KR100928153B1 - Home network system - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a home network system, and more particularly, to a system and method capable of operating as a system by including a PLC (Power Line Communication) communication modem to implement a HomeNetwrok system having heterogeneous system air conditioners. .

The home network system according to the present invention includes a wall pad that transmits a command signal to devices in a home network system, receives a command through the single RS-485 protocol from the wall pad, and applies only common functions between the devices. It characterized in that it comprises a PLC communication modem for receiving a common command signal from the MAIN PLC communication modem and the MAIN PLC communication modem as the command signal for interworking between heterogeneous devices.

 The present invention has the effect of controlling the system air conditioner of tens through one screen through one MAIN PLC communication modem between heterogeneous devices connected on the home network.

 Home Network, Home Device, PLC, System Air Conditioner

Description

Home Network System {SYSTEM FOR HOME NETWORK}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a home network system, and more particularly, to a system capable of operating as a single system including a power line communication (PLC) communication modem to implement a home network system having a heterogeneous system digital variable multi. It is about.

In recent years, while establishing a network network for Internet communication in a home, there has been a great increase in the case of connecting a plurality of home appliances through the network and building a home networking system composed of the home appliances.

That is, as a plurality of devices are configured to transmit / receive data through a network built in a home, the user may control the device through the network even in a place where the device is not located by connecting the device to the network.

Home network technologies can be broadly divided into wired and wireless, and wired technologies include telephone line, power line, Ethernet, IEEE1394, and USB. Wireless includes IEEE802.11x wireless LAN, HomeRF, Bluetooth, UltraWideBand (UWB), Zigbee and HiperLAN are the representative technologies.

So far, the method using the IEEE1394 protocol has led the development direction and has established itself as a standardization method for interoperability of home appliances. However, in the long term, the application in the home network is expanding as the wireless network solution is emerging due to the proliferation of mobile terminal devices. Seems to be.

The home network transmission and control protocol is a technology for determining the status of a product and failure of an information appliance and providing it to a user by defining a protocol for transmitting a message to a transmission medium and a message exchanged between information appliances.

These protocols include Jini, UPnP, LnCP, HNCP, and smart home server and gateway manufacturers are using their own protocols to implement home networks.

At this time, the plurality of devices forming the home networking system transmit and receive data to each other through the network, and in some cases, give IP addresses to the plurality of devices and control the flow of data so that the data can be transmitted and received smoothly. A home server may be connected to a network.

Accordingly, in order to provide information about a device, a protocol for data size, execution command, and the like is not defined as a standard, and each device manufacturer is defined as its own protocol.

The system air conditioner is a building-integrated air conditioner that designs and installs an installation site and an air conditioning system at an early stage of a building or in a renovation building. The refrigerant pipe connected to one outdoor unit is composed of single pipe in series, and up to 16 rooms can be connected indoors using various indoor units.

FIG. 1 is a diagram illustrating a system air conditioner showing a conventional home network system. As shown in the drawing, a wall pad 100, a first device 120, and a second device 130 are provided. Although the interface 110 is used, the first device 120 is a device using a 2400 bps communication speed, an even parity bit, a variable length packet length, and the second device 130 is a 4800 bps communication speed, The device uses null parity bits and fixed length packet length.

Therefore, although one standard required for application to a home network has to be determined for such a protocol, there is a problem that an integrated system and method capable of interworking between heterogeneous devices are required since it is not yet realized.

The present invention has been made to solve the problems of the prior art, to provide a home network universal integrated system that provides interoperability between heterogeneous devices connected on a home network.

That is, the present invention provides a universal home network integrated system that can control heterogeneous devices connected on the home network to the same protocol through a PLC communication modem to control the specifications of the devices.

In order to achieve the above object, the home network system according to the present invention includes a wall pad that transmits a command signal to devices in a home network system, and receives a command from the wall pad through a single RS-485 protocol. And a PLC communication modem for receiving common command signals from the MAIN PLC communication modem as the command signals for interworking between heterogeneous devices.

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As described above, the present invention has the effect of controlling severalteen system air conditioners through one screen through one MAIN PLC communication modem between heterogeneous devices connected on a home network.

In addition, when the number of repeaters and the number of indoor units are determined in the upper side where the common system air conditioner protocol is applied, control and status can be reflected regardless of the specifications of the system air conditioner devices to be installed in the field.

If the device for controlling devices connected on the home network is a web UI program, programming between heterogeneous devices is unnecessary every time by applying a single communication interface and common system air conditioner protocol. There is a feature that does not need to be applied.

Hereinafter, with reference to the accompanying drawings will be described in detail the operating principle of the preferred embodiment of the present invention. In describing the present invention, when it is determined that the detailed description of the related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description may be omitted.

The present invention relates to a system and method capable of remote control service for heterogeneous devices connected to a home network. In particular, a heterogeneous system air conditioner, that is, a system air conditioner, is converted to a common system air conditioner using a PLC integrated modem. To provide a system and method for interworking between home network devices that are integrated management.

To this end, the present invention provides a system and method that can be easily managed by a wall pad or a central management device by configuring a MAIN PLC modem for centralized management by connecting heterogeneous system air conditioner devices to each device through a PLC communication modem. do.

2 is a diagram illustrating a system air conditioner of a home network system according to an exemplary embodiment of the present invention.

Home network system according to the present invention is connected to one wall pad 200, the wall pad 200 and each of the heterogeneous devices (260, 270) PLC modems (240, 250) for interfacing the central basic command signal, The MAIN PLC communication modem 230 converts a basic command signal from the wall pad 200 and transmits a command to the PLC communication modems 240 and 250 connected to the respective devices 260 and 270.

Command transmission between the wall pad 200 and the MAIN PLC communication modem 230 and command transmission between the MAIN PLC communication modem 230 and the PLC communication modems 240 and 250 connected to the respective devices 260 and 270 are RS. -485 protocol 210.

 The protocol between the wall pad 200 and the MAIN PLC communication modem 230 is a heterogeneous common function (e.g., temperature and humidity control, on / off function for system air conditioner, temperature, time control function and on for boiler). ON / OFF function only), and by applying a common system air conditioning protocol to implement heterogeneous system air conditioning communication with only a single RS-485 protocol (210).

The MAIN PLC communication modem 230 communicates with the PLC communication modems 240 and 250 of the respective devices 260 and 270 in a common system air conditioner protocol, and is programmed to communicate even if several heterogeneous system air conditioners are attached to the bottom.

The PLC communication modems 240 and 250 that transmit commands to the devices 260 and 270 can control 8 to 16 indoor units per modem, and complicated wiring is achieved by using the PLC communication modems 240 and 250. Not required.

In addition, the PLC communication modems 240 and 250 convert the RS-485 protocol 210 of the corresponding devices 260 and 270 into a common system air conditioner protocol. That is, the PLC communication modem 240, 250 applicable to the protocol of the device 260, 270 is applied.

3 is a PLC communication modem block diagram according to an embodiment of the present invention.

The PLC communication modem 400 implements communication with the wall pad (generator) or the system air conditioner 300 as a serial interface. First, the 232/485 driver / receiver 410 converts electrical signals into serial signals conforming to the EIA RS-232C and RS-485 standards.

The high speed universal asynchronous receiver / transmitter (UART) 420 is a general purpose asynchronous transceiver having a first-in first-out (FIFO) function to convert serial signals and parallel signals.

The clock 430 operates the Neuron 3150 Chip 440 using a 10 MHz clock as a power supply unit or a collection of related circuits for operating the CPU.

The Neuron 3150 Chip (440) is a CPU on which the ANSI / EIA 709.2 Lonworks standard stack is mounted. It is a main CPU that manages power line communication, high-speed UART 420 communication, and various applications.

The customer system air conditioner application 450 is a source code that applies a system air conditioner function mounted on the Neuron 3150 Chip 440. Different applications are answered by the MAIN PLC modem and the PLC modem for the system air conditioner.

The PLC communication signal converter 460 converts a general protocol into a power line signal defined in ANSI / EIA 709.2 and transmits and receives a signal. The PLC communication signal converter 460 carries a carrier frequency of 132 kHz and 115 kHz on a 220 V / 60 Hz power supply to send related data, and is responsible for the modulation and demodulation of the corresponding signal.

The PLC communication signal to the PLC communication signal converter 460 is a signal transmitted by DCNB (Dual Carrier Narrow Band) at BPSK 132 kHz and 115 kHz in a 220 V / 60 Hz power source complying with the Lonworks ANSI / EIA 709.2 standard.

4 is a flowchart illustrating a MAIN PLC communication modem according to an embodiment of the present invention.

First, the wall pad periodically communicates using a polling method using a PLC communication modem and the EIA RS-485 standard (S100). The signal between the wall pad and the PLC communication modem is received through the UART inside the PLC communication modem, and then combines data of the common system air conditioner protocol (S101). The common system air conditioner protocol specification test checks whether the communication standard defined in the document is consistent, and then proceeds to the next step if it is normal, and if not, it ends immediately (S112). When passing the common system air conditioner protocol specification test, the system air conditioner control unit checks the system air conditioner protocol content to check whether the corresponding data is content for system air conditioner control (S103). In the case of the system air conditioner control, the system air conditioner registration table stored in the MAIN PLC communication modem is searched to determine whether the corresponding system air conditioner exists later (S104). When the MAIN PLC communication modem confirms the existence of the corresponding system air conditioner (S105), it is checked whether the corresponding function exists (S106), and then the corresponding system air conditioner control packet is transmitted to the PLC communication modem (S107).

If it is not the system air conditioner control, it is checked whether the corresponding protocol content is for the system air conditioner request (S108). In the case of the system air conditioner control, the system air conditioner registration table is searched again to determine whether the corresponding system air conditioner exists later (S109). If the system air conditioner exists (S110), the system air conditioner status is transmitted to the wall pad (S111).

When the status of the wall pad is requested, the system air conditioner stored in the MAIN PLC communication modem is transmitted to the wall pad. The system air conditioning status is updated on an event basis at that time towards the MAIN PLC communication modem. When controlling the system air conditioner, check the contents of the system air conditioner protocol to check whether the function is acceptable to the system air conditioner.

5 is a flowchart of a system air conditioner PLC communication modem according to an embodiment of the present invention.

Each system air conditioner PLC communication modem exists for each system air conditioner device, demodulates the ANSI / EIA 709.2 power line signal transmitted from the wall pad, receives PLC data, and checks for normal data (S201). The common system air conditioner protocol converter converts the common system air conditioner protocol into a system air conditioner protocol for a specific company (S202), and then analyzes the system air conditioner protocol for the device (S203). The device checks whether the data is about indoor unit control after checking the delivered system air conditioner protocol content (S204). If the system air conditioner protocol transmitted to the device is data corresponding to the indoor unit control, the indoor unit registration table stored in the system air conditioner PLC communication modem is searched for (S205), and the presence or absence of the corresponding indoor unit is determined (S206). If the indoor unit is present, the indoor unit status is transmitted through the RS-485 interface, which is a control packet, to the indoor unit (S207).

If the data is not about the indoor unit control, it is checked whether the corresponding protocol is about the indoor unit state request (S208). If the system air conditioner protocol transmitted to the device is data corresponding to indoor unit control, the indoor unit registration table stored in the system air conditioner PLC communication modem is searched for (S209), and the presence or absence of the corresponding indoor unit is determined (S210). Upon requesting the status of the indoor unit, the indoor unit status stored in the system air conditioner PLC communication modem is immediately transmitted using the PLC communication (S211). The indoor unit status is periodically reflected by the system air conditioner PLC communication modem to the indoor table by querying the indoor unit. In the event of a state change, the system air conditioning PLC communication modem passes the status table directly to the MAIN PLC communication modem.

Meanwhile, in the detailed description of the present invention, specific embodiments have been described, but various modifications are possible without departing from the scope of the present invention. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be defined not only by the claims below, but also by the equivalents of the claims.

1 is a system air conditioner showing a conventional home network system.

Figure 2 is a block diagram showing a system air conditioner of a home network system according to an embodiment of the present invention.

3 is a PLC communication modem block diagram in accordance with an embodiment of the present invention.

4 is a flow chart of a MAIN PLC communication modem according to an embodiment of the present invention.

5 is a system air conditioning PLC communication modem flow chart according to an embodiment of the present invention.

Claims (9)

In a home network system that controls common basic functions of heterogeneous system air conditioners, A PLC communication modem interfaced with the system air conditioner for each model, a wall pad for generating a command signal for controlling the basic functions of the system air conditioner, and a MAIN PLC communication modem for interfacing the PLC communication modem with the wall pad. But The PLC communication modem, wall pad, and MAIN PLC communication modem communicate with a common system air conditioner protocol for controlling common basic functions of the heterogeneous system air conditioners, and the corresponding PLC communication modem receiving a command signal from the MAIN PLC communication modem receives the received signal. And converting one command signal into a command signal corresponding to the control system air conditioner and transmitting the command signal. delete delete delete delete delete delete delete delete

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