CN209416580U - A kind of pressure-sensitivity test equipment - Google Patents
A kind of pressure-sensitivity test equipment Download PDFInfo
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- CN209416580U CN209416580U CN201821947082.0U CN201821947082U CN209416580U CN 209416580 U CN209416580 U CN 209416580U CN 201821947082 U CN201821947082 U CN 201821947082U CN 209416580 U CN209416580 U CN 209416580U
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- mass block
- test
- piezoelectric membrane
- pressure
- setting tool
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Abstract
The utility model relates to pressure sensor testing fields, provide a kind of pressure-sensitivity test equipment, comprising: test bottom plate, for carrying piezoelectric membrane；Support frame；Mass block；Setting tool is set to support frame as described above, and for fixing the mass block, and the mass block is located above the piezoelectric membrane；Controller, including processor, memory, communication interface and communication bus, the processor, the memory and the communication interface complete mutual communication by the communication bus, the communication interface is connect with the setting tool and piezoelectric membrane respectively, the memory is for storing an at least executable instruction, the executable instruction makes the processor control the setting tool, and tests the piezoelectric membrane.The utility model guarantees that dynamic stress when testing is constant, greatly improves the efficiency of test.
Description
Technical field
The utility model relates to pressure sensor testing fields, more particularly to a kind of pressure-sensitivity test equipment.
Background technique
Piezoelectric membrane is also known as PVDF segregation fluoride piezo film, is a kind of novel high polymer piezoelectric material, is usually used in
Type of dynamic strain sensor has very high sensitivity, it might even be possible to the pulse of human body is measured across housing.When stretching or bending
When piezoelectric membrane, film upper/lower electrode surface can generate an electric signal, and proportional to deformation.Therefore, piezoelectric membrane
Sensitivity the life signal acquisition capacity of human skin surface is influenced it is very big, when sensitivity is undesirable, oscillograph
The waveform that can not find out signal is unfavorable for the acquisition and analysis of follow-up signal.Therefore, in factory, when material supplied materials, need into
Row piezoelectric membrane is tested, and guarantees that the pressure-sensitivity for the piezoelectric membrane that supplier provides meets the requirement of product.
Current existing pressure-sensitivity test mode, be mostly using piece-picking type test mode or using motor push rod by
Press test mode.Primary structure is made of rotating electric machine and plectrum, and rotating electric machine at the uniform velocity rotates, and plectrum is driven to rotate together,
While rotation, plectrum is gently swept on the piezoelectric membrane belt of lay flat, and piezoelectric membrane exports uniform wave mode at this time, defeated
The peak value of waveform can indicate the sensitivity of corresponding belt out, choose a qualified limit value, so that it may judge piezoelectric membrane
Whether sensitivity meets the requirements.
Applicant has found that existing mode has the following problems in practice process:
Existing pressure sensor test mode is not suitable for being used for a long time, and is only suitable for small-lot testing, because of such knot
Structure can have abrasion to plectrum when used for a long time, will affect the waveform of final output in this way, influence the judgement of sensitivity.And plectrum
The power gently swept is uncontrollable, and when power becomes larger or becomes smaller due to some odjective cause, we can not intuitively experience the size of power.
Since piezoelectric membrane is the very high sensor of sensitivity, subtle variation will have a great impact to test result, institute
It can not control error in producing line if being used for such device.
Summary of the invention
The utility model is the above-mentioned technical problem solved, provides a kind of pressure-sensitivity test equipment, comprising:
Bottom plate is tested, for carrying piezoelectric membrane；
Support frame；
Mass block；
Setting tool is set to support frame as described above, and for fixing the mass block, and the mass block is located at the pressure
Above conductive film；
Controller, including processor, memory, communication interface and communication bus, the processor, the memory and institute
State communication interface and complete mutual communication by the communication bus, the communication interface respectively with the setting tool and
Piezoelectric membrane connection, the memory make the processor control for storing an at least executable instruction, the executable instruction
The setting tool is made, and the piezoelectric membrane is tested.
Further, the setting tool is electromagnet, for the quality to be adsorbed or discharged according to the instruction of controller
Block.
Further, the setting tool further includes guide rail, for making the mass block according under scheduled track
It falls.
Further, the test backplate surface setting test fixing clamp, for fixing the piezoelectric membrane.
Further, support frame as described above further comprises lifter switch, for adjusting the height of support frame as described above.
It further, further comprise test idler wheel, the test idler wheel and the controller and piezoelectric membrane by leading to
Believe that interface is connected.
Further, the mass block is cylindrical body or spherosome.
Compared with prior art, the utility model carries out pressure-sensitivity by using the mode of mass block freely falling body
Test reduces the operation difficulty of staff, improves testing efficiency, will not cause to wear to mass block, when guaranteeing to test
Dynamic stress is constant, and and can intuitively experience whether dynamic stress has change, greatly improve the efficiency of test.
Meanwhile the fixation of mass block is carried out by using electromagnet mode, the automatic operation of test is effectively realized, survey is improved
Examination mode, improves testing efficiency.
Detailed description of the invention
It, below will be to tool in order to illustrate more clearly of the utility model specific embodiment or technical solution in the prior art
Body drawings that need to be used in the embodiment or the prior art description is briefly described.In all the appended drawings, similar element
Or part is generally identified by similar appended drawing reference.In attached drawing, each element or part might not be drawn according to actual ratio.
Fig. 1 is a kind of pressure-sensitivity test equipment that the utility model embodiment 1 provides；
Fig. 2 is a kind of pressure-sensitivity test equipment that the utility model embodiment 2 provides.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain
The utility model is not used to limit the utility model.
As long as in addition, technical characteristic involved in the various embodiments of the present invention described below each other it
Between do not constitute conflict and can be combined with each other.
The utility model embodiment 1 provides a kind of equipment for pressure-sensitivity test, as shown in Fig. 1, the equipment packet
It includes:
Bottom plate 1 is tested, for carrying piezoelectric membrane 7；
Support frame 2；
Mass block 4；
Setting tool 3 is set to support frame as described above 2, and for fixing the mass block 4, and the mass block 4 is located at institute
State 7 top of piezoelectric membrane；
Controller 10, including processor, memory, communication interface and communication bus, the processor, the memory and
The communication interface completes mutual communication by the communication bus, the communication interface respectively with the setting tool
It is connected with piezoelectric membrane, the memory makes the processor for storing an at least executable instruction, the executable instruction
Piezoelectric membrane 7 is tested according to preset program.
As shown in Figure 1, test bottom plate 1 is usually a test platform, test article and fixed test can be placed thereon
Instrument, meanwhile, in order to reduce the volume of test equipment, 10 circuit of controller is arranged in test bottom plate the utility model embodiment
Circuit interface is reserved in inside on bottom plate.Material and the shape etc. for testing bottom plate 1, can be according to the needs of test environment
Make the change of adaptability.
Support frame 2 is L-shaped for fixing setting tool 3, and one end is fixed on test bottom plate, the other end and regular worker
Tool 3 links together, for setting tool 3 to be fixed on test 1 upper horizontal position of bottom plate.Certainly, the shape of the support frame 2
Shape and material equally can also be according to the changes for needing to carry out adaptability of test environment.
The surface of test bottom plate 1 is arranged in setting tool 3, can be set in the center of test bottom plate, can also
To be arranged in side, the setting of position follows the principle for facilitating and placing test object.The setting tool 3 can be a folder
Tool, is also possible to the setting tool of other forms., it is preferable to use electromagnet is fixed in the utility model embodiment, electricity
Magnet has the characteristics that facilitate control, it may be convenient to carry out the absorption and release of mass block, realize automatic operation.
Mass block 4 is used for and setting tool 3 cooperates, and is tested piezoelectric membrane.The utility model embodiment is to piezoelectricity
The principle that film is tested is the movement of falling object using mass block, and device piezoelectric membrane generates pressure, therefore mass block
Weight and height, need according to be tested piezoelectric membrane characteristic be set in advance.
Controller 10 is control circuit, it includes processor, memory, communication interface and communication bus, the processor,
The memory and the communication interface complete mutual communication, communication interface and piezoelectric membrane by the communication bus
And electromagnet is connected, as shown in Figure 1,8 be the test interface of piezoelectric membrane.Memory storage has executable test function
Instruction, instruction control controller perform the following operations:
When controller 10, which starts, to be tested, tester presses start button 9, system electrification, and controller control electromagnet 3 is released
Mass block 4 is put, mass block 4 is fallen on tested piezoelectric membrane, and controller receives the voltage signal of piezoelectric membrane output, and according to institute
Voltage signal is stated, the pressure-sensitivity of piezoelectric membrane is tested.In general, presetting a voltage model in the controller
It encloses, after controller 10 receives voltage signal, crest voltage can be extracted, judge whether crest voltage is located at preset threshold voltage
In range, if test passes through, if it was not then test does not pass through.
When needing to carry out multi-point sampler to piezoelectric membrane, automatic test is also may be implemented in the utility model embodiment,
After completing primary test, the starting of controller 10 is tested for the second time, and controller 10, which controls setting tool 3, will fall in piezoelectric membrane
On 4 automatic absorbing of mass block get up, and mobile piezoelectric membrane 7 arrives next test point, and controller 10 controls setting tool 3 and releases
Mass block 4 is put, and receives piezoelectric membrane in the voltage signal of moment sending that is impacted, by judging whether in preset thresholding electricity
It presses in range, to judge this time to test whether qualification.
Further, mass block 4 generates offset in dropping process in order to prevent, and the utility model embodiment is in fixation
Guide rail 5 is arranged in the lower section of tool 3, for making mass block 4 fall according to scheduled track.It can more make to survey by the way that guide rail 5 is arranged
It is more accurate to try, meanwhile, it is also easier to realize the automatic operation of test.
Further, it is tested 7 position of piezoelectric membrane in order to prevent to shift, the utility model embodiment is being tested
1 surface of bottom plate setting test fixing clamp 6, for piezoelectric membrane to be fixed on testing base.
Further, in order to more easily carry out manual operations, the utility model embodiment 2 increases solid on bottom plate
Determine 3 control button 11 of tool, the whereabouts for hand-guided mass block.
Further, in order to which with more intuitively expressing test result, the utility model embodiment 2 is arranged on bottom plate
Test result indicator light 12, when test passes through, controller controls green light, and when test crash, controller controls red light
It is bright, it can be with more intuitively informing tester's test result.
The utility model carries out the test of pressure-sensitivity by using the mode of mass block freely falling body, reduces work people
The operation difficulty of member improves testing efficiency, will not cause to wear to mass block, and dynamic stress when guaranteeing test is constant, and
And and can intuitively experience whether dynamic stress has change, greatly improve the efficiency of test.Meanwhile by using electricity
Magnet mode carries out the fixation of mass block, effectively realizes the automatic operation of test, improves test mode, improves survey
Try efficiency.
For further optimal inspection, the degree of automation of test is promoted, the utility model embodiment 2 is in embodiment
On the basis of 1, equipment optimization is carried out, as shown in Figure 2.
The utility model embodiment improves support frame 2, increases lifter switch 14, for easily adjusting branch
The height of support.Because different test objects, quality and test height to mass block are all in actual application process
There is different requirements, by increasing lifter switch 14, it may be convenient to adjust the height of mass block whereabouts, and then control quality
The impact force that block whereabouts generates piezoelectric membrane, increases the use scope of testing tool.
Meanwhile the automatic test in order to use large batch of piezoelectric membrane, the utility model embodiment increase test
Idler wheel 13, test idler wheel 13 can be fixed on test bottom plate 1, can also individually placed and test side plate cooperation.Test idler wheel
13 include motor and test interface, and test idler wheel 13 is connected with 10 bus of controller, and one side controller 10 passes through bus marco
The rolling of idler wheel 13 is tested, on the other hand, is attached by test idler wheel 13 and piezoelectric membrane 7.
Tested piezoelectric membrane is placed on test bottom plate 1 by tester in advance, and one end is connected on test idler wheel 13,
Open test switch 9, starting test.Controller 10 controls electromagnet and discharges mass block 4, and controller 10 receives piezoelectric membrane release
Voltage signal, and judge this time test whether to pass through.Controller 10 controls electromagnet 3 and mass block absorption is got up, and controls
It tests idler wheel 13 to roll, the piezoelectric membrane tested is packed up, while the position of mobile piezoelectric membrane test point, then, control
Device 10 controls electromagnet release mass block 4 again, carries out the test of next test point, successively back and forth, until being completed.
Further, the shape of the mass block 4 in the utility model embodiment 2 or 3 can according to test environment difference into
Row changes, for example, mass block 4 can be cylinder, can also make spheroidal, can also make square or cuboid etc..
The pressure-sensitivity test equipment provided by the utility model embodiment 2 is increasing test accuracy, is improving and survey
While trying efficiency, it can more easily realize automatic test, be greatly improved testing efficiency.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Made any modifications, equivalent replacements, and improvements etc., should be included in the utility model within the spirit and principle of utility model
Protection scope within.
Claims (7)
1. a kind of pressure-sensitivity test equipment characterized by comprising
Bottom plate is tested, for carrying piezoelectric membrane；
Support frame；
Mass block；
Setting tool is set to support frame as described above, and for fixing the mass block, and to be located at the piezoelectricity thin for the mass block
Above film；
Controller, including processor, memory, communication interface and communication bus, the processor, the memory and described logical
Letter interface completes mutual communication by the communication bus, the communication interface respectively with the setting tool and piezoelectricity
Film connection, the memory make processor control institute for storing an at least executable instruction, the executable instruction
Setting tool is stated, and the piezoelectric membrane is tested.
2. pressure-sensitivity test equipment according to claim 1, which is characterized in that the setting tool is electromagnet,
For the mass block to be adsorbed or discharged according to the instruction of controller.
3. pressure-sensitivity test equipment according to claim 1, which is characterized in that the setting tool further includes
Guide rail, for making the mass block fall according to scheduled track.
4. pressure-sensitivity test equipment according to claim 3, which is characterized in that the test backplate surface setting is surveyed
Fixing clamp is tried, for fixing the piezoelectric membrane.
5. pressure-sensitivity test equipment according to claim 3, which is characterized in that support frame as described above further comprises rising
Drop switch, for adjusting the height of support frame as described above.
6. pressure-sensitivity test equipment according to claim 3, which is characterized in that further comprise test idler wheel, institute
Test idler wheel is stated to be connected with the controller and piezoelectric membrane by communication interface.
7. pressure-sensitivity test equipment as claimed in any one of claims 1 to 6, which is characterized in that the mass block is circle
Cylinder or spherosome.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821947082.0U CN209416580U (en) | 2018-11-23 | 2018-11-23 | A kind of pressure-sensitivity test equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821947082.0U CN209416580U (en) | 2018-11-23 | 2018-11-23 | A kind of pressure-sensitivity test equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209416580U true CN209416580U (en) | 2019-09-20 |
Family
ID=67935177
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821947082.0U Active CN209416580U (en) | 2018-11-23 | 2018-11-23 | A kind of pressure-sensitivity test equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209416580U (en) |
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2018
- 2018-11-23 CN CN201821947082.0U patent/CN209416580U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 518000 Guangdong science and technology innovation and Research Institute, Shenzhen, Shenzhen, Nanshan District No. 6, science and technology innovation and Research Institute, Shenzhen, D 10, 1004, 10 Patentee after: Shenzhen Hetai intelligent home appliance controller Co.,Ltd. Address before: 518000 Guangdong science and technology innovation and Research Institute, Shenzhen, Shenzhen, Nanshan District No. 6, science and technology innovation and Research Institute, Shenzhen, D 10, 1004, 10 Patentee before: SHENZHEN H&T DATA RESOURCES AND CLOUD TECHNOLOGY Ltd. |
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| CP01 | Change in the name or title of a patent holder |