CN109932973A - A kind of showpiece microenvironment monitoring system - Google Patents
A kind of showpiece microenvironment monitoring system Download PDFInfo
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Abstract
The invention discloses a kind of showpiece microenvironment monitoring systems, including frequency collection circuit, separation calibration circuit and frequency-selecting output circuit, the analog signal of signal transmission passage input terminal in the frequency collection circuit acquisition showpiece microenvironment monitoring system controlling terminal, the separation calibration circuit uses variable resistance RW1, variable resistance RW2 and capacitor C3, frequency collection circuit output signal is divided into two paths of signals by capacitor C4, the frequency-selecting output circuit is exported with the signal that resistance R19- resistance R21 and capacitor C13- capacitor C15 composition frequency selection circuit filters out single-frequency, can in real-time detection showpiece microenvironment monitoring system controlling terminal signal transmission passage signal(l)ing condition, signal frequency is converted to the thermal compensation signal of the analog signal of signal transmission passage input terminal in showpiece microenvironment monitoring system simultaneously.
Description
Technical field
The present invention relates to field of circuit technology, more particularly to a kind of showpiece microenvironment monitoring system.
Background technique
Network video monitor and control system is all round computer IP video technique, video and Audio data compression and decompression
The system that technology, Internet application technology combine, long-distance video control system can release monitoring information monitoring center,
It can be reached on the computer of desktop by computer network, to melt with information management system and the office automation system
It is combined, is preferably management service, raise the management level and efficiency, showpiece microenvironment monitoring system are as technology core
Heart design, improves the management level and efficiency of exhibition room environmental monitoring, however showpiece microenvironment monitoring system itself is sometimes
It will appear failure, especially signal frequency hopping, distortion, lead to signal disorder, showpiece microenvironment monitoring system data-signal occur
Error.
Summary of the invention
For above situation, for the defect for overcoming the prior art, purpose of the present invention is to provide a kind of showpiece microenvironments
Monitoring system, can in real-time detection showpiece microenvironment monitoring system controlling terminal signal transmission passage signal(l)ing condition, simultaneously
Signal frequency is converted to the thermal compensation signal of the analog signal of signal transmission passage input terminal in showpiece microenvironment monitoring system.
Its technical solution solved is: a kind of showpiece microenvironment monitoring system, including frequency collection circuit, separation calibration electricity
Road and frequency-selecting output circuit, the frequency collection circuit acquire signal transmission passage in showpiece microenvironment monitoring system controlling terminal
The analog signal of input terminal, the signal transmission passage are that showpiece microenvironment monitoring system controlling terminal receives the logical of analog signal
Road, the separation calibration circuit are defeated by frequency collection circuit with variable resistance RW1, variable resistance RW2 and capacitor C3, capacitor C4
Signal is divided into two paths of signals out, all the way with diode D3, diode D4 and capacitor C5, capacitor C6 and variable resistance RW3 group
At rectification circuit to signal rectification, while with triode Q1 and capacitor C7- capacitor C9 composition FM circuit to signal frequency modulation, together
Luck inductance L2 and capacitor C10, capacitor C11 are inputted in transport and placing device AR2 non-inverting input terminal after forming filter circuit filtering, two tunnels
Signal potential is limited with diode D5, diode D6 composition switching circuit, while filtering out abnormal low level with triode Q1
Signal, triode Q3 feed back abnormal high level signal to triode Q1 emitter, adjust signal all the way and export current potential, last two-way
Signal is inputted together in transport and placing device AR2 non-inverting input terminal, and the frequency-selecting output circuit uses resistance R19- resistance R21 and capacitor
C13- capacitor C15 composition frequency selection circuit filters out the signal output of single-frequency, that is to say as showpiece microenvironment monitoring system control
The thermal compensation signal of the analog signal of signal transmission passage input terminal in terminal processed；
Separation calibration circuit includes variable resistance RW1, and the one of the 2 connecting resistance R2 of contact of variable resistance RW1, capacitor C4
End, the contact 1 of variable resistance RW1 connects the other end of capacitor C4 and one end of capacitor C3, resistance R4, the contact 3 of variable resistance RW1
Meet one end of the other end of capacitor C3 and the anode of diode D3, the cathode of diode D4 and capacitor C5, capacitor C6, diode D3
Cathode connect the collector of the other end of capacitor C5 and the contact 2 of variable resistance RW3, one end of capacitor C9 and triode Q1,
The contact 1 of variable resistance RW3 connects the other end of capacitor C6 and the anode of diode D4, and the contact 3 of variable resistance RW3 connects triode
The base stage of Q1 and one end of capacitor C7, emitter connecting resistance R5, one end of resistance R7 and the transmitting of triode Q3 of triode Q1
Pole, the other end of another termination capacitor C7 of resistance R5 and one end of capacitor C8, the other end ground connection of resistance R7, capacitor C8, electricity
Hold one end of another termination inductance L2 of C9, resistance R6, capacitor C10, the one of another terminating resistor R8 of inductance L2, capacitor C11
End, resistance R6, capacitor C10, capacitor C11 the other end ground connection, the non-inverting input terminal of another termination transport and placing device AR2 of resistance R8 and
The cathode of diode D7, one end of another terminating resistor R3 of resistance R2, the contact of another termination variable resistance RW2 of resistance R3
The other end of the 1 connecting resistance R4 of contact of 2, variable resistance RW2, the contact 3 of variable resistance RW2 connects the cathode of diode D5, two poles
The anode of pipe D6, the anode of diode D5 connect the cathode of diode D6 and the non-inverting input terminal of transport and placing device AR1, transport and placing device AR1's
One end of anti-phase input terminating resistor R9, resistance R10, the other end ground connection of resistance R9, the output terminating resistor of transport and placing device AR1
One end of the other end of R10 and resistance R11, the emitter of the anode of diode D7 and triode Q2, triode Q3 base stage,
The base stage of another termination triode Q2 of resistance R11 and one end of resistance R12, the other end ground connection of resistance R12, triode Q2's
Grounded collector, one end of the collector connecting resistance R13 of triode Q3, another termination power+5V, transport and placing device AR2 of resistance R13
Anti-phase input terminating resistor R14, resistance R15 one end, resistance R14 the other end ground connection, another termination amplifier of resistance R15
The output end of device AR2.
By above technical scheme, the invention has the benefit that
1. frequency collection circuit output signal is divided with variable resistance RW1, variable resistance RW2 and capacitor C3, capacitor C4
For two paths of signals, this two paths of signals is the signal of same frequency, and the resistance value ratio by changing variable resistance RW1, variable resistance RW2 can
To adjust the current potential accounting of two paths of signals, capacitor C3, capacitor C4 filter out the clutter in signal, use diode D3, two poles all the way
Pipe D4 and capacitor C5, capacitor C6 and variable resistance RW3 composition rectification circuit utilize diode D3, diode to signal rectification
The one-way conduction property of D4 realizes the rectification to signal, and capacitor C5, capacitor C6 are filter capacitor, by changing variable resistance RW3
The adjustable rectification circuit output signal amplification of resistance value, while FM circuit is formed with triode Q1 and capacitor C7- capacitor C9
To signal frequency modulation, capacitor C7, capacitor C8 are shunt capacitance, and the noise of filtering high frequency signal, capacitor C9 is decoupling capacitor, are filtered out low
Frequency signal noise realizes the frequency modulation to signal；2. with diode D5, diode D6 composition switching circuit limitation signal electricity
Position, while with transport and placing device AR1 with phase amplified signal, the conduction loss of thermal compensation signal, and exception is filtered out with triode Q1
Low level signal, triode Q3 feed back abnormal high level signal to triode Q1 emitter, and triode Q1, triode Q2 adjust fortune
Device AR1 output signal amplification is put, guarantees the current potential size of thermal compensation signal, last two paths of signals inputs the same phase of transport and placing device AR2 together
In input terminal, transport and placing device AR2 is inputted in frequency-selecting output circuit with after phase amplified signal, realizes the sieve to signal potential, frequency
Choosing calibration, ensure that the reliability of thermal compensation signal.
Detailed description of the invention
Fig. 1 is system module figure of the invention.
Fig. 2 is circuit diagram of the invention.
Specific embodiment
For the present invention aforementioned and other technology contents, feature and effect, in following cooperation with reference to figures 1 through attached drawing 2
To in the detailed description of embodiment, can clearly present.The structure content being previously mentioned in following embodiment is with specification
Attached drawing is reference.
Each exemplary embodiment of the invention is described below with reference to accompanying drawings.
Embodiment one, a kind of showpiece microenvironment monitoring system, including frequency collection circuit, separation calibration circuit and frequency-selecting are defeated
Circuit out, the frequency collection circuit acquire the mould of signal transmission passage input terminal in showpiece microenvironment monitoring system controlling terminal
Quasi- signal, the signal transmission passage are the channel that showpiece microenvironment monitoring system controlling terminal receives analog signal, the separation
Frequency collection circuit output signal is divided by calibration circuit with variable resistance RW1, variable resistance RW2 and capacitor C3, capacitor C4
Two paths of signals forms rectification circuit with diode D3, diode D4 and capacitor C5, capacitor C6 and variable resistance RW3 all the way
To signal rectification, while with triode Q1 and capacitor C7- capacitor C9 composition FM circuit to signal frequency modulation, while using inductance
L2 and capacitor C10, capacitor C11 are inputted in transport and placing device AR2 non-inverting input terminal after forming filter circuit filtering, two road transport diodes
D5, diode D6 form switching circuit and limit signal potential, while filtering out abnormal low level signal, triode with triode Q1
Q3 feeds back abnormal high level signal to triode Q1 emitter, adjusts signal all the way and exports current potential, last two paths of signals is defeated together
Enter in transport and placing device AR2 non-inverting input terminal, the frequency-selecting output circuit uses resistance R19- resistance R21 and capacitor C13- capacitor C15
Composition frequency selection circuit filters out the signal output of single-frequency, that is to say as signal in showpiece microenvironment monitoring system controlling terminal
The thermal compensation signal of the analog signal of transmission channel input terminal；
Separation calibration circuit is with variable resistance RW1, variable resistance RW2 and capacitor C3, capacitor C4 by frequency collection
Circuit output signal is divided into two paths of signals, this two paths of signals be same frequency signal, by change variable resistance RW1, can power transformation
The current potential accounting of the adjustable two paths of signals of resistance value ratio of RW2 is hindered, capacitor C3, capacitor C4 filter out the clutter in signal, a road transport
With diode D3, diode D4 and capacitor C5, capacitor C6 and variable resistance RW3 composition rectification circuit to signal rectification, utilize
Rectification of the one-way conduction property realization of diode D3, diode D4 to signal, capacitor C5, capacitor C6 are filter capacitor, are passed through
Change the adjustable rectification circuit output signal amplification of variable resistance RW3 resistance value, while using triode Q1 and capacitor C7- capacitor
C9 forms FM circuit to signal frequency modulation, and capacitor C7, capacitor C8 are shunt capacitance, the noise of filtering high frequency signal, and capacitor C9 is
Decoupling capacitor filters out low frequency signal noise, realizes the frequency modulation to signal, finally uses inductance L2 and capacitor C10, capacitor C11
It is inputted in transport and placing device AR2 non-inverting input terminal after forming filter circuit filtering, two road transports diode D5, diode D6 composition switch
Circuit limits signal potential, while with transport and placing device AR1 with phase amplified signal, the conduction loss of thermal compensation signal, and uses three
Pole pipe Q1 filters out abnormal low level signal, and triode Q3 feeds back abnormal high level signal to triode Q1 emitter, triode Q1,
Triode Q2 adjusts transport and placing device AR1 output signal amplification, guarantees the current potential size of thermal compensation signal, last two paths of signals inputs together
In transport and placing device AR2 non-inverting input terminal, transport and placing device AR2 is inputted in frequency-selecting output circuit with after phase amplified signal, is realized to signal
The screening calibration of current potential, frequency, ensure that the reliability of thermal compensation signal；
Circuit specific structure is calibrated in the separation, and one end of the 2 connecting resistance R2 of contact of variable resistance RW1, capacitor C4 can be changed
The contact 1 of resistance RW1 connects the other end of capacitor C4 and one end of capacitor C3, resistance R4, and the contact 3 of variable resistance RW1 connects capacitor
The other end of C3 and anode, the cathode of diode D4 and one end of capacitor C5, capacitor C6 of diode D3, the cathode of diode D3
The collector for connecing the other end of capacitor C5 and the contact 2 of variable resistance RW3, one end of capacitor C9 and triode Q1, can power transformation
The contact 1 of resistance RW3 connects the other end of capacitor C6 and the anode of diode D4, and the contact 3 of variable resistance RW3 connects the base of triode Q1
One end of pole and capacitor C7, emitter connecting resistance R5, one end of resistance R7 and the emitter of triode Q3 of triode Q1, resistance
The other end of another termination capacitor C7 of R5 and one end of capacitor C8, the other end ground connection of resistance R7, capacitor C8, capacitor C9's is another
One end of one termination inductance L2, resistance R6, capacitor C10, one end of another terminating resistor R8 of inductance L2, capacitor C11, resistance
The other end ground connection of R6, capacitor C10, capacitor C11, the non-inverting input terminal and diode of another termination transport and placing device AR2 of resistance R8
The cathode of D7, one end of another terminating resistor R3 of resistance R2, the contact 2 of another termination variable resistance RW2 of resistance R3 can be changed
The other end of the 1 connecting resistance R4 of contact of resistance RW2, the contact 3 of variable resistance RW2 connect the cathode of diode D5, diode D6
Anode, the anode of diode D5 connect the cathode of diode D6 and the non-inverting input terminal of transport and placing device AR1, and the reverse phase of transport and placing device AR1 is defeated
Enter one end of terminating resistor R9, resistance R10, the other end ground connection of resistance R9, the output terminating resistor R10's of transport and placing device AR1 is another
The base stage of one end and one end of resistance R11, the emitter of the anode of diode D7 and triode Q2, triode Q3, resistance R11
Another termination triode Q2 base stage and resistance R12 one end, resistance R12 the other end ground connection, the collector of triode Q2
Ground connection, one end of the collector connecting resistance R13 of triode Q3, another termination power+5V of resistance R13, the reverse phase of transport and placing device AR2
Input one end of terminating resistor R14, resistance R15, the other end ground connection of resistance R14, another termination transport and placing device AR2 of resistance R15
Output end.
Embodiment two, on the basis of example 1, the frequency-selecting output circuit use resistance R19- resistance R21 and capacitor
C13- capacitor C15 composition frequency selection circuit filters out the signal output of single-frequency, and the signal of single-frequency is relatively stable, can also filter
Except abnormal signal, that is to say as the analog signal of signal transmission passage input terminal in showpiece microenvironment monitoring system controlling terminal
Thermal compensation signal, the non-inverting input terminal of a termination transport and placing device AR2 of capacitor C13 and one end of resistance R16, the other end of capacitor C13
One end of connecting resistance R17, capacitor C14, one end of another terminating resistor R18 of capacitor C14 and signal output port, resistance R16
Another termination capacitor C15 one end and resistance R18 the other end, resistance R17, capacitor C15 the other end ground connection.
Embodiment three, on the basis of example 2, the frequency collection circuit select the signal frequency of model SJ-ADC
Rate collector J1 acquires the analog signal of signal transmission passage input terminal in showpiece microenvironment monitoring system controlling terminal, voltage-stabiliser tube
D1 pressure stabilizing, one end of the power supply termination capacitor C1 of signal frequency collector J1 and power supply+5V, the ground connection of signal frequency collector J1
One end of end ground connection, the other end of the output termination capacitor C1 of signal frequency collector J1 and resistance R1, voltage-stabiliser tube D1 cathode,
The plus earth of voltage-stabiliser tube D1, one end of another termination capacitor C2 of resistance R1 and the anode of diode D2, capacitor C2's is another
End ground connection, the other end of the cathode connecting resistance R2 of diode D2.
The present invention is when specifically used, a kind of showpiece microenvironment monitoring system, including frequency collection circuit, separation calibration electricity
Road and frequency-selecting output circuit, the frequency collection circuit acquire signal transmission passage in showpiece microenvironment monitoring system controlling terminal
The analog signal of input terminal, the signal transmission passage are that showpiece microenvironment monitoring system controlling terminal receives the logical of analog signal
Road, the separation calibration circuit are defeated by frequency collection circuit with variable resistance RW1, variable resistance RW2 and capacitor C3, capacitor C4
Signal is divided into two paths of signals out, this two paths of signals is the signal of same frequency, by changing variable resistance RW1, variable resistance RW2
The current potential accounting of the adjustable two paths of signals of resistance value ratio, capacitor C3, capacitor C4 filter out the clutter in signal, use diode all the way
D3, diode D4 and capacitor C5, capacitor C6 and variable resistance RW3 composition rectification circuit to signal rectification, using diode D3,
The one-way conduction property of diode D4 realizes the rectification to signal, and capacitor C5, capacitor C6 are filter capacitor, can power transformation by changing
The adjustable rectification circuit output signal amplification of RW3 resistance value is hindered, while forming frequency modulation with triode Q1 and capacitor C7- capacitor C9
Circuit is to signal frequency modulation, and capacitor C7, capacitor C8 are shunt capacitance, and the noise of filtering high frequency signal, capacitor C9 is decoupling capacitor, filter
Except low frequency signal noise, the frequency modulation to signal is realized, finally forms filter circuit with inductance L2 and capacitor C10, capacitor C11
It is inputted in transport and placing device AR2 non-inverting input terminal after filtering, two road transports diode D5, diode D6 form switching circuit and limit signal
Current potential, while with transport and placing device AR1 with phase amplified signal, the conduction loss of thermal compensation signal, and filter out with triode Q1 different
Normal low level signal, triode Q3 feed back abnormal high level signal to triode Q1 emitter, and triode Q1, triode Q2 are adjusted
Transport and placing device AR1 output signal amplification, guarantees the current potential size of thermal compensation signal, it is same that last two paths of signals inputs transport and placing device AR2 together
In phase input terminal, transport and placing device AR2 is inputted in frequency-selecting output circuit with after phase amplified signal, is realized to signal potential, frequency
Screening calibration, ensure that the reliability of thermal compensation signal, and the frequency-selecting output circuit uses resistance R19- resistance R21 and capacitor C13-
Capacitor C15 composition frequency selection circuit filters out the signal output of single-frequency, that is to say and controls eventually for showpiece microenvironment monitoring system
The thermal compensation signal of the analog signal of signal transmission passage input terminal in end.
The above is that further detailed description of the invention, and it cannot be said that the present invention in conjunction with specific embodiment
Specific implementation is limited only to this；Belonging to the present invention and for those skilled in the technology concerned, it is being based on skill of the present invention
Under the premise of art scheme thinking, it is made expansion and operating method, data replacement, should all fall in the scope of the present invention it
It is interior.
Claims (3)
1. a kind of showpiece microenvironment monitoring system, including frequency collection circuit, separation calibration circuit and frequency-selecting output circuit, special
Sign is: the mould of signal transmission passage input terminal in the frequency collection circuit acquisition showpiece microenvironment monitoring system controlling terminal
Quasi- signal, the signal transmission passage are the channel that showpiece microenvironment monitoring system controlling terminal receives analog signal, the separation
Frequency collection circuit output signal is divided by calibration circuit with variable resistance RW1, variable resistance RW2 and capacitor C3, capacitor C4
Two paths of signals forms rectification circuit with diode D3, diode D4 and capacitor C5, capacitor C6 and variable resistance RW3 all the way
To signal rectification, while with triode Q1 and capacitor C7- capacitor C9 composition FM circuit to signal frequency modulation, while using inductance
L2 and capacitor C10, capacitor C11 are inputted in transport and placing device AR2 non-inverting input terminal after forming filter circuit filtering, two road transport diodes
D5, diode D6 form switching circuit and limit signal potential, while filtering out abnormal low level signal, triode with triode Q1
Q3 feeds back abnormal high level signal to triode Q1 emitter, adjusts signal all the way and exports current potential, last two paths of signals is defeated together
Enter in transport and placing device AR2 non-inverting input terminal, the frequency-selecting output circuit uses resistance R19- resistance R21 and capacitor C13- capacitor C15
Composition frequency selection circuit filters out the signal output of single-frequency, that is to say as signal in showpiece microenvironment monitoring system controlling terminal
The thermal compensation signal of the analog signal of transmission channel input terminal；
Separation calibration circuit includes variable resistance RW1, one end of the 2 connecting resistance R2 of contact of variable resistance RW1, capacitor C4,
The contact 1 of variable resistance RW1 connects the other end of capacitor C4 and one end of capacitor C3, resistance R4, and the contact 3 of variable resistance RW1 connects
The other end of capacitor C3 and anode, the cathode of diode D4 and one end of capacitor C5, capacitor C6 of diode D3, diode D3's
Cathode connects the collector of the other end of capacitor C5 and the contact 2 of variable resistance RW3, one end of capacitor C9 and triode Q1, can
The contact 1 of power transformation resistance RW3 connects the other end of capacitor C6 and the anode of diode D4, and the contact 3 of variable resistance RW3 meets triode Q1
Base stage and capacitor C7 one end, emitter connecting resistance R5, one end of resistance R7 and the emitter of triode Q3 of triode Q1,
The other end of another termination capacitor C7 of resistance R5 and one end of capacitor C8, the other end ground connection of resistance R7, capacitor C8, capacitor C9
Another termination inductance L2, resistance R6, capacitor C10 one end, one end of another terminating resistor R8 of inductance L2, capacitor C11, electricity
Hinder the other end ground connection of R6, capacitor C10, capacitor C11, the non-inverting input terminal of another termination transport and placing device AR2 of resistance R8 and two poles
The cathode of pipe D7, one end of another terminating resistor R3 of resistance R2, the contact 2 of another termination variable resistance RW2 of resistance R3 can
Power transformation hinders the other end of the 1 connecting resistance R4 of contact of RW2, and the contact 3 of variable resistance RW2 connects the cathode of diode D5, diode D6
Anode, the anode of diode D5 connects the cathode of diode D6 and the non-inverting input terminal of transport and placing device AR1, the reverse phase of transport and placing device AR1
One end of terminating resistor R9, resistance R10 are inputted, the other end ground connection of resistance R9, transport and placing device AR1's exports terminating resistor R10's
One end of the other end and resistance R11, the emitter of the anode of diode D7 and triode Q2, triode Q3 base stage, resistance
The base stage of another termination triode Q2 of R11 and one end of resistance R12, the other end ground connection of resistance R12, the current collection of triode Q2
Pole ground connection, one end of the collector connecting resistance R13 of triode Q3, another termination power+5V of resistance R13, transport and placing device AR2's is anti-
Mutually one end of input terminating resistor R14, resistance R15, the other end ground connection of resistance R14, another termination transport and placing device of resistance R15
The output end of AR2.
2. a kind of showpiece microenvironment monitoring system according to claim 1, it is characterised in that: the frequency-selecting output circuit packet
Include capacitor C13, the non-inverting input terminal of a termination transport and placing device AR2 of capacitor C13 and one end of resistance R16, the other end of capacitor C13
One end of connecting resistance R17, capacitor C14, one end of another terminating resistor R18 of capacitor C14 and signal output port, resistance R16
Another termination capacitor C15 one end and resistance R18 the other end, resistance R17, capacitor C15 the other end ground connection.
3. a kind of showpiece microenvironment monitoring system according to claim 2, it is characterised in that: the frequency collection circuit packet
Include the signal frequency collector J1 of model SJ-ADC, one end of the power supply termination capacitor C1 of signal frequency collector J1 and power supply
The ground terminal of+5V, signal frequency collector J1 are grounded, the other end and electricity of the output termination capacitor C1 of signal frequency collector J1
Hinder one end of R1, the cathode of voltage-stabiliser tube D1, the plus earth of voltage-stabiliser tube D1, one end and two of another termination capacitor C2 of resistance R1
The anode of pole pipe D2, the other end ground connection of capacitor C2, the other end of the cathode connecting resistance R2 of diode D2.
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| CN111323154A (en) * | 2020-04-21 | 2020-06-23 | 江苏弘扩信息科技有限公司 | Construction stress detection system based on block chain bridge |
| CN111487907A (en) * | 2020-04-24 | 2020-08-04 | 刘莹雪 | Building construction monitored control system based on 5G communication |
| CN111487907B (en) * | 2020-04-24 | 2020-12-22 | 南京南大工程检测有限公司 | Building construction monitored control system based on 5G communication |
| CN111653077A (en) * | 2020-05-28 | 2020-09-11 | 苏龙嘎 | Building construction information monitoring system based on Internet of things |
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| CN109932973B (en) | 2020-12-08 |
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