CN2835963Y - Closed loop pole compensation type speed vibration pickup - Google Patents
Closed loop pole compensation type speed vibration pickup Download PDFInfo
- Publication number
- CN2835963Y CN2835963Y CN 200520021855 CN200520021855U CN2835963Y CN 2835963 Y CN2835963 Y CN 2835963Y CN 200520021855 CN200520021855 CN 200520021855 CN 200520021855 U CN200520021855 U CN 200520021855U CN 2835963 Y CN2835963 Y CN 2835963Y
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- CN
- China
- Prior art keywords
- operational amplifier
- resistance
- closed
- vibro
- integrator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The utility model relates to a closed loop pole compensation type speed vibration pickup. Signals which are output by a geophone in a casing are sent to three parametric generators, wherein each of the parametric generators is composed of a regulator, an integrator 1, an integrator 2, a phase inverter, a feedback resistor RV and a feedback resistor Rd; signals of ea, ev and ed which are output by the three parametric generators are respectively sent to an operational amplifier A4; a first path of the output signals is connected with the input end of A4 of the operational amplifier of an adder by the output signals ea of the output end of the regulator through an input resistor Rj of the adder; a second path of the output signals is connected with the input end of A4 of the operational amplifier of the adder by the output signals ev of the output end of the integrator 1 through an input resistor Rs of the adder after phase inversion is carried out on the second path of the output signals by the phase inverter. The first path of the output signals is connected with the input end of A4 of the operational amplifier of the adder by the output signals ed of the integrator 2 through an input resistor Rw of the adder. The utility model has the advantages of simple structure, reasonable design, ultra low frequencies, wide frequency band, high sensitivity and low cost.
Description
Technical field
The utility model relates to a kind of vibration measurement device, and it provides a kind of ultralow frequency broadband vibro-pickup for the fault diagnosis and the common engineering vibration survey of large-scale mechanical vibration.
Background technology
At present, the common engineering vibration measuring instrument has 891 type vialogs, 941B type ultralow frequency vialog and piezoelectric type acceleration meter etc., 891 types and its principle of 941B type vialog have adopted the passive servo technology to strengthen equivalent quality, expand low frequency characteristic and measured range, the low frequency and the ultralow frequency that are particularly suitable for the building hydraulic engineering are measured, but it is low that its shortcoming is a upper limiting frequency, 100Hz only, and vibro-pickup can not be vertically, level is dual-purpose, can not satisfy the fault diagnosis and the vibration survey of big machineries such as steam turbine simultaneously.The low frequency characteristic of piezoelectric accelerometer is relatively poor, and is subject to the influence of temperature and long lead.
Summary of the invention
The purpose of this utility model is to overcome the weak point that exists in the above-mentioned technology, and ultralow frequency broadband vibro-pickup a kind of simple in structure, reasonable in design, novel is provided.
In order to achieve the above object, the technical solution adopted in the utility model is: the seismoreceiver output signal in the housing is delivered to by regulator, integrator 1, integrator 2, phase inverter, feedback resistance R
V, feedback resistance R
dForming has the tri-consult volume generator, three output signal e of tri-consult volume generator output
a, e
v, e
dDeliver to operational amplifier A respectively
4, the output terminal output signal e of output signal one route demodulator
aInput resistance R through totalizer
jA with the operational amplifier of totalizer
4Input end joins, the output terminal output signal e of output signal two route integrators 1
vThrough the phase inverter paraphase after the input resistance R of totalizer
sA with the operational amplifier of totalizer
4Input end joins, the output terminal output signal e of output signal one route integrator 2
dInput resistance R through totalizer
wA with the operational amplifier of totalizer
4Input end joins.
The utility model has the advantages that:
Simple in structure, reasonable in design, ultralow frequency, broadband, high sensitivity, with low cost.
Description of drawings
Fig. 1 is the utility model block scheme;
Fig. 2 is the utility model circuit theory diagrams.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail.
By Fig. 1-Fig. 2 as can be known, the utility model is that the interior seismoreceiver output signal of housing is delivered to by regulator, integrator 1, integrator 2, phase inverter, feedback resistance R
V, feedback resistance R
dForming has the tri-consult volume generator, three output signal e of tri-consult volume generator output
a, e
v, e
dDeliver to operational amplifier A respectively
4, the output terminal output signal e of output signal one route demodulator
aInput resistance R through totalizer
1A with the operational amplifier of totalizer
4Input end joins, the output terminal output signal e of output signal two route integrators 1
vThrough the phase inverter paraphase after the input resistance R of totalizer
sA with the operational amplifier of totalizer
4Input end joins, the output terminal output signal e of output signal one route integrator 2
dInput resistance R through totalizer
wA with the operational amplifier of totalizer
4Input end joins.
Regulator is by resistance R
1, R
2, R
A1And operational amplifier A
1Form.
Integrator 1 is by resistance R
3, R
A2, capacitor C
1And operational amplifier A
2Form.
Integrator 2 is by resistance R
4, R
A3, capacitor C
2And operational amplifier A
3Form.
Phase inverter is by resistance R
6, R
A5, R
7And operational amplifier A
5Form.
Totalizer is by resistance R
w, R
j, R
s, R
5, R
A4And operational amplifier A
4Form.
Low-pass filter is by resistance R
8, R
9, R
A5, capacitor C
4And operational amplifier A
6Form.
Operational amplifier A in the integration 1
2Output through phase inverter and feedback resistance R
VWith the operational amplifier A in the regulator
1End of oppisite phase link to each other to constitute the damping closed loop.
Operational amplifier A in the integration 2
3Output through feedback resistance R
dWith the operational amplifier A in the regulator
1End of oppisite phase link to each other to constitute the frequency closed loop.
With reference to Fig. 2 closed-cycle pole compensation formula speed vibro-pickup frame principle figure.
The seismoreceiver output signal is delivered to by regulator, integrator 1, integrator 2, phase inverter, feedback resistance R
V, feedback resistance R
dThe tri-consult volume generator of forming, three output signal e of tri-consult volume
a, e
v, e
dDeliver to totalizer, the output of totalizer is through C
3Deliver to low-pass filter.
With reference to Fig. 2 closed-cycle pole compensation formula speed vibro-pickup frame principle figure and Fig. 3 closed-cycle pole compensation formula speed vibro-pickup circuit theory diagrams, regulator is by resistance R
1, R
2, R
A1And operational amplifier A
1Form; Integrator 1 is by resistance R
3, R
A2, capacitor C
1, and operational amplifier A
2Form; Integrator 2 is by resistance R
4, R
A3Capacitor C
2, and operational amplifier A
3Form; Phase inverter is by resistance R
6, R
A5, R
7, and operational amplifier A
5Form; Totalizer is by resistance R
w, R
j, R
s, R
5, R
A4And operational amplifier A
4Form; R
dBe the input end that feeds back to regulator from the output terminal of integrator 2, be used to change the natural frequency of vibration of closed-cycle pole compensation formula vibro-pickup; R
vBe the input end that feeds back to regulator from output terminal, be used to change the damping ratio of closed-cycle pole compensation formula vibro-pickup through phase inverter; Low-pass filter is by resistance R
8, R
9, R
A5, capacitor C
3, C
4And operational amplifier A
6Form, the low-pass filter of different frequency bands can be set as required.
Claims (9)
1. closed-cycle pole compensation formula speed vibro-pickup, it is made up of housing, seismoreceiver, closed-cycle pole compensation circuit, by-pass cock and output plug etc., it is characterized in that: the seismoreceiver output signal in the housing is delivered to by regulator, integrator 1, integrator 2, phase inverter, feedback resistance R
V, feedback resistance R
dForming has the tri-consult volume generator, three output signal e of tri-consult volume generator output
a, e
v, e
dDeliver to operational amplifier A respectively
4, the output terminal output signal e of output signal one route demodulator
aInput resistance R through totalizer
jA with the operational amplifier of totalizer
4Input end joins, the output terminal output signal e of output signal two route integrators 1
vThrough the phase inverter paraphase after the input resistance R of totalizer
sA with the operational amplifier of totalizer
4Input end joins, the output terminal output signal e of output signal one route integrator 2
dInput resistance R through totalizer
wA with the operational amplifier of totalizer
4Input end joins.
2. closed-cycle pole compensation formula speed vibro-pickup according to claim 1, it is characterized in that: described regulator is by resistance R
1, R
2, R
A1And operational amplifier A
1Form.
3. closed-cycle pole compensation formula speed vibro-pickup according to claim 1, it is characterized in that: described integrator 1 is by resistance R
3, R
A2, capacitor C
1And operational amplifier A
2Form.
4. closed-cycle pole compensation formula speed vibro-pickup according to claim 1, it is characterized in that: described integrator 2 is by resistance R
4, R
A3, capacitor C
2And operational amplifier A
3Form.
5. closed-cycle pole compensation formula speed vibro-pickup according to claim 1, it is characterized in that: described phase inverter is by resistance R
6, R
A5, R
7And operational amplifier A
5Form.
6. closed-cycle pole compensation formula speed vibro-pickup according to claim 1, it is characterized in that: described totalizer is by resistance R
w, R
j, R
s, R
5, R
A4And operational amplifier A
4Form.
7. closed-cycle pole compensation formula speed vibro-pickup according to claim 1, it is characterized in that: described low-pass filter is by resistance R
8, R
9, R
A5, capacitor C
4And operational amplifier A
6Form.
8. according to claim 1 or 3 described closed-cycle pole compensation formula speed vibro-pickups, it is characterized in that: the operational amplifier A in the integration 1
2Output through phase inverter and feedback resistance R
VWith the operational amplifier A in the regulator
1End of oppisite phase link to each other to constitute the damping closed loop.
9. according to claim 1 or 4 described closed-cycle pole compensation formula speed vibro-pickups, it is characterized in that: the operational amplifier A in the integration 2
3Output through feedback resistance R
dWith the operational amplifier A in the regulator
1End of oppisite phase link to each other to constitute the frequency closed loop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520021855 CN2835963Y (en) | 2005-10-31 | 2005-10-31 | Closed loop pole compensation type speed vibration pickup |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520021855 CN2835963Y (en) | 2005-10-31 | 2005-10-31 | Closed loop pole compensation type speed vibration pickup |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2835963Y true CN2835963Y (en) | 2006-11-08 |
Family
ID=37300616
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520021855 Expired - Fee Related CN2835963Y (en) | 2005-10-31 | 2005-10-31 | Closed loop pole compensation type speed vibration pickup |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2835963Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106706007A (en) * | 2017-03-14 | 2017-05-24 | 匙庆磊 | Device for adjusting damping ratio of sensor |
-
2005
- 2005-10-31 CN CN 200520021855 patent/CN2835963Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106706007A (en) * | 2017-03-14 | 2017-05-24 | 匙庆磊 | Device for adjusting damping ratio of sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20061108 Termination date: 20111031 |