to fourth search paths r1 to r4 are displayed in a cross-sectional graph on g2.
[0072]
That is, in FIG. 4, AR1 is an altitude distribution graph showing examples of the first to third search paths r1 to r3 obtained by the search process, and the horizontal axis represents the first to third search paths r1 to r3. The distance representing the route length is taken as the altitude of each point of the first to third search routes r1 to r3 on the vertical axis. The altitude at the departure point is set to 0 [m], and the altitude at each point takes a positive value when it is higher than the departure point, and takes a negative value when it is lower than the departure point.
[0073]
In the altitude distribution graph AR1, lines L1 to L3 represent the altitude distributions of the first to third search routes r1 to r3. It can be seen from the line L1 that the first search route r1 is the route having the shortest route length although the gradient accumulated value and the altitude difference accumulated value are large. Further, it can be seen from the line L2 that the second search route r2 has the longest route length but the smallest gradient accumulated value. It can be seen from the line L3 that the third search route r3 is the route having the longest route length but the smallest accumulated difference in altitude.
[0074]
K1 is a selection key for selecting the first to third search paths r1 to r3, and k2 is a confirmation key for confirming (OK) the selected search path.
[0075]
Accordingly, when the operator views the altitude distributions of the first to third search paths r1 to r3 displayed by the altitude distribution graph AR1 and touches a predetermined portion of the selection key k1 with the stylus pen, the predetermined search path Then, when the confirmation key k2 is touched with a stylus pen, the search route is fixed.
[0076]
In FIG. 5, AR2 is an altitude distribution graph showing examples of the first, second, and fourth search paths r1, r2, and r4 obtained by the search process, and the horizontal axis represents the first, second, The distances representing the route lengths of the fourth search routes r1, r2, and r4 are plotted on the vertical axis as the altitudes of the first, second, and fourth search routes r1, r2, and r4.
[0077]
In the altitude distribution graph AR2, lines L11 to L13 represent the altitude distributions of the first, second, and fourth search routes r1, r2, and r4. It can be seen from the line L11 that the first search route r1 is a route with a short pedestrian bridge at the point p1 and an underpass at the point p2. Further, it can be seen from the line L12 that the second search route r2 has a long route length but a small gradient accumulated value. The line L13 indicates that the fourth search route r4 has a long route length but no hoistway, has a small gradient accumulation value, and has an elevator at the point p3. Characters such as pedestrian bridges, underpasses, and elevators are displayed as additional information corresponding to the points p1 to p3.
[0078]
K11 is a selection key for selecting the first, second, and fourth search paths r1, r2, and r4, and is adjacent to the selection key k11 as additional information. The route lengths and height difference accumulated values of the fourth search routes r1, r2, r4 are displayed. K12 is a confirmation key for confirming the selected search route.
[0079]
Therefore, the altitude distribution of the first, second, and fourth search paths r1, r2, and r4 displayed by the altitude distribution graph AR2 and the first, second, and fourth search paths r1, r2 , The path length of r4 and the accumulated altitude difference value, touching a predetermined portion of the selection key k11 with a stylus pen, a predetermined search path is selected, and then touching the confirmation key k12 with a stylus pen, The search route is determined.
[0080]
The display processing means constitutes output processing means 93 (FIG. 1). The output processing means 93 performs output processing and outputs first to fourth search paths r1 to r4. Then, the output processing means 93 outputs the first to fourth search routes r1 to r4 by voice instead of displaying the first to fourth search routes r1 to r4 on the search route selection screens g1 and g2. can do. In that case, the features such as the undulations of the first to fourth search routes r1 to r4, the route length, and the additional information are output by voice and notified to the operator.
[0081]
As described above, since the altitude distributions of the first to fourth search paths r1 to r4 are displayed in a graph, the operator recognizes whether or not there are points having relatively different altitudes on the search path. be able to.
[0082]
And when walking from the departure point to the destination, if a predetermined search route is selected, whether it is necessary to move up and down the hoistway such as stairs, it is necessary to move downhill, uphill, etc. It is possible to select a predetermined search route depending on the lifting conditions such as whether or not it can be moved using a lifting machine, whether it is necessary to move while holding a large load, etc. It is possible to surely obtain a search route preferable for a person.
[0083]
In this way, when a predetermined search route is selected, the display processing means forms a map screen (not shown) of the display unit 35, displays the current location and the selected search route on the map screen, Display a map of.
[0084]
Therefore, the operator can recognize not only the current location Pp but also the surrounding situation, and can walk to the destination according to the searched route.
[0085]
The map screen and the search route selection screen can be displayed in two screens based on the designation by the operator.
[0086]
Further, in the present embodiment, characters such as hoistway and elevator machine are displayed as additional information in addition to the path length and altitude difference accumulated value, but the travel time is displayed as additional information. You can also. Of the additional information, the accumulated difference in altitude, hoistway, hoisting machine, etc. represent altitude indices based on altitude differences between different altitudes in the first to fourth search paths r1 to r4. .
[0087]
When the present invention is applied to a navigation device mounted on a vehicle, when driving the vehicle from the departure place to the destination, between high-speed and toll roads such as expressways and toll roads between relatively different altitudes Depending on the lifting conditions, such as whether it is necessary to move using, for example, whether it is necessary to move on a snowy road in a mountainous area, whether it is possible to move on a road with sufficient width, etc. The search route can be selected. Therefore, a search route preferable for the driver can be obtained with certainty.
[0088]
In the present embodiment, the route guidance data recorded on the memory card 48 is copied to the data recording unit 16, and the second information acquisition processing means reads the route guidance data from the data recording unit 16. However, in another embodiment, the navigation device 14 and the information center 62 are connected via the network 43, and the route guidance data transmitted by the route guidance data transmission processing means of the server 63 is used as the navigation device 14. And the second information acquisition processing means.
[0089]
In still another embodiment, the navigation device 14 and the personal computer 61 are connected via a wireless LAN, and route guidance data transmitted from the personal computer 61 is received via the external communication unit 49 of the navigation device 14. And acquired by the second information acquisition processing means.
[0090]
【The invention's effect】
As described above in detail, according to the present invention, in the navigation system, the search route is searched using the altitude data, and the altitude distribution of the search route is output, so that the navigation system moves from the guidance start point to the guidance end point. In doing so, a search path preferable for the operator can be obtained with certainty.
[0091]
【The invention's effect】
As described above in detail, according to the present invention, since the altitude distribution of the search route is output in the navigation system, a preferable search route for the operator is surely ensured when moving from the guidance start point to the guidance end point. Obtainable.
[Brief description of the drawings]
FIG. 1 is a functional block diagram of a navigation system in an embodiment of the invention.
FIG. 2 is a conceptual diagram of the navigation system in the embodiment of the present invention.
FIG. 3 is a block diagram of the navigation device according to the embodiment of the present invention.
FIG. 4 is a first diagram illustrating an example of a search route selection screen according to the embodiment of the present invention.
FIG. 5 is a second diagram illustrating an example of a search route selection screen according to the embodiment of the present invention.
[Explanation of symbols]
14 Navigation device
31, 71 CPU
43 Network
61 PC
62 Information Center
63 servers
91 Guide condition setting processing means
92 Search processing means
93 Output processing means
r1 to r4 First to fourth search routes

Claims (6)

Guidance condition setting processing means for setting a guidance start point and a guidance end point, search processing means for searching a search route based on navigation data including the guidance start point, guidance end point, and altitude data of the spot, and the search Output processing means for outputting the altitude distribution of the route, and the search processing means uses a cumulative value of absolute values of altitude differences between adjacent points in the route obtained based on the altitude data. A navigation system characterized in that the search route is searched by changing the road cost . A guide condition setting processing means for setting a draft in the start point and the guidance end point, the guidance start point, and search processing means for searching the plurality of searched routes on the basis of the navigation data including guidance end point, and altitude data point Output processing means for outputting an altitude distribution for each searched route, wherein the search processing means is obtained based on the altitude data , and the cumulative absolute value of the gradient at each point in the route and the route A navigation system for searching for the search route by changing a road cost using a cumulative value of absolute values of altitude differences between adjacent points . Before SL output processing means, the navigation system according to claim 2 for outputting the additional information indicating the altitude indication for selecting a predetermined search path of the search path. Information acquisition processing means for acquiring route guidance data including at least route data representing a searched route searched based on navigation data including guidance start point, guidance end point, and altitude data of the point, and altitude distribution of the searched route A navigation device having an output processing means for outputting a road cost by using a cumulative value of an absolute value of an altitude difference between adjacent points in the route obtained based on the altitude data. navigation system the search path is characterized Rukoto searched. A guidance start point and a guidance end point are set, a search route is searched based on navigation data including the guidance start point, the guidance end point, and altitude data of the point, and the altitude distribution of the search route is output, and Search information output characterized by searching for the search route by changing the road cost using the cumulative value of the absolute value of the difference in height between adjacent points in the route obtained based on the altitude data Method. Guidance condition setting processing means for setting a guidance start point and guidance end point, search processing means for searching for a search route based on navigation data including the guidance start point, guidance end point, and altitude data of the point; and In addition to functioning as output processing means for outputting the altitude distribution of the searched route, the search processing means is obtained based on the altitude data, and is a cumulative value of absolute values of altitude differences between adjacent points in the route. A program for searching for the search route by changing a road cost by using the program.

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