US20180099846A1 - Method and apparatus for transporting a plurality of stacked motorized transport units - Google Patents

Method and apparatus for transporting a plurality of stacked motorized transport units Download PDF

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Publication number
US20180099846A1
US20180099846A1 US15/836,708 US201715836708A US2018099846A1 US 20180099846 A1 US20180099846 A1 US 20180099846A1 US 201715836708 A US201715836708 A US 201715836708A US 2018099846 A1 US2018099846 A1 US 2018099846A1
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US
United States
Prior art keywords
motorized transport
housing
transport units
transport unit
central computer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US15/836,708
Inventor
Donald R. High
Michael D. Atchley
David C. Winkle
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Walmart Apollo LLC
Original Assignee
Walmart Apollo LLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to US201562129726P priority Critical
Priority to US15/061,054 priority patent/US9875503B2/en
Application filed by Walmart Apollo LLC filed Critical Walmart Apollo LLC
Priority to US15/836,708 priority patent/US20180099846A1/en
Assigned to WAL-MART STORES, INC. reassignment WAL-MART STORES, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ATCHLEY, MICHAEL D., HIGH, Donald R., WINKLE, DAVID
Publication of US20180099846A1 publication Critical patent/US20180099846A1/en
Assigned to WALMART APOLLO, LLC reassignment WALMART APOLLO, LLC ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: WAL-MART STORES, INC.
Assigned to WALMART APOLLO, LLC reassignment WALMART APOLLO, LLC CORRECTIVE ASSIGNMENT TO CORRECT THE INCORRECT NO. 15/182,387 PREVIOUSLY RECORDED AT REEL: 046313 FRAME: 0096. ASSIGNOR(S) HEREBY CONFIRMS THE ASSIGNMENT. Assignors: WAL-MART STORES, INC.
Abandoned legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66FHOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F9/00Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/06Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
    • B66F9/063Automatically guided
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47FSPECIAL FURNITURE, FITTINGS, OR ACCESSORIES FOR SHOPS, STOREHOUSES, BARS, RESTAURANTS OR THE LIKE; PAYING COUNTERS
    • A47F10/00Furniture or installations specially adapted to particular types of service systems, not otherwise provided for
    • A47F10/02Furniture or installations specially adapted to particular types of service systems, not otherwise provided for for self-service type systems, e.g. supermarkets
    • A47F10/04Furniture or installations specially adapted to particular types of service systems, not otherwise provided for for self-service type systems, e.g. supermarkets for storing or handling self-service hand-carts or baskets
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47FSPECIAL FURNITURE, FITTINGS, OR ACCESSORIES FOR SHOPS, STOREHOUSES, BARS, RESTAURANTS OR THE LIKE; PAYING COUNTERS
    • A47F13/00Shop or like accessories
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47FSPECIAL FURNITURE, FITTINGS, OR ACCESSORIES FOR SHOPS, STOREHOUSES, BARS, RESTAURANTS OR THE LIKE; PAYING COUNTERS
    • A47F3/00Show cases or show cabinets
    • A47F3/08Show cases or show cabinets with arrangements for continuously or intermittently moving the merchandise
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
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    • A47L11/40Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
    • A47L11/4011Regulation of the cleaning machine by electric means; Control systems and remote control systems therefor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07CPOSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
    • B07C5/00Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
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    • B07C5/28Sorting according to weight using electrical control means
    • BPERFORMING OPERATIONS; TRANSPORTING
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    • B60L53/30Constructional details of charging stations
    • B60L53/35Means for automatic or assisted adjustment of the relative position of charging devices and vehicles
    • B60L53/36Means for automatic or assisted adjustment of the relative position of charging devices and vehicles by positioning the vehicle
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    • BPERFORMING OPERATIONS; TRANSPORTING
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    • B60P3/06Vehicles adapted to transport, to carry or to comprise special loads or objects for carrying vehicles
    • BPERFORMING OPERATIONS; TRANSPORTING
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    • B62B5/0026Propulsion aids
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    • B62B5/0069Control
    • B62B5/0076Remotely controlled
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65FGATHERING OR REMOVAL OF DOMESTIC OR LIKE REFUSE
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    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01HSTREET CLEANING; CLEANING OF PERMANENT WAYS; CLEANING BEACHES; DISPERSING OR PREVENTING FOG IN GENERAL CLEANING STREET OR RAILWAY FURNITURE OR TUNNEL WALLS
    • E01H5/00Removing snow or ice from roads or like surfaces; Grading or roughening snow or ice
    • E01H5/04Apparatus propelled by animal or engine power; Apparatus propelled by hand with driven dislodging or conveying levelling elements, conveying pneumatically for the dislodged material
    • E01H5/06Apparatus propelled by animal or engine power; Apparatus propelled by hand with driven dislodging or conveying levelling elements, conveying pneumatically for the dislodged material dislodging essentially by non-driven elements, e.g. scraper blades, snow-plough blades, scoop blades
    • E01H5/061Apparatus propelled by animal or engine power; Apparatus propelled by hand with driven dislodging or conveying levelling elements, conveying pneumatically for the dislodged material dislodging essentially by non-driven elements, e.g. scraper blades, snow-plough blades, scoop blades by scraper blades
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01HSTREET CLEANING; CLEANING OF PERMANENT WAYS; CLEANING BEACHES; DISPERSING OR PREVENTING FOG IN GENERAL CLEANING STREET OR RAILWAY FURNITURE OR TUNNEL WALLS
    • E01H5/00Removing snow or ice from roads or like surfaces; Grading or roughening snow or ice
    • E01H5/12Apparatus or implements specially adapted for breaking, disintegrating, or loosening layers of ice or hard snow with or without clearing or removing ; Roughening ice or hard snow by means of tools
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    • G01CMEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
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    • G01C21/206Instruments for performing navigational calculations specially adapted for indoor navigation
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Abstract

A housing contains a plurality of motorized transport units in a stacked relationship to one another, with a bottom-most one of the plurality of motorized transport units serving as a locomotion mechanism that selectively causes movement of the housing with the plurality of motorized transport units contained therein. By one approach the aforementioned housing has a cylindrical form factor and includes a cylindrically-shaped chamber configured to receive the motorized transport units. By one approach, for example, this housing includes no lifting mechanism to lift any of the motorized transport units into itself and further has no integral locomotion mechanism by which the housing can move itself. The interior of the housing can include at least one track formed therein to receive a corresponding part of each of the plurality of motorized transport units which the motorized transport units can engage to thereby lift themselves into the interior of the housing.

Description

    RELATED APPLICATIONS
  • This application is a continuation of U.S. application Ser. No. 15/061,054, filed Mar. 4, 2016, which is incorporated herein by reference in its entirety and which claims the benefit of each of the following U.S. Provisional applications, each of which is incorporated herein by reference in its entirety: U.S. Provisional Application No. 62/129,726, filed Mar. 6, 2015, Docket 8842-134158-US (587US01); U.S. Provisional Application No. 62/129,727, filed Mar. 6, 2015, Docket 8842-134268-US (615US01); U.S. Provisional Application No. 62/138,877, filed Mar. 26, 2015, Docket 8842-134162-US (610US01); U.S. Provisional Application No. 62/138,885, filed Mar. 26, 2015, Docket 8842-134209-US (635US01); U.S. Provisional Application No. 62/152,421, filed Apr. 24, 2015, Docket 8842-134155-US (608US01); U.S. Provisional Application No. 62/152,465, filed Apr. 24, 2015, Docket 8842-134161-US (603US01); U.S. Provisional Application No. 62/152,440, filed Apr. 24, 2015, Docket 8842-134208-US (611US01); U.S. Provisional Application No. 62/152,630, filed Apr. 24, 2015, Docket 8842-134249-US (612US01); U.S. Provisional Application No. 62/152,711, filed Apr. 24, 2015, Docket 8842-134269-US (626US01); U.S. Provisional Application No. 62/152,610, filed Apr. 24, 2015, Docket 8842-134574-US (623US01); U.S. Provisional Application No. 62/152,667, filed Apr. 24, 2015, Docket 8842-134575-US (663US01); U.S. Provisional Application No. 62/157,388, filed May 5, 2015, Docket 8842-134573-US (606US01); U.S. Provisional Application No. 62/165,579, filed May 22, 2015, Docket 8842-134576-US (677US01); U.S. Provisional Application No. 62/165,416, filed May 22, 2015, Docket 8842-134589-US (624US01); U.S. Provisional Application No. 62/165,586, filed May 22, 2015, Docket 8842-134945-US (732US01); U.S. Provisional Application No. 62/171,822, filed Jun. 5, 2015, Docket 8842-134250-US (621US01); U.S. Provisional Application No. 62/175,182, filed Jun. 12, 2015, Docket 8842-135963-US (726US01); U.S. Provisional Application No. 62/182,339, filed Jun. 19, 2015, Docket 8842-135961-US (749US01); U.S. Provisional Application No. 62/185,478, filed Jun. 26, 2015, Docket 8842-136023-US (742US01); U.S. Provisional Application No. 62/194,131, filed Jul. 17, 2015, Docket 8842-135962-US (739US01); U.S. Provisional Application No. 62/194,119, filed Jul. 17, 2015, Docket 8842-136020-US (728US01); U.S. Provisional Application No. 62/194,121, filed Jul. 17, 2015, Docket 8842-136022-US (740US01); U.S. Provisional Application No. 62/194,127, filed Jul. 17, 2015, Docket 8842-136024-US (743US01); U.S. Provisional Application No. 62/202,744, filed Aug. 7, 2015, Docket 8842-135956-US (764US01); U.S. Provisional Application No. 62/202,747, filed Aug. 7, 2015, Docket 8842-136021-US (734US01); U.S. Provisional Application No. 62/205,548, filed Aug. 14, 2015, Docket 8842-135959-US (751US01); U.S. Provisional Application No. 62/205,569, filed Aug. 14, 2015, Docket 8842-136123-US (680US01); U.S. Provisional Application No. 62/205,555, filed Aug. 14, 2015, Docket 8842-136124-US (741US01); U.S. Provisional Application No. 62/205,539, filed Aug. 14, 2015, Docket 8842-136651-US (919US01); U.S. Provisional Application No. 62/207,858, filed Aug. 20, 2015, Docket 8842-136508-US (854US01); U.S. Provisional Application No. 62/214,826, filed Sep. 4, 2015, Docket 8842-136026-US (746US01); U.S. Provisional Application No. 62/214,824, filed Sep. 4, 2015, Docket 8842-136025-US (744US01); U.S. Provisional Application No. 62/292,084, filed Feb. 5, 2016, Docket 8842-137833-US (925US01); U.S. Provisional Application No. 62/302,547, filed Mar. 2, 2016, Docket 8842-136125-US (748US01); U.S. Provisional Application No. 62/302,567, filed Mar. 2, 2016, Docket 8842-138040-US (731US01); U.S. Provisional Application No. 62/302,713, filed Mar. 2, 2016, Docket 8842-137834-US (932US01); and U.S. Provisional Application No. 62/303,021, filed Mar. 3, 2016, Docket 8842-137831-US (636US01).
  • TECHNICAL FIELD
  • These teachings relate generally to shopping environments and more particularly to devices, systems, and methods for assisting customers and/or workers in those shopping environments.
  • BACKGROUND
  • In a modern retail store environment, there is a need to improve the customer experience and/or convenience for the customer. Whether shopping in a large format (big box) store or smaller format (neighborhood) store, customers often require assistance that employees of the store are not always able to provide. For example, particularly during peak hours, there may not be enough employees available to assist customers such that customer questions go unanswered. Additionally, due to high employee turnover rates, available employees may not be fully trained or have access to information to adequately support customers. Other routine tasks also are difficult to keep up with, particularly during peak hours. For example, shopping carts are left abandoned, aisles become messy, inventory is not displayed in the proper locations or is not even placed on the sales floor, shelf prices may not be properly set, and theft is hard to discourage. All of these issues can result in low customer satisfaction or reduced convenience to the customer. With increasing competition from non-traditional shopping mechanisms, such as online shopping provided by e-commerce merchants and alternative store formats, it can be important for “brick and mortar” retailers to focus on improving the overall customer experience and/or convenience.
  • BRIEF DESCRIPTION OF THE DRAWINGS
  • The above needs are at least partially met through provision of embodiments of systems, devices, and methods designed to provide assistance to customers and/or workers in a shopping facility, such as described in the following detailed description, particularly when studied in conjunction with the drawings, wherein:
  • FIG. 1 comprises a block diagram of a shopping assistance system as configured in accordance with various embodiments of these teachings;
  • FIGS. 2A and 2B are illustrations of a motorized transport unit of the system of FIG. 1 in a retracted orientation and an extended orientation in accordance with some embodiments;
  • FIGS. 3A and 3B are illustrations of the motorized transport unit of FIGS. 2A and 2B detachably coupling to a movable item container, such as a shopping cart, in accordance with some embodiments;
  • FIG. 4 comprises a block diagram of a motorized transport unit as configured in accordance with various embodiments of these teachings;
  • FIG. 5 comprises a block diagram of a computer device as configured in accordance with various embodiments of these teachings;
  • FIG. 6 comprises a flow diagram as configured in accordance with various embodiments of these teachings;
  • FIG. 7 comprises a perspective view as configured in accordance with various embodiments of these teachings;
  • FIG. 8 comprises a block diagram as configured in accordance with various embodiments of these teachings;
  • FIG. 9 comprises an interior front elevational detail view as configured in accordance with various embodiments of these teachings;
  • FIG. 10 comprises an interior perspective detail view as configured in accordance with various embodiments of these teachings;
  • FIG. 11 comprises a front elevational schematic view as configured in accordance with various embodiments of these teachings;
  • FIG. 12 comprises a front elevational schematic view as configured in accordance with various embodiments of these teachings;
  • FIG. 13 comprises a front elevational schematic view as configured in accordance with various embodiments of these teachings;
  • FIG. 14 comprises a front elevational schematic view as configured in accordance with various embodiments of these teachings;
  • FIG. 15 comprises a front elevational schematic view as configured in accordance with various embodiments of these teachings;
  • FIG. 16 comprises a front elevational schematic view as configured in accordance with various embodiments of these teachings;
  • FIG. 17 comprises a front elevational schematic view as configured in accordance with various embodiments of these teachings; and
  • FIG. 18 comprises a perspective top view as configured in accordance with various embodiments of these teachings.
  • Elements in the figures are illustrated for simplicity and clarity and have not necessarily been drawn to scale. For example, the dimensions and/or relative positioning of some of the elements in the figures may be exaggerated relative to other elements to help to improve understanding of various embodiments of the present teachings. Also, common but well-understood elements that are useful or necessary in a commercially feasible embodiment are often not depicted in order to facilitate a less obstructed view of these various embodiments of the present teachings. Certain actions and/or steps may be described or depicted in a particular order of occurrence while those skilled in the art will understand that such specificity with respect to sequence is not actually required. The terms and expressions used herein have the ordinary technical meaning as is accorded to such terms and expressions by persons skilled in the technical field as set forth above except where different specific meanings have otherwise been set forth herein.
  • DETAILED DESCRIPTION
  • The following description is not to be taken in a limiting sense, but is made merely for the purpose of describing the general principles of exemplary embodiments. Reference throughout this specification to “one embodiment,” “an embodiment,” or similar language means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, appearances of the phrases “in one embodiment,” “in an embodiment,” and similar language throughout this specification may, but do not necessarily, all refer to the same embodiment.
  • Generally speaking, pursuant to various embodiments, systems, devices and methods are provided for assistance of persons at a shopping facility. Generally, assistance may be provided to customers or shoppers at the facility and/or to workers at the facility. The facility may be any type of shopping facility at a location in which products for display and/or for sale are variously distributed throughout the shopping facility space. The shopping facility may be a retail sales facility, or any other type of facility in which products are displayed and/or sold. The shopping facility may include one or more of sales floor areas, checkout locations (i.e., point of sale (POS) locations), customer service areas other than checkout locations (such as service areas to handle returns), parking locations, entrance and exit areas, stock room areas, stock receiving areas, hallway areas, common areas shared by merchants, and so on. Generally, a shopping facility includes areas that may be dynamic in terms of the physical structures occupying the space or area and objects, items, machinery and/or persons moving in the area. For example, the sales floor area may include product storage units, shelves, racks, modules, bins, etc., and other walls, dividers, partitions, etc. that may be configured in different layouts or physical arrangements. In other example, persons or other movable objects may be freely and independently traveling through the shopping facility space. And in another example, the persons or movable objects move according to known travel patterns and timing. The facility may be any size of format facility, and may include products from one or more merchants. For example, a facility may be a single store operated by one merchant or may be a collection of stores covering multiple merchants such as a mall.
  • Generally, the system makes use of automated, robotic mobile devices, e.g., motorized transport units, that are capable of self-powered movement through a space of the shopping facility and providing any number of functions. Movement and operation of such devices may be controlled by a central computer system or may be autonomously controlled by the motorized transport units themselves. Various embodiments provide one or more user interfaces to allow various users to interact with the system including the automated mobile devices and/or to directly interact with the automated mobile devices. In some embodiments, the automated mobile devices and the corresponding system serve to enhance a customer shopping experience in the shopping facility, e.g., by assisting shoppers and/or workers at the facility.
  • In some embodiments, a shopping facility personal assistance system comprises: a plurality of motorized transport units located in and configured to move through a shopping facility space; a plurality of user interface units, each corresponding to a respective motorized transport unit during use of the respective motorized transport unit; and a central computer system having a network interface such that the central computer system wirelessly communicates with one or both of the plurality of motorized transport units and the plurality of user interface units, wherein the central computer system is configured to control movement of the plurality of motorized transport units through the shopping facility space based at least on inputs from the plurality of user interface units.
  • System Overview
  • Referring now to the drawings, FIG. 1 illustrates embodiments of a shopping facility assistance system 100 that can serve to carry out at least some of the teachings set forth herein. It will be understood that the details of this example are intended to serve in an illustrative capacity and are not necessarily intended to suggest any limitations as regards the present teachings. It is noted that generally, FIGS. 1-5 describe the general functionality of several embodiments of a system, and FIGS. 6-18 expand on some functionalities of some embodiments of the system and/or embodiments independent of such systems.
  • In the example of FIG. 1, a shopping assistance system 100 is implemented in whole or in part at a shopping facility 101. Generally, the system 100 includes one or more motorized transport units (MTUs) 102; one or more item containers 104; a central computer system 106 having at least one control circuit 108, at least one memory 110 and at least one network interface 112; at least one user interface unit 114; a location determination system 116; at least one video camera 118; at least one motorized transport unit (MTU) dispenser 120; at least one motorized transport unit (MTU) docking station 122; at least one wireless network 124; at least one database 126; at least one user interface computer device 128; an item display module 130; and a locker or an item storage unit 132. It is understood that more or fewer of such components may be included in different embodiments of the system 100.
  • These motorized transport units 102 are located in the shopping facility 101 and are configured to move throughout the shopping facility space. Further details regarding such motorized transport units 102 appear further below. Generally speaking, these motorized transport units 102 are configured to either comprise, or to selectively couple to, a corresponding movable item container 104. A simple example of an item container 104 would be a shopping cart as one typically finds at many retail facilities, or a rocket cart, a flatbed cart or any other mobile basket or platform that may be used to gather items for potential purchase.
  • In some embodiments, these motorized transport units 102 wirelessly communicate with, and are wholly or largely controlled by, the central computer system 106. In particular, in some embodiments, the central computer system 106 is configured to control movement of the motorized transport units 102 through the shopping facility space based on a variety of inputs. For example, the central computer system 106 communicates with each motorized transport unit 102 via the wireless network 124 which may be one or more wireless networks of one or more wireless network types (such as, a wireless local area network, a wireless personal area network, a wireless mesh network, a wireless star network, a wireless wide area network, a cellular network, and so on), capable of providing wireless coverage of the desired range of the motorized transport units 102 according to any known wireless protocols, including but not limited to a cellular, Wi-Fi, Zigbee or Bluetooth network.
  • By one approach the central computer system 106 is a computer based device and includes at least one control circuit 108, at least one memory 110 and at least one wired and/or wireless network interface 112. Such a control circuit 108 can comprise a fixed-purpose hard-wired platform or can comprise a partially or wholly programmable platform, such as a microcontroller, an application specification integrated circuit, a field programmable gate array, and so on. These architectural options are well known and understood in the art and require no further description here. This control circuit 108 is configured (for example, by using corresponding programming stored in the memory 110 as will be well understood by those skilled in the art) to carry out one or more of the steps, actions, and/or functions described herein.
  • In this illustrative example the control circuit 108 operably couples to one or more memories 110. The memory 110 may be integral to the control circuit 108 or can be physically discrete (in whole or in part) from the control circuit 108 as desired. This memory 110 can also be local with respect to the control circuit 108 (where, for example, both share a common circuit board, chassis, power supply, and/or housing) or can be partially or wholly remote with respect to the control circuit 108 (where, for example, the memory 110 is physically located in another facility, metropolitan area, or even country as compared to the control circuit 108).
  • This memory 110 can serve, for example, to non-transitorily store the computer instructions that, when executed by the control circuit 108, cause the control circuit 108 to behave as described herein. (As used herein, this reference to “non-transitorily” will be understood to refer to a non-ephemeral state for the stored contents (and hence excludes when the stored contents merely constitute signals or waves) rather than volatility of the storage media itself and hence includes both non-volatile memory (such as read-only memory (ROM) as well as volatile memory (such as an erasable programmable read-only memory (EPROM).)
  • Additionally, at least one database 126 may be accessible by the central computer system 106. Such databases may be integrated into the central computer system 106 or separate from it. Such databases may be at the location of the shopping facility 101 or remote from the shopping facility 101. Regardless of location, the databases comprise memory to store and organize certain data for use by the central control system 106. In some embodiments, the at least one database 126 may store data pertaining to one or more of: shopping facility mapping data, customer data, customer shopping data and patterns, inventory data, product pricing data, and so on.
  • In this illustrative example, the central computer system 106 also wirelessly communicates with a plurality of user interface units 114. These teachings will accommodate a variety of user interface units including, but not limited to, mobile and/or handheld electronic devices such as so-called smart phones and portable computers such as tablet/pad-styled computers. Generally speaking, these user interface units 114 should be able to wirelessly communicate with the central computer system 106 via a wireless network, such as the wireless network 124 of the shopping facility 101 (such as a Wi-Fi wireless network). These user interface units 114 generally provide a user interface for interaction with the system. In some embodiments, a given motorized transport unit 102 is paired with, associated with, assigned to or otherwise made to correspond with a given user interface unit 114. In some embodiments, these user interface units 114 should also be able to receive verbally-expressed input from a user and forward that content to the central computer system 106 or a motorized transport unit 102 and/or convert that verbally-expressed input into a form useful to the central computer system 106 or a motorized transport unit 102.
  • By one approach at least some of the user interface units 114 belong to corresponding customers who have come to the shopping facility 101 to shop. By another approach, in lieu of the foregoing or in combination therewith, at least some of the user interface units 114 belong to the shopping facility 101 and are loaned to individual customers to employ as described herein. In some embodiments, one or more user interface units 114 are attachable to a given movable item container 104 or are integrated with the movable item container 104. Similarly, in some embodiments, one or more user interface units 114 may be those of shopping facility workers, belong to the shopping facility 101 and are loaned to the workers, or a combination thereof.
  • In some embodiments, the user interface units 114 may be general purpose computer devices that include computer programming code to allow it to interact with the system 106. For example, such programming may be in the form of an application installed on the user interface unit 114 or in the form of a browser that displays a user interface provided by the central computer system 106 or other remote computer or server (such as a web server). In some embodiments, one or more user interface units 114 may be special purpose devices that are programmed to primarily function as a user interface for the system 100. Depending on the functionality and use case, user interface units 114 may be operated by customers of the shopping facility or may be operated by workers at the shopping facility, such as facility employees (associates or colleagues), vendors, suppliers, contractors, etc.
  • By one approach, the system 100 optionally includes one or more video cameras 118. Captured video imagery from such a video camera 118 can be provided to the central computer system 106. That information can then serve, for example, to help the central computer system 106 determine a present location of one or more of the motorized transport units 102 and/or determine issues or concerns regarding automated movement of those motorized transport units 102 in the shopping facility space. As one simple example in these regards, such video information can permit the central computer system 106, at least in part, to detect an object in a path of movement of a particular one of the motorized transport units 102.
  • By one approach these video cameras 118 comprise existing surveillance equipment employed at the shopping facility 101 to serve, for example, various security purposes. By another approach these video cameras 118 are dedicated to providing video content to the central computer system 106 to facilitate the latter's control of the motorized transport units 102. If desired, the video cameras 118 can have a selectively movable field of view and/or zoom capability that the central computer system 106 controls as appropriate to help ensure receipt of useful information at any given moment.
  • In some embodiments, a location detection system 116 is provided at the shopping facility 101. The location detection system 116 provides input to the central computer system 106 useful to help determine the location of one or more of the motorized transport units 102. In some embodiments, the location detection system 116 includes a series of light sources (e.g., LEDs (light-emitting diodes)) that are mounted in the ceiling at known positions throughout the space and that each encode data in the emitted light that identifies the source of the light (and thus, the location of the light). As a given motorized transport unit 102 moves through the space, light sensors (or light receivers) at the motorized transport unit 102, on the movable item container 104 and/or at the user interface unit 114 receive the light and can decode the data. This data is sent back to the central computer system 106 which can determine the position of the motorized transport unit 102 by the data of the light it receives, since it can relate the light data to a mapping of the light sources to locations at the facility 101. Generally, such lighting systems are known and commercially available, e.g., the ByteLight system from ByteLight of Boston, Mass. In embodiments using a ByteLight system, a typical display screen of the typical smart phone device can be used as a light sensor or light receiver to receive and process data encoded into the light from the ByteLight light sources.
  • In other embodiments, the location detection system 116 includes a series of low energy radio beacons (e.g., Bluetooth low energy beacons) at known positions throughout the space and that each encode data in the emitted radio signal that identifies the beacon (and thus, the location of the beacon). As a given motorized transport unit 102 moves through the space, low energy receivers at the motorized transport unit 102, on the movable item container 104 and/or at the user interface unit 114 receive the radio signal and can decode the data. This data is sent back to the central computer system 106 which can determine the position of the motorized transport unit 102 by the location encoded in the radio signal it receives, since it can relate the location data to a mapping of the low energy radio beacons to locations at the facility 101. Generally, such low energy radio systems are known and commercially available. In embodiments using a Bluetooth low energy radio system, a typical Bluetooth radio of a typical smart phone device can be used as a receiver to receive and process data encoded into the Bluetooth low energy radio signals from the Bluetooth low energy beacons.
  • In still other embodiments, the location detection system 116 includes a series of audio beacons at known positions throughout the space and that each encode data in the emitted audio signal that identifies the beacon (and thus, the location of the beacon). As a given motorized transport unit 102 moves through the space, microphones at the motorized transport unit 102, on the movable item container 104 and/or at the user interface unit 114 receive the audio signal and can decode the data. This data is sent back to the central computer system 106 which can determine the position of the motorized transport unit 102 by the location encoded in the audio signal it receives, since it can relate the location data to a mapping of the audio beacons to locations at the facility 101. Generally, such audio beacon systems are known and commercially available. In embodiments using an audio beacon system, a typical microphone of a typical smart phone device can be used as a receiver to receive and process data encoded into the audio signals from the audio beacon.
  • Also optionally, the central computer system 106 can operably couple to one or more user interface computers 128 (comprising, for example, a display and a user input interface such as a keyboard, touch screen, and/or cursor-movement device). Such a user interface computer 128 can permit, for example, a worker (e.g., an associate, analyst, etc.) at the retail or shopping facility 101 to monitor the operations of the central computer system 106 and/or to attend to any of a variety of administrative, configuration or evaluation tasks as may correspond to the programming and operation of the central computer system 106. Such user interface computers 128 may be at or remote from the location of the facility 101 and may access one or more the databases 126.
  • In some embodiments, the system 100 includes at least one motorized transport unit (MTU) storage unit or dispenser 120 at various locations in the shopping facility 101. The dispenser 120 provides for storage of motorized transport units 102 that are ready to be assigned to customers and/or workers. In some embodiments, the dispenser 120 takes the form of a cylinder within which motorized transports units 102 are stacked and released through the bottom of the dispenser 120. Further details of such embodiments are provided further below. In some embodiments, the dispenser 120 may be fixed in location or may be mobile and capable of transporting itself to a given location or utilizing a motorized transport unit 102 to transport the dispenser 120, then dispense one or more motorized transport units 102.
  • In some embodiments, the system 100 includes at least one motorized transport unit (MTU) docking station 122. These docking stations 122 provide locations where motorized transport units 102 can travel and connect to. For example, the motorized transport units 102 may be stored and charged at the docking station 122 for later use, and/or may be serviced at the docking station 122.
  • In accordance with some embodiments, a given motorized transport unit 102 detachably connects to a movable item container 104 and is configured to move the movable item container 104 through the shopping facility space under control of the central computer system 106 and/or the user interface unit 114. For example, a motorized transport unit 102 can move to a position underneath a movable item container 104 (such as a shopping cart, a rocket cart, a flatbed cart, or any other mobile basket or platform), align itself with the movable item container 104 (e.g., using sensors) and then raise itself to engage an undersurface of the movable item container 104 and lift a portion of the movable item container 104. Once the motorized transport unit is cooperating with the movable item container 104 (e.g., lifting a portion of the movable item container), the motorized transport unit 102 can continue to move throughout the facility space 101 taking the movable item container 104 with it. In some examples, the motorized transport unit 102 takes the form of the motorized transport unit 202 of FIGS. 2A-3B as it engages and detachably connects to a given movable item container 104. It is understood that in other embodiments, the motorized transport unit 102 may not lift a portion of the movable item container 104, but that it removably latches to, connects to or otherwise attaches to a portion of the movable item container 104 such that the movable item container 104 can be moved by the motorized transport unit 102. For example, the motorized transport unit 102 can connect to a given movable item container using a hook, a mating connector, a magnet, and so on.
  • In addition to detachably coupling to movable item containers 104 (such as shopping carts), in some embodiments, motorized transport units 102 can move to and engage or connect to an item display module 130 and/or an item storage unit or locker 132. For example, an item display module 130 may take the form of a mobile display rack or shelving unit configured to house and display certain items for sale. It may be desired to position the display module 130 at various locations within the shopping facility 101 at various times. Thus, one or more motorized transport units 102 may move (as controlled by the central computer system 106) underneath the item display module 130, extend upward to lift the module 130 and then move it to the desired location. A storage locker 132 may be a storage device where items for purchase are collected and placed therein for a customer and/or worker to later retrieve. In some embodiments, one or more motorized transport units 102 may be used to move the storage locker to a desired location in the shopping facility 101. Similar to how a motorized transport unit engages a movable item container 104 or item display module 130, one or more motorized transport units 102 may move (as controlled by the central computer system 106) underneath the storage locker 132, extend upward to lift the locker 132 and then move it to the desired location.
  • FIGS. 2A and 2B illustrate some embodiments of a motorized transport unit 202, similar to the motorized transport unit 102 shown in the system of FIG. 1. In this embodiment, the motorized transport unit 202 takes the form of a disc-shaped robotic device having motorized wheels (not shown), a lower body portion 204 and an upper body portion 206 that fits over at least part of the lower body portion 204. It is noted that in other embodiments, the motorized transport unit may have other shapes and/or configurations, and is not limited to disc-shaped. For example, the motorized transport unit may be cubic, octagonal, triangular, or other shapes, and may be dependent on a movable item container with which the motorized transport unit is intended to cooperate. Also included are guide members 208. In FIG. 2A, the motorized transport unit 202 is shown in a retracted position in which the upper body portion 206 fits over the lower body portion 204 such that the motorized transport unit 202 is in its lowest profile orientation which is generally the preferred orientation for movement when it is unattached to a movable item container 104 for example. In FIG. 2B, the motorized transport unit 202 is shown in an extended position in which the upper body portion 206 is moved upward relative to the lower body portion 204 such that the motorized transport unit 202 is in its highest profile orientation for movement when it is lifting and attaching to a movable item container 104 for example. The mechanism within the motorized transport unit 202 is designed to provide sufficient lifting force to lift the weight of the upper body portion 206 and other objects to be lifted by the motorized transport unit 202, such as movable item containers 104 and items placed within the movable item container, item display modules 130 and items supported by the item display module, and storage lockers 132 and items placed within the storage locker. The guide members 208 are embodied as pegs or shafts that extend horizontally from the both the upper body portion 206 and the lower body portion 204. In some embodiments, these guide members 208 assist docking the motorized transport unit 202 to a docking station 122 or a dispenser 120. In some embodiments, the lower body portion 204 and the upper body portion are capable to moving independently of each other. For example, the upper body portion 206 may be raised and/or rotated relative to the lower body portion 204. That is, one or both of the upper body portion 206 and the lower body portion 204 may move toward/away from the other or rotated relative to the other. In some embodiments, in order to raise the upper body portion 206 relative to the lower body portion 204, the motorized transport unit 202 includes an internal lifting system (e.g., including one or more electric actuators or rotary drives or motors). Numerous examples of such motorized lifting and rotating systems are known in the art. Accordingly, further elaboration in these regards is not provided here for the sake of brevity.
  • FIGS. 3A and 3B illustrate some embodiments of the motorized transport unit 202 detachably engaging a movable item container embodied as a shopping cart 302. In FIG. 3A, the motorized transport unit 202 is in the orientation of FIG. 2A such that it is retracted and able to move in position underneath a portion of the shopping cart 302. Once the motorized transport unit 202 is in position (e.g., using sensors), as illustrated in FIG. 3B, the motorized transport unit 202 is moved to the extended position of FIG. 2B such that the front portion 304 of the shopping cart is lifted off of the ground by the motorized transport unit 202, with the wheels 306 at the rear of the shopping cart 302 remaining on the ground. In this orientation, the motorized transport unit 202 is able to move the shopping cart 302 throughout the shopping facility. It is noted that in these embodiments, the motorized transport unit 202 does not bear the weight of the entire cart 302 since the rear wheels 306 rest on the floor. It is understood that in some embodiments, the motorized transport unit 202 may be configured to detachably engage other types of movable item containers, such as rocket carts, flatbed carts or other mobile baskets or platforms.
  • FIG. 4 presents a more detailed example of some embodiments of the motorized transport unit 102 of FIG. 1. In this example, the motorized transport unit 102 has a housing 402 that contains (partially or fully) or at least supports and carries a number of components. These components include a control unit 404 comprising a control circuit 406 that, like the control circuit 108 of the central computer system 106, controls the general operations of the motorized transport unit 102. Accordingly, the control unit 404 also includes a memory 408 coupled to the control circuit 406 and that stores, for example, operating instructions and/or useful data.
  • The control circuit 406 operably couples to a motorized wheel system 410. This motorized wheel system 410 functions as a locomotion system to permit the motorized transport unit 102 to move within the aforementioned retail or shopping facility 101 (thus, the motorized wheel system 410 may more generically be referred to as a locomotion system). Generally speaking, this motorized wheel system 410 will include at least one drive wheel (i.e., a wheel that rotates (around a horizontal axis) under power to thereby cause the motorized transport unit 102 to move through interaction with, for example, the floor of the shopping facility 101). The motorized wheel system 410 can include any number of rotating wheels and/or other floor-contacting mechanisms as may be desired and/or appropriate to the application setting.
  • The motorized wheel system 410 also includes a steering mechanism of choice. One simple example in these regards comprises one or more of the aforementioned wheels that can swivel about a vertical axis to thereby cause the moving motorized transport unit 102 to turn as well.
  • Numerous examples of motorized wheel systems are known in the art. Accordingly, further elaboration in these regards is not provided here for the sake of brevity save to note that the aforementioned control circuit 406 is configured to control the various operating states of the motorized wheel system 410 to thereby control when and how the motorized wheel system 410 operates.
  • In this illustrative example, the control circuit 406 also operably couples to at least one wireless transceiver 412 that operates according to any known wireless protocol. This wireless transceiver 412 can comprise, for example, a Wi-Fi-compatible and/or Bluetooth-compatible transceiver that can communicate with the aforementioned central computer system 106 via the aforementioned wireless network 124 of the shopping facility 101. So configured the control circuit 406 of the motorized transport unit 102 can provide information to the central computer system 106 and can receive information and/or instructions from the central computer system 106. As one simple example in these regards, the control circuit 406 can receive instructions from the central computer system 106 regarding movement of the motorized transport unit 102.
  • These teachings will accommodate using any of a wide variety of wireless technologies as desired and/or as may be appropriate in a given application setting. These teachings will also accommodate employing two or more different wireless transceivers 412 if desired.
  • The control circuit 406 also couples to one or more on-board sensors 414. These teachings will accommodate a wide variety of sensor technologies and form factors. By one approach at least one such sensor 414 can comprise a light sensor or light receiver. When the aforementioned location detection system 116 comprises a plurality of light emitters disposed at particular locations within the shopping facility 101, such a light sensor can provide information that the control circuit 406 and/or the central computer system 106 employs to determine a present location and/or orientation of the motorized transport unit 102.
  • As another example, such a sensor 414 can comprise a distance measurement unit configured to detect a distance between the motorized transport unit 102 and one or more objects or surfaces around the motorized transport unit 102 (such as an object that lies in a projected path of movement for the motorized transport unit 102 through the shopping facility 101). These teachings will accommodate any of a variety of distance measurement units including optical units and sound/ultrasound units. In one example, a sensor 414 comprises a laser distance sensor device capable of determining a distance to objects in proximity to the sensor. In some embodiments, a sensor 414 comprises an optical based scanning device to sense and read optical patterns in proximity to the sensor, such as bar codes variously located on structures in the shopping facility 101. In some embodiments, a sensor 414 comprises a radio frequency identification (RFID) tag reader capable of reading RFID tags in proximity to the sensor. Such sensors may be useful to determine proximity to nearby objects, avoid collisions, orient the motorized transport unit at a proper alignment orientation to engage a movable item container, and so on.
  • The foregoing examples are intended to be illustrative and are not intended to convey an exhaustive listing of all possible sensors. Instead, it will be understood that these teachings will accommodate sensing any of a wide variety of circumstances or phenomena to support the operating functionality of the motorized transport unit 102 in a given application setting.
  • By one optional approach an audio input 416 (such as a microphone) and/or an audio output 418 (such as a speaker) can also operably couple to the control circuit 406. So configured the control circuit 406 can provide a variety of audible sounds to thereby communicate with a user of the motorized transport unit 102, other persons in the vicinity of the motorized transport unit 102, or even other motorized transport units 102 in the area. These audible sounds can include any of a variety of tones and other non-verbal sounds. These audible sounds can also include, in lieu of the foregoing or in combination therewith, pre-recorded or synthesized speech.
  • The audio input 416, in turn, provides a mechanism whereby, for example, a user provides verbal input to the control circuit 406. That verbal input can comprise, for example, instructions, inquiries, or information. So configured, a user can provide, for example, a question to the motorized transport unit 102 (such as, “Where are the towels?”). The control circuit 406 can cause that verbalized question to be transmitted to the central computer system 106 via the motorized transport unit's wireless transceiver 412. The central computer system 106 can process that verbal input to recognize the speech content and to then determine an appropriate response. That response might comprise, for example, transmitting back to the motorized transport unit 102 specific instructions regarding how to move the motorized transport unit 102 (via the aforementioned motorized wheel system 410) to the location in the shopping facility 101 where the towels are displayed.
  • In this example the motorized transport unit 102 includes a rechargeable power source 420 such as one or more batteries. The power provided by the rechargeable power source 420 can be made available to whichever components of the motorized transport unit 102 require electrical energy. By one approach the motorized transport unit 102 includes a plug or other electrically conductive interface that the control circuit 406 can utilize to automatically connect to an external source of electrical energy to thereby recharge the rechargeable power source 420.
  • By one approach the motorized transport unit 102 comprises an integral part of a movable item container 104 such as a grocery cart. As used herein, this reference to “integral” will be understood to refer to a non-temporary combination and joinder that is sufficiently complete so as to consider the combined elements to be as one. Such a joinder can be facilitated in a number of ways including by securing the motorized transport unit housing 402 to the item container using bolts or other threaded fasteners as versus, for example, a clip.
  • These teachings will also accommodate selectively and temporarily attaching the motorized transport unit 102 to an item container 104. In such a case the motorized transport unit 102 can include a movable item container coupling structure 422. By one approach this movable item container coupling structure 422 operably couples to a control circuit 202 to thereby permit the latter to control, for example, the latched and unlatched states of the movable item container coupling structure 422. So configured, by one approach the control circuit 406 can automatically and selectively move the motorized transport unit 102 (via the motorized wheel system 410) towards a particular item container until the movable item container coupling structure 422 can engage the item container to thereby temporarily physically couple the motorized transport unit 102 to the item container. So latched, the motorized transport unit 102 can then cause the item container to move with the motorized transport unit 102. In embodiments such as illustrated in FIGS. 2A-3B, the movable item container coupling structure 422 includes a lifting system (e.g., including an electric drive or motor) to cause a portion of the body or housing 402 to engage and lift a portion of the item container off of the ground such that the motorized transport unit 102 can carry a portion of the item container. In other embodiments, the movable transport unit latches to a portion of the movable item container without lifting a portion thereof off of the ground.
  • In either case, by combining the motorized transport unit 102 with an item container, and by controlling movement of the motorized transport unit 102 via the aforementioned central computer system 106, these teachings will facilitate a wide variety of useful ways to assist both customers and associates in a shopping facility setting. For example, the motorized transport unit 102 can be configured to follow a particular customer as they shop within the shopping facility 101. The customer can then place items they intend to purchase into the item container that is associated with the motorized transport unit 102.
  • In some embodiments, the motorized transport unit 102 includes an input/output (I/O) device 424 that is coupled to the control circuit 406. The I/O device 424 allows an external device to couple to the control unit 404. The function and purpose of connecting devices will depend on the application. In some examples, devices connecting to the I/O device 424 may add functionality to the control unit 404, allow the exporting of data from the control unit 404, allow the diagnosing of the motorized transport unit 102, and so on.
  • In some embodiments, the motorized transport unit 102 includes a user interface 426 including for example, user inputs and/or user outputs or displays depending on the intended interaction with the user. For example, user inputs could include any input device such as buttons, knobs, switches, touch sensitive surfaces or display screens, and so on. Example user outputs include lights, display screens, and so on. The user interface 426 may work together with or separate from any user interface implemented at a user interface unit 114 (such as a smart phone or tablet device).
  • The control unit 404 includes a memory 408 coupled to the control circuit 406 and that stores, for example, operating instructions and/or useful data. The control circuit 406 can comprise a fixed-purpose hard-wired platform or can comprise a partially or wholly programmable platform. These architectural options are well known and understood in the art and require no further description here. This control circuit 406 is configured (for example, by using corresponding programming stored in the memory 408 as will be well understood by those skilled in the art) to carry out one or more of the steps, actions, and/or functions described herein. The memory 408 may be integral to the control circuit 406 or can be physically discrete (in whole or in part) from the control circuit 406 as desired. This memory 408 can also be local with respect to the control circuit 406 (where, for example, both share a common circuit board, chassis, power supply, and/or housing) or can be partially or wholly remote with respect to the control circuit 406. This memory 408 can serve, for example, to non-transitorily store the computer instructions that, when executed by the control circuit 406, cause the control circuit 406 to behave as described herein. (As used herein, this reference to “non-transitorily” will be understood to refer to a non-ephemeral state for the stored contents (and hence excludes when the stored contents merely constitute signals or waves) rather than volatility of the storage media itself and hence includes both non-volatile memory (such as read-only memory (ROM) as well as volatile memory (such as an erasable programmable read-only memory (EPROM).)
  • It is noted that not all components illustrated in FIG. 4 are included in all embodiments of the motorized transport unit 102. That is, some components may be optional depending on the implementation.
  • FIG. 5 illustrates a functional block diagram that may generally represent any number of various electronic components of the system 100 that are computer type devices. The computer device 500 includes a control circuit 502, a memory 504, a user interface 506 and an input/output (I/O) interface 508 providing any type of wired and/or wireless connectivity to the computer device 500, all coupled to a communication bus 510 to allow data and signaling to pass therebetween. Generally, the control circuit 502 and the memory 504 may be referred to as a control unit. The control circuit 502, the memory 504, the user interface 506 and the I/O interface 508 may be any of the devices described herein or as understood in the art. The functionality of the computer device 500 will depend on the programming stored in the memory 504. The computer device 500 may represent a high level diagram for one or more of the central computer system 106, the motorized transport unit 102, the user interface unit 114, the location detection system 116, the user interface computer 128, the MTU docking station 122 and the MTU dispenser 120, or any other device or component in the system that is implemented as a computer device.
  • Additional Features Overview
  • Referring generally to FIGS. 1-5, the shopping assistance system 100 may implement one or more of several different features depending on the configuration of the system and its components. The following provides a brief description of several additional features that could be implemented by the system. One or more of these features could also be implemented in other systems separate from embodiments of the system. This is not meant to be an exhaustive description of all features and not meant to be an exhaustive description of the details any one of the features. Further details with regards to one or more features beyond this overview may be provided herein.
  • Tagalong Steering: This feature allows a given motorized transport unit 102 to lead or follow a user (e.g., a customer and/or a worker) throughout the shopping facility 101. For example, the central computer system 106 uses the location detection system 116 to determine the location of the motorized transport unit 102. For example, LED smart lights (e.g., the ByteLight system) of the location detection system 116 transmit a location number to smart devices which are with the customer (e.g., user interface units 114), and/or on the item container 104/motorized transport unit 102. The central computer system 106 receives the LED location numbers received by the smart devices through the wireless network 124. Using this information, in some embodiments, the central computer system 106 uses a grid placed upon a 2D CAD map and 3D point cloud model (e.g., from the databases 126) to direct, track, and plot paths for the other devices. Using the grid, the motorized transport unit 102 can drive a movable item container 104 in a straight path rather than zigzagging around the facility. As the user moves from one grid to another, the motorized transport unit 102 drives the container 104 from one grid to the other. In some embodiments, as the user moves towards the motorized transport unit, it stays still until the customer moves beyond an adjoining grid.
  • Detecting Objects: In some embodiments, motorized transport units 102 detect objects through several sensors mounted on motorized transport unit 102, through independent cameras (e.g., video cameras 118), through sensors of a corresponding movable item container 104, and through communications with the central computer system 106. In some embodiments, with semi-autonomous capabilities, the motorized transport unit 102 will attempt to avoid obstacles, and if unable to avoid, it will notify the central computer system 106 of an exception condition. In some embodiments, using sensors 414 (such as distance measurement units, e.g., laser or other optical-based distance measurement sensors), the motorized transport unit 102 detects obstacles in its path, and will move to avoid, or stop until the obstacle is clear.
  • Visual Remote Steering: This feature enables movement and/or operation of a motorized transport unit 102 to be controlled by a user on-site, off-site, or anywhere in the world. This is due to the architecture of some embodiments where the central computer system 106 outputs the control signals to the motorized transport unit 102. These controls signals could have originated at any device in communication with the central computer system 106. For example, the movement signals sent to the motorized transport unit 102 may be movement instructions determined by the central computer system 106; commands received at a user interface unit 114 from a user; and commands received at the central computer system 106 from a remote user not located at the shopping facility space.
  • Determining Location: Similar to that described above, this feature enables the central computer system 106 to determine the location of devices in the shopping facility 101. For example, the central computer system 106 maps received LED light transmissions, Bluetooth low energy radio signals or audio signals (or other received signals encoded with location data) to a 2D map of the shopping facility. Objects within the area of the shopping facility are also mapped and associated with those transmissions. Using this information, the central computer system 106 can determine the location of devices such as motorized transport units.
  • Digital Physical Map Integration: In some embodiments, the system 100 is capable of integrating 2D and 3D maps of the shopping facility with physical locations of objects and workers. Once the central computer system 106 maps all objects to specific locations using algorithms, measurements and LED geo-location, for example, grids are applied which sections off the maps into access ways and blocked sections. Motorized transport units 102 use these grids for navigation and recognition. In some cases, grids are applied to 2D horizontal maps along with 3D models. In some cases, grids start at a higher unit level and then can be broken down into smaller units of measure by the central computer system 106 when needed to provide more accuracy.
  • Calling a Motorized Transport Unit: This feature provides multiple methods to request and schedule a motorized transport unit 102 for assistance in the shopping facility. In some embodiments, users can request use of a motorized transport unit 102 through the user interface unit 114. The central computer system 106 can check to see if there is an available motorized transport unit. Once assigned to a given user, other users will not be able to control the already assigned transport unit. Workers, such as store associates, may also reserve multiple motorized transport units in order to accomplish a coordinated large job.
  • Locker Delivery: In some embodiments, one or more motorized transport units 102 may be used to pick, pack, and deliver items to a particular storage locker 132. The motorized transport units 102 can couple to and move the storage locker to a desired location. In some embodiments, once delivered, the requestor will be notified that the items are ready to be picked up, and will be provided the locker location and locker security code key.
  • Route Optimization: In some embodiments, the central computer system automatically generates a travel route for one or more motorized transport units through the shopping facility space. In some embodiments, this route is based on one or more of a user provided list of items entered by the user via a user interface unit 114; user selected route preferences entered by the user via the user interface unit 114; user profile data received from a user information database (e.g., from one of databases 126); and product availability information from a retail inventory database (e.g., from one of databases 126). In some cases, the route intends to minimize the time it takes to get through the facility, and in some cases, may route the shopper to the least busy checkout area. Frequently, there will be multiple possible optimum routes. The route chosen may take the user by things the user is more likely to purchase (in case they forgot something), and away from things they are not likely to buy (to avoid embarrassment). That is, routing a customer through sporting goods, women's lingerie, baby food, or feminine products, who has never purchased such products based on past customer behavior would be non-productive, and potentially embarrassing to the customer. In some cases, a route may be determined from multiple possible routes based on past shopping behavior, e.g., if the customer typically buys a cold Diet Coke product, children's shoes or power tools, this information would be used to add weight to the best alternative routes, and determine the route accordingly.
  • Store Facing Features: In some embodiments, these features enable functions to support workers in performing store functions. For example, the system can assist workers to know what products and items are on the shelves and which ones need attention. For example, using 3D scanning and point cloud measurements, the central computer system can determine where products are supposed to be, enabling workers to be alerted to facing or zoning of issues along with potential inventory issues.
  • Phone Home: This feature allows users in a shopping facility 101 to be able to contact remote users who are not at the shopping facility 101 and include them in the shopping experience. For example, the user interface unit 114 may allow the user to place a voice call, a video call, or send a text message. With video call capabilities, a remote person can virtually accompany an in-store shopper, visually sharing the shopping experience while seeing and talking with the shopper. One or more remote shoppers may join the experience.
  • Returns: In some embodiments, the central computer system 106 can task a motorized transport unit 102 to keep the returns area clear of returned merchandise. For example, the transport unit may be instructed to move a cart from the returns area to a different department or area. Such commands may be initiated from video analytics (the central computer system analyzing camera footage showing a cart full), from an associate command (digital or verbal), or on a schedule, as other priority tasks allow. The motorized transport unit 102 can first bring an empty cart to the returns area, prior to removing a full one.
  • Bring a Container: One or more motorized transport units can retrieve a movable item container 104 (such as a shopping cart) to use. For example, upon a customer or worker request, the motorized transport unit 102 can re-position one or more item containers 104 from one location to another. In some cases, the system instructs the motorized transport unit where to obtain an empty item container for use. For example, the system can recognize an empty and idle item container that has been abandoned or instruct that one be retrieved from a cart storage area. In some cases, the call to retrieve an item container may be initiated through a call button placed throughout the facility, or through the interface of a user interface unit 114.
  • Respond to Voice Commands: In some cases, control of a given motorized transport unit is implemented through the acceptance of voice commands. For example, the user may speak voice commands to the motorized transport unit 102 itself and/or to the user interface unit 114. In some embodiments, a voice print is used to authorize to use of a motorized transport unit 102 to allow voice commands from single user at a time.
  • Retrieve Abandoned Item Containers: This feature allows the central computer system to track movement of movable item containers in and around the area of the shopping facility 101, including both the sale floor areas and the back-room areas. For example, using visual recognition through store cameras 118 or through user interface units 114, the central computer system 106 can identify abandoned and out-of-place movable item containers. In some cases, each movable item container has a transmitter or smart device which will send a unique identifier to facilitate tracking or other tasks and its position using LED geo-location identification. Using LED geo-location identification with the Determining Location feature through smart devices on each cart, the central computer system 106 can determine the length of time a movable item container 104 is stationary.
  • Stocker Assistance: This feature allows the central computer system to track movement of merchandise flow into and around the back-room areas. For example, using visual recognition and captured images, the central computer system 106 can determine if carts are loaded or not for moving merchandise between the back room areas and the sale floor areas. Tasks or alerts may be sent to workers to assign tasks.
  • Self-Docking: Motorized transport units 102 will run low or out of power when used. Before this happens, the motorized transport units 102 need to recharge to stay in service. According to this feature, motorized transport units 102 will self-dock and recharge (e.g., at a MTU docking station 122) to stay at maximum efficiency, when not in use. When use is completed, the motorized transport unit 102 will return to a docking station 122. In some cases, if the power is running low during use, a replacement motorized transport unit can be assigned to move into position and replace the motorized transport unit with low power. The transition from one unit to the next can be seamless to the user.
  • Item Container Retrieval: With this feature, the central computer system 106 can cause multiple motorized transport units 102 to retrieve abandoned item containers from exterior areas such as parking lots. For example, multiple motorized transport units are loaded into a movable dispenser, e.g., the motorized transport units are vertically stacked in the dispenser. The dispenser is moved to the exterior area and the transport units are dispensed. Based on video analytics, it is determined which item containers 104 are abandoned and for how long. A transport unit will attach to an abandoned cart and return it to a storage bay.
  • Motorized Transport Unit Dispenser: This feature provides the movable dispenser that contains and moves a group of motorized transport units to a given area (e.g., an exterior area such as a parking lot) to be dispensed for use. For example, motorized transport units can be moved to the parking lot to retrieve abandoned item containers 104. In some cases, the interior of the dispenser includes helically wound guide rails that mate with the guide member 208 to allow the motorized transport units to be guided to a position to be dispensed.
  • Specialized Module Retrieval: This feature allows the system 100 to track movement of merchandise flow into and around the sales floor areas and the back-room areas including special modules that may be needed to move to the sales floor. For example, using video analytics, the system can determine if a modular unit it loaded or empty. Such modular units may house items that are of seasonal or temporary use on the sales floor. For example, when it is raining, it is useful to move a module unit displaying umbrellas from a back room area (or a lesser accessed area of the sales floor) to a desired area of the sales floor area.
  • Authentication: This feature uses a voice imprint with an attention code/word to authenticate a user to a given motorized transport unit. One motorized transport unit can be swapped for another using this authentication. For example, a token is used during the session with the user. The token is a unique identifier for the session which is dropped once the session is ended. A logical token may be a session id used by the application of the user interface unit 114 to establish the session id when user logs on and when deciding to do use the system 100. In some embodiments, communications throughout the session are encrypted using SSL or other methods at transport level.
  • Further Details of Some Embodiments
  • In accordance with some embodiments, further details are now provided for one or more of these and other features. By one approach, these teachings will accommodate providing a housing configured to contain a plurality of motorized transport units in a stacked relationship to one another, with a bottom-most one of the plurality of motorized transport units serving as a locomotion mechanism that selectively causes movement of the housing with the plurality of motorized transport units contained therein.
  • By one approach the aforementioned housing has a cylindrical form factor and includes a cylindrically-shaped chamber configured to receive the plurality of motorized transport units in the aforementioned stacked relationship to one another. These teachings will accommodate a very simple structure in these regards if desired. By one approach, for example, this housing includes no lifting mechanism to lift any of the motorized transport units into itself. These teachings will also accommodate the housing having no integral locomotion mechanism by which the housing can move itself.
  • By one approach the housing's cylindrically-shaped chamber includes at least one track formed therein to receive a corresponding part of each of the plurality of motorized transport units. The accommodated part can comprise, for example, the aforementioned guide member. So configured, the motorized transport units can engage that track (or tracks) to thereby lift themselves into the interior of the housing.
  • So configured, a plurality of motorized transport units can be readily and conveniently moved from one location to another. Using this approach can help preserve stored energy for the motorized transport units that are not serving as the locomotion mechanism that causes movement of the housing. This approach also creates a highly-visible structure that is considerably easier for a vehicle driver or pedestrian to note and avoid. Accordingly, such a housing can be particularly effective when used to transport motorized transport units to a parking lot when deploying those motorized transport units to, for example, retrieve abandoned shopping carts in that parking lot.
  • FIG. 6 provides an illustrative process 600 in these regards. It will be understood that the specifics of this example are intended to serve in an illustrative capacity and are not intended to specify any particular limitations with respect to these teachings. For the sake of this illustrative example it is presumed that the aforementioned central computer system 106 carries out this process 600.
  • At block 601 the central computer system 106 instructs a plurality of the aforementioned motorized transport units 102 to enter a housing that is configured to contain that plurality of motorized transport units 102 in a stacked relationship to one another. FIG. 7 provides an illustrative example of such a housing 700. In this example the housing 700 comprises a relatively simple construct that lacks, for example, any integral powered lifting mechanism to itself lift any of the plurality of motorized transport units 102 into itself and also includes no integral locomotion mechanism (such as an engine or motor) by which the housing can move itself.
  • In this illustrative example” the housing 700 comprises a cylinder 701 having, at least in part, a cylindrical form factor that further includes a cylindrically-shaped internal chamber that is open and accessible at the bottom of the housing 700. This cylindrically-shaped housing is configured to receive the motorized transport units 102 in the aforementioned stacked relationship to one another as described below in more detail.
  • In this example the housing 700 has a lower portion 702 and an upper portion 703. Generally speaking the lower portion 702 serves to include the cylindrically-shaped internal chamber and hence serves as a receiving area for the motorized transport units 102. The upper portion 702 may or may not be substantially hollow as well but does not serve to house any of the motorized transport units 102. One purpose served by the upper portion 702 is to increase the visible height of the housing 700 to thereby increase the visibility of the housing 700 when located in, for example, a parking lot for vehicles. If desired, the upper and/or lower portions 702 and 703 can be internally illuminated to thereby further increase the visibility of the housing 700.
  • Support panels 704 are disposed at the bottom of the housing 700 and serve to both support the weight of the housing 700 and to define a point of ingress and egress for motorized transport units 102. These support panels 704 include grooved tracks formed therein to receive guide members 208 that protrude outwardly of the motorized transport units 102 as described above.
  • By one approach, and as shown in FIG. 8, the housing 700 may further contain or otherwise support one or more sensors 801. This sensor is configured to sense at least one attribute of the local external environment of the housing 700. That information regarding the external environment of the housing 700 is provided by a corresponding control circuit 802 to a wireless interface 803 of choice (in this case, a Wi-Fi transceiver). So configured, that external environment information can be provided by the housing to the central computer system 106 and/or to one or more of the motorized transport units 102 that are contained within the housing 700.
  • These teachings will accommodate a variety of sensors as appropriate to the needs and/or opportunities posed by a particular application setting. Examples include, but are not limited to, temperature sensors, light sensors, cameras (including video cameras), motion sensors, pressure sensors, heat sensors, moisture sensors, acceleration sensors, chemical sensors, and so forth.
  • Referring to FIGS. 9 and 10, the housing 700 can also include one or more tracks formed in the aforementioned cylindrically-shaped chamber and hence on an interior wall of the housing 700. These tracks, by one approach, can more specifically comprise a groove having a rectangular shaped cross section and parallel sidewalls that are disposed orthogonally with respect to the interior wall of the housing 700. The width and depth of these grooves can be sized to accommodate the aforementioned guide members 208 of the motorized transport units 102. So configured, the guide members 208 are reliably and appropriately received within corresponding grooves and hence these grooves can therefore serve to both constrain a direction of movement of a motorized transport unit 102 within the cylindrically-shaped chamber and can also, at least in some cases, provide a support surface against which the motorized transport unit 102 can bias itself and hence effect movement within the cylindrically-shaped chamber.
  • At least one of these grooves can comprise a vertically-oriented track 901. By one approach this vertically-oriented track 901 extends from (or about from) the bottom of the cylindrically-shaped chamber to the top (or about the top) of the cylindrically-shaped chamber (and/or the lower portion 702 of the housing 700). By one approach the cylindrically-shaped chamber includes two such vertically-oriented tracks 901 disposed 180° apart from one another. By another approach the cylindrically-shaped chamber includes four such vertically-oriented tracks 901, each such track 901 being positioned 90° apart from its adjacent vertically-oriented tracks 901. As will be described below in more detail, such a vertically-oriented track 901 can serve to guide movement of a corresponding motorized transport unit 102.
  • At least another of these grooves can comprise a horizontally-oriented track 902. For many application settings there will likely be a plurality of such horizontally-oriented tracks 902 that are vertically displaced from one another in the cylindrically-shaped chamber. By one approach, and as illustrated, each such horizontally-oriented track 902 can comprise a relatively short track that extends to either side of a corresponding vertically-oriented track 901. In the illustrated example the horizontally-oriented track 902 extends a substantially equal distance on either side of the vertically-oriented track 901.
  • These teachings will accommodate a great variety of other approaches in these regards, however. By one approach, for example, the horizontally-oriented tracks 902 may only extend away from the vertically-oriented track 901 on one side of the vertically-oriented track 901 and not both sides. By another approach, and as another example, a single horizontally-oriented track 902 may extend around the entire interior periphery of the cylindrically-shaped chamber and hence form a horizontal ring that intersects each and every one of the vertically-oriented tracks 901 at that particular vertical level. These teachings will accommodate other variations as well as may suit the needs of a given application setting.
  • So configured, these horizontally-oriented tracks 902 can also serve to receive the aforementioned guide members 208 of a corresponding motorized transport unit 102. As will be described below, so positioning such a guide member 208 can serve to provide a surface against which the motorized transport unit 102 can bias itself to thereby facilitate moving upwardly or downwardly in the cylindrically-shaped chamber.
  • Referring now to FIGS. 11-17, one approach to employing such tracks to permit a motorized transport unit 102 to move itself upwardly in the cylindrically-shaped chamber will be described.
  • FIG. 11 illustrates a motorized transport unit 102 that is presently supported by the ground and that has positioned itself at the bottom of the cylindrically-shaped chamber of the housing 700. The motorized transport unit 102 has also positioned its guide members 208.1 and 208.2 (as located respectively on the upper body portion 206 and the lower body portion 204 of the motorized transport unit 102) in the aforementioned vertically-oriented track 901. (A typical motorized transport unit 102 will likely have more than these two guide members 208 and, similarly, a typical housing 700 will have more than the one vertically-oriented track 901 shown in FIG. 11. Only one such vertically-oriented track and two such guide members 208 are used in this illustrative example for the sake of simplicity and clarity.) It will be noted that the upper body portion 206 and the lower body portion 204 of the motorized transport unit 102 are fully (or at least mostly) telescoped inwardly towards a fully-contracted configuration.
  • FIG. 12 depicts the upper body portion 206 of the motorized transport unit 102 having telescoped upwardly within the cylindrically-shaped chamber. The guide member 208.1 on the upper body portion 206 remains in the vertically-oriented track 901 as does the guide member 208.2 on the lower body portion 204. Although the upper body portion 206 is now disposed upwardly within the cylindrically-shaped chamber, the lower body portion 204 remains in contact with the ground.
  • In FIG. 13 the upper body portion 206 has rotated counterclockwise a few inches (such as 1 to 6 inches) to thereby move the upper body portion's guide member 208.1 along a corresponding one of the horizontally-oriented tracks 1201. The lower body portion 204 did not rotate and its guide member 208.2 remains where it was in the vertically-oriented track 901.
  • In FIG. 14 the lower body portion 204 of the motorized transport unit 102 telescopes inwardly of the upper body portion 206 to thereby lift the lower body portion 204 off the ground. The upper body portion 206 is able to remain in its previously-attained vertical level due to the placement and lodging of the upper body portion's guide member 208.1 in the horizontally-oriented track. It may also be noted that the guide member 208.2 for the lower body portion 204 is now in line with another of the horizontally-oriented tracks 1401.
  • In FIG. 15 the lower body portion 204 of the motorized transport unit 102 has rotated counterclockwise to thereby move its guide member 208.2 along its corresponding horizontally-aligned track 1401. The upper body portion 206 and its guide member 208.1 has remained essentially stationary during that activity.
  • In FIG. 16 the upper body portion 206 of the motorized transport unit 102 has rotated clockwise to thereby move its guide member 208.1 along its corresponding horizontally-oriented track 1201 until the guide member 208.1 is again in the vertically-oriented track 901. The lower body portion 204 and its guide member 208.2 have remained essentially stationary during that activity.
  • In FIG. 17 the upper body portion 206 of the motorized transport unit 102 again telescopes outwardly/upwardly in order to move the upper body portion 206 further away from the lower body portion 204 within the cylindrically-shaped chamber. As this occurs the lower body portion 204 remains at its previously-attained vertical level due to interaction between its guide member 208.2 and the horizontally-oriented track 1401 that contains that guide member 208.2
  • So configured, a motorized transport unit 102 is able to itself move upwardly within the housing 700 to a desired or otherwise assigned vertical level. The use of additional guide members 208 can help assure greater stability with respect to such movement. A motorized transport unit 102 can lower itself in the housing 700 by simply reversing the above-described procedure until the lower body portion 204 contacts the ground.
  • Depending upon the relative sizing of the motorized transport units 102 and such a housing 700, for many application settings it will be useful to limit disposing no more than four such motorized transport units 102 within a given housing 700, one atop another. Such a limit can help prevent the center of gravity of a loaded housing 700 from being high enough to risk the housing 700 tipping over too easily during use.
  • With continued reference to FIG. 6 and with reference as well to FIG. 18, as noted above, at block 601 the central computer system 106 instructs a plurality of motorized transport units 102 to enter a housing 700 that is configured as described above. FIG. 18 generally illustrates this loading activity at the area denoted by “A.” These teachings are relatively flexible in these regards. By one approach, all of the motorized transport units 102 are loaded into the housing 700 at a shared location. By another approach one or more of the motorized transport units 102 is loaded at a different location than one or more of the other motorized transport units 102. The loading area “A” might comprise, for example, a protected area of a parking lot (protected, for example, by fencing or other barriers to avoid interaction with passersby) or an area in a shopping cart bay near the front entrance of a retail shopping facility, to note but two examples in these regards.
  • At block 602 the central computer system 106 instructs a bottom-most one of the plurality of motorized transport units 102.1 to serve as a locomotion mechanism that selectively causes movement of the housing 700 with the plurality of motorized transport units 102 contained therein. Being in contact with the ground, the bottom-most motorized transport unit 102.1 can effect the desired movement by simply itself moving in its ordinary fashion.
  • These teachings will accommodate a variety of follow-on actions as desired. By one optional approach, for example, at block 603 the central computer system 106 causes the housing 700 with the plurality of motorized transport units 102 contained therein to move into an action area. The area denoted by “B” in FIG. 18 illustrates such movement of the housing 700 towards an action area. An action area is simply an area where one or more of the motorized transport units 102 are to be deployed in favor of accomplishing some task. The specific nature, size, and scope of the action area will vary with the application setting. As one illustrative example in these regards, the action area can comprise a part of the parking lot having a number of abandoned shopping carts.
  • As the housing 700 moves, and as illustrated at optional block 604, the central computer system 106 can receive information regarding the external environment to the housing 700 and use that information to further control the selective movement of the housing 700 (via, for example, control of the bottom-most motorized transport unit 102.1). By one approach that information regarding the external environment is provided by one or more sensors 801 as may comprise a part of the housing 700 itself (as described above). By another approach, in lieu of the foregoing or in combination therewith, the central computer system 106 may receive such information via other sources such as, but not limited to, video cameras for the corresponding retail shopping facility that are located in the parking lot. So configured, and as one illustrative example in these regards, the central computer system 106 may alter the previously-assigned route for the housing 700 in order to avoid an obstacle that now newly constitutes a part of the external environment for the housing 700.
  • At optional block 605 the central computer system 106 can cause individual ones of the plurality of motorized transport units 102 to remove themselves from within the housing 700 and undertake at least one assigned task in the aforementioned action area. FIG. 18 generally illustrates such activity at “C.” In this example, the previously bottom-most of the motorized transport units 102.1 has removed itself from the housing 700. The second bottom-most motorized transport unit 102.2 then lowered itself as described above and also removed itself from the housing 700. The previously third bottom-most motorized transport unit 102.3 is now the current bottom-most motorized transport unit in the housing 700 and can either also remove itself from the housing 700 or can now serve as a means of locomotion for the housing 700. In this particular example it is presumed that this third bottom-most motorized transport unit 102.3 also removes itself from the housing 700 in the action area.
  • At optional block 606 the central computer system 106 causes a last remaining one of the plurality of motorized transport units (102.4 in FIG. 18 as appears in the area denoted by “D”) that is contained in the housing 700 to move the housing 700 outside of the action area. By one approach, for example, the housing 700 may be moved to its original location (or to another location of choice) where a new load of motorized transport units 102 can be stacked therein. By another approach the housing 700 may remain in or near the action area in order to later retrieve the previously-deployed motorized transport units 102 in order to then move those motorized transport units 102 to another action area and/or back to the original staging/loading area. Other options can be accommodated as appropriate to the needs of a particular application setting.
  • Such a housing 700 can be comprised of relatively inexpensive materials, such as many plastics, aluminum and other metals, various composite materials, and so forth as desired. The housing 700, lacking any moving mechanical parts and/or motors or the like, is relatively maintenance free and can likely serve in a typical application setting essentially full-time with very little downtime for maintenance being anticipated. By providing an opportunity to more safely move motorized transport units 102 to a given deployment area such a housing 700 can help to ensure less downtime as well for the motorized transport units 102 and reduced confusion and unwanted interaction with various persons in the vicinity.
  • Those skilled in the art will recognize that a wide variety of modifications, alterations, and combinations can be made with respect to the above described embodiments without departing from the scope of the invention, and that such modifications, alterations, and combinations are to be viewed as being within the ambit of the inventive concept.

Claims (15)

What is claimed is:
1. An apparatus comprising:
a housing configured to contain a plurality of motorized transport units in a stacked relationship to one another, an end-most one of the plurality of motorized transport units serving as a locomotion mechanism that selectively causes movement of the housing with the plurality of motorized transport units contained therein, wherein the housing includes no active mechanism to draw any of the plurality of motorized transport units into itself.
2. The apparatus of claim 1 wherein the end-most one of the plurality of motorized transport units comprises a bottom-most one of the plurality of motorized transport units.
3. The apparatus of claim 1 wherein the housing further comprises at least one sensor configured to gather information regarding an external environment to the housing.
4. The apparatus of claim 3 wherein the housing further comprises at least one interface configured to transmit the information regarding the external environment.
5. The apparatus of claim 1 wherein the housing includes no integral locomotion mechanism by which the housing can move itself.
6. The apparatus of claim 1 further comprising:
a central computer system configured to communicate with at least one of the plurality of motorized transport units to thereby control locomotion of the housing via the at least one of the plurality of motorized transport units.
7. A method comprising:
by a central computer system:
instructing a plurality of motorized transport units to enter a housing that is configured to contain the plurality of motorized transport units in a stacked relationship to one another;
instructing an end-most one of the plurality of motorized transport units to serve as a locomotion mechanism that selectively causes movement of the housing with the plurality of motorized transport units contained therein.
8. The method of claim 7 wherein the end-most one of the plurality of motorized transport units comprises a bottom-most one of the plurality of motorized transport units.
9. The method of claim 7 wherein the housing includes no active mechanism to draw any of the plurality of motorized transport units into itself.
10. The method of claim 7 wherein the housing further comprises at least one sensor configured to gather information regarding an external environment to the housing.
11. The method of claim 10 further comprising:
receiving the information regarding the external environment to the housing and using the information when controlling the selective movement of the housing with the plurality of motorized transport units contained therein.
12. The method of claim 7 wherein the housing includes no integral locomotion mechanism by which the housing can move itself.
13. The method of claim 7 further comprising:
causing the housing with the plurality of motorized transport units contained therein to move into an action area.
14. The method of claim 13 further comprising:
causing individual ones of the plurality of motorized transport units contained in the housing to remove themselves from within the housing and undertake at least one assigned task in the action area.
15. The method of claim 14 further comprising:
causing a last remaining one of the plurality of motorized transport units contained in the housing to move the housing outside of the action area.
US15/836,708 2015-03-06 2017-12-08 Method and apparatus for transporting a plurality of stacked motorized transport units Abandoned US20180099846A1 (en)

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