CN102882562A - Directional-magnetic-path-based high-signal-to-noise-ratio non-contact signal transmitting system - Google Patents
Directional-magnetic-path-based high-signal-to-noise-ratio non-contact signal transmitting system Download PDFInfo
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- CN102882562A CN102882562A CN2012103004931A CN201210300493A CN102882562A CN 102882562 A CN102882562 A CN 102882562A CN 2012103004931 A CN2012103004931 A CN 2012103004931A CN 201210300493 A CN201210300493 A CN 201210300493A CN 102882562 A CN102882562 A CN 102882562A
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Abstract
The invention discloses a directional-magnetic-path-based high-signal-to-noise-ratio non-contact signal transmitting system. The system comprises a micro processer, a drive circuit, a magnetism transmitting device and a differential amplification circuit, wherein the micro processer and the drive circuit are arranged in a non-ferromagnetic hydraulic cavity; a magnetic signal transmitting part of the magnetism transmitting device is positioned on the inner side of the wall of the non-ferromagnetic hydraulic cavity, and a magnetic signal receiving part is positioned on the outer side of the wall of the non-ferromagnetic hydraulic cavity; the differential amplification circuit is positioned outside the non-ferromagnetic hydraulic cavity; the magnetic signal transmitting part comprises a magnetic signal transmitting iron core and a coil which is arranged on the iron core, and the magnetic signal receiving part comprises a magnetic signal receiving iron core, a first magnetic field sensor which is embedded at the upper end of the magnetic signal receiving iron core and a second magnetic field sensor which is arranged at the lower end of the magnetic signal receiving iron core; the magnetism transmitting device generates a directional magnetic path which passes through the non-ferromagnetic hydraulic cavity; the input end of the micro processor is connected with a signal source, and the output end of the micro processor is connected with the input end of the drive circuit; the output end of the drive circuit is connected with the coil; and the two magnetic field sensors are connected with the differential amplification circuit. By the system, non-contact signal transmission between the interior of the non-ferromagnetic hydraulic cavity and external equipment can be realized.
Description
Technical field
The present invention relates to a kind of non-contact type signal transmission system, be specifically related to the high s/n ratio non-contact type signal transmission system based on orientation magnetic circuits.
Background technology
Be in the hydraulic cavities internal unit under the hydraulic environment and between the equipment of hydraulic cavities outside, need to carry out the transmission of signal.Traditional side signal transmission fado employing is buried the connecting lead wire that passes the hydraulic cavities wall underground inside and external equipment is linked to each other, and has so just greatly increased the complexity of hermetically-sealed construction and processing technology, and will greatly reduce the bulk strength of pressure vessel.
Summary of the invention
For solving above-mentioned problems of the prior art, the object of the present invention is to provide a kind of high s/n ratio non-contact type signal transmission system based on orientation magnetic circuits, the characteristics of utilizing hydraulic cavities to adopt nonferromugnetic material to make more, can realize the non-contact type signal transmission between hydraulic cavities internal unit and hydraulic cavities external equipment, signal to noise ratio is high, simple installation, energy consumption is little, and can not reduce the bulk strength of pressure vessel.
For achieving the above object, the technical solution adopted in the present invention is:
A kind of high s/n ratio non-contact type signal transmission system based on orientation magnetic circuits, comprise the microprocessor 2, the drive circuit 3 that are positioned at nonferromagnetic hydraulic cavities inside, magnetic signal radiating portion 5-1 is positioned at nonferromagnetic hydraulic cavities wall 11 inboards, magnetic signal receiving unit 5-2 is positioned at the magnetic transmitting device 5 in nonferromagnetic hydraulic cavities wall 11 outsides and the differential amplifier circuit 4 that is positioned at nonferromagnetic hydraulic cavities outside; Described magnetic signal radiating portion 5-1 comprises magnetic signal emission iron core 6 and the coil 7 on the magnetic signal emission iron core 6, and described magnetic signal receiving unit 5-2 comprises that magnetic signal receives iron core 8, is embedded in magnetic signal and receives the first magnetic field sensor 9 of iron core 8 upper ends and be embedded in the second magnetic field sensor 10 that magnetic signal receives iron core 8 lower ends; Described magnetic transmitting device 5 produces the orientation magnetic circuits 12 that passes nonferromagnetic hydraulic cavities wall 11; The input of described microprocessor 2 is connected with signal source 1, the output of microprocessor 2 is connected with the input of drive circuit 3, the output of drive circuit 3 is connected with coil 7, and the first magnetic field sensor 9 all is connected with the input of differential amplifier circuit 4 with the output of the second magnetic field sensor 10.
During work, microprocessor 2 is linked to each other with the signal source 1 of hydraulic cavities inside, microprocessor 2 is converted into digital controlled signal with signal source 1 signal, drive circuit 3 is subjected to the generation exciting current corresponding with digital controlled signal in the coil 7 that be controlled at of this digital controlled signal, be the different magnetic flux density signal of power on the other side by coil 7 with the digital signal transition of high-low level namely, and by magnetic signal emission iron core 6 and magnetic signal reception iron core 8 formation orientation magnetic circuits 12, the variation that the first magnetic field sensor 9 in the magnetic signal reception iron core 8 and the second magnetic field sensor 10 measure the magnetic flux density of its position, for orientation magnetic circuits 12, the first magnetic field sensor 9 is identical with the induction level of the second magnetic field sensor 10 positions, opposite direction, therefore be converted into size identical, positive and negative opposite voltage signal, differential amplifier circuit 4 receives the voltage signal of the first magnetic field sensor 9 and the second magnetic field sensor 10, and it is carried out differential amplification, export the difference of this two-way voltage signal.
Be compared with existing technology, the present invention has following advantage:
Because the transmission of the signal of native system is to finish by the magnetic field between two non-touching iron cores, so can realize the non-contact type signal transmission between nonferromagnetic hydraulic cavities internal unit and external equipment, simple installation, and can not reduce the bulk strength of pressure vessel; Because native system is digital signal with analog-signal transitions at first, and then change the magnetic field intensity signal corresponding with digital signal into, then recorded the field signal of opposite direction by the first magnetic field sensor 9 and the second magnetic field sensor 10, and after being translated into same opposite voltage signal, be transferred to differential amplifier circuit 4, by the difference of differential amplifier circuit 4 these two-way voltage signals of output, so native system has good signal to noise ratio.In addition, native system since simple in structure also have install conveniently, power consumption is little, high voltage bearing characteristics.
Description of drawings
Fig. 1 is transmission system structure of the present invention and signal transmission block diagram.
Fig. 2 is the structural representation of magnetic transmitting device of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments the present invention is described in further detail.
As depicted in figs. 1 and 2, a kind of high s/n ratio non-contact type signal transmission system based on orientation magnetic circuits of the present invention, comprise the microprocessor 2, the drive circuit 3 that are positioned at nonferromagnetic hydraulic cavities inside, magnetic signal radiating portion 5-1 is positioned at nonferromagnetic hydraulic cavities wall 11 inboards, magnetic signal receiving unit 5-2 is positioned at the magnetic transmitting device 5 in nonferromagnetic hydraulic cavities wall 11 outsides and the differential amplifier circuit 4 that is positioned at nonferromagnetic hydraulic cavities outside; Described magnetic signal radiating portion 5-1 comprises magnetic signal emission iron core 6 and the coil 7 on the magnetic signal emission iron core 6, and described magnetic signal receiving unit 5-2 comprises that magnetic signal receives iron core 8, is embedded in magnetic signal and receives the first magnetic field sensor 9 of iron core 8 upper ends and be embedded in the second magnetic field sensor 10 that magnetic signal receives iron core 8 lower ends; Described magnetic transmitting device 5 produces the orientation magnetic circuits 12 that passes nonferromagnetic hydraulic cavities wall 11; The input of described microprocessor 2 is connected with signal source 1, the output of microprocessor 2 is connected with the input of drive circuit 3, the output of drive circuit 3 is connected with coil 7, and the first magnetic field sensor 9 all is connected with the input of differential amplifier circuit 4 with the output of the second magnetic field sensor 10.
Operation principle of the present invention is: microprocessor 2 changes the signal that signal source 1 provides into digital controlled signal, drive circuit 3 is subjected to the generation exciting current corresponding with digital controlled signal in the coil 7 that be controlled at of this digital controlled signal, be the different magnetic flux density signal of power on the other side by coil 7 with the digital signal transition of high-low level namely, and by magnetic signal emission iron core 6 and magnetic signal reception iron core 8 formation orientation magnetic circuits 12, the first magnetic field sensor 9 that is embedded in respectively magnetic reception iron core 8 two ends can measure in the orientation magnetic circuits 12 big or small identical with the second magnetic field sensor 10, the magnetic flux density signal of opposite direction, and it is identical to be translated into size, positive and negative opposite two-way voltage signal, this two-way voltage signal is passed to differential amplifier circuit 4 simultaneously, by differential amplifier circuit 4 both differences of output.
Claims (1)
1. high s/n ratio non-contact type signal transmission system based on orientation magnetic circuits, it is characterized in that: comprise the microprocessor (2), the drive circuit (3) that are positioned at nonferromagnetic hydraulic cavities inside, magnetic signal radiating portion (5-1) is positioned at nonferromagnetic hydraulic cavities wall (11) inboard, magnetic signal receiving unit (5-2) is positioned at the magnetic transmitting device (5) in nonferromagnetic hydraulic cavities wall (11) outside and the differential amplifier circuit (4) that is positioned at nonferromagnetic hydraulic cavities outside; Described magnetic signal radiating portion (5-1) comprises magnetic signal emission iron core (6) and the coil (7) on the magnetic signal emission iron core (6), and described magnetic signal receiving unit (5-2) comprises that magnetic receives iron core (8), is embedded in magnetic signal and receives first magnetic field sensor (9) of iron core (8) upper end and be embedded in the second magnetic field sensor (10) that magnetic signal receives iron core (8) lower end; Described magnetic transmitting device (5) produces the orientation magnetic circuits (12) that passes nonferromagnetic hydraulic cavities wall (11); The input of described microprocessor (2) is connected with signal source (1), the output of microprocessor (2) is connected with the input of drive circuit (3), the output of drive circuit (3) is connected with coil (7), and the first magnetic field sensor (9) all is connected with the input of differential amplifier circuit (4) with the output of the second magnetic field sensor (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103004931A CN102882562A (en) | 2012-08-22 | 2012-08-22 | Directional-magnetic-path-based high-signal-to-noise-ratio non-contact signal transmitting system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103004931A CN102882562A (en) | 2012-08-22 | 2012-08-22 | Directional-magnetic-path-based high-signal-to-noise-ratio non-contact signal transmitting system |
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| CN102882562A true CN102882562A (en) | 2013-01-16 |
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| CN2012103004931A Pending CN102882562A (en) | 2012-08-22 | 2012-08-22 | Directional-magnetic-path-based high-signal-to-noise-ratio non-contact signal transmitting system |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101231782A (en) * | 2008-02-22 | 2008-07-30 | 哈尔滨工业大学 | Piping inside and outside communication device based on very low frequency power electromagnetic pulse |
| CN101581214A (en) * | 2009-03-23 | 2009-11-18 | 西安石油大学 | Transient electromagnetic logging device in through-casing well |
| CN101692301A (en) * | 2009-10-12 | 2010-04-07 | 哈尔滨工程大学 | Method for transmitting very low frequency signal of oil-vapor pipe magnet leakage detector |
| CN102520706A (en) * | 2012-01-04 | 2012-06-27 | 孙文多 | Oil-gas well intelligent control device |
| CN102570202A (en) * | 2012-03-12 | 2012-07-11 | 浙江大学 | Underwater equipment interface based on inductive power transmission and wireless local area network (WLAN) signal transmission |
-
2012
- 2012-08-22 CN CN2012103004931A patent/CN102882562A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101231782A (en) * | 2008-02-22 | 2008-07-30 | 哈尔滨工业大学 | Piping inside and outside communication device based on very low frequency power electromagnetic pulse |
| CN101581214A (en) * | 2009-03-23 | 2009-11-18 | 西安石油大学 | Transient electromagnetic logging device in through-casing well |
| CN101692301A (en) * | 2009-10-12 | 2010-04-07 | 哈尔滨工程大学 | Method for transmitting very low frequency signal of oil-vapor pipe magnet leakage detector |
| CN102520706A (en) * | 2012-01-04 | 2012-06-27 | 孙文多 | Oil-gas well intelligent control device |
| CN102570202A (en) * | 2012-03-12 | 2012-07-11 | 浙江大学 | Underwater equipment interface based on inductive power transmission and wireless local area network (WLAN) signal transmission |
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Application publication date: 20130116 |