KR20210155792A - Speaker system by using an air pollution detection sensor and HVAC equipment - Google Patents

Abstract

Disclosed are a speaker system using an air pollution detection sensor and a HVAC system. The speaker system comprises: an environmental sensor for measuring a fine dust concentration and air pollution; a central control unit connected to the environmental sensor, and for controlling an air conditioner, an air purifier, and the temperature controller of the HVAC system according to measured sensor information, performing control so that an emergency situation is displayed and broadcast, providing audio source broadcasting, wired and wireless microphone broadcasting, and local area broadcasting, and performing control so that an audio signal is output to the speakers of a corresponding device ID of a corresponding independent device ID individually/by group/wholely; a control tower matrix connected to the central control unit, and having the other side connected to an audio source, the air conditioner, the air purifier, and the temperature controller; and a plurality of independent devices having one side connected to the control tower matrix and the other end connected to a plurality of speakers. Therefore, the air conditioner and the air purifier can be automatically turned on/off through environmental sensor monitoring.

Description

TECHNICAL FIELD [0002] Speaker system by using an air pollution detection sensor and HVAC equipment

The present invention relates to a speaker system using an air pollution sensor and an air conditioner, which drives an air conditioner including an air conditioner and an air purifier based on an air pollution measurement sensor, and provides speaker broadcasting according to the air pollution. It relates to a speaker system using a measurement sensor and an air conditioner.

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 or more wireless receivers 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.

The speaker includes a dynamic type, an electromagnetic type, an electrostatic type, a dielectric type, and a magnetostrictive type speaker according to a method of converting an electrical signal into a sound wave. Dynamic speakers with good performance are widely used for music reproduction or voice communication.

A dynamic speaker uses the principle that when a voice 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.

The electromagnetic speaker vibrates the iron piece between the coils by flowing a negative current to the coil installed at the end of the permanent magnet, and this vibration is transmitted to the diaphragm through the lever to produce sound. Its use is gradually decreasing due to its poor high-frequency characteristics and a lot of distortion.

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

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 to 8000 Hz, and music at 30 to 15,000 Hz by 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). The minimum audible value of the sound of a plane wave at 1 kHz based on normal human hearing Po =

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 has a wired and wireless microphone, an audio source, a controller, an audio mixer, an equalizer, a power amplifier (PA), and speakers, but a fine dust sensor, an air pollution sensor, a fire detection sensor, a smoke sensor, etc. It did not provide broadcast sound service in conjunction with the environmental sensor of

Recently, fine dust of 10 μm or less generated by Chinese yellow dust and smog (a state in which smoke and mist are mixed with air pollutants such as fine dust, sulfur oxides and nitrogen oxides), automobile exhaust gas, and air pollution has been reduced. In order to reduce indoor pollution, the school broadcasting system did not provide the school broadcasting system that operates in conjunction with the air conditioner and air purifier equipped with the duct air circulation device and air purification device. The system did not provide a system to reduce air pollution in classrooms and indoor spaces in the school.

Patent Registration No. 10-1928561 (Registration date December 06, 2018), "IPA speaker system with built-in rechargeable power amplifier using PoE method", Park Young-min 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 fine dust measurement sensor and air pollution measurement sensor, and reduces the concentration of fine dust and air pollutants. It is possible to change the broadcasting state according to the concentration, and the school broadcasting system is interlocked with a central control device and a plurality of independent devices and school broadcasting equipment such as speakers, or consists of an independent device itself, and provides wired and wireless microphone broadcasting and local area broadcasting. A speaker using an air pollution measurement sensor and an air conditioning device that transmits text to one or more independent devices using an IP address assigned to provide the system.

In order to achieve the object of the present invention, a speaker system using an air pollution measuring sensor and an air conditioner includes: an environmental sensor for measuring fine dust concentration and air pollutants; It is connected to the environmental sensor, controls the temperature controller of the air conditioner, air purifier, and HVAC system according to the measured sensor information, controls to display and broadcast emergency status, and provides audio source broadcasting, wired/wireless microphone broadcasting, local area broadcasting, and individually a central control unit controlling to output an audio signal to the speakers of the corresponding device ID of the corresponding independent device ID in/group by group/total; 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 of an HVAC system; and a plurality of independent devices having one side connected to the control tower matrix and the other side connected to a plurality of speakers,

The central control unit 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 has an Ethernet connection, and the independent device is connected to the central control device or uses the school broadcasting equipment of a public address system or a school broadcasting system by itself, and controls the control for wired and wireless microphone broadcasting and audio source broadcasting. connected to the tower matrix and speakers,

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 (PA);

The environmental sensor uses an air pollution measurement sensor and a fire detection sensor,

The air pollution measurement sensor uses a gas sensor, and measures indoor air pollutants of carbon monoxide, carbon dioxide, and formaldehyde contained in the air pollutants,

를 이용한 가스 센서를 사용하여 포름알데히드 가스를 감지한다. The air pollution sensor is

Detect formaldehyde gas using a gas sensor using

The environmental sensor further includes a temperature sensor and a humidity 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 control tower matrix operates in connection with an air conditioner, an air purifier, and a thermostat of an HVAC system.

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 coupled to the audio mixer 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.

In the speaker system using the air pollution sensor and air conditioning device of the present invention, the school broadcasting system automatically turns on the air conditioner and the air purifier through environmental sensors such as a fine dust sensor, a smoke sensor, a temperature sensor, and an air pollution sensor. /OFF, it is possible to change the broadcasting status according to the concentration of fine dust and air pollutants of the environmental sensor Consists of an independent device itself, and transmits text 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/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 that outputs TTS-converted voice signals to the speakers of the device ID has been provided.

If the concentration of fine dust or air polluting gas exceeds the respective standard values according to the degree of air and indoor environmental pollution, the HVAC system's air conditioner, air purifier and temperature controller are controlled to operate, and the main equipment (central control unit) and sub equipment Broadcasting is controlled by dividing into (independent units 1, 2, 3, 4), and the main equipment (central control unit) checks the failure and operation status of the independent unit’s power amplifier and speakers in each local building and sends it to the central control unit. It transmits audio device information so that it can 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 센서 등의 환경 센서의 모니터링 화면이다. 1 is a configuration diagram of an existing acoustic device system.
2 is a configuration diagram of a speaker system using an air pollution measuring sensor and an air conditioner 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 environmental sensors such as a fine dust measurement sensor and an 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 drawing numbers indicate the same configuration, the same reference numbers are assigned in different drawings.

The speaker system using the air pollution sensor and air conditioning device of the present invention is a school broadcasting system that communicates with the air conditioner and It automatically turns on/off the air purifier, and it is possible to change the broadcasting state according to the concentration of fine dust and air pollutants of the environmental sensor. are interlocked, or consist of an independent device itself, and transmit text to one or more independent devices using an IP address assigned for wired/wireless microphone broadcasting, local area broadcasting of buildings in the school, and individually/through one or more independent devices The TTS converted voice signal is output to the speakers of the device ID for each group/whole group.

Characteristics of speaker system using air pollution sensor and air conditioner

* 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

* Monitoring the environmental condition of each class to automatically operate and broadcast the air conditioning system

* 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

* Power over Ethernet (PoE) based Ethernet using UTP (CAT 5) cable

* Central control unit -> independent unit (TTS conversion unit) -> TTS converted voice signal speaker output of the device ID

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 speaker system using an air pollution measuring sensor and an air conditioner according to the present invention.

A speaker system using an air pollution sensor and an air conditioner

an environmental sensor 701 for measuring fine dust concentration, temperature, humidity, and air pollutants;

It is connected to the environmental sensor, controls the temperature controller of the air conditioner, air purifier, and HVAC system according to the measured sensor information, and controls to display and broadcast emergency status, and audio sources such as CD/Tuner/MP3 player/Internet media server Transmits text to one or more independent devices using assigned IP addresses for broadcasting, wired/wireless microphone broadcasting, and local area broadcasting of buildings in the school and a central control unit 702 for controlling to output the TTS-converted voice signal to the speakers of the corresponding independent device ID individually/by group/whole through one or more independent devices to the speaker of the corresponding device ID;

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 of the HVAC system;

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 central control unit 702 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 devices (710, 720, 730, 770) have an Ethernet connection,

The independent devices 710, 720, 730 and 770 are connected to the central control device 702 or use school broadcasting equipment of a public address system or a school broadcasting system by themselves, and include a control tower matrix 703 and a control tower matrix 703 for audio source broadcasting and wired/wireless microphone broadcasting. connected to the speakers,

The environmental sensor 701 uses one or more sensors of a fine dust measurement sensor and/or an air pollution measurement sensor, and a fire detection sensor,

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

를 이용한 가스 센서를 사용하여 포름알데히드 가스를 감지한다. The air pollution sensor is

Detect formaldehyde gas using a gas sensor using

The independent devices 710, 720, 730, and 770 are connected to the central control device 702 or use school broadcasting equipment of a public address system or a school broadcasting system by themselves, and control tower matrix for wired and wireless microphone broadcasting and audio source broadcasting. 703 and connected to the speakers.

The central control unit 702 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 unit 702 turns on the air conditioner and the air purifier through automatic ON/OFF control when the fine dust concentration, temperature, humidity, and air pollution measurement data exceed the reference values, and filters fine dust through the filter of the air purifier It circulates clean indoor air and keeps the indoor air clean.

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

When the air conditioner is driven (the air conditioner is turned on), the duct ventilation 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 the audio data collected as input and output sources to the central center or management system to the MP3, MPEG4 AAC codec, etc. so that the power amplifier (PA) of each independent device (1,2,3,4) can be monitored. It uses an audio codec that is compressed and restored by

The environment sensor 701 uses one or more of a fine dust measuring sensor and/or an air pollution measuring sensor.

The environmental sensor further includes a temperature sensor and a humidity 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 environmental sensors such as a fine dust measurement sensor and an 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 갖는다. 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 for indirectly measuring 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 irradiated to the 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 다음 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

) is collected on a filter paper for one day, and then the method of directly measuring the mass is used.

The fine dust sensor uses the principle of measuring the amount of light scattered by colliding with dust. Accordingly, the light intensity is measured by measuring the light intensity of the light receiving part, and when the amount of light is detected, the concentration of fine dust is lowered.

The air pollution measurement sensor uses 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, when the environmental sensor uses a fine dust sensor and an air pollution sensor, if the fine dust concentration or air pollutant gases of harmful components are higher than the respective reference values, the central control connected to the environmental sensor of the measuring area building In accordance with the control of the device, the air conditioner is operated (air conditioner ON) to operate the duct ventilation device and air purifier to maintain clean air in the room, or to operate the air purifier (air purifier ON). Air purifiers filter out fine dust of 10 μm or less through a filter, clean carbon monoxide, carbon dioxide, nitrogen dioxide, and volatile organic compounds, and circulate 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 devices 710 , 720 , 730 , and 770 connected to the central control device 702 perform i) interworking with the central control device and ii) the independent device itself broadcasts.

The independent devices 710 , 720 , 730 , and 770 are interlocked with school broadcasting equipment and speakers of the school broadcasting system.

The independent devices (710, 720, 730, 770) are

Equipped with an Ethernet connection, TTS-converted text transmitted from the central control device or text input from a control PC connected to an independent device to output TTS-converted voice signals to the speaker of the device ID, wired and wireless microphone broadcasting or audio a controller that controls to broadcast the source;

an audio mixer coupled to the controller;

one or more graphic equalizers coupled to the audio mixer 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 transmits the audio data collected as input and output sources to the central center or management system to the MP3, MPEG4 AAC codec, etc. so that the power amplifier (PA) of each independent device (1,2,3,4) can be monitored. It uses an audio codec that is compressed and restored by

The controller of the independent device further includes a TTS converter that 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 outputs 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.

When the environmental conditions of fine dust concentration and air pollutants in each classroom and local building exceed the standard values by the environmental sensor, the school broadcasting system is an independent device in each building under the control of the central control unit, and broadcasts to the surrounding area through school broadcasting. to spread Accordingly, if there is a problem in the broadcasting line or when 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, when the concentration of fine dust or the corresponding air polluting gas exceeds the respective standard values, an alarm is generated on the control PC and the air conditioner, air purifier and temperature controller are controlled to operate, and the main equipment (central control Device) and sub equipment (independent units 1, 2, 3, 4), the broadcasting is controlled, and the main unit (central control unit) checks whether the power amplifiers and speakers of independent units in each local building are faulty and the operation status to transmit audio device information to the central control device to be monitored. 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, and the central control unit controls the power amplifier (PA) of each independent device (1,2,3,4). ) is monitored.

The central control unit uses the central center or management system to monitor the power amplifier (PA) of each independent unit (1, 2, 3, 4). It uses an audio codec that is compressed and restored by

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 (3)

Environmental sensors that measure fine dust concentration and air pollutants;
It is connected to the environmental sensor, controls the temperature controller of the air conditioner, air purifier, and HVAC system according to the measured sensor information, controls to display and broadcast an emergency state, and provides audio source broadcasting, wired/wireless microphone broadcasting, and local area broadcasting, a central control unit controlling to output an audio signal to the speakers of the corresponding device ID of the corresponding independent device ID individually/by group/in total;
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 of an HVAC system;
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,
The central control unit 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 has an Ethernet connection, and the independent device is connected to the central control device or uses the school broadcasting equipment of a public address system or a school broadcasting system by itself, and the control tower for wired and wireless microphone broadcasting and audio source broadcasting connected to the matrix and speakers,
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 (PA);
The environmental sensor uses an air pollution measurement sensor and a fire detection sensor,
The air pollution measurement sensor uses a gas sensor, and measures indoor air pollutants of carbon monoxide, carbon dioxide, and formaldehyde contained in the air pollutants,
The air pollution sensor is

A speaker system using an air pollution measurement sensor and an air conditioner that detects formaldehyde gas using a gas sensor using According to claim 1,
The environmental sensor further comprises a temperature sensor and a humidity sensor, a speaker system using an air pollution measuring sensor and an air conditioner. According to claim 1,
The independent device is
a controller having an Ethernet connection, converting text to TTS, controlling to output an audio signal to a speaker of a corresponding device ID, and controlling wired/wireless microphone broadcasting or audio source broadcasting;
an audio mixer coupled to the controller;
one or more graphic equalizers coupled to the audio mixer 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 speaker system using an air pollution measurement sensor and an air conditioner comprising a.

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