JP2008045992A - Navigation server, navigation device, and navigation system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a navigation system or the like capable of guiding a moving device to its target position along a more suitable route, from a viewpoint of energy economy. <P>SOLUTION: In the navigation system, the second auxiliary processing part 120 evaluates an ecology index ECO of the second moving device Q<SB>2</SB>in each link according to an evaluation function based on operation information of the first moving device Q<SB>1</SB>in each link and discrimination information of the second moving device Q<SB>2</SB>. The ecology index ECO in each link is transmitted to a navigation device 200 loaded on the second moving device Q<SB>2</SB>, and a recommendation route candidate having the highest total ΣECO of each ecology index ECO among a plurality of recommendation route candidates in the navigation device 200 is output as the recommendation route. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a navigation server that manages information for guiding a mobile device in cooperation with a navigation device mounted on the mobile device, the navigation device, and a navigation system that includes the navigation server and the navigation device. About.

  Reducing the fuel consumption of automobiles has become an important issue as the public awareness of global environment conservation and effective use of energy resources has increased.

  Therefore, conventionally, the eco-index of the vehicle is stored in the database in correspondence with each point or route of the map information, the eco-index of the point or route designated by the user is searched from the database, and the searched eco-index is searched. Has been proposed (see Patent Document 1, for example).

In addition, the information center searches for a route that is predicted to have the lowest fuel consumption of the vehicle in view of the fuel consumption data registered in the database, and the navigation device mounted on the vehicle receives the search result from the information center and displays it. The technique which performs is proposed (for example, refer patent document 2).
Japanese Patent Laid-Open No. 2002-350152 Paragraphs 0077 to 0079 JP 2005-163584 A paragraphs 0072 to 0075

  However, even if the identification information of the vehicle is the same and the road is the same, the fuel consumption varies depending on the operation state of the vehicle such as the acceleration and deceleration patterns of the vehicle. For this reason, even if a route is searched or set without considering the driving state of each vehicle, the route may actually be inappropriate from the viewpoint of driving a vehicle with low fuel consumption.

  Accordingly, the present invention provides a navigation server, a navigation device, and the navigation server that can contribute to guiding the mobile device along a more appropriate route from the viewpoint of energy economy of the mobile device such as an automobile to the target position. It is an object of the present invention to provide a navigation system including the navigation device.

  A navigation server according to a first aspect of the present invention for solving the above problem is a navigation server that manages information for guiding a mobile device in cooperation with a navigation device mounted on the mobile device, the first mobile device The first auxiliary processing unit for recognizing the speed and acceleration or deceleration of the first mobile device as the operation information in each link through which the first mobile device has passed through communication with the second mobile device. 2. Recognizing the identification information of the second mobile device, based on the identification information of the second mobile device and the operation information of the first mobile device in each link recognized by the first auxiliary processing unit And the energy of the second mobile device in each link in accordance with an evaluation function with the speed and acceleration or deceleration as independent variables and the energy index as a dependent variable. A second auxiliary processing unit that evaluates the index and transmits the energy index in each link or traffic information corresponding to the energy index to a navigation device mounted on the second mobile device; It is characterized by.

  According to the navigation server of the first invention, the first auxiliary processing unit recognizes “operation information” of the first mobile device in each link through which the first mobile device has passed through communication with the first mobile device. The “operation information” of the moving device specifies the speed and acceleration or deceleration of the moving device. Communication with a mobile device means communication with a communication device mounted on the mobile device or a device having a communication function. “Link” means a road element connecting two arbitrary points on the road, such as an intersection or a branch point. “Operational information” includes the state quantities of all mobile devices that can vary depending on traffic conditions (congestion level, required travel time) and road types (highways, general roads, uphill, downhill, etc.). sell.

  Subsequently, the second auxiliary processing unit recognizes “identification information” of the second mobile device through communication with the second mobile device. In addition, the second auxiliary processing unit is configured to determine the second mobile device in each link according to the evaluation function based on the identification information of the second mobile device and the operation information of the first mobile device in each link recognized by the first auxiliary processing unit. 2. Evaluate the “energy index” of the mobile device. Furthermore, the second auxiliary processing unit transmits the energy index in each link or traffic information corresponding to the energy index to the navigation device mounted on the second mobile device.

  Note that the component of the present invention “recognizes” information means that the component receives information, retrieves or reads information from a database or memory, and performs information processing by arithmetic processing based on received basic information. Prepare the information for other information processing, such as calculating, estimating, measuring, setting, and determining, decoding the packet to reveal the information, and saving the calculated information in the memory This means that all information processing is performed. The “energy index” means a variable that varies depending on the energy cost. Furthermore, the “evaluation rule” means a rule that defines the relationship between identification information, operation information, and energy index of an arbitrary mobile device.

  By reflecting the latest speed and acceleration or deceleration of the first mobile device in each link as described above, the energy index varies depending on the speed of the mobile device and the acceleration or deceleration. In view of the above, the energy index of the second mobile device in each link can be appropriately evaluated. Also, since the speed and acceleration or deceleration can be easily measured, the energy index can be easily evaluated. Therefore, from the viewpoint of energy economy of the second mobile device, traffic information such as an appropriate recommended route for guiding the second mobile device to its target position can be output to the navigation device. Thus, by following the recommended route displayed on the navigation display to the driver of the second mobile device, the latest operation information obtained from the first mobile device, as well as the latest traffic situation, etc. (or the mobile device The second mobile device can be appropriately moved to the target position from the viewpoint of energy economy reflecting the past traffic situation according to the estimated time until each link is reached.

  Further, the navigation server of the second invention is the navigation server of the first invention, wherein the first mobile device in each link through which the first mobile device has passed by the first auxiliary processing unit communicating with the first mobile device. The position of each predetermined time is recognized, and the operation information is recognized based on the position of the predetermined time.

  According to the navigation server of the second invention, the second mobile device in each link is obtained by recognizing the position of the first mobile device every predetermined time, that is, by intermittently tracking the first mobile device. The energy index can be appropriately evaluated.

  Furthermore, in the navigation server of the third invention, in the navigation server of the first or second invention, the second auxiliary processing unit calculates the identification information and a coefficient corresponding to the speed and acceleration or deceleration of the arbitrary mobile device. And evaluating the energy index of the second mobile device in each link using a first-order function or a second-order function or more with the speed or acceleration or deceleration as an independent variable. To do.

  According to the navigation server of the third invention, the coefficient of the evaluation function is set according to the speed and acceleration or deceleration of the first mobile device, so that the speed or acceleration or deceleration is an independent variable, and the energy index is An evaluation function is set as a dependent variable. Accordingly, the energy index of the second mobile device can be appropriately evaluated according to the table function based on the speed as the operation information of the first mobile device.

  A navigation device according to a fourth aspect of the present invention for solving the above problem is mounted on the second moving device, and displays a recommended route for guiding the moving device from an initial or current position to a target position on a navigation display. A first processing unit that recognizes the initial or current position and the target position of the second mobile device and sets a plurality of recommended route candidates that connect the initial or current position and the target position; , By recognizing the energy index in each link by communication with any one of the first to third inventions, and based on the energy index in each link, the set by the first processing unit The energy index is comprehensively evaluated for each of the plurality of recommended route candidates, and the recommended route candidate having the highest comprehensive evaluation is determined as the recommended route. Characterized in that a second processing unit that sets in.

  According to the navigation device of the fourth invention, it is evaluated based on the actual operation information of the first mobile device at each link as described above, in cooperation with any one of the first to third inventions of the navigation server. Based on the energy index, an optimum recommended route can be set and output in view of the overall evaluation of the energy index in a plurality of links connecting the initial or current position and the target position.

  A navigation system according to a fifth aspect of the present invention for solving the above-described problems is characterized by comprising any one of the navigation servers of the first to third aspects and the navigation apparatus according to the fourth aspect.

  According to the navigation system of the fifth aspect of the invention, the second mobile device is appropriately brought to its target position from the viewpoint of energy economy by cooperation between the navigation server of the first, second or third aspect of the invention and the navigation device of the fourth aspect of the invention. Can be guided.

  Embodiments of a navigation server, navigation device, navigation program, navigation device construction method, server, and navigation system according to the present invention will be described with reference to the drawings.

  FIG. 1 is a configuration explanatory diagram of the navigation system of the present invention, and FIGS. 2 to 5 are functional explanatory diagrams of the navigation system of the present invention.

  The configuration of the navigation system of the present invention will be described with reference to FIG.

  The navigation system shown in FIG. 1 includes a navigation server 100 and a navigation device 200 mounted on an automobile (mobile device) Q. Note that the moving device may include any device having a function of moving in response to an operation by a user, such as a two-wheeled vehicle, in addition to a four-wheeled vehicle.

  The navigation server 100 is composed of one or a plurality of server computers (CPU, ROM, RAM, I / O, etc.), and includes a first auxiliary processing unit 110, a second auxiliary processing unit 120, and the like. It has.

The first auxiliary processing unit 110 recognizes the position (longitude, latitude) p (t) of the first automobile Q ₁ at predetermined time intervals through communication with the first automobile (first mobile device) Q ₁ . Further, the first auxiliary processing unit 110 recognizes the links to which the first car Q ₁ is passed on the basis of the position p of each predetermined time of the first car Q ₁ (t), and the in each such link the The speed v and acceleration α of one automobile Q ₁ are calculated or recognized as “operation information”.

The second auxiliary processing unit 120 recognizes the identification information ID of the second automobile Q ₂ through communication with the second automobile (second mobile device) Q ₂ . Further, the second auxiliary processing unit 120 sets the evaluation function f based on the identification information ID and the speed v and acceleration α of the first automobile Q ₁ in each link calculated by the first auxiliary processing unit 110. Further, the second auxiliary processing unit 120 evaluates the eco index (energy index) ECO in each link according to the evaluation function f based on the speed v and the acceleration α of the first automobile Q ₁ . Also, the second auxiliary processing unit 120 transmits the ecological index ECO to the navigation apparatus 200 mounted on the second car Q ₂ in the link.

  The navigation device 200 is stored in a memory and an ECU or computer (configured by CPU, ROM, RAM, I / O, etc.) as hardware mounted on the automobile Q, and gives various functions to the computer. It is comprised with the navigation program which is software. The navigation program may be stored in the memory (ROM) of the in-vehicle computer from the beginning. However, a part or all of the program may be stored in a server (not shown) at an arbitrary timing such as when a request is received from the in-vehicle computer. ) May be downloaded to the in-vehicle computer via a network or satellite broadcast and stored in the memory (RAM) or the like.

  The navigation device 200 includes a navigation display 202, a first processing unit 210, and a second processing unit 220.

  The first processing unit 210 recognizes the current position TP (or initial position) and the target position TP of the automobile Q, and sets a plurality of “recommended route candidates” that connect the current position PP and the target position TP.

  The second processing unit 220 recognizes the eco index ECO in each link through communication with the navigation server 100, and based on the eco index ECO, calculates the eco index for each of the plurality of recommended route candidates set by the first processing unit 210. Comprehensive evaluation. In addition, the second processing unit 220 sets a recommended route candidate having the highest comprehensive evaluation based on the eco-index among a plurality of recommended route candidates as a recommended route.

Note that the navigation device 200 mounted on any vehicle Q has a function of recognizing the current position as the navigation device 200 mounted on the first vehicle Q ₁ and transmitting it to the navigation server 100. In addition, the navigation device 200 installed in an arbitrary vehicle Q causes the navigation server 100 to recognize the identification information as the navigation device 200 installed in the second vehicle Q ₂ , and communicates with the navigation server 100. It has the function of recognizing the eco-index on the link and setting the recommended route.

  The functions of the navigation system configured as described above will be described with reference to FIGS.

  In the navigation server 100, the first auxiliary processing unit 110 executes “first auxiliary processing” as described below (FIG. 2 / S110).

First auxiliary processing unit 110 from the first car Q _1, the (specified by longitude and latitude) a first position every predetermined time of the car Q ₁ receives the p (t) (Fig. 1 / arrow A1). The current position p (t) of the first automobile Q ₁ can be measured by the navigation device 200 mounted thereon based on the GPS function, the output of the gyro sensor, and the like. Further, the first auxiliary processing unit 110 reads the server map information from the memory, each said first car Q ₁ on the basis of the server map information and the first time-sequential positions p of the car Q ₁ (t) has passed The link is recognized (S111 in FIG. 2). By the server map information, it is possible to specify a link on which a combination of latitude and lightness corresponds among a number of links included in the map. Further, the first auxiliary processing unit 110 calculates the operation information of the first velocity v and acceleration of the car Q ₁ alpha in the respective link based on the first time series position p of the car Q ₁ (t) in each link (FIG. 2 / S112). The acceleration α is defined as acceleration with “+” and deceleration with “−”. The first auxiliary processing unit 110, the speed v and the acceleration α measured based on the output of such speed sensor mounted on the first car Q _1, and received from the first car Q _1, this May be recognized as the velocity v and acceleration α in each link.

In the navigation apparatus 200 mounted on the second car Q _2, for example in response to the target position TP is set by the user, executes the "first treatment" as the first processing unit 210 will be described (FIG. 2 / S210).

The first processing unit 210 recognizes the second current position TP (or initial position) of the motor vehicle Q ₂ and the set target position TP (FIG. 2 / S211). Further, the first processing unit 210 reads the navigation map information from the memory, and sets a plurality of “recommended route candidates” connecting the current position PP and the target position TP based on the navigation map information (S212 in FIG. 2). Thus, for example, a plurality of recommended route candidates R1~R3 connecting the current position PP and the target position TP of the second car Q _2, as shown in FIG. 3 is set.

Identification information ID of the second car Q ₂ is transmitted from the navigation apparatus 200 to the navigation server 100 according to the execution start of the first process in the navigation device 200 (FIG. 2 / arrow A2), the second auxiliary processing accordingly The unit 120 executes a “second auxiliary process” as described below (FIG. 2 / S120).

The second auxiliary processing unit 120 recognizes the identification information ID of the second automobile Q ₂ , and then the identification information ID and the speed v of the first automobile Q ₁ at each link calculated by the first auxiliary processing unit 110. Then, the evaluation function f is set based on the acceleration α (FIG. 2 / S121). The evaluation function f is a function having the velocity v and the acceleration α as independent variables and the eco-index ECO as a dependent variable as represented by the following equation (1). The evaluation function f can be defined such that the eco index ECO is evaluated higher as the fuel efficiency of the automobile Q is lower. Note that the evaluation function f may be defined such that the eco-index ECO is evaluated lower as the fuel consumption of the automobile Q is lower.

ECO = f (v, α) (1)
More specifically, the coefficient _ck is set as a dependent variable having the velocity v and the acceleration α as independent variables as represented by the following expression (2), and the coefficient is expressed as represented by the following expression (3). The evaluation function f is set or defined as a k-th order function (k = 2,...) of the speed v having c _k .

c _k = c _k (v, α) (2)
f (v, α) ≡c _k v ^k + c _k−1 v ^k−1 +... + c ₀ (3)
Subsequently, the second auxiliary processing unit 120 evaluates the eco index ECO according to the evaluation function f based on the speed v and the acceleration α (FIG. 2 / S122). Thereby, for example, the eco-index ECO having the characteristics as shown in FIG. 4 is evaluated according to the speed v and the acceleration α. According to the characteristic curve (evaluation function) shown in FIG. 4, the eco index ECO is evaluated to be lower as the acceleration α is higher, and is generally evaluated to be lower as the speed v is higher.

Then, the second auxiliary processing unit 120 transmits to the navigation apparatus 200 mounted eco index ECO assessed in the second car Q ₂ to which is identified by the identification information ID for each link (FIG. 2 / arrow A3).

  In response to the eco-index ECO transmitted from the navigation server 100 being received by the navigation device 200, the second processing unit 220 executes “second processing” as described below (FIG. 2 / S220).

  The second processing unit 220 recognizes the eco index ECO in each link through communication with the navigation server 100, and based on the eco index ECO, the eco index ECO for each of the plurality of recommended route candidates set by the first processing unit 210. Are comprehensively evaluated (FIG. 2 / S221). Further, the second processing unit 220 sets and outputs the recommended route candidate having the highest comprehensive evaluation based on the eco-index among the plurality of recommended route candidates as the “recommended route” (S222 in FIG. 2). As a result, among the plurality of recommended route candidates R1 to R3 shown in FIG. 3, for example, the recommended route candidate R3 having the highest total ΣECO of the eco-index ECO is displayed on the navigation display 202 as the recommended route.

  Note that the recommended route R3 and the recommended route candidates R1 and R2 are displayed on the navigation display 202 in a form that can be distinguished from each other by color or the like, and the total sum ΣECO of each eco-index ECO of each route R1 to R3 is also displayed. It may be displayed on the display 202.

According to the navigation system that exhibits the above function, the energy index ECO is reflected by reflecting the position p (t) of the first automobile Q ₁ at each link at each predetermined time, as well as the speed v and the acceleration α, as described above. In view of the fact that changes in accordance with the speed v of the occupant's vehicle Q and the acceleration α, the eco-index ECO of the second vehicle Q ₂ at each link can be appropriately evaluated (FIG. 2 / S110). , S120). Further, since the speed v and acceleration α of the automobile Q can be easily measured, the energy index ECO can be easily evaluated. Therefore, in view of the second car Q ₂ energy economy, it is possible to output an appropriate recommended route for guiding the second car Q ₂ to a target position TP to the navigation device 200 (FIG. 2 / S222, FIG. 3). Thus, by following the recommended route displayed on the navigation display 202 to the driver of the second car Q ₂ , the latest speed v and acceleration α obtained from the first car Q ₁ , as well as the latest traffic conditions, etc. Appropriately move the second car Q ₂ to its target position from the viewpoint of energy economy that reflects (or the past traffic situation according to the estimated time until the second car Q ₂ reaches each link) Can be made.

  Note that the link is selected, and only the eco index ECO in the selected link may be transmitted from the navigation server 100 to the navigation device 200. For example, the second auxiliary processing unit 120 recognizes recommended route candidates R1 to R3 as shown in FIG. 5 through communication with the navigation device 200, and includes a mesh that includes a part of the recommended route candidates R1 to R3 ( It is also possible to specify only the eco-index ECO in the selected link and transmit it to the navigation device 200 after specifying the link included in the specific area. Thereby, information processing resources required for communication and storage of the eco-index ECO in each of the navigation server 100 and the navigation device 200 can be saved.

Configuration explanatory diagram of the traffic information management system of the present invention Functional explanatory diagram of the traffic information management system of the present invention Functional explanatory diagram of the traffic information management system of the present invention Functional explanatory diagram of the traffic information management system of the present invention Functional explanatory diagram of the traffic information management system of the present invention

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 ... Navi server, 110 ... 1st auxiliary processing part, 120 ... 2nd auxiliary processing part, 200 ... Navi apparatus, 202 ... Navi display, 210 ... 1st processing part, 220 ... 2nd processing part, Q ... Car (moving) Equipment), Q ₁ ... 1st car (first mobile equipment), Q ₂ ... 2nd car (second mobile equipment)

Claims (5)

A navigation server that manages information for guiding a mobile device in cooperation with a navigation device mounted on the mobile device,
A first auxiliary processing unit for recognizing the speed and acceleration or deceleration of the first mobile device in each link that the first mobile device has passed through communication with the first mobile device as operation information;
Recognizing the identification information of the second mobile device through communication with the second mobile device, the identification information of the second mobile device and the first mobile device in each link recognized by the first auxiliary processing unit Based on the operation information, the energy index of the second mobile device in each link is determined according to an evaluation function with the speed and acceleration or deceleration of any mobile device as independent variables and the energy index as a dependent variable. And a second auxiliary processing unit that evaluates and transmits the energy index in each link or traffic information corresponding to the energy index to a navigation device mounted on the second mobile device. A navigation server.   The first auxiliary processing unit recognizes the position of the first mobile device at each predetermined time in each link through which the first mobile device has passed through communication with the first mobile device, and based on the position at the predetermined time. The navigation server according to claim 1, wherein the operation information is recognized.   The second auxiliary processing unit has a coefficient corresponding to the identification information and the speed and acceleration or deceleration of the arbitrary mobile device, and uses the speed or acceleration or deceleration as an independent variable. The navigation server according to claim 1 or 2, wherein the energy index of the second mobile device in each link is evaluated using the above function as the evaluation function. A navigation device mounted on the second mobile device and having a function of displaying a recommended route for guiding the mobile device from an initial or current position to a target position on a navigation display,
A first processing unit for recognizing the initial or current position and the target position of the second mobile device and setting a plurality of recommended route candidates connecting the initial or current position and the target position;
The energy index in each link is recognized by communication with the navigation server according to any one of claims 1 to 3, and is set by the first processing unit based on the energy index in each link. A navigation apparatus comprising: a second processing unit that comprehensively evaluates an energy index for each of the plurality of recommended route candidates and sets the recommended route candidate having the highest overall evaluation as the recommended route. .   A navigation system comprising the navigation server according to any one of claims 1 to 3 and the navigation device according to claim 4.

Images