CN201892685U - Accelerometer - Google Patents
Accelerometer Download PDFInfo
- Publication number
- CN201892685U CN201892685U CN2010205998098U CN201020599809U CN201892685U CN 201892685 U CN201892685 U CN 201892685U CN 2010205998098 U CN2010205998098 U CN 2010205998098U CN 201020599809 U CN201020599809 U CN 201020599809U CN 201892685 U CN201892685 U CN 201892685U
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- winding
- accelerometer
- gauge outfit
- energy level
- magnet steel
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- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
The utility model relates to an accelerometer, which comprises an exciting transformer. A primary winding of the exciting transformer is connected with a square wave generator; a secondary winding of the exciting transformer is connected with a head; a displacement sensor winding of the head is connected with a preamplifier, a regulator and a power amplifier by the aid of a first capacitor; the preamplifier, the regulator and the power amplifier are connected in series sequentially; one end of a feedback winding of the head is connected into feedback current I outputted by the power amplifier; the other end of the feedback winding is grounded by the aid of a resistor and a second capacitor which are connected in parallel; and voltage UO is outputted by the resistor and the second capacitor. Besides, the head includes a short-circuit sleeve and magnetic steel with high magnetic energy grade which are arranged in magnetic fluid; spherical supports are formed at two ends of the magnetic steel with high magnetic energy grade by magnetic powder adsorbed magnetically in the magnetic fluid; and the short-circuit sleeve and the magnetic steel with high magnetic energy grade are supported in a casing by the aid of the spherical supports. The accelerometer is capable of realizing function optimization of a force generator or a displacement sensor, thereby sufficiently meeting the need of an integral machine.
Description
Technical field
The utility model relates to measuring equipment field, particularly accelerometer.
Background technology
Having many accelerometers of having a few such as high-low temperature resistant, shock resistance, anti-vibration, reliability height, life-span length, sensitivity height, is the survey instrument of petroleum drilling measuring equipment and logging equipment indispensability.At present, many producers adopt magnetic liquid suspension formula accelerometer, but the design feature of existing magnetic liquid suspension formula accelerometer can only adopt the lower permanent magnetic material of magnetic energy level of taking into account Hard Magnetic characteristic and soft magnetic characteristic, otherwise, the function optimization that is difficult to realizable force generator or displacement transducer, the result who takes into account both can't further improve the performance of forcer and displacement transducer, can not fully satisfy the needs of complete machine.
The utility model content
The purpose of this utility model provides a kind of accelerometer, but the function optimization of realizable force generator or displacement transducer fully satisfies the needs of complete machine.
A kind of accelerometer of the utility model, comprise driver transformer, the former limit winding connection side wave producer of driver transformer, the secondary winding connects gauge outfit, and the displacement transducer winding of gauge outfit is connected by prime amplifier, regulator, the power amplifier of first electric capacity with series connection successively; Feedback winding one termination of gauge outfit is gone into the feedback current I of power amplifier output
Instead, the other end is by the employing resistance and second capacity earth in parallel; Adopt the resistance and the second electric capacity output voltage U
0
Preferably, described gauge outfit comprises high magnetic energy level magnet steel and the short circuit cover that is arranged in the magnetic liquid, and high magnetic energy level magnet steel two ends are formed spherical the support by the magnetic in the adsorbed magnetic liquid of magnetic, and spherical the support is supported in high magnetic energy level magnet steel and short circuit cover among the housing.
Preferably, the periphery of high magnetic energy level magnet steel and short circuit cover is established displacement transducer winding and feedback winding respectively.
A kind of accelerometer of the utility model comprises driver transformer, the former limit winding connection side wave producer of driver transformer, and the secondary winding connects gauge outfit, and gauge outfit is connected by prime amplifier, regulator, the power amplifier of electric capacity with series connection successively; The output terminal of power amplifier is by the positive input terminal of the first resistance concatenation operation amplifier, by the sampling resistor of series connection and the negative input end of the 3rd resistance concatenation operation amplifier; The operational amplifier output terminal output voltage U
0The common port of sampling resistor and the 3rd resistance is connected with gauge outfit, is used to transmit sample rate current I
InsteadTo gauge outfit.
Preferably, the positive input terminal of described operational amplifier is by second resistance eutral grounding, and input end connects output terminal by the 4th resistance.
Preferably, described gauge outfit comprises high magnetic energy level magnet steel and the short circuit cover that is arranged in the magnetic liquid, and high magnetic energy level magnet steel two ends are formed spherical the support by the magnetic in the adsorbed magnetic liquid of magnetic, and spherical the support is supported in high magnetic energy level magnet steel and short circuit cover among the housing.
Preferably, the periphery of high magnetic energy level magnet steel and short circuit cover is respectively equipped with displacement transducer winding and feedback winding.
Compared with prior art, the utlity model has following advantage:
But the function optimization of the utility model realizable force generator or displacement transducer fully satisfies the needs of complete machine.
Description of drawings
Fig. 1 is the gauge head structure figure of accelerometer;
Fig. 2 is the utility model accelerometer first example structure figure;
Fig. 3 is the utility model accelerometer second example structure figure.
Embodiment
For above-mentioned purpose of the present utility model, feature and advantage can be become apparent more, the utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Referring to Fig. 1, the gauge head structure of accelerometer is shown, gauge outfit mainly is made up of high magnetic energy level magnet steel 1, short circuit cover 2, shell 3, displacement transducer winding 4, feedback winding 5, magnetic liquid 7, sebific duct 6 and servo loop etc.High magnetic energy level magnet steel 1 and feedback winding 5 are formed magnetoelectricity force feedback device.
High magnetic energy level magnet steel 1 and short circuit cover 2 is arranged in the magnetic liquid 7, and high magnetic energy level magnet steel 1 two ends are formed spherical the support by the magnetic in the adsorbed magnetic liquid 7 of magnetic, and spherical the support is supported in movable part high magnetic energy level magnet steel 1 and short circuit cover 2 among the housing 3.Because spherical the support is that magnetic liquid 7 constitutes, its friction is very little, is a desirable supporting way.
The periphery of high magnetic energy level magnet steel 1 and short circuit cover 2 is respectively equipped with displacement transducer winding 4 and feedback winding 5.
The utility model adopts sebific duct to absorb the volume change of expanding with heat and contract with cold because of the caused magnetic liquid of temperature variation, has also constituted the loop of magnetic liquid, substitutes existing circular wave sheet with sebific duct, simplifies the structure.The utility model displacement transducer 4 breaks away from the method for permanent magnetic material magnetoconductivity fully, at the high short circuit cover 2 of the suitable conductance of high magnetic energy level magnet steel 1 outer cover one deck, this has played the effect of short-circuited conducting sleeve to the sensor winding of setting up, this method is also little to the change of original structure, but effect is fine.
The utility model has solved the technical bottleneck of magnetic liquid suspension accelerometer, this short-circuited conducting sleeve displacement transducer substitutes after the displacement transducer that original magnetoconductivity is the basis, the function of high magnetic energy level magnet steel 1 is only limited to the single effect of setting up permanent magnetic field in forcer, equally can select the trade mark of magnet steel from the angle that helps the forcer characteristic with the accelerometer of other type.
Referring to Fig. 2, the utility model accelerometer first example structure is shown, comprise driver transformer T1, the former limit winding connection side wave producer U1 of driver transformer T1, the secondary winding connects gauge outfit U2, and gauge outfit U2 is connected by prime amplifier U3, regulator U4, the power amplifier U5 of capacitor C 1 with series connection successively.The output terminal of power amplifier U5 is by the positive input terminal of resistance R 1 concatenation operation amplifier U6, by the resistance R s of series connection and the negative input end of resistance R 3 concatenation operation amplifier U6; The positive input terminal of operational amplifier U6 is by resistance R 2 ground connection, and input end connects output terminal, output terminal output voltage U by resistance R 4
0
The common port of resistance R S and resistance R 3 is connected with gauge outfit U2, is used for sampled signal I
Instead
When acceleration appears in gauge outfit input shaft direction, high magnetic energy level magnet steel 1 and short circuit cover 2 produce displacement, this moment, displacement transducer winding 4 inductance subtracted because of the displacement one of short circuit cover 2 increases one, the electric bridge of being made up of driver transformer T1 secondary winding and displacement transducer winding 4 occurs uneven, bridge output voltage is corresponding to the size and Orientation of displacement, bridge output voltage is through the preposition amplification of the prime amplifier U3 of servo loop, after regulator U4 phase demodulation, power amplifier U5 amplify, to the corresponding feedback current I of feedback winding 5 inputs
Instead, feedback current I
InsteadMagnetic field that produces and 1 effect of high magnetic energy level magnet steel produce magnetoelectricity power, and the inertial force that this magnetoelectricity power and input acceleration are produced balances each other, at this moment feedback current I
InsteadBe directly proportional with input acceleration, finished the mission that acceleration is transformed into electric current, feedback current I
InsteadThe sampling resistor Rs that flows through can obtain voltage U
0Output.
But the function optimization of the utility model realizable force generator or displacement transducer fully satisfies the needs of complete machine.
As can be seen from Figure 2, displacement transducer winding 4 output terminals of gauge outfit (A point) are gone up and are inserted feedback current I
Instead, so sampling resistor also becomes the load of displacement transducer winding 4, directly affects the characteristic of displacement transducer winding 4; In addition with feedback current I
InsteadConvert voltage U to
0The time, in order to eliminate the influence of winding temperature coefficient, must add temperature-compensation circuit.
Referring to Fig. 3, the utility model accelerometer second example structure is shown, comprise driver transformer T1, the former limit winding connection side wave producer U1 of driver transformer T1, the secondary winding connects gauge outfit U2, and the displacement transducer winding 4 of gauge outfit U2 is connected by prime amplifier U3, regulator U4, the power amplifier U5 of capacitor C 1 with series connection successively; Feedback winding 5 one terminations of gauge outfit U2 are gone into the feedback current I of power amplifier U5 output
Instead, the other end is by parallel resistor Rs and capacitor C 2 ground connection; Resistance R s and capacitor C 2 output voltage U
0
Two windings that gauge outfit U2 separates and corresponding short circuit overlap 2 and high magnetic energy level magnet steel 1 distinguish the function of completion bit displacement sensor and forcer.This formation can drop on the end of resistance R s on the signal ground, does not need temperature-compensation circuit, also can without restriction capacitor C 2 be connected in parallel on the Rs, and this helps to improve the dynamic perfromance of accelerometer.Displacement transducer winding 4 output terminals only meet prime amplifier U3, and its load is lighter, have reduced magnetic interference power.
In a word, above technical method, on principle, structure forms and to have broken traditional theory, broken through long-term unsolved key problem in technology, further developing and applying and laid firm foundations for the magnetic liquid suspension accelerometer.
The above only is a preferred implementation of the present utility model, does not constitute the qualification to the utility model protection domain.Any any modification of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the claim protection domain of the present utility model.
Claims (7)
1. accelerometer, it is characterized in that, comprise driver transformer, the former limit winding connection side wave producer of driver transformer, the secondary winding connects gauge outfit, and the displacement transducer winding of gauge outfit is connected by prime amplifier, regulator, the power amplifier of first electric capacity with series connection successively;
Feedback winding one termination of gauge outfit is gone into the feedback current I of power amplifier output
Instead, the other end is by the employing resistance and second capacity earth in parallel; Adopt the resistance and the second electric capacity output voltage U
0
2. accelerometer as claimed in claim 1, it is characterized in that, described gauge outfit comprises high magnetic energy level magnet steel and the short circuit cover that is arranged in the magnetic liquid, high magnetic energy level magnet steel two ends are formed spherical the support by the magnetic in the adsorbed magnetic liquid of magnetic, and spherical the support is supported in high magnetic energy level magnet steel and short circuit cover among the housing.
3. accelerometer as claimed in claim 2 is characterized in that, the periphery of high magnetic energy level magnet steel and short circuit cover is established displacement transducer winding and feedback winding respectively.
4. an accelerometer is characterized in that, comprises driver transformer, the former limit winding connection side wave producer of driver transformer, and the secondary winding connects gauge outfit, and gauge outfit is connected by prime amplifier, regulator, the power amplifier of electric capacity with series connection successively;
The output terminal of power amplifier is by the positive input terminal of the first resistance concatenation operation amplifier, by the sampling resistor of series connection and the negative input end of the 3rd resistance concatenation operation amplifier; The operational amplifier output terminal output voltage U
0, the common port of sampling resistor and the 3rd resistance is connected with gauge outfit, is used to transmit sample rate current I
InsteadTo gauge outfit.
5. accelerometer as claimed in claim 4 is characterized in that, the positive input terminal of described operational amplifier is by second resistance eutral grounding, and input end connects output terminal by the 4th resistance.
6. accelerometer as claimed in claim 4, it is characterized in that, described gauge outfit comprises high magnetic energy level magnet steel and the short circuit cover that is arranged in the magnetic liquid, high magnetic energy level magnet steel two ends are formed spherical the support by the magnetic in the adsorbed magnetic liquid of magnetic, and spherical the support is supported in high magnetic energy level magnet steel and short circuit cover among the housing.
7. accelerometer as claimed in claim 6 is characterized in that, the periphery of high magnetic energy level magnet steel and short circuit cover is respectively equipped with displacement transducer winding and feedback winding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205998098U CN201892685U (en) | 2010-11-10 | 2010-11-10 | Accelerometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205998098U CN201892685U (en) | 2010-11-10 | 2010-11-10 | Accelerometer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201892685U true CN201892685U (en) | 2011-07-06 |
Family
ID=44222157
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205998098U Expired - Lifetime CN201892685U (en) | 2010-11-10 | 2010-11-10 | Accelerometer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201892685U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102466735A (en) * | 2010-11-10 | 2012-05-23 | 北京中联博韬科技咨询有限公司 | Accelerometer |
| CN105866457A (en) * | 2016-05-06 | 2016-08-17 | 武汉航空仪表有限责任公司 | Accelerometer circuit |
-
2010
- 2010-11-10 CN CN2010205998098U patent/CN201892685U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102466735A (en) * | 2010-11-10 | 2012-05-23 | 北京中联博韬科技咨询有限公司 | Accelerometer |
| CN102466735B (en) * | 2010-11-10 | 2013-09-18 | 北京中联博韬科技咨询有限公司 | Accelerometer |
| CN105866457A (en) * | 2016-05-06 | 2016-08-17 | 武汉航空仪表有限责任公司 | Accelerometer circuit |
| CN105866457B (en) * | 2016-05-06 | 2018-11-06 | 武汉航空仪表有限责任公司 | A kind of accelerometer circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110706 Effective date of abandoning: 20130918 |
|
| RGAV | Abandon patent right to avoid regrant |