CN103308951B - The control system of transient electromagnetic signal acquisition instrument of handheld pseudo random - Google Patents
The control system of transient electromagnetic signal acquisition instrument of handheld pseudo random Download PDFInfo
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Abstract
The present invention relates to a kind of control system and method for operating of transient electromagnetic signal acquisition instrument of handheld pseudo random, comprise center-control and processing module, signal conversion module, data memory module, synchronization module and touch liquid crystal display module; The core of center-control and processing module is on-site programmable gate array FPGA device, the control of completion system and the process of data; Signal conversion module transfers the simulating signal of reception to digital signal; The electromagnetic data that data memory module record gathers and result of calculation; Synchronization module is used for the synchronous of Acquisition Instrument and transmitter; Touch liquid crystal display module, for realizing the setting of system operating mode and parameter, shows the data and result of calculation that gather.This control system is arranged on handheld electromagnetic signal sampler, volume is little, data processing speed is fast, low in energy consumption, the method of operating of system is easy, and can realize the collection of pseudorandom electromagnetic signal and transient electromagnetic signal and the real-time process of data, scene can obtain every exploration parameter.<!--1-->
Description
Technical field
The present invention relates to a kind of control system and method for operating of transient electromagnetic signal acquisition instrument of handheld pseudo random, belong to geophysical exploration technology of instrument and meter field.
Background technology
Electromagnetic exploration instrument makes it at prospecting petroleum gas and coal field geology structure owing to having good practicality and high efficiency, find metal and non-metal mineral resources, be widely applied in the work such as hydrological engineering geology, but existing electromagnetic prospecting instruments due to volume large, complicated operation, data computing can not be realized after data acquisition simultaneously, therefore application is restricted, as the prediction in geologic hazard among a small circle, when urban environment and building foundation and underground pipeline layout condition survey etc. need to apply electromagnetic exploration instrument, all need to develop a kind of compact, easy to operate, low in energy consumption, the control system of the handheld electromagnetic signal sampler that data processing speed is fast.
Electromagnetic surveying instrument comprises transmitter, Acquisition Instrument and power-supply system.Control and disposal system is provided with in Acquisition Instrument.Control in the Acquisition Instrument of existing design and the typical control system scheme of disposal system: only adopt microprocessor; CPLD (CPLD) is combined with microprocessor; Single-chip microcomputer or microprocessor are combined with FPGA.When adopting microprocessor as unique control and disposal system, because all performance elements are all completed by a master control system program, execution speed is slow, and arithmetic capability is more weak, and the system function module that can support is less.CPLD is combined with microprocessor or FPGA and microprocessor are combined as control system, solve the problem that when increasing functional unit in the controls, microprocessor data acquisition rate reduces, execution speed is slack-off, as domestic in October, 2012 invention disclosed application " mine transient electromagnetic instrument and transient electromagnetic signal processing method " and " a kind of Transient Electromagnetic Apparatus receives acquisition system and method ", be all that CPLD and the microprocessor of employing is combined as control system; But adopt the mode of multi-controller chip to add the complexity of control system, power consumption and volume, be unfavorable for that hand-held designs, this kind of design only possesses the acquisition function of data, and do not possess the real-time processing capacity of field data, the data gathered will take back process, or adopt power consumption and the larger industrial computer of volume to complete data processing, on an electromagnetic signal acquisition instrument, the collection of frequency field pseudorandom electromagnetic signal and time domain transient signal can not be realized simultaneously.
In November, 2012 invention disclosed application " wireless well ground pseudorandom monitoring device and monitoring method based on Zigbee ", control system then adopts FPGA and single-chip microcomputer, adopt the multi-chip framework mode be combined with microprocessor as CPLD, do not make full use of FPGA and have the advantage enriching logic, storer and multiplier resources, control system is complicated, power consumption is high, volume is large, the real-time process that bring difficulty to hand-held design, single-chip microcomputer arithmetic speed is slow, complex data can not be realized.
Summary of the invention
An object of the present invention be in order to solve existing electromagnetic prospecting instruments due to volume large, complicated operation, the deficiency of data computing can not be realized after data acquisition simultaneously, and the control system of a kind of compact, the transient electromagnetic signal acquisition instrument of handheld pseudo random that easy to operate, low in energy consumption, data processing speed is fast is provided, on an electromagnetic signal acquisition instrument, the collection of frequency field pseudorandom electromagnetic signal and time domain transient signal can be realized simultaneously.
Two of object of the present invention is to provide a kind of method of operating applying the control system of above-mentioned transient electromagnetic signal acquisition instrument of handheld pseudo random.
For achieving the above object, the technical solution used in the present invention is: the control system providing a kind of transient electromagnetic signal acquisition instrument of handheld pseudo random, and control system comprises center-control and processing module, signal conversion module, data memory module, synchronization module and touch liquid crystal display module; Described control system is arranged in transient electromagnetic signal acquisition instrument of handheld pseudo random;
Described center-control and processing module, respectively with signal conversion module, data memory module with touch liquid crystal display module is two-way is electrically connected, are electrically connected with synchronization module;
Described center-control and processing module are used for the control of completion system and the process of data, containing on-site programmable gate array FPGA device and periphery configure chip thereof and program storage, the embedded software core processor be provided with by on-site programmable gate array FPGA device inside, peripheral hardware steering logic unit and digital signal processor DSP, worked in coordination with the collection of electromagnetic signal and the process of data;
Described signal conversion module is used for the reception simulating signal through amplification, filtering to be converted to digital signal;
Described data memory module adopts high speed storing controller, and storage medium supports Large Copacity pocket memory, and data memory module is used for electromagnetic data and the data result of calculation of register system collection;
Described synchronization module adopts global position system GPS module and/or Beidou satellite navigation system COMPASS module, for realizing the synchronous of Acquisition Instrument and transmitter;
Described touch liquid crystal display module adopts electric resistance touch-control LCDs, for realizing the setting of system operating mode and parameter, shows the data and data result of calculation that collect;
The embedded software core processor of described on-site programmable gate array FPGA device inside adopts NiosII soft-core processor or MIPS soft-core processor or ARM soft-core processor, described embedded software core processor is used for the process that the collection of control signal modular converter receives simulating signal, control data memory module selection memory, data storage location and storage format, control is mutual with touch liquid crystal display module; The peripheral hardware steering logic unit of described inside adopts Verilog language or VHDL language to be write as, for the setting of signal conversion module duty and the control of the course of work, and the channel selecting of input simulating signal, programming amplifying, filtering control; The DSP soft-core processor that the digital signal processor DSP of described inside adopts it embedded or adopt stone dsp processor, digital signal processor DSP is used for the process of image data and the calculating of every exploration parameter, and process is shown by touch liquid crystal display module with the result calculated.
Described data memory module adopts high speed storing controller, and storage medium supports Large Copacity pocket memory, as SD card and USB interface storer.
Described synchronization module adopts GPS module and/or COMPASS module, to realize the synchronous of Acquisition Instrument and transmitter, the signal that the signal keeping transmitter to send and Acquisition Instrument receive synchronously is the necessary condition ensureing that whole system normally works, synchronization module signal data is after soft-core processor is resolved, combined high precision quartz oscillator, for external logic control module provides work clock.
Described touch liquid crystal display module adopts electric resistance touch-control LCDs, capacitance touching control LCDs of comparing, and touch screens low price, power consumption are low; And when environment temperature, humidity, environment of electric field change, the drift of capacitance plate can be caused, cause location inaccurate, touch screens is better to environmental suitability, is applicable to field studies.
The present invention can be formed the center-control and processing module that control native system core with a slice on-site programmable gate array FPGA device and a small amount of peripheral circuit, owing to taking full advantage of the abundant logical resource of on-site programmable gate array FPGA device inside and memory resource, native system hardware software design is reached minimize, there is the feature of strong, the with low cost and compact of hardware circuit module, antijamming capability, be applicable to handheld portable application.
The present invention adopts the embedded soft-core processor of on-site programmable gate array FPGA device as one of processor core, as NiosII soft-core processor or MIPS soft-core processor or ARM soft-core processor, all have volume little, can cutting, reconfigurable feature, the performance of soft-core processor can carry out cutting according to practical application, the system of customized user oneself; Soft-core processor, compared with fixing processor system, possesses higher performance under identical clock rate; Soft-core processor has abundant IP kernel bank, facilitates user to design, and effectively improves the arithmetic capability of system.Soft-core processor dirigibility is strong, the design cycle is shorter, and can extend product life span by upgrading, utilizes soft-core processor can be reduced costs by the optimization of the more massive system integration, FPGA/CPU.
The soft core of digital signal processor that the on-site programmable gate array FPGA device that the present invention adopts is embedded or digital signal processor stone all possess excellent performance, relative to the system that on-site programmable gate array FPGA device is combined with separate digital signal processor chips, the complexity of circuit design can be reduced, decrease device, reduce costs, adopt FPGA also to have the speed advantage of Synchronous data dispose and stream line operation.
Control system of the present invention can realize real-time process, the calculating of data acquisition and data, data are after the digital signal processor processes that on-site programmable gate array FPGA device is embedded, result is directly shown by Touch-control liquid crystal display screen, the data gathered do not need to take back process, working site data processing does not need the industrial computer carrying heaviness, power consumption, facilitate the operation of correlation engineering technician, reduce working strength.
Adopt control system framework of the present invention can realize the acquisition function of frequency field pseudorandom electromagnetic signal and time domain transient signal, correlation engineering technician only needs can switched system mode of operation by Touch-control liquid crystal display screen simultaneously.Transmitter can select different capacity, dissimilar according to the needs that reality is explored, and has widened application surface, adopts a electromagnetic signal acquisition instrument can complete different detection needs.
The present invention also provides a kind of method of operating applying described transient electromagnetic signal acquisition instrument of handheld pseudo random control system, operates as follows:
(1) the type, according to transmitter transmitted and working method, the touch liquid crystal display module selective system mode of operation by Acquisition Instrument: namely select frequency domain electromagnetic methods detection operations pattern, gather pseudorandom electromagnetic signal; Or select time territory electromagnetic prospecting mode of operation, gather transient electromagnetic signal;
(2), central authorities' process and control module switch control model according to selected system operating mode, the digital signal processor DSP of on-site programmable gate array FPGA device inside in central authorities' process and control module takes corresponding data processing and computing method: if frequency domain electromagnetic methods detection operations pattern, then digital signal processor DSP is taked to comprise filtering, related operation, Fourier transform, spectrum analysis data processing method; If TDEM investigation and prospecting pattern, then digital signal processor DSP is taked to comprise filtering, related operation, synchronous superposition of data disposal route; Digital signal processor DSP utilizes the data after process to calculate can the resistivity prospecting parameter of apparent resistivity, charge rate, frequency dispersion rate and needs, and user is seletion calculation and display resistivity prospecting parameter as required;
(3), by user on touch liquid crystal display module, select the size receiving square, the type of transmitter, the size of X, the Y sending square is set, the number of turn of coil, forward delay interval, antenna time delay, gain mode, gain size, if above-mentioned running parameter user does not set, according to default parameters work;
(4), by user on touch liquid crystal display module, select acquisition channel, acquisition rate and drainage pattern, system according to select running parameter, Gather and input electromagnetic signal; Reception simulating signal through amplification, filtering is converted to digital signal by signal conversion module;
(5), data memory module is according to the electromagnetic data of the system operating mode setting recording collection selected and exploration parameter result of calculation;
(6), center-control and processing module read historical data and result, and show at touch liquid crystal display module from data memory module.
Control system and the method for operating of transient electromagnetic signal acquisition instrument of handheld pseudo random of the present invention compared with prior art have the following advantages:
1, the present invention can be formed center-control and the processing module of control system core with a slice on-site programmable gate array FPGA device and a small amount of peripheral circuit, the hardware software design of system is reached minimize, there is the feature of strong, the with low cost and compact of hardware circuit module, antijamming capability, be adapted at applying in handheld portable control system.
2, the framework of control system of the present invention can realize the acquisition function of frequency field pseudorandom electromagnetic signal and time domain transient signal simultaneously, has widened the application surface of Acquisition Instrument, adopts a electromagnetic signal acquisition instrument can complete different detection needs.
3, control system of the present invention can realize real-time process and the calculating of data acquisition and data, data are after the digital signal processor that on-site programmable gate array FPGA device is embedded processes in real time, result is directly shown by Touch-control liquid crystal display screen, facilitate the operation of correlation engineering technician, reduce working strength.
Accompanying drawing explanation
Fig. 1 is the Control system architecture schematic diagram of transient electromagnetic signal acquisition instrument of handheld pseudo random of the present invention.
Fig. 2 is the on-site programmable gate array FPGA device inside processor structure schematic diagram of control system of the present invention.
Embodiment
Below in conjunction with drawings and Examples, control system of the present invention and method of operating are described in further detail.
Embodiment 1: the control system of a kind of transient electromagnetic signal acquisition instrument of handheld pseudo random of the present invention, as shown in Figure 1, control system comprises center-control and processing module to its structure, signal conversion module, data memory module, synchronization module, touch liquid crystal display module.Described control system is arranged on handheld electromagnetic signal sampler; Described center-control and processing module respectively with signal conversion module, data memory module and the two-way electrical connection of touch liquid crystal display module, center-control and processing module are also electrically connected with synchronization module.
Described center-control and processing module contain on-site programmable gate array FPGA device and periphery configure chip thereof and program storage.Described on-site programmable gate array FPGA device model elects EP3C40Q240 chip as, and its internal processor structure is see Fig. 2.Embedded software core processor, peripheral hardware steering logic unit and digital signal processor DSP three processor cores are contained in the inside of FPGA FPGA, described embedded software core processor adopts NiosII soft-core processor, NiosII is 32 soft-core processors, work clock can reach 100MHz, processing speed is fast, can adopt User Defined IP with the interface of peripheral hardware, self-defined IP adopts FPGA hardware implementing, optimization system processing power.Described peripheral hardware steering logic unit adopts Verilog language to be write as, for the setting of signal acquisition module duty and the control of the course of work, and for input simulating signal channel selecting, programming amplifying, filtering control.Described digital signal processor adopts DSP soft-core processor.Three processors are shared out the work and helped one another, and jointly complete collection and the data processing of electromagnetic signal.
Described signal conversion module is used for the reception simulating signal through amplification, filtering to be converted to digital signal.
Described data memory module adopts integrated document storage management controller CH376, the electromagnetic data gathered for register system and data result of calculation.CH376 internal USB agreement and FAT file system firmware, storage medium supports Large Copacity pocket memory, as SD card and USB interface storer.The memory rate of data memory module is fixing, the resistivity prospecting parameter that the acquired electromagnetic data gathered or calculating obtain is after FPGA device periphery data-carrier store StaticRAM (SRAM) buffer memory, with fixed rate write storage medium, when reading historical data, data read in SRAM with fixed rate, are then sent to the display of touch liquid crystal display module.
Described synchronization module adopts GPS and COMPASS bimodulus module, and to realize the synchronous of Acquisition Instrument and transmitter, synchronization module signal data is resolved through soft-core processor, combined high precision quartz oscillator, for external logic control module provides work clock.
Described touch liquid crystal display module adopts electric resistance touch-control LCDs, for realizing the setting of system operating mode and parameter, shows the data and data result of calculation that collect.
The process of control system electromagnetic signal acquisition of the present invention process control and data completes in a slice FPGA device, and the resource of device obtains utilizing the most fully, and performance reaches optimum, and data processing speed is fast, compact, low in energy consumption.
The method of operating of the transient electromagnetic signal acquisition instrument of handheld pseudo random control system described in Application Example 1, operates as follows:
(1) the type, according to transmitter transmitted and working method, the touch liquid crystal display module selective system mode of operation by Acquisition Instrument: the mode of operation of establishing the electromagnetic prospecting of select time territory, gathers transient electromagnetic signal.
(2), system operating mode is switched to the mode of operation of TDEM method of exploration by central authorities' process and control module according to done selection, the digital signal processor DSP of on-site programmable gate array FPGA device inside in central authorities' process and control module takes corresponding data processing and computing method: comprise digital filtering, related operation, the data processing methods such as synchronous superposition, digital signal processor DSP utilizes the data after process to calculate can apparent resistivity, charge rate, the resistivity prospecting parameters such as frequency dispersion rate, user can the resistivity prospecting parameter of seletion calculation and display as required.
(3), by user on touch liquid crystal display module, select the size receiving square, the type of transmitter, the size of X, the Y sending square is set, the number of turn of coil, forward delay interval, antenna time delay, gain mode, gain size etc., if above-mentioned running parameter user does not set, according to default parameters work.
(4), by user on touch liquid crystal display module, select acquisition channel, acquisition rate and drainage pattern, system according to select running parameter, Gather and input electromagnetic signal; Reception simulating signal through amplification, filtering is converted to digital signal by signal conversion module.
(5), data memory module is according to the electromagnetic data of the system operating mode setting recording collection selected and exploration parameter result of calculation.
(6), center-control and processing module read historical data and result, and show at touch liquid crystal display module from data memory module.
Embodiment 2: the control system of a kind of transient electromagnetic signal acquisition instrument of handheld pseudo random of the present invention, its structure as shown in Figure 1, comprises center-control and processing module, signal conversion module, data memory module, synchronization module, touch liquid crystal display module.Unlike in center-control and processing module, FPGA FPGA device chip model elects EP4SGX230 as, and embedded software core processor adopts ARMCortex soft-core processor; Inner peripheral hardware steering logic unit adopts VHDL language to be write as, and embedded digital signal processor DSP adopts stone dsp processor, and described synchronization module adopts Beidou satellite navigation system COMPASS module.Described touch liquid crystal display module adopts industrial electro resistive touch screen.
The method of operating of the transient electromagnetic signal acquisition instrument of handheld pseudo random control system described in Application Example 2, operates as follows:
(1) the type, according to transmitter transmitted and working method, the touch liquid crystal display module selective system mode of operation by Acquisition Instrument: establish the mode of operation selecting frequency domain electromagnetic methods detection, gathers pseudorandom electromagnetic signal.
(2), system operating mode to be switched to according to done selection the mode of operation that frequency domain electromagnetic methods detects by central authorities' process and control module, central authorities' process takes corresponding data processing and computing method with the digital signal processor of the FPGA inside in control module: comprise filtering, related operation, Fourier transform, spectrum analysis data processing method, and the calculating of data after digital signal processor process can the resistivity prospecting parameter such as apparent resistivity, charge rate, frequency dispersion rate.User can the resistivity prospecting parameter of seletion calculation and display as required.
(3), by user in Touch-control liquid crystal display screen, select the size receiving square, the type of transmitter, arrange the size of X, the Y sending square, the number of turn of coil, gain mode, gain size etc., if above-mentioned running parameter user does not set, according to default parameters work.
(4), by user in Touch-control liquid crystal display screen, select acquisition channel, acquisition rate and drainage pattern, system according to select running parameter, Gather and input electromagnetic signal.
(5), (6) operation steps with embodiment 1.
This control system is arranged on handheld electromagnetic signal sampler, compact, data processing speed are fast, low in energy consumption, the method of operating of system is easy, and can realize the collection of pseudorandom electromagnetic signal and transient electromagnetic signal and the real-time process of data, scene can obtain every exploration parameter simultaneously.
Claims (1)
1. a control system for transient electromagnetic signal acquisition instrument of handheld pseudo random, control system comprises center-control and processing module, signal conversion module, data memory module, synchronization module and touch liquid crystal display module; It is characterized in that: described control system is arranged in transient electromagnetic signal acquisition instrument of handheld pseudo random;
Described center-control and processing module, respectively with signal conversion module, data memory module with touch liquid crystal display module is two-way is electrically connected, are electrically connected with synchronization module;
Described center-control and processing module are used for the control of completion system and the process of data, containing on-site programmable gate array FPGA device and periphery configure chip thereof and program storage, the embedded software core processor be provided with by on-site programmable gate array FPGA device inside, peripheral hardware steering logic unit and digital signal processor DSP, worked in coordination with the collection of electromagnetic signal and the process of data;
Described signal conversion module is used for the reception simulating signal through amplification, filtering to be converted to digital signal;
Described data memory module adopts high speed storing controller, and storage medium supports Large Copacity pocket memory, and data memory module is used for electromagnetic data and the data result of calculation of register system collection;
Described synchronization module adopts global position system GPS module and/or Beidou satellite navigation system COMPASS module, for realizing the synchronous of Acquisition Instrument and transmitter;
Described touch liquid crystal display module adopts electric resistance touch-control LCDs, for realizing the setting of system operating mode and parameter, shows the data and data result of calculation that collect;
The embedded software core processor of described on-site programmable gate array FPGA device inside adopts NiosII soft-core processor or MIPS soft-core processor or ARM soft-core processor, described embedded software core processor is used for the process that the collection of control signal modular converter receives simulating signal, control data memory module selection memory, data storage location and storage format, control is mutual with touch liquid crystal display module; The peripheral hardware steering logic unit of described inside adopts Verilog language or VHDL language to be write as, for the setting of signal conversion module duty and the control of the course of work, and the channel selecting of input simulating signal, programming amplifying, filtering control; The DSP soft-core processor that the digital signal processor DSP of described inside adopts it embedded or adopt stone dsp processor, digital signal processor DSP is used for the process of image data and the calculating of every exploration parameter, and process is shown by touch liquid crystal display module with the result calculated;
The method of operating of above-mentioned transient electromagnetic signal acquisition instrument of handheld pseudo random control system, operates as follows:
(1) the type, according to transmitter transmitted and working method, the touch liquid crystal display module selective system mode of operation by Acquisition Instrument: namely select frequency domain electromagnetic methods detection operations pattern, gather pseudorandom electromagnetic signal; Or select time territory electromagnetic prospecting mode of operation, gather transient electromagnetic signal;
(2), central authorities' process and control module switch control model according to selected system operating mode, the digital signal processor DSP of on-site programmable gate array FPGA device inside in central authorities' process and control module takes corresponding data processing and computing method: if frequency domain electromagnetic methods detection operations pattern, then digital signal processor DSP is taked to comprise filtering, related operation, Fourier transform, spectrum analysis data processing method; If TDEM investigation and prospecting pattern, then digital signal processor DSP is taked to comprise filtering, related operation, synchronous superposition of data disposal route; Digital signal processor DSP utilizes the data after process to calculate can the resistivity prospecting parameter of apparent resistivity, charge rate, frequency dispersion rate and needs, and user is seletion calculation and display resistivity prospecting parameter as required;
(3), by user on touch liquid crystal display module, select the size receiving square, the type of transmitter, the size of X, the Y sending square is set, the number of turn of coil, forward delay interval, antenna time delay, gain mode, gain size, if above-mentioned running parameter user does not set, according to default parameters work;
(4), by user on touch liquid crystal display module, select acquisition channel, acquisition rate and drainage pattern, system according to select running parameter, Gather and input electromagnetic signal; Reception simulating signal through amplification, filtering is converted to digital signal by signal conversion module;
(5), data memory module is according to the electromagnetic data of the system operating mode setting recording collection selected and exploration parameter result of calculation;
(6), center-control and processing module read historical data and result, and show at touch liquid crystal display module from data memory module.
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| CN103777247B (en) * | 2014-02-18 | 2017-01-18 | 北京市市政工程研究院 | Transient electromagnetic radar detection system and detection method |
| CN106199665B (en) | 2016-07-01 | 2017-12-19 | 中国科学院地质与地球物理研究所 | A kind of distributed electrical magnetic method instrument synchronization system and method based on big-dipper satellite |
| CN107290757A (en) * | 2017-06-23 | 2017-10-24 | 南京康派电子有限公司 | A kind of portable Beidou communication emergency terminal of low-power consumption |
| CN109031438A (en) * | 2018-06-15 | 2018-12-18 | 中国科学院地质与地球物理研究所 | Anti-interference method and system for multi-channel receiver |
| CN109164495B (en) * | 2018-11-02 | 2024-01-23 | 湖南继善高科技有限公司 | Oil gas fracturing electromagnetic data real-time acquisition device |
| CN109408456B (en) * | 2018-12-07 | 2023-08-29 | 中国地质大学（武汉） | S905D chip and STM32 chip based cooperative hardware circuit |
| CN113945984A (en) * | 2021-10-22 | 2022-01-18 | 成都理工大学 | Rock-soil mass electromagnetic signal processing method and system |
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