CN103150593A - Item photoelectric counting method and device - Google Patents
Item photoelectric counting method and device Download PDFInfo
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- CN103150593A CN103150593A CN201210552819XA CN201210552819A CN103150593A CN 103150593 A CN103150593 A CN 103150593A CN 201210552819X A CN201210552819X A CN 201210552819XA CN 201210552819 A CN201210552819 A CN 201210552819A CN 103150593 A CN103150593 A CN 103150593A
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Abstract
The invention provides an item photoelectric counting method and a device. The method comprises the following steps: 1 emitting a first light ray; 2 receiving a second light ray, and stopping emitting the first light ray after receiving the second light ray; 3 judging whether light rays can be received in a first time interval of stopping emitting the first light ray, if yes, confirming that the second light ray is an interference light ray and not counted; and if no, confirming that the second light ray is a reflection light ray of the first light ray and counting plus one. According to the item photoelectric counting method and the device, an emitting light source in a square-wave form is utilized, light rays which are used for technology are emitted at intervals, and accuracy of the counting is ensured by recognizing whether the received light rays at current are effective light rays or interference light sources.
Description
Technical field
The present invention relates to the photoelectric counting art, but relate in particular to a kind of article photoelectric counting method and device thereof of filtering external interference light source.
Background technology
Photoelectric sensing counting (correlation counting) is waited until widespread use in each field.Its ultimate principle is: photoelectric accounter is provided with an infrared light supply, and face toward the article emission of light of process, after having article to pass through and shelter from this infrared light supply, just can reflect a light, receiver on photoelectric accounter just can be responded to the light that this reflects afterwards, show have article to pass through this moment, and counter is just corresponding adds one.
Yet, in prior art, photoelectric accounter is subject to the interference of extraneous various light sources unavoidably, to such an extent as to, when counting article and not arriving the position of transmitting illuminant, jamming light source is just received by the receiving circuit of photoelectric accounter, thereby mistake is used as " utilizing emitted light " with " jamming light source ", certainly will cause like this counting of photoelectric accounter inaccurate.
Summary of the invention
But the technical matters of solution required for the present invention is to provide a kind of article photoelectric counting method of filtering external interference light source.
Correspondingly, the present invention also provides a kind of article photoelectric accounter of using said method.
For solving the problems of the technologies described above, the technical solution used in the present invention is:
A kind of article photoelectric counting method, it comprises the steps:
S1, emission the first light;
S2, acceptance the second light, and after receiving described the second light, stop launching described the first light;
Whether S3, judgement can receive light stopping launching in the first period of described the first light, if assert that described the second light is to disturb light, does not count; If not, assert that described the second light is the reflection ray of the first light, counting adds one.
As a further improvement on the present invention, described method specifically comprises:
Be configured to described the first light of certain frequency periodic transmission, wherein, in one-period, comprise second period and the first period that stops emission of light of emission of light.
As a further improvement on the present invention, described method also specifically comprises:
Obtain Individual Items from touching the light emission position to breaking away from light emission the 3rd required period of position;
Be set less than described the 3rd period described the first period.
As a further improvement on the present invention, described method also specifically comprises:
From receiving described the second light, definition one equals the 4th period of described the 3rd period;
Within described the 4th period, only make once counting.
As a further improvement on the present invention, described the first light only stops emission in the first period after receiving described the second light, and other period all keeps emission state.
In addition, a kind of article photoelectric accounter, it comprises: one is used for the transmitter module of emission the first light; One is used for accepting the receiver module of the second light; Wherein, this device stops launching described the first light after receiving described the second light; And one disturb judge module, it is used for judgement stopping launching in the first period of described the first light, whether can receive light, if assert that described the second light for disturbing light, do not count; If not, assert that described the second light is the reflection ray of the first light, counting adds one.
As a further improvement on the present invention, described device also is used for: be configured to described the first light of certain frequency periodic transmission, wherein, in one-period, comprise second period and the first period that stops emission of light of emission of light.
As a further improvement on the present invention, described device also is used for: obtain Individual Items from touching the light emission position to breaking away from light emission the 3rd required period of position; Be set less than described the 3rd period described the first period.
As a further improvement on the present invention, described device also is used for: from receiving described the second light, definition one equals the 4th period of described the 3rd period; Within described the 4th period, only make once counting.
As a further improvement on the present invention, described the first light only stops emission in the first period after receiving described the second light, and other period all keeps emission state.
Can find out according to above technical scheme, the present invention utilizes the transmitting illuminant of square wave form, and intermittence ground emission is used for the light of technology, and is effective sunlight or jamming light source by identifying the current light that is received, thereby guarantees the accuracy of counting.
Description of drawings
In order to be illustrated more clearly in the technical scheme of the specific embodiment of the invention or prior art, the below will do to introduce simply to the accompanying drawing of required use in the specific embodiment of the invention or existing the description, apparently, following accompanying drawing is only a part of accompanying drawing of the present invention, for those of ordinary skills, under the prerequisite of not making creative work, can also obtain according to these accompanying drawings other accompanying drawing.
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 used for the oscillogram of the emission of light of counting in an embodiment of the present invention;
Fig. 4 is used for the oscillogram of the emission of light of counting in another embodiment of the present invention;
Fig. 5 is the module diagram of article photoelectric accounter in an embodiment of the present invention.
Embodiment
Describe the present invention below with reference to embodiment shown in the drawings.But these embodiments do not limit the present invention, and based on various embodiments of the present invention, those of ordinary skill in the art all should be included in protection scope of the present invention not making the every other embodiment that obtains under the prerequisite of creative work.
Join shown in Figure 1ly, photoelectric accounter 10 of the present invention is applied to the occasions such as production line, article transport tape, and the article (A, B, C, D, E, F) that flow with certain speed are counted.Photoelectric accounter comprises that MCU, power valve, receiving tube and some peripheral circuits form, wherein, the emission of light 2(that the power valve of photoelectric accounter 10 is launched can be infrared ray) after being sheltered from by article, can reflect a reflection ray 3, and by the perception of the receiving tube of photoelectric accounter 10 inside (optical inductor) institute, after this counter adds one, thereby realizes the article counting function.
Join shown in Figure 2ly, in the embodiment of the invention, described article photoelectric counting method comprises the steps:
S1, emission are used for first light (can be infrared ray) of counting;
S2, acceptance the second light, and after receiving described the second light, stop launching described the first light;
In the present invention, the second light has two kinds of possibilities: the one, and above-mentioned the first light is blocked by article to be counted the reflection ray that back reflection forms, and another kind of possibility is namely jamming light source, comprises indoor bulb, sunshine etc.If this jamming light source is mistakened as makes reflected light, that actual object quantity will be bigger than normal.
Whether S3, judgement can receive light stopping launching in the first period of described the first light, if assert that described the second light is to disturb light, does not count; If not, assert that described the second light is the reflection ray of the first light, counting adds one.
Join shown in Figure 3ly, in first embodiment of the invention, above-mentioned the first light is configured to certain frequency periodic transmission (square wave form), wherein, in one-period t, comprises the t1 period of launching the first light and the t2 period that stops emission of light.
It is enough fast that in the present invention, the transmission frequency of light must arrange, avoiding at the t2 that stops emission of light in the period, has one or more article " to slip away " from the light emission position, causes counting inaccurate (omitting counting).So in present embodiment, the method specifically also comprises the steps:
S4, obtain Individual Items from touching the light emission position to breaking away from the light emission required time (being designated as t4) of position; The t4 of this step can calculate by the travelling speed of test travelling belt and the size of article.
S5, be set less than the described t4 period the described t2 period, to avoid omitting the situation of counting.
In addition, in the present invention, the flowing velocity of supposing article to be counted is not very fast, perhaps the size of article to be counted is enough large, in the situation that the transmission frequency of the first light is enough fast, may cause on same article so, the received situation of Multi reflection light occur.for example, in the emission period t1 in certain cycle, just receive second light that is blocked emission by article C, after this, what enter this cycle stops period t2, the emission period t1 that enters the next emission cycle afterwards, at this moment, if at this t1 in the period, article C still can block the first light of emission, receiving tube just can correspondingly receive the light for the second time that same article fire back so, if so according to effective reflected light counting principle once once, if the reflected light of twice or twice above same object is all effectively talked about, that certainly will need to repeatedly be counted same object, so also cause counting inaccurate.So in the specific embodiment of the invention, said method also specifically comprises the steps:
S6, certainly receiving one section t5 that described the second light starts in the time, only make once counting, wherein, t5=t4.Preferably, above-mentioned " receiving described the second light " must be to be judged as effective sunlight, i.e. the emission of light of the first light, and must be reflected by current article first.
It is worth mentioning that, in other embodiments of the invention, above-mentioned the first light take certain frequency emission might not be as the square wave form, it also can comprise other waveform, and importantly the first light is necessary for the intermittence emission.
Next, shown in please refer to the drawing 4, introduce the second embodiment of emission of light of the present invention.in the present embodiment, the emission of the first light is not to launch with a fixed frequency, it also can be configured in most of the cases be in emission state always, just when receiving tube is sensed the second light (emission of light or be jamming light source), just can trigger the send action that stops of first signal, can be set to definite value and stop launching duration, such as t3, similarly, at this moment in section t3, if the light that receives before still receiving, so just, before can assert, the second light of perception belongs to the external interference light source, otherwise, regard as usable reflection light, and counting adds one.Stopping launching lasting t3 after the period, again return to the lasting emission state of the first light, and wait for the induction of the second light next time.
Shown in please refer to the drawing 5, in the specific embodiment of the invention, a kind of article photoelectric accounter 10 of using said method, it comprises:
One is used for the transmitter module 11 of emission the first light;
One is used for accepting the receiver module 12 of the second light;
Wherein, this device stops launching the first light after receiving the second light;
And, one disturb judge module 13, it is used for judgement and in the period, whether can receives light at the t2 that stops launching the first light, if assert that the second light for disturbing light, do not count; If not, assert that the second light is the reflection ray of the first light, counting adds one.
In some embodiment of the present invention, described device also is used for: be configured to certain frequency periodic transmission the first light, wherein, in one-period t, comprise the t1 period and the t2 period that stops emission of light of emission of light.
In some embodiment of the present invention, described device also is used for: obtain Individual Items from touching the light emission position to breaking away from the light emission required t4 period of position; Be set less than the t4 period t2 period.
In some embodiment of the present invention, described device also is used for: certainly receiving one section t5 that described the second light starts in the time, only make once counting, wherein, t5=t4.Preferably, above-mentioned " receiving described the second light " must be to be judged as effective sunlight, i.e. the emission of light of the first light, and must be reflected by current article first.
In another embodiment of the present invention, the first light only stops emission in the t3 after receiving described the second light, and section all keeps emission state At All Other Times.
It is worth mentioning that concrete ins and outs, concrete function and effect in the relevant embodiment of article photoelectric accounter described herein all with reference to the embodiment of the relevant article photoelectric counting method of above-mentioned record, are not being given unnecessary details this applicant.
To sum up, the present invention utilizes the transmitting illuminant of square wave form, and intermittence ground emission is used for the light of technology, and is effective sunlight or jamming light source by identifying the current light that is received, thereby guarantees the counting accuracy of photoelectric counter.
Be to be understood that, although this instructions is described according to embodiment, but be not that each embodiment only comprises an independently technical scheme, this narrating mode of instructions is only for clarity sake, those skilled in the art should make instructions as a whole, technical scheme in each embodiment also can through appropriate combination, form other embodiments that it will be appreciated by those skilled in the art that.
Above listed a series of detailed description is only illustrating for feasibility embodiment of the present invention; they are not to limit protection scope of the present invention, all disengaging within equivalent embodiment that skill spirit of the present invention does or change all should be included in protection scope of the present invention.
Claims (10)
1. an article photoelectric counting method, is characterized in that, it comprises the steps:
S1, emission the first light;
S2, acceptance the second light, and after receiving described the second light, stop launching described the first light;
Whether S3, judgement can receive light stopping launching in the first period of described the first light, if assert that described the second light is to disturb light, does not count; If not, assert that described the second light is the reflection ray of the first light, counting adds one.
2. method according to claim 1, is characterized in that, described method specifically comprises:
Be configured to described the first light of certain frequency periodic transmission, wherein, in one-period, comprise second period and the first period that stops emission of light of emission of light.
3. method according to claim 2, is characterized in that, described method also specifically comprises:
Obtain Individual Items from touching the light emission position to breaking away from light emission the 3rd required period of position;
Be set less than described the 3rd period described the first period.
4. method according to claim 3, is characterized in that, described method also specifically comprises:
From receiving described the second light, definition one equals the 4th period of described the 3rd period;
Within described the 4th period, only make once counting.
5. method according to claim 1, is characterized in that, described the first light only stops emission in the first period after receiving described the second light, and other period all keeps emission state.
6. an article photoelectric accounter, is characterized in that, it comprises:
The transmitter module that is used for emission the first light;
Be used for accepting the receiver module of the second light;
Wherein, this device stops launching described the first light after receiving described the second light;
And one disturb judge module, it is used for judgement stopping launching in the first period of described the first light, whether can receive light, if assert that described the second light for disturbing light, do not count; If not, assert that described the second light is the reflection ray of the first light, counting adds one.
7. device according to claim 6, is characterized in that, described device also is used for:
Be configured to described the first light of certain frequency periodic transmission, wherein, in one-period, comprise second period and the first period that stops emission of light of emission of light.
8. device according to claim 7, is characterized in that, described device also is used for:
Obtain Individual Items from touching the light emission position to breaking away from light emission the 3rd required period of position;
Be set less than described the 3rd period described the first period.
9. device according to claim 8, is characterized in that, described device also is used for:
From receiving described the second light, definition one equals the 4th period of described the 3rd period;
Within described the 4th period, only make once counting.
10. device according to claim 6, is characterized in that, in this device, described the first light only stops emission in the first period after receiving described the second light, and other period all keeps emission state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210552819.XA CN103150593B (en) | 2012-12-19 | 2012-12-19 | article photoelectric counting method and device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210552819.XA CN103150593B (en) | 2012-12-19 | 2012-12-19 | article photoelectric counting method and device |
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| Publication Number | Publication Date |
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| CN103150593A true CN103150593A (en) | 2013-06-12 |
| CN103150593B CN103150593B (en) | 2016-08-03 |
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| CN201210552819.XA Active CN103150593B (en) | 2012-12-19 | 2012-12-19 | article photoelectric counting method and device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN110214735A (en) * | 2019-05-14 | 2019-09-10 | 郑百成 | A kind of feedstuff feeding device of the sturgeon young |
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| 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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2012
- 2012-12-19 CN CN201210552819.XA patent/CN103150593B/en active Active
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)
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| 杨汉祥等: "红外计数器的设计", 《科技广场》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN110214735A (en) * | 2019-05-14 | 2019-09-10 | 郑百成 | A kind of feedstuff feeding device of the sturgeon young |
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| Publication number | Publication date |
|---|---|
| CN103150593B (en) | 2016-08-03 |
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