CN101354296A - Fabric three-dimensional pressure simulation test system - Google Patents
Fabric three-dimensional pressure simulation test system Download PDFInfo
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- CN101354296A CN101354296A CNA200810041348XA CN200810041348A CN101354296A CN 101354296 A CN101354296 A CN 101354296A CN A200810041348X A CNA200810041348X A CN A200810041348XA CN 200810041348 A CN200810041348 A CN 200810041348A CN 101354296 A CN101354296 A CN 101354296A
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Abstract
The invention relates to a fabric three-dimensional pressure analog test system which is used for testing the dynamic contact pressure and the pressure attenuation characteristics of fabrics. The measuring principles of the invention refers to measuring dynamic clothing pressure during a process of fabric three-dimensional deformation by a pressing ball embedded with nine highly precise pressure sensors to press against the fabrics; the pressing ball is transmitted by a driving device, which can press against the fabrics for more than several thousand times so as to measure pressure fatigue. A pressure-displacement curve, a pressure-time curve and a pressure attenuation curve of each sensing point are respectively obtained by the processing of a computer. The analog test system of the invention has simple structure and convenient operation and is a testing instrument that can effectively and objectively evaluate fabric pressure performance.
Description
Technical field
The invention belongs to weaving precision measuring instrument technical field, be particularly related to the test macro of a kind of fabric (knitted fabric, woven fabric, non-weaving cloth and compound substance thereof) contact pressure and pressure fatigue properties, be applicable to the test of dynamic contact pressure of fabric and pressure attenuation characteristic.
Background technology
Garment pressure is one of important indicator of estimating pressure suits comfortableness, functional, security.But the research and development of garment pressure testing agency and testing tool lag behind the needs of scientific research far away, also do not have reasonable and unified testing standard.Up to the present, there be not the instrument that be used for fabric pressure test close with the present invention.On the structure approaching analogous instrument as: electronics bursting strength tester, this instrument are mainly used in the bursting performance of test fabric, and main characteristic index is bursting strength, bursting strength, bursting expansion ratio and bursting time.
Existing measuring clothes pressure device is directly sensing element to be inserted between clothes and the human body, measures and by corresponding element demonstration garment pressure value.Sensing element mainly contains air-conduction type, liquid conduction type and resistance-type, its device is respectively air-conduction type, liquid conduction type manometry device and resistance-type garment pressure measurement mechanism, air-conduction type mainly is to use a conduction rubber pocket to be connected air pressure or hydraulic ga(u)ge with liquid conduction type manometry device, rubber pocket is inserted clothes inside directly read air pressure or hydraulic pressure value, reflect the size of garment pressure indirectly.Resistance-type measuring clothes pressure device is the deformation by foil gauge, has changed electric signal output, by detecting change in electric indirect calculation force value.
There is following shortcoming in existing measuring clothes pressure device:
Sensing element all tool have the dimensions and thickness, in some less demanding occasion, as test many aspects such as pressure that health socks, medical bandage produce human body and use comparatively general, and the bigger underwear of retractility and bodice etc., can make the clothes distortion during test, be difficult to accurately measure the pressure of clothes.
2. artifical influence factor is bigger, is difficult to control, the operation more complicated, and the poor reproducibility of test result does not have comparability.
3. can not detect dynamic pressure simultaneously, i.e. pressure under the fabric three-dimensional distortion situation is situation over time.
4. can not the detected pressures fatigue properties, be difficult to pressure to a certain class lining and form relatively objectively test and estimate.
So, test the special proving installation of dynamic fabric pressure performance need, it is the extra distortion that measurement mechanism can not cause fabric, can detect fabric 3 D deformation situation in time, detecting dynamic pressure simultaneously changes, and this device can realize repeatedly coming and going repeating motion, the dynamic fatigue characteristic of test pressure, it is the dynamic attenuation situation of pressure, so that effectively study the relation of fabric physical and mechanical properties and pressure and pressure fatigue properties, help the theoretical research and the experimental verification of garment pressure, and then optimize the organizational structure of fabrics parameter, reach the purpose that pressure is optimized, improve fabric pressure comfort property.
Summary of the invention
Technical matters to be solved by this invention provides a kind of system that is used for fabric pressure and pressure testing fatigue, but the dynamic garment pressure under the test fabric 3 D deformation, and the pressure attenuation feature of fabric under repeated deformation.
The technical solution adopted for the present invention to solve the technical problems is: a kind of fabric three-dimensional pressure simulation test system is provided, comprise bearing, be positioned at the base plate on the bearing, be fixed in the frame on the base plate, base plate center installation chassis in the frame, the chassis is connected with shaft collar by support bar, fixedly connected roof pressure groove on the shaft collar, it is characterized in that: fixed installation has the last clamper and the lower gripper of circular steel supporting plate on the described roof pressure groove, there is a roof pressure ball top of clamper, it is fixed on the central sill of frame by connecting rod, pressure transducer in the roof pressure ball links to each other with computing machine by signal amplifier, computing machine is connected with the roof pressure ball by AC servo drive system, and described computing machine comprises:
Data acquisition and processing module: handle the signal of measuring and change into digital signal input computing machine by pressure transducer by analog to digital converter;
The demonstration of data and image and memory module: data processed information is presented on the computer display, and it is stored in the computing machine;
Printer output module: export by printer prints;
Parameter is provided with and operation control module: the parameter of setting the roof pressure ball, comprise roof pressure ball speed, roof pressure height, effect number of times, according to the parameter value of setting, the control servomotor drives the roof pressure ball according to the speed of setting with the effect number of times and moves up and down at vertical direction.
Described pressure transducer is 9, and its sensitive element evenly disperses to be embedded in roof pressure ball top layer, and the sensing element of pressure transducer is embedded in respectively in the roof pressure ball compressible material, and the outside surface of sensor floats on the compressible material surface of roof pressure ball.
The spherical head of described roof pressure ball (6) is made up of three parts, and internal material is rigid materials such as rigid body rustless steel, and the top layer is compressible materials such as silica gel, and is embedded in the sensing element of the pressure transducer on roof pressure ball top layer.
The described clamper (7,8) that has the circular steel supporting plate, fixing circular steel supporting plate below anchor clamps, the pore size scalable of clamper (between one times of roof pressure ball diameter and two times of roof pressure ball diameters), its minimum diameter is greater than roof pressure ball diameter.
Beneficial effect
1. be embedded in nine pressure transducers on the roof pressure ball, outside surface and ball smooth surface are joined, and can not cause that fabric additionally is out of shape, and when can realize a plurality of sensor, dynamic pressure measurement.
2. the clamper that has the circular steel supporting plate can be written into and take out sample easily, and the steel supporting plate can be convenient retracted, prevents because staying of causing of the gravity of fabric itself.
3. the orange that is embedded with sensor can back and forth move more than 5000 times, and translational speed is adjustable, and each interval time is adjustable, can test the dynamic pressure fatigue properties.
4. mechanism of the present invention is simple, easy to operate, is the testing tool of an effective objective evaluation fabric pressure.
The present invention not only carries out the pressure desired value that accurate experiment and software are finished signals collecting, processing and extraction fabric fast by Digital Control, and easy and simple to handle, cost is low, can be widely used in scientific research institution and factory and estimate the pressure and the pressure fatigue properties of fabric fast, carry out parameters Optimization and quality control.
Description of drawings
Fig. 1 fabric three-dimensional pressure simulation test system structural scheme of mechanism.
Fig. 2 is embedded with the roof pressure ball planimetric map of pressure transducer.
Fig. 3 has the clamper synoptic diagram of circular steel supporting plate.
Fig. 4 collecting sensor signal and numerical control drive system process flow diagram.
Among the figure: 1-bearing 2-base plate 3-frame 4-central sill 5-connecting rod 6-roof pressure ball 7-goes up clamper 8-lower gripper 9-roof pressure groove 10-shaft collar 11-chassis 12-pressure transducer 13-pad 14-circular steel supporting plate
Embodiment
Below in conjunction with specific embodiment, further set forth the present invention.Should be understood that these embodiment only to be used to the present invention is described and be not used in and limit the scope of the invention.Should be understood that in addition those skilled in the art can make various changes or modifications the present invention after the content of having read the present invention's instruction, these equivalent form of values fall within the application's appended claims institute restricted portion equally.
Surface structure of the present invention illustrates that as shown in Figure 1 wherein, mainframe adopts double lead portal frame structure, and the operating space is big, and the dynamometry scope is wide, stable action, reliable.Running part drives synchronous pulley by a cover 400W import AC servo, drives two rhizoid thick sticks by synchronous band again, the back and forth movement of control roof pressure ball.Electronic section is responsible for controlling AC servo driver and is gathered the high-precision sensor data and be sent to Computer Processing.
Nine pressure transducers disperse to be embedded in ball surface (as Fig. 2), and roof pressure ball diameter is 100mm, is 0-500cN according to the test request transducer range, resolution 0.5cN.Sensor thickness 3-5mm, diameter 10-15mm.Roof pressure ball top layer is made of silica gel material, has the elastic performance close with human body skin.The clamper of fabric has circular steel supporting plate (as Fig. 3), and the grey cloth anchor clamps diameter that goes in ring is 200mm.
Collecting sensor signal and numerical control drive system flow process such as Fig. 4, at first carry out the parameter setting by computer interface, the operation AC servo drive system, the fabric of roof pressure repeatedly of ball is decided in control, pressure transducer reaches computing machine with detected pressure signal through signal amplifier, computing machine is finished following function respectively, as data collection and processing module, data recording, storage and output can show pressure---displacement curve, pressure---time curve and the pressure attenuation curve of each sensing point by computer interface.
Computing machine mainly is made up of digital-to-analog conversion card, voltage/frequency frequency converter and AC servo motor.At first start computer driven systems software, carry out instrument self checking, standard zero setting, configure each parameter (comprising roof pressure ball speed, roof pressure height, effect number of times etc.).According to the parameter value of setting, servomotor will move up and down at vertical direction according to driving roof pressure balls such as speed of setting and effect number of times.Form by high-precision pressure sensor, the computing machine that has analog-to-digital conversion card and interface operation, data processing and demonstration and a memory function module.The measuring-signal of sensor changes digital signal input computing machine into by analog to digital converter, finishes signal Processing by data processing module then, data presentation, storage and printout.The interface operation module can be carried out various parameter settings.
Claims (4)
1. fabric three-dimensional pressure simulation test system, comprise bearing (1), be positioned at the base plate (2) on the bearing, be fixed in the frame (3) on the base plate, base plate center installation chassis (11) in the frame (3), chassis (11) is connected with shaft collar (10) by support bar, shaft collar (10) is gone up fixedly connected roof pressure groove (9), it is characterized in that: described roof pressure groove (9) is gone up last clamper (7) and the lower gripper (8) that fixed installation has the circular steel supporting plate, there is a roof pressure ball (6) top of clamper, it is fixed on the central sill (4) of frame (3) by connecting rod (5), pressure transducer in the roof pressure ball (6) links to each other with computing machine by signal amplifier, computing machine is connected with roof pressure ball (6) by AC servo drive system, and described computing machine comprises:
Data acquisition and processing module: handle the signal of measuring and change into digital signal input computing machine by pressure transducer by analog to digital converter;
The demonstration of data and image and memory module: data processed information is presented on the computer display, and it is stored in the computing machine;
Printer output module: export by printer prints;
Parameter is provided with and operation control module: the parameter of setting the roof pressure ball, comprise roof pressure ball speed, roof pressure height, effect number of times, according to the parameter value of setting, the control servomotor drives the roof pressure ball according to the speed of setting with the effect number of times and moves up and down at vertical direction.
2. a kind of fabric three-dimensional pressure simulation test system according to claim 1, it is characterized in that: described pressure transducer is 9, its sensitive element evenly disperses to be embedded in roof pressure ball top layer, the sensing element of pressure transducer is embedded in respectively in the roof pressure ball compressible material, and the outside surface of sensor floats on the compressible material surface of roof pressure ball.
3. a kind of fabric three-dimensional pressure simulation test system according to claim 1, it is characterized in that: the spherical head of described roof pressure ball (6) is made up of three parts, internal material is the rigid body rustless steel, the top layer is a compressible material silica gel, and is embedded in the sensing element of the pressure transducer on roof pressure ball top layer.
4. a kind of fabric three-dimensional pressure simulation test system according to claim 1, it is characterized in that: the described clamper (7,8) that has the circular steel supporting plate, fixing circular steel supporting plate below anchor clamps, the pore size of clamper is adjustable as one times of roof pressure ball diameter and two times of roof pressure ball diameters, and its minimum diameter is greater than roof pressure ball diameter.
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| CN200810041348XA CN101354296B (en) | 2008-08-04 | 2008-08-04 | Fabric three-dimensional pressure simulation test system |
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| CN200810041348XA CN101354296B (en) | 2008-08-04 | 2008-08-04 | Fabric three-dimensional pressure simulation test system |
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| CN101354296B CN101354296B (en) | 2010-09-08 |
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