CN109151046A - A kind of smart home system based on Internet of Things - Google Patents
A kind of smart home system based on Internet of Things Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T5/00—Image enhancement or restoration
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- G—PHYSICS
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- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
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- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/2803—Home automation networks
- H04L12/2816—Controlling appliance services of a home automation network by calling their functionalities
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
- H04L67/125—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks involving control of end-device applications over a network
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- H—ELECTRICITY
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- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/38—Services specially adapted for particular environments, situations or purposes for collecting sensor information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/2803—Home automation networks
- H04L2012/284—Home automation networks characterised by the type of medium used
- H04L2012/2841—Wireless
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
- H04M1/724—User interfaces specially adapted for cordless or mobile telephones
- H04M1/72403—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality
- H04M1/72409—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality by interfacing with external accessories
- H04M1/72415—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality by interfacing with external accessories for remote control of appliances
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Abstract
The present invention provides a kind of smart home system based on Internet of Things, utilize central processing unit, temperature sensor, first signal processing circuit, humidity sensor, second signal processing circuit, image collecting device, image processing apparatus, PM2.5 sensor, Zigbee module, user mobile phone, display device, storage device and temp and humidity regulator, signal processing is carried out to the temperature and humidity parameter that temperature sensor and humidity sensor measure, improve the precision of environmental monitoring, people can be made effectively to understand itself living environment, the image information of image acquisition device family outdoors can also be passed through, and by above-mentioned temperature signal, moisture signal, image information and PM2.5 concentration are transmitted to user mobile phone, make user's timely learning indoor environment situation.
Description
Technical field
The present invention relates to intellectual monitoring field more particularly to a kind of smart home systems based on Internet of Things.
Background technique
Indoor environment includes room, office building, office, the vehicles, entertainment sport place, hospital ward,
School kindergarten classroom recreation room, restaurant hotel hotels and other places, the superiority and inferiority and health of all indoor environmental qualities have close
Relationship, domestic environment be family reunite, rest, study and housework artificial subenvironment, domestic environment sanitary condition it is good
It is bad, the morbidity and mortality of resident are directly affected, environmental protection is more and more valued by people, but there are many people not have also
Influence to indoor environmental quality to health consciously.City dweller works indoors daily, the time of studying and living accounts for entirely
90% or so of its time, residence time is longer indoors by some old men, children, therefore, living environment and human health and youngster
The relationship of virgin growth and development is extremely close.
Sensor is used only to the monitoring of home environment in the prior art to be monitored indoor environmental parameter, but not
Signal processing is carried out to the environmental parameter that sensor measures, thus monitoring accuracy is not high, and people cannot be made to itself living environment
Effectively understood, and then is not able to satisfy the demand that people are increasingly enhanced living environment.
Summary of the invention
Therefore, to solve the above-mentioned problems, the present invention provides a kind of smart home system based on Internet of Things, utilizes center
Processor, temperature sensor, the first signal processing circuit, humidity sensor, second signal processing circuit, image collecting device,
Image processing apparatus, PM2.5 sensor, Zigbee module, user mobile phone, display device, storage device and temperature and humidity adjustment
Device carries out signal processing to the temperature and humidity parameter that temperature sensor and humidity sensor measure, improves the essence of environmental monitoring
Degree, can make people effectively understand itself living environment, can also be believed by the image of image acquisition device family outdoors
Breath, and above-mentioned temperature signal, moisture signal, image information and PM2.5 concentration are transmitted to user mobile phone, obtain user in time
Know indoor environment situation.
A kind of smart home system based on Internet of Things according to the present invention comprising central processing unit, temperature sensor,
First signal processing circuit, humidity sensor, second signal processing circuit, image collecting device, image processing apparatus, PM2.5
Sensor, Zigbee module, user mobile phone, display device, storage device and temp and humidity regulator.
Wherein temperature sensor, humidity sensor and PM2.5 sensor are set to interior, and image collecting device is set to
Above entry door, the output end of temperature sensor is connect with the input terminal of the first signal processing circuit, the output of humidity sensor
End is connect with the input terminal of second signal processing circuit, and the output end of image collecting device and the input terminal of image processing apparatus connect
Connect, the output end of the first signal processing circuit, the output end of second signal processing circuit, image processing apparatus output end and
The output end of PM2.5 sensor is connect with the input terminal of central processing unit, the input terminal of display device and storage device it is defeated
Enter end to connect with the output end of central processing unit, central processing unit is connect with Zigbee module both-way communication, Zigbee module
It is connect with user mobile phone both-way communication, the output end of central processing unit and the input terminal of temp and humidity regulator connect.
Preferably, temperature sensor is set to interior, converts for acquiring room temperature, and by the temperature signal of acquisition
For current signal, and current signal is transmitted to the first signal processing circuit, the first signal processing circuit includes signal acquisition list
Member and signal processing unit, the output end of temperature sensor and the input terminal of signal acquisition unit connect, signal acquisition unit
The connection of the input terminal of output end and signal processing unit, the output end of signal processing unit and the port ADC of central processing unit connect
It connects.
Preferably, signal acquisition unit includes resistance R1 and filter capacitor C1, wherein the output end of temperature sensor connects
The both ends of resistance R1 are connected to, the both ends of resistance R1 are connect with the both ends of filter capacitor C1, and resistance R1 is connected with filter capacitor C1
One end draw output end as signal acquisition unit, the other end that resistance R1 is connected with filter capacitor C1 is grounded.
Preferably, the voltage signal after signal processing unit processes is V1, and signal processing unit includes resistance R2-
R11, capacitor C2-C4 and integrated transporting discharging A1-A2.
Wherein, the output end of signal acquisition unit is connect with one end of resistance R3, the other end and integrated transporting discharging of resistance R3
The non-inverting input terminal of A1 connects, and one end ground connection of resistance R2, the other end of resistance R2 and the inverting input terminal of integrated transporting discharging A1 connect
It connecing, the other end of resistance R2 is also connect with one end of resistance R6, and the other end of resistance R6 is connect with the output end of integrated transporting discharging A1,
The other end of resistance R6 is also connect with one end of resistance R4, and one end of resistance R4 is connect with the output end of integrated transporting discharging A1, resistance
One end of R4 is also connect with one end of resistance R7, and the other end of resistance R4 is connect with one end of resistance R5, the other end of resistance R5
Ground connection, the other end of resistance R3 are connect with one end of resistance R5, and the other end of resistance R7 is connect with one end of capacitor C2, capacitor C2
Other end ground connection, one end of capacitor C2 also connect with one end of resistance R8, the other end of resistance R7 also one end with resistance R8
Connection, the other end of resistance R8 connect with one end of capacitor C3, and the other end of capacitor C3 is grounded, one end of capacitor C3 also with integrate
The inverting input terminal of amplifier A2 connects, and the other end of resistance R8 is also connect with the inverting input terminal of integrated transporting discharging A2, resistance R9's
One end is connect with the non-inverting input terminal of integrated transporting discharging A2, the other end of resistance R9 ground connection, resistance R10 and capacitor C4 it is in parallel after one
End is connect with the inverting input terminal of integrated transporting discharging A2, and the other end after resistance R10 and capacitor C4 parallel connection is defeated with integrated transporting discharging A2's
Outlet connection, resistance R10 and capacitor C4 it is in parallel after the other end also connect with one end of resistance R11, one end of resistance R11 also with
The output end of integrated transporting discharging A2 connects, and the other end of resistance R11 and the port ADC of central processing unit connect, signal processing unit
By the port the ADC connection of treated voltage signal V1 is transmitted to central processing unit.
Preferably, humidity sensor is set to interior, and for acquiring indoor humidity, humidity sensor turns indoor humidity
It is changed to voltage signal V2, and voltage signal V2 is transmitted to second signal processing circuit, by second signal processing circuit processes
Voltage signal afterwards is V3, and second signal processing circuit includes resistance R12-R22, capacitor C5-C6 and integrated transporting discharging A3-A4.
Wherein, the output end of one end of resistance R12 and humidity sensor connects, the other end and integrated transporting discharging of resistance R12
The inverting input terminal of A3 connects, and the other end of resistance R12 is connect with one end of resistance R13, the other end and resistance of resistance R13
One end of R14 connects, and the other end of resistance R13 is also connect with one end of resistance R15, the other end ground connection of resistance R15, resistance
The other end of R14 is connect with the output end of integrated transporting discharging A3, one end ground connection of resistance R16, the other end of resistance R16 and integrated fortune
Put the non-inverting input terminal connection of A3, the other end of resistance R16 also connect with one end of resistance R18, the other end of resistance R18 also with
The output end of integrated transporting discharging A3 connects, and the other end of resistance R16 is also connect with one end of resistance R19, one end of resistance R19 also with
One end of resistance R18 connects, and the other end ground connection of resistance R19, one end of resistance R17 is connect with the output end of integrated transporting discharging A3,
The other end of resistance R17 is connect with one end of resistance R20, and one end of resistance R20 is also connect with one end of capacitor C5, capacitor C5's
Other end ground connection, the other end of resistance R20 connect with the inverting input terminal of integrated transporting discharging A4, the other end of resistance R20 also with electricity
Hold one end connection of C6, the other end of capacitor C6 is connect with the output end of integrated transporting discharging A4, the other end, the resistance R20 of resistance R17
One end and one end of capacitor C5 connect with resistance R21, the other end of resistance R21 and the output end of integrated transporting discharging A4 connect
It connects, one end of resistance R22 is connect with the non-inverting input terminal of integrated transporting discharging A4, the other end ground connection of resistance R22.
Preferably, image processing apparatus includes image denoising module, image smoothing module and image enhancement module.
Wherein, the output end of image collecting device and the input terminal of image denoising module connect, image denoising module it is defeated
Outlet is connect with the input terminal of image smoothing module, and the output end of image smoothing module and the input terminal of image enhancement module connect
It connects, the output end of image enhancement module and the input terminal of central processing unit connect.
Preferably, Zigbee module includes DEU data encryption unit, data transmission unit and data decryption unit.
Wherein, user mobile phone and Zigbee module both-way communication, central processing unit and Zigbee module both-way communication, with
When family mobile phone transfers data to central processing unit, user mobile phone sends data to DEU data encryption unit, and DEU data encryption unit will
Data are transmitted to data transmission unit, and encrypted data are transmitted to data decryption unit, data deciphering by data transmission unit
Unit is transmitted to central processing unit after encrypted data are decrypted, and transfers data to user mobile phone in central processing unit
When, central processing unit sends data to DEU data encryption unit, and DEU data encryption unit sends data to data transmission unit, number
Encrypted data are transmitted to data decryption unit according to transmission unit, encrypted data are decrypted in data decryption unit
After be transmitted to user mobile phone.
Preferably, temperature sensor is non-contact type temperature sensor, and humidity sensor is that resistance change type is opposite
Humidity sensor uses high molecular material in sense Wet portion, feels and be provided with porous film, image collector outside Wet portion
It is set to ccd image sensor, storage device includes a reading data interface, and reading data interface is USB interface.
Preferably, temperature sensor is for acquiring indoor temperature information, and collected indoor temperature information is transmitted
To the first signal processing circuit, after the temperature information received is carried out signal amplification, filtering processing by the first signal processing circuit
It is transmitted to central processing unit, the temperature information received is transmitted to user mobile phone by Zigbee module by central processing unit, in
The temperature information received is transmitted to display device and shown by central processor, the temperature information that central processing unit will receive
Storage device is transmitted to be stored；Humidity sensor believes collected indoor humidity for humidity information in collection room
Breath is transmitted to second signal processing circuit, and the humidity information received is carried out signal amplification, filtering by second signal processing circuit
Central processing unit is transmitted to after processing, the humidity information received is transmitted to user hand by Zigbee module by central processing unit
The humidity information received is transmitted to display device and shown by machine, central processing unit, and central processing unit is wet by what is received
Degree information is transmitted to storage device and is stored；PM2.5 sensor is for PM2.5 information in collection room, and by collected room
Interior PM2.5 information is transmitted to central processing unit, and the PM2.5 information received is transmitted to by central processing unit by Zigbee module
The PM2.5 information received is transmitted to display device and shown by user mobile phone, central processing unit, and central processing unit will receive
To PM2.5 information be transmitted to storage device and stored；User knows that room temperature is believed by user mobile phone or display device
Breath, humidity information and PM2.5 information, and control letter is sent to central processing unit by Zigbee module according to the information of acquisition
Number, central processing unit is adjusted indoor temperature and humidity according to the control signal control temp and humidity regulator received.
Preferably, image collecting device is used to acquire the face for the personnel that register one's residence and the image information of environment, and will acquisition
Image information be transmitted to the image denoising module in image processing module, image collecting device is transmitted to image processing apparatus
Image definition be two-dimensional function f (x, y), wherein x, y are space coordinates, and image denoising module carries out figure to image f (x, y)
As denoising, two-dimensional image function of the image after denoising is p (x, y), wherein
,
Image smoothing module is smoothed above-mentioned image p (x, y), and two-dimensional image function is after picture smooth treatment
H (x, y), wherein smooth function is g (x, y),
,
, ﹡ is convolution symbol,For customized adjustable constant, smooth effect is to pass throughCome
Control,
Image enhancement module carries out image enhancement processing, the two-dimensional image after image enhancement processing to above-mentioned image h (x, y)
Function is u (x, y), wherein
,
Image u (x, y) is transmitted to central processing unit by image processing apparatus, and central processing unit passes the image u (x, y) received
Display device is transported to be shown, the image u (x, y) received is transmitted to storage device and stored by central processing unit, in
The image u (x, y) received is transmitted to user mobile phone by Zigbee module by central processor.
Compared with prior art, the present invention have it is following the utility model has the advantages that
(1) smart home system provided by the invention based on Internet of Things utilizes central processing unit, temperature sensor, the first letter
Number processing circuit, humidity sensor, second signal processing circuit, image collecting device, image processing apparatus, PM2.5 sensor,
Zigbee module, user mobile phone, display device, storage device and temp and humidity regulator pass temperature sensor and humidity
The temperature and humidity parameter that sensor measures carries out signal processing, improves the precision of environmental monitoring, people can be made to itself living environment
Effectively understood, can also be believed by the image information of image acquisition device family outdoors, and by above-mentioned temperature signal, humidity
Number, image information and PM2.5 concentration be transmitted to user mobile phone, make user's timely learning indoor environment situation；
(2) smart home system provided by the invention based on Internet of Things, image point of the image processing apparatus therein to acquisition
Not carry out image denoising, image smoothing, image enhancement processing, can efficiently, quickly extract the image information of image collecting device,
The identification precision that the image information to the face and environment for the personnel of registering one's residence can be improved, efficiently reduces erroneous judgement and happens.
Detailed description of the invention
Fig. 1 is a kind of schematic diagram of smart home system based on Internet of Things of the invention；
Fig. 2 is the circuit diagram of the first signal processing circuit of the invention；
Fig. 3 is the circuit diagram of second signal processing circuit of the invention；
Fig. 4 is the schematic diagram of image processing apparatus of the invention；
Fig. 5 is the schematic diagram of the Zigbee module when user mobile phone transfers data to central processing unit；
Fig. 6 is the schematic diagram of the Zigbee module when central processing unit transfers data to user mobile phone.
Appended drawing reference:
1- central processing unit；2- temperature sensor；The first signal processing circuit of 3-；4- humidity sensor；The processing of 5- second signal
Circuit；6- image collecting device；7- image processing apparatus；8-PM2.5 sensor；9-Zigbee module；10- user mobile phone；11-
Display device；12- storage device；13- temp and humidity regulator.
Specific embodiment
The smart home system to provided by the invention based on Internet of Things carries out specifically with reference to the accompanying drawings and examples
It is bright.
As shown in Figure 1, a kind of smart home system based on Internet of Things provided by the invention, the intelligent family based on Internet of Things
The system of residence includes central processing unit 1, temperature sensor 2, the first signal processing circuit 3, humidity sensor 4, second signal processing
Circuit 5, image collecting device 6, image processing apparatus 7, PM2.5 sensor 8, Zigbee module 9, user mobile phone 10, display dress
Set 11, storage device 12 and temp and humidity regulator 13.
Wherein temperature sensor 2, humidity sensor 4 and PM2.5 sensor 8 are set to interior, and image collecting device 6 is set
It is placed in above entry door, the output end of temperature sensor 2 is connect with the input terminal of the first signal processing circuit 3, humidity sensor 4
Output end connect with the input terminal of second signal processing circuit 5, the output end of image collecting device 6 and image processing apparatus 7
Input terminal connection, output end, the image processing apparatus of the output end of the first signal processing circuit 3, second signal processing circuit 5
7 output end and the output end of PM2.5 sensor 8 are connect with the input terminal of central processing unit 1, the input of display device 11
End and the input terminal of storage device 12 are connect with the output end of central processing unit 1, central processing unit 1 and Zigbee module 9 pairs
To communication connection, Zigbee module 9 is connect with 10 both-way communication of user mobile phone, the output end and temperature and humidity tune of central processing unit 1
The input terminal of regulating device 13 connects.
In above embodiment, central processing unit 1, temperature sensor 2, the first signal processing circuit 3, humidity are passed in utilization
Sensor 4, second signal processing circuit 5, image collecting device 6, image processing apparatus 7, PM2.5 sensor 8, Zigbee module 9,
User mobile phone 10, display device 11, storage device 12 and temp and humidity regulator 13, to temperature sensor 2 and humidity sensor
Temperature and humidity parameter that device 4 measures carries out signal processing, improves the precision of environmental monitoring, can make people to itself living environment into
Row effectively understands, and the image information of family outdoors can be also acquired by image collecting device 6, and above-mentioned temperature signal, humidity are believed
Number, image information and PM2.5 concentration be transmitted to user mobile phone 10, make user's timely learning indoor environment situation.
As above-mentioned further preferential, as shown in Fig. 2, temperature sensor 2 is set to interior, for acquiring Indoor Temperature
Degree, and the temperature signal of acquisition is converted into current signal, and current signal is transmitted to the first signal processing circuit 3, first
Signal processing circuit 3 includes signal acquisition unit and signal processing unit, the output end and signal acquisition unit of temperature sensor 2
Input terminal connection, the input terminal of the output end of signal acquisition unit and signal processing unit connects, signal processing unit it is defeated
Outlet is connect with the port ADC of central processing unit 1.
Specifically, signal acquisition unit includes resistance R1 and filter capacitor C1, wherein the output end of temperature sensor 2 connects
The both ends of resistance R1 are connected to, the both ends of resistance R1 are connect with the both ends of filter capacitor C1, and resistance R1 is connected with filter capacitor C1
One end draw output end as signal acquisition unit, the other end that resistance R1 is connected with filter capacitor C1 is grounded.
Specifically, the voltage signal after signal processing unit processes is V1, and signal processing unit includes resistance R2-
R11, capacitor C2-C4 and integrated transporting discharging A1-A2.
Wherein, the output end of signal acquisition unit is connect with one end of resistance R3, the other end and integrated transporting discharging of resistance R3
The non-inverting input terminal of A1 connects, and one end ground connection of resistance R2, the other end of resistance R2 and the inverting input terminal of integrated transporting discharging A1 connect
It connecing, the other end of resistance R2 is also connect with one end of resistance R6, and the other end of resistance R6 is connect with the output end of integrated transporting discharging A1,
The other end of resistance R6 is also connect with one end of resistance R4, and one end of resistance R4 is connect with the output end of integrated transporting discharging A1, resistance
One end of R4 is also connect with one end of resistance R7, and the other end of resistance R4 is connect with one end of resistance R5, the other end of resistance R5
Ground connection, the other end of resistance R3 are connect with one end of resistance R5, and the other end of resistance R7 is connect with one end of capacitor C2, capacitor C2
Other end ground connection, one end of capacitor C2 also connect with one end of resistance R8, the other end of resistance R7 also one end with resistance R8
Connection, the other end of resistance R8 connect with one end of capacitor C3, and the other end of capacitor C3 is grounded, one end of capacitor C3 also with integrate
The inverting input terminal of amplifier A2 connects, and the other end of resistance R8 is also connect with the inverting input terminal of integrated transporting discharging A2, resistance R9's
One end is connect with the non-inverting input terminal of integrated transporting discharging A2, the other end of resistance R9 ground connection, resistance R10 and capacitor C4 it is in parallel after one
End is connect with the inverting input terminal of integrated transporting discharging A2, and the other end after resistance R10 and capacitor C4 parallel connection is defeated with integrated transporting discharging A2's
Outlet connection, resistance R10 and capacitor C4 it is in parallel after the other end also connect with one end of resistance R11, one end of resistance R11 also with
The output end of integrated transporting discharging A2 connects, and the other end of resistance R11 is connect with the port ADC of central processing unit 1, signal processing unit
By the port the ADC connection of treated voltage signal V1 is transmitted to central processing unit 1.
In above embodiment, the resistance value of resistance R1 is 1K Ω, and the resistance value of resistance R2 is 10K Ω, and the resistance value of resistance R3 is
The resistance value of 15K Ω, resistance R4 are 4K Ω, and the resistance value of resistance R5 is 6K Ω, and the resistance value of resistance R6 is 10K Ω, the resistance value of resistance R7
For 15K Ω, the resistance value of resistance R8 is 17K Ω, and the resistance value of resistance R9 is 4.7K Ω, and the resistance value of resistance R10 is 1K Ω, resistance R11
Resistance value be 10K Ω, the capacitance of capacitor C1 is 1 μ F, and the capacitance of capacitor C2 is 0.1 μ F, and the capacitance of capacitor C3 is 0.1 μ
The capacitance of F, capacitor C4 are 200pF.
Signal acquisition unit is powered using single supply, reduces power supply, and does not increase the complexity of signal acquisition circuit
Property, circuit structure is succinct, easy to accomplish, save the cost, and realizes the two-way acquisition that electric current is exported to temperature sensor 2,
Broad quantum, precision are high.
Current signal I0 is converted to measurable voltage signal after resistance R1, the entering signal after capacitor C1 filtering
The input terminal of processing unit, wherein resistance R1 is the build-out resistor of temperature sensor 2.
Signal processing unit is put by the signal that resistance R2-R6 and integrated transporting discharging A1 exports temperature sensor 2
Then big processing reuses resistance R7-R11, capacitor C2-C4 and integrated transporting discharging A2 and carries out to by amplified voltage signal
Low-pass filtering treatment, to improve the precision of temperature detection.
As above-mentioned further preferential, as shown in figure 3, humidity sensor 4 is set to interior, for wet in collection room
Degree, indoor humidity is converted to voltage signal V2 by humidity sensor 4, and voltage signal V2 is transmitted to second signal processing circuit
5, it is V3 by treated the voltage signal of second signal processing circuit 5, second signal processing circuit 5 includes resistance R12-R22,
Capacitor C5-C6 and integrated transporting discharging A3-A4.
Wherein, one end of resistance R12 is connect with the output end of humidity sensor 4, the other end and integrated transporting discharging of resistance R12
The inverting input terminal of A3 connects, and the other end of resistance R12 is connect with one end of resistance R13, the other end and resistance of resistance R13
One end of R14 connects, and the other end of resistance R13 is also connect with one end of resistance R15, the other end ground connection of resistance R15, resistance
The other end of R14 is connect with the output end of integrated transporting discharging A3, one end ground connection of resistance R16, the other end of resistance R16 and integrated fortune
Put the non-inverting input terminal connection of A3, the other end of resistance R16 also connect with one end of resistance R18, the other end of resistance R18 also with
The output end of integrated transporting discharging A3 connects, and the other end of resistance R16 is also connect with one end of resistance R19, one end of resistance R19 also with
One end of resistance R18 connects, and the other end ground connection of resistance R19, one end of resistance R17 is connect with the output end of integrated transporting discharging A3,
The other end of resistance R17 is connect with one end of resistance R20, and one end of resistance R20 is also connect with one end of capacitor C5, capacitor C5's
Other end ground connection, the other end of resistance R20 connect with the inverting input terminal of integrated transporting discharging A4, the other end of resistance R20 also with electricity
Hold one end connection of C6, the other end of capacitor C6 is connect with the output end of integrated transporting discharging A4, the other end, the resistance R20 of resistance R17
One end and one end of capacitor C5 connect with resistance R21, the other end of resistance R21 and the output end of integrated transporting discharging A4 connect
It connects, one end of resistance R22 is connect with the non-inverting input terminal of integrated transporting discharging A4, the other end ground connection of resistance R22.
In above embodiment, the resistance value of resistance R12 is 2K Ω, and the resistance value of resistance R13 is 12K Ω, the resistance value of resistance R14
For 12K Ω, the resistance value of resistance R15 is 15K Ω, and the resistance value of resistance R16 is 4K Ω, and the resistance value of resistance R17 is 16K Ω, resistance R18
Resistance value be 10K Ω, the resistance value of resistance R19 is 15K Ω, and the resistance value of resistance R20 is 15K Ω, and the resistance value of resistance R21 is 12K Ω,
The resistance value of resistance R22 is 17K Ω, and the capacitance of capacitor C5 is 1 μ F, and the capacitance of capacitor C6 is 0.1 μ F.
Since the signal that humidity sensor 4 acquires is faint voltage signal, thus second signal processing circuit 5 passes through electricity
The voltage V2 that resistance R12-R19 and integrated transporting discharging A3 exports humidity sensor 4 amplifies processing, then reuses resistance
R20-R22, capacitor C5-C6 and integrated transporting discharging A4 carry out low-pass filtering treatment to by amplified voltage signal, to mention
The high precision of Humidity Detection.
As above-mentioned further preferential, as shown in figure 4, image processing apparatus 7 includes image denoising module, image smoothing
Module and image enhancement module.
Wherein, the output end of image collecting device 6 and the input terminal of image denoising module connect, image denoising module it is defeated
Outlet is connect with the input terminal of image smoothing module, and the output end of image smoothing module and the input terminal of image enhancement module connect
It connects, the output end of image enhancement module is connect with the input terminal of central processing unit 1.
In above embodiment, the image of 7 pairs of image processing apparatus acquisitions carries out image denoising, image smoothing, figure respectively
Image intensifying processing, can efficiently, quickly extract the image information of image collecting device 6, can be improved to the personnel of registering one's residence face and
The identification precision of the image information of environment efficiently reduces erroneous judgement and happens.
As above-mentioned further preferential, as seen in figs. 5-6, Zigbee module 9 includes that DEU data encryption unit, data are transmitted
Unit and data decryption unit；
Wherein, user mobile phone and 9 both-way communication of Zigbee module, central processing unit 1 and 9 both-way communication of Zigbee module, with
When family mobile phone 10 transfers data to central processing unit 1, user mobile phone 10 sends data to DEU data encryption unit, data encryption list
Member sends data to data transmission unit, and encrypted data are transmitted to data decryption unit, data by data transmission unit
Decryption unit is transmitted to central processing unit 1 after encrypted data are decrypted, transfer data to user in central processing unit 1
When mobile phone 10, central processing unit 1 sends data to DEU data encryption unit, and DEU data encryption unit sends data to data transmission
Encrypted data are transmitted to data decryption unit by unit, data transmission unit, and data decryption unit is to encrypted data
User mobile phone 10 is transmitted to after being decrypted.
Specifically, temperature sensor 2 is non-contact type temperature sensor, and humidity sensor 4 is that resistance change type is opposite
Humidity sensor uses high molecular material in sense Wet portion, feels and be provided with porous film, image collector outside Wet portion
6 are set as ccd image sensor, storage device 12 includes a reading data interface, and reading data interface is USB interface.
In above embodiment, user can read indoor history environment parameter by storage device 12.
Specifically, when the smart home system provided by the invention based on Internet of Things is run, temperature sensor 2 is for adopting
Set indoor temperature information, and collected indoor temperature information is transmitted to the first signal processing circuit 3, the first signal processing electricity
Road 3 is transmitted to central processing unit 1 after the temperature information received is carried out signal amplification, filtering processing, and central processing unit 1 passes through
The temperature information received is transmitted to user mobile phone by Zigbee module 9, and central processing unit 1 transmits the temperature information received
It is shown to display device 11, the temperature information received is transmitted to storage device and stored by central processing unit 1；Humidity
Collected indoor humidity information is transmitted to second signal processing circuit 5 for humidity information in collection room by sensor 4,
Second signal processing circuit 5 is transmitted to central processing unit 1 after the humidity information received is carried out signal amplification, filtering processing,
The humidity information received is transmitted to user mobile phone by Zigbee module 9 by central processing unit 1, and central processing unit 1 will receive
To humidity information be transmitted to display device 11 and shown, the humidity information received is transmitted to storage by central processing unit 1
Device is stored；PM2.5 sensor 8 is transmitted for PM2.5 information in collection room, and by collected interior PM2.5 information
To central processing unit 1, the PM2.5 information received is transmitted to user mobile phone by Zigbee module 9 by central processing unit 1, in
The PM2.5 information received is transmitted to display device 11 and shown by central processor 1, and central processing unit 1 will receive
PM2.5 information is transmitted to storage device and is stored；User knows that room temperature is believed by user mobile phone 9 or display device 11
Breath, humidity information and PM2.5 information, and sent and controlled to central processing unit 1 by Zigbee module 9 according to the information of acquisition
Signal, central processing unit 1 are adjusted indoor temperature and humidity according to the control signal control temp and humidity regulator 13 received.
Specifically, image collecting device 6 is used to acquire the face and the image information of environment for the personnel that register one's residence, and by acquisition
Image information is transmitted to the image denoising module in image processing module 7, and image collecting device 6 is transmitted to image processing apparatus
7 image definition is two-dimensional function f (x, y), and wherein x, y are space coordinates, and image denoising module carries out figure to image f (x, y)
As denoising, two-dimensional image function of the image after denoising is p (x, y), wherein
,
Image smoothing module is smoothed above-mentioned image p (x, y), and two-dimensional image function is after picture smooth treatment
H (x, y), wherein smooth function is g (x, y),
,
, ﹡ is convolution symbol,For customized adjustable constant, smooth effect is to pass throughCome
Control,
Image enhancement module carries out image enhancement processing, the two-dimensional image after image enhancement processing to above-mentioned image h (x, y)
Function is u (x, y), wherein
,
Image u (x, y) is transmitted to central processing unit 1 by image processing apparatus 7, central processing unit 1 by the image u received (x,
Y) display device 11 is transmitted to be shown, central processing unit 1 by the image u (x, y) received be transmitted to storage device 11 into
The image u (x, y) received is transmitted to user mobile phone 10 by Zigbee module 9 by row storage, central processing unit 1.
It should be noted last that the above examples are only used to illustrate the technical scheme of the present invention and are not limiting.Although ginseng
It is described the invention in detail according to embodiment, those skilled in the art should understand that, to technical side of the invention
Case is modified or replaced equivalently, and without departure from the spirit and scope of technical solution of the present invention, should all be covered in the present invention
Scope of the claims in.
Claims (10)
1. a kind of smart home system based on Internet of Things, which is characterized in that the smart home system packet based on Internet of Things
Include central processing unit (1), temperature sensor (2), the first signal processing circuit (3), humidity sensor (4), second signal processing
Circuit (5), image collecting device (6), image processing apparatus (7), PM2.5 sensor (8), Zigbee module (9), user mobile phone
(10), display device (11), storage device (12) and temp and humidity regulator (13)；
Wherein the temperature sensor (2), the humidity sensor (4) and the PM2.5 sensor (8) are set to interior,
Described image acquisition device (6) is set to above entry door, at the output end and first signal of the temperature sensor (2)
The input terminal connection of circuit (3) is managed, the output end of the humidity sensor (4) is defeated with the second signal processing circuit (5)
Entering end connection, the output end of described image acquisition device (6) connect with the input terminal of described image processing unit (7), and described the
The output end of one signal processing circuit (3), the output end of the second signal processing circuit (5), described image processing unit (7)
Output end and the output end of the PM2.5 sensor (8) connect with the input terminal of the central processing unit (1), it is described
The input terminal of display device (11) and the input terminal of the storage device (12) connect with the output end of the central processing unit (1)
It connects, the central processing unit (1) connect with the Zigbee module (9) both-way communication, the Zigbee module (9) and the use
The connection of family mobile phone (10) both-way communication, the output end of the central processing unit (1) are defeated with the temp and humidity regulator (13)
Enter end connection.
2. the smart home system according to claim 1 based on Internet of Things, which is characterized in that the temperature sensor
(2) it is set to interior, is converted to current signal for acquiring room temperature, and by the temperature signal of acquisition, and by current signal
It is transmitted to first signal processing circuit (3), first signal processing circuit (3) includes at signal acquisition unit and signal
Unit is managed, the output end of the temperature sensor (2) is connect with the input terminal of the signal acquisition unit, the signal acquisition list
The output end of member is connect with the input terminal of the signal processing unit, the output end of the signal processing unit and the centre
Manage the port the ADC connection of device (1).
3. the smart home system according to claim 2 based on Internet of Things, which is characterized in that the signal acquisition unit
Including resistance R1 and filter capacitor C1, wherein the output end of the temperature sensor (2) is connected to the both ends of resistance R1, resistance
The both ends of R1 are connect with the both ends of filter capacitor C1, and one end that resistance R1 is connected with filter capacitor C1, which is drawn, is used as the signal
The output end of acquisition unit, the other end ground connection that resistance R1 is connected with filter capacitor C1.
4. the smart home system according to claim 3 based on Internet of Things, which is characterized in that pass through the signal processing
Voltage signal after cell processing is V1, and the signal processing unit includes resistance R2-R11, capacitor C2-C4 and integrated fortune
Put A1-A2；
Wherein, the output end of the signal acquisition unit is connect with one end of resistance R3, the other end and integrated transporting discharging of resistance R3
The non-inverting input terminal of A1 connects, and one end ground connection of resistance R2, the other end of resistance R2 and the inverting input terminal of integrated transporting discharging A1 connect
It connecing, the other end of resistance R2 is also connect with one end of resistance R6, and the other end of resistance R6 is connect with the output end of integrated transporting discharging A1,
The other end of resistance R6 is also connect with one end of resistance R4, and one end of resistance R4 is connect with the output end of integrated transporting discharging A1, resistance
One end of R4 is also connect with one end of resistance R7, and the other end of resistance R4 is connect with one end of resistance R5, the other end of resistance R5
Ground connection, the other end of resistance R3 are connect with one end of resistance R5, and the other end of resistance R7 is connect with one end of capacitor C2, capacitor C2
Other end ground connection, one end of capacitor C2 also connect with one end of resistance R8, the other end of resistance R7 also one end with resistance R8
Connection, the other end of resistance R8 connect with one end of capacitor C3, and the other end of capacitor C3 is grounded, one end of capacitor C3 also with integrate
The inverting input terminal of amplifier A2 connects, and the other end of resistance R8 is also connect with the inverting input terminal of integrated transporting discharging A2, resistance R9's
One end is connect with the non-inverting input terminal of integrated transporting discharging A2, the other end of resistance R9 ground connection, resistance R10 and capacitor C4 it is in parallel after one
End is connect with the inverting input terminal of integrated transporting discharging A2, and the other end after resistance R10 and capacitor C4 parallel connection is defeated with integrated transporting discharging A2's
Outlet connection, resistance R10 and capacitor C4 it is in parallel after the other end also connect with one end of resistance R11, one end of resistance R11 also with
The output end of integrated transporting discharging A2 connects, and the other end of resistance R11 is connect with the port ADC of the central processing unit (1), the letter
Number processing unit will treated voltage signal V1 the is transmitted to central processing unit (1) the connection of the port ADC.
5. the smart home system according to claim 1 based on Internet of Things, which is characterized in that the humidity sensor
(4) it is set to interior, for acquiring indoor humidity, indoor humidity is converted to voltage signal V2 by the humidity sensor (4), and
Voltage signal V2 is transmitted to the second signal processing circuit (5), treated by the second signal processing circuit (5)
Voltage signal is V3, and the second signal processing circuit (5) includes resistance R12-R22, capacitor C5-C6 and integrated transporting discharging A3-
A4；
Wherein, one end of resistance R12 is connect with the output end of the humidity sensor (4), the other end of resistance R12 and integrated fortune
The inverting input terminal connection of A3 is put, the other end of resistance R12 is connect with one end of resistance R13, the other end and resistance of resistance R13
One end of R14 connects, and the other end of resistance R13 is also connect with one end of resistance R15, the other end ground connection of resistance R15, resistance
The other end of R14 is connect with the output end of integrated transporting discharging A3, one end ground connection of resistance R16, the other end of resistance R16 and integrated fortune
Put the non-inverting input terminal connection of A3, the other end of resistance R16 also connect with one end of resistance R18, the other end of resistance R18 also with
The output end of integrated transporting discharging A3 connects, and the other end of resistance R16 is also connect with one end of resistance R19, one end of resistance R19 also with
One end of resistance R18 connects, and the other end ground connection of resistance R19, one end of resistance R17 is connect with the output end of integrated transporting discharging A3,
The other end of resistance R17 is connect with one end of resistance R20, and one end of resistance R20 is also connect with one end of capacitor C5, capacitor C5's
Other end ground connection, the other end of resistance R20 connect with the inverting input terminal of integrated transporting discharging A4, the other end of resistance R20 also with electricity
Hold one end connection of C6, the other end of capacitor C6 is connect with the output end of integrated transporting discharging A4, the other end, the resistance R20 of resistance R17
One end and one end of capacitor C5 connect with resistance R21, the other end of resistance R21 and the output end of integrated transporting discharging A4 connect
It connects, one end of resistance R22 is connect with the non-inverting input terminal of integrated transporting discharging A4, the other end ground connection of resistance R22.
6. the smart home system according to claim 1 based on Internet of Things, which is characterized in that described image processing unit
It (7) include image denoising module, image smoothing module and image enhancement module；
Wherein, the output end of described image acquisition device (6) is connect with the input terminal of described image denoising module, and described image is gone
The output end for module of making an uproar is connect with the input terminal of described image Leveling Block, the output end of described image Leveling Block and the figure
The input terminal of image intensifying module connects, and described image enhances the output end of module and the input terminal of the central processing unit (1) connects
It connects.
7. the smart home system according to claim 1 based on Internet of Things, which is characterized in that the Zigbee module
It (9) include DEU data encryption unit, data transmission unit and data decryption unit；
Wherein, the user mobile phone and the Zigbee module (9) both-way communication, the central processing unit (1) with it is described
Zigbee module (9) both-way communication, when the user mobile phone (10) transfers data to the central processing unit (1), the use
Family mobile phone (10) sends data to the DEU data encryption unit, and the DEU data encryption unit sends data to the data and passes
Encrypted data are transmitted to the data decryption unit, the data decryption unit by defeated unit, the data transmission unit
It is transmitted to the central processing unit (1) after encrypted data are decrypted, is transferred data in the central processing unit (1)
When user mobile phone (10), the central processing unit (1) sends data to the DEU data encryption unit, the data encryption
Unit sends data to the data transmission unit, and encrypted data are transmitted to the data by the data transmission unit
Decryption unit, the data decryption unit are transmitted to the user mobile phone (10) after encrypted data are decrypted.
8. the smart home system according to claim 1 based on Internet of Things, which is characterized in that the temperature sensor
It (2) is non-contact type temperature sensor, the humidity sensor (4) is resistance change type relative humidity sensor, is being felt
Wet portion uses high molecular material, feels and is provided with porous film outside Wet portion, and described image acquisition device (6) is CCD figure
As sensor, the storage device (12) includes a reading data interface, and the reading data interface is USB interface.
9. the smart home system according to claim 1 based on Internet of Things, which is characterized in that the temperature sensor
(2) for acquiring indoor temperature information, and collected indoor temperature information is transmitted to first signal processing circuit
(3), first signal processing circuit (3) is transmitted to institute after the temperature information received is carried out signal amplification, filtering processing
It states central processing unit (1), the central processing unit (1) is transmitted the temperature information received by the Zigbee module (9)
To the user mobile phone, the temperature information received is transmitted to the display device (11) and carried out by the central processing unit (1)
The temperature information received is transmitted to storage device and stored by display, the central processing unit (1)；The humidity sensor
(4) for humidity information in collection room, and collected indoor humidity information is transmitted to the second signal processing circuit
(5), the second signal processing circuit (5) is transmitted to institute after the humidity information received is carried out signal amplification, filtering processing
It states central processing unit (1), the central processing unit (1) is transmitted the humidity information received by the Zigbee module (9)
To the user mobile phone, the humidity information received is transmitted to the display device (11) and carried out by the central processing unit (1)
The humidity information received is transmitted to storage device and stored by display, the central processing unit (1)；The PM2.5 sensing
Collected interior PM2.5 information is transmitted to the central processing unit (1) for PM2.5 information in collection room by device (8),
The PM2.5 information received is transmitted to the user mobile phone by the Zigbee module (9) by the central processing unit (1),
The PM2.5 information received is transmitted to the display device (11) and shown by the central processing unit (1), the centre
The PM2.5 information received is transmitted to storage device and stored by reason device (1)；User passes through the user mobile phone (9) or aobvious
Showing device (11) knows indoor temperature information, humidity information and PM2.5 information, and according to the information of acquisition described in
Zigbee module (9) sends control signal to the central processing unit (1), and the central processing unit (1) is according to the control received
Signal processed controls the temp and humidity regulator (13) and indoor temperature and humidity is adjusted.
10. the smart home system according to claim 6 based on Internet of Things, which is characterized in that described image acquisition dress
(6) are set for acquiring the face for the personnel that register one's residence and the image information of environment, and the image information of acquisition is transmitted to described image
Described image in processing module (7) denoises module, and described image acquisition device (6) is transmitted to described image processing unit
(7) image definition is two-dimensional function f (x, y), and wherein x, y are space coordinates, and described image denoises module to image f (x, y)
Image denoising processing is carried out, two-dimensional image function of the image after denoising is p (x, y), wherein
,
Described image Leveling Block is smoothed above-mentioned image p (x, y), the two-dimensional image letter after picture smooth treatment
Number is h (x, y), and wherein smooth function is g (x, y),
,
, ﹡ is convolution symbol,For customized adjustable constant, smooth effect is to pass throughCome
Control,
Described image enhances module and carries out image enhancement processing, the image after image enhancement processing to above-mentioned image h (x, y)
Two-dimensional function is u (x, y), wherein
,
Image u (x, y) is transmitted to the central processing unit (1) by described image processing unit (7), the central processing unit (1)
The image u (x, y) received is transmitted to the display device (11) to show, the central processing unit (1) will receive
Image u (x, y) be transmitted to the storage device (11) and stored, the image u that the central processing unit (1) will receive
(x, y) is transmitted to the user mobile phone (10) by the Zigbee module (9).
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