Patent Grant
11720115
The present teachings relate generally to personal vehicles, and more specifically to user control devices for vehicles that have heightened requirements for safety and reliability. Currently, personal vehicles can ascend and descend stairs. Such devices can include a plurality of wheels that can rotate about axes that are fixed with respect to a cluster arm. The cluster arm can rotate about an axis so that wheels rest on successive stairs. Currently, a user can board or disembark from an automobile or other enclosed vehicle and can load a personal vehicle into or out of the enclosed vehicle.
What is needed is a user control device that can automatically determine locations of key features of the environment of the personal vehicle and can automatically cause the personal vehicle to react to the key features.
The user control device of the present teachings can include, but is not limited to including, a user control processor (UCP) assist that can provide enhanced functionality to a user of a personal vehicle such as the transporter of the present teachings, for example, but not limited to, assisting a user of the transporter in avoiding obstacles, traversing doors, traversing stairs, traveling on elevators, and parking/transporting the transporter. The UCP assist can receive user input and/or input from power base processors (PBPs) that can control the transporter, and can enable the invocation of a processing mode that has been automatically or manually selected. A command processor can enable the invoked mode by generating movement commands based at least on previous movement commands, data from the user, and data from sensors. The command processor can receive user data that can include signals from a joystick that can provide an indication of a desired movement direction and speed of the transporter. User data can also include mode selections into which the transporter could be transitioned. Modes such as door mode, rest room mode, enhanced stair mode, elevator mode, mobile storage mode, and static storage/charging mode can be selected. Any of these modes can include a move-to-position mode, or the user can direct the transporter to move to a certain position. UCP assist can generate commands such as movement commands that can include, but are not limited to including, speed and direction, and the movement commands can be provided to the PBPs which can transmit this information to wheel motor drives and cluster motor drives.
Sensor data can be collected by sensor-handling processors that can include, but are not limited to including, a transporter geometry processor, a point cloud library (PCL) processor, a simultaneous location and mapping (SLAM) processor, and an obstacle processor. The movement commands can also be provided to the sensor handling processors. The sensors can provide environmental information that can include, for example, but not limited to, obstacles and geometric information about the transporter. The sensors can include at least one time-of-flight sensor that can be mounted anywhere on transporter. There can be multiple sensors mounted on the transporter. The PCL processor can gather and process environmental information, and can produce PCL data that can be processed by a PCL library.
The transporter geometry processor of the present teachings can receive transporter geometry information from the sensors, can perform any processing necessary to prepare the transporter geometry information for use by the mode-dependent processors, and can provide the transporter geometry information to mode-dependent processors. The geometry of the transporter can be used for automatically determining whether or not the transporter can fit in and/or through a space such as, for example, a stairway and a door. The SLAM processor can determine navigation information based on, for example, but not limited to, user information, environmental information, and movement commands. The transporter can travel in a path at least in part set out by navigation information. An obstacle processor can locate obstacles and distances to the obstacles. Obstacles can include, but are not limited to including, doors, stairs, automobiles, and miscellaneous features in the vicinity of the path of the transporter.
The method for obstacle processing of the present teachings can include, but is not limited to including, receiving movement commands and user information, receiving and segmenting PCL data, identifying at least one plane within the segmented PCL data, and identifying at least one obstacle within the at least one plane. The method for obstacle processing can further include determining at least one situation identifier based at least on the obstacles, user information, and movement commands, and determining the distance between the transporter and the obstacles based at least on the situation identifier. The method for obstacle processing can also include accessing at least one allowed command related to the distance, the obstacle, and the situation identifier. The method for obstacle processing can still further include accessing an automatic response to the allowed command, mapping the movement command with one of the allowed commands, and providing the movement command and the automatic response associated with the mapped allowed command to the mode-dependent processors.
The obstacles can be stationary or moving. The distance can include a fixed amount and/or can be a dynamically-varying amount. The movement command can include, but is not limited to including, a follow command, a pass-the-obstacle command, a travel-beside-the-obstacle command, and a do-not-follow-the-obstacle command. The obstacle data can be stored and retrieved locally and/or in a cloud-based storage area, for example. The method can optionally include storing the obstacle data and allowing access to the stored obstacle data by systems external to the transporter. The method for obstacle processing can optionally include collecting sensor data from a time-of-flight camera mounted on the transporter, analyzing the sensor data using a point cloud library (PCL), tracking the moving object using SLAM based on the location of the transporter, identifying a plane within the obstacle data using, and providing the automatic response associated with the mapped allowed command to the mode-dependent processors. The method for obstacle processing can optionally receive a resume command, and provide, following the resume command, a movement command and the automatic response associated with the mapped allowed command to the mode-dependent processors. The automatic response can include a speed control command.
The obstacle processor of the present teachings can include, but is not limited to including, a nav/PCL data processor. The nav/PCL processor can receive the movement commands and the user information, and can receive and segment PCL data from a PCL processor, identify a plane within the segmented PCL data, and identify obstacles within the plane. The obstacle processor can include a distance processor. The distance processor can determine a situation identifier based on user information, the movement command, and the obstacles. The distance processor can determine the distance between the transporter and the obstacles based at least on the situation identifier. The moving object processor and/or the stationary object processor can access the allowed command related to the distance, the obstacles, and the situation identifier. The moving object processor and/or the stationary object processor can access an automatic response from an automatic response list associated with the allowed command. The moving object processor and/or the stationary object processor can access the movement command and map the movement command with one of the allowed commands. The moving object processor and/or stationary object processor can provide movement commands and the automatic response associated with the mapped allowed command to the mode-dependent processors. The movement command can include a follow command, a pass command, a travel-beside command, a move-to-position command, and a do-not-follow command. The nav/PCL processor can store obstacles in local storage and/or on storage cloud, and can allow access to the stored obstacles by systems external to the transporter.
The method of the present teachings for navigating stairs can include, but is not limited to including, receiving a stair command, and receiving environmental information from sensors mounted on the transporter and/or the obstacle processor. The method for navigating stairs can include locating, based on the environmental information, staircases within environmental information, and receiving a selection of one of the staircases located by the sensors and/or the obstacle processor. The method for navigating stairs can also include measuring the characteristics of the selected staircase, and locating, based on the environmental information, obstacles, if any, on the selected staircase. The method for navigating stairs can also include locating, based on the environmental information, a last stair of the selected staircase, and providing movement commands to move the transporter on the selected staircase based on the measured characteristics, the last stair, and the obstacles, if any. The method for navigating stairs can continue providing movement commands until the last stair is reached. The characteristics can include, but are not limited to including, the height of the stair riser of the selected staircase, the surface texture of the riser, and the surface temperature of the riser. Alerts can be generated if the surface temperature falls outside of a threshold range and the surface texture falls outside of a traction set.
The method can optionally include locating the at least one staircase based on GPS data, building a map of the selected staircase using SLAM, saving the map, and updating the map while the transporter is moving. The method can optionally include accessing a geometry of the transporter, comparing the geometry to the at least one characteristic of the selected staircase, and modifying the movement of the transporter based on the comparing step. The characteristic can include, but is not limited to including, the height of at least one riser of the selected staircase, the surface texture of the at least one riser, and the surface temperature of the at least one riser. The method can optionally include generating an alert if the surface temperature falls outside of a threshold range and the surface texture falls outside of a traction set. The threshold range can include, but is not limited to including, temperatures below 33° F. The traction set can include, but is not limited to including, a carpet texture. The method can optionally include determining, based on the sensor data, the topography of an area surrounding the selected staircase, and generating an alert if the topography is not flat. The method can optionally include accessing a set of extreme circumstances.
The navigating stair processor of the present teachings can include, but is not limited to including, a staircase processor receiving at least one stair command included in user information, and a staircase locator receiving, through, for example, the obstacle processor, environmental information from sensors mounted on the transporter. The staircase locator can locate, based on environmental information, the staircases within the environmental information, and can receive the choice of a selected staircase. The stair characteristics processor can measure the characteristics of the selected staircase, and can locate, based on environmental information, obstacles, if any, on the selected staircase. The stair movement processor can locate, based on environmental information, a last stair of the selected staircase, and can provide to movement processor movement commands to instruct the transporter to move on the selected staircase based on the characteristics, the last stair, and the obstacles, if any. The staircase locator can locate staircases based on GPS data, and can build and save a map of the selected staircase. The map can be saved for use locally and/or by other devices unrelated to the transporter. The staircase processor can access the geometry of the transporter, compare the geometry to the characteristics of the selected staircase, and modify the navigation of the transporter based on the comparison. The staircase processor can optionally generate an alert if the surface temperature of the risers of the selected staircase falls outside of a threshold range and the surface texture of selected staircase falls outside of a traction set. The stair movement processor can determine, based on the environmental information, the topography of an area surrounding the selected staircase, and can generate an alert if the topography is not flat. The stair movement processor can access a set of extreme circumstances that can be used to modify the movement commands generated by the stair movement processor.
When the transporter traverses the threshold of a door, where the door can include a door swing, a hinge location, and a doorway, the method of the present teachings for navigating a door can include receiving and segmenting environmental information from sensors mounted on the transporter. The environmental information can include the geometry of the transporter. The method can include identifying a plane within the segmented sensor data, and identifying the door within the plane. The method for navigating a door can include measuring the door based on the environmental information. The method for navigating a door can include determining the door swing and providing movement commands to move the transporter for access to a handle of the door. The method for navigating a door can include providing movement commands to move the transporter away from the door as the door opens by a distance based on the door measurements. The method for navigating a door can include providing movement commands to move the transporter forward through the doorway. The transporter can maintain the door in an open position if the door swing is towards the transporter.
The method of the present teachings for processing sensor data can determine, through information from the sensors, the hinge side of the door, the direction and angle of the door, and the distance to the door. The movement processor of the present teachings can generate commands to PBPs such as start/stop turning left, start/stop turning right, start/stop moving forward, start/stop moving backwards, and can facilitate door mode by stopping the transporter, cancelling the goal that the transporter can be aiming to complete, and centering the joystick. The door processor of the present teachings can determine whether the door is, for example, a push to open, a pull to open, or a slider. The door processor can determine the width of the door based on the current position and orientation of the transporter, and can determine the x/y/z location of the door pivot point. If the door processor determines that the number of valid points in the image of the door derived from the set of obstacles and/or PCL data is greater than a threshold, the door processor can determine the distance from the transporter to the door. The door processor can determine if the door is moving based on successive samples of PCL data from the sensor processor. In some configurations, the door processor can assume that a side of the transporter is even with the handle side of the door, and can use that assumption, along with the position of the door pivot point, to determine the width of the door. The door processor can generate commands to move the transporter through the door based on the swing and the width of the door. The transporter itself can maintain the door in an open state while the transporter traverses the threshold of the door.
In some configurations, the transporter can automatically negotiate the use of rest room facilities. The doors to the rest room and to the rest room stall can be located as discussed herein, and the transporter can be moved to locations with respect to the doors as discussed herein. Fixtures in the rest room can be located as obstacles as discussed herein, and the transporter can be automatically positioned in the vicinity of the fixtures to provide the user with access to, for example, the toilet, the sink, and the changing table. The transporter can be automatically navigated to exit the rest room stall and the rest room through door and obstacle processing discussed herein. The transporter can automatically traverse the threshold of the door based on the geometry of the transporter.
The method of the present teachings for automatically storing the transporter in a vehicle, such as, for example, but not limited to, an accessible van, can assist a user in independent use of the vehicle. When the user exits the transporter and enters the vehicle, possibly as the vehicle's driver, the transporter can remain parked outside of the vehicle. If the transporter is to accompany the user in the vehicle for later use, the mobile park mode of the present teachings can provide movement commands to the transporter to cause the transporter to store itself either automatically or upon command, and to be recalled to the door of the vehicle as well. The transporter can be commanded to store itself through commands received from external applications, for example. In some configurations, a computer-driven device such as a cell phone, laptop, and/or tablet can be used to execute one or more external applications and generate information that could ultimately control the transporter. In some configurations, the transporter can automatically proceed to mobile park mode after the user exits the transporter. Movement commands can include commands to locate the door of the vehicle at which the transporter will enter to be stored, and commands to direct the transporter to the vehicle door. Mobile park mode can determine error conditions such as, for example, but not limited to, if the vehicle door is too small for the transporter to enter, and mobile park mode can alert the user of the error condition through, for example, but not limited to, an audio alert through audio interface and/or a message to one or more external applications. If the vehicle door is wide enough for the transporter to enter, mobile park mode can provide vehicle control commands to command the vehicle to open the vehicle door. Mobile park mode can determine when the vehicle door is open and whether or not there is space for the transporter to be stored. Mobile park mode can invoke the method for obstacle processing to assist in determining the status of the vehicle door and if there is room in the vehicle to store the transporter. If there is enough room for the transporter, mobile park mode can provide movement commands to move the transporter into the storage space in the vehicle. Vehicle control commands can be provided to command the vehicle to lock the transporter into place, and to close the vehicle door. When the transporter is again needed, one or more external applications, for example, can be used to bring the transporter back to the user. The status of the transporter can be recalled, and vehicle control commands can command the vehicle to unlock the transporter and open the door of the vehicle. The vehicle door can be located and the transporter can be moved through the vehicle door and to the passenger door to which it had been summoned by, for example, one or more external applications. In some configurations, the vehicle can be tagged in places such as, for example, the vehicle entry door where the transporter can be stored.
The method of the present teachings for storing/recharging the transporter can assist the user in storing and possibly recharging the transporter, possibly when the user is sleeping. After the user exits the transporter, commands can be initiated by one or more external applications, to move the perhaps riderless transporter to a storage/docking area. In some configurations, a mode selection by the user while the user occupies the transporter can initiate automatic storage/docking functions after the user has exited the transporter. When the transporter is again needed, commands can be initiated by one or more external applications to recall the transporter to the user. The method for storing/recharging the transporter can include, but is not limited to including, locating at least one storage/charging area, and providing at least one movement command to move the transporter from a first location to the storage/charging area. The method for storing/recharging the transporter can include locating a charging dock in the storage/charging area and providing at least one movement command to couple the transporter with the charging dock. The method for storing/recharging the transporter can optionally include providing at least one movement command to move the transporter to the first location when the transporter receives an invocation command. If there is no storage/charging area, or if there is no charging dock, or if the transporter cannot couple with the charging dock, the method for storing/recharging the transporter can optionally include providing at least one alert to the user, and providing at least one movement command to move the transporter to the first location.
The method of the present teachings for negotiating an elevator while maneuvering the transporter can assist a user in getting on and off the elevator in the transporter. When the elevator is, for example, automatically located, and when the user selects the desired elevator direction, and when the elevator arrives and the door opens, movement commands can be provided to move the transporter into the elevator. The geometry of the elevator can be determined and movement commands can be provided to move the transporter into a location that makes it possible for the user to select a desired activity from the elevator selection panel. The location of the transporter can also be appropriate for exiting the elevator. When the elevator door opens, movement commands can be provided to move the transporter to fully exit the elevator.
The present teachings will be more readily understood by reference to the following description, taken with the accompanying drawings, in which:
FIGS. 6B1 and 6B2 are schematic representations of the manual interface cover and UCP assist connection of the present teachings;
FIGS. 6B3 and 6B4 are schematic representations of the UCP assist holder of the present teachings;
FIGS. 6C1 and 6C2 are schematic representations of the UCP assist connection device of the present teachings;
FIGS. 6D1 and 6D2 are schematic representations of the mounting board for the UCP assist connection device of the present teachings;
FIGS. 6D3 and 6D4 are schematic representations of the UCP assist connection device mounted on the mounting board for the UCP assist connection device;
FIGS. 6D5 and 6D6 are schematic representations of another configuration of the UCP assist connection device of the present teachings;
FIGS. 11A1-11A2 are schematic block diagrams of a method of obstacle detection of the present teachings;
FIGS. 14A1-14A2 are schematic block diagrams of a method of door traversal of the present teachings;
FIGS. 16A1-16A2 are schematic block diagrams of a method of mobile storage of the present teachings;
The configuration of a user control device of the present teachings is discussed in detail below in relation to a transporter, for example, but not limited to, a wheelchair. Various types of transporters can interface with the user control device. The user control device can communicate with the transporter via electrical interface(s) that can facilitate communication and data processing among the user interface device and controllers that can control the movement of the transporter. The user control device can perform automated actions based on the environment in which the transporter operates and the user's desired movement of the transporter. External applications can enable monitoring and control of the transporter.
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Referring now primarily to FIGS. 6B1 and 6B2, manual/visual interface holder 145C can include, but is not limited to including, visual interface viewing window 137A (FIG. 6B1) and manual interface mounting cavity 133B (FIG. 6B1) available on first side 133E (FIG. 6B1) of manual/visual interface holder 145C. Connector 133C (FIG. 6B2) can be provided on second side 133D (FIG. 6B2) of manual/visual interface holder 145C. Any of viewing window 137A (FIG. 6B1), manual interface mounting cavity 133B (FIG. 6B1), and connector 133C (FIG. 6B2) can be located on any part of manual/visual interface holder 145C, or can be absent altogether. Manual/visual interface holder 145C, visual interface viewing window 137A (FIG. 6B1), manual interface mounting cavity 133B (FIG. 6B1), and connector 133C (FIG. 6B2) can be any size. Manual/visual interface holder 145C can be constructed of any material suitable for mounting visual interface viewing window 137A (FIG. 6B1), manual interface mounting cavity 133B (FIG. 6B1), and connector 133C (FIG. 6B2). Angle 145M can be associated with various orientations of UCD holder 133A and thus can be various values. UCD holder 133A can have a fixed orientation or can be hinged.
Referring now primarily to FIGS. 6B3 and 6B4, UCP assist holder 145A can include, but is not limited to including, filter cavity 136G and lens cavity 136F providing visibility to, for example, but not limited to, a time-of-flight sensor optical filter and lens such as, for example, but not limited to, OPT8241 3D time-of-flight sensor by TEXAS INSTRUMENTS®. UCP assist holder 145A can be any shape and size and can be constructed of any material, depending on the mounting position on transporter 120 and the sensors, processors, and power supply, for example, provided within UCP assist holder 145A. Rounded edges on cavities 136G and 136F, on casing 136E, as well as on holder 145A can be replaced by any shape of edge. Cavity 136H can house controlling electronics.
Referring now primarily to FIGS. 6C1 and 6C2, connector 133C can include, but is not limited to including, connector lead 133G (FIG. 6C1) on connector first side 133H (FIG. 6C1) and connector pins 133F that can protrude from connector second side 1331 (FIG. 6C2). Connector lead 133G (FIG. 6C1) and connector pins 133F can be any size and shape, and there can be any number of connector leads 133G (FIG. 6C1) and connector pins 133F. Further, there can be any number of connectors 133C.
Referring now primarily to FIGS. 6D1 and 6D2, mounting board 134J can include, but is not limited to including, pin holes 134D, mounting holes 134C, and alignment features 134B. Mounting board first side 134A can be identical to mounting board second side 134E, or mounting board first side 134A can have different features from mounting board second side 134E. Mounting holes 134C, pin holes 134D, and alignment features 134B can be any size and/or shape, and there can be any number of mounting holes 134C, pin holes 134D and alignment features 134B. Mounting board 134J can be used to mount connector 133C (FIGS. 6C1/6C2). In some configurations, mounting board 134J can include pin holes 134D that can accommodate connector pins 133F (FIGS. 6C1/6C2). Mounting board 134J can be provided in multiple pieces and shapes to accommodate connector(s) 133C (FIGS. 6C1/6C2).
Referring now to FIGS. 6D3 and 6D4, connector pins 133F can be inserted into pin holes 134D to mount connector 133C on mounting board 134J. Connector leads 133G can project from mounting board first side 134A (FIG. 6D3), and connector pins 133F can protrude from mounting board second side 134E (FIG. 6D4). Connector 133C can be positioned anywhere on mounting board 134J, and can cross multiple mounting boards 134J. Multiple of connectors 133C can be mounted on mounting board 134J.
Referring now primarily to FIGS. 6D5 and 6D6, in some configurations, second configuration connector 139D can be mounted on mounting board 134J (FIG. 6D1) to mount UCP assist holder 145A (
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Referring now to FIGS. 16A1 and 16A2, method 1051 for automatically storing transporter 120 in a vehicle, such as, for example, but not limited to, an accessible van, can assist a user in independent use of the vehicle. When the user exits transporter 120 (
Continuing to refer primarily to FIGS. 16A1 and 16A2, method 1051 for automatically storing transporter 120 in a vehicle can include, but is not limited to including, providing 1551 at least one movement command 630 (
Continuing to refer primarily to FIGS. 16A1 and 16A2, the at least one movement command 630 (
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Configurations of the present teachings are directed to computer systems for accomplishing the methods discussed in the description herein, and to computer readable media containing programs for accomplishing these methods. The raw data and results can be stored for future retrieval and processing, printed, displayed, transferred to another computer, and/or transferred elsewhere. Communications links can be wired or wireless, for example, using cellular communication systems, military communications systems, and satellite communications systems. Parts of system 200A (
The present configuration is also directed to software and/or firmware and/or hardware for accomplishing the methods discussed herein, and computer readable media storing software for accomplishing these methods. The various modules described herein can be accomplished by the same CPU, or can be accomplished by different CPUs tightly or loosely coupled. The various modules can be accomplished by specially-designed integrated circuits. In compliance with the statute, the present configuration has been described in language more or less specific as to structural and methodical features. It is to be understood, however, that the present configuration is not limited to the specific features shown and described, since the means herein disclosed comprise various forms of putting the present teachings into effect.
Methods 650 (FIGS. 11A1-11A2), 750 (
While the present teachings have been described above in terms of specific configurations, it is to be understood that they are not limited to these disclosed configurations. Many modifications and other configurations will come to mind to those skilled in the art to which this pertains, and which are intended to be and are covered by both this disclosure and the appended claims. It is intended that the scope of the present teachings should be determined by proper interpretation and construction of the appended claims and their legal equivalents, as understood by those of skill in the art relying upon the disclosure in this specification and the attached drawings.
This application is a Continuation of U.S. patent application Ser. No. 15/486,980, filed Apr. 13, 2017 and entitled User Control Device for a Transporter, now U.S. Publication No. US-2017-0300058-A1, published Oct. 19, 2017, which claims the benefit of U.S. Provisional Application Ser. No. 62/322,522, filed Apr. 14, 2016, entitled USER CONTROL DEVICE FOR A TRANSPORTER, which is incorporated herein by reference in its entirety.
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| Number | Date | Country | |
|---|---|---|---|
| 20210096577 A1 | Apr 2021 | US |
| Number | Date | Country | |
|---|---|---|---|
| 62322522 | Apr 2016 | US |
| Number | Date | Country | |
|---|---|---|---|
| Parent | 15486980 | Apr 2017 | US |
| Child | 17014770 | US |
