CN106249654A - A kind of hydraulic turbine temperature signal regulation type monitoring system based on network technology - Google Patents
A kind of hydraulic turbine temperature signal regulation type monitoring system based on network technology Download PDFInfo
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- CN106249654A CN106249654A CN201610740410.9A CN201610740410A CN106249654A CN 106249654 A CN106249654 A CN 106249654A CN 201610740410 A CN201610740410 A CN 201610740410A CN 106249654 A CN106249654 A CN 106249654A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0428—Safety, monitoring
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/25—Pc structure of the system
- G05B2219/25341—Single chip programmable controller
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Abstract
The invention discloses a kind of hydraulic turbine temperature signal regulation type monitoring system based on network technology, it is characterised in that mainly by main station system, with the substation system composition being connected with main station system by wireless network；Described main station system is by the first single-chip microcomputer, data storage, display, data processor and signal processing unit, and the first wireless transport module composition；Described substation system by second singlechip, the second wireless transport module, air cooler, and the temperature cruise instrument A, the temperature cruise instrument B that are all connected with second singlechip by RS 485 bus and temperature cruise instrument C composition.The signal that the substation system of the present invention is gathered is sent to main station system by wireless network, it is not necessary to by connection, makes whole monitoring system simpler, and monitoring information transmission is faster, and cost is lower.
Description
Technical field
The present invention relates to a kind of network technology, specifically, be a kind of hydraulic turbine temperature based on network technology letter
Number conditioning-type monitoring system.
Background technology
The hydraulic turbine is the dynamic power machine energy of current being converted to rotating mechanical energy, and it belongs to the turbine in fluid machinery
Machinery.Before and after B.C. 100 years, China has occurred as soon as the blank water wheels of the hydraulic turbine, is used for irrigating by lifting water to a higher level with a water pump, etc. and driving grain processing
Apparatus.The modern hydraulic turbine in then great majority are arranged on power station, is used for driving electrical power generators.And the hydraulic turbine is operationally because holding
The load being subject to is very big, then the temperature that can make the hydraulic turbine is too high, i.e. the hydraulic turbine can be tall and big in the temperature that electromotor is driven formula
500 DEG C, work will break down if the hydraulic turbine is chronically under the high temperature of 500 DEG C, cause the hydraulic turbine cannot drive generating
Machine generates electricity.In order to the temperature preventing the hydraulic turbine is too high, people just use point-to-point monitor mode to carry out the temperature of the hydraulic turbine
Monitoring in real time, but, the existing point-to-point monitor mode being monitored hydraulic turbine temperature exists supervises hydraulic turbine temperature
The problem of the poor accuracy of control, causes monitoring personnel can not grasp hydraulic turbine temperature accurately, and the temperature causing the hydraulic turbine is too high,
And break down；And existing point-to-point monitor mode there is also information transmission problem not in time, causes monitoring personnel
Timely the high temperature of the hydraulic turbine can not be processed.
Therefore it provides a kind of effect that can improve the monitoring temperature to the hydraulic turbine, monitoring information can be carried out in time again
The hydraulic turbine temperature monitoring system of transmission is the task of top priority.
Summary of the invention
It is an object of the invention to overcome the existing point-to-point monitor mode that hydraulic turbine temperature is monitored to exist
Poor accuracy to hydraulic turbine monitoring temperature, the defect that monitoring information can not be transmitted timely, it is provided that one based on net
The hydraulic turbine temperature signal regulation type monitoring system of network technology.
To achieve these goals, the scheme that the present invention uses is as follows: a kind of hydraulic turbine temperature based on network technology is believed
Number conditioning-type monitoring system, mainly by main station system, with the substation system composition being connected with main station system by wireless network；
Described main station system by the first single-chip microcomputer, the data storage being all connected with the first single-chip microcomputer, display, data processor and
Signal processing unit, and the first wireless transport module composition being connected with signal processing unit；Described substation system is by
Two single-chip microcomputers, the second wireless transport module being connected with second singlechip respectively and air cooler, and all total by RS-485
Temperature cruise instrument A, temperature cruise instrument B and temperature cruise instrument C that line is connected with second singlechip form；Described first wireless biography
Defeated module is connected by wireless network with the second wireless transport module；Described first single-chip microcomputer also with the first wireless transport module
It is connected.
Described signal processing unit is by processing chip U, and audion VT2, positive pole is connected with the base stage of audion VT2, bears
Pole and polar capacitor C5, the P pole that is connected of CF pin processing chip U base stage with audion VT2 after resistance R9 is connected,
The diode D3 that N pole is connected with the colelctor electrode of audion VT2, negative pole be connected with the P pole of diode D3 after ground connection, positive pole with
The polar capacitor C6 that the emitter stage of audion VT2 is connected, positive pole emitter stage with audion VT2 after resistance R10 is connected,
Negative pole and the polar capacitor C7 that is connected of CM pin processing chip U, respectively with process the IN pin of chip U and VS pin and
The signal wave reception filtering circuit that first wireless transport module is connected, is connected with the CM pin processing chip U and VS pin respectively
The signal level regulation circuit connect, and it is serially connected in the signal processed between the OUT pin of chip U and signal level regulation circuit
Modulate circuit forms；The COM pin of described process chip U is connected with OUT pin and CM pin respectively；Described audion VT2
Base stage also with process chip U IN pin be connected, its emitter stage then with process chip U CC pin be connected；Described letter
Number level adjustment circuit and the first single-chip microcomputer are connected.
Further, described signal conditioning circuit is by amplifier P3, amplifier P4, audion VT5, audion VT6, positive pole
The polar capacitor C11 that positive pole with amplifier P3 is connected after inductance L3, negative pole is connected with the OUT pin of process chip U,
P pole diode that positive pole is connected, N pole is connected with the colelctor electrode of audion VT5 with polar capacitor C11 after resistance R20
D7, positive pole pole that colelctor electrode is connected, negative pole is connected with the colelctor electrode of audion VT6 with audion VT5 after resistance R25
Property electric capacity C14, the resistance that one end is connected with the positive pole of polar capacitor C14, the other end is connected with the base stage of audion VT5
R26, positive pole outfan with amplifier P3 after resistance R21 is connected, negative pole after resistance R24 with the positive pole phase of amplifier P4
Polar capacitor C12, the P pole connected negative pole with amplifier P3 after resistance R22 is connected, N pole is sequentially through resistance R23 and resistance
The diode D8 that after R27, outfan with amplifier P4 is connected, negative pole is connected with the P pole of diode D8, positive pole and amplification
The negative pole of device P3 be connected after the polar capacitor C13 of ground connection, and positive pole is connected with the emitter stage of audion VT6, negative pole with
The negative pole of amplifier P4 be connected after ground connection polar capacitor C15 composition；The grounded emitter of described audion VT5；Described put
The positive pole of big device P4 also base stage with audion VT6 is connected, its outfan is also connected with signal level regulation circuit.
Described signal wave reception filtering circuit by amplifier P1, audion VT1, positive pole after resistance R5 with audion VT1's
The polar capacitor C2 that base stage is connected, negative pole and the first wireless transport module are connected, the negative pole phase of positive pole and polar capacitor C2
Connect, polar capacitor C4, P pole that negative pole negative pole with amplifier P1 after resistance R7 is connected after resistance R8 with amplifier P1
The diode D2 that negative pole is connected, N pole is connected with the outfan of amplifier P1, one end is connected with the P pole of diode D2,
Inductance L1, the P pole that the other end is connected with the outfan of amplifier P1 is connected with the positive pole of amplifier P1, N pole is through resistance R3
The diode D1 that colelctor electrode with audion VT1 is connected afterwards, positive pole P pole with diode D1 after resistance R1 is connected, negative
The polar capacitor C1 that pole colelctor electrode with audion VT1 after resistance R2 is connected, and positive pole after resistance R4 with audion
The polar capacitor C3 composition that the colelctor electrode of VT1 is connected, negative pole outfan with amplifier P1 after resistance R6 is connected；Described
The emitter stage of audion VT1 is connected with the outfan of amplifier P1；The minus earth of described amplifier P1, its positive pole also with pole
Property electric capacity C2 positive pole be connected, its outfan also with process chip U IN pin be connected；The negative pole of described polar capacitor C1
Ground connection；The negative pole of described polar capacitor C3 is also connected with the VS pin processing chip U.
Described signal level regulation electricity routing amplifier P2, field effect transistor MOS, audion VT3, audion VT4, one end with
The colelctor electrode of audion VT3 is connected, resistance R11, the P pole of other end ground connection is connected with the emitter stage of audion VT3, N pole
The diode D4 that colelctor electrode with audion VT4 is connected after adjustable resistance R15, positive pole after resistance R13 with amplifier P2
Polar capacitor C8, the P pole that negative pole is connected, negative pole outfan with amplifier P2 after resistance R14 is connected and amplifier
The negative pole of P2 be connected after the diode D5 that is connected of ground connection, N pole negative pole with polar capacitor C8 after resistance R12, positive pole with
The polar capacitor C9 that the drain electrode of field effect transistor MOS is connected, negative pole is connected with the emitter stage of audion VT3, one end and three poles
The resistance R16 that the colelctor electrode of pipe VT4 is connected, the other end is connected with the outfan of amplifier P4, positive pole after resistance R18 with
The base stage of audion VT4 is connected, negative pole is connected with the outfan of amplifier P2 polar capacitor C10, P pole and audion
The diode D6 that the base stage of VT4 is connected, N pole negative pole with polar capacitor C10 after resistance R19 is connected, one end and process
The inductance L2 that the VS pin of chip U is connected, the other end is connected with the source electrode of field effect transistor MOS, and one end and field effect
The adjustable resistance R17 composition that the grid of pipe MOS is connected, the other end is connected with the base stage of audion VT4；Described audion
The emitter stage of VT3 also negative pole with polar capacitor C9 is connected, its base stage is then connected with the CM pin processing chip U；Described
The N pole of diode D4 also negative pole with amplifier P2 is connected；The emitter stage of described audion VT4 and the positive pole phase of amplifier P2
Connect；Outfan and first single-chip microcomputer of described amplifier P2 are connected.
For the practical effect of the present invention, described process chip U the most preferentially have employed the integrated chip of AD736 and comes real
Existing.
The present invention compared with prior art, has the following advantages and beneficial effect:
(1) signal that the substation system of the present invention is gathered is sent to main station system by wireless network, it is not necessary to pass through line
Road connects, and makes whole monitoring system simpler, and monitoring information transmission is faster, and cost is lower.
(2) the interference signal in the signal received can be eliminated or suppress by the present invention；And can be in the signal of output
Low current signal or charge signal be amplified, make signal more stable, and signal frequency can also be fixed by the present invention
The dutycycle of square wave be adjusted, the level making the digital signal that the present invention exports is more stable, thus improves the present invention
Accuracy to signal processing, effectively ensure that the present invention accuracy to hydraulic turbine monitoring temperature, makes the monitoring personnel can be very
Fast discovery hydraulic turbine temperature anomaly, and the source of trouble can be positioned accurately and discharge.
(3) bandwidth of digital signal can be limited by the present invention, to filter the High-frequency Interference in digital signal and spike
Burr, and the High-frequency Interference in digital signal is filtered, make digital signal more totally, more steadily, effectively raise
The signal processing unit of the present invention accuracy to signal processing, ensures that accurate to hydraulic turbine monitoring temperature of the present invention
Property.
(4) the process chip U of the present invention the most preferentially have employed the integrated chip of AD736 and realizes, this chip and peripheral circuit
Combine, can effectively improve stability and the reliability of the present invention.
Accompanying drawing explanation
Fig. 1 is the overall structure block diagram of the present invention.
Fig. 2 is the electrical block diagram of the signal processing unit of the present invention.
Fig. 3 is the electrical block diagram of the signal conditioning circuit of the present invention.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing thereof, the present invention is described in further detail, but embodiments of the present invention are not
It is limited to this.
Embodiment
As it is shown in figure 1, the present invention is mainly by main station system, with the substation system being connected with main station system by wireless network
System composition.Described main station system as it is shown in figure 1, it is by the first single-chip microcomputer, the data storage being all connected with the first single-chip microcomputer,
Display, data processor and signal processing unit, and the first wireless transport module group being connected with signal processing unit
Become.Described substation system is as it is shown in figure 1, it is wirelessly transferred by second singlechip, second be connected with second singlechip respectively
Module and air cooler, and temperature cruise instrument A, the temperature cruise instrument B being all connected with second singlechip by RS-485 bus
Form with temperature cruise instrument C；Described first wireless transport module and the second wireless transport module are connected by wireless network；Institute
State the first single-chip microcomputer to be also connected with the first wireless transport module.
In order to ensure the reliability service of the present invention, first single-chip microcomputer of the present invention and second singlechip the most preferentially have employed
FM8PE59A single-chip microcomputer realizes.The TI0 pin of this first single-chip microcomputer is connected with data storage, at PIN pin and signal
Reason unit is connected, and POUT1 pin is connected with data processor, and POUT2 pin is connected with display.Meanwhile, second is single
POUT0 pin and second wireless transport module of sheet machine are connected, and CLK pin is connected with air cooler, PIN0-PIN2 pin with
Being connected by USB interface of RS-485 bus.Described RS-485 bus the most respectively with temperature cruise instrument A, temperature cruise instrument B
It is connected with temperature cruise instrument C.
During enforcement, the temperature cruise instrument A and temperature cruise instrument B of the substation system of the present invention and temperature cruise instrument C all adopt
With TCD-48 digital temperature logging.Temperature cruise instrument uses MCS-51 single-chip microcomputer to be kernel, and Pt100 platinum resistance thermometer sensor, is as survey
Temperature element, temperature-measuring range is-200～500 DEG C, and measuring temperature resolution is 0.1 DEG C.TCD-48 digital temperature logging every can
Gather 48 focuses of monitoring, present invention employs 3 TCD-48 digital temperature loggings and the temperature of the hydraulic turbine is monitored,
The number of units of its TCD-48 digital temperature logging can increase and decrease according to the different model of the hydraulic turbine.Described temperature cruise instrument A
With the periphery that temperature cruise instrument B and temperature cruise instrument C is separately positioned on the hydraulic turbine, and temperature cruise instrument A and temperature cruise instrument B
And temperature cruise instrument C puts into equilateral triangle centered by the hydraulic turbine and is distributed in the periphery different heat to the hydraulic turbine of the hydraulic turbine
Point is monitored.Meanwhile, the present invention uses the serial data bus of RS-485 interface to complete 3 temperature cruise instruments and the second list
The two-way communication of sheet machine, the serial conversion interface of this RS-485 interface is connected with the communication interface of second singlechip, and described
The second wireless transport module that two single-chip microcomputers are transferred to by signal output part after being analyzed processing to the signal received.Described
Second wireless transport module then transmits information to main station system the first wireless transport module by wireless network, and the present invention can adopt
Signal transmission is carried out with mobile internet or other network.
Meanwhile, reception is then that signal is transferred to signal processing unit by the second wireless transport module, this signal processing unit
Interference signal in the signal received is eliminated or suppresses；And can be to the low current signal in the signal of output or electric charge
Signal is amplified, and makes signal more stable, and the dutycycle of the square wave that signal frequency is fixed can also be carried out by the present invention
Regulation, the level making the digital signal that the present invention exports is more stable.Signal after signal processing unit will process is converted to numeral
Being transferred to the first single-chip microcomputer after signal, this first single-chip microcomputer obtains the temperature of the hydraulic turbine after being processed by the digital signal of reception
Digital point is transferred to data processor, and this data processor and the first single-chip microcomputer are for being bi-directionally connected, and data processor is to this temperature
Digital point obtains the actual temperature value of the hydraulic turbine after being analyzed, data processor the actual temperature value of the hydraulic turbine that will obtain
Being shown on display by the first single-chip microcomputer, monitoring personnel just can be by the actual temperature of the hydraulic turbine shown on display
The temperature of the hydraulic turbine is supervised by value, and the actual temperature value of the hydraulic turbine is transferred to coupled by the first single-chip microcomputer simultaneously
Data storage stores, in order to monitoring personnel check later.
When hydraulic turbine temperature value shown on display high with 100 DEG C time, monitoring personnel are then by the of main station system
One single-chip microcomputer sends the instruction opening air cooler, and this instruction gives second by the first wireless transport module by wireless network transmissions
Wireless transport module, the command signal of reception is transferred to second singlechip by the second wireless transport module, second singlechip then root
Control air cooler according to the signal carried out to open, i.e. the hydraulic turbine is dispelled the heat by air cooler, makes the temperature of the hydraulic turbine quickly to drop
Low.Within on display, the temperature of the hydraulic turbine of display is reduced to 100 DEG C, monitoring personnel then can be empty by wireless network control
Cooler is closed.The air cooler of the present invention and the hydraulic turbine position is set and to use be prior art, the present invention is therefore in the application
In be specifically described.
Therefore, hydraulic turbine temperature can be monitored by the substation system of the present invention accurately, and can be incited somebody to action by wireless network
The information detected is transferred to main station system in time, accurately；And the signal processing unit energy in the main station system of the present invention
The signal received is had preferably process, makes station system can improve after the first single-chip microcomputer is analyzed processing and be accurately obtained
Hydraulic turbine temperature value, the temperature information to the hydraulic turbine that monitoring personnel can be monitored by present invention discovery hydraulic turbine temperature quickly
Degree is abnormal, and can position the source of trouble accurately and discharge.The present invention preferably achieves the network to hydraulic turbine temperature
Change monitoring.
Wherein, described signal processing unit as in figure 2 it is shown, it is by processing chip U, audion VT2, resistance R9, resistance
R10, polar capacitor C5, polar capacitor C6, polar capacitor C7, diode D3, signal conditioning circuit, signal wave reception filtering circuit,
And signal level regulation circuit composition.
During connection, the positive pole of polar capacitor C5 is connected with the base stage of audion VT2, negative pole and the CF pipe processing chip U
Foot is connected.The P pole of diode D3 base stage with audion VT2 after resistance R9 is connected, the current collection of N pole and audion VT2
Pole is connected.The negative pole of polar capacitor C6 be connected with the P pole of diode D3 after ground connection, the emitter stage of positive pole and audion VT2
It is connected.The positive pole of polar capacitor C7 emitter stage with audion VT2 after resistance R10 is connected, negative pole with process chip U's
CM pin is connected.Signal wave reception filtering circuit is wirelessly transferred with the IN pin and VS pin and first processing chip U respectively
Module is connected.Signal level regulation circuit is connected with the CM pin processing chip U and VS pin respectively.Signal conditioning circuit
It is serially connected in and processes between the OUT pin of chip U and signal level regulation circuit.
The COM pin of described process chip U is connected with OUT pin and CM pin respectively；The base stage of described audion VT2
Also being connected with the IN pin processing chip U, its emitter stage is then connected with the CC pin processing chip U；Described signal level
Regulation circuit and the first single-chip microcomputer are connected.
During enforcement, the audion VT3 of the present invention, resistance R8, resistance R9, polar capacitor C4, polar capacitor C5, inductance L2 and
Diode D4 then defines electromagnetism interference device, and what the external world can be produced by this electromagnetism interference device does the electromagnetism processing chip U
Disturb signal suppress or weaken, effectively ensure that the process chip U effect to signal processing.Meanwhile, signal processing unit
The input of signal wave reception filtering circuit and the signal output interface of the first wireless transport module be connected, and signal level adjust
The outfan on economize on electricity road is then connected with the first single-chip microcomputer.For the practical effect of the present invention, described process chip U is the most excellent
First have employed the integrated chip of AD736 to realize.
Further, described signal wave reception filtering circuit is by amplifier P1, audion VT1, resistance R1, resistance R2, resistance
R3, resistance R4, resistance R5, resistance R6, resistance R7, resistance R8, polar capacitor C1, polar capacitor C2, polar capacitor C3, polarity electricity
Hold C4, inductance L1, diode D1, and diode D2 composition.
During connection, the positive pole of polar capacitor C2 base stage with audion VT1 after resistance R5 is connected, negative pole and the first nothing
Line transport module is connected.The positive pole of polar capacitor C4 is connected with the negative pole of polar capacitor C2, negative pole after resistance R7 with put
The negative pole of big device P1 is connected.The P pole of diode D2 negative pole with amplifier P1 after resistance R8 is connected, N pole and amplifier
The outfan of P1 is connected.One end of inductance L1 is connected with the P pole of diode D2, the outfan phase of the other end and amplifier P1
Connect.
Meanwhile, the P pole of diode D1 is connected with the positive pole of amplifier P1, N pole after resistance R3 with the collection of audion VT1
Electrode is connected.The positive pole of polar capacitor C1 P pole with diode D1 after resistance R1 is connected, negative pole after resistance R2 with three
The colelctor electrode of pole pipe VT1 is connected.The positive pole of polar capacitor C3 colelctor electrode with audion VT1 after resistance R4 is connected, negative
Pole outfan with amplifier P1 after resistance R6 is connected.
The emitter stage of described audion VT1 is connected with the outfan of amplifier P1；The minus earth of described amplifier P1,
Its positive pole also positive pole with polar capacitor C2 is connected, and its outfan is also connected with the IN pin processing chip U；Described polarity
The minus earth of electric capacity C1；The negative pole of described polar capacitor C3 is also connected with the VS pin processing chip U.
During operation, this anti-frequency mixes the electric capacity C2 in filter circuit and resistance R5 and then constitutes a low pass filter, this filtering
Device can with filtering electric signal High-frequency Interference；Audion VT1, polar capacitor C1, diode D1 and resistance R3 form another
Low pass filter, this low pass filter is possible to prevent previous low pass filter to filter High-frequency Interference and not thoroughly makes telecommunications
Number by High-frequency Interference.Meanwhile, this anti-frequency mixes the amplifier P1 in filter circuit, electric capacity C4, inductance L1 and diode D2 then
Forming amplifier, this amplifier then low current signal or charge signal to the signal after filtered process is amplified, and makes
Signal is more stable.
Further, described signal level regulation electricity routing amplifier P2, field effect transistor MOS, audion VT3, three poles
Pipe VT4, resistance R11, resistance R12, resistance R13, resistance R14, adjustable resistance R15, resistance R16, adjustable resistance R17, resistance
R18, resistance R19, polar capacitor C8, polar capacitor C9, polar capacitor C10, inductance L2, diode D4, diode D5, and two
Pole pipe D6 forms.
During connection, one end of resistance R11 is connected with the colelctor electrode of audion VT3, other end ground connection.The P of diode D4
Pole is connected with the emitter stage of audion VT3, and N pole colelctor electrode with audion VT4 after adjustable resistance R15 is connected.Polarity
The positive pole of electric capacity C8 negative pole with amplifier P2 after resistance R13 is connected, negative pole after resistance R14 with the output of amplifier P2
End is connected.The P pole of diode D5 be connected with the negative pole of amplifier P2 after ground connection, N pole after resistance R12 with polar capacitor C8
Negative pole be connected.
Meanwhile, the positive pole of polar capacitor C9 is connected with the drain electrode of field effect transistor MOS, negative pole and the transmitting of audion VT3
Pole is connected.One end of resistance R16 is connected with the colelctor electrode of audion VT4, and the other end is connected with the outfan of amplifier P4
Connect.The positive pole of polar capacitor C10 base stage with audion VT4 after resistance R18 is connected, the outfan of negative pole and amplifier P2
It is connected.The P pole of diode D6 is connected with the base stage of audion VT4, N pole after resistance R19 with the negative pole of polar capacitor C10
It is connected.One end of inductance L2 is connected with the VS pin processing chip U, and the other end is connected with the source electrode of field effect transistor MOS.
One end of adjustable resistance R17 is connected with the grid of field effect transistor MOS, and the other end is connected with the base stage of audion VT4.
The emitter stage of described audion VT3 also negative pole with polar capacitor C9 is connected, its base stage then with process chip U's
CM pin is connected；The N pole of described diode D4 also negative pole with amplifier P2 is connected；The emitter stage of described audion VT4
It is connected with the positive pole of amplifier P2；Outfan and first single-chip microcomputer of described amplifier P2 are connected.
During operation, this signal level regulation the audion VT3 of circuit, diode D4, polar capacitor C9, polar capacitor C13,
Resistance R16 and adjustable resistance R15 defines high resistance circuit, and this high resistance circuit can be effectively by the strong electromagnetic electricity in the signal of telecommunication
Ripple eliminates or suppresses；Amplifier P2, polar capacitor C8, polar capacitor C10, resistance R14 and adjustable resistance R17 are formed simultaneously
Actuator, the dutycycle of the fixing square wave of signal frequency can be adjusted, can effectively reduce the signal of telecommunication by this actuator
In null offset, make the ordinary telegram of the signal of telecommunication keep consistent, even if digital electric signal is more stable, this electromagnetic interference suppression circuit
Can effectively make the state that signal of telecommunication holding is stable, thus improve the signal processing unit effect to signal processing, can be effective
The raising present invention accuracy to hydraulic turbine monitoring temperature.
As it is shown on figure 3, described signal conditioning circuit is by amplifier P3, amplifier P4, audion VT5, audion VT6, electricity
Resistance R20, resistance R21, resistance R22, resistance R23, resistance R24, resistance R25, resistance R26, resistance R27, polar capacitor C11, pole
Property electric capacity C12, polar capacitor C13, polar capacitor C14, polar capacitor C15, inductance L3, diode D7, and diode D8 group
Become.
During connection, the positive pole of polar capacitor C11 positive pole with amplifier P3 after inductance L3 is connected, negative pole with process core
The OUT pin of sheet U is connected.The P pole of diode D7 positive pole with polar capacitor C11 after resistance R20 is connected, N pole and three
The colelctor electrode of pole pipe VT5 is connected.The positive pole of polar capacitor C14 colelctor electrode with audion VT5 after resistance R25 is connected,
Negative pole is connected with the colelctor electrode of audion VT6.
Wherein, one end of resistance R26 is connected with the positive pole of polar capacitor C14, the base stage phase of the other end and audion VT5
Connect.The positive pole of polar capacitor C12 outfan with amplifier P3 after resistance R21 is connected, negative pole after resistance R24 with put
The positive pole of big device P4 is connected.The P pole of diode D8 negative pole with amplifier P3 after resistance R22 is connected, and N pole is sequentially through electricity
It is connected with the outfan of amplifier P4 after resistance R23 and resistance R27.
Meanwhile, the negative pole of polar capacitor C13 is connected with the P pole of diode D8, and positive pole is connected with the negative pole of amplifier P3
Connect rear ground connection.The positive pole of polar capacitor C15 is connected with the emitter stage of audion VT6, and negative pole is connected with the negative pole of amplifier P4
Connect rear ground connection.The grounded emitter of described audion VT5；The positive pole of described amplifier P4 also base stage with audion VT6 is connected
Connecing, its outfan is also connected with signal level regulation circuit.
During operation, the present invention is in order to be adjusted the digital signal processing chip U output, then at the OUT processing chip U
It is provided with signal conditioning circuit between pin and signal level regulation circuit.The audion VT5 of this signal conditioning circuit, polarity electricity
Hold C14, resistance R26 and diode D7 and constitute a biasing circuit, amplifier P3, polar capacitor C11, polar capacitor C13, inductance
L3, and resistance R21 one pre-amplification circuit of composition, this biasing circuit and pre-amplification circuit combine can be distortionless
Digital signal is amplified.Polar capacitor C12 therein is capacitance, and polar capacitor C13 can amplify electricity to preposition
The bandwidth on road limits, to filter the High-frequency Interference in digital signal and spike burr.Meanwhile, amplifier P4, audion
VT6, polar capacitor C15 constitute a harmonic device, and this harmonic device can the further High-frequency Interference in convection current speed digital signal
Filtering, digital signal can be nursed one's health by this signal conditioning circuit, makes digital signal more stable, thus this signal condition electricity
Road can improve the signal processing unit effect to signal processing.
According to above-described embodiment, can well realize the present invention.
Claims (5)
1. a hydraulic turbine temperature signal regulation type monitoring system based on network technology, it is characterised in that main by system of main website
System, with the substation system composition being connected with main station system by wireless network；Described main station system by the first single-chip microcomputer, all with
Data storage, display, data processor and the signal processing unit that first single-chip microcomputer is connected, and with signal processing list
The first wireless transport module composition that unit is connected；Described substation system, by second singlechip, is connected with second singlechip respectively
The second wireless transport module connect and air cooler, and the temperature cruise being all connected with second singlechip by RS-485 bus
Instrument A, temperature cruise instrument B and temperature cruise instrument C composition；Described first wireless transport module and the second wireless transport module pass through nothing
Gauze network is connected；Described first single-chip microcomputer is also connected with the first wireless transport module；Described signal processing unit is by processing
Chip U, audion VT2, the pole that positive pole is connected with the base stage of audion VT2, negative pole is connected with the CF pin of process chip U
Property electric capacity C5, P pole base stage with audion VT2 after resistance R9 is connected, N pole is connected with the colelctor electrode of audion VT2
Diode D3, negative pole be connected with the P pole of diode D3 after the polarity that is connected with the emitter stage of audion VT2 of ground connection, positive pole
Electric capacity C6, positive pole emitter stage with audion VT2 after resistance R10 is connected, negative pole is connected with the CM pin of process chip U
Polar capacitor C7, respectively with the signal processing the IN pin of chip U and VS pin and the first wireless transport module is connected
Wave reception filtering circuit, the signal level regulation circuit being connected with the CM pin processing chip U and VS pin respectively, and concatenation
At the signal conditioning circuit composition processed between the OUT pin of chip U and signal level regulation circuit；Described process chip U's
COM pin is connected with OUT pin and CM pin respectively；The base stage of described audion VT2 also with process chip U IN pin phase
Connect, its emitter stage is then connected with the CC pin processing chip U；Described signal level regulation circuit and the first single-chip microcomputer are connected
Connect.
A kind of hydraulic turbine temperature signal regulation type monitoring system based on network technology the most according to claim 1, it is special
Levying and be, described signal conditioning circuit is by amplifier P3, amplifier P4, audion VT5, audion VT6, and positive pole is after inductance L3
Be connected with the positive pole of amplifier P3, polar capacitor C11, P pole that negative pole is connected with the OUT pin of process chip U is through resistance
The diode D7 that after R20, the positive pole with polar capacitor C11 is connected, N pole is connected with the colelctor electrode of audion VT5, positive pole warp
The polar capacitor that after resistance R25, the colelctor electrode with audion VT5 is connected, negative pole is connected with the colelctor electrode of audion VT6
C14, the resistance R26 that one end is connected with the positive pole of polar capacitor C14, the other end is connected with the base stage of audion VT5, positive pole
The pole that outfan with amplifier P3 is connected after resistance R21, negative pole positive pole with amplifier P4 after resistance R24 is connected
Property electric capacity C12, P pole negative pole with amplifier P3 after resistance R22 be connected, N pole sequentially after resistance R23 and resistance R27 with
The diode D8 that the outfan of amplifier P4 is connected, negative pole is connected with the P pole of diode D8, positive pole is negative with amplifier P3's
Pole be connected after the polar capacitor C13 of ground connection, and positive pole is connected with the emitter stage of audion VT6, negative pole and amplifier P4
Negative pole be connected after ground connection polar capacitor C15 composition；The grounded emitter of described audion VT5；Described amplifier P4's
Positive pole also base stage with audion VT6 is connected, its outfan is also connected with signal level regulation circuit.
A kind of hydraulic turbine temperature signal regulation type monitoring system based on network technology the most according to claim 2, it is special
Levy and be, described signal wave reception filtering circuit by amplifier P1, audion VT1, positive pole after resistance R5 with the base of audion VT1
The polar capacitor C2 that pole is connected, negative pole and the first wireless transport module are connected, positive pole is connected with the negative pole of polar capacitor C2
Connect, polar capacitor C4, P pole that negative pole negative pole with amplifier P1 after resistance R7 is connected after resistance R8 with amplifier P1's
The diode D2 that negative pole is connected, N pole is connected with the outfan of amplifier P1, one end is connected, separately with the P pole of diode D2
Inductance L1, the P pole that one end is connected with the outfan of amplifier P1 is connected with the positive pole of amplifier P1, N pole is after resistance R3
The diode D1 being connected with the colelctor electrode of audion VT1, positive pole P pole with diode D1 after resistance R1 is connected, negative pole
The polar capacitor C1 that colelctor electrode with audion VT1 is connected after resistance R2, and positive pole after resistance R4 with audion VT1
The polar capacitor C3 composition that colelctor electrode is connected, negative pole outfan with amplifier P1 after resistance R6 is connected；Described three
The emitter stage of pole pipe VT1 is connected with the outfan of amplifier P1；The minus earth of described amplifier P1, its positive pole also with polarity
The positive pole of electric capacity C2 is connected, its outfan is also connected with the IN pin processing chip U；The negative pole of described polar capacitor C1 connects
Ground；The negative pole of described polar capacitor C3 is also connected with the VS pin processing chip U.
A kind of hydraulic turbine temperature signal regulation type monitoring system based on network technology the most according to claim 3, it is special
Levy and be, described signal level regulation electricity routing amplifier P2, field effect transistor MOS, audion VT3, audion VT4, one end with
The colelctor electrode of audion VT3 is connected, resistance R11, the P pole of other end ground connection is connected with the emitter stage of audion VT3, N pole
The diode D4 that colelctor electrode with audion VT4 is connected after adjustable resistance R15, positive pole after resistance R13 with amplifier P2
Polar capacitor C8, the P pole that negative pole is connected, negative pole outfan with amplifier P2 after resistance R14 is connected and amplifier
The negative pole of P2 be connected after the diode D5 that is connected of ground connection, N pole negative pole with polar capacitor C8 after resistance R12, positive pole with
The polar capacitor C9 that the drain electrode of field effect transistor MOS is connected, negative pole is connected with the emitter stage of audion VT3, one end and three poles
The resistance R16 that the colelctor electrode of pipe VT4 is connected, the other end is connected with the outfan of amplifier P4, positive pole after resistance R18 with
The base stage of audion VT4 is connected, negative pole is connected with the outfan of amplifier P2 polar capacitor C10, P pole and audion
The diode D6 that the base stage of VT4 is connected, N pole negative pole with polar capacitor C10 after resistance R19 is connected, one end and process
The inductance L2 that the VS pin of chip U is connected, the other end is connected with the source electrode of field effect transistor MOS, and one end and field effect
The adjustable resistance R17 composition that the grid of pipe MOS is connected, the other end is connected with the base stage of audion VT4；Described audion
The emitter stage of VT3 also negative pole with polar capacitor C9 is connected, its base stage is then connected with the CM pin processing chip U；Described
The N pole of diode D4 also negative pole with amplifier P2 is connected；The emitter stage of described audion VT4 and the positive pole phase of amplifier P2
Connect；Outfan and first single-chip microcomputer of described amplifier P2 are connected.
A kind of hydraulic turbine temperature signal regulation type monitoring system based on network technology the most according to claim 4, it is special
Levying and be, described process chip U is the integrated chip of AD736.
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