CN104836876A - Air quality sensing suite based on smart phone audio interface - Google Patents
Air quality sensing suite based on smart phone audio interface Download PDFInfo
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- CN104836876A CN104836876A CN201510012578.3A CN201510012578A CN104836876A CN 104836876 A CN104836876 A CN 104836876A CN 201510012578 A CN201510012578 A CN 201510012578A CN 104836876 A CN104836876 A CN 104836876A
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Abstract
The invention discloses an air quality sensing suite based on a smart phone audio interface. The air quality sensing suite comprises a main control unit, an audio interface unit, an expansion interface unit, a data storage unit, a first sensing device, a second sensing device, and a smart phone. The smart phone can be used as the platform, and the cell phone APP can be used as the man-machine interaction interface, and then the environment sensing suite can be used in a cooperated way, and therefore the sensing of the air environment around the user can be realized. The smart phone audio interface can be used as the data interface, and the plug and play function can be realized. A air quality monitoring suite of the cell phone platform can be used to further reduce the power consumption, and the reduction of the costs for forming the whole air quality monitoring device can be facilitated. The expansion interface can be connected with the sensing device, and then the universality of the platform can be enhanced, and the higher expandability can be provided. The expansion interface unit can be used to support various different sensor modules, and then the application range of the platform can be improved.
Description
Technical field
The invention belongs to smart mobile phone accessory technical field, particularly relate to a kind of air quality perception external member based on smartphone audio frequency interface.
Background technology
Smart mobile phone, as the center of information transmit-receive, process, becomes the requisite free articles under passenger of consumer.For mobile phone plane plate accessory, portable power source, pad pasting, shell, earphone etc. have become the indispensable accessory of cellphone subscriber.
But, although present smart mobile phone is furnished with a series of transducer, do not possess the perceptional function to surrounding environment.Environment sensing external member based on smart mobile phone is positioned common cellphone user, take smart mobile phone as core, and mobile phone A PP is human-computer interaction interface, and supporting serial portable environment sensing module, as humiture, air quality (CO
2concentration), pernicious gas (PM2.5, formaldehyde, CO etc.).Be intended to make user can at any time, everywhere, random perception ambient parameters, make the life of people more healthy fine.
The market demand of audio interface should be the line control earphone of earphone the earliest.Earphone mouth can do a lot of thing, utilizes the audio interface of mobile phone, can remote control hardware, send signal instruction etc., mobile audio interface has unlimited application potential.
In order to get around the high entry fee of iOS mobile phone MFI, American-European manufacturer takes the lead in adopting audio port data communication to develop the data-interface of iOS and Android, extensive application in mobile healthy application, personal consumption electronic product.
Peripheral hardware based on mobile audio interface is researched and developed, by the direction that insider has an optimistic view of, and audio port data communication, realize audio port two-way communication, realize, with the communication of external equipment, based on the bidirectional data communication technology of Android audio interface, being combined with hardware and software and developing wide application space.
General audio port data communication package solves ios and android hardware interface development compatibling problem, current more application: the application such as miniature pos card reader, smart mobile phone sphygmomanometer and smart mobile phone blood glucose meter, as long as band audio port mobile communication terminal can use audio port data communication package.
Summary of the invention
The object of the present invention is to provide a kind of air quality perception external member based on smartphone audio frequency interface, be intended to solve existing smart mobile phone and do not possess problem to surrounding environment perceptional function.
The present invention realizes like this, based on an air quality perception external member for smartphone audio frequency interface, should comprise based on the air quality perception external member of smartphone audio frequency interface: main control unit, audio interface unit, extended interface unit, data storage cell, the first sensing equipment, the second sensing equipment, smart mobile phone;
Main control unit, for controlling transducer collection signal, carries out coded modulation to signal, and the control to other modules of circuit;
Audio interface unit, be connected with main control unit, for the transmission channel of the data command and electric energy of building smart mobile phone and main control unit, specifically comprise and provide energy from mobile phone collection electric energy to main control unit and other circuit, the automatic detection of two kinds of different microphones and ground line standard and switching;
Extended interface unit, is connected with main control unit, for expanding different sensor units, has general GPIO interface, and 2 UART, 1 I
2c and 1 SPI interface;
Data storage cell, is connected with main control unit, provides memory space for the MCU chip for main control unit;
First sensing equipment and the second sensing equipment, be connected with extended interface unit by serial communication mode, for providing the air quality monitoring information such as temperature, humidity, formaldehyde, carbon monoxide of environment, the simulation points signal describing air quality is obtained by sensing equipment, the Manchester's code modulation that main control unit carries out signal is passed to by serial line interface, then pass to by mobile audio interface process and the display that smart mobile phone APP program carries out image conversion, make user's energy perception ambient air quality.
Further, main control unit adopts low-power consumption 32 bit processor of NXP812.
Further, extended interface unit provides GPIO, UART, SPI and I
2c serial line interface.
Further, audio interface unit is connected with the MCU chip of main control unit by GPIO serial communication mode.
Further, external member circuit module comprises for collecting from mobile audio interface and producing the power subsystem of 3.3V burning voltage, power subsystem comprises the voltage regulator that a model is LD6806TD, and realizing Power convert by voltage regulator and peripheral circuit is 3.3V power supply.
Further, the first sensing equipment comprises formaldehyde sensor and multiple scalar sensors, and scalar sensors is temperature sensor, humidity sensor or air quality monitoring transducer.
Further, exception-triggered refer to when the second sensing equipment detect the harmful gas concentrations such as CO in Air be above standard threshold triggers mobile phone A PP produce alarm.
Air quality perception external member based on smartphone audio frequency interface provided by the invention, with intelligent mobile phone platform, with mobile phone A PP for Man Machine Interface, aligned environment perception external member achieves the perception to user's surrounding air environment.The present invention meets the taste of popular user at profile design aspect, and fashion is attractive in appearance, and meanwhile, the appearance of gorgeous fashion of the present invention also can be applied to the decoration of mobile phone, can embody user personality.The present invention adopts smartphone audio frequency interface as data-interface, plug and play.
Compared with prior art, the present invention has following beneficial effect:
(1) the air quality monitoring external member of cell phone platform provided by the invention, can reduce energy consumption further, and is conducive to reducing the cost building whole air quality monitoring equipment;
(2) circuit board provided by the invention adopts expansion interface to connect sensing equipment, enhances the versatility of platform, has higher extensibility;
(3) extended interface unit can support multiple different sensor assembly, is conducive to the application improving platform.
Accompanying drawing explanation
Fig. 1 is the air quality perception external member theory diagram based on smartphone audio frequency interface that the embodiment of the present invention provides;
Fig. 2 is the air quality perception external member structure schematic diagram based on smartphone audio frequency interface that the embodiment of the present invention provides;
In figure: 1, air quality perception external member; 11, main control unit; 12, audio interface unit; 13, extended interface unit; 14, data storage cell; 2, the first sensing equipment; 3, the second sensing equipment; 4, smart mobile phone.
Fig. 3 is the power module circuitry schematic diagram that the embodiment of the present invention provides;
Fig. 4 is the main control unit structural representation that the embodiment of the present invention provides;
Fig. 5 is the audio interface circuit schematic diagram that the embodiment of the present invention provides;
In figure: (a) handset port circuit; (b) energy collection circuit; C () is detected and commutation circuit automatically.
Fig. 6 is the sensing equipment circuit diagram that the embodiment of the present invention provides;
In figure: (a) Temperature Humidity Sensor circuit; (b) formaldehyde sensor circuit; (c) air mass sensor circuit.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with embodiment, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Below in conjunction with drawings and the specific embodiments, application principle of the present invention is further described.
As shown in Figure 1, aware platform is collected electric energy by smartphone audio frequency interface and is carried out the transmission of signal.The simulation points signal describing air quality is obtained by sensing equipment, the Manchester's code modulation that main control unit LPC812 carries out signal is passed to by serial line interface, then pass to by mobile audio interface process and the display that smart mobile phone APP program carries out image conversion, make user's energy perception ambient air quality.
As shown in Figure 2, the air quality perception external member based on smartphone audio frequency interface of the embodiment of the present invention mainly comprises: main control unit 11, audio interface unit 12, extended interface unit 13, data storage cell 14, first sensing equipment 2, second sensing equipment 3, smart mobile phone 4;
Main control unit 11, for controlling transducer collection signal, carries out coded modulation to signal, and the control to other modules of circuit;
Audio interface unit 12, be connected with main control unit 11, for the transmission channel of the data command and electric energy of building smart mobile phone and main control unit, specifically comprise and provide energy from mobile phone collection electric energy to main control unit and other circuit, the automatic detection of two kinds of different microphones and ground line standard and switching;
Extended interface unit 13, is connected with main control unit 11, for expanding different sensor units, has general GPIO interface, and 2 UART, 1 I
2c and 1 SPI interface;
Data storage cell 14, is connected with main control unit 11, for providing memory space for the MCU chip of main control unit 11;
First sensing equipment 2 and the second sensing equipment 3, is connected with extended interface unit 13 by serial communication mode, for providing temperature, the monitoring information such as humidity and air quality of environment.
Main control unit 11 comprises the MCU chip based on ARM Cortex-M0+ kernel, in actual applications, this MCU chip can adopt model to be low-power consumption 32 bit processor of NXP812, this MCU chip is integrated with the SRAM memory of 4KB and the FLASH memory of 16KB, for preventing the memory space inadequate of MCU chip self, external data storage cell 14, can determine the need of additional data storage cell 14 according to actual needs, if the memory space of MCU chip self enough, then without the need to data storage cell 14.
Extended interface unit 13 is for being connected with the first sensing equipment 2 and exception-triggered and the second sensing equipment 3 respectively by serial communication mode; Main control unit 11, extended interface unit 13 and audio interface unit 12 are all integrated on one piece of circuit board.Extended interface unit 13 provides GPIO, UART, SPI and I2C serial line interface, and be applicable to the sensing equipment connecting number of different types, in actual applications, expansion interface can access the first sensing equipment 2 and the second sensing equipment 3 simultaneously.
As shown in Figure 5, audio interface unit 12 comprises energy collection circuit, voltage stabilizing circuit, automatically detects and commutation circuit.In the present embodiment, model is adopted to be the collection that 6 diode voltage multipliers of BAT721 carry out electric energy, automatic detection and commutation circuit adopt NX3L4053 analog switch integrated chip, but are not limited thereto, can according to other dissimilar integrated chips of required selection.Wherein, pin 1-7 is connected with MCU chip by GPIO serial communication mode.
As shown in Figure 3, the aware platform that the present embodiment provides also comprises power subsystem: the Conversion of Energy for being collected by mobile audio interface is 3.3V power supply.In the present embodiment, power subsystem comprises the voltage regulator that a model is LD6806TD, and realizing Power convert by this voltage regulator and peripheral circuit thereof is 3.3V power supply.
The using method of the aware platform that the present embodiment provides and operation principle as follows:
First sensing equipment 2 of outside and the second sensing equipment 3 are accessed aware platform simultaneously, and wherein, cycle monitoring first sensing equipment 2 comprises formaldehyde sensor and some scalar sensors.Wherein, scalar sensors can be temperature sensor, humidity sensor or air quality monitoring sensor, and the quantity of transducer can be selected according to actual needs.
Generally, the first sensing equipment 2 carries out the data acquisition of physical quantity by the cycle of presetting, and the Monitoring Data collected is sent to main control unit 11 by extended interface unit 13; Now, exception-triggered second sensing equipment 3 is idle.In the memory space that Monitoring Data is stored in self by main control unit 11 or data storage cell 14; Meanwhile, main control unit 11 pairs of Monitoring Data are analyzed.The Monitoring Data that first sensing equipment 2 and the second sensing equipment 3 collect by audio interface unit 12 by audio interface by smart mobile phone APP process and show.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. the air quality perception external member based on smartphone audio frequency interface, it is characterized in that, should comprise based on the air quality perception external member of smartphone audio frequency interface: main control unit, audio interface unit, extended interface unit, data storage cell, the first sensing equipment, the second sensing equipment, smart mobile phone;
Main control unit, for controlling transducer collection signal, carries out coded modulation to signal, and the control to other modules of circuit;
Audio interface unit, be connected with main control unit, for the transmission channel of the data command and electric energy of building smart mobile phone and main control unit, specifically comprise and provide energy from mobile phone collection electric energy to main control unit and other circuit, the automatic detection of two kinds of different microphones and ground line standard and switching;
Extended interface unit, is connected with main control unit, for expanding different sensor units, has general GPIO interface, and 2 UART, 1 I2C and 1 SPI interface;
Data storage cell, is connected with main control unit, provides memory space for the MCU chip for main control unit;
First sensing equipment and the second sensing equipment, be connected with extended interface unit by serial communication mode, for providing the air quality monitoring information such as temperature, humidity, formaldehyde, carbon monoxide of environment, the simulation points signal describing air quality is obtained by sensing equipment, the Manchester's code modulation that main control unit carries out signal is passed to by serial line interface, then pass to by mobile audio interface process and the display that smart mobile phone APP program carries out image conversion, make user's energy perception ambient air quality.
2. as claimed in claim 1 based on the air quality perception external member of smartphone audio frequency interface, it is characterized in that, main control unit adopts low-power consumption 32 bit processor of NXP812.
3., as claimed in claim 1 based on the air quality perception external member of smartphone audio frequency interface, it is characterized in that, extended interface unit provides GPIO, UART, SPI and I2C serial line interface.
4. as claimed in claim 1 based on the air quality perception external member of smartphone audio frequency interface, it is characterized in that, audio interface unit is connected with the MCU chip of main control unit by GPIO serial communication mode.
5. as claimed in claim 1 based on the air quality perception external member of smartphone audio frequency interface, it is characterized in that, external member circuit module comprises for collecting from mobile audio interface and producing the power subsystem of 3.3V burning voltage, power subsystem comprises the voltage regulator that a model is LD6806TD, and realizing Power convert by voltage regulator and peripheral circuit is 3.3V power supply.
6. as claimed in claim 1 based on the air quality perception external member of smartphone audio frequency interface, it is characterized in that, first sensing equipment comprises formaldehyde sensor and multiple scalar sensors, and scalar sensors is temperature sensor, humidity sensor or air quality monitoring transducer.
7. as claimed in claim 1 based on the air quality perception external member of smartphone audio frequency interface, it is characterized in that, exception-triggered refer to when the second sensing equipment detect the harmful gas concentrations such as CO in Air be above standard threshold triggers mobile phone A PP produce alarm.
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| CN201510012578.3A CN104836876A (en) | 2015-01-09 | 2015-01-09 | Air quality sensing suite based on smart phone audio interface |
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| CN201510012578.3A CN104836876A (en) | 2015-01-09 | 2015-01-09 | Air quality sensing suite based on smart phone audio interface |
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| CN106840259A (en) * | 2017-01-24 | 2017-06-13 | 深圳企管加企业服务有限公司 | Environmental monitoring system |
| EP3225439A1 (en) * | 2016-03-29 | 2017-10-04 | Beijing Xiaomi Mobile Software Co., Ltd. | Plug-in air quality detector, control method and control circuit |
| CN111899625A (en) * | 2020-07-16 | 2020-11-06 | 北京理工大学 | Intelligent driving assisting development device |
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| US20130174646A1 (en) * | 2012-01-09 | 2013-07-11 | David Martin | Networked air quality monitoring |
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Application publication date: 20150812 |
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