CN207182031U - Dykes and dams monitoring of leakage prior-warning device - Google Patents
Dykes and dams monitoring of leakage prior-warning device Download PDFInfo
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- CN207182031U CN207182031U CN201721144871.6U CN201721144871U CN207182031U CN 207182031 U CN207182031 U CN 207182031U CN 201721144871 U CN201721144871 U CN 201721144871U CN 207182031 U CN207182031 U CN 207182031U
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Abstract
The utility model discloses a kind of dykes and dams monitoring of leakage prior-warning device, including signal access unit, feature extraction and signal conversion unit, CPU element and host computer.Signal access unit obtains dykes and dams monitoring signals under CPU element control by 16 probes of connected insertion dykes and dams earth's surface, dykes and dams seepage information is extracted in the monitoring signals that feature extraction exports with signal conversion unit under CPU element control from signal access unit and is converted to data signal, CPU element gathers and preserves the real time data of dykes and dams monitoring of leakage for host computer reading, host computer analysis management software passes through reading device Real-time Monitoring Data, can qualitative analysis dykes and dams internal structure change situation, quantitatively calculate the buried depth of dykes and dams percolating water, water amount of seepage.The beneficial effects of the utility model are：It can be obtained under the premise of low cost compared with high workload efficiency, can clearly monitor dykes and dams inside points boundary line and determine the position of breakthrough, and equipment is light, is widely used.
Description
Technical field
A kind of disaster monitoring instrument is the utility model is related to, especially a kind of monitoring and warning dress for being used to monitor dykes and dams seepage
Put.
Background technology
Dykes and dams are total appellations on dike and dam, also refer to building and structures that waterproof blocks water.Traditional dykes and dams mainly have
Two major classes：Earth and rockfill dam and concrete dam；In recent years, large-scale dykes and dams all use high-tech reinforced concrete construction.Earth and rockfill dam is to use
The wide dam that soil or stone are built, because the hydraulic pressure that bears of bottom is big more than top, bottom is wide compared with top；Earth and rockfill dam is more
Cross great river to build up, be all not only common but also cheap material；Due to material loosely, shaking for ground can be born,
But water can slowly penetrate into dykes and dams, the firmness degree of dykes and dams is reduced, the clay of last layer waterproof, or design can be often added on dykes and dams surface
Some passages, the water of a part is allowed to flow away.Concrete dam is built of concrete more, generally builds in deep and narrow mountain valley, because
Only concrete can just bear the high hydraulic pressure of dam base；Concrete dam can be subdivided into concrete gravity dam, arched concrete dam,
Concrete buttress dam etc., being mainly characterized by of concrete dam support water body pressure using the weight of itself.
Seepage of dykes and basic piping be two kinds occurred in river, reservoir, lake region flood control works it is most common and destroy
Property maximum geological disaster.River, reservoir, lake region Seepage of dykes and the generation of basic piping, except by addition in hydrodynamic condition
Control is outer, and the engineering geological condition on levee body and basis is most important factor.For piping, underground water backwater causes ground in dike
Face water burst typically has three kinds of situations：（1）When underground water backwater head pressure is more than cap rock weight, then cap rock destroys, underground water
Gush out ground；（2）When having surface water body on cap rock, now underground water backwater head pressure is more than cap rock weight and water colunm pressure
During power sum, cap rock is destroyed, and underground water gushes out ground；（3）In piping layer, stream soil layer exposed area, when underground water backed-up water level is high
When ground, underground water gushes out ground.Therefore, reliably monitor river, reservoir, in the dykes and dams of lake region underground water active situation, be
Prevent and treat seepage, the major measure of piping.
Seepage and piping are the maximum diseases of dykes and dams destructive power, and it is mainly by dam foundation engineering and the dual shadow of geological conditions
Ring.Dykes and dams seepage is monitored and finds that leakage anomaly turns into the emphasis problem of current research in time.At present, China's measurement is oozed
The method of leakage mainly has drill hole sampling method, manually patrol method, geophysical exploration etc..Traditional monitoring of leakage method and exploration mineral products
Means it is similar, the appearance of dangerous situation can only be monitored, can not accurately monitor leakage data and to dangerous situation carry out early warning, lead
Cause accident can not control effectively when occurring to it, jeopardize people life property safety.Although domestic and international many scholars are
Research was carried out to dykes and dams monitoring of leakage, and proposed based on a variety of prisons such as transient electromagnetic method, shallow earthquake method, GPR methods
Survey method.The common ground of these methods is that the geophysical prospecting method of searching Solid Mineral is applied in dykes and dams monitoring of leakage, and instrument is surveyed
Value reflection is geologic body physical property integrated value, belongs to static information, and these methods are merely able to know whether underground is low-resistance region,
Whether there is water as underground, water has much, and how much water velocity is to know.Can a kind of reliable prison of utility model
The monitoring warning device of dykes and dams seepage is surveyed, scientific and technological circle never solve both at home and abroad at present, there is no achievement in research and the production of correlation
Product are reported.
The content of the invention
Insufficient existing for current dykes and dams monitoring of leakage method and apparatus in order to overcome, the utility model discloses a kind of dykes and dams
Monitoring of leakage prior-warning device.
The technical solution adopted in the utility model is：A kind of dykes and dams monitoring of leakage prior-warning device, including signal access unit,
Feature extraction and signal conversion unit, CPU element and host computer, it is characterised in that：The signal access unit is in CPU element control
Lower 16 probes by connected insertion dykes and dams earth's surface of system obtain dykes and dams monitoring signals and are output to feature extraction and letter
Number converting unit, the feature extraction extract dykes and dams seepage under CPU element control with signal conversion unit from monitoring signals
Information is simultaneously converted to CPU element is sent after data signal, and the CPU element gathers and preserves the real time data of dykes and dams monitoring of leakage and supplies
Host computer is read, and the upper computer software is handled by Real-time Monitoring Data to carry out qualitative and quantitative analysis to dykes and dams seepage.
In the utility model, described signal access unit include 16 probe interfaces, 16 channel signal termination powers,
Channel selector switch, input adaptation circuit, 50Hz trap circuits, low-pass filter circuit and two 2 select 1 switch, and 16 probes obtain
The dykes and dams monitoring signals taken are connected to the input of channel selector switch through probe interface, signal coupling circuit, and channel selecting is opened
The output of pass is connected to the input of input adaptation circuit, and the output of input adaptation circuit directly connects with through 50Hz trap circuits
The input for selecting 1 switch to preceding 2, preceding 2 select the output of 1 switch to be directly connected to rear 2 with low-pass filtered circuit and select the defeated of 1 switch
Enter end, rear 2 select the output of 1 switch to be connected to feature extraction and signal conversion unit；Channel selecting and two 2 select 1 switch be
It is operated under CPU element control.
In the utility model, described feature extraction includes preceding controllable gain amplifier, band logical with signal conversion unit
Optional wave filter group, rear controllable gain amplifier, A/D converter, preceding controllable gain amplifier receive single from signal access
The input of the optional wave filter group of band logical is connected to after the output signal of member and amplification, the optional wave filter group of band logical is selected to be measured
The dykes and dams monitoring signals of depth are simultaneously connected to the input of rear controllable gain amplifier, and rear variable gain amplifier is by depth to be measured
Dykes and dams monitoring signals are amplified to the input for meeting the signal of A/D converter input requirements and being connected to A/D converter,
The analog signal that A/D converter is inputted is converted into data signal and is transferred to CPU element；Forward and backward controllable gain amplification
The bandpass center frequency of the optional wave filter group of multiplication factor and band logical of device is adjusted and controlled by CPU element.
In the utility model, described CPU element includes DSP, CPLD, RAM, ROM, USB interface, clock with resetting electricity
Road, clock are connected to DSP, DSP data/address bus connection CPLD, RAM, ROM, feature extraction and signal conversion list with reset circuit
The analog/digital conversion circuit of member, USB interface chip, CPLD logic output are connected to RAM, ROM, USB interface chip, signal and connect
Enter the control signal of unit, feature extraction and signal conversion unit；The dykes and dams seepage can be read by USB interface in host computer
The Real-time Monitoring Data of monitoring warning device configures to monitoring and warning parameter.
In the utility model, the analysis management software of the host computer can be determined by reading device Real-time Monitoring Data
Property analysis dykes and dams internal structure change situation, quantitatively calculate the buried depth of dykes and dams percolating water, water amount of seepage.
The utility model device is by signal access unit, feature extraction and signal conversion unit, CPU element and upper unit
Into, natively to descend magnetic field as detection operations field, by monitoring penetrate dykes and dams to the natural electric magnetic wave of earth's surface, judge inside dykes and dams
Geologic structure and breakthrough.Its advantage is：（1）Using underground Natural electromagnetic field as yard, in low cost
Under the premise of obtain higher operating efficiency；（2）Monitoring will not clearly can be monitored inside dykes and dams by Geological Environment Influence
Line of demarcation, determine the position of breakthrough；（3）Device is not required to artificial power supply field, and equipment is light, using relatively broad.
Brief description of the drawings
Fig. 1 is general structure block diagram of the present utility model；
Fig. 2 is the signal access unit structured flowchart of the utility model embodiment；
Fig. 3 is the feature extraction and signal conversion unit structured flowchart of the utility model embodiment；
Fig. 4 is the CPU element structured flowchart of the utility model embodiment；
Fig. 5 is the dykes and dams leaky properties hum pattern of the utility model embodiment.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describe；Obviously, described embodiment is only the utility model part of the embodiment, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belong to the scope of the utility model protection.
Referring to accompanying drawing, Fig. 1 is general structure block diagram of the present utility model.Dykes and dams monitoring of leakage early warning dress of the present utility model
Put and be made up of the part such as signal access unit, feature extraction and signal conversion unit, CPU element and host computer.Signal access is single
Member can external 16 insertions dykes and dams earth's surface be used for obtain the probes of dykes and dams monitoring signals, realize probe under CPU element control
Access selection, the selection of 50Hz traps and LPF selection；Access way is selected to meet different monitoring ranges using multiprobe
Requirement, to solve the reliable monitoring of Hz noise environment, the utility model introduces selectable 50Hz trap circuits, that is, exists
When Hz noise is serious monitoring signals by 50Hz traps, Hz noise it is smaller when monitoring signals do not pass through 50Hz traps；Due to
The electromagnetic environment at dykes and dams monitoring of leakage scene is extremely complex, and dykes and dams leaky properties information focuses mostly in low frequency part, to reduce
Influence of the High-frequency Interference to monitoring information, the utility model introduces selectable low-pass filter circuit, i.e., tight in High-frequency Interference
Weight when monitoring signals by LPF, High-frequency Interference it is smaller when monitoring signals do not pass through LPF；Signal access unit
Output signal is connected to the signal input part of feature extraction and signal conversion unit.Feature extraction is with signal conversion unit in CPU
Dykes and dams seepage information is extracted from monitoring signals and send CPU element, CPU element collection after being converted to data signal under unit control
And the real time data for preserving dykes and dams monitoring of leakage is read for host computer, upper computer software is handled by Real-time Monitoring Data can be to dam
Dike seepage carries out qualitative and quantitative analysis.
Accompanying drawing 2 is the signal access unit structured flowchart of the utility model embodiment.Signal access unit is by 16 probes
Interface, 16 channel signal termination powers, channel selector switch, input adaptation circuit, 50Hz trap circuits, low-pass filter circuit and
The part such as 1 switch is selected for two 2 to form.The dykes and dams monitoring signals that 16 probes obtain connect through probe interface, signal coupling circuit
To the input of channel selector switch, the output of channel selector switch is connected to the input of input adaptation circuit, input adaptation
The output of circuit directly and through 50Hz trap circuits is connected to preceding 2 inputs for selecting 1 switch, preceding 2 select the output of 1 switch directly with
Low-pass filtered circuit is connected to rear 2 inputs for selecting 1 switch, and rear 2 select the output of 1 switch to be connected to feature extraction turns with signal
Change unit.The channel selecting of signal access unit and two 2 select 1 switch to be operated under CPU element control.Probe obtains
The dykes and dams monitoring of leakage signal taken is connected to signal coupling circuit through probe interface, and signal coupling circuit can filter out probe and spy
Unwanted EMI noise on pin connecting line, and the signal that probe is got is coupled to the input of channel selector switch.Letter
Number transmit to channel selector switch, the probe number for selecting to set according to user by the CPU element in the utility model, pass through
CPLD（Complex logic programming device）Control code is sent to select required probe signals input channel, is then transmit to input
Adapter circuit.Input adaptation circuit carries out impedance matching and high-pass filtering to the signal of input, to ensure the one of signal source impedance
Cause property and the decay DC level drift caused by virtual earth, then signal transmit power frequency to selectable 50Hz trap circuits
Interference signal decays to minimum.Because the useful signal in dykes and dams monitoring of leakage concentrates on low frequency part, signal is fallen into by 50Hz
Transmitted after wave circuit to selectable low-pass filter circuit, low-pass filter circuit and the HFS of signal is filtered out, then
Signal is transmitted to feature extraction and signal conversion unit.
Accompanying drawing 3 is the feature extraction and signal conversion unit structured flowchart of the utility model embodiment.Feature extraction and letter
Number converting unit is by preceding controllable gain amplifier, the optional wave filter group of band logical, rear controllable gain amplifier, A/D converter etc.
Part forms.It is optional that band logical is connected to after preceding controllable gain amplifier output signal of the reception from signal access unit and amplification
The input of wave filter group, the optional wave filter group of band logical select the dykes and dams monitoring signals of depth to be measured and are connected to rear controllable increasing
The input of beneficial amplifier, depth dykes and dams monitoring signals to be measured are amplified to by rear variable gain amplifier meets A/D converter
The signal of input requirements and the input for being connected to A/D converter, the analog signal that A/D converter is inputted are converted into
Data signal is simultaneously transferred to CPU element；The band logical of the optional wave filter group of multiplication factor and band logical of forward and backward controllable gain amplifier
Centre frequency is adjusted and controlled by CPU element.Dykes and dams monitoring of leakage weak output signal and fluctuation range is big, the dam of probe pickup
Dike monitoring of leakage signal by signal access unit to feature extraction and the preceding controllable gain amplifier of signal conversion unit, by
The DSP of CPU element calculates gain control code according to the output valve of A/D converter and exported through CPLD, with controllable increasing before realization
The Gain Automatic regulation of beneficial amplifier, monitoring signals is amplified in recognizable scope.Because dykes and dams monitoring of leakage information in dam has
There is the features such as frequency is low, amplitude is small, is easily disturbed, to realize that the seepage information to dykes and dams different depth is observed, preceding controllable gain
The output of amplifier is connected to the optional wave filter group of band logical, the signal that optional bandpass filter allows in selected frequency range by,
And the interference signal outside this frequency range is suppressed or makes its sharp-decay, make the optional filtering of band logical of the present utility model
Device group can selectively analyze the dykes and dams seepage information of different depth under the DSP and CPLD of CPU element control.At this
Set in the optional wave filter group of band logical of utility model without gain, to coordinate follow-up A/D converter, improve measurement data
Resolution ratio and measurement accuracy need to need to do further amplification to filtered signal, so as to which signal is after the optional wave filter group of band logical
Transmit to rear controllable gain amplifier, then just transmit to analog/digital conversion circuit.The utility model analog/digital conversion circuit
It is 12 low-power consumption of high-performance of TI companies production, high speed (3.6 μ s) that ADC, which uses TLV2544/2548, TLV2544/2548,
CMOS analog-digital converters, its precision height, small volume, passage are more, using flexible, and keep function, supply voltage with sampling one
For 2.7V~5.5V.Analog/digital conversion circuit converts analog signals into data signal, and by digital data transmission to CPU element
DSP；Meanwhile the DSP of CPU element can according to A/D converter output valve, rear controllable gain is amplified by CPLD its, band
Logical optional wave filter group, preceding controllable gain amplifier are automatically controlled and adjusted, to ensure the resolution ratio of measurement data and survey
Accuracy of measurement.
Accompanying drawing 4 is the CPU element structured flowchart of the utility model embodiment.CPU element by DSP, CPLD, RAM, ROM,
The part such as USB interface, clock and reset circuit forms.Clock is connected to DSP, DSP data/address bus connection with reset circuit
CPLD, RAM, ROM, analog/digital conversion circuit, the USB interface chip of feature extraction and signal conversion unit, CPLD logic output
It is connected to the control signal of RAM, ROM, USB interface chip, signal access unit, feature extraction and signal conversion unit；On
Position machine can be read Real-time Monitoring Data of the present utility model by USB interface or monitoring and warning parameter configured.Clock with
Reset circuit is respectively that DSP provides work clock and power-on reset signal；ROM is used for the configuration processor and parameter of save set；
RAM is used for the intermediate data of save set program operation process；CPLD employs the extremely low ispMACH4000Z systems of quiescent dissipation
Row complex logic programming device, is the other circuits of device and DSP logic input/output interface, and the address for completing the present apparatus is translated
The functions such as code, data transfer, control output, information encryption.The DSP of CPU element can be according to user instruction, by CPLD to passage
The optional wave filter group of selecting switch, band logical, former and later two 2 select 1 switch to send setting signal, to realize that signal input and monitoring are deep
Degree selects, effectively suppresses Hz noise and High-frequency Interference；Meanwhile DSP receives the numeral that analog/digital conversion circuit is transmitted
Signal, gain control signal is produced after being analyzed and processed and preceding controllable gain amplifier, rear controllable gain are controlled by CPLD
Amplifier, realize the adaptive amplification to different size signal；Complete more than be set and controlled after, DSP passes through analog
Converter is acquired to the dykes and dams monitoring of leakage signal acquired in designated depth, dedicated tunnel probe, and is combined gain and controlled
Code is converted to the data signal of collection the actual value acquired in probe, and the numeral after changing will be gathered by, which being set further according to user, believes
Number host computer is output to by USB interface.
Because the utility model belongs to the battery powered monitoring device that field uses, have for power consumption and cost very high
It is required that.Therefore, use 3.3V operating voltage inside device, DSP selection interface levels 3.3V, core operational voltage 1.2V it is floating
Point digital signal processor, CPLD selection interface levels 3.3V, core operational voltage 1.8V complex logic programming device, its
Its chip is the low energy-consumption electronic device of 3.3V operating voltages.
Accompanying drawing 5 is the dykes and dams leaky properties hum pattern of the utility model embodiment.In the utility model embodiment, CPU is mono-
The USB interface of member is used to connect upper PC.Upper PC reads the Real-time Monitoring Data of the utility model device through USB interface
Afterwards, the institute of accompanying drawing 5 is can obtain after the methods of data are carried out with digital anti-aliasing filtering, FFT and frequency spectrum refinement, spectral line search processing
The dykes and dams leaky properties hum pattern shown.The interflow subsurface drainage water of veiny stream in dykes and dams piping, seepage crack, flowed by hydrology rule
The earth's magnetic field magnetic line of force can be cut in dykes and dams and produces induced electromotive force；The induced electromotive force is fainter, can not penetrate stratum transmission
To ground；But it can produce continual interference to natural transient electrical magnetic wave of the underground at this, finally be attached to the electromagnetic wave
Earth's surface is transferred on signal.It is dykes and dams leaky properties information this signal definition for being attached with dykes and dams seepage runoff water information,
Accompanying drawing 5 is the dykes and dams leaky properties information that the utility model device monitors in dykes and dams earth's surface.The top half of accompanying drawing 5 is natural wink
Become the time domain waveform of electromagnetic wave, the latter half is dykes and dams leaky properties spectrogram in natural transient electrical magnetic wave.Among spectrogram most
High spectral line is referred to as dominant frequency spectral line, is distributed in dominant frequency spectral line both sides and is referred to as side frequency spectral line on the symmetrical spectral line of dominant frequency.Dominant frequency
Spectral line amplitudeE (t) characterize dykes and dams inside certain depth structure electrical value, by contrasting dominant frequency amplitudeE (t) integrated value with week
The situation of change of measuring point is enclosed, the monitoring materials of measuring point with reference to known to neighbouring, the structure inside qualitative analysis dykes and dams in certain depth becomes
Change situation.Side frequency spectral line characterizes the active situation of dykes and dams percolating water, side frequency spectral line amplitudee (t) represent that dykes and dams percolating water instantaneously flows
The size of amount, side frequency spectral line claim side frequency frequency, side frequency frequency representation dykes and dams percolating water instantaneous flow apart from the far and near of dominant frequency spectral line
The speed of speed.According to Theory of Electromagnetic Field, the conduction electric current of natural transient electrical magnetic wave in the earth formation is far longer than displacement current, then
Its penetration depth is
(unit：m)
In above formula,f z For dykes and dams percolating water characteristics of Runoff dominant frequency frequency；ρFor the dykes and dams subsurface resistivities of monitoring point, typically
Dykes and dams earth's surface is mostly loose soil layer, takes its average resistivityρ≈10（Ω.m）；Assuming that the dam that natural transient electrical magnetic wave penetrates
Dike is nonmagnetic medium, then magnetic conductivity takesμ=4π×10-7 H/m；Buried depth and the master of dykes and dams percolating water runoff are obtained accordingly
The relation of frequent rate is as follows
(unit：m)
The underground water of flowing can cut the magnetic line of force in earth's magnetic field and produce induced electromotive forcee, according to Electromagnetic Flow principle, sense
Answer electromotive forcee（Unit：mV）With flowQEquation be
In formula, B is the nagneto-telluric field induction in monitoring place（Unit：mV/m 2 ）, K be constant, for known to one
Monitored area for they be all constant, but need to look for reference the test point progress of known water whole near monitored area
It is fixed；L is the girth in dykes and dams seepage water stream channel section（Unit：m）.
Actual detection work shows that flow velocity that dykes and dams percolating water flows in dykes and dams crack, flow all change over time
, its caused induced electromotive forceeIt is the timetFunction, be calculated ase (t)=0.5 [e 1(t)+e 2(t)]。e (t) oozed with dykes and dams
Water leakageS l Between relation be
(unit：m 3/h)
In formula,TFor the period of change of groundwater flow, the utility model device can detect the change of dykes and dams percolating water runoff
Change the cycleT（Side frequency frequencyf bInverse）And the cycleTInterior induced electromotive forcee (t) integrated value, can simply be estimated by above formula
Go out dykes and dams water amount of seepageS l 。
In summary, the utility model discloses a kind of dykes and dams monitoring of leakage prior-warning device, including signal access unit, spy
Sign extraction and signal conversion unit, CPU element and host computer.Signal access unit is under CPU element control by being connected thereto
16 probes of insertion dykes and dams earth's surface obtain and dykes and dams monitoring signals and be output to feature extraction and signal conversion unit, feature carries
Take with signal conversion unit after extracting dykes and dams seepage information from monitoring signals under CPU element controls and being converted to data signal
CPU element is sent, CPU element gathers and preserves the real time data of dykes and dams monitoring of leakage for host computer reading, the analyzer tube of host computer
Software is managed by reading device Real-time Monitoring Data, can qualitative analysis dykes and dams internal structure change situation, quantitatively calculate dykes and dams and ooze
The buried depth of leak, water amount of seepage.Based on domestic and international progress, there is Natural electromagnetic field, therefore the utility model in underground
Natively to descend magnetic field as detection operations field, dykes and dams are penetrated to the natural electric magnetic wave of earth's surface by monitoring, judged inside dykes and dams
Geologic structure and breakthrough.The advantages of the utility model device, is：（1）Using underground Natural electromagnetic field as yard,
Higher operating efficiency is obtained on the premise of low cost；（2）Monitoring will not can be monitored clearly by Geological Environment Influence
Dykes and dams inside points boundary line, determine the position of breakthrough；（3）Device is not required to artificial power supply field, and equipment is light, using relatively broad.
It the foregoing is only preferred embodiment of the present utility model and oneself, it is all at this not to limit the utility model
Within the spirit and principle of utility model, any modification, equivalent substitution and improvements made etc., the utility model should be included in
Protection domain within.
Claims (5)
1. a kind of dykes and dams monitoring of leakage prior-warning device, including signal access unit, feature extraction and signal conversion unit, CPU mono-
Member and host computer, it is characterised in that：The signal access unit passes through connected insertion dykes and dams under CPU element control
16 probes of table obtain dykes and dams monitoring signals and are output to feature extraction and signal conversion unit, the feature extraction and signal
Converting unit extracts dykes and dams seepage information from monitoring signals under CPU element control and send CPU mono- after being converted to data signal
Member, the CPU element gather and preserve the real time data of dykes and dams monitoring of leakage and read for host computer, and the upper computer software passes through
Real-time Monitoring Data processing can carry out qualitative and quantitative analysis to dykes and dams seepage.
2. dykes and dams monitoring of leakage prior-warning device according to claim 1, it is characterised in that：Described signal access unit bag
Include 16 probe interfaces, 16 channel signal termination powers, channel selector switch, input adaptation circuit, 50Hz trap circuits, low pass
Filter circuit and two 2 select 1 switch, and the dykes and dams monitoring signals that 16 probes obtain connect through probe interface, signal coupling circuit
To the input of channel selector switch, the output of channel selector switch is connected to the input of input adaptation circuit, input adaptation
The output of circuit directly and through 50Hz trap circuits is connected to preceding 2 inputs for selecting 1 switch, preceding 2 select the output of 1 switch directly with
Low-pass filtered circuit is connected to rear 2 inputs for selecting 1 switch, and rear 2 select the output of 1 switch to be connected to feature extraction turns with signal
Change unit；Channel selecting and two 2 select 1 switch to be operated under CPU element control.
3. dykes and dams monitoring of leakage prior-warning device according to claim 1, it is characterised in that：Described feature extraction and signal
Converting unit includes preceding controllable gain amplifier, the optional wave filter group of band logical, rear controllable gain amplifier, A/D converter, preceding
Controllable gain amplifier is connected to the optional wave filter group of band logical after receiving the output signal from signal access unit and amplification
Input, the optional wave filter group of band logical select the dykes and dams monitoring signals of depth to be measured and are connected to rear controllable gain amplifier
Input, depth dykes and dams monitoring signals to be measured are amplified to by rear variable gain amplifier meets A/D converter input requirements
Signal and the input for being connected to A/D converter, the analog signal that A/D converter is inputted are converted into data signal simultaneously
It is transferred to CPU element；The bandpass center frequency of the optional wave filter group of multiplication factor and band logical of forward and backward controllable gain amplifier by
CPU element is adjusted and controlled.
4. dykes and dams monitoring of leakage prior-warning device according to claim 1, it is characterised in that：Described CPU element includes
DSP, CPLD, RAM, ROM, USB interface, clock and reset circuit, clock are connected to DSP, DSP data/address bus with reset circuit
Connect analog/digital conversion circuit, the USB interface chip of CPLD, RAM, ROM, feature extraction and signal conversion unit, CPLD logic
Output is connected to the control input of RAM, ROM, USB interface chip, signal access unit, feature extraction and signal conversion unit
End；By USB interface the Real-time Monitoring Data of the dykes and dams monitoring of leakage prior-warning device can be read or to monitoring and warning in host computer
Parameter is configured.
5. dykes and dams monitoring of leakage prior-warning device according to claim 1, it is characterised in that：The analysis management of the host computer
Software by reading device Real-time Monitoring Data, can qualitative analysis dykes and dams internal structure change situation, quantitatively calculate dykes and dams seepage
The buried depth of water, water amount of seepage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721144871.6U CN207182031U (en) | 2017-09-08 | 2017-09-08 | Dykes and dams monitoring of leakage prior-warning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721144871.6U CN207182031U (en) | 2017-09-08 | 2017-09-08 | Dykes and dams monitoring of leakage prior-warning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207182031U true CN207182031U (en) | 2018-04-03 |
Family
ID=61743195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721144871.6U Expired - Fee Related CN207182031U (en) | 2017-09-08 | 2017-09-08 | Dykes and dams monitoring of leakage prior-warning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207182031U (en) |
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2017
- 2017-09-08 CN CN201721144871.6U patent/CN207182031U/en not_active Expired - Fee Related
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