Device and method for adjusting the front and rear edges of a transmitter outputting a rectangular wave
An adjustment device, front and rear edge technology, applied in measurement devices, pulse shaping, sound wave re-radiation, etc., can solve problems such as adverse effects on data quality, affecting the correct interpretation of exploration results, complex situations, etc., to improve reliability and adaptability , the effect of reducing electromagnetic interference and improving quality
Active Publication Date: 2016-05-18
HUNAN UNIV OF SCI & TECH
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Problems solved by technology
[0005] (3) The interference degree of the transmitter to the receiver changes with the length of the output loop, the resistance of the ground loop, and the signal frequency, etc. The situation is more complicated
[0006] (4) The electromagnetic interference generated by the transmitter will have a negative impact on the quality of the data received by the receiver, and even affect the correct interpretation of the exploration results
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[0034] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.
[0035] see figure 1 , the electrical method signal transmitter of this embodiment outputs a rectangular wave front and rear edge adjustment device including an RC waveform edge adjustment circuit with multiple adjustable time constants and a manual switch, a voltage detection circuit, a current detection circuit, a temperature detection circuit, and a microprocessor Devices, LCD displays, keyboards, communication modules and power circuits. From figure 1 It can be seen in the figure that the output signal of the electrical signal transmitter is processed by the RC waveform edge adjustment circuit, and then supplies power to the earth through the wire and the ground electrode. The output signal processed by the RC waveform edge adjustment circuit is measured by the voltage detection circuit and the current detection circuit. Obtain and displa...
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The invention discloses a regulating device and regulating method for the front edge and the back edge of a rectangular wave output by a transmitter. The regulating device for the front edge and the back edge of the rectangular wave output by the transmitter is characterized by comprising a resistance and capacitance (RC) wave form edge regulating circuit, a selector switch and a microprocessor, wherein the selector switch and the microprocessor are connected with the RC wave form edge regulating circuit respectively, an input end of the RC wave form edge regulating circuit is connected with a signal output pole of an electrical method signal transmitter or an electromagnetic method signal transmitter, an output end of the RC wave form edge regulating circuit is connected with a voltage detection circuit, a current detection circuit and the ground in sequence, output ends of the voltage detection circuit and the current detection circuit are respectively connected with the microprocessor, a temperature detection circuit is connected with the microprocessor and a temperature sensor which is arranged in the RC wave form edge regulating circuit, and the microprocessor is further connected with a liquid crystal display, a keyboard, a communication module and a power circuit. By means of the regulating device and the regulating method for the front edge and the back edge of the rectangular wave output by the transmitter, the wave forms of RC wave form edge regulating circuit output signals and the phase relation between a voltage and a current are measured and displayed directly, and the purpose of regulating the rate of change of the front edge and the back edge of the rectangular wave fast and visually is achieved.
Description
technical field [0001] The invention belongs to the technical field of geophysical prospecting instruments, and in particular relates to a technology for adjusting front and rear waveforms of a rectangular wave output by an electrical prospecting signal transmitter, in particular to a device and method for adjusting the front and rear waveforms of a rectangular wave output by an electrical prospecting signal transmitter. Background technique [0002] At present, in the field of artificial source electric method and electromagnetic method exploration, the electrical signal or electromagnetic method signal transmitter needs to directly supply power to the earth, the output voltage is high, and the output current is relatively large. In order to ensure the output efficiency of the transmitter, a rectangular wave output is generally used. The output circuit is inductive, and high induced voltage is likely to be generated at the edge of the rectangular wave, forming strong electro...
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IPC IPC(8): G01V3/00H03K5/01
Inventor 付国红
Owner HUNAN UNIV OF SCI & TECH