WO2024253694A1 - Composants électroniques mobiles - Google Patents

Composants électroniques mobiles Download PDF

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Publication number
WO2024253694A1
WO2024253694A1 PCT/US2023/068207 US2023068207W WO2024253694A1 WO 2024253694 A1 WO2024253694 A1 WO 2024253694A1 US 2023068207 W US2023068207 W US 2023068207W WO 2024253694 A1 WO2024253694 A1 WO 2024253694A1
Authority
WO
WIPO (PCT)
Prior art keywords
robot
electronic component
surface marking
actuator
front wheels
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.)
Ceased
Application number
PCT/US2023/068207
Other languages
English (en)
Inventor
Borja Navas Sanchez
Isidoro Maya Agudo
Francisco Javier ALFARO REYES
Arnau JANER I SERRAMIA
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.)
Hewlett Packard Development Co LP
Original Assignee
Hewlett Packard Development Co LP
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
Application filed by Hewlett Packard Development Co LP filed Critical Hewlett Packard Development Co LP
Priority to EP23738401.1A priority Critical patent/EP4724278A1/fr
Priority to PCT/US2023/068207 priority patent/WO2024253694A1/fr
Publication of WO2024253694A1 publication Critical patent/WO2024253694A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet

Definitions

  • Surface marking robots may be used to draw or print lines or patterns on a surface.
  • surface marking robots may include a pen or a printhead to apply a printing fluid on a surface in accordance with a plot or an image to be printed.
  • surface marking robots may print on sloped surfaces.
  • FIG. 1 shows a surface marking robot comprising a movable electronic component and a weight distribution system, according to an example of the present disclosure
  • FIG. 2 shows a surface marking robot including an actuator to move an electronic component from a first position to a second position, according to an example
  • FIG. 3 shows a surface marking robot in which multiple positions of an electronic component with respect to a set of front wheels of the printing system are represented, according to an example
  • FIG. 4 shows an emergency stop method for a surface marking robot, according to an example
  • FIG. 5 shows a side view of a surface marking robot moving over a sloped surface, according to an example of the present disclosure.
  • the terms “a” and “an” are intended to denote at least one of a particular element.
  • the term “includes” means includes but not limited to, the term “including” means including but not limited to.
  • the term “based on” means based at least in part on.
  • Surface marking robots may print onto a wide variety of surfaces.
  • Surface marking robots dispense droplets of printing fluid as the surface marking robots move over a surface.
  • the surface marking robot which is movable relative to the surface, may include an advance mechanism to generate traction on a component of the surface marking robot which is in contact with the surface (e.g., a plurality of wheels or closed belts).
  • the advance mechanism may be mechanically connected to a plurality of wheels such that a force generated by the advance mechanism is transmitted to the wheels such that the surface marking robot moves relative to the surface.
  • the advance mechanism may be in the form of a drive motor, such as an electric motor.
  • emergency stops may be triggered by emergency stop signals received by a controller of a surface marking robot.
  • the emergency stop signal may be associated with an excessive temperature in a component of the robot, a determination of an abnormal state for a component of the robot, or a lack of electrical power in the robot, among others.
  • the emergency stop signal may be issued by users at their discretion (for instance, by transmitting the emergency stop signal to a receiver operatively connected to the controller of the robot).
  • operative mode refers to a mode of the robot in which the functionalities of the robot are not limited or constrained.
  • non-operative mode refers to a mode in which at least some of the functionalities of the robot are limited and/or the robot is set with a predefined configuration (for instance, the robot is controlled to be stationary such that the robot does not move over the surface).
  • the non-operative mode at least some of the components of the robot do not receive electrical power from a power source of the surface marking robot.
  • all the components may be subjected to a cut-off state of power. Eventually, the cut-off state may cause the robot to become stationary, as explained above.
  • Emergency stops may damage the surface marking robot itself or external elements.
  • a speed of the surface marking robot may cause the surface marking robot to become unstable.
  • the surface marking robot may accelerate in the non-operative mode while moving down a sloped surface, thereby compromising the integrity of the robot itself and/or elements located nearby.
  • the speed of the surface marking robot reached while being in a non-operative mode may depend on the speed of the surface marking robot prior to the emergency stop and a surface profile associated with the surface where the robot is disposed on. Examples of characteristics include a friction coefficient of the surface, a slope of the surface, and a roughness level of the surface.
  • a surface marking robot may roll over or overturn upon exceeding a threshold speed.
  • the threshold speed may vary based on the characteristics of the surface where the robot is disposed.
  • a threshold speed at which the marking robot is to roll over or overturn may be different when moving across a slanted surface than when moving across a substantially flat surface.
  • surface marking robots may exceed the threshold speed while the robot may move down a sloped surface while being in the non-operative mode.
  • damage on the surface marking robot and/or external components resulting from emergency stops may be reduced by enhancing the stability of the surface marking robot in the nonoperative mode.
  • surface marking robots may be designed with a small form factor and the location of some of the electronic components may render the surface marking robot unstable under some conditions.
  • a surface marking robot may overturn or roll over upon exceeding a maximum allowable speed.
  • maximum allowable speed refers to a maximum speed beyond which a surface marking robot is to roll over or overturn.
  • a surface marking robot 100 comprising a set of front wheels 110 and a set of rear wheels 120 is shown.
  • the set of front wheels 110 and/or the set of rear wheels 120 may comprise at least one drive wheel.
  • the wheels may be of a different type. Examples of wheels comprise caster wheels, drive wheels, idle wheels, belt-based wheels, and the like.
  • the surface marking robot 100 may include a printhead (not shown in FIG. 1 ) to dispense printing fluid droplets on a surface where the surface marking robot 100 is disposed on.
  • the word “printhead” refers generally to a mechanism for the ejection of printing liquid.
  • printheads are drop-on-demand printheads, such as piezoelectric printheads, thermo resistive printheads, or valve-based printheads.
  • the surface marking robot 100 may be used to perform a printing operation in which the surface marking robot 100 dispenses printing fluid on the surface in accordance with a pattern as the surface marking robot 100 moves over the surface.
  • printing fluid refers generally to any substance that can be applied upon a surface by a printhead during operation, including but not limited to inks, primers and overcoat materials (such as a varnish), water, and solvents other than water.
  • the surface marking robot 100 is represented with a center of gravity 101 illustrating an average location of the weight of an object.
  • the center of gravity 101 in FIG. 1 is located in between the set of front wheels 110 and the set of rear wheels 120. Based on the location of the center of gravity with respect to the set of front wheels 110 and the set of rear wheels 120, a maximum allowable speed for the surface marking robot 100 may be defined.
  • the surface marking robot 100 further comprises an electronic component 130 and a weight distribution system 140.
  • the weight distribution system 140 is mechanically connected to the electronic component 130 such that upon receiving an emergency stop signal, the weight distribution system 140 adjusts a location of the electronic component 130 with respect to the wheels such that the maximum allowable speed for the surface marking robot 100 is increased.
  • the center of gravity 101 of the surface marking robot 100 may vary. Accordingly, the adjustment of the location of the center of gravity 101 may increase the maximum allowable speed, thereby causing the stability of the surface marking robot to increase while being in the nonoperative mode. As a result, during the non-operative mode, damage on the surface marking robot 100 and/or external elements located nearby is reduced or avoided.
  • the term “electronic components” refers to a set of components comprising at least one of a printhead, a printing fluid supply, a printing fluid pump, a battery, a sensor module, wiring, a circuit board, and a drive motor.
  • the electronic components may be mechanically connected to the actuator via a rod, a rail, a frame, or a similar support structure that allows the electronic component to be moved by the actuator.
  • adjusting the location of the electronic component 130 of the surface marking robot 100 may involve moving the electronic component from a first position to a second position.
  • the movement towards the second position includes a horizontal component.
  • the weight distribution system 140 may adjust the location of the electronic component 130 such that the surface marking robot 100 has enhanced stability in the non-operative mode, thereby reducing the negative impacts of an acceleration of the robot due to the surface profile while the robot is in the non-operative mode.
  • a surface marking robot 200 comprising a weight distribution system 240 including an actuator 241 and a controller 242 is shown.
  • the surface marking robot 200 further comprises a set of front wheels 110, a set of rear wheels 120, and an electronic component 130.
  • elements previously explained in reference to the surface marking robot 100 of FIG. 1 have been numbered using the same reference numerals.
  • the set of front wheels 110 and the set of rear wheels 120 have been represented using a dash- dotted line.
  • the actuator 241 of the weight distribution system 240 is mechanically connected to the electronic component 130 and the controller 242 is operatively connected to the actuator 241 .
  • the actuator 241 is to move the electronic component 130 along a longitudinal axis of the robot 200.
  • the actuator 241 is to move the electronic component from a first position 231 a to a second position 231 b with respect to the set of front wheels 110.
  • the movement from the first position 231a to the second position 231 b is represented by arrow A, which is parallel to the longitudinal axis of the surface marking robot 200.
  • the electronic component is in the second position 231 b, and the first position is represented using a dashed line.
  • adjusting a position of the electronic component 130 with respect to the wheels of the surface marking robot 200 may enhance the stability of the surface marking robot 200 when the robot 200 is in a non-operative mode.
  • the controller 242 of the weight distribution system 240 is configured to control the actuator 241 to move the electronic component 130 from the first position 231a (represented in dashed lines) to the second position 231 b with respect to the set of front wheels 110 in response to an emergency stop signal. Accordingly, the movement of the electronic component 130 along the longitudinal axis of the robot 200 results in a change of a center of gravity 201 of the surface marking robot 200.
  • the center of gravity when the electronic component 130 is in the first position 231a is represented in a dashed line in FIG. 2.
  • the actuator 241 may be a spring-loaded actuator 241 .
  • Spring-loaded actuators may allow for moving the electronic component 130 to the second position 231 b even when the emergency stop results in a cut-off of the power in the surface marking robot 200.
  • alternative types of actuators such as pneumatic actuators, solenoid actuators, or electric motors.
  • a surface marking robot 300 including an electronic component A in a second position 331b is shown.
  • a first position 331a of the electronic component A has been represented in a dashed line.
  • the surface marking robot 300 further comprises a weight distribution system 340, which may correspond to any of the weight distribution systems 140 and 240 previously explained in reference to FIGs. 1 and 2.
  • the stability of the surface marking robot 300 may be enhanced. For instance, upon receipt of an emergency stop signal, the weight distribution system 340 may cause the electronic component A to move to a second position associated with improved stability. In the example of FIG.
  • a set of front wheels 110 and a set of rear wheels 120 of the surface marking robot 300 are spaced apart by a distance 315 and a travel distance 316 for the electronic component A from the first position 331a to the second position 331 b are represented.
  • the travel distance 316 is less than the distance 315.
  • the travel distance 316 may be set such that a center of gravity (not represented in FIG. 3) resulting from the movement of the electronic component A is closer to the set of rear wheels 120 in the second position 331 b than in the first position 331a.
  • the electronic component A is closer to the set of front wheels 120 in the first position than in the second position 331 b.
  • the travel distance 316 from the first position 331a to the second position 331 b may be set such that a range of movement of the electronic component A does not greatly reduce the space available in the surface marking robot 300.
  • the travel distance 316 may be a distance within a range from 15 mm to 60 mm, such as a range from 20 mm to 40 mm, or a travel distance of 45 mm.
  • the electronic component A may weigh about 800 grams and the overall weight of the surface marking robot 300 may be about 12 kilograms. In other examples, the electronic component may represent 10% of the overall weight of the surface marking robot 300.
  • a surface marking robot e.g., surface marking robot 100, 200, and 300
  • a sensor module including sensors to determine a position of the electronic component with respect to the set of front wheels (e.g., wheels 110).
  • the sensor (or sensor) of the sensor module may be part of the movable electronic component or may be arranged in a different location of the surface marking robot (e.g., a housing of the surface marking robot).
  • the controller issues a signal associated with a non-operative mode of the surface marking robot upon the electronic component being away from the first position.
  • the sensor when disabling the power in the non-operative mode, the sensor may be provided in the form of a mechanical sensor, and the non-operative mode may be represented using a physical element on an external surface of the surface marking robot.
  • the physical element may be in the form of a display showing a first color (e.g., green) while the surface marking robot is in the operative mode and a second color (e.g., red) when the surface marking robot is in the non-operative mode.
  • a controller operatively connected to a sensor of the surface marking robot may issue a subsequent signal associated with an operative mode of the surface marking robot upon the electronic component reaching the first position with the surface marking robot in the non-operative mode.
  • the physical element may change from the second color (e.g., red) to the first color (green) upon the electronic component reaching the first position.
  • the functionalities of the surface marking robot are not limited or constrained.
  • the controller of the surface marking robot is configured to control the actuator to move the electronic component to the first position in response to a reload signal.
  • the reload signal may be issued to the controller upon pressing a button on the surface marking robot or upon issuing the signal via a remote device (e.g., a smartphone, a remote controller, or a computer).
  • the surface marking robots 100, 200, 300 and examples thereof previously explained in reference to FIGs. 1 to 3 may be used in an emergency stop method.
  • an emergency stop may be triggered by an emergency stop signal, which may be issued by the robot itself or by an external element (e.g., a smartphone, a remote controller, or a computer) operatively connected to a controller of the surface marking robot.
  • an emergency stop signal may be issued by the robot itself or by an external element (e.g., a smartphone, a remote controller, or a computer) operatively connected to a controller of the surface marking robot.
  • the emergency stop method 400 may be implemented by a surface marking robot comprising a set of front wheels, such as the surface marking robots previously explained in reference to FIGs. 1 to 3.
  • the surface marking robot is provided with enhanced stability while being in a non-operative mode in which at least some of the functionalities of the robot are limited.
  • method 400 comprises receiving an emergency stop signal.
  • the signal may be received by a controller, such as the controller 242 in FIG. 2.
  • the emergency stop signal may be indicative of an abnormal operation in at least one component of the surface marking robot or may be issued by an external device, as previously explained.
  • method 400 comprises moving, in a direction having a component in a longitudinal axis of the robot, an electronic component of the surface marking robot from a first position to a second position with respect to the set of front wheels.
  • the surface marking robot is provided with enhanced stability as a result of a change in the location of the center of gravity in the surface marking robot.
  • the second location may be selected such that the surface marking robot is more stable when at least some of its functionalities are limited.
  • a movement downhill of the surface marking robot in the non-operative mode may cause the robot to accelerate as a result of the gravity force exerted thereon.
  • block 420 may comprise moving the electronic component toward the second set of wheels. In other words, the second position may be closer to the set of rear wheels than the first position.
  • method 400 may further comprise disabling at least some of the functions of the surface marking robot.
  • the functions may be related to the operation of the electronic components.
  • examples of electronic components comprise a printhead, a printing fluid supply, a printing fluid pump, a battery, a sensor module, wiring, a circuit board, and a drive motor.
  • disabling at least some of the functions may comprise disabling the power of the electronic components.
  • the disabling may at least overlap to block 420 of method 400. In other words, while disabling the capabilities the actuator may cause the electronic component to start moving toward the second position.
  • method 400 may further comprise moving the electronic component back to the first position in response to a reload signal.
  • the surface marking robot Upon the electronic component is back at the first position, the surface marking robot is back in the operative mode and the functionalities that were limited during the non-operative mode are enabled back.
  • the emergency stop signal received at block 410 may be associated with a surface profile.
  • the term “surface profile” refers to data related to a surface on which the surface marking robot is disposed, the data including at least one of a slope level of the surface, a coefficient of friction, and a roughness level.
  • the second position for the electronic component may be determined based on the surface profile. Accordingly, when having the surface marking robot on a surface with, for instance, a greater slope, the second position may be selected such that a movement of the electronic component has a component in the longitudinal axis of the robot and a component in a vertical axis perpendicular to the longitudinal axis of the robot.
  • the stability of the surface marking robot may be further enhanced compared to a movement along a longitudinal axis of the robot.
  • the second position may be determined such that surface profiles associated with a greater slope result in a movement of the electronic component having a greater component in a vertical axis.
  • FIG. 5 a side view of a surface marking robot 500 moving over a sloped surface 550 is shown.
  • the surface marking robot 500 is moving down the sloped surface 550 in a direction indicated by arrow X.
  • the surface marking robot 500 comprises a set of front wheels 510 and a set of rear wheels 520.
  • elements of the surface marking robot 500 which not visible are represented in dashed lines, namely an electronic component 530 and a weight distribution system comprising an actuator 541 mechanically connected to the electronic component 530 and a controller 542 operatively connected to the actuator 541.
  • the actuator 541 which may correspond to the examples previously described in reference to FIGs. 1 to 4, is to move the electronic component 530 along a longitudinal axis of the robot 500.
  • the longitudinal axis of the robot 500 is parallel to the direction indicated by arrow X.
  • the maximum allowable speed in the operative mode of the surface marking robot 500 may be a speed greater than 0.6 m/s (for instance, 0.8 m/s or 1 .2 m/s).
  • controller 542 of the robot 500 is configured to control the actuator 541 to adjust a position of the electronic component with respect to the set of front wheels 510 and the set of rear wheels 520 in response to an emergency stop signal.
  • the adjustment of the position may allow the surface marking robot to increase its maximum allowable speed, thereby rendering the surface marking robot more stable during a non-operative state in which at least some of the functionalities of the robot 500 are limited.
  • the surface marking robot 500 has a center of gravity 501 located in between the set of front wheels 510 and the set of rear wheels 520.
  • the functionalities of the robot 500 may be limited, such as the braking system.
  • the robot 500 may be unable to actively reduce its speed.
  • the slope of the sloped surface 550 the robot may even accelerate.
  • the use of the weight distribution system including the actuator 541 and the controller 542 allows for improving the stability of the surface marking robot 500.
  • the actuator 541 may move the electronic component in the direction indicated by arrow Y so as to increase the maximum allowable speed beyond which the surface marking robot may overturn or rollover.
  • a maximum allowable speed in the non-operative mode of the surface marking robot 500 may be a speed greater than 0.6 m/s (such as 0.8 m/s, 1 .2 m/s, 1.5 m/s, 2 m/s, or 5 m/s).
  • the surface marking robot 500 may be used in the emergency stop methods previously explained in reference to FIG. 4.
  • the second location of the electronic component may be at a different height compared to the first location.
  • the maximum allowable speed obtained by a second location at a different height than the first location may be greater than when having the first and second locations at the same height (in other words, the movement from the first location to the second location does not include a vertical component).
  • FIGs. 1 to 3 and 5 have been represented along a direction parallel to the longitudinal axis of the robot.
  • the examples of FIGs. 1 to 3 and 5 have been explained in reference to surface marking robots 100, 200, 300, and 500 having a set of front wheels with a lower diameter than a set of rear wheels, it should be noted that alternative configurations may be possible.
  • the surface marking robot may comprise additional wheels and the location of some of the features explained in reference to the robots may be different. Nonetheless, alternative configurations should be defined such that a movement of the electronic component provides the robot with enhanced stability in the non-operative mode compared to the operative mode. In other words, the maximum allowable speed is higher in the non-operative mode than in the operative mode.

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Abstract

Selon un exemple, un robot de marquage de surface comprend un ensemble roues avant, un ensemble roues arrière, un composant électronique et un système de répartition du poids. Le système de répartition du poids comprend un actionneur servant à déplacer le composant électronique le long d'un axe longitudinal du robot, et un dispositif de commande fonctionnellement relié à l'actionneur. Le dispositif de commande est conçu pour amener l'actionneur à déplacer le composant électronique d'une première position à une seconde position par rapport à l'ensemble roues avant en réponse à un signal d'arrêt d'urgence.
PCT/US2023/068207 2023-06-09 2023-06-09 Composants électroniques mobiles Ceased WO2024253694A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP23738401.1A EP4724278A1 (fr) 2023-06-09 2023-06-09 Composants électroniques mobiles
PCT/US2023/068207 WO2024253694A1 (fr) 2023-06-09 2023-06-09 Composants électroniques mobiles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2023/068207 WO2024253694A1 (fr) 2023-06-09 2023-06-09 Composants électroniques mobiles

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WO2024253694A1 true WO2024253694A1 (fr) 2024-12-12

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PCT/US2023/068207 Ceased WO2024253694A1 (fr) 2023-06-09 2023-06-09 Composants électroniques mobiles

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WO (1) WO2024253694A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018093567A (ja) * 2016-11-30 2018-06-14 富士ゼロックス株式会社 サービス提供装置
US20190384325A1 (en) * 2019-07-15 2019-12-19 Lg Electronics Inc. Method for maintaining stability of mobile robot and mobile robot thereof
US20200124159A1 (en) * 2018-10-22 2020-04-23 Piaggio Fast Forward, Inc. Shifting assembly and mobile carrier comprising same

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018093567A (ja) * 2016-11-30 2018-06-14 富士ゼロックス株式会社 サービス提供装置
US20200124159A1 (en) * 2018-10-22 2020-04-23 Piaggio Fast Forward, Inc. Shifting assembly and mobile carrier comprising same
US20190384325A1 (en) * 2019-07-15 2019-12-19 Lg Electronics Inc. Method for maintaining stability of mobile robot and mobile robot thereof

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