CN112153531A - Multifunctional electroacoustic interphone based on Bluetooth data transmission - Google Patents
Multifunctional electroacoustic interphone based on Bluetooth data transmission Download PDFInfo
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- CN112153531A CN112153531A CN202011023262.1A CN202011023262A CN112153531A CN 112153531 A CN112153531 A CN 112153531A CN 202011023262 A CN202011023262 A CN 202011023262A CN 112153531 A CN112153531 A CN 112153531A
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 25
- 230000003321 amplification Effects 0.000 claims abstract description 15
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 15
- 238000012545 processing Methods 0.000 claims abstract description 8
- 230000005236 sound signal Effects 0.000 claims abstract description 7
- 230000009467 reduction Effects 0.000 claims abstract description 4
- 230000035945 sensitivity Effects 0.000 claims abstract description 4
- 238000005516 engineering process Methods 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- 230000003993 interaction Effects 0.000 claims description 3
- 238000004891 communication Methods 0.000 description 5
- 230000006870 function Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 230000008447 perception Effects 0.000 description 1
- 230000035790 physiological processes and functions Effects 0.000 description 1
- 230000000241 respiratory effect Effects 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000012549 training Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
- H04B5/40—Near-field transmission systems, e.g. inductive or capacitive transmission systems characterised by components specially adapted for near-field transmission
- H04B5/48—Transceivers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
- H04B5/70—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes
- H04B5/72—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes for local intradevice communication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/80—Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/14—Direct-mode setup
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Transceivers (AREA)
Abstract
The invention provides a multifunctional electroacoustic interphone based on Bluetooth data transmission, which comprises: a temperature pressure sensor: providing pressure output and temperature output, integrating a noise reduction processing module inside to realize anti-interference capability and integrating a high-precision temperature sensor, and generating a digital signal after calibration and temperature compensation by performing digital compensation on offset, sensitivity, temperature drift and nonlinearity of the sensor; the main control circuit: collecting and processing digital signals of the temperature and pressure sensor; a Bluetooth module: the BLE connection is used for completing data transparent transmission; the audio frequency amplifying circuit: the sound amplification is realized by collecting the sound pick-up audio signal and driving the loudspeaker through the audio amplification circuit. The invention can not only complete the sound amplifying function, but also sense the vital signs of the personnel wearing the mask to carry out the dangerous operation in real time, so that the command terminal can control the working state of the personnel wearing the mask to carry out the dangerous operation in real time.
Description
Technical Field
The invention relates to the technical field of data transmission, in particular to a multifunctional electroacoustic interphone based on Bluetooth data transmission. Especially, relate to a small-size integration electroacoustic public address and bluetooth data wireless transmission system, belong to audio frequency and enlarge and bluetooth wireless transmission technical field.
Background
The existing electroacoustic interphone is combined with the gas mask for use, is suitable for personnel wearing the gas mask to execute combat missions, compensates attenuation of voice pressure level and speech definition caused by a gas mask cavity and a communication membrane when performing exercise training and handling emergencies, and can remarkably enhance voice communication capacity after the personnel wear the electroacoustic interphone. And the physical condition and the life state of the operator cannot be accurately sensed in real time only through voice communication when the emergency situation is executed. And increase pressure and temperature sensor and gather the temperature and the respiratory pressure who wears the mask personnel on the basis of public address, come perception personnel's physiological state through bluetooth data wireless transmission to receiving terminal.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a multifunctional electroacoustic interphone based on Bluetooth data transmission.
The invention provides a multifunctional electroacoustic interphone based on Bluetooth data transmission, which comprises:
a temperature pressure sensor: providing pressure output and temperature output, integrating a noise reduction processing module inside to realize anti-interference capability and integrating a high-precision temperature sensor, and generating a digital signal after calibration and temperature compensation by performing digital compensation on offset, sensitivity, temperature drift and nonlinearity of the sensor;
the main control circuit: collecting and processing digital signals of the temperature and pressure sensor;
a Bluetooth module: the BLE connection is used for completing data transparent transmission;
the audio frequency amplifying circuit: the sound amplification is realized by collecting the sound pick-up audio signal and driving the loudspeaker through the audio amplification circuit.
Preferably, the main control chip of the main control circuit adopts an EFM32LG series single chip microcomputer.
Preferably, the bluetooth module adopts a CSR8670 series bluetooth low energy module.
Preferably, the bluetooth module:
after the system is powered on, the Bluetooth modules are paired by inquiring the MAC addresses of the Bluetooth receiving terminals, and after pairing is successful, a link is established between the Bluetooth modules;
the master control circuit collects digital signals of the temperature and pressure sensors in real time through the master control chip, data interaction is carried out between the master control chip and the Bluetooth modules through UART ports of the master control chip, and then data transmission is achieved between the Bluetooth modules through a Bluetooth wireless frequency hopping technology.
Preferably, the audio amplification circuit:
the sound amplification is realized by the audio amplification principle, namely, the audio signal sent by the front stage is output with enough power through an amplifying circuit, a filtering circuit and the like to drive a loudspeaker to emit sound.
Compared with the prior art, the invention has the following beneficial effects:
the invention can not only complete the sound amplifying function, but also sense the vital signs of the personnel wearing the mask to carry out the dangerous operation in real time, so that the command terminal can control the working state of the personnel wearing the mask to carry out the dangerous operation in real time.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
fig. 1 is a schematic view of a communication system structure provided in the present invention.
Fig. 2 is a schematic block diagram of the system provided by the present invention.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention. All falling within the scope of the present invention.
The present invention will be described more specifically with reference to examples.
Example (b):
as shown in fig. 1, the intercom system mainly includes a temperature/pressure sensor, a sound pickup, a speaker, a main control circuit, a bluetooth module, an audio amplifier circuit, and the like. The system composition block diagram is shown in fig. 1.
Wherein temperature pressure sensor (U1) chooses a novel integrated atmospheric pressure of a section, high accuracy pressure sensor for use, and this sensor can provide pressure output and can provide temperature output again, has the reliability height, advantages such as the uniformity is good. A noise reduction processing module is integrated in the sensor, so that the sensor has strong anti-interference capability and other performances, a high-precision temperature sensor is integrated, and a digital signal after calibration and temperature compensation is generated by performing digital compensation on the offset, sensitivity, temperature drift and nonlinearity of the sensor. Pressure range: 0-10kPa, the resolution ratio is 1Pa, and the requirement of the breathing pressure index can be met; the temperature range is-40 ℃ to 85 ℃, and the precision is 0.5 ℃.
The main control circuit mainly has the functions of collecting and processing digital signals of the temperature and pressure sensor (U1), and the main control chip adopts an EFM32LG series single chip microcomputer (U2).
The Bluetooth module adopts a CSR8670 series low-power consumption Bluetooth module (U3), and is mainly used for BLE connection to complete data transparent transmission.
The audio amplification circuit collects the audio signals of the sound pick-up and drives the loudspeaker to amplify the sound through the audio amplification circuit (U4). A schematic block diagram of the system is shown in fig. 2.
The working principle is as follows:
1. the principle of Bluetooth data transmission: after the system is powered on, the Bluetooth modules are paired by inquiring the MAC addresses of the Bluetooth receiving terminals, and after pairing is successful, a link is established between the Bluetooth modules. The master control circuit collects digital signals of the temperature and pressure sensors in real time through the master control chip, data interaction is carried out between the master control chip and the Bluetooth modules through UART ports of the master control chip, and then data transmission is achieved between the Bluetooth modules through a Bluetooth wireless frequency hopping technology.
2. Sound amplification: the sound amplifying function of the electroacoustic interphone is mainly realized by an audio amplifying principle. The basic principle of audio amplification is to output sufficient power to drive a loudspeaker to emit sound by an audio signal sent from a front stage through an amplifying circuit, a filtering circuit and the like.
The technical scheme of the invention can solve the following technical problems:
a) after the gas mask is worn, the voice communication is carried out with adjacent team members, and due to the sealing and isolating effect of the gas mask, the speaking voice is shielded, and the adjacent team members cannot clearly hear the speaking voice.
b) The Bluetooth data transmission function: gather and breathe minute pressure and temperature signal, realize the data transmission with the terminal through the bluetooth.
In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.
Those skilled in the art will appreciate that, in addition to implementing the systems, apparatus, and various modules thereof provided by the present invention in purely computer readable program code, the same procedures can be implemented entirely by logically programming method steps such that the systems, apparatus, and various modules thereof are provided in the form of logic gates, switches, application specific integrated circuits, programmable logic controllers, embedded microcontrollers and the like. Therefore, the system, the device and the modules thereof provided by the present invention can be considered as a hardware component, and the modules included in the system, the device and the modules thereof for implementing various programs can also be considered as structures in the hardware component; modules for performing various functions may also be considered to be both software programs for performing the methods and structures within hardware components.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (5)
1. The utility model provides a multi-functional electroacoustic talker based on bluetooth data transmission which characterized in that includes:
a temperature pressure sensor: providing pressure output and temperature output, integrating a noise reduction processing module inside to realize anti-interference capability and integrating a high-precision temperature sensor, and generating a digital signal after calibration and temperature compensation by performing digital compensation on offset, sensitivity, temperature drift and nonlinearity of the sensor;
the main control circuit: collecting and processing digital signals of the temperature and pressure sensor;
a Bluetooth module: the BLE connection is used for completing data transparent transmission;
the audio frequency amplifying circuit: the sound amplification is realized by collecting the sound pick-up audio signal and driving the loudspeaker through the audio amplification circuit.
2. The multifunctional electroacoustic communicator based on bluetooth data transmission as claimed in claim 1, wherein the main control chip of the main control circuit is an EFM32LG series single chip microcomputer.
3. The multifunctional electro-acoustic communicator based on Bluetooth data transmission is characterized in that the Bluetooth module adopts a CSR8670 series Bluetooth Low energy module.
4. The multifunctional electro-acoustic communicator based on bluetooth data transmission, according to claim 1, wherein the bluetooth module:
after the system is powered on, the Bluetooth modules are paired by inquiring the MAC addresses of the Bluetooth receiving terminals, and after pairing is successful, a link is established between the Bluetooth modules;
the master control circuit collects digital signals of the temperature and pressure sensors in real time through the master control chip, data interaction is carried out between the master control chip and the Bluetooth modules through UART ports of the master control chip, and then data transmission is achieved between the Bluetooth modules through a Bluetooth wireless frequency hopping technology.
5. The multifunctional electro-acoustic communicator based on bluetooth data transmission according to claim 1, wherein the audio amplifying circuit:
the sound amplification is realized by the audio amplification principle, namely, the audio signal sent by the front stage is output with enough power through an amplifying circuit, a filtering circuit and the like to drive a loudspeaker to emit sound.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011023262.1A CN112153531A (en) | 2020-09-25 | 2020-09-25 | Multifunctional electroacoustic interphone based on Bluetooth data transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011023262.1A CN112153531A (en) | 2020-09-25 | 2020-09-25 | Multifunctional electroacoustic interphone based on Bluetooth data transmission |
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| CN112153531A true CN112153531A (en) | 2020-12-29 |
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| CN202011023262.1A Pending CN112153531A (en) | 2020-09-25 | 2020-09-25 | Multifunctional electroacoustic interphone based on Bluetooth data transmission |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114842622A (en) * | 2022-04-19 | 2022-08-02 | 湖北华强科技股份有限公司 | Multifunctional electroacoustic calling device and using method |
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| US20150090257A1 (en) * | 2013-09-27 | 2015-04-02 | Honeywell International Inc. | Mask including integrated sound conduction for alert notification in high-noise environments |
| CN104886861A (en) * | 2014-03-06 | 2015-09-09 | 上海维琴科技有限公司 | Mine safety helmet |
| CN205850030U (en) * | 2016-06-11 | 2017-01-04 | 艾阳恩安防设备（上海）有限公司 | A kind of taper communication face shield |
| US20190150546A1 (en) * | 2016-06-23 | 2019-05-23 | 3M Innovative Properties Company | Retrofit sensor module for a protective head top |
| US20190175960A1 (en) * | 2016-06-23 | 2019-06-13 | 3M Innovative Properties Company | Hearing protector with positional and sound monitoring sensors for proactive sound hazard avoidance |
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2020
- 2020-09-25 CN CN202011023262.1A patent/CN112153531A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140261405A1 (en) * | 2013-03-12 | 2014-09-18 | Marco Tekelenburg | Facepiece with noise reduction for communication |
| US20150090257A1 (en) * | 2013-09-27 | 2015-04-02 | Honeywell International Inc. | Mask including integrated sound conduction for alert notification in high-noise environments |
| CN104886861A (en) * | 2014-03-06 | 2015-09-09 | 上海维琴科技有限公司 | Mine safety helmet |
| CN104363551A (en) * | 2014-10-30 | 2015-02-18 | 陕西烽火宏声科技有限责任公司 | Wireless interphone of antigas mask |
| CN205850030U (en) * | 2016-06-11 | 2017-01-04 | 艾阳恩安防设备（上海）有限公司 | A kind of taper communication face shield |
| US20190150546A1 (en) * | 2016-06-23 | 2019-05-23 | 3M Innovative Properties Company | Retrofit sensor module for a protective head top |
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Application publication date: 20201229 |
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