CN106125703A - A kind of hydraulic turbine temperature signal based on network technology sampling maintenance monitoring system - Google Patents
A kind of hydraulic turbine temperature signal based on network technology sampling maintenance monitoring system Download PDFInfo
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- CN106125703A CN106125703A CN201610738776.2A CN201610738776A CN106125703A CN 106125703 A CN106125703 A CN 106125703A CN 201610738776 A CN201610738776 A CN 201610738776A CN 106125703 A CN106125703 A CN 106125703A
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 34
- 238000005070 sampling Methods 0.000 title claims abstract description 23
- 238000005516 engineering process Methods 0.000 title claims abstract description 13
- 238000012423 maintenance Methods 0.000 title claims abstract description 11
- 238000012545 processing Methods 0.000 claims abstract description 50
- 238000013500 data storage Methods 0.000 claims abstract description 6
- 239000003990 capacitor Substances 0.000 claims description 89
- 230000005669 field effect Effects 0.000 claims description 45
- 238000000034 method Methods 0.000 claims description 22
- 101100461812 Arabidopsis thaliana NUP96 gene Proteins 0.000 claims description 18
- 102100030393 G-patch domain and KOW motifs-containing protein Human genes 0.000 claims description 18
- 229910052982 molybdenum disulfide Inorganic materials 0.000 claims description 18
- 238000001914 filtration Methods 0.000 claims description 14
- 101150090280 MOS1 gene Proteins 0.000 claims description 12
- 101100401568 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) MIC10 gene Proteins 0.000 claims description 12
- 230000033228 biological regulation Effects 0.000 claims description 11
- 230000005611 electricity Effects 0.000 claims description 9
- 101001074567 Chamaecyparis formosensis Alpha pinene synthase, chloroplastic Proteins 0.000 claims description 2
- 230000003321 amplification Effects 0.000 claims description 2
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
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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
- G05B19/418—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM]
- G05B19/4185—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM] characterised by the network communication
- G05B19/41855—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM] characterised by the network communication by local area network [LAN], network structure
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/18—Self-organising networks, e.g. ad-hoc networks or sensor networks
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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- Automation & Control Theory (AREA)
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Abstract
The invention discloses a kind of hydraulic turbine temperature signal based on network technology sampling maintenance monitoring system, 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 sampling maintenance 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 sampling maintenance 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 sampling maintenance monitoring system, mainly by main station system, with the substation system being connected with main station system by wireless network
Composition；Described main station system is by the first single-chip microcomputer, at the data storage being all connected with the first single-chip microcomputer, display, data
Reason device and signal processing unit, and the first wireless transport module composition being connected with signal processing unit；Described substation system
System is by second singlechip, the second wireless transport module being connected with second singlechip respectively and air cooler, and all passes through RS-
Temperature cruise instrument A, temperature cruise instrument B and temperature cruise instrument C that 485 buses are connected with second singlechip form；Described first
Wireless transport module and the second wireless transport module are connected by wireless network；Described first single-chip microcomputer also with the first wireless biography
Defeated module 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,
The polar capacitor C7 that negative pole is connected with the CM pin processing chip U, respectively with VS pin and the first wireless biography processing chip U
The signal wave reception filtering circuit that defeated module is connected, is serially connected between signal wave reception filtering circuit and the IN pin processing chip U
Sampling hold circuit, and respectively with the signal level processing the OUT pin of chip U and CM pin and VS pin is connected
Regulation circuit composition；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 sampling hold circuit by amplifier P3, field effect transistor MOS2, field effect transistor MOS3, just
Pole after resistance R21 with amplify 3 the polar capacitor C11 that positive pole is connected, negative pole is connected with signal wave reception filtering circuit, bear
The polarity of ground connection after pole outfan with amplifier P3 after resistance R23 is connected, positive pole is connected with the negative pole of amplifier P3
Electric capacity C13, P pole is connected with the outfan of amplifier P3, N pole after adjustable resistance R24 with the grid phase of field effect transistor MOS3
The diode D8 connected, positive pole grid with field effect transistor MOS2 after resistance R25 is connected, the polar capacitor of minus earth
C14, N pole is sequentially connected through resistance R20 outfan with amplifier P3 after resistance R22, the positive pole phase of P pole and amplifier P3
The diode D7 connected, positive pole is connected with the junction point of resistance R20 with resistance R22, the polar capacitor C12 of minus earth, with
And the inductance L3 composition that one end is connected with the positive pole of polar capacitor C12, the other end is connected with the drain electrode of field effect transistor MOS2；
The outfan of described amplifier P3 is also connected with the drain electrode of field effect transistor MOS3；The grid of described field effect transistor MOS2 also with field
The source electrode of effect pipe MOS3 is connected；The source electrode of described field effect transistor MOS2 is connected with the IN pin processing chip U；Described two
The N pole ground connection of pole pipe D8.
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
The positive pole of property electric capacity C2 is connected, its outfan also negative pole with polar capacitor C11 is 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 MOS1, audion VT3, audion VT4, one end
Be connected with the colelctor electrode of audion VT3, resistance R11, the P pole of other end ground connection is connected with the emitter stage of audion VT3, N
The diode D4 that pole colelctor electrode with audion VT4 after adjustable resistance R15 is connected, positive pole after resistance R13 with amplifier
The negative pole of P2 is connected, negative pole outfan with amplifier P2 after resistance R14 is connected polar capacitor C8, P pole and amplification
The negative pole of device 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
Be connected with the drain electrode of field effect transistor MOS1, polar capacitor C9 that negative pole is connected with the emitter stage of audion VT3, one end and three
The resistance R16 that the colelctor electrode of pole pipe VT4 is connected, the other end is connected with the OUT pin of process chip U, positive pole is through resistance R18
Polar capacitor C10, the P pole that base stage with audion VT4 is connected afterwards, negative pole is connected with the outfan of amplifier P2 and three poles
The diode D6 that the base stage of pipe VT4 is connected, N pole negative pole with polar capacitor C10 after resistance R19 is connected, one end and place
Manage the inductance L2 that VS pin is connected, the other end is connected with the source electrode of field effect transistor MOS1 of chip U, and one end is imitated with field
Should pipe MOS1 the adjustable resistance R17 that grid is connected, the other end is connected with the base stage of audion VT4 composition；Described three poles
The emitter stage of pipe VT3 also negative pole with polar capacitor C9 is connected, its base stage is then connected with the CM pin processing chip U；Institute
State the N pole of the diode D4 negative pole also with amplifier P2 to be connected；The emitter stage of described audion VT4 and the positive pole of amplifier P2
It is connected；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) level value of input signal can be adjusted or keep by the present invention, makes signal keep being basically unchanged, can have
The precision of the guarantee sampled signal conversion of effect, thus improve the present invention accuracy to hydraulic turbine monitoring temperature.
(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 sampling hold 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, sampling hold 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 connected with the VS pin processing chip U and the first wireless transport module respectively.
Sampling hold circuit is serially connected between signal wave reception filtering circuit and the IN pin processing chip U.Signal level regulation circuit divides
Not it is not connected with the OUT pin of process chip U and CM pin and VS pin.
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 also negative pole with polar capacitor C11 is connected；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 MOS1, 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 MOS1, 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, the other end and the OUT pin phase processing chip U
Connect.The positive pole of polar capacitor C10 base stage with audion VT4 after resistance R18 is connected, the output of negative pole and amplifier P2
End is connected.The P pole of diode D6 is connected with the base stage of audion VT4, N pole negative with polar capacitor C10 after resistance R19
Pole 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 MOS1
Connect.One end of adjustable resistance R17 is connected with the grid of field effect transistor MOS1, 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 sampling hold circuit is by amplifier P3, field effect transistor MOS2, field effect transistor MOS3, resistance
R20, resistance R21, resistance R22, resistance R23, adjustable resistance R24, resistance R25, polar capacitor C11, polar capacitor C12, polarity
Electric capacity C13, polar capacitor C14, diode D7, diode D8, and inductance L3 form.
During connection, the positive pole of polar capacitor C11 is connected with the positive pole amplifying 3 after resistance R21, and negative pole receives with signal
Filter circuit is connected.The negative pole of polar capacitor C13 outfan with amplifier P3 after resistance R23 is connected, positive pole with put
Ground connection after the negative pole of device P3 is connected greatly.The P pole of diode D8 is connected with the outfan of amplifier P3, and N pole is through adjustable resistance
After R24, the grid with field effect transistor MOS3 is connected.
Meanwhile, the positive pole of polar capacitor C14 grid with field effect transistor MOS2 after resistance R25 is connected, minus earth.
The N pole of diode D7 is sequentially connected through resistance R20 outfan with amplifier P3 after resistance R22, and P pole is with amplifier P3's
Positive pole is connected.The positive pole of polar capacitor C12 is connected with the junction point of resistance R20 with resistance R22, minus earth.Inductance L3
One end be connected with the positive pole of polar capacitor C12, the other end is connected with the drain electrode of field effect transistor MOS2.
The outfan of described amplifier P3 is also connected with the drain electrode of field effect transistor MOS3；The grid of described field effect transistor MOS2
Pole is also connected with the source electrode of field effect transistor MOS3；The source electrode of described field effect transistor MOS2 is connected with the IN pin processing chip U
Connect；The N pole ground connection of described diode D8.
During operation, field effect transistor MOS2 of this sampling hold circuit and field effect transistor MOS3 are after resistance R25 carries out current limliting
There is provided buffer current to polar capacitor C14, and this polar capacitor C14 is as sampling and capacitor.In sampling period, field effect transistor
MOS3 turns on, and now, polar capacitor C12 and polar capacitor C14 is by the source electrode of field effect transistor MOS3 and drain electrode conducting；Keeping
Period, field effect transistor MOS3 disconnects, and now, the drain electrode of field effect transistor MOS3 and field effect transistor MOS2 is then as unique electric discharge
End, the level value of input signal then can be adjusted or keep by the resistance changing adjustable resistance R24, and field effect transistor MOS3 is simultaneously
There is the effect of buffering, in order to sampled signal is fed back to amplifier P3, amplifier P3 and is then amplified signal processing, finally
Exported by the source electrode of field effect transistor MOS2.Thus this sampling hold circuit can be processed before chip U changes it in input signal,
Make signal keep being basically unchanged, can effectively ensure the precision that sampled signal is changed.
According to above-described embodiment, can well realize the present invention.
Claims (5)
1. hydraulic turbine temperature signal based on a network technology sampling maintenance monitoring system, it is characterised in that main by leading
Stand 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,
Data storage, display, data processor and the signal processing unit being all connected with the first single-chip microcomputer, and with signal at
The first wireless transport module composition that reason unit is connected；Described substation system is by second singlechip, respectively with second singlechip
The second wireless transport module being connected and air cooler, and the temperature being all connected with second singlechip by RS-485 bus
Cruise instrument A, temperature cruise instrument B and temperature cruise instrument C composition；Described first wireless transport module and the second wireless transport module lead to
Cross wireless network to be connected；Described first single-chip microcomputer is also connected with the first wireless transport module；Described signal processing unit by
Processing chip U, audion VT2, positive pole is connected with the base stage of audion VT2, negative pole is connected with the CF pin of process chip U
Polar capacitor C5, P pole base stage with audion VT2 after resistance R9 be connected, N pole is connected with the colelctor electrode of audion VT2
The diode D3 connect, after negative pole is connected with the P pole of diode D3, ground connection, positive pole are connected with the emitter stage of audion VT2
Polar capacitor C6, positive pole emitter stage with audion VT2 after resistance R10 is connected, the CM pin phase of negative pole and process chip U
The polar capacitor C7 connected, the signal being connected with the VS pin processing chip U and the first wireless transport module respectively receives filter
Wave circuit, be serially connected in signal wave reception filtering circuit and process chip U IN pin between sampling hold circuit, and respectively with
Process the signal level regulation circuit composition that the OUT pin of chip U is connected with CM pin and VS pin；Described process chip
The COM pin of U is connected with OUT pin and CM pin respectively；The base stage of described audion VT2 is also managed with the IN processing chip U
Foot is connected, its emitter stage is then connected with the CC pin processing chip U；Described signal level regulation circuit and the first single-chip microcomputer
It is connected.
A kind of hydraulic turbine temperature signal based on network technology the most according to claim 1 sampling maintenance monitoring system,
It is characterized in that, described sampling hold circuit is by amplifier P3, field effect transistor MOS2, field effect transistor MOS3, and positive pole is through electricity
With the polar capacitor C11 that positive pole is connected, negative pole is connected with signal wave reception filtering circuit amplifying 3 after resistance R21, negative pole is through electricity
Be connected with the outfan of amplifier P3 after resistance R23, positive pole be connected with the negative pole of amplifier P3 after the polar capacitor of ground connection
C13, P pole is connected with the outfan of amplifier P3, N pole grid with field effect transistor MOS3 after adjustable resistance R24 is connected
Diode D8, positive pole grid with field effect transistor MOS2 after resistance R25 is connected, the polar capacitor C14, N of minus earth
Pole is sequentially connected through resistance R20 outfan with amplifier P3 after resistance R22, P pole is connected with the positive pole of amplifier P3
Diode D7, positive pole is connected with the junction point of resistance R20 with resistance R22, the polar capacitor C12, Yi Jiyi of minus earth
The inductance L3 composition that end is connected with the positive pole of polar capacitor C12, the other end is connected with the drain electrode of field effect transistor MOS2；Described
The outfan of amplifier P3 is also connected with the drain electrode of field effect transistor MOS3；The grid of described field effect transistor MOS2 also with field effect
The source electrode of pipe MOS3 is connected；The source electrode of described field effect transistor MOS2 is connected with the IN pin processing chip U；Described diode
The N pole ground connection of D8.
A kind of hydraulic turbine temperature signal based on network technology the most according to claim 2 sampling maintenance monitoring system,
It is characterized in that, described signal wave reception filtering circuit by amplifier P1, audion VT1, positive pole after resistance R5 with audion VT1
The polar capacitor C2 that base stage is connected, negative pole and the first wireless transport module are connected, the negative pole of positive pole and polar capacitor C2
Be connected, polar capacitor C4, P pole that negative pole negative pole with amplifier P1 after resistance R7 is connected after resistance R8 with amplifier
The diode D2 that the negative pole of P1 is connected, N pole is connected with the outfan of amplifier P1, one end is extremely connected with the P of diode D2
Connect, inductance L1, 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
The diode D1 that after R3, colelctor electrode with audion VT1 is connected, positive pole P pole with diode D1 after resistance R1 is connected,
The polar capacitor C1 that negative pole colelctor electrode with audion VT1 after resistance R2 is connected, and positive pole after resistance R4 with three poles
The polar capacitor C3 composition that the colelctor electrode of pipe VT1 is connected, negative pole outfan with amplifier P1 after resistance R6 is connected；Institute
The outfan of the emitter stage and amplifier P1 of stating audion VT1 is connected；The minus earth of described amplifier P1, its positive pole also with
The positive pole of polar capacitor C2 is connected, its outfan also negative pole with polar capacitor C11 is connected；Described polar capacitor C1's is negative
Pole ground connection；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 based on network technology the most according to claim 3 sampling maintenance monitoring system,
It is characterized in that, described signal level regulation electricity routing amplifier P2, field effect transistor MOS1, audion VT3, audion VT4, one
End is connected with the colelctor electrode of audion VT3, resistance R11, the P pole of other end ground connection is connected with the emitter stage of audion VT3,
The diode D4 that N pole colelctor electrode with audion VT4 after adjustable resistance R15 is connected, positive pole after resistance R13 with amplifier
The negative pole of P2 is connected, negative pole outfan with amplifier P2 after resistance R14 is connected polar capacitor C8, P pole and amplification
The negative pole of device 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
Be connected with the drain electrode of field effect transistor MOS1, polar capacitor C9 that negative pole is connected with the emitter stage of audion VT3, one end and three
The resistance R16 that the colelctor electrode of pole pipe VT4 is connected, the other end is connected with the OUT pin of process chip U, positive pole is through resistance R18
Polar capacitor C10, the P pole that base stage with audion VT4 is connected afterwards, negative pole is connected with the outfan of amplifier P2 and three poles
The diode D6 that the base stage of pipe VT4 is connected, N pole negative pole with polar capacitor C10 after resistance R19 is connected, one end and place
Manage the inductance L2 that VS pin is connected, the other end is connected with the source electrode of field effect transistor MOS1 of chip U, and one end is imitated with field
Should pipe MOS1 the adjustable resistance R17 that grid is connected, the other end is connected with the base stage of audion VT4 composition；Described three poles
The emitter stage of pipe VT3 also negative pole with polar capacitor C9 is connected, its base stage is then connected with the CM pin processing chip U；Institute
State the N pole of the diode D4 negative pole also with amplifier P2 to be connected；The emitter stage of described audion VT4 and the positive pole of amplifier P2
It is connected；Outfan and first single-chip microcomputer of described amplifier P2 are connected.
A kind of hydraulic turbine temperature signal based on network technology the most according to claim 4 sampling maintenance monitoring system,
It is characterized in that, described process chip U is the integrated chip of AD736.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104912728A (en) * | 2015-05-27 | 2015-09-16 | 安徽瀚洋节能科技有限公司 | Remote monitoring system of water turbine for cooling tower |
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| CN105673314A (en) * | 2016-02-29 | 2016-06-15 | 福建省智能科技有限公司 | Medium and small water-turbine generator set DSPIC comprehensive controller |
| CN105807809A (en) * | 2016-05-24 | 2016-07-27 | 成都尼奥尔电子科技有限公司 | Signal-filtering greenhouse temperature monitoring system based on internet of things |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104912728A (en) * | 2015-05-27 | 2015-09-16 | 安徽瀚洋节能科技有限公司 | Remote monitoring system of water turbine for cooling tower |
| CN105114233A (en) * | 2015-08-14 | 2015-12-02 | 刘洋 | Hydroelectric power generator temperature control system used for hydroelectric power generation |
| CN105203163A (en) * | 2015-10-28 | 2015-12-30 | 成都三匠科技有限公司 | Temperature and humidity data monitoring system based on Internet of Things |
| CN105673314A (en) * | 2016-02-29 | 2016-06-15 | 福建省智能科技有限公司 | Medium and small water-turbine generator set DSPIC comprehensive controller |
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Application publication date: 20161116 |