KR100722933B1 - Mobile Data Terminal For Monitoring A Vehicle And Method For Transmitting A Data Using It - Google Patents

Abstract

The present invention is not only easy to attach to the single-side band and ultra-short band transceiver provided in the mobile body using the Mobil Data Terminal (VMS) and AVLS, but also has a low cost terminal, and automatically ID, current time and location information of the mobile body. It is an object of the present invention to provide a mobile data terminal for controlling a moving object and a data transmission method using the same. To this end, the present invention stores the ID information input through the input unit, and determines whether the start point of the position and time information is input from the GPS data received through the GPS receiver, and if the start point is input, the end point is input. A first step of continuously receiving the position and time information until the end point is input, and storing the extracted position and time information; A second step of, when a transmission request for the position and time information is input from the input unit by a PTT operation, setting a transmission speed and transmitting the stored ID information to a management station system through an external transceiver; A third step of transmitting the stored location and time information to the management station system through the transceiver after transmitting the ID information; And a fourth step of outputting text or voice data transmitted from the management station system and received from the transceiver.

Mobile Vehicle, GPS, Single Side Band (SSB), Ultra Short Band (VHF)

Description

Mobile Data Terminal For Monitoring A Vehicle And Method For Transmitting A Data Using It}

1 is a configuration diagram of an embodiment of a mobile control system to which the present invention is applied.

Figure 2 is an embodiment of the internal configuration of a mobile data terminal for controlling the mobile according to the present invention.

Figure 3 is an internal circuit diagram of an embodiment of a mobile data terminal for mobile control according to the present invention.

4A is a flowchart illustrating a process of collecting and storing location and visual information in a data transmission method using a mobile data terminal for controlling a mobile device according to the present invention;

4B is a flowchart illustrating a process of collecting and transmitting position and time information in a data transmission method using a mobile data terminal for controlling a mobile device according to the present invention.

5 is an exemplary view of an output unit screen in a management station system of a mobile control system to which the present invention is applied;

Figure 6 is an exemplary view showing a communication sequence of a data transmission method using a mobile data terminal for mobile control according to the present invention.

The present invention relates to a mobile data terminal for transmitting position information of a moving object and a data transmission method using the same.

Vessel Monitoring System (VMS) (hereinafter referred to simply as "VMS") monitors the position of a ship in real time by a ship company or a government agency so that ships such as fishing vessels and merchant ships can operate safely from dangerous areas. It is a system to induce the emergency rescue signal in the event of an accident to the rescue headquarters of the land to minimize the damage, while identifying the cause of the accident, it is an essential system in the maritime transport field.

Recently, a satellite system has been used as the equipment for VMS. Currently, the most widely used system is a low orbit satellite system of Orbcomm in the United States. It acts as an inhibitor.

On the other hand, the above-described position tracking system is also required in land mobile vehicles, and such a system is called an automatic vehicle location system (AVLS) (hereinafter simply referred to as "AVLS"). A communication device capable of realizing AVLS is called a mobile data terminal (hereinafter referred to as "MDT").

That is, AVLS transmits the current position and vehicle-related information of the mobile vehicle received from the GPS satellites to the control center through the wireless network and displays it on the GIS (Geographical Information System) to control the position of each vehicle at the control center. It is an advanced vehicle location tracking system that checks driving information and issues various control orders.

The application field of the above system is used in call taxi control system, security vehicle control system, logistics vehicle control system, general / high speed bus control system, dangerous goods loading vehicle control system, and other integrated management.

The use of the mobile location tracking system can greatly improve the performance of the mobile workforce, as well as significantly improve the ability to cope with emergencies.

A typical example of operation is Call Taxi's TRS (Trunked Radio System) MDT, but the TRS MDT is charged according to the operating time, so it cannot be ignored for taxi companies that operate many vehicles. In place of TRS, MDT, which requires no communication charge, is urgently required by the carrier.

In other words, in order to use the VMS or AVLS as described above, communication equipment capable of realizing the systems on a ship or vehicle (hereinafter, simply referred to as a "mobile body") should be provided. As a result, there is a problem that the utility is lowered.

In order to solve the above problems, the present invention is not only easy to attach to the single sideband (SSB) and ultrashort band (VHF) transceiver provided in the mobile in using VMS and AVLS, but also a low-cost terminal, An object of the present invention is to provide a mobile data terminal for moving object control and a data transmission method using the same, capable of automatically transmitting ID, current time and position information of GPS.

According to an aspect of the present invention, there is provided a mobile data terminal for controlling an object, comprising: an input unit (17) for receiving an ID setting information and an interrupt signal by a PTT operation; A GPS receiver 11 for receiving the position and visual information of the moving object by the GPS receiver chip; While storing the ID setting information input through the input unit, and receiving and storing the position and time information received through the GPS receiver, and if the user's transmission request PTT operation through the input unit is recognized and stored as an interrupt A second control unit 15 for controlling the ID information, the position and the time information to be transmitted to the management station system 40 through an external transceiver 20; A communication unit 14 for transmitting the position and time information received through the GPS receiver to the second control unit through a communication chip; An interface (13) for modulating and transmitting the ID information, position and time information to the transceiver (20) under control of the second controller; Receiving and storing text or voice data transmitted from the management station system 40 through the transceiver 20 and the interface 13 through the communication unit, and controlling to output the received text or voice data. 1 control unit 16; And an output unit 12 for outputting the text or voice data under the control of the first control unit.

In addition, the present invention in the data transmission method using a mobile data terminal for mobile control applied to a mobile control system, while storing the ID information input through the input unit 14, GPS received through the GPS receiver 11 From the data, it is determined whether the starting point of the position and the time information is input. If the starting point is input, the position and the time information are continuously received until the ending point is input. A first step of storing the; When a transmission request for the position and time information is input from the input unit 17 by a PTT operation, the ID information stored by setting a transmission speed is transmitted to the management station system 40 through an external transceiver 20. Transmitting a second step; A third step of transmitting the stored location and time information to the management station system 40 through the transceiver 20 after transmitting the ID information; And a fourth step of outputting text or voice data transmitted from the management station system 40 and received from the transceiver 20.

In addition, the present invention provides a data transmission method using a mobile data terminal for mobile control, which is applied to a mobile control system, comprising: a first step of polling an ID of a mobile data terminal (10) mounted on a mobile (30); A second step of calling an ID of a mobile data terminal mounted on another mobile body in a predetermined order if there is no response to the ID call; A third step of receiving ID information from the mobile data terminal (10) receiving the call, and receiving position and time information of the moving object (30) on which the mobile data is mounted; And a fourth step of receiving position and time information of the plurality of moving objects by repeating the above process in a predetermined order with respect to the mobile data terminals mounted on the plurality of moving objects.

In order to establish a VMS that automatically inputs and manages the status and position of small vessels, especially fishing vessels, in real time, digitization first precedes high frequency (HF) single side band (SSB) communications used for communications between radio stations and ships. Should be. To remedy this problem, a plan to build a mobile DB (Data Base) for ships in real time should be prepared, and the necessary elements should be developed a data modem for digital communication and an automatic control communication protocol, a network technology. do.

The call taxi control system currently in use is an integrated management system that monitors sales information such as the location, status, and import status of call taxis registered in the control center using GPS, Geographic Information System (GIS), and wireless data communication network. Implement At this time, the biggest use of the call taxi control system can realize the shortest time allocation and accurate allocation by building an automatic distribution system for the vehicle closest to the customer when the customer requests.

In addition, the current MDT is in the form of exchanging voice and data using mobile communication and TRS, and in the case of transportation companies such as taxis and buses using such MDT, when a large number of mobiles provide data to a base station, Since the burden on the charge of mobile communication is very large, most mobile devices operate in the form of reception only.

On the other hand, the present invention is configured in a module form that can be easily mounted in common to the VHF and SSB transceiver, the module can acquire the current time and position information of the moving object. In addition, voice and data can be simultaneously transmitted and received, and the received data can be displayed in text on the LCD display. In addition, the present invention as described above can be configured in a compact, lightweight, low-cost form using a microprocessor for the purpose of commercialization.

That is, the present invention can be easily mounted on a single side band (SSB) and very high frequency (VHF) transceiver without burden of communication charges, so that GPS (Global Positioning System) data required in addition to voice communication is required. Mobile data terminal (GPS-MDT: GPS) that can operate Vessel Monitering System (VMS) to control ships and AVLS (Automatic Vehicle Location System) to control vehicles Mobile Data Terminal).

In other words, the present invention provides a modular and data transmission modem and GPS signal processor that can be attached to a terrestrial ultra high frequency (VHF) band and an SSB transceiver for a high frequency (HF) band in a mobile unit. The terminal transmits data on location, time and ID (Identification Data), and the management station system receives the transmitted data and acquires information on the movement of the moving object in real time, and implements a data transmission method using the same. .

In addition, the character data transmitted from the control station system is simultaneously received by all moving objects and displayed on a liquid crystal display (LCD) monitor.

At this time, the mobile data terminal (GPS-MDT) for controlling the moving object according to the present invention transmits the position information of the moving object as needed or periodically, and the control station acquires the transmitted information to grasp the position and the moving path of the moving object in real time. As a result, it is possible to quickly manage the matters regarding the safe operation of the mobile, as well as the transportation and logistics.

On the other hand, the overall operation of the transmission and reception control in the present invention is designed to be basically performed by the PTT (Press-To-Talk) transmission and reception control. It is composed of FSK (Frequency Shift Keying) modulator demodulator and transmits and receives. In addition, elements such as LCD display control unit, receiving and storing received data, and ID setting unit of moving object are added.

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

1 is a view showing a configuration of an embodiment of a mobile control system to which the present invention is applied, and as shown in the drawing, a mobile control system to which the present invention is applied is a mobile data terminal 10 for mobile control according to the present invention. (Hereinafter, simply referred to as a "mobile data terminal"), a transceiver 20 for transmitting and receiving voice, location information and text information connected to the mobile data terminal and a management station system 40 for communicating with the transceiver It is configured to include.

In this case, the mobile data terminal 10 and the transceiver 20 are mounted on a mobile body 30 such as a car or a ship to transmit location information of the mobile body 30 and voice information of the user to the management station system 40. And receiving voice information and text information transmitted from the management station system 40 and outputting the same through an output device such as a monitor and a speaker.

That is, FIG. 1 shows a state in which voice, location information and text information are simultaneously transmitted and received between the mobile body 30 and the management station system 40 by the mobile data terminal 10 according to the present invention.

At this time, the management station system 40 is a system for controlling the location information of the mobile body 30, as shown in the figure receives various voice information and location information from the transceiver 20 mounted on the mobile body 30 Meanwhile, a transceiver 41 for transmitting voice information and text information to the transceiver 20, an output unit 43 for outputting information transmitted from the transceiver, and information transmitted from the transceiver And a storage unit 44 for controlling the information, an input unit 45 for receiving various types of information by the administrator, and a control unit 42 for controlling the information transmitted between the units.

In addition, the transceiver 20 is mounted on the mobile body 30, the mobile data terminal 10 is attached to the position data of the mobile body transmitted from the mobile data terminal 10 together with the existing voice communication In addition to transmitting to the management station system 40, it is configured to receive text or voice data transmitted from the management station system 40 and transmit the same to the mobile data terminal 10.

Figure 2 shows an internal configuration diagram of an embodiment of a mobile data terminal for mobile control according to the present invention, wherein the mobile data terminal 10 receives data by a GPS receiving chip, and is received by the processor. Data is stored, and the stored data is transmitted to the management station system 40 by the FSK modulation and demodulation unit and the transceiver 20, and the data received from the transceiver 20 is collected and stored by the processor again and displayed on the LCD. It is supposed to be.

That is, in the mobile data terminal according to the present invention, as shown in the figure, the identification code of the moving object by the ID setting switch of the input unit 17 is first stored in the processor of the second control unit 15, the GPS receiver 11 Position and time information acquired in real time by the GPS receiving chip of the communication unit 14 is also stored in the processor of the second control unit 15 via the RS232 communication chip of the communication unit 14.

At this time, if there is an operation of the user's transmission request PTT through the input unit 17 is recognized as an interrupt, the ID, position, and time information stored in the processor of the second control unit 15 are modulated by the FSK modem of the interface 13. The transceiver 20 is transmitted to the management station system 40. Further, even when there is no transmission request PTT operation of the user, when the transmission request for the above information is received from the management station system through the transceiver 20, the second control unit 15 transmits the information to the transceiver 20. Can be transmitted to the management station system 40 via the system.

On the other hand, the text or voice data transmitted from the management station system 40 and received from the transceiver 20 is stored in the processor of the first control unit 16 through the RS232 communication chip of the communication unit 14, the first The processor of the controller 16 converts the received text or voice data into a communication protocol that can be received by the LCD display of the output unit 12 and transfers the received text or voice data to the output unit 12 so that the text can be displayed.

3 is an internal circuit diagram of an embodiment of a mobile data terminal for controlling a mobile device according to the present invention, and shows an example of a specific circuit diagram for realizing FIG.

At this time, C1 is the processor of the second control unit 15, C2 is the processor of the first control unit 16, C3 is the RS232 communication chip of the communication unit 14, C4 is the ID of the input unit 17 The setting switch is shown.

4A is a flowchart illustrating a process of collecting and storing location and time information in a data transmission method using a mobile data terminal for controlling a mobile according to the present invention, and the method is performed in the mobile data terminal 10. Indicates.

First, when the user goes through the initial setting process (401) and set the ID through the input unit 14, the processor of the second control unit 15 stores the ID (402), the user The interrupt mode is set through the input unit 14 (403).

On the other hand, the second control unit 15 determines whether the start point of the position and time information is input from the GPS received data (404), and if the start point is input, the position and time information continuously until the end point is input. While receiving (405), when the end point is input (405) it stores the extracted position and time information (406). At this time, the second control unit 15 continuously receives and extracts new data and updates again.

That is, the process shown in FIG. 4A is an algorithm for acquiring data, storing the ID of the moving object first, and then detecting '$ GPGGA', which is a record corresponding to the position data, at the output of the GPS receiver chip. After sorting and storing up to date, the next output data is continuously received and updated while being stored.

4B is a flowchart illustrating a process of collecting and transmitting position and time information in a data transmission method using a mobile data terminal for controlling a mobile according to the present invention, and the method is performed in the mobile data terminal 10. Indicates.

That is, while the position and time information are stored through the process illustrated in FIG. 4A, the second control unit 15 determines whether a transmission request for the acquired data is input from the input unit 17 (451). When the transmission request is inputted, the transceiver 20 waits for a time for switching from the reception mode to the transmission mode (452), and sets the transmission speed (453). After the waiting time has elapsed, the stored ID is transmitted to the management station system 40 through the transceiver 20 (454), and then the stored position and time data are transmitted (455). On the other hand, after transmitting the stored information according to the above process, new data is stored again through the process shown in FIG. 4A.

That is, FIG. 4B relates to data transmission. When the PTT of the transceiver 20 is pressed, an interrupt is generated immediately. When an interrupt is recognized by the processor of the second controller 15, the transmitter waits 20 ms, which is the transceiver switching time. After transmitting the ID, time and position data to the management station system 40, the algorithm returns to the data acquisition process.

FIG. 5 is an exemplary view of an output unit screen in a management station system of the mobile control system to which the present invention is applied, and shows an example of a screen for the operator of the management station system to monitor various information.

At this time, the upper part of the screen shown in FIG. 5 is a reception window of data transmitted from the transceiver 20 of the moving object 30 through the process shown in FIG. 4B, and the lower part of the screen is shown in the management station system 40. It is a window to edit the character for transmission to the transceiver 20.

That is, the management station system 40 receives and manages various types of information from the mobile data terminal 10 and transmits necessary information to the mobile data terminal 10.

FIG. 6 is an exemplary view showing a communication sequence of a data transmission method using a mobile data terminal for controlling a mobile device according to the present invention, wherein each mobile data terminal 10 automatically manages its own mobile station under the control of the management station system 40. A flow of transmitting location information and the like to the management station system 40 is shown.

In the above, the mobile data terminal 10 manually transmits the position data of the moving object to the management station system 40 according to the operation of the user's PTT, and receives and outputs voice or text data from the management station system 40. 6 has been described, a process in which such processes are automatically performed by the management station system 40 is described.

That is, FIG. 6 illustrates a method of acquiring moving data for a plurality of moving objects in a management station system, after polling the IDs of the mobile data terminals 10 mounted on the plurality of moving objects 30 in a predetermined order. The communication sequence which acquires the positional data of each mobile body through each mobile data terminal 10 is shown.

On the other hand, for the automatic transmission and reception function as described above, the manager of the mobile unit 30 turns on the transceiver 20 at a predetermined time of position reporting (confirmed by the GPS time signal of the mobile data terminal 10). In this case, the mobile data terminal 10 and the transceiver 20 may be always turned on. In this case, when the mobile data terminal 10 receives the information for calling its ID from the management station system 40, the mobile data terminal 10 transmits the location and time data to the management station system 40 after responding thereto. The management station system 40 can acquire the position information of all the moving objects in order through the above processes.

At this time, the operation of the PTT for transmitting data in the mobile data terminal 10 is relayed by a control unit (first control unit 16 or second control unit 15) of the mobile data terminal 10. It is replaced by automatic operation.

On the other hand, it will be described again with respect to Figure 6 as follows.

That is, each mobile body 30 continuously acquires and stores the GPS position and time information through the process shown in FIG. 4A, while waiting for a call of the local station ID from the management station system 40. FIG.

At this time, the management station system 40 calls the ID of the mobile data terminal 10 mounted on the mobile body 30 twice in a predetermined order, and waits for a response from the mobile data terminal 10.

At this time, if there is no response, the mobile data terminal 10 is called in the next order, and if there is a response, the position and time data are subsequently received.

When the reception of the data is completed, the acknowledgment signal is transmitted to the mobile data terminal 10 of the moving object. When the received data is uncertain, the position data of all the moving objects is acquired by transmitting a signal requesting retransmission of the data.

The present invention is not limited to the embodiments described above, and various modifications and changes can be made by those skilled in the art, which are included in the spirit and scope of the present invention as defined in the appended claims.

The present invention as described above can be easily connected to the input and output terminals of the VHF or SSB transceiver, there is an excellent effect that can accurately determine the position of the moving object at a desired time.

In addition, the present invention can be connected to the monitor of the GIS to perform the identification and efficient control of the moving object, not only can deliver the necessary text messages to the moving object at the same time, but also can be produced in a compact, lightweight, low-cost module Excellent effect.

In addition, the present invention does not incur communication costs by using a method using a transceiver, and has an excellent effect of implementing an integrated service of voice and data.

In addition, the present invention, in the VMS configuration for managing the outgoing status and position of small vessels, especially fishing vessels of the sea, in reality, by real-time fully digital automation of the voice communication and manual input system between the management station system and the vessel, There is an excellent effect that can manage the location information, such as ships.

Claims (7)

Input unit 17 for receiving the ID setting information of the terminal and the interrupt signal by the PTT operation, GPS receiver 11 for receiving the position and time information of the moving object by the GPS receiver chip, and according to the control signal In the mobile data terminal for moving object control comprising an output unit 12 for outputting voice data, While storing the ID setting information input through the input unit 17, while receiving and storing the position and time information received through the GPS receiver, interrupts if there is a user's transmission request PTT operation through the input unit 17 The ID information, the location and the time information stored in the control unit are controlled to be transmitted to the management station system 40 through the external transceiver 20, and the ID polling signal received from the management station system 40 is A second control unit (15) which controls to transmit the position and time information to the management station system (40) automatically through the external transceiver (20) when it corresponds to the previously stored ID; A communication unit 17 for transmitting the position and time information received through the GPS receiver to the second control unit through a communication chip; Under the control of the second control unit modulates the ID information, position and time information to be transmitted to the transceiver 20, the terrestrial ultra high frequency (VHF) of the transceiver 20 or maritime high frequency (HF: High Frequency) An interface 13 for communicating with the SSB transceiver 20 in the band; And Receiving and storing text or voice data transmitted from the management station system 40 through the transceiver 20 and the interface 13 through the communication unit, and controlling to output the received text or voice data. 1 including the control unit 16, The first controller determines whether the starting point of the position and the time information is input from the GPS data received through the GPS receiver 11, and if the starting point is input, the position and time information is continuously maintained until the ending point is input. And receiving and storing the extracted position and time information when an endpoint is input. delete delete delete delete delete delete

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