CN109269470B - Three-dimensional goods shelf offset detection method and device - Google Patents
Three-dimensional goods shelf offset detection method and device Download PDFInfo
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- CN109269470B CN109269470B CN201810942587.6A CN201810942587A CN109269470B CN 109269470 B CN109269470 B CN 109269470B CN 201810942587 A CN201810942587 A CN 201810942587A CN 109269470 B CN109269470 B CN 109269470B
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- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C9/00—Measuring inclination, e.g. by clinometers, by levels
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Abstract
The invention discloses a three-dimensional shelf offset detection method, which comprises the steps that a light source transceiver, a first polarizer and a second polarizer are arranged on any one plane of a three-dimensional shelf; the laser signal sent from the transmitting end of the light source transceiver enters the plane of the three-dimensional shelf; the first polarizer receives the laser signal and selects any polarized light from the laser signal as detection light; the second polarizer receives the polarized light and transmits the polarized light to the receiving end of the light source transceiver, and the receiving end receives the polarized light signal to confirm that the plane does not deviate, otherwise, the plane of the three-dimensional shelf deviates. According to the method provided by the technical scheme of the invention, aiming at the condition that the three-dimensional goods shelf is easy to incline or even overturn, the plane light path is arranged on the plane on one side of the three-dimensional goods shelf, so that the real-time monitoring of the inclined state of the three-dimensional goods shelf can be realized, and the risk can be eliminated in time.
Description
Technical Field
The invention belongs to the field of storage inventory, and particularly relates to a three-dimensional goods shelf offset detection method and device.
Background
In the railway cold chain logistics transportation process, the storage problem of bulk goods is often involved. Storage is one of the important links of logistics transportation and is also an important pillar of logistics activity. The safety of warehousing is therefore critical to the overall logistics transportation. In the warehouse in the prior art, a plurality of rows of shelves are generally arranged in a certain sequence, and each shelf is divided into a plurality of layers and can be used for placing different kinds of goods. Since the manufacturing cost of the cold storage is larger than that of the general cold storage, the general cold storage is provided with a multi-layer shelf to utilize the upper space as much as possible in order to utilize the cold storage to the maximum extent.
However, the stereoscopic shelf has a certain disadvantage that the higher the shelf is, the higher the center of gravity is, the worse the stability is according to the principle of physics. If the weight of goods arranged on the three-dimensional goods shelf is uneven, the center of gravity of the goods shelf is more easily deviated, and the risk of overturning the goods shelf is greatly increased. Moreover, the three-dimensional goods shelf does not always overturn immediately when goods are placed on the goods shelf, and some goods shelves incline slowly due to the shift of the center of gravity after the goods are placed on the goods shelf until the goods shelf finally overturns.
In the prior art, a manual inspection method is adopted at present, and a handheld device is adopted to regularly patrol a warehouse. On one hand, the inspection mode is low in efficiency, time-consuming and labor-consuming, and cannot find hidden dangers in time so as to process the hidden dangers; on the other hand, the method depends on subjective judgment of workers, and hidden dangers existing in the fact can be easily ignored if the experience of the workers is insufficient. And if the storage safety is not guaranteed, the whole railway cold-chain logistics transportation is also greatly influenced.
Disclosure of Invention
In view of the above-mentioned drawbacks and needs of the prior art, the present invention provides a three-dimensional shelf deviation detecting apparatus. According to the method provided by the technical scheme of the invention, aiming at the condition that the three-dimensional goods shelf is easy to incline or even overturn, the plurality of groups of sensors are arranged on the plane frame close to one side of the three-dimensional goods shelf, so that the real-time monitoring of the inclined state of the three-dimensional goods shelf can be realized, and the risk can be eliminated in time.
To achieve the above object, according to one aspect of the present invention, there is provided a stereoscopic shelf deviation detecting method, including:
s1, arranging the light source transceiver, the first polarizer and the second polarizer on any plane of the stereoscopic shelf;
s2, a laser signal sent from the transmitting end of the light source transceiver enters the plane of the three-dimensional shelf;
s3 the first polarizer receives the laser signal and selects any one polarized light as the detection light;
s4, the second polarizer receives the polarized light and transmits the polarized light to the receiving end of the light source transceiver, and the receiving end receives the polarized light signal to confirm that the plane does not deviate, otherwise, the plane of the stereoscopic shelf deviates.
As a preferred embodiment of the technical scheme of the present invention, the light source transceiver is preferably disposed at an intersection of any two adjacent three planes of the stereoscopic shelf, so as to be capable of sending light signals to the two adjacent three planes, thereby implementing offset detection on the two adjacent three planes of the stereoscopic shelf.
As a preferred embodiment of the present invention, the laser signal preferably includes at least three kinds of polarized light, and each plane to be detected can be subjected to offset detection by using any one of the polarized light.
As a preferred embodiment of the present invention, the first polarizer is preferably mounted at an intersection of a first plane and a second plane adjacent to the shelf, so as to detect a deviation state of the two shelf planes.
As one preferable embodiment of the present invention, a second polarizer is preferably installed on a second plane of the shelf, the first polarizer receives the laser signal and selects a first polarized light from the laser signal as the detection light of the first plane, and the second polarizer receives the laser signal and selects a second polarized light from the laser signal as the detection light of the second plane; the second polarizer receives the first polarized light and passes it to the receiving end of the light source transceiver.
According to one aspect of the invention, the stereoscopic shelf deviation detection device is characterized by comprising a light source transceiver, a polarizer and an optical signal distributor, wherein the light source transceiver is fixed in any same plane of a stereoscopic shelf, the light source transceiver is used for emitting a laser signal, the laser signal is located in the plane of the stereoscopic shelf, the polarizer is used for receiving the laser signal and polarizing the laser signal to obtain polarized light and transmitting the polarized light, the optical signal distributor is used for receiving the polarized light and transmitting the polarized light to the light source transceiver, and the light source transceiver is used for receiving the polarized light and determining whether the plane of the stereoscopic shelf is deviated according to whether the light source transceiver can receive the polarized light.
As a preferred embodiment of the present invention, the light source transceiver is preferably disposed at an intersection of any two adjacent three planes of the three-dimensional shelf.
As a preferred aspect of the present invention, the polarizer and/or the optical signal distributor are preferably installed at the intersection of any two adjacent planes of the shelf.
As a preferred embodiment of the present invention, the polarizer preferably performs polarization selection on the received laser signal, and transmits the received polarized light to the light source transceiver.
Generally, compared with the prior art, the above technical solution conceived by the present invention has the following beneficial effects:
1) according to the method of the technical scheme, at least one sensor group is arranged in a plane close to one side of the three-dimensional shelf, a transmitter of each sensor group can continuously transmit a laser signal, and a corresponding receiver receives the laser signal, so that no obstacle exists in the plane, and the three-dimensional shelf is not inclined. Compared with manual detection, the monitoring mode is more accurate and timely, the overturning risk of the three-dimensional goods shelf can be found in time and can be processed in time, and the storage safety is improved.
2) According to the method of the technical scheme, a plurality of groups of sensors are arranged in the plane frames on two sides of the three-dimensional goods shelf, and the plurality of groups of sensors are respectively arranged in the horizontal direction, the vertical direction and the inclined direction, so that the safety and the stability of the three-dimensional goods shelf in all directions can be guaranteed, and meanwhile, as two straight lines in the plane can determine a plane, the three-dimensional goods shelf is not inclined as long as the plane does not intersect with the plane where the sensor group on one side is located.
3) According to the method, the alarm device is connected with the sensor group, when the receiver cannot receive the laser signal due to the fact that the three-dimensional goods shelf inclines, the alarm device sends out alarm information, and meanwhile the serial number of the inclined three-dimensional goods shelf is reported, and therefore workers can conveniently and accurately overhaul the inclination of the three-dimensional goods shelf in time.
Drawings
FIG. 1 is a schematic diagram of a three-dimensional shelf deviation detecting device according to an embodiment of the present invention;
FIG. 2 is a diagram showing an example of an optical path configuration 1 for detecting a plane shift of a three-dimensional shelf according to an embodiment of the present invention;
FIG. 3 is an example of an optical path structure 2 for detecting plane deviation of a three-dimensional shelf according to an embodiment of the present invention;
fig. 4 shows an example 3 of an optical path configuration for detecting a plane shift of a three-dimensional shelf according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other. The present invention will be described in further detail with reference to specific embodiments.
As shown in fig. 2 to 4, 3 embodiments of the present invention are provided. As shown in fig. 1, on a shelf of hexahedral structure, 7 optical elements are mounted on three planes adjacent to each other in pairs. Mounted at the intersection of two adjacent three planes is a light source transceiver 1 which can transmit light signals to one or more of the three planes in which it is located. Furthermore, a polarizer and an optical distributor are arranged in one plane of the three-dimensional shelf. The polarizer receives the optical signal of the light source transceiver, converts the optical signal into polarized light and sends the polarized light to the light distributor, the light distributor transmits the received polarized light to the light source transceiver, and the light source transceiver receives the polarized light, namely, the plane is not inclined.
As shown in fig. 1, for the left side of the shelf, the polarizer 2 receives the optical signal from the light source transceiver, converts the optical signal into polarized light, and feeds back the polarized light to the light source transceiver after passing through the light distributors 3 and 4, and the light source transceiver receives the polarized light, i.e. it indicates that the plane is not tilted. Further, since it is necessary to detect multiple planes of the stereoscopic shelf at the same time, and the polarized light detected by each plane is emitted from the light source transceiver 1, the optical signal emitted from the light source transceiver 1 includes multiple polarized lights, and each plane selects one of the polarized lights as the detection light of the plane, and the light source transceiver can receive the signal, that is, it indicates that the corresponding plane is not shifted.
In a specific embodiment, it is freely possible to set which polarized light is used per plane. Further, the light source transceiver identifies the received polarized light, if the polarized light corresponding to all the detection planes is received, the information that the three-dimensional shelf is not shifted is sent to the monitoring terminal, otherwise, the information that the three-dimensional shelf is shifted is sent to the monitoring terminal and specific shift information is displayed, that is, plane information corresponding to the polarized light which is not received is provided for the monitoring terminal, so that the monitoring terminal can process the shifted plane in time.
On the basis of fig. 1, the stereoscopic shelf-offset detecting apparatus of the present embodiment may be further optimized, wherein the polarizer includes two parts, a signal polarization part and a signal transceiving part. As shown in fig. 2 and 3, when the polarizer 6 is used for detection in two different planes, it can directly receive the optical signal from the light source transceiver, convert it into polarized light and transmit it to the ordinary optical transceiver, where the signal polarization part plays a role. The polarized light transmitted by other optical components (such as a polarizer or an optical transceiver) can also be received, and the received polarized light is forwarded to other optical components, and then the signal transceiving part of the polarized light plays a role. In this embodiment, the polarizer can determine according to the received optical signal, and if the optical signal is polarized light, the polarizer identifies the polarized light and forwards the polarized light to the corresponding position, and if the optical signal is the optical signal sent by the light source transceiver, the polarizer polarizes the optical signal according to the setting and forwards the optical signal to the position corresponding to the polarized light. In this embodiment, the light receiving direction of the polarizer is not limited, that is, the polarizer determines what processing is performed on the received light according to the polarization state of the received light, that is, the polarizer recognizes that the received polarized light emitted by other polarizers is forwarded, and the polarizer selects the polarization of the received light signal emitted by the light source transceiver.
In other words, in the embodiment of the technical solution of the present invention, in order to detect any one plane of the stereoscopic shelf, the following method is adopted in the embodiment:
1) the detection polarized light corresponding to each plane is selected for the plane to be detected of the three-dimensional shelf, in the embodiment, every two adjacent three planes except the bottom surface are preferably detected and named as A, B, C planes, and the three planes have the same vertex P; A. b, C the detection polarized light corresponding to the three surfaces is a, b, c;
2) fixing the light source transceivers at the intersection points P of the three adjacent surfaces of the three-dimensional shelf (i.e. at a vertex of the three-dimensional shelf, preferably a vertex of the three-dimensional shelf far from the ground), and transmitting light signals to A, B, C planes where the light source transceivers are located, wherein the light paths are located in the planes;
3) polarizing an optical signal on a detection plane to obtain polarized light corresponding to the plane, and returning the polarized light to a receiving end of a light source transceiver after twice refraction;
4) if the receiving end can receive three polarized lights of a, b and c, it indicates that no deviation occurs in all the three surfaces A, B, C, otherwise, the receiving end determines which plane has deviated according to the received polarized lights, and sends the deviated plane information to the stereoscopic shelf monitoring unit (such as a display screen, a broadcasting device, an alarm device and the like), so that monitoring personnel can overhaul the stereoscopic shelf monitoring unit at any time.
According to the technical scheme, a principle that three points determine a plane is adopted, whether the points on the plane deviate or not is observed by using the light path, if the goods shelf deviates and the positions of the points on the plane change, the light path is changed, and the light source transceiver cannot receive the detection polarized light of the plane. The method has the characteristics of high precision and high accuracy, and any plane of the three-dimensional shelf can be detected by slight inclination. Meanwhile, the light source transceiver is arranged at the intersection point of three adjacent surfaces of the three-dimensional shelf, and the three surfaces can be simultaneously detected by using one light source transceiver only by correspondingly arranging the polarizing device and the refracting device on the surface to be detected. Further, for the stereoscopic shelf with the hexahedral structure, the polarizer may be installed at an intersection of two adjacent surfaces, so as to implement polarization of the received optical signal sent by the light source transceiver by using the polarizer, and simultaneously perform corresponding forwarding on the received polarized light.
It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (4)
1. A three-dimensional shelf deviation detection method is characterized by comprising the following steps:
s1, arranging the light source transceiver, the first polarizer and the second polarizer on any same plane of the stereoscopic shelf;
s2, a laser signal sent from the transmitting end of the light source transceiver enters the plane of the three-dimensional shelf;
s3 the first polarizer receives the laser signal and selects any one polarized light as the detection light;
s4, the second polarizer receives the polarized light and transmits the polarized light to a receiving end of the light source transceiver, the receiving end receives the polarized light signal and can confirm that the plane does not deviate, otherwise, the plane of the stereoscopic shelf deviates;
the light source transceiver is arranged at the intersection point of any two adjacent three planes of the three-dimensional shelf so as to send light signals to the two adjacent three planes and realize offset detection on the two adjacent three planes of the three-dimensional shelf;
the first polarizer is arranged on the intersection point of a first plane and a second plane which are adjacent to the three-dimensional shelf, so that the offset state of the two three-dimensional shelf planes can be detected;
the second polarizer is arranged on a second plane of the stereoscopic shelf.
2. The shelf offset detection method according to claim 1, wherein the laser signal comprises at least three polarized lights, and each plane to be detected is offset-detected by using any one of the polarized lights.
3. The shelf offset detection method according to claim 1, wherein the first polarizer receives the laser signal and selects a first polarization light as the detection light of the first plane, and the second polarizer receives the laser signal and selects a second polarization light as the detection light of the second plane; the second polarizer receives the first polarized light and passes it to the receiving end of the light source transceiver.
4. The device for detecting the offset of the three-dimensional goods shelf is characterized by comprising a light source transceiver, a polarizer and an optical signal distributor which are fixed in any same plane of the three-dimensional goods shelf and are not in the same straight line, wherein the light source transceiver is arranged at the intersection point of any two adjacent three planes of the three-dimensional goods shelf; the polarizer and/or the optical signal distributor are/is arranged on the intersection point of any two adjacent planes of the three-dimensional shelf; the polarizer selects the polarization light of the received laser signal and transmits the received polarization light to the light source transceiver;
the light source transceiver is used for emitting a laser signal, the laser signal is located in the plane of the stereoscopic shelf, the polarizer is used for receiving the laser signal and polarizing the laser signal to obtain polarized light and transmitting the polarized light, the light signal distributor is used for receiving the polarized light and transmitting the polarized light to the light source transceiver, and the light source transceiver is used for receiving the polarized light and determining whether the plane of the stereoscopic shelf is deviated or not according to whether the light source transceiver can receive the polarized light or not.
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