CN110085019A - Wisdom chemical industry ground construction environment signal acquisition emitter - Google Patents

Wisdom chemical industry ground construction environment signal acquisition emitter Download PDF

Info

Publication number
CN110085019A
CN110085019A CN201910457766.5A CN201910457766A CN110085019A CN 110085019 A CN110085019 A CN 110085019A CN 201910457766 A CN201910457766 A CN 201910457766A CN 110085019 A CN110085019 A CN 110085019A
Authority
CN
China
Prior art keywords
resistance
triode
signal
circuit
capacitor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201910457766.5A
Other languages
Chinese (zh)
Other versions
CN110085019B (en
Inventor
吴勇军
屈根伟
陈树观
李舒侗
姜峰
王占坤
丁喜娟
肖远航
赵志远
焦钰剑
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jin Ju Construction And Development Ltd By Share Ltd
Original Assignee
Jin Ju Construction And Development Ltd By Share Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jin Ju Construction And Development Ltd By Share Ltd filed Critical Jin Ju Construction And Development Ltd By Share Ltd
Priority to CN201910457766.5A priority Critical patent/CN110085019B/en
Publication of CN110085019A publication Critical patent/CN110085019A/en
Application granted granted Critical
Publication of CN110085019B publication Critical patent/CN110085019B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • GPHYSICS
    • G08SIGNALLING
    • G08CTRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C19/00Electric signal transmission systems

Abstract

The invention discloses wisdom chemical industry construction environment signal acquisition emitter, the signal receiving circuit is powered using constant pressure source, signal is detected through differential balance enhanced processing, and guarantee signal between 0-5V using the abnormal high/low current potential of triode Q2/Q3 feedback, enter controllable FM circuit later, when signal is normal, in switch K1 closure through oscillating circuit homophony frequency, transmitter is output to after mixing amplifying circuit amplification, when more than normal range (NR), switch K1 is shorted, trigger triode Q6 is the oscillating circuit frequency modulation of core immediately, signal enters with signal after homophony frequency after frequency modulation is mixed amplifying circuit mixing, it is output on transmitter after amplification, the frequency modulation feed circuit acquires the output signal of controllable FM circuit, the frequency departure amount with reference frequency signal is calculated through circuit of frequency difference and is switched to for 0- 5V voltage, signal further controls frequency modulation after coupling after keeping with sampling.The problem of anti-interference is poor in effective solution signal transmitting, abnormal signal transmits not in time.

Description

Wisdom chemical industry ground construction environment signal acquisition emitter
Technical field
The present invention relates to site construction technical field of environmental detection, and more particularly to wisdom chemical industry construction environment signal is adopted Collect emitter.
Background technique
Site construction is since house breaking, material loss and construction machinery etc. cause noise and fugitive dust and its serious, Become one of the main reason for influencing urban air-quality, or even influences the normal life of surrounding resident, site construction environment Application of Monitoring System and give birth to, specifically environmental parameter is detected by various kinds of sensors in data acquisition module, by logical It interrogates module transfer and realizes monitoring to information monitoring platform, and controllable execution module carries out caution device alarm and abatement equipment such as Dust falling device spray.
Since site construction environmental field is extensively severe, and the parameter detected is more, and the signal of sensor detection uses wired biography It is defeated to there is decaying and be difficult to be routed, and wireless sensor is used, due to the fragility and vulnerability to jamming of wireless sensor network, It can make crosstalk between signal, and to realize overall monitor, need to be carried out using different classes of, different location sensors towards ambient parameter Detection, due to containing much information, when abnormal parameters, need to be transferred to monitor supervision platform in time, analysis in time, processing, therefore improve letter Number anti-interference, timeliness be one of important technological problems for site construction environment measuring.
So the present invention provides the new scheme of one kind to solve the problems, such as this.
Summary of the invention
For above situation, for the defect for overcoming the prior art, purpose of the present invention is to provide wisdom site constructions Environmental signal acquires emitter, and anti-interference is poor in effective solution signal transmitting, abnormal signal transmits asking not in time Topic.
Its technical solution solved is, including data acquisition module, communication module, monitor supervision platform, execution module, the number Site construction environmental parameter is detected by sensor according to acquisition module, it is real to be transferred to information monitoring platform through communication module It now monitors, and controllable execution module carries out caution device alarm and abatement equipment is administered, which is characterized in that sensor detection Site construction environmental parameter signals pass through after signal receiving circuit, controllable FM circuit, frequency modulation feed circuit controllable period frequency modulation Transmitter is transmitted directly to monitor supervision platform, so as to improve the anti-interference of signal, information monitoring platform receive exception information and Shi Xing;
It for the constant pressure source of core is that sensors X 1 provides electricity that the signal receiving circuit, which uses operational amplifier AR4, triode Q1, Source, the differential amplifier circuit output that the site construction environmental signal of sensor detection is formed through operational amplifier AR1, AR2, AR3, Signal to guarantee differential amplifier circuit output feeds back abnormal high/low current potential to operation using triode Q2/Q3 between 0-5V The input terminal of amplifier AR3, the controllable FM circuit receive signal receiving circuit output signal, through operational amplifier AR5, simultaneously The sampling holder in the controllable sampling period of switch K1 and thyristor VTL1 capacitor the C2 composition of connection, which samples, to be kept, wherein thyristor VTL1 is connected when window comparator circuit judges the signal of differential amplifier circuit output more than normal value, and trigger triode Q6 is The oscillating circuit frequency modulation of core, after frequency modulation signal and triode Q4 be core oscillating circuit homophony frequency after signal through triode Q7 For the mixing of mixing amplifying circuit, the amplification of core, the high-pass filtering circuit string most formed afterwards through electrolytic capacitor E4, E5, inductance L4 The low-pass filter circuit that connection inductance L5, L6, variable capacitance CP3 are formed filters out the interference of other frequency signals other than FM signal After be output to transmitter, also trigger corresponding triode Q13/Q12 conducting, the connection of 2/ reference frequency signal 1 of reference frequency signal Make reference frequency signal to frequency modulation feed circuit, the frequency modulation feed circuit acquires the output signal of controllable FM circuit, through three Pole pipe Q8-Q11 is the circuit of frequency difference of core, calculates the frequency departure amount with reference frequency signal and switchs to for 0-5V electricity Pressure, signal further controls frequency modulation after coupling after keeping with the sampling of the sampling holder in controllable sampling period.
Due to the use of above technical scheme, the present invention has the following advantages that compared with prior art;
1, concussion when signal receiving circuit output signal is normal, when switch K1 timing reaches closure through triode Q4 for core After circuit homophony frequency, it is output to transmitter after amplifying into the mixing amplifying circuit that triode Q7 is core, is more than normal range (NR) When, switch K1 is shorted, immediately by trigger triode Q6, capacitor C5, capacitor C6, electrolytic capacitor E3, resistance R24, resistance R25 group At oscillating circuit frequency modulation, signal is after triode Q4 is the oscillating circuit homophony frequency of core after signal and sampling are kept after frequency modulation Signal is mixed into the mixing amplifying circuit that triode Q7 is core, is output on transmitter after amplification, so as to improve signal Anti-interference, information monitoring platform receive the timeliness of exception information;
2, the output signal of controllable FM circuit is acquired by diode D1 and reference frequency signal is distinguished coupled capacitor and entered Triode Q8-Q11 is the circuit of frequency difference of core, calculates the frequency departure amount with reference frequency signal and switchs to for 0-5V electricity Pressure, signal further controls frequency modulation in setting transmitting pin after keeping with the sampling of the sampling holder in controllable sampling period after coupling Rate, to improve anti-interference, stability.
Detailed description of the invention
Fig. 1 is circuit theory total figure of the invention.
Fig. 2 is signal receiving circuit schematic diagram of the invention.
Fig. 3 is controllable FM circuit schematic diagram of the invention.
Fig. 4 is frequency modulation feed circuit schematic 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 4 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, wisdom chemical industry construction environment signal acquisition emitter, the data acquisition module pass through sensing Device detects site construction environmental parameter, is transferred to information monitoring platform through communication module and realizes monitoring, and can control and hold Row module carries out caution device alarm and abatement equipment is administered, and the site construction environmental parameter signals of sensor detection connect through signal It is transmitted directly to monitor supervision platform through transmitter after receipts circuit, controllable FM circuit, frequency modulation feed circuit controllable period frequency modulation, with this Improve the anti-interference of signal, the timeliness of information monitoring platform reception exception information;The signal receiving circuit uses operation Amplifier AR4, the constant pressure source that triode Q1 is core are that sensors X 1 provides power supply, the site construction environment letter of sensor detection Number through operational amplifier AR1, AR2, AR3 composition differential amplifier circuit export, for guarantee differential amplifier circuit output signal Between 0-5V, using the input terminal of the abnormal high/low current potential of triode Q2/Q3 feedback to operational amplifier AR3, it is described can control Frequency circuit receives signal receiving circuit output signal, through operational amplifier AR5, switch K1 and thyristor VTL1, capacitor in parallel The sampling holder in the controllable sampling period of C2 composition, which samples, to be kept, and the retention time is determined by the charge and discharge of capacitor C2, switch K1 For time switch, the period of sampling is controlled, wherein thyristor VTL1 judges differential amplifier circuit output in window comparator circuit Signal is connected when being more than normal value, specifically, signal enters operational amplifier AR6, AR7, resistance R10- resistance after sampling is kept R12 forms window comparator circuit compared with the normal range value that resistance R10- resistance R12 bleeder circuit provides, and is more than normal range (NR) When, high level is exported, otherwise exports low level, when high level, triode Q5 conducting, bilateral diode VD1 conducting, thyristor VTL1 conducting, thyristor VTL1 switch K1 switched on are shorted, and signal receiving circuit output signal is arrived without waiting for the sampling period Come namely switch K1 timing reaches closure Shi Zaixiang rear class circuit transmission, while trigger triode Q6, capacitor C5, capacitor C6, electricity The oscillating circuit frequency modulation of capacitor E3, resistance R24, resistance R25 composition is solved, signal is through triode after signal and sampling are kept after frequency modulation Q4 is signal after the oscillating circuit homophony frequency of core, into the mixing amplifying circuit mixing that triode Q7 is core, is amplified, finally The low pass filtered of high-pass filtering circuit series inductance L5, L6, variable capacitance CP3 composition through electrolytic capacitor E4, E5, inductance L4 composition Wave circuit is output to transmitter after filtering out the interference of other frequency signals other than FM signal, otherwise triode Q5 cut-off, double Be not turned on to diode VD1, thyristor VTL1 is not turned on, triode Q6, capacitor C5, capacitor C6, electrolytic capacitor E3, resistance R24, The oscillating circuit of resistance R25 composition does not have starting signal, does not work, and signal receiving circuit output signal is reached in switch K1 timing When closure after triode Q4 is the oscillating circuit homophony frequency of core, put into the mixing amplifying circuit that triode Q7 is core Greatly, high-pass filtering circuit series inductance L5, L6, the variable capacitance CP3 most afterwards through electrolytic capacitor E4, E5, inductance L4 composition are formed Low-pass filter circuit filter out the interference of other frequency signals other than FM signal after be output to transmitter namely signal is normal When, signal is applied directly to transmitter transmission when signal is more than normal range (NR) after homophony frequency when being arrived using the sampling period, adopts With mixed signal is added to transmitter transmission immediately, received so as to improve the anti-interference of signal, information monitoring platform abnormal The timeliness of information, the high/low level of window comparator circuit output also triggers corresponding triode Q13/Q12 conducting, with reference to frequency 2/ reference frequency signal 1 of rate signal is connected to frequency modulation feed circuit and makees reference frequency signal, and the frequency modulation feed circuit acquisition can The output signal of control frequency circuit is the circuit of frequency difference of core through triode Q8-Q11, calculates and reference frequency signal Frequency departure amount simultaneously switchs to for 0-5V voltage, and signal couples laggard one after keeping with the sampling of the sampling holder in controllable sampling period Step control frequency modulation.
Embodiment two, on the basis of example 1, the controllable FM circuit receive signal receiving circuit output signal, The sampling holder in the controllable sampling period through operational amplifier AR5, switch K1 in parallel and thyristor VTL1, capacitor C2 composition Sampling is kept, and the retention time is determined by the charge and discharge of capacitor C2, and switch K1 is time switch, controls the period of sampling, wherein brilliant Brake tube VTL1 is connected when window comparator circuit judges the signal of differential amplifier circuit output more than normal value, specifically, sampling Signal enters operational amplifier AR6, AR7, resistance R10- resistance R12 composition window comparator circuit and resistance R10- resistance after holding The normal range value that R12 bleeder circuit provides compares, and when being more than normal range (NR), exports high level, otherwise exports low level, high electricity Usually, triode Q5 conducting, bilateral diode VD1 conducting, thyristor VTL1 conducting, thyristor VTL1 switch K1 switched on are short It connects, signal receiving circuit output signal arrives without waiting for the sampling period namely switch K1 timing reaches closure Shi Zaixiang rear class electricity Road transmission, while the concussion electricity of trigger triode Q6, capacitor C5, capacitor C6, electrolytic capacitor E3, resistance R24, resistance R25 composition Road frequency modulation, signal signal after triode Q4 is the oscillating circuit homophony frequency of core, enters after signal and sampling are kept after frequency modulation Triode Q7 is the mixing of mixing amplifying circuit, the amplification of core, and the most high pass afterwards through electrolytic capacitor E4, E5, inductance L4 composition is filtered The low-pass filter circuit of wave circuit series inductance L5, L6, variable capacitance CP3 composition filters out the letter of other frequencies other than FM signal Number interference after be output to transmitter, otherwise triode Q5 cut-off, bilateral diode VD1 is not turned on, thyristor VTL1 is not turned on, Triode Q6, capacitor C5, capacitor C6, electrolytic capacitor E3, resistance R24, resistance R25 composition oscillating circuit do not have starting signal, It does not work, signal receiving circuit output signal is the oscillating circuit master of core through triode Q4 when switch K1 timing reaches closure After frequency modulation, amplify into the mixing amplifying circuit that triode Q7 is core, most afterwards through electrolytic capacitor E4, E5, inductance L4 composition The low-pass filter circuit of high-pass filtering circuit series inductance L5, L6, variable capacitance CP3 composition filters out other other than FM signal When being output to transmitter namely normal signal after the interference of frequency signal, signal is straight after homophony frequency when being arrived using the sampling period It connects and is added to transmitter transmission when signal is more than normal range (NR), transmitted using mixed signal is added to transmitter immediately, with This improves the anti-interference of signal, information monitoring platform receives the timeliness of exception information, and window comparator circuit exports high/low Level also triggers corresponding triode Q13/Q12 conducting, and 2/ reference frequency signal 1 of reference frequency signal is connected to frequency modulation feedback electricity Make reference frequency signal, including switch K1, the reverse phase of the anode operational amplifier AR7 of the left end and thyristor VTL1 of switch K1 in road Input terminal, operational amplifier AR6 non-inverting input terminal be all connected with the output end of operational amplifier AR3, the right end and crystalline substance of switch K1 The cathode of brake tube VTL1 connects the non-inverting input terminal of one end of ground capacity C2, operational amplifier AR5, operational amplifier AR5's Inverting input terminal and output end are separately connected the cathode of the cathode of electrolytic capacitor E1, varactor DC1, varactor DC1 Anode be separately connected one end of the collector of triode Q4, one end of capacitor C8, one end of capacitor C9, inductance L2, electrolysis electricity The anode for holding E1 connects power supply+5V with the other end of inductance L2, the other end of capacitor C8 be separately connected triode Q4 emitter, One end of ground resistance R17, the base stage of triode Q4 are separately connected one end of ground resistance R16, one end of resistance R15, electrolysis The cathode of capacitor E2, the other end of resistance R15, the anode of electrolytic capacitor E2 connect power supply+5V, and the other end of capacitor C9 connects respectively Connect one end of ground capacity C10, one end of grounded inductor L3, the base stage of triode Q7, resistance R26 one end, resistance R26's is another One end connects power supply+15V, and the emitter of triode Q7 is distinguished by the collector of resistance R23 connection power supply -10V, triode Q7 The cathode of electrolytic capacitor E4, one end of inductance L9 are connected, the other end of inductance L9 connects power supply+15V, the anode of electrolytic capacitor E4 It is separately connected the cathode of electrolytic capacitor E5, one end of grounded inductor L4, the anode of electrolytic capacitor E5 is separately connected the one of inductance L5 End, the other end of inductance L5 are separately connected one end of one end of ground connection variable capacitance CP3, inductance L6, and the other end of inductance L6 is The output signal of frequency modulation main circuit, is connected to transmitter, and the non-inverting input terminal of operational amplifier AR7 is separately connected resistance R10's One end, resistance R12 one end, the inverting input terminal of operational amplifier AR6 is separately connected the other end of resistance R12, ground resistance The other end of one end of R11, resistance R10 connects power supply+5V, calculates the output of the output end and operational amplifier AR6 of amplifier AR7 End is all connected with the base stage of triode Q5, and the collector of triode Q5 connects power supply+5V, and the emitter of triode Q5 connects resistance One end of R13, the other end of resistance R13 are separately connected one end of ground capacity C3, the left end of bilateral diode VD1, capacitor C4 One end, bilateral diode VD1 right end connection resistance R14 one end, resistance R14 the other end connection thyristor VTL1 control Pole processed, the other end of capacitor C4 are separately connected the base stage of one end of resistance R24, the anode of electrolytic capacitor E3, triode Q6, three poles The collector of pipe Q6 be separately connected one end of resistance R25, one end of capacitor C5, capacitor C6 one end, the other end of capacitor C6 point One end of the emitter of other connecting triode Q6, capacitor C7, the base stage of the other end connecting triode Q7 of capacitor C5, electrolytic capacitor The cathode of E3, the other end of capacitor C7 connect ground, and the other end of resistance R24 connects power supply -10V with the other end of resistance R25.
The frequency modulation feed circuit acquires the output signal and reference frequency signal of controllable FM circuit by diode D1 Coupled capacitor C12, C11 are connected to the circuit of frequency difference that triode Q8-Q11 is core respectively, calculate and believe with reference frequency Number frequency departure amount and switch to for 0-5V voltage, the low and high level that wherein reference frequency signal is exported by window comparator circuit, The conduction and cut-off of corresponding triode Q12, Q13 are driven, control reference frequency signal is that reference frequency signal 1 or reference frequency are believed Number 2(reference frequency signal 1, reference frequency signal 2 are previously given by frequency of signal generator, this is the prior art, herein not It is described in detail again), signal further controls frequency modulation and passes in setting after keeping with the sampling of the sampling holder in controllable sampling period after coupling Defeated frequency makes to include diode D1, and the other end of the anode connection inductance L6 of diode D1, the cathode of diode D1 connects capacitor One end of C12, the other end of capacitor C12 be separately connected the base stage of triode Q11, one end of inductance L8, variable capacitance CP2 one End, the collector of triode Q11 are separately connected the cathode of one end of resistance R19, electrolytic capacitor E6, the anode point of electrolytic capacitor E6 Not Lian Jie the anode of diode D2, triode Q9 emitter, the emitter of triode Q11, the cathode of diode D4, triode The base stage of Q9 is all connected with ground, and reference frequency signal connects one end of capacitor C11, and the other end of capacitor C11 is separately connected inductance L7 One end, one end of variable capacitance CP1, triode Q10 base stage, the collector of triode Q10 is separately connected the one of resistance R18 It holds, the cathode of electrolytic capacitor E7, the anode of electrolytic capacitor E7 is separately connected the emitter of the cathode of diode D3, triode Q8, The emitter of triode Q10, the cathode of electrolytic capacitor E8, resistance R20 the other end be all connected with ground, the base stage of triode Q8, electricity Resistance one end of R21, the anode of diode D3, the other end of resistance R18, resistance R19 the other end be all connected with power supply+10V, three poles The collector of pipe Q9, the other end of resistance R21, the anode of electrolytic capacitor E8, one end of resistance R20, triode Q8 collector It is all connected with one end of resistance R22, the cathode of the other end connection varactor DC1 of resistance R22.
Embodiment three, on the basis of example 2, the signal receiving circuit use operational amplifier AR4, triode Q1 is that the constant pressure source of core is that sensors X 1 provides stable power supply to compensate the nonlinearity erron of sensor, specific power supply Size is adjusted by the voltage of the pressure stabilizing value of voltage-stabiliser tube Z1, the adjustable end feedback of potentiometer RP1, and triode Q1 eliminates small wave Dynamic voltage provides constant voltage, provides after inductance L1 is further filtered, the site construction environmental signal that sensors X 1 detects (such as fugitive dust of the site construction ambient noise of DC-11 type noise transducer detection, the detection of PM2.5 fugitive dust sensor) is through capacitor It is added to the input terminal of the differential amplifier circuit of operational amplifier AR1, AR2, AR3 composition after C1 filtering, carries out differential balance amplification Processing inhibits the signal of common mode interference, amplification sensor output, and wherein operational amplifier AR3 is that subtraction proportional amplifier will be transported The output signal for calculating amplifier AR1, AR2 carries out subtraction and exports difference signal, i.e. sensor after elimination common mode interference is defeated Signal out, to guarantee the signal of differential amplifier circuit output between 0-5V, when abnormal signal high potential (be higher than 5V), three poles Pipe Q2 conducting ,+5V feed back to operational amplifier AR3 inverting input terminal that, play reduce output signal current potential purpose, work as letter When number abnormal low potential (being lower than 0V), triode Q3 conducting ,+0.7V feed back to operational amplifier AR3 non-inverting input terminal that, rise To the purpose for improving output signal current potential, received precision, including sensor detection are connect so as to improve the precision of sensor detection Interface X1, operational amplifier AR4, the inverting input terminal of operational amplifier AR4 by resistance R7 connection, operational amplifier AR4 Non-inverting input terminal be separately connected one end of the emitter of triode Q1, resistance R8, the other end of resistance R8 is separately connected resistance One end of R9, the anode of voltage-stabiliser tube Z1, potentiometer RP1 adjustable end, the other end of resistance R9 connects power supply+5V, voltage-stabiliser tube Z1 Cathode connect ground, the base stage of the output end connecting triode Q1 of operational amplifier AR4, the collector of triode Q1 connects inductance One end of L1, the pin 1 of the other end connection sensor detection interface X1 of inductance L1, the pin 2 of sensor detection interface X1 divide Not Lian Jie one end of capacitor C1, operational amplifier AR2 non-inverting input terminal, the inverting input terminal of operational amplifier AR2 connects respectively The output end of operational amplifier AR2, one end of resistance R1 are connect, the other end of resistance R1 is separately connected the anti-of operational amplifier AR3 Phase input terminal, one end of resistance R3, triode Q2 emitter, the other end of resistance R3 is separately connected one end of resistance R6, electricity The left end of position device RP1, the output end of operational amplifier AR3, resistance R5 the other end, sensor detects 3 He of pin of interface X1 The inverting input terminal of the other end connection operational amplifier AR1 of capacitor C1, the non-inverting input terminal of operational amplifier AR1 are separately connected One end of the output end of operational amplifier AR1, resistance R2, the other end of resistance R2 are separately connected the same phase of operational amplifier AR3 Input terminal, one end of ground resistance R4, triode Q3 emitter, the collector of triode Q3 connects power supply+0.7V, triode One end of the base stage connection resistance R5 of Q3.
When the present invention is specifically used, the data acquisition module examines site construction environmental parameter by sensor It surveys, is transferred to information monitoring platform through communication module and realizes monitoring, and controllable execution module carries out caution device alarm and controls It manages equipment to administer, the site construction environmental parameter signals of sensor detection are anti-through signal receiving circuit, controllable FM circuit, frequency modulation It is transmitted directly to monitor supervision platform through transmitter after current feed circuit controllable period frequency modulation, is supervised so as to improve anti-interference, the information of signal Control the timeliness that platform receives exception information;The signal receiving circuit uses operational amplifier AR4, triode Q1 for core Constant pressure source is the nonlinearity erron that sensors X 1 provides stable power supply to compensate sensor, and the size of specific power supply passes through steady The pressure stabilizing value of pressure pipe Z1, the voltage of the adjustable end feedback of potentiometer RP1 are adjusted, and triode Q1 eliminates small fluctuation voltage and provides Constant voltage provides after inductance L1 is further filtered, site construction environmental signal (such as DC-11 type that sensors X 1 detects The fugitive dust etc. that the site construction ambient noise of noise transducer detection, PM2.5 fugitive dust sensor detect) add after capacitor C1 filtering The input terminal of the differential amplifier circuit formed to operational amplifier AR1, AR2, AR3, carries out differential balance enhanced processing, inhibits altogether Mould interference, amplification sensor output signal, wherein operational amplifier AR3 be subtraction proportional amplifier by operational amplifier AR1, The output signal of AR2 carries out subtraction and exports difference signal, i.e. sensor output signal after elimination common mode interference, to guarantee The signal of differential amplifier circuit output is between 0-5V, when abnormal signal high potential (being higher than 5V), triode Q2 conducting, and+5V Feed back operational amplifier AR3 inverting input terminal that, play reduce output signal current potential purpose, when abnormal signal low potential When (be lower than 0V), triode Q3 conducting ,+0.7V feed back to operational amplifier AR3 non-inverting input terminal that, play raising output letter The purpose of number current potential connects received precision so as to improve the precision of sensor detection, and the controllable FM circuit receives signal and connects Circuit output signal is received, the controllable sampling through operational amplifier AR5, switch K1 in parallel and thyristor VTL1, capacitor C2 composition The sampling holder in period, which samples, to be kept, and the retention time is determined by the charge and discharge of capacitor C2, and switch K1 is time switch, and control is adopted In the period of sample, wherein thyristor VTL1 is led when window comparator circuit judges the signal of differential amplifier circuit output more than normal value It is logical, specifically, signal enters operational amplifier AR6, AR7, resistance R10- resistance R12 composition window comparator circuit after sampling is kept Compared with the normal range value that resistance R10- resistance R12 bleeder circuit provides, when being more than normal range (NR), high level is exported, otherwise Low level is exported, when high level, triode Q5 conducting, bilateral diode VD1 conducting, thyristor VTL1 conducting, switch K1 are led Logical thyristor VTL1 is shorted, and signal receiving circuit output signal arrives without waiting for the sampling period namely switch K1 timing reaches It is closed Shi Zaixiang rear class circuit transmission, while trigger triode Q6, capacitor C5, capacitor C6, electrolytic capacitor E3, resistance R24, resistance The oscillating circuit frequency modulation of R25 composition, signal is the oscillating circuit master of core through triode Q4 after signal and sampling are kept after frequency modulation Signal after frequency modulation into the mixing amplifying circuit mixing that triode Q7 is core, amplifies, most afterwards through electrolytic capacitor E4, E5, inductance L4 composition high-pass filtering circuit series inductance L5, L6, variable capacitance CP3 composition low-pass filter circuit filter out FM signal with It is output to transmitter after the interference of outer other frequency signals, information monitoring platform is sent to by transmitter, otherwise triode Q5 Cut-off, bilateral diode VD1 is not turned on, thyristor VTL1 is not turned on, triode Q6, capacitor C5, capacitor C6, electrolytic capacitor E3, The oscillating circuit of resistance R24, resistance R25 composition does not have starting signal, does not work, and signal receiving circuit output signal is in switch K1 When timing reaches closure after triode Q4 is the oscillating circuit homophony frequency of core, amplify into the mixing that triode Q7 is core Circuit amplification, high-pass filtering circuit series inductance L5, L6, variable capacitance most afterwards through electrolytic capacitor E4, E5, inductance L4 composition The low-pass filter circuit of CP3 composition is output to transmitter after filtering out the interference of other frequency signals other than FM signal, namely When signal is normal, signal is applied directly to transmitter transmission and works as signal be more than normal model after homophony frequency when being arrived using the sampling period When enclosing, using mixed signal is added to transmitter transmission immediately, connect so as to improve the anti-interference of signal, information monitoring platform The timeliness of exception information is received, the high/low level of window comparator circuit output also triggers corresponding triode Q13/Q12 conducting, 2/ reference frequency signal 1 of reference frequency signal is connected to frequency modulation feed circuit and makees reference frequency signal, the frequency modulation feed circuit The output signal of controllable FM circuit is acquired by diode D1 and reference frequency signal is distinguished coupled capacitor C12, C11 and connected It is the circuit of frequency difference of core to triode Q8-Q11, calculates the frequency departure amount with reference frequency signal and switch to for 0-5V Voltage, the low and high level that wherein reference frequency signal is exported by window comparator circuit drive leading for corresponding triode Q12, Q13 Logical/cut-off, control reference frequency signal are reference frequency signal 1 or reference frequency signal 2(reference frequency signal 1, reference frequency Signal 2 is previously given by frequency of signal generator, this is the prior art, and this will not be detailed here), with adopting for controllable sampling period Frequency modulation is further controlled after the sampling of sample retainer is kept after signal coupling in setting transmission frequency, improves the stabilization of signal transmission Property.

Claims (3)

1. wisdom chemical industry ground construction environment signal acquisition emitter, including data acquisition module, communication module, monitor supervision platform, Execution module, the data acquisition module detect site construction environmental parameter by sensor, transmit through communication module It realizes and monitors to information monitoring platform, and controllable execution module carries out caution device alarm and abatement equipment is administered, feature It is, the site construction environmental parameter signals of sensor detection are through signal receiving circuit, controllable FM circuit, frequency modulation feed circuit It is transmitted directly to monitor supervision platform through transmitter after controllable period frequency modulation, anti-interference, information monitoring platform so as to improve signal Receive the timeliness of exception information;
It for the constant pressure source of core is that sensors X 1 provides electricity that the signal receiving circuit, which uses operational amplifier AR4, triode Q1, Source, the differential amplifier circuit output that the site construction environmental signal of sensor detection is formed through operational amplifier AR1, AR2, AR3, Signal to guarantee differential amplifier circuit output feeds back abnormal high/low current potential to operation using triode Q2/Q3 between 0-5V The input terminal of amplifier AR3, the controllable FM circuit receive signal receiving circuit output signal, through operational amplifier AR5, simultaneously The sampling holder in the controllable sampling period of switch K1 and thyristor VTL1 capacitor the C2 composition of connection, which samples, to be kept, wherein thyristor VTL1 is connected when window comparator circuit judges the signal of differential amplifier circuit output more than normal value, and trigger triode Q6 is The oscillating circuit frequency modulation of core, after frequency modulation signal and triode Q4 be core oscillating circuit homophony frequency after signal through triode Q7 For the mixing of mixing amplifying circuit, the amplification of core, the high-pass filtering circuit string most formed afterwards through electrolytic capacitor E4, E5, inductance L4 The low-pass filter circuit that connection inductance L5, L6, variable capacitance CP3 are formed filters out the interference of other frequency signals other than FM signal After be output to transmitter, also trigger corresponding triode Q13/Q12 conducting, the connection of 2/ reference frequency signal 1 of reference frequency signal Make reference frequency signal to frequency modulation feed circuit, the frequency modulation feed circuit acquires the output signal of controllable FM circuit, through three Pole pipe Q8-Q11 is the circuit of frequency difference of core, calculates the frequency departure amount with reference frequency signal and switchs to for 0-5V electricity Pressure, signal further controls frequency modulation after coupling after keeping with the sampling of the sampling holder in controllable sampling period.
2. wisdom chemical industry as described in claim 1 ground construction environment signal acquisition emitter, which is characterized in that described controllable FM circuit includes switch K1, inverting input terminal, the fortune of the anode operational amplifier AR7 of the left end and thyristor VTL1 of switch K1 The non-inverting input terminal for calculating amplifier AR6 is all connected with the output end of operational amplifier AR3, the right end of switch K1 and thyristor VTL1's Cathode connects the non-inverting input terminal of one end of ground capacity C2, operational amplifier AR5, the inverting input terminal of operational amplifier AR5 It is separately connected the cathode of electrolytic capacitor E1, the cathode of varactor DC1 with output end, the anode of varactor DC1 is respectively The collector of connecting triode Q4, one end of capacitor C8, one end of capacitor C9, inductance L2 one end, the anode of electrolytic capacitor E1 Power supply+5V is connected with the other end of inductance L2, the other end of capacitor C8 is separately connected the emitter of triode Q4, ground resistance One end of R17, the base stage of triode Q4 are separately connected one end of ground resistance R16, one end of resistance R15, electrolytic capacitor E2 Cathode, the other end of resistance R15, the anode of electrolytic capacitor E2 connect power supply+5V, and the other end of capacitor C9 is separately connected ground connection electricity Hold one end of C10, one end of grounded inductor L3, the base stage of triode Q7, resistance R26 one end, resistance R26 the other end connection The emitter of power supply+15V, triode Q7 are separately connected electrolysis by resistance R23 connection power supply -10V, the collector of triode Q7 The other end of one end of the cathode of capacitor E4, inductance L9, inductance L9 connects power supply+15V, and the anode of electrolytic capacitor E4 is separately connected One end of the cathode of electrolytic capacitor E5, grounded inductor L4, the anode of electrolytic capacitor E5 are separately connected one end of inductance L5, inductance L5 The other end be separately connected one end of ground connection one end of variable capacitance CP3, inductance L6, the other end of inductance L6 is frequency modulation main circuit Output signal, be connected to transmitter, the non-inverting input terminal of operational amplifier AR7 is separately connected one end of resistance R10, resistance One end of R12, the inverting input terminal of operational amplifier AR6 are separately connected one end of the other end of resistance R12, ground resistance R11, The other end of resistance R10 connects power supply+5V, and the output end of the output end and operational amplifier AR6 of calculating amplifier AR7 is all connected with three The base stage of pole pipe Q5, the collector of triode Q5 connect power supply+5V, one end of the emitter connection resistance R13 of triode Q5, electricity Resistance R13 the other end be separately connected one end of ground capacity C3, the left end of bilateral diode VD1, capacitor C4 one end, two-way two One end of the right end connection resistance R14 of pole pipe VD1, the control electrode of the other end connection thyristor VTL1 of resistance R14, capacitor C4's The other end is separately connected the base stage of one end of resistance R24, the anode of electrolytic capacitor E3, triode Q6, the collector of triode Q6 Be separately connected one end of resistance R25, one end of capacitor C5, capacitor C6 one end, the other end of capacitor C6 is separately connected triode One end of the emitter of Q6, capacitor C7, the base stage of the other end connecting triode Q7 of capacitor C5, cathode, the electricity of electrolytic capacitor E3 The other end for holding C7 connects ground, and the other end of resistance R24 connects power supply -10V with the other end of resistance R25;
The frequency modulation feed circuit includes diode D1, and the anode of diode D1 connects the other end of inductance L6, diode D1's Cathode connect capacitor C12 one end, the other end of capacitor C12 be separately connected the base stage of triode Q11, inductance L8 one end, can One end of CP2 is held in power transformation, and the collector of triode Q11 is separately connected the cathode of one end of resistance R19, electrolytic capacitor E6, is electrolysed The anode of capacitor E6 is separately connected the emitter of the anode of diode D2, triode Q9, emitter, the diode of triode Q11 The cathode of D4, the base stage of triode Q9 are all connected with ground, and reference frequency signal connects one end of capacitor C11, the other end of capacitor C11 Be separately connected one end of inductance L7, one end of variable capacitance CP1, triode Q10 base stage, triode Q10 collector difference One end of resistance R18, the cathode of electrolytic capacitor E7 are connected, the anode of electrolytic capacitor E7 is separately connected the cathode of diode D3, three The emitter of pole pipe Q8, the emitter of triode Q10, the cathode of electrolytic capacitor E8, resistance R20 the other end be all connected with ground, three The base stage of pole pipe Q8, one end of resistance R21, the anode of diode D3, the other end of resistance R18, resistance R19 the other end connect Connect power supply+10V, the collector of triode Q9, the other end of resistance R21, the anode of electrolytic capacitor E8, one end of resistance R20, three The collector of pole pipe Q8 is all connected with one end of resistance R22, the cathode of the other end connection varactor DC1 of resistance R22.
3. wisdom chemical industry as described in claim 1 ground construction environment signal acquisition emitter, which is characterized in that the signal Receiving circuit includes sensor detection interface X1, operational amplifier AR4, and the inverting input terminal of operational amplifier AR4 passes through resistance R7 connection ground, the non-inverting input terminal of operational amplifier AR4 are separately connected one end of the emitter of triode Q1, resistance R8, resistance The other end of R8 is separately connected the adjustable end of one end of resistance R9, the anode of voltage-stabiliser tube Z1, potentiometer RP1, and resistance R9's is another The cathode connection ground of end connection power supply+5V, voltage-stabiliser tube Z1, the base stage of the output end connecting triode Q1 of operational amplifier AR4, three One end of the collector connection inductance L1 of pole pipe Q1, the pin 1 of the other end connection sensor detection interface X1 of inductance L1, sensing The pin 2 of device detection interface X1 is separately connected the non-inverting input terminal of one end of capacitor C1, operational amplifier AR2, operational amplifier The inverting input terminal of AR2 is separately connected one end of the output end of operational amplifier AR2, resistance R1, the other end difference of resistance R1 Connect the inverting input terminal of operational amplifier AR3, one end of resistance R3, triode Q2 emitter, the other end of resistance R3 point Not Lian Jie one end of resistance R6, the left end of potentiometer RP1, the output end of operational amplifier AR3, resistance R5 the other end, sensing The pin 3 of device detection interface X1 connects the inverting input terminal of operational amplifier AR1, operational amplifier with the other end of capacitor C1 The non-inverting input terminal of AR1 is separately connected one end of the output end of operational amplifier AR1, resistance R2, the other end difference of resistance R2 Connect the non-inverting input terminal of operational amplifier AR3, one end of ground resistance R4, triode Q3 emitter, the collection of triode Q3 Electrode connects power supply+0.7V, one end of the base stage connection resistance R5 of triode Q3.
CN201910457766.5A 2019-05-29 2019-05-29 Wisdom chemical industry ground construction environment signal acquisition emitter Active CN110085019B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910457766.5A CN110085019B (en) 2019-05-29 2019-05-29 Wisdom chemical industry ground construction environment signal acquisition emitter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910457766.5A CN110085019B (en) 2019-05-29 2019-05-29 Wisdom chemical industry ground construction environment signal acquisition emitter

Publications (2)

Publication Number Publication Date
CN110085019A true CN110085019A (en) 2019-08-02
CN110085019B CN110085019B (en) 2019-12-24

Family

ID=67422352

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910457766.5A Active CN110085019B (en) 2019-05-29 2019-05-29 Wisdom chemical industry ground construction environment signal acquisition emitter

Country Status (1)

Country Link
CN (1) CN110085019B (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111049551A (en) * 2019-12-31 2020-04-21 郑州航空工业管理学院 Anti-interference transmission device of network signal
CN111294303A (en) * 2020-03-16 2020-06-16 无锡原旭机电科技有限公司 Bridge safety management system based on Internet of things
CN111654305A (en) * 2020-06-08 2020-09-11 郑州工业应用技术学院 Computer network communication transmission system
CN112942169A (en) * 2021-03-07 2021-06-11 广东省高速公路有限公司京珠北分公司 Road maintenance operation acousto-optic warning system and method
CN113179395A (en) * 2021-04-30 2021-07-27 深圳市金乾象科技有限公司 Camera remote monitoring video transmission device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080048780A1 (en) * 2006-08-25 2008-02-28 Electronics And Telecommunications Research Institute Linearization apparatus of triode region type operational transconductance amplifier
CN105357416A (en) * 2015-11-27 2016-02-24 成都思博特科技有限公司 High-definition image processing system based on coupled circuit and level conversion circuit
CN106786667A (en) * 2016-12-23 2017-05-31 芜湖国睿兆伏电子有限公司 A kind of phase shift frequency modulation mixing control circuit for LLC resonant powers
CN109639295A (en) * 2018-12-29 2019-04-16 河南鑫安利职业健康科技有限公司 Noise testing real-time data transmission transmitter modulation device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080048780A1 (en) * 2006-08-25 2008-02-28 Electronics And Telecommunications Research Institute Linearization apparatus of triode region type operational transconductance amplifier
CN105357416A (en) * 2015-11-27 2016-02-24 成都思博特科技有限公司 High-definition image processing system based on coupled circuit and level conversion circuit
CN106786667A (en) * 2016-12-23 2017-05-31 芜湖国睿兆伏电子有限公司 A kind of phase shift frequency modulation mixing control circuit for LLC resonant powers
CN109639295A (en) * 2018-12-29 2019-04-16 河南鑫安利职业健康科技有限公司 Noise testing real-time data transmission transmitter modulation device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111049551A (en) * 2019-12-31 2020-04-21 郑州航空工业管理学院 Anti-interference transmission device of network signal
CN111049551B (en) * 2019-12-31 2021-04-02 郑州航空工业管理学院 Anti-interference transmission device of network signal
CN111294303A (en) * 2020-03-16 2020-06-16 无锡原旭机电科技有限公司 Bridge safety management system based on Internet of things
CN111654305A (en) * 2020-06-08 2020-09-11 郑州工业应用技术学院 Computer network communication transmission system
CN112942169A (en) * 2021-03-07 2021-06-11 广东省高速公路有限公司京珠北分公司 Road maintenance operation acousto-optic warning system and method
CN113179395A (en) * 2021-04-30 2021-07-27 深圳市金乾象科技有限公司 Camera remote monitoring video transmission device

Also Published As

Publication number Publication date
CN110085019B (en) 2019-12-24

Similar Documents

Publication Publication Date Title
CN110085019A (en) Wisdom chemical industry ground construction environment signal acquisition emitter
CN110136423A (en) Intelligent site construction environmental detection set
CN108988820A (en) A kind of Analysis of Network Information system
CN109194349A (en) A kind of construction real-time monitoring system based on Internet of Things
CN108664074B (en) Hospital environment monitoring system based on Internet of things
CN109347976B (en) Robot remote real-time monitoring system based on cloud computing
CN109831180A (en) A kind of water supply remote monitoring system signal compensation circuit
CN110217109A (en) A kind of power-supply management system of green novel energy source automobile
CN111504868B (en) Building construction raise dust monitoring system based on big data
CN109787565A (en) A kind of multi-action computer data acquisition device
CN112506113B (en) Smart city electric power big data information acquisition system
CN109612886A (en) Operating environment precaution device
CN109512400B (en) Monitoring device for feeding back body indexes of special operating personnel in real time
CN109660252A (en) Portable meteorological measuring set signal calibration device
CN210244635U (en) Road traffic signal lamp based on 5G technology
CN208433949U (en) A kind of Analysis of Network Information system
CN202453327U (en) Ultrasonic wall detector
CN204903345U (en) Reliable dust concentration detector of high stable
CN206712473U (en) A kind of three-phase imbalance automatic straightening system
CN206496788U (en) A kind of novel intelligent environmental monitoring terminal
CN104142185A (en) Oil and water temperature collecting circuit for hydraulic retarder
CN105974464B (en) A kind of wave detector for oil exploration using wireless communication technique
CN109765153B (en) Atmosphere dust monitoring system based on GPS
CN204988537U (en) Temperature transmitter
CN212008883U (en) Network transformer fault alarm system

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant