CN204347243U - Based on the active ground penetrating radar system of broadband burst pulse electromagnetic wave technology - Google Patents
Based on the active ground penetrating radar system of broadband burst pulse electromagnetic wave technology Download PDFInfo
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- CN204347243U CN204347243U CN201420687036.7U CN201420687036U CN204347243U CN 204347243 U CN204347243 U CN 204347243U CN 201420687036 U CN201420687036 U CN 201420687036U CN 204347243 U CN204347243 U CN 204347243U
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Abstract
The utility model provides a kind of active ground penetrating radar system based on broadband burst pulse electromagnetic wave technology, comprises emitter, receiving trap, harvester and APU; It is characterized in that: described emitter is made up of MARX circuit and butterfly antenna; Receiving trap is made up of teledish, equivalent sampling gate circuit and sampling hold circuit; Harvester by bandpass filtering, time become amplifying circuit, microprocessor, AD circuit, embedded board and GPS module form; Harvester is connected by electrical cable with emitter, receiving device; Harvester and APU exchange data; Harvester provides time sequential pulse for emitter and receiving trap.Compared with prior art, the active ground penetrating radar system of the utility model, can reduce the AD device cost that system increases to improve signal to noise ratio (S/N ratio), reduces the dependence of systems versus software.
Description
Technical field
The utility model relates to a kind of active ground penetrating radar system based on broadband burst pulse electromagnetic wave technology.
Background technology
Active ground penetrating radar system is a kind of geophysics nondestructive detection system, be mainly used in the detection of shallow-layer objective body, be now widely used in the detection of buried target body, urban rainwater and sewer line detection, natural gas line detects, water supply pipe detects, the fields such as Environment Protection and Drainage of Pulled Water pipeline detection.
The positional information of traditional ground penetrating radar mainly relies on scrambler to react the length of actual measurement, and needs the initial sum final position in manual record radargrammetry process, makes troubles to the arrangement of late time data.
The collecting unit of traditional ground penetrating radar detection system only completes the simple process of receiving element signal, due to the amplitude higher (volt level) of the direct-path signal that reflection of radar wave is returned, and deep layer medium returns the signal amplitude less (microvolt level) come, cause AD device must have wider voltage measurement scope and higher resolution, when causing system, the AD device that necessary purchase cost is higher.
The collecting unit of traditional ground penetrating radar detection system only realizes the simple analog to digital conversion of reflected signal, and the analyzing and processing of data transfers to software completely, causes the workload of system software bigger than normal.
Harvester and the display device of traditional ground penetrating radar detection system are connected by comparatively thick cable, cause in test process, emitter, receiving trap, harvester and display device must together with move, realize the detection of these road surface underground utilities, very inconvenient.
Summary of the invention
The invention provides a kind of active ground penetrating radar system of broadband burst pulse.
To achieve these goals, the utility model provides a kind of active ground penetrating radar system based on broadband burst pulse electromagnetic wave technology, comprises emitter, receiving trap, harvester and APU; It is characterized in that: described emitter is made up of MARX circuit and butterfly antenna; Receiving trap is made up of teledish, equivalent sampling gate circuit and sampling hold circuit; Harvester by bandpass filtering, time become amplifying circuit, microprocessor, AD circuit, embedded board and GPS module form; Harvester is connected by electrical cable with emitter, receiving device; Harvester and APU exchange data; Harvester provides time sequential pulse for emitter and receiving trap.
In some embodiments, harvester and APU adopt cable network to carry out exchanges data, or carry out the exchange of data after being changed by wireless router.The square wave frequency that microprocessor in described harvester produces is adjustable, for emitter and receiving trap provide time sequential pulse.
In some embodiments, also comprise absorbing material and shielding box, absorbing material loads in shielding box, and the butterfly antenna of emitter and the butterfly antenna of harvester are emitted on the lowermost end of shielding box side by side.
In some embodiments, the MARX circuit of emitter is vertical with butterfly antenna to be placed, and the equivalent sampling gate circuit of receiving trap is placed with sampling hold circuit is vertical with butterfly antenna.The MARX circuit of harvester separates with the equivalent sampling gate circuit of receiving trap and sampling hold circuit and loads in absorbing material, centre aluminium flake separates, the circuit board of harvester is fixed on shielding box upper end, and wherein harvester is connected by electrical cable with emitter and receiving device.
The same original signal that the input signal of MARX circuit and the input signal of sampling gate circuit provide for microprocessor.
In some embodiments, the same original signal that the input signal of MARX circuit and the input signal of sampling gate circuit provide for microprocessor, come to be the synchronous of realization transmitting and receiving by hardware, and do not need additionally to write software to obtain the start-stop of each section of Received signal strength.
In some embodiments, the whole change fathomed is realized by digital circuit, equivalent sampling spacing and fathom more accurate.
In some embodiments, the butterfly antenna of transmitting and the butterfly antenna of reception are the antenna of same size.
In some embodiments, by time become amplifying circuit and carry out the signal to noise ratio (S/N ratio) of regulating system, reduce the requirement of system to AD device.
Compared with prior art, the active ground penetrating radar system of the utility model, can reduce the AD device cost that system increases to improve signal to noise ratio (S/N ratio), reduces the dependence of systems versus software.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of the utility model active ground penetrating radar system first embodiment;
Fig. 2 is that emitter sends the narrow electromagnetic pulse signal of broadband and enters schematic diagram in underground medium.
Embodiment
The utility model provides a kind of active ground penetrating radar system based on broadband burst pulse electromagnetic wave technology, comprises emitter, receiving trap, harvester and APU; It is characterized in that: described emitter is made up of MARX circuit and butterfly antenna; Receiving trap is made up of teledish, equivalent sampling gate circuit and sampling hold circuit; Harvester by bandpass filtering, time become amplifying circuit, microprocessor, AD circuit, embedded board and GPS module form; Harvester is connected by electrical cable with emitter, receiving device; Harvester and APU exchange data; Harvester provides time sequential pulse for emitter and receiving trap.
Be the structured flowchart of the utility model active ground penetrating radar system first embodiment in Fig. 1, described system comprises emitter, receiving trap, harvester, analyzing and processing and display device.
As shown in Figure 2, emitter sends the narrow electromagnetic pulse signal of broadband and enters in underground medium, after electromagnetic wave encounters the extended media of underground existence, receiving trap receives the electromagnetic pulse signal reflected, after equivalent sampling process, be converted into the signal that frequency is lower, then through the signal transacting of harvester, be converted into digital signal, and be sent in the buffer memory of network controller, wait for that analyzing and processing and display device send uploading data order, the data received process by PC, and show X-Y scheme.
In the embodiment of this novel practical, as shown in Figure 1, microprocessor 301 produces the square wave that dutycycle is 50%, and its frequency can regulate as required, for emitter and receiving trap provide signal source.
As shown in Figure 1, emitter is made up of MARX circuit 202 and butterfly antenna 201, and the square-wave signal that microprocessor 301 produces, after MARX circuit 202, is converted to the Gauss pulse signal of burst pulse high instantaneous power, is then launched by butterfly antenna 201.Radar detection needs pulsewidth nanosecond, high instantaneous voltage, and frequency repeatability Gauss pulse signal preferably, selects MARX circuit can well realize this requirement.
As shown in Figure 1, receiving trap is by balancing diode sampling gate circuit 102, sampling hold circuit 103 and butterfly antenna 101 form, the square-wave signal that microprocessor 301 produces is after digital delay circuit 302, generation can with the symmetrical sampling pulse 104 of equal time spacing movement, then sampling gate 102 is input to, the signal that the frequency that butterfly antenna 101 obtains is higher is converted to slow signal after sampling gate 102, finally be sent to sampling maintenance 103, signal higher for frequency is converted into the lower signal of frequency by this circuit, the requirement of system to AD sampling rate can be reduced, thus saving device cost.
As shown in Figure 1, harvester by bandpass filtering 303, time become amplifying circuit 304, microprocessor 301, AD circuit 305, embedded board 306 and GPS module 308 form.Bandwidth-limited circuit 303 can filter the low frequency and high-frequency signal that exist in slow signal well, thus reduces the requirement of systems versus software filtering.
As shown in Figure 1, GPS module provides the geographical location information of ground penetrating radar equipment in measuring process, and the every track data one_to_one corresponding measured with radar equipment, thus avoid the geography information by manual record radar equipment, reduce the workload of operating personnel.
As shown in Figure 1, time become amplifying circuit according to timing node, one useful signal can be divided into some sections (can arrange hop count as required), according to the size of signal voltage value in timing node, different gain factor is set.As in one useful signal, data voltage more close to top layer is larger, and the data voltage more arriving deep layer is less, traditional mode adopts high-resolution AD device, realize the extraction of feeble signal, and when adopting, become amplifying circuit, the faint signal of script can be amplified to certain magnitude of voltage, thus reduce system to the requirement of a/d resolution.
Analyzing and processing and display device are made up of the software module on PC 400, and this software mainly realizes network bottom layer agreement, the extraction of valid data and the display of X-Y scheme.
These are only specific embodiment of the utility model, but technical characteristic of the present utility model is not limited thereto.Any based on the utility model, for realizing substantially identical technique effect, done ground simple change, equivalent replacement or modification etc., be all covered by among protection domain of the present utility model.
Claims (10)
1., based on an active ground penetrating radar system for broadband burst pulse electromagnetic wave technology, comprise emitter, receiving trap, harvester and APU; It is characterized in that: described emitter is made up of MARX circuit and butterfly antenna; Receiving trap is made up of butterfly antenna, equivalent sampling gate circuit and sampling hold circuit; Harvester by bandpass filtering, time become amplifying circuit, microprocessor, AD circuit, embedded board and GPS module form; Harvester is connected by electrical cable with emitter, receiving trap; Harvester and APU exchange data; Harvester provides time sequential pulse for emitter and receiving trap.
2. active ground penetrating radar system according to claim 1, is characterized in that: harvester and APU adopt cable network to carry out exchanges data, or carry out the exchange of data after being changed by wireless router.
3. active ground penetrating radar system according to claim 1, is characterized in that: the square wave frequency that the microprocessor in described harvester produces is adjustable, for emitter and receiving trap provide time sequential pulse.
4. active ground penetrating radar system according to claim 1, is characterized in that: also comprise absorbing material and shielding box, and absorbing material loads in shielding box, and the butterfly antenna of emitter and the butterfly antenna of harvester are emitted on the lowermost end of shielding box side by side.
5. the active ground penetrating radar system according to claim 1 or 4, is characterized in that: the MARX circuit of emitter is vertical with butterfly antenna to be placed, and the equivalent sampling gate circuit of receiving trap is placed with sampling hold circuit is vertical with butterfly antenna.
6. the active ground penetrating radar system according to claim 1 or 4, it is characterized in that: the MARX circuit of harvester separates with the equivalent sampling gate circuit of receiving trap and sampling hold circuit and loads in absorbing material, centre aluminium flake separates, the circuit board of harvester is fixed on shielding box upper end, and wherein harvester is connected by electrical cable with emitter and receiving trap.
7. active ground penetrating radar system according to claim 1, is characterized in that: the same original signal that the input signal of MARX circuit and the input signal of sampling gate circuit provide for microprocessor.
8. active ground penetrating radar system according to claim 1, is characterized in that: microprocessor realizes the control of investigation depth by control figure delay circuit.
9. active ground penetrating radar system according to claim 1, is characterized in that: the butterfly antenna of transmitting and the butterfly antenna of reception are same size.
10. active ground penetrating radar system according to claim 1, is characterized in that: GPS module provides the geographic location signal of ground penetrating radar equipment in measuring process, and corresponding with the data that radar equipment is measured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201420687036.7U CN204347243U (en) | 2014-11-17 | 2014-11-17 | Based on the active ground penetrating radar system of broadband burst pulse electromagnetic wave technology |
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| CN201420687036.7U CN204347243U (en) | 2014-11-17 | 2014-11-17 | Based on the active ground penetrating radar system of broadband burst pulse electromagnetic wave technology |
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| CN204347243U true CN204347243U (en) | 2015-05-20 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106405660A (en) * | 2016-08-26 | 2017-02-15 | 国脉科技股份有限公司 | Buried depth detecting device and method of communication pipeline |
| CN108549301A (en) * | 2018-06-11 | 2018-09-18 | 南京邮电大学南通研究院有限公司 | A kind of ultra-wideband ground-penetrating radar (uw-gpr) control system |
| CN113030957A (en) * | 2021-03-09 | 2021-06-25 | 国网山东省电力公司济南供电公司 | Novel underground cable detection radar |
-
2014
- 2014-11-17 CN CN201420687036.7U patent/CN204347243U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106405660A (en) * | 2016-08-26 | 2017-02-15 | 国脉科技股份有限公司 | Buried depth detecting device and method of communication pipeline |
| CN108549301A (en) * | 2018-06-11 | 2018-09-18 | 南京邮电大学南通研究院有限公司 | A kind of ultra-wideband ground-penetrating radar (uw-gpr) control system |
| WO2019237732A1 (en) * | 2018-06-11 | 2019-12-19 | 南京邮电大学南通研究院有限公司 | Control system for ultra-wideband ground-penetrating radar |
| US11609323B2 (en) | 2018-06-11 | 2023-03-21 | Nantong Institute of Nanjing University of Posts and Telecommunications Co., Ltd. | Ultra-wideband ground penetrating radar control system |
| CN113030957A (en) * | 2021-03-09 | 2021-06-25 | 国网山东省电力公司济南供电公司 | Novel underground cable detection radar |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 430074 Hubei Province, Wuhan city Hongshan District Luoyu Road No. 626 East Fairview building A901 Patentee after: Tian Rui geophysical technology (Wuhan) Limited by Share Ltd Address before: 430074 Hubei Province, Wuhan city Hongshan District Luoyu Road No. 626 East Fairview building A901 Patentee before: WUHAN TIANRUI ZHENGDA TECHNOLOGY CO., LTD. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150520 Termination date: 20191117 |