CN111983712B - Anti-interference material detection method - Google Patents
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- CN111983712B CN111983712B CN202010848152.2A CN202010848152A CN111983712B CN 111983712 B CN111983712 B CN 111983712B CN 202010848152 A CN202010848152 A CN 202010848152A CN 111983712 B CN111983712 B CN 111983712B
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- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V8/00—Prospecting or detecting by optical means
- G01V8/10—Detecting, e.g. by using light barriers
- G01V8/20—Detecting, e.g. by using light barriers using multiple transmitters or receivers
Abstract
The invention relates to an anti-interference material detection method, which comprises the steps that a light wave emitter emits detection light waves to obtain a first receiving signal received by a first light wave receiver and a second receiving signal received by a second light wave receiver, and further, a judgment result is input according to the first receiving signal, the second receiving signal and a preset material in-out judgment rule; therefore, whether the materials are stored or not is rapidly determined, and meanwhile, the accuracy of material detection is greatly improved.
Description
The application is a patent with the following patent application numbers: 201910446050.5, respectively; the application date is 2019, 5 and 27; the invention provides an anti-interference material detection method and a divisional application of the system.
Technical Field
The invention relates to the technical field of material detection, in particular to an anti-interference material detection method.
Background
In order to improve the management efficiency of material in and out of the warehouse, many enterprises have replaced the former manual registration mode with an automatic detection system. In the SMT industry, the specific operation of an automated inspection system is as follows: the light wave transmitter sends out the detection light wave, and the detection light wave can take place the decay in the transmission process, through averaging the light wave wavelength that light wave receiver received in certain time quantum, and then compare average value and predetermined limited range, if the average value has exceeded limited range, judge that light wave receiver has been sheltered from by the material, show that the material got into at this moment, otherwise if the average value resumes limited range, judge that light wave receiver is not sheltered from by the material, show that there is not the material this moment. However, in this method, the light wave transmitter and the light wave receiver are arranged one-to-one, i.e. a set of light wave receivers for comparison is not additionally arranged, so that when the average value exceeds a limited range, it cannot be determined whether the change is caused by the entering of the material or caused by the intensity of light, temperature or other human factors, and the entering and exiting of the material are easily misjudged.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide an anti-interference material detection method and an anti-interference material detection system, aiming at the above-mentioned defects in the prior art.
The technical scheme adopted by the invention for solving the technical problems is as follows:
on one hand, an anti-interference material detection method is provided, wherein the anti-interference material detection method comprises a light wave transmitter with a surface light source for transmitting detection light waves to penetrate through the edge of a light-transmitting material tray, a first light wave receiver and a second light wave receiver serving as a comparison group of the first light wave receiver; the first light wave receiver receives detection light waves penetrating through the edge of the light-transmitting material tray; the second light wave receiver receives detection light waves which penetrate or do not penetrate through the light-transmitting material tray; characterized in that the method comprises the following steps:
the light wave emitter emits detection light waves;
acquiring a first receiving signal received by a first optical wave receiver and a second receiving signal received by a second optical wave receiver;
and inputting a judgment result according to the first receiving signal, the second receiving signal and a preset material in-out judgment rule.
On the other hand, an anti-interference material detection system is provided, which is based on the method, and comprises a processor, a light wave transmitter, a first light wave receiver and a second light wave receiver; the light wave transmitter, the first light wave receiver and the second light wave receiver are all electrically connected with the processor;
the light wave emitter is used for emitting detection light waves;
the processor is used for acquiring a first receiving signal received by the first light wave receiver and a second receiving signal received by the second light wave receiver, and inputting a judgment result according to the first receiving signal, the second receiving signal and a preset material in-out judgment rule.
The invention has the beneficial effects that: according to the embodiment of the invention, the detection light wave is transmitted by the light wave transmitter to obtain the first receiving signal received by the first light wave receiver and the second receiving signal received by the second light wave receiver, and the judgment result is input according to the first receiving signal, the second receiving signal and the preset material in-out judgment rule, so that whether the material is stored or not is quickly determined, and meanwhile, the accuracy of material detection is greatly improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention will be further described with reference to the accompanying drawings and embodiments, wherein the drawings in the following description are only part of the embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without inventive efforts according to the accompanying drawings:
fig. 1 is a flowchart of an implementation of an anti-interference material detection method according to a first embodiment of the present invention;
fig. 2 is a schematic operation diagram of an anti-interference material detection method according to a second embodiment of the present invention;
fig. 3 is a schematic diagram of an operation of an anti-interference material detection method according to a second embodiment of the present invention (the dotted line represents a detection light wave);
fig. 4 is a schematic operation diagram (the dotted line represents the detection light wave) of an anti-interference material detection method according to the second embodiment of the present invention;
fig. 5 is a schematic operation diagram of an anti-interference material detection method according to a second embodiment of the present invention;
fig. 6 is a schematic operation diagram of an anti-interference material detection method according to a second embodiment of the present invention;
fig. 7 is a schematic operation diagram of an anti-interference material detection method according to a third embodiment of the present invention;
fig. 8 is a schematic operation diagram of an anti-interference material detection method according to a third embodiment of the present invention;
fig. 9 is a schematic operation diagram of an anti-interference material detection method according to a third embodiment of the present invention;
fig. 10 is a schematic operation diagram of an anti-interference material detection method according to a third embodiment of the present invention;
fig. 11 is a schematic structural diagram of an anti-interference material detection system according to a fourth embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without inventive step, are within the scope of the present invention.
Example one
The invention embodiment one provides an anti-interference material detection method, including having the area light source to launch the light wave launcher, first light wave receiver that the detection light wave penetrates the edge of the light-transmitting tray, and the second light wave receiver as the first light wave receiver contrast group, the first light wave receiver receives the detection light wave penetrating the edge of the light-transmitting tray, the second light wave receiver receives the detection light wave penetrating or not penetrating the light-transmitting tray, on the one hand, the above arrangement can utilize the divergence characteristic of the area light source, let a plurality of light wave receivers all receive the detection light wave, therefore only need to set up a light wave launcher while using, have reduced difficulty in installation and use cost; on the other hand, let the edge that detects the light wave and pierce through light-transmitting charging tray can improve the accuracy that the material detected by a wide margin, because current light-transmitting charging tray has dug logical groove so that the user observes the surplus condition in charging tray material area on the disk body more, if not injectd the penetrating position, when the surplus material is not too much on the charging tray, detect the light wave if directly pass from leading to the groove, the condition that the erroneous judgement will appear.
The specific steps of the detection method are shown in fig. 1, and comprise:
step S101: the light wave emitter emits a detection light wave.
The embodiment of the invention is suitable for detecting the SMT light-transmitting tray, the attenuation of different degrees can be generated when the detected light wave is influenced by air factors or temperature factors or light-transmitting tray shielding factors or other human factors in the transmission process, and the specific attenuation condition can be known through signals received by the receiver. By adopting the light wave detection, the influence on the light-transmitting material tray is small, and the light-transmitting material tray cannot be damaged.
Step S102: and acquiring a first receiving signal received by the first optical wave receiver and a second receiving signal received by the second optical wave receiver.
In the embodiment of the invention, the first light wave receiver and the second light wave receiver are of the same type, namely the types of the received signals of the first light wave receiver and the second light wave receiver are the same, the specific type of the received signals can be illumination intensity or light wave wavelength or light wave frequency, and a conversion step of converting heterogeneous data into the same type of data is not needed in the subsequent data comparison, so that the comparison is more convenient.
Step S103: and inputting a judgment result according to the first receiving signal, the second receiving signal and a preset material in-out judgment rule.
The embodiment of the invention is influenced by different factors, and the attenuation degrees of the detection light waves are different. Specifically, when the air is relatively turbid or the temperature changes, the detection light waves are correspondingly attenuated, but the detection light waves are always transmitted in the air, so the attenuation degree is relatively small; when the light-transmitting tray is shielded, the detection light waves can be received by the first light-wave receiver only after passing through air, namely air, solid (light-transmitting tray), and compared with attenuation caused by change of the environmental factors, the attenuation degree of the light-transmitting tray under shielding is very large, so that the judgment result can be input through the first receiving signal, the second receiving signal and a preset material in-and-out judgment rule.
According to the embodiment of the invention, the detection light wave is transmitted by the light wave transmitter to obtain the first receiving signal received by the first light wave receiver and the second receiving signal received by the second light wave receiver, and the judgment result is input according to the first receiving signal, the second receiving signal and the preset material in-out judgment rule, so that whether the material is stored or not is quickly determined, and meanwhile, the accuracy of material detection is greatly improved.
Example two
The second embodiment of the invention provides an anti-interference material detection method, which comprises a light wave transmitter 20 with a surface light source for transmitting detection light waves to penetrate through the edge of a light transmission tray 1, a first light wave receiver 21 and a second light wave receiver 22 serving as a comparison group of the first light wave receiver 21; the first light wave receiver 21 receives the detection light wave penetrating through the edge of the light-transmitting tray 1; the second light wave receiver 22 receives the detection light waves which penetrate or do not penetrate through the light-transmitting tray 1; the method comprises the following specific steps:
step S201: the light wave emitter emits a detection light wave.
Step S202: and acquiring a first receiving signal received by the first optical wave receiver and a second receiving signal received by the second optical wave receiver.
Step S203: and inputting a judgment result according to the first receiving signal, the second receiving signal and a preset material in-out judgment rule.
In the embodiment of the present invention, the parts of steps S201 to S203 that are the same as the parts of steps S101 to S103 in the first embodiment are not described herein again, but the differences are:
preferably, the second optical wave receiver receives the detection optical wave penetrating through the light-transmitting tray, that is, in the case of materials, the detection optical waves received by the second optical wave receiver and the first optical wave receiver both pass through a gas-solid-gas propagation path, and the attenuation degrees are substantially the same, so that the detection optical wave reaching the first optical wave receiver and the detection optical wave reaching the second optical wave receiver are ensured to be comparable; furthermore, the first light wave receiver and the second light wave receiver have different sensitive wave bands, namely when the same detection light wave is received, the light wave wavelength received by the first light wave receiver is different from the light wave wavelength received by the second light wave receiver, so that the normal indication value of the first light wave receiver and the second light wave receiver can be obtained under the condition of no material.
Preferably, when acquiring the first receiving signal received by the first optical wave receiver and the second receiving signal received by the second optical wave receiver, the first optical wave wavelength signal received by the first optical wave receiver and the second optical wave wavelength signal received by the second optical wave receiver are acquired; further, when a judgment result is input according to the first receiving signal, the second receiving signal and a preset material in-out judgment rule, if a first wavelength value associated with the first optical wavelength signal is smaller than a first preset standard value and a second wavelength value associated with the second optical wavelength signal is smaller than a second preset standard value, the material is judged to enter, and if not, no material enters.
As an example, the preset parameters: the sensitive wave band of the first optical wave receiver is 110-; the detected wavelength values are as follows:
1. the first wavelength value is not less than the first preset standard value, the second wavelength value is not less than the second preset standard value, specifically, if the detected first wavelength value is 115nm and the detected second wavelength value is 185nm, it is determined that no material exists at this time;
2. the first wavelength value is not less than the first preset standard value, the second wavelength value is less than the second preset standard value, and specifically, if the detected first wavelength value is 110-;
3. the first wavelength value is smaller than a first preset standard value, the second wavelength value is not smaller than a second preset standard value, and concretely, if the detected first wavelength value is 80-95nm and the detected second wavelength value is 175-190nm, it is determined that no material exists at the moment;
4. the first wavelength value is smaller than a first preset standard value, the second wavelength value is smaller than a second preset standard value, and specifically, if the detected first wavelength value is 80-95nm and the detected second wavelength value is 150-165nm, it is determined that the material is present at the moment.
When the installation positions of the first light wave receiver and the second light wave receiver are set, the first light wave receiver and the second light wave receiver are required to receive the detection light waves penetrating through the light-transmitting material disc, the installation modes meeting the requirements are feasible, and four installation modes are provided as follows:
example a 1: as shown in fig. 2 and 3, the light wave transmitter 20 transmits the detection light wave in the forward direction, and the first light wave receiver 21 and the second light wave receiver 22 are located on the same vertical plane and have the same height, so that the first light wave receiver 21 and the second light wave receiver 22 can both receive the detection light wave without being blocked by each other; the distance between the receiving end of the first optical receiver 21 and the transmitting end of the optical transmitter 20 is different from the distance between the receiving end of the second optical receiver 22 and the transmitting end of the optical transmitter 20, so that the distance between the first optical receiver 21 and the second optical receiver 22 is smaller and the environmental conditions are more similar.
Example a 2: as shown in fig. 4, the lightwave emitter 20 emits a detection lightwave in a forward direction; the first light wave receiver 21 and the second light wave receiver 22 are located on the same vertical plane, and the heights of the first light wave receiver 21 and the second light wave receiver 22 are different, so that the first light wave receiver 21 and the second light wave receiver 22 can receive the detection light waves without being shielded by each other; the distance between the receiving end of the first optical receiver 21 and the transmitting end of the optical transmitter 20 is different from the distance between the receiving end of the second optical receiver 22 and the transmitting end of the optical transmitter 20, so that the distance between the first optical receiver 21 and the second optical receiver 22 is smaller and the environmental conditions are more similar.
Example a 3: as shown in fig. 5, the light wave transmitter 20 emits the detection light wave obliquely upward or downward, the light wave transmitter 20 emits the detection light wave toward the edge of the light-transmitting tray, the intensity of the light wave is greater, the energy is more concentrated, and the first light wave receiver 21 and the second light wave receiver 22 are more convenient to receive; the first optical receiver 21 and the second optical receiver 22 are located on the same vertical plane, and the heights of the first optical receiver 21 and the second optical receiver 22 are different, so that the first optical receiver 21 and the second optical receiver 22 can receive the detection optical waves without being blocked by each other.
Example a 4: as shown in fig. 6, the light wave transmitter 20 emits the detection light wave obliquely upward or downward; the first light wave receiver 21 and the second light wave receiver 22 are not on the same vertical plane, and the heights of the first light wave receiver 21 and the second light wave receiver 22 are different, and the distance from the receiving end of the first light wave receiver 21 to the transmitting end of the light wave transmitter 20 is equal to the distance from the receiving end of the second light wave receiver 22 to the transmitting end of the light wave transmitter 20; the area source has the divergence characteristic, and outer lane light propagation path can be greater than inner circle light propagation path promptly, and the path is longer, and the decay also can be more, therefore the equidistance sets up more to be favorable to guaranteeing to reach the detection light wave of first light wave receiver and reach the detection light wave of second light wave receiver and be little, has further improved the accuracy that detects.
According to the embodiment of the invention, the detection light wave is transmitted by the light wave transmitter to obtain the first receiving signal received by the first light wave receiver and the second receiving signal received by the second light wave receiver, and the judgment result is input according to the first receiving signal, the second receiving signal and the preset material in-out judgment rule, so that whether the material is stored or not is quickly determined, and meanwhile, the accuracy of material detection is greatly improved.
EXAMPLE III
The third embodiment of the invention provides an anti-interference material detection method, which comprises a light wave transmitter 20 with a surface light source for transmitting detection light waves to penetrate through the edge of a light transmission tray 1, a first light wave receiver 21 and a second light wave receiver 22 serving as a comparison group of the first light wave receiver 21; the first light wave receiver 21 receives the detection light wave penetrating through the edge of the light-transmitting tray 1; the second light wave receiver 22 receives the detection light waves which penetrate or do not penetrate through the light-transmitting tray 1; the method comprises the following specific steps:
step S301: the light wave emitter emits a detection light wave.
Step S302: and acquiring a first receiving signal received by the first optical wave receiver and a second receiving signal received by the second optical wave receiver.
Step S303: and inputting a judgment result according to the first receiving signal, the second receiving signal and a preset material in-out judgment rule.
In the embodiment of the present invention, the parts of steps S301 to S303 that are the same as the parts of steps S101 to S103 in the first embodiment are not described herein again, but the differences are:
preferably, the second optical wave receiver receives the detection optical wave which does not pass through the light-transmitting tray, that is, in the case of no material, the detection optical waves received by the second optical wave receiver and the first optical wave receiver are only transmitted in the gas, and in the case of material, the detection optical wave received by the second optical wave receiver is still only transmitted in the gas, while the detection optical wave received by the first optical wave receiver is subjected to a transmission path of gas-solid-gas, so that in the case of no material, the attenuation degree of the detection optical wave reaching the two receivers is not different, and in the case of material, the attenuation degree is greatly different. Furthermore, the first light wave receiver and the second light wave receiver have the same sensitive wave band, that is, when the same detection light wave is received, the light wave wavelength received by the first light wave receiver by a large margin is the same as the light wave wavelength received by the second light wave receiver by a large margin, so that the indication value of the second light wave receiver has a good contrast effect.
Preferably, when acquiring the first receiving signal received by the first optical wave receiver and the second receiving signal received by the second optical wave receiver, the first optical wave wavelength signal received by the first optical wave receiver and the second optical wave wavelength signal received by the second optical wave receiver are acquired;
further, when a judgment result is input according to the first receiving signal, the second receiving signal and a preset material in-out judgment rule, if the first wavelength value associated with the first optical wavelength signal is smaller than a third preset standard value and the second wavelength value associated with the second optical wavelength signal is not smaller than the third preset standard value, the material is judged to enter, and if not, no material enters.
As an example, the preset parameters: the sensitive wave bands of the first light wave receiver and the second light wave receiver are both 130-180nm, and the preset standard value is 115nm, wherein the influence of environmental factors is considered, so that the preset standard value is smaller than the minimum value of the sensitive wave bands during setting, and the attenuation amplitude caused by interference of non-material shielding factors is reserved; the detected wavelength values are as follows:
1. the first wavelength value is not less than the preset standard value, the second wavelength value is not less than the preset standard value, and specifically, if the detected first wavelength value is 140nm and the detected second wavelength value is 135nm, it is determined that no material exists at this time;
2. the first wavelength value is smaller than a first preset standard value, the second wavelength value is not smaller than a second preset standard value, and specifically, if the detected first wavelength value is 110nm and the detected second wavelength value is 118nm, it is determined that there is material;
3. the first wavelength value is smaller than a first preset standard value, the second wavelength value is smaller than a second preset standard value, and specifically, if the detected first wavelength value is 95-118nm and the detected second wavelength value is 100-110nm, it is determined that no material exists at the moment; because the material can only shield the first light wave receiver under normal conditions, and the detection result shows that the second light wave receiver is also shielded, other articles with large sizes can be mixed or the second light wave receiver is shielded by other objects, which belong to abnormal conditions;
4. the first wavelength value is not less than the first predetermined standard value, the second wavelength value is less than the second predetermined standard value, and specifically, if the detected first wavelength value is 140nm and the detected second wavelength value is 100nm, it is determined that there is no material, and the material placement position may be confused or the second optical receiver may be blocked by other objects, which are all abnormal situations.
When the installation positions of the first light wave receiver and the second light wave receiver are set, the first light wave receiver is required to receive the detection light waves penetrating through the light transmission material disc, the second light wave receiver cannot receive the detection light waves penetrating through the light transmission material disc, the installation form meeting the requirements is feasible, and four installation distribution modes are provided as follows:
example B1: as shown in fig. 7, either the middle upper part of the light transmission tray 1 or the middle lower part of the light transmission tray 1 is opposite to the light wave emitter 20; the light wave emitter 20 emits a detection light wave in a forward direction; the first light wave receiver 21 and the second light wave receiver 22 are positioned on the same vertical plane, and the heights of the first light wave receiver and the second light wave receiver are different; the distance between the receiving end of the first light wave receiver 21 and the transmitting end of the light wave transmitter 20 is equal to the distance between the receiving end of the second light wave receiver 22 and the transmitting end of the light wave transmitter 20; the equidistant arrangement is more favorable for ensuring that the detection light wave reaching the first light wave receiver and the detection light wave reaching the second light wave receiver are not different, and the detection accuracy is further improved.
Example B2: as shown in fig. 8, either the middle upper part of the light transmission tray 1 or the middle lower part of the light transmission tray 1 is opposite to the light wave emitter 20; the light wave emitter 20 emits a detection light wave in a forward direction; the first light wave receiver 21 and the second light wave receiver 22 are positioned on the same vertical plane and have the same height; the distance between the first light wave receiver receiving end and the light wave transmitter transmitting end is equal to the distance between the second light wave receiver receiving end and the light wave transmitter transmitting end, and the equal distance is more favorable for ensuring that the detection light wave reaching the first light wave receiver and the detection light wave reaching the second light wave receiver are not different, so that the detection accuracy is further improved.
Example B3: as shown in fig. 9, the light wave emitter 20 is opposite to the middle of the light transmission tray 1, and emits the detection light wave obliquely upwards or downwards; the first light wave receiver 21 and the second light wave receiver 22 are not on the same vertical plane, and the heights of the first light wave receiver 21 and the second light wave receiver are different, and the distance between the receiving end of the first light wave receiver and the transmitting end of the light wave transmitter is equal to the distance between the receiving end of the second light wave receiver and the transmitting end of the light wave transmitter; the equidistant arrangement is more favorable for ensuring that the detection light wave reaching the first light wave receiver and the detection light wave reaching the second light wave receiver are not different, and the detection accuracy is further improved.
Example B4: as shown in fig. 10, the light wave emitter 20 is opposite to the edge of the light transmission tray 1, and emits the detection light wave obliquely upwards or downwards; the first light wave receiver 21 and the second light wave receiver 22 are on the same vertical plane and have the same height; the distance between the receiving end of the first light wave receiver 21 and the transmitting end of the light wave transmitter 20 is equal to the distance between the receiving end of the second light wave receiver 22 and the transmitting end of the light wave transmitter 20, and the arrangement of the equal distances is more favorable for ensuring that the detection light waves reaching the first light wave receiver and the detection light waves reaching the second light wave receiver are not different, so that the detection accuracy is further improved.
According to the embodiment of the invention, the detection light wave is transmitted by the light wave transmitter to obtain the first receiving signal received by the first light wave receiver and the second receiving signal received by the second light wave receiver, and the judgment result is input according to the first receiving signal, the second receiving signal and the preset material in-out judgment rule, so that whether the material is stored or not is quickly determined, and meanwhile, the accuracy of material detection is greatly improved.
Example four
Based on the material detection method, as shown in fig. 11, the system includes a processor 30, a light wave transmitter 31, a first light wave receiver 32, and a second light wave receiver 33; the light wave transmitter, the first light wave receiver and the second light wave receiver are electrically connected with the processor;
the light wave emitter is used for emitting detection light waves; the processor is used for acquiring a first receiving signal received by the first light wave receiver and a second receiving signal received by the second light wave receiver, and is also used for inputting a judgment result according to the first receiving signal, the second receiving signal and a preset material in-out judgment rule.
It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims.
Claims (2)
1. An anti-interference material detection method is characterized by comprising a light wave transmitter, a first light wave receiver and a second light wave receiver, wherein the light wave transmitter is provided with a surface light source for transmitting detection light waves to penetrate through the edge of a light-transmitting material tray; the first light wave receiver receives detection light waves penetrating through the edge of the light-transmitting material tray; the second light wave receiver receives detection light waves which do not penetrate through the light-transmitting material tray; characterized in that the method comprises the following steps:
the light wave emitter emits detection light waves;
acquiring a first receiving signal received by a first optical wave receiver and a second receiving signal received by a second optical wave receiver;
inputting a judgment result according to the first receiving signal, the second receiving signal and a preset material in-out judgment rule;
the sensitive wave bands of the first optical wave receiver and the second optical wave receiver are the same;
the step of acquiring a first receiving signal received by the first optical wave receiver and a second receiving signal received by the second optical wave receiver includes:
acquiring a first lightwave wavelength signal received by a first lightwave receiver and a second lightwave wavelength signal received by a second lightwave receiver;
inputting a judgment result according to the first receiving signal, the second receiving signal and a preset material in-out judgment rule, wherein the step comprises the following steps:
if the first wavelength value associated with the first light wave wavelength signal is smaller than a third preset standard value, and the second wavelength value associated with the second light wave wavelength signal is not smaller than the third preset standard value, judging that a material enters, otherwise, judging that no material enters;
the light wave emitter is opposite to the middle part of the light-transmitting material tray and emits detection light waves obliquely upwards or downwards; the first light wave receiver and the second light wave receiver are not on the same vertical plane, and the heights of the first light wave receiver and the second light wave receiver are different, and the distance between the receiving end of the first light wave receiver and the transmitting end of the light wave transmitter is equal to the distance between the receiving end of the second light wave receiver and the transmitting end of the light wave transmitter.
2. An anti-interference material detection method is characterized by comprising a light wave transmitter, a first light wave receiver and a second light wave receiver, wherein the light wave transmitter is provided with a surface light source for transmitting detection light waves to penetrate through the edge of a light-transmitting material tray; the first light wave receiver receives detection light waves penetrating through the edge of the light-transmitting material tray; the second light wave receiver receives detection light waves which do not penetrate through the light-transmitting material tray; characterized in that the method comprises the following steps:
the light wave emitter emits detection light waves;
acquiring a first receiving signal received by a first optical wave receiver and a second receiving signal received by a second optical wave receiver;
inputting a judgment result according to the first receiving signal, the second receiving signal and a preset material in-out judgment rule;
the sensitive wave bands of the first optical wave receiver and the second optical wave receiver are the same;
the step of acquiring a first receiving signal received by the first optical wave receiver and a second receiving signal received by the second optical wave receiver includes:
acquiring a first lightwave wavelength signal received by a first lightwave receiver and a second lightwave wavelength signal received by a second lightwave receiver;
inputting a judgment result according to the first receiving signal, the second receiving signal and a preset material in-out judgment rule, wherein the step comprises the following steps:
if the first wavelength value associated with the first light wave wavelength signal is smaller than a third preset standard value, and the second wavelength value associated with the second light wave wavelength signal is not smaller than the third preset standard value, judging that a material enters, otherwise, judging that no material enters;
the light wave emitter is opposite to the edge of the light-transmitting material tray and emits detection light waves obliquely upwards or downwards; the first light wave receiver and the second light wave receiver are on the same vertical plane and have the same height; and the distance between the first light wave receiver receiving end and the light wave transmitter transmitting end is equal to the distance between the second light wave receiver receiving end and the light wave transmitter transmitting end.
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| JP2011220792A (en) * | 2010-04-08 | 2011-11-04 | Seiko Epson Corp | Work-piece count calculator |
| CN104199467A (en) * | 2014-07-11 | 2014-12-10 | 浙江大学 | Material tracking system and material tracking method based on hot backup redundancy check technology |
| JP2015137988A (en) * | 2014-01-24 | 2015-07-30 | アズビル株式会社 | reflection type optical sensor |
| CN106569286A (en) * | 2016-10-27 | 2017-04-19 | 合肥欣奕华智能机器有限公司 | Photoelectric detection device |
| CN106949825A (en) * | 2016-01-06 | 2017-07-14 | 上海斐讯数据通信技术有限公司 | A kind of detection means and method |
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| CN106971226B (en) * | 2017-04-13 | 2023-06-30 | 苏州奥克思光电科技有限公司 | X-ray equipment for fully-automatic material dispensing of electronic components |
| CN109100016B (en) * | 2018-10-22 | 2021-03-12 | 珠海格力智能装备有限公司 | Detection method and detection system |
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| JP2011220792A (en) * | 2010-04-08 | 2011-11-04 | Seiko Epson Corp | Work-piece count calculator |
| JP2015137988A (en) * | 2014-01-24 | 2015-07-30 | アズビル株式会社 | reflection type optical sensor |
| CN104199467A (en) * | 2014-07-11 | 2014-12-10 | 浙江大学 | Material tracking system and material tracking method based on hot backup redundancy check technology |
| CN106949825A (en) * | 2016-01-06 | 2017-07-14 | 上海斐讯数据通信技术有限公司 | A kind of detection means and method |
| CN106569286A (en) * | 2016-10-27 | 2017-04-19 | 合肥欣奕华智能机器有限公司 | Photoelectric detection device |
| CN109343141A (en) * | 2018-11-23 | 2019-02-15 | 重庆盟讯电子科技有限公司 | A kind of SMD biscuit state monitoring apparatus in place |
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| CN110031912B (en) | 2021-03-23 |
| CN111983713A (en) | 2020-11-24 |
| CN111983712A (en) | 2020-11-24 |
| CN111983713B (en) | 2022-03-29 |
| CN110031912A (en) | 2019-07-19 |
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