CN109302579A - A kind of video conference place intelligent monitor system - Google Patents
A kind of video conference place intelligent monitor system Download PDFInfo
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- CN109302579A CN109302579A CN201811338422.4A CN201811338422A CN109302579A CN 109302579 A CN109302579 A CN 109302579A CN 201811338422 A CN201811338422 A CN 201811338422A CN 109302579 A CN109302579 A CN 109302579A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/14—Systems for two-way working
- H04N7/15—Conference systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/14—Picture signal circuitry for video frequency region
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/14—Picture signal circuitry for video frequency region
- H04N5/20—Circuitry for controlling amplitude response
- H04N5/202—Gamma control
Abstract
The present invention provides a kind of video conference place intelligent monitor system, utilize central processing unit, sound transducer, signal processing circuit, light sensor, image capture module, image processing module, microphone adjustment module, light adjustment module, memory module, wireless communication module, the sound and light of display module and carbon dioxide sensor automatic adjustment video conference phenomenon, so that the image of the video conference place of image capture module acquisition is relatively sharp, and then keep the effect of video conference place more preferable, image processing module successively carries out image smoothing to the image that image capture module acquires, image enhancement and image sharpening processing, it can be efficient, quickly extract the image information of the video conference place of image capture module acquisition, the identification precision to image can be improved, erroneous judgement is efficiently reduced to happen.
Description
Technical field
The present invention relates to intelligence to adjust testing field more particularly to a kind of video conference place intelligent monitor system.
Background technique
Video conference refers to that the people positioned at two or more places are handed over face-to-face by communication equipment and network
The meeting of what is said or talked about.Different according to place number of attending a meeting, video conference can be divided into point-to-point meeting and multipoint conference.In daily life
Individual does not require talk content security, meeting quality, parliamentary dimension, can be soft using the video as Tencent QQ
Part carries out Video chat.And the business video meeting of government bodies, enterprise and institution, it is desirable that have stablize safety network,
The conditions such as reliable meeting quality, formal conferencing environment then need to set up special view using the video conference device of profession
Frequency conference system.It is shown since such video conferencing system will use TV, also referred to as video conference, video signal meeting
View.Using video conferencing system, shape that participant can hear the sound in other meeting-place, see other meeting-place meeting-place participants
As, movement and expression, electronic presentations content can also be sent, participant is made to have feeling on the spot in person.
But existing video conference terminal intelligence is not strong, for example indoor light can be varied, and intelligent terminal is not
Can be corresponding therewith, therefore the display effect of video conference is with regard to bad, it is necessary to this is improved.
Summary of the invention
Therefore, in order to overcome the above problem, the present invention provides a kind of video conference place intelligent monitor system, utilizes center
Processing unit, sound transducer, signal processing circuit, light sensor, image capture module, image processing module, microphone
Adjustment module, light adjustment module, memory module, wireless communication module, display module and carbon dioxide sensor are adjusted automatically
The sound and light of video conference phenomenon are saved, so that the image of the video conference place of image capture module acquisition is relatively sharp,
And then keeping the effect of video conference place more preferable, meeting-place staff can also know the carbon dioxide in meeting-place by its mobile phone
Concentration signal, in order in time be meeting-place ventilation.
A kind of video conference place intelligent monitor system according to the present invention comprising central processing unit, sound sensor
Device, signal processing circuit, light sensor, image capture module, image processing module, microphone adjustment module, light are adjusted
Module, memory module, wireless communication module, display module and carbon dioxide sensor.
Wherein, the output end of sound transducer and the input terminal of signal processing circuit connect, the output of image capture module
End is connect with the input terminal of image processing module, the output end of signal processing circuit, the output end of light sensor, carbon dioxide
The output end of sensor and the output end of image processing module are connect with the input terminal of central processing unit, and light adjusts mould
The input terminal of block, the input terminal of memory module, the input terminal of the input terminal of wireless communication module and microphone adjustment module are equal
It is connect with the output end of central processing unit, the output end of wireless communication module and the input terminal of display module connect.
Sound transducer is set to video conference place, for acquiring the voice signal of video conference place；Light level
Device is set to video conference place, for acquiring the light signal of video conference place；Carbon dioxide sensor is set to video
Meeting meeting-place, for acquiring the gas concentration lwevel signal of video conference place；Image capture module is set to video conference meeting
, for acquiring the image information of video conference place.
Preferably, sound transducer is used to acquire the voice signal of video conference place, and sound transducer is by acquisition
It is V0 that voice signal, which is converted to voltage signal, and voltage signal V0 is transmitted to signal processing circuit, and V1 is by signal processing
Voltage signal after processing of circuit, signal processing circuit include signal amplification unit and signal filter unit, sound transducer
The connection of the input terminal of output end and signal amplification unit, the output end of signal amplification unit and the input terminal of signal filter unit connect
It connects, the output end of signal filter unit and the port ADC of central processing unit connect.
Preferably, the signal amplification unit include integrated transporting discharging A1-A3, resistance R1-R14, diode D1-D2 and
Capacitor C1-C7；
Wherein, the output end of sound transducer is connect with one end of resistance R1, and the other end of resistance R1 is anti-with integrated transporting discharging A1's
The connection of phase input terminal, the other end of resistance R1 are also connect with one end of capacitor C1, and one end ground connection of resistance R2, resistance R2's is another
End is connect with the non-inverting input terminal of integrated transporting discharging A1, and the other end of capacitor C1 is connect with the output end of integrated transporting discharging A1, resistance R3
One end connect with -7.5V DC voltage, the other end of resistance R3 is connect with the output end of integrated transporting discharging A1, and resistance R3's is another
End is also connect with one end of resistance R4, and the other end of resistance R4 is connect with the non-inverting input terminal of integrated transporting discharging A2, and the one of resistance R6
End ground connection, the other end of resistance R6 are connect with the inverting input terminal of integrated transporting discharging A2, the other end of resistance R6 and the one of resistance R5
End connection, the other end of resistance R5 are connect with the cathode of diode D1, the output end of the anode and integrated transporting discharging A2 of diode D1
Connection, the cathode of diode D1 are also connect with one end of capacitor C2, and the cathode of diode D2 and the output end of integrated transporting discharging A2 connect
It connects, the cathode of diode D1 is also connect with the anode of diode D2, one end ground connection of resistance R8, the other end and capacitor of resistance R8
The other end of C2 connects, and the other end of resistance R8 is also connect with one end of capacitor C3, one end of resistance R7 and the cathode of diode
Connection, the other end of resistance R7 are connect with the other end of capacitor C3, and the other end of resistance R7 is also connect with one end of resistance R9, electricity
The other end of resistance R9 is connect with one end of resistance R10, and one end of resistance R9 is also connect with one end of capacitor C4, and capacitor C4's is another
End is connect with the other end of resistance R10, and one end ground connection of capacitor C5, the other end of capacitor C5 is connect with the other end of resistance R9,
The other end of resistance R10 is also connect with the non-inverting input terminal of integrated transporting discharging A3, and one end ground connection of resistance R13, resistance R13's is another
End is connect with one end of resistance R11, and the other end of resistance R11 is connect with the inverting input terminal of integrated transporting discharging A3, and resistance R13's is another
One end is connect with one end of resistance R12, one end connection of the other end capacitor C6 of resistance R12, one end of capacitor C6 and capacitor C7
One end connection, one end ground connection of resistance R14, the other end of resistance R14 connect with one end of capacitor C7, and resistance R14's is another
End is also connect with the other end of capacitor C6, and the other end of capacitor C7 is connect with the output end of integrated transporting discharging A3.
Preferably, the signal filter unit includes resistance R15-R21, capacitor C8-C9 and integrated transporting discharging A4-A6；
Wherein, the output end of signal amplification unit is connect with one end of resistance R15, the other end of resistance R15 and the one of resistance R17
It being connect after end is in parallel with the non-inverting input terminal of integrated transporting discharging A4, the other end of resistance R17 is connect with the output end of integrated transporting discharging A4,
One end of resistance R16 is grounded, and is connect after the other end of resistance R16 is in parallel with resistance R21 with the non-inverting input terminal of integrated transporting discharging A4,
The other end of resistance R21 is connect with the output end of integrated transporting discharging A4, and the output end of the other end of resistance R17 and integrated transporting discharging A4 are simultaneously
It is connect after connection with one end of resistance R18, the reverse phase after the other end of resistance R18 is in parallel with one end of capacitor C8 with integrated transporting discharging A5
Input terminal connection connect with one end of resistance R19 after the other end of capacitor C8 is in parallel with the output end of integrated transporting discharging A5, integrates fortune
The non-inverting input terminal ground connection of A5 is put, it is defeated with the reverse phase of integrated transporting discharging A6 after the other end of resistance R19 is in parallel with one end of capacitor C9
Enter end connection, the non-inverting input terminal ground connection of integrated transporting discharging A6, the other end of capacitor C9 is connect with the output end of integrated transporting discharging A6, electricity
One end of resistance R20 is connect with the inverting input terminal of integrated transporting discharging A4, and the other end of resistance R20 and the output end of integrated transporting discharging A6 connect
It connects, one end of resistance R21 is connect with the non-inverting input terminal of integrated transporting discharging A4, and the other end of resistance R21 is defeated with integrated transporting discharging A5's
Outlet connection, the output end of integrated transporting discharging A6 and the port ADC of central processing unit connect, and the signal processing unit will be handled
Voltage signal V1 afterwards is transmitted to the port ADC of central processing unit.
Preferably, image processing module includes image smoothing unit, image enhancing unit and image sharpening unit.
Wherein, the output end of image capture module is connect with the input terminal of image smoothing unit, image smoothing unit it is defeated
The connection of the input terminal of outlet and image enhancing unit, the output end of image enhancing unit and the input terminal of image sharpening unit connect
It connects, the output end of image sharpening unit and the input terminal of central processing unit connect.
Preferably, the image definition that image capture module is transmitted to the video conference place of image processing module is two
It ties up function f (x, y), wherein x, y are space coordinates, and image smoothing unit carries out at image definition enhancing image f (x, y)
Reason is g (x, y) by image definition enhancing treated two-dimensional image function, wherein smooth function is q (x, y),
；
；
Wherein , ﹡ is convolution symbol,For customized adjustable constant, smooth effect is to pass throughCome what is controlled.
Preferably, image enhancing unit carries out brightness of image enhancing processing to image g (x, y), increases by brightness of image
Treated by force, and two-dimensional image function is h (x, y), wherein
。
Preferably, image sharpening unit carries out image sharpening processing to image h (x, y), after image sharpening is handled
Two-dimensional image function be d (x, y), wherein
；
Image processing module will treated image d (x, y) is transmitted to central processing unit, central processing unit will receive
Module transfer to display module is shown image information by wireless communication, the image information that central processing unit will receive
Memory module is transmitted to be stored.
Preferably, central processing unit is 8-bit microprocessor Atmega128, and display module is LCD display unit, nothing
Line communication module is WiFi module.
Preferably, when carrying out video conference, sound transducer is used to acquire the voice signal of video conference place, and
By the transmission of sound signals of acquisition to signal processing circuit, signal processing circuit passes after handling the voice signal received
Central processing unit is transported to, central processing unit adjusts microphone according to the voice signal control microphone adjustment module received
Volume is to preset sound threshold value；Light sensor is used to acquire the light signal of video conference place, and the light of acquisition is believed
It number is transmitted to central processing unit, central processing unit adjusts light according to the light signal control light adjustment module received
To default light threshold value；Carbon dioxide sensor is used to acquire the gas concentration lwevel signal of video conference place, and will acquisition
Gas concentration lwevel signal be transmitted to central processing unit；Image capture module is used to acquire the image letter of video conference place
Breath, and acquired image information is transmitted to image processing module, image processing module carries out the image information received
Central processing unit is transmitted to after image procossing, module passes the image information received to central processing unit by wireless communication
Display module is transported to, the image information received is also transmitted to memory module and stored by central processing unit, video conference
Meeting-place intelligent monitor system further includes a wireless transport module, and central processing unit leads to the gas concentration lwevel signal received
It crosses wireless transport module and is transmitted to the mobile phone of meeting-place staff and show.
Compared with prior art, the present invention have it is following the utility model has the advantages that
(1) video conference place intelligent monitor system provided by the invention, utilizes central processing unit, sound transducer, signal
Processing circuit, image capture module, image processing module, microphone adjustment module, light adjustment module, is deposited light sensor
The sound and light for storing up module, wireless communication module and display module automatic adjustment video conference phenomenon, so that Image Acquisition
The image of the video conference place of module acquisition is relatively sharp, and then keeps the effect of video conference place more preferable；
(2) video conference place intelligent monitor system provided by the invention, image processing module acquire image capture module
Image successively carries out image smoothing, image enhancement and image sharpening processing, can efficiently, quickly extract image capture module acquisition
Video conference place image information, the identification precision to image can be improved, efficiently reduce erroneous judgement and happen；
(3) meeting-place staff can also know the gas concentration lwevel signal in meeting-place by its mobile phone, in order to be in time
Meeting-place ventilation.
Detailed description of the invention
Fig. 1 is the schematic diagram of video conference place intelligent monitor system of the invention.
Fig. 2 is the circuit diagram of signal processor of the invention；
Fig. 3 is the schematic diagram of image processing module of the invention.
Appended drawing reference:
1- central processing unit；2- sound transducer；3- signal processing circuit；4- light sensor；5- image capture module；6-
Image processing module；7- microphone adjustment module；8- light adjustment module；9- memory module；10- wireless communication module；11- is aobvious
Show module；12- carbon dioxide sensor.
Specific embodiment
Video conference place intelligent monitor system of the invention is described in detail with reference to the accompanying drawings and examples.
As shown in Figure 1, video conference place intelligent monitor system provided by the invention includes central processing unit 1, sound
Sensor 2, signal processing circuit 3, light sensor 4, image capture module 5, image processing module 6, microphone adjustment module
7, light adjustment module 8, memory module 9, wireless communication module 10, display module 11 and carbon dioxide sensor 12.
Wherein, the output end of sound transducer 2 is connect with the input terminal of signal processing circuit 3, image capture module 5 it is defeated
Outlet is connect with the input terminal of image processing module 6, the output end of signal processing circuit 3, the output end of light sensor 4, two
The output end of the output end and image processing module 6 that aoxidize carbon sensor 12 is connect with the input terminal of central processing unit 1,
The input terminal of light adjustment module 8, the input terminal of memory module 9, the input terminal of wireless communication module 10 and microphone are adjusted
The input terminal of module 7 is connect with the output end of central processing unit 1, the output end and display module 11 of wireless communication module 10
Input terminal connection.
Sound transducer 2 is set to video conference place, for acquiring the voice signal of video conference place；Light level
Device 3 is set to video conference place, for acquiring the light signal of video conference place；Carbon dioxide sensor 12 is set to view
Frequency meeting meeting-place, for acquiring the gas concentration lwevel signal of video conference place；Image capture module 4 is set to video conference
Meeting-place, for acquiring the image information of video conference place.
Wherein, display module 11 is located at another party meeting-place of video conference.
In above embodiment, central processing unit 1, sound transducer 2, signal processing circuit 3, light sensor are utilized
4, image capture module 5, image processing module 6, microphone adjustment module 7, light adjustment module 8, memory module 9, channel radio
Believe that module 10, display module 11 and carbon dioxide sensor 12 automatically adjust the sound and light of video conference phenomenon, so that
The image for the video conference place that image capture module 5 acquires is relatively sharp, and then keeps the effect of video conference place more preferable.
Video conference place intelligent monitor system further includes a wireless transport module, and central processing unit 1 will receive
Gas concentration lwevel signal shows that meeting-place staff can also by the mobile phone that wireless transport module is transmitted to staff
The gas concentration lwevel signal in meeting-place is enough known by its mobile phone, in order in time be meeting-place ventilation.
Memory module 9 further includes a usb data port, and staff can be known by the USB data interface by figure
As the real time data and historical data of treated the image information of processing module 6, studies, analyzes convenient for staff's later period.
As shown in Fig. 2, sound transducer 2 is used to acquire the voice signal of video conference place, sound transducer 2 will be acquired
Voice signal to be converted to voltage signal be V0, and voltage signal V0 is transmitted to signal processing circuit 3, V1 be by signal at
Treated the voltage signal of circuit 3 is managed, signal processing circuit 3 includes signal amplification unit and signal filter unit, sound sensor
The input terminal of the output end of device 2 and signal amplification unit connects, and the output end of signal amplification unit is defeated with signal filter unit
Enter end connection, the output end of signal filter unit is connect with the port ADC of central processing unit 1.
Specifically, signal amplification unit includes integrated transporting discharging A1-A3, resistance R1-R14, diode D1-D2 and capacitor
C1-C7；
Wherein, the output end of sound transducer 2 is connect with one end of resistance R1, and the other end of resistance R1 is anti-with integrated transporting discharging A1's
The connection of phase input terminal, the other end of resistance R1 are also connect with one end of capacitor C1, and one end ground connection of resistance R2, resistance R2's is another
End is connect with the non-inverting input terminal of integrated transporting discharging A1, and the other end of capacitor C1 is connect with the output end of integrated transporting discharging A1, resistance R3
One end connect with -7.5V DC voltage, the other end of resistance R3 is connect with the output end of integrated transporting discharging A1, and resistance R3's is another
End is also connect with one end of resistance R4, and the other end of resistance R4 is connect with the non-inverting input terminal of integrated transporting discharging A2, and the one of resistance R6
End ground connection, the other end of resistance R6 are connect with the inverting input terminal of integrated transporting discharging A2, the other end of resistance R6 and the one of resistance R5
End connection, the other end of resistance R5 are connect with the cathode of diode D1, the output end of the anode and integrated transporting discharging A2 of diode D1
Connection, the cathode of diode D1 are also connect with one end of capacitor C2, and the cathode of diode D2 and the output end of integrated transporting discharging A2 connect
It connects, the cathode of diode D1 is also connect with the anode of diode D2, one end ground connection of resistance R8, the other end and capacitor of resistance R8
The other end of C2 connects, and the other end of resistance R8 is also connect with one end of capacitor C3, one end of resistance R7 and the cathode of diode
Connection, the other end of resistance R7 are connect with the other end of capacitor C3, and the other end of resistance R7 is also connect with one end of resistance R9, electricity
The other end of resistance R9 is connect with one end of resistance R10, and one end of resistance R9 is also connect with one end of capacitor C4, and capacitor C4's is another
End is connect with the other end of resistance R10, and one end ground connection of capacitor C5, the other end of capacitor C5 is connect with the other end of resistance R9,
The other end of resistance R10 is also connect with the non-inverting input terminal of integrated transporting discharging A3, and one end ground connection of resistance R13, resistance R13's is another
End is connect with one end of resistance R11, and the other end of resistance R11 is connect with the inverting input terminal of integrated transporting discharging A3, and resistance R13's is another
One end is connect with one end of resistance R12, one end connection of the other end capacitor C6 of resistance R12, one end of capacitor C6 and capacitor C7
One end connection, one end ground connection of resistance R14, the other end of resistance R14 connect with one end of capacitor C7, and resistance R14's is another
End is also connect with the other end of capacitor C6, and the other end of capacitor C7 is connect with the output end of integrated transporting discharging A3.
Specifically, signal filter unit includes resistance R15-R21, capacitor C8-C9 and integrated transporting discharging A4-A6；
Wherein, the output end of signal amplification unit is connect with one end of resistance R15, the other end of resistance R15 and the one of resistance R17
It being connect after end is in parallel with the non-inverting input terminal of integrated transporting discharging A4, the other end of resistance R17 is connect with the output end of integrated transporting discharging A4,
One end of resistance R16 is grounded, and is connect after the other end of resistance R16 is in parallel with resistance R21 with the non-inverting input terminal of integrated transporting discharging A4,
The other end of resistance R21 is connect with the output end of integrated transporting discharging A4, and the output end of the other end of resistance R17 and integrated transporting discharging A4 are simultaneously
It is connect after connection with one end of resistance R18, the reverse phase after the other end of resistance R18 is in parallel with one end of capacitor C8 with integrated transporting discharging A5
Input terminal connection connect with one end of resistance R19 after the other end of capacitor C8 is in parallel with the output end of integrated transporting discharging A5, integrates fortune
The non-inverting input terminal ground connection of A5 is put, it is defeated with the reverse phase of integrated transporting discharging A6 after the other end of resistance R19 is in parallel with one end of capacitor C9
Enter end connection, the non-inverting input terminal ground connection of integrated transporting discharging A6, the other end of capacitor C9 is connect with the output end of integrated transporting discharging A6, electricity
One end of resistance R20 is connect with the inverting input terminal of integrated transporting discharging A4, and the other end of resistance R20 and the output end of integrated transporting discharging A6 connect
It connects, one end of resistance R21 is connect with the non-inverting input terminal of integrated transporting discharging A4, and the other end of resistance R21 is defeated with integrated transporting discharging A5's
Outlet connection, the output end of integrated transporting discharging A6 are connect with the port ADC of central processing unit 1, and the signal processing unit will be located
Voltage signal V1 after reason is transmitted to the port ADC of central processing unit 1.
In above embodiment, the noise of signal processing circuit drifts about within 50nV as 0.4 μ V/ DEG C, integrated transporting discharging A1
For LT1007 low drifting amplifier, integrated transporting discharging A2, A3 are LT1230 high speed amplifier, and integrated transporting discharging A4, A5 and A6 are
LT1097 amplifier, since direct current offset and the drift of integrated transporting discharging A1 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 1K Ω, and the resistance value of resistance R2 is 100K Ω, and the resistance value of resistance R3 is 10K Ω, resistance R4's
Resistance value is 1.5K Ω, and the resistance value of resistance R5 is 750 Ω, and the resistance value of R6 is 750 Ω, and the resistance value of resistance R7 is 2K Ω, resistance R8's
Resistance value is 5.1K Ω, and the resistance value of resistance R9 is 750 Ω, and the resistance value of resistance R10 is 750 Ω, and the resistance value of resistance R11 is 1K Ω, electricity
The resistance value for hindering R12 is 750 Ω, and the resistance value of resistance R13 is 750 Ω, and the resistance value of resistance R14 is 5.1K Ω, and the resistance value of resistance R15 is
The resistance value of 1.7K Ω, resistance R16 are 4.7K Ω, and the resistance value of resistance R17 is 10K Ω, and the resistance value of resistance R18 is 5K Ω, resistance R19
Resistance value be 1K Ω, the resistance value of resistance R20 is 5K Ω, and the resistance value of resistance R21 is 5K Ω, and the capacitance for holding C1 is 50pF, capacitor
The capacitance of C2 is 390pF, and the capacitance of C3 is 390pF, and the capacitance of capacitor C4 is 470pF, and the capacitance of capacitor C5 is
The capacitance of 2200pF, capacitor C6 are 390pF, and the capacitance of capacitor C7 is 470pF, and the capacitance of capacitor C8 is 260pF, capacitor
The capacitance of C9 is that the model of 470pF, diode D1 and diode D2 are 1N4148.
Since the signal that sound transducer 2 acquires is faint voltage signal, thus signal amplification unit passes through resistance R1-
The voltage V0 that R14, capacitor C1-C6, diode D1-D2 and integrated transporting discharging A1-A3 export sound transducer 2 amplifies place
Reason, is only had by the signal amplification unit that resistance R1-R14, capacitor C1-C7, diode D1-D2 and integrated transporting discharging A1-A3 are constituted
The noise of 50nV in offset, 100pA bias current and the broadband 0.1Hz to 10Hz within the drift of 0.5 μ V/ DEG C, 5 μ V.Wherein,
Signal filter unit is using resistance R15-R21, capacitor C8-C9 and integrated transporting discharging A4-A6 to by amplified voltage signal
Low-pass filtering treatment is carried out, to improve the precision of sound detection.
As shown in figure 3, image processing module 6 includes image smoothing unit, image enhancing unit and image sharpening unit；
Wherein, the output end of image capture module 5 is connect with the input terminal of image smoothing unit, the output end of image smoothing 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 central processing unit 1.
Specifically, the image definition that image capture module 5 is transmitted to the video conference place of image processing module 6 is two
It ties up function f (x, y), wherein x, y are space coordinates, and image smoothing unit carries out at image definition enhancing image f (x, y)
Reason is g (x, y) by image definition enhancing treated two-dimensional image function, wherein smooth function is q (x, y),
；
；
Wherein , ﹡ is convolution symbol,For customized adjustable constant, smooth effect is to pass throughCome what is controlled.
Specifically, image enhancing unit carries out brightness of image enhancing processing to image g (x, y), enhances by brightness of image
Treated, and two-dimensional image function is h (x, y), wherein
。
Specifically, image sharpening unit carries out image sharpening processing to image h (x, y), and 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.
By treated, image d (x, y) is transmitted to central processing unit 1 to image processing module 6, and central processing unit 1 will
Module 10 is transmitted to display module 11 and is shown the image information received by wireless communication, and central processing unit 1 will connect
The image information received is transmitted to memory module 9 and is stored.
Specifically, central processing unit 1 is 8-bit microprocessor Atmega128, and display module 11 is LCD display unit, nothing
Line communication module 10 is WiFi module.
In above embodiment, it is contemplated that the requirement of cost and process performance, central processing unit 1 select low-power consumption 8
Microprocessor Atmega128, the chip hardware is resourceful, has the function of that low-power consumption, more, cheap and powerful etc. are excellent
Point, Atmega128 itself has 128K bytes Flash memory, simultaneous with the eeprom memory of 4K byte, sound sensor
The data that device 2 acquires are directly deposited in eeprom memory, and the port ADC inside Atmega128 has 8 channels, are often led to
The resolution ratio in road be 10bit, input voltage range be 0 ~ 5V, can satisfy the needs of the touring acquisition of monitoring data, at the same also without
AD conversion device need to separately be added, periphery circuit design is simplified, reduce costs.
LCD display unit use 3.3V power voltage supply, in order to the I/O of microprocessor Atmega128 mouth electrical level match,
LCD display unit is communicated with the interface of microprocessor Atmega128 using serial line interface.
Specifically, LCD display unit 20pinLCD1286HZ, WiFi module are VT6656 module.
WiFi is as a kind of Wireless networking technologies, and most important advantage is not needing to be routed, not by the limit of wiring condition
System, therefore it is particularly suitable for the needs of mobile office user, WiFi module realizes the remote transmission of data using VT6656 module,
VT6656 module embeds ICP/IP protocol line, reduces the difficulty of design, while substantially increasing Atmega128 and handling other numbers
According to ability, the connection of VT6656 and Atmega128 are very simple, and the two can be connected directly by the USB interface of standard,
VT6656 module is accessed using the 802.11g wireless ethernet of 54Mbps standard, than fast 5 times based on 802.11b agreement, is used
Fast 40 times of ratio USB1.0 interface of USB2.0 interface highest, new antenna technology supports more remote accessing wirelessly, supports all
821.11g the and 802.11b wireless router and access point of standard support 64/128/256 WEP encryption, support WPA/
The superencipherments such as WPA2, WPA-PSK/WPA2-PSK and security mechanism.
Specifically, when carrying out video conference, sound transducer 2 is used to acquire the voice signal of video conference place, and
By the transmission of sound signals of acquisition to signal processing circuit 3, after signal processing circuit 3 handles the voice signal received
It is transmitted to central processing unit 1, central processing unit 1 is adjusted according to the voice signal control microphone adjustment module 7 received
Microphone volume is to preset sound threshold value；Light sensor 4 is used to acquire the light signal of video conference place, and by acquisition
Light signal is transmitted to central processing unit 1, and central processing unit 1 controls light adjustment module according to the light signal received
8 adjust light to default light threshold value；Carbon dioxide sensor 12 is used to acquire the gas concentration lwevel letter of video conference place
Number, and the gas concentration lwevel signal of acquisition is transmitted to central processing unit 1；Image capture module 5 is for acquiring video council
The image information of parliament, and acquired image information is transmitted to image processing module 6,6 pairs of image processing module receptions
To image information carry out image procossing after be transmitted to central processing unit 1, module 10 by wireless communication of central processing unit 1
The image information received is transmitted to display module 11, the image information received is also transmitted to and deposits by central processing unit 1
Storage module 9 is stored.
Video conference place intelligent monitor system further includes a wireless transport module, and central processing unit 1 will receive
Gas concentration lwevel signal is shown by the mobile phone that the wireless transport module is transmitted to staff.
If the time of meeting is too long, the gas concentration lwevel in meeting-place can increase, and staff is according to its reception at this time
The carbon dioxide concentration value in meeting-place arrived, can divulge information in time if the gas concentration lwevel in discovery meeting-place is excessively high etc.
Reason.
During video conference, since every spokesman's speaking volume is different, and the amplifying power of microphone makes to fix
, therefore, video conference place intelligent monitor system provided by the invention acquires video conference place using sound transducer 2
Voice signal carries out central processing unit 1 and is controlled according to the voice signal received microphone adjustment module 7, Mike
Wind adjustment module 7 is adjusted the amplifying power of microphone after the control signal for receiving the sending of central processing unit 1, with
Make the sound stable of video conference place in preset sound threshold value, preset sound threshold value is to be needed and people according to video conference place
For a volume value of setting.
Equally, during video conference, since intensity of illumination variation causes indoor light to change, it will affect image
The picture quality for the video conference place that acquisition module 5 acquires, therefore, video conference place intellectual monitoring provided by the invention system
System acquires the light signal of video conference place using light sensor 4, carries out central processing unit 1 according to the light received
Signal controls light adjustment module 7, and light adjustment module 7 is in the control signal for receiving the sending of central processing unit 1
The lighting apparatus of video conference place is adjusted afterwards, so that the light stabilisation of video conference place is in default light threshold value,
Default light threshold value is the light luminance value for being needed and being manually set according to video conference place.
Wherein, image capture module 5 is specially camera.
Video conference place intelligent monitor system provided by the invention utilizes central processing unit 1, sound transducer 2, letter
Number processing circuit 3, light sensor 4, image capture module 5, image processing module 6, microphone adjustment module 7, light are adjusted
Module 8, memory module 9, wireless communication module 10 and display module 11 automatically adjust the sound and light of video conference phenomenon,
So that the image for the video conference place that image capture module 5 acquires is relatively sharp, and then make the effect of video conference place more
It is good.
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 video conference place intelligent monitor system, which is characterized in that the video conference place intelligent monitor system packet
Include central processing unit (1), sound transducer (2), signal processing circuit (3), light sensor (4), image capture module
(5), image processing module (6), microphone adjustment module (7), light adjustment module (8), memory module (9), radio communication mold
Block (10), display module (11) and carbon dioxide sensor (12)；
Wherein, the output end of the sound transducer (2) is connect with the input terminal of the signal processing circuit (3), described image
The output end of acquisition module (5) is connect with the input terminal of described image processing module (6), the signal processing circuit (3) it is defeated
Outlet, the output end of the light sensor (4), the output end of the carbon dioxide sensor (12) and described image processing
The output end of module (6) is connect with the input terminal of the central processing unit (1), the input of the light adjustment module (8)
End, the input terminal of the input terminal of the memory module (9), the wireless communication module (10) and the microphone adjustment module
(7) input terminal is connect with the output end of the central processing unit (1), the output end of the wireless communication module (10) with
The input terminal of the display module (11) connects；
The sound transducer (2) is set to video conference place, for acquiring the voice signal of video conference place；The light
Line sensor (3) is set to video conference place, for acquiring the light signal of video conference place；The carbon dioxide sensing
Device (12) is set to video conference place, for acquiring the gas concentration lwevel signal of video conference place；Described image acquisition
Module (4) is set to video conference place, for acquiring the image information of video conference place.
2. video conference place intelligent monitor system according to claim 1, which is characterized in that the sound transducer
(2) for acquiring the voice signal of video conference place, the voice signal of acquisition is converted to voltage by the sound transducer (2)
Signal is V0, and voltage signal V0 is transmitted to the signal processing circuit (3), and V1 is to pass through the signal processing circuit (3)
Treated voltage signal, the signal processing circuit (3) include signal amplification unit and signal filter unit, and the sound passes
The output end of sensor (2) is connect with the input terminal of the signal amplification unit, the output end of the signal amplification unit with it is described
The input terminal of signal filter unit connects, the output end of the signal filter unit and the end ADC of the central processing unit (1)
Mouth connection.
3. video conference place intelligent monitor system according to claim 2, which is characterized in that the signal amplification unit
Including integrated transporting discharging A1-A3, resistance R1-R14, diode D1-D2 and capacitor C1-C7；
Wherein, the output end of the sound transducer (2) is connect with one end of resistance R1, the other end and integrated transporting discharging of resistance R1
The inverting input terminal of A1 connects, and the other end of resistance R1 is also connect with one end of capacitor C1, one end ground connection of resistance R2, resistance R2
The other end connect with the non-inverting input terminal of integrated transporting discharging A1, the other end of capacitor C1 is connect with the output end of integrated transporting discharging A1,
One end of resistance R3 is connect with -7.5V DC voltage, and the other end of resistance R3 is connect with the output end of integrated transporting discharging A1, resistance R3
The other end also connect with one end of resistance R4, the other end of resistance R4 is connect with the non-inverting input terminal of integrated transporting discharging A2, resistance
One end of R6 is grounded, and the other end of resistance R6 is connect with the inverting input terminal of integrated transporting discharging A2, the other end and resistance of resistance R6
One end of R5 connects, and the other end of resistance R5 is connect with the cathode of diode D1, and the anode of diode D1 is with integrated transporting discharging A2's
Output end connection, the cathode of diode D1 also connect with one end of capacitor C2, and the cathode of diode D2 is defeated with integrated transporting discharging A2's
Outlet connection, the cathode of diode D1 are also connect with the anode of diode D2, one end ground connection of resistance R8, the other end of resistance R8
It is connect with the other end of capacitor C2, the other end of resistance R8 is also connect with one end of capacitor C3, one end of resistance R7 and diode
Cathode connection, the other end of resistance R7 connect with the other end of capacitor C3, the one end of the other end of resistance R7 also with resistance R9
Connection, the other end of resistance R9 are connect with one end of resistance R10, and one end of resistance R9 is also connect with one end of capacitor C4, capacitor
The other end of C4 is connect with the other end of resistance R10, one end of capacitor C5 ground connection, and the other end of capacitor C5 is another with resistance R9's
End connection, the other end of resistance R10 are also connect with the non-inverting input terminal of integrated transporting discharging A3, one end ground connection of resistance R13, resistance
The other end of R13 is connect with one end of resistance R11, and the other end of resistance R11 is connect with the inverting input terminal of integrated transporting discharging A3, electricity
The other end of resistance R13 is connect with one end of resistance R12, one end connection of the other end capacitor C6 of resistance R12, one end of capacitor C6
It is connect with one end of capacitor C7, one end ground connection of resistance R14, the other end of resistance R14 is connect with one end of capacitor C7, resistance
The other end of R14 is also connect with the other end of capacitor C6, and the other end of capacitor C7 is connect with the output end of integrated transporting discharging A3.
4. video conference place intelligent monitor system according to claim 3, which is characterized in that the signal filter unit
Including resistance R15-R21, capacitor C8-C9 and integrated transporting discharging A4-A6；
Wherein, the output end of the signal amplification unit is connect with one end of resistance R15, the other end and resistance R17 of resistance R15
One end it is in parallel after connect with the non-inverting input terminal of integrated transporting discharging A4, the other end of resistance R17 and the output end of integrated transporting discharging A4
Connection, one end ground connection of resistance R16, the non-inverting input terminal after the other end of resistance R16 is in parallel with resistance R21 with integrated transporting discharging A4
Connection, the other end of resistance R21 connect with the output end of integrated transporting discharging A4, and the other end of resistance R17 is defeated with integrated transporting discharging A4's
Connect after outlet is in parallel with one end of resistance R18, after the other end of resistance R18 is in parallel with one end of capacitor C8 with integrated transporting discharging A5
Inverting input terminal connection, the other end of capacitor C8 connect with after the parallel connection of the output end of integrated transporting discharging A5 with one end of resistance R19,
The non-inverting input terminal of integrated transporting discharging A5 is grounded, with integrated transporting discharging A6's after the other end of resistance R19 is in parallel with one end of capacitor C9
Inverting input terminal connection, the non-inverting input terminal ground connection of integrated transporting discharging A6, the other end of capacitor C9 and the output end of integrated transporting discharging A6
Connection, one end of resistance R20 are connect with the inverting input terminal of integrated transporting discharging A4, and the other end of resistance R20 is with integrated transporting discharging A6's
Output end connection, one end of resistance R21 are connect with the non-inverting input terminal of integrated transporting discharging A4, the other end of resistance R21 and integrated fortune
The output end connection of A5 is put, the output end of integrated transporting discharging A6 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 port ADC.
5. video conference place intelligent monitor system according to claim 1, which is characterized in that described image processing module
It (6) include image smoothing unit, image enhancing unit and image sharpening unit；
Wherein, the output end of described image acquisition module (5) is connect with the input terminal of described image smooth unit, and described image is flat
The output end of sliding unit is connect with the input terminal of described image enhancement unit, the output end of described image enhancement unit and the figure
Input terminal connection as sharpening unit, described image sharpen the output end of unit and the input terminal of the central processing unit (1)
Connection.
6. video conference place intelligent monitor system according to claim 5, which is characterized in that described image is acquired mould
The image definition that block (5) is transmitted to the video conference place of described image processing module (6) is two-dimensional function f (x, y), wherein
X, y is space coordinate, and described image smooth unit carries out image definition enhancing processing to image f (x, y), by image clearly
Degree enhancing treated two-dimensional image function is g (x, y), wherein smooth function is q (x, y),
；
；
Wherein , ﹡ is convolution symbol,For customized adjustable constant, smooth effect is to pass throughCome what is controlled.
7. video conference place intelligent monitor system according to claim 6, which is characterized in that described image enhancement unit
Brightness of image enhancing processing is carried out to image g (x, y), by brightness of image enhancing treated two-dimensional image function be h (x,
Y), wherein
。
8. video conference place intelligent monitor system according to claim 7, which is characterized in that described image sharpens unit
Image sharpening processing is carried out to image h (x, y), is d (x, y) by image sharpening treated two-dimensional image function, wherein
；
By treated, image d (x, y) is transmitted to the central processing unit (1) to described image processing module (6), the center
Processing unit (1) by the image information received by the wireless communication module (10) be transmitted to the display module (11) into
The image information received is transmitted to the memory module (9) and stored by row display, the central processing unit (1).
9. video conference place intelligent monitor system according to claim 1, which is characterized in that the central processing unit
It (1) is 8-bit microprocessor Atmega128, the display module (11) is LCD display unit, the wireless communication module (10)
For WiFi module.
10. video conference place intelligent monitor system according to claim 1, which is characterized in that carrying out video conference
When, the sound transducer (2) is used to acquire the voice signal of video conference place, and by the transmission of sound signals of acquisition to institute
It states signal processing circuit (3), the signal processing circuit (3) is transmitted in described after handling the voice signal received
It entreats processing unit (1), the central processing unit (1) controls the microphone adjustment module according to the voice signal received
(7) microphone volume is adjusted to preset sound threshold value；The light sensor (4) is used to acquire the light letter of video conference place
Number, and the light signal of acquisition is transmitted to the central processing unit (1), central processing unit (1) basis receives
Light signal control the light adjustment module (8) and adjust light to default light threshold value；The carbon dioxide sensor
(12) for acquiring the gas concentration lwevel signal of video conference place, and the gas concentration lwevel signal of acquisition is transmitted to institute
It states central processing unit (1), described image acquisition module (5) is used to acquire the image information of video conference place, and will acquisition
To image information be transmitted to described image processing module (6), described image processing module (6) to the image information received into
It is transmitted to after row image procossing the central processing unit (1), the central processing unit (1) passes through the wireless communication module
(10) image information received is transmitted to the display module (11), the central processing unit (1) will also receive
Image information is transmitted to memory module (9) and is stored；Video conference place intelligent monitor system further includes a wireless transmission mould
The gas concentration lwevel signal received is transmitted to work by the wireless transport module by block, the central processing unit (1)
The mobile phone for making personnel is shown.
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Application publication date: 20190201 |