CN209055214U - A kind of vibrating speed sensors circuit - Google Patents
A kind of vibrating speed sensors 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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Abstract
The utility model discloses a kind of vibrating speed sensors circuits, charge amplification adjustment circuit, integral transformation circuit and impedance inverter circuit including sequential connection；The charge amplification adjustment circuit is the charge voltage conversion circuit being made of operational amplifier；The integral transformation circuit is the sophisticated hardware integrating circuit being made of operational amplifier；The impedance inverter circuit is a kind of circuit that actual loading impedance is transformed to optimum load impedance required by prime network.The output end of the charge amplification adjustment circuit is connected with the input terminal of the integral transformation circuit, and the output end of the integral transformation circuit is connected with the input terminal of the impedance inverter circuit.The utility model, which improves conventional vibration sensor, can only measure the status of acceleration, a kind of piezoelectric transducer circuit that can be used for measuring vibration velocity is provided, a plurality of types of vibrating sensors such as piezoelectric type vibration velocity sensor, piezoelectric type vibration displacement sensor are suitble to.
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 kind of vibrating speed sensors circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821878735.4U CN209055214U (en) | 2018-11-15 | 2018-11-15 | A kind of vibrating speed sensors circuit |
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| Publication Number | Publication Date |
|---|---|
| CN209055214U true CN209055214U (en) | 2019-07-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821878735.4U Active CN209055214U (en) | 2018-11-15 | 2018-11-15 | A kind of vibrating speed sensors circuit |
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Cited By (1)
| 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 |
-
2018
- 2018-11-15 CN CN201821878735.4U patent/CN209055214U/en active Active
Cited By (1)
| 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 |
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