KR20200072752A - Bus GPS error correcting device and method using beacon - Google Patents

Abstract

The present invention relates to a bus GPS error correcting device using a beacon and a method thereof which are able to correct a position error generated by an inflow of an external noise into a bus terminal GPS or an error generated as the intensity of the GPS signal becomes weaker while a bus is operating. The bus GPS error correcting device using the beacon comprises: a GPS correction information provision unit which is installed at a bus stop to perform Bluetooth low energy (BLE) communication with a bus terminal, check the bus stop ID transmitted from the accessed bus terminal, check the bus to be stopped, and transmit the GPS correction data only about the bus to be stopped at the bus terminal; and the bus terminal which is able to, when connected to the GPS correction information provision unit by the BLE communication, transmit the bus stop ID, and correct the GPS data by using the GPS correction data transmitted from the GPS correction information provision unit.

Description

Bus GPS error correcting device and method using beacon

The present invention relates to an apparatus and method for correcting a bus GPS error using a beacon, and in particular, corrects an error that occurs due to a weak location signal and a weak GPS signal strength due to an external noise inflow into a bus terminal GPS during bus operation. Bus GPS error correction device and method using a beacon to enable.

Existing methods for guiding a bus stop include a manual guide method, a method using a sensor, and a method using GPS and DGPS.

The manual guide method is a method in which the name of each stop is stored as voice information in advance, and then a guide is broadcasted by a driver pressing a button before arriving at each stop. This way, if the driver passes the stop without pressing the button, the wrong stop is broadcast at the next stop. In order to prevent such an error, the driver must always pay attention to the stop guidance, which has a problem of impeding safe driving.

In order to improve these disadvantages, there are a method of using a sensor and a method of using GPS and DGPS to automatically broadcast a stop.

The method of using the sensor is to install the sensor at each point about 100m-150m ahead of each stop. When the bus on which the sensor (target) is installed passes the point where the sensor is installed, it detects the emitted signal and conducts an announcement for the corresponding stop. This method is expensive because sensors must be installed at all stops.

The method of using GPS and DGPS is to store the location information of each stop and the point where the announcement should be made in the DB, receive GPS and DGPS signals to check the location of the bus, and automatically arrive at the stop whenever passing the point. Conducts announcements.

Therefore, in recent years, a method of guiding a bus arrival stop using a GPS and a DGPS is mainly used. Conventional techniques for guiding a bus arrival stop using GPS and DGPS are described in the following <Patent Documents 1> to <Patent Documents 2>. It is disclosed in.

The prior art disclosed in <Patent Document 1> receives a GPS signal, calculates a DGPS signal, and transmits the DGPS signal to a bus stop guidance device, a traffic information transmitting station, receiving a GPS signal from a GPS satellite, and receiving a DGPS signal from a traffic information transmitting station By calculating the exact current location of the bus, the bus stop guide device that broadcasts the information of the next arrival stop, and the current location information of the bus received from the bus stop guide device and the collected traffic information, is used to determine the estimated time of arrival of the next stop of the bus. Calculate the estimated time of arrival of the bus by receiving the current location and traffic information of the buses operating from the traffic information control center and control center, which are calculated and provided through the Internet, ARS, PCS text service, etc., and then wait for the bus. It includes a bus arrival guidance device that outputs for viewing by passengers. Through this configuration, the current location of the bus in operation can be calculated within an error range of 10 m to accurately inform the passenger of the next arrival stop, and accurately provide the expected time of arrival of the bus to the passenger waiting for the bus.

In addition, the prior art disclosed in <Patent Document 2> has a wireless communication unit for wirelessly communicating with a beacon that provides a unique identification number to read the identification number and transmit bus location information including the identification number and bus number through a wireless communication network. It is equipped with a control center server that manages the operation of the bus by updating and analyzing the location information of the buses based on the location information of the bus transmitted from the bus terminal, the wireless communication network, and adjusting the prediction and distribution interval time of the bus. With this configuration, the bus and the control center server communicate directly with the wireless communication network, so that the bus driver can receive various bus operation information from the control center server, and the bus user accesses the control center server through the wireless communication network to obtain accurate bus location information. You can request and receive it, and bus operators can facilitate bus operation management.

Republic of Korea Patent Publication No. 2001-0068971 (published on July 23, 2001) (bus stop information broadcasting device and bus arrival time information device) Republic of Korea Patent Publication 10-2004-0073754 (published on August 21, 2004) (bus location information system)

However, the prior art as described above is to perform guidance to the bus arrival stop under the assumption that the GPS or DGPS is operating correctly. If a GPS error occurs, a location error occurs to perform an incorrect broadcast to the bus arrival stop. There were disadvantages.

Here, if the noise of other devices flows into the GPS installed in the bus terminal during the bus operation, the position error and the strength of the GPS signal level weaken, making it impossible to check the exact location information.

Here, if a location error occurs, an error in the bus fare is generated, which results in customer complaints such as a refund of the cost, and also an error in the arrival time of the bus by passengers waiting at the bus stop or the inability to accurately check the arrival time of the bus. Causes

Therefore, the present invention has been proposed to solve various problems occurring in the prior art as described above, and it is possible to correct an error that occurs due to a weak position signal and a weak GPS signal strength due to the inflow of external noise to the bus terminal GPS during bus operation. The aim is to provide a bus GPS error correction device and method using a beacon.

Another object of the present invention is to communicate between the bus terminal and the bus stop beacon via BLE (Bluetooth Low Energy), and correct the GPS position error using the latitude and longitude data obtained through the beacon of the bus stop in the bus terminal. It is to provide a bus GPS error correction device and method using a beacon to enable.

In order to achieve the above object, a bus GPS error correction device using a beacon according to the present invention is installed in a bus stop, communicates with the bus terminal and Bluetooth Low Energy (BLE), and the bus transmitted from the connected bus terminal A GPS correction information providing unit that checks the bus stop ID to check the bus to be rectified and transmits GPS correction data to the bus terminal only for the bus to be rectified; And a bus terminal that transmits a bus stop ID when connected to the GPS correction information providing unit through BLE communication and corrects GPS data with GPS correction data transmitted from the GPS correction information providing unit.

In the above, the GPS correction data is characterized by latitude/longitude data of the current location.

In the above, the GPS correction information providing unit stores a latitude/longitude information of a current location and a bus stop ID; The bus terminal performs BLE communication with the bus terminal, and compares the bus stop ID received from the bus terminal with the bus stop ID stored in the storage unit to match the latitude/longitude information of the current location stored in the storage unit. Characterized in that it comprises a beacon to transmit to.

In the bus terminal, the GPS antenna receives a GPS signal through a GPS satellite; A BLE module that transmits a bus stop ID through BLE communication with a beacon installed at the stop, and receives GPS correction data; It characterized in that it comprises a bus information processing unit for acquiring location information with a GPS signal obtained through the GPS antenna, and correcting the obtained GPS location information with GPS correction data obtained through the BLE module.

The bus information processing unit is characterized in that when the GPS location information is corrected with the GPS correction data obtained through the BLE module, the modified location information is transmitted to the bus control center.

In order to achieve the above object, the bus GPS error correction method using a beacon according to the present invention, (a) when the bus terminal is connected to the beacon installed in the bus stop by BLE communication, the bus stop ID information to arrive Transmitting to a beacon; (b) checking the bus stop ID received from the beacon and if it matches the stored bus stop ID, transmitting GPS correction data to the bus terminal; (c) comparing the GPS correction data received from the bus terminal with the GPS location information obtained through a GPS antenna and reflecting the GPS location information of the bus terminal to the bus stop location; (d) comparing the GPS correction data received from the bus terminal with GPS location information obtained through a GPS antenna, and correcting the GPS data with the received GPS correction data.

In the above, the GPS correction data is characterized by latitude/longitude data of the current location.

In addition, the method for correcting a bus GPS error using a beacon according to the present invention includes: (e) when correcting GPS location information with GPS correction data received from the bus terminal, transmitting the corrected location information to the bus control center; (f) correcting the bus stop location using the GPS information corrected by the bus terminal, and further comprising providing the corrected location information to the bus in/out terminal and bus stop display display.

According to the present invention, it is possible to prevent a position error caused by a location error and a weak GPS signal strength due to external noise input to the bus terminal GPS during bus operation.

In particular, according to the present invention, the communication between the bus terminal and the bus stop beacon via BLE (Bluetooth Low Energy), and the bus terminal accurately corrects the GPS position error using the latitude and longitude data obtained through the beacon of the bus stop. Therefore, there is an advantage that can accurately guide the stop to the arrival stop.

1 is a block diagram of a bus GPS error correction device using a beacon according to the present invention,
Figure 2 is an exemplary GPS error correction process for explaining the bus GPS error correction process using a beacon according to the present invention,
3 is a flowchart showing a bus GPS error correction method using a beacon according to the present invention.

Hereinafter, a bus GPS error correction apparatus and method using a beacon according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram of a bus GPS error correction device using a beacon according to a preferred embodiment of the present invention, a bus terminal 10 mounted on a bus 1, a GPS correction information providing unit 20 installed at a stop ).

The GPS correction information providing unit 20 is installed at the bus stop 2 to communicate with the bus terminal 10 and Bluetooth Low Energy (BLE), and check the bus stop ID transmitted from the connected bus terminal 10. The bus to be rectified is checked, and only the bus to be rectified serves to transmit GPS correction data to the bus terminal 10.

The GPS correction information providing unit 20 performs BLE communication with the storage unit 22 storing the latitude/longitude information of the current location and the bus stop ID, and the bus terminal 10, and receives from the bus terminal 10 A beacon that transmits the latitude/longitude information of the current location stored in the storage unit 22 to the bus terminal 10 only when the bus stop ID stored in the storage unit 22 is matched by comparing it. (21).

In addition, when the bus terminal 10 is connected to the GPS correction information providing unit 20 by BLE communication, a bus stop ID is transmitted, and GPS data is used as GPS correction data transmitted from the GPS correction information providing unit 20. It serves to correct.

The bus terminal 10 is mounted on an ordinary bus, records bus operation information, receives bus operation information through communication with a bus control center, and charges fare in conjunction with a bus terminal. It means a general bus terminal that controls stop announcements.

The bus terminal 10 transmits a bus stop ID through BLE communication with a beacon 21 installed at the stop 2 and a GPS antenna 11 that receives a GPS signal through a GPS satellite, and receives GPS correction data The BLE module 13, a bus for obtaining location information with a GPS signal obtained through the GPS antenna 11, and correcting the acquired GPS location information with GPS correction data obtained through the BLE module 13 And an information processing unit 12.

When the GPS information is corrected by the GPS information obtained through the BLE module 13, the bus information processing unit 12 preferably transmits the corrected location information to the bus control center.

The operation of the bus GPS error correction device using the beacon according to the present invention configured as described above will be described in detail as follows.

First, when the bus 1 enters a bus stop BLE signal area in the beacon 21 of the GPS correction information providing unit 20 installed in the bus stop 2 while the bus 1 is in operation, the bus terminal (10) The BLE module 13 and the beacon 20 are connected through BLE communication.

When the connection is made through BLE communication, the bus stop ID is transmitted from the BLE module 13 to the beacon 21 under the control of the bus information processing unit 12 of the bus terminal 10.

When the beacon 21 receives the bus stop ID transmitted from the BLE module 13 of the bus terminal 10, it compares the bus stop ID stored in the storage unit 22 with the received bus stop ID and does not match. Otherwise, the bus is recognized as a bus that does not rectify, and communication is terminated.

Alternatively, if the bus stop ID stored in the storage 22 is compared with the received bus stop ID, it is determined as a bus to be rectified, and the GPS correction data stored in the storage 22 is transferred to the bus terminal 10. send. Thereafter, when a response is received that the GPS correction data has been received from the bus terminal 10, communication is terminated.

Here, the GPS correction data includes latitude/longitude information of the current location.

The BLE module 13 of the bus terminal 10 receiving the GPS correction data transmitted from the GPS correction information providing unit 20 transmits the received GPS correction data to the bus information processing unit 12.

The bus information processing unit 12 compares the GPS signal obtained through the GPS antenna 11 and the GPS correction data received through the BLE module 13, and if the GPS information is the same, the GPS antenna 11 is used. It is reflected in the location of the bus stop using the GPS information obtained through. Reflecting the GPS signal at the bus stop location means that the GPS information is provided to the bus in/out terminal and the bus stop display display. In this case, the bus stop arrival broadcast broadcasts the arrival stop guide based on the location information obtained through the GPS antenna 11.

On the other hand, if the GPS correction data received from the GPS correction information providing unit 20 and the GPS location information obtained through the GPS antenna 11 are inconsistent, the GPS data obtained with the received GPS correction data is corrected. . Here, when the GPS location information is corrected with the received GPS correction data, the corrected location information is transmitted to the bus control center so that bus arrival information and the like can be accurately displayed at the bus stop.

In addition, when the bus stop processing unit 12 corrects the bus stop location using the corrected GPS information, the bus information processing unit 12 provides the corrected location information to the bus in/out terminal and the bus stop display display. As a result, since the internal boarding/unloading terminal can know the exact location information, it is possible to prevent a charging error due to the location error as in the past. In addition, since accurate location information can be obtained, it is possible to promote accuracy in a bus stop bus announcement.

3 is a flow chart showing a bus GPS error correction method using a beacon according to the present invention, (a) when the bus terminal 10 is connected to the beacon 21 installed in the bus stop 2 and BLE communication, the bus to arrive Step of transmitting the stop ID information to the beacon (21) (S101-S103), (b) check the bus stop ID received from the beacon 21, and if it matches the stored bus stop ID, the bus terminal 10 The step of transmitting the GPS correction data to (S104-S105), (c) the GPS correction data received from the bus terminal 10 and the GPS location information obtained through the GPS antenna to compare and match the bus terminal 10 Step of reflecting to the location of the bus stop using the GPS information (S106-S107), (d) Inconsistency by comparing the GPS correction data received from the bus terminal 10 and the GPS location information obtained through the GPS antenna 11 If so, the step of correcting the GPS data with the received GPS correction data (S108).

In addition, the bus GPS error correction method using a beacon according to the present invention, (e) when correcting the GPS location information with the GPS correction data received from the bus terminal 10, transmits the corrected location information to the bus control center Step (S109), (f) correcting the location of the bus stop using the GPS information corrected by the bus terminal 10, and providing the corrected location information to the bus in/out terminal and bus stop display display (S110), (g) BUS between the bus terminal 10 and the GPS correction information providing unit 20 when receiving the GPS correction data from the GPS terminal 100 and receiving the GPS correction data from the GPS correction information providing unit 20 Further comprising the step of ending the communication (S111).

The bus GPS error correction method using the beacon according to the present invention configured as described above will be described in detail as follows.

First, in step S101, the bus 1 uses the GPS information obtained through the GPS antenna 11 to perform bus stop stop announcement and bus/bus terminal handling operations, such as bus stop as in step S102. (2) When entering a beacon 21 and a BLE communication area (BUS Stop BLE Signal Area) of the GPS correction information providing unit 20 installed in the BLE module 13 and the beacon 20 of the bus terminal 10 ) Through BLE communication.

When the connection is made through BLE communication, the bus stop ID is transmitted from the BLE module 13 to the beacon 21 under the control of the bus information processing unit 12 of the bus terminal 10 in step S103.

When receiving the bus stop ID transmitted from the BLE module 13 of the bus terminal 10 in step S104, the beacon 21 compares the received bus stop ID with the bus stop ID stored in the storage 22. If not, the corresponding bus is recognized as a non-commutating bus and communication is terminated.

Alternatively, if the bus stop ID stored in the storage unit 22 is compared with the received bus stop ID, it is determined as a bus to be rectified, and in step S105 the GPS correction data stored in the storage unit 22 is transferred to the bus terminal ( 10). Thereafter, when a response indicating that GPS correction data has been received from the bus terminal 10 is received, communication is terminated (S111). Here, the GPS correction data includes latitude/longitude information of the current location.

The BLE module 13 of the bus terminal 10 receiving the GPS correction data transmitted from the GPS correction information providing unit 20 transmits the received GPS correction data to the bus information processing unit 12.

The bus information processing unit 12 compares the GPS signal obtained through the GPS antenna 11 with the GPS correction data received through the BLE module 13 in step S106, and if the GPS information is the same, the process proceeds to step S107. It moves to reflect the location of the bus stop using the GPS information obtained through the GPS antenna 11. Reflecting the GPS signal at the bus stop location means that the GPS information is provided to the bus in/out terminal and the bus stop display display. In this case, the bus stop arrival broadcast broadcasts the arrival stop guide based on the location information obtained through the GPS antenna 11.

On the other hand, if the GPS correction data received from the GPS correction information providing unit 20 and the GPS location information obtained through the GPS antenna 11 are inconsistent, go to step S108 to obtain the received GPS correction data Correct the GPS data. Here, if the GPS location information is corrected with the received GPS correction data, the process moves to step S109 to transmit the corrected location information to the bus control center so that bus arrival information and the like can be accurately displayed at the bus stop.

In addition, if the bus information processing unit 12 corrects the bus stop location using the GPS information corrected in step S111, the corrected location information is provided to the bus in/out terminal and the bus stop display display. As a result, since the internal boarding/unloading terminal can know the exact location information, it is possible to prevent a charging error due to the location error as in the past. In addition, since accurate location information can be obtained, it is possible to promote accuracy in a bus stop bus announcement.

The invention made by the present inventors has been described in detail according to the above-described embodiments, but the present invention is not limited to the above-described embodiments and can be changed in various ways without departing from the gist thereof. It is obvious to those who have it.

The present invention is applied to a technology for correcting a GPS error in a bus terminal that charges and arrives at a bus stop using GPS.

1: Bus
2: bus stop
10: bus terminal
11: GPS antenna
12: Bus information processing unit
13: BLE module
20: GPS correction information provider
21: Beacon
22: storage

Claims (8)

As a device for correcting the GPS error of the bus terminal using a beacon installed at the bus stop,
BLE (Bluetooth Low Energy) communication with the bus terminal installed at the bus stop, the bus stop ID transmitted from the connected bus terminal is checked to check the bus to be rectified, and GPS correction data to the bus terminal is limited to the bus. A GPS correction information providing unit for transmission; And
A bus using a beacon comprising a bus terminal that transmits a bus stop ID when connected to BLE communication with the GPS correction information provider and corrects GPS data with GPS correction data transmitted from the GPS correction information provider. GPS error correction device.
The apparatus of claim 1, wherein the GPS correction data is latitude/longitude data of a current location.
The method according to claim 1, The GPS correction information providing unit is a storage unit that stores the latitude/longitude information of the current location and the bus stop ID; The bus terminal performs BLE communication with the bus terminal, and compares the bus stop ID received from the bus terminal with the bus stop ID stored in the storage unit to match the latitude/longitude information of the current location stored in the storage unit. Bus GPS error correction device using a beacon, characterized in that it comprises a beacon to transmit to.
In claim 1, The bus terminal is a GPS antenna for receiving a GPS signal via a GPS satellite; A BLE module that transmits a bus stop ID through BLE communication with a beacon installed at the stop, and receives GPS correction data; A bus using a beacon comprising a bus information processor for obtaining location information with a GPS signal obtained through the GPS antenna, and correcting the acquired GPS location information with GPS correction data acquired through the BLE module. GPS error correction device.
In claim 4, When the bus information processing unit corrects the GPS location information with the GPS correction data obtained through the BLE module, the bus GPS error correction using a beacon, characterized in that for transmitting the corrected location information to the bus control center. Device.
As a method of correcting the GPS error of the bus terminal using a beacon installed at the bus stop,
(a) when a beacon installed at a bus stop is connected to a beacon by a BLE communication at a bus terminal, transmitting ID information of the bus stop to be sent to the beacon;
(b) checking the bus stop ID received from the beacon and if it matches the stored bus stop ID, transmitting GPS correction data to the bus terminal;
(c) comparing the GPS correction data received from the bus terminal with the GPS location information obtained through a GPS antenna and reflecting the GPS location information of the bus terminal to the bus stop location; And
(d) comparing the GPS correction data received from the bus terminal with GPS location information obtained through a GPS antenna, and correcting the GPS data with the received GPS correction data. Bus GPS error correction method used.
The method of claim 6, wherein the GPS correction data is latitude/longitude data of a current location.
The method according to claim 6, (e) when correcting GPS location information with GPS correction data received from the bus terminal, transmitting the corrected location information to the bus control center; (f) correcting the bus stop location using the GPS information corrected by the bus terminal, and further comprising providing the corrected location information to the bus in/out terminal and the bus stop display display. Bus GPS error correction method.

Images