CN204188816U - A kind of multifunction mine electrical method forward probe signal transmitter - Google Patents
A kind of multifunction mine electrical method forward probe signal transmitter Download PDFInfo
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- CN204188816U CN204188816U CN201420683684.5U CN201420683684U CN204188816U CN 204188816 U CN204188816 U CN 204188816U CN 201420683684 U CN201420683684 U CN 201420683684U CN 204188816 U CN204188816 U CN 204188816U
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Abstract
The utility model discloses a kind of multifunction mine electrical method forward probe signal transmitter, it is characterized in that, can send the adjustable continuous-current excitation signal of strength of current single channel, single-frequency square wave excitation signal and multifrequency modulated square wave pumping signal.Rectifier boost and constant current circuit for regulating and controlling all adopt Switching Power Supply principle, not only increase the efficiency of transmitter, and add the stability of current constant control.The utility model can meet the multiple electrical method forward probes such as mine direct current resistance rate method, DC lasering electric method and double-frequency induced polarization method to the requirement of pumping signal.
Description
Technical field
The present invention relates to a kind of coal road and combine pick forward probe instrument, belong to applied geophysics electrical method advanced detection technology, particularly relate to a kind of multifunction mine electrical method forward probe signal transmitter.
Technical background
Rich coal resources in China, the feature of hydrocarbon resources relative scarcity, determines the critical role of coal industry.Within the period quite grown future, coal will be the main basic energy resource of China.But China is one of country that coal mine flood is the most serious in the world.Huge loss will be caused to lives and properties once there is water damage in colliery." mine geological hazards regulation " is pointed out, must follow the 16 word principles of " prediction has pick to visit, first visits and dig afterwards, first controls and adopt afterwards " in tunneling process.In 16 word principles, " prediction " is operated in first place, and visible prediction work is the most important thing of preventing and treating coal mine flood.
Pick advanced detection technology combined by existing coal road electrical method, reflective wave method and probing method, and wherein electrical method is divided into again mine direct current resistance rate method, DC lasering electric method, double-frequency induced polarization method and transient electromagnetic method etc.In order to improve detection accuracy, the development trend that pick electrical method forward probe combined by coal road is multiple detection method integrated application, and this just needs variety encourages signal.The pumping signal kind that existing signal transmitter sends is single, when utilizing multiple detection method to carry out forward probe, needing to change different signal transmitters, not only increasing workload, and reduce detection efficiency.
Summary of the invention
The object of the invention is to, provide a kind of coal road that can send continuous-current excitation signal, single frequency excitation signal and double frequency modulation pumping signal on request to combine pick forward probe pumping signal transmitter.
The present invention is achieved by the following technical solutions: a kind of multifunction mine electrical method forward probe signal transmitter, it is made up of prime Single Chip Microcomputer (SCM) system and rear class output system.
Described prime Single Chip Microcomputer (SCM) system, is made up of display, keyboard, microprocessor, communication module, A/D and D/A modular converter.It is characterized in that, keyboard and display form human-computer interaction interface; Microprocessor connects each module and carries out corresponding data processing; A/D conversion is connected a microprocessor for discriminating digit signal with D/A modular converter, and can only identify the rear class output system of simulating signal; Communication module mainly carries out communication with host computer.
Described rear class output system, isolates Voltage stabilizing module, current stabilization module, inversion module and isolation drive module by auxiliary power module, rectification and connects to form in turn.It is characterized in that, auxiliary power module provides corresponding working power for other each modules; Rectification isolation Voltage stabilizing module utilizes power switch pipe to control high-frequency converter, underground coal mine 127V alternating current is converted to the direct voltage source of isolation; Direct voltage source converts to by current stabilization module stablizes adjustable constant current source; Constant current to be become the output as transmitter of different pumping signal by the requirement of isolation drive module by inversion module;
The full-bridge inverting that described inversion module is made up of four metal-oxide-semiconductors, is characterized in that, utilizes different Control timing sequence to control the switching sequence of four metal-oxide-semiconductors to control kind and the frequency of transmitter output signal.
Above-mentioned explanation is only the general introduction of technical solution of the present invention, in order to better understand technological means of the present invention, and can be implemented according to the content of instructions, be below preferred embodiment of the present invention, and coordinate accompanying drawing to be described in detail as follows.
The specific embodiment of the present invention is provided in detail by following examples and accompanying drawing thereof.
Accompanying drawing explanation
Fig. 1 is present system structured flowchart.
Fig. 2 is the circuit theory diagrams of rectification of the present invention isolation Voltage stabilizing module.
Fig. 3 is the circuit theory diagrams of constant flow module of the present invention.
Fig. 4 is the circuit theory diagrams of modulation signal isolation drive module of the present invention.
Fig. 5 is full-bridge inverting schematic diagram of the present invention.
Fig. 6 is the Control timing sequence schematic diagram that the present invention sends double frequency modulation square-wave signal.
Fig. 7 is the Control timing sequence schematic diagram that the present invention sends two kinds of single-frequency square-wave signals.
Fig. 8 is the Control timing sequence schematic diagram that the present invention sends two kinds of direct current signals.
Wherein, Fig. 1 comprises: 1. prime Single Chip Microcomputer (SCM) system, 2. rear class output system, 3. display, 4. keyboard, 5. single-chip microcomputer, 6. communication module, 7. current controling signal D/A modular converter, 8. sampled signal A/D modular converter, 9. auxiliary power module, 10. rectification isolation Voltage stabilizing module, 11. current stabilization modules, 12. inversion modules, 13. modulation signal isolation drive modules, 14. down-hole 127V alternating current input ports, 15. transmitter output ports, 16. host computers.
Embodiment
Below in conjunction with drawings and Examples, the present invention will be further described.The present embodiment must not be used for explaining limiting the scope of the invention.
As shown in Figure 1, this embodiment is made up of prime Single Chip Microcomputer (SCM) system (1) and rear class output system (2).
Described prime Single Chip Microcomputer (SCM) system (1) comprising: display (3), keyboard (4), microprocessor (5), communication module (6), current controling signal D/A modular converter (7), sampled signal A/D modular converter (8).Wherein, human-computer interaction interface keyboard (4) and display (3) are connected with microprocessor (5), are mainly used in setting the voltage of intensity level and the real-time display translation signal sending pumping signal, current value and grounding resistance; Microprocessor (5) connects each module and carries out corresponding data processing; Current controling signal D/A modular converter (7) is connected microprocessor (6) and current stabilization module (11) with sampled signal A/D modular converter (8), converts the digital controlled signal that microprocessor (6) exports to analog quantity to control the constant current output of current stabilization module (11) and to sample; Microprocessor (5) is connected with host computer (16) by communication module (6), and in real time conveying transmitter sends the voltage of pumping signal, electric current and stake resistance value signal to host computer (16), so that host computer calculates accordingly.
Described rear class output system (2), by auxiliary power module (9), rectification isolation Voltage stabilizing module (10), current stabilization module (11), inversion module (12), modulation signal isolation drive module (13), 127V alternating current input port (14), transmitter output port (15).Wherein, auxiliary power module (9), for other modules provide respective working power; Isolation rectification module (10) connects external input port (14) and current stabilization module (11), converts the input of underground coal mine 127V alternating current the output of to isolated DC constant pressure source and as the input of current stabilization module (11); Current stabilization module (11) connects rectification isolation Voltage stabilizing module (10), current controling signal D/A modular converter (7), the input that Voltage stabilizing module (10) is isolated in rectification by the control command that current controling signal D/A modular converter (7) provides converts corresponding constant current output to and as the input of inversion module (12), it also sends the voltage and current sample analogue value of rear class (2) output drive signal to sampled signal A/D modular converter (8) in addition; The full bridge inverter that inversion module (12) is made up of four metal-oxide-semiconductors; The high stability that modulation signal isolation drive module (13) is made up of optocoupler and triode and resistance and low-power consumption metal-oxide-semiconductor driving circuit, realize the isolation of modulator control signal and the opening and shutoff of metal-oxide-semiconductor in driving inversion module (12).Transmitter sends when modulation signal carries out forward probe to be needed with lock-in amplify process frequently in data interpretation, therefore the control signal of modulation signal is provided by outside host computer.For guaranteeing that the pumping signal that transmitter sends has not carried out isolation processing by the interference of host computer.
Fig. 2 is rectification of the present invention isolation Voltage stabilizing module (10) circuit theory diagrams.The 127V alternating current of input accesses transducer T301 after rectifier bridge RS407 rectification.Transducer T301 and power switch pipe KA5H0380 forms single-ended flyback switching power supply.The feedback signal isolated transmission of transducer to the feedback end of KA5H0380, is made by FEEDBACK CONTROL that transducer is secondary becomes direct-flow voltage regulation source by optocoupler PC817.Wherein, low pressure is accessory power supply, high pressure access current stabilization module (11).
Fig. 3 is the circuit theory diagrams of current stabilization module (11) of the present invention, and wherein HLOUT is constant current output end, and IQY is current sampling end, and QV is voltage sampling end, and IF is the feedback end of GS3525.The reference voltage that 2 pin of GS3525 connect TL431 dividing potential drop and obtain, circuit sampling IQY accesses 1 pin of GS3525 as feedback after amplifying.The dutycycle of the high-frequency PWM ripple of QD is exported like this by feedback regulation GS3525.The high-frequency PWM of QD controls to adjust in one-period that stream power tube IRF640's open duration through optocoupler TLP250, regulate the electric current that its drain electrode exports.The electric current that drain electrode exports feeds back to 1 pin of GS3525 through sample resistance R321 sampling, forms closed-loop control like this, improves the stability of constant current.
Fig. 4 is the circuit theory diagrams of modulation signal isolation drive module (13) of the present invention.Input is high level is 5V, low level be the Control timing sequence of 0V to control the switch of the metal-oxide-semiconductor of full-bridge inverting, export and connect grid and the source electrode of the metal-oxide-semiconductor of full-bridge inverting.
Fig. 5 is the schematic diagram of inversion module of the present invention (12).Add different switch control time sequences to four metal-oxide-semiconductors, just constant current input can be reverse into the output of different current excitation signals as transmitter.Added Control timing sequence and corresponding current excitation signal schematic representation are shown in Fig. 6 to Fig. 8.
Claims (2)
1. a multifunction mine electrical method forward probe signal transmitter, is characterized in that described transmitter is made up of prime Single Chip Microcomputer (SCM) system and rear class isolation and amplifier system:
In described prime Single Chip Microcomputer (SCM) system, keyboard forms human-computer interaction interface with display screen and is connected with microprocessor, microprocessor is connected with rear class isolation and amplifier system with D/A modular converter by A/D conversion, and microprocessor is communicated with host computer through MODBUS agreement by communication module;
In described rear class isolation and amplifier system, transmitter external input port, isolation rectification module, current stabilization module are connected successively with inversion module; Auxiliary power module connects the feeder ear of transmitter external input port and other each modules, is responsible for each module and provides working power; Sampling module connects the A/D modular converter in current stabilization module and prime Single Chip Microcomputer (SCM) system; Modulation signal isolation drive model calling receiver and inversion module.
2. a kind of multifunction mine electrical method forward probe signal transmitter according to claim 1, it is characterized in that, can send continuous-current excitation signal, single-frequency square wave excitation signal and multifrequency modulated square wave pumping signal on request, and the intensity of often kind of pumping signal is adjustable; Rectification isolation mu balanced circuit and current stabilization circuit all adopt Switching Power Supply principle.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420683684.5U CN204188816U (en) | 2014-11-17 | 2014-11-17 | A kind of multifunction mine electrical method forward probe signal transmitter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420683684.5U CN204188816U (en) | 2014-11-17 | 2014-11-17 | A kind of multifunction mine electrical method forward probe signal transmitter |
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| CN204188816U true CN204188816U (en) | 2015-03-04 |
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| CN201420683684.5U Expired - Fee Related CN204188816U (en) | 2014-11-17 | 2014-11-17 | A kind of multifunction mine electrical method forward probe signal transmitter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104330829A (en) * | 2014-11-17 | 2015-02-04 | 中国矿业大学(北京) | Multifunctional mining electric detected signal transmitter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104330829A (en) * | 2014-11-17 | 2015-02-04 | 中国矿业大学(北京) | Multifunctional mining electric detected signal transmitter |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150304 Termination date: 20151117 |