CN109140697A - A kind of smart classroom monitoring system - Google Patents
A kind of smart classroom monitoring system Download PDFInfo
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- CN109140697A CN109140697A CN201811069865.8A CN201811069865A CN109140697A CN 109140697 A CN109140697 A CN 109140697A CN 201811069865 A CN201811069865 A CN 201811069865A CN 109140697 A CN109140697 A CN 109140697A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/52—Indication arrangements, e.g. displays
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/56—Remote control
- F24F11/58—Remote control using Internet communication
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/88—Electrical aspects, e.g. circuits
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- Combustion & Propulsion (AREA)
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Abstract
Smart classroom monitoring system provided by the invention, utilize computer processor unit, local area network communications module, temperature sensor, signal processing circuit, image collecting device, image processing apparatus, display device and storage device, wherein, the indoor temperature of religion that signal processing circuit can acquire temperature sensor amplifies, filtering processing, to keep temperature monitoring more accurate, image collecting device and image processing apparatus can be handled teaching indoor image information to be acquired simultaneously sharpening, and the indoor image information of religion and temperature information can be shown by being located at the display device on the external wall of classroom, personnel outside classroom can be made not enter classroom and know the situation in classroom, storage device can store the indoor image information of religion and temperature information, in case the later period calls.
Description
Technical field
The present invention relates to field of intelligent monitoring more particularly to a kind of smart classroom monitoring systems.
Background technique
Classroom is the place that teacher teaches lessons to student, and it by front is dais, the big room for being followed by seat that it, which is between one,
Between constitute, have blackboard or blank on the wall at dais, be teachers, arrange operation place, be followed by the seat of student.?
China, the desk arrangement of middle and primary schools generally have four groups, and every group has eight to nine tables, and every table sits two students, and whether the environment in classroom
Comfortably, one of an important factor for safety is guarantee learning efficiency.
Currently, being typically provided with air-conditioning equipment in classroom, indoor temperature is taught for adjusting, so that academics and students have one
A comfortable academic environment still fails accurately to monitor the actual temperature in classroom, moreover, fail to classroom environment into
Row effective monitoring.
Summary of the invention
Therefore, in order to overcome present in current classroom monitoring system cannot the actual temperature to classroom accurately supervised
The problem of controlling, cannot carrying out effective monitoring to classroom environment, the present invention provides a kind of smart classroom monitoring system, utilizes computer
Processing unit, temperature sensor, signal processing circuit, image collecting device, image processing apparatus, is shown local area network communications module
Showing device and storage device, wherein the indoor temperature of religion that signal processing circuit can acquire temperature sensor is put
Greatly, it is filtered, to keep temperature monitoring more accurate, image collecting device and image processing apparatus can be to the indoor figures of religion
As the display device that information is acquired and sharpening handles, and is located on the external wall of classroom can show the indoor image letter of religion
Breath and temperature information, can make personnel outside classroom not enter classroom and know the situation in classroom, storage device can store religion
Indoor image information and temperature information, in case the later period calls.
A kind of smart classroom monitoring system according to the present invention, smart classroom monitoring system include computer processor unit,
Local area network communications module, temperature sensor, signal processing circuit, image collecting device, image processing apparatus, display device and
Storage device；
Wherein, the output end of temperature sensor and the input terminal of signal processing circuit connect, the output end of signal processing circuit with
The input terminal of local area network communications module connects, and the output end of image collecting device and the input terminal of image processing apparatus connect, figure
As the input terminal connection of the output end and local area network communications module of processing unit, the output end and computer of local area network communications module
The input terminal of processing unit connects, and the output end of computer processor unit and the input terminal of display device connect, computer disposal
The output end of device and the input terminal of storage device connect.
Temperature sensor teaches indoor temperature information for acquiring, and the temperature signal of acquisition is converted to voltage signal V0,
And voltage signal V0 is transmitted to signal processing circuit, V1 is by signal processing circuit treated voltage signal, at signal
Reason circuit includes signal amplification unit and signal filter unit, the output end of temperature sensor and the input terminal of signal amplification unit
Connection, the output end of signal amplification unit are connect with the input terminal of signal filter unit, the output end of signal filter unit and office
The input terminal of domain Network Communication module connects, and the output signal of signal filter unit is transmitted at computer by local area network communications module
Manage the port ADC of device.
Signal amplification unit includes integrated transporting discharging A1-A2, resistance R1-R6 and capacitor C1-C4, the output of temperature sensor
End is connect with the non-inverting input terminal of integrated transporting discharging A1, and one end of capacitor C1 is connect with the output end of integrated transporting discharging A1, capacitor C1's
The other end is connect with the inverting input terminal of integrated transporting discharging A1, and one end of capacitor C1 is also connect with one end of resistance R1, capacitor C1's
The other end is also connect with the other end of resistance R1, and the other end of resistance R1 is connect with one end of resistance R2, the other end of resistance R2
Ground connection, one end of resistance R1 are also connect with one end of capacitor C2, and the other end of capacitor C2 is connect with one end of resistance R3, resistance R3
Other end ground connection, the other end of capacitor C2 also connect with one end of resistance R4, and the other end of resistance R4 is with integrated transporting discharging A2's
Inverting input terminal connection, the non-inverting input terminal ground connection of integrated transporting discharging A2, one end of capacitor C3 and the anti-phase input of integrated transporting discharging A2
End connection, the other end of capacitor C3 are connect with the output end of integrated transporting discharging A2, one end and collection after capacitor C4 is in parallel with resistance R5
It is connected at the output end of amplifier A2, the non-inverting input terminal of the other end and integrated transporting discharging A1 after capacitor C4 is in parallel with resistance R5 connects
It connects, the other end after capacitor C4 is in parallel with resistance R5 is also connect with one end of resistance R6, the other end ground connection of resistance R6.
Signal filter unit includes resistance R7-R10, capacitor C5-C7 and integrated transporting discharging A3, the signal amplification unit
Output end connect with one end of resistance R7, the output end of the signal amplification unit is also connect with one end of capacitor C5, capacitor
The other end of C5 is grounded, and the other end of resistance R7 is connect with one end of capacitor C6, and the other end ground connection of capacitor C6, resistance R7's is another
One end is connect with the inverting input terminal of integrated transporting discharging A3, and one end of resistance R8 is connect with the non-inverting input terminal of integrated transporting discharging A3, electricity
The other end ground connection of R8 is hindered, one end after resistance R9 is in parallel with capacitor C7 is connect with the inverting input terminal of integrated transporting discharging A3, resistance
The other end after R9 is in parallel with capacitor C7 is connect with the output end of integrated transporting discharging A3, the other end after resistance R9 is in parallel with capacitor C7
Also connect with one end of resistance R10, one end of resistance R10 is connect with the output end of integrated transporting discharging A3, the other end of resistance R10 with
The input terminal of local area network communications module connects, and by treated, voltage signal V1 is transmitted to local area network communication mould to signal processing unit
Voltage signal V1 is transmitted to the port ADC of computer processor unit by the input terminal of block, local area network communications module.
Preferably, image collecting device is set in classroom above blackboard, and image collecting device is for acquiring in classroom
Image information, and indoor image information will be taught to be transmitted to image processing apparatus, image processing apparatus includes image noise reduction list
Member, image enhancing unit, image sharpening unit and image smoothing unit；
Wherein, the output end of image collecting device is connect with the input terminal of image noise reduction unit, the output end of image noise reduction unit
It is connect with the input terminal of image enhancing unit, the output end of image enhancing unit is connect with the input terminal of image sharpening unit, figure
Output end as sharpening unit is connect with the input terminal of image smoothing unit, the output end and local area network communication of image smoothing unit
The input terminal of module connects.
Preferably, display device hang on classroom doorway wall, and the classroom temperature signal of temperature sensor acquisition passes through
Computer processor unit, image acquisition device classroom are transmitted to by local area network communications module after signal processing circuit processing
Interior image information is transmitted to computer processor unit by local area network communications module after image processing apparatus is handled, and calculates
The image information received and temperature information are transmitted to display device and shown by machine processing unit, and computer processor unit will
The image information and temperature information received is transmitted to storage device and is stored.
Preferably, display device is liquid crystal display.
Preferably, smart classroom monitoring system further includes a power supply, and power supply provides electric power for smart classroom monitoring system
It supports.
Preferably, power supply is sun-generated electric power.
Preferably, image collector is set to ccd image acquisition device.
Preferably, temperature sensor is thermal resistor.
Preferably, temperature sensor is temperature-sensitive galvanic couple.
Preferably, image collecting device, will be in classroom by the indoor image transmitting of the religion of acquisition to image processing apparatus
Image information be defined as two-dimensional function f (x, y), wherein x, y are space coordinates, image noise reduction unit to image f (x, y) into
The processing of row image noise reduction is g (x, y) by image noise reduction treated two-dimensional image function, wherein
；
Image enhancing unit carries out image definition enhancing processing to image g (x, y), and by image definition enhancing, treated
Two-dimensional image function is h (x, y), wherein
；
Image sharpening unit carries out image sharpening processing to image h (x, y), by image sharpening treated two-dimensional image function
For d (x, y), wherein
；
Image smoothing unit carries out picture smooth treatment to image d (x, y), the two-dimensional image function after picture smooth treatment
For s (x, y), smooth function is q (x, y),
；
；
Wherein , ﹡ is convolution symbol,For customized adjustable constant, smooth effect is to pass throughCome what is controlled；
Described image s (x, y) is transmitted to local area network communications module by image smoothing unit, and local area network communications module will receive
Image s (x, y) is transmitted to computer processor unit.
Compared with prior art, the present invention have it is following the utility model has the advantages that
(1) smart classroom monitoring system provided by the invention is passed using computer processor unit, local area network communications module, temperature
Sensor, signal processing circuit, image collecting device, image processing apparatus, display device and storage device, wherein at signal
The indoor temperature of religion that reason circuit can acquire temperature sensor is amplified, is filtered, to make temperature monitoring more
Accurately, image collecting device and image processing apparatus can be handled teaching indoor image information to be acquired simultaneously sharpening, and
Display device on the external wall of classroom can show the indoor image information of religion and temperature information, can make personnel outside classroom
Not entering classroom and knows the situation in classroom, storage device can store the indoor image information of religion and temperature information, in case
Later period calls；
(2) smart classroom monitoring system provided by the invention, image processing apparatus to the image of acquisition successively carry out image noise reduction,
Image enhancement, image sharpening, picture smooth treatment can efficiently, quickly extract the image information of image collecting device, can be improved
To the identification precision of religion indoor environment, efficiently reduces erroneous judgement and happen.
Detailed description of the invention
Fig. 1 is the schematic diagram of smart classroom monitoring system of the invention；
Fig. 2 is the circuit diagram of signal processing circuit of the invention；
Fig. 3 is the schematic diagram of image processing apparatus of the invention.
Appended drawing reference is as follows:
1- computer processor unit；2- local area network communications module；3- temperature sensor；4- signal processing circuit；5- Image Acquisition
Device；6- image processing apparatus；7- display device；8- storage device.
Specific embodiment
Smart classroom monitoring system provided by the invention is described in detail with reference to the accompanying drawings and examples.
As shown in Figure 1, smart classroom monitoring system provided by the invention includes computer processor unit (1), local Netcom
Believe module (2), temperature sensor (3), signal processing circuit (4), image collecting device (5), image processing apparatus (6), display
Device (7) and storage device (8)；
Wherein, the output end of temperature sensor (3) is connect with the input terminal of signal processing circuit (4), signal processing circuit (4)
Output end is connect with the input terminal of local area network communications module (2), the output end and image processing apparatus of image collecting device (5)
(6) input terminal connection, the output end of image processing apparatus (6) are connect with the input terminal of local area network communications module (2), local area network
The output end of communication module (2) is connect with the input terminal of computer processor unit (1), the output end of computer processor unit (1)
It is connect with the input terminal of display device (7), the output end of computer processor unit (1) is connect with the input terminal of storage device (8).
As above-mentioned further preferential, as shown in Fig. 2, temperature sensor (3) teaches indoor temperature information for acquiring,
The temperature signal of acquisition is converted into voltage signal V0, and voltage signal V0 is transmitted to signal processing circuit (4), V1 is to pass through
Signal processing circuit (4) treated voltage signal, signal processing circuit (4) include that signal amplification unit and signal filtering are single
Member, the output end of temperature sensor (3) and the input terminal of signal amplification unit connect, the output end and signal of signal amplification unit
The input terminal of filter unit connects, and the output end of signal filter unit is connect with the input terminal of local area network communications module (2), local
The output signal of signal filter unit is transmitted to the port ADC of computer processor unit (1) by Network Communication module (2).
Signal amplification unit includes integrated transporting discharging A1-A2, resistance R1-R6 and capacitor C1-C4, temperature sensor (3)
Output end is connect with the non-inverting input terminal of integrated transporting discharging A1, and one end of capacitor C1 is connect with the output end of integrated transporting discharging A1, capacitor
The other end of C1 is connect with the inverting input terminal of integrated transporting discharging A1, and one end of capacitor C1 is also connect with one end of resistance R1, capacitor
The other end of C1 is also connect with the other end of resistance R1, and the other end of resistance R1 is connect with one end of resistance R2, and resistance R2's is another
One end ground connection, one end of resistance R1 are also connect with one end of capacitor C2, and the other end of capacitor C2 is connect with one end of resistance R3, electricity
The other end ground connection of R3 is hindered, the other end of capacitor C2 is also connect with one end of resistance R4, the other end and integrated transporting discharging of resistance R4
The inverting input terminal of A2 connects, the non-inverting input terminal ground connection of integrated transporting discharging A2, one end of capacitor C3 and the reverse phase of integrated transporting discharging A2
Input terminal connection, the other end of capacitor C3 are connect with the output end of integrated transporting discharging A2, one end after capacitor C4 is in parallel with resistance R5
It is connect with the output end of integrated transporting discharging A2, the non-inverting input terminal of the other end after capacitor C4 is in parallel with resistance R5 and integrated transporting discharging A1
Connection, the other end after capacitor C4 is in parallel with resistance R5 are also connect with one end of resistance R6, the other end ground connection of resistance R6.
Signal filter unit includes resistance R7-R10, capacitor C5-C7 and integrated transporting discharging A3, signal amplification unit it is defeated
Outlet is connect with one end of resistance R7, and the output end of signal amplification unit is also connect with one end of capacitor C5, and capacitor C5's is another
End ground connection, the other end of resistance R7 are connect with one end of capacitor C6, the other end ground connection of capacitor C6, the other end and collection of resistance R7
It is connected at the inverting input terminal of amplifier A3, one end of resistance R8 is connect with the non-inverting input terminal of integrated transporting discharging A3, and resistance R8's is another
One end ground connection, one end after resistance R9 is in parallel with capacitor C7 are connect with the inverting input terminal of integrated transporting discharging A3, resistance R9 and capacitor
The other end after C7 is in parallel is connect with the output end of integrated transporting discharging A3, the other end after resistance R9 is in parallel with capacitor C7 also with resistance
One end of R10 connects, and one end of resistance R10 is connect with the output end of integrated transporting discharging A3, the other end of resistance R10 and local Netcom
Believe the input terminal connection of module (2), voltage signal V1 is transmitted to local area network communications module (2) to signal processing unit by treated
Input terminal, voltage signal V1 is transmitted to the port ADC of computer processor unit (1) by local area network communications module (2).
In above embodiment, the noise of signal processing circuit drifts about within 40nV as 0.5 μ V/ DEG C, integrated transporting discharging A1
For LT1028 amplifier, integrated transporting discharging A2 and integrated transporting discharging A3 are LT1097 amplifier, and the gain of signal amplification unit is by R1 and R2
Ratio determine, since the direct current offset of integrated transporting discharging A1 and drift will not influence the overall offset of circuit, so that electric
There are extremely low offset and drift in road.
The resistance value of resistance R1 is 10K Ω, and the resistance value of resistance R2 is 10 Ω, and the resistance value of resistance R3 is 100K Ω, resistance R4's
Resistance value is 100K Ω, and the resistance value of resistance R5 is 10K Ω, and the resistance value of resistance R6 is 10 Ω, and the resistance value of resistance R7 is 10K Ω, resistance
The resistance value of R8 is 15K Ω, and the resistance value of resistance R9 is 15K Ω, and the resistance value of resistance R10 is 12K Ω, and the capacitance of capacitor C1 is
The capacitance of 470pF, capacitor C2 are 1 μ F, and the capacitance of capacitor C3 is 1 μ F, and the capacitance of capacitor C4 is 470pF, capacitor C5's
Capacitance is 2 μ F, and the capacitance of capacitor C6 is 1.2 μ F, and the capacitance of capacitor C7 is 1.4 μ F.
Since the signal of temperature sensor (3) acquisition is faint voltage signal, thus signal amplification unit passes through resistance
The voltage V0 that R1-R6, capacitor C1-C4 and integrated transporting discharging A1-A2 export temperature sensor 2 amplifies processing, then again
Using resistance R7-R10, capacitor C5-C7 and integrated transporting discharging A3 carry out low-pass filtering treatment to by amplified voltage signal,
To improve the precision of temperature detection.
In above embodiment, using computer processor unit (1), local area network communications module (2), temperature sensor (3),
Signal processing circuit (4), image collecting device (5), image processing apparatus (6), display device (7) and storage device (8),
In, the indoor temperature of religion that signal processing circuit (4) can acquire temperature sensor (3) is amplified, is filtered, thus
Keep temperature monitoring more accurate, image collecting device (5) and image processing apparatus (6) can carry out the indoor image information of religion
It acquires and sharpening is handled, and the display device (7) on the external wall of classroom can show the indoor image information of religion and temperature
Information is spent, personnel outside classroom can be made not enter classroom and know the situation in classroom, storage device (8) can store in classroom
Image information and temperature information, in case the later period call.
As above-mentioned further preferential, as shown in figure 3, image collecting device (5) is set in classroom above blackboard, figure
Indoor image information is taught as acquisition device (5) are used to acquire, and indoor image information will be taught to be transmitted to image processing apparatus
(6), image processing apparatus (6) includes image noise reduction unit, image enhancing unit, image sharpening unit and image smoothing list
Member；
Wherein, the output end of image collecting device (5) is connect with the input terminal of image noise reduction unit, the output of image noise reduction unit
End is connect with the input terminal of image enhancing unit, and the output end of image enhancing unit is connect with the input terminal of image sharpening unit,
The output end of image sharpening unit is connect with the input terminal of image smoothing unit, the output end of image smoothing unit and local Netcom
Believe the input terminal connection of module (2).
In above embodiment, image processing apparatus (6) to the image of acquisition successively carry out image noise reduction, image enhancement,
Image sharpening, picture smooth treatment can efficiently, quickly extract the image information of image collecting device (5), can be improved to classroom
The identification precision of interior environment efficiently reduces erroneous judgement and happens.
In above embodiment, the purpose of image noise reduction unit and image intensification unit is to improve image collecting device
(5) quality of the image acquired removes the noise in image, makes edge clear, improve the interpretability of image, image sharpening list
The profile of image of the member compensation after image enhancement processing, enhances the edge of image and the part of Gray Level Jump, becomes image
It must be more clear, image smoothing unit will carry out gentle gradual change by image sharpening treated brightness of image, reduce mutation ladder
Degree, so as to improve picture quality.
When classroom is left unused, the personnel outside classroom can pass through the indoor temperature of the shown religion of display device (7) and figure
As information differentiates that the classroom is reviewed one's lessons if appropriate for oneself, in classroom for when imparting knowledge to students, the personnel outside classroom can to pass through display dress
It sets (7) and knows the indoor teaching affairs of religion, in classroom for when taking an examination, the personnel outside classroom can also to pass through display device (7)
Know the indoor testing situations of religion.
Specifically, display device (7) hang on classroom doorway wall, the classroom temperature signal of temperature sensor (3) acquisition
It is transmitted to computer processor unit (1) by local area network communications module (2) after signal processing circuit (4) processing, image is adopted
Acquisition means (5) acquisition teaches indoor image information to pass after image processing apparatus (6) processing by local area network communications module (2)
It transports to computer processor unit (1), the image information received and temperature information are transmitted to display by computer processor unit (1)
Device (7) is shown that the image information received and temperature information are transmitted to storage device by computer processor unit (1)
(8) it is stored.
Specifically, computer processor unit (1) is 8-bit microprocessor Atmega128.
In above embodiment, it is contemplated that the requirement of cost and process performance, computer processor unit 1 select low-power consumption 8
Bit microprocessor Atmega128, the chip hardware is resourceful, has the function of low-power consumption, more, cheap and powerful etc.
Advantage, Atmega128 itself has 128K bytes Flash memory, simultaneous with the eeprom memory of 4K byte, sensor
The data of acquisition are directly deposited in eeprom memory, and the port ADC inside Atmega128 has 8 channels, every channel
Resolution ratio is 10bit, and input voltage range is 0 ~ 5V, can satisfy the needs of the touring acquisition of monitoring data, while without another
Add AD conversion device, simplify periphery circuit design, reduces costs.
Specifically, display device (7) is liquid crystal display.
Specifically, smart classroom monitoring system further includes a power supply, and power supply provides electric power branch for smart classroom monitoring system
It holds.
Specifically, power supply is sun-generated electric power.
Specifically, image collecting device (5) is ccd image acquisition device.
Specifically, temperature sensor (3) is thermal resistor or temperature-sensitive galvanic couple.
Specifically, image collecting device (5) will be taught by the indoor image transmitting of the religion of acquisition to image processing apparatus (6)
Indoor image information is defined as two-dimensional function f (x, y), and wherein x, y are space coordinates, image noise reduction unit to image f (x,
Y) image noise reduction processing is carried out, is g (x, y) by image noise reduction treated two-dimensional image function, wherein
；
Image enhancing unit carries out image definition enhancing processing to image g (x, y), and by image definition enhancing, treated
Two-dimensional image function is h (x, y), wherein
；
In above embodiment, the purpose of image denoising unit and image intensification unit is to improve image capture module (4)
The quality of the image of acquisition removes the noise in image, makes edge clear, improve the interpretability of image.
Image sharpening unit carries out image sharpening processing to image h (x, y), by image sharpening treated two-dimensional image
Function is d (x, y), wherein
；
In above embodiment, by the comparison to Image neighborhood frequency, to protrude the high-frequency information of image, its low frequency is inhibited to believe
Breath.
The profile of image of the image sharpening unit compensation after image enhancement processing, the edge and gray scale for enhancing image are jumped
The part of change, becomes more fully apparent image.
Image smoothing unit carries out picture smooth treatment to image d (x, y), the two-dimensional image after picture smooth treatment
Function is s (x, y), and smooth function is q (x, y),
；
；
Wherein , ﹡ is convolution symbol,For customized adjustable constant, smooth effect is to pass throughCome what is controlled；
In above embodiment, image smoothing unit will carry out gentle gradual change by image sharpening treated brightness of image, subtract
Micromutation gradient, so as to improve picture quality.
Described image s (x, y) is transmitted to local area network communications module (2) by image smoothing unit, local area network communications module (2)
The image s (x, y) received is transmitted to computer processor 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 classroom monitoring system, which is characterized in that the smart classroom monitoring system includes computer processor unit
(1), local area network communications module (2), temperature sensor (3), signal processing circuit (4), image collecting device (5), image procossing
Device (6), display device (7) and storage device (8)；
Wherein, the output end of the temperature sensor (3) is connect with the input terminal of the signal processing circuit (4), the signal
The output end of processing circuit (4) is connect with the input terminal of the local area network communications module (2), described image acquisition device (5)
Output end is connect with the input terminal of described image processing unit (6), the output end and the local of described image processing unit (6)
The input terminal of Network Communication module (2) connects, the output end and the computer processor unit of the local area network communications module (2)
(1) input terminal connection, the output end of the computer processor unit (1) are connect with the input terminal of the display device (7), institute
The output end for stating computer processor unit (1) is connect with the input terminal of the storage device (8)；
The temperature sensor (3) teaches indoor temperature information for acquiring, and the temperature signal of acquisition is converted to voltage signal
V0, and voltage signal V0 is transmitted to the signal processing circuit (4), V1 is after the signal processing circuit (4) processing
Voltage signal, the signal processing circuit (4) includes signal amplification unit and signal filter unit, the temperature sensor
(3) output end is connect with the input terminal of the signal amplification unit, the output end of the signal amplification unit and the signal
The input terminal of filter unit connects, the output end of the signal filter unit and the input terminal of the local area network communications module (2)
The output signal of the signal filter unit is transmitted to the computer disposal and filled by connection, the local area network communications module (2)
Set the port ADC of (1)；
The signal amplification unit includes integrated transporting discharging A1-A2, resistance R1-R6 and capacitor C1-C4, the temperature sensor
(3) output end is connect with the non-inverting input terminal of integrated transporting discharging A1, and one end of capacitor C1 is connect with the output end of integrated transporting discharging A1,
The other end of capacitor C1 is connect with the inverting input terminal of integrated transporting discharging A1, and one end of capacitor C1 is also connect with one end of resistance R1,
The other end of capacitor C1 is also connect with the other end of resistance R1, and the other end of resistance R1 is connect with one end of resistance R2, resistance R2
Other end ground connection, one end of resistance R1 also connect with one end of capacitor C2, the other end of capacitor C2 and one end company of resistance R3
Connect, the other end of resistance R3 ground connection, the other end of capacitor C2 also connect with one end of resistance R4, the other end of resistance R4 with integrate
The inverting input terminal of amplifier A2 connects, and the non-inverting input terminal ground connection of integrated transporting discharging A2, one end of capacitor C3 is with integrated transporting discharging A2's
Inverting input terminal connection, the other end of capacitor C3 is connect with the output end of integrated transporting discharging A2, after capacitor C4 is in parallel with resistance R5
One end is connect with the output end of integrated transporting discharging A2, and the other end after capacitor C4 is in parallel with resistance R5 is same mutually defeated with integrated transporting discharging A1's
Enter end connection, the other end after capacitor C4 is in parallel with resistance R5 is also connect with one end of resistance R6, the other end ground connection of resistance R6；
The signal filter unit includes resistance R7-R10, capacitor C5-C7 and integrated transporting discharging A3, the signal amplification unit
Output end connect with one end of resistance R7, the output end of the signal amplification unit is also connect with one end of capacitor C5, capacitor
The other end of C5 is grounded, and the other end of resistance R7 is connect with one end of capacitor C6, and the other end ground connection of capacitor C6, resistance R7's is another
One end is connect with the inverting input terminal of integrated transporting discharging A3, and one end of resistance R8 is connect with the non-inverting input terminal of integrated transporting discharging A3, electricity
The other end ground connection of R8 is hindered, one end after resistance R9 is in parallel with capacitor C7 is connect with the inverting input terminal of integrated transporting discharging A3, resistance
The other end after R9 is in parallel with capacitor C7 is connect with the output end of integrated transporting discharging A3, the other end after resistance R9 is in parallel with capacitor C7
Also connect with one end of resistance R10, one end of resistance R10 is connect with the output end of integrated transporting discharging A3, the other end of resistance R10 with
The input terminal of the local area network communications module (2) connects, and by treated, voltage signal V1 is transmitted to the signal processing unit
The voltage signal V1 is transmitted to described by the input terminal of the local area network communications module (2), the local area network communications module (2)
The port ADC of computer processor unit (1).
2. smart classroom monitoring system according to claim 1, which is characterized in that described image acquisition device (5) setting
In above blackboard, described image acquisition device (5) teaches indoor image information for acquisition, and the religion is indoor in classroom
Image information is transmitted to described image processing unit (6), and described image processing unit (6) includes image noise reduction unit, image increasing
Strong unit, image sharpening unit and image smoothing unit；
Wherein, the output end of described image acquisition device (5) is connect with the input terminal of described image noise reduction unit, described image drop
The output end of unit of making an uproar is connect with the input terminal of described image enhancement unit, and the output end and described image of image enhancing unit are sharp
Change the input terminal connection of unit, the output end that described image sharpens unit is connect with the input terminal of described image smooth unit, institute
The output end for stating image smoothing unit is connect with the input terminal of the local area network communications module (2).
3. smart classroom monitoring system according to claim 1, which is characterized in that the display device (7) hang on religion
The classroom temperature signal of room doorway wall, temperature sensor (3) acquisition leads to after the signal processing circuit (4) processing
It crosses the local area network communications module (2) to be transmitted to the computer processor unit (1), described image acquisition device (5) acquisition religion
Indoor image information is transmitted to institute by the local area network communications module (2) after described image processing unit (6) are handled
It states computer processor unit (1), the image information received and temperature information are transmitted to institute by the computer processor unit (1)
It states display device (7) to be shown, the image information received and temperature information are transmitted to by the computer processor unit (1)
The storage device (8) is stored.
4. smart classroom monitoring system according to claim 1, which is characterized in that the display device (7) is liquid crystal
Show device.
5. smart classroom monitoring system according to claim 1, which is characterized in that the smart classroom monitoring system is also wrapped
A power supply is included, the power supply provides electric power support for the smart classroom monitoring system.
6. smart classroom monitoring system according to claim 5, which is characterized in that the power supply is sun-generated electric power.
7. smart classroom monitoring system according to claim 1, which is characterized in that described image acquisition device (5) is CCD
Image collecting device.
8. smart classroom monitoring system according to claim 1, which is characterized in that the temperature sensor (3) is temperature-sensitive
Resistor.
9. smart classroom monitoring system according to claim 1, which is characterized in that the temperature sensor (3) is temperature-sensitive
Galvanic couple.
10. smart classroom monitoring system according to claim 2, which is characterized in that described image acquisition device (5) will be adopted
The indoor image transmitting of the religion of collection will teach indoor image information to be defined as two-dimensional function f to described image processing unit (6)
(x, y), wherein x, y are space coordinates, and described image noise reduction unit carries out image noise reduction processing to image f (x, y), by figure
As the two-dimensional image function after noise reduction process be g (x, y), wherein
；
Described image enhancement unit carries out image definition enhancing processing to image g (x, y), handles by image definition enhancing
Two-dimensional image function afterwards is h (x, y), wherein
；
Described image sharpens unit and carries out image sharpening processing to image h (x, y), by image sharpening treated two-dimensional image
Function is d (x, y), wherein
；
Described image smooth unit carries out picture smooth treatment to image d (x, y), the two-dimensional image after picture smooth treatment
Function is s (x, y), and smooth function is q (x, y),
；
；
Wherein , ﹡ is convolution symbol,For customized adjustable constant, smooth effect is to pass throughCome what is controlled；
Described image s (x, y) is transmitted to the local area network communications module (2) by described image smooth unit, the local Netcom
Believe that the image s (x, y) received is transmitted to the computer processor unit (1) by module (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811069865.8A CN109140697A (en) | 2018-09-13 | 2018-09-13 | A kind of smart classroom monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811069865.8A CN109140697A (en) | 2018-09-13 | 2018-09-13 | A kind of smart classroom monitoring system |
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| CN109140697A true CN109140697A (en) | 2019-01-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811069865.8A Withdrawn CN109140697A (en) | 2018-09-13 | 2018-09-13 | A kind of smart classroom monitoring system |
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| CN (1) | CN109140697A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110189444A (en) * | 2019-05-28 | 2019-08-30 | 天津城建大学 | A kind of access control system based on wireless network |
| CN110286623A (en) * | 2019-07-04 | 2019-09-27 | 山东中医药高等专科学校 | A kind of classroom monitoring system based on Internet of Things |
| CN110444059A (en) * | 2019-08-01 | 2019-11-12 | 山东中医药高等专科学校 | A kind of teaching auxiliary system based on wireless network |
| CN110706527A (en) * | 2019-11-11 | 2020-01-17 | 郑州财经学院 | Intelligent English teaching system |
| CN117928077A (en) * | 2024-03-25 | 2024-04-26 | 青岛中弘数字技术有限公司 | Temperature signal acquisition circuit for air conditioner |
-
2018
- 2018-09-13 CN CN201811069865.8A patent/CN109140697A/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110189444A (en) * | 2019-05-28 | 2019-08-30 | 天津城建大学 | A kind of access control system based on wireless network |
| CN110286623A (en) * | 2019-07-04 | 2019-09-27 | 山东中医药高等专科学校 | A kind of classroom monitoring system based on Internet of Things |
| CN110444059A (en) * | 2019-08-01 | 2019-11-12 | 山东中医药高等专科学校 | A kind of teaching auxiliary system based on wireless network |
| CN110706527A (en) * | 2019-11-11 | 2020-01-17 | 郑州财经学院 | Intelligent English teaching system |
| CN117928077A (en) * | 2024-03-25 | 2024-04-26 | 青岛中弘数字技术有限公司 | Temperature signal acquisition circuit for air conditioner |
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