CN102928887A - Integrated signal receiving device of radio trench scenograph - Google Patents
Integrated signal receiving device of radio trench scenograph Download PDFInfo
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- CN102928887A CN102928887A CN2012104021737A CN201210402173A CN102928887A CN 102928887 A CN102928887 A CN 102928887A CN 2012104021737 A CN2012104021737 A CN 2012104021737A CN 201210402173 A CN201210402173 A CN 201210402173A CN 102928887 A CN102928887 A CN 102928887A
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Abstract
The invention discloses an integrated signal receiving device of a radio trench scenograph, which comprises a receiving antenna 1, a pre-amplification circuit 2, a modulation circuit 3, a filter circuit 4, a signal acquiring circuit 5, a signal processor 6, a human-machine interface 7, a DDS (Direct Digital Synthesis) frequency synthesis circuit 8 and a power supply 9, wherein the receiving antenna 1 receives an electromagnetic wave signal sent by a radio trench scenograph sender, the pre-amplification circuit 2 is used for carrying out pre-amplification on the received signal, the signal subjected to pre-amplification is modulated with a frequency signal generated by the DDS frequency synthesis circuit 8 through the modulation circuit 3 to generate high-frequency and low-frequency signals, the high-frequency and low-frequency signals are filtered through the filter circuit 4, and the high-frequency signals can be filtered out, so that the corresponding low-frequency signals are obtained. The signal acquiring circuit 5 and the signal processor 6 are used for respectively acquiring and processing the low-frequency signals and displaying the low-frequency signals through the human-machine interface 7. The integrated signal receiving device is mainly characterized in that the receiving antenna is miniaturized, and is installed together with a receiving device, so that the convenience is brought to carrying and project implementation, the complexity and the operation time are greatly lowered, and the demand of detecting the geological condition is met.
Description
Technical field
The present invention relates to a kind of radio underground electromagnetic wave perradiator integration signal receiving trap, be particularly useful for a kind of physical prospecting equipment for the colliery---radio underground electromagnetic wave perradiator.
Background technology
The radiowave underground electromagnetic wave perradiator is called for short the saturating instrument in hole.Its function is to utilize the propagation characteristic of electromagnetic wave in medium, surveys the tectonic structure in the mine coal face, as subside, tomography, pyrogenic rock, Coal Seam Thickness Change, gas enrichment region and gushing water structure etc.Can reduce a large amount of drilling project amounts, cost saving to the foreseeability of accident potential, effectively avoids accident to occur when improving coal mining, reduces the loss, and increases safety coefficient, improves output and benefit.
For the saturating instrument receiving trap in present hole, the general sampling and processing that adopts discrete component to realize signal, and gather electromagnetic wave signal by large coil (as shown in Figure 8), cause the volume of device large, the problems such as signal accuracy is low, poor reliability, engineering construction difficulty.The present invention is placed on same enclosure interior with receiving antenna and receiving trap, the magnetic rod antenna made from the high-performance permeability magnetic material replaces large coil antenna, and by the preposition amplification of signal, signal modulation, filtering, signals collecting and digital signal processing, improve received signal quality, greatly reduced the volume of device, be easy to carry and engineering construction, greatly reduced complicacy and the running time of using, satisfied the demand of geological condition under the detecting shaft.
Summary of the invention
The present invention proposes a kind of radio underground electromagnetic wave perradiator integration signal receiving trap, this device is placed on same enclosure interior with receiving antenna and receiving trap, the magnetic rod antenna made from the high-performance permeability magnetic material replaces large coil antenna, and by the preposition amplification of signal, signal modulation, filtering, signals collecting and digital signal processing, guarantee to receive signal and reach optimum state.
For achieving the above object, the technical solution used in the present invention is:
As shown in Figure 1, radio underground electromagnetic wave perradiator integration signal receiving trap, this device is comprised of receiving antenna module 1, pre-amplification circuit module 2, modulation circuit module 3, filter circuit module 4, signal acquisition circuit module 5, signal processor module 6, human-computer interface module 7, DDS frequency synthesizer circuit module 8 and power module 9.The magnetic rod antenna that module 1 usefulness high-performance permeability magnetic material is made replaces large coil antenna, and receiving antenna and receiving trap are placed on same enclosure interior, greatly reduces the size of the saturating instrument receiving trap in hole, is convenient to carry in the open air and use; Module 2, module 3, module 4 and module 8 are the advance signal processing section of signal receiving device, realize that high-frequency signal is to conversion and the filter function of low frequency signal; Module 5 is the signal acquisition circuit module, and the signal after advance signal is processed carries out the AD sampling, and sends to signal processing module 6 by communication port.The signal that module 6 is sent signal acquisition module shows by module 7 after passing through the signal processing and be shown as figure, inverting etc. and processing.
Above-mentioned module 1 high-performance magnetism staff aerial is one of main summary of the invention of this device, and as shown in Figure 7, this antenna twines wire by the high-performance permeability magnetic material and forms permeability magnetic material diameter 10mm, the about 120mm of length.The number of turn that twines wire outward requires and can suitably increase and decrease according to the sensitivity of receiving trap, compares with large coil (coil diameter is about 1000mm) shown in Figure 8, and volume greatly reduces.
Above-mentioned module 2 pre-amplification circuits can amplify the signal that receiving antenna receives;
Above-mentioned module 3 modulation circuit modules are mainly realized from the mixing of antenna reception input signal and DDS frequency synthesizer circuit generation signal;
Above-mentioned module 4 is finished the High frequency filter of mixed frequency signal;
Above-mentioned module 5 is mainly finished the collection of sampled signal, is used for control selective reception frequency and ride gain, is comprised of to the digital quantity translation circuit MCU control circuit, analog quantity.The frequency of MCU control prime is selected frequency, commutation circuit and ride gain.Can control by the pilot relay switch-capacitor tuningly, and come receive frequency is finely tuned the receive frequency of control modulation amplification board by the induction reactance of translation circuit inductance.
Above-mentioned module 6 is signal processing module, mainly finishes (such as the ARM11 chip S3C6410 of Samsung) by a high-performance CPU, is responsible for signal and processes and be shown as the functions such as figure, inverting.
Above-mentioned module 7 is Man Machine Interfaces of the saturating instrument receiving trap in hole, mainly module 6 generation information is shown.
Above-mentioned module 8 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 9 is finished accumulator cell charging and discharging management and defencive function for receiving trap provides power supply.Power supply is the 12V Ni-MH battery.The required 5V of modulation amplification board 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.
Compared with prior art, the advantage that has of the present invention is as follows:
1) dispose flexibly, easy and simple to handle.The magnetic rod antenna made from the high-performance permeability magnetic material replaces large coil antenna, and receiving antenna and receiving trap be placed on same enclosure interior, by the preposition amplification of signal, signal modulation, filtering, signals collecting and digital signal processing, improve received signal quality, greatly reduced the volume of device, be easy to carry and engineering construction, easy and simple to handle, regulate the speed fast, reliability is high.
2) antijamming capability is strong.This device can the base area qualitative change change the selective reception frequency, produces the modulation signal of various frequencies by programmed control, and by high-performance filtering and signal processing, at the strongly disturbing regionally detecting of complexity, can effectively suppress to disturb, and guarantees the accuracy of measuring.
3) frequency switching time is short.The debugging frequency signal generates and adopts Direct Digital frequency synthesis (DDS) technology, and 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 clock frequency 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.
Description of drawings
Fig. 1 is radio underground electromagnetic wave perradiator integration signal receiving trap structured flowchart of the present invention;
Fig. 2 is DDS frequency synthesizer circuit figure of the present invention;
Fig. 3 is modulation circuit figure of the present invention;
Fig. 4 is pre-amplification circuit figure of the present invention;
Fig. 5 is filtering circuit figure of the present invention.
Fig. 6 is that radio underground electromagnetic wave perradiator integration signal receiving trap of the present invention is implemented block diagram;
Fig. 7 is magnetic rod antenna synoptic diagram of the present invention;
Fig. 8 is large coil synoptic diagram of the present invention;
Fig. 9 is power management synoptic diagram of the present invention;
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 be comprised of power panel, front panel, signal acquiring board, signal-processing board and display board five parts.Power panel is mainly receiving trap power supply is provided, and finishes accumulator cell charging and discharging management and defencive function.
As shown in Figure 9, the control power supply has 3 tunnel outputs:
Give signal-processing board (6410 plate);
Produce the generating positive and negative voltage that the simulation part needs for a small power supply plate;
About partly power for single-chip microcomputer and DDS.
The positive-negative power of powering usefulness for the simulation part can be isolated the XR12/12D12-12 module by 12V and be produced positive and negative 12V, after add again linear voltage stabilizing LM2991S;
LM2941S can produce ± the 7V Voltage-output.
DDS, MCU, ADC partly need 5V power supply and 3.3V power supply to be produced by voltage transformation module.
Power supply is that 78L05 can not work owing to be lower than 7V to signal acquiring board to adopt 7V, and voltage is too high, and pressure reduction is too large, and the chip heating is severe.
Dotted portion is made in a plank and goes out altogether following 5 road power supplys among Fig. 9:
1. 5V powers to S3C6410, electric current 1A;
2. 5V preferably linear voltage regulator is out to ADC() power supply, electric current 100mA can carry out voltage stabilizing by AMS1117-5.0;
3. 3.3V powers to MCU, and electric current 500mA can pass through the AMS1117-3.3 voltage stabilizing;
4. 5V powers to DDS, and electric current 500mA can carry out voltage stabilizing by AMS1117-5.0;
5. ± 7V simulates part to prime, can pass through XR12/12D12-12, LM2991S, the LM2941S module realizes;
Below all can be altogether.But ± 7V insulating power supply, it is not altogether.
Front panel mainly carries out signal processing in early stage to the frequency signal that receives antenna samples, is made of the circuit of each several part such as Fig. 2, Fig. 3, Fig. 4, shown in Figure 5 pre-amplification circuit, modulation circuit, DDS frequency synthesizer circuit, filtering circuit four parts.
Signal acquiring board is mainly used in controlling the electromagnetic wave signal that front panel produces 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 signal frequency is finely tuned by the induction reactance of translation circuit inductance.
Signal-processing board adopts high performance signal processing chip (can adopt the ARM11 chip S3C6410 of Samsung), finishes post-processed, the inverting of sampled signal and shows control etc.
Prime and DDS partly have two signaling interfaces, between connect with radio-frequency joint.
Front panel outputs signal to analog to digital conversion (ADC) circuit of signal acquiring board.
The frequency of the MCU control front panel prime of signal acquiring board is selected frequency, commutation circuit and ride gain.Adopt digital signal, driving waits and is made on the front panel preamplifying circuit.
The frequency of MCU control DDS shares a MCU with ADC, communicates by SPI between the S3C6410 of MCU and signal-processing board.
Display board is the Man Machine Interface of the saturating instrument receiving trap in hole, mainly signal-processing board generation information is shown.
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. radio underground electromagnetic wave perradiator integration signal receiving trap, this device is comprised of receiving antenna 1, pre-amplification circuit 2, modulation circuit 3, filtering circuit 4, signal acquisition circuit 5, signal processor 6, man-machine interface 7, DDS frequency synthesizer circuit 8 and power supply 9; It is characterized in that: receiving antenna and receiving trap are placed on same enclosure interior, the magnetic rod antenna made from the high-performance permeability magnetic material replaces large coil antenna, and by the preposition amplification of signal, signal modulation, filtering, signals collecting and digital signal processing, improve received signal quality, greatly reduced the volume of device, be easy to carry and engineering construction, greatly reduced complicacy and the running time of using, satisfied the demand of geological condition under the detecting shaft.
2. radio underground electromagnetic wave perradiator integration signal receiving trap as claimed in claim 1 is characterized in that described frequency synthesizer circuit adopts direct digital frequency synthesis technology, is finished by highly integrated chip, and circuit as shown in Figure 2.
3. radio underground electromagnetic wave perradiator integration signal receiving trap as claimed in claim 1 is characterized in that, described modulation circuit adopts the signal frequency mixing technique, the electromagnetic wave that receives is produced frequency multiplication and two kinds of signals of difference frequency by mixing, as shown in Figure 3.
4. radio underground electromagnetic wave perradiator integration signal receiving trap as claimed in claim 1 is characterized in that described signal amplification circuit is the advance signal amplifying circuit, adopts the power amplification chip to realize, as shown in Figure 4.
5. radio underground electromagnetic wave perradiator integration signal receiving trap as claimed in claim 1, it is characterized in that described filtering circuit is a kind of high-frequency filter circuit, with the high-frequency signal filtering in the mixed frequency signal of modulation circuit generation, obtain 5 hertz low frequency signal, circuit as shown in Figure 5.
6. radio underground electromagnetic wave perradiator integration signal receiving trap as claimed in claim 1 is characterized in that, described small size antenna circuit adopts bar magnet to add the mode of winding as shown in Figure 7, and bar magnet is the high-performance permeability magnetic material, and coil winding is on bar magnet.
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Cited By (5)
| 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 |
| 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 |
| CN110954961A (en) * | 2019-11-22 | 2020-04-03 | 山西晋煤集团技术研究院有限责任公司 | Large-sector mine working face radio wave penetration system and method |
| CN113970792A (en) * | 2021-10-26 | 2022-01-25 | 福建平潭旭坤实业有限公司 | Radio wave perspective instrument receiving system and receiving method thereof |
| CN115882896A (en) * | 2022-11-25 | 2023-03-31 | 中国电子科技集团公司第二十九研究所 | DDS spread spectrum circuit, device and method for obtaining optimal scheme of spread spectrum circuit |
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Cited By (9)
| 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 |
| 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 |
| CN110954961A (en) * | 2019-11-22 | 2020-04-03 | 山西晋煤集团技术研究院有限责任公司 | Large-sector mine working face radio wave penetration system and method |
| CN110954961B (en) * | 2019-11-22 | 2022-07-12 | 山西晋煤集团技术研究院有限责任公司 | Large-sector mine working face radio wave penetration system and method |
| CN113970792A (en) * | 2021-10-26 | 2022-01-25 | 福建平潭旭坤实业有限公司 | Radio wave perspective instrument receiving system and receiving method thereof |
| CN113970792B (en) * | 2021-10-26 | 2024-03-08 | 福建平潭旭坤实业有限公司 | Radio wave perspective instrument receiving system and receiving method thereof |
| CN115882896A (en) * | 2022-11-25 | 2023-03-31 | 中国电子科技集团公司第二十九研究所 | DDS spread spectrum circuit, device and method for obtaining optimal scheme of spread spectrum circuit |
| CN115882896B (en) * | 2022-11-25 | 2024-04-05 | 中国电子科技集团公司第二十九研究所 | DDS spread spectrum circuit, device and method for obtaining optimal scheme of spread spectrum 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: 20130213 |