Piping inside and outside communication device based on very low frequency power electromagnetic pulse

An electromagnetic pulse and communication device technology, applied in the field of communication, can solve problems such as undetectable operation and operation information, and achieve the effects of increased transmission distance and good applicability

Inactive Publication Date: 2008-07-30
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention mainly aims at the problem of undetectable operation and operation information of the mobile carrier in the metal pipe, solves the shielding problem of the electromagnetic signal caused by the metal layer, and proposes a communication device inside and outside the pipe based on very low frequency power electromagnetic pulses

Method used

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  • Piping inside and outside communication device based on very low frequency power electromagnetic pulse
  • Piping inside and outside communication device based on very low frequency power electromagnetic pulse
  • Piping inside and outside communication device based on very low frequency power electromagnetic pulse

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specific Embodiment approach 1

[0019] Specific implementation mode 1: This embodiment is described in conjunction with FIG. 1. This embodiment is composed of a very low frequency power electromagnetic pulse transmitter and its microcontroller 3, a magnetic induction receiving antenna group 4, a signal processing and transmission device 5 and a computer 6; The transmitting terminal of the power electromagnetic pulse transmitter and its microcontroller 3 emits a very low frequency power electromagnetic pulse signal, the magnetic induction receiving antenna group 4 receives the very low frequency power electromagnetic pulse signal and converts it into a voltage signal, and transmits it to the signal processing and transmission device 5 , The signal processing and transmission device 5 filters and amplifies the voltage signal, extracts the signal component with the same frequency as the transmitter, and transmits it to the computer 6 for data analysis and analysis of communication commands. The VLF power electromag...

specific Embodiment approach 2

[0020] The second embodiment: This embodiment will be explained with reference to Fig. 2. The difference between this embodiment and the first embodiment is that the VLF power electromagnetic pulse transmitter and its microcontroller 3 are composed of single-chip microcomputer 3-1 and D / A conversion 3-2. , Power amplifier 3-3, transmitting coil 3-4, magnetic core 3-5, backup battery 3-6, first voltage conversion module 3-7, second voltage conversion module 3-8, microcontroller 3-9, Battery charger 3-10, switch S 1 , Switch tube S 2 , Relay S 3 , Zener tube D 1 , The first diode D 2 , The second diode D 3 , The first resistance R 1 , The second resistor R 2 , 24V power cord L 1 , CAN communication line L 2 , Ground L 3 Composition; 24V power cord L 1 Connect the input terminal of the first voltage conversion module 3-7 and the switch S 1 The output terminal of the first voltage conversion module 3-7 is connected to the first diode D 2 The anode, the first diode D 2 The cathode is c...

specific Embodiment approach 3

[0025] Specific embodiment three: this embodiment is described with reference to FIG. 2. The difference between this embodiment and the specific embodiment two is that the transmitting coil 3-4 adopts distributed double-turn winding, which reduces the adverse effects caused by the coupling capacitance between the coils, and transmits The coil 3-4 is joined with alloy wire as a magnetic core to enhance the emission intensity of electromagnetic signals. Other components and connection modes are the same as in the second embodiment.

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Abstract

The invention provides a communicator inside and outside conduits based on very low frequency power electromagnetic pulse and relates to the communication field. The invention solves the problem of shielding of electromagnetic signals by metallic layers. A very low frequency power electromagnetic pulse emitter provided by the invention and the transmitting terminal of a microcontroller (3) transmit a very low frequency power electromagnetic pulse signal; a magnetic induction receiving antenna group (4) receives the very low frequency power electromagnetic pulse signal, and converts the very low frequency power electromagnetic pulse signal into a voltage signal, and transmits the voltage signal to a signal processing and transmission device (5). The signal processing and transmission device (5) filters and magnifies the voltage signal, extracts the signal components which are the same with the frequency of the emitter, and transmits the signal components to a computer (6) for data analysis and resolving communication instructions. The invention can communicate reliably inside and outside in the environment of metallic conduits. By adopting the invention, when a signal is transmitted in metal, silt, soil and briny environment, the electromagnetic signal attenuation factor is small. By comparing the signal transmitted by the invention with high frequency electromagnetic wave signals, the propagation length of the signal in a lossy medium is significantly improved.

Description

Technical field [0001] The present invention relates to the field of communication, in particular to the communication technology inside and outside the metal pipeline. Background technique [0002] With the rapid growth of pipelines laid by my country's petrochemical and municipal construction departments, there is a huge demand for quality inspection of newly laid pipelines, maintenance of defects in old pipelines, dirt blockage cleaning in pipelines, and distribution surveying and mapping of unknown underground pipelines. The mobile carrier in the pipeline is a device specially used for detection, pigging and operations in pipeline engineering. It can carry various instruments to run in the pipeline to complete pipeline flaw detection, pipeline leak repair and other operations as well as pigging and other engineering tasks. In the past, in pipeline engineering, the troubleshooting and maintenance of fault points, due to the low accuracy of target location positioning, often us...

Claims

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Application Information

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IPC IPC(8): G08C17/00G08C17/02G05B19/042G05B19/418F16L55/26F16L101/30
CPCY02P90/02
Inventor 张晓华齐海铭陈宏钧邓宗全唐德威
Owner HARBIN INST OF TECH
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