CN101852602A - Device and method for measuring size of circular object - Google Patents
Device and method for measuring size of circular object Download PDFInfo
- Publication number
- CN101852602A CN101852602A CN200910129193A CN200910129193A CN101852602A CN 101852602 A CN101852602 A CN 101852602A CN 200910129193 A CN200910129193 A CN 200910129193A CN 200910129193 A CN200910129193 A CN 200910129193A CN 101852602 A CN101852602 A CN 101852602A
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- sensor
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- time point
- track
- circular
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- Testing Of Coins (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
The invention discloses a device and a method for measuring the size of a circular object. A first sensor, a second sensor and a third sensor are linearly arranged on a track to measure time points when the object to be measured passes by the first, second and third sensors respectively and calculate the size of the object to be measured according to a distance between the first and second sensors and the distance between the second and third sensors.
Description
Technical field
The present invention relates to a kind of measurement mechanism and method of dimension of object, refer to especially a kind ofly need not carry out the measurement of diameter, only depend on sensor to carry out measuring of time, can under the size requirements of minimum, determine the apparatus and method of size of circular object fast with gage.
Background technology
At present, the existing coin diameter of measuring, it is to install two sensors on the coin roller track that a kind of method is arranged, the record coin successively arrives at the diameter that goes out coin with the time conversion that breaks away from this two sensors, as shown in Figure 4.
Yet the design of this dual sensor, but needing, the stable orbit of length could obtain four required time points and be found the solution.Referring to Fig. 4, if the equivalent chord length that circular object is marked on sensor is C, the spacing of two sensors is U, and then the minimum length demand of stable orbit is: C+U.
Yet, some is tested the coin device and has the dimensions restriction, and the formula that falls on for example a kind of is tested the coin device, and it has the fixedly standard specification of reduced size, because the design of dual sensor needs long stable orbit length, be difficult to usually insert that this size is conditional tests in the coin device.
Therefore be necessary to design a kind of method of minification track, caused inconvenience in the use to solve existing technology, and problem such as range of application is limited.
Summary of the invention
In view of this, fundamental purpose of the present invention is to provide a kind of device three groups of sensors, the demand of stable orbit length can be narrowed down to the sensor arrangement method of " the equivalent chord length " that only need coin (needn't greater than the diameter of coin).
For achieving the above object, technical scheme of the present invention is achieved in that the dimension measuring device of circular object provided by the invention, it comprises track and first, second and third sensor, first, second and third sensor straight line in regular turn is arranged on the track, to measure the pass through time point of first, second and third sensor of object to be measured respectively, between first and second sensor and between second and third sensor spacing distance is arranged respectively.
The present invention also provides a kind of dimension measurement method of circular object, and this method comprises: first, second and third sensor is set on track, wherein the distance between first and second sensor is u
1, and the distance between second and third sensor is u
2
Make described object to be measured on described track, move, and to write down the time point that described object to be measured contacts described first sensor be t
0, the described object to be measured time point that contacts described second sensor is t
1, the described object to be measured time point that contacts described the 3rd sensor is t
2, the described object to be measured time point that leaves described first sensor is t
3With basis
Calculate the chord length that described object to be measured is marked by sensor.
By the dimension measuring device and the method for circular object of the present invention, track length can be dwindled, and can further record the size of continuous input thing.
Description of drawings
Fig. 1 is the embodiments of the invention synoptic diagram;
Fig. 2 A, Fig. 2 B, Fig. 2 C, Fig. 2 D are pass through the in regular turn instrumentation plan of first, second and third sensor of object to be measured; And
Fig. 3 is object speed to be measured and time relation figure;
Fig. 4 is the existing method of measuring coin diameter.
Description of reference numerals
A, B, C object to be measured
S
1The sensing points of first sensor
S
2The sensing points of second sensor
S
3The sensing points of the 3rd sensor
The height of three groups of sensor distance tracks of H
Embodiment
Dimension measuring device and method that the present invention is a kind of circular object in this direction of inquiring into.In order to understand the present invention up hill and dale, detailed step and composition thereof will be proposed in following description.
With reference to shown in Figure 1, the dimension measuring device of the circular object that the present invention proposes is made of smooth track and first, second and third sensor, and wherein the distance between first and second sensor is u
1, the distance between second and third sensor is u
2, and first, second and third sensor is arranged at height H place on the track.Object A to be measured, B, C... roll from left to right with uniform acceleration a (or constant speed, i.e. a=0) in regular turn.The leading edge of each object to be measured will arrive at the sensing points S of first sensor in regular turn
1, second sensor sensing points S
2, the 3rd sensor sensing points S
3Subsequently, the trailing edge of object to be measured will break away from first sensor S
1At these 4 time points record respectively, and be appointed as t respectively
0, t
1, t
2, t
3
Above-mentioned track favours surface level, wherein the level height of first sensor is greater than the level height of second sensor, and the level height of second sensor makes object to be measured roll or slide along this track, whereby with initial velocity v greater than the level height of the 3rd sensor
0The contact first sensor.
With reference to figure 2A, Fig. 2 B, Fig. 2 C shown in Fig. 2 D, when object to be measured contacts first sensor, notes down the time point t of object contact first sensor to be measured
0, shown in Fig. 2 A.Subsequently, when object to be measured contacts second sensor, write down the time point t that object to be measured contacts second sensor
1For convenience of calculation, with above-mentioned t
0Be defined as 0.Therefore, the distance between first and second sensor can be expressed as
Initial velocity v wherein
0Can be expressed as
When object to be measured contacts the 3rd sensor, write down the time point t that object to be measured contacts the 3rd sensor
2, shown in Fig. 2 C.Again according to shown in Figure 3, t
1With t
2Between the top trapezoidal area be (at
1+ at
2) (t
2-t
1)/2=a (t
2+ t
1) (t
2-t
1)/2, and t
1With t
2Between the below rectangular area be v
0(t
2-t
1), wherein the longitudinal axis of Fig. 3 is the pass through speed v of each sensor of object to be measured, and transverse axis is the pass through time point t of each sensor of object to be measured.
Yet according to kinematics and geometry, the distance between second and third sensor is above-mentioned two area sums, and the distance between second and third sensor is u
2=v
0(t
2-t
1)+a (t
2+ t
1) (t
2-t
1)/2=u
1(t
2-t
1)/t
1+ a (t
2-t
1) t
2/ 2.Also can calculate acceleration a=2[u in view of the above
2-u
1(t
2-t
1)/t
1]/t
2(t
2-t
1).
When object to be measured leaves first sensor, note down the time point t that object to be measured leaves first sensor
3, shown in Fig. 2 D.Therefore, relend by above-mentioned v
0Can calculate object to be measured by chord length that sensor marked with a
D
eThe i.e. diameter of determinand spare for this reason, this object to be measured can be coin or other circular pieces.
The dimension measuring device of the circular object that the present invention proposes and the control that method both can be used for the steel ball size also can be used as the Coin selecting of testing the coin machine.Apparently, execution of the present invention is not defined in the specific details that the technician was familiar with of using dimension measuring device and method, and on the other hand, well-known composition or step are not described in the details, with the restriction of avoiding causing the present invention unnecessary.According to the description among the top embodiment, the present invention has many corrections and difference.Therefore need be understood in the scope of its additional claim item, except above-mentioned detailed description, the present invention can also implement widely in other embodiments.Above-mentioned is preferred embodiment of the present invention only, is not in order to limit protection scope of the present invention; Every other changes or modifies not breaking away from the equivalence finished under the disclosed spirit, all should be included in the claim scope of the present invention.
Claims (11)
1. the dimension measuring device of a circular object is characterized in that, it comprises:
Track; And
First, second and third sensor; Described first, second and third sensor of time point in the time of can measuring object conduct to be measured respectively in regular turn straight line configuration on described track, between described first and second sensor and between described second and third sensor spacing distance is arranged respectively, and according to the distance between described first and second sensor and described second and third sensor, the size that computing must this object to be measured.
2. the dimension measuring device of circular object according to claim 1 is characterized in that, described object size to be measured is a basis
Computing and getting, wherein D
eThe chord length, the t that are marked by described sensor along described orbital path direction for described object to be measured
1Contact time point, the t of described second sensor for described object to be measured
2Contact time point, the t of described the 3rd sensor for described object to be measured
3Leave time point, the u of described first sensor for described object to be measured
1Be distance, the u between described first and second sensor
2Be the distance between described second and third sensor.
3. the dimension measuring device of circular object according to claim 2 is characterized in that, the time point that described object to be measured contacts described first sensor is defined as 0.
4. the dimension measuring device of circular object according to claim 1, it is characterized in that, the described track that can make described object to be measured roll or slide favours surface level, the level height of wherein said first sensor is greater than the level height of described second sensor, and the level height of described second sensor is greater than the level height of described the 3rd sensor, and described object to be measured is with initial velocity v
0Contact described first sensor.
5. the dimension measuring device of circular object according to claim 2 is characterized in that, the described chord length that is marked by sensor is the diameter of described object to be measured, and this object to be measured is a coin.
6. the dimension measurement device of circular object according to claim 1 is characterized in that, described object to be measured moves on described track with constant speed or uniform acceleration, and described first, second and third sensor places described track top.
7. the dimension measurement method of a circular object is characterized in that, comprises:
First, second and third sensor is set on track, the distance between wherein said first and second sensor is u
1, and the distance between described second and third sensor is u
2
Make object to be measured on described track, move, and to write down the time point that described object to be measured contacts described first sensor be t
0, the described object to be measured time point that contacts described second sensor is t
1, the described object to be measured time point that contacts described the 3rd sensor is t
2, the described object to be measured time point that leaves described first sensor is t
3With basis
Calculate the chord length that described object to be measured is marked by described sensor.
8. the dimension measurement method of circular object according to claim 7 is characterized in that, described object to be measured contacts the time point t of described first sensor
0Be defined as 0.
9. the dimension measurement method of circular object according to claim 7, it is characterized in that, the described track that can make described object to be measured roll or slide favours surface level, the level height of wherein said first sensor is greater than the level height of described second sensor, and the level height of described second sensor is greater than the level height of described the 3rd sensor, and described object to be measured is with initial velocity v
0Contact described first sensor.
10. the dimension measurement method of circular object according to claim 7 is characterized in that, the described chord length that is marked by sensor is the diameter of described object to be measured, and this object to be measured is a coin.
11. the dimension measurement method of circular object according to claim 7 is characterized in that, described object to be measured moves on described track with constant speed or uniform acceleration, and described first, second and third sensor places described track top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910129193A CN101852602A (en) | 2009-03-31 | 2009-03-31 | Device and method for measuring size of circular object |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910129193A CN101852602A (en) | 2009-03-31 | 2009-03-31 | Device and method for measuring size of circular object |
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| Publication Number | Publication Date |
|---|---|
| CN101852602A true CN101852602A (en) | 2010-10-06 |
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ID=42804201
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|---|---|---|---|
| CN200910129193A Pending CN101852602A (en) | 2009-03-31 | 2009-03-31 | Device and method for measuring size of circular object |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105437261A (en) * | 2016-01-04 | 2016-03-30 | 杭州亚美利嘉科技有限公司 | Early warning method and device for tire wear of robot |
| CN105830127A (en) * | 2013-12-19 | 2016-08-03 | 挪佛麦迪哥股份公司 | Coin processing device and corresponding method for classifying coins |
| CN107941159A (en) * | 2017-12-18 | 2018-04-20 | 长春工业大学 | A kind of electronic type spherical parts apparatus for detecting diameter and method |
| CN116026265A (en) * | 2023-03-28 | 2023-04-28 | 沈阳强航时代精密科技有限公司 | Method for detecting low-pressure turbine blade sawtooth type blade crowns on three-coordinate measuring machine |
-
2009
- 2009-03-31 CN CN200910129193A patent/CN101852602A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105830127A (en) * | 2013-12-19 | 2016-08-03 | 挪佛麦迪哥股份公司 | Coin processing device and corresponding method for classifying coins |
| CN105830127B (en) * | 2013-12-19 | 2019-03-12 | 挪佛麦迪哥股份公司 | Coin processor and the correlation technique classified to coin |
| CN105437261A (en) * | 2016-01-04 | 2016-03-30 | 杭州亚美利嘉科技有限公司 | Early warning method and device for tire wear of robot |
| CN105437261B (en) * | 2016-01-04 | 2017-09-22 | 杭州亚美利嘉科技有限公司 | Robot tire wear method for early warning and device |
| CN107941159A (en) * | 2017-12-18 | 2018-04-20 | 长春工业大学 | A kind of electronic type spherical parts apparatus for detecting diameter and method |
| CN116026265A (en) * | 2023-03-28 | 2023-04-28 | 沈阳强航时代精密科技有限公司 | Method for detecting low-pressure turbine blade sawtooth type blade crowns on three-coordinate measuring machine |
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Open date: 20101006 |