CN102955175A - Self-adaption signal conditioning and sending device and method of wireless underground tunnel scenograph - Google Patents
Self-adaption signal conditioning and sending device and method of wireless underground tunnel scenograph Download PDFInfo
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- CN102955175A CN102955175A CN2012103984357A CN201210398435A CN102955175A CN 102955175 A CN102955175 A CN 102955175A CN 2012103984357 A CN2012103984357 A CN 2012103984357A CN 201210398435 A CN201210398435 A CN 201210398435A CN 102955175 A CN102955175 A CN 102955175A
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Abstract
The invention discloses a self-adaption signal conditioning and sending device of a wireless underground tunnel scenograph. The device consists of a CPU (Central Processing Unit) core processing circuit 1, a DDS (Direct Digital Synthesis) frequency signal synthesizing circuit 2, a power amplification circuit 3, an output circuit 4, a sending antenna 5, a man-machine interface 6, a frequency fine tuning circuit 7, a current feedback circuit 8 and a power supply 9, wherein a module 1 controls a module 2 to generate a corresponding frequency signal according to input information of a module 6; and after the frequency signal is subjected to power amplification of a module 3, the frequency signal is output by a module 4 and a module 5. In an output process, a module 8 continually collects an output current and feeds the output current back to the module 1, so as to control a module 7 to carry out frequency fine tuning and enable a sending signal of the module 5 to be the maximum. The device can monitor the output a tunnel penetration signal in real time and can automatically carry out fine tuning on a sending frequency; and the self-adaption signal conditioning and sending device has high intelligent and automatic degree, greatly reduces the use complexity and operation time, and meets the requirements of detecting an underground geological condition.
Description
Technical field
The present invention relates to self-adaptation conditioning dispensing device and the method for a kind of radio tunnel perspective signal, be particularly useful for a kind of physical prospecting equipment for the colliery---radio underground electromagnetic wave perradiator.
Background technology
Radio wave pentration method (claiming again " cheating method ") is to utilize the electrical property difference between the detection of a target and the surrounding medium to determine objective body position form, a kind of geophysical prospecting method of big or small transitivity parameter.Place by boring sends when the radiation field electromagnetic wave, and wave reflection, refraction, transmission and edge diffraction just occur when running into electrically different objective bodies, and to the phenomenons such as absorption of ripple, thereby a distribution that has changed.Radio wave pentration method by research electromagnetic wave boring or the tunnel between propagation characteristic and by the situation of Absorption of Medium seek the delineation all types of target.
In the present hole number of the leaking information dispensing device, radio wave signal is launched by signal sending circuit and transmitting coil, and realizes the switching of transmission frequency by the impedance of manual switchover transtation mission circuit.Along with coil loss in use, twist coil may occur cause impedance variation, be subject to simultaneously temperature, surrounding environment influence, cause the signal output performance to reduce.In order to remedy the loss of signal, cheat the instrument producer impedance trimming circuit of generally in signal sending circuit, having connected, by the length of manual adjustment coil or the sectional area of electric capacity, reach the resonance frequency of adjusting transmitting line.But this manual adjusting device realizes by the mode of measuring while adjusting, and the time of adjustment is long, and is difficult to make system performance to reach optimum.
Summary of the invention
The present invention proposes a kind of adaptive automatic conditioning device, and this device can be finely tuned automatically according to the impedance variation of transmitting coil, and guaranteeing transmits reaches optimum state.
For achieving the above object, the technical solution used in the present invention is:
As shown in Figure 1, the adaptive hole number of leaking information conditioning dispensing device is comprised of core cpu treatment circuit 1, DDS frequency signal combiner circuit 2, power amplification circuit 3, output circuit 4, transmitting antenna 5, man-machine interface 6, frequency tuning circuit 7, current feedback circuit 8 and power supply 9; Module 1 can be according to the input message of module 6, and control module 2 generates corresponding frequency signal, after the power amplification of module 3, through module 4 and module 5 outputs.In output procedure, module 8 can constantly gather output current feed back to module 1, and then control module 7 carries out frequency trim, so that the transmitted signal of module 5 is maximum.This device can be cheated the output of the number of leaking information by Real-Time Monitoring, and automatically transmission frequency is finely tuned, and intellectuality and automaticity are high, greatly reduce complicacy and the running time of use, have satisfied the demand of geological condition under the detecting shaft.
Above-mentioned module 1 core processing circuit is the centralized control unit of this device, be responsible for to gather the feedback circuit current parameters, and according to the size of current trimming circuit impedance of adjusting frequency.Simultaneously, module 1 also can gather the input parameter of man-machine interface 6, and generates required pulse signal according to input parameter control DDS frequency synthesizer circuit.
Above-mentioned module 2 frequency synthesizer circuits adopt direct digital frequency synthesis technology, and (such as the AD9850 of U.S. AD company) finishes by highly integrated chip.Integrated frequency synthesis chip just can produce frequency and phase place all analog sine or the square wave output of control able to programme after receiving high-precision clock source and frequency plot control word.
Above-mentioned module 3 is a kind of power amplification circuits, as shown in Figure 2, and the fixed frequency sine wave or the square-wave signal that are input as module 2 outputs of module 3.But directly the signal energy from highly integrated chip output is lower, can not satisfy the saturating device in hole to the requirement of transmit signal energy, is difficult to reach penetrate rib or other media, and receives the purpose of electromagnetic wave signal at the opposite side receiving end.Therefore the present invention has designed a kind of two-stage signal amplifying circuit, and the frequency signal that direct frequency synthesis chip is exported amplifies.
Above-mentioned module 4 is signal output apparatus, and as shown in Figure 3, the electromagnetic wave signal after being responsible for amplifying is launched by coil.Output circuit is a LC oscillatory circuit, and resonance frequency is determined by the parameter of circuit coil and electric capacity.
Above-mentioned module 5 be one by the transmitting coil of wire coiled, be responsible for electromagnetic wave signal is propagated in the medium to be measured by coil.
Above-mentioned module 6 is the man-machine interaction units between this device and the operator, can be the devices such as touch-screen, button, LCDs, microcomputer.
Above-mentioned module 7 is characteristic parts of the present invention, and as shown in Figure 4, automaticallying switch by relay is connected in series to trimmer in the output loop, through current feedback module 8 Real-time Collection output currents size, determines best trimmer combination.
Above-mentioned module 8 is current feedback loop, as shown in Figure 5, module 8 is at first by a pickup coil access output loop 7, then by sample resistance detector diode, RC filter circuit and rectification circuit, realize sending the sampling of electric current, and send sampled value back to module 1.
Compared with prior art, the advantage that has of the present invention is as follows:
1) according to sending the coil impedance self-adaptation trimming circuit state of adjusting frequency, by various array modes in the core processor auto-control traversal frequency tuning circuit, size by sample circuit Real Time Observation output current, automatically choose the array mode of transmitted signal when maximum and carry out signal output, easy and simple to handle, regulate the speed fast, reliability is high.
2) antijamming capability is strong: this device forms the control system of a closed loop by forward loop and backward backfeed loop, can according to measuring error automatic circuit state, guarantee that system stability is at optimum state.Particularly at the strongly disturbing regionally detecting of complexity, can effectively suppress to disturb, guarantee the accuracy of measuring.
3) frequency switching time is short
DDS is an open cycle system, and without any feedback element, this structure is so that the frequency switching time of DDS is extremely short.In fact, after the frequency control word of DDS changes, need to realize the conversion of frequency through cumulative according to new phase increment after the clock period.Therefore, the time of frequency inverted equals the transmission time of frequency control word, namely the time of a clock period.Clock frequency is higher, and switching time is shorter.The frequency switching time of DDS can reach the nanosecond order of magnitude, all wants a short number order of magnitude than the frequency combining method that uses other.
4) frequency resolution is high
If the frequency of clock fs is constant, the frequency resolution of DDS is just determined by the figure place N of phase accumulator.Can obtain arbitrarily small frequency resolution as long as increase the figure place N of phase accumulator.At present, the resolution of most of DDS is at the 1Hz order of magnitude, and is many less than 1mHz even less.
5) phase place changes continuously
Change the DDS output frequency, the phase increment of each clock period that in fact changes, the curve of phase function is continuous, just change frequency moment its Frequency generated sudden change, thereby kept the continuity of signal phase.
6) output waveform dirigibility
As long as add corresponding control such as frequency modulation control FM, phase modulation control PM and amplitude adjustment control AM in DDS inside, namely can realize easily and flexibly frequency modulation, phase modulation and amplitude modulation function, produce the signals such as FSK, PSK, ASK and MSK.In addition, as long as deposit the different wave data at the wave memorizer of DDS, just can realize that various waveforms export, such as triangular wave, sawtooth wave and square wave or even waveform arbitrarily.When the wave memorizer of DDS is deposited respectively the sine and cosine functions table, both can obtain the two-way output of quadrature.
7) self-adaptation discharge current: data acquisition computer adopts the digital control sparking voltage, can regulate continuously, can automatically select optimum discharge current according to the actual conditions of colliery rib, has improved measuring accuracy.
Description of drawings
Fig. 1 is the self-adaptation of the present invention hole number of leaking information conditioning dispensing device structured flowchart;
Fig. 2 is signal amplification circuit figure of the present invention;
Fig. 3 is signal sending circuit circuit diagram of the present invention;
Fig. 4 is signal frequency trimming circuit figure of the present invention;
Fig. 5 is current sampling circuit figure of the present invention.
Fig. 6 is the self-adaptation of the present invention hole number of leaking information conditioning dispensing device hardware principle block diagram;
Fig. 7 is the self-adaptation of the present invention hole number of leaking information conditioning dispensing device software operation process flow diagram;
Fig. 8 is transmitter current size of the present invention and corresponding emission mode storage list thereof;
Embodiment
The present invention is further illustrated below in conjunction with drawings and Examples.
As shown in Figure 6, cheating instrument transmitter installation internal main will partly be comprised of power management plate, master control board, power amplification plate and display board.The power management plate is mainly transmitter power supply is provided, and finishes accumulator cell charging and discharging management and defencive function.Power supply is the 12V Ni-MH battery.The required 5V of power amplification plate directly accesses from the power management plate; The required 5V(of master control borad adds 3.3V in addition, can oneself add voltage stabilizing and produce) and the required 5V power supply of display board access by the power management plate.
Master control borad is mainly used in the power ratio control amplification board and produces transmitting of multi-frequency, by MCU control circuit and DDS two parts the electric circuit constitute.Can control by the pilot relay switch-capacitor tuningly, and come output frequency is finely tuned the transmission frequency of power ratio control amplification board by the induction reactance of translation circuit inductance.Simultaneously, the display brightness of all right control display plate of master control borad detects transmitter current size and demonstration etc.
The power amplification plate mainly amplifies the frequency signal that master control borad produces, and by power amplification and the tuning two parts the electric circuit constitute of output, for generation of the emitting electromagnetic wave of multi-frequency, and launches by transmitting coil.Also designed the detection measuring point of transmitter current testing circuit on the power amplification plate, be linked into master control borad and carry out the transmitter current demonstration.
Display board is the Man Machine Interface of the saturating instrument in hole, mainly master control borad generation information is shown.
As shown in Figure 7, radio underground electromagnetic wave perradiator self-adapting signal conditioning sending method can be divided into following steps:
(1) opens equipment, power-on;
(2) system carries out the initialization setting, the parameters such as configuration corresponding registers;
(3) reading frequency switch state is judged the transmission frequency gear, does not switch if do not need to carry out frequency, then directly enters (5), waiting signal emission trigger pip, otherwise carry out next step;
(4) according to the output frequency gear configuration DDS chip parameter that reads;
(5) determine whether that carrying out signal exports, send trigger pip if detect signal, then install the various states of automatic detection battery voltage and battery, otherwise carry out next step;
(6) enable the DDS circuit, the transmission frequency signal;
(7) detect fine setting mode switch state, if do not need to finely tune mode adjustment, system jumped to for (3) step automatically, reentered signal and sent the cycle, otherwise carry out next step;
(8) read the transmitter transmitter current by signal deteching circuit;
(9) transmitter current size and corresponding emission mode thereof are stored as form, as shown in Figure 8.
(10) travel through all emission modes, and the electric current that various emission modes are corresponding storage;
(11) transmitter current corresponding to more various patterns draws emission mode corresponding to maximum current;
(12) switching the fine setting mode state is closed condition;
(13) with maximum current pattern output frequency signal.
Should be noted that; above disclosed only is a kind of preferred embodiment of the present invention; certainly can not limit with this interest field of the present invention; under the prerequisite that does not break away from the principle of the invention; those skilled in the art can also make some improvements and modifications, and these improvements and modifications also should be considered as protection scope of the present invention.
Claims (6)
1. the self-adaptation hole number of leaking information conditioning dispensing device is by core cpu treatment circuit 1, DDS frequency signal combiner circuit 2, power amplification circuit 3, output circuit 4, transmitting antenna 5, man-machine interface 6, frequency tuning circuit 7, current feedback circuit 8 and power supply 9 form, it is characterized in that: the core processing module 1 that this device comprises, current feedback module 8, frequency trim module 7 and power amplifier module 3 etc. have formed the frequency signal of a closed loop and have adjusted dispensing device, realize a kind of adaptive signal condition method, device can be according to extraneous variations the such as loss situation of environmental change or antenna, automatically adjust the emission parameter of every dispensing device, guarantee that transmitted signal is the strongest.
2. the self-adaptation as claimed in claim 1 hole number of leaking information conditioning dispensing device is characterized in that described frequency amplifying circuit 3 is comprised of two-stage circuit, and circuit as shown in Figure 4.
3. the number of leaking information conditioning dispensing device in self-adaptation as claimed in claim 1 hole is characterized in that, described output circuit 4 is coupled by coil, and is connected to emitting antenna by capacitor, as shown in Figure 5.
4. the self-adaptation hole number of leaking information conditioning dispensing device as claimed in claim 1 is characterized in that, described man-machine interface 6 can be a kind of or its combinations such as touch-screen, button, LCD MODULE.
5. the self-adaptation hole number of leaking information conditioning dispensing device as claimed in claim 1 is characterized in that, described frequency tuning circuit 7 is undertaken tuning by electric capacity or inductance, guarantee that output signal is optimum, and circuit model as shown in Figure 2.
6. the self-adaptation hole number of leaking information conditioning dispensing device as claimed in claim 1 is characterized in that, described current feedback circuit 8 is by sample resistance, RC filtering circuit and Half bridge rectifier the electric circuit constitute, and circuit as shown in Figure 3.
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| CN2012103984357A CN102955175A (en) | 2012-09-25 | 2012-10-19 | Self-adaption signal conditioning and sending device and method of wireless underground tunnel scenograph |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103825666A (en) * | 2014-02-25 | 2014-05-28 | 淮南矿业(集团)有限责任公司 | Multi-vector frequency hopping wireless electromagnetic wave pit-penetrating transmitting and receiving equipment, system and method |
| CN104459072A (en) * | 2014-12-12 | 2015-03-25 | 中国地质大学（武汉） | Multiple-parameter water quality monitoring node device based on WSN |
| CN104481519A (en) * | 2014-09-25 | 2015-04-01 | 华中科技大学 | Cross-well electromagnetic well logging signal emission electronic system |
| CN105445807A (en) * | 2015-11-09 | 2016-03-30 | 中煤科工集团重庆研究院有限公司 | Mining multi-frequency synchronous wireless electromagnetic wave penetration device and method |
| CN108919365A (en) * | 2018-05-29 | 2018-11-30 | 福州华虹智能科技股份有限公司 | A kind of radio underground electro magnetic wave perradiator |
| CN109031002A (en) * | 2018-08-22 | 2018-12-18 | 南京铁道职业技术学院 | A kind of intelligent frequency synthesis formula mobile unit signal loor signaling circuit |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103825666A (en) * | 2014-02-25 | 2014-05-28 | 淮南矿业(集团)有限责任公司 | Multi-vector frequency hopping wireless electromagnetic wave pit-penetrating transmitting and receiving equipment, system and method |
| CN103825666B (en) * | 2014-02-25 | 2016-02-17 | 淮南矿业(集团)有限责任公司 | Many vectors frequency hopping wireless electromagnetic wave cheats launching and receiving equipment, system and method |
| CN104481519A (en) * | 2014-09-25 | 2015-04-01 | 华中科技大学 | Cross-well electromagnetic well logging signal emission electronic system |
| CN104481519B (en) * | 2014-09-25 | 2017-06-16 | 华中科技大学 | Electromagnetic logging signal launching electronics system between a kind of well |
| CN104459072A (en) * | 2014-12-12 | 2015-03-25 | 中国地质大学（武汉） | Multiple-parameter water quality monitoring node device based on WSN |
| CN105445807A (en) * | 2015-11-09 | 2016-03-30 | 中煤科工集团重庆研究院有限公司 | Mining multi-frequency synchronous wireless electromagnetic wave penetration device and method |
| CN108919365A (en) * | 2018-05-29 | 2018-11-30 | 福州华虹智能科技股份有限公司 | A kind of radio underground electro magnetic wave perradiator |
| CN109031002A (en) * | 2018-08-22 | 2018-12-18 | 南京铁道职业技术学院 | A kind of intelligent frequency synthesis formula mobile unit signal loor signaling circuit |
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Address after: 100085 Beijing, East Road, No. 1, building No. 3, building, building No. seven, 705-711 Applicant after: Beijing Huaan Aote Technology Co., Ltd. Address before: 100085, room 1905, building 1, splendid international ten Street, Haidian District, Beijing Applicant before: Beijing Huaan Aote Technology Co., Ltd. |
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Application publication date: 20130306 |