JP4992099B2 - Comfortable walking route search server and program - Google Patents

Description

  The present invention relates to a comfortable walking route search server and a program for searching for a walking route with a relatively low temperature or a route with few pedestrians and providing it as a recommended route.

  As navigation systems for pedestrians and navigating with a mobile phone, those described in JP 2002-98547 A (Patent Document 1) and JP 2002-286491 A (Patent Document 2) are known. ing. These use road congestion as a search condition. Furthermore, Patent Document 1 describes a technique for searching for an optimum route to a destination by weighting a road according to various desired conditions of a pedestrian such as a degree of congestion. However, the conventional portable navigation system collects and stores road congestion and other environmental conditions in advance.

Considering the actual road environment, the pedestrian density varies greatly depending on the time zone. The pedestrian density on the road leading to the railway station is high during commuting and attending school hours, but the pedestrian density on the road where department stores and supermarkets are present is high during the daytime period. Furthermore, if there are some events, the density may be significantly different from normal. However, since the conventional mobile navigation system collects and stores road congestion and other environmental conditions in advance as described above, there is no real-time property and there is a problem of poor practicality. Conventionally, there is no known navigation system that recommends a relatively cool route in consideration of real-time temperature conditions.
JP 2002-98547 A JP 2002-286491 A

  The present invention has been made in view of the above-described problems of the prior art, and provides a comfortable walking route search server and program that can search a walking route with a relatively low temperature in real time or a route with few pedestrians and propose it as a recommended route. The purpose is to provide.

One feature of the present invention is that it is installed at an appropriate location on the roadside, measures the ambient temperature, periodically transmits the measured temperature data with its own identification number, and the many Real-time measured temperature data is collected from the temperature sensors via a network and periodically stored in comparison with the identification number of the temperature sensor, and the measured temperature data of each of the multiple temperature sensors is set as the section temperature. A route search that specifies a road section to be stored, a temperature section database that stores comparison data between the identification numbers of the plurality of temperature sensors, a map database that stores road map information, and a departure point and a destination point from the terminal In response to the command, a route search unit that searches the map database and extracts a plurality of routes from the departure point to the destination point, and the route search For each plurality of routes stage extraction, with reference to the temperature zone database and temperature database, adds weight to the appropriate section distance according to the level of the latest real-time measured temperature data at each passage section, the A comfortable walking route search server comprising: an optimum route selection unit that finds a route having a minimum section distance with a weight added; and a recommended route output unit that transmits the route found by the optimum route selection unit to the terminal as a recommended route. is there.

Another feature of the present invention is that each of a number of temperature sensors that are installed in advance at appropriate locations on the roadside, measure the ambient temperature, and periodically transmit the measured temperature data with its own identification number. Registering a road section having temperature data as a section temperature with reference data of identification numbers of each of the plurality of temperature sensors in the temperature section database; registering road map information in the road map database in advance; Temperature data collection step of collecting real-time measured temperature data sent from the temperature sensor of the network via the network and periodically storing it in the temperature database in comparison with the identification number of the temperature sensor, and a departure point from the terminal In response to a route search command that specifies a destination and a destination, the map database is searched for the destination from the destination A route searching step of extracting a plurality of routes to the relative path search each of the plurality of paths extracted in step, with reference to the temperature zone database and temperature database, the latest real-time measurements in each pass section A weight is added to the corresponding section distance according to the level of temperature data, an optimum route selection step for finding a route with the smallest section distance to which the weight is added, and a route found in the optimum route selection step as a recommended route A comfortable walking route search program for causing a computer to execute a recommended route output step to be transmitted to a terminal.

Another feature of the present invention is that a large number of pedestrians are installed at appropriate locations on the road edge, measure the pedestrian density on the road, and periodically transmit density measurement data with their own identification numbers. A density sensor, a pedestrian density database that collects real-time density measurement data from the multiple pedestrian density sensors via a network, and periodically stores them in comparison with an identification number of the pedestrian density sensor; A road section in which real-time density measurement data of each of a large number of pedestrian density sensors is used as a section pedestrian density, a section pedestrian density database that stores reference data of identification numbers of the plurality of pedestrian density sensors, and a road In response to a map database that stores map information and a route search command that specifies a starting point and a destination point from the terminal, the map database is searched before A route search unit that extracts a plurality of routes from a departure point to a destination point, and a plurality of routes extracted by the route search means, referring to the section pedestrian density database and the pedestrian density database, and passing A weight is added to the corresponding section distance according to the density of the latest real-time density measurement data in each section, and an optimum route selection unit for finding a route with the smallest section distance to which the weight is added, and the optimum route selection unit A comfortable walking route search server including a recommended route output unit that transmits a found route as a recommended route to a terminal.

Still another feature of the present invention is that the pedestrian density is installed in advance at an appropriate location on the road edge, measures the pedestrian density, and periodically transmits the density measurement data with its own identification number. Registering the road section in which the real-time density measurement data of each sensor is the section pedestrian density and the reference data of the identification numbers of the plurality of pedestrian density sensors in the section pedestrian density database, and road map information in advance In the road map database, real-time density measurement data sent from the multiple pedestrian density sensors is collected via a network, and the identification number of the pedestrian density sensor is compared with the pedestrian density database. Pedestrian density data collection step that is periodically saved and a route that specifies the starting point and destination point from the terminal In response to a search command, a route search step for searching the map database to extract a plurality of routes from the departure point to a destination point, and for each of the plurality of routes extracted in the route search step, the section By referring to the pedestrian density database and the pedestrian density database, a weight is added to the corresponding section distance in accordance with the density of the latest density measurement data in each passing section, and a route in which the section distance to which the weight is added is the smallest is added. A comfortable walking route search program that causes a computer to execute an optimum route selection step to be found and a recommended route output step of transmitting the route found in the optimum route selection step as a recommended route to a terminal.

  According to the comfortable walking route search server and program of the present invention, a map database is searched to extract a plurality of routes from a departure point to a destination point, and real-time temperature data is stored for each of the extracted plurality of routes. Referring to the temperature section database and the temperature database that are being used, a weight is added to the corresponding section distance according to the level of the measured temperature data in each of the passing sections, and a route where the section distance to which the weight is added is minimized is found, Since it is transmitted to the terminal as a recommended route, it is possible to recommend a relatively cool walking route considering real-time temperature conditions to the user terminal.

  Further, according to the comfortable walking route search server and program of the present invention, a plurality of routes from the starting point to the destination point are extracted by searching the map database, and a real-time pedestrian is extracted for each of the extracted routes. Referring to the pedestrian density database and the pedestrian density database that store density data, a weight is added to the corresponding section distance according to the density of density measurement data in each passing section, and the section distance with the weight added Since the route with the smallest pedestrian is found and transmitted to the terminal as the recommended route, it is possible to recommend a walking route with relatively little traffic to the user terminal in consideration of the real-time pedestrian congestion.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  (First Embodiment) A comfortable walking route search system based on an air temperature condition according to a first embodiment of the present invention will be described with reference to FIGS. FIG. 1 shows a comfortable walking route search system, in which a large number of wireless devices are distributed in an appropriate distribution on the roadside where a pedestrian may walk, for example, on a roadside such as a sidewalk or a roadway without a sidewalk. A temperature sensor 1 is installed. The wireless temperature sensor 1 is installed at each point where the temperature is predicted to have a difference in elevation. For example, it is installed in places with many trees, places without trees, valleys of buildings, parks, banks of streams and moats. The wireless temperature sensor 1 measures the outside air temperature, and periodically transmits the air temperature measurement data together with the identification number ID assigned to the own sensor wirelessly at a predetermined frequency.

  A wireless signal of the measured temperature data from each of the number of wireless temperature sensors 1 within the accommodation limit is received by the wireless router 2, and the wireless router 2 receives the measured temperature data and sensor IDs from each of the received many wireless temperature sensors 1. Further, the identification number ID of the own router is added, and it is transferred to another router 2 or the representative router 3. The representative router 3 adds the identification number ID of its own router to the received measured temperature data, sensor ID, and identification number ID of the transfer router 2 from each of the plurality of wireless temperature sensors 1, and the wireless router 4 and the Internet network 5 is transmitted to the comfortable walking route search server 6 of a specific address.

  The comfortable walking route search server 6 has the functional configuration shown in FIG. 2, and is compared with the identification numbers ID of a large number of temperature sensors 1 and the identification numbers ID of passing routers such as the transfer router 2 and the representative router 3. A temperature database 61 that stores measured temperature data in real time, a road section that uses measured temperature data of each of a large number of temperature sensors 1 as a section temperature, and an identification number ID of each of a large number of temperature sensors 1 (including an identification number ID of a passing router) Each temperature sensor connected to the system has an ID that can be uniquely identified (hereinafter the same), and includes a temperature section database 62 that stores reference data and a map database 63 that stores road map information.

  The comfortable walking route search server 6 is a network connection unit 610 such as a gateway that connects to the Internet 5 or other network devices to exchange signals, and a LAN adapter that connects the server 6 and the network connection unit 610. A communication control unit 611, an authentication processing unit 612 for authenticating the mobile terminal 7, and a number of points periodically sent from a number of temperature sensors 1 through the wireless router 2, the representative router 3, the wireless telephone network 4, and the Internet network 5. A temperature data collection unit that collects each temperature measurement data and periodically stores it in the temperature database 61 in comparison with the identification number ID of each temperature sensor 1 and the identification number ID of a passing router such as the transfer router 2 and the representative router 3 613, upon receiving a route search command specifying the current location or the departure location and the destination location from the mobile terminal 7, the map The map information of the database 63 is searched, the route search unit 614 that searches for a plurality of walking route candidates, and the plurality of route candidates extracted by the route search unit 614 are referred to the temperature database 61 and the temperature section database 62. , An optimum route selecting unit 615 that adds a weight to the corresponding section distance according to the level of the measured temperature data in each passing section, and selects a route having a minimum integrated value of the section distance to which the weight is added as an optimum recommended route; Information related to the optimum route selected by the optimum route selection unit 615, for example, road map information of the corresponding area is read from the map database 63, and a route indicating line for clearly indicating the recommended route on the road map of the area is displayed. In addition, recommended route map information is created and sent to the requesting mobile terminal 7 through the communication control unit 62 and the network connection unit 61. And a recommended route output unit 616 for sending.

  Next, a comfortable walking route search method executed by a program incorporated in the comfortable walking route search server 6 having the above configuration will be described. First, the setting of the temperature section registered in the temperature section database 62 will be described with reference to FIGS. In FIG. 3, a thick line with diagonal lines is a walking network in a certain area. In FIG. 3, it is assumed that the wireless temperature sensor 1 is installed at each point indicated by a circle. It is determined at the contact point (x mark) on the road which temperature sensor of the temperature sensors 1 and 1 installed adjacent to each other is used as the temperature data of the corresponding walking path section. Then, as shown in FIG. 4, the contact X is a node, the road section (line segment) is an arc ai, and the ID of the wireless temperature sensor si (the ID of the transfer router and the ID of the representative router are necessary to identify the sensor). If there is any ID including them, the road section arc ai that is responsible for it is registered in the temperature section database 62.

  For example, the temperature data collection unit 613 periodically detects a number of wireless temperature sensors 1 from a plurality of wireless temperature sensors 1 in a period in which an outside air temperature change can occur or a slightly shorter period, such as a 30 second period, a 1 minute period, and a 5 minute period. Temperature measurement data Ti is collected and stored in the temperature database 61 against the sensor identification number ID.

  Since there is a comfortable outside air temperature for pedestrians and discomfort generally increases when the air temperature rises, the weighting function that defines the relationship between temperature and weighting coefficient is defined as shown in FIG. Keep it. That is, the weighting factor wi = f (Ti) is set as a curve in which the weighting factor increases rapidly as the temperature increases.

  If a request for a comfortable walking route search is transmitted from the user through the mobile terminal 7, the optimal walking route is searched by the following procedure and returned to the requesting mobile terminal 7.

  As shown in the sequence diagram of FIG. 6, the comfortable walking route search server 6 always collects measured temperature data from a large number of wireless temperature sensors 1 and identifies each sensor in the road temperature distribution in the holding area. And the ID to be recorded in the temperature database 61 (step SQ1).

  If a comfortable walking route search request is sent from a certain user through the portable terminal 7 (step SQ2), a comfortable walking route search routine is started (step SQ3), and the current location of the portable terminal 7 or the user is determined by mutual communication. A point designated through the portable terminal 7 is searched and registered as a departure point in the map database 63, and a point designated by the user through the portable terminal 7 is searched through the map database 63 and registered as a destination point (step SQ4). SQ5).

  When the departure point and the destination point are determined, the comfortable walking route search server 6 searches for a plurality of route candidates from the departure point to the destination point with reference to the map database 63 (step SQ6). For this route search, a shortest route search program such as a general Dijkstra algorithm is used.

  Subsequently, the map database 63 and the temperature section database 62 are searched, the arc number ai is determined from the road section on the walking route, and the length di is read for each determined arc ai (step SQ7). Further, the measured temperature data Ti of the temperature sensor si corresponding to the arc ai is read from the temperature database 61 (step SQ8).

  Further, for each walking path candidate, the overlapped walking path length W is set to W = Σ (di * f (Ti)) using the distance di for each arc ai and the temperature weighting function f (Ti) shown in FIG. (Step SQ9). Then, the recommended route candidate information is transmitted to the user's mobile terminal 7 and displayed as recommended route information in order from the walking route candidate having the smallest overlapping walking route length W (steps SQ10 to SQ12).

  When the recommended route information is displayed on the mobile terminal 7, the requesting user usually selects the route with the first recommended rank and transmits a selection command to the comfortable walking route search server 6 (step SQ13). When the recommended route candidate selection command is received, the comfortable walking route search server 6 uses the selected recommended route candidate as the optimum walking route, the surrounding map including the corresponding route, and the recommendation in which the optimum walking route is displayed in a prominent manner on the map. The walking route map information is transmitted to the portable terminal 7 and displayed (step SQ14).

  When the optimum walking route map information is displayed on the mobile terminal 7, the user uses this as a comfortable walking route guidance screen and walks to the destination according to the displayed walking route (step SQ15).

  Note that after starting the route guidance, depending on the performance of the mobile terminal, the current location can be detected by a GPS sensor and displayed on the guidance route map in real time. The map information can be scaled up or down. As a route search application executed by the comfortable walking route search server 6, for example, a Dijkstra algorithm for solving the shortest route problem can be used.

  As described above, according to the comfortable walking route search server of the present embodiment, if a comfortable walking route search request is received from the mobile terminal 7, a walking route in which a road section having a relatively low temperature is selected in consideration of the current temperature environment. Can be searched as a recommended route and presented to the user. For example, in a big city, there is an advantage that a route with many trees and shades of buildings can be recommended as a recommended route, and a route as cool as possible can be proposed particularly in midsummer.

  (Second Embodiment) A comfortable walking route search system according to a second embodiment of the present invention will be described. As shown in FIG. 7, a large number of pedestrian density sensors 11 with an appropriate distribution are installed on the road edge where a pedestrian may walk. This pedestrian density sensor 11 is configured by a laser scanner or an ultrasonic scanner that receives reflected light of laser light transmitted from itself and estimates the pedestrian density based on the amount of reflected light. This pedestrian density sensor 11 periodically transmits measurement signal data together with an identification number ID assigned to the sensor itself by radio at a predetermined frequency.

  The wireless signal of the measured temperature data from each of the pedestrian density sensors 11 within the capacity limit is received by the wireless router 2, and the wireless router 12 receives the pedestrian density measurement data from each of the received many pedestrian density sensors 11. The identification number ID of the own router is further added to the sensor ID and transferred to another router 2 or the representative router 3. The representative router 13 adds the identification number ID of its own router to the received pedestrian density measurement data, sensor ID, and identification number ID of the transfer router 2 from each of the many pedestrian density sensors 11 received, and the wireless telephone network 4 Then, it transmits to the comfortable walking route search server 60 of the specific address via the Internet network 5.

  The comfortable walking route search server 60 has the functional configuration shown in FIG. 8 and is mostly shared with the comfortable walking route search server 6 in the first embodiment, and includes identification numbers IDs and transfer routers of a large number of pedestrian density sensors 11. 2. The pedestrian density database 601 that stores the pedestrian density measurement data of each pedestrian density sensor 11 in real time in comparison with the identification number ID of the passing router such as the representative router 3 and the pedestrian density sensors 11 A pedestrian density section database 602 that stores contrast data of road sections having the pedestrian density measurement data as a section pedestrian density and identification numbers ID of the respective pedestrian density sensors 11, and a map database 63 that stores road map information. I have.

  In addition, the comfortable walking route search server 60 is configured such that the network connection unit 610, the communication control unit 611 such as a LAN adapter that connects the server 60 and the network connection unit 610, and the authentication of the mobile terminal 7 are the same as in the first embodiment. Authentication processing unit 612 that performs pedestrian density measurement data sent from a large number of pedestrian density sensors 11 through a wireless router 2, a representative router 3, a wireless telephone network 4, and an Internet network 5. Pedestrian density data collection unit that collects and periodically stores the identification number ID of each pedestrian density sensor 11 and the identification number ID of a passing router such as the transfer router 2 and the representative router 3 in the pedestrian density database 601 603, receiving a route search command specifying the current location or the departure location and the destination location from the mobile terminal 7, The route search unit 614 that searches the figure information and searches for a plurality of walking routes, and for each of the plurality of routes extracted by the route search unit 614, refer to the pedestrian density database 601 and the pedestrian density section database 602, An optimum route selection unit 615 that adds a weight to the corresponding section distance according to the density of the pedestrian density measurement data in each passing section, and selects a route having a minimum integrated value of the section distance to which the weight is added as the optimum recommended route. In addition, information related to the optimum recommended route selected by the optimum route selection unit 615, for example, road map information of the corresponding area is read from the map database 63, and a route instruction that clearly indicates the recommended route on the road map of the area. A recommended route map information is created by adding a line to the requesting mobile terminal 7 through the communication control unit 62 and the network connection unit 61. And a recommended route output unit 616 for sending.

  Next, a comfortable walking route search method executed by a program incorporated in the comfortable walking route search server 60 having the above configuration will be described.

  The setting of the pedestrian density section registered in the pedestrian density section database 602 is substantially the same as the setting of the temperature section of the first embodiment, and the wireless temperature sensor is indicated for each point indicated by a circle in FIG. It may be considered that a pedestrian density sensor 11 is installed instead of 1. Then, as shown in FIG. 4, the contact x is a node, the road section (line segment) is an arc ai, and the ID of the pedestrian density sensor si (the ID of the transfer router 2 to identify the sensor) instead of the wireless temperature sensor. If the ID of the representative router 3 is necessary, the road section arc ai that it is responsible for is registered in the pedestrian density section database 602 for each ID).

  The pedestrian density data collection unit 603 periodically collects pedestrian density measurement data Di from a large number of pedestrian density sensors 11 at a predetermined suitable cycle such as a 30-second cycle, a 1-minute cycle, and a 5-minute cycle. And stored in the pedestrian density database 601 in contrast to the sensor identification number ID. In the case of the present embodiment, the weight function for the pedestrian density is set stepwise because the measurement accuracy of the sensor is not strict.

  For example, a weight w1 is set for Di = 0 to 3 people, a weight w2 for Di = 4 to 9 people, and a weight w3 for Di = 10 people or more. W1 <w2 <w3 so as to increase.

  If a request for a comfortable walking route search is transmitted from the user through the mobile terminal 7, the optimal walking route is searched by the following procedure and returned to the requesting mobile terminal 7.

  As shown in the sequence of FIG. 9, the comfortable walking route search server 60 always collects pedestrian density measurement data periodically from a large number of pedestrian density sensors 11 for the pedestrian density distribution in the holding area. The ID for identifying the sensor is recorded in the pedestrian density database 601 (step SQ1A).

  If a comfortable walking route search request is sent from a certain user through the portable terminal 7, the departure point and the destination point are registered in the same manner as in the first embodiment (steps SQ2A to SQ5A). When the departure point and the destination point are determined, the comfortable walking route search server 6 searches for a route candidate from the departure point to the destination point with reference to the map database 63 (step SQ6A). This route search method is the same as that in the first embodiment.

  Subsequently, the map database 63 and the pedestrian density section database 602 are searched, the arc number ai is determined from the road section on the walking route, and the length di is read for each determined arc ai (step SQ7A). Further, the pedestrian density measurement data Di of the pedestrian density sensor si corresponding to the corresponding arc ai is read from the pedestrian density database 601 (step SQ8A).

  Further, for each walking path candidate, the distance di for each arc ai is multiplied by the weight w1, w2 or w3 (w1 <w2 <w3) for each pedestrian density measurement data Di described above, and the overlapping walking path length W is calculated. Calculation is performed using W = Σdi * w (step SQ9A). Then, the recommended route candidate information is transmitted to the user's mobile terminal 7 in order from the walking route candidate having the smallest overlapping walking route length W, and is displayed as the recommended route information (steps SQ10A to SQ12A).

  The subsequent steps are the same as in the first embodiment. When the recommended route information is displayed on the mobile terminal 7, the user who has requested the request usually selects the route with the first recommended rank, and the comfortable walking route search server 60. A selection command is transmitted to (step SQ13A). When the recommended route candidate selection command is received, the comfortable walking route search server 60 uses the selected recommended route candidate as the optimum walking route, the surrounding map including the corresponding route, and the recommendation in which the optimum walking route is displayed in a prominent manner on the map. The walking route map information is transmitted to the portable terminal 7 and displayed (step SQ14A).

  When the optimum walking route map information is displayed on the mobile terminal 7, the user uses this as a comfortable walking route guidance screen and walks to the destination according to the displayed walking route (step SQ15A).

  Even in this embodiment, after starting the route guidance, depending on the performance of the mobile terminal, the current location is detected by the GPS sensor, and this is displayed on the guidance route map in real time. Can do. The map information can be scaled up or down. Further, as a route search application executed by the comfortable walking route search server 60, for example, a Dijkstra algorithm for solving the shortest route problem can be used. Furthermore, the setting of the weighting factor is not limited to the embodiment, and can be set in a finer stepwise manner, and continuously changes with a function using pedestrian density data as a parameter. You can also.

  As described above, according to the comfortable walking route search server of the present embodiment, if a comfortable walking route search request is received from the mobile terminal 7, the current pedestrian density of each road section is considered and the pedestrian density is relatively low. A walking route that selects a low road section can be searched as a recommended route and presented to the user.

The block diagram of the comfortable walking route search system of the 1st Embodiment of this invention. The block diagram which showed in detail the functional structure of the comfortable route search server in the comfortable walking route search system of the said embodiment. The map which shows the relationship between the installation location of the temperature sensor which collects data in the comfortable walking route search system of the said embodiment, and the setting of the contact of a road area. Explanatory drawing which shows the relationship between many temperature sensors and the temperature area (arc) using the measured temperature data in the comfortable walking route search system of the said embodiment. The graph which shows the relationship between measured temperature data and the weight weighted with respect to distance at the time of route search in the comfortable walking route search system of the said embodiment. The sequence diagram which shows the search procedure of the comfortable walking route by the comfortable walking route search system of the said embodiment. The block diagram of the comfortable walking route search system of the 2nd Embodiment of this invention. The block diagram which showed in detail the functional structure of the comfortable route search server in the comfortable walking route search system of the said embodiment. The sequence diagram which shows the search procedure of the comfortable walking route by the comfortable walking route search system of the said embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Wireless temperature sensor 2 Router 3 Representative router 4 Wireless telephone network 5 Internet network 6 Comfortable walking route search server 11 Pedestrian density sensor 60 Comfortable walking route search server 61 Temperature database 62 Temperature section database 63 Map database 601 Pedestrian density database 602 Walking Pedestrian density section database 603 Pedestrian density data collection unit 610 Network connection unit 611 Communication control unit 612 Authentication processing unit 613 Temperature data collection unit 614 Route search unit 615 Optimal route selection unit 616 Recommended route output unit

Claims (4)

A number of temperature sensors installed at appropriate locations on the roadside, measuring the ambient temperature, and periodically transmitting the measured temperature data with its own identification number;
A temperature database that collects real-time measured temperature data from the multiple temperature sensors via a network and periodically stores them in comparison with the identification numbers of the temperature sensors;
A temperature section database that stores reference data of road sections having section temperature as measured temperature data of each of the plurality of temperature sensors, and identification numbers of the plurality of temperature sensors;
A map database for storing road map information;
In response to a route search command that specifies a departure point and a destination point from the terminal, a route search unit that searches the map database and extracts a plurality of routes from the departure point to the destination point;
For each of a plurality of routes extracted by the route search means, the temperature interval database and the temperature database are referred to, and a weight is added to the corresponding interval distance according to the level of the latest real-time measured temperature data in each passage interval. And an optimum route selection unit for finding a route having the smallest section distance to which the weight is added,
A comfortable walking route search server comprising: a recommended route output unit that transmits a route found by the optimum route selection unit to a terminal as a recommended route. A road that is installed in advance at an appropriate location on the roadside, measures the ambient temperature, and periodically transmits the measured temperature data with its own identification number. Registering reference data of sections and identification numbers of each of the plurality of temperature sensors in a temperature section database;
Registering road map information in the road map database in advance;
A temperature data collection step of collecting real-time measured temperature data sent from the multiple temperature sensors via a network and periodically storing them in a temperature database in contrast to the identification number of the temperature sensor;
In response to a route search command specifying a departure point and a destination point from the terminal, a route search step for searching the map database and extracting a plurality of routes from the departure point to the destination point;
For each of the plurality of routes extracted in the route search step, the temperature interval database and the temperature database are referred to, and the corresponding interval distance is weighted according to the level of the latest real-time measured temperature data in each passage interval. And an optimum route selection step for finding a route with the smallest section distance to which the weight is added,
A comfortable walking route search program that causes a computer to execute a recommended route output step of transmitting a route found in the optimum route selection step as a recommended route to a terminal. A large number of pedestrian density sensors that are installed at appropriate locations on the roadside, measure the pedestrian density on the road, and periodically transmit density measurement data with their identification numbers,
A pedestrian density database that collects real-time density measurement data from the plurality of pedestrian density sensors via a network and periodically stores them in comparison with the identification numbers of the pedestrian density sensors;
A road section in which real-time density measurement data of each of the plurality of pedestrian density sensors is a section pedestrian density, and a section pedestrian density database that stores reference data of identification numbers of the plurality of pedestrian density sensors,
A map database for storing road map information;
In response to a route search command that specifies a departure point and a destination point from the terminal, a route search unit that searches the map database and extracts a plurality of routes from the departure point to the destination point;
For each of the plurality of routes extracted by the route search means, refer to the section pedestrian density database and pedestrian density database, and the corresponding section distance according to the density of the latest real-time density measurement data in each passing section An optimum route selection unit that finds a route with the smallest section distance to which the weight is added,
A comfortable walking route search server comprising: a recommended route output unit that transmits a route found by the optimum route selection unit to a terminal as a recommended route. The real-time density measurement data of each of a large number of pedestrian density sensors that are installed in advance on the roadside, measure the pedestrian density, and periodically transmit the density measurement data with their identification numbers Registering in the section pedestrian density database the reference data of the road section as the section pedestrian density and the identification number of each of the multiple pedestrian density sensors;
Registering road map information in the road map database in advance;
Pedestrian density that collects real-time density measurement data sent from the multiple pedestrian density sensors via a network and periodically stores them in the pedestrian density database in comparison with the identification number of the pedestrian density sensor A data collection step;
In response to a route search command specifying a departure point and a destination point from the terminal, a route search step for searching the map database and extracting a plurality of routes from the departure point to the destination point;
For each of a plurality of routes extracted in the route search step, with reference to the section pedestrian density database and pedestrian density database, the corresponding section according to the density of the latest real-time density measurement data in each passing section An optimum route selection step of adding a weight to the distance and finding a route having the smallest section distance to which the weight is added;
A comfortable walking route search program that causes a computer to execute a recommended route output step of transmitting a route found in the optimum route selection step as a recommended route to a terminal.

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