CN209541891U - Portable shakes analyzer - Google Patents
Portable shakes analyzer Download PDFInfo
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- CN209541891U CN209541891U CN201920115835.XU CN201920115835U CN209541891U CN 209541891 U CN209541891 U CN 209541891U CN 201920115835 U CN201920115835 U CN 201920115835U CN 209541891 U CN209541891 U CN 209541891U
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Abstract
The utility model discloses a kind of portables to shake analyzer, is made of sequentially connected sensor, difference amplifier, analog-digital converter, controller, digital analog converter display driver and liquid crystal display.Sensor includes piezoelectric transducer and laser range sensor；Difference amplifier is KM324 chip, and analog-digital converter is AD7705 chip, and controller is MCS-96 single-chip microcontroller, and digital analog converter is MAX7541 chip, and digital analog converter display driver is ICC7106 chip.The utility model is directed to anti-interference ability when applying under complex environment, is amplified using sensor anti-jamming signal, and reload signal converts differential amplification, to improve anti-interference ability.It can searching focal point from the distant to the near, the vibration frequency being convenient for measuring can detecte vibration size and direction by adjusting detection angles.It is measured using non-contacting method, and achievable telemeasurement in industry spot that is, be used conveniently and safely.
Description
Technical field
The utility model relates to a kind of vibration analyzers more particularly to a kind of portable to shake analyzer, belong to detector
Device technical field.
Background technique
Current existing vibration analyzer, general utility functions are various, expensive, not strong to the adaptability at complicated scene,
The specific aim that scene uses is poor.At the scene in application, being especially the application under the complex environment of iron and steel enterprise, there are functions
Waste and the not strong problem of specialized function.With the development of modern industry, in electronic engineering, automatic control, communication engineering, measurement
The technical fields such as instrument, instrument and computer, it is often necessary to which the vibration of various running equipments is monitored.
Summary of the invention
The technical problem to be solved by the present invention is to provide a kind of portables to shake analyzer.
In order to solve the above technical problems, the technical solution adopted in the utility model is:
A kind of portable shakes analyzer, including pedestal, pre-compressed spring, mass block, piezoelectric device, control circuit and outer
Shell；Pre-compressed spring, mass block, piezoelectric device have bolt to be sequentially fixed on pedestal, and shell is placed in pre-compressed spring, mass block, pressure
Outside electrical part, it is detachably connected with pedestal；Control circuit by sequentially connected sensor, difference amplifier, analog-digital converter,
Controller, digital analog converter display driver and liquid crystal display composition.
Sensor includes piezoelectric transducer and laser range sensor；Difference amplifier is KM324 chip, analog-digital converter
For AD7705 chip, controller is MCS-96 single-chip microcontroller, and digital analog converter is MAX7541 chip, digital analog converter display driving
Device is ICC7106 chip；Amplifying circuit that piezoelectric transducer and laser range sensor are provided through KM324 chip respectively and corresponding
AD7705 chip connect the respective input mouth of MCS-96 single-chip microcontroller, the response output port of MCS-96 single-chip microcontroller is through MAX7541
Chip connects the respective input mouth of ICC7106 chip；The corresponding output port of ICC7106 chip connects the corresponding defeated of liquid crystal display
Inbound port.
Having the technical effect that acquired by by adopting the above technical scheme
1, the utility model is amplified for anti-interference ability when applying under complex environment using sensor anti-jamming signal,
And reload signal converts differential amplification, to improve anti-interference ability.
2, the utility model can searching focal point from the distant to the near, it may be convenient to measure the vibration frequency of object point
Rate can detecte out point vibration size and direction by adjusting detection angles.
3, it is measured when the utility model detects using non-contacting method, achievable telemeasurement is that is, in industry spot
It is used conveniently and safely.
4, the utility model can be carried by man-hour manually hand-held, and LCD Panel shows vibration frequency and quantity, if right and wrong
It repeats to shake, can show the vibration range in certain time, meet various complex environment fields to shock detection and its analysis
Needs.
Detailed description of the invention
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
Fig. 1 is the structure chart of piezoelectric acceleration transducer；
Fig. 2 is the principles of the present invention block diagram；
Fig. 3 is the circuit diagram of control circuit in the utility model；
1-- pre-compressed spring, 2- piezoelectric device, 3- bolt, 4- shell, 5- mass block, 6- pedestal.
Specific embodiment
Embodiment 1:
A kind of portable shakes analyzer, including pedestal, pre-compressed spring 1,5 pieces of quality, piezoelectric device 2, control circuit and
Shell；Pre-compressed spring 1, mass block 5, piezoelectric device 2 have bolt 3 to be sequentially fixed on pedestal 6, shell 4 be placed in pre-compressed spring 1,
Outside mass block 5, piezoelectric device 2, it is detachably connected with pedestal 6；Control circuit is by sequentially connected sensor, differential amplification
Device, analog-digital converter, controller, digital analog converter display driver and liquid crystal display composition.
Sensor includes piezoelectric transducer and laser range sensor；Difference amplifier is KM324 chip, analog-digital converter
For AD7705 chip, controller is MCS-96 single-chip microcontroller, and digital analog converter is MAX7541 chip, digital analog converter display driving
Device is ICC7106 chip；Amplifying circuit that piezoelectric transducer and laser range sensor are provided through KM324 chip respectively and corresponding
AD7705 chip connect the respective input mouth of MCS-96 single-chip microcontroller, the response output port of MCS-96 single-chip microcontroller is through MAX7541
Chip connects the respective input mouth of ICC7106 chip；The corresponding output port of ICC7106 chip connects the corresponding defeated of liquid crystal display
Inbound port.
Piezoelectric acceleration transducer perception vibration strength, laser sensor perceive vibration amplitude size, there is amplification
System amplifies sensor signal, and modular system is converted into the digital quantity that control system can identify, and by control system
Intelligent program is compared choice to it, issues vibration frequency amplitude data signals, is subsequently converted by digital analog converter
For the analog quantity that liquid crystal display drive system can identify, liquid crystal display is driven, is finally displayed it again by liquid crystal display.
Piezoelectric acceleration transducer is one of core devices of the system, which is sensed using piezoelectric type acceleration
Device generates a power directly proportional to acceleration after the vibrated acceleration effect of sensitive core body quality, and piezoelectric material is by this masterpiece
The charge signal directly proportional to this power is formed along its surface with rear.With dynamic range big, wide frequency range, it is sturdy and durable,
By external interference is small and piezoelectric material stress is from generating the features such as charge signal does not need any extraneous power supply.
For piezoelectric acceleration transducer due to small in size, quality is small, bandwidth (several hertz of zero point are arrived tens of kilohertzs), measurement
Range is wide (10-5m/s2 ~ 104m/s2), using wide temperature region (400 DEG C ~ 700 DEG C), therefore is widely used in acceleration, vibration and punching
Hit measurement.Fig. 1 is a kind of structure chart of piezoelectric acceleration transducer.It mainly by piezoelectric element, mass block, pre-compressed spring,
The composition such as pedestal and shell.Whole part is cased, and is fixed by bolt.Mass block is generally larger by volume mass
Material (such as tungsten or heavy metal) be made.The effect of pre-compressed spring is to load to generate precompression to mass block, to guarantee acting on
When power changes, chip is compressed always.Entire component is incorporated on pedestal.Pressure is passed in any strain of measured piece in order to prevent
Glitch is generated on electric chip, pedestal generally requires to be made thicker.Pedestal is rigidly fixed together with testee.Work as acceleration
Spend sensor and measured object together by impact vibration when, effect of the piezoelectric element by mass block inertia force, in piezoelectric element
Two surfaces on generate alternating voltage or charge.When vibration frequency is far below the intrinsic frequency of sensor, sensor output
Voltage or charge it is directly proportional to active force, thus it can be seen that the acceleration of testee.
Laser range sensor is also one of core devices of the system, laser sensor: is surveyed using laser technology
The sensor of amount.It is made of laser, laser detector and measuring circuit.Laser sensor is new type measuring instrument table, it
Advantage is to be able to achieve contactless telemeasurement, and speed is fast, and precision is high, and range is big, anti-light, electrical interference ability is strong etc..
Laser range sensor is displaced using triangle measurement technology, distance, the accurate amount of vibration and Thickness sensitivity
Examining system.It is not influenced by surface object material, color and transmitting light source, and application range is extremely wide.Response frequency is up to
20KHZ can achieve 0.1HZ using filtering, and visual laser luminous point is more easier laser head operation and contraposition, simulates 0-10V
The functions such as output, software kit may be implemented waveform and show, numerical value shows and stores, Cut Time function can ignore hole and lack
The instantaneous measurement of mouth influences.
LM324 high impedance differential amplifier circuit is one of important devices of the system, and LM324 family device is with very poor
The four-operational amplifier of dynamic input, has real Differential Input.Compared with the standard operational amplifier of single supply application,
They have some remarkable advantages.Four amplifier can work low to 3.0 volts or under height to 32 volts of power supply, quiescent current
It is very low.Common-mode input range includes negative supply, thus eliminates necessity that external bias element is used in many applications
Property.
Another important core device LM324 amplifier type of the utility model: low power amplifier number: 4；Bandwidth:
1.2MHz；Pin number: 14；Operating temperature range: 0 DEG C+70 DEG C of to；Change slope: 0.5V/ μ s；Gain bandwidth: 1.2MHz；
Operating temperature is minimum: 0 DEG C；Operating temperature highest: 70 DEG C；Amplifier type: low-power consumption；Supply voltage is maximum: 32V；Power supply electricity
Pressure is minimum: 3V.This is that most common 1,2,3 foot of operational amplifier is one group 5, and 6,7 feet are one group, and 8,9,10 feet are one group,
12,13,14 feet are one group, and remaining two feet are power supplys, and 1,7,8,14 is the output pin of each group amplifier, and others are exactly defeated
Enter foot.
The 16 of the advantages that control device of the utility model is MCS-96 single-chip microcontroller, and integrated level is high, highly reliable, at low cost
Level sensor is arranged in pairs or groups with high-speed AD converter perfection, its maximum feature is not use multi-accumulator structure, and use deposit instead
Device-register architecture, the operation of CPU are directly facing the register space of 256 bytes, eliminate and add up present in general structure
The bottleneck effect of device improves the handling capacity of service speed and data.
MCS-96 single-chip microcontroller maximum feature is not use multi-accumulator structure, and use register-register structure instead, CPU
Operation be directly facing the register spaces of 256 bytes, eliminate the bottleneck effect of accumulator present in general structure, improve
The handling capacity of service speed and data.It has both the function of general controller general register and RAM, and is used as tiring out
Add device.Other 24 bytes are special register.8 × 9 × JF also has the internal RAM of 256 additional bytes, but cannot make to lead to
It is used with register.Its external data bus is operable with 16, so as to adapt to chip external memory carry out byte operation or its
He needs the different of type operations.MCS-96 series monolithic has 48 foot, two kinds of chips.48 foot chips do not provide following pins:
P0.0~P0.3 pin；P1.0~P1.7 pin；Tetra- pins of P2.3, P2.4 and P2.7 and control signal in CLKOUT,
INST, NMI and BUSWIDTH() four pins.
Sensor signal is analog signal, so needing A/D converter to realize list certainly in intelligentized instrument
The control of piece machine.16 or more high-acruracy surveys are needed in many applications, and traditional integral form and gradually compare type
It is the A/D converter analog-digital converter with self-correcting function that A/D, which implements the larger AD7705 chip of difficulty, docks monolithic
Machine is very simple and practical.
The data conversion system of the utility model is analog-to-digital conversion and digital-to-analogue conversion, and it is to answer that wherein analog-to-digital conversion, which is AD7705,
The AFE(analog front end) in 2/3 channel for low frequency measurement.The device can receive the low level input letter directly from sensor
Number, then generate serial numeral output.Using Σ-switch technology realization 16 without loss code performance.Selected is defeated
Enter signal and is sent to the dedicated front end of a gain programmable based on analog modulator.Digital filter processing modulator in piece
Output signal.By controlling the cut off and output renewal rate of register tunable filter in piece, thus to digital filtering
First trap of device is programmed.There are the ability to simulation input buffering, 2.7~3.3V or 4.75~5.25V operating voltage,
When 3V voltage, maximum power dissipation 1mW, waiting the maximum value of electric current is 8 μ A, 16 foot DIP, SOIC and TSSOP encapsulation.
MX7541 is high-speed, high precision 12-bit digital-to-analog converter chip, since the power consumption of MX7541 switching device is especially low,
And its linear distortion can be down to 0. 012 %.Therefore, the acquisition of the D/A converter chip particularly suitable for precision analog data
And control.Accurate Chip-R and temperature-compensation circuit and NMOS due to MX7541 device inside with laser production are opened
It closes, thus can fully ensure that MX7541 has 12 precision.It is encapsulated using 18 feet of standard.Its essential electrical feature is as follows:
Conversion time: 0.6 μ s has 12 linear convergent rates (1/2LSB), accuracy: 1LSB, low in energy consumption, is usually in the case of 5V
450mW can carry out four-quadrant multiplication conversion, compatible with TTL, CMOS level.
ICL7106 A/D converter is one of core devices of the system, is encapsulated for 40 foot of biserial, and BCD exports integral form
A/D converter, supply voltage=9V, source current=1.8mA, resolution ratio=3.5digit, typical simulation input voltage=±
0.2, ± 2V, typical simulation input current=10pA, clock frequency=48kHz, power consumption=10mW, operating temperature=0~70 DEG C.
The pin function of one of the important core device of utility model ICL7106 are as follows: COM(32) be analog signal public affairs
End altogether, referred to as simulation ground, when use should be shorted with the end IN-, UREF-.It TEST(37) is test lead, the end is through 500 Ω of inside
Resistance connects the common end (GND) of digital circuit, because the two is in equipotential, therefore is also referred to as digitally.POL is negative the drive of polarity instruction
Moved end.BP is the driving end of the back side LCD public electrode, referred to as " back electrode ".OSC1~OSC3 is clock oscillator exit, outside
Connecing Resistor-Capacitor Unit may make up two-stage inverter type resistance-capacitance oscillator.UREF+, UREF- are respectively the positive and negative end of reference voltage, benefit
With+2.8V the reference voltage value between U+-COM in piece, also optional outer benchmark.After source is divided, it is possible to provide required UC,
CREFREF+REF- is external reference capacitance end.IN+ and IN- is the positive and negative input terminal of analog voltage.C-terminal is connected to dynamic tune
Zero capacitance.AZBUF is buffer amplifier output end, and meeting integrating resistor RINT is integrator output terminal, by integrating capacitor CINT.
Digitally (GND) of ICL7106 is not drawn, but can be considered as test lead (TEST) digitally, which is approximately equal to electricity
The half of source voltage.
The display portion of the utility model is 2000 liquid crystal display of LASCAR/DPM, supply voltage range: 7.5V DC
To 14V DC；No. of Digits/Alpha:3-1/2；Display Size:53mm x 19mm；Panel cut out height:
33mm；Panel cuts hole width: 68mm；Operating temperature range: 0 DEG C Dao+50 DEG C；Full scale reading: 200mV；Outer width:
67.5mm；Outer width of frame: 72mm；Outline border height: 36mm；External depth: 6.7mm；Outer length/height: 32.5mm；Character ruler
It is very little: 15mm；Operating temperature is quick: 0 DEG C；Operating temperature highest: 50 DEG C；Display technology: LCD；Temperature stability+@: 30ppm/C；Electricity
Source voltage is maximum: 20V；Supply voltage is minimum: -20V；Supply voltage direct current: 9V；Supply voltage direct current is maximum: 14V；Power supply electricity
Straightening stream is minimum: 7.5V；Source current: 150 μ A；Precision, %:0.05%；Linearly ,+: 1%；Linearly ,-: 1%；Pitch: 2.54mm；
Input leakage current: 1pA typ, 10pAmax；Sample rate: 3 readings/sec.
2000 liquid crystal display of LASCAR/DPM is the display portion of the system, and supply voltage range: 7.5V DC is arrived
14V DC.No. of Digits/Alpha:3-1/2, Display Size:53mm x 19mm, panel cut out height:
33mm, panel cut hole width: 68mm, operating temperature range: 0 DEG C Dao+50 DEG C, full scale reading: 200mV.Device work
Stablize, industry spot is suitble to use.
Claims (2)
1. a kind of portable shakes analyzer, it is characterised in that: a kind of portable vibration analyzer, including pedestal, pre-compressed spring
(1), mass block (5), piezoelectric device (2), control circuit and shell (4)；Pre-compressed spring (1), mass block (5), piezoelectric device (2)
It is sequentially fixed on pedestal (6) by bolt (3), shell 4 is placed in pre-compressed spring (1), mass block (5), piezoelectric device (2) outside
Portion is detachably connected with pedestal (6)；Control circuit is by sequentially connected sensor, difference amplifier, analog-digital converter, control
Device, digital analog converter display driver and liquid crystal display composition.
2. portable according to claim 1 shakes analyzer, it is characterised in that: sensor includes piezoelectric transducer and swashs
Ligh-ranging sensor；Difference amplifier is KM324 chip, and analog-digital converter is AD7705 chip, and controller is MCS-96 monolithic
Machine, digital analog converter are MAX7541 chip, and digital analog converter display driver is ICC7106 chip；Piezoelectric transducer and laser
The amplifying circuit and corresponding AD7705 chip that distance measuring sensor is provided through KM324 chip respectively connect the corresponding of MCS-96 single-chip microcontroller
Input port, the response output port of MCS-96 single-chip microcontroller connect the respective input mouth of ICC7106 chip through MAX7541 chip；
The corresponding output port of ICC7106 chip connects the respective input mouth of liquid crystal display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920115835.XU CN209541891U (en) | 2019-01-23 | 2019-01-23 | Portable shakes analyzer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920115835.XU CN209541891U (en) | 2019-01-23 | 2019-01-23 | Portable shakes analyzer |
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| Publication Number | Publication Date |
|---|---|
| CN209541891U true CN209541891U (en) | 2019-10-25 |
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| CN201920115835.XU Active CN209541891U (en) | 2019-01-23 | 2019-01-23 | Portable shakes analyzer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110875956A (en) * | 2019-11-21 | 2020-03-10 | 刘肇基 | Student safety monitoring system based on Internet of things |
| US11575362B2 (en) * | 2018-07-01 | 2023-02-07 | Friedrich-Alexander-Universitat Erlangen-Nurnberg | Electromagnetic interference suppression components |
-
2019
- 2019-01-23 CN CN201920115835.XU patent/CN209541891U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11575362B2 (en) * | 2018-07-01 | 2023-02-07 | Friedrich-Alexander-Universitat Erlangen-Nurnberg | Electromagnetic interference suppression components |
| CN110875956A (en) * | 2019-11-21 | 2020-03-10 | 刘肇基 | Student safety monitoring system based on Internet of things |
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