CN108680762A - A kind of the rotating speed harvester and acquisition method of anti-nuclear electromagnetic pulse - Google Patents
A kind of the rotating speed harvester and acquisition method of anti-nuclear electromagnetic pulse Download PDFInfo
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- CN108680762A CN108680762A CN201810486093.1A CN201810486093A CN108680762A CN 108680762 A CN108680762 A CN 108680762A CN 201810486093 A CN201810486093 A CN 201810486093A CN 108680762 A CN108680762 A CN 108680762A
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- signal
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- electromagnetic pulse
- rotating speed
- fluted disc
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
- G01P3/42—Devices characterised by the use of electric or magnetic means
- G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
- G01P3/48—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage
- G01P3/481—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals
- G01P3/487—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals delivered by rotating magnets
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- General Physics & Mathematics (AREA)
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
Abstract
The invention discloses a kind of rotating speed harvester of anti-nuclear electromagnetic pulse and acquisition methods, two electromagnetic inductive probes form differential type electromagnetic induction sensor, the rotation of fluted disc makes differential type electromagnetic induction sensor generate balanced signal, balanced signal is transmitted by harness, common mode choke and isolating transformer can eliminate the common mode interference in balanced signal, and convert balanced signal to the non-equilibrium signal of control system needs.Differential type electromagnetic induction sensor can convert non-equilibrium signal to the balanced signal for facilitating transmission on harness, the magnetic coupling of strong electromagnetic pulse is mutually offseted to and is not influenced the generation and transmission of tach signal, propagation of the balanced signal on harness can eliminate external radiation interference and external transmitting interference.The rotating speed harvester and acquisition method of the anti-nuclear electromagnetic pulse of the present invention can eliminate the common mode coupling in the lower sensor coupling and cable generated of strong electromagnetic pulse coupling, ensure that the normal operation of system, manufacturing cost are relatively low.
Description
Technical field
The present invention relates to a kind of rotating speed measurement methods of anti-nuclear electromagnetic pulse of field of electromagnetic compatibility.
Background technology
Electronic control system is play an important role in aerospace, Industry Control and intelligent control, but is produced in electronics
During product fast development, the shortcomings that electronic product also constantly exposes poor anti jamming capability；Especially in Code in Hazardous Special Locations
When being acted on by strong electromagnetic pulse, larger damage can be generated to control system.How electronic control system anti-strong is increased
The interference performance of electromagnetic pulse becomes the object of more and more scientific and technical personnel concern.
Invention content
Goal of the invention：The rotating speed harvester and acquisition method of a kind of anti-nuclear electromagnetic pulse of the present invention can eliminate forceful electric power
Common mode coupling in the lower sensor coupling and cable generated of magnetic field impulse coupling, can ensure the normal operation of system, be manufactured into
This is relatively low.
Technical solution：A kind of rotating speed harvester of anti-nuclear electromagnetic pulse, the rotating speed acquisition dress of the anti-nuclear electromagnetic pulse
Set including differential type electromagnetic induction sensor, shielded wire harness, common mode choke, isolating transformer and the first RC filter circuits and
2nd RC filter circuits, the differential type electromagnetic induction sensor include the first magneto-electric probe and the second magneto-electric probe, institute
State the first magneto-electric probe and the second magneto-electric probe include coil, iron core, permanent magnet and supporting rack, iron core, permanent magnet and
Supporting rack is sequentially connected, and iron core is against external fluted disc, and when making the forward position of first sensor probe alignment gear teeth, second passes
Sensor, which is popped one's head in, can be directed at the rear edge of gear teeth, and coil is wound on iron core, the coil and the second magneto-electric of the first magneto-electric probe
End is connected the coil of probe in the same direction, and is grounded by the first RC filter circuits, the coil of the first magneto-electric probe
The other end and the other end of coil of the second magneto-electric probe pass through two input terminals of shielded wire harness and common mode choke to connect
Connect, two output ends of common mode choke respectively with the end in the same direction of first winding of isolating transformer primary side winding, second
The incorgruous end of winding connects, and the incorgruous end of first layer winding is connected with the end in the same direction of second layer winding, and is filtered by the 2nd RC
The vice-side winding of circuit ground, isolating transformer connects peripheral control unit A D interface.
Further, gear gap and fluted disc tooth is of same size.
Further, it for different fluted discs, tooth form, is adjusted by adjusting the position popped one's head in sensor.
A kind of rotating speed acquisition method of anti-nuclear electromagnetic pulse, includes the following steps：
Fluted disc rotates, and when the iron core of a magneto-electric probe is directed at fluted disc tooth, when magnetic flux increases, another magneto-electric is popped one's head in
Iron core leave fluted disc tooth, magnetic flux reduces；The direction of winding of two magneto-electrics probe is on the contrary, the tach signal of fluted disc tooth is converted
For balanced signal, balanced signal has locking phase；When nuclear electromagnetic pulse works, it converts interference signal to one group of same-phase
Common-mode signal；First RC filter circuits are filtered differential signal, and Transmission system is made to have high impedance to low frequency ground connection；
Radiation interference outside shielded wire harness elimination and external transmitting interference；Common mode choke, isolating transformer, which acquire rotating speed, is
Common-mode signal in system is filtered, and the balanced signal in system is converted into the non-equilibrium letter of circuit system needs
Number；The 2nd RC filter circuits make Transmission system with high impedance.
Advantageous effect：
The purpose of the present invention prevents the electromagnetic pulse interference of tach signal in control system, prevents because of rotary speed system
The malfunction problem of control system, improves the anti-interference energy of control system caused by being interfered or damage by strong electromagnetic pulse
Power ensures the normal operation of box house controller.Using differential type electromagnetic induction sensor to the lead and trail edge of fluted disc tooth
It is detected, generates a balanced signal, and when nuclear electromagnetic pulse works, what differential type electromagnetic induction sensor generated is one
The common-mode signal of group same-phase；What is generated on External cable simultaneously is also common mode interference.In the terminal of signal transmission, pass through common mode
Choke coil and isolating transformer filter out the balanced signal of transmission and common mode interference, and balanced signal is transformed into control
The non-equilibrium signal that system needs, to eliminate the interference of strong electromagnetic pulse.Differential type electromagnetic induction sensor structure, can be with
By the tach signal inversion equilibrium signal of fluted disc, the interference of strong electromagnetic pulse is converted into common mode interference signal, in order to ensure to put down
The quality of weighing apparatus signal, the gap of fluted disc and the foozle of tooth cannot be too big, and the position of differential type electromagnetic induction sensor should
When ensureing the forward position of first sensor probe detection tooth, the rear edge of second sensor probe detection tooth.Before isolating transformer
Face must add choke coil, and the primary side of isolating transformer is two coil configuration, and the secondary side of isolating transformer is single phase transformer knot
The conversion of balanced signal and non-equilibrium signal may be implemented in structure.
Description of the drawings
Fig. 1 is that nuclear electromagnetic pulse protects rotating speed acquisition principle figure；
Fig. 2 is differential type electromagnetic induction sensor nuclear electromagnetic pulse preventing principle figure；
Fig. 3 is differential type electromagnetic induction sensor signal output waveform figure；
Fig. 4 is nuclear electromagnetic pulse interference waveform figure；
Fig. 5 is acquisition system output waveform figure.
Specific implementation mode
Further explanation is done to the present invention below in conjunction with the accompanying drawings.
A kind of rotating speed harvester of anti-nuclear electromagnetic pulse as shown in Figure 1, the rotating speed acquisition of the anti-nuclear electromagnetic pulse
Device includes differential type electromagnetic induction sensor, shielded wire harness 3, common mode choke 4, isolating transformer 5 and the first RC filtering
Circuit 6 and the 2nd RC filter circuits 7, differential type electromagnetic induction sensor be mounted on fluted disc near supporting rack on, and not with
The rotation of fluted disc and rotate, the differential type electromagnetic induction sensor include the first magneto-electric probe 2 and second magneto-electric probe
8, first magneto-electric probe 2 and the second magneto-electric probe 8 include coil 10, iron core 11, permanent magnet 12 and supporting rack 13,
Iron core 11, permanent magnet 12 and supporting rack 13 are sequentially connected, and iron core is wound on against external fluted disc, coil on iron core, gear gap and
Fluted disc tooth it is of same size, for different fluted discs, tooth form, be adjusted by adjusting the position popped one's head in sensor.It is described
First magneto-electric probe 2 is arranged in the forward position of fluted disc tooth, and the second magneto-electric probe 8 is arranged in the rear edge of fluted disc tooth and tooth
Relative position between disk 1 ensures that balanced signal has locking phase.Differential type electromagnetic induction sensor can passive, and
Non-equilibrium signal is converted in the case of not needing other conversion equipments the balanced signal for facilitating transmission on harness, differential type electricity
Magnetic induction sensor the magnetic coupling of strong electromagnetic pulse can mutually be offseted and do not influence tach signal generation and
Transmission.
The coil of first magneto-electric probe 2 holds Q to be connected in the same direction with the coil of the second magneto-electric probe 8, and passes through first
RC filter circuits 6 are grounded, the coil of the other end N and the second magneto-electric probe 8 of the coil of the first magneto-electric probe 2
Other end M connect with two input terminals of common mode choke across shielded wire harness 3, two output ends of common mode choke difference
It is connect with the incorgruous end of the end in the same direction of first winding of 5 primary side winding of isolating transformer, second winding, first layer winding
The end in the same direction of incorgruous end and second layer winding is connected, and by the 2nd RC filter circuits 7 ground connection, the secondary side of isolating transformer 5 around
Group connection peripheral control unit A D interface.Propagation of the balanced signal on harness can eliminate external radiation interference and external hair
Blackberry lily is disturbed.Common mode choke 4 can eliminate the common mode interference that generation is coupled in cable, and isolating transformer 5 not only can be further
The balanced signal in circuit can also be converted in the non-equilibrium letter that circuit system acquisition needs by eliminating the common mode interference in circuit
Number.RC filter circuits 6,7 are used for determining the high impedance reference ground of Transmission system, ensure the stability of signal.
When the forward position to fluted disc tooth is detected, the magnetic flux in iron core can increase by first magneto-electric probe；
Second magneto-electric probe can be detected the rear edge of fluted disc tooth simultaneously, and the magnetic flux in iron core can reduce；Due to two magnetic
The direction of winding of electric-type probe can induce balanced signal as shown in Figure 3, A on the contrary, according to Maxwell equations in coil
For the amplitude of balanced signal.When strong electromagnetic pulse occurs, since two magneto-electrics of differential type electromagnetic induction sensor are popped one's head in
Installation site it is closer, coil is identical with the installation direction of iron core as shown in Fig. 2, P represents the incident direction of electromagnetic wave, due to line
The winding direction of circle is on the contrary, the incident direction of electromagnetic pulse is identical, according to Maxwell equations, differential type electromagnetic induction sensor
Both ends meeting-place give birth to impulse disturbances waveform as shown in Figure 4.
Signal equally will produce radiation common mode interference, the end of this common mode interference elder generation signal during harness transmits
The rotating speed balanced signal that fluted disc generates can be converted to non-equilibrium signal as shown in figure 5, common mode interference can quilt by end, isolating transformer
Choke coil and isolating transformer inhibit.
A kind of rotating speed acquisition method of anti-nuclear electromagnetic pulse, includes the following steps：
Fluted disc rotates, and when the iron core of a magneto-electric probe is directed at fluted disc tooth, when magnetic flux increases, another magneto-electric is popped one's head in
Iron core leave fluted disc tooth, magnetic flux reduces；The direction of winding of two magneto-electrics probe is on the contrary, the tach signal of fluted disc tooth is converted
For balanced signal, balanced signal has locking phase；When nuclear electromagnetic pulse works, it converts interference signal to one group of same-phase
Common-mode signal；First RC filter circuits 6 carry out ground connection absorption to the high-frequency interferencing signal in circuit, are filtered to differential signal
Wave, and make Transmission system low frequency state with high impedance；Shielded wire harness 3 eliminates external radiation interference and external transmitting is dry
It disturbs；Common mode choke 4, isolating transformer 5 are filtered the common-mode signal in rotating speed acquisition system, the magnetic flux that common mode generates
It cancels out each other, and the balanced signal that the tach signal of fluted disc is is converted into the non-equilibrium signal of circuit system needs, it is poor
The signal that mould generates is overlapped mutually；The 2nd RC filter circuits 7 make Transmission system with high impedance.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (4)
1. a kind of rotating speed harvester of anti-nuclear electromagnetic pulse, which is characterized in that the rotating speed acquisition dress of the anti-nuclear electromagnetic pulse
It sets including differential type electromagnetic induction sensor, shielded wire harness (3), common mode choke (4), isolating transformer (5) and the first RC
Filter circuit (6) and the 2nd RC filter circuits (7), the differential type electromagnetic induction sensor include that the first magneto-electric pops one's head in (2)
It pops one's head in (8) with the second magneto-electric, the first magneto-electric probe (2) and the second magneto-electric probe (8) include coil (10), iron
The heart (11), permanent magnet (12) and supporting rack (13), iron core (11), permanent magnet (12) and supporting rack (13) are sequentially connected, iron core pair
External fluted disc, when making the forward position of first sensor probe alignment gear teeth, second sensor probe can be directed at gear
The rear edge of tooth, coil are wound on iron core, the first magneto-electric probe (2) coil and the second magneto-electric pop one's head in (8) coil it is in the same direction
End is connected, and is grounded by the first RC filter circuits (6), the other end of the coil of the first magneto-electric probe (2)
It is connect with two input terminals of common mode choke across shielded wire harness (3) with the other end of the coil of the second magneto-electric probe (8),
Two output ends of common mode choke respectively with first winding of isolating transformer (5) primary side winding it is in the same direction end, second
The incorgruous end of winding connects, and the incorgruous end of first layer winding is connected with the end in the same direction of second layer winding, and is filtered by the 2nd RC
Circuit (7) is grounded, and the vice-side winding of isolating transformer (5) connects peripheral control unit A D interface.
2. a kind of rotating speed harvester of anti-nuclear electromagnetic pulse according to claim 1, which is characterized in that gear gap and
Fluted disc tooth it is of same size.
3. a kind of rotating speed harvester of anti-nuclear electromagnetic pulse according to claim 1, which is characterized in that for different
Fluted disc, tooth form are adjusted by adjusting the position popped one's head in sensor.
4. a kind of rotating speed acquisition method of anti-nuclear electromagnetic pulse according to claim 1, which is characterized in that including walking as follows
Suddenly：Fluted disc rotates, when the iron core alignment fluted disc tooth of a magneto-electric probe, when magnetic flux increases, the iron of another magneto-electric probe
Core leaves fluted disc tooth, and magnetic flux reduces；The direction of winding of two magneto-electrics probe is on the contrary, convert the tach signal of fluted disc to balance
Signal, balanced signal have locking phase；When nuclear electromagnetic pulse works, it converts interference signal to the common mode of one group of same-phase
Signal；First RC filter circuits (6) are filtered differential signal, and make Transmission system low frequency with high impedance；Shielding line
Radiation interference outside beam (3) elimination and external transmitting interference；Common mode choke (4), isolating transformer (5) acquire rotating speed
Common-mode signal in system is filtered, and the balanced signal in system is converted into the non-equilibrium letter of circuit system needs
Number；The 2nd RC filter circuits (7) make Transmission system with high impedance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810486093.1A CN108680762B (en) | 2018-05-21 | 2018-05-21 | A kind of the revolving speed acquisition device and acquisition method of anti-nuclear electromagnetic pulse |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810486093.1A CN108680762B (en) | 2018-05-21 | 2018-05-21 | A kind of the revolving speed acquisition device and acquisition method of anti-nuclear electromagnetic pulse |
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| Publication Number | Publication Date |
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| CN108680762A true CN108680762A (en) | 2018-10-19 |
| CN108680762B CN108680762B (en) | 2019-10-11 |
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| CN201810486093.1A Active CN108680762B (en) | 2018-05-21 | 2018-05-21 | A kind of the revolving speed acquisition device and acquisition method of anti-nuclear electromagnetic pulse |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111697817A (en) * | 2020-06-18 | 2020-09-22 | 中车长春轨道客车股份有限公司 | Anti-electromagnetic interference device of motor train unit inverter |
| CN114252766A (en) * | 2020-09-22 | 2022-03-29 | 南京磁之汇电机有限公司 | Sensor and method for extracting rotation angle and rotation speed signals |
| CN115060924A (en) * | 2022-08-18 | 2022-09-16 | 四川新川航空仪器有限责任公司 | Magnetic shielding-based rotation speed sensor |
| CN115494821A (en) * | 2022-08-26 | 2022-12-20 | 南京航空航天大学 | Design method for strong electromagnetic pulse protection of engine controller circuit |
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| CN2240727Y (en) * | 1995-06-16 | 1996-11-20 | 吴小江 | Device for detecting induction type revolution meter |
| DE29706260U1 (en) * | 1996-11-07 | 1997-06-26 | Vogt Electronic Ag, 94130 Obernzell | Device for measuring the speed of a body rotating about an axis of rotation |
| JPH1183878A (en) * | 1997-09-04 | 1999-03-26 | Matsushita Electric Works Ltd | Rotational speed detecting device |
| JP2000121655A (en) * | 1998-10-15 | 2000-04-28 | Matsushita Electric Works Ltd | Rotating speed detector |
| CN107356782A (en) * | 2017-08-21 | 2017-11-17 | 优利德科技(中国)有限公司 | Utilize the device and method of electromagnetic induction device detection engine speed |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2240727Y (en) * | 1995-06-16 | 1996-11-20 | 吴小江 | Device for detecting induction type revolution meter |
| DE29706260U1 (en) * | 1996-11-07 | 1997-06-26 | Vogt Electronic Ag, 94130 Obernzell | Device for measuring the speed of a body rotating about an axis of rotation |
| JPH1183878A (en) * | 1997-09-04 | 1999-03-26 | Matsushita Electric Works Ltd | Rotational speed detecting device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111697817A (en) * | 2020-06-18 | 2020-09-22 | 中车长春轨道客车股份有限公司 | Anti-electromagnetic interference device of motor train unit inverter |
| CN111697817B (en) * | 2020-06-18 | 2023-05-12 | 中车长春轨道客车股份有限公司 | Electromagnetic interference resistant device of motor train unit inverter |
| CN114252766A (en) * | 2020-09-22 | 2022-03-29 | 南京磁之汇电机有限公司 | Sensor and method for extracting rotation angle and rotation speed signals |
| CN115060924A (en) * | 2022-08-18 | 2022-09-16 | 四川新川航空仪器有限责任公司 | Magnetic shielding-based rotation speed sensor |
| CN115494821A (en) * | 2022-08-26 | 2022-12-20 | 南京航空航天大学 | Design method for strong electromagnetic pulse protection of engine controller circuit |
| CN115494821B (en) * | 2022-08-26 | 2024-04-12 | 南京航空航天大学 | Strong electromagnetic pulse protection design method for engine controller circuit |
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| CN108680762B (en) | 2019-10-11 |
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Inventor after: Zhou Dong Inventor after: Wei Minxiang Inventor after: Cao Jie Inventor after: Xing Dexin Inventor after: Wu Shufan Inventor before: Zhou Dong Inventor before: Wei Minxiang Inventor before: Shi Lihua Inventor before: Cao Jie Inventor before: Xing Dexin Inventor before: Wu Shufan |