CN103454692A - Intrinsic safety type transient electromagnetic instrument host for mines - Google Patents
Intrinsic safety type transient electromagnetic instrument host for mines Download PDFInfo
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- CN103454692A CN103454692A CN2013103991478A CN201310399147A CN103454692A CN 103454692 A CN103454692 A CN 103454692A CN 2013103991478 A CN2013103991478 A CN 2013103991478A CN 201310399147 A CN201310399147 A CN 201310399147A CN 103454692 A CN103454692 A CN 103454692A
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Abstract
The invention belongs to the technical field of geophysical exploration and particularly relates to an intrinsic safety type transient electromagnetic instrument host for mines. The intrinsic safety type transient electromagnetic instrument host for mines has an independent function of displaying electric quantity at any time, can meet the requirement for safety production of mines and is convenient to measure and carry and high in exploration precision. According to the technical scheme, the intrinsic safety type transient electromagnetic instrument host for mines comprises a shell and is characterized in that a support is arranged in the shell and divides the shell into an upper layer and a lower layer, the upper layer is provided with an instrument panel, the lower layer is provided with a battery pack, a power emission circuit and a control and collecting circuit, the battery pack is connected with the power emission circuit, and the upper end face of the instrument panel is provided with a nixie tube.
Description
One, technical field:
The invention belongs to the geophysical exploration technology field, relate to a kind of Mine-used I. S Transient Electromagnetic Apparatus main frame.
Two, background technology:
At present, along with the continuous increase of the coal mining degree of depth, the forward probe of water-bearing structure is significant to Safety of Coal Mine Production.Transient electromagnetic method, as one of the most effective water-bearing structure detection method, more and more is subject to coal mine hydrogeology worker's attention.Transient electromagnetic method (Transient Electromagnetic Methods, be called for short TEM) be to utilize earth-free loop line or ground-electrode to electromagnetic field of underground transmitted formula, the secondary electromagnetic field that the underground eddy current of being responded to by this pulse electromagnetic field with coil or ground-electrode observation produces, be familiar with relevant geological problem by the distributional analysis of the room and time to this secondary field.The structure that the down-hole Transient Electromagnetic Apparatus adopts receiver and transmitter to separate usually at present, in underground construction, equipment amount is larger, and down-hole labour intensity is larger, affects operating efficiency; And the down-hole Transient Electromagnetic Apparatus adopts 100 kHz sampling rates at present mostly, and the details of signal is differentiated not; The electric quantity display function of down-hole Transient Electromagnetic Apparatus all needs the operation of instrument being carried out to start and close just can check afterwards at present simultaneously, and this process required time is longer.
Three, summary of the invention:
The present invention, in order to solve the weak point in the above-mentioned background technology, provides a kind of Mine-used I. S Transient Electromagnetic Apparatus main frame, and it has independently electric quantity display function at any time, meets the Safety of Coal Mine Production requirement, and it is convenient to measure, and is easy to carry, and detection accuracy is high.
For achieving the above object, the technical solution used in the present invention is: a kind of Mine-used I. S Transient Electromagnetic Apparatus main frame, comprise housing, it is characterized in that: in described housing, be provided with support, support is divided into housing two-layer up and down, and upper strata is provided with instrument panel, and lower floor is provided with electric battery, power supply radiating circuit and controls Acquisition Circuit, described electric battery is connected with the power supply radiating circuit, and described instrument panel upper surface is provided with charactron;
Described power supply radiating circuit comprises electric battery A and electric battery B, be connected with first class of protection circuit, safe secondary protection circuit, voltage transformation module and output module on described electric battery A in turn, be connected with sample circuit and voltage detecting circuit on described electric battery B in turn, also be connected with the emission driver module on electric battery B, described emission driver module is connected with full-bridge conversion emission output module with the FPGA control module respectively;
Described control Acquisition Circuit comprises signaling module, is connected with A/D modular converter, data processing module and display module on described signaling module in turn and is connected;
Described control Acquisition Circuit is connected by the FPGA control module with the power supply radiating circuit.
The material of described instrument panel is for adopting stainless steel.
The material of described support is for adopting aluminum material.
Described housing is hollow rectangular parallelepiped, and length is 417 mm, and wide is 310 mm, and height is 187 mm, and material is the ABS engineering plastics.
Described electric battery is two group of 7.2 V Ni-MH battery, and maximum short circuit current is 3 A.
Compared with prior art, the present invention has advantage and effect are as follows:
1. the present invention adopts emission and receives integrated structural design, sending strict clock signal by the control Acquisition Circuit controls the power supply radiating circuit simultaneously and controls Acquisition Circuit, thereby realize main frame emission and strict the synchronizeing received, realized automatic sequential control in instrument internal, improved operating efficiency, and can greatly reduce the underground construction equipment amount, be convenient for carrying;
2. patent of the present invention has effectively improved up to the sampling rate of 2 MHz the sensitivity that gathers the secondary field signal, has strengthened the acquisition capacity to the feeble signal details, and the processing of being convenient to the later stage data is explained, has effectively improved detection accuracy;
3. main frame electric quantity display function of the present invention makes no matter the workmen is under the state of start or shutdown, all can check at any time the main frame electric weight, can effectively hold the engineering time of down-hole, improves underground construction efficiency;
4. to adopt the structure of miniaturization to have weight little in the present invention, is convenient for carrying, and can effectively improve the work efficiency of underground construction.
Four, accompanying drawing explanation:
Fig. 1 is structural representation of the present invention;
The side view that Fig. 2 is Fig. 1;
Fig. 3 is principle schematic of the present invention;
Fig. 4 is power supply radiating circuit principle schematic;
Fig. 5 is for controlling the Acquisition Circuit principle schematic;
Fig. 6 is power supply radiating circuit figure;
Fig. 7 is for controlling Acquisition Circuit figure.
Reference numeral: 1-housing, 2-instrument panel, 3-support; 4-electric battery, 5-power supply radiating circuit, 6-control Acquisition Circuit; 7-charactron; 8-electric battery A, 9-electric battery B, 10-first class of protection circuit; 11-safe secondary protection circuit; 12-voltage transformation module, 13-output module, 14-sample circuit; 15-voltage detecting circuit; 16-FPGA control module, 17-emission driver module, 18-full-bridge conversion emission output module; 19-signaling module; 20-A/D modular converter, 21-display module, 22-data processing module.
Five, embodiment:
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail:
Referring to Fig. 1 and Fig. 2: a kind of Mine-used I. S Transient Electromagnetic Apparatus main frame, comprise housing 1, housing 1 is hollow rectangular parallelepiped, and length is 417 mm, and wide is 310 mm, and height is 187 mm, material is the ABS engineering plastics, has the fire-resistant antistatic function.
Be provided with support 3 in described housing 1, support 3 is divided into housing two-layer up and down, upper strata is provided with instrument panel 2, in order to carry out man-machine interaction, lower floor is provided with electric battery 4, power supply radiating circuit 5 and controls Acquisition Circuit 6, and described electric battery 4 is connected with power supply radiating circuit 5, described electric battery connects the power supply radiating circuit, for host circuit provides the intrinsic safety type power supply, to produce the power supply emission and to control the Acquisition Circuit required power supply that works, and produce required the transmitting of transmitting coil.Adopt large scale integrated circuit FPGA to control the high sampling rate that can realize 2 MHz with the high-performance A/D converter.Controlling Acquisition Circuit can be gathered battery electric quantity specially, no matter is when main frame opens or cuts out, and can show in real time the main frame electric weight.
Described control Acquisition Circuit, to produce the power supply emission timing control signal required with controlling Acquisition Circuit, and carry out overlap-add procedure to gathering the data of returning, and described instrument panel 2 upper surfaces are provided with charactron 7.
The material of described instrument panel 2 is for adopting stainless steel.
The material of described support 3 is for adopting aluminum material.
Described electric battery 4 is two groups of 7.2V Ni-MH batteries, by power supply radiating circuit 5, provides 5V, 6.5V, 30V voltage, and maximum short circuit current is 3 A.
Described power supply radiating circuit 5 comprises electric battery A8 and electric battery B9, be connected with first class of protection circuit 10, safe secondary protection circuit 11, voltage transformation module 12 and output module 13 on described electric battery A8 in turn, be connected with sample circuit 14 and voltage detecting circuit 15 on described electric battery B9 in turn, also be connected with emission driver module 17 on electric battery B9, described emission driver module 17 is connected (as Fig. 4) with FPGA control module 16 with full-bridge conversion emission output module 18 respectively;
Described control Acquisition Circuit 6 comprises signaling module 19, is connected with A/D modular converter 20, data processing module 22 and display module 21 on described signaling module 19 in turn and is connected; Described control Acquisition Circuit 6 and power supply radiating circuit 5 are by FPGA control module 16 be connected (as Fig. 5).
As shown in Figure 3, the secondary field signal is sent into A/D converter gathered, under large scale integrated circuit FPGA control on control Acquisition Circuit 6 and the synergy of high-performance A/D converter, control Acquisition Circuit 6 can be up to 2 MHz sampling rates to the secondary field signal and be gathered, after collection completes, FPGA is processed and is stored data, and data enter display interface after finishing dealing with.
Power supply radiating circuit 5 can be powered to controlling Acquisition Circuit 6; controlling Acquisition Circuit 6 provides emission and receives required synchronous sequence signal; and the emission of controlling power supply radiating circuit 5 is exported; power supply radiating circuit 5 adopts two Battery pack groups; electric battery 1 is exported intrinsic safety electric source after dual-electrode protecting circuit and voltage conversion circuit; electric battery 2, under the control of FPGA, realizes that through full-bridge circuit bipolar square wave output, sample circuit are used for Real-Time Monitoring electric battery level.
Referring to Fig. 4: power supply radiating circuit 5 adopts two Battery pack groups; electric battery 1 is exported intrinsic safety electric source after dual-electrode protecting circuit and voltage conversion circuit; electric battery 2, under the control of FPGA, realizes that through full-bridge circuit bipolar square wave output, sample circuit are used for Real-Time Monitoring electric battery level.
Referring to Fig. 5: control Acquisition Circuit 6 and adopt large scale integrated circuit FPGA to control, the high-performance A/D converter can realize that the sampling rate of the highest 2 MHz is gathered, after collection completes, FPGA is processed and is stored data, and data enter display interface after finishing dealing with.
At first control signal referring to Fig. 6: FPGA enters NAND gate circuit U42, control signal is stablized, prevent reversal of poles, send into afterwards driver for isolating, emission output and control section are isolated, through transistor drive circuit Q43, Q44, Q45 and Q46, output bridge road is controlled, make H bridge circuit Q47, Q48, Q49 and Q50 output bipolar square wave, the RCD control circuit can absorb the Kickback voltage of outage moment generation, thereby reduces the power-off time of bipolar square wave.
Referring to Fig. 7: receiving circuit adopts high-precision adc chip AD7760 to add that preposition squelch circuit forms.The high-performance A/D converter can realize that the sampling rate of the highest 2 MHz is gathered, R103, R104, C103, C101, R101, R102, C102, R105, R106 form preposition squelch circuit, the stable AD signal before that enters reduces noise, U103 electric pressure converter ADR324, C100, R130, R117, C111, C146 form the reference voltage base circuit of AD7760 jointly, after the AD EOC, data are sent into FPGA by the CH1DB bus and are carried out the data processing, send into industrial computer after handling and are shown and store.
Display is connected with control Acquisition Circuit 6, can show in real time image data.
Through experimental test, new type mining intrinsic safety type Transient Electromagnetic Apparatus main frame of the present invention has higher dynamic range (being not less than 130dB), owing to adopting emission to receive integrated structural design, and control Acquisition Circuit and produce the power supply emission timing control signal required with controlling Acquisition Circuit, so the duplicate measurements error of main frame is not more than 0.1 %.
Transient Electromagnetic Apparatus main frame dynamic range method of testing: be 325 Hz sinusoidal signals in the receiving end incoming frequency, at first to the transition instrument main frame input peak-to-peak value of high receiver voltage, input again the peak-to-peak value (minimum receiver voltage is the distortionless minimum amplitude that transition instrument main frame can show) of minimum receiver voltage with the AC signal source, it is 1000 times that stacking fold is set, and dynamic range is pressed formula D (dB)=20log (V
max/ V
min) calculate, wherein D (dB) is the dynamic range meaned with decibel; V
maxmaximum voltage amplitude for the reception of transition instrument main frame; V
min isthe minimum voltage amplitude that transition instrument main frame can be identified.Test result is V
max=5V, V
min=1uV, as calculated, dynamic range is 133 dB.
The duplicate measurements error testing of main frame, using the low distortion signal generator is the transmitter current frequency with differential output to receiving input end input (2n+1) F(F) sinusoidal signal, acquisition system (main frame) should be able to correctly be recovered its waveform, selecting signal frequency in test is 325 Hz (the transmitter current frequency is 25 Hz), use is carried out from the test test software programs, measure 5 times, and record data, when being input as 1 mV, be that test result is 1680011mV, 1679515mV, 1679370mV, 1681409mV, 1681268mV.Duplicate measurements error as calculated is 0.09 %.
Claims (5)
1. a Mine-used I. S Transient Electromagnetic Apparatus main frame, comprise housing (1), it is characterized in that: be provided with support (3) in described housing (1), support (3) is divided into housing two-layer up and down, upper strata is provided with instrument panel (2), lower floor is provided with electric battery (4), power supply radiating circuit (5) and controls Acquisition Circuit (6), and described electric battery (4) is connected with power supply radiating circuit (5), and described instrument panel (2) upper surface is provided with charactron (7);
Described power supply radiating circuit (5) comprises electric battery A(8) and electric battery B(9), described electric battery A(8) be connected with first class of protection circuit (10) in turn, safe secondary protection circuit (11), voltage transformation module (12) and output module (13), described electric battery B(9) be connected with sample circuit (14) and voltage detecting circuit (15) in turn, electric battery B(9) also be connected with emission driver module (17) on, described emission driver module (17) is connected with full-bridge conversion emission output module (18) with FPGA control module (16) respectively,
Described control Acquisition Circuit (6) comprises signaling module (19), is connected with A/D modular converter (20), data processing module (22) and display module (21) on described signaling module (19) in turn and is connected;
Described control Acquisition Circuit (6) is connected by FPGA control module (16) with power supply radiating circuit (5).
2. Mine-used I. S Transient Electromagnetic Apparatus main frame according to claim 1 is characterized in that: the material of described instrument panel (2) is for adopting stainless steel.
3. Mine-used I. S Transient Electromagnetic Apparatus main frame according to claim 1 and 2 is characterized in that: the material of described support (3) is for adopting aluminum material.
4. Mine-used I. S Transient Electromagnetic Apparatus main frame according to claim 3, it is characterized in that: described housing (1) is hollow rectangular parallelepiped, and length is 417 mm, and wide is 310 mm, and height is 187 mm, and material is the ABS engineering plastics.
5. Mine-used I. S Transient Electromagnetic Apparatus main frame according to claim 4, it is characterized in that: described electric battery is two group of 7.2 V Ni-MH battery, and maximum short circuit current is 3 A.
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| CN2013103991478A CN103454692A (en) | 2013-09-05 | 2013-09-05 | Intrinsic safety type transient electromagnetic instrument host for mines |
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| CN2013103991478A CN103454692A (en) | 2013-09-05 | 2013-09-05 | Intrinsic safety type transient electromagnetic instrument host for mines |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111434887A (en) * | 2018-12-25 | 2020-07-21 | 天津大学青岛海洋技术研究院 | Coaxial one-transmitting eight-receiving transient electromagnetic exploration logging instrument |
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| CN1773311A (en) * | 2005-11-14 | 2006-05-17 | 吉林大学 | Shallow sea transient electromagnetic detection emitter |
| CN102087369A (en) * | 2010-12-20 | 2011-06-08 | 煤炭科学研究总院西安研究院 | Underground digital direct current electrical method meter |
| CN102801291A (en) * | 2012-08-17 | 2012-11-28 | 中煤科工集团西安研究院 | Multiplex power supply device of electric method meter for mine |
| CN202798170U (en) * | 2012-07-31 | 2013-03-13 | 中国科学院地质与地球物理研究所 | Transient electromagnetic emission apparatus and transient electromagnetic emission system |
| CN202794558U (en) * | 2012-09-07 | 2013-03-13 | 飞翼股份有限公司 | Mining intrinsic safety type transient electromagnetic instrument |
| CN202870310U (en) * | 2012-10-25 | 2013-04-10 | 飞翼股份有限公司 | Signal acquisition circuit suitable for intrinsically safe transient electromagnetic instrument |
| CN203480050U (en) * | 2013-09-05 | 2014-03-12 | 中煤科工集团西安研究院 | Intrinsic safety type transient electromagnetic instrument host for mines |
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2013
- 2013-09-05 CN CN2013103991478A patent/CN103454692A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1773311A (en) * | 2005-11-14 | 2006-05-17 | 吉林大学 | Shallow sea transient electromagnetic detection emitter |
| CN102087369A (en) * | 2010-12-20 | 2011-06-08 | 煤炭科学研究总院西安研究院 | Underground digital direct current electrical method meter |
| CN202798170U (en) * | 2012-07-31 | 2013-03-13 | 中国科学院地质与地球物理研究所 | Transient electromagnetic emission apparatus and transient electromagnetic emission system |
| CN102801291A (en) * | 2012-08-17 | 2012-11-28 | 中煤科工集团西安研究院 | Multiplex power supply device of electric method meter for mine |
| CN202794558U (en) * | 2012-09-07 | 2013-03-13 | 飞翼股份有限公司 | Mining intrinsic safety type transient electromagnetic instrument |
| CN202870310U (en) * | 2012-10-25 | 2013-04-10 | 飞翼股份有限公司 | Signal acquisition circuit suitable for intrinsically safe transient electromagnetic instrument |
| CN203480050U (en) * | 2013-09-05 | 2014-03-12 | 中煤科工集团西安研究院 | Intrinsic safety type transient electromagnetic instrument host for mines |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111434887A (en) * | 2018-12-25 | 2020-07-21 | 天津大学青岛海洋技术研究院 | Coaxial one-transmitting eight-receiving transient electromagnetic exploration logging instrument |
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Address after: 710075 Xi'an high tech Industrial Development Zone, Shaanxi, Jin Jin Road, No. 82 Applicant after: Xi'an Research Institute, CCTEG Address before: 710075 Xi'an high tech Industrial Development Zone, Shaanxi, Jin Jin Road, No. 82 Applicant before: China Coal Technology & Engineering Group Xi'an Research Institute |
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Application publication date: 20131218 |