CN209148882U - Ground surface works survey meter - Google Patents
Ground surface works survey meter Download PDFInfo
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- CN209148882U CN209148882U CN201920120334.0U CN201920120334U CN209148882U CN 209148882 U CN209148882 U CN 209148882U CN 201920120334 U CN201920120334 U CN 201920120334U CN 209148882 U CN209148882 U CN 209148882U
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Abstract
The utility model discloses a kind of ground surface works survey meters, including detection trolley and detection host, detection host input terminal is connected with signal acquisition mechanism, detecting host includes cabinet, controller mainboard and operation panel, outlet and power switch are provided on operation panel, power supply is successively connected through outlet, power switch, controller mainboard with signal acquisition mechanism, and signal acquisition mechanism is the flat capacitor sensor for acquiring natural electric magnetic wave.The ground surface works survey meter of the utility model using the above structure, belongs to detection technologies for underground pipes, can acquire the natural electric magnetic wave for belonging to ultralow frequency range, its amplitude changes in microvolt grade, penetration power is strong, and by passive detection, avoids influence of the working environment to detection result precision.
Description
Technical field
The utility model relates to forward probes before a kind of detection technologies for underground pipes more particularly to surface works construction.
Background technique
With the rapid development of the national economy, urban population has tended to be saturated at present, therefore urban renewal and extension project
Carry out in succession, house and traffic are related to this all in planning construction, during also emerging a large amount of geotechnical engineering construction
The safety problem for needing to solve, therefore in municipal traffic Facilities Construction, engineering geological investigation is most important, it can be handed over to municipal administration
Logical extension project design and construction link provide reliable foundation, avoid unfavorable geologic(al) factor, ensure that municipal traffic extends work
Journey rationally designs.Furthermore it is also related to the problems such as safe construction of municipal works, operation, cost.
It is all active detection that the country is to be applied to prospecting engineering construction early period master at present, such as penetrating antenna, Britain's thunder enlightening
The equipment such as pipeline instrument, earthquake, high-density electric instrument, but these equipment are affected by working environment, i.e., and working environment is not
In field but in noisy city, various electric appliances, cable and various RI radio intelligences etc. influence traditional exploring equipment
It is larger, it is greatly lowered the accuracy rate of exploration results in this way, brings one once the confidence level of data reduces for engineering construction
Fixed security risk；And the upper layer and lower layer pipeline that same position occurs in traditional penetrating antenna, lower layer's pipeline detect substantially
Less than, and investigation depth is smaller, and it is affected by environment larger, if in dry sandy soil or granite, limestone, concrete
Under equal bulk matter detection environment, the penetration depth of traditional penetrating antenna can achieve 15m, but in humidity or contain clay
Soil in, because of high conductivity, sometimes penetration depth only has several meters, is unable to reach the depth of current construction and excavation, and thoroughly
Ground radar can not identify nonmetal pipe line.
Utility model content
The purpose of the utility model is to provide a kind of ground surface works survey meters, can adopt by using flat capacitor sensor
Collection belongs to the natural electric magnetic wave of ultralow frequency range, and amplitude changes in microvolt grade, has penetration power strong, and by passive detection, keeps away
Influence of the working environment to detection result precision is exempted from.
To achieve the above object, the utility model provides a kind of ground surface works survey meter, including detection trolley and setting
Detection host on the detection trolley, the detection host input terminal are connected with signal acquisition mechanism, the detection host
Including cabinet, it is set to the intracorporal controller mainboard of the case and operation panel, is provided with outlet and electricity on the operation panel
Source switch, power supply is successively through the outlet, the power switch, the controller mainboard and signal acquisition mechanism phase
Even, the signal acquisition mechanism is flat capacitor sensor for acquiring natural electric magnetic wave, the signal acquisition mechanism by
Left end signal acquiring board, M signal collection plate, right end signal acquiring board are arranged in "-" type, the left end signal acquisition
Plate and the right end signal acquiring board are connected through the first aviation plug with the M signal collection plate, and the M signal is adopted
Collection plate is connected through the second aviation plug with the controller mainboard.
Preferably, the signal analysis unit and control storage list that two-way is connected in parallel are integrated on the controller mainboard
Member, the signal analysis unit include the amplifying circuit being sequentially connected in series, for filtering out 1600Hz-2100Hz frequency selection circuit and whole
Current circuit, the signal acquisition mechanism are connected with the signal analysis unit input terminal, the signal analysis unit output end warp
A/D conversion circuit is connected with the control storage unit.
Preferably, be respectively used to described in regulation two-way in signal analysis unit described is additionally provided on the operation panel to put
The adjusting knob of big circuit gain.
Preferably, the left end signal acquiring board, right end signal acquiring board described in the M signal collection plate be at least
Including one piece of copper-clad plate unit, the copper-clad plate unit is made of two pieces of copper-clad plates being vertically bonded.
Preferably, the length of the signal acquisition mechanism is 2.8 meters, and signal acquisition mechanism the same side is respectively connected with essence
Beneficial pipe lock, the lean pipe lock are socketed with lean pipe, and the lean pipe is fixedly connected with the detection trolley front end.
Preferably, the utility model further includes the peripheral hardware for being placed in the detection car top, described to be set as notebook electricity outside
Brain is additionally provided with the PORT COM being connected with the peripheral hardware on the operation panel.
Preferably, the frequency selection circuit is made of twin-T network frequency selection circuit.
Therefore, the ground surface works survey meter using the above structure of the utility model, senses by using flat capacitor
Device can acquire the natural electric magnetic wave for belonging to ultralow frequency range, and amplitude changes in microvolt grade, have penetration power strong, and pass through passive spy
It surveys, avoids influence of the working environment to detection result precision.
Below by drawings and examples, the technical solution of the utility model is described in further detail.
Detailed description of the invention
Fig. 1 is a kind of structural block diagram of ground surface works survey meter of the embodiments of the present invention.
Wherein: 1, operation panel；2, signal acquisition mechanism；3, amplifying circuit；4, frequency selection circuit；5, rectification circuit；6, A/D turns
Change circuit；7, storage unit is controlled；8, peripheral hardware.
Specific embodiment
Below with reference to attached drawing, the utility model will be further described, it should be noted that the present embodiment is with this skill
Premised on art scheme, the detailed implementation method and specific operation process are given, but the protection scope of the utility model is not
It is limited to the present embodiment.
Fig. 1 is a kind of structural block diagram of ground surface works survey meter of the embodiments of the present invention, as shown in Figure 1, this is practical
Novel structure detects host input terminal and signal acquisition including detection trolley and the detection host being set on detection trolley
Mechanism 2 is connected, and detection host includes cabinet, controller mainboard arranged in the box body and operation panel 1, is provided on operation panel 1
Outlet and power switch, power supply are successively connected through outlet, power switch, controller mainboard with signal acquisition mechanism 2,
Signal acquisition mechanism 2 is the flat capacitor sensor for acquiring natural electric magnetic wave, it is preferred that signal acquisition mechanism is by left end
Signal acquiring board, M signal collection plate, right end signal acquiring board are arranged in "-" type, left end signal acquiring board and right end
Signal acquiring board is connected through the first aviation plug with M signal collection plate, M signal collection plate through the second aviation plug with
Controller mainboard is connected, wherein left end signal acquiring board, M signal collection plate right end signal acquiring board include at least one piece
Copper-clad plate unit, copper-clad plate unit are made of two pieces of copper-clad plates being vertically bonded, the present embodiment left end signal acquiring board and right end
Signal acquiring board includes three pieces of copper-clad plate units, and M signal collection plate includes four pieces of copper-clad plate units, signal acquisition mechanism
Length be 2.8 meters, signal acquisition mechanism the same side be respectively connected with lean pipe lock, lean pipe lock with lean pipe be socketed, essence
Benefit pipe is fixedly connected with detection trolley front end, is applicable to the biggish working environment of investigative range.Copper-clad plate unit includes vertical
Two pieces of copper-clad plates of bonding, two pieces of copper-clad plates being vertically bonded belong to one group of copper-clad plate unit, are partly coated with outside two pieces of copper-clad plates
Barricade, copper-clad plate outer surface are coated with insulated paint.The signal analysis unit that two-way is connected in parallel is integrated on controller mainboard
With control storage unit 7, signal analysis unit includes the amplifying circuit 3 being sequentially connected in series, for filtering out 1600Hz-2100Hz choosing
Frequency circuit 4 and rectification circuit 5, signal acquisition mechanism 2 are connected with signal analysis unit input terminal, signal analysis unit output end warp
A/D conversion circuit 6 is connected with control storage unit 7, wherein frequency selection circuit 4 is made of twin-T network frequency selection circuit, because of above-mentioned electricity
Property connection type and control principle are general knowledge known in this field, therefore no longer more families repeat herein, are additionally provided on operation panel 1 point
The adjusting knob of 3 gain of amplifying circuit in two paths of signals analytical unit Yong Yu not regulated and controled, be additionally provided on operation panel 1 for adopting
The reset key of set information can acquire the natural electric magnetic wave for belonging to ultralow frequency range, amplitude by using flat capacitor sensor
Change in microvolt grade, have penetration power strong, detection depth capacity is 51 meters, and by passive detection, avoids working environment pair
The influence of detection result precision.
The utility model further includes the peripheral hardware 8 for being placed in detection car top, and peripheral hardware 8 is laptop, is gone back on operation panel 1
It is provided with the PORT COM being connected with peripheral hardware 8.
Working principle are as follows:
Natural electric magnetic wave is mostly derived from high aerial magnetosphere, ionosphere and atmosphere (0-20kHz of frequency range), this part electricity
Magnetic wave reaches earth's surface, and a part is gone back by earth surface reflection again, and a part enters underground, and it is low that the electromagnetic wave into underground defers to the earth
Frequency window cut-off frequency characteristic: f=k ρ/(a+h)2, a part, which encounters different physical property layers, to reflect, and a part continues to underground
Deep is propagated, and for a part by Absorption of Medium, it is exactly this reflected part electromagnetic wave that instrument is received, this frequency range it is natural
Electromagnetic wave belongs to ultralow frequency range, by traditional EM theory, wavelength 100-3000km, and is translated into voltage value, warp
It crossing matheematical equation and is converted into electromagnetic resistance rate value, staff can extract the geological information of underground,
The fundamental formular of foundation is the earth low frequency window formula in physics
The formula show the electromagnetic wave into underground when being reflected back earth's surface by underground a certain depth physical property interface, energy
Decaying is original 0.707 times, if this part electromagnetic wave is received with instrument, using twin-T network circuit, cutoff frequency
Voltage value theory deduction calculating formula is
(2)
In formula
VfiFor the voltage value (V) of a certain cutoff frequency；
γ refers to institute's depth measurement degree geologic body top interface to the reflection coefficient of electromagnetic wave；
σ is body stress value；；
For the apparent resistivity (Ω m) of geologic body in a certain depth；
H is depth (m) where a certain geologic body；
A is a certain additional constant.
A is the half bandwidth of a certain frequency point of instrument monitoring；
B this be the parameter of reaction kit transducer sensitivity；(when being measured using same instrument, this, B two
Parameter is equivalent to a constant in formula)
CiFor a coefficient；
K is constant (9.4 × 105)；
υ is Poisson's ratio；
E is elasticity modulus；
Therefore, the ground surface works survey meter using the above structure of the utility model, senses by using flat capacitor
Device can acquire the natural electric magnetic wave for belonging to ultralow frequency range, and amplitude changes in microvolt grade, have penetration power strong, and pass through passive spy
It surveys, avoids influence of the working environment to detection result precision.
Finally, it should be noted that above embodiments are only to illustrate the technical solution of the utility model rather than limit it
System, although the utility model has been described in detail with reference to the preferred embodiment, those skilled in the art should manage
Solution: it still can be with the technical solution of the present invention is modified or equivalently replaced, and these are modified or equally replace
Changing also cannot make modified technical solution be detached from the spirit and scope of the technical scheme of the present invention.
Claims (7)
1. a kind of ground surface works survey meter, including detection trolley and the detection host being set on the detection trolley, the spy
It surveys host input terminal to be connected with signal acquisition mechanism, it is characterised in that: the detection host includes cabinet, is set to the cabinet
Interior controller mainboard and operation panel are provided with outlet and power switch on the operation panel, and power supply is successively through the electricity
Source socket, the power switch, the controller mainboard are connected with the signal acquisition mechanism, and the signal acquisition mechanism is to use
In the flat capacitor sensor of acquisition natural electric magnetic wave, the signal acquisition mechanism is by left end signal acquiring board, M signal
Collection plate, right end signal acquiring board are arranged in "-" type, the left end signal acquiring board and the right end signal acquiring board
It is connected through the first aviation plug with the M signal collection plate, the M signal collection plate is through the second aviation plug and institute
Controller mainboard is stated to be connected.
2. a kind of ground surface works survey meter according to claim 1, it is characterised in that: be integrated on the controller mainboard
The signal analysis unit and control storage unit that two-way is connected in parallel, the signal analysis unit include the amplification electricity being sequentially connected in series
Road, for filtering out 1600Hz-2100Hz frequency selection circuit and rectification circuit, the signal acquisition mechanism and signal analysis are single
First input terminal is connected, and the signal analysis unit output end is connected through A/D conversion circuit with the control storage unit.
3. a kind of ground surface works survey meter according to claim 2, it is characterised in that: be additionally provided on the operation panel point
The adjusting knob of the amplifying circuit gain in signal analysis unit described in two-way Yong Yu not regulated and controled.
4. a kind of ground surface works survey meter according to claim 1, it is characterised in that: the left end signal acquiring board, institute
It states right end signal acquiring board described in M signal collection plate and includes at least one piece of copper-clad plate unit, the copper-clad plate unit is by hanging down
The two pieces of copper-clad plates composition being directly bonded.
5. a kind of ground surface works survey meter according to claim 1, it is characterised in that: the length of the signal acquisition mechanism
It is 2.8 meters, signal acquisition mechanism the same side is respectively connected with lean pipe lock, and the lean pipe lock is socketed with lean pipe,
The lean pipe is fixedly connected with the detection trolley front end.
6. a kind of ground surface works survey meter according to claim 1, it is characterised in that: further include being placed in the detection trolley
The peripheral hardware at top, it is described to be set as laptop outside, the PORT COM being connected with the peripheral hardware is additionally provided on the operation panel.
7. a kind of ground surface works survey meter according to claim 2, it is characterised in that: the frequency selection circuit is by twin-T network
Frequency selection circuit is constituted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920120334.0U CN209148882U (en) | 2019-01-23 | 2019-01-23 | Ground surface works survey meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920120334.0U CN209148882U (en) | 2019-01-23 | 2019-01-23 | Ground surface works survey meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209148882U true CN209148882U (en) | 2019-07-23 |
Family
ID=67291636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920120334.0U Active CN209148882U (en) | 2019-01-23 | 2019-01-23 | Ground surface works survey meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209148882U (en) |
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2019
- 2019-01-23 CN CN201920120334.0U patent/CN209148882U/en active Active
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