Connect public, paid and private patent data with Google Patents Public Datasets

Electrical prospecting method and measuring device

Info

Publication number
CN102053278B
CN102053278B CN 201010555314 CN201010555314A CN102053278B CN 102053278 B CN102053278 B CN 102053278B CN 201010555314 CN201010555314 CN 201010555314 CN 201010555314 A CN201010555314 A CN 201010555314A CN 102053278 B CN102053278 B CN 102053278B
Authority
CN
Grant status
Grant
Patent type
Prior art keywords
device
circuit
frequency
obtaining
method
Prior art date
Application number
CN 201010555314
Other languages
Chinese (zh)
Other versions
CN102053278A (en )
Inventor
李浩宇
罗先中
赵壁如
Original Assignee
天津英驰勘探技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Grant date

Links

Abstract

The invention discloses an electrical prospecting method and a measuring device. The method comprises the following steps of: transmitting a current waveform serving as an excitation signal with pseudo-random code characteristics to the underground through a transmitter; receiving a voltage signal generated by the excitation signal through a receiver; mathematically processing to obtain a pulse transition function; obtaining an amplitude-frequency curve and a phase frequency curve in a corresponding frequency range through fast Fourier transform; obtaining an amplitude value and a phase valueof each frequency point; and obtaining apparent resistivity and phase parameters with geophysical meaning through the parameters. The device comprises a transmitter consisting of a computer, a programmable logic device, a transmitter clock synchronization circuit, a logic sequence generator, a self-sampling processing circuit, a direct current power supply, a drive and protection circuit, a self-sampling filtering circuit and a power supply electrode AB, and a receiver consisting of a filtering and protecting circuit, an amplifying and analog/digital sampling circuit, a programmable logic device and a computer. The device has good anti-interference performance, can perform effective measurement at low power and can be matched with a plurality of sets of equipment to perform measurement simultaneously.

Description

电法勘探方法及测量装置 The method of electric prospecting method and measurement apparatus

技术领域 FIELD

[0001] 本发明涉及一种电法勘探。 [0001] The present invention relates to an electrical prospecting. 特别是涉及一种具有抗干扰性强的主动源频率域的电法勘探方法及测量装置。 Particularly it relates to an electrical prospecting method and a measuring device having a strong anti-active source frequency domain.

背景技术 Background technique

[0002] 有色金属应用广阔而地位重要,是我国国民经济与国防建设中具有重要的战略性资源。 [0002] Application of non-ferrous metals broad and important position, is China's national economy and national defense construction has important strategic resource. 随着我国低附加值有色金属产品低价出口和铁矿石、高端产品大量依赖进口的矛盾越来越突出,提高资源的自给保障程度,支持国民经济发展乃至保障国家安全等方面都越来越需要在生产矿山深部或附近以及相应的成矿区带进行深部矿、隐伏矿的勘探工作。 As China's non-ferrous metal products with low added value and low-priced exports of iron ore, a large number of high-end products rely on imports of increasingly prominent contradiction, improve the degree of self-support resources to support national economic development and the protection of national security and other aspects are increasingly requires deep mines or near the production well into the corresponding deep ore mining belt, concealed ore exploration work.

[0003] 电法勘探主要利用物质的导电性、激发极化性、导磁性、介电性、压电性和震电性等,现在可以在地面、空中或海洋中进行电法测量,但仍以地面电法勘探为主。 [0003] The main electrical surveying using a conductive material, induced polarization resistance, permeability, dielectric, piezoelectric or electric shock, etc., can now be electrically measurements on the ground, air or sea, but still to ground electrical prospecting method based. 电法勘探的方法种类很多,从场源的形成机制一人工场源和天然场源来分,可分为主动源电法和被动源电法两大类,其中主动源电法应用较多,其代表方法有电阻率法、激发极化法、充电法、频率电磁测深法、可控源音频大地电磁测深法、瞬变电磁法等。 The type of electrical method many of the exploration, the formation mechanism of the field from a source of natural and artificial field source field source points, can be divided into active and passive source AFP electric source method into two categories, which are more active source polarization method, which Representative methods resistivity method, induced polarization, charging method, the frequency of electromagnetic sounding, controlled source audio magnetotelluric sounding method, transient electromagnetic method.

[0004] 随着电子计算技术的飞速发展,电法勘探方法技术和仪器越来越多,美国、法国、 加拿大、俄罗斯、中国等都生产各种电法勘探仪器。 [0004] With the rapid development of electronic computing technology, electrical exploration techniques and instruments more and more, the United States, France, Canada, Russia, China and so the production of electrical prospecting instrument. 自上世纪八十年代后,我国相继引进了美国、加拿大有关公司的V8、SIROTEM、EM67、VIP、⑶P32、IPR-12等仪器设备开展过找矿工作。 Since the 1980's, China has successively introduced the United States, Canada, the company's V8, SIROTEM, EM67, VIP, ⑶P32, IPR-12 and other equipment had to carry out prospecting work. 通过十多年来我国的近百项电法专题研究和勘查项目实践,证明电法勘查在新一轮地质找矿领域可以取得很好的效果。 Through ten years of studies and exploration projects practice almost a hundred electric law of our country, proof electrical prospecting method can achieve good results in the geological prospecting areas.

[0005] 但是,现代信息化社会电磁信号无所不在,工业及生活电磁干扰日益严重,现有的电法勘探仪器均难以很好地克服电磁干扰取得满意的电法勘探资料;另一方面,随着地表资源的枯竭和采矿技术手段的提高,向深部要矿是人类社会发展的必然趋势。 [0005] However, modern information society electromagnetic signal omnipresent, industrial and domestic electromagnetic interference worsening, the existing electrical prospecting instruments are difficult to properly overcome electromagnetic interference to achieve a satisfactory method of electrical exploration data; on the other hand, with the depletion and increase in surface mining technology resources, to the deep to mine is the inevitable trend of development of human society. 一些仪器厂家为了提高仪器的抗强电磁干扰性能和提高深层勘探的分辨率,采取了加大供电电流的方法技术,在电磁干扰不太严重的地区也的确取得了一些令人满意的效果。 Some equipment manufacturers in order to improve the strength and resistance to electromagnetic interference and improve the resolution of the instrument of deep exploration, technical methods adopted to increase the supply current, electromagnetic interference in areas less severe indeed achieved some satisfactory results. 但是,受安全和技术等因素制约,供电电流不能无限提高,而且在正生产的矿区、铁路沿线、高压走廊和城市、 集镇等人文活动频繁地区,加大供电电流的方法在强大的游散电流干扰面前仍旧是无能为力。 However, subject to security and technical factors, the supply current can not be infinitely improved, but the positive production of mine, along the railway, and high-pressure corridor cities, towns and other human activities prone areas, enlarging the supply current in a strong stray current before interference is still powerless.

[0006] 无需大电流、抗干扰、高分辨率是未来电法勘探仪器的发展方向,也只有如此,电法勘探才能保持强大的生命力,才能实现强电磁干扰区的电法勘探,才能提高深层电法勘探的分辨率。 [0006] do not need high-current, anti-interference, high resolution is the future direction of exploration equipment electrical method, and only this, electrical prospecting in order to maintain a strong vitality, in order to achieve electrical prospecting strong electromagnetic interference area, in order to improve the deep resolution electrical prospecting method.

发明内容 SUMMARY

[0007] 本发明所要解决的技术问题是,提供一种抗干扰性强,能在小功率下进行有效测量,并且能够多套设备同时进行测量的电法勘探方法及测量装置。 [0007] The present invention solves the technical problem, to provide a strong anti-interference, it can be effectively measured at low power, and is capable of multiple sets of equipment and electrical prospecting methods Method measuring device simultaneously.

[0008] 本发明所采用的技术方案是:一种电法勘探方法及测量装置,其中,电法勘探方法,包括通过发射机向地下发送具有伪随机码特性的电流波形作为激励信号,接收机接收 [0008] The technical proposal of the present invention is: A method for electric prospecting method and measuring device, wherein the electrical prospecting method, comprising transmitting a current waveform having a pseudo-random code characteristic to the ground by the transmitter as an excitation signal, a receiver receive

4由激励信号产生的电压信号,通过数学处理得到脉冲过渡函数,再通过快速傅立叶变换得到相应频率段的幅频曲线和相频曲线,并得到各频点的幅度值、相位值,通过这些参数取得具有地球物理意义的视电阻率和相位参数。 4 the voltage signal generated by the excitation signal, obtained by mathematical processing pulses transition function, and then to obtain the amplitude-frequency curve of the corresponding frequency band by a Fast Fourier Transform and phase-frequency curve, and to obtain an amplitude value of each frequency, the phase values, these parameters obtaining apparent resistivity and phase parameters have geophysical significance.

[0009] 所述的发送具有伪随机码特性的电流波形的伪随机码的码长可调、本源多项式可选择、码速率可调、起始相位可调,所发送的激励信号是从初相开始,按照设定的码长、本源多项式、码速率和起始相位将具有伪随机特性的电流波形依次发送,以2n-l为周期,η是一个大于0小于20的整数。 Transmitter current waveform has a pseudo-random code characteristic code pseudorandom code [0009] The adjustable length, origin polynomial Alternatively, the code rate is adjustable, the adjustable start phase, the excitation signal transmitted from the early phase current waveform starts according to the set code length, the origin of the polynomial, and the initial phase of the code rate having a pseudo-random sequence of transmission characteristics, for the period to 2n-l, [eta] is an integer greater than 0 and less than 20.

[0010] 所述的数学处理过程如下: [0010] The following mathematical processing:

[0011] [0011]

Figure CN102053278BD00051

[0012] 其中:y(t)是仪器获得的测量信号,即接收电极丽之间的测量信号,G(t_0)是脉冲过渡函数,U(O)是供电信号,为伪随机信号,e(t)是干扰信号; [0012] where: y (t) is obtained by measuring the signaling device, i.e., the received signal between the measurement electrodes Li, G (t_0) pulse transition function, U (O) ​​is a power signal, a pseudo-random signal, E ( t) is an interference signal;

[0013] 将仪器获得的测量信号卷积供电信号u( ο ),对y (t)进行重构,得到: [0013] The measurement signal obtained by convolution of the instrument power supply signal u (ο), to y (t) is reconstructed to obtain:

Figure CN102053278BD00052

[0016] 由于使用的供电信号是伪随机码,即脉冲信号,因此 [0016] Since the power signal is a pseudo random code is used, i.e. the pulse signal,

[0017] [0017]

Figure CN102053278BD00053

[0018] 由于干扰信号与伪随机码的相关性很小,所以可以近似成: [0018] Because of the interference signal is small and the pseudo-random code, can be approximated as:

[0019] [0019]

Figure CN102053278BD00054

[0020] |是卷积的干扰信号。 [0020] | interfering signal convolution.

[0021] 这样当η足够大时,有用信号与噪声的放大倍数之比为J2n-l)/2n,所以通过改变η获得足够信噪比特性,从而获得更接近于真值的脉冲过渡函数。 [0021] [eta] is large enough so that when the ratio of useful signal to noise is a magnification of J2n-l) / 2n, a sufficient signal to noise ratio is obtained by changing the characteristics [eta], to thereby obtain a pulse transition function closer to the true value.

[0022] 所述的取得地球物理意义的参数是: [0022] The significance of acquired geophysical parameters are:

[0023] 对发送的激励信号做自相关处理得到发送的激励信号的脉冲过渡函数,对接收信号做互相关处理得到接收信号的脉冲过渡函数,对发送的激励信号的脉冲过渡函数做快速傅立叶变换,得到各个频点下信号的实部和虚部,从而分别得到发送的激励信号的幅频特征曲线和相频特征曲线;同理,对接收信号的脉冲过渡函数做快速傅立叶变换,得到接收信号的幅频特征曲线和相频特征曲线;用接收信号的相频特征曲线的各频点值减去发送的激励信号的相频特征曲线相应频点值,得到各个频点的绝对相位值;用接收信号的幅频特征曲线各频点值除以发送的激励信号的幅频特征曲线对应频点的值,再乘以装置系数K即得到视电阻率值P s = KXU/I。 [0023] The excitation signal transmitted to do auto-correlation processing to obtain the pulse transition function of the excitation signal transmitted from the received signal to make the cross-correlation processing to obtain the pulse transition function of the received signal, to make a fast Fourier transform of the transmitted pulse transition function of the excitation signal to obtain different frequencies of the real and imaginary portions of the signal to obtain amplitude of the excitation signal are transmitted in the frequency and phase-frequency characteristic curve characteristic curve; Similarly, the transition function of the received pulse signal to make a fast Fourier transform, to obtain a reception signal the amplitude-frequency and phase-frequency characteristic curve characteristic curve; each frequency value a frequency characteristic curve of the phase of the received signal by subtracting the phase-frequency characteristic curve of the excitation signal transmitted respective frequency value to obtain the absolute phase value of each frequency; with amplitude of the excitation signal amplitude-frequency characteristic curve of the received signal at the frequency points divided by the transmitted pilot values ​​corresponding to the frequency characteristic curve and multiplying by the coefficient K means obtain apparent resistivity values ​​P s = KXU / I.

[0024] 发射机发送的激励信号的电流波形最小频率为2_1(ιΗζ,最大频率为22°Ηζ。 [0024] excitation current waveform signal sent by the transmitter at a minimum frequency 2_1 (ιΗζ, a maximum frequency of 22 ° Ηζ.

[0025] 其中,用于电法勘探方法的测量装置,包括有发射机和接收机,所述的发射机包括:发射机大规模可编程逻辑器件与发射机控制计算机的输入输出相连,发射机大规模可编程逻辑器件的输出与逻辑时序发生器相连,所述的逻辑时序发生器的输出连接驱动及保护电路,所述的驱动及保护电路的输出连接到供电电极AB,所述的驱动及保护电路的输出还依次通过自采样滤波电路及自采样处理电路连接到发射机大规模可编程逻辑器件的输入端,所述的发射机大规模可编程逻辑器件还连接发射机时钟同步电路,所述的驱动及保护电路由直流电源供电; [0025] wherein the means for measuring the electrical method exploration methods, including the transmitter and a receiver, said transmitter comprising: a transmitter coupled to the programmable logic massive O device control computer and the transmitter, the transmitter scale programmable logic device connected to the output of the logical timing generator, the output of the timing generator logic connected to the drive and the protection circuit, and the output of the driver protection circuit is connected to the power supply electrodes AB, said drive and output protection circuit is also connected to a transmitter mass sequentially passes through the programmable logic device input from the filter circuit and the sampling circuit from the sampling process, the transmitter further large scale programmable logic device connected to the transmitter clock synchronization circuit, the drive and protection circuits powered by a DC power supply described later;

[0026] 所述的接收机包括:将来自接收电极的输入信号依次通过滤波及保护电路、放大及AD采样电路和接收机大规模可编程逻辑器件后输出给接收机控制计算机,所述的接收机大规模可编程逻辑器件还连接接收机时钟同步电路。 [0026] The receiver comprises: receiving an input signal from the electrodes passes through the filter and protection circuit, amplifier, and an output control computer to the receiver and the receiver sampling circuit scale AD programmable logic device, said receiver machine scale programmable logic device is also connected to the receiver clock synchronization circuit.

[0027] 所述的发射机时钟同步电路包括:依次串接的发射机外接GPS天线、发射机GPS模块、发射机隔离电路和发射机同步输出线,其中,所述的发射机隔离电路的输出端与发射机大规模可编程逻辑器件。 The transmitter clock synchronization circuit according to [0027] comprising: a transmitter output sequentially connected an external GPS antenna, a GPS module transmitter, and the transmitter synchronized transmitter isolation circuit output line, wherein the transmitter circuit isolation end of the transmitter scale programmable logic device.

[0028] 所述的逻辑时序发生器包括:控制信号电平转换电路与发射机大规模可编程逻辑器件的输出端相连,所述的控制信号电平转换电路的输出端连接隔离及正负倒向电路,所述的隔离及正负倒向电路的输出连接驱动及保护电路。 [0028] The logic of the timing generator comprising: a control signal output terminal of the level conversion circuit and a large scale programmable logic device connected to the transmitter, the control signal output terminal of the level conversion circuit is connected to negative and reverse isolation connecting circuit, and an output of the isolation circuit to the negative backward drive and protection circuit.

[0029] 所述的驱动及保护电路包括:第一取样电阻、过流检测、隔离电路、高压开关驱动电路、高速IGBT电路、第二取样电阻,其中,所述的第一取样电阻串接在直流电源的正电压端,取样电阻的两端连接到过流检测电路的输入端,所述的过流检测电路的输出端连接到隔离电路的输入端,所述隔离电路的输出端接到发射机大规模可编程逻辑器件的电路输入端;所述的高压开关驱动电路的输入端连接逻辑时序发生器的电路输出端,高压开关驱动电路的输出端接到高速IGBT电路的控制端,高速IGBT电路的输出端通过第二取样电阻后连接到供电电极AB上;第二取样电阻的两端接到自采样滤波电路)的输入端。 [0029] The drive and protection circuit includes: a first sampling resistor, the overcurrent detection, isolation circuit, high voltage switch drive circuit, high-speed IGBT circuit, a second sampling resistor, wherein said resistor is connected at a first sampling the positive output terminal of the DC power supply voltage terminal, connected to both ends of the sampling resistor through the input end of the flow detection circuit, the overcurrent detection circuit is connected to an input of the isolation circuit, the isolation circuit output terminal to the emitter machine circuit input scale programmable logic device; an input terminal of the high voltage switch drive circuit is connected to an output terminal of the timing generator logic circuit, the output terminal of the high voltage switch drive circuit to a control terminal of the high-speed IGBT circuit, high-speed IGBT after the output circuit through the second sampling resistor connected to the power supply electrode AB; ends of the second resistor connected to the input sampling from the sampling filter circuit).

[0030] 所述的自采样处理电路包括依次串接的放大电路、低通及陷波滤波电路和AD采样电路,其中,所述的放大电路的输入端连接自采样滤波电路的输出端,所述的AD采样电路的输出端连接发射机大规模可编程逻辑器件的输入端。 Since the sampling processing circuit includes an amplifier circuit connected in series sequentially according to [0030], the low-pass filter and trap circuit and an AD sampling circuit, wherein said amplifier circuit from an input terminal connected to the output of the sampling filter circuit, the AD output of said sampling circuit is connected to the input of the transmitter scale programmable logic device.

[0031] 所述的接收机时钟同步电路包括接收机外接GPS天线、接收机GPS模块、时钟同步线、接收机隔离电路,所述的接收机外接GPS天线连接到接收机GPS模块的输入端,所述的接收机GPS模块的输出端连接到接收机隔离电路的一路输入,所述的时钟同步线连接到接收机隔离电路的另一路输入,所述的接收机隔离电路的输出信号连接到接收机大规模可编程逻辑器件上。 [0031] The receiver includes a receiver clock synchronization circuit external GPS antenna, a GPS receiver module, a synchronization clock line, the receiver isolation circuit, the external GPS receiver antenna is connected to the input of a receiver of the GPS module, output of the output signal of the GPS receiver module is connected to one input of the receiver isolation circuit, the clock synchronization line is connected to the other input of the receiver isolation circuit, said receiver circuit is connected to the receive isolation large scale programmable logic device on the machine.

[0032] 本发明的电法勘探方法及测量装置,所述的方法将接收信号与供电信号进行数学处理,成功实现了抗干扰的目标,而且伪随机码的特性还使此系统能在小功率下进行有效测量,并且能够多套设备同时进行测量。 [0032] The method of electrical prospecting method and measuring device of the invention, the method of the received signal and power supply signal mathematical treatment successfully achieve the goal of interference, and further characteristics of the pseudo-random code so that the system can be low-powered the effective measurement, and multiple sets of equipment can be measured simultaneously. 所述的测量装置在高山丛林地区和交通不发达地区因电源功率低、设备轻便、机动性强,能多台仪器同时工作,这就为大面积快速普查和生产矿区深边部资源勘探提供了有效手段。 The measuring device due to the low power output, the device lightweight, highly mobile in the mountains and jungle areas with poor communications, to multiple instruments simultaneously, which provides a quick survey a large area and deep edge exploration and production mining effective means. 本发明具有如下特点: The present invention has the following characteristics:

[0033] 1.发射机发送的伪随机码波形可以按照不同的码长、本源多项式、码速率和初相任意选择确定,可以针对不同地区的干扰情况选择合适的伪随机码波形取得满意的信噪比,从而能很好压制生产矿山工业电磁干扰,可在生产矿山深边部开展勘探; [0033] 1. The pseudo-random code transmitted by the transmitter waveform according to different code lengths, origin polynomial code rate and phase determined arbitrarily selected, can select the appropriate pseudorandom code waveform satisfactory channel interference situation for different regions noise ratio, which can well suppress the production of mining industry electromagnetic interference, can carry out the production of mining the deep edge exploration;

[0034] 2.同一地区工作的多台测量装置可以选择不同的码长和本源多项式工作,解决了电法勘探仪器互为干扰源从而不能同时工作的问题; Multiple measuring device [0034] 2. The work area can be selected in the same code length and different origin polynomial work to solve the problem of electrical prospecting mutual interference sources so that the instrument can not work at the same time;

[0035] 3.发射机和接收机精确同步,保证了各频点下起始相位相同,可实现多个频率的振幅、绝对相位、相对相位的精确测量,有利于更准确判别异常源的性质,进行找矿; [0035] 3. The transmitter and receiver are accurately synchronized, to ensure the same initial phase at each frequency, the amplitude can be realized a plurality of frequencies, the absolute phase, accurate measurement of the relative phase, facilitating more accurate determination of the nature of the anomaly sources carried out prospecting;

[0036] 4.测量装置的抗干扰设计有效降低了主动源的功率,实现了轻便化和可一机发送多机接收工作方式,能满足快速大面积勘查,特别是降低了在西部荒漠和高山地区的劳动强度,同时提高了工作效率。 [0036] 4. The design of interference measuring apparatus is effective to reduce the active power source, can realize a lightweight and transmits a plurality receives work, to meet the rapid exploration of large areas, particularly reduced in the western desert and mountains labor-intensive areas, while improving productivity.

附图说明 BRIEF DESCRIPTION

[0037] 图1是本发明的发射机供电波形图; [0037] FIG. 1 is a waveform diagram of a transmitter power of the present invention;

[0038] 图2是本发明的发射机示意框图; [0038] FIG. 2 is a schematic block diagram of a transmitter of the present invention;

[0039] 图3是本发明的接收机示意框图; [0039] FIG. 3 is a schematic block diagram of a receiver according to the present invention;

[0040] 图4是发射机时钟同步电路框图; [0040] FIG. 4 is a block diagram of a transmitter clock synchronization circuit;

[0041] 图5是逻辑时序发生器电路框图; [0041] FIG. 5 is a logic block diagram of a timing generator circuit;

[0042] 图6是驱动及保护电路框图; [0042] FIG. 6 is a block diagram of the drive and the protection circuit;

[0043] 图7是自采样处理电路框图; [0043] FIG. 7 is a block diagram of the processing from the sampling circuit;

[0044] 图8是接收机时钟同步电路框图。 [0044] FIG. 8 is a block diagram of the receiver clock synchronization circuit.

具体实施方式 detailed description

[0045] 下面结合实施例和附图对本发明的电法勘探方法及测量装置做出详细说明。 [0045] The following Examples and detailed description of the drawings make electrical prospecting method and measuring method of the present invention.

[0046] 本发明的电法勘探方法,包括通过发射机向地下发送具有伪随机码特性的电流波形作为激励信号,接收机接收由激励信号产生的电压信号,通过数学处理得到脉冲过渡函数,再通过快速傅立叶变换得到相应频率段的幅频曲线和相频曲线,并得到各频点的幅度值、相位值,通过这些参数从而取得具有地球物理意义的视电阻率和相位参数。 [0046] The method of electrical prospecting method of the present invention, including a transmitter to transmit through the underground current waveform having a pseudo-random code characteristic as an excitation signal, a receiver receiving a voltage signal generated by the excitation signal to obtain the pulse transition function by mathematical processing, and then to give the corresponding amplitude frequency band by a fast Fourier transform frequency curve and phase-frequency curve, and to obtain an amplitude value of each frequency, the phase values, these parameters so as to obtain apparent resistivity and phase parameters have geophysical significance.

[0047] 所述的发送具有伪随机码特性的电流波形的伪随机码的码长可调、本源多项式可选择、码速率可调、起始相位可调,所发送的激励信号是从初相开始,按照设定的码长、本源多项式、码速率和起始相位将具有伪随机特性的电流波形依次发送,以2n-l为周期,η是一个大于0小于20的整数。 Transmitter current waveform has a pseudo-random code characteristic code pseudorandom code [0047] The adjustable length, origin polynomial Alternatively, the code rate is adjustable, the adjustable start phase, the excitation signal transmitted from the early phase current waveform starts according to the set code length, the origin of the polynomial, and the initial phase of the code rate having a pseudo-random sequence of transmission characteristics, for the period to 2n-l, [eta] is an integer greater than 0 and less than 20.

[0048] 所述的数学处理过程如下: [0048] The following mathematical processing:

(•+CO (• + CO

[0049] y{t) = G{t - σ) * «(σ) * ί/σ + e{t) [0049] y {t) = G {t - σ) * «(σ) * ί / σ + e {t)

J—00 J-00

[0050] 其中:y(t)是仪器获得的测量信号,即接收电极丽之间的测量信号,G(t_0)是脉冲过渡函数,U(O)是供电信号,为伪随机信号,e(t)是干扰信号; [0050] where: y (t) is obtained by measuring the signaling device, i.e., the received signal between the measurement electrodes Li, G (t_0) pulse transition function, U (O) ​​is a power signal, a pseudo-random signal, E ( t) is an interference signal;

[0051] 将测量获得的信号卷积供电信号),对y(t)进行重构,得到: [0051] The measurement signal obtained by convolution of the signal power) of y (t) is reconstructed to obtain:

[0052] [0052]

J —00 J -00

[0053] [0053]

广+CO 广+CO 广+CO Wide wide + CO + CO + CO Canton

= G{tG)\ u(a-Ty U(T)^dT ^ da+ - σ) * "(σ) * Λτ = G {tG) \ u (a-Ty U (T) ^ dT ^ da + - σ) * "(σ) * Λτ

J -co J -co J -co J -co J -co J -co

[0054] 由于使用的供电信号是伪随机码,即脉冲信号,因此[0055] [0054] Since the power signal is a pseudo random code is used, i.e. the pulse signal, thus [0055]

Figure CN102053278BD00081

[0056] 由于干扰信号与伪随机码的相关性很小,所以可以近似成: [0056] Because of the interference signal is small and the pseudo-random code, can be approximated as:

[0057] [0057]

Figure CN102053278BD00082

[0058] 这样当η足够大时,有用信号与噪声的放大倍数之比为:On-I) /2η,所以通过改变η获得足够信噪比特性,从而获得更接近于真值的脉冲过渡函数。 [0058] [eta] is large enough so that when the ratio of useful signal to noise of magnification is: On-I) / 2η, a sufficient signal to noise ratio is obtained by changing the characteristics [eta], thereby obtaining a transition pulse is closer to the true value of the function . 从而当η足够大时,可以将除以Qn-I)近似得到脉冲过渡函数G(T)。 Such that when η is sufficiently large, may be divided Qn-I) transition pulse approximated function G (T).

[0059] 所述的取得地球物理意义的参数是:对发送的激励信号做自相关处理得到发送的激励信号的脉冲过渡函数,对接收信号做互相关处理得到接收信号的脉冲过渡函数,对发送的激励信号的脉冲过渡函数做快速傅立叶变换,得到各个频点下信号的实部和虚部,从而分别得到发送的激励信号的幅频特征曲线和相频特征曲线;同理,对接收信号的脉冲过渡函数做快速傅立叶变换,得到接收信号的幅频特征曲线和相频特征曲线;用接收信号的相频特征曲线的各频点值减去发送的激励信号的相频特征曲线相应频点值,得到各个频点的绝对相位值;用接收信号的幅频特征曲线各频点值除以发送的激励信号的幅频特征曲线对应频点的值,再乘以装置系数K即得到视电阻率值PS = KXU/I。 [0059] The meaning of the acquired geophysical parameters are: the excitation signal transmitted from the correlation processing is done to give the pulse transition function of the excitation signal transmitted to the reception signal processing to make the cross-correlation function of the received signal to obtain a transition of the pulse, the transmission the transition function of the excitation signal pulses to make a fast Fourier transform, to obtain the real and imaginary parts of the respective lower frequency signals, whereby signals respectively transmitted excitation amplitude-frequency characteristic curve of the phase and frequency characteristic curve; Similarly, the received signal is pulse transition function to do a fast Fourier transform to obtain amplitude-frequency characteristic curve of the received signal and the phase-frequency characteristic curve; each frequency of the received signal with a phase-frequency characteristic curve of the phase-frequency characteristic curve value obtained by subtracting the excitation signal transmitted respective frequency values to obtain the absolute phase value of each frequency; amplitude of the excitation signal with the received signal amplitude-frequency characteristic curve of each frequency divided by the transmitted pilot values ​​corresponding to the frequency characteristic curve and multiplying by the coefficient K means to obtain the apparent resistivity value PS = KXU / I. 本发明数学处理过程在前期经过MATLAB软件仿真验证,所用的数学公式是公用的。 After mathematical processing of the present invention in the early stage of MATLAB simulation, mathematical formulas used are common.

[0060] 本发明的电法勘探方法中发射机发送的激励信号最小频率为2_1(ιΗζ,最大频率为2〜ζ。 [0060] The minimum frequency of the electrical excitation signal exploration method according to the present invention method is transmitted by a transmitter 2_1 (ιΗζ, the maximum frequency of 2~ζ.

[0061] 按照本发明的电法勘探方法,,如果使用2〜20位伪随机m序列码,本源多项式可通过下表产生,根据公知的理论,本源多项式根据η不同可以有很多种,现将几个特征本源多项式列表如下: [0061] If 2~20 ,, m bit pseudo-random sequence code, source generates polynomial by the following table according to the method of electrical prospecting method of the present invention, the well-known theory, according to polynomial η origin can have a variety of different, now several characteristic polynomial of origin are listed below:

[0062] [0062]

M序列位数(η) 部分本源多项式 M-sequence bits ([eta]) polynomial portion origin

Figure CN102053278BD00083
Figure CN102053278BD00091

[0063] 码片间隔T是发射机供电的最小时间间隔,可通过计算机设定,从0. 1 s到如,发射机发送周期以On-l)*T为周期。 [0063] chip-interval T is the minimum time interval of the transmitter power can be set by a computer, such as from 0. 1 s to the transmitter transmission cycle to On-l) * T is the period.

[0064] 如图1所示,以4位码为例详细说明发射机供电特征,使用本源多项式为 [0064] As shown, four yards transmitter detail an example wherein the power supply 1, a source polynomial

[0065] f(x) = x4+x3+l,初始状态为“000001”,码片间隔时间为T,[0066] T = 500ms,最小频率=1/(16*T) = 0. 125 [0065] f (x) = x4 + x3 + l, the initial state is "000001", the chip interval is T, [0066] T = 500ms, the minimum frequency = 1 / (16 * T) = 0. 125

[0067] 最大频率=1/Τ = 2 [0067] Maximum Frequency = 1 / Τ = 2

[0068] 发射机发送该m序列四位码的伪随机码的激励信号,接收机接收到测量信号后可以选用MATLAB软件进行卷积计算得到重构后的测量信号,再通过快速傅立叶变换对发送的激励信号做自相关计算得到发送的激励信号的脉冲过渡函数,对接收信号做互相关计算得到接收信号的脉冲过渡函数,对发送的激励信号的脉冲过渡函数做快速傅立叶变换,得到各个频点下信号的实部和虚部,可以分别得到发送的激励信号的幅频特征曲线和相频特征曲线;同理,对接收信号的脉冲过渡函数做快速傅立叶变换,得到接收信号的幅频特征曲线和相频特征曲线。 After [0068] The transmitter transmits a sequence of four yards of m pseudorandom code of the excitation signal, the measurement signal received by the receiver can use software MATLAB measurement signal obtained reconstruction convolution calculation, and then transmitted through the fast Fourier transform excitation signal do autocorrelation calculated transmission pulse transition function of the excitation signal, the received signal to make the cross-correlation calculated pulse transition function of the received signal, to make a fast Fourier transform of the transmitted pulse transition function of the excitation signal to obtain respective frequency the real and imaginary parts of the signal can be obtained respectively the excitation signal amplitude-frequency characteristic curve of the transmission frequency and the phase characteristic curve; Similarly, the transition function of the received pulse signal to make a fast Fourier transform to obtain amplitude-frequency characteristic curve of the received signal and phase-frequency characteristic curve.

[0069] 用接收信号的相频特征曲线的各频点值减去发送的激励信号的相频特征曲线相应频点值,得到各个频点的绝对相位值;用接收信号的幅频特征曲线各频点值除以发送的激励信号的幅频特征曲线对应频点的值,再乘以装置系数K即得到视电阻率值Ps = KXU/L· [0069] each frequency using a frequency characteristic curve of the phase of the received signal minus the excitation signal transmitted from the phase-frequency characteristic curve of the corresponding frequency value, to obtain the absolute phase value of each frequency point; amplitude of the received signal with the frequency characteristic curve of each amplitude of the excitation signal frequency divided by the transmitted pilot values ​​corresponding to the frequency characteristic curve and multiplying by the coefficient K means L · obtain apparent resistivity values ​​Ps = KXU /

[0070] 本发明的用于电法勘探方法的测量装置,包括有发射机和接收机。 Measuring apparatus [0070] according to the present invention a method for electrical exploration method, including the transmitter and receiver.

[0071] 如图2所示,所述的发射机包括:发射机大规模可编程逻辑器件1与发射机控制计算机O的输入输出相连,发射机大规模可编程逻辑器件1的输出与逻辑时序发生器3相连, 所述的逻辑时序发生器3的输出连接驱动及保护电路6,所述的驱动及保护电路6的输出连接到供电电极ΑΒ8,所述的驱动及保护电路6的输出还依次通过自采样滤波电路7及自采样处理电路4连接到发射机大规模可编程逻辑器件1的输入端,所述的发射机大规模可编程逻辑器件1还连接发射机时钟同步电路2,所述的驱动及保护电路6由直流电源5供电; [0071] 2, the transmitter comprising: a transmitter scale programmable logic device connected to the transmitter 1 O O control computer, the output of the transmitter timing and logic large scale programmable logic device 1 generator 3 is connected to the output of said logic timing generator 3 and the protection circuit connected to the drive 6, the output of the protection circuit and the drive is connected to the power supply electrodes 6 ΑΒ8, and the output of the driver circuit 6 also sequentially protection sampling filter circuit and by self-sampling process from the input of the circuit 4 is connected to the transmitter scale programmable logic device 1, the transmitter 1 further large scale programmable logic device connected to the transmitter clock synchronization circuit 2, 7 the protection circuit 6 and the driving power from the DC power source 5;

[0072] 如图3所示,所述的接收机包括:将来自接收电极的输入信号9依次通过滤波及保护电路10、放大及AD采样电路11和接收机大规模可编程逻辑器件12后输出给接收机控制计算机14,所述的接收机大规模可编程逻辑器件12还连接接收机时钟同步电路13。 [0072] 3, said receiver comprising: an input signal from the receiving electrode 9 and the filter passes through the protection circuit 10, amplification and AD sampling circuit 11 and the receiver after the scale programmable logic device 12 outputs the control computer 14 to a receiver, said receiver further large scale programmable logic device 12 connected to the receiver clock synchronization circuit 13.

[0073] 本发明的接收机和发射机之间通过GPS同步或者通过线同步电路设计,同步后两者之间的时钟误差可以控制达到200ns。 [0073] between the transmitter and the receiver of the present invention by the GPS synchronization or by line synchronization circuit, synchronization error between the two clocks can be controlled to achieve 200ns.

[0074] 如图4所示,所述的发射机时钟同步电路2包括:依次串接的发射机外接GPS天线20、发射机GPS模块21、发射机隔离电路23和发射机同步输出线22,其中,所述的发射机隔离电路23的输出端与发射机大规模可编程逻辑器件1。 [0074] As shown in FIG 4, the transmitter clock synchronization circuit 2 comprises: a transmitter sequentially connected external GPS antenna 20, GPS transmitter module 21, a transmitter 23 and transmitter synchronized isolation circuit output line 22, wherein the output of the transmitter of the transmitter 23 of isolation circuit scale programmable logic device 1.

[0075] 由于本发明的用于电法勘探方法的测量装置支持线同步和GPS同步两种方式,所以当使用GPS同步方式时,使用外接GPS模块20输入信号作为同步信号,使用线同步方式时发射机输出同步信号到同步输出线。 [0075] Since the measuring apparatus of the present invention is a method of electrical prospecting supporting line synchronization and GPS synchronization method in two ways, when the synchronous mode using the GPS, the GPS module 20 using the external input signal as a synchronization signal, when using a synchronous line the transmitter synchronization signal synchronized to the output line.

[0076] 如图5所示,所述的逻辑时序发生器3包括:控制信号电平转换电路25与发射机大规模可编程逻辑器件1的输出端相连,所述的控制信号电平转换电路25的输出端连接隔离及正负倒向电路26,所述的隔离及正负倒向电路沈的输出连接驱动及保护电路6。 [0076] 5, the logic timing generator 3 comprises: a control signal level converting circuit 25 is connected to the output terminal of the transmitter 1 of the large scale programmable logic device, the control signal of the level conversion circuit 25 is connected to the output terminal and the negative backward isolation circuit 26, and the isolation of the negative backward sink circuit connected to the output protection circuit 6 and the drive.

[0077] 如图6所示,所述的驱动及保护电路6包括:第一取样电阻32、过流检测31、隔离电路30、高压开关驱动电路34、高速IGBT电路33、第二取样电阻35,其中,所述的第一取样电阻32串接在直流电源5的正电压端,取样电阻32的两端连接到过流检测电路31的输入端,所述的过流检测电路31的输出端连接到隔离电路30的输入端,所述隔离电路30的输出端接到发射机大规模可编程逻辑器件1的电路输入端;所述的高压开关驱动电路34的输入端连接逻辑时序发生器3的电路输出端,高压开关驱动电路34的输出端接到高速IGBT 电路33的控制端,高速IGBT电路33的输出端通过第二取样电阻35后连接到供电电极AB8 上;第二取样电阻35的两端接到自采样滤波电路7的输入端。 [0077] shown in Figure 6, the drive and the protection circuit 6 comprises: a first sampling resistor 32, the overcurrent detection 31, isolation circuit 30, high voltage switch drive circuit 34, a high-speed IGBT circuit 33, a second sampling resistor 35 wherein said first sampling resistor 32 in series with the positive voltage terminal of the DC power source 5, both ends of the sense resistor 32 is connected to the input terminal through the current detection circuit 31, the output of the overcurrent detection circuit 31 connected to an input of the isolation circuit 30, the isolation circuit 30 is connected to the output terminal of the transmitter circuit scale programmable logic device input terminal 1; said high voltage switch drive circuit 34 connected to an input logic timing generator 3 the circuit output terminal, an output terminal 34 of the high voltage switch drive circuit to the control terminal of the high-speed IGBT circuit 33, an output terminal 33 of high-speed IGBT circuit sampling resistor connected to the second feeding electrode 35 through the AB8; second sampling resistor 35 both ends of the filter to an input from the sampling circuit 7.

[0078] 如图7所示,所述的自采样处理电路4包括依次串接的放大电路42、低通及陷波滤波电路41和AD采样电路40,其中,所述的放大电路42的输入端连接自采样滤波电路7的输出端,所述的AD采样电路40的输出端连接发射机大规模可编程逻辑器件1的输入端。 [0078] 7, the self-sampling processing circuit 4 comprises an amplifier circuit 42 are sequentially connected in series, a low-pass filter and trap circuit 41 and the AD sampling circuit 40, wherein the input amplifier circuit 42 sampling the output terminal is connected from the filter circuit 7, the output of the AD sampling circuit 40 is connected to the input of the transmitter 1 scale programmable logic device.

[0079] 如图8所示,所述的接收机时钟同步电路13包括接收机外接GPS天线50、接收机GPS模块51、时钟同步线52、接收机隔离电路53,所述的接收机外接GPS天线50连接到接收机GPS模块51的输入端,所述的接收机GPS模块51的输出端连接到接收机隔离电路53 的一路输入,所述的时钟同步线52连接到接收机隔离电路53的另一路输入,所述的接收机隔离电路53的输出信号连接到接收机大规模可编程逻辑器件12上。 [0079] As shown, the receiver includes a receiver clock synchronization circuit 13 external GPS antenna 50, GPS receiver module 51, the clock synchronization line 52, the receiver isolation circuit 53, the external GPS receiver. 8 antenna 50 is connected to the input of a receiver of the GPS module 51, the output of the GPS receiver module 51 is connected to one input receiver isolation circuit 53, the clock synchronization line 52 is connected to receiver isolation circuit of claim 53 another input, the output signal of the receiver isolation circuit 53 is connected to a receiver 12 on a large scale programmable logic device.

Claims (7)

1. 一种电法勘探方法,其特征在于,包括通过发射机向地下发送具有伪随机码特性的电流波形作为激励信号,接收机接收由激励信号产生的电压信号,通过数学处理得到脉冲过渡函数,再通过快速傅立叶变换得到相应频率段的幅频特征曲线和相频特征曲线,并得到各频点的幅度值、相位值,以及取得具有地球物理意义的视电阻率和相位参数;其中所述数学处理得到脉冲过渡函数中数学处理的过程如下: An electrical prospecting method, comprising transmitting a current waveform having characteristics of a pseudorandom code by a transmitter into the ground as an excitation signal, a receiver receiving a voltage signal generated by the excitation signal to obtain the pulse transition function by mathematical processing , obtained by the fast Fourier transform and then the corresponding amplitude-frequency characteristic curve of the frequency band and the phase-frequency characteristic curves, and to obtain an amplitude value of each frequency, the phase values, and to obtain apparent resistivity and phase parameters have geophysical significance; wherein said mathematical processing function to obtain a pulse transition mathematical treatment is as follows:
Figure CN102053278BC00021
其中:y(t)是仪器获得的测量信号,即接收电极丽之间的测量信号,G(t-0)是脉冲过渡函数,U(O)是供电信号即伪随机信号,e(t)是干扰信号;将仪器获得的测量信号卷积供电信号u( ο ),对y (t)进行重构,得到: Where: y (t) is obtained by measuring the signaling device, i.e., the received signal between the measurement electrodes Li, G (t-0) pulse is the transition function, U (O) ​​is a power signal that is pseudo random signal, e (t) interference signals; measuring a signal power convolution signal u (ο) obtained by the instrument, for y (t) is reconstructed to obtain:
Figure CN102053278BC00022
由于使用的供电信号是伪随机码,即脉冲信号,因此 Since the power signal is a pseudo random code is used, i.e. the pulse signal,
Figure CN102053278BC00023
由于干扰信号与伪随机码的相关性很小,所以可以近似成: Since the interference signal is small and the correlation of the pseudorandom code, so can be approximated to:
Figure CN102053278BC00024
e是卷积的干扰信号;当η足够大时,有用信号与噪声的放大倍数之比为A2n-l)/2n, 所以通过改变η获得足够信噪比特性,从而获得更接近于真值的脉冲过渡函数;其中取得具有地球物理意义的视电阻率和相位参数的过程如下:对发送的激励信号做自相关处理得到发送的激励信号的脉冲过渡函数,对接收信号做互相关处理得到接收信号的脉冲过渡函数,对发送的激励信号的脉冲过渡函数做快速傅立叶变换,得到各个频点下信号的实部和虚部,从而分别得到发送的激励信号的幅频特征曲线和相频特征曲线;同理, 对接收信号的脉冲过渡函数做快速傅立叶变换,得到接收信号的幅频特征曲线和相频特征曲线;用接收信号的相频特征曲线的各频点值减去发送的激励信号的相频特征曲线相应频点值,得到各个频点的绝对相位值Φ s ;用接收信号的幅频特征曲线 e convolution interference signals; [eta] When sufficiently large, the desired signal-to-noise ratio of the magnification of the A2n-l) / 2n, a sufficient signal to noise ratio is obtained by changing the characteristics [eta], to obtain a value closer to the true pulse transition function; wherein obtaining apparent resistivity and phase parameters have geophysical significance is as follows: the excitation signal transmitted from the correlation processing is done to give a transition pulse signal transmitted excitation function, make the received signal to obtain a received signal cross-correlation process pulse transition function, pulse transition function of the excitation signal sent to do a fast Fourier transform, to obtain the real and imaginary parts of the signal of each frequency, thereby respectively amplitude of the excitation signal transmitted from the frequency characteristic curve and phase-frequency characteristic curve; Similarly, the transition function of the received pulse signal to make a fast Fourier transform to obtain amplitude-frequency characteristic curve of the received signal and the phase-frequency characteristic curve; each frequency using a phase-frequency characteristic curve of the received signal by subtracting the phase value of the transmitted excitation signal frequency characteristic curve corresponding frequency values, each frequency point to obtain the absolute phase value Φ s; the received signal with the amplitude-frequency characteristic curve 频点值除以发送的激励信号的幅频特征曲线对应频点的值,再乘以装置系数K即得到视电阻率值P s = KXU/I。 Amplitude of the excitation signal frequency divided by the transmitted pilot values ​​corresponding to the frequency characteristic curve and multiplying by the coefficient K means obtain apparent resistivity values ​​P s = KXU / I.
2.根据权利要求1所述的电法勘探方法,其特征在于,所述的发送具有伪随机码特性的电流波形的伪随机码的码长可调、本源多项式可选择、码速率可调、起始相位可调,所发送的激励信号是从初相开始,按照设定的码长、本源多项式、码速率和起始相位将具有伪随机特性的电流波形依次发送,以2n-l为周期,η是一个大于O小于20的整数。 2. The method of electrical prospecting method according to claim 1, wherein said transmission code pseudorandom code having a current waveform characteristics pseudorandom code length is adjustable, origin polynomial Alternatively, the code rate is adjustable, adjustable start phase, an excitation signal is transmitted from the beginning of the start phase, are sequentially transmitted in accordance with the code length, the origin of the polynomial, and the initial code rate having a pseudo-random phase characteristic current waveform set to 2n-l cycle , η is an integer greater than O is less than 20.
3.根据权利要求1所述的电法勘探方法,其特征在于,发射机发送的激励信号的电流波形最小频率为2_1(ιΗζ,最大频率为22(ιΗζ。 The electrical method exploration method according to claim 1, wherein the current waveform of the exciting signal is sent by the transmitter minimum frequency 2_1 (ιΗζ, a maximum frequency of 22 (ιΗζ.
4. 一种用于权利要求1所述的电法勘探方法的测量装置,包括有发射机和接收机,其特征在于,所述的发射机包括:发射机大规模可编程逻辑器件(1)与发射机控制计算机(0) 的输入输出相连,发射机大规模可编程逻辑器件(1)的输出与逻辑时序发生器C3)相连,所述的逻辑时序发生器⑶的输出连接驱动及保护电路(6),所述的驱动及保护电路(6)的输出连接到供电电极AB(8),所述的驱动及保护电路(6)的输出还依次通过自采样滤波电路(7)及自采样处理电路(4)连接到发射机大规模可编程逻辑器件(1)的输入端,所述的发射机大规模可编程逻辑器件(1)还连接发射机时钟同步电路O),所述的驱动及保护电路(6) 由直流电源(5)供电;所述的接收机包括:将来自接收电极的输入信号(9)依次通过滤波及保护电路(10)、 放大及AD采样电路(11),接收机大规模可编程 An electrical measuring device according to a method of exploration for a method as claimed in claim 4, comprising a transmitter and a receiver, wherein said transmitter comprises: a transmitter scale programmable logic device (1) and transmitter control computer (0) input connected to the output, a large scale programmable logic device connected to the transmitter (1) and the output logic timing generator C3), said logic timing generator output connection ⑶ drive and protection circuit (6), and the output of the driver protection circuit (6) is connected to the power supply electrode AB (8), and the output of the driver protection circuit (6) further from the sample passes through the filter circuit (7) and from the sample a processing circuit (4) connected to a transmitter scale programmable logic device (1) is input, the transmitter scale programmable logic device (1) is further connected to a transmitter clock synchronization circuit O), said drive and a protection circuit (6) by a direct current power source (5) power; the receiver comprising: an input signal from the receiving electrode (9) passes through the filter and protection circuit (10), amplification and AD sampling circuit (11), large-scale programmable receiver 逻辑器件(1¾对AD采样后的数据处理后输出给接收机控制计算机(14),所述的接收机大规模可编程逻辑器件(1¾还连接接收机时钟同步电路(13);其中所述的驱动及保护电路(6)包括:第一取样电阻(32)、过流检测电路(31)、隔离电路(30)、高压开关驱动电路(34)、高速IGBT电路(33)、第二取样电阻(35),其中,所述的第一取样电阻(32)串接在直流电源(5)的正电压端,第一取样电阻(32)的两端连接到过流检测电路(31)的输入端,所述的过流检测电路(31)的输出端连接到隔离电路(30)的输入端,所述隔离电路(30)的输出端接到发射机大规模可编程逻辑器件(1)的电路输入端;所述的高压开关驱动电路(34)的输入端连接逻辑时序发生器C3)的电路输出端,高压开关驱动电路(34)的输出端接到高速IGBT电路(33)的控制端,高速IGBT电路(33)的输出端通过第二取样 Logic devices (1¾ post treatment data to the receiver output the AD sampling control computer (14), said receiver scale programmable logic device (1¾ the clock synchronization circuit is also connected to the receiver (13); wherein said drive and protection circuit (6) comprising: a first sampling resistor (32), an overcurrent detection circuit (31), the isolation circuit (30), high voltage switch drive circuit (34), a high-speed IGBT circuit (33), a second sampling resistor (35), wherein said first sampling resistor (32) connected in series with a DC power supply (5) is a positive voltage terminal ends of the first sampling resistor (32) connected to the overcurrent detection circuit (31) is input output side, said overcurrent detection circuit (31) connected to the output terminal of isolation circuit (30) an input of the isolation circuit (30) connected to the transmitter scale programmable logic devices (1) circuit input; an input terminal of the high voltage switch drive circuit (34) is connected to a timing generator logic C3) of the output circuit, the output of high voltage switch drive circuit (34) is connected to a high-speed IGBT circuit (33) of the control terminal the output terminal of the high-speed IGBT circuit (33) by a second sampling 阻(35)后连接到供电电极AB (8)上;第二取样电阻(35)的两端接到自采样滤波电路(7)的输入端;所述的自采样处理电路(4)包括依次串接的放大电路(42)、低通及陷波滤波电路和AD采样电路(40),其中,所述的放大电路02)的输入端连接自采样滤波电路(7)的输出端,所述的AD采样电路00)的输出端连接发射机大规模可编程逻辑器件(1)的输入端。 After the barrier (35) is connected to the feeding electrode AB (8); across the second sampling resistor (35) connected to the input sample from the filter circuit (7); said sample from the processing circuit (4) comprising successively amplifier circuit (42) connected in series, a low-pass filter and trap circuit and an AD sampling circuit (40), wherein the amplifier circuit 02) is connected to the output terminal from the input of sampling filter circuit (7), the an AD sampling circuit 00) is connected to the output of the transmitter scale programmable logic device (1) input.
5.根据权利要求4所述的用于电法勘探方法的测量装置,其特征在于,所述的发射机时钟同步电路(2)包括:依次串接的发射机外接GPS天线(20)、发射机GPS模块(21)、发射机隔离电路03)和发射机同步输出线(22),其中发射机隔离电路03)的输出端连接发射机大规模可编程逻辑器件(1)。 The means for measuring an electrical prospecting method method according to claim 4, wherein said clock synchronization circuit transmitter (2) comprising: a transmitter sequentially connected an external GPS antenna (20), transmitting machine GPS module (21), 03) and the transmitter synchronized output lines (22) isolated from the transmitter circuit, wherein the isolation transmitter circuit 03) is connected to the output of the transmitter scale programmable logic device (1).
6.根据权利要求4所述的用于电法勘探方法的测量装置,其特征在于,所述的逻辑时序发生器C3)包括:控制信号电平转换电路0¾与发射机大规模可编程逻辑器件(1)的输出端相连,所述的控制信号电平转换电路0¾的输出端连接隔离及正负倒向电路(26),所述的隔离及正负倒向电路06)的输出连接驱动及保护电路(6)。 The apparatus for measuring an electrical prospecting method method according to claim 4, wherein said timing generator logic C3) comprising: a control signal level converting circuit 0¾ large scale programmable logic device and the transmitter connected to (1) the output of the control signal output terminal of the level conversion circuit is connected 0¾ backward isolation and negative circuit (26), the isolation circuit 06 and the negative Backward) connected to the output drive and The protection circuit (6).
7.根据权利要求4所述的用于电法勘探方法的测量装置,其特征在于,所述的接收机时钟同步电路(13)包括接收机外接GPS天线(50)、接收机GPS模块(51)、时钟同步线(52)、 接收机隔离电路(53),所述的接收机外接GPS天线(50)连接到接收机GPS模块(51)的输入端,所述的接收机GPS模块(51)的输出端连接到接收机隔离电路(5¾的一路输入,所述的时钟同步线(52)连接到接收机隔离电路(53)的另一路输入,所述的接收机隔离电路(53)的输出信号连接到接收机大规模可编程逻辑器件(1¾上。 The apparatus for measuring an electrical prospecting method method according to claim 4, characterized in that said receiver clock synchronization circuit (13) comprises an external GPS receiver antenna (50), GPS receiver module (51 ), clock synchronization line (52), the receiver isolation circuit (53), the external GPS receiver antenna (50) connected to the GPS receiver module (51) is input, the GPS receiver module (51 ) is connected to the output terminal of the receiver isolation circuit (5¾ one input, said clock synchronization line (52) connected to the receiver isolation circuit (53) a further input of the receiver isolation circuit (53) the receiver output signal is connected to a large scale programmable logic device (on 1¾.
CN 201010555314 2010-09-09 2010-11-24 Electrical prospecting method and measuring device CN102053278B (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN201010286580.7 2010-09-09
CN201010286580 2010-09-09
CN 201010555314 CN102053278B (en) 2010-09-09 2010-11-24 Electrical prospecting method and measuring device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201010555314 CN102053278B (en) 2010-09-09 2010-11-24 Electrical prospecting method and measuring device

Publications (2)

Publication Number Publication Date
CN102053278A true CN102053278A (en) 2011-05-11
CN102053278B true CN102053278B (en) 2011-10-26

Family

ID=43957803

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201010555314 CN102053278B (en) 2010-09-09 2010-11-24 Electrical prospecting method and measuring device

Country Status (1)

Country Link
CN (1) CN102053278B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103412338A (en) * 2013-08-13 2013-11-27 北京桔灯地球物理勘探有限公司 Pseudo-random code electrical instrument

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103207413B (en) * 2011-11-16 2014-11-12 中国地质大学(北京) Electrical prospecting device and system
CN102540259A (en) * 2011-12-21 2012-07-04 吉林大学 High-density electrical exploration transmitter
CN102520449B (en) * 2011-12-21 2013-08-07 吉林大学 Receiver device of high density electric method device
CN102590869B (en) * 2012-03-19 2013-11-13 中国科学院电工研究所 Artificial field source frequency domain electrical prospecting method and prospecting system
CN103558648B (en) * 2013-11-08 2016-09-28 吉林大学 Untethered wells and micro - seismic electrically MS system and test method
CN105607131A (en) * 2016-01-11 2016-05-25 甘肃省有色地质调查院 Method and apparatus for obtaining full-region apparent resistivity spectrum of ground by using coding source electromagnetic sounding method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6211807B1 (en) 1999-05-26 2001-04-03 Geometrics System using spread spectrum modulation for locating underground objects
CN1163764C (en) 2000-05-19 2004-08-25 何继善 Electrical active-source frequency domain exploration method
CN1292265C (en) 2005-03-11 2006-12-27 湖南继善高科技有限公司 Device for measuring pseudo-random three frequency geoelectric response of geoelectric field

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6211807B1 (en) 1999-05-26 2001-04-03 Geometrics System using spread spectrum modulation for locating underground objects
CN1163764C (en) 2000-05-19 2004-08-25 何继善 Electrical active-source frequency domain exploration method
CN1292265C (en) 2005-03-11 2006-12-27 湖南继善高科技有限公司 Device for measuring pseudo-random three frequency geoelectric response of geoelectric field

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
金昊.可控震源伪随机扫描技术研究.《中国优秀硕士学位论文全文数据库》.2006,全文.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103412338A (en) * 2013-08-13 2013-11-27 北京桔灯地球物理勘探有限公司 Pseudo-random code electrical instrument

Also Published As

Publication number Publication date Type
CN102053278A (en) 2011-05-11 application

Similar Documents

Publication Publication Date Title
Jones et al. A comparison of techniques for magnetotelluric response function estimation
CN102062877A (en) Nuclear magnetic resonance detection device and method for advanced detection of water bodies in front
US20050289408A1 (en) System and method for characterizing a signal path using a sub-chip sampler
CN1580818A (en) Artificial source time frequency electro magnetic bathymetry
CN1936621A (en) Nuclear magnetic resonance and transient electromagnetic combined instrument and method
Lilley A Magnetometer Array Study Across Southern Victoria and Bass Strait Area, Australia
Egbert et al. DC trains and Pc3s: Source effects in mid‐latitude geomagnetic transfer functions
JPH04269682A (en) Multi-channel digital receiver for global position discovery system
CN102183792A (en) Artificial source frequency domain electromagnetic sounding device and measurement method
Zhou et al. Migration velocity analysis and prestack migration of common-transmitter GPR data
US20120010818A1 (en) Collecting Control Source Electromagnetic Signals
CN102426393A (en) Electric prospecting method and device
CN101710166A (en) Method for monitoring partial discharge of power cable connector on line
Coppens et al. Observation of radio signals from air showers at the Pierre Auger Observatory
CN102012525A (en) Distribution type multi-parameter deep electromagnetic section imaging system and measuring method thereof
CN202003036U (en) Mine transient electromagnetic instrument
CN101620277A (en) Controlled source audio-frequency magnetotelluric (CSAMT) double-transmitting multi-receiving data acquiring system and CSAMT double-transmitting multi-receiving data acquiring method
CN202033480U (en) Electrode signal detection device for micro-resistivity imaging apparatus
CN1673776A (en) Technical program for excitation electric absolute phase measuring and time-frequency excitation electric multi parameter simultaneous measuring
CN103018781A (en) 2-dimensional/3-dimensional nuclear magnetic resonance and transient electromagnetism combination instrument and field work method
CN104035137A (en) Underground full-space transient electromagnetic detecting instrument and detection method
CN103207413A (en) Electrical prospecting device and system
WO2008085063A1 (en) Method for data acquisition
CN202330736U (en) Electric-method exploration device
CN102096111A (en) Transmitting-receiving antenna separation type nuclear magnetic resonance water exploring device and water exploring method

Legal Events

Date Code Title Description
C06 Publication
C10 Entry into substantive examination
C14 Grant of patent or utility model
CF01