CN107748238A - A kind of hydraulic engineering monitor terminal based on multi-sensor technology - Google Patents
A kind of hydraulic engineering monitor terminal based on multi-sensor technology Download PDFInfo
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- CN107748238A CN107748238A CN201710960651.9A CN201710960651A CN107748238A CN 107748238 A CN107748238 A CN 107748238A CN 201710960651 A CN201710960651 A CN 201710960651A CN 107748238 A CN107748238 A CN 107748238A
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- 238000005516 engineering process Methods 0.000 title claims abstract description 22
- 238000001514 detection method Methods 0.000 claims abstract description 63
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- 230000003750 conditioning effect Effects 0.000 claims abstract description 14
- 238000003860 storage Methods 0.000 claims description 17
- 239000007788 liquid Substances 0.000 claims description 12
- 238000006243 chemical reaction Methods 0.000 claims description 7
- 230000000087 stabilizing effect Effects 0.000 claims description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 4
- 239000007853 buffer solution Substances 0.000 claims description 4
- 230000005465 channeling Effects 0.000 claims description 4
- 239000012530 fluid Substances 0.000 claims description 4
- 230000015654 memory Effects 0.000 claims description 4
- 229910052760 oxygen Inorganic materials 0.000 claims description 4
- 239000001301 oxygen Substances 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims description 3
- 239000003990 capacitor Substances 0.000 claims description 2
- 230000008859 change Effects 0.000 claims description 2
- 239000003381 stabilizer Substances 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims description 2
- 238000012544 monitoring process Methods 0.000 abstract description 35
- 230000005540 biological transmission Effects 0.000 abstract description 9
- 238000003908 quality control method Methods 0.000 abstract description 2
- 238000011161 development Methods 0.000 description 10
- 238000012545 processing Methods 0.000 description 9
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- 229910001385 heavy metal Inorganic materials 0.000 description 5
- 238000012795 verification Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 3
- 230000003321 amplification Effects 0.000 description 2
- 230000002457 bidirectional effect Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
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- 238000007906 compression Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000005518 electrochemistry Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000002798 spectrophotometry method Methods 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
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Abstract
The invention discloses a kind of hydraulic engineering monitor terminal based on multi-sensor technology,Including monitor terminal and detection main frame,The monitor terminal is connected by GPRS module with detection main frame,The collection signal of the detection host receiving data collector,The data terminal of the data acquisition unit is connected by control line with detection cell,The monitor terminal is internally provided with embedded controller,The data terminal of the embedded controller is connected with data collecting card,Pass through camera collection site image,Then network transmission to monitoring rear end is passed through,Internet network is linked to by wireless network access node,The wireless-transmission network that video data on video server forms monitoring system can be accessed by Internet by so monitoring rear end,And the feedback signal of sensor group is received using sensor signal conditioning circuit,Water quality condition is detected by controller in time,Realize that water quality controls hydraulic engineering trouble-free operation with monitoring the mode being combined.
Description
Technical field
The present invention relates to hydraulic engineering monitor terminal technical field, specially a kind of water conservancy work based on multi-sensor technology
Range monitoring terminal.
Background technology
Water is the important substance that it is essential that the mankind depend on for existence, getting worse the problem of today's society water resources shortage,
And the pollution of water resource is one of the main reason for causing water resources shortage, therefore the protection of water resource has become countries in the world
Common concern and the Globalization problem of pay attention to day by day.Modern water quality monitoring technology is water resource environment protection and the skill administered
Art supports.Multi-parameter water quality detector based on modern water quality monitoring technology is the important development side of nowadays water quality detection instrument
Develop to, this quasi-instrument forward direction multi-parameter, online, long-range, network monitoring direction, at the same instrument have miniaturization, it is multi-functional,
The feature such as integrated.Current multi-parameter water quality detector principle prototype, realizes seven including total phenol, surfactant
The real-time detection of individual water quality parameter, the instrument have the advantages that microminiature, low-power consumption, multi-parameter, real-time.But at present
Instrument still suffers from some problems and limits its practical development, such as repeated not high, the stirring and washing system of stream sample introduction precision
Efficiency of uniting is low, it is unstable and easy to lack Autonomous test/self-diagnostic function, TT＆C system hardware circuit design redundancy, data transfer
The problems such as deadlock；
（1）Current water quality monitoring using artificial collection be it is more, but wireless sensor network (WSNs) with its wide coverage, from
Group network capabilities is strong, real-time is good, is provided using the digitlization, automation, intellectuality the features such as portable for water body detection
The problem of certain also be present in advantage, current water quality detection and monitor terminal, although it is real-time, but by signal
Coverage limitation and receive and send messages and need to charge, cost is higher, complex operation；
（2）The water project monitoring device of main flow is using 8 single-chip microcomputers as master control in the market, and it is by a nothing
The application program of limit circulation is monitored to whole equipment, by calling corresponding function to complete corresponding behaviour in program execution
Make.Therefore this program administers the distribution, management and the scheduling of task of whole system soft and hardware resource, is a system pipes
Scheduler program is managed, it is completed the task particularly severe to requirement of real-time by interrupting, and interrupt routine just exits after completing
Interrupt, continue cycling through.In the application of reality, the real-time of this mode is very poor, while their interrupt class is less, for being permitted
Multiple interrupt can only be considered same rank in itself, and when interrupting and being handled for one, the interruption of same level can not be carried out to it
Interrupt, thus processing can not possibly be instantly obtained to the high task of requirement of real-time.Further, since program is the knot of Infinite Cyclic
Structure, once there is handling for a task collapse in this loop body, it will cause whole system to be collapsed, so as to which one can be triggered
A little unpredictable results, ultimately cause serious loss.
The content of the invention
In order to overcome the shortcomings of prior art, the present invention provides a kind of hydraulic engineering prison based on multi-sensor technology
Control terminal, by camera collection site image, wireless network access node is then passed through to monitoring rear end by network transmission
Internet network is linked to, video data composition prison on video server can be accessed by Internet by so monitoring rear end
The wireless-transmission network of control system, and using the feedback signal of sensor signal conditioning circuit reception sensor group, pass through control
Device processed detects water quality condition in time, realizes that water quality controls hydraulic engineering trouble-free operation with monitoring the mode being combined, can be effective
Solves the problems, such as background technology proposition.
The technical solution adopted for the present invention to solve the technical problems is：A kind of hydraulic engineering based on multi-sensor technology
Monitor terminal, including monitor terminal and detection main frame, the monitor terminal is connected by GPRS module with detection main frame, described
The collection signal of host receiving data collector is detected, the data terminal of the data acquisition unit is connected by control line with detection cell
Connect, the control terminal of the detection cell is connected with magnetic valve, and the control terminal of the magnetic valve is connected with relay, the relay
The signal end of device is connected with PLC, and the monitor terminal is internally provided with embedded controller, the embedded Control
The signal end of device is provided with reseting module and clock circuit, and the signal end of the embedded controller is connected with wireless transceiver,
The output end of the wireless transceiver is connected with GPRS module, and the GPRS module passes through wireless network and Internet network
Node is connected, and the output end of the Internet network node is connected by wireless access point with high-definition camera, described
The data terminal of embedded controller is connected with data collecting card；
The display port of the embedded controller is provided with TFT LCDs, and the data terminal of the embedded controller connects
Parallel flash storage and SDRAM memory are connected to, the signal end of the embedded controller is provided with RJ45 interfaces, institute
The output end for stating RJ45 interfaces is connected with ethernet controller, and the signal end of the ethernet controller is connected with network interface
As a kind of preferable technical scheme of the present invention, the signal end of the embedded controller also by USB interface with it is wireless
Network interface card is connected, and the wireless network card receives the wireless signal of Omni-directional antenna, and the output end of the embedded controller passes through
Electrical level transferring chip is connected with UART interface, and the power end of embedded controller is provided with power supply circuit.
As a kind of preferable technical scheme of the present invention, the control terminal of the detection cell is connected with passage control electric pump, institute
The control terminal for stating passage control electric pump is connected by signal end with detection main frame, the control terminal difference of the passage control electric pump
It is connected with correcting fluid liquid storage tank, buffer solution liquid storage tank and water sample liquid storage tank.
As a kind of preferable technical scheme of the present invention, the detection cell is internally provided with three groups of detection style ponds, described
The inside in three groups of detection style ponds is provided with electrode combination socket, and the control terminal of the electrode combination socket is connected to ginseng
It is connected than electrode, working electrode and to electrode, the output end in the detection style pond with multichannel electric potential signal amplifier, institute
The output end output end for stating channeling potential signal amplifier is connected by gathering cable with A/D converter, the electrode group
The output end for closing socket is respectively connected with electrochemical signals collector, and the output end of the electrochemical signals collector is by gathering electricity
Cable and A/D converter, the output end of the A/D converter are connected by iic bus interface with detection main frame, the detection
The output end of main frame is connected by RS232 interface with FPGA controller.
As a kind of preferable technical scheme of the present invention, the signal end of the FPGA controller is connected with system control PC
End, the input at the system control PC ends are connected with KBC, and the I/O of the FPGA controller is connected with executive component
Connect, the output end of the FPGA controller is connected with alarm, signal end and the GPRS signal transceivers of the FPGA controller
It is connected.
As a kind of preferable technical scheme of the present invention, the signal end of the A/D converter is also associated with sensor assembly,
The sensor assembly includes sensor signal conditioning circuit and sensor node, and the sensor node receives sensor group
Feedback signal, the output end of the sensor node is connected by sensor signal conditioning circuit with FPGA controller, described
The output end of FPGA controller is also connected by Zigbee wireless transceivers with monitor terminal.
As a kind of preferable technical scheme of the present invention, the sensor group includes level sensor, PH sensor, conductance
Rate sensor, dissolved oxygen sensor, temperature sensor and turbidity transducer.
As a kind of preferable technical scheme of the present invention, the sensor signal conditioning circuit includes operational amplifier and difference
Divide amplifier, the in-phase end mouth of the operational amplifier receives the feedback signal of sensor, and first resistor by first resistor
Output end be grounded by second resistance, the anti-phase port of the operational amplifier is directly grounded by 3rd resistor, the fortune
The anti-phase port for calculating amplifier is also connected by control line with adjustable resistance, the output end and operation amplifier of the adjustable resistance
The output end of device is connected, and the output end of the operational amplifier passes through the 4th resistance in-phase end mouth with difference amplifier respectively
It is connected with the 5th resistance, the other end of the 5th resistance is directly grounded, and the anti-phase port of the difference amplifier passes through
Six resistance are connected with potentiometer, and the access circuit end of the potentiometer is connected with positive source, the potentiometer it is another
End is directly grounded, and the end of oppisite phase of the difference amplifier is connected by the 7th resistance with the output end of difference amplifier, institute
The output end for stating difference amplifier is connected by voltage-stabiliser tube with positive source, and the output end of the difference amplifier passes through filtering
Electric capacity is connected with power cathode, and the output end of the difference amplifier is connected by control line with the signal end of FPGA controller
Connect.
As a kind of preferable technical scheme of the present invention, the power supply circuit is internally provided with voltage stabilizing conversion chip.
As a kind of preferable technical scheme of the present invention, signal end and the Zigbee of the Zigbee wireless transceivers coordinate
Device is connected, and the Zigbee telegons are internally provided with multiple coordinator nodes.
Compared with prior art, the beneficial effects of the invention are as follows：
（1）The front monitoring front-end that the present invention uses carries out image compression encoding, Ran Houtong by high-definition camera collection site image
Network transmission is crossed to monitoring rear end；Transmission network, because front monitoring front-end is using GPRS wireless networks transmission data, wireless network can
To be linked to Internet network by accessed node, so monitoring rear end can be accessed on video server by Internet
Video data forms the wireless-transmission network of monitoring system；Monitoring rear end is the Surveillance center of video monitoring system, is responsible for video
The functions such as data receiver, decoding, display, and equipped with wireless network card in any local wireless mode access monitoring for having network
Head end video data, monitoring personnel can monitor so that handheld monitor terminal is portable, it is not necessary to and it is on duty in Surveillance center, it is effective to solve
Limited by signal coverage limitation and needs of the receiving and sending messages condition such as charge, reduce development cost, and it is simple to operate；
（2）The embedded microprocessor of the present invention uses the support of (SuSE) Linux OS, based on operating system application development
There are preferable transplantability, powerful network support function, while also reduce development difficulty.Video Monitoring Terminal employs embedded
(SuSE) Linux OS, contracting video data on video server is received by wireless network, decoding is utilized to the video data of reception
Storehouse real-time decoding, displaying scene monitored picture, improve the dynamics of remote monitoring so that anti-disaster of hydraulic engineering etc. operates
Can in time solve, reduce the frequency of flood generation, and using (SuSE) Linux OS program development is had preferably
Transplantability, powerful network support function, while also reduce development difficulty.
（3）After the detection main frame of the present invention receives the work order at system control PC ends, by control passage control electric pump,
Magnetic valve to the moisture content inside pipeline extract the workflows such as water to be measured, exhaust, verification, detection, cleaning, system to realize
Three independent detection style ponds are divided into according to the difference of detection heavy metal ion, using the detection list of fluorescence spectrophotometric method
During member work, detected water sample is contacted by detection cell with electrode, and according to surveying, content of the material in water is different, in respective electrode
Different electric potential signals is formed between reference electrode.Then, electric potential signal is sent into multi-channel electrochemical signal amplifier
Row amplification, then data signal is obtained by A/D converter.The data signal be sent to detection main frame be filtered, index conversion,
The processing such as alarm, verification.And the information of preliminary treatment is transmitted to host computer, host computer can be sent to far in real time by GPRS network
Process control center.In addition, remote control center also can control host computer to be examined online come indirect control heavy metal ion by GPRS
Examining system, meet the bidirectional data communication of system.
Brief description of the drawings
Fig. 1 is the overall structure diagram of the present invention；
Fig. 2 is the detection cell structural representation of the present invention；
Fig. 3 is the embedded controller structural representation of the present invention；
Fig. 4 is the FPGA controller structural representation of the present invention；
Fig. 5 is sensor of the invention signal conditioning circuit figure.
In figure：1- monitor terminals;2- detects main frame；3- detection cells；4- sensor assemblies；5-GPRS modules；6- data are adopted
Storage；7-Internet network nodes；8- high-definition cameras；
100- embedded controllers；101- reseting modules；102- clock circuits；103- wireless transceivers；104- data collecting cards；
105-TFT LCDs；The parallel flash storages of 106-；107-SDRAM memories；108-RJ45 interfaces；109- Ethernets
Controller；110- network interfaces；111-USB interfaces；112- wireless network cards；113- Omni-directional antennas；114- electrical level transferring chips；
115-UART interfaces；116- power supply circuits；117- voltage stabilizing conversion chips
200-RS232 interfaces；201-FPGA controllers；202- systems control PC ends；203- KBCs；204- performs member
Part；205- alarms；206-GPRS signal transceivers；
300- magnetic valves；301- relays；302-PLC controllers；303- passages control electric pump；304- correcting fluid liquid storage tanks；
305- buffer solution liquid storage tanks；306- water sample liquid storage tanks；307- detection styles pond；308- electrode combination sockets；309-IIC buses connect
Mouthful；310- reference electrodes；311- working electrodes；312- is to electrode；313- channeling potential signal amplifiers；314-A/D converters；
315- electrochemical signals collectors；
400- sensor signal conditioning circuits；401- sensor nodes；402- sensor groups；403-Zigbee wireless transceivers；
404-Zigbee telegons；405- coordinator nodes.
Embodiment
As shown in figure 1, the invention provides a kind of hydraulic engineering monitor terminal based on multi-sensor technology, including monitoring
Terminal 1 and detection main frame 2, the monitor terminal 1 are connected by GPRS module 5 with detection main frame 2, and the detection main frame 2 connects
The collection signal of data acquisition unit 6 is received, the data terminal of the data acquisition unit 6 is connected by control line with detection cell 3, described
The control terminal of detection cell 3 is connected with magnetic valve 300, and the control terminal of the magnetic valve 300 is connected with relay 301, described
The signal end of relay 301 is connected with PLC 302, and the monitor terminal 1 is internally provided with embedded controller 100,
The signal end of the embedded controller 100 is provided with reseting module 101 and clock circuit 102, the embedded controller 100
Signal end be connected with wireless transceiver 103, the output end of the wireless transceiver 103 is connected with GPRS module 5, described
GPRS module 5 is connected by wireless network with Internet network node 7, the output end of the Internet network node 7
It is connected by wireless access point with high-definition camera 8, the data terminal of the embedded controller 100 is connected with data collecting card
104, the monitor terminal 1 realizes that data communicate by wireless network with detection main frame 2, using high-definition camera collection site figure
Piece information, and vision signal is delivered to the inside of embedded controller 100 and carries out data processing, the command signal after processing is led to
Cross relay 301 to be controlled the break-make of magnetic valve 300, so as to realize the quantity control to water resources projects；
As shown in figure 3, the display port of the embedded controller 100 is provided with TFT LCDs 105, it is described embedded
The data terminal of controller 100 is connected with parallel flash storage 106 and SDRAM memory 107, the embedded controller 100
Signal end be provided with RJ45 interfaces 108, the output end of the RJ45 interfaces 108 is connected with ethernet controller 109, described
The signal end of ethernet controller 109 is connected with network interface 110, and the signal end of the embedded controller 100 also passes through
Usb 1 11 is connected with wireless network card 112, and the wireless network card 112 receives the wireless signal of Omni-directional antenna 113, described
The output end of embedded controller 100 is connected by electrical level transferring chip 114 with UART interface 115, and in embedded Control
The power end of device 100 is provided with power supply circuit 116, and the power supply circuit 116 is internally provided with voltage stabilizing conversion chip 117,
Data acquisition and processing (DAP), data are carried out for core with the embedded controller 100 of ARM9 series inside the monitor terminal
Collection refers to the simulation electric potential signal collected from each electrode, and data signal is converted into by A/D converter, is uploaded to detection master
Machine is filtered, denoising, and is sent to host computer and is carried out final analysis and processing.Wherein detect main frame by I2C buses with
A/D converter is connected, and I2C has interface line few, and control mode is simple, and device packing forms are small, and it is excellent that traffic rate is higher etc.
Point, meet system data acquisition transmission requirement.
As shown in Fig. 2 the control terminal of the detection cell 3 is connected with passage control electric pump 303, the passage controls electric pump
303 control terminal is connected by signal end with detection main frame 2, and the control terminal of the passage control electric pump 303 is connected to
Correcting fluid liquid storage tank 304, buffer solution liquid storage tank 305 and water sample liquid storage tank 306, the detection cell 3 are internally provided with three groups of detections
Style pond 307, the inside in three groups of detection styles pond 307 are provided with electrode combination socket 308, the electrode combination socket
308 control terminal is connected to reference electrode 310, working electrode 311 and to electrode 312, described to detect the defeated of style pond 307
Go out end with multichannel electric potential signal amplifier 313 to be connected, the output end output end of the channeling potential signal amplifier 313 is led to
Cross collection cable with A/D converter 314 to be connected, the output end of the electrode combination socket 308 is respectively connected with electrochemistry letter
Number collector 315, the output end of the electrochemical signals collector 315 are described by gathering cable and A/D converter 314
The output end of A/D converter 314 is connected by iic bus interface 309 with detection main frame 2, the output end of the detection main frame 2
It is connected by RS232 interface 200 with FPGA controller 201, the electric current by electrochemical signals collector 315 detection-phase
Peak is recorded, and can obtain the volt-ampere curve of this stage solution modeling.315 electrochemistry collected of electrochemical signals collector
Signal is sent into A/D converter 314 and obtains data signal, and is communicated by I2C buses with detection main frame 2, in detection main frame 2
In be filtered, index conversion, alarm, verification etc. processing.And the information of preliminary treatment is transmitted to system control PC ends 202, it is
System control PC ends 202 can be sent to remote control center in real time by GPRS network.In addition, remote control center can also pass through
Indirect control heavy metal ion on-line detecting system is carried out at GPRS control systems control PC ends 202, meets that the bi-directional data of system leads to
Letter.
As shown in figure 4, the signal end of the FPGA controller 201 is connected with system control PC ends 202, the system control
The input at PC ends 202 is connected with KBC 203, and the I/O of the FPGA controller 201 is connected with executive component 204,
The output end of the FPGA controller 201 is connected with alarm 205, signal end and the GPRS signals of the FPGA controller 201
Transceiver 206 is connected, and the signal end of the A/D converter 314 is also associated with sensor assembly 4, and the sensor assembly 4 wraps
Sensor signal conditioning circuit 400 and sensor node 401 are included, the sensor node 401 receives the feedback of sensor group 402
Signal, the output end of the sensor node 401 are connected by sensor signal conditioning circuit 400 with FPGA controller 201,
The output end of the FPGA controller 201 is also connected by Zigbee wireless transceivers 206 with monitor terminal 1, the sensing
Device group 402 includes level sensor, PH sensor, conductivity sensor, dissolved oxygen sensor, temperature sensor and turbidity sensing
Device, the inside of sensor group 402 are passed using WQ101 types temperature sensor, WQ201 type pH values sensor, WQ301 type electric conductivities
Sensor, WQ401 types dissolved oxygen sensor, the level sensor of WQ700 types turbidity transducer and PY201 models, have precision it is high,
Accuracy is good, highly reliable, low cost and other advantages, and the characteristics of be applied to ZigBee applications of wireless technology, the Zigbee without
The signal end of line transceiver 206 is connected with Zigbee telegons 404, and the Zigbee telegons 404 are internally provided with multiple
Coordinator node 403.
As shown in figure 5, the sensor signal conditioning circuit 400 includes operational amplifier Q1 and difference amplifier Q2, institute
The in-phase end mouth for stating operational amplifier Q1 receives the feedback signal of sensor, and first resistor R1 output by first resistor R1
End is grounded GND by second resistance R2, and the anti-phase port of the operational amplifier Q1 is directly grounded GND by 3rd resistor R3,
The anti-phase port of the operational amplifier Q1 is also connected by control line with adjustable resistance Rw, the output of the adjustable resistance Rw
End is connected with operational amplifier Q1 output end, the output end of the operational amplifier Q1 by the 4th resistance R4 respectively with difference
The in-phase end mouth and the 5th resistance R5 for dividing amplifier Q2 are connected, and the other end of the 5th resistance R5 is directly grounded GND, described
Difference amplifier Q2 anti-phase port is connected by the 6th resistance R6 with potentiometer Rs, the access circuit end of the potentiometer Rs
It is connected with positive source VCC, the other end of the potentiometer Rs is directly grounded GND, and the difference amplifier Q2's is anti-phase
End is connected by the 7th resistance R7 with difference amplifier Q2 output end, and the output end of the difference amplifier Q2 passes through voltage stabilizing
Pipe D1 is connected with positive source VCC, and the output end of the difference amplifier Q2 passes through filter capacitor C1 and power cathode GND phases
Connection, the output end of the difference amplifier Q2 is connected by control line with the signal end of FPGA controller 201, using sensing
Off-gauge current signal of the sensor feedback of different model is converted into being easy to embedded Control by device signal conditioning circuit 400
Device carries out the standard signal of data processing, in the design of signal conditioning circuit, is mutually put using LM358 types amplifier composition prime is same
Big circuit and rear class differential amplifier circuit, and by adjusting the related potential device in circuit, realize what is exported by various sensors
Transformation of the non-standard signal to standard signal.
In summary, the main characteristic of the invention lies in that：
（1）The front monitoring front-end that the present invention uses carries out image compression encoding, Ran Houtong by high-definition camera collection site image
Network transmission is crossed to monitoring rear end；Transmission network, because front monitoring front-end is using GPRS wireless networks transmission data, wireless network can
To be linked to Internet network by accessed node, so monitoring rear end can be accessed on video server by Internet
Video data forms the wireless-transmission network of monitoring system；Monitoring rear end is the Surveillance center of video monitoring system, is responsible for video
The functions such as data receiver, decoding, display, and equipped with wireless network card in any local wireless mode access monitoring for having network
Head end video data, monitoring personnel can monitor so that handheld monitor terminal is portable, it is not necessary to and it is on duty in Surveillance center, it is effective to solve
Limited by signal coverage limitation and needs of the receiving and sending messages condition such as charge, reduce development cost, and it is simple to operate；
（2）The embedded microprocessor of the present invention uses the support of (SuSE) Linux OS, based on operating system application development
There are preferable transplantability, powerful network support function, while also reduce development difficulty.Video Monitoring Terminal employs embedded
(SuSE) Linux OS, contracting video data on video server is received by wireless network, decoding is utilized to the video data of reception
Storehouse real-time decoding, displaying scene monitored picture, improve the dynamics of remote monitoring so that anti-disaster of hydraulic engineering etc. operates
Can in time solve, reduce the frequency of flood generation, and using (SuSE) Linux OS program development is had preferably
Transplantability, powerful network support function, while also reduce development difficulty.
（3）After the detection main frame of the present invention receives the work order at system control PC ends, by control passage control electric pump,
Magnetic valve to the moisture content inside pipeline extract the workflows such as water to be measured, exhaust, verification, detection, cleaning, system to realize
Three independent detection style ponds are divided into according to the difference of detection heavy metal ion, using the detection list of fluorescence spectrophotometric method
During member work, detected water sample is contacted by detection cell with electrode, and according to surveying, content of the material in water is different, in respective electrode
Different electric potential signals is formed between reference electrode.Then, electric potential signal is sent into multi-channel electrochemical signal amplifier
Row amplification, then data signal is obtained by A/D converter.The data signal be sent to detection main frame be filtered, index conversion,
The processing such as alarm, verification.And the information of preliminary treatment is transmitted to host computer, host computer can be sent to far in real time by GPRS network
Process control center.In addition, remote control center also can control host computer to be examined online come indirect control heavy metal ion by GPRS
Examining system, meet the bidirectional data communication of system.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the present invention is by appended power
Profit requires rather than described above limits, it is intended that all in the implication and scope of the equivalency of claim by falling
Change is included in the present invention.Any reference in claim should not be considered as to the involved claim of limitation.
Claims (10)
- A kind of 1. hydraulic engineering monitor terminal based on multi-sensor technology, it is characterised in that：Including monitor terminal（1）And detection Main frame（2）, the monitor terminal（1）Pass through GPRS module（5）With detecting main frame（2）It is connected, the detection main frame（2）Receive Data acquisition unit（6）Collection signal, the data acquisition unit（6）Data terminal pass through control line and detection cell（3）It is connected, The detection cell（3）Control terminal and magnetic valve（300）It is connected, the magnetic valve（300）Control terminal and relay（301） It is connected, the relay（301）Signal end and PLC（302）It is connected, the monitor terminal（1）Inside is set There is embedded controller（100）, the embedded controller（100）Signal end be provided with reseting module（101）With clock electricity Road（102）, the embedded controller（100）Signal end be connected with wireless transceiver（103）, the wireless transceiver （103）Output end and GPRS module（5）It is connected, the GPRS module（5）Pass through wireless network and Internet network section Point（7）It is connected, the Internet network node（7）Output end pass through wireless access point and high-definition camera（8）It is connected Connect, the embedded controller（100）Data terminal be connected with data collecting card（104）；The embedded controller（100）Display port be provided with TFT LCDs（105）, the embedded controller （100）Data terminal be connected with parallel flash storage（106）And SDRAM memory（107）, the embedded controller （100）Signal end be provided with RJ45 interfaces（108）, the RJ45 interfaces（108）Output end be connected with Ethernet control Device（109）, the ethernet controller（109）Signal end and network interface（110）It is connected.
- A kind of 2. hydraulic engineering monitor terminal based on multi-sensor technology according to claim 1, it is characterised in that：Institute State embedded controller（100）Signal end also pass through USB interface（111）With wireless network card（112）It is connected, the wireless network Card（112）Receive Omni-directional antenna（113）Wireless signal, the embedded controller（100）Output end pass through level turn Change chip（114）With UART interface（115）It is connected, and in embedded controller（100）Power end be provided with power supply circuit （116）.
- A kind of 3. hydraulic engineering monitor terminal based on multi-sensor technology according to claim 1, it is characterised in that：Institute State detection cell（3）Control terminal be connected with passage control electric pump（303）, the passage control electric pump（303）Control terminal pass through Signal end and detection main frame（2）It is connected, the passage controls electric pump（303）Control terminal be connected to correcting fluid liquid storage tank （304）, buffer solution liquid storage tank（305）With water sample liquid storage tank（306）.
- A kind of 4. hydraulic engineering monitor terminal based on multi-sensor technology according to claim 1, it is characterised in that：Institute State detection cell（3）It is internally provided with three groups of detection style ponds（307）, three groups of detection styles pond（307）Inside be respectively provided with There is electrode combination socket（308）, the electrode combination socket（308）Control terminal be connected to reference electrode（310）, work Electrode（311）With to electrode（312）, the detection style pond（307）Output end and multichannel electric potential signal amplifier（313） It is connected, the channeling potential signal amplifier（313）Output end output end by gathering cable and A/D converter （314）It is connected, the electrode combination socket（308）Output end be respectively connected with electrochemical signals collector（315）, the electricity Chemical signal collector（315）Output end by gathering cable and A/D converter（314）, the A/D converter（314） Output end pass through iic bus interface（309）With detecting main frame（2）It is connected, the detection main frame（2）Output end pass through RS232 interface（200）With FPGA controller（201）It is connected.
- A kind of 5. hydraulic engineering monitor terminal based on multi-sensor technology according to claim 4, it is characterised in that：Institute State FPGA controller（201）Signal end be connected with system control PC ends（202）, the system control PC ends（202）Input End is connected with KBC（203）, the FPGA controller（201）I/O and executive component（204）It is connected, it is described FPGA controller（201）Output end be connected with alarm（205）, the FPGA controller（201）Signal end and GPRS believe Number transceiver（206）It is connected.
- A kind of 6. hydraulic engineering monitor terminal based on multi-sensor technology according to claim 4, it is characterised in that：Institute State A/D converter（314）Signal end be also associated with sensor assembly（4）, the sensor assembly（4）Including sensor signal Modulate circuit（400）And sensor node（401）, the sensor node（401）Receive sensor group（402）Feedback letter Number, the sensor node（401）Output end pass through sensor signal conditioning circuit（400）With FPGA controller（201）Phase Connection, the FPGA controller（201）Output end also pass through Zigbee wireless transceivers（206）With monitor terminal（1）It is connected Connect.
- A kind of 7. hydraulic engineering monitor terminal based on multi-sensor technology according to claim 6, it is characterised in that：Institute State sensor group（402）Including level sensor, PH sensor, conductivity sensor, dissolved oxygen sensor, temperature sensor and Turbidity transducer.
- A kind of 8. hydraulic engineering monitor terminal based on multi-sensor technology according to claim 1, it is characterised in that：Institute State sensor signal conditioning circuit（400）Including operational amplifier（Q1）And difference amplifier（Q2）, the operational amplifier （Q1）In-phase end mouth pass through first resistor（R1）Receive the feedback signal of sensor, and first resistor（R1）Output end pass through Second resistance（R2）Ground connection（GND）, the operational amplifier（Q1）Anti-phase port pass through 3rd resistor（R3）It is directly grounded （GND）, the operational amplifier（Q1）Anti-phase port also pass through control line and adjustable resistance（Rw）It is connected, the adjustable electric Resistance（Rw）Output end and operational amplifier（Q1）Output end be connected, the operational amplifier（Q1）Output end pass through Four resistance（R4）Respectively with difference amplifier（Q2）In-phase end mouth and the 5th resistance（R5）It is connected, the 5th resistance（R5） The other end be directly grounded（GND）, the difference amplifier（Q2）Anti-phase port pass through the 6th resistance（R6）With potentiometer （Rs）It is connected, the potentiometer（Rs）Access circuit end and positive source（VCC）It is connected, the potentiometer（Rs）It is another One end is directly grounded（GND）, the difference amplifier（Q2）End of oppisite phase pass through the 7th resistance（R7）With difference amplifier （Q2）Output end be connected, the difference amplifier（Q2）Output end pass through voltage-stabiliser tube（D1）With positive source（VCC）Phase Connection, the difference amplifier（Q2）Output end pass through filter capacitor（C1）With power cathode（GND）It is connected, the difference Amplifier（Q2）Output end pass through control line and FPGA controller（201）Signal end be connected.
- A kind of 9. hydraulic engineering monitor terminal based on multi-sensor technology according to claim 2, it is characterised in that：Institute State power supply circuit（116）Be internally provided with voltage stabilizing conversion chip（117）.
- A kind of 10. hydraulic engineering monitor terminal based on multi-sensor technology according to claim 5, it is characterised in that： The Zigbee wireless transceivers（206）Signal end and Zigbee telegons（404）It is connected, the Zigbee telegons （404）It is internally provided with multiple coordinator nodes（403）.
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Application publication date: 20180302 |