KR20050104082A - Controller by using wireless module and the practical method thereof - Google Patents

Abstract

The present invention relates to a controller using a wireless LAN module for data communication and equipment / device control, and a method of operating the same. An MCU recognizes an input terminal receiving N digital signals or analog signals and a signal received from the input terminal. Input level converter for converting to a signal that can be converted to the MCU to receive and control the converted signal from the input level converter and wireless to transmit and receive data to and from the MCU and to transmit and control the control commands of the MCU to the control terminal wirelessly It consists of a transmission and reception block and an output level converter for converting the data of the MCU into a signal suitable for driving and controlling the equipment, and an output terminal for connecting the signal received from the output level converter to a decoder, and in the MCU RS232 / 485 port is provided to provide a communication interface, and the RS232 / 485 port There is provided a controller using a wireless LAN module, wherein the equipment / device is connected to control the connected equipment / device.

Description

Controller by using wireless module and its operation method {Controller by using wireless module and the practical method

The present invention provides a wireless LAN module having a protocol conversion and control function between the equipments of the same type and a data communication having a transmission function for turning on / off and controlling the power of the equipment / device and a reception function for sensing the status of the equipment / device. The present invention relates to a controller using a WLAN module for controlling equipment / devices and a method of operating the same.

Home automation (home automation) is a system that enables the electronic and automation of various electronic devices in the home in the use of electronic technology, using a telephone line, a power line, a web Method and the like.

However, the method of using a telephone line or the method of using a power line has a problem that it is not possible to perform numerical control such as control of a complicated electronic device or temperature and humidity control. In addition, in the method using the web, the conventional method uses a method of controlling electronic devices through a central server and individual home servers, but this method does not efficiently control electronic devices, and also controls the central server and individual servers. The high cost phenomena caused by the purchase, and the central and individual servers were large, it was difficult to install in a single house or small buildings. In particular, by controlling the current state of the home appliances in the home in a still image in the way using the existing web, it is not realistic, there was a problem that can not control the real-time control of various electronic devices.

Brutus, which has been in the spotlight recently, is one of the 1,600 (or 3,200) high-speed hopping systems, one of relatively short distances (approximately 10m) of personal area network devices. Typical applications include communication between laptops, cell phones, headsets, and computer peripherals. Voice communication and cable replacement are the main targets. Since the communication by Brutus shares the 2.45 GHz ISM band along with the communication by the IEEE 802.11b high-speed direct spread wireless LAN, there is a problem that a communication failure due to interference occurs when the number of used devices increases.

The present invention has been made to solve the above problems, by connecting a wireless LAN module to various equipment / devices such as home appliances, electronic products, etc. has a protocol conversion and control function between the heterogeneous equipment and connected to the wireless LAN module The purpose of the present invention is to provide a controller and its operation method using a wireless LAN module that provides a stable network environment from network congestion or channel interference by providing security and QOS by providing a path.

In the controller 10 using a wireless LAN module having a protocol conversion and control function between the equipment, the input terminal 120 and the input that can be connected to a variety of inputs to the terminal receiving N digital signals or analog signals The input level converter 130 converts the signal received from the terminal 120 into a signal of a specific level that can be recognized by the MCU 100, and receives and controls the signal converted by the input level converter 130. Send and receive data with the MCU (Multipoint Control Unit) 100 and the MCU 100 to transmit data to the level converter 140 and the control terminal 180, and wirelessly transmits the control results of the MCU to the control terminal 180 The output level translator 140 converting the transmission / reception block 110 to transmit a signal suitable for driving and controlling the equipment and the signal received from the output level translator 140 may be combined with a decoder. And an output terminal 150, which lock connection,

The MCU 100 is provided with an RS232 / 485 port 160 for providing a communication interface with the device / device 170, and the RS232 / 485 port 160 has a device / execution for executing a control command from the MCU / There is provided a controller 10 using a wireless LAN module, characterized in that the device 170 is connected.

In addition, the present invention provides a method for operating a controller 10 using a wireless LAN module having a protocol conversion and control function between the equipment, the step of attempting to connect to the control terminal 180 after the system initialization (S510), Attempting to connect to the control terminal 180 in the case of failing to set the self-control mode (S520), Attempting to connect to the control terminal 180 in the case of success in the step of setting to the remote control mode ( S530),

In the self-control mode setting step (S520), if the connection is successful after the reconnection with the control terminal 180, the remote control mode setting step is performed, and if the connection with the control terminal 180 fails, the input / output Retrieves and saves the status, and executes the reserved condition, controls the output, and periodically checks the possibility of connection with the control terminal 180 when an emergency input occurs or when a specific condition occurs such as setting a reservation or a timer. Including doing it,

The remote control mode setting step (S530), when receiving a control command from the control terminal 180, converts and controls the protocol to recognize the equipment / device 170, and stores the input and output state, if the emergency input occurs equipment / Modulates and controls the device recognition protocol, and if a specific condition such as a reservation or a timer occurs, performs the operation of the controller 10 using the wireless LAN module including transmitting the input / output state to the control terminal 180 after performing this. A method is provided.

Hereinafter, a controller using a wireless LAN module and an operation method thereof according to the present invention will be described with reference to the embodiment shown in the drawings.

As illustrated in FIG. 1, the present invention provides an input terminal 120, an input level converter 130, and a MCU (Multipoint Control) in a controller 10 using a wireless LAN module having a protocol conversion and control function between heterogeneous equipment. Unit) 100, the wireless transmission and reception block 110, the output level converter 140, the output terminal 150, RS232 / 485 port 160 and the equipment / device 170 and the control terminal 180,

The input terminal 120 receives a plurality of digital signals or analog signals and transmits them to the input level converter 130. The input level converter 130 transmits the signals received from the input terminal 120 to the MCU. A function of converting the signal to a specific level so that the 100 can recognize, the MCU 100 receives and controls the signal converted by the input level converter 130 and output level converter 140 and the control terminal And a function of transmitting data to the controller 180, and the wireless transmission / reception block 110 transmits and receives data to and from the MCU 100 and wirelessly transmits a control result of the MCU to a control terminal. 140 is a function for converting a signal suitable for driving and controlling equipment, the output terminal 150 is a decoder for converting the signal received from the output level converter 140 into an analog signal ( The RS232 / 485 port 160 is provided in the MCU 100 to provide a communication interface with the equipment / device 170, and the control terminal is transmitted from the controller 10. By transmitting the control result to the long-term / device 170, the equipment / device 170 is connected to the RS232 / 485 port 160 to perform a control command received from the control terminal 180.

The wireless transmission / reception block 110 implements hardware and software blocks for supporting wireless communication such as WLAN, Brutus, and the like. The equipment / device 170 is connected to a programmable logic controller (PLC), a home server, and the like.

In addition, the RS232 / 485 port 160 serves as an intermediate medium between equipment and sensors and the wireless LAN module, enables flexible data transmission from the equipment and sensors to the network, and directly controls the equipment through a dedicated protocol. have.

Using simple and flexible interface such as RS232 / 485 port 160, Ethernet, DIDO 410 interface, and providing simple, non-OS based, installation and management, and using 802.11b standard Continuity and scalability are established with existing client adapters by satisfying authentication requirements, and considering the stability and security such as security, QOS, and channel interference avoidance through providing a connection path with the WLAN module, The controller has an advantage of controlling 256 devices per controller by using a WLAN module having a protocol conversion and control function between the heterogeneous equipment.

2 and 3 and 4 illustrate an embodiment of the controller 10 using the WLAN module according to the present invention in more detail,

2 is implemented to be controlled by the controller 10 using the WLAN module by mounting the WLAN module 200 in the web camera 210,

The WLAN module supports an 802.11b-based standard, implements a conversion protocol between a camera and a controller, and transfers and controls MPEG4 211 encoded data.

The web camera module connects to the CCD sensor module, applies MPEG4 211 coding technology, provides OCX for CIF (120f / s) and VGA (30f / s), and client PC utilities, and is part-specific. It is easy to implement protocols and requirements, and it is also effective for cost reduction of non-OS based.

3 is implemented to be controlled by the controller 10 using the wireless LAN module by mounting the wireless LAN module in the equipment / equipment, such as automatic feeder 310 or boiler 320,

The equipment / device in which the WLAN module 300 is embedded includes a control function and performs a protocol interface function between the controller and the control terminal.

4 is another embodiment of the controller 10 using the wireless LAN module equipped with the DI / DO 410 instead of the RS232 / 485 port 160, the DI / DO module 400 recognizes the emergency signal 440 and Control of the home appliance 450 is possible.

The DI / DO module 400 checks the control state through interworking with the camera, and interworks with the home controller device 430 through the serial 411 to control the home appliance 450 or the emergency signal 440 and the fire. Security system 470 can be controlled.

In the above embodiment, a wireless web camera or an automatic feeding machine or a boiler is taken as an example, but other devices / devices, various sensors, and meter devices may be equipped with a wireless LAN module to control the same.

When described in more detail with reference to Figure 5 showing a method of operating a controller using a wireless LAN module according to the present invention configured as described above,

In the operating method of the controller using a wireless LAN module having a protocol conversion and control function between the equipment of the same,

After operating the controller 10 and initializing the system by connecting to a network, an attempt is made to connect with the control terminal 180 (S510).

If the connection fails when the connection with the control terminal 180 is attempted, the control mode is set to the self control mode. In the setting of the self control mode, the connection with the control terminal 180 is retried and the control is performed at this time. If the connection with the terminal 180 is successful, set the remote control mode, and if the connection with the control terminal 180 fails again, retrieve and store the input / output status, and specify the reservation or timer when an emergency input occurs. When a specific condition such as setting occurs, the reserved condition is performed, the output is controlled, and the connection possibility with the control terminal 180 is periodically checked (S520).

If the controller 10 is successfully connected to the control terminal 180, the remote control mode is set. The remote control mode can be recognized by the equipment / device 170 when the control command is received from the control terminal 180. Converts to a protocol to control the equipment / device 170, converts and stores the result value, stores the input / output state, transmits it to the control terminal 180, and converts the equipment / device recognition protocol when an emergency input occurs. If a specific condition such as a reservation or a timer occurs, the controller returns to the beginning of the remote control mode setting step after transmitting the input / output state to the control terminal 180 after performing this operation (S530).

The foregoing has described embodiments of the present invention, and the scope of the present invention is not limited to the above-described embodiments, and is modified and modified by those skilled in the art as well as the scope of the following claims. This is possible.

The present invention configured as described above installs a telephone line or a power line by controlling equipment and devices by using a wireless LAN module having a protocol conversion and control function between various heterogeneous equipments of home and industrial that deviates from the existing PC BASE wireless solution. Wireless control is possible, providing security and QOS by providing a connection path with a wireless LAN module, thereby providing a stable network environment from network congestion or channel interference.

1 is a view showing a controller using a WLAN module according to the present invention.

2 and 3 is an embodiment of a controller using a wireless LAN module according to the present invention.

Figure 4 is another embodiment of a controller using a WLAN module according to the present invention.

5 is a flowchart illustrating a method of operating a controller using a WLAN module according to the present invention.

** Explanation of symbols on the main parts of the drawing **

10: controller 100: MCU

110: wireless transmission and reception block 160: RS232 / 485 port

170: equipment / device 180: control terminal

200, 300, 400: WLAN module

Claims (7)

In the controller using a wireless LAN module having a protocol conversion and control function between these equipment, An input terminal for receiving a digital signal or an analog signal; An input level converter converting a signal received from the input terminal into a signal of a specific level that can be recognized by the MCU; An MCU which receives and controls the signal converted by the input level converter and transmits data to an output level converter and a control terminal; A wireless transmission / reception block for transmitting and receiving data with the MCU and wirelessly transmitting a control result of the MCU to a control terminal; An output level converter for converting the control signal into a signal suitable for driving and controlling equipment; It is composed of an output terminal for connecting the signal received from the output level converter to be combined with a decoder (Decoder), Controller using a wireless LAN module characterized in that for controlling the equipment / device through the connection with the control terminal. The method of claim 1, The wireless transmission and reception block is a controller using a wireless LAN module, characterized in that to implement a hardware and software block for supporting a wireless communication scheme, such as WLAN, Brutus. The method according to claim 1 and 2, The wireless LAN module of the wireless transmission / reception block supports an 802.11b standard, and includes a communication interface supporting 10Mbps Ethernet, RS232 / 485 port, and 8 DIDO ports, and an external antenna port and a reset switch. Controller using a wireless LAN module. The method of claim 1, The MCU is a controller using a wireless LAN module, characterized in that the RS232 / 485 port for providing a communication interface with the equipment. In a control method using a wireless LAN module having a protocol conversion and control function between these equipment, Attempting to connect with a control terminal after system initialization; A self-control mode setting step of setting a self-control mode when the connection attempt with the control terminal fails; A remote control mode setting step of setting a remote control mode when the connection with the control terminal succeeds; Control method using a wireless LAN module, characterized in that consisting of. The method of claim 5, In the self-control mode setting step, if the connection is successful after retrying the connection with the control terminal, the remote control mode setting step is performed; when the connection with the control terminal fails, the I / O state is retrieved and stored, and the emergency When an input occurs or when a specific condition such as a reservation or a timer is specified, a control method using a wireless LAN module includes performing a reserved condition, controlling an output, and periodically checking a connection possibility with a control terminal. . The method of claim 5, In the remote control mode setting step, when the control command is received from the control terminal, the device / device is converted into a protocol capable of recognizing and controlling the input and output state, and if an emergency input occurs, the device / device recognition protocol is modulated and controlled. If a specific condition such as a reservation or a timer occurs, the control method using a wireless LAN module comprising transmitting the input and output state to the control terminal after performing this.