CN203480050U - 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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- CN203480050U CN203480050U CN201320549616.5U CN201320549616U CN203480050U CN 203480050 U CN203480050 U CN 203480050U CN 201320549616 U CN201320549616 U CN 201320549616U CN 203480050 U CN203480050 U CN 203480050U
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- electric battery
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Abstract
The utility model 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, is convenient to carry and high in exploration precision, and facilitates measurement. 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 utility model belongs to geophysical exploration technology field, relates 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, is more and more 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 producing with the underground eddy current that coil or ground-electrode observation are responded to by this pulse electromagnetic field, by being familiar with relevant geological problem to the distributional analysis of the room and time of this secondary field.The structure that down-hole Transient Electromagnetic Apparatus adopts receiver and transmitter to separate conventionally at present, in underground construction, equipment amount is larger, and down-hole labour intensity is larger, affects operating efficiency; And 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, utility model content:
The utility model, in order to solve the weak point in 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 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 adopted in the utility model 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 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, on described electric battery A, be connected with first class of protection circuit, safe secondary protection circuit, voltage transformation module and output module in turn, on described electric battery B, be connected with sample circuit and voltage detecting circuit in turn, on electric battery B, be also connected with transmitting driver module, described transmitting driver module is connected with full-bridge conversion transmitting output module with FPGA control module respectively;
Described control Acquisition Circuit comprises signaling module, is connected with A/D modular converter, data processing module and display module in turn and is connected on described signaling module;
Described control Acquisition Circuit is connected by FPGA control module with 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 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 advantage and the effect that the utlity model has are as follows:
1. the utility model adopts transmitting and receives integrated structural design, by control Acquisition Circuit, sending strict clock signal controls power supply radiating circuit simultaneously and controls Acquisition Circuit, thereby realize main frame transmitting and strict the synchronizeing receiving, in instrument internal, realized automatic sequential control, improved operating efficiency, and can greatly reduce underground construction equipment amount, be convenient for carrying;
2. the utility model patent has effectively improved up to the sampling rate of 2 MHz the sensitivity that gathers secondary field signal, has strengthened the acquisition capacity to feeble signal details, and the processing of being convenient to later stage data is explained, has effectively improved detection accuracy;
3. the utility model main frame electric quantity display function makes no matter workmen is under the state of start or shutdown, all can check at any time main frame electric weight, can effectively hold the engineering time of down-hole, improves underground construction efficiency;
It is little that 14. the utility model adopt the structure of miniaturization to have weight, 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 utility model;
Fig. 2 is the side view of Fig. 1;
Fig. 3 is principle schematic of the present utility model;
Fig. 4 is power supply radiating circuit principle schematic;
Fig. 5 is for controlling 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-transmitting driver module, 18-full-bridge conversion transmitting 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 utility model is elaborated:
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 ABS engineering plastics, has fire-resistant antistatic function.
In described housing 1, be provided with support 3, 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 power supply radiating circuit, for host circuit provides intrinsic safety type power supply, to produce power supply transmitting 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 high-performance A/D converter.Controlling Acquisition Circuit can gather battery electric quantity specially, no matter is when main frame opens or cuts out, and can show in real time main frame electric weight.
Described control Acquisition Circuit, to produce the power supply transmitting timing control signal required with controlling Acquisition Circuit, and carries 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, on described electric battery A8, be connected with first class of protection circuit 10, safe secondary protection circuit 11, voltage transformation module 12 and output module 13 in turn, on described electric battery B9, be connected with sample circuit 14 and voltage detecting circuit 15 in turn, on electric battery B9, be also connected with transmitting driver module 17, described transmitting driver module 17 is connected (as Fig. 4) with FPGA control module 16 with full-bridge conversion transmitting 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 in turn and is connected on described signaling module 19; 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, secondary field signal is sent into A/D converter collection, under large scale integrated circuit FPGA control in 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 secondary field signal and gather, after collection completes, FPGA processes and stores data, after data processing completes, enters display interface.
Power supply radiating circuit 5 can be powered to controlling Acquisition Circuit 6; controlling Acquisition Circuit 6 provides transmitting and receives required synchronous sequence signal; and the transmitting 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 bipolar square wave output through full-bridge circuit, and sample circuit is 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 bipolar square wave output through full-bridge circuit, and sample circuit is 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 sampling rate that high-performance A/D converter can be realized the highest 2 MHz gathers, after collection completes, FPGA processes and stores data, after data processing completes, enters display interface.
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, transmitting 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, RCD control circuit can absorb the Kickback voltage of power-off 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 sampling rate that high-performance A/D converter can be realized the highest 2 MHz gathers, 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 AD EOC, data are sent into FPGA by CH1DB bus and are carried out data processing, send into industrial computer and show and store after handling.
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 transmitting to receive integrated structural design, and control Acquisition Circuit and produce the power supply transmitting 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 receiving end incoming frequency, first to the transition instrument main frame input peak-to-peak value of high receiver voltage, with AC signal source, 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, 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 representing 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 low distortion signal generator is 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, in test, selecting signal frequency is 325 Hz (transmitter current frequency is 25 Hz), use is carried out from 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 is as calculated 0.09 %.
Claims (5)
1. a Mine-used I. S Transient Electromagnetic Apparatus main frame, comprise housing (1), it is characterized in that: in described housing (1), be provided with support (3), 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) on, 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) on, be connected with sample circuit (14) and voltage detecting circuit (15) in turn, electric battery B(9) on, be also connected with transmitting driver module (17), described transmitting driver module (17) is connected with full-bridge conversion transmitting 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) in turn and is connected on described signaling module (19);
Described control Acquisition Circuit (6) is connected by FPGA control module (16) with power supply radiating circuit (5).
2. a kind of 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. a kind of 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. a kind of Mine-used I. S Transient Electromagnetic Apparatus main frame according to claim 3, 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 ABS engineering plastics.
5. a kind of Mine-used I. S Transient Electromagnetic Apparatus main frame according to claim 4, 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320549616.5U CN203480050U (en) | 2013-09-05 | 2013-09-05 | Intrinsic safety type transient electromagnetic instrument host for mines |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320549616.5U CN203480050U (en) | 2013-09-05 | 2013-09-05 | Intrinsic safety type transient electromagnetic instrument host for mines |
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| CN203480050U true CN203480050U (en) | 2014-03-12 |
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| CN201320549616.5U Expired - Lifetime CN203480050U (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 |
|---|---|---|---|---|
| CN103454692A (en) * | 2013-09-05 | 2013-12-18 | 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 CN201320549616.5U patent/CN203480050U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103454692A (en) * | 2013-09-05 | 2013-12-18 | 中煤科工集团西安研究院 | Intrinsic safety type transient electromagnetic instrument host for mines |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: XI'AN RESEARCH INSTITUTE OF CHINA COAL TECHNOLOGY Free format text: FORMER NAME: CHINA COAL TECHNOLOGY + ENGINEERING GROUP XI'AN RESEARCH INSTITUTE |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 710075 Xi'an high tech Industrial Development Zone, Shaanxi, Jin Jin Road, No. 82 Patentee after: CCTEG Xi'an Research Institute Address before: 710075 Xi'an high tech Industrial Development Zone, Shaanxi, Jin Jin Road, No. 82 Patentee before: Xi'an Research Institute Of China Coal Research Institute |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140312 |