CN102854333A - Hot-redundant magnetic-electric rotational-speed sensor - Google Patents
Hot-redundant magnetic-electric rotational-speed sensor Download PDFInfo
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- CN102854333A CN102854333A CN2012103451193A CN201210345119A CN102854333A CN 102854333 A CN102854333 A CN 102854333A CN 2012103451193 A CN2012103451193 A CN 2012103451193A CN 201210345119 A CN201210345119 A CN 201210345119A CN 102854333 A CN102854333 A CN 102854333A
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Abstract
The invention belongs to the field of testing control devices, and particularly relates to a magnetic-electric rotational-speed sensor capable of realizing hot-redundancy of devices. The magnetic-electric rotational-speed sensor comprises a permanent magnet, a first independent induction coil, a second independent induction coil, a signal processing circuit and a sensor shell. The first independent induction coil and the second independent induction coil are wound on the permanent magnet and fix the permanent magnet into the sensor shell, the axis of the permanent magnet is coincided with the central axis of the sensor shell, the two independent induction coils are respectively connected with the signal processing circuit, holes are arranged in centers of two ends of the sensor shell, the end of the sensor shell close to the signal processing circuit is used for leading out a conducting wire, and the other end of the sensor shell is used for receiving detection signals. The magnetic-electric rotational-speed sensor can work normally assuredly even if the optional coil fails, reliability of the magnetic-electric rotational-speed sensor is greatly improved, and reliability of measured objects such as diesel engines, gasoline engines and gas turbines is also improved.
Description
Technical field
The invention belongs to test controller spare field, be specifically related to a kind of redundant magnetoelectric tachometric transducer of device heat of having realized.
Background technology
In order to pass through day by day severe Abgasgesetz, at present general employing of diesel engine for automobile and gasoline engine the smart electronics control technology, also towards smart electronics control technology future development, the realization of this electron controls technology all is based on accurate collection and the transmission of various sensor signals with power on the naval vessel.Sensor signal be collected eyes and ear than electric-control system, the reliability of sensor has just determined the reliability of electric-control system.Magnetoelectric tachometric transducer is to use electromagnetic induction principle, the variation of magnetic flux is converted to the sensor of induced potential output.Magnetoelectric tachometric transducer is one type the most common in the speed probe, it with respect to the speed probe of other types have simple in structure, output power large, stable performance, and has the advantage of certain bandwidth of operation.But for adopting electronically controlled power system, very strong for the reliability requirement of sensor, the malfunctioning of sensor can cause the economy of power system and the decline of emission performance, the serious flame-out or damage that can cause power system.Especially for the naval vessel power system, in case power system breaks down, detect so and maintenance meeting inconvenience very.As long as sensor breaks down, even if damaging, power system do not need power system parking maintenance for traditional sensors yet.If the fault of sensor causes the flame-out or damage of power system, the reliability and security on naval vessel also can reduce greatly so.So on the basis of existing sensor, how to improve the reliability of sensor, reduce unnecessary trouble, reduce the major issue that potential safety hazard becomes needs solution.
Summary of the invention
The object of the present invention is to provide a kind of hot redundant magnetoelectric tachometric transducer that improves functional reliability.
The object of the present invention is achieved like this:
The redundant magnetoelectric tachometric transducer of heat, comprise a permanent magnet, the first independent induction coil, the second independent induction coil, signal processing circuit and sensor housing, the first independent induction coil and the second independent induction coil are wrapped on the permanent magnet and with permanent magnet and are fixed in the sensor housing, make the central axes of axis and the sensor housing of permanent magnet, two groups of independent induction coil are connected with signal processing circuit respectively, the center at sensor housing two ends all has the hole, end near signal processing circuit is used for deriving wire, and the other end is used for receiving detectable signal.
After the signal filtering shaping that signal processing circuit is obtained inductive coil through or door output.
The redundant magnetoelectric tachometric transducer of heat is used for the measure speed gears of detecting engine, and sensor is placed on measure speed gears radially, and the side that sensor housing has the hole that receives detectable signal leaves the gap over against the gear outer and with gear.
Sensor housing is cylindrical.
Signal processing circuit, comprise that two structures are identical, separate circuit unit, each circuit unit comprises, one end of the first resistance links to each other with independent induction coil, the other end respectively with the second resistance, electric capacity, the negative pole of the first diode, the positive pole of the second diode links to each other, the other end of electric capacity, the positive pole of the first diode, the negative pole of the second diode and the input end of amplifier connect ground, the other end of the second resistance, the input end of amplifier links to each other with the 3rd resistance respectively, the other end of the 3rd resistance, the output terminal of amplifier, the 4th resistance links to each other with the input end of Schmidt trigger respectively, and the other end of the 4th resistance is connected with amplifier and is connected the 5v power supply; The output terminal of the Schmidt trigger of the first circuit unit with or the door first input end link to each other, the output terminal of the Schmidt trigger of second circuit unit with or the second input end link to each other.
Beneficial effect of the present invention is:
Than traditional magnetoelectric tachometric transducer, the redundant magnetoelectric tachometric transducer of heat has increased by one group of independently inductive coil and signal processing circuit, so just realized the Hot Spare of magnetoelectric tachometric transducer, when breaking down, any one group of coil can guarantee normal operation of sensor, improved greatly the reliability of magnetoelectric tachometric transducer, so also improved simultaneously measured object such as diesel engine, the reliability of gasoline engine, gas turbine etc.
Description of drawings
Fig. 1 is the structural drawing of hot redundance type magnetic power rotation speed sensor;
Fig. 2 is the work synoptic diagram of hot redundance type magnetic power rotation speed sensor;
Fig. 3 is redundant rotating speed collection and treatment circuit figure;
Fig. 4 is two groups of coil normal operation logic relation pictures;
Fig. 5 is one group of logic relation picture that coil opens circuit;
Fig. 6 is the logic relation picture that all coils opens circuit.
Embodiment
The below provides preferred implementation of the present invention, and is illustrated by reference to the accompanying drawings.
It mainly consists of the following components: permanent magnet (among Fig. 1 1), two groups of inductive coils (among Fig. 12 and 3) independently, signal processing circuit (among Fig. 1 4), sensor housing (among Fig. 1 5).It is characterised in that: when rotate (8) among (6) drive measure speed gears Fig. 2 among tested rotating shaft Fig. 2, (7) can produce periodic the variation among gap Fig. 2 between measure speed gears and the sensor, thereby cause producing periodic the variation by the magnetic flux of two groups of absolute coils, so just producing periodic change in voltage in coil, this Changing Pattern is similar to sine wave.Because the sensor of this redundance type has two groups of independently inductive coils, these two groups of identical inductive coils are wrapped on the permanent magnet with same canoe, because the voltage of output is only relevant with gap, coil turn, magnetic flux, the rotating speed of measure speed gears and sensor, so these two groups of identical inductive coils can obtain all identical input signals of two phase places, amplitude.These two groups of induced signals are input in the signal processing circuit, and as shown in Figure 2, this programme is that signal processing circuit is installed in the sensor, also signal processing circuit can be installed in the outside as required.Resistance R 3, R4, R5, R12 series connection in the signal section for the treatment of S IN1 in the signal processing circuit as shown in Figure 3, U3B and U1A series connection, C53, D3, D5 parallel connection are then at square-wave signal of U1A output.Resistance R 7, R8, R9, R13 connect in the signal section for the treatment of S IN2, U3A and U1B series connection, and C54, D4, D6 parallel connection, then at square-wave signal of U1B output, the square-wave signal of this signal and U1A output passes through or door U2A exports.The effect of R3 and C53 is to filter high frequency noise in the signal processing circuit of Fig. 3, and R7 and C54 have same purpose; The effect of D3 and D5 is the voltage that restriction enters amplifier (U3B) two ends, holding circuit, and D4 and D6 have same purpose; The effect of U3B and U3A is amplifying signal; The effect of U1A and U1B is to remove burr signal and hump interference, output square-wave signal; U2A is or door, even if effect is to guarantee to have in two groups of signals one group to break down and can guarantee that also signal is normal, only has two groups of signals all to break down and just can cause output signal to be low level always.Like this if two groups independently inductive coil have one group tachometer signal normal, sensor just can work.Independently inductive coil and signal processing circuit just can realize that the heat of magnetoelectric tachometric transducer is redundant by two groups.
As shown in Figure 2, speed probe is fixed, at the sensor tail end output port is arranged.Guarantee the assemblage gap (7) between speed probe and the measure speed gears, along with the increase in this gap, the output sensitivity of sensor reduces rapidly.And in the situation in large gap, sensor output voltage disturbs larger, therefore, is guaranteeing that under the normal prerequisite of using, assemblage gap (7) should be little because of possibility.After the installation, with independent induction coil 1(2) be wrapped on the first half of permanent magnet (1), then with identical canoe independent induction coil 2(3) be wrapped on the latter half of permanent magnet (1).Independent induction coil 1(2) with independent induction coil 2(3) near the joint of measure speed gears one end respectively with Fig. 3 signal processing circuit in SIN1 link to each other with SIN2, the other end is distinguished ground connection.
Vcc is the high level of 12V among Fig. 3, and AGND represents ground connection.SIN1 and SIN2 are respectively independent induction coil 1(2 among Fig. 1 among Fig. 2) with independent induction coil 2(3) induced electromotive force signal that produces.These two groups independently signal SIN1 and SIN2 remove high frequency noise, removal burr signal and hump interference through after the rotating speed collection and treatment circuit such as Fig. 2, obtain two groups of identical square-wave signals behind the shaping filter.This two prescriptions ripple signal at last by among Fig. 2 or the door (U2A) obtain at last the SOUT output signal.
As shown in Figure 3, in the speed probe two groups independently inductive coil to obtain be the sine wave signal that is similar among Fig. 3 1., through entering or door (U2A) front square-wave signal that obtains shown in 2. behind the filter shape, then signal 2. pass through or door (U2A) after obtain output signal as 3..Such as Fig. 4 when there being one group to break down and do not have signal when input not affect the output signal that obtains 3. in two groups of signals, only such as Fig. 5 the time, two groups of signals all break down and just can not make 3. always output low level when having the signal input, and namely this sensor breaks down.
Claims (5)
1. redundant magnetoelectric tachometric transducer of heat, it is characterized in that: comprise a permanent magnet, the first independent induction coil, the second independent induction coil, signal processing circuit and sensor housing, the first independent induction coil and the second independent induction coil are wrapped on the permanent magnet and with permanent magnet and are fixed in the sensor housing, make the central axes of axis and the sensor housing of permanent magnet, two groups of independent induction coil are connected with signal processing circuit respectively, the center at sensor housing two ends all has the hole, end near signal processing circuit is used for deriving wire, and the other end is used for receiving detectable signal.
2. the redundant magnetoelectric tachometric transducer of a kind of heat according to claim 1 is characterized in that: after the signal filtering shaping that described signal processing circuit is obtained inductive coil through or door output.
3. the redundant magnetoelectric tachometric transducer of a kind of heat according to claim 1 and 2, it is characterized in that: the redundant magnetoelectric tachometric transducer of described heat is used for the measure speed gears of detecting engine, sensor is placed on measure speed gears radially, and the side that sensor housing has the hole that receives detectable signal leaves the gap over against the gear outer and with gear.
4. the redundant magnetoelectric tachometric transducer of a kind of heat according to claim 1 and 2, it is characterized in that: described sensor housing is cylindrical.
5. the redundant magnetoelectric tachometric transducer of a kind of heat according to claim 1 and 2, it is characterized in that: described signal processing circuit, comprise that two structures are identical, separate circuit unit, each circuit unit comprises, one end of the first resistance links to each other with independent induction coil, the other end respectively with the second resistance, electric capacity, the negative pole of the first diode, the positive pole of the second diode links to each other, the other end of electric capacity, the positive pole of the first diode, the negative pole of the second diode and the input end of amplifier connect ground, the other end of the second resistance, the input end of amplifier links to each other with the 3rd resistance respectively, the other end of the 3rd resistance, the output terminal of amplifier, the 4th resistance links to each other with the input end of Schmidt trigger respectively, and the other end of the 4th resistance is connected with amplifier and is connected the 5v power supply; The output terminal of the Schmidt trigger of the first circuit unit with or the door first input end link to each other, the output terminal of the Schmidt trigger of second circuit unit with or the second input end link to each other.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012103451193A CN102854333A (en) | 2012-09-18 | 2012-09-18 | Hot-redundant magnetic-electric rotational-speed sensor |
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| CN2012103451193A CN102854333A (en) | 2012-09-18 | 2012-09-18 | Hot-redundant magnetic-electric rotational-speed sensor |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105424966A (en) * | 2015-12-11 | 2016-03-23 | 中国航空工业集团公司西安航空计算技术研究所 | Engine rotating speed measurement circuit and method |
| CN109870589A (en) * | 2019-04-04 | 2019-06-11 | 哈尔滨恒达交通设备技术开发有限公司 | A kind of velocity sensor |
| CN112392920A (en) * | 2020-11-20 | 2021-02-23 | 陕西法士特汽车传动集团有限责任公司 | 8-gear automatic transmission |
| CN112444643A (en) * | 2020-11-12 | 2021-03-05 | 中国航空工业集团公司上海航空测控技术研究所 | Novel rotor speed magnetic sensor |
| CN113309618A (en) * | 2021-06-30 | 2021-08-27 | 中国航发动力股份有限公司 | Troubleshooting method for low-pressure rotating speed signal fluctuation of gas turbine |
| CN114660322A (en) * | 2022-03-18 | 2022-06-24 | 陕西工业职业技术学院 | Instantaneous rotating speed fluctuation monitoring device of hydraulic system and fluctuation information acquisition method |
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| CN2864680Y (en) * | 2005-12-02 | 2007-01-31 | 包头稀土研究院 | Iron-matrix block amorphous rotation speed sensor |
| CN201242550Y (en) * | 2008-08-01 | 2009-05-20 | 刘柏榆 | Electromagnetic type automobile wheel speed sensor |
| CN202182903U (en) * | 2011-08-13 | 2012-04-04 | 江阴林格科技有限公司 | Novel speed sensor |
| CN102645548A (en) * | 2012-05-12 | 2012-08-22 | 中国兵器工业集团第七0研究所 | Magnetoelectricity revolution speed transducer |
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2012
- 2012-09-18 CN CN2012103451193A patent/CN102854333A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2864680Y (en) * | 2005-12-02 | 2007-01-31 | 包头稀土研究院 | Iron-matrix block amorphous rotation speed sensor |
| CN201242550Y (en) * | 2008-08-01 | 2009-05-20 | 刘柏榆 | Electromagnetic type automobile wheel speed sensor |
| CN202182903U (en) * | 2011-08-13 | 2012-04-04 | 江阴林格科技有限公司 | Novel speed sensor |
| CN102645548A (en) * | 2012-05-12 | 2012-08-22 | 中国兵器工业集团第七0研究所 | Magnetoelectricity revolution speed transducer |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105424966A (en) * | 2015-12-11 | 2016-03-23 | 中国航空工业集团公司西安航空计算技术研究所 | Engine rotating speed measurement circuit and method |
| CN109870589A (en) * | 2019-04-04 | 2019-06-11 | 哈尔滨恒达交通设备技术开发有限公司 | A kind of velocity sensor |
| CN112444643A (en) * | 2020-11-12 | 2021-03-05 | 中国航空工业集团公司上海航空测控技术研究所 | Novel rotor speed magnetic sensor |
| CN112392920A (en) * | 2020-11-20 | 2021-02-23 | 陕西法士特汽车传动集团有限责任公司 | 8-gear automatic transmission |
| CN112392920B (en) * | 2020-11-20 | 2022-04-15 | 陕西法士特汽车传动集团有限责任公司 | 8-gear automatic transmission |
| CN113309618A (en) * | 2021-06-30 | 2021-08-27 | 中国航发动力股份有限公司 | Troubleshooting method for low-pressure rotating speed signal fluctuation of gas turbine |
| CN114660322A (en) * | 2022-03-18 | 2022-06-24 | 陕西工业职业技术学院 | Instantaneous rotating speed fluctuation monitoring device of hydraulic system and fluctuation information acquisition method |
| CN114660322B (en) * | 2022-03-18 | 2023-07-04 | 陕西工业职业技术学院 | Instantaneous rotation speed fluctuation monitoring device of hydraulic system and fluctuation information acquisition method |
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Application publication date: 20130102 |