Stroller frame, stroller and computer-readable storage medium

Patent metadata

Field	Value
Publication number	US-12296883-B2
Application number	US-202017597650-A
Country	US
Kind code	B2
Filing date	Jul 16, 2020
Priority date	Jul 16, 2019
Publication date	May 13, 2025
Grant date	May 13, 2025

Abstract

The invention relates to a stroller frame, comprising a sensor unit for capturing sensor data and a drive unit comprised of a computing unit, which is designed to switch the drive unit between a driving state and a non-driving state according to the time curve of the sensor data.

First claim

The invention claimed is:

1. A stroller frame, comprising:
a sensor unit for capturing sensor data at a sampling frequency; and
a drive unit; and
a computing unit coupled to the sensor unit and coupled to the drive unit,
wherein the computing unit is configured to switch the drive unit between a driving state and a non-driving state as a function of a comparison of the sensor data and a tolerance interval,
wherein the computing unit is configured to switch the drive unit to the non-driving state if fewer than a predetermined number of temporally contiguous measured values of a subset of the sensor data are not within the tolerance interval and configured to switch the drive unit to the driving state if a predetermined number of the temporally contiguous measured values of the subset are within the tolerance interval; or
wherein the computing unit is configured to switch the drive unit to the non-driving state if a statistical measure of a spread of the measured values of the sensor data is within the tolerance interval and configured to switch the drive unit to the driving state if the statistical measure of the spread of the measured values is outside the tolerance interval.

2. The stroller frame according to claim 1 , wherein the computing unit is configured to determine a reference value based on a temporally contiguous subset of the sensor data.

3. The stroller frame according to claim 2 , wherein the reference value corresponds to a mean value, a trimmed mean, a harmonic mean, or a weighted harmonic mean.

4. The stroller frame according to claim 1 , wherein the sensor data corresponds to a force or a torque.

5. The stroller frame according to claim 1 ,
wherein a temporally contiguous subset of the sensor data covers at least one interval,
wherein each interval includes at least two measured values,
wherein at least one of the at least two measured values corresponds to the driving state of the drive unit, and
wherein at least one of the at least two measured values corresponds to the non-driving state of the drive unit,
wherein the computing unit is configured to switch the drive unit to the non-driving state if fewer than a predetermined number of measured values of a subset of the sensor data are not within the tolerance interval and configured to switch the drive unit to the driving state if the predetermined number of measured values of the subset are within the tolerance interval.

6. The stroller frame according to claim 1 ,
wherein a temporally contiguous subset of the sensor data covers at least one interval,
wherein each interval includes at least two measured values,
wherein at least one of the at least two measured values corresponds to the driving state of the drive unit, and
wherein at least one of the at least two measured values corresponds to the non-driving state of the drive unit,
wherein the computing unit is configured to switch the drive unit to the non-driving state if a statistical measure of the spread of the measured values of the subset recorded in the non-driving state is within the tolerance interval and configured to switch the drive unit to a driving state if the statistical measure of the spread of the measured values of the subset recorded in the non-driving state is outside the tolerance interval.

7. The stroller frame according to claim 1 , comprising a pusher portion configured for pushing the stroller frame.

8. The stroller frame according to claim 7 , wherein the sensor unit is coupled to the pusher portion.

9. The stroller frame according to claim 1 , wherein the drive unit comprises one or both of a braking device and an electric motor.

10. The stroller frame according to claim 1 , comprising at least three wheels, wherein the drive unit is configured to drive or lock at least one of the at least three wheels.

11. The stroller frame according to claim 1 , comprising a framework having one or both of a pusher portion and at least three wheels.

12. The stroller frame according to claim 1 , further comprising a framework coupled to a pusher portion by a connecting element or by a connecting portion, wherein the sensor unit is coupled to the connecting element or the connecting portion.

13. The stroller frame according to claim 12 , wherein the framework includes at least one hinge portion, wherein the pusher portion is configured to rotate about the hinge portion.

14. The stroller frame according to claim 13 , wherein the sensor unit is arranged in the hinge portion.

15. The stroller frame according to claim 14 , wherein the framework is configured to have an unfolded configuration and a folded configuration.

16. The stroller frame according to claim 15 , wherein the sensor unit is communicatively or electrically connected to the drive unit or the sensor unit is communicatively or electrically connected to the computing unit in the unfolded configuration and wherein the sensor unit is decoupled from the drive unit or the computing unit in the folded configuration.

17. A stroller comprising a stroller frame according to claim 1 .

18. A non-transitory computer-readable storage medium, containing
instructions which cause at least one processor to implement the following when the instructions are executed: accessing sensor data; determining a reference value for the sensor data; accessing a measured value; and determining a control command for a drive unit of a stroller using the sensor data and the reference value, wherein the control command is configured to: switch the drive unit to a non-driving state if fewer than a predetermined number of temporally contiguous measured values of a subset of the sensor data are not within a tolerance interval and configured to switch the drive unit to a driving state if a predetermined number of the temporally contiguous measured values of the subset are within the tolerance interval; or wherein the control command is configured to: switch the drive unit to the non-driving state if a statistical measure of a spread of the measured values of the sensor data is within the tolerance interval and configured to switch the drive unit to the driving state if the statistical measure of the spread of the measured values is outside the tolerance interval.

19. A method for determining a control command, comprising: accessing sensor data; determining a reference value for the sensor data; accessing a measured value; determining a control command for a drive unit of a stroller using the sensor data and the reference value, wherein the control command is configured to: switch the drive unit to a non-driving state if fewer than a predetermined number of temporally contiguous measured values of a subset of the sensor data are not within a tolerance interval and configured to switch the drive unit to a driving state if a predetermined number of the temporally contiguous measured values of the subset are within the tolerance interval; or wherein the control command is configured to: switch the drive unit to the non-driving state if a statistical measure of a spread of the measured values of the sensor data is within the tolerance interval and configured to switch the drive unit to the driving state if the statistical measure of the spread of the measured values is outside the tolerance interval.

20. The method for determining a control command according to claim 19 , wherein the control command corresponds to an instruction for switching to a non-driving state or a braking state if fewer than a predetermined number of measured values of a subset of sen

Assignees

• Cybex Gmbh

Inventors

• Spour Jiri

Classifications

• G01L5/00

  Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes · CPC title

• B62B9/20

  Handle bars; Handles · CPC title

• B62B9/08

  Braking mechanisms; Locking devices against movement · CPC title

• B62B7/06

  collapsible or foldable · CPC title

• B62B5/0033

  Electric motors · CPC title