KR20090099930A - Remote controll system by muti modem - Google Patents

Abstract

PURPOSE: A remote control system by a multi-modem is provided to be used in not only the national but also the oversea by using the WCDMA and digital TRS network. CONSTITUTION: A remote control system by a multi-modem comprises a multi-board(29) and a remote server(32). The software of the multi-board is composed of a polling scheduler, an AT command statement interpreter, a serial event processing module, a message switch process, a WCDMA transceiving process, a digital TRS transceiving process and an Etc transceiving process. The serial event processing module is serially connected to remote electric and electronic devices to transfer an interrupt, generated from the devices, to the polling scheduler. The polling scheduler determines whether an enabled modem exists and then transmits data to the enabled modem.

Description

Remote control system by multimodem {Remote Controll System By Muti Modem}

The present invention is a WCDMA network which is a worldwide standard mobile communication network and a standardized international common frequency network.

Using the TETRA network to collect remote data and analyze the collected information;

This technology is about controlling remote devices using both WCMA modem and TETRA network simultaneously.

It is the core of the present invention.

Previously, the inventions specified a method of controlling a remote device using multiple modems.

However, it did not present the technology of specific network and modem control.

The method of using a plurality of modems invented in the past can

It was the limit of the analog TRS network. These networks were used in the past but

There is a problem that is no longer used in the future.

On the contrary, the present invention is a WCDMA network and a TETRA network which are both global trends and standards.

Is based on.

Existing inventions do not provide a way to specifically control the modem.

Did not

In the present invention, the standard protocol shown in the AT Command specification that is an international standard

The method of controlling the modem by using a specific method is specified. Meet global standards

This is favorable for future overseas exports.

Specific rules for multiboards that directly control remote electrical and electronic devices

By presenting the key architecture, we can present the methods and techniques that can be commercialized immediately.

It was.

Using the WCMA modem 20 and the digital TRS modem 21 at the same time

Techniques and methods for remotely controlling electronics and electrical devices.

WCMA modem 20 and digital TRS using AT COMMAND, an international standard protocol

Inspect the modem 21 for normal operation and disable the abnormal modem.

Method and technology to automatically switch communication line to normal modem.

First, the present invention has an effect of increasing export in the field of remote control device.

Traditional remote controllers are based on CDMA or analog TRS networks

It can be used in a network, but only a few CDMA or analog TRS networks are used overseas.

Except for the majority of networks, they were not available.

The present invention uses the WCDMA and digital TRS network, which is the current global telecommunication network standard.

In addition, it can be used everywhere.

If it is verified in domestic environment, it can be exported directly without additional development.

It brings a linking effect.

Second, by presenting concrete modem control method and technology that meets international standards,

Remote control technology can be upgraded to the next level.

Until the present invention is clear how to control the communication modem

One solution did not come up.

In the present invention, AT is a standard interface protocol of 3GPPS and TETRA.

COMMAND is used to control WCDMA and digital TRS modems to meet international standards.

A new modem control method is presented.

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

1 is a block diagram of a remote control system using a multimode modem according to the present invention.

will be.

2 is a diagram illustrating a multi-board software configuration of the present invention.

The system according to the present invention is largely composed of a multi board 29 and a remote server 32.

The software configuration of the multi board 29 includes: polling scheduler (1), AT statement interpreter (2), and

Event processing module (3), message switch process (4), WCDMA transmit and receive process (6),

It consists of a digital TRS transmission / reception process 7 and an Etc transmission / reception process 8.

The serial event processing module (3) is connected in serial with remote electrical and electronic devices.

When an interrupt occurs from the device, it passes the data to the polling scheduler (1).

The polling scheduler (1) first determines which modem is enabled

After judgment, data is sent to the enabled modem.

At this time, the AT Command command interpreter 2 implements the WCDMA modem 20 and the digital TRS modem 21.

AT Command is sent by time to check each modem operation.

If the check indicates that something is wrong with each modem, the modem is currently enabled.

Disable and enable the normal modem.

The data read from the external serial interface device in the multi board is

Processed by AM7MDI, the process, the WCDMA modem 20 and the digital TRS modem 21

Are sent to.

1 illustrates a hardware configuration diagram for a multiboard.

The characteristics of each element of the hardware are as follows.

ARMTDMI (14) is the heart of a multiboard that handles and computes all data on the multiboard.

It is a micro process that can be called wealth.

It calculates and processes data entered through external communication interface.

Specifically, data is read and valid from the remote device via the serial interface.

The data is parsed and sent to the WCDMA modem 20 or the digital TRS modem 21.

External memory 12 is a memory that is expected to expand. Memory capacity overflows

In the long run, the memory guarantees memory space. In other words, cashmere

It can be said to play the role of Mori.

Memory Controller (13) initializes memory register values and manages memory.

Play a role.

Memory setting by reading configuration data of ROM area at initial boot of multiboard

USB 15 supports external USB communication. USB 2.O is supported.

Flash Memory I / F (17) Stores operating system and system information, and sometimes

It acts as an RAM and the Bus Bridge is a bridge station for communication between each chip.

To do.

The SRAM 16 holds the program's heap memory and loads the program to run.

Provide space.

Interrupt Controller (26) is used to generate the

Sensing and handling minor interrupts. Port (27) is general purpose data

It is directly connected to the modem by bus and used as a channel for transmitting and receiving data.

UART (22) Connects directly to remote electrical and electronic devices for serial data

It is used to send and receive data.

The Power Manager 23 serves as a power supply and a stabilizer circuit for each component and circuit.

SIO 28 serves as an interface for serial communication.

Modem Controller 19 can control the WCMA Modem 20 and Digital TRS Modem 21

WCDMA modem 20 is a dedicated modem for WCDMA communication, digital TRS modem 21

Used as a dedicated modem for TETRA communication.

1 shows a configuration of a remote control system using a multimodem.

2 shows software configurations of a multiboard.

3 shows a multiboard hardware configuration diagram.

Claims (2)

Multi-use WDMA modems and digital TRS modems for remote electrical and electronic devices Control techniques and methods The method of claim 1, Using AT Command, an international standard protocol, WCDMA modems and digital TRS modems Control Techniques and Methods

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