KR20030012681A - An Internet-based 3-dimensional remote monitoring system by using personal communication services phone and its operating method - Google Patents

Abstract

PURPOSE: A 3-dimensional remote monitoring system based on the Internet using an PCS(Personal Communications Services) and an operating method thereof are provided to monitor the data of all measuring points in the real-time regardless of the places capable of connecting to the Internet. CONSTITUTION: The system includes a server system measuring and providing the remote monitoring information to a plurality of client systems(300) having the VRML(Virtual Reality Modeling Language) through the Internet, and a wireless measuring system storing the data measured by a water quality measuring device in an internal memory and transmitting the measured data to the server system by using the PCS. The server system includes a modem(110) inputting the communication data from the wireless measuring system, a Visual Basic socket server(120) examining an address and a transmission error of the wireless measuring system by receiving the communication data from the modem(110), a database(150), a DBMS(DataBase Management System)(140), a web server(130) for providing the measured data to the client(300) through the Internet and an ASP(Active Server Page) placing between the web server(130) and the DBMS(140).

Description

Internet-based 3-dimensional remote monitoring system by using personal communication services phone and its operating method}

The present invention relates to an internet-based 3D remote monitoring system using a personal mobile communication device and a method of operating the same.

Today's rapid development of industry and its large-scale development projects are difficult to carry out efficient projects due to environmental pollution and preservation of natural ecosystems, which are emerging issues. Therefore, these large-scale development projects must be carried out in an environmentally friendly manner to ensure the sustainability of the project. For this purpose, it is essential to accurately identify environmental pollution sources, to find their ripple effects, and to seek effective control methods. Recently, a large number of expensive environmental monitoring systems have been developed using advanced equipment such as satellites that enable real-time monitoring and prediction for efficient environmental monitoring. However, the application of the system in a case where the measurement range is not very wide has many problems in terms of cost.

Meanwhile, due to the recent rapid spread of the Internet, it is possible to easily overcome the space limitations that occur during data transmission, and it is now possible to send and receive data anywhere in the world.In many fields such as factory automation, the introduction of such network technology is becoming common. There is a situation. For example, industrial sites such as factories are conducting monitoring through the network to check the working status, which not only alleviates the inconvenience of having to stay on the job site all the time, but also checks the status of the site wherever there is internet access. Therefore, much efficiency can be expected in time and space. In addition, monitoring over the Internet may be a good alternative to human effort in situations where humans may have inaccessible metrology environments or multiple locations in one place, but these technologies have not yet been initiated.

In addition, low-cost environmental instruments have a built-in RS232 interface for data transmission to and from the computer, and measured data for a certain period of time is stored in a mobile computer such as a notebook and analyzed off-line. Not practical In addition, recently, personal portable terminals such as PCS have been released with a data link function using a laptop as well as its own Internet access function, but a system for performing 3D remote monitoring on the Internet using PCS has not yet been disclosed.

An object of the present invention is to provide an Internet-based three-dimensional remote monitoring system using a personal mobile communication device and its operation method.

Other objects and advantages of the present invention will become more apparent from the following detailed description of the invention and the accompanying drawings.

1 is an overall configuration diagram of an internet-based three-dimensional remote monitoring system using a personal mobile communication device according to the present invention.

2 is a block diagram of a server system according to the present invention.

3 is an operation flowchart of a wireless measurement system / server / client according to the present invention.

4 is a circuit diagram of the interface unit for the connection between the instrument and the PCS according to the present invention.

5 is an actual configuration diagram of a wireless measurement system according to the present invention.

Figure 6 is an initial screen when connecting to the server system according to the present invention.

7 is an exemplary view of a VRML screen showing the position of a measurement sheet according to the present invention.

8 is an exemplary view of an ActiveX drive screen according to the present invention.

9 is an exemplary display screen of measurement data retrieved on a client according to the present invention;

The system of the present invention and its operation method have been developed for internet-based three-dimensional remote monitoring that enables efficient water quality monitoring of the Mangyeonggang water system and the sharing of measured data through the Internet, which are expected to affect the water quality of Saemangeum Lake.

This system is composed of a wireless measurement system that enables remote wireless data transmission by introducing PCS to a low-priced instrument having an RS232 interface, and a server system that enables real-time monitoring of data input from the wireless measurement system through the Internet.

<System composition and its operation method>

The overall structure of the system according to the invention is as shown in FIG. The wireless measurement system of FIG. 1 stores measurement data in a memory of a measuring instrument having a RS232 interface every time and transmits the data to a remote server using a PCS. In addition, the server accepts the data transmitted from the instrument installed in the measurement site, and allows it to be shared on the Internet. Functions and operations of each part of the whole system are as follows.

1. Wireless Instrumentation System

Most low- and mid-priced water quality instruments have an RS232 interface for data communication with computers, and recently released PCS also have an RS232 interface for data linking with notebook computers. Therefore, in order to transmit the data measured from the instrument to the remote server using the PCS requires a separate interface that converts the data from the instrument into a form suitable for transmission and sends it to the PCS. In the present invention, it is possible to configure an interface having the above function by using a microprocessor such as PIC16c73-10MHz.

Since most microprocessors have only one UART port for the RS232 interface, the present invention uses a UART inside the microprocessor for communication with a PCS requiring accurate timing, and the RS232 interface with the instrument is emulated by a program. In addition, in case of PCS not operating normally due to indiscriminate transmission message such as SMS (Short Message Service), the reset is forcibly generated by using the watchdog function of the microprocessor. In addition, an error check code (Check-sum) is also sent for accurate data transmission with the remote server.

2. Server system

The server is operated for the purpose of storing the measurement information from a plurality of measurement sites in a database and at the same time providing measurement information and measurement data expressed in three dimensions for the data request of the client. The configuration of the server system of the present invention is shown in FIG.

The socket server implemented with the Visual Basic of FIG. 2 firstly accepts a telephone call from a remote wireless measurement system through a modem, and secondly checks a unique address (ID) and a transmission error of the wireless measurement system. It stores it in the database and thirdly, it transmits the data to the ActiveX control running on the client. In addition, the web server of FIG. 2 transmits HTML, VRML, and ActiveX for the connection request of the remote client, and also executes an ASP for the data retrieval request of the client to transmit the retrieved data to the client. In the present invention, a variety of products including MS Access can be used as a database for storing measurement data. Figure 3 shows the overall operation of the wireless measurement system, server and client.

Now look at each of the components provided by the web server.

2.1 ActiveX

In the present invention, an ActiveX control is used to express real-time data and its data in a GUI that is easy for general users to understand, and is configured to automatically download and run when connected to the web.

2.2 VRML

In the present invention, it is preferable to implement a 3D model using a language having object-oriented characteristics. When using such a language, it is easy to express three-dimensional graphics. For example, it is possible to use VRML, a kind of language for representing virtual reality. However, it is obvious to those skilled in the art that three-dimensional models can be implemented using other languages.

2.3 ASP (Active Server Page)

In the present invention, a server-side scripting language is used in order to reduce the burden on the client from processing the 3D graphics on the client and to interface with the database. For example, as a server-side scripting language that runs on Windows-based web servers, you can use ASP, which is frequently used to link shopping malls and databases. This is because the ASP file is moved to the client along with the HTML file to execute the initial screen when the client connects, but the actual operation is executed on the server and only the result is sent to the client, thereby reducing the burden on the server.

3. Client

When the client connects to the designated URL (Uniform Resource Locator) of the web server through a web browser, the main screen as shown in Fig. 6 appears, and VRML downloaded with HTML displays the information of the measurement sheet in 3D graphics, and ActiveX It connects to the server's Visual Basic socket server and displays the current data in GUI on the browser in real time. To do this, client should download and execute HTML file, VRML file and ActiveX for internet distribution from web server, and need plug-in to execute VRML file. As an example, it is possible to use Cosmo Player of Cosmo Soft.

4. Examples

4.1 Wireless Measurement System

The circuit structure of the interface between the manufactured instrument and PCS is as follows. PIC16c73 is used as a microprocessor and a built-in UART (19200bps, 8bit data, 1 stop bit, no parity, hardware flow control) is used for communication with PCS, and RS232 interface with instrument is emulated using Port A0, A1. 9600bps 8bit data, 1stop bit, no parity). The AT command of the Dial-Up modem was used for PCS to transmit the measurement data obtained through emulation to the remote server (once per hour). When the transmission is completed, the connection is disconnected and the receiver enters the standby mode for receiving data from the instrument again. If the modem connection is unstable or an error occurs, the connection is retried until the transmission is completed successfully. The interface of the manufactured measuring instrument and the PCS is shown in FIG. 5.

The appearance of the wireless measurement terminal system designed for the experiment is shown in FIG. The wireless terminal used is LG's Cyber-ezX1 model and connects to the server at regular intervals according to the transmission setting of Model DN-1000L of the International Environment System.

4.2 Configuration of Servers and Clients

The initial screen when the remote client accesses the server is shown in FIG. VRML produced for the positioning of the sensor system installed in the Mangyeonggang water system and Active-X control driving screens for real-time monitoring in the remote are shown in FIGS. 7 and 8, respectively.

If the client presses the corresponding button to search the measured data for a certain period of time, it is possible to see the following search data by ASP running on the server and save it as a file in the client's storage medium.

The present invention can be variously modified and can take various forms and only the specific embodiments thereof are described in the detailed description of the invention. It is to be understood, however, that the present invention is not limited to the specific forms mentioned in the detailed description of the invention, but rather includes all modifications, equivalents, and substitutions within the spirit and scope of the invention as defined by the appended claims. It should be understood to do.

In the present invention, the Internet-based three-dimensional monitoring system according to the present invention was applied for real-time monitoring of the Mangyeonggang water system which is expected to have a great influence on the water quality of Saemangeum Lake. As a result, the usefulness of the system of the present invention was confirmed. In addition, the present system can monitor the data of all measurement points in real time regardless of the place where the Internet access is possible.

Claims (7)

In the system for remotely monitoring the environment in three dimensions based on the Internet, A server system for measuring and providing the remote monitoring information to a plurality of client systems having a VRML through the Internet; And A wireless measurement system that stores measurement data in the internal memory of the instrument every predetermined time with an RS232 interface, and wirelessly transmits the measurement data to the server system located at a remote location using a personal mobile communication device (PCS). Internet-based three-dimensional remote monitoring system using a personal mobile communication device having a. The method of claim 1, wherein the server system A modem for inputting call data from the radio measurement system; A visual basic socket server which receives the call data input through the modem and checks a unique address and a transmission error of the radio measurement system; A database for storing an error if the test result is not detected; A database management system for managing the database; A web server for providing the measurement data to the client via the Internet; And Located between the web server and the database management system, characterized in that it comprises a predetermined script language for use in the web server, Internet-based three-dimensional remote monitoring system using a personal mobile communication device. The internet-based three-dimensional remote monitoring system using a personal mobile communication device according to claim 1, wherein the wireless measurement system includes an interface unit for connecting a measuring instrument and a PCS. The method of claim 3, wherein the interface unit A microprocessor for controlling the interface unit; Means for supplying a predetermined clock to the microprocessor; A plurality of UARTs for communicating with the PCS; RS232 interface means for interfacing with the meter; Means for powering the microprocessor; And Internet-based three-dimensional remote monitoring system using a personal mobile communication device, characterized in that it comprises a plurality of ports for transmitting the output signal of the UARTs to the PCS. The Internet-based three-dimensional remote monitoring system using a personal mobile communication device according to claim 1, wherein the client system has a predetermined plug-in for executing a VRML file transmitted through the web server. In the system operation method for remotely monitoring the environment in three dimensions based on the Internet, Storing the measured data in a measuring instrument internal memory every predetermined time with a water quality measuring instrument having an RS232 interface; Wirelessly transmitting the measurement data to a server system located at a remote location using a personal mobile communication device (PCS) to a wireless measurement system; Providing, by a server system, the measured remote monitoring information to a plurality of client systems having a VRML through the Internet; Connecting the client system to the designated URL of the web server through the web browser; Downloading a three-dimensional screen graph of VRML with HTML by access to the designated URL; And Running the downloaded graph and remotely monitoring the information of the measurement, Internet-based three-dimensional remote monitoring system operating method using a personal mobile communication device. The method of claim 1, Setting a modem of the server in a standby state for receiving measurement data; Confirming whether an ID and data of a wireless measurement terminal are error when data is received from the wireless measurement system in the setting state; And If there is no error as a result of the check, characterized in that it further comprises the step of storing the data in a database, Internet-based three-dimensional remote monitoring system operating method using a personal mobile communication device.