CN205374676U - Piezoelectricity interface circuit performance automatic test system - Google Patents
Piezoelectricity interface circuit performance automatic test system Download PDFInfo
- Publication number
- CN205374676U CN205374676U CN201520980912.XU CN201520980912U CN205374676U CN 205374676 U CN205374676 U CN 205374676U CN 201520980912 U CN201520980912 U CN 201520980912U CN 205374676 U CN205374676 U CN 205374676U
- Authority
- CN
- China
- Prior art keywords
- module
- cantilever beam
- variable load
- data acquisition
- interface circuit
- 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.)
- Active
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 22
- 238000006073 displacement reaction Methods 0.000 claims abstract description 13
- 238000002474 experimental method Methods 0.000 claims abstract description 11
- 230000010355 oscillation Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 description 7
- 238000005259 measurement Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000013480 data collection Methods 0.000 description 1
- 238000013523 data management Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007429 general method Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model provides a piezoelectricity interface circuit performance automatic test system, including host computer and the next machine, cantilever beam experiment platform, data acquisition module, signal generating module, variable load module and host system are drawn together to the next press packed bale, and the host computer is connected with host system, and host system is connected with data acquisition module, signal generating module and variable load module, data acquisition module is connected with the variable load module, and cantilever beam experiment platform is connected with signal generating module and variable load module, cantilever beam experiment platform includes fixed bolster, cantilever beam, power amplifier, vibration exciter, displacement sensor, piezoelectric patches and the interface circuit that awaits measuring, cantilever beam one end is fixed on the fixed bolster, and the vibration exciter is connected to the other end, and the vibration exciter meets signal generating module through power amplifier, the attached upper surface at the cantilever beam of piezoelectric patches, and interface circuit is connected with the variable load module through awaiting measuring, displacement sensor is used for measuring the vibration range of cantilever beam, is connected with data acquisition module.
Description
Technical field
This utility model relates to piezoelectric generating device field, more particularly, to a kind of piezoelectricity interface circuit performance automatic test system.
Background technology
At present, known piezoelectric generating device is mainly made up of piezo-electric generating element, energy interface circuit and load three part.The alternating voltage that piezo-electric generating element produces can be converted into DC voltage for load consumption through energy interface circuit.The output of energy interface circuit can change with the interface circuit load-carrying resistance change of institute.Generally with load resistor value, energy interface output power of circuit being changed this characteristic measuring method is utilize the conventional instruments such as oscillograph, functional generator and variable resistance box by mode manually, and the output of energy interface circuit and the resistance value of load are carried out pointwise test and record.Instrument volume used by general method of testing is big, and cost is high, and measuring process is complicated, and artificial error in reading is big, measures the time long.
Summary of the invention
In order to overcome existing energy interface circuit performance cost of testing system high, measurement error is big, the deficiency of measurement time length, this utility model provides a kind of piezoelectricity interface circuit performance automatic test system, and specifically energy interface output power of circuit is with the Auto-Test System of load resistor value variation characteristic curve.
For solving above-mentioned technical problem, the technical solution of the utility model is as follows:
A kind of piezoelectricity interface circuit performance automatic test system, this test system is divided into host computer and slave computer two parts, communicated by Ethernet between host computer and slave computer, described slave computer includes cantilever beam experiment porch, data acquisition module, signal generating module, variable load module and main control module, host computer is connected with the main control module of slave computer by Ethernet, and main control module is connected with data acquisition module, signal generating module and variable load module respectively；Data acquisition module is connected with variable load module, and cantilever beam experiment porch is connected with signal generating module and variable load module；
Described cantilever beam experiment porch includes fixed support, cantilever beam, power amplifier, vibrator, displacement transducer, piezoelectric patches and interface circuit to be measured；Wherein cantilever beam one end is fixed on fixed support, and the other end connects vibrator, and vibrator is connected with signal generating module by power amplifier, and piezoelectric patches is attached to the upper surface of cantilever beam, and is connected with variable load module by interface circuit to be measured；Displacement transducer is for measuring the Oscillation Amplitude of cantilever beam, and is connected with data acquisition module.
Host computer utilizes the communication mode of Ethernet and slave computer to communicate, and slave computer is controlled and data collection task, it is achieved the purpose of the automatization of test process.
In technique scheme, master control module controls signal generating module produces the sine wave exciting signal of amplitude and frequency-adjustable, pumping signal exports in vibrator through power amplifier, vibrator exciting cantilever beam, attaching piezo-electric generating element on a cantilever beam is made to produce alternating voltage, alternating voltage is input in (energy) to be measured interface circuit, and interface circuit to be measured output unidirectional current exports variable load module, and variable load both end voltage exports one of them passage of data acquisition module；The amplitude of cantilever beam is through displacement transducer collection, and one of them passage of data acquisition module is received in the output of displacement transducer；Host computer utilizes the amplitude feedback of the cantilever beam that displacement sensor arrives, and adjusts the amplitude of signal generating module output signal, it is achieved cantilever beam amplitude constant；Host computer realizes the setting of test parameter, the control of test process and the collection of data and processes function, controls slave computer, it is achieved the purpose of the automatization of test；Ethernet communication is passed through between host computer and slave computer.
Preferably, the main control module of described slave computer is based on the main control module of ARM platform, and main control module is communicated with data acquisition module, signal generating module and variable load module by spi bus.
Compared with prior art, the beneficial effects of the utility model are:
Host computer is communicated by Ethernet and slave computer, and Data Management Analysis is convenient；The integrated main control module of slave computer, signal generating module, data acquisition module and variable load module, system bulk is little lightweight, and cost is low.
Accompanying drawing explanation
Fig. 1 is system principle schematic diagram of the present utility model.
Fig. 2 is the bus connecting mode diagram of test system each functional module of slave computer.
Detailed description of the invention
Accompanying drawing being merely cited for property explanation, it is impossible to be interpreted as the restriction to this patent；In order to the present embodiment is better described, some parts of accompanying drawing have omission, zoom in or out, and do not represent the size of actual product；
To those skilled in the art, in accompanying drawing, some known features and explanation thereof are likely to omission and will be understood by.Below in conjunction with drawings and Examples, the technical solution of the utility model is described further.
As shown in Figure 1, this utility model provides a kind of piezoelectricity interface circuit performance automatic test system based on ARM platform, and it is the test system for automatically measuring piezoelectric generating device energy interface output power of circuit and load resistor value characteristic of complete set.This test system is divided into host computer and slave computer two parts, is communicated by Ethernet between host computer and slave computer.
Slave computer is divided into cantilever beam experiment porch, data acquisition module, signal generating module, variable load module and main control module.As in figure 2 it is shown, communicated by spi bus between main control module and other module.
Cantilever beam experiment porch is made up of fixed support, cantilever beam, power amplifier, vibrator, displacement transducer, piezoelectric patches and interface circuit to be measured.Cantilever beam one end is fixed on fixed support, the other end connects vibrator, input signal is amplified output in vibrator by power amplifier, drive cantilever beam shakes, the piezoelectric patches being attached to cantilever beam surface will produce deformation with cantilever beam vibrations, output AC voltage is in interface circuit, and displacement transducer is for measuring the Oscillation Amplitude of cantilever beam.
Signal generating module can be controlled by spi bus by main control module, the sinusoidal signal of output amplitude and frequency-adjustable.
Variable load module is composed in series by multiple digital regulation resistances, and load resistance can by main control module through spi bus control.
Data acquisition module is an analog-digital converter, and it can, by the voltage analog of input through analog digital conversion, be stored in buffer itself device, for main control module reading process.
Displacement transducer is output as analog quantity, and its output voltage is linear with the Oscillation Amplitude of cantilever beam, can gather the voltage output value of displacement transducer with data acquisition module, can be calculated the actual vibration amplitude of cantilever beam through host computer.
The DC voltage value at variable load module two ends is also fed in data acquisition module, and interface circuit is exported the electrical power of variable load and can be calculated by formula:, P is the output of interface circuit, and U is variable load both end voltage, and R is variable load current resistive value.
All measurement data points can be depicted as curve chart on-demand preservation data result by host computer.
Obviously, above-described embodiment of the present utility model is only for clearly demonstrating this utility model example, and is not the restriction to embodiment of the present utility model.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here without also cannot all of embodiment be given exhaustive.All any amendment, equivalent replacement and improvement etc. made within spirit of the present utility model and principle, should be included within this utility model scope of the claims.
Claims (2)
1. a piezoelectricity interface circuit performance automatic test system, this test system is divided into host computer and slave computer two parts, communicated by Ethernet between host computer and slave computer, it is characterized in that, described slave computer includes cantilever beam experiment porch, data acquisition module, signal generating module, variable load module and main control module, host computer is connected with the main control module of slave computer by Ethernet, and main control module is connected with data acquisition module, signal generating module and variable load module respectively；Data acquisition module is connected with variable load module, and cantilever beam experiment porch is connected with signal generating module and variable load module；
Described cantilever beam experiment porch includes fixed support, cantilever beam, power amplifier, vibrator, displacement transducer, piezoelectric patches and interface circuit to be measured；Wherein cantilever beam one end is fixed on fixed support, and the other end connects vibrator, and vibrator is connected with signal generating module by power amplifier, and piezoelectric patches is attached to the upper surface of cantilever beam, and is connected with variable load module by interface circuit to be measured；Displacement transducer is for measuring the Oscillation Amplitude of cantilever beam, and is connected with data acquisition module.
2. test system according to claim 1, is characterized in that: the main control module of described slave computer is based on the main control module of ARM platform, and main control module is communicated with data acquisition module, signal generating module and variable load module by spi bus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520980912.XU CN205374676U (en) | 2015-12-01 | 2015-12-01 | Piezoelectricity interface circuit performance automatic test system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520980912.XU CN205374676U (en) | 2015-12-01 | 2015-12-01 | Piezoelectricity interface circuit performance automatic test system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205374676U true CN205374676U (en) | 2016-07-06 |
Family
ID=56261937
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520980912.XU Active CN205374676U (en) | 2015-12-01 | 2015-12-01 | Piezoelectricity interface circuit performance automatic test system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205374676U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110715717A (en) * | 2019-10-18 | 2020-01-21 | 聂豪成 | Method and device for measuring quality of astronaut |
-
2015
- 2015-12-01 CN CN201520980912.XU patent/CN205374676U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110715717A (en) * | 2019-10-18 | 2020-01-21 | 聂豪成 | Method and device for measuring quality of astronaut |
| CN110715717B (en) * | 2019-10-18 | 2020-05-15 | 聂豪成 | Method and device for measuring quality of astronaut |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101858811B (en) | Method for compensating signal of high-precision pressure sensor | |
| CN206489185U (en) | Acceleration transducer test device | |
| CN202522915U (en) | Data acquisition system based on vibration wire type sensor | |
| CN102519617A (en) | Digitalized detection method for temperature information of micromechanical quartz gyroscope sensitive device | |
| CN104091430A (en) | Wireless communication technology-based bridge strain monitoring system and method | |
| CN105466655A (en) | Loading device and loading method for measuring micro vibration characteristic of structure | |
| CN104502737A (en) | Direct dynamic force measurement based piezoelectric strain constant measurement device and method | |
| CN101949770A (en) | Identifying and testing system of static force of blades of wind driven generator | |
| CN103281044A (en) | Method for tuning active frequency of magnetically-actuated piezoresistive vibration pickup type MEMS (Microelectromechanical Systems) resonator | |
| CN105352632A (en) | Digital pressure sensor and method for obtaining digital pressure signal | |
| CN205374676U (en) | Piezoelectricity interface circuit performance automatic test system | |
| CN1278329A (en) | Strain gauge strip and applications thereof | |
| CN106233135B (en) | Using the structural healthy monitoring system of electromechanical resistance technique | |
| CN104568242B (en) | The small-sized resonant vibration barrel pressure pickup signal conditioning circuit of piezoelectric excitation | |
| CN107063147A (en) | A kind of dynamic strain measurement method of use vibrating string extensometer | |
| KR101056473B1 (en) | Instrumentation | |
| CN104764559A (en) | Closed-loop control circuit of silicon resonant pressure sensor and realization method thereof | |
| CN204330900U (en) | Based on the piezoelectric strain constant measurement mechanism that dynamic force is directly measured | |
| CN105115535A (en) | Simulation apparatus of capacitance sensor | |
| CN201083518Y (en) | Waveform height measuring systems | |
| CN105932906B (en) | A kind of piezoelectric energy collector and preparation method thereof | |
| CN105264445A (en) | Apparatus and method for applying a load to a material | |
| Martens et al. | TMS320F28335-based piezosensor monitor-node | |
| Pereira et al. | An integrated testing solution for piezoelectric sensors and energy harvesting devices | |
| CN110579229A (en) | Piezomagnetic sensor detection system based on frequency sweep detection |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |