CN114186940A - PTL system-based high-order shelf goods picking path guiding method - Google Patents
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Abstract
The invention provides a PTL system-based high-order shelf goods picking path guiding method, and belongs to the field of warehouse logistics. The path guiding method comprises the following steps of; creating a shelf map and a cargo space map at the middleware subsystem; when a picking person inputs a picking task in a picking bracelet and enters a high-level goods shelf area, selecting any goods position terminal nearby as a current goods position terminal; the current goods position terminal reads the position information of the target goods in the goods picking hand ring and judges whether the target goods are on the current goods shelf or not; if the target goods are not on the current goods shelf, reading the position information of the target goods and matching the goods shelf map, judging the goods shelf position of the target goods, generating the optimal path and reaching the target goods shelf; and if the current goods shelf is provided with the ticker, directly calling a goods space map, acquiring a target goods space terminal, and indicating the ticker to point to the target goods space terminal from the current goods space terminal. The invention does not need tower lamp guide for the high-level goods shelf, avoids positioning failure or errors caused by shielding and improves the picking efficiency.
Description
Technical Field
The invention belongs to the field of warehouse logistics, and particularly relates to a high-level shelf goods Picking path guiding method based on a Picking To Light (PTL) system.
Background
A typical production and storage logistics link of the manufacturing industry and the commerce mainly adopts a zoning relay Picking mode to pick the goods, and the zoning relay Picking mode is realized by using a Picking To Light (PTL) system. For example, as shown in fig. 1, a PTL system in the prior art includes an upper-layer service system, a Noah internet of things platform as a middleware subsystem, an intermediate-layer switch, an intelligent gateway controller, i.e., a shelf controller, of a base layer, an intelligent electronic sorting terminal, i.e., a goods space terminal, a dot matrix light bar or a hemispherical light, an intelligent sensor head or a push button or a diffuse reflection photoelectric switch, and the like. After the business software issues specific order picking information, the mapping of hardware equipment is completed through the Noah Internet of things platform, and a specific control instruction is sent to the intelligent gateway controller. The intelligent gateway controller sends instructions to control the tower lamp and the intelligent terminal equipment to complete specific functions of turning on and turning off the lamp, including controlling a hemispherical lamp or a dot matrix lamp strip. When the picking personnel finishes picking according to the indicating lamps, press keys of the intelligent picking terminals or trigger the diffuse reflection photoelectric switches or read the RFID bracelets worn by the staff through the intelligent induction heads, the intelligent terminals upload corresponding event protocols to the Noah Internet of things platform, and the Noah Internet of things platform reports the picking events to the service system to finish the picking. As shown in fig. 2, during the operation of the picking area, the shelf controller of the PTL directs the picking staff to turn on the light in the goods space terminal according to the order information of the picking staff, and the picking staff picks the goods by turning on the light to the designated position.
In the prior art, the guide lamp of the PTL system comprises a tower lamp and a button lamp, for goods with large shipment volume and small specification, such as a national power warehouse, the goods shelf has multiple layers in the vertical direction and is generally a high-level goods shelf related to the goods shelf, and at the moment, the goods shelf can shield the tower lamp, so that a picker cannot rapidly position the goods shelf according to the guidance of the lighted tower lamp; meanwhile, the goods shelf controller cannot form clear one-to-one correspondence to different goods positions under the same goods shelf.
Disclosure of Invention
In view of the above-mentioned defects or shortcomings in the prior art, the present invention aims to provide a high-level shelf Picking path guiding method based on an electronic tag Picking (PTL) system, which forms a goods level map based on the shelf map, locates the shelf of the goods on the horizontal plane through the shelf map, and then guides the goods on the current shelf through the goods level map to find the target goods, so that the high-level shelf does not need tower light guiding, thereby avoiding positioning failure or errors caused by shielding, and improving Picking efficiency.
In order to achieve the above purpose, the embodiment of the invention adopts the following technical scheme:
a high-level shelf goods picking path guiding method based on a PTL system comprises a middleware subsystem, a shelf controller, a goods level terminal, a goods picking bracelet and a horse race indicator light; the high-level shelf goods picking path guiding method comprises the following steps:
step S1, defining a cargo area origin in the middleware subsystem, creating a shelf map based on a horizontal plane coordinate system [ X, Y ] and storing the shelf map in the middleware subsystem; for each shelf, the shelf controller defines a shelf origin, and a shelf location map is created based on a vertical plane of the shelf installation location terminal and stored in the shelf controller; a horse race indicating lamp is arranged on each layer of goods space of each goods shelf;
step S2, the order picking personnel enter the high-level shelf area after inputting the order picking task in the order picking bracelet, and select any goods position terminal of any shelf nearby as the current goods position terminal;
step S3, the current goods position terminal reads the position information of the target goods in the goods picking hand ring and judges whether the target goods are on the current goods shelf; if not, executing step S4; if the current shelf is on, executing step S6;
s4, the current goods space terminal calls a goods shelf map in the middleware subsystem, matches the read target goods position information with the goods shelf map, judges the goods shelf position of the target goods and generates goods shelf guide;
step S5, the goods picking bracelet generates an optimal path to the target goods shelf according to the goods shelf guide, the picking personnel stops advancing when reaching the target goods shelf or stops advancing when encountering obstacles and being forced to advance, selects any goods position terminal of the current goods shelf as the current goods position terminal nearby, and then shifts to step S3;
and step S6, the current goods position terminal calls a goods position map in the goods shelf controller, the read target goods position information is matched with the goods position map, the target goods position terminal is obtained, and the marquee is indicated to point to the target goods position terminal from the current goods position terminal.
As a preferred embodiment of the present invention, the shelf map is stored in a middleware subsystem; the goods space map depends on the goods shelf map and is stored in the gateway of the goods shelf controller.
As a preferred embodiment of the present invention, the picking bracelet is an RFID bracelet or an NFC bracelet.
As a preferred embodiment of the present invention, the picking task input in the bracelet includes goods name, variety, type, quantity, location, etc., wherein the location information includes (x, y) coordinates and corresponding goods location terminal information.
As a preferred embodiment of the present invention, the shelf position where the target item is located in step S4 corresponds to (X, Y) coordinate information in the item position information, and the information corresponds to a certain point of the shelf in the [ X, Y ] coordinate system in the shelf map.
As a preferred embodiment of the present invention, the optimal path in step S5 includes the selection of the picking platform, the picking channel, and the logistics channel.
The invention has the following beneficial effects:
according to the high-order shelf goods picking path guiding method based on the PTL system, a goods level map is formed based on a shelf map, drawing of goods levels and a shelf electronic map is completed, shelf positioning of goods on a horizontal plane is carried out through the shelf map, then target goods are found through guiding of the goods level map on a current shelf, tower lamp guiding is not needed for the high-order shelf, positioning failure or errors caused by shielding are avoided, a picker can actively inquire a target picking path at any intelligent terminal, and path guiding is achieved; the system can select the optimal path for the picking personnel to select according to the current picking task and the field state, so that the picking efficiency is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic diagram of a prior art PTL system architecture;
FIG. 2 is a top view of a pick zone corresponding to zone picking in the prior art; fig. 3 is a flowchart of an overhead shelf picking route guiding method based on a PTL system according to an embodiment of the present invention;
fig. 4 is a top view of a warehouse in the high-bay pick-up path directing method according to an embodiment of the present invention.
Description of reference numerals:
1-a warehouse; 2-a sorting platform; 3-a goods shelf; 4-a goods picking channel; 5-a material flow channel.
Detailed Description
The technical problems, aspects and advantages of the present invention will be explained in detail below with reference to exemplary embodiments and with reference to the accompanying drawings. The following exemplary embodiments are merely illustrative of the present invention and are not to be construed as limiting the invention.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
The invention provides a high-level shelf goods picking path guiding method based on a PTL system. To high-order goods shelves pick up goods, the tower lamp is sheltered from easily in actual operation, and high-order goods shelves generally correspond the multilayer goods position, corresponding goods position map can't with the goods position one-to-one. In this embodiment, the guidance of the picking path is completed by creating a shelf map and a goods location terminal map based on the shelf map in the middleware subsystem without setting a tower lamp.
The PTL system in this embodiment includes middleware subsystem, goods shelves controller, goods level terminal, picks goods bracelet and race horse pilot lamp. The middleware subsystem is software between the business system and the hardware system and is responsible for maintaining the mapping relation between goods, personnel and hardware equipment; the goods location terminal is a distributed display radio frequency terminal device, each goods location corresponds to one goods location terminal device, and the goods location terminal is responsible for being connected with a display module on the goods location to display detailed information of a selected order. The shelf controller is a hardware top-level device with a protocol conversion function, for example, an Openwrt-based embedded edge gateway device, and is mainly used for receiving a control task issued by a field existing service system and then lighting a terminal device connected with a gateway according to the task requirement; typically, a shelf controller is provided for each shelf, corresponding to a plurality of cargo space terminals on the shelf. (ii) a The picking bracelet is worn by a picker.
As shown in fig. 3, the method for guiding an order picking path of an overhead shelf based on a PTL system according to an embodiment of the present invention includes the following steps:
step S1, defining a cargo area origin in the middleware subsystem, creating a shelf map based on a horizontal plane coordinate system [ X, Y ] and storing the shelf map in the middleware subsystem; for each shelf, the shelf controller defines a shelf origin, and a shelf location map is created based on a vertical plane of the shelf installation location terminal and stored in the shelf controller; and a horse race indicating lamp is arranged on each layer of goods space of each goods shelf.
In this step, the origin of the cargo area may be one corner point of the warehouse, the four azimuth angles of the cargo area are four corner points of the shelf map, and the horizontal coordinate of the target cargo space corresponds to the coordinate (x, y) of a certain point of the shelf map. Therefore, each goods shelf corresponds to different coordinate points in the horizontal direction, different goods positions in the vertical direction of the goods shelf correspond to the same map coordinates of the goods shelf, and the goods shelves are not distinguished, so that memory resources are saved, and the goods shelf positioning is completed quickly. The shelf map is stored in a middleware subsystem.
And for each shelf, a goods space map based on the shelf map is created, and each shelf has a goods space map of the shelf. The goods position map is a two-dimensional map, and only shows the specific goods positions on the goods shelf on the vertical plane parallel to the goods shelf. The goods space map depends on the goods shelf map and is stored in the gateway of the goods shelf controller.
The horse race indicator lamps are arranged on each layer of the goods shelf in a layered mode, and when goods are picked after entering the goods space map, the horse race indicator lamps on the goods space layer where the goods are located point to the target goods space terminal through the current goods space terminal.
And step S2, the picking personnel enter the high-level shelf area after inputting the picking task in the picking bracelet, and select any goods position terminal of any shelf nearby as the current goods position terminal.
In this step, the picking bracelet is an RFID bracelet or an NFC bracelet. The picking bracelet is worn by the picker and comprises an indicator light, an RFID or NFC tag, a vibrator and the like. The picking task input in the bracelet comprises goods name, variety, type, quantity, position and the like, wherein the position information comprises (x, y) coordinates and corresponding goods position terminal information. The picker may be a human or a robot.
Goods position terminal sets up on every goods position, and the goods position terminal of each PTL system contains a reader-writer module and can reads the information in the bracelet of choosing goods to judge whether the goods is chosen by the exact through discernment bracelet of choosing goods.
Step S3, the current goods position terminal reads the position information of the target goods in the goods picking hand ring and judges whether the target goods are on the current goods shelf; if not, executing step S4; if the current shelf is on, step S6 is executed.
In this step, the shelf controller communicates with the current goods location terminal to obtain the read target goods location information, and judges whether the goods are on the shelf through the gateway controller of the current shelf.
And step S4, the current goods space terminal calls a goods shelf map in the middleware subsystem, matches the read target goods position information with the goods shelf map, judges the goods shelf position of the target goods and generates goods shelf guide.
In this step, the shelf position of the target goods corresponds to the (X, Y) coordinate information in the goods position information, and this information corresponds to a certain point of the shelf in the [ X, Y ] coordinate system in the shelf map, at this time, the shelf can be found, but the specific goods position of the shelf cannot be found. The generated shelf guide may be orientation information or specific shelf information. E.g., a distance of 10 meters in the three o' clock direction; or row 6, row 7.
And S5, the goods picking bracelet generates an optimal path to the target goods shelf according to the goods shelf guide, the picking personnel stops advancing when reaching the target goods shelf or stops advancing when encountering obstacles and being forced to advance, selects any goods position terminal of the current goods shelf as the current goods position terminal nearby, and the step S3 is carried out.
The optimal path generation in this step is generated by the mutual communication between the picking bracelet and the middleware subsystem. The middleware subsystem stores a shelf map and stores an optimization strategy for path planning across shelves.
The optimal path comprises the selection of a picking platform, a picking channel and a logistics channel. As shown in fig. 4, the picking passage 4 refers to a passage on which the picking surface of the shelf 3 in the warehouse 1 is flushed, and the picking personnel picks the goods on the passage; the picking platform 2 refers to a platform on which a picker selects different goods shelves to walk; the logistics channel 5 refers to a connecting channel of each picking platform. For example, the best path is: the right turn is carried out for 5 meters in a straight way to the top end of the picking channel, the left turn is carried out for 2 meters in the picking platform in a straight way, the right turn is carried out for 2 meters across the logistics channel, the left turn is carried out for 2 meters in the picking platform in a straight way, the right turn enters the picking channel in a straight way for 3 meters, and the total length is 14 meters. After entering the target shelf, selecting any goods position of the current shelf nearby, and entering a goods position guiding program of the current shelf. If the goods can not move forward due to the obstruction of the barrier in the moving process and the positioning error or the path selection error is possible, the current goods space terminal is selected again.
And step S6, the current goods position terminal calls a goods position map in the goods shelf controller, the read target goods position information is matched with the goods position map, the target goods position terminal is obtained, and the marquee is indicated to point to the target goods position terminal from the current goods position terminal.
According to above-mentioned route guide, the personnel of picking find concrete goods position, accomplish through the bracelet of picking goods and pick the goods.
According to the technical scheme, the high-order shelf goods picking path guiding method based on the PTL system, which is provided by the embodiment of the invention, forms the goods level map based on the shelf map, positions the goods on the shelf on the horizontal plane through the shelf map, and then finds the target goods through the goods level map to guide the current shelf, so that the high-order shelf does not need tower lamp guiding, the positioning failure or error caused by shielding is avoided, and the picking efficiency is improved.
The foregoing description is only exemplary of the preferred embodiments of the invention and is illustrative of the principles of the technology employed. It will be appreciated by those skilled in the art that the scope of the invention herein disclosed is not limited to the particular combination of features described above, but also encompasses other arrangements formed by any combination of the above features or their equivalents without departing from the spirit of the invention. For example, the above features and (but not limited to) features having similar functions disclosed in the present invention are mutually replaced to form the technical solution.
Claims (6)
1. A high-level shelf goods picking path guiding method based on a PTL system comprises a middleware subsystem, a shelf controller, a goods level terminal, a goods picking bracelet and a horse race indicator light; the method is characterized by comprising the following steps:
step S1, defining a cargo area origin in the middleware subsystem, creating a shelf map based on a horizontal plane coordinate system [ X, Y ] and storing the shelf map in the middleware subsystem; for each shelf, the shelf controller defines a shelf origin, and a shelf location map is created based on a vertical plane of the shelf installation location terminal and stored in the shelf controller; a horse race indicating lamp is arranged on each layer of goods space of each goods shelf;
step S2, the order picking personnel enter the high-level shelf area after inputting the order picking task in the order picking bracelet, and select any goods position terminal of any shelf nearby as the current goods position terminal;
step S3, the current goods position terminal reads the position information of the target goods in the goods picking hand ring and judges whether the target goods are on the current goods shelf; if not, executing step S4; if the current shelf is on, executing step S6;
s4, the current goods space terminal calls a goods shelf map in the middleware subsystem, matches the read target goods position information with the goods shelf map, judges the goods shelf position of the target goods and generates goods shelf guide;
step S5, the goods picking bracelet generates an optimal path to the target goods shelf according to the goods shelf guide, the picking personnel stops advancing when reaching the target goods shelf or stops advancing when encountering obstacles and being forced to advance, selects any goods position terminal of the current goods shelf as the current goods position terminal nearby, and then shifts to step S3;
and step S6, the current goods position terminal calls a goods position map in the goods shelf controller, the read target goods position information is matched with the goods position map, the target goods position terminal is obtained, and the marquee is indicated to point to the target goods position terminal from the current goods position terminal.
2. The method according to claim 1, wherein the shelf map is stored in a middleware subsystem; the goods space map depends on the goods shelf map and is stored in the gateway of the goods shelf controller.
3. The method according to claim 1, wherein the picking bracelet is an RFID bracelet or an NFC bracelet.
4. The method according to claim 1 or 3, wherein the picking task input in the bracelet comprises goods name, variety, type, quantity, location, etc., wherein the location information comprises (x, y) coordinates and corresponding goods location terminal information.
5. The method according to claim 1, wherein the shelf location of the target item in step S4 corresponds to (X, Y) coordinate information in the item location information, and the information corresponds to a certain point of the shelf in the [ X, Y ] coordinate system in the shelf map.
6. The method as claimed in claim 1, wherein the optimal path in step S5 comprises selecting a picking platform, a picking channel, and a logistics channel.
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