CN103308951A - Control system and operation method of transient electromagnetic signal acquisition instrument of handheld pseudo random - Google Patents
Control system and operation method of transient electromagnetic signal acquisition instrument of handheld pseudo random Download PDFInfo
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Abstract
The invention relates to a control system and an operation method of a transient electromagnetic signal acquisition instrument of a handheld pseudo random. The control system comprises a central control and processing module, a signal conversion module, a data memory module, a synchronous module and a touch liquid crystal display module, wherein the core of the central control and processing module is an FPGA (Field-Programmable Gate Array) and is used for completing system control and data processing; the signal conversion module is used for converting a received analog signal to a digital signal; the data memory module is used for recording acquired electromagnetic data and a computed result; the synchronous module is used for synchronizing the acquisition instrument and a transmitter; and the touch liquid crystal display module is used for realizing the work mode of the system and the set of parameters and displaying the acquired data and the computed result. The control system is installed on the handheld electromagnetic signal acquisition instrument and has the advantages of small size, high data processing speed and low power consumption, the operation method of the system is simple and convenient, the acquisition of electromagnetic signals of the pseudo random and transient electromagnetic signals can be realized, and various exploration parameters can be obtained on site.
Description
Technical field
The present invention relates to a kind of control system and method for operating of hand-held pseudorandom transient electromagnetic signal sampler, belong to geophysical exploration technology of instrument and meter field.
Background technology
The electromagnetic method detection instrument makes it at prospecting petroleum gas and coal field geology structure owing to having good practicality and high efficiency, seek metal and nonmetallic minerals, obtained widespread use in the work such as hydrological engineering geology, but existing electromagnetic prospecting instrument is because volume is big, complicated operation, can not realize the data computation processing after the data acquisition simultaneously, therefore use and be restricted, as in the prediction of geologic hazard among a small circle, when urban environment and building foundation and the investigation of underground utilities laying condition etc. needed to use the electromagnetic method detection instrument, it was small and exquisite all to need to develop a kind of volume, easy to operate, low in energy consumption, the control system of the hand-held electromagnetic signal acquisition instrument that data processing speed is fast.
The electromagnetic surveying instrument comprises transmitter, Acquisition Instrument and power-supply system.In Acquisition Instrument, be provided with control and disposal system.Control and the typical control system scheme of disposal system in the Acquisition Instrument of existing design: 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 finished by a master control system program, execution speed is slow, arithmetic capability a little less than, the system function module that can support is less.CPLD is combined with microprocessor or FPGA is combined as control system with microprocessor, the reduction of microprocessor data acquisition rate, the slack-off problem of execution speed when in control system, increasing functional unit have been solved, in October, 2012 invention disclosed application " mining Transient Electromagnetic Apparatus and transient electromagnetic signal processing method " and " a kind of Transient Electromagnetic Apparatus receives acquisition system and method ", all be that the CPLD that adopts is combined as control system with microprocessor as domestic; But the mode that adopts the multi-controller chip has increased complexity, power consumption and the volume of control system, be unfavorable for the hand-held design, this class design only possesses the acquisition function of data, and do not possess the real-time processing capacity of field data, the data of gathering will be taken back processing, perhaps adopt the bigger industrial computer of power consumption and volume to finish data and handle, can not on an electromagnetic signal acquisition instrument, realize the collection of frequency field pseudorandom electromagnetic signal and time domain transient signal simultaneously.
In November, 2012 invention disclosed application " based on wireless well ground pseudorandom monitoring device and the monitoring method of Zigbee ", control system then adopts FPGA and single-chip microcomputer, the multi-chip framework mode that employing is combined with microprocessor as CPLD, do not take full advantage of FPGA and have the advantage of enriching logic, storer and multiplier resources, the control system complexity, the power consumption height, volume is big, bring difficulty to hand-held design, the real-time processing that the single-chip microcomputer arithmetic speed is slow, can not realize complex data.
Summary of the invention
One of purpose of the present invention is in order to solve existing electromagnetic prospecting instrument because volume is big, complicated operation, can not realize the deficiency that data computation is handled after the data acquisition simultaneously, and the control system of the hand-held pseudorandom transient electromagnetic signal sampler that a kind of volume is small and exquisite, easy to operate, low in energy consumption, data processing speed is fast is provided, can on an electromagnetic signal acquisition instrument, realize the collection of frequency field pseudorandom electromagnetic signal and time domain transient signal simultaneously.
Two of purpose of the present invention provides a kind of method of operating of using the control system of above-mentioned hand-held pseudorandom transient electromagnetic signal sampler.
For achieving the above object, the technical solution used in the present invention is: a kind of control system of hand-held pseudorandom transient electromagnetic signal sampler is provided, comprises central authorities' control and processing module, signal conversion module, data memory module, synchronization module and touch liquid crystal display module;
Described central authorities control and processing module respectively with signal conversion module, data memory module and the two-way electrical connection of touch liquid crystal display module, central authorities control and processing module also is electrically connected with synchronization module;
The control of described central authorities and processing module contain on-site programmable gate array FPGA device and peripheral configuring chip and program storage, the embedded soft-core processor, peripheral hardware steering logic unit and the digital signal processor DSP that are provided with by the on-site programmable gate array FPGA device inside, work in coordination with and finish the collection of electromagnetic signal and the processing of data, central authorities' control and processing module are used for finishing the control of system and the processing of data;
It will be digital signal through the reception analog signal conversion of amplification, filtering that described signal conversion module is used for;
Described data memory module adopts the high speed storing controller, the big capacity pocket memory of storage medium support, and data memory module is used for electromagnetic data and the data computation result that register system is gathered;
Described synchronization module adopts global position system GPS module and/or Beidou satellite navigation system COMPASS module, is used for realizing the synchronous of Acquisition Instrument and transmitter;
Described touch liquid crystal display module adopts the electric resistance touch-control LCDs, is used for realizing the setting of system works pattern and parameter, shows the data and the data computation result that collect.
The embedded soft-core processor of on-site programmable gate array FPGA device inside of the present invention adopts Nios II soft-core processor or MIPS soft-core processor or ARM soft-core processor, described soft-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 the touch liquid crystal display module; The peripheral hardware steering logic unit of described inside adopts Verilog language or VHDL language to be write as, is used for the setting of signal conversion module duty and the control of the course of work, and the control of importing the channel selecting of simulating signal, program control amplification, filtering; Described digital signal processor inside adopts its embedded DSP soft-core processor or adopts the stone dsp processor, digital signal processor is used for processing and every exploration CALCULATION OF PARAMETERS of image data, handles with result calculated to show by the touch liquid crystal display unit.
Described data memory module adopts the high speed storing controller, and the big capacity pocket memory of storage medium support is 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, keeping the signal of transmitter transmission and the signal of Acquisition Instrument reception is the necessary condition that guarantees the total system operate as normal synchronously, after the synchronization module signal data is resolved through soft-core processor, the combined high precision quartz oscillator is for the peripheral hardware logic control element provides work clock.
Described touch liquid crystal display module adopts the electric resistance touch-control LCDs, the capacitance touching control LCDs of comparing, and resistance shields low price, power consumption is low; And when environment temperature, humidity, when environment of electric field changes, can cause the drift of capacitance plate, cause the location inaccurate, the resistance screen is better to environmental suitability, is fit to field studies.
The present invention can constitute central authorities' control and the processing module of control native system core with a slice on-site programmable gate array FPGA device and a small amount of peripheral circuit, owing to taken full advantage of abundant logical resource and the memory resource of on-site programmable gate array FPGA device inside, the design of native system hardware and software has been reached to minimize, have hardware circuit moduleization, antijamming capability is strong, with low cost and volume is small and exquisite characteristics, be fit to handheld portable and use.
The present invention adopts the embedded soft-core processor of on-site programmable gate array FPGA device as one of processor core, as Nios II soft-core processor or MIPS soft-core processor or ARM soft-core processor, but all have the little cutting of volume, reconfigurable characteristics, the performance of soft-core processor can be carried out cutting according to practical application, the system of customized user oneself; Soft-core processor is compared with fixing processor system, possesses higher performance under identical clock rate; Soft-core processor has abundant IP kernel bank, makes things convenient for the user to design, and improves the arithmetic capability of system effectively.The soft-core processor dirigibility is strong, the design cycle is shorter, and can prolong the product life span by upgrading, utilizes soft-core processor to reduce cost by the optimization of the more massive system integration, FPGA/CPU.
The embedded soft nuclear of digital signal processor or the digital signal processor stone of on-site programmable gate array FPGA device that the present invention adopts all possesses good performance, design with the system that the independent digit signal processor chip is combined with respect to the on-site programmable gate array FPGA device, can reduce the complexity of circuit design, reduced device, reduce cost, adopt FPGA also to have the speed advantage of parallel data processing and stream line operation.
Control system of the present invention can realize real-time processing, the calculating of data acquisition and data, after data are passed through the embedded digital signal processor processes of on-site programmable gate array FPGA device, the result directly shows by the touch liquid crystal display screen, the data of gathering do not need to take back processing, the working site data are handled does not need to carry the industrial computer of heaviness, power consumption, make things convenient for correlation engineering technician's operation, reduced 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 simultaneously, correlation engineering technician only needs can the switched system mode of operation by the touch liquid crystal display screen.Transmitter can be selected different capacity, dissimilar according to the needs of reality exploration, has widened application surface, adopts a electromagnetic signal acquisition instrument can finish the different needs of surveying.
The present invention also provides a kind of method of operating of using described hand-held pseudorandom transient electromagnetic signal sampler control system, as follows operation:
⑴, the type and the working method that transmit according to transmitter are by the touch liquid crystal display module selective system mode of operation of Acquisition Instrument: namely select frequency domain electromagnetic methods detection operations pattern, gather the pseudorandom electromagnetic signal; Or select time territory electromagnetic prospecting mode of operation, gather the transient electromagnetic signal;
⑵, central authorities handle with control module according to selected system works pattern switching controls pattern, central authorities' processing takes corresponding data to handle and computing method with the FPGA digital signal processor inside in the control module: if frequency domain electromagnetic methods detection operations pattern, then digital signal processor takes to comprise filtering, related operation, Fourier transform, spectrum analysis data processing method; If TDEM investigation and prospecting pattern, then digital signal processor takes to comprise filtering, related operation, synchronous superposition of data disposal route; But the data computation apparent resistivity after digital signal processor by using is handled, charge rate, frequency dispersion rate and the resistivity prospecting parameter that needs, the user selects to calculate and show the resistivity prospecting parameter as required;
, by the size of user's selective reception square on the touch liquid crystal display screen, the type of transmitter arranges the X that sends square, the size of Y, the number of turn of coil, forward delay interval, antenna time-delay, gain mode, the gain size, described running parameter is not if the user sets then according to default parameters work;
⑷, select acquisition channel, acquisition rate and drainage pattern by the user at the touch liquid crystal display screen, the input electromagnetic signal is gathered according to the running parameter of selecting by system; Signal conversion module will be digital signal through the reception analog signal conversion of amplification, filtering;
⑸ electromagnetic data and exploration calculation of parameter result that, data memory module are gathered according to the system works pattern setting recording of selecting;
⑹, central authorities' control are read historical data and result with processing module, and are shown at the touch liquid crystal display unit from data memory module.
Control system and the method for operating of hand-held pseudorandom transient electromagnetic signal sampler of the present invention compared with prior art have the following advantages:
1, the present invention can constitute central authorities' 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 and software design of system has been reached to minimize, have hardware circuit moduleization, antijamming capability is strong, with low cost and volume is small and exquisite characteristics, be adapted at using in the handheld portable control system.
2, the framework of control system of the present invention can be realized 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 finish the different needs of surveying.
3, control system of the present invention can realize real-time processing and the calculating of data acquisition and data, after data are handled in real time through the embedded digital signal processor of on-site programmable gate array FPGA device, the result directly shows by the touch liquid crystal display screen, make things convenient for correlation engineering technician's operation, reduced working strength.
Description of drawings
Fig. 1 is the control system structural representation of hand-held pseudorandom transient electromagnetic signal sampler of the present invention.
Fig. 2 is the on-site programmable gate array FPGA device inside processor structure synoptic 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 hand-held pseudorandom transient electromagnetic signal sampler of the present invention, its structure comprise central authorities' control and processing module, signal conversion module, data memory module, synchronization module, touch liquid crystal display module as shown in Figure 1.Described central authorities control and processing module respectively with signal conversion module, data memory module and the two-way electrical connection of touch liquid crystal display module, central authorities control and processing module also is electrically connected with synchronization module.
The control of described central authorities and processing module contain on-site programmable gate array FPGA device and peripheral configuring chip and program storage.Described on-site programmable gate array FPGA device model is elected the EP3C40Q240 chip as, and its internal processor structure is referring to Fig. 2.Embedded soft-core processor, peripheral hardware steering logic unit and three processor cores of digital signal processor DSP are contained in the inside of FPGA FPGA, described embedded soft-core processor adopts Nios II soft-core processor, Nios II 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 to realize the optimization system processing power.Described peripheral hardware steering logic unit adopts the Verilog language to be write as, is used for the setting of signal acquisition module duty and the control of the course of work, and the control that is used for the channel selecting of input simulating signal, program control amplification, filtering.Described digital signal processor adopts the DSP soft-core processor.Three processors are shared out the work and helped one another, and finish collection and the data of electromagnetic signal jointly and handle.
It will be digital signal through the reception analog signal conversion of amplification, filtering that described signal conversion module is used for.
Described data memory module adopts integrated document storage management controller CH376, is used for electromagnetic data and data computation result that register system is gathered.CH376 internal USB agreement and FAT file system firmware, the big capacity pocket memory of storage medium support is as SD card and USB interface storer.The memory rate of data memory module is fixed, the resistivity prospecting parameter process FPGA device periphery data-carrier store Static RAM(SRAM that the acquired electromagnetic data of gathering or calculating obtain) behind the buffer memory, write storage medium with fixed rate, when reading historical data, data are read in SRAM with fixed rate, then are sent to the touch liquid crystal display module and show.
Described synchronization module adopts GPS and COMPASS bimodulus module, and to realize the synchronous of Acquisition Instrument and transmitter, the synchronization module signal data is resolved through soft-core processor, and the combined high precision quartz oscillator is for the peripheral hardware logic control element provides work clock.
Described touch liquid crystal display module adopts the electric resistance touch-control LCDs, is used for realizing the setting of system works pattern and parameter, shows the data and the data computation result that collect.
The processing of control system electromagnetic signal acquisition of the present invention process control and data is finished in a slice FPGA device, and the resource of device obtains the utilization of fullest, and it is optimum that performance reaches, and data processing speed is fast, volume is small and exquisite, low in energy consumption.
The method of operating of Application Example 1 described hand-held pseudorandom transient electromagnetic signal sampler control system, operation as follows:
⑴, the type and the working method that transmit according to transmitter are by the touch liquid crystal display module selective system mode of operation of Acquisition Instrument: establish the mode of operation of select time territory electromagnetic prospecting, gather the transient electromagnetic signal.
⑵, central authorities handle the mode of operation that according to the selection of doing the system works pattern is switched to the TDEM method of exploration with control module, central authorities' processing takes corresponding data to handle and computing method with the FPGA digital signal processor inside in the control module: comprise digital filtering, related operation, data processing methods such as stack synchronously, but the data computation apparent resistivity after digital signal processor by using is handled, charge rate, resistivity prospecting parameters such as frequency dispersion rate, the user can select the resistivity prospecting parameter calculating and show as required.
, by the size of user's selective reception square on the touch liquid crystal display screen, the type of transmitter arranges the X that sends square, the size of Y, the number of turn of coil, forward delay interval, antenna time-delay, gain mode, gain size etc., above-mentioned running parameter is not if the user sets then according to default parameters work.
⑷, select acquisition channel, acquisition rate and drainage pattern by the user at the touch liquid crystal display screen, the input electromagnetic signal is gathered according to the running parameter of selecting by system; Signal conversion module will be digital signal through the reception analog signal conversion of amplification, filtering.
⑸ electromagnetic data and exploration calculation of parameter result that, data memory module are gathered according to the system works pattern setting recording of selecting.
⑹, central authorities' control are read historical data and result with processing module, and are shown at the touch liquid crystal display unit from data memory module.
Embodiment 2: the control system of a kind of hand-held pseudorandom transient electromagnetic signal sampler of the present invention, its structure comprise central authorities' control and processing module, signal conversion module, data memory module, synchronization module, touch liquid crystal display module as shown in Figure 1.Different is that FPGA FPGA device chip model is elected EP4SGX230 as in central authorities' control and the processing module, and embedded soft-core processor adopts ARM Cortex soft-core processor; Inner peripheral hardware steering logic unit adopts VHDL language to be write as, and embedded digital signal processor DSP adopts the stone dsp processor, and described synchronization module adopts Beidou satellite navigation system COMPASS module.Described touch liquid crystal display module adopts industrial resistance type touch control screen.
The method of operating of Application Example 2 described hand-held pseudorandom transient electromagnetic signal sampler control system, operation as follows:
⑴, the type and the working method that transmit according to transmitter are by the touch liquid crystal display module selective system mode of operation of Acquisition Instrument: establish the mode of operation of selecting frequency domain electromagnetic methods to survey, gather the pseudorandom electromagnetic signal.
⑵, central authorities handle with control module and according to the selection of doing the system works pattern are switched to the mode of operation that frequency domain electromagnetic methods is surveyed, central authorities' processing takes corresponding data to handle and computing method with the FPGA digital signal processor inside in the control module: comprise filtering, related operation, Fourier transform, spectrum analysis data processing method, but resistivity prospecting parameters such as the data computation apparent resistivity after digital signal processor by using is handled, charge rate, frequency dispersion rate.The user can select the resistivity prospecting parameter calculating and show as required.
, by the size of user's selective reception square on the touch liquid crystal display screen, the type of transmitter arranges the X that sends square, the size of Y, the number of turn of coil, gain mode, gain size etc., above-mentioned running parameter is not if the user sets then according to default parameters work.
⑷, select acquisition channel, acquisition rate and drainage pattern by the user at the touch liquid crystal display screen, the input electromagnetic signal is gathered according to the running parameter of selecting by system.
⑸, ⑹ operation steps are with embodiment 1.
This control system is installed on the hand-held electromagnetic signal acquisition instrument, volume is small and exquisite, data processing speed is fast, low in energy consumption, the method of operating of system is easy, can realize the collection of pseudorandom electromagnetic signal and transient electromagnetic signal and the real-time processing of data simultaneously, and the scene can obtain every exploration parameter.
Claims (3)
1. the control system of a hand-held pseudorandom transient electromagnetic signal sampler comprises central authorities' control and processing module, signal conversion module, and data memory module, synchronization module and touch liquid crystal display module is characterized in that:
Described central authorities control and processing module respectively with signal conversion module, data memory module and the two-way electrical connection of touch liquid crystal display module, central authorities control and processing module also is electrically connected with synchronization module;
The control of described central authorities and processing module contain on-site programmable gate array FPGA device and peripheral configuring chip and program storage, the embedded soft-core processor, peripheral hardware steering logic unit and the digital signal processor DSP that are provided with by the on-site programmable gate array FPGA device inside, work in coordination with and finish the collection of electromagnetic signal and the processing of data, central authorities' control and processing module are used for finishing the control of system and the processing of data;
It will be digital signal through the reception analog signal conversion of amplification, filtering that described signal conversion module is used for;
Described data memory module adopts the high speed storing controller, the big capacity pocket memory of storage medium support, and data memory module is used for electromagnetic data and the data computation result that register system is gathered;
Described synchronization module adopts global position system GPS module and/or Beidou satellite navigation system COMPASS module, is used for realizing the synchronous of Acquisition Instrument and transmitter;
Described touch liquid crystal display module adopts the electric resistance touch-control LCDs, is used for realizing the setting of system works pattern and parameter, shows the data and the data computation result that collect.
2. the control system of a kind of hand-held pseudorandom transient electromagnetic signal sampler according to claim 1, it is characterized in that: the embedded soft-core processor of described on-site programmable gate array FPGA device inside adopts Nios II soft-core processor or MIPS soft-core processor or ARM soft-core processor, described soft-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 the touch liquid crystal display module; The peripheral hardware steering logic unit of described inside adopts Verilog language or VHDL language to be write as, is used for the setting of signal conversion module duty and the control of the course of work, and the control of importing the channel selecting of simulating signal, program control amplification, filtering; Described digital signal processor inside adopts its embedded DSP soft-core processor or adopts the stone dsp processor, digital signal processor is used for processing and every exploration CALCULATION OF PARAMETERS of image data, handles with result calculated to show by the touch liquid crystal display unit.
3. an application rights requires the method for operating of 1 described hand-held pseudorandom transient electromagnetic signal sampler control system, it is characterized in that: operation as follows:
⑴, the type and the working method that transmit according to transmitter are by the touch liquid crystal display module selective system mode of operation of Acquisition Instrument: namely select frequency domain electromagnetic methods detection operations pattern, gather the pseudorandom electromagnetic signal; Or select time territory electromagnetic prospecting mode of operation, gather the transient electromagnetic signal;
⑵, central authorities handle with control module according to selected system works pattern switching controls pattern, central authorities' processing takes corresponding data to handle and computing method with the FPGA digital signal processor inside in the control module: if frequency domain electromagnetic methods detection operations pattern, then digital signal processor takes to comprise filtering, related operation, Fourier transform, spectrum analysis data processing method; If TDEM investigation and prospecting pattern, then digital signal processor takes to comprise filtering, related operation, synchronous superposition of data disposal route; But the data computation apparent resistivity after digital signal processor by using is handled, charge rate, frequency dispersion rate and the resistivity prospecting parameter that needs, the user selects to calculate and show the resistivity prospecting parameter as required;
, by the size of user's selective reception square on the touch liquid crystal display screen, the type of transmitter arranges the X that sends square, the size of Y, the number of turn of coil, forward delay interval, antenna time-delay, gain mode, the gain size, described running parameter is not if the user sets then according to default parameters work;
⑷, select acquisition channel, acquisition rate and drainage pattern by the user at the touch liquid crystal display screen, the input electromagnetic signal is gathered according to the running parameter of selecting by system; Signal conversion module will be digital signal through the reception analog signal conversion of amplification, filtering;
⑸ electromagnetic data and exploration calculation of parameter result that, data memory module are gathered according to the system works pattern setting recording of selecting;
⑹, central authorities' control are read historical data and result with processing module, and are shown at the touch liquid crystal display unit from data memory module.
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| 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 |
| CN109164495A (en) * | 2018-11-02 | 2019-01-08 | 湖南继善高科技有限公司 | A kind of oil gas pressure break electromagnetic data real-time acquisition device |
| 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 |
| CN109408456A (en) * | 2018-12-07 | 2019-03-01 | 中国地质大学（武汉） | One kind is based on S905D chip and STM32 chip collaborative work hardware circuit |
| 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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