CN103150593B - article photoelectric counting method and device - Google Patents
article photoelectric counting method and device Download PDFInfo
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- CN103150593B CN103150593B CN201210552819.XA CN201210552819A CN103150593B CN 103150593 B CN103150593 B CN 103150593B CN 201210552819 A CN201210552819 A CN 201210552819A CN 103150593 B CN103150593 B CN 103150593B
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Abstract
The present invention provides a kind of article photoelectric counting method and device, and described method comprises the steps: S1, launches the first light；S2, accept the second light, and after receiving described second light, stop launching described first light；S3, judge stop launch described first light the first period in, if can accept light, the most then assert described second light for interference light, do not count；If it is not, then assert the reflection light that described second light is the first light, counting adds one.The present invention utilizes the transmitting light source of square, intermittence ground to launch the light for technology, and by identifying that being currently received light is effective sunlight or jamming light source, thus ensure the accuracy of counting.
Description
Technical field
The present invention relates to photoelectric counting art, particularly relate to a kind of article photoelectric counting method filtering external interference light source and device thereof.
Background technology
Photoelectric sensing counting (correlation counting) waits until extensively to apply in each field.Its ultimate principle is: photoelectric accounter is provided with an infrared light supply, and face toward process article launch light, when have article through and after sheltering from this infrared light supply, just a light can be reflected, receptor on photoelectric accounter just can sense this light reflected afterwards, now showing have article to pass through, enumerator adds one the most accordingly.
But, in prior art, photoelectric accounter is disturbed by extraneous various light sources unavoidably, to such an extent as to, when article to be counted do not arrive the position launching light source, jamming light source is just by received by the reception circuit of photoelectric accounter, thus by mistake by " jamming light source " as " transmitting light ", the counting that so certainly will cause photoelectric accounter is inaccurate.
Summary of the invention
Solve the technical problem that needed for the present invention and be to provide a kind of article photoelectric counting method filtering external interference light source.
Correspondingly, the present invention also provide for a kind of should article photoelectric accounter in aforementioned manners.
For solving above-mentioned technical problem, the technical solution used in the present invention is:
A kind of article photoelectric counting method, it comprises the steps:
S1, launch the first light；
S2, accept the second light, and after receiving described second light, stop launching described first light；
S3, judge stop launch described first light the first period in, if can accept light, the most then assert described second light for interference light, do not count；If it is not, then assert the reflection light that described second light is the first light, counting adds one;
Described method also includes:
Configuration is with the first light described in certain frequency periodic transmission, wherein, within a cycle, including launching the second period of light and stopping launching the first period of light；
Obtain Individual Items and launch position to the 3rd period departed from needed for light transmitting position from touching light；
Described first period is set less than described 3rd period；
From receiving described second light, definition one is equal to the 4th period of described 3rd period；
Within described 4th period, only once count.
As a further improvement on the present invention, described first light stops in the first period after receiving described second light launching, and other period all keeps emission state.
Additionally, a kind of article photoelectric accounter, comprising: one for launching the first emission of light module；One for accepting the receiver module of the second light；Wherein, this device, after receiving described second light, stops launching described first light；And one interference judge module, its for judge stop launch described first light the first period in, if can accept light, the most then assert described second light for disturb light, do not count；If it is not, then assert the reflection light that described second light is the first light, counting adds one；
Described device is additionally operable to: configuration is with the first light described in certain frequency periodic transmission, wherein, within a cycle, including launching the second period of light and stopping launching the first period of light；
Described device is additionally operable to: obtains Individual Items from touching light and launches position to the 3rd period departed from needed for light transmitting position；Described first period is set less than described 3rd period；
Described device is additionally operable to: from receiving described second light, and definition one is equal to the 4th period of described 3rd period；Within described 4th period, only once count.
As a further improvement on the present invention, described first light stops in the first period after receiving described second light launching, and other period all keeps emission state.
According to above technical scheme it can be seen that the present invention utilizes the transmitting light source of square, intermittence ground to launch the light for technology, and by identifying that being currently received light is effective sunlight or jamming light source, thus ensure the accuracy of counting.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme of the specific embodiment of the invention or prior art, the accompanying drawing used required in the specific embodiment of the invention or existing description will be briefly described below, apparently, following accompanying drawing is only a part of accompanying drawing of the present invention, for those of ordinary skills, on the premise of not making creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the ultimate principle figure of article photoelectric counting of the present invention；
Fig. 2 is the schematic flow sheet of article photoelectric counting method in an embodiment of the present invention；
Fig. 3 is the oscillogram launching light in an embodiment of the present invention for counting；
Fig. 4 is the oscillogram launching light in another embodiment of the present invention for counting；
Fig. 5 is the module diagram of article photoelectric accounter in an embodiment of the present invention.
Detailed description of the invention
Describe the present invention below with reference to detailed description of the invention shown in the drawings.But these embodiments are not limiting as the present invention, based on various embodiments of the present invention, the every other embodiment that those of ordinary skill in the art is obtained on the premise of not making creative work, should be included in protection scope of the present invention.
Shown in ginseng Fig. 1, the photoelectric accounter 10 of the present invention is applied to the occasion such as production line, article transmission belt, counts the article (A, B, C, D, E, F) flowed with certain speed.Photoelectric accounter includes MCU, transmitting tube, reception pipe and some peripheral circuits composition, wherein, the transmitting light 2(that the transmitting tube of photoelectric accounter 10 is launched can be infrared ray) after being sheltered from by article, a reflection light 3 can be reflected, and by reception pipe (optical inductor) the institute perception within photoelectric accounter 10, hereafter enumerator adds one, thus realizes article counting function.
Shown in ginseng Fig. 2, in the embodiment of the invention, described article photoelectric counting method, comprise the steps:
S1, transmitting are for the first light (can be infrared ray) counted；
S2, accept the second light, and after receiving described second light, stop launching described first light；
In the present invention, the second light has two kinds of probabilities: one is that above-mentioned first light is blocked, by article to be counted, the reflection light that back reflection is formed, and further possibility is i.e. jamming light source, including indoor bulb, sunlight etc..If being mistakened as this jamming light source making reflection light, that actual object quantity will be bigger than normal.
S3, judge stop launch described first light the first period in, if can accept light, the most then assert described second light for interference light, do not count；If it is not, then assert the reflection light that described second light is the first light, counting adds one.
Shown in ginseng Fig. 3, in first embodiment of the invention, above-mentioned first light is configured to certain frequency periodic transmission (square), wherein, in a cycle t, including launching the t1 period of the first light and stopping launching the t2 period of light.
What in the present invention, emission of light frequency must be provided with is sufficiently fast, to avoid in stopping the t2 period launching light, has one or more article to launch position from light and " slips away ", cause counting inaccurate (miss counter).Then, in present embodiment, the method the most also comprises the steps:
S4, acquisition Individual Items launch position to the time (being designated as t4) departed from needed for light transmitting position from touching light；The t4 of this step can be calculated by the size of the speed of service of test conveyer belt and article.
S5, it is set less than the described t4 period, to avoid the situation of miss counter the described t2 period.
Additionally, in the present invention, it is assumed that the flowing velocity of article to be counted is not quickly, or the size of article to be counted is sufficiently large, so in the case of the first emission of light frequency is sufficiently fast, may cause, on same article, the situation that multiple reflections light is received occurring.Such as, in emission period t1 in certain cycle, just receive second light being blocked transmitting by article C, hereafter, enter the stopping period t2 in this cycle, it is emission period t1 entering the next transmitting cycle afterwards, now, if within this t1 period, article C still can block the first light launched, so receive pipe and will be correspondingly received the second time light that same article fire back, if so according to the most effectively reflection light counting principle once, if the reflection light of the same object of twice or more than twice is all effectively, that certainly will need repeatedly to count same object, the most also cause counting inaccurate.Then, in the specific embodiment of the invention, said method also specifically includes following steps:
S6, in certainly receiving the one t5 period that described second light is started at, only once count, wherein, t5=t4.Preferably, above-mentioned " receiving described second light " must be to be judged as effective sunlight, the i.e. first emission of light light, and must be reflected by current item first.
It is noted that in other embodiments of the present invention, above-mentioned the first light with certain frequency transmitting is not necessarily square, and it may also comprise other waveform, it is important that the first light is necessary for what intermittence was launched.
It follows that please join shown in Fig. 4, introduce the second embodiment launching light of the present invention.In the present embodiment, first emission of light is not to launch with a fixed frequency, it may be alternatively configured as in most of the cases being constantly in emission state, simply when receiving pipe and sensing the second light (launch light or be jamming light source), just can trigger the stopping transmitting action of the first signal, and stop launch duration may be configured as definite value, such as t3, similarly, at this moment in section t3, if the light received before still can be received, the most just before can assert, the second light of perception belongs to external interference light source, otherwise, then regard as effectively reflecting light, and counting adds one.After stopping launching the lasting t3 period, it is again restored to the lasting emission state of the first light, and the sensing of the second light that wait is next time.
Please join shown in Fig. 5, in the specific embodiment of the invention, a kind of should article photoelectric accounter 10 in aforementioned manners, comprising:
One for launching the first emission of light module 11；
One for accepting the receiver module 12 of the second light；
Wherein, this device, after receiving the second light, stops launching the first light；
And, one interference judge module 13, its for judge stop launch the first light the t2 period in, if can accept light, the most then assert the second light for disturb light, do not count；If it is not, then assert the reflection light that the second light is the first light, counting adds one.
In some embodiment of the present invention, described device is additionally operable to: configuration is with certain frequency periodic transmission the first light, wherein, in a cycle t, including launching the t1 period of light and stopping launching the t2 period of light.
In some embodiment of the present invention, described device is additionally operable to: obtains Individual Items from touching light and launches position to the t4 period departed from needed for light transmitting position；The t2 period is set less than the t4 period.
In some embodiment of the present invention, described device is additionally operable to: in certainly receiving the one t5 period that described second light is started at, and only once counts, wherein, and t5=t4.Preferably, above-mentioned " receiving described second light " must be to be judged as effective sunlight, the i.e. first emission of light light, and must be reflected by current item first.
In another embodiment of the present invention, the first light stops in the t3 after receiving described second light launching, and section all keeps emission state At All Other Times.
It is noted that described herein about concrete ins and outs, concrete function and the effect in the embodiment of article photoelectric accounter, all with reference to the embodiment of relevant article photoelectric counting method of above-mentioned record, do not repeating this applicant.
To sum up, the present invention utilizes the transmitting light source of square, intermittence ground to launch the light for technology, and by identifying that being currently received light is effective sunlight or jamming light source, thus ensure the count accuracy of photoelectric counter.
It is to be understood that, although this specification is been described by according to embodiment, but the most each embodiment only comprises an independent technical scheme, this narrating mode of description is only for clarity sake, those skilled in the art should be using description as an entirety, technical scheme in each embodiment can also form, through appropriately combined, other embodiments that it will be appreciated by those skilled in the art that.
The a series of detailed description of those listed above is only for illustrating of the feasibility embodiment of the present invention; they also are not used to limit the scope of the invention, and all equivalent implementations or changes made without departing from skill of the present invention spirit should be included within the scope of the present invention.
Claims (4)
1. an article photoelectric counting method, it is characterised in that it comprises the steps:
S1, launch the first light；
S2, accept the second light, and after receiving described second light, stop launching described first light；
S3, judge stop launch described first light the first period in, if can accept light, the most then assert described second light for interference light, do not count；If it is not, then assert the reflection light that described second light is the first light, counting adds one；
Described method also includes:
Configuration is with the first light described in certain frequency periodic transmission, wherein, within a cycle, including launching the second period of light and stopping launching the first period of light；
Obtain Individual Items and launch position to the 3rd period departed from needed for light transmitting position from touching light；
Described first period is set less than described 3rd period；
From receiving described second light, definition one is equal to the 4th period of described 3rd period；
Within described 4th period, only once count.
Method the most according to claim 1, it is characterised in that described first light stops in the first period after receiving described second light launching, and other period all keeps emission state.
3. an article photoelectric accounter, it is characterised in that comprising:
For launching the first emission of light module；
For accepting the receiver module of the second light；
Wherein, this device, after receiving described second light, stops launching described first light；
And one interference judge module, its for judge stop launch described first light the first period in, if can accept light, the most then assert described second light for disturb light, do not count；If it is not, then assert the reflection light that described second light is the first light, counting adds one；
Described device is additionally operable to:
Configuration is with the first light described in certain frequency periodic transmission, wherein, within a cycle, including launching the second period of light and stopping launching the first period of light；
Obtain Individual Items and launch position to the 3rd period departed from needed for light transmitting position from touching light；
Described first period is set less than described 3rd period；
From receiving described second light, definition one is equal to the 4th period of described 3rd period；
Within described 4th period, only once count.
Device the most according to claim 3, it is characterised in that in this device, described first light stops in the first period after receiving described second light launching, and other period all keeps emission state.
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| CN201210552819.XA CN103150593B (en) | 2012-12-19 | 2012-12-19 | article photoelectric counting method and device |
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| CN201210552819.XA CN103150593B (en) | 2012-12-19 | 2012-12-19 | article photoelectric counting method and device |
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| CN103150593A CN103150593A (en) | 2013-06-12 |
| CN103150593B true CN103150593B (en) | 2016-08-03 |
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| CN108875889A (en) * | 2017-05-10 | 2018-11-23 | 鸿富锦精密工业（深圳）有限公司 | The automatic medicine extractor of counting device and the application counting device |
| CN110214735B (en) * | 2019-05-14 | 2021-07-23 | 郑百成 | Sturgeon larva's fodder device of throwing something and feeding |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2679766Y (en) * | 2004-03-04 | 2005-02-16 | 青岛大学 | Photoelectric counter having laser light source |
| CN201166858Y (en) * | 2008-03-26 | 2008-12-17 | 胡光鲁 | Photo-electric laser automatic counter |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2679766Y (en) * | 2004-03-04 | 2005-02-16 | 青岛大学 | Photoelectric counter having laser light source |
| CN201166858Y (en) * | 2008-03-26 | 2008-12-17 | 胡光鲁 | Photo-electric laser automatic counter |
Non-Patent Citations (1)
| Title |
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| 红外计数器的设计;杨汉祥等;《科技广场》;20091229(第07期);187-190 * |
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