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Publication numberCN102053278 B
Publication typeGrant
Application numberCN 201010555314
Publication date26 Oct 2011
Filing date24 Nov 2010
Priority date9 Sep 2010
Also published asCN102053278A
Publication number201010555314.X, CN 102053278 B, CN 102053278B, CN 201010555314, CN-B-102053278, CN102053278 B, CN102053278B, CN201010555314, CN201010555314.X
Inventors李浩宇, 罗先中, 赵壁如
Applicant天津英驰勘探技术有限公司
Export CitationBiBTeX, EndNote, RefMan
External Links: SIPO, Espacenet
Electrical prospecting method and measuring device
CN 102053278 B
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.
Claims(7)  translated from Chinese
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 the transmitter current waveform having a pseudo-random code characteristic as an incentive to the ground by the transmitter signal, the receiver receives the voltage signal generated by the excitation signal to obtain the pulse transition function by mathematical treatment then obtained by fast Fourier transform amplitude corresponding frequency band frequency and phase-frequency characteristic curve characteristic curve and get the amplitude values of the frequency, the phase value, and obtain apparent resistivity and phase parameters have geophysical significance; wherein the Mathematical treatment to get the pulse transition function mathematical treatment of the following:
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: Wherein: y (t) is obtained by measuring the signal apparatus, i.e., receives the measurement signal between electrodes Li, G (t-0) is the pulse transition function, U (O) is a power signal that is pseudo random signal, e (t) interference signal; instrument measurement signal obtained convolution power signal u (ο), for y (t) reconstructed to give:
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 supply signal using a pseudo-random code, 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 and the pseudo-random code correlation is small, so can be approximated as:
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。 e is the convolution of the interference signal; when η is sufficiently large, the desired signal-to-noise ratio of the magnification of the A2n-l) / 2n, so by changing η sufficient SNR characteristics so as to obtain closer to the true value pulse transition function; process which has made apparent resistivity and phase parameters have geophysical significance is as follows: the excitation signal sent to do the autocorrelation function of the transition process to give impulse excitation signal sent to do the cross-correlation process the received signal to obtain a received signal pulse transition function, pulse transition function of the excitation signal is sent to do a fast Fourier transform, the real and imaginary parts of each frequency point lower signal, which respectively amplitude-frequency excitation signal transmitted and phase-frequency characteristic curve characteristic curve; Similarly, pulse transition function of the received signal do fast Fourier transform, amplitude of the received signal frequency and phase-frequency characteristic curve characteristic curve; the frequency, the phase of the received signal with a frequency characteristic curve minus the phase excitation signal to be transmitted frequency characteristic curve of the corresponding frequency values, each frequency to obtain the absolute phase value Φ s; amplitude of the excitation signal amplitude of the received signal with a frequency characteristic curves for each transmitted frequency divided by the frequency characteristic curve corresponding frequency value, and then multiply means the coefficient K to obtain the 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. electrical prospecting method according to claim 1, wherein, wherein said sending a pseudo-random code characteristic of the current waveform pseudo-random code length is adjustable, optional origin polynomial, code rate is adjustable, Start Phase adjustable excitation signal is transmitted from the beginning phase, and then click Send accordance yards long, origin polynomials, code rate, and the initial phase will have a pseudo-random nature of the current waveform is set to 2n-l for the cycle , η is an integer greater than O 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。 3. The electrical prospecting method according to claim 1, characterized in that the current minimum frequency wave excitation signal transmitted by the transmitter to 2_1 (ιΗζ, the 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逻辑器件(1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(1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电阻(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。 Electrical measuring apparatus prospecting method according to claim 4. A method for, including a transmitter and a receiver, wherein said transmitter comprises: a transmitter scale programmable logic device (1) and transmitter control computer (0) of the input and output is connected to the transmitter scale programmable logic device (1) and the output of logic timing generator C3) connected to said logic timing generator ⑶ output connected to the drive and protection circuits (6), the output drive and protection circuit (6) connected to the supply electrodes AB (8), the output drive and protection circuit (6) is also followed by the self-sampling filter circuit (7) and from sampling the processing circuit (4) is connected to the transmitter scale programmable logic device (1) of the input of the transmitter scale programmable logic device (1) is also connected to a transmitter clock synchronization circuit O), said drive and protection circuit (6) (5) power from a DC power source; said receiver comprising: an input signal from the receiver electrode (9) passes through the filter and protection circuit (10), amplify and AD sampling circuit (11), Receiver large-scale programmable logic devices (1 after AD after sampling data processing output to the receiver control computer (14), said receiver scale programmable logic devices (1 also connected to the receiver clock synchronization circuit (13 ); wherein said drive and protection circuit (6) comprises: a first sampling resistor (32), over-current detection circuit (31), isolation circuit (30), high-voltage switch drive circuit (34), high-speed IGBT circuit (33 ), a second sampling resistor (35), wherein said first sampling resistor (32) connected in series in the DC power supply (5) of the positive voltage terminal, connected to both ends of a first sampling resistor (32) to the overcurrent detection circuit (31) input terminal, an output terminal of the overcurrent detection circuit (31) is connected to an isolation circuit (30) input terminal, an output terminal of said isolation circuit (30) is connected to large-scale programmable transmitter Logic (1) circuit input; the high voltage switch drive circuit (34) connected to the input logic timing generator C3) the output of the circuit, the output of high voltage switch drive circuit (34) is connected to the high-speed IGBT circuit output (33) of the control terminal, high-speed IGBT circuit (33) by the second sampling resistor (35) is connected to the power supply after the electrode AB (8) on; ends of the second sampling resistor (35) is connected to self-sampling filter The self-sampling processing circuit (4) comprises a series of sequentially amplifying circuit (42), low pass and notch filter circuit and AD sampling circuit (40), wherein the amplification; circuit (7) of the input circuit 02) connected to the input from the sampling filter circuit (7) of the output terminal, AD sampling circuit according to 00) connected to the output 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)。 5. The measuring device for electrical prospecting method according to claim 4, wherein said transmitter clock synchronization circuit (2) comprising: a series of successively external GPS transmitter antenna (20), transmit Machine GPS module (21), a transmitter isolation circuit 03) and the transmitter synchronization output line (22), wherein the transmitter isolation circuit 03) transmitter connected to the output of large-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0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0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)。 6. The measuring device for electrical prospecting method according to claim 4, wherein said logic timing generator C3) comprising: a control signal level shifting circuit 0 large-scale programmable logic device with a transmitter (1) connected to the output control signal level shifting circuit 0 connected to the output terminal of the isolation and the negative backward circuit (26), and plus or minus the backward isolation circuit 06) connected to an output drive and 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(5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(1上。 7. The measuring apparatus for electrical prospecting method according to claim 4, wherein said receiver clock synchronization circuit (13) includes a receiver external GPS 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) input terminal, said GPS receiver module (51 ) The output is connected to receiver isolation circuit (5 one input, said clock synchronization line (52) connected to the receiver isolation circuit (53) of the other inputs, the receiver isolation circuit (53) The output signal is connected to the receiver large-scale programmable logic devices (on 1.
Description  translated from Chinese

电法勘探方法及测量装置 Electrical prospecting method and measuring device

技术领域 Technical 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 to electrical prospecting method and measuring device having a strong anti-active source frequency domain.

背景技术 Background

[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 a broad and non-ferrous status important, China's national economy and national defense construction in an 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 cheap exports of low value-added non-ferrous metals and iron ore, the contradiction rely heavily on imports of high-end products more and more prominent, improve self-sufficiency level of protection of resources, to support national economic development and the protection of national security and other aspects are more and more required in the production of deep mines or nearby and the corresponding metallogenic belt deep mine, 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 electrical prospecting main use of a conductive material, induced polarization resistance, permeability, dielectric, piezoelectric and electric shock, etc., can now electrical measurements on the ground, air or sea, but still ground-based electrical prospecting. 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。 Methods are many types of electrical prospecting, the formation mechanism of the field source from one source, and natural field workshops sources can be divided into active and passive source of electrical power source method into two categories, which are more active source of electrical applications, which Representative methods of resistivity method, induced polarization method, charging method, frequency 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 and instrument exploration techniques more and more, the United States, France, Canada, Russia, China and so the production of electrical prospecting equipment. 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 to carry out prospecting work too. 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 10 years of our country almost a hundred electrical studies and exploration projects practice, proved electric prospecting in the geological prospecting areas can achieve good results.

[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, the modern information society omnipresent electromagnetic signal, industrial and domestic electromagnetic interference worsening, conventional electrical prospecting instruments are difficult to properly overcome electromagnetic interference satisfactory electrical exploration data; on the other hand, with the depletion and improve surface mining technology resources, to the deep to mine is the inevitable trend of social development. 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 anti-electromagnetic interference performance of the instrument and to improve the resolution of the deep exploration, has taken to increase the supply current methods and techniques in the areas of electromagnetic interference is not serious 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, due to safety and technical factors, the supply current can not be infinitely improved, and being produced in mining, railway, high voltage corridor and cities, towns and other human activity prone areas, increasing the supply current method in a strong stray current in front of the 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] without large currents, interference, high resolution is the future direction of electrical prospecting instrument, and only that, 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 electrical prospecting resolution.

发明内容 DISCLOSURE

[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。 Technical Problem [0007] The present invention solves is to provide a strong anti-interference, it can be effectively measured at low power, and is capable of multiple sets of equipment for electrical prospecting method and measuring device at the same time.

[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 solution adopted by the invention is: A method of electrical prospecting and measuring apparatus, wherein the electrical prospecting methods, including sending a current waveform having a pseudo-random code characteristic to the ground by the transmitter as the excitation signal, the receiver receiving

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 voltage signal generated by the excitation signal, obtained by mathematical treatment pulse transition function, and then get the amplitude-frequency curve of the corresponding frequency band by fast Fourier transform and phase frequency curve and get the amplitude of each frequency, phase values, these parameters made 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 having characteristics of a pseudo-random code PRN code [0009], wherein the length is adjustable, optional origin polynomials, code rate is adjustable, adjustable start phase, the excitation signal is transmitted from the initial phase current wave began, according to the set code length, origin polynomials, code rate, and the initial phase will have a pseudo-random nature of sequentially transmitted to 2n-l cycle, η is an integer less than 20 is greater than 0.

[0010] 所述的数学处理过程如下: [0010] The mathematical process is as follows:

[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 signal apparatus, i.e., the received signal is measured between electrodes Li, G (t_0) pulse transition function, U (O) is the signal power, the pseudo random signal, e ( t) is the 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-powered instrumentation signals u (ο), for 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 using a pseudo-random code, 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] Since the interference signal and the pseudo-random code correlation is small, it 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] Thus when η is sufficiently large, the desired signal-to-noise ratio of the magnification of the J2n-l) / 2n, so by changing η sufficient SNR characteristics so as to obtain closer to the true value of the pulse transition function.

[0022] 所述的取得地球物理意义的参数是: [0022] acquire geophysical significance of the 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 sent to do the autocorrelation function of the transition process to give impulse excitation signal transmitted, the received signal processing to give impulse to do the cross-correlation function of the received signal transition, the transition function of the pulse excitation signal is sent to do a fast Fourier transform give each frequency under real and imaginary parts of the signal, thereby respectively amplitude-frequency excitation signal transmitted and phase-frequency characteristic curve characteristic curve; Similarly, the pulse transition function of the received signal to do a fast Fourier transform to obtain a received signal The amplitude-frequency and phase-frequency characteristic curve characteristic curve; the frequency, phase frequency characteristic values of the received signal minus the phase frequency curve characteristic curve corresponding excitation signals transmitted frequency value to obtain the absolute phase value of each frequency point; with Amplitude of the excitation signal amplitude of the received signal frequency characteristic curves for each transmitted frequency divided by the frequency characteristic curve corresponding frequency point value, multiplied by the coefficient K means to obtain the 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22Ηζ。 [0024] The current waveform excitation signal transmitted by the transmitter of a minimum frequency of 2_1 (ιΗζ, maximum frequency is 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 electrical prospecting method for measuring apparatus includes a transmitter and a receiver, the transmitter comprising: a transmitter large-scale programmable logic control input and output devices and the transmitter is connected to the computer, the transmitter large-scale programmable logic device output and logic timing generator connected to the output of the logical timing generator connected to the drive and protection circuit, output drive and protection circuit is connected to the power supply electrodes AB, said drive and the output of the protection circuit is also connected to the transmitter sequentially through large-scale programmable logic device input terminal of the filter circuit from sampling and sample processing circuit from said transmitter scale programmable logic device is also connected to a transmitter clock synchronization circuit, the drive and protection circuit is powered by said DC power source;

[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 electrode passes through the filter and protection circuit, amplifier and AD sampling circuit and receiver after large-scale programmable logic device output control computer to the receiver, the 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。 Transmitter clock synchronization circuit [0027] comprises: a transmitter output sequentially concatenated external GPS antenna, transmitter, GPS module, a transmitter and a transmitter sync isolation circuit output line, wherein the transmitter isolation circuit end large-scale programmable logic device with a transmitter.

[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。 Logic timing generator [0028] comprises: a control signal output terminal of the level conversion circuit and the transmitter is connected to a large-scale programmable logic devices, control signal level shifting circuit connected to an output end of the isolation and negative fall to the circuit, the isolation and the negative output of the circuit connected to drive backward and protection circuits.

[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 driver and protection circuit comprising: a first sampling resistor, overcurrent detection, isolation circuit, high voltage switch drive circuit, high-speed IGBT circuit, a second sampling resistor, wherein the first sampling resistor connected in series the positive terminal connected to the output voltage of the DC power supply, both ends of the sample resistance to over-current detection circuit input terminal, said overcurrent detection circuit connected to an input isolation circuit, the isolation circuit output terminal connected to the transmitting circuit input machine large-scale programmable logic device; the input of high voltage switch driving circuit timing generator connected to the logic circuit output, high voltage switch drive circuit to the control terminal of the output of high-speed IGBT circuit, high speed IGBT After the output of the circuit through the second sampling resistor connected to the power supply electrode AB; ends of the second shunt resistor is connected from the sampling filter circuit) input.

[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 sampling processing circuit [0030] The amplifier circuit comprises sequentially connected in series, the low-pass filter and trap circuit and the AD sampling circuit, wherein the amplifier circuit from an input terminal connected to the sample output of the filter circuit, and the the output of said sampling circuit connected to the AD input to the transmitter large-scale programmable logic devices.

[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 clock synchronization circuit includes a receiver external GPS antenna, a GPS receiver module, clock synchronization line, the receiver isolation circuit, according to an external GPS receiver antenna connected to an input of GPS receiver module, The output signal output of the GPS receiver module is connected to one input of the receiver isolation circuit, said clock synchronization input line is connected to another receiver isolation circuit, said receiver isolation circuit connected to the receiver 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 electrical prospecting method and measuring apparatus of the present invention, the method according to the received signal and the power supply signal can be mathematically processed successfully achieved the goal of interference, and characteristics of the pseudo-random code also allows this system to the low-power Under the effective measurement and can simultaneously measure multiple sets of equipment. 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 in the mountains and jungle areas with poor communications due to power low power, portable device, mobile, capable of multiple instruments simultaneously, which provides a quick survey of a large area and production of the deep edge exploration and 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] pseudo-random code sent by the transmitter waveform 1. according to different code lengths, the origin of polynomials, code rate and phase arbitrarily choose OK, you can select the appropriate pseudo-random code for interference waveform different regions to achieve a satisfactory letter noise ratio, which can suppress the production of mining industry good electromagnetic interference, can carry out the production of mining 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 in the same area can choose different code lengths and origin polynomial work to solve the problem of electrical prospecting instrument mutual interference source and thus can not operate simultaneously;

[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 precisely synchronized to ensure that the lower the frequency, the same as the initial phase, allowing multiple frequency amplitude, absolute phase, accurate measurement of the relative phase is conducive to more accurately determine the nature of an exception source carry 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] The anti-jamming device designed to measure effectively reduces the active source of power, to achieve a lightweight and can send more than one machine receives work, to meet the rapid exploration of large areas, particularly in the western desert and reduce the mountain labor-intensive areas, while improving work efficiency.

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 the 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 of 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 logical 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 drive and protection circuit;

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

[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 drawings electrical prospecting method and measuring apparatus of the present invention is made in detail.

[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 electrical prospecting method of the present invention comprises a transmitter to transmit through the underground current waveform having a pseudo-random code features as the excitation signal, the receiver receives the voltage signal generated by the excitation signal to obtain the pulse transition function by mathematical processing, and then to give the corresponding frequency band width by fast Fourier transform frequency curve and phase frequency curve and get the amplitude of each frequency, phase values to obtain these parameters of 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 having characteristics of a pseudo-random code PRN code [0047], wherein the length is adjustable, optional origin polynomials, code rate is adjustable, adjustable start phase, the excitation signal is transmitted from the initial phase current wave began, according to the set code length, origin polynomials, code rate, and the initial phase will have a pseudo-random nature of sequentially transmitted to 2n-l cycle, η is an integer less than 20 is greater than 0.

[0048] 所述的数学处理过程如下: [0048] The mathematical process is as follows:

(•+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 signal apparatus, i.e., the received signal is measured between electrodes Li, G (t_0) pulse transition function, U (O) is the signal power, the pseudo random signal, e ( t) is the 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 signal obtained by convolution power signal measurement) of y (t) is reconstructed to obtain:

[0052] [0052]

J —00 J -00

[0053] [0053]

广+CO 广+CO 广+CO + CO + CO wide wide wide + CO

= 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 using a pseudo-random code, the pulse signal, and therefore [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] Since the interference signal and the pseudo-random code correlation is small, it 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] Thus when η is sufficiently large, the desired signal-to-noise ratio of magnification of the: On-I) / 2η, so by changing η sufficient SNR characteristics, 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)。 So that when η is large enough, you can divide Qn-I) approximated pulse transition 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] acquire geophysical significance of the parameters are: the excitation signal sent to do the autocorrelation function of the transition process to give impulse excitation signal sent to do the cross-correlation process the received signal to obtain the pulse transition function of the received signal transmission The excitation signal pulse transition function to do fast Fourier transform, the real and imaginary parts of the signal at each frequency, thereby respectively amplitude-frequency excitation signal transmitted and phase-frequency characteristic curve characteristic curve; Similarly, the received signal pulse transition function to do the fast Fourier transform, amplitude of the received signal frequency and phase-frequency characteristic curve characteristic curve; the frequency, the phase of the received signal with a frequency characteristic curve minus the phase-frequency characteristic curve corresponding excitation signals transmitted frequency value to obtain the absolute phase value of each frequency point; amplitude of the excitation signal amplitude of the received signal with a frequency characteristic curves for each transmitted frequency divided by the frequency characteristic curve corresponding frequency point value, multiplied 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。 Mathematical processing of the present invention in the early through MATLAB software simulation, mathematical formula used is 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 excitation signal electrical prospecting method of the present invention is transmitted by the 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] The electrical prospecting method of the present invention, that if the use of 2~20 m bit pseudo-random sequence code, the origin of polynomial generated by the following table, according to the well-known theory, based on the origin of the polynomial η can have a variety of different, now Several characteristic polynomial origin are listed below:

[0062] [0062]

M序列位数(η) 部分本源多项式 M sequence of bits (η) part origin polynomial

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 the transmitter power can be set by a computer, such as from 0. 1 s to transmitter transmission cycle to On-l) * T for 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] 1 to 4 yards transmitter power characteristics described in detail as an example, using the polynomial origin

[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] The 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 the excitation signal can use the pseudo-random code [0068] The transmitter transmits the m sequence of four yards, the receiver receives the measurement signal MATLAB software to calculate the measured signal convolution reconstructed, and then sent through a fast Fourier transform The excitation signal was calculated autocorrelation function sends pulse transition excitation signal, the received signal is calculated to make the cross-correlation function of the received signal pulse transition of pulse transition function of the excitation signal is sent to do a fast Fourier transform, each frequency point the real and imaginary parts of lower signal amplitude can be respectively transmitted excitation signal frequency and phase-frequency characteristic curve characteristic curve; Similarly, the pulse transition function of the received signal do fast Fourier transform, amplitude of the received signal frequency characteristic curve 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] with the frequency, phase-frequency characteristic curve of the received signal minus the excitation signal transmitted 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 a frequency characteristic curves for each Amplitude of the excitation signal frequency divided by the transmitted frequency characteristic curve corresponding frequency point value, multiplied by the coefficient K means to obtain the apparent resistivity values Ps = KXU / L

[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 device [0070] The present invention is a method for electrical prospecting, including 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, said transmitter comprising: a transmitter scale programmable logic device connected to the transmitter 1 O O control computer, a large scale programmable logic device transmitter output logic timing 1 generator 3 connected to the output of the logical timing generator 3 is connected to the drive and protection circuit 6, the output drive and protection circuit 6 is connected to the power supply electrode ΑΒ8, the output of the drive and protection circuit 6 also turn Since the sampling circuit 7 through the filter and the Self-sampling processing circuit 4 is connected to the transmitter scale programmable logic device input terminal 1, the transmitter scale programmable logic device is also connected to a transmitter clock synchronization circuit 2, the drive and protection circuit 6 5 powered by a DC power supply;

[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] as shown in Figure 3. The receiver comprises: receiving an input signal from the electrode 9 followed by filtering and protection circuits 10, 11 and the large-scale programmable logic device receiver amplification and AD sampling circuit 12 after output control computer 14 to the receiver, the receiver of a large-scale programmable logic device 12 is also 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 receiver and transmitter of the present invention are synchronized by GPS or by wire synchronous circuit design, clock synchronization error between the two 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 Figure 4, the transmitter clock synchronization circuit 2 comprises: the transmitter sequentially connected in series external GPS antenna 20, GPS transmitter module 21, transmitter 23 and transmitter synchronized isolation circuit output line 22, wherein said transmitter isolation circuit output terminal 23 of the transmitter 1 scale programmable logic device.

[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。 Since the measuring device used in the present invention supporting line electrical prospecting method of synchronization and GPS synchronized in two ways, so when using the GPS synchronization mode, use an external GPS module 20 of the input signal as a synchronization signal, using a wire synchronous mode when [0075] transmitter output synchronization signal to the synchronization 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, wherein the logic timing generator 3 includes: a control signal level shifting circuit 25 is connected to the output of the transmitter scale programmable logic device of said control signal level shifting circuit output terminal 25 is connected to the positive and negative backward isolation circuit 26, isolation, and positive and negative backward said output circuit connected to the drive and heavy protection circuit 6.

[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 sense resistor 32, the overcurrent detection 31, isolation circuit 30, high voltage switch drive circuit 34, the high-speed IGBT circuit 33, a second sampling resistor 35 wherein the first sampling resistor 32 connected in series DC power supply positive voltage terminal 5 is connected across the resistor 32 to the sample over the input current detection circuit 31, the output terminal of the overcurrent detection circuit 31 connected to an input isolation circuit 30, the isolation circuit 30 connected to the output of large-scale programmable logic device transmitter circuit input 1; high voltage switch driving circuit 34 connected to the input logic timing generator 3 The output of the circuit, the output of high voltage switch drive circuit 34 is connected to the control terminal of the high-speed IGBT circuit 33, 33 of the output of high-speed IGBT circuit after a second sampling resistor 35 is connected to the power supply through the electrode AB8; second sampling resistor 35 received from both ends of the input sampling filter 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, since the sampling processing circuit 4 comprises an amplifier circuit in turn connected in series as shown in Figure 42, the low-pass filter and trap circuit 41 and the AD sampling circuit 40, wherein, the input amplifier circuit 42 terminal is connected from the output of the sampling filter circuit 7, the output of AD sampling circuit connected to said transmitter input terminal 40 of the large-scale programmable logic device 1.

[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 clock synchronization circuit 13 comprises a receiver external GPS antenna 50, GPS receiver module 51, the clock synchronization line 52, the receiver isolation circuit 53, the receiver external GPS 8 GPS antenna module 50 is connected to the input of the receiver 51, the GPS receiver module output terminal 51 is connected to one input receiver isolation circuit 53, the clock synchronization line 52 is connected to receiver isolation circuit 53 the other input, the output signal of the receiver isolation circuit 53 is connected to the receiver 12 large-scale programmable logic devices.

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Referenced by
Citing PatentFiling datePublication dateApplicantTitle
CN103412338A *13 Aug 201327 Nov 2013北京桔灯地球物理勘探有限公司Pseudo-random code electrical instrument
Classifications
International ClassificationG01V3/02, G01V3/38
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