CN86204839U - Rebound-measuring instrument for falling ball - Google Patents
Rebound-measuring instrument for falling ball Download PDFInfo
- Publication number
- CN86204839U CN86204839U CN 86204839 CN86204839U CN86204839U CN 86204839 U CN86204839 U CN 86204839U CN 86204839 CN86204839 CN 86204839 CN 86204839 U CN86204839 U CN 86204839U CN 86204839 U CN86204839 U CN 86204839U
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- Prior art keywords
- rebound
- falling
- sensor
- data processing
- falling ball
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Abstract
The utility model discloses an improved rebound-measuring instrument for a falling ball, which is suitable for testing the material rebound rate of the soft foam material, comprising a falling ball mechanism, a pipe with graduations, and a falling ball used for testing. The rebound-measuring instrument is added with an automatic measuring system with a sensor and a measurement amplifier and a data processing device. The utility model can automatically measure the material rebound rate and the rebound height of the soft foam material. The utility model omits the labor of hand computation and visual inspection, and thus, the labor intensity of the experiment personnel is eased, and the measuring accuracy is enhanced.
Description
The utility model relates to a kind of improved falling-rebounding ball analyzer.
The existing falling-rebounding ball instrument that is used to test soft foamed material is to fall mechanism by steel ball, and internal diameter is that the conduit and the sample that have groove on 38 millimeters transparent tube walls are formed.When steel ball is fallen that mechanism discharges and freely drop on the sample upper surface in conduit after upwards during resilience, testing crew is estimated rebound height according to supravasal groove, calculates the ratio of rebound height and height of fall, i.e. rebound degree.The NOPCO falling-rebounding ball instrument that Italy Xi Site (CEAST) company produces just belongs to this pattern.Because the steel ball in the test is moving object, testing crew range estimation instantaneous position is difficult to accomplish accuracy of reading, and human body is easy to fatigue.
Problem in view of above-mentioned prior art existence, task of the present utility model provides a kind of improved falling-rebounding ball analyzer, it can measure the rebound degree of falling-rebounding ball height and soft foamed material automatically, and show test results with numeral, exempted the work of range estimation, hand computation, thereby alleviated the labour intensity of testing crew, improved accuracy of measurement.
The utility model is finished as follows: when making progress resilience when steel ball is freely fallen the sample upper surface from fall mechanism after, when being the sensor of forming by two groups of luminous-light activated elements of △ h through distance, the pulse signal that to produce two time intervals be △ t is delivered to data processing equipment after amplifying shaping relatively.Be provided with time base circuit in the data processing equipment, can calculate the time interval of two pulse signals, according to the program of finishing, data processing equipment is calculated the rebound height and the material rebound degree of falling sphere, and shows with numeral.Three rebound height and material rebound degree all can be stored.
Below with reference to accompanying drawing the utility model is described in further detail.
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is an electrical block diagram of the present utility model.
Fig. 3 is the structural representation of sensor among Fig. 1.
Fig. 4 is the data processing block diagram.
Fig. 5 is the experimental data processing process flow diagram.
As shown in Figure 1, steel ball (1) is placed on and falls in the mechanism (2), and its bottom is height of fall H to the distance of sample (6) upper surface.It is a determined value.According to related standards, the utility model is got H.Be 460 millimeters and 500 millimeters two kinds, select on demand in the test.When pressing the button that falls mechanism (2), steel ball (1) freely falls to the upper surface of sample (6), because sample (6) has certain elasticity, and makes upwards resilience and by sensor (5) of steel ball (1).Two luminotrons as light source (10), (12) and two phototriodes as receiving device (11), (13) are housed on the sensor (5).Luminotron (10), phototriode (11) and luminotron (12), phototriode (13) are formed two groups of transmitter-receivers respectively.When not having steel ball (1) by sensor (5), phototriode (11) and (13) are accepted respectively to be penetrated the infrared light that comes and made phototriode (11), (13) be in conducting state by luminotron (10) and (12).Luminotron (10), (12) and phototriode (11), (13) are installed on the sensor housing, and the distance of two luminotrons and phototriode is △ h.When upwards resilience is by sensor (5) after steel ball (1) freely falls to sample (6) upper surface, owing to be in the light phototriode (11) is ended, undersuing of output on expelling plate, after time through △ t, steel ball is in the light to luminotron (12) phototriode (13) is ended, also undersuing of output on emitter.The time interval is that two undersuings of △ t are input to measuring amplifier (7) respectively send into comparer after amplifying shaping, and relatively the signal after is sent into data processing equipment, is calculated by formula (1) and is shown rebound height H by data processing equipment.
H＝h
1＋ 1/2 △h＋ (（△h)
2)/(2g(△t)
2) ＋ 1/8 g（△t）
2……（1）
In the formula: the rebound height (millimeter) of H-steel ball (1).
h
1-sample (6) upper surface is to the distance (millimeter) of phototriode (11).
Distance (millimeter) between △ h-two phototriodes (or luminotron).
△ t-steel ball is through the time interval (second) of △ h time.
G-acceleration of gravity (9810 mm/second
2).
Because h
1, △ h is set-point, g is a constant, △ t just can be calculated the signal by comparer by data processing equipment (8).Data processing equipment (8) just can calculate H according to formula (1) like this.
So measure three rebound height, calculate rebound degree R by data processing equipment (8) by formula (2) again.
R＝（H
1＋H
2＋H
3）／3H。………（2）
In the formula: H
1-rebound height (millimeter) for the first time.
H
2-rebound height (millimeter) for the second time.
H
3-rebound height (millimeter) for the third time.
H
4-height of fall (millimeter).
Three rebound height H
1, H
2, H
3All can be stored in the data processing equipment (8) with rebound degree R, use very convenient.
When steel ball (1) falls on certainly luminotron (12) and (10) when being in the light, are rejected processing by the undersuing of phototriode (13) and (11) output by data processing equipment (8).
The embodiment of the utility model such as Fig. 1 is as follows:
Height of fall H
0=460 millimeters
Sample (6) upper surface is to the distance h of phototriode (11)
1=29 millimeters.
Between two phototriodes (11), (13) apart from △ h=24.5 millimeter.
The diameter D=16 millimeter of steel ball (1), weight W=16.2 grams.
Luminotron (10), (12) are selected gallium arsenide infraluminescence pipe 2EHF103C for use, and phototriode (11), (13) are selected 3DU2C for use.
Following table is three groups of foam samples are measured displayed value and visual value automatically with data processing equipment a record.
Claims (5)
1, a kind of falling-rebounding ball instrument of forming by steel ball (1), falling sphere mechanism (2), the grass tube (3) that has scale and sample (6), it is characterized in that using sensor (5) as receiving trap, its signal calculates rebound height H and rebound degree R by data processing equipment (8) behind measuring amplifier (7).
2, falling-rebounding ball analyzer according to claim 1, sensor (5) is as transceiver with luminous-photosensitive receiving element.
3, sensor according to claim 2, transceiver are that two groups of luminotrons and the phototriode of △ h formed by spacing distance.
4, according to the described falling-rebounding ball analyzer of claim 1, after the signal that measuring amplifier (7) receives sensor (5) amplified shaping relatively, output time was spaced apart two undersuings of △ t.
5, according to claim 1 and 4, data processing equipment (8) is measured △ t back-pushed-type (1)
H＝k
1＋ 1/2 △h＋ (（△h)
2)/(2g(△t)
2) ＋ 1/8 g（△t）
2………（1）
Calculate rebound height H.By formula (2)
R＝（H
1＋H
2＋H
3）／3H，………（2）
Calculate rebound degree R.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86204839 CN86204839U (en) | 1986-07-11 | 1986-07-11 | Rebound-measuring instrument for falling ball |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86204839 CN86204839U (en) | 1986-07-11 | 1986-07-11 | Rebound-measuring instrument for falling ball |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN86204839U true CN86204839U (en) | 1987-09-16 |
Family
ID=4807802
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 86204839 Ceased CN86204839U (en) | 1986-07-11 | 1986-07-11 | Rebound-measuring instrument for falling ball |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN86204839U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101446513B (en) * | 2008-12-25 | 2010-06-02 | 北京星伟体育用品有限公司 | Ball sliding machine |
| CN101871870A (en) * | 2010-07-14 | 2010-10-27 | 天津市津维电子仪表有限公司 | Semi-automatic steel anvil rating device of resiliometer |
| CN102706797A (en) * | 2012-06-08 | 2012-10-03 | 聊城大学 | Mechanical system of device for measuring rebound rate of football on football playground |
| CN102706798A (en) * | 2012-06-08 | 2012-10-03 | 聊城大学 | Football rebound rate measuring device for football fields |
| CN103267696A (en) * | 2013-05-16 | 2013-08-28 | 国家体育总局体育科学研究所 | Rebound property detector of movement surface course |
| CN103499939A (en) * | 2013-10-09 | 2014-01-08 | 聊城大学 | Football field football rebound rate detecting instrument control system |
| CN109540675A (en) * | 2018-12-14 | 2019-03-29 | 交通运输部公路科学研究所 | A kind of device and method for evaluating and testing falling sphere body localized contact characteristic |
| US11440055B2 (en) | 2020-12-04 | 2022-09-13 | William Vaughn Jenkins | Systems and methods for sorting balls |
-
1986
- 1986-07-11 CN CN 86204839 patent/CN86204839U/en not_active Ceased
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101446513B (en) * | 2008-12-25 | 2010-06-02 | 北京星伟体育用品有限公司 | Ball sliding machine |
| CN101871870A (en) * | 2010-07-14 | 2010-10-27 | 天津市津维电子仪表有限公司 | Semi-automatic steel anvil rating device of resiliometer |
| CN102706797A (en) * | 2012-06-08 | 2012-10-03 | 聊城大学 | Mechanical system of device for measuring rebound rate of football on football playground |
| CN102706798A (en) * | 2012-06-08 | 2012-10-03 | 聊城大学 | Football rebound rate measuring device for football fields |
| CN102706798B (en) * | 2012-06-08 | 2014-02-19 | 聊城大学 | Football rebound rate measuring device for football fields |
| CN103267696A (en) * | 2013-05-16 | 2013-08-28 | 国家体育总局体育科学研究所 | Rebound property detector of movement surface course |
| CN103267696B (en) * | 2013-05-16 | 2015-09-23 | 国家体育总局体育科学研究所 | Rebound property detector of movement surface course |
| CN103499939A (en) * | 2013-10-09 | 2014-01-08 | 聊城大学 | Football field football rebound rate detecting instrument control system |
| CN109540675A (en) * | 2018-12-14 | 2019-03-29 | 交通运输部公路科学研究所 | A kind of device and method for evaluating and testing falling sphere body localized contact characteristic |
| US11440055B2 (en) | 2020-12-04 | 2022-09-13 | William Vaughn Jenkins | Systems and methods for sorting balls |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CE01 | Termination of patent right |