JP2006127120A - System and device for managing road - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a road management system for efficiently managing roads, and to provide a road management device. <P>SOLUTION: A travelling locus 312 is the one to be displayed when the number of passage days from the last day of the travelling of a vehicle 100 on the road is not more than three days. A travelling locus 313 is the one to be displayed when the number of the passage days from the last day of the travelling of the vehicle 100 is not less than four days and not more than seven days. A travelling locus 314 is the one to be displayed when the number of the passage days from the last day of the travelling of the vehicle 100 is not less than eight days. Display parts 301, 201a and a display monitor 151 display the latest one of the travelling loci of the vehicle 100 on the road identifiably in response to the number of the passage days from the travelling date. Consequently, the road where the number of the passage days after the travelling of the vehicle 100 is large and cleaning is highly required is easily determined. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a road management technique using a vehicle.

  A management system for managing a road cleaning vehicle using a satellite communication network is known. In this management system, the collected dust is managed appropriately by monitoring work routes such as a road sweeper and a dump truck based on the position information of the vehicle by GPS (see Patent Document 1).

JP 2001-34879 A

  However, in the conventional management system, a specific method for determining the next road to be cleaned using the cleaning history is unknown.

(1) A road management system according to a first aspect of the invention is a road management system that generates road management information by exchanging information between a vehicle that manages the road and the center, and that detects the current position of the vehicle. Vehicle position detection means, travel history storage means for storing the current position of the vehicle detected by the own vehicle position detection means in association with date and time information as travel history information of the vehicle, and travel stored in the travel history storage means Display means for displaying a travel locus of the vehicle based on history information, and the travel locus displayed on the display means is classified and displayed in a display form based on date information.
(2) The invention according to claim 2 is the road management system according to claim 1, wherein the traveling locus displayed on the display means is a plurality according to the elapsed time from the date and time included in the date and time information to the current date and time. Are displayed simultaneously on the same screen.
(3) The invention according to claim 3 is the road management system according to claim 1 or claim 2, wherein when there are a plurality of running tracks on the same road, the running track displayed on the display means is a plurality of running tracks. Of the travel trajectories, the date and time information is a travel trajectory based on the latest travel history information.
(4) In the road management system according to any one of claims 1 to 3, the invention according to claim 4 includes which lane of the road having a plurality of lanes on one side in the travel history information. Is included.
(5) The invention of claim 5 is a travel history storage means for storing the current position of the vehicle managing the road as the travel history information of the vehicle in association with the date and time information, and the travel history stored in the travel history storage means. Display means for displaying a travel locus of the vehicle based on the information, and the travel locus displayed on the display means is classified and displayed in a display form based on the date and time information.

  According to the present invention, the traveling trajectory of the vehicle managing the road is classified and displayed in the display form based on the date and time information. Therefore, it is easy to determine whether the travel locus is new or old, and it is easy to grasp the road on which the vehicle should travel for road management. Thereby, the range which a vehicle should drive can be determined easily and a road can be managed efficiently.

---- Overall configuration ---
With reference to FIGS. 1-5, one Embodiment of the road management system by this invention is described. FIG. 1 shows a plurality of vehicles 100 used in this road management system, each work base 200, a system network center 300, and a satellite communication network for transmitting and receiving various data between the vehicle 100 and the system network center 300. 400 and a communication network 500 for transmitting and receiving various data between each work base 200 and the system network center 300 are shown.

  For the purpose of road management, the vehicle 100 is mainly used for the purpose of grasping road conditions such as traffic volume, and early detection of abnormal situations such as traffic accidents, road damage due to passing vehicles, falling objects, abnormal weather, and faulty vehicles. It is a vehicle that patrols the highway. As shown in FIG. 2, the vehicle 100 includes various types of devices, such as an in-vehicle device 150, a vehicle position detection device 160 for measuring the vehicle position, and a system network center 300 via a satellite communication network 400. A communication device 170 for transmitting and receiving data is provided. The in-vehicle device 150 is a device that processes various data from the work base 200 and the system network center 300 and information input by the driver and passengers of the vehicle 150, a display monitor 151 that displays necessary information, a voice Is provided with a speaker 152 and an input device 153 for a driver or a passenger to input information.

  The own vehicle position detection device 160 includes a GPS antenna 161 that receives radio waves from the GPS satellite 10 and an arithmetic device 162 that calculates the own vehicle position using the radio waves received by the GPS antenna 161. The communication device 170 is a device that transmits / receives various data to / from the system network center 300 via the satellite communication network 400 that uses the communication satellite 20. The communication network 170 via the communication satellite 20 and the communication antenna 171. And a communication unit 172 that transmits and receives various data to and from 300. The vehicle 100 is assigned a Car ID (vehicle identification number) that identifies each vehicle, and is used to identify each vehicle when various types of data are transmitted to and received from the system network center 300.

  In the vehicle 100 configured as described above, the information input from the input device 153 and the vehicle position (position information) detected by the vehicle position detection device 160 are transmitted from the communication device 170 via the satellite communication network 400 together with the Car ID. To the system network center 300. As will be described later, the information input from the input device 153 includes information indicating which lane of the road having a plurality of lanes on one side (travel lane information). In addition, the vehicle 100 receives various data transmitted from the system network center 300 via the satellite communication network 400 by the communication device 170 and appropriately uses it for processing of the in-vehicle device 150, or displays it on the display monitor 151. Notification from the speaker 152. As will be described later, the position information of the vehicle 100 transmitted from the vehicle 100 to the system network center 300 is also transmitted to each work site 200 via the communication network 500.

  The vehicle 100 is a vehicle having a road surface cleaning function as part of road management. The vehicle 100 is a self-propelled vehicle main body 110, a traveling wind intake duct 120 provided in front of the lower portion of the vehicle main body 110, and disposed behind the traveling wind intake duct 120 and below the vehicle main body 110. The dust guide duct 130 and the dust collector 140 are provided, and as will be described later, the wind on the road is blown against the road surface below the vehicle 100 to wind up and collect the dust on the road surface.

  As shown in FIGS. 2 and 3, the traveling wind intake duct 120 is a duct that extends in the front-rear direction between the left and right front wheels of the vehicle 100, and has a traveling wind intake 121 that opens forward, A blowing nozzle 123 that blows the traveling wind taken in at the wind inlet 121 onto the road surface at the bottom of the vehicle 100 is provided. The blowing nozzle 123 blows the traveling wind onto the road surface and raises the dust, so that the opening for blowing the traveling wind is provided close to the road surface, and the width in the left-right direction is substantially equal to the entire width of the vehicle 100. The dust guide duct 130 is a duct for guiding the traveling wind blown to the road surface by the blowing nozzle 123 of the traveling wind intake duct 120 and the dust raised by the traveling wind to the dust collector 140. The traveling wind and dust (hereinafter referred to as dust-containing air) taken in by the dust guide duct 130 are sent out to the dust collector 140.

  The dust collector 140 is a device that separates dust from dust-containing air and discharges clean air, such as a gravity dust collector, inertial dust collector, centrifugal dust collector, and filtration dust collector. It has a collecting part 142 and a clean air outlet 143. The dust-containing air inlet 141 is a dust-containing air inlet provided in front of the dust collector 140 and is connected to the dust guide duct 130. The dust-containing air taken in from the dust-containing air inlet 141 is collected by the collection unit 142 by, for example, gravity, inertial force, centrifugal force, diffusion force, or the like. The collected and separated dust is stored in a hopper (not shown) of the collecting unit 142, and the clean air from which the dust has been separated is discharged rearward from a clean air discharge port 143 provided at the rear of the dust collector 140. .

  When the vehicle 100 travels, traveling wind is taken in at the traveling wind inlet 121 of the traveling wind intake duct 120 and blown from the blowing nozzle 123 onto the road surface below the vehicle 100. When the traveling wind is blown to the road surface from the nozzle 123, the dust accumulated on the road surface is raised. The dust is sent to the dust collector 140 from the dust guide duct 130 as dust-containing air together with the traveling wind blown on the road surface.

  The dust-containing air sent to the dust collector 140 is collected and separated by the collecting unit 142 to become clean air and is discharged from the clean air discharge port 143. That is, when the vehicle 100 travels, the dust accumulated on the road surface can be collected and the road surface can be cleaned. In this vehicle 100, as the traveling speed of the vehicle 100 increases, the wind speed of the traveling wind blown from the blowing nozzle 123 onto the road surface increases, so that the force that soars the dust accumulated on the road surface becomes stronger. Thus, the road surface can be cleaned over the entire width of the vehicle 100 by traveling with the vehicle 100 for the patrol of the highway.

  As shown in FIG. 1, the work base 200 is a base that manages each vehicle 100 for each region, and is provided in each region. Each work base 200 is provided with a terminal device 201 that stores information for managing the vehicle 100 belonging to each work base 200. The terminal device 201 includes a display unit 201a that can display various data. Information handled by the terminal device 201 will be described later. The terminal device 201 transmits and receives various data to and from the terminal device of the system network center 300 connected via the communication network 500. Various data transmitted from the terminal device of the system network center 300 and stored in the terminal device 201 of the work site 200 are input to the in-vehicle device 150 of each vehicle 100 using, for example, a storage medium (not shown). You can also. In addition, various data stored in the in-vehicle device 150 can be input to the terminal device 201 using this recording medium.

  The system network center 300 is a facility that centrally manages information of each vehicle 100 and is provided with a terminal device 301. The terminal device 301 includes a display unit 301a capable of displaying various data, and stores information on road maps throughout the country as electronic data in a storage unit (not shown). This electronic data includes information on road distance, shape, intersection, number of lanes, connection state with other roads, and the like. Specifically, the road map is converted into data as a collection of nodes indicating intersections, inflection points, and the like and straight lines connecting the nodes, that is, links, and the position coordinates of each node and each link. And attribute information. This attribute information includes types of roads such as highways, national roads, and general roads, the number of lanes, connection information for each intersection and road, information on major facilities such as stations, hotels, and government offices around the road. . The terminal device 301 mainly manages the travel history of each vehicle 100 based on various data transmitted from each vehicle 100, as will be described later. Various data handled by the terminal device 301 is appropriately transmitted to each vehicle 100 and each work site 200 via the satellite communication network 400 or the communication network 500.

---- Management of driving history and display of driving trajectory ---
The travel history of each vehicle 100 is managed as follows. As described above, the position information of each vehicle 100 is transmitted from the communication device 170 to the system network center 300 via the satellite communication network 400 together with the traveling lane information and the Car ID. Information from each vehicle 100 received by the system network center 300 is associated with each link of the road map together with the reception date / time of the position information, the traveling lane information, and the Car ID, and stored in the storage unit of the terminal device 301 as the traveling history of the vehicle 100. Stored. Information from each vehicle 100 received by the system network center 300 is transmitted via the communication network 500 to the terminal device 201 of each work site 200 to which each vehicle 100 belongs based on the Car ID.

  The terminal device 301 displays the road map on the display unit 301a based on the information on the road map of the whole country stored in the storage unit, and each vehicle based on the travel history of the vehicle 100 stored in the storage unit. 100 travel tracks can be displayed superimposed on the road map. The travel locus of each vehicle 100 displayed on the display unit 301a is classified and displayed in a display form based on the reception date and time of the position information, as described below.

  FIG. 4 is an example showing a road map displayed on the display unit 301a of the terminal device 301 and a travel locus of the vehicle 100 displayed superimposed on the road map. In the road map shown in FIG. 4, both an up line 321 and a down line 322 are displayed. 310 is a current position mark indicating the current position of the vehicle 100, and 311 is today's travel locus of each vehicle 100. In the current position mark 310, an identification display 310b for identifying each vehicle 100 is added to a mark 310a indicating each vehicle 100. The Car ID may be displayed as the identification display 310b.

  The travel trajectories 312 to 314 have the date and time when the latest travel trajectory is received before the previous day among the travel trajectories of the plurality of vehicles 100 associated with the road links displayed on the display unit 301a. More specifically, the travel locus 312 is the one in which the reception date and time of the newest travel locus is within the past three days among the travel loci of the plurality of vehicles 100 associated with the road link displayed on the display unit 301a. It is a running locus which shows a case. That is, the traveling locus 312 is a traveling locus that is displayed when the number of days elapsed since the last time the vehicle 100 traveled is within three days.

  Similarly, the travel locus 313 is a travel locus that is displayed when the number of days elapsed since the last travel of the vehicle 100 is 4 days or more and within 7 days, and the travel locus 314 is the last travel of the vehicle 100. It is a driving | running | working locus | trajectory displayed when the number of days elapsed from the date when it was 8 days or more. That is, the travel locus of the vehicle 100 is displayed in a plurality of display forms according to the elapsed time (elapsed days) from the reception date / time of the position information to the current date / time. Moreover, when displaying a driving | running locus | trajectory with a some display form according to elapsed days, it classify | categorizes with the reference | standard elapsed time. As described above, the display unit 301a displays the newest one of the travel trajectories of each vehicle 100 traveling on each road in an identifiable manner according to the number of days elapsed from the travel date.

  Since the information regarding the road map and the travel locus shown in FIG. 4 is appropriately transmitted to each vehicle 100 and each work base 200 via the satellite communication network 400 or the communication network 500, the display monitor 151 of each vehicle 100, and each The information can also be displayed on the display unit 201 a of the terminal device 201 provided at the work base 200. In the following description, the content displayed on the display unit 301a of the terminal device 301 will be described, but the same applies to the display unit 201a and the display monitor 151. In addition, when displaying the current position mark 310 on the display monitor 151 of each vehicle 100, the current position mark 310 of the own vehicle may be displayed with emphasis so that the own vehicle can be distinguished from other vehicles. .

  In FIG. 4, for the sake of convenience of explanation, the traveling trajectories 311 to 314 are described with different line types. However, when displaying on the actual display unit 301a, the same line type (solid line) is used to display colors. Is displayed. Today's travel locus 311 is green, travel locus 312 with elapsed days within 3 days is blue, travel locus 313 with elapsed days within 4 to 7 days is yellow, and travel locus 314 with elapsed days of 8 days or more. Is displayed in red. Further, as shown in FIG. 4, different line types may be displayed, or the same line type may be displayed with different line thickness, shading, shading, or the like. Moreover, you may display along the road displayed on the display part 301a so that the line color-coded according to the elapsed days from driving | running | working date and time may not overlap with the displayed road. Further, the color-coded lines may be displayed in a blinking manner, and the blinking speed and blinking pattern may be changed according to the number of days elapsed from the travel date.

  The amount of dust on the road surface increases according to the number of days that have elapsed since the vehicle 100 traveled. Therefore, the longer the number of days that have elapsed since the vehicle 100 traveled, the higher the need to travel with the vehicle 100 for cleaning. As described above, the system network center 300 displays the newest travel locus of each vehicle 100 on the display unit 301a of the terminal device 301 so as to be identifiable according to the number of days elapsed from the travel date. It is possible to easily discriminate roads that have a long elapsed time after traveling and have a high need for cleaning.

  On a road with a plurality of lanes on one side, only one lane can be cleaned per vehicle 100 run. Therefore, the number of days elapsed after the vehicle 100 has traveled may vary depending on the lane. However, when a wide area is displayed on the display unit 301a as shown in FIG. 4, if the identification display according to the number of days elapsed is made for all of the plurality of lanes, the identification becomes difficult. Therefore, when displaying a wide area on the display unit 301a, the reception date and time are compared for each of the newest travel tracks of each lane, and the travel track with the oldest reception date and time is displayed. For example, on a road with two lanes, a driving lane and an overtaking lane, the reception date / time of the newest driving trajectory in the driving lane is compared with the receiving date / time of the newest driving trajectory in the overtaking lane, and the lane with the older reception date / time is compared. Is displayed as the traveling locus of the vehicle 100 on the road. By displaying in this way, even when a wide area including a road having a plurality of lanes is displayed, a road with a high need for cleaning can be displayed with priority.

  FIG. 5 is a diagram showing the display content of the display unit 301a when the predetermined range of the road map is enlarged and displayed for the vehicle 100 traveling on the road of three lanes on one side. The same applies to the display unit 201a and the display monitor 151. FIG. 5 is a diagram illustrating an example of an up line 321 of three lanes on one side composed of two lanes of traveling lanes 321a and 321b and one lane of an overtaking lane 321c. The identification display method by changing the display color of the travel locus in accordance with the elapsed days in FIG. 5 is the same as that in FIG. 4 for displaying a wider area. In the central traveling lane 321b, a traveling locus 314 older than the traveling locus 313 is displayed in a superimposed manner from a point 315 in the middle.

  FIG. 5 shows a state where the vehicle 100 is traveling on the left traveling lane 321a as indicated by the current position mark 310. From this figure, the lane in which the vehicle 100 travels in the vicinity of the point 315 is changed in order to travel and clean the traveling lane 321b on which the traveling locus 314 is superimposed and displayed, which has a higher need for cleaning than other lanes. I know you need to do that. The display on the display unit 301a of the terminal device 300 shown in FIG. 5 is also displayed on the display monitor 151 of the vehicle 100 as described above. Therefore, the driver can recognize that the lane traveling in the vicinity of the point 315 should be changed.

--- About operation of vehicle 100 ---
In order to clean the road systematically, it is desirable to determine the travel route of the vehicle 100 in advance. Therefore, prior to the traveling of the vehicle 100, at each work base 200 to which the vehicle 100 belongs, the travel locus information transmitted from the terminal device 301 of the system network center 300 and stored in the terminal device 201 of the work base 200 is The data is input to the in-vehicle device 150 of each vehicle 100 using the storage medium. By doing so, the travel history is identified and displayed on the display monitor 151 of the vehicle 100 according to the elapsed days as described above, so that the driver can easily grasp the route to be traveled today. Further, the route that the vehicle 100 should travel is determined in advance by using a known route search technique used in the car navigation device or the like in the terminal device 201, and the vehicle 100 should travel along with the travel locus information. The route may be input to the in-vehicle device 150 to guide the route when the vehicle 100 travels. Thereby, the overlap driving | running | working of the same road by the several different vehicle 100 can be reduced.

  Based on the road map displayed on the display monitor 151 and the travel history, the driver can select the travel route as appropriate and cause the vehicle 100 to travel. As described above, the vehicle 100 that has departed from the work base 200, as described above, transmits the vehicle position (position information) detected by the vehicle position detection device 160 together with the Car ID from the communication device 170 via the satellite communication network 400. Transmit to the system network center 300. In addition, the vehicle 100 receives various data transmitted from the system network center 300 via the satellite communication network 400 by the communication device 170, and displays the data of the traveling trajectories of the own vehicle and other vehicles that change every moment on the display monitor 151. To display. When the driver or the passenger operates the input device 153 as appropriate, the information displayed on the display monitor 151 is the wide area display shown in FIG. 4 or the enlarged display shown in FIG.

  When the vehicle 100 travels on a road having a plurality of lanes on one side, it is difficult to determine the traveling lane with the accuracy of the current GPS system. For this reason, it is necessary to input information indicating the lane in which the driver or passenger is actually traveling from the input device 153. For example, if the display monitor 151 is provided with a touch panel function and the function as the input device 153 is given, a driver or a passenger touches the lane displayed on the display monitor 151 to select and input the lane to travel. it can. As described above, the information related to the lane to be traveled input from the input device 153 is transmitted from the communication device 170 to the system network center 300 via the satellite communication network 400 as travel lane information.

  By comprising in this way, it can display on the display monitor 151 of the vehicle-mounted apparatus 150 that the location which should be cleaned with the own vehicle changed. That is, when another vehicle 100 whose planned route has been changed due to a change in road conditions or the like travels ahead of the vehicle on the road to be cleaned by the own vehicle, the past travel locus displayed on the display monitor 151 is changed to another It is updated with the travel locus of the vehicle 100. The driver recognizes that the location to be cleaned by his / her vehicle has changed by looking at the travel locus of the other vehicle 100 displayed on the display monitor 151, and changes the course to another road to be cleaned. Can do.

The road management system described above has the following effects.
(1) The traveling trajectory of the vehicle 100 that manages the road is configured to be displayed in an identifiable manner according to the number of days elapsed after traveling. As a result, it is easy to determine the length of elapsed days after traveling, and it is easy to grasp the road on which the vehicle 100 should travel for road management. As a result, the range in which the vehicle 100 should travel can be easily determined, and the road can be managed efficiently.

(2) The newest travel locus is displayed among the travel tracks of the plurality of vehicles 100 associated with the road links. That is, the travel history of the plurality of vehicles 100 is centrally managed by the system network center 300, and the travel locus is displayed based on the travel history. Therefore, even when a plurality of vehicles 100 travel on the same road, it is possible to easily grasp how many days have passed since the vehicle 100 last traveled on the road. Thereby, the management of the road by the some vehicle 100 can be implemented efficiently.

(3) A traveling wind intake duct 120, a dust guide duct 130, and a dust collector 140 are provided, and the traveling wind during traveling is blown onto the road surface below the vehicle 100 so that the dust on the road surface is rolled up and collected. The vehicle 100 is configured as follows. Thereby, since the road surface can be cleaned only by traveling on the road with the vehicle 100, patrol and road surface cleaning can be performed at the same time, which is highly convenient.

(4) The traveling locus of the vehicle 100 displayed on the display units 201a and 301a and the display monitor 151 is configured to be displayed in an identifiable manner by changing the display color according to the elapsed days after traveling. As a result, it is possible to instantaneously determine the length of the elapsed days after traveling just by looking at the display units 201a and 301a and the display monitor 151, so that the road on which the vehicle 100 should travel can be immediately grasped. In particular, in the case of the display monitor 151 mounted on the vehicle 100, since the driver can immediately grasp the road to be traveled, safety is high.

(5) The display monitor 151 mounted on the vehicle 100 is configured to display information related to the travel locus. As a result, the driver can grasp the road to be driven only by looking at the display monitor 151, so that it is possible to prevent a reduction in the efficiency of patrol and road surface cleaning due to a mistake in the road to be driven.

(6) When displaying a road map and a travel locus, even when the road to be displayed has a plurality of lanes on one side, when displaying a wide area, the reception date and time for each of the newest travel tracks in each lane Are compared, and the travel locus with the oldest reception date and time is displayed. As a result, even when a wide area is displayed, it is possible to preferentially display a road that needs to be cleaned, so that it is easy to grasp the road to be driven regardless of the display scale. Further, by displaying the wide area, it is easy to make a travel plan for the vehicle 100.

(7) When displaying the road map and the travel locus, if the road to be displayed has a plurality of lanes on one side, when displaying a predetermined range in an enlarged manner, all the lanes are displayed, and for each lane, Each traveling locus is superimposed and displayed. As a result, it is possible to easily grasp a different travel locus for each lane. In particular, since the driver can easily grasp the position where the lane should be changed and the lane to which the vehicle should travel, efficient patrol and road surface cleaning can be performed.

(8) The traveling trajectories of the plurality of vehicles 100 are configured to be displayed on the display units 201a and 301a and the display monitor 151. Therefore, the driver recognizes that the location where the vehicle should travel has changed by looking at the travel trajectory of the other vehicle 100 displayed on the display monitor 151, and changes the course to another road to travel. can do. Thereby, since it can prevent traveling on the same road, the efficiency reduction of patrol and road surface cleaning can be prevented.

(9) Information related to the travel locus is displayed on the display unit 201a of the terminal device 201 disposed in each work base 200. Thereby, since the route which the vehicle 100 should drive | work can be determined previously using the terminal device 201, efficient patrol and road surface cleaning as a whole can be implement | achieved by determining each driving | running locus | trajectory of the some vehicle 100 suitably.

(10) Information indicating the lane in which the vehicle is actually traveling is input from the input device 153. As a result, even when the vehicle 100 travels on a road having a plurality of lanes on one side, an accurate travel track of the vehicle can be transmitted to the system network center 300, so that appropriate road management can be realized.

---- Modified example ---
(1) In the above description, the vehicle 100 is mainly described as a vehicle that circulates on a highway. However, the present invention is not limited to this, and can be applied to a vehicle that circulates on a general road.
(2) In the above description, a road management system using a plurality of vehicles 100 has been described. However, one vehicle 100 may be used in the road management system according to the present invention.
(3) In the above description, the road management system has been described as an example in which the road management system is applied to patrol and road surface cleaning. However, the present invention is not limited to this example. The present invention may be applied to work.

(4) In the above description, the travel trajectory is displayed in different colors with the elapsed days from the travel date and time being 3 days and 7 days, but the present invention is not limited to the above-described elapsed days. That is, in the above description, when displaying the travel locus in a plurality of display forms according to the elapsed time from the travel date and time, the elapsed time is classified by the elapsed time as a reference. May be changed at any time. For example, the travel locus may be displayed in different colors when the elapsed days from the travel date and time are 5th and 10th days, and the travel locus when the elapsed days from the travel date and time are 7th and 14th days. May be displayed in different colors. That is, the predetermined number of days may be an arbitrary number of days as long as the traveling locus is displayed in an identifiable manner depending on whether the number of days elapsed from the traveling date and time has passed a predetermined number of days. Moreover, you may comprise so that the said predetermined days can be set independently with the terminal devices 201 and 301 and the vehicle equipment 150, respectively.

(5) In the above description, the display is classified and classified into three types: a travel trajectory in which the number of days elapsed from the travel date and time is within 3 days, a travel trajectory within 4 to 7 days, and a travel trajectory over 8 days. However, the present invention is not limited to this, and the traveling locus may be classified into two types or four or more types according to the number of days elapsed from the traveling date and time, and may be identified and displayed. Moreover, you may comprise so that the said classification | category number can be set independently with the terminal devices 201 and 301 and the vehicle equipment 150, respectively.

(6) In the above description, the display is classified and displayed according to the number of days elapsed from the travel date and time. However, the present invention is not limited to this, and is classified according to the travel frequency in the past predetermined period. You may comprise so that an identification display may be carried out. For example, if the number of times the vehicle 100 has traveled on the same road during the past 15 days is less than 3 times, it is displayed in blue, and if the number of times the vehicle 100 has traveled on the same road during the past 15 days is 4 times or more, yellow You may make it display with.

(7) In the above description, even if the display scale is changed, the display is classified and displayed in the same manner according to the number of days elapsed from the travel date, but the present invention is not limited to this. For example, when the scale is 1/1000, the travel locus is displayed in blue when the elapsed days are within 3 days, and when the scale is 1 / 50,000, the travel locus is displayed in blue. The predetermined number of days is displayed when the traveling locus is displayed in an identifiable manner depending on whether the number of days elapsed from the traveling date / time has passed the predetermined number of days, such as that the number of elapsed days is within seven days. It may be changed according to the scale.

(8) In the above description, the vehicle position detection device 160 is configured to calculate the vehicle position using the radio wave from the GPS satellite 10, but the present invention is not limited to this, and the vehicle speed sensor, A gyro sensor may be used in combination to improve the detection accuracy of the vehicle position, or a known map matching method in the car navigation device may be adopted.

(9) In the above description, information indicating the lane in which the vehicle is actually traveling is input from the input device 153, but the present invention is not limited to this. For example, an imaging device is disposed in front of the vehicle 100, a white line or a guard rail that divides a road lane is imaged by the imaging device, and an image analysis is performed by the in-vehicle device 150, so that the lane in which the vehicle 100 is traveling is determined. It can also be made to recognize automatically.

(10) In the above description, the travel history of each vehicle 100 is configured to be stored in the storage unit of the terminal device 301 of the system network center 300, but the present invention is not limited to this. For example, the traveling history of the own vehicle may be stored in a storage unit (not shown) of the in-vehicle device 150 of each vehicle 100 and then transmitted to the terminal device 301.

(11) In the above description, the satellite communication network 400 is used to transmit and receive various data between the vehicle 100 and the system network center 300, but the present invention is not limited to this. For example, various data may be transmitted and received between the vehicle 100 and the system network center 300 via a mobile phone communication network or a PHS communication network, and various other communication networks such as the Internet may be used. Various data may be directly transmitted and received between the vehicle 100 and the system network center 300 by wireless communication. Various data may be directly transmitted and received between the vehicle 100 and each work base 200. In this case, it is desirable to share information among the work bases 200 by transferring various data obtained at the work bases 200 to the system network center 300.
(12) You may combine each embodiment and modification which were mentioned above, respectively.

  In the above embodiment and its modifications, for example, the own vehicle position detecting means corresponds to the own vehicle position detecting device 160. The travel history storage unit corresponds to a storage unit (not shown) of the terminal device 301, or a storage unit (not shown) of the terminal device 301 and a storage unit (not shown) of the in-vehicle device 150. The display means corresponds to one of the display units 201a and 301a and the display monitor 151. Furthermore, as long as the characteristic functions of the present invention are not impaired, the present invention is not limited to the device configuration in the above-described embodiment.

It is a figure showing the whole road management system composition by the present invention. 1 is a side view of a vehicle 100 used in a road management system according to the present invention. FIG. 3 is a bottom view of the vehicle in FIG. 2. It is an example which shows the road map displayed on the display parts 301a and 201a and the display monitor 151, and the driving | running | working locus | trajectory of the vehicle 100 superimposed and displayed on the road map. It is a figure which shows the display content of display part 301a, 201a and the display monitor 151 when the predetermined range of a road map is expanded and displayed.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 GPS satellite 20 Communication satellite 100 Vehicle 120 Running wind intake duct 130 Dust guide duct 140 Dust collector 150 In-vehicle device 151 Display monitor 153 Input device 160 Own vehicle position detection device 170 Communication device 200 Work base 201 Terminal device 201a Display unit 300 System network Center 301 Terminal device 301a Display unit 400 Satellite communication network 500 Communication network

Claims (5)

In a road management system that generates road management information by exchanging information between a vehicle managing a road and the center,
Own vehicle position detecting means for detecting the current position of the vehicle;
Travel history storage means for storing the current position of the vehicle detected by the vehicle position detection means as travel history information of the vehicle in association with date and time information;
Display means for displaying a travel locus of the vehicle based on the travel history information stored in the travel history storage means;
The road track displayed on the display means is classified and displayed in a display form based on the date and time information. In the road management system according to claim 1,
The road management displayed on the display means is simultaneously displayed on the same screen in a plurality of display forms according to the elapsed time from the date and time included in the date and time information to the current date and time. system. In the road management system according to claim 1 or 2,
When there are a plurality of travel tracks on the same road, the travel track displayed on the display means is a travel track based on the travel history information with the latest date and time information among the plurality of travel tracks. A road management system characterized by In the road management system according to any one of claims 1 to 3,
The road management system characterized in that the travel history information includes information indicating which lane of a road having a plurality of lanes on one side. Travel history storage means for storing the current position of the vehicle managing the road as the travel history information of the vehicle in association with the date and time information;
Display means for displaying a travel locus of the vehicle based on the travel history information stored in the travel history storage means;
The road track displayed on the display means is classified and displayed in a display form based on the date and time information.

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