CN209055214U - A vibration velocity sensor circuit - Google Patents
A vibration velocity sensor circuit Download PDFInfo
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- CN209055214U CN209055214U CN201821878735.4U CN201821878735U CN209055214U CN 209055214 U CN209055214 U CN 209055214U CN 201821878735 U CN201821878735 U CN 201821878735U CN 209055214 U CN209055214 U CN 209055214U
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- circuit
- operational amplifier
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- pole
- input terminal
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- 230000003321 amplification Effects 0.000 claims abstract description 14
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 14
- 230000001133 acceleration Effects 0.000 claims abstract description 6
- 239000003990 capacitor Substances 0.000 claims description 23
- 230000009466 transformation Effects 0.000 claims description 15
- 230000005669 field effect Effects 0.000 claims description 10
- 230000005611 electricity Effects 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims 1
- 238000006243 chemical reaction Methods 0.000 abstract description 4
- 238000006073 displacement reaction Methods 0.000 abstract description 2
- 230000001131 transforming effect Effects 0.000 abstract 5
- 239000013078 crystal Substances 0.000 description 2
- 238000003745 diagnosis Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
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- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
本实用新型公开了一种振动速度传感器电路，包括顺序连接的电荷放大调整电路、积分变换电路和阻抗变换电路；所述电荷放大调整电路是由运算放大器构成的电荷电压转换电路；所述积分变换电路是由运算放大器构成的精密硬件积分电路；所述阻抗变换电路是一种将实际负载阻抗变换为前级网络所要求的最佳负载阻抗的电路。所述电荷放大调整电路的输出端与所述积分变换电路的输入端相连接，所述积分变换电路的输出端与所述的阻抗变换电路的输入端相连接。本实用新型改进了常规振动传感器只能测量加速度的现状，提供了一种可用于测量振动速度的压电式传感器电路，适合压电式振动速度传感器、压电式振动位移传感器等多种类型的振动传感器。
The utility model discloses a vibration velocity sensor circuit, which comprises a charge amplifying and adjusting circuit, an integral transforming circuit and an impedance transforming circuit which are connected in sequence; the charge amplifying and adjusting circuit is a charge-voltage transforming circuit composed of an operational amplifier; the integral transforming The circuit is a precision hardware integrating circuit composed of operational amplifiers; the impedance transforming circuit is a circuit that transforms the actual load impedance into the optimum load impedance required by the pre-stage network. The output end of the charge amplification and adjustment circuit is connected with the input end of the integral conversion circuit, and the output end of the integral conversion circuit is connected with the input end of the impedance conversion circuit. The utility model improves the current situation that conventional vibration sensors can only measure acceleration, provides a piezoelectric sensor circuit that can be used to measure vibration speed, and is suitable for various types of piezoelectric vibration speed sensors, piezoelectric vibration displacement sensors, etc. Vibration sensor.
Description
Technical field
The utility model relates to characteristic of rotating machines vibration signal detection fields, and in particular to a kind of for measuring vibration velocity
Sensor circuit designs.
Background technique
Vibrating sensor is the key components of all kinds of rotating machinery vibration parameters measurements.Its quality directly affects
Accuracy, the reliability index measured to vibration parameters, is directly related to the safe operation of equipment.Existing vibrating sensor is general
It is existing to need a whole set of analysis instrument and software systems to its fault diagnosis all over being all piezoelectric acceleration transducer
National standard propose equipment health vibration separation table be all with vibration severity (mm/s) carry out classification.Directly adopt vibration velocity
Sensor can preferably reflect vibration severity, be more convenient for diagnosis of the client to equipment quality health.
Utility model content
The piezoelectric velocity sensor electricity that the purpose of this utility model is to provide a kind of for measuring vibration velocity signal
Road improves above-mentioned problem well.
The technical solution of the utility model is as follows:
A kind of vibrating speed sensors circuit, including charge amplification adjustment circuit, sophisticated hardware integral transformation circuit and resistance
Transformation circuit；
The charge amplifies adjustment circuit, including the first operational amplifier (U1A)；First operational amplifier (U1A) it is anti-
Signal ground, the second electricity of non-inverting input terminal series connection of the first operational amplifier (U1A) are followed by input terminal series connection first resistor (R8)
The signal input part of (R1) afterwards as charge amplification adjustment circuit is hindered, 3rd resistor (R5) is connected to the first operational amplifier
(U1A) between non-inverting input terminal and signal ground, the 4th resistance (R7) is connected to the anti-phase input of the first operational amplifier (U1A)
Between end and output end, output end of the output end of the first operational amplifier (U1A) as charge amplification adjustment circuit.
The sophisticated hardware integral transformation circuit, including second operational amplifier (U1B)；Second operational amplifier (U1B)
Non-inverting input terminal the 5th resistance (R6) of connecting be followed by signal ground, the 6th resistance (R3) of series connection is connected to second operational amplifier
(U1B) it between inverting input terminal and output end, connects after the second capacitor (C2) is in parallel with third capacitor (C4) with first capacitor
It accesses between the non-inverting input terminal and output end of second operational amplifier (U1B), the 7th resistance (R2) series connection access first capacitor
Input terminal between the second capacitor (C2) third capacitor (C4) in parallel as sophisticated hardware integral transformation circuit, the tenth resistance
(R4) output end of the output end of series connection access second operational amplifier (U1B) as sophisticated hardware integral transformation circuit.
The impedance inverter circuit, the pole G including field-effect tube (Q2) are connected after the 5th capacitor (C7) of the 4th capacitor (C6)
Connect power ground, the input terminal between the 5th capacitor (C7) of the 4th capacitor (C6) as impedance inverter circuit；The D of field-effect tube (Q2)
It connects between pole and the pole G and accesses diode eleventh resistor (R12) twelfth resistor (R11), the anode of diode connects field-effect
Manage the pole D of (Q2), the cathode of diode is connected with low 11 resistance, eleventh resistor (R12) and twelfth resistor (R11) it
Between series connection thirteenth resistor (R10) be followed by power ground.The pole S of field-effect tube (Q2) is connected with the pole B of triode (Q1), three poles
It manages after accessing thirteenth resistor (R10) between the pole C and the pole B of (Q1), the pole C connects power ground, the pole E of triode (Q1) and field-effect
Output end after the pole the D connection of pipe (Q2) as impedance inverter circuit.
The output end of charge amplification adjustment circuit (A) and the input terminal of the sophisticated hardware integral transformation circuit (B)
It is connected.The output end of the sophisticated hardware integral transformation circuit (B) is connected with the input terminal of the impedance inverter circuit (C)
It connects.
The advantageous effects of the utility model are:
The utility model, which improves conventional vibration sensor, can only measure the status of acceleration, and providing one kind can be used for surveying
The piezoelectric transducer circuit of vibration velocity is measured, a plurality of types of surveys such as vibrating speed sensors, vibration displacement sensor are suitble to
Vibration sensor.
The utility model will provide in the description of specific embodiment part below, will partially become from the following description
It obtains more obvious.
Detailed description of the invention
Fig. 1 is the complete schematic of the utility model.
Fig. 2 is the charge amplification adjustment circuit figure of the utility model.
Fig. 3 is the sophisticated hardware integral transformation circuit diagram of the utility model.
Fig. 4 is the impedance inverter circuit figure of the utility model.
Specific embodiment
Specific embodiments of the utility model will be further explained with reference to the accompanying drawing.
The utility model includes that charge amplification adjustment circuit (Fig. 1), sophisticated hardware integral transformation circuit (Fig. 2) and impedance become
Change circuit (Fig. 3) three parts.The input/output terminal of sequential connection three.
As shown in Figure 1, charge amplification adjustment circuit includes operational amplifier U1A；The anti-phase input of operational amplifier U1A
It is grounded GND after the series resistance R9 of end, is adjusted after the non-inverting input terminal series resistance R37 of operational amplifier U1A as charge amplification
The input terminal Vi of circuit, resistance R8 are connected between the non-inverting input terminal of operational amplifier U1A and ground GND, and resistance R1 is connected to
Between the inverting input terminal and output end of operational amplifier U1A, the output end series resistance R32 of operational amplifier U1A, parallel connection
Resistance R3 and resistance R4 after as charge amplification adjustment circuit output terminals A.
As shown in Fig. 2, weak signal compensation adjustment circuit includes operational amplifier U1B；The reverse phase of operational amplifier U1B is defeated
Enter to hold the input terminal A (i.e. the output terminals A of Fig. 1) after series resistance R2, resistance R13 as weak signal compensation adjustment circuit, capacitor
C20 is in parallel with resistance R13, is grounded GND, operational amplifier U1B after the non-inverting input terminal series resistance R10 of operational amplifier U1B
Positive power source terminal connection drop-down capacitor C22 and connect positive pole VCC, the negative power end of operational amplifier U1B connects drop-down
Capacitor C23 and connect power cathode VSS, zener diode D2 anode connection power cathode VSS and cathode be grounded GND,
Resistance R15 is connected between the inverting input terminal and output end of operational amplifier U1B, is connected after resistance R5 and capacitor C21 series connection
Between the inverting input terminal and output end of operational amplifier U1B, make after the output end series resistance R16 of operational amplifier U1B
For the output end vo of weak signal compensation adjustment circuit.
The working principle of the utility model is as follows:
Since the piezoelectric effect that piezoelectric vibration pickup is the piezo-electric crystal used is realized, the telecommunications of piezo-electric crystal output
Number it is faint charge signal, cannot directly carries out signal processing, it is necessary to which charge shown in FIG. 1 is passed through to the charge signal of output
Amplify adjustment circuit and carry out charge-voltage conversion, just can be used for subsequent signal processing.Charge amplification adjustment electricity shown in FIG. 1
Road plays a key role the stabilization and accuracy of measurement.Therefore in the present invention, charge amplifier selects technical grade
Rail-to-rail precision amplifier, the acceleration signal that piezoelectric signal exports after charge amplifier, which needs to integrate by Fig. 2 hardware, to be become
It changes circuit and obtains speed signal, in order to preferably match back-end circuit, as far as possible recovering signal, need to pass through speed signal
It is exported after crossing Fig. 3 impedance inverter circuit as sensor signal.While the anti-interference ability in order to preferably realize sensor, it is full
The reliable and stable requirement of sufficient technical grade is needed to be designed on sensor structure using double shield, preferably be provided anti-interference
Ability.
Above-described is only preferred embodiments of the present invention, and the utility model is not limited to above embodiments.It can
With understand, those skilled in the art directly export or associate under the premise of not departing from the basic conception of the utility model its
His improvements and changes, are considered as being included within the scope of protection of this utility model.
Claims (5)
1. a kind of vibrating speed sensors circuit, which is characterized in that including charge amplification adjustment circuit (A), sophisticated hardware integral
Translation circuit (B) and impedance inverter circuit (C)；The charge signal of input is converted to electricity by charge amplification adjustment circuit (A)
Acceleration voltage signal is exported after pressure signal and after amplifying filtering processing, acceleration voltage signal accesses the sophisticated hardware
Integral transformation circuit (B) is converted into velocity voltage signal, and velocity voltage signal accesses the impedance inverter circuit (C) and carries out signal
Output.
2. a kind of vibrating speed sensors circuit as described in claim 1, it is characterised in that: the charge amplifies adjustment circuit,
Including the first operational amplifier (U1A)；Reverse input end series connection first resistor (R8) of first operational amplifier (U1A) is followed by letter
Non-inverting input terminal series connection second resistance (R1) on number ground, the first operational amplifier (U1A) amplifies adjustment circuit as charge afterwards
Signal input part, 3rd resistor (R5) are connected between the non-inverting input terminal and signal ground of the first operational amplifier (U1A), and the 4th
Resistance (R7) is connected between the inverting input terminal and output end of the first operational amplifier (U1A), the first operational amplifier (U1A)
Output end as charge amplification adjustment circuit output end.
3. a kind of vibrating speed sensors circuit as described in claim 1, it is characterised in that: the sophisticated hardware integral transformation electricity
Road, including second operational amplifier (U1B)；The non-inverting input terminal of second operational amplifier (U1B) is connected after the 5th resistance (R6)
Signal ground is connect, the 6th resistance (R3) of series connection is connected between the inverting input terminal and output end of second operational amplifier (U1B), the
It connects after two capacitors (C2) are in parallel with third capacitor (C4) with first capacitor (C3) and accesses the same phase of second operational amplifier (U1B)
Between input terminal and output end, the 7th resistance (R2) series connection access first capacitor (C3) is electric with the second capacitor (C2) third in parallel
Hold the input terminal between (C4) as sophisticated hardware integral transformation circuit, the tenth resistance (R4) series connection access second operational amplifier
(U1B) output end of the output end as sophisticated hardware integral transformation circuit.
4. a kind of vibrating speed sensors circuit as described in claim 1, it is characterised in that: the impedance inverter circuit, including
The pole G series connection the 5th capacitor (C7) of the 4th capacitor (C6) of field-effect tube (Q2) is followed by power ground, the 5th capacitor of the 4th capacitor (C6)
(C7) as the input terminal of impedance inverter circuit between；It connects between the pole D of field-effect tube (Q2) and the pole G and accesses diode (D2)
Eleventh resistor (R12) twelfth resistor (R11), the anode of diode connect the pole D of field-effect tube (Q2), the cathode of diode with
Eleventh resistor (R12) is connected, thirteenth resistor of connecting between eleventh resistor (R12) and twelfth resistor (R11) (R10)
It is followed by power ground, the pole S of field-effect tube (Q2) is connected with the pole B of triode (Q1), between the pole C and the pole B of triode (Q1)
After accessing thirteenth resistor (R10), the pole C connects power ground, and the pole E of triode (Q1) is made after connecting with the pole D of field-effect tube (Q2)
For the output end of impedance inverter circuit.
5. a kind of vibrating speed sensors circuit as described in claim 1, it is characterised in that: the charge amplifies adjustment circuit
(A) output end is connected with the input terminal of the sophisticated hardware integral transformation circuit (B), the sophisticated hardware integral transformation electricity
The output end on road (B) is connected with the input terminal of the impedance inverter circuit (C).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821878735.4U CN209055214U (en) | 2018-11-15 | 2018-11-15 | A vibration velocity sensor circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821878735.4U CN209055214U (en) | 2018-11-15 | 2018-11-15 | A vibration velocity sensor circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209055214U true CN209055214U (en) | 2019-07-02 |
Family
ID=67053301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821878735.4U Expired - Fee Related CN209055214U (en) | 2018-11-15 | 2018-11-15 | A vibration velocity sensor circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209055214U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111380605A (en) * | 2020-05-19 | 2020-07-07 | 中国工程物理研究院总体工程研究所 | Sensor signal conditioning circuit based on IEPE (emitter edge detector) adapter for measuring vibration speed |
| CN112858721A (en) * | 2021-01-18 | 2021-05-28 | 天地（常州）自动化股份有限公司 | Intrinsic safety type equipment and method for converting vibration acceleration into current signal |
-
2018
- 2018-11-15 CN CN201821878735.4U patent/CN209055214U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111380605A (en) * | 2020-05-19 | 2020-07-07 | 中国工程物理研究院总体工程研究所 | Sensor signal conditioning circuit based on IEPE (emitter edge detector) adapter for measuring vibration speed |
| CN112858721A (en) * | 2021-01-18 | 2021-05-28 | 天地（常州）自动化股份有限公司 | Intrinsic safety type equipment and method for converting vibration acceleration into current signal |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190702 |