JP2007264878A - Bus position management system and position information transmission/reception method of bus position management system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To acquire the absolute position of a bus including the value of the high-order digits of latitude information and longitude information and to reduce a data amount to be transmitted further in a bus management device. <P>SOLUTION: The bus position management system is provided with a vehicle position detector mounted on the bus and the bus management device for receiving the position information of the bus from the vehicle position detector and managing the bus. The vehicle position detector obtains the area ID of the traveling area of the bus and a reference position from the absolute position of the bus, and obtains the relative position of the bus on the basis of the obtained reference position and the absolute position. The vehicle position detector 1 transmits the area ID and the relative position to the bus management device. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  Bus position management system having a vehicle position detection device mounted on a bus, and a bus management device that receives bus position information from the vehicle position detection device and manages the position of the bus, and position information of the bus position management system It relates to a transmission / reception method.

  Each bus stop (bus stop) of the route bus has a timetable (departure / departure timetable) for each bus destination. Passengers using the route bus can go to a desired destination by boarding the bus that arrives according to the timetable.

  However, the road conditions change in a complicated manner due to traffic congestion, road construction, etc., so the route bus may not arrive at the bus stop according to the timetable and may be delayed from the scheduled time. For this reason, today, it is possible to notify the passengers waiting for the bus of the bus operation status by displaying the delay time of the bus on the display device of the bus stop or a portable terminal such as a mobile phone. The system is built.

  A general bus operation status confirmation system is constructed by an in-vehicle device installed in each bus and a bus management center that manages the operation status of each bus. The in-vehicle device calculates the current location of the bus using a GPS antenna or the like, and transmits the calculated location information and bus ID information for specifying the bus to the bus management center using a mobile phone, a wireless LAN, or the like. .

  The bus management center receives the bus position information and the bus ID, specifies the bus based on the received bus ID, and then the position where the bus should pass and the received bus position information. And the bus delay time for each bus stop is calculated.

The bus delay time calculated in this way is transmitted to each bus stop using a wireless communication means such as a mobile phone and displayed on the display device at each bus stop. The delay time of the bus is always disclosed via the Internet or the like, and the passenger can search the bus operation state using a mobile phone or the like (see, for example, Patent Document 1).
JP 2002-63692 A (page 4, FIGS. 1 to 3)

  However, in the bus operation status confirmation system as described above, there is a problem that communication cost becomes high because it is necessary to periodically transmit bus position information and the like from the in-vehicle device to the bus management center. In particular, in today's bus operation status confirmation systems, data transmission is performed using packet transmission technology such as mobile phones, so it is desirable to reduce communication costs by reducing the data amount (packet amount). It was rare.

  The bus position information transmitted from the in-vehicle device to the bus management center is specifically composed of latitude information and longitude information. Here, since latitude information and longitude information have almost no change in the value of the upper digit (for example, a value corresponding to “degree” (hereinafter referred to as a degree value)), the overlapping latitude and longitude degree value information Every time it was sent to the bus management center, there was a need to reduce this duplicate numerical information.

  On the other hand, there is a possibility that the bus route may be temporarily changed due to road construction, etc., so the latitude and longitude information power values (the values of the upper digits) are not always the same. If only the location information from which is deleted is transmitted to the bus management center, the bus management center may not be able to accurately grasp the location of the bus.

  For this reason, the frequency value of the position information is necessary information as position information even if it is overlapping information, and is currently included in the data transmitted from the in-vehicle device to the bus management center as position information.

  The present invention has been made in view of the above problems, and the bus management device (bus management center) obtains the absolute position of the bus including the upper digit value (for example, the degree value) of the latitude information / longitude information. It is another object of the present invention to provide a bus location management system and a location information transmission / reception method for the bus location management system that can reduce the amount of data to be transmitted.

  In order to solve the above-described problems, a bus position management system according to the present invention includes a vehicle position detection device mounted on a bus, and receives the bus position information from the vehicle position detection device to manage the position of the bus. The vehicle position detection system includes a position detection means for detecting the absolute position of the bus, an area ID for identifying the travel area of the bus, and the bus position management system. The vehicle area information recording means for recording a reference position predetermined for each area ID, and the travel area is obtained based on the absolute position detected by the position detection means, and the area ID corresponding to the travel area The area ID determining means for obtaining the vehicle ID from the vehicle area information recording means, and the basic position of the area ID obtained by the area ID determining means for the vehicle error information. A relative position calculation means for calculating the relative position of the bus based on the absolute position and the reference position, and the area ID determination means. And a transmission means for transmitting the area ID and the relative position calculated by the relative position calculation means to the bus management apparatus, wherein the bus management apparatus transmits the area transmitted by the transmission means. Receiving means for receiving the ID and the relative position, management area information recording means for recording the area ID and the reference position, and the reference position of the area ID received by the receiving means for the management Reference position determining means obtained from the area information recording means, the reference position obtained by the reference position determining means, and the relative position received by the receiving means Based on the location, and the absolute position calculating means for calculating the absolute position of the bus, and having a management control unit that manages the location of the bus based on the calculated absolute position.

  In addition, when the transmission unit cannot determine the corresponding area ID in the area ID determination unit, the absolute position detected by the position detection unit is transmitted to the bus management device, and the management control is performed. When the means receives the absolute position of the bus by the receiving means, the position management of the bus may be performed based on the received absolute position.

  Furthermore, the bus position management system according to the present invention includes a vehicle position detection device mounted on a bus, and a bus management device that receives the bus position information from the vehicle position detection device and manages the position of the bus. The vehicle position detection device is classified based on position detection means for detecting an absolute position made up of the longitude and latitude of the bus, and a frequency value of the longitude and latitude. The vehicle area information recording means for recording the area ID of the bus travel area, the travel area is obtained based on the absolute position detected by the position detection means, and the area ID corresponding to the area is determined for the vehicle. Area ID determination means obtained from area information recording means, and fractional value and second value of the absolute position detected by the position detection means Subordinate position extracting means, and the transmitting means for transmitting the area ID obtained by the area ID determining means and the subordinate absolute position extracted by the subordinate position extracting means to the bus management device. The bus management device includes: a receiving unit that receives the area ID and the lower absolute position transmitted by the transmitting unit; and the area ID and a latitude and longitude frequency value corresponding to the area ID. The management area information recording means to be recorded, the frequency value determining means for obtaining the latitude and longitude frequency values corresponding to the area ID received by the receiving means from the management area information recording means, and the receiving means Based on the received fractional value and second numerical value of the lower absolute position and the frequency value obtained by the frequency value determining means, the absolute position of the bus An absolute position calculating means for calculating may be one characterized by having a management control unit that manages the location of the bus based on the calculated absolute position.

  In addition, when the transmission unit cannot determine the corresponding area ID in the area ID determination unit, the absolute position detected by the position detection unit is transmitted to the bus management device, and the management control is performed. When the means receives the absolute position of the bus by the receiving means, the position management of the bus may be performed based on the received absolute position.

  Furthermore, the position information transmission / reception method of the bus position management system according to the present invention is a bus position management in which the position management of the bus is performed by the bus management apparatus based on the position information transmitted from the vehicle position detection apparatus mounted on the bus. A position information transmission / reception method for a system, wherein the vehicle position detection device detects an absolute position of a bus, and an area ID of a traveling area corresponding to the absolute position detected in the position detection step. The area ID determination step obtained by the vehicle area information recording means for recording the area ID for identifying the traveling area of the bus and the reference position predetermined for each area ID, and the area ID determination step. A basic position determining step for obtaining a basic position of the area ID from the vehicle area information recording means; and The relative position calculation step of calculating the relative position of the bus based on the absolute position and the reference position with the reference position determined by the step as a reference, and the area ID determined by the area ID determination step And a transmission step of transmitting the relative position calculated in the relative position calculation step to the bus management device, wherein the bus management device and the area ID transmitted in the transmission step A receiving step for receiving a position, and a reference position determining step for obtaining a reference position corresponding to the area ID acquired by the receiving step from a management area information recording unit in which the area ID and the reference position are recorded; , The reference position obtained by the reference position determining step and the previous position acquired by the receiving step An absolute position calculating step for calculating the absolute position of the bus based on the relative position, and a management control step for managing the position of the bus based on the absolute position calculated in the absolute position calculating step are executed. It is characterized by that.

  In the transmission step, if the corresponding area ID cannot be obtained in the area ID determination step, the absolute position is transmitted to the bus management device. In the management control step, the reception step When the absolute position of the bus is received, the bus position may be managed based on the received absolute position.

  Furthermore, the position information transmission / reception method of the bus position management system according to the present invention is a bus position management in which the position management of the bus is performed by the bus management apparatus based on the position information transmitted from the vehicle position detection apparatus mounted on the bus. A position information transmission / reception method for a system, wherein the vehicle position detection device detects an absolute position composed of a longitude and a latitude of a bus, and a frequency value of the absolute position detected by the position detection step. An area ID determining step for obtaining an area ID of the traveling area of the bus divided by the vehicle area information recording means for recording a predetermined area ID based on the longitude and latitude values; A lower position extraction step for extracting the fractional value and second value of the absolute position detected by the detection step as a lower absolute position A transmission step of transmitting the area ID obtained in the area ID determination step and the lower absolute position extracted in the lower position extraction step to the bus management device; The reception step for receiving the area ID and the lower absolute position transmitted in the transmission step, and the power value corresponding to the area ID received in the reception step correspond to the area ID and the area ID. A frequency value determining step obtained from a management area information recording means in which latitude and longitude frequency values are recorded, a fractional value and a second value of the lower absolute position received by the receiving step, and the frequency value determining step An absolute position calculating step for calculating the absolute position of the bus based on the obtained frequency value , And executes a management control step of performing location management of the bus based on the absolute position calculated in the absolute position calculating step.

  In the transmission step, when the corresponding area ID cannot be obtained in the area ID determination step, the absolute position is transmitted to the bus management device. In the management control step, the bus step is performed in the reception step. When the absolute position is received, the bus position may be managed based on the received absolute position.

  According to the bus position management system and the position information transmission / reception method of the bus position management system according to the present invention, the absolute position of the bus is not transmitted as it is to the bus management apparatus, but the position information including the area ID and the relative position is transmitted to the bus. Since the data is transmitted to the management apparatus, the data amount of the transmission information can be reduced, and the data communication fee can be reduced.

  Even when the bus deviates from the operation route and travels in a travel area that cannot be specified by the area ID, the vehicle control unit sends transmission information based on the absolute position detected by the position detection means to the bus management device. Since the transmission is performed, the bus management device can accurately grasp the traveling position of the bus.

  Hereinafter, a bus position management system according to the present invention will be described using a bus operation management system as an example.

  FIG. 1 is a block diagram showing a schematic configuration of a bus operation management system. The bus operation management system 1 includes a bus management center (bus management device) 2 that collectively manages a plurality of buses, and an in-vehicle device (vehicle position detection device) 3 that is installed on each bus to be managed. And have.

  The in-vehicle device 3 includes a GPS detection unit 31 for detecting the position of the bus, a recording unit 32 in which a plurality of information used for operation support is recorded, and a vehicle communication unit that transmits and receives information to and from the bus management center 2. 33 and a vehicle control unit 34 for performing various control processes in the vehicle.

  The GPS detection unit 31 includes a GPS antenna 31a and a detection main body 31b. The GPS detection unit 31 receives a GPS signal from a GPS satellite by the GPS antenna 31a, and acquires absolute position information and reception time information of the bus by the detection main body unit 31b based on the received GPS signal. The absolute position information is composed of latitude information and longitude information, and the latitude information and longitude information are each composed of information of three digits of degree, minute, and second.

  The recording unit 32 is configured by a recording medium such as a hard disk or a memory, and records area information obtained by dividing the bus operating range into a plurality of areas in consideration of the bus operating route. In the area information, an area ID for specifying each area is determined in advance, and the area ID of the corresponding area can be immediately obtained based on the bus position information. Each area ID has a reference position as a reference for each area, and the recording unit 32 records an area ID and information on a reference position associated with the area ID. .

  The vehicle communication unit 33 has a role of communicating with the bus management center 2 using a wireless communication technology such as a mobile phone, PHS, and wireless LAN. The vehicle communication unit 33 transmits the bus position information and the like obtained by the vehicle control unit 34 described below to the bus management center 2.

  The vehicle control unit 34 is a processing unit including a CPU and a memory (not shown), and mainly creates position information to be sent to the bus management center 2. FIG. 2 is a flowchart showing position information creation processing in the vehicle control unit 34.

  The vehicle control unit 34 acquires the absolute position information of the bus from the detection main body 31b of the GPS detection unit 31 (step S.1). Then, the vehicle control unit 34 obtains an area including the absolute position based on the acquired absolute position information, and searches whether the area ID and the reference position of the area are recorded in the recording unit 32 ( Step S.2).

  When the area ID and the reference position can be retrieved from the recording unit 32 (Yes in Step S.2), the vehicle control unit 34 extracts the area ID and the reference position from the recording unit 32 (Step S.2). S.3). And the vehicle control part 34 calculates | requires the relative position (latitude-latitude coordinate) of the absolute position contained in absolute position information by making the extracted reference | standard position into a reference | standard point (step S.4).

For example, as shown in FIG.
Latitude of absolute position is latitude: (X1 degree, Y1 minute, Z1 second),
The longitude of the absolute position is longitude: (X2 degrees, Y2 minutes, Z2 seconds),
The latitude of the reference position is latitude: (X3 degrees, Y3 minutes, Z3 seconds),
When the longitude of the reference position is longitude: (X4 degrees, Y4 minutes, Z4 seconds)
The absolute position relative to the reference position is
Latitude: ((X3-X1) degrees, (Y3-Y1) minutes, (Z3-Z1) seconds),
Longitude: ((X4-X2) degrees, (Y4-Y2) minutes, (Z4-Z2) seconds).

  Here, since the reference position is a point in the area divided in consideration of the bus operation route, the value of the absolute position and the value of the reference position are equal. In the above example, the latitude value X1 at the absolute position and the latitude value X3 at the reference position are equal, and the longitude value X2 at the absolute position and the longitude value X4 at the reference position are the same. It becomes equal value. For this reason, among the relative positions of the absolute position with respect to the reference position, (X3-X1) indicating the latitude value and (X4-X2) indicating the longitude value are “0 (zero)”. .

The vehicle control unit 34 extracts only the fractional value and the second value excluding the latitude and longitude degrees from the relative position of the absolute position with respect to the reference position as the relative position (step S.5).
In the above example, as shown in FIG.
Latitude: ((Y3-Y1) minutes, (Z3-Z1) seconds),
Longitude: ((Y4-Y2) minutes, (Z4-Z2) seconds) corresponds to the relative position.

  The vehicle control unit 34 uses the relative position information indicating the relative position extracted in this way and the area ID extracted from the recording unit 32 as transmission information (step S.6), and uses this transmission information as the vehicle communication unit. It transmits to the bus management center 2 via 33 (step S.7).

  On the other hand, as described above, the area ID specifies an area divided in consideration of the bus operation route. Therefore, when the bus is traveling on the operation route, the area ID is recorded from the recording unit 32. And the reference position can be searched. However, unlike a train or the like, a bus can travel on a place other than an operation route, so there is a possibility that the bus may travel outside an assumed area outside the operation route. In such a case, the vehicle control unit 34 cannot obtain the corresponding area ID from the recording unit 32 based on the acquired absolute position information, and cannot obtain the area ID. The relative position cannot be obtained based on the position.

  When the area ID cannot be obtained based on the absolute position detected by the GPS detection unit 31, it is also possible to set a specific reference position and obtain the relative position of the absolute position with respect to the reference position. However, the latitude and longitude frequency values of the relative position may not be the same as the latitude and longitude frequency values of the reference position. For this reason, even if the vehicle control unit 34 transmits the relative position obtained based on the specific reference position to the bus management center 2, the bus management center 2 may not be able to identify the position of the bus.

  Therefore, when the vehicle control unit 34 cannot retrieve the area ID and the reference position from the recording unit 32 (in the case of No in step S.2), the vehicle control unit 34 is detected by the GPS detection unit 31. The absolute position information indicating the absolute position is used as transmission information (step S.8), and is transmitted to the bus management center 2 via the vehicle communication unit 33 (step S.7).

  As described above, when the vehicle control unit 34 cannot obtain the area ID from the recording unit 32 based on the absolute position of the bus, or when it cannot obtain the appropriate relative position, as shown in FIG. The absolute position (latitude: (X1 degree, Y1 minute, Z1 second), longitude: (X2 degree, Y2 minute, Z2 second)) received from the GPS detection unit 31 via the vehicle communication unit 33 is stored in the bus management center 2. Send to.

  FIG. 4 shows transmission information that the vehicle control unit 34 transmits to the bus management center 2 via the vehicle communication unit 33. FIG. 4A shows the content of transmission information including the bus ID and the relative position, and FIG. 4B shows the content of transmission information including the absolute position.

  In the transmission information, not only the area ID, relative position, and absolute position described above, but also a positioning code indicating whether or not positioning by GPS has been performed correctly, time information when the GPS signal is received, and identification of the bus The bus ID is included.

  As shown in FIG. 4A, the transmission information including the bus ID and the relative position has a total data amount of 6 bytes, and the first byte (01) is an area ID and bus ID that also serves as a positioning code, and 2 bytes. The relative numerical value of the relative position in the second position (02), the second numerical value information in the relative position of the latitude in the third byte (03), the fourth numerical value information in the relative position of the longitude in the fourth byte (04) ( 05), the second numerical value information of the longitude of the relative position is recorded, and the time information is recorded in the last 6 bytes.

  On the other hand, as shown in FIG. 4B, the transmission information including the absolute position has a total data amount of 8 bytes, the positioning code and bus ID in the first byte (01), and the absolute data in the second byte (02). Latitudinal degree numerical value information, third byte (03), absolute position latitude fractional value information, fourth byte (04), absolute position latitude second value information, fifth byte (05), absolute position Longitude information of longitude, minute value information of longitude of absolute position in the sixth byte (06), second numerical value information of longitude of absolute position in the seventh byte (04), and time information in the last eight bytes .

  As is clear from comparison between FIG. 4A and FIG. 4B, the area ID and the relative position are compared with the case of transmitting transmission information (FIG. 4B) including the absolute position as position information. It is possible to reduce the information amount of the transmission information by transmitting the transmission information (FIG. 4A) including the position information. As described above, by using the area ID and the relative position as the position information, the data amount (packet amount) of the transmission information can be reduced, so that the data communication fee can be reduced.

  In addition, even when the bus deviates from the operation route and travels in a travel area that cannot be specified by the area ID, position information based on the absolute position detected by the GPS detection unit 31 is sent to the bus management center 2. As a result, the bus management center 2 can accurately grasp the traveling position of the bus.

  Next, the bus management center 2 will be described.

  The bus management center 2 is based on the management communication unit 21 that communicates with the in-vehicle device 3 and the like, the management recording unit 22 that records the area ID, the bus schedule, etc., and the position information received from the in-vehicle device 3. And a management control unit 23 for determining the bus delay based on the determined vehicle position.

  The management communication unit 21 receives transmission information (transmission information shown in FIGS. 4 (a) and 4 (b)) from the vehicle communication unit 33 of the in-vehicle device 3, and determines the bus delay information determined by the management control unit 23 for each bus stop. 50. Similar to the vehicle communication unit 33, the management communication unit 21 communicates information using a wireless communication technology such as a mobile phone, PHS, and wireless LAN.

  The management recording unit 32 is configured by a recording medium such as a hard disk or a memory, and an area ID recorded in the recording unit 32 and a reference position corresponding to the area ID are recorded. The management control unit 23 can determine the area where the bus exists based on the area ID recorded in the management recording unit 32.

  Moreover, the schedule information (operation schedule data) for each bus is recorded in the management recording unit 32, and the management control unit 23 uses which timetable passes which bus stop at which time. It is possible to determine whether it is scheduled.

  The management control unit 23 is a processing unit configured by a CPU, a memory, and the like (not shown), and has a role of determining a bus operating state based on bus position information. FIG. 5 shows a bus operation state determination process in the management control unit 23.

  The management control unit 23 first receives the transmission information transmitted from the vehicle communication unit 33 of the in-vehicle device 3 via the management communication unit 21 (step S.11). Next, the management control unit 23 determines whether or not an area ID is included in the received transmission information (step S.12).

  When the transmission information includes an area ID (Yes in step S.12), the management control unit 23 obtains a reference position from the management recording unit 22 based on the area ID as shown in FIG. Step S.13). And the management control part 23 calculates | requires the absolute position of a bus | bath by adding the relative position contained in transmission information with respect to the calculated | required reference | standard position (step S.14).

  On the other hand, when the area information is not included in the transmission information (No in step S.12), the management control unit 23 obtains the absolute position of the bus by extracting the absolute position included in the transmission information. (Step S.15).

  Furthermore, the management control unit 23 extracts the bus ID and time information from the transmission information (step S.16). The management control unit 23 mounts the in-vehicle device 3 from the management recording unit 22 based on the bus ID. Bus schedule information is obtained (step S.17), and based on the absolute position of the bus and time information, it is determined how much the bus is delayed with respect to the diamond information and the delay information is obtained (step S). .18).

  Specifically, the management control unit 23 specifies a position on the bus operation route from the absolute position of the bus, and calculates a scheduled time to arrive at the next bus stop based on the time information. And the management control part 23 calculates | requires the delay time of a bus | bath by calculating | requiring the time difference of the calculated arrival time and the bus stop arrival time prescribed | regulated by the diagram information.

  The management control unit 23 transmits the bus delay information to each bus stop 50 via the management communication unit 21 (step S19), and displays the bus delay time on the display device 4 installed in the bus stop 50. In addition, the delay information of the bus that can be searched via the Internet or the like is updated so that the passenger can check the delay time of the bus in real time on a portable terminal or the like.

  As described above, the bus operation management system 1 does not transmit the absolute position information of the bus as transmission information as it is, but transmits the position information composed of the area ID and the relative position information to the bus management center 2 as transmission information. Therefore, the data amount of transmission information can be reduced, and the data communication fee can be reduced.

  When the bus departs from the operation route and travels in a travel area that cannot be specified by the area ID, the vehicle control unit 34 obtains position information based on the absolute position detected by the GPS detection unit 31 from the bus management center 2. Therefore, the bus management center 2 can accurately grasp the traveling position of the bus.

  As described above, the bus position management system according to the present invention has been described using the bus operation management system 1, but the bus position management system according to the present invention is not limited to the above-described embodiment. It will be apparent to those skilled in the art that various changes and modifications can be made within the scope of the claims, and these are naturally within the technical scope of the present invention. Understood.

  In the present embodiment, the bus operating range is divided into a plurality of areas in consideration of the bus operating route, and the area ID for specifying the area and the reference position for each area are set. The area may be divided for each latitude and longitude frequency value, and an area ID may be set to identify the latitude frequency value and longitude frequency value of the area.

  By setting the area ID in this way, as shown in FIG. 6, the area ID and the lower absolute position indicating the fractional value of the latitude / longitude detected by the GPS detection unit and the second numerical value are included as position information. Transmission information can be created. By setting the contents of the transmission information in this way, the data amount (packet amount) is reduced as compared with the case where transmission information including absolute position information (FIG. 4B) is transmitted to the bus management center 2. Therefore, it is possible to reduce the data communication fee.

It is the block diagram which showed schematic structure of the bus operation management system which concerns on embodiment. It is the flowchart which showed the creation process of the positional information of the vehicle control part which concerns on embodiment. It is the figure which showed the creation process of the transmission information in the bus operation management system which concerns on embodiment. It is the figure which showed the content of the transmission information which the vehicle control part which concerns on embodiment transmits to a bus management center via a vehicle communication part. It is the flowchart which showed the bus operation state judgment process of the bus management center which concerns on embodiment. It is the figure which showed the content of the other transmission information which the vehicle control part which concerns on embodiment transmits to a bus management center via a vehicle communication part.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Bus operation management system 2 ... Bus management center 3 ... In-vehicle apparatus 4 ... Display apparatus 21 ... Management communication part 22 ... Management recording part 23 ... Management control part 31 ... GPS detection part 31a ... GPS antenna 31b ... Detection main-body part 32 ... Recording unit 33 ... vehicle communication unit 34 ... vehicle control unit 50 ... bus stop

Claims (8)

A bus position management system comprising: a vehicle position detection device mounted on a bus; and a bus management device that receives position information of the bus from the vehicle position detection device and manages the position of the bus,
The vehicle position detection device includes:
Position detecting means for detecting the absolute position of the bus;
Vehicle area information recording means for recording an area ID for identifying the travel area of the bus and a reference position predetermined for each area ID;
Area ID determining means for obtaining the traveling area based on the absolute position detected by the position detecting means and obtaining an area ID corresponding to the traveling area from the vehicle area information recording means;
The basic position of the area ID obtained by the area ID determining means is obtained from the vehicle area information recording means, and the relative position of the bus with respect to the obtained reference position is determined as the absolute position and the reference position. Relative position calculating means for calculating based on
Transmitting means for transmitting the area ID determined by the area ID determining means and the relative position calculated by the relative position calculating means to the bus management device;
The bus management device
Receiving means for receiving the area ID and the relative position transmitted by the transmitting means;
Management area information recording means for recording the area ID and the reference position;
A reference position determining means for obtaining a reference position of the area ID received by the receiving means from the management area information recording means;
Absolute position calculating means for calculating an absolute position of the bus based on the reference position obtained by the reference position determining means and the relative position received by the receiving means;
Management control means for managing the position of the bus based on the calculated absolute position. The transmitting means transmits the absolute position detected by the position detecting means to the bus management device when the corresponding area ID cannot be obtained in the area ID determining means,
2. The bus position management according to claim 1, wherein, when the reception control unit receives the absolute position of the bus, the management control unit performs position management of the bus based on the received absolute position. system. A bus position management system comprising: a vehicle position detection device mounted on a bus; and a bus management device that receives position information of the bus from the vehicle position detection device and manages the position of the bus,
The vehicle position detection device includes:
Position detecting means for detecting an absolute position comprising the longitude and latitude of the bus;
Vehicle area information recording means for recording an area ID of the traveling area of the bus classified based on the longitude and latitude values;
Area ID determining means for obtaining the traveling area based on the absolute position detected by the position detecting means and obtaining an area ID corresponding to the area from the vehicle area information recording means;
Lower position extraction means for extracting the fractional value and the second value of the absolute position detected by the position detection means as a lower absolute position;
Transmitting means for transmitting the area ID obtained by the area ID determining means and the lower absolute position extracted by the lower position extracting means to the bus management device;
The bus management device
Receiving means for receiving the area ID and the lower absolute position transmitted by the transmitting means;
Management area information recording means for recording the area ID and the latitude and longitude frequency values corresponding to the area ID;
Degree value determination means for obtaining latitude and longitude frequency values corresponding to the area ID received by the reception means from the management area information recording means;
Absolute position calculating means for calculating the absolute position of the bus based on the fractional value and the second value of the lower absolute position received by the receiving means, and the power value obtained by the power value determining means;
Management control means for managing the position of the bus based on the calculated absolute position. The transmitting means transmits the absolute position detected by the position detecting means to the bus management device when the corresponding area ID cannot be obtained in the area ID determining means,
4. The bus position management according to claim 3, wherein, when the reception control unit receives the absolute position of the bus, the management control unit performs position management of the bus based on the received absolute position. 5. system. A position information transmission / reception method of a bus position management system that performs position management of the bus by a bus management apparatus based on position information transmitted from a vehicle position detection apparatus mounted on a bus,
The vehicle position detecting device is
A position detection step for detecting the absolute position of the bus;
A vehicle that records an area ID of the traveling area corresponding to the absolute position detected in the position detecting step, an area ID for identifying the traveling area of the bus, and a reference position predetermined for each area ID. Area ID determination step to be obtained from the area information recording means;
A basic position determining step for determining the basic position of the area ID determined by the area ID determining step from the vehicle area information recording means;
A relative position calculating step of calculating a relative position of the bus based on the absolute position and the reference position, with the reference position determined in the basic position determining step as a reference;
Transmitting the area ID obtained in the area ID determination step and the relative position calculated in the relative position calculation step to the bus management device;
The bus management device is
A receiving step of receiving the area ID and the relative position transmitted in the transmitting step;
A reference position determining step for obtaining a reference position corresponding to the area ID acquired by the receiving step from a management area information recording unit in which the area ID and the reference position are recorded;
An absolute position calculating step for calculating an absolute position of the bus based on the reference position obtained by the reference position determining step and the relative position acquired by the receiving step;
And a management control step of managing the location of the bus based on the absolute location calculated in the absolute location calculation step. A location information transmission / reception method for a bus location management system. In the transmitting step, when the corresponding area ID cannot be obtained in the area ID determining step, the absolute position is transmitted to the bus management device,
6. The bus position management system according to claim 5, wherein, in the management control step, when the absolute position of the bus is received in the reception step, the bus position is managed based on the received absolute position. Location information transmission / reception method. A position information transmission / reception method of a bus position management system that performs position management of the bus by a bus management apparatus based on position information transmitted from a vehicle position detection apparatus mounted on a bus,
The vehicle position detecting device is
A position detection step for detecting an absolute position composed of longitude and latitude of the bus;
The area ID of the traveling area of the bus divided based on the absolute position frequency value detected by the position detecting step is recorded, and the area ID predetermined based on the longitude and latitude frequency values is recorded. An area ID determining step to be obtained from the vehicle area information recording means;
A lower position extracting step for extracting the fractional value and second value of the absolute position detected by the position detecting step as a lower absolute position;
Transmitting the area ID obtained in the area ID determination step and the lower absolute position extracted in the lower position extraction step to the bus management device;
The bus management device is
A receiving step of receiving the area ID and the lower absolute position transmitted in the transmitting step;
Degree value determination step for obtaining the degree value corresponding to the area ID received in the reception step from the management area information recording means in which the area ID and the latitude and longitude degree values corresponding to the area ID are recorded. When,
An absolute position calculating step for calculating the absolute position of the bus based on the fractional value and the second numerical value of the lower absolute position received by the receiving step and the frequency value obtained by the frequency value determining step;
And a management control step of managing the location of the bus based on the absolute location calculated in the absolute location calculation step. A location information transmission / reception method for a bus location management system. In the transmission step, when the corresponding area ID cannot be obtained in the area ID determination step, the absolute position is transmitted to the bus management device,
The position information of the bus position management system according to claim 7, wherein, in the management control step, when the absolute position of the bus is received in the reception step, the position management of the bus is performed based on the received absolute position. Transmission / reception method.

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