CN204154907U - The large line apparatus of a kind of distributed parallel electrical method data acquisition - Google Patents
The large line apparatus of a kind of distributed parallel electrical method data acquisition Download PDFInfo
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Abstract
The utility model relates to the large line apparatus of a kind of distributed parallel electrical method data acquisition.The electrode of China's via High-density Resistivity Method system is centralized substantially, and electrode is corresponding with cable, uses the polycore cable of more than 30 cores, and large wire system is complicated, and single survey line command range is limited, and detection accuracy is low, poor reliability.The utility model comprise by communication network be connected host computer and down-hole launch with main control system gather cable in addition, cable adopts five cores, launch cable for two, a common ground, two twisted-pair feeders, are mounted with the electrode of same configuration, are respectively emitting electrode A, emitting electrode B, common ground electrode M, N and potential difference (PD) acquisition electrode; There is terminator twisted-pair feeder one end.The utility model cable core number is few, uses reliable, easy to maintenance, electrode has data acquisition function, and each electrode structure is identical, is switched use by internal circuit, can again can as receiving electrode as transmitting electrode, can be energized registration automatically, numbering, without the need to manual debugging.
Description
Technical field
The utility model belongs to colliery D.C. method technical field, is specifically related to the large line apparatus of a kind of distributed parallel electrical method data acquisition.
Background technology
Resistivity prospecting is the electro permanent magnetic difference according to existing between different rock-layers, between rock and ore in the earth's crust, observe artificial or natural electric field, magnetic distribution, according to electric field, electromagnetic field Changing Pattern geologize structure, with a kind of geophysical exploration method solving Practical Project problem.
The domestic mining electrical survey (-ing) system of China is divided into centralized and distributed two kinds.
All electrodes of centralized electrical survey (-ing) system are all direct to be connected with electrode converter interface, sends control signal by CPU, controls to launch and gather by interface circuit.This design answers a core wire due to each electrode pair, and advantage is that sequential control is simple, and shortcoming is that electrode sum is too much unsuitable because polycore cable deadweight is comparatively large.
Develop on the basis of Changchun Geology Colledge's achievement in research in 1991 more than distributed, distribution cable adopts 9 core ~ 10 core cables.
The electrode of via High-density Resistivity Method system belongs to centralized substantially, is changed or measures main frame concentrate by electrode.Electrode is corresponding with cable, usually uses the polycore cable of more than 30 cores to be connected with main frame or switch.In recent years, high density DC electrical method adopts Control electrode, realizes electrode function conversion, achieves multi-method automatic Observation.But there is large wire system complexity (7 cores to tens even hundred core cables), the problems such as single survey line command range is limited, detection accuracy is low, poor reliability.
Summary of the invention
The purpose of this utility model is to provide the large line apparatus of a kind of distributed parallel electrical method data acquisition, solves the number of cables existed in prior art many, and cable is from great, and solve the large line of resistivity prospecting system complicated, single line is apart from limited problem.
The technical scheme that the utility model adopts is:
The large line apparatus of a kind of distributed parallel electrical method data acquisition, comprise the host computer and down-hole transmitting and main control system that are connected by communication network, and launch with each down-hole the collection cable be connected with main control system, described cable adopts 5 core cables, cable is launched for one as first, cable is launched for one as second, one as common ground, all the other two is that twisted-pair feeder is as chip power supply, the cable of communication, described collection cable is mounted with the electrode assembly of same configuration, cable will be launched with first, the electrode assembly that twisted-pair feeder is connected is as the first emitting electrode device, using launching cable with second, electrode assembly that twisted-pair feeder is connected is as the second emitting electrode device, using the electrode assembly that is connected with common ground, twisted-pair feeder as common ground electrode assembly, other electrode assemblies and first are launched cable, second and are launched cable and isolate, with twisted pair line connection as potential difference (PD) acquisition electrode device, described twisted-pair feeder is provided with terminator.
Described electrode assembly comprises the electrode control circuit be made up of intelligent network transceiver, dual port RAM, arm processor, electrode power supply circuit, crystal oscillator, reset circuit, filter and amplification Acquisition Circuit, electrode commutation circuit and electrode; Described intelligent network transceiver is connected with reset circuit with crystal oscillator respectively; Electrode power supply circuit is provided with between described intelligent network transceiver and twisted-pair feeder; Filter and amplification Acquisition Circuit and electrode commutation circuit is provided with between described arm processor and electrode.
Described terminator is in series by electric capacity C1, resistance R1 and electric capacity C2; When free topology state, the resistance of resistance R1 is 52.3 Ω ± 1%, and rated power is 1/8W, and the capacitance of electric capacity C1 and electric capacity C2 is 100 μ F, and rated voltage is more than or equal to 50V; When bus topology state, the resistance of resistance R1 is 105 Ω ± 1%, and rated power is 1/8W, and the capacitance of electric capacity C1 and electric capacity C2 is 100 μ F, and rated voltage is more than or equal to 50V.
Described electrode power supply circuit adopts chain circuit power supply technology, be provided with between the power module front end and twisted-pair feeder of intelligent node make signal not by, only allow the low-pass filter that electric current passes through; Be provided with in the processor signal input end front end of intelligent node and stop passing through of electric current, can only by the Hi-pass filter of data-signal; During power supply; signal is first by low-pass filter, and the electric current after filtration is through bridge rectifier filter circuit, then the reduction voltage circuit through being made up of triode Q1; the short-circuit protection circuit be made up of triode Q2 and Q3, and carry out voltage stabilizing by the mu balanced circuit be made up of stabilivolt D5.
Described filter and amplification Acquisition Circuit comprises enlarge leadingly Acquisition Circuit, double T 50Hz trapper, 6 rank low pass 15Hz wave filters, preposition isolating amplifier circuit and AD Acquisition Circuit; The pre-amplification circuit of the signal collected by electrode first through being made up of INA333, through the double T 50Hz trapper of amplifying signal again by being made up of OPA2734, through the low-pass filter of signal again by being made up of OPA2734 that trapper filtering 50Hz disturbs, filtering high frequency interference, the then preposition isolating amplifier circuit of signal by being made up of OPA734, through the filtering circuit of voltage signal again by being made up of OPA163 amplified, then the A/D converter be made up of AD7767 converts voltage pulse signal to, is sent in ARM microcontroller by SPI serial ports.
Described electrode commutation circuit is made up of single-chip microcomputer and 8 passage high voltage analog switch HV20220.
The beneficial effects of the utility model are:
(1) gather large line and adopt 5 core cable design, compare with the large line of existing mine electrical method data acquisition, cable core number is few, uses more reliable, easy to maintenance.
(2) gather intelligent electrode that large line is with and have data acquisition function, existing most of mine electric method instrument institute belt electrode is without this function.
(3) structure of each intelligent electrode is identical, switches use by internal circuit, makes it can again can as receiving electrode as transmitting electrode.
(4) intelligent electrode can after being connected to the large line of collection, and energising is registered automatically, automatic numbering, without the need to manual debugging.
Accompanying drawing explanation
Fig. 1 is system schematic
Fig. 2 is cable designs figure
Fig. 3 is intelligent electrode design drawing
Fig. 4 is that large line and Electrode connection switch schematic diagram
Fig. 5 is intelligent electrode feed circuit
Fig. 6 is that electrode switches control
Fig. 7 is pre-amplification circuit and double T 50Hz notch filter circuit
Fig. 8 is 6 rank low pass 15Hz filter circuits
Fig. 9 is the preposition isolating amplifier circuit of MN
Figure 10 is that MN detects AD Acquisition Circuit
Figure 11 is that large line terminator design drawing and circuit design device model design parameter arrange table
In figure, 1 is host computer, 2 is communication network, 3 for launching and main control system down-hole, 4 is distributed electrode device, and 5 for gathering cable, and 6 is intelligent network transceiver, 7 is crystal oscillator, 8 is reset circuit, and 9 is dual port RAM, and 10 is arm processor, 11 is filter and amplification Acquisition Circuit, 12 is electrode commutation circuit, and 13 is electrode, and A is the first emitting electrode device, B is the second emitting electrode device, M, N are common ground electrode assembly, and 501 is the first transmitting cable, 502 be the second transmitting cable, 503 is common ground, 504,505 for twisted-pair feeder.
Embodiment
The large line cable of the design adopts 5 core cables 5, cable 501 is launched for one as first, one as second launch cable 502(also can be used as launch ground wire), one as common ground 503, all the other two twisted-pair feeders are as the cable 504,505 of chip power supply, communication.Large line carry intelligent acquisition electrode assembly 4, each electrode has identical structure, any working electrode device, emitting electrode device A, emitting electrode device B, acquisition electrode device M, acquisition electrode device N can being set to when sampling or leaving unused, power supply anode device A, power supply cathode device B, potential electrode device M and potential electrode device N or idle state can be set to again when powering.Switch electrode assembly state according to D.C. method method, realize mine direct current method exploration data acquisition.The design uses twisted pair line connection equipment network consisting in addition, and network termination device must be used to improve the signal intelligence of network.When free topology structure is connected with bus structure, the design conditions of terminator is different, and large line terminator design drawing and circuit design device model design parameter are arranged as shown in figure 11.
Below in conjunction with the drawings and specific embodiments, the utility model is described in detail.
As shown in Figure 1, this large line apparatus is mainly used in the intelligent multi-electrode electric measuring system adopting distributed cloth pole.Its primary structure by host computer 1, looped network communication line 2, downhole monitoring system 3, gather large line 5 and intelligent electrode device forms 4.Like this, change by the pattern pre-seted, realize distributed high-density electric collection.The design's application embedded Control network platform, realize that main frame controls automatically to tens to hundreds of root electrode assembly 4 by a five-core cable 5, data acquisition and data transmission, realize different observation device, automatic Observation that Different electrodes is arranged apart from, different measuring points.
Electrode assembly 4 of the present utility model specifically comprises the electrode control circuit be made up of intelligent network transceiver 6, dual port RAM 9, arm processor 10, electrode power supply circuit, crystal oscillator 7, reset circuit 8, filter and amplification Acquisition Circuit 11, electrode commutation circuit 12 and electrode 13; Intelligent network transceiver 6 is connected with reset circuit 8 with crystal oscillator 7 respectively; Electrode power supply circuit is provided with between intelligent network transceiver 7 and twisted-pair feeder; Filter and amplification Acquisition Circuit 11 and electrode commutation circuit 12 is provided with between arm processor 10 and electrode 13.
In the electrode converting system of the design, each node has identical hardware configuration, although they can only be in any a kind in 5 kinds of states at any time, and any one form in front 4 kinds of states in same system, can not be in together more than 1 electrode.By the break-make of Single-chip Controlling 8 passage high voltage analog switch HV20220 passage, thus make same electrode assembly 4 both can make powered electrode apparatus in the course of the work, potential electrode device can be made again.
The utility model have employed chain circuit power supply technology on electrode power supply, same twisted-pair feeder provides power supply and sends data.Use this technology, the node on network can be made to obtain power supply by communication line, decrease the spending of power lead, the difficulty reducing wiring in addition and safeguard.The design adopts chain circuit power supply technology power to distributed intelligence node and transmit data.In the power module front end of intelligent node in order to isolated data signal, add low-pass filter.This wave filter make signal not by, only allow an electric current to pass through, power to node.Add Hi-pass filter in the processor signal input end front end of intelligent node, stop passing through of electric current, make it to pass through data-signal.Circuit diagram as shown in Figure 5; the bridge circuit of diode D1, D2, D3, D4 composition carries out nonpolarity conversion to the electric current that twisted-pair feeder transmits; then the operating voltage of 3.3 V is provided to distributed electrode processor by the short-circuit protection effect of hypotensive effect T2 and T3 of triode T1 and the pressure stabilization function of stabilivolt D; this circuit is linear power source circuit; output ripple little (below 5mV), electromagnetic interference (EMI) is weak.
Meanwhile, intelligent electrode control section of the present utility model is a kind of LonWorks intelligent node based on H-B structure, and mainly contain the compositions such as FT3150 transceiver, dual port RAM, ARM chip, circuit diagram as shown in the figure.Wherein ARM chip mainly completes electrode switching control function and data sampling and processing, ARM chip add the problem can alleviating Neuron chip internal resource anxiety, the main Neuron3150 chip that uses completes communication function, ensures the smooth and easy of communication.The data processed are sent to the large line of electrode based on Pyxos bus by transceiver by it, also can by the message sink on large for electrode line to this intelligent electrode node.FT3150 chip and ARM chip data sharing district use dual port RAM.Storing data sharing is the maximum feature of dual port RAM.RAM is equipped with two and overlaps independently address, data and control line, allows two independently CPU or controller while storage unit access asynchronously.There is access arbitration control module control data and share in inside.Inner arbitrated logic controls to provide following functions: the sequential control of accessing same address location; The access rights of memory cell data block are distributed; Signaling exchange logic (such as look-at-me) etc.The same storage unit of dual port RAM respectively has an address for FT3150 and ARM chip, and two systems just can carry out accessing operation to it.
In addition, due in resistivity prospecting, 50Hz and harmonic wave thereof are interference source, and geophysical prospecting equipment generally adopts trapper to suppress power frequency signal disturbing.But subsurface environment is complicated and changeable, general trapper cannot play due effect.In order to suppress outside and inner electromagnetic interference (EMI), the design adopts 50Hz double T trapper to suppress Hz noise.Trapper also claims rejection filter, and Main Function is the signal of a certain frequency suppressed in input signal, does not affect the input of other signals simultaneously.Be specially adapted to the application during undesired signal of a certain characteristic frequency of filtering.MN signal enters the pre-amplification circuit that instrument amplifier INA333 forms, then by the double T 50Hz trapper that OPA2734 is formed, and filtering 50Hz Hz noise (Fig. 7).Signal, by after double T 50Hz trapper, enters the low-pass filter be made up of OPA734 and OPA2734, filtering high frequency interference (Fig. 8).
Gather voltage signal and enter enlarge leadingly and filtering circuit by acquisition electrode device, then convert voltage pulse signal to by A/D converter, sent in ARM microcontroller by SPI serial ports.The Acquisition Circuit composition that acquisition module is formed primarily of AD7767.
Five cores of large line 5 are all connected on each distributed electrode device 4 by the multiple distributed electrode device 4 of carry as required on the large line 5 that the utility model uses.Switch the state of electrode assembly 4 according to D.C. method method, make electrode assembly 4 be in one in five kinds of states.
When carrying out symmetrical four-pole sounding, by electrode assembly 4 by electrode commutation circuit 12, 501 conductings are launched on cable as the first emitting electrode device A at large line and first, electrode assembly 4 is launched cable 502 conducting as the second emitting electrode device B by second of electrode commutation circuit and large line, by electrode M, be communicated with as receiving electrode device by common ground between N, other electrode assemblies on large line and cable 501, 502, 503 isolation, only powered by 504 and 505 and transmit data, electrode 13 gathers potential difference (PD) aftertreatment and storage, use the electrode on large line to complete symmetrical four-pole sounding operation successively according to the electrode switching mode preset.
Claims (6)
1. the large line apparatus of distributed parallel electrical method data acquisition, comprise the host computer (1) and down-hole transmitting and main control system (3) that are connected by communication network (2), and launch with each down-hole the collection cable (5) be connected with main control system (3), it is characterized in that:
Described cable (5) adopts five-core cable, launch cable (501) as first for one, launch cable (502) as second for one, one as common ground (503), all the other two is that twisted-pair feeder (504), (505) are as the cable of chip power supply, communication
Described collection cable (5) is mounted with the electrode assembly (4) of same configuration,
Using launching cable with first, electrode assembly that twisted-pair feeder is connected is as the first emitting electrode device A;
Using launching cable with second, electrode assembly that twisted-pair feeder is connected is as the second emitting electrode device B;
Using the electrode assembly that is connected with common ground, twisted-pair feeder as common ground electrode assembly M, N;
Other electrode assemblies and first are launched cable, second and are launched cable and isolate, with twisted pair line connection as potential difference (PD) acquisition electrode device;
Described twisted-pair feeder (504), (505) one end are provided with terminator.
2. the large line apparatus of a kind of distributed parallel electrical method according to claim 1 data acquisition,
It is characterized in that:
Described electrode assembly (4) comprises the electrode control circuit be made up of intelligent network transceiver (6), dual port RAM (9), arm processor (10), electrode power supply circuit, crystal oscillator (7), reset circuit (8), filter and amplification Acquisition Circuit (11), electrode commutation circuit (12) and electrode (13);
Described intelligent network transceiver (6) is connected with reset circuit (8) with crystal oscillator (7) respectively;
Electrode power supply circuit is provided with between described intelligent network transceiver (7) and twisted-pair feeder;
Filter and amplification Acquisition Circuit (11) and electrode commutation circuit (12) is provided with between described arm processor (10) and electrode (13).
3. the large line apparatus of a kind of distributed parallel electrical method according to claim 1 data acquisition,
It is characterized in that:
Described terminator is in series by electric capacity C1, resistance R1 and electric capacity C2;
When free topology state, the resistance of resistance R1 is 52.3 Ω ± 1%, and rated power is 1/8W, and the capacitance of electric capacity C1 and electric capacity C2 is 100 μ F, and rated voltage is more than or equal to 50V;
When bus topology state, the resistance of resistance R1 is 105 Ω ± 1%, and rated power is 1/8W, and the capacitance of electric capacity C1 and electric capacity C2 is 100 μ F, and rated voltage is more than or equal to 50V.
4. the large line apparatus of a kind of distributed parallel electrical method according to claim 2 data acquisition, is characterized in that:
Described electrode power supply circuit adopts chain circuit power supply technology, be provided with between the power module front end and twisted-pair feeder of intelligent node make signal not by, only allow the low-pass filter that electric current passes through;
Be provided with in the processor signal input end front end of intelligent node and stop passing through of electric current, can only by the Hi-pass filter of data-signal;
During power supply; signal is first by low-pass filter, and the electric current after filtration is through bridge rectifier filter circuit, then the reduction voltage circuit through being made up of triode Q1; the short-circuit protection circuit be made up of triode Q2 and Q3, and carry out voltage stabilizing by the mu balanced circuit be made up of stabilivolt D5.
5. the large line apparatus of a kind of distributed parallel electrical method according to claim 2 data acquisition, is characterized in that:
Described filter and amplification Acquisition Circuit (11) comprises enlarge leadingly Acquisition Circuit, double T 50Hz trapper, 6 rank low pass 15Hz wave filters, preposition isolating amplifier circuit and AD Acquisition Circuit;
The pre-amplification circuit of the signal collected by electrode first through being made up of INA333,
Through the double T 50Hz trapper of amplifying signal again by being made up of OPA2734,
Through the low-pass filter of signal again by being made up of OPA2734 that trapper filtering 50Hz disturbs, filtering high frequency interference,
The then preposition isolating amplifier circuit of signal by being made up of OPA734,
Through the filtering circuit of voltage signal again by being made up of OPA163 amplified,
Then the A/D converter be made up of AD7767 converts voltage pulse signal to,
Sent in ARM microcontroller by SPI serial ports.
6. the large line apparatus of a kind of distributed parallel electrical method according to claim 2 data acquisition, is characterized in that:
Described electrode commutation circuit (12) is made up of single-chip microcomputer and eight passage high voltage analog switch HV20220.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104767093A (en) * | 2015-03-27 | 2015-07-08 | 中国矿业大学 | Mine direct-current sounding data collecting cable and method |
| CN105549096A (en) * | 2015-12-09 | 2016-05-04 | 重庆地质仪器厂 | Electrode device and measurement system through DC method |
| CN106443794A (en) * | 2016-08-30 | 2017-02-22 | 安徽惠洲地质安全研究院股份有限公司 | Three-dimensional parallel electrical prospecting observation system and geological body exploration method |
| CN106768736A (en) * | 2016-11-24 | 2017-05-31 | 中国科学技术大学 | A kind of subway tunnel monitoring of leakage and early warning system and its method |
-
2014
- 2014-08-20 CN CN201420468687.7U patent/CN204154907U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104767093A (en) * | 2015-03-27 | 2015-07-08 | 中国矿业大学 | Mine direct-current sounding data collecting cable and method |
| CN105549096A (en) * | 2015-12-09 | 2016-05-04 | 重庆地质仪器厂 | Electrode device and measurement system through DC method |
| CN106443794A (en) * | 2016-08-30 | 2017-02-22 | 安徽惠洲地质安全研究院股份有限公司 | Three-dimensional parallel electrical prospecting observation system and geological body exploration method |
| CN106443794B (en) * | 2016-08-30 | 2018-08-28 | 安徽惠洲地质安全研究院股份有限公司 | A kind of three-dimensional electrical method observation system and geologic body method for surveying parallel |
| CN106768736A (en) * | 2016-11-24 | 2017-05-31 | 中国科学技术大学 | A kind of subway tunnel monitoring of leakage and early warning system and its method |
| CN106768736B (en) * | 2016-11-24 | 2018-07-17 | 中国科学技术大学 | A kind of subway tunnel monitoring of leakage and method for early warning |
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