KR102387394B1 - Broadcasting system capable of connecting with school broadcasting equipments having speaker matrix system by using an environment sensor monitoring - Google Patents

Abstract

Disclosed is a broadcasting system capable of interworking with school broadcasting equipment having a speaker matrix system using environmental sensor monitoring. A broadcasting system capable of interworking with school broadcasting equipment having a speaker matrix system using environmental sensor monitoring includes an environmental sensor for measuring fine dust concentration, fire detection, temperature, smoke detection, and air pollution; It is connected to the environmental sensor, controls an air conditioner, an air purifier, and a temperature controller according to the measured sensor information, and transmits text to one or more independent devices for audio source broadcasting, wired/wireless microphone broadcasting, and local local broadcasting to one or more independent devices a central control unit for controlling TTS-converted speaker output through the receiver; a control tower matrix connected to the central control unit, and the other end connected to an audio source, an air conditioner, an air purifier, and a temperature controller; and a plurality of independent devices connected to the central control device,
An independent device connected to the central control unit or one side is connected to the control tower matrix and the other side includes a plurality of independent devices connected to a plurality of speakers.

Description

Broadcasting system capable of connecting with school broadcasting equipments having speaker matrix system by using an environment sensor monitoring}

The present invention relates to a broadcasting system capable of interworking with school broadcasting equipment having a speaker matrix system using environmental sensor monitoring such as a fine dust sensor, a smoke sensor, a temperature sensor, and an air pollution sensor.

The audio device system converts the analog signal input for each wireless microphone channel into a digital signal with a power distributor, a wired microphone, a wireless microphone, an antenna splitter connected through each wireless microphone and antennas (ANT). At least one wireless receiver for converting, an audio mixer connected to the wireless receiver and a wired microphone and mixing analog signals for each channel, and a digital signal processor connected to the audio mixer; It consists of an equalizer (EQ) that adjusts the frequency level of the analog signal for each channel connected to the digital signal processor (DSP), a power amplifier that amplifies the analog signal, and one or more speakers that output the amplified analog signal.

1 is a configuration diagram of an existing acoustic device system.

There are dynamic type, electromagnetic type, electrostatic type, dielectric type, magnetostrictive type, etc. according to the method of converting electrical signals into sound waves. The dynamic type with good performance is widely used for music reproduction or voice communication.

The dynamic type uses the principle that when a negative signal current flows through a coil in the magnetic field of a permanent magnet, a mechanical force acts on the coil according to the strength of the current to cause motion.

In the electromagnetic type, negative current flows through the coil installed at the end of the permanent magnet to vibrate the iron piece between the coils, and this vibration is transmitted to the diaphragm through the lever to produce sound. Electromagnetic speakers have poor high-frequency characteristics and have a lot of distortion, so their use is gradually decreasing.

The electrostatic type is sometimes used for high-pitched sound, and the dielectric type and magnetostrictive type are used in the ultrasonic band of 20 kHz or higher, not the audible frequency. Among speakers, a tweeter used for a high frequency band of 10 kHz or higher is called a tweeter.

A type in which the diaphragm of a speaker is directly exposed to the air is called a radiation speaker, and a type in which the diaphragm is placed in a horn is called a horn type speaker. Most of the direct-radiation type are cone speakers, which are commonly used in radio and stereo devices, and some use a metal diaphragm.

A speaker is an acoustic device that converts an electrical signal into vibration of a diaphragm, generates a small wave in the air, radiates the sound wave, and outputs an acoustic signal, and is called a loudspeaker.

According to the structure, the speaker is classified into a cone type speaker, a dome type speaker, and a horn type speaker in which a horn is installed in front of a diaphragm.

A radiation speaker in which a diaphragm is placed directly in the air is mostly used as a cone speaker in a stereo radio device.

The cone speaker uses a cone-shaped plate for the diaphragm, and coin-type is used more than the electromagnetic type magnetic speaker (magnetic loudspeaker). Since the efficiency is proportional to the square of the total number of magnetic fluxes passing through the coil, a large-diameter speaker using a large magnet has good electro-acoustic conversion efficiency.

A speaker (loudspeaker) is manufactured by combining low (woofer, 20 to 100 Hz), mid (squawker, 100 to 1,000 Hz), and treble (tweeter, 1,000 Hz to 10 kHz) units according to the audio frequency band. A signal processing system, a power amplifier (Amp), and speakers (L, R) are provided.

A full range speaker that reproduces low to treble in the audible frequency band (20 to 20,000 Hz) is an in-woofer that reproduces low sound in the 20 to 100 Hz band, and reproduces the midrange in the hundreds of Hz to thousands of Hz bands. There are squawkers that do this, and tweeters that reproduce high notes in the range of several thousand Hz to 20 kHz.

According to the output sound pressure level (SPL, sound pressure level), frequency characteristics, and directional angle, the speaker reproduces voice in the range of 100 ~ 8000 Hz and music at 30 ~ 15,000 Hz considering the output and directional characteristics according to the acoustic characteristics of the space. play in band

=

μbar에 대한 사람이 들을 수 있는 가장 작은 소리를 '기준 음압'이라고 한다.Sound pressure means a change in air pressure from atmospheric pressure (1 atm = 1,013 mbar). Minimum audible value of 1 kHz plane wave sound based on normal human hearing

=

The smallest human audible sound for μbar is called the 'reference sound pressure'.

[dB]Sound pressure level (SPL) is

[dB]

μbar), P는 측정 대상 음압이며, 음압 레벨은 데시벨(dB)의 단위로 표시된다.However, Po is the reference sound pressure (

μbar), P is the target sound pressure, and the sound pressure level is expressed in decibels (dB).

As the related prior art 1, in Patent Registration No. 10-1928561, "IPA speaker system with built-in rechargeable power supply using the PPI method" is registered.

Disclosed is an IP speaker system with built-in rechargeable power built-in amplifier using PoE (Power over Ethernet) method. The amplifier built-in IP speaker system has a built-in battery charging system in an amplifier built-in IP speaker connected to a UTP (CAT5) line, a DC-DC converter power supply, PoE Ethernet module, wireless communication unit (Wi-Fi, Bluetooth), CPU and DSP/volume control Equipped with a sub/equalizer control unit (sound source control board), an amplifier, and one or more high-power speakers,

The amplifier built-in IP speaker receives digital audio data provided from the sound source server to the PoE Ethernet module through the IP network or receives it through the wireless communication unit and outputs it to the amplifier built-in IP speaker,

The audio source, power, and control signal transmitted by PoE method to the IP speaker with the built-in amplifier connected to the UTP (CAT5) line is received from the speaker. When the signal of the sound source is confirmed by the monitoring module of the CPU, the charging system is stopped, and the amplifier is operated with the charged power and the transmitted power to operate the speaker.

The amplifier built-in IP speaker is assigned an IP address,

The amplifier-built IP speaker may include: a PoE Ethernet module for receiving digital audio data from the sound source server through an IP network; PoE charging system in which rated voltage and current are charged by USB cable; a DC-DC converter connected to the PoE charging system and converting a DC voltage into a predetermined DC voltage; an audio ADC that A/D converts the analog audio signal provided through the analog audio signal input unit and provides it as a digital audio signal; a wireless communication unit (Wi-Fi, Bluetooth) that interworks with a smart device to receive digital sound data; CPU that provides each function of charging the built-in amplifier and outputting the audio signal; a DSP connected to the CPU and installed with a DSP program; a power on/off button connected to the DSP; a volume control unit for adjusting the volume level; an equalizer control unit for adjusting an equalizer level for each frequency band; an audio DAC that D/A converts digital audio signals to provide analog audio signals; and an amplifier (Amp) for amplifying the analog audio signal according to the previously adjusted volume level and the equalizer level for each frequency band; and a speaker connected to the amplifier and outputting an amplified analog audio signal.

As the related prior art 2, "fine dust notification broadcasting system" is registered in Patent Registration No. 10-1937091.

The fine dust notification broadcasting system includes an environment measuring unit installed in an arbitrary area to measure external environmental information, a multi-colored lighting module, and when the measured value of the environmental information transmitted from the environment measuring unit is greater than or equal to a certain value, Control to light the lighting module with a preset color, and to maintain or change the color according to the lighting of the lighting module when the measured value of the environmental information is changed to a certain value or more at the time of lighting on Fine dust notification device equipped with a module; a broadcast control server that receives the environmental information from the environmental measurement unit and generates a guide broadcast using the environmental information when the measured value of the environmental information is greater than or equal to a predetermined value; and a plurality of media output units installed in an arbitrary area and configured to receive and output the announcement from the broadcast control server, wherein the broadcast control server receives the environmental information from the environment measurement unit, When the measured value of the environmental information is greater than or equal to a predetermined value, a broadcast generation unit for generating a guide broadcast using the environment information, receiving the announcement from the broadcast generation unit, editing and controlling audio data of the announcement, It provides a fine dust notification broadcasting system comprising a mixing console for broadcasting that is formed to enable wired and wireless transmission.

Recently, fine dust of 10 μm or less is generated by Chinese yellow dust and smog (a state in which air pollutants such as fine dust, sulfur oxides and nitrogen oxides are mixed), automobile exhaust gas, and air pollution. . In particular, coal power plants emit a lot of sulfur oxides (SOx) and nitrogen oxides (NOx), and these substances generate ultrafine dust of 2.5 μm or less like exhaust gas.

However, the existing school broadcasting system is equipped with wired and wireless microphones, audio sources, controllers, audio mixers, equalizers, power amplifiers (P.A.), and speakers, but fine dust measurement sensors, air pollution sensors, fire detection sensors, smoke detection sensors, etc. It did not provide broadcast sound service in conjunction with the environmental sensor of

Recently, in order to reduce fine dust of 10㎛ or less generated by Chinese yellow dust and smog, automobile exhaust gas, air pollution, etc., and to reduce indoor pollution, the school broadcasting system is an air conditioner equipped with a duct air circulation device and air purification device. , the school broadcasting system that works in conjunction with the air purifier was not provided, and a system to reduce air pollution in classrooms and indoors in the school was not provided by interlocking the central control unit and sub broadcasting system in each school building.

Patent Registration No. 10-1928561 (Registration date December 06, 2018), "IPA speaker system with built-in amplifier with rechargeable power using PEF method", Youngmin Park Patent registration number 10-1937091 (registration date January 03, 2019), "Fine dust notification broadcasting system", Jong-han Lee

An object of the present invention to solve the above problems is that the school broadcasting system automatically turns on/off the air conditioner and air purifier through environmental sensor monitoring such as a fine dust sensor, a smoke sensor, a temperature sensor, and an air pollution sensor, It is possible to change the broadcasting state according to the concentration of fine dust and air pollutants of the sensor, and the school broadcasting system is linked with a central control unit, a plurality of independent devices, and school broadcasting equipment such as speakers, wired and wireless microphone broadcasting, local area A speaker matrix system using environmental sensor monitoring that transmits text to one or more independent devices using an IP address assigned for broadcasting and provides TTS-converted speaker output to the speakers of the device ID individually/groupwise/totally It provides a broadcasting system that can be linked with the equipped school broadcasting equipment.

In order to achieve the object of the present invention, a broadcasting system capable of interworking with school broadcasting equipment having a speaker matrix system using environmental sensor monitoring includes: an environmental sensor for detecting fire, detecting smoke, and measuring air pollution; It is connected to the environmental sensor, controls an air conditioner, an air purifier, and a temperature controller according to the measured sensor information, and transmits text to one or more independent devices for audio source broadcasting, wired/wireless microphone broadcasting, and local local broadcasting to one or more independent devices a central control unit for controlling TTS-converted speaker output through the receiver; a control tower matrix connected to the central control unit and the other end connected to an audio source, an air conditioner, an air purifier, and a temperature controller; and a plurality of independent devices connected to the central control device,

The environmental sensor includes a fire detection sensor, a smoke detection sensor, and an environmental sensor for measuring air pollution,

를 이용한 가스 센서를 사용하여 포름알데히드 가스를 감지하며, The environmental sensor for measuring air pollution uses an air pollution sensor using a gas sensor, and the air pollution sensor measures indoor air pollutants of carbon monoxide, carbon dioxide, and formaldehyde contained in air pollutants, The air pollution sensor is

Detects formaldehyde gas using a gas sensor using

An independent device connected to the central control device or one side is connected to the control tower matrix and the other side includes a plurality of independent devices connected to a plurality of speakers,

A plurality of independent devices connected to the central control device are i) interlocked with the central control device, ii) the independent device broadcasts itself,

The controller of the independent device compares the “input sound source” and the “output sound source” to determine whether the power amplifier operates normally, and the central control unit controls the power amplifier of each independent device (1,2,3,4). monitor

The environmental sensor uses one or more of a fine dust sensor, a fire sensor, a temperature sensor, a smoke sensor, and an air pollution sensor.

The central control device includes a plurality of independent devices to which IP addresses and device IDs are assigned, and an Ethernet connection unit that is individually connected to Ethernet using a UTP (CAT 5) cable.

The independent device includes an Ethernet connection unit, a controller that converts text to TTS and outputs it to a speaker of the device ID, and controls a wired/wireless microphone broadcast or audio source to be broadcast; an audio mixer coupled to the controller; one or more graphic equalizers connected to the audio mixer and an equalizer for adjusting a frequency level of an audio signal; at least one power amplifier (P.A.) connected to each graphic equalizer and amplifying the audio signal whose equalizer level has been adjusted; L/R speakers connected to each power amplifier (P.A.); and a power distributor for supplying system power.

The controller of the independent device further includes a TTS converter for converting the text transmitted from the central control device into an audio signal and outputting it to a speaker.

The broadcasting system capable of interworking with school broadcasting equipment equipped with a speaker matrix system using environmental sensor monitoring of the present invention is a school broadcasting system that monitors environmental sensors such as a fine dust sensor, a smoke sensor, a temperature sensor, and an air pollution sensor. Automatically turns on/off the air conditioner and air purifier through School broadcasting equipment is interlocked, and text is transmitted to one or more independent devices using an IP address assigned for wired/wireless microphone broadcasting and local area broadcasting of buildings in the school, individually/by group/totally through one or more independent devices A broadcasting system capable of interworking with school broadcasting equipment equipped with a speaker matrix system using environmental sensor monitoring, which provides TTS-converted speaker output to the speakers of the device ID, is provided.

Depending on the degree of air and indoor environmental pollution, when the concentration of fine dust or the corresponding air polluting gas exceeds the standard value, the air conditioner, air purifier and temperature controller are controlled to operate, and the main equipment (central control unit) and sub equipment (independent unit 1) ,2,3,4), the broadcasting is controlled, and the main equipment (central control unit) checks the failures and operating conditions of the power amplifiers and speakers of independent units in each local building, and provides audio equipment information to the central control unit Send them to be monitored. In addition, each independent device is capable of independent broadcasting without central control.

) 관측법[베타선 흡수법(β-ray Absorption Method)], 초미세먼지(

) 측정법(중량농도법)을 보인 그림이다.
도 5는 미세먼지 측정 센서와 공기 오염 측정 센서의 환경 센서의 모니터링 화면이다. 1 is a configuration diagram of an existing acoustic device system.
2 is a configuration diagram of a broadcasting system capable of interworking with school broadcasting equipment having a speaker matrix system using environmental sensor monitoring according to the present invention.
3 is a diagram illustrating a connection configuration between school broadcasting equipment and a speaker of an independent device (school broadcasting system) connected to a central control unit in a school broadcasting system.
4 shows fine dust (

) observation method [β-ray absorption method], ultrafine dust (

) is a figure showing the measurement method (weight concentration method).
5 is a monitoring screen of the environmental sensor of the fine dust measurement sensor and the air pollution measurement sensor.

Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings, the configuration and operation of the invention. In the description of the present invention, if it is determined that a detailed description of a related known technology or a known configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted. In addition, when the accompanying drawing numbers indicate the same configuration, the same reference numbers are given in different drawings.

The broadcasting system capable of interworking with school broadcasting equipment equipped with a speaker matrix system using environmental sensor monitoring of the present invention is a school broadcasting system that monitors environmental sensors such as a fine dust sensor, a smoke sensor, a temperature sensor, and an air pollution sensor. Automatically turns on/off the air conditioner and air purifier through School broadcasting equipment is interlocked, and text is transmitted to one or more independent devices using an IP address assigned for wired/wireless microphone broadcasting, local area broadcasting of buildings in the school, individually/group by group/totally through one or more independent devices Provides TTS-converted speaker output to the speakers of the device ID.

2 is a configuration diagram of a broadcasting system capable of interworking with school broadcasting equipment having a speaker matrix system using environmental sensor monitoring according to the present invention.

Characteristics of a broadcasting system that can be linked with school broadcasting equipment equipped with a speaker matrix system using environmental sensor monitoring

* One central control unit and multiple independent units connected with environmental sensors

* Environmental sensors: fine dust measurement sensor, fire detection sensor, temperature sensor, smoke detection sensor, air pollution measurement sensor

* Conversion of broadcasting status according to the concentration of fine dust in the environmental sensor

* The independent device (school broadcasting system) provided in each building in the school is connected to the school broadcasting equipment, audio control matrix and speakers

* Automatic operation and broadcasting of air conditioning system by monitoring the environmental condition of each class

* When the broadcasting area changes, it is easily changed to the input/output network composed of the speaker matrix

* When the output is abnormal, it is converted to the normal output composed of the speaker matrix.

* Emergency status indication and automatic broadcasting system

* Interlocks with the local broadcast of an independent device linked to the main broadcast of the central control device, and the independent device can broadcast itself

* In the school broadcasting system, centralized control and broadcasting based on measurement data detected by environmental sensors monitored in classrooms and separate spaces

* PoE based Ethernet using UTP (CAT 5) cable

* Central Control Unit -> Independent Unit (TTS Conversion Unit) -> TTS Conversion Speaker Output

The central control unit turns on the HVAC system's air conditioner and air purifier through automatic ON/OFF control when the measurement data of fine dust concentration, temperature, and air pollution exceeds the standard value, circulates the indoor air, and controls the indoor air to be kept clean. .

2 is a configuration diagram of a broadcasting system capable of interworking with school broadcasting equipment having a speaker matrix system using environmental sensor monitoring according to the present invention.

A broadcasting system that can be linked with school broadcasting equipment equipped with a speaker matrix system using environmental sensor monitoring

an environmental sensor 701 for measuring fine dust concentration, fire detection, temperature, smoke detection, and air pollution;

It is connected to the environmental sensor, controls the air conditioner, air purifier, and temperature controller according to the measured sensor information, and broadcasts audio sources such as CD/Tuner/MP3 player/Internet media server, wired/wireless microphone broadcast, and local area of buildings in the school. A central control device that transmits text to one or more independent devices using an IP address allocated for broadcasting, and controls TTS conversion speaker output to the speakers of the device ID individually/by group/totally through one or more independent devices (702);

a control tower matrix 703 connected to the central control unit 702 and the other side connected to an audio source, an air conditioner, an air purifier, and a temperature controller;

One or more independent devices (710, 720, 730, 770) connected to the central control device (702) or a plurality of independent devices (710, 720, 730, 770) connected to the control tower matrix (703) and the other side connected to a plurality of speakers ,

The environmental sensor includes a fire detection sensor, a smoke detection sensor, and an environmental sensor for measuring air pollution,

를 이용한 가스 센서를 사용하여 포름알데히드 가스를 감지하고, The environmental sensor for measuring air pollution uses an air pollution sensor using a gas sensor, and the air pollution sensor measures indoor air pollutants of carbon monoxide, carbon dioxide, and formaldehyde contained in air pollutants, The air pollution sensor is

Detect formaldehyde gas using a gas sensor using

An independent device or one side connected to the central control unit 702 is connected to the control tower matrix 703 and the other side includes a plurality of independent devices (710, 720, 730, 770) connected to a plurality of speakers,

A plurality of independent devices (710, 720, 730, 770) connected to the central control device 702 are i) interlocked with the central control device, ii) the independent device performs its own broadcasting,

The controller of the independent devices 710, 720, 730, and 770 compares the “input sound source” and the “output sound source” to determine whether the power amplifier operates normally, and the central control unit controls each independent device (1,2, 3, 4). monitor the power amplifier.

The independent devices 710 , 720 , 730 , and 770 use a public address system or school broadcasting equipment of a school broadcasting system and are connected to an audio control matrix and speakers.

The central control device includes a plurality of independent devices to which IP addresses and device IDs are assigned, and an Ethernet connection unit that is individually connected to Ethernet using a UTP (CAT 5) cable.

The central control device turns on the air conditioner and the air purifier through automatic ON/OFF control when the fine dust concentration, temperature, and air pollution measurement data exceed the standard values, and filters fine dust through the filter of the air purifier to provide clean indoor air circulate and keep the indoor air clean.

An air conditioner is an air conditioning system (Heating Ventilation and Air Conditioning, HVAC) and includes an air conditioning unit (AHU) for heating, ventilation, and air conditioning. Air conditioning equipment is operated by automatic control equipment, has heating and cooling equipment, heating coil, cooling coil, humidifier, and air filter (air filter), and automatic control equipment of the air conditioner is installed between the air conditioner of the HVAC system and the indoor space. When driven, a blower and a fan are further provided in the duct, which is an air ventilation passage for circulating air or introducing outside air. Clean indoor air is maintained to maintain temperature, humidity, airflow, and cleanliness, which are the four major factors of air conditioning.

When the air conditioner is driven (the air conditioner is turned on), the duct ventilation device and air purifier are operated to maintain clean air in the room, or the air purifier is operated (air purifier is turned on).

Air purifiers are basically equipped with filters to filter out fine dust.

The controller of the independent device compares "input sound source" and "output sound source" to determine whether the power amplifier operates normally.

The central control unit transmits audio data collected as input and output sources to the central center or management system to monitor the power amplifier (P.A.) of each independent unit (1,2,3,4) to MP3, MPEG4 AAC codec, etc. It uses an audio codec that is compressed and restored by

The environment sensor 701 uses one or more of a fine dust sensor, a fire sensor, a temperature sensor, a smoke sensor, and an air pollution sensor.

)와 2.5㎛ 이하의 초미세먼지(

)로 구분되며, 미세먼지 농도(

)는 단위 부피 세제곱미터(

)당 질량(μg)으로 표시된다. For reference, according to the basic data of the Ministry of Environment and the National Academy of Environmental Sciences, fine dust is 10㎛ or less (

) and ultrafine dust of 2.5㎛ or less (

), and the concentration of fine dust (

) is the unit volume cubic meter (

) per mass (μg).

) 관측법[베타선 흡수법(β-ray Absorption Method)], 초미세먼지(

) 측정법(중량농도법)을 보인 그림이다. 4 shows fine dust (

) observation method [β-ray absorption method], ultrafine dust (

) is a figure showing the measurement method (weight concentration method).

5 is a monitoring screen of the environmental sensor of the fine dust measurement sensor and the air pollution measurement sensor.

) 관측 기술은 베타선 흡수법(β-ray Absorption Method)을 사용한다. 베타선 흡수법은 방사선의 한 종류인 베타선의 물리적 특성을 이용하여 미세먼지를 간접적으로 측정하는 방법이다. 베타선은 방사선의 한 종류이며, 어떤 물질을 통과할 때 그 물질의 질량이 클수록 더 많이 흡수되는 성질을 가진다. 이러한 성질을 이용하여 미세먼지를 채취한 테이프 여과지에 베타선을 쪼이고, 감지기에서는 줄어든 베타선의 차이를 측정한 후, 측정된 값을 바탕으로 미세먼지 농도를 측정한다. fine dust(

) Observation technique uses the beta-ray absorption method. The beta-ray absorption method is a method to indirectly measure fine dust by using the physical properties of beta-rays, a type of radiation. Beta rays are a type of radiation, and when passing through a material, the greater the mass of the material, the more it is absorbed. Using this property, beta-rays are applied to a tape filter paper from which fine dust is collected, and the sensor measures the difference in the reduced beta-rays, and then measures the concentration of fine dust based on the measured values.

)를 관측 기술은 미세먼지의 질량을 직접적으로 측정하는 중량농도법을 사용한다. 중량농도법은 충돌판에서 일정 크기 이상의 미세먼지를 제거한 후 초미세먼지(

)를 하루 동안 여과지에 채취한 후 직접 질량을 측정하는 방식을 사용한다.ultra-fine dust (

), the observation technique uses the gravimetric concentration method that directly measures the mass of fine dust. The weight concentration method removes fine dust of a certain size or more from the collision plate and then removes ultra-fine dust (

) is collected on a filter paper for one day and then the mass is directly measured.

The fine dust sensor uses the principle of measuring the amount of light scattered by colliding with dust. Therefore, the intensity of the light of the light receiving part is measured and the amount of light is measured. When a lot of light is detected, the concentration of fine dust is low.

The air pollution measurement sensor uses an environmental sensor such as a gas sensor, and measures indoor air pollutants such as carbon monoxide, carbon dioxide, and formaldehyde contained in air pollutants.

를 이용한 가스 센서를 사용하여 포름알데히드 가스를 감지할 수 있다. air pollution sensor

Formaldehyde gas can be detected using a gas sensor using

For example, if the environmental sensor uses a fine dust sensor and an air pollution sensor, if the concentration of fine dust or air pollutants with harmful components is higher than the reference value, the control of the central control unit connected to the environmental sensor of the building in the measurement area is applied. Depending on the operation of the air conditioner (air conditioner ON), the ventilation device and air purification device of the duct are operated to maintain clean air in the room, or the air cleaner is operated (ON). The air purifier filters out fine dust of 10㎛ or less through a filter, provides a cleaning function for carbon monoxide, carbon dioxide, nitrogen dioxide, volatile organic compounds (TVOC), etc., and circulates the indoor air cleanly.

3 is a diagram illustrating a connection configuration between school broadcasting equipment and a speaker of an independent device (school broadcasting system) connected to a central control unit in a school broadcasting system.

), 온도(℃), 공기 오염 측정 데이터가 일정 기준치를 초과하면 자동 ON/OFF 제어를 통해 공조기 ON과 공기청정기 ON시켜, 실내 공기를 순환하게 하고 실내 공기를 청정하게 유지되도록 한다. The central control unit controls the fine dust concentration (

), temperature (℃), and air pollution measurement data exceed a certain threshold, the air conditioner and air purifier are turned on through automatic ON/OFF control to circulate the indoor air and keep the indoor air clean.

The independent device connected to the central control unit is i) interlocked with the central control unit, and ii) the independent unit performs its own broadcasting.

The independent device interworks with school broadcasting equipment and speakers of the school broadcasting system.

The independent device is

It has an Ethernet connection, converts the text transmitted from the central control device or the text input from the control PC connected to the independent device to TTS and controls it to output to the speaker of the device ID, and controls to broadcast wired/wireless microphone broadcasting or audio source controller;

an audio mixer coupled to the controller;

one or more graphic equalizers connected to the audio mixer and an equalizer for adjusting a frequency level of an audio signal;

at least one power amplifier (P.A.) connected to each graphic equalizer and amplifying the audio signal whose equalizer level has been adjusted;

L/R speakers connected to each power amplifier (P.A.); and

Includes a Power Distributor that supplies system power.

The controller of the independent device compares the "input sound source" and the "output sound source" to determine whether the power amplifier operates normally.

The central control unit can monitor the power amplifier (P.A.) of each independent unit (1,2,3,4) to the central center or management system, and the audio data collected as input and output sources to MP3, MPEG4 AAC codec, etc. It uses an audio codec that compresses and restores using .

The controller of the independent device further includes a TTS converter configured to TTS-convert the text transmitted from the central control device or the text input from the control PC connected to the independent device, and output the converted audio signal to the speaker of the device ID.

When text is transmitted from the central control device to an independent device provided in each building in the school, the TTS converter provided in the controller converts the text to TTS (Text To Speech) according to the control of the controller of the independent device to generate the text-converted audio signal. Make it output to the speaker of the device ID.

The school broadcasting system detects the fine dust concentration in each classroom and local building and the environmental condition of air pollutants through the environmental sensor. As an independent device of the school broadcaster, it spreads to the surrounding area. Accordingly, if there is a problem in the broadcasting line or if the broadcasting is not performed due to an error in the broadcasting system, it detects the broadcasting input signal and output signal of the broadcasting input signal and automatically guides the problematic line to the normal path broadcasting with a matrix system. This provides smooth broadcasting.

Depending on the degree of air and indoor environmental pollution, if the concentration of fine dust or the standard value of air pollutant gas contained in the indoor air is exceeded, the air conditioner, air purifier and temperature controller are controlled to operate, and the main equipment (central control unit) Broadcasting is controlled by dividing into and sub equipment (independent units 1, 2, 3, 4), and the main unit (central control unit) checks the failures and operating conditions of independent units’ power amplifiers and speakers in each local building. It transmits audio equipment information to the central control unit for monitoring. In addition, each independent device is capable of independent broadcasting without central control.

When a speaker line with a problem in broadcasting is identified by a sensor, it is converted to a normal matrix path.

The controller of the independent device compares the "input sound source" and the "output sound source" to determine whether the power amplifier operates normally.

The central control unit can monitor the power amplifier (P.A.) of each independent unit (1,2,3,4) to the central center or management system, and the audio data collected as input and output sources to MP3, MPEG4 AAC codec, etc. It uses an audio codec to compress and restore.

Although described with reference to a specific embodiment of the present invention, the present invention is not limited to the same configuration and operation as in the specific embodiment to illustrate the technical idea as described above, and within the limit that does not depart from the technical spirit and scope of the present invention It can be implemented with various modifications, and the scope of the present invention should be determined by the claims to be described later.

701: environmental sensor 702: central control unit
703: control tower matrix 704: audio source
707: air conditioner 708: air purifier
709: thermostat 711: monitoring PC
710,720,730,740,770: independent unit 712: L/R speaker
777: Audio Control Matrix 773: L/R Speakers

Claims (4)

environmental sensors to measure fire detection, smoke detection, and air pollution;
It is connected to the environmental sensor, controls an air conditioner, an air purifier, and a temperature controller according to the measured sensor information, and transmits text to one or more independent devices for audio source broadcasting, wired/wireless microphone broadcasting, and local local broadcasting to one or more independent devices a central control unit that controls the TTS-converted speaker output through the receiver;
a control tower matrix connected to the central control unit, and the other end connected to an audio source, an air conditioner, an air purifier, and a temperature controller;
a plurality of independent devices connected to the central control device;
The environmental sensor includes a fire detection sensor, a smoke detection sensor, and an environmental sensor for measuring air pollution,
The environmental sensor for measuring air pollution uses an air pollution sensor using a gas sensor, and the air pollution sensor measures indoor air pollutants of carbon monoxide, carbon dioxide, and formaldehyde contained in air pollutants, The air pollution sensor is

Detects formaldehyde gas using a gas sensor using
An independent device connected to the central control device or one side is connected to the control tower matrix and the other side includes a plurality of independent devices connected to a plurality of speakers,
A plurality of independent devices connected to the central control device are i) interlocked with the central control device, ii) the independent device broadcasts itself,
The controller of the independent device compares the “input sound source” and the “output sound source” to determine whether the power amplifier operates normally, and the central control unit controls the power amplifier of each independent device (1,2,3,4). A broadcasting system capable of interworking with school broadcasting equipment equipped with a speaker matrix system using environmental sensor monitoring to monitor According to claim 1,
The central control device is equipped with a speaker matrix system using environmental sensor monitoring, which includes a plurality of independent devices to which IP addresses and device IDs are assigned and an Ethernet connection that is individually connected to Ethernet using a UTP (CAT 5) cable. A broadcasting system that can be linked with school broadcasting equipment. According to claim 1,
The independent device is
a controller having an Ethernet connection unit, converting text to TTS and outputting it to a speaker of a corresponding device ID, and controlling a wired/wireless microphone broadcast or audio source to be broadcast;
an audio mixer coupled to the controller;
one or more graphic equalizers connected to the audio mixer and an equalizer for adjusting a frequency level of an audio signal;
at least one power amplifier (PA) connected to each graphic equalizer and amplifying the audio signal whose equalizer level has been adjusted;
L/R speakers connected to each power amplifier (PA); and
a power distributor that supplies power to the system;
A broadcasting system capable of interworking with school broadcasting equipment having a speaker matrix system using environmental sensor monitoring, including a. delete

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