JPH10162291A - Avm system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To exactly guide respective moving vehicles to a traveling route according to distributing instruction by providing a traffic information storage means for merging traffic information, which is received by a base station side traffic information receiving means, with traffic information from a mobile station and storing the result as traffic information. SOLUTION: VICS information sent from the mobile station is inputted from a mobile communication equipment 11 through a MODEM 12 to a central signal processor 14 at the base station and stored in a traffic information storage device 25. Besides, data provided from a VICS receiver 20 are similarly stored in the traffic information storage device 25 as well. When a distributing position is designated from a data input terminal 13, based on the traffic information stored in the traffic information storage device 25, the time for arrival from each mobile station (vehicle) to the distributing position (target spot) is calculated and the time for arrival from each vehicle position to the distributing spot is displayed on a map/jam information display 15 while being coupled with a map from a map data base 17.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle operation management system represented by an AVM system, and more particularly to a GPS system.
(Global positioning system), etc. Detects the dynamics of moving vehicles using sensors installed on roads, etc., and reports the information necessary for road traffic to vehicles via radio and optical communications in real time. The present invention relates to a system that integrates a technology for exchanging data and a technology for exchanging data by connecting a moving vehicle and a base station with a mobile communication device to perform necessary information processing and perform an optimal vehicle operation command.

[0002]

2. Description of the Related Art In a conventional AVM system, road congestion necessary for vehicle operation management is almost always made using information reported irregularly by a driver of a moving vehicle. A system has been proposed that automatically detects the average moving speed of a vehicle using a vehicle speed sensor installed in a base station and uses the base station to manage the operation of the vehicle. In general, the amount of information is small and the practical effect is not expected much.

[0003]

SUMMARY OF THE INVENTION A congestion situation is accurately and quickly grasped by a base station over the entire road on which a vehicle operates, which is used in a taxi dispatching business and the like, and an appropriate operation instruction is given to each vehicle. The challenge is that the cost of collecting information must be reasonable. VICS, which was officially started operating in the Tokyo metropolitan area in July 1996, has been notified of congestion over all major roads and is updated every 15 minutes to the latest traffic condition, so it is practical. Is also expensive. In addition, VICS will be in the Chubu area,
It is becoming a nationwide system with plans to be installed sequentially in the Kansai area and major arterial roads, making it even more practical. The VICS road information is constantly transmitted from FM multiplex broadcasting and radio waves and optical beacons installed near the road, and can be received by the VICS dedicated receiver installed in a vehicle or the like when necessary information is needed. Mainly, FM multiplex transmits wide area, and each beacon transmits local information.

[0004] However, such information in VICS is used independently by each vehicle and base station, and
The useful information was not used efficiently enough. In view of the above, the present invention makes effective use of road information such as VICS, makes comprehensive judgments using many useful road information, and, for example, displays an accurate road congestion state on a map on a display. It is an object of the present invention to provide an AVM system capable of displaying an instruction and the like for each moving vehicle so as to provide an accurate dispatch instruction and guidance to a traveling route.

[0005]

In order to solve the above-mentioned problems, the present invention comprises a base station and a mobile station provided in a mobile vehicle, and the position of the mobile vehicle can be monitored by the base station. In an AVM (Automatic Vehicle Monitoring) system, a base station side traffic information receiving means installed at the base station and receiving traffic information, and a mobile station side traffic information reception installed at the mobile station and receiving traffic information Means, installed in the mobile station, transmitting means for transmitting traffic information received by the mobile station side traffic information receiving means to the base station, installed in the base station,
Receiving means for receiving the traffic information transmitted by the transmitting means, traffic information received by the base station side traffic information receiving means, and integrating the traffic information from the mobile station received by the receiving means, Traffic information storage means for storing as traffic information.

[0006] Further, based on the traffic information stored in the traffic information storage means, a calculating means for estimating the time required for each moving vehicle to reach the destination, and a calculation result of the calculating means, Display means for displaying on a display together with an identification symbol indicating each moving vehicle, and transmitting traffic information stored in the traffic information storage means to the mobile station, which is installed in the base station. Traffic information transmitting means, a mobile station-side traffic information storage means installed in the mobile station and storing traffic information transmitted by the traffic information transmitting means of the base station; and the mobile station installed in the mobile station. Mobile station side computing means for estimating the arrival time required for the moving vehicle to reach the destination based on the traffic information stored in the side traffic information storage means, and installed in the mobile station;
A time data transmitting means for transmitting to the base station the arrival time estimated by the mobile station-side calculating means; and a mobile vehicle installed in the base station, receiving the calculation result transmitted by the time data transmitting means, and And display means for displaying on the display together with the identification symbol indicating

A calculating means installed at the base station for estimating a time required for each moving vehicle to reach a destination based on traffic information stored in the traffic information storing means; Installed in the base station, comparing the calculation result of the calculation means and the calculation result transmitted by the received time data transmission means, the longer time data as the arrival time, along with an identification symbol indicating each moving vehicle Selection means for selecting display on the display.

[0008] When there are a plurality of mobile stations installed in the base station and reaching the estimated destination at a predetermined time or less, the mobile station with the shortest distance to the target point is determined to be a dispatching candidate mobile vehicle. It is characterized by having a vehicle allocation candidate determining means. Installed in the base station, when there are multiple dispatch positions, priority setting means to set the priority of dispatch,
A processing order setting unit that performs a selection process of the allocation candidate vehicles in the order of the set priorities when the priority order is set to the allocation by the priority order setting unit.

When the vehicle is located at the base station and has a plurality of dispatching positions, all arrival time calculating means for calculating arrival times of all the vehicles to be dispatched to all dispatching positions; Total arrival time calculating means for calculating the sum of the arrival times in the dispatching pattern of all the moving vehicles, and dispatching pattern setting means for setting the dispatching pattern with the smallest total arrival time calculated by the total arrival time calculating means as the dispatching candidate And characterized in that:

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the AVM system according to the present invention will be described with reference to the drawings. FIG. 1 is a diagram schematically illustrating a configuration of a base station of an AVM system according to an embodiment, and FIG. 2 is a diagram schematically illustrating a configuration of a mobile station. VICS traffic information is different from the following three systems. FM multiplex broadcasting (existing broadcasting equipment): Provides traffic information over a wide area using FM broadcasting waves. Radio beacon (expressway): Provides mainly traffic information on the expressway required at the beacon installation location using radio waves as a medium. Optical beacon (main arterial road): Provides traffic information on the main arterial road necessary for the location of the beacon using light as a medium.

The base station shown in FIG. 1 is roughly divided into a mobile communication device 11 and a microphone 19 necessary for communication with the mobile station, a modem 12 for transmitting and receiving data, a central signal processing device 14 for performing overall control of the AVM system, A data input terminal 13 for operating this, a map data base 17 for a region where dispatch is performed,
A master file 18 for storing various data relating to vehicle operation and vehicles, a display 15 for displaying necessary information such as maps and congestion, a display 16 for displaying operation management status, and an FM for receiving wide area VICS traffic information
It comprises a broadcast receiver 21, an FM multiplex signal receiving circuit 22 for separating traffic information, and a VICS signal processing circuit 23 for decoding VICS information. The VICS receiver 20 is configured by the FM broadcast receiver 21, the FM multiplexed signal receiving circuit 22, and the VICS signal processing circuit 23.

The mobile communication device 11 includes a receiving circuit for receiving a signal from the mobile station, and a transmitting circuit for transmitting data from the base station to the mobile station and voice input from the microphone 19. The modem 12 includes a conversion circuit that converts a digital signal processed by the central processing unit 14 and a communication signal suitable for communication with each other. The central signal processing device 14 performs input / output processing and arithmetic processing of various data, and controls peripheral devices such as a display and various storage devices, and is configured by a microcomputer.
The data input terminal 13 is for inputting various data and instructing an operation by an operation of an operator, and is constituted by input devices such as a keyboard and a mouse. The display 15 is a display for displaying a map and traffic information, such as a CRT display or a liquid crystal display capable of displaying details. The display 16 displays the status of each mobile station (vacant / actual vehicle, existing area, etc.), and includes a CRT display or an electronic bulletin board using a large number of LCDs or the like according to the size and resolution suitable for the use situation. Used. The map database 17 in which the map data is stored,
The central signal processing unit 14 includes a large-capacity storage device, for example, a large-capacity hard (magnetic) disk or optical disk.
The required data is read out under the control of. The operation / vehicle master file 18 in which various data relating to the operation of the vehicle and the vehicle are stored is constituted by a writable storage device, for example, a hard (magnetic) disk, and required data is controlled by the central signal processing device 14. Reading and writing are performed. The traffic information storage device 25 is composed of a writable storage device, for example, a hard (magnetic) disk, and reads and writes necessary data under the control of the central signal processing device 14. Traffic information from the device 20 and the mobile station is stored and read and used as needed. , FM broadcast receiver 21
Is composed of a tuning and detection circuit for receiving FM broadcasting, and outputs an FM demodulated signal. Note that F
In the case of M multiplex broadcasting, the FM demodulated signal contains data (multiplexed data). Then, an audio signal of the FM broadcast is output from the speaker 24. Further, the FM multiplexed signal receiving circuit 22 is configured by a decoder that extracts and decodes data included in the FM demodulated signal and outputs a digital signal. The VICS signal processing circuit 23 processes the digital signal from the FM multiplexed signal receiving circuit 22 in accordance with the rules such as the format defined by VICS, decodes what kind of data the received data is, The required name data is output under the control of the control unit 14, and is constituted by a microcomputer, a memory, and the like.

The mobile station shown in FIG. 2 is roughly divided into a vehicle position detecting unit 30 for measuring the position of the vehicle, a geomagnetic sensor 35, a gyro compass 36, a vehicle speed sensor 37, and a VICS for receiving VICS traffic information. It comprises a receiving unit 30, a mobile communication device 52 for communicating with a base station, a display device 39 for displaying necessary data, and an operating device 38 for inputting data.

The GPS receiver 31 is a receiver of a positioning system (global positioning system) using satellites, receives a signal from a GPS satellite via a GPS antenna installed on a roof of a vehicle, and demodulates the signal. And output. The absolute position calculation circuit 32 performs a predetermined operation on the data from the GPS receiver 31, calculates the latitude and longitude of the vehicle position, and outputs the calculated position to the position detection processing / control circuit. The azimuth / distance calculation circuit 33
Using the absolute direction signal from the geomagnetic sensor 35, the relative direction signal from the gyro compass, and the vehicle speed signal from the vehicle speed sensor 37, the position of the vehicle is detected by performing arithmetic processing such as integration processing and initialization processing. And a microcomputer. The position detection processing / control circuit controls the entire device (mobile station), including input / output processing and arithmetic processing of various data, and control of peripheral devices such as a display and various storage devices, and is configured by a microcomputer. Is done. The traffic information storage device 54 includes the VICS receiving unit 40
And stores traffic information from the base station and the like, and is constituted by a memory (RAM) or a hard disk. The operating device 38 is for inputting various data and instructing operations by an operation of the operator, and is configured by input devices such as a keyboard and a mouse. The display 39 is a display for displaying a map, traffic information, a dispatch instruction, and the like. A small-sized liquid crystal display or CRT display capable of displaying details is used.

The radio wave beacon receiver 41 is for receiving traffic information from a radio wave beacon transmitter installed on the road via a radio beacon antenna installed in the automobile, and includes a tuning circuit, an amplification circuit, and a demodulation circuit. It is composed of a circuit or the like and outputs a decoded digital signal. The optical beacon transceiver 42 is for receiving traffic information from the optical beacon transmitter installed on the road via an optical beacon transmission / reception sensor (constituted by a light emitting / receiving element or the like) installed in the automobile. It is composed of a decoding circuit, an amplification circuit, an encoding circuit, etc., and outputs the decoded digital signal to the VICS signal processing circuit 44 and the VICS signal processing circuit 4.
4 is encoded and transmitted from the optical beacon transmission / reception sensor. The FM broadcast receiver 46 includes a tuning and detection circuit for receiving FM broadcast, and outputs an FM demodulated signal. In the case of FM multiplex broadcasting, the FM demodulated signal contains data (multiplexed data). Then, an audio signal of the FM broadcast is output from the speaker 47. Further, the FM multiplexed signal receiving circuit 43 is configured by a decoder that extracts and decodes data included in the FM demodulated signal and outputs a digital signal. The VICS signal processing circuit 44 processes the digital signals from the radio beacon receiver 41, the optical beacon receiver 42, and the FM multiplexed signal receiving circuit 43 according to the rules such as the format defined by VICS, and determines how the received data is processed. It decodes the data and outputs necessary data under the control of the position detection processing / control circuit 34, and is composed of a microcomputer, a memory, and the like.

The mobile communication device 52 includes a receiving circuit for receiving a signal from the base station, and a transmitting circuit for transmitting data from the mobile station to the base station and voice input from the microphone 53. The modem 51 includes a conversion circuit that converts a digital signal processed by the position detection processing / control circuit 34 and a communication signal suitable for communication with each other. next,
Main operations of the base station and the mobile station will be described. The vehicle position detection unit 30 amplifies and decodes the signal received from the GPS antenna by the GPS receiver 31, and then calculates the absolute position calculation circuit 3.
In step 2, the data is converted into latitude and longitude and sent to the position detection processing / control circuit 34. On the other hand, geomagnetic sensor 35, gyro compass 3
6, and the self-contained navigation data obtained from the vehicle speed sensor 37 is used to calculate the position of the own vehicle by the azimuth / distance calculation circuit 33, and the local position data is sent to the next position detection processing / control circuit. Here, the previous GPS data and the local position data are combined, that is, the respective data complement each other, and the accurate vehicle position is calculated. If high-accuracy position information is not required, it may be configured with only a GPS system or a self-contained navigation system.

Each running vehicle receives the VICS information in a radio beacon, amplifies and decodes it in a radio beacon receiver 41, and sends it to a VICS signal processing circuit 44. The signal obtained by the optical beacon transmission / reception sensor is amplified and decoded by the optical beacon receiver 42, and then sent to the VICS signal processing circuit 44. A multiplex signal (VICS information) of the FM broadcast signal received by the FM broadcast receiving antenna is transmitted to the FM multiplex receiving circuit 43.
After being amplified and decoded, the signal is sent to the VICS signal processing circuit 44.
The VICS information obtained from the three routes is decoded into traffic information and sent to the position detection processing / control circuit 34. Here, the information is combined with the vehicle position information, modulated by the modem 51, and transmitted from the mobile communication device 52 to the base station via the mobile communication antenna. This information is displayed together with a map or the like on the display device 39 of the mobile station as needed. When the VICS signal obtained from the FM multiplex broadcast is also received by the base station, there is no need to send the VICS signal from the moving vehicle.

The VIC transmitted from the mobile station in this manner
The S information is input to the central signal processing device 14 from the mobile communication device 11 via the modem 12 at the base station, and is stored in the traffic information storage device 25. In the traffic information storage device 25, the data at the same point is processed so as to be rewritten with the latest data. In addition, each mobile station (vehicle)
Is stored in the operation / vehicle master file 18. The data obtained from the VICS receiving device 20 is also stored in the traffic information storage device 25 in the same manner. When the dispatch position is designated by the data input terminal 13, the arrival time from each mobile station (vehicle) to the dispatch position (destination point) is determined based on the traffic information stored in the traffic information storage device 25. The calculated position of each vehicle and the arrival time at the dispatch point are combined with the map from the map data base 17 and displayed on the map / congestion information display 15. When the arrival time is calculated, a route that can be reached in the shortest time using the traffic information is also calculated. The operator looks at this display, decides the dispatch vehicle,
Using the microphone 19, a dispatch command (location and shortest route) is transmitted by voice. Note that the central signal processing device 14 may automatically issue a dispatch instruction to a vehicle whose arrival time is the shortest. In this case, when the dispatch instruction data is transmitted from the base station and the dispatch instruction data is received at the mobile station, a method of displaying the dispatch instruction contents (the dispatch position, the shortest time route, etc.) on the display 39, or voice synthesis. A method of transmitting a dispatch instruction to a mobile station by voice using the device can be realized. In general, operation management is effectively operated by using both data communication and voice communication.

FIG. 3 is a simplified diagram showing an example of a typical map display screen in a base station, and a method for instructing a vehicle operation will be described with reference to FIG. When the destination (distribution position) c is set, the arrival time is displayed near the display position of each of the vehicles A, B, C, and D on the map (the unit is minutes, and the display of the unit is omitted). . Then, for the vehicle with the shortest arrival time, the route (a, b, c) to the destination c is displayed. Also,
Other display contents include zones, which are management area units used in the AVM system, positions of optical beacons and radio beacons, road types, congested roads (color changes),
There are traveling directions of each vehicle. Note that such display control is performed under the control of the central signal processing device 14. The central signal processing device 13 calculates a route that can be reached in the shortest time from the position of the vehicle, the destination, the length of the road to be passed, and the average traveling speed obtained from the VICS.

FIG. 4 is a simplified diagram showing an example of a typical map display screen in a mobile station, and the display contents in the mobile station will be described based on this. When the base station receives the dispatch instruction, the base station receives the shortest time route data and the traffic information data sent together with the dispatch instruction, and the traffic information storage device 5
4 is stored. The display 39 shows the current position of the own vehicle, the destination (distribution position), and the shortest route (a, b,
c, e: a method of changing the display color of the road), and the average traveling speed of each road is displayed. Note that such display control is performed under the control of the position detection processing / control circuit 34.

That is, according to the present embodiment, F
The M multiplex broadcast is directly received to obtain traffic information of the entire dispatching service area, and each mobile station is equipped with a VICS beacon receiver and individually collects local congestion information and transmits it to the base station. The base station then makes comprehensive judgments based on the collected traffic information of the entire service area and local traffic information, and displays the congestion status etc. on a map on the display to accurately allocate vehicles to each mobile vehicle. It gives instructions and guides you to the driving route.

Next, basic processing performed by the central signal processing device 14 of the base station and the position detection processing / control circuit 34 of the mobile station will be described. FIG. 5 is a flowchart showing a traffic information transmission process performed by the position detection process / control circuit 34 of the mobile station, which is sequentially and repeatedly executed together with other control processes. In step S1, it is determined whether or not the traffic information has been updated, that is, whether or not new traffic information has been received. If it has been received, the process proceeds to step S2, and if it has not been received, this process ends. The determination as to whether the traffic information is new traffic information is made by comparing the data included in the traffic information received in the past, for example, the data update time, with the data included in the traffic information just received, for example, the data update time. I can do it. In step S2, the received updated traffic information is transmitted to the base station, and the process ends. By this processing, the updated local traffic information received by the mobile station is transmitted to the base station.

FIG. 6 is a flowchart showing a traffic information receiving process performed by the central signal processing device 14 of the base station, which is sequentially and repeatedly executed together with other control processes. Step S
In 11, whether traffic information has been received, that is, VIC
Whether traffic information is output from the S receiving unit 41,
Alternatively, it is determined whether or not traffic information from the mobile station is output from the mobile communication device 52, and if it is received, the process proceeds to step S1.
The process moves to 2, and if not received, this process ends. In step S12, the received new traffic information is stored in the traffic information storage device 25, and the process ends. In this storage process, a process of rewriting old data in the past (data of the same type and same location as new data) with new data is performed. By this processing, the latest wide area and local traffic information is stored in the traffic information storage device 25 of the base station.

FIG. 7 is a flowchart showing a vehicle allocation process performed by the central signal processing device 14 of the base station, which is sequentially and repeatedly executed together with other control processes. In step S21,
It is determined whether or not the vehicle allocation position has been input, that is, whether or not the vehicle allocation position has been input by the operation device 38. If there is a vehicle allocation position input, the process proceeds to step S22. If there is no vehicle allocation position input, the process ends. In step S22, based on the traffic information stored in the traffic information storage device 54 and the position of each mobile station stored in the operation / vehicle master file 18, it is necessary for each vehicle to reach the target position. The time is calculated, and the routine goes to Step S23. In step S23, the vehicle allocation information is displayed on the map / congestion information display 16. Specifically, the position of each vehicle (mobile station), identification code, arrival time to the destination, traffic congestion on the road around the destination, display of the vehicle with the shortest arrival time (color change, etc.)
And the process moves to step S24. In step S24,
It is determined whether the dispatched vehicle has been determined. That is, it is determined whether or not an operation for designating a vehicle to be dispatched has been performed by the operating device 38. If there is an operation for confirming the vehicle to be dispatched, the process proceeds to step S25. . In step S25, vehicle allocation data, for example, vehicle allocation position data, route data to the vehicle allocation position, road (congestion) situation data around the route to the vehicle allocation position, and the like are transmitted to the vehicle for which the vehicle allocation has been determined, and the process ends. In the case where the dispatch instruction to the vehicle is issued by voice, the processing of step S24 and step S25 becomes unnecessary. With this processing, it is possible to easily perform appropriate vehicle allocation processing.

FIG. 8 shows the position detection processing / control circuit 3 of the mobile station.
6 is a flowchart illustrating a vehicle allocation process performed by the vehicle control unit No. 4, and is sequentially and repeatedly executed together with other control processes. Step S31
Then, it is determined whether or not vehicle allocation data has been received from the base station, that is, whether or not vehicle allocation data has been output from the mobile communication device 52. If it has been received, the process proceeds to step S32, and if it has not been received, this processing ends. . In step S32, the traffic information included in the received vehicle allocation data is stored in the traffic information storage device 54, and the vehicle allocation information is displayed on the display 39, followed by terminating the present process. The display contents on the display 39 include a dispatch position, a route to the dispatch position,
Information such as traffic jam information is displayed on a map displayed on the display 39, for example. By this processing, information useful for moving to the dispatch position is displayed on the display 39 of the mobile station, and it is possible to move to the dispatch position efficiently.

Next, another embodiment of the vehicle allocation processing method will be described. FIG. 9 is a flowchart showing a vehicle allocation process performed by the central signal processing device 14 on the base station side, and FIG. 10 is a flowchart showing a vehicle allocation process performed by the position detection processing / control circuit 34 on the mobile station side, together with other control processes. It is executed sequentially and repeatedly. In this description, the vehicle allocation processing part is mainly described, and transmission of traffic information data and the like is omitted.

First, the vehicle allocation processing on the base station side in FIG. 9 will be described. In step S41, it is determined whether or not the vehicle allocation position has been input, that is, whether or not the vehicle allocation position has been input by the operation device 38.
The process proceeds to 42, and if there is no vehicle allocation position input, this processing ends.
In step S42, the input vehicle allocation position data is transmitted to the mobile station, and the process proceeds to step S43. In step S43, a process of receiving data on the required time to the vehicle allocation position transmitted from the mobile station is performed, and the process proceeds to step S44. In step S44, it is determined whether or not a predetermined time has elapsed since the dispatch position transmission (step S42). If it has elapsed, the process proceeds to step S45, and if not, the process returns to step S44. That is, a process of waiting for data transmission from each mobile station for a predetermined time after the dispatch position transmission is performed. Step S4
At 5, the vehicle / allocation information is displayed on the map / congestion information display 16. Specifically, the position of each vehicle (mobile station), identification code, arrival time to the destination, traffic congestion on the road around the destination, display of the vehicle with the shortest arrival time (color change, etc.) are performed. Move to step S46. In step S46, it is determined whether the dispatched vehicle has been determined. That is, it is determined whether or not an operation for designating a vehicle to be dispatched has been performed by the operation device 38.
The process proceeds to step S47, and if there is no confirmation operation, the process of step S46 is continued until there is a confirmation operation. Step S4
In step 7, vehicle allocation data, for example, vehicle allocation position data, route data to the vehicle allocation position, road (congestion) situation data around the route to the vehicle allocation position, and the like are transmitted to the vehicle for which the vehicle allocation has been determined, and the process ends.

Next, the vehicle allocation processing on the mobile station side in FIG. 10 will be described. In step S51, it is determined whether or not the dispatch position transmitted from the base station has been received. If it has been received, the process proceeds to step S52, and if not, the process proceeds to step S54. In step S52, the arrival time to the received vehicle allocation position is calculated based on the traffic information stored in the traffic information storage device 54, and the process proceeds to step S53. In step S53, the vehicle data, that is, the vehicle identification number, the arrival time at the vehicle allocation position, and the like are transmitted to the base station.
Move on to 54. In step S54, it is determined whether or not a dispatch command has been received from the base station.
The process proceeds to 55, and if not received, this process ends. In step S55, the traffic information included in the received dispatch data is stored in the traffic information storage device 54, and the dispatch information is displayed on the display 39, followed by terminating the present process. still,
The display contents on the display 39 include a dispatch position, a route to the dispatch position, traffic congestion information, and the like.
These information are displayed on the map displayed in FIG.

According to the vehicle allocation processing method described above, the calculation of the arrival time to the vehicle allocation position is performed on each mobile station side. Therefore, even if the number of mobile stations increases, the processing on the base station side does not increase so much, and it is possible to avoid problems such as a reduction in processing speed. Next, the process of correcting the arrival time of each vehicle at the dispatch position will be described. FIG.
Is a flowchart showing the arrival time correction process, which is performed when arrival time data is used, such as displaying the arrival time, and is performed by the central signal processing device 14 on the base station side.
In step S61, the traffic information storage device 25 on the base station side
Arrival time calculated based on the traffic information stored in the
The arrival times calculated based on the traffic information stored in the traffic information storage device 54 on the mobile station side are compared, and the longer time is selected as the arrival time, and the process proceeds to step S62. In step S62, the vehicle allocation information is displayed on the map / congestion information display 16 using the arrival time selected in step S61. Specifically, the position of each vehicle (mobile station), the identification symbol, the arrival time to the destination, the traffic congestion on the road around the destination, the display of the vehicle with the shortest arrival time (color change, etc.) and processing Finish.

If the above-described arrival time correction processing is performed, the longer arrival time of the arrival time based on the calculation processing on the mobile station side and the arrival time based on the calculation processing on the base station side is obtained. Since it is used as data for vehicle allocation determination, it is possible to prevent the arrival time from being predicted incorrectly due to inadequate data or the like, and to prevent the customer from waiting for a long time contrary to the prediction.

Next, another vehicle allocation process will be described. FIG.
Reference numeral 2 is a flowchart showing a vehicle allocation process, which is performed when a vehicle allocation is automatically selected or when a vehicle allocation candidate is selected (when a vehicle allocation candidate is selected and a display color is changed). In step S71, vehicles whose arrival time at the vehicle allocation position is within a predetermined time are extracted, and the process proceeds to step S72.
In step S72, it is determined whether or not there are a plurality of vehicles whose arrival time is within a predetermined time. If there are a plurality of vehicles, the process proceeds to step S73.
Move on to In step S73, the vehicle having the shortest distance to the vehicle allocation position is selected as a vehicle allocation candidate, and the process ends.
In step S74, the vehicle having the shortest arrival time at the vehicle allocation position is selected as a vehicle allocation candidate, and the process ends.

As described above, according to the present vehicle allocation processing, if the arrival time to the vehicle allocation position does not substantially differ, a vehicle with a short distance is selected, so that the traveling distance becomes short, and Load can be reduced, and effects such as fuel saving can be obtained. Next, another vehicle allocation processing will be described. FIG. 13 is a flowchart showing a vehicle allocation process, which is performed when a vehicle allocation is automatically selected or when a vehicle allocation candidate is selected (when a vehicle allocation candidate is selected and a display color is changed). In step S81, it is determined whether or not the dispatch positions have a priority. If there is a priority, the process proceeds to step S82, and if there is no priority, the process proceeds to step S85. The priorities are input by the data input terminal 13 and stored in the operation / vehicle master file 18, and the priorities are determined based on the data. In step S82, a vehicle allocation request with a priority is extracted, and the process proceeds to step S83. Step S83
Then, the process of allocating the vehicle having the shortest arrival time to the dispatch position is performed in order from the one with the highest priority, and the process proceeds to step S84. In step S85, it is determined whether there is a dispatch request for which dispatch has not been completed. That is,
It is determined whether there is a dispatch request for which a priority is not set, and if there is such a dispatch request, the process proceeds to step S85, and if there is no such dispatch request, the process ends. In step S85, the arrival time of all vehicles at each dispatching position where dispatch is not completed is calculated, and the process proceeds to step S86. In step S86, the total required time, that is, the sum of the arrival times is calculated for all combinations of the allocation positions and the allocation relations of all vehicles, and the process proceeds to step S87. Step S87
Then, the vehicle allocation pattern of the combination with the minimum total required time calculated in step S86 is selected as a vehicle allocation instruction candidate, and the process ends. Thereafter, display and the like are performed according to the selected vehicle allocation pattern.

According to the above-described vehicle allocation processing, when a vehicle is assigned a priority in response to a request from a customer, the vehicle is allocated based on the priority, so that efficient vehicle allocation can be performed. It becomes possible. Also, when there are a plurality of dispatch requests, a dispatch pattern that minimizes the sum of arrival times to the dispatch position is selected as a dispatch candidate,
Overall, the burden on the driver is small, fuel can be saved, and vehicles can be dispatched without waiting much for customers.

[0034]

The AVM according to the present invention (automatic
According to the vehicle monitoring system, VICS
In addition to making effective use of such road information and making comprehensive judgments using a lot of useful road information, for example, an accurate road congestion state etc. is displayed on a map on the display, and accurate It is possible to provide an AVM system that can provide a simple dispatch instruction and guidance to the travel route, etc.
An efficient dispatch system can be constructed.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing a configuration of a base station.

FIG. 2 is a configuration diagram showing a configuration of a mobile station.

FIG. 3 is a display state diagram showing an example of display of vehicle allocation information.

FIG. 4 is a display state diagram showing an example of display of vehicle allocation information.

FIG. 5 is a flowchart showing traffic information transmission processing of a mobile station.

FIG. 6 is a flowchart showing traffic information reception processing of a base station.

FIG. 7 is a flowchart showing a vehicle allocation process of the base station.

FIG. 8 is a flowchart illustrating a vehicle allocation process of the mobile station.

FIG. 9 is a flowchart showing vehicle allocation processing 2 of the base station.

FIG. 10 is a flowchart showing a vehicle allocation process 2 of the mobile station.

FIG. 11 is a flowchart illustrating an arrival time correction process.

FIG. 12 is a flowchart showing an automatic vehicle allocation process.

FIG. 13 is a flowchart showing automatic multiple vehicle allocation processing.

[Explanation of symbols]

 11, 52 mobile communication device 14 central signal processing device 25, 54 traffic information storage device 34 position detection processing / control circuit 44 VICS signal processing circuit

Claims (7)

[Claims] An AVM (Automatic Vehicle Monitoring) system comprising a base station and a mobile station provided in a mobile vehicle, wherein the base station can monitor the position of the mobile vehicle. A base station-side traffic information receiving unit that receives traffic information; a mobile station-side traffic information receiving unit that is installed in the mobile station and receives traffic information; and is installed in the mobile station and receives the mobile station-side traffic information. Transmitting means for transmitting the traffic information received by the means to the base station; receiving means installed in the base station for receiving the traffic information transmitted by the transmitting means; and receiving by the base station side traffic information receiving means. From the traffic information received from the mobile station received by the receiving means, and from the traffic information storage means for storing as traffic information AVM system according to claim Rukoto. 2. A calculating means installed in the base station and estimating the arrival time required for each moving vehicle to reach a destination based on traffic information stored in the traffic information storing means, 2. The AVM system according to claim 1, further comprising a display unit installed in said base station, for displaying on a display a calculation result of said calculation unit together with an identification symbol indicating each moving vehicle. 3. A traffic information transmitting unit installed in the base station and transmitting traffic information stored in the traffic information storing unit to the mobile station; and a traffic information transmission unit installed in the mobile station and transmitting traffic information of the base station. A mobile station-side traffic information storage means for storing the traffic information transmitted by the means; and a mobile station installed at the mobile station, wherein the mobile vehicle is located at a destination point based on the traffic information stored in the mobile station-side traffic information storage means. Mobile station-side computing means for estimating the arrival time required to reach the mobile station; and time data transmitting means installed in the mobile station and transmitting the estimated arrival time estimated by the mobile station-side computing means to the base station. And a display unit that is installed in the base station, receives the calculation result transmitted by the time data transmission unit, and displays it on a display together with an identification symbol indicating each moving vehicle. AVM system described. 4. An arithmetic unit installed in the base station and estimating an arrival time required for each mobile vehicle to reach a destination based on traffic information stored in the traffic information storage unit, Installed in the base station, comparing the calculation result of the calculation means and the calculation result transmitted by the received time data transmission means, the longer time data as the arrival time, along with an identification symbol indicating each moving vehicle 4. A selecting means for selecting to be displayed on a display device.
AVM system as described. 5. When there are a plurality of mobile stations installed in the base station and reaching the estimated destination at a predetermined time or less, the mobile station with the shortest distance to the destination is a candidate moving vehicle. 5. The AVM according to claim 2, further comprising a vehicle allocation candidate determining means.
system. 6. A priority order setting means which is installed in the base station and sets a priority of dispatching when there are a plurality of dispatching positions, and when the dispatching priority is set by the priority order setting means, 6. The AVM system according to claim 2, further comprising: a processing order setting unit configured to perform a selection process of the allocation candidate vehicles in the order of the set priorities. 7. An all-arrival time calculating means installed at the base station and, when there are a plurality of allocation positions, calculating an arrival time of all mobile vehicles to be allocated to all allocation positions; A total arrival time calculating means for calculating the sum of the arrival times in the dispatching pattern of all the mobile vehicles to be dispatched, and a dispatching pattern in which the dispatching pattern calculated by the total arrival time calculating means and having the smallest arrival time is a dispatching candidate. 4. The apparatus according to claim 2, further comprising a setting unit.
The AVM system according to claim 4, 5, or 6.