WO2010140858A2

WO2010140858A2 - Converged broadcasting and communication system for schools

Info

Publication number: WO2010140858A2
Application number: PCT/KR2010/003584
Authority: WO
Inventors: 최현범
Original assignee: 폰 시스템주식회사
Priority date: 2009-06-04
Filing date: 2010-06-03
Publication date: 2010-12-09
Also published as: CN102449939A; KR100919314B1; CN102449939B; WO2010140858A3

Abstract

The present invention relates to a converged broadcasting and communication system for schools, which is installed in a school to provide broadcasting and communication services. The system comprises: a broadcasting / communication convergence unit for multiplexing together broadcast and communication signals with optical signals of different wavelengths and then transmitting a converged broadcast-communication optical signal through an optical fiber; and a receiver for receiving the optical signal from the broadcast / communication convergence unit, demultiplexing the signal according to wavelength band, and then transmitting the separated broadcast and communication signals to a corresponding end terminal, wherein the receiver includes: a sensor part equipped with a temperature sensor for detecting an indoor temperature; and a receiving control part, which controls the processing of the signal transmitted from the broadcasting / communication convergence unit and receives a signal outputted from the temperature sensor of the sensor part to display the detected temperature on a display. With this converged broadcasting and communication system for schools, it is possible to integrate the broadcasting service and the communication service and facilitate monitoring of the classroom environment by detecting and providing information about classroom temperature, the presence of students and carbon concentration to an administration server, thereby increasing the device utility.

Description

Broadcasting Communication Convergence System for Schools

The present invention relates to a school broadcast communication convergence system, and more particularly, to a school broadcast communication convergence system capable of monitoring a indoor environment while being able to service broadcasting and communication.

The current telecommunications and broadcasting network infrastructure is divided into several parts. In other words, broadcasting is divided into terrestrial, CATV, and satellite broadcasting, and communication has been divided into various types of communication networks such as the Internet, mobile communication, and public communication (PSTN).

For general subscribers, Internet service and Video On Demand (VOD) broadcasting service are delivered to PC through ISP (Internet Service Provider), and multi-channel broadcasting is directly serviced via terrestrial wave, CATV cable broadcasting network or satellite Services are being received using terminal means such as TV through various media such as satellite broadcasting.

However, since there exists a broadcast service using such various media, in order for the same subscriber to use various broadcast services, an appropriate system must be provided for each service. In other words, for CATV broadcasting service, a system such as cable network and CATV STB is required, and for satellite broadcasting service, a separate satellite antenna and satellite STB and a separate equipment from IPDSLAM system and modem for VOD service should be constructed. It is necessary. In this reality, since broadcasting is not integrated, subscribers in the home increase the cost of using various services and consequently increase the burden of providing the service.

This network structure does not meet the expectations of consumers expecting a converged service that does not communicate with broadcast in the current network where multimedia services are mainstream, and demands for an integrated network structure that can implement a converged communication and broadcast service. Expectations are growing.

To this end, methods for integrating broadcasting and communication services have been proposed. For example, Korean Patent Publication No. 2005-0081024 discloses a broadcasting communication convergence access system.

Meanwhile, even in the case of an PA system installed in a school, a company, or a building, which can provide its own announcement, the necessity of constructing a broadcast communication convergence service system including PA is increasing.

However, since the equipment applied to the receiving end of the broadcast communication convergence service system is simply configured to perform a data relay processing function, the utilization of the device is inferior.

In particular, when establishing a system that can monitor various environmental information such as the need for ventilation, the occurrence of fire, and the presence of students, according to the carbon concentration in the classroom of the school, it is separate from the receiving equipment of the broadcasting communication convergence service system. There is a disadvantage to build a device.

The present invention was devised to improve the above problems, and provides a school broadcasting communication convergence system that can provide a function for detecting, monitoring, and managing indoor environment information of a school while supporting a broadcasting communication service. There is this.

In order to achieve the above object, the school broadcasting communication convergence system according to the present invention is installed in a school to support broadcasting and communication services in a school broadcasting communication convergence system, wherein the broadcast signals and communication signals having different wavelengths of optical signals A broadcasting / communication fusion unit for multiplexing and transmitting a converged communication broadcast optical signal through an optical fiber; And a receiving unit for receiving the optical signal transmitted from the broadcasting / communication fusion unit, demultiplexing the wavelength band by wavelength band, and processing the broadcast signal and the communication signal which are separated, and transmitting the same to the corresponding terminal terminal. A sensor unit provided with a temperature sensor for detecting a temperature; And a reception control unit controlling the processing of the signal transmitted from the broadcasting / communication fusion unit, and receiving the signal output from the temperature sensor of the sensor unit and displaying the detected temperature through the display unit.

Preferably, the temperature sensor is an optical coupler is provided on the receiving end optical communication line used for transmitting the optical signal of the receiving unit for branching the signal; An optical fiber grating having a plurality of gratings formed in the optical fiber; A circulator for transmitting an optical signal branched from the optical coupler to the optical fiber grating and outputting light reflected from the optical fiber grating in a path different from an incident path; And a light detector that calculates a temperature from the wavelength change of the light reflected by the optical fiber grid and received through the circulator and outputs the temperature to the reception controller.

The apparatus may further include a management server connected to the broadcasting communication fusion unit to control and manage a plurality of receivers. The sensor unit may further include an RF reader that recognizes an RF tag worn by a student. Receives the received RF tag information from the reader and transmits to the management server connected to the broadcast communication convergence unit.

More preferably, the sensor unit further includes a carbon amount detection sensor for detecting a carbon concentration, and the reception control unit sends a message to perform ventilation through the display unit when the amount of carbon detected by the carbon amount detection sensor reaches a set upper limit value. Send it out.

In addition, the reception control unit transmits the temperature information detected by the temperature sensor to the management server, and the management server, if it is determined that the temperature received from the receiver reaches the set the expected fire temperature alarm through the receiver to predict the fire Send a signal.

According to the broadcast communication convergence service system for school according to the present invention, it is possible to integrate the broadcast and communication services, while detecting the temperature information, student presence information, carbon concentration information in the classroom and provide it to the management server to the environment in the classroom It can facilitate the monitoring and management of the system and increase the utilization of the device.

1 is a block diagram showing a broadcast communication convergence system according to the present invention,

FIG. 2 is a block diagram illustrating in detail the receiver of FIG. 1.

3 is a view showing in detail the temperature sensor of FIG.

Hereinafter, a broadcast communication convergence system according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram showing a school broadcasting communication convergence system according to the present invention.

Referring to FIG. 1, the school broadcasting communication fusion system includes a broadcasting communication fusion unit 110, a management server 130, an optical distributor 140, and a plurality of receivers 200.

The broadcast communication fusion unit 110 multiplexes a fused communication broadcast optical signal by multiplexing a satellite broadcast signal, a CATV broadcast signal, a public address signal, and an internet data signal, which is a communication signal, with optical signals having different wavelengths. Transmit via 141.

The PA signal is a broadcast signal output from the PA system 120 installed in the school.

In addition, the broadcast communication fusion unit 110 relays the communication between the management server 130 and the receiver 200.

The management server 130 integrates and manages each receiver 200 installed in correspondence with classrooms, lecture rooms, or other facilities in the school.

The management server 130 is constructed of a general computer, and processes data transmitted from the plurality of receiving units 200 to be described later with the management server 130 as a reception address, and a detailed function will be described later.

The detailed structure of the broadcasting communication fusion unit 110 is disclosed in various ways, such as Korean Patent Publication No. 2005-0081024, and a detailed description thereof will be omitted.

The optical splitter 140 distributes the signals transmitted from the broadcast communication fusion unit 110 through the optical fiber 141 to the plurality of receivers 200.

The receiver 200 is constructed to provide a service corresponding to each classroom. The receiver 200 receives an optical signal transmitted from the broadcast / communication fusion unit 110 and demultiplexes each wavelength band to process a separated broadcast signal and a communication signal. The generated CATV broadcast signal, satellite broadcast signal, public address signal, and internet data signal are transmitted to the corresponding terminal.

In addition, the receiver 200 processes a signal received from the management server 130.

The detailed structure of the receiver 200 will be described with reference to FIG. 2.

The receiver 200 includes a wavelength multiplexer (WDMMUX) 210, a receiver processor 220, a sensor unit 270, and a display unit 280.

The wavelength multiplexer (WDMMUX) 210 receives the optical signal transmitted from the optical splitter 140 and demultiplexes the wavelength band for each wavelength band.

In addition, the wavelength multiplexer 210 multiplexes the uplink optical signal and transmits the multiplexed uplink optical signal to the broadcasting communication fusion unit.

The broadcast signal processor 230 photoelectrically converts a broadcast signal transmitted from the wavelength multiplexer 210 and outputs the broadcast signal to a corresponding terminal.

That is, the broadcast signal processor 230 transmits the received satellite broadcast signal to the television (TV) 233 through the satellite set top box (STB)) 231.

In addition, the broadcast signal processor 230 outputs the received CATV signal to the television (TV) 233 through the CATV set-top box (STB) 241, and the public address broadcast audio signal through the speaker 235 .

The data receiver 250 receives a downlink communication signal including a 1490 nm internet data signal transmitted from the wavelength multiplexer 210 and outputs the received downlink communication signal to a computer (PC) or an internet phone (not shown). A 1310 nm uplink optical signal is generated and sent to the wavelength multiplexer 210.

The reception controller 260 controls the processing of the signal transmitted from the broadcasting / communication fusion unit 110.

That is, the reception controller 260 controls the signal processing of the broadcast signal processor 230 and the data receiver 250, and processes the signal detected by the sensor unit 270.

The sensor unit 270 may include a temperature sensor 271, a carbon amount (CO ₂ ) detection sensor 272, a power consumption detection sensor 273, and an RF reader that detect a temperature of an indoor, that is, a classroom, in which the receiver 200 is installed. 274).

The temperature sensor 271 is preferably configured to detect the temperature by using the optical signal transmitted through the receiving optical communication line used for the optical signal transmission of the receiver 200.

This temperature sensor 271 will be described with reference to FIG. 3.

First, the data receiver 250 which receives the downlink optical signal transmitted from the wavelength multiplexer 210 and generates the uplink optical signal and transmits it to the wavelength multiplexer 210 includes a light source 251, a light source driver 252, An optical receiver 254, a data receiving processor 255, and a circulator 253 are provided.

The data reception processor 255 controls the light source driver 252 to generate an optical signal corresponding to the upstream data received from the computer PC or the upstream data output from the reception controller 260.

The optical receiver 254 performs a photoelectric conversion process on the downlink optical signal received through the circulator 253 from the receiver optical communication line 212 provided between the wavelength multiplexer 210 and the data receiver 250 to perform a data reception processor 255. )

On the other hand, the temperature sensor 271 is constructed to detect the temperature by using the optical signal for communication transmitted and received through the receiving end optical communication line 212.

Unlike the illustrated example, the temperature sensor 271 may be constructed to branch and use the light transmitted through the receiving end optical communication line connected between the optical splitter 140 and the receiver 200.

The temperature sensor 271 includes an optocoupler 271a, a circulator 271b, an optical fiber grating 271c, and a photodetector 271d.

The optical coupler 271a is a splitter for splitting an optical signal transmitted through the receiving optical communication line 212 and is installed on the receiving optical communication line 212 used for transmitting the optical signal of the receiving unit 200. Let's do it. In the illustrated example, an optical communication line is connected between the wavelength multiplexer 210 and the data receiver 250.

The circulator 271b transmits a signal transmitted from the optical coupler 271a to the optical fiber grating 271c through the optical fiber branched to the receiver optical communication line 212, and transmits the light reflected from the optical fiber grating 271c to the photodetector. Output to (271d).

In the optical fiber grid 271c, a plurality of gratings are formed in the optical fiber.

The photodetector 271d calculates a temperature from the wavelength change of the light reflected by the optical fiber grating 271c and detected and outputs the temperature to the reception controller 260.

The temperature sensor 271 provides the advantage that the structure is simplified by using the light generated by the communication light source 251, and the advantage that the temperature measurement range is wide.

The carbon amount detection sensor 272 is installed in the classroom to detect the carbon concentration, and outputs the detected carbon concentration to the reception controller 260.

The power consumption detection sensor 273 receives the detected power consumption information installed in the power supply line so as to detect the power consumption supplied through a power supply line wired to use a lamp or other power device in each classroom. Output to the control unit 260.

The RF reader 274 is assigned a unique identification number for each student to recognize the RF tag for student recognition worn by the student, and outputs the recognized unique identification information to the reception control unit 260.

The reception controller 260 receives the RF tag information recognized from the RF reader 274 and periodically transmits the received RF tag information to the management server 130 connected to the broadcasting communication fusion unit 110 together with the receiver 200 unique information.

The reception controller 260 displays the temperature information detected by the temperature sensor 271 through the display unit 280, and transmits the temperature information to the management server 130.

Here, the display unit 280 may be used to visually recognize educational effects and environmental information by visually displaying environmental information, that is, temperature information, carbon concentration information, power consumption information, and the like in the classroom installed in the classroom.

The reception control unit 260 processes the display information to be displayed on the display unit 280 when the carbon amount detected by the carbon amount detection sensor 272, that is, the carbon concentration reaches a set value, that is, a value that requires ventilation, is displayed. do.

Unlike this, the reception control unit 260 is configured to send a message to perform ventilation or output through the speaker 235 when the carbon concentration detected by the carbon amount detection sensor 272 reaches a set value. Can be.

Alternatively, the reception controller 260 periodically transmits the carbon concentration information detected by the carbon amount detection sensor 272 to the management server 130 connected to the broadcast communication convergence unit 110 together with the receiver 200 unique information. Can be constructed to In this case, when the management server 130 reaches the set value of the received carbon concentration, that is, a value that needs to be vented, if the display information to perform ventilation to the corresponding receiver 200 is displayed to be controlled through the display unit 280, do.

The reception controller 260 displays the power consumption received from the power consumption detection sensor 273 through the display unit 280, and transmits power consumption information to the management server 130.

The management server 130 stores the RF tag information received from each receiver 200 together with the receiver 200 unique information so that the student can grasp the activity location information in the school.

In addition, the management server 130 may be configured to automatically control the operation of the air conditioner or heater using temperature information transmitted from each receiver 200.

In addition, the management server 130 is configured to transmit a fire alarm signal through the receiver 200 regardless of whether or not the actual fire occurs when the temperature information transmitted from the receiver 200 reaches a set temperature, for example, 60 ℃. desirable.

In this case, it is possible to prevent the occurrence of fire in the possible stage of fire occurrence.

Claims

In the school broadcasting communication convergence system installed in the school to support broadcasting and communication services,

A broadcast / communication fusion unit for multiplexing a broadcast signal and a communication signal into optical signals having different wavelengths and transmitting a fused communication broadcast optical signal through an optical fiber;

And a receiver for receiving an optical signal transmitted from the broadcasting / communication fusion unit, demultiplexing the wavelength band by wavelength band, and processing a broadcast signal and a communication signal which are separated and transmitted to a corresponding terminal.

The receiving unit

A sensor unit provided with a temperature sensor for detecting a room temperature;

And a reception control unit controlling the processing of the signal transmitted from the broadcasting / communication fusion unit, and receiving a signal output from the temperature sensor of the sensor unit and displaying the detected temperature through a display unit. Communication convergence system.
The method of claim 1, wherein the temperature sensor

An optical coupler installed on a receiver optical communication line used for optical signal transmission of the receiver and for branching a signal;

An optical fiber grating having a plurality of gratings formed in the optical fiber;

A circulator for transmitting an optical signal branched from the optical coupler to the optical fiber grating and outputting light reflected from the optical fiber grating in a path different from an incident path;

And a light detector for calculating a temperature from the wavelength change of the light reflected by the optical fiber grating and received through the circulator and outputting the temperature to the reception controller.
According to claim 2, further comprising a management server connected to the broadcast communication convergence unit for controlling and managing a plurality of receivers,

The sensor unit further includes an RF reader for recognizing the RF tag worn on the student,

And the reception control unit receives the RF tag information recognized from the RF reader and transmits the received RF tag information to the management server connected to the broadcasting communication fusion unit.
The method of claim 3, wherein the sensor unit further comprises a carbon amount detection sensor for detecting the carbon concentration,

And the reception control unit transmits a message to perform ventilation through the display unit when the carbon amount detected by the carbon amount detection sensor reaches a set upper limit value.
The method of claim 4, wherein the reception control unit transmits the temperature information detected from the temperature sensor to the management server,

And the management server transmits a fire prediction alarm signal through the receiver when it is determined that the temperature received from the receiver reaches a set fire expected temperature.