System and method for proximity-based control of outdoor power machines

• US 10,759,418 B2
• Filed: 12/02/2015
• Issued: 09/01/2020
• Est. Priority Date: 12/29/2014
• Status: Active Grant

• Current Assignee: Husqvarna AB (HUSQVARNA)
• Original Assignee: Husqvarna AB (HUSQVARNA)
• Inventors: Funk, Jonathan, Karlsson, Jr., Mattias
• Primary Examiner(s): Holmes, Justin
• Application Number:
  US15/540,383
• Publication Number:
  US 20180265080A1
• Time in Patent Office: 1,735 Days
• Field of Search: None
• CPC Class Codes: B60T 2201/022 Collision avoidance systems
• CPC Class Codes: B60T 7/22 initiated by contact of vehicle, e.g. bumper, with an external object, e.g. another vehicle , or by means of contactless obstacle detectors mounted on the vehicle
• CPC Class Codes: B60W 10/06 including control of combustion engines
• CPC Class Codes: B60W 10/10 including control of change-speed gearings
• CPC Class Codes: B60W 2300/156 Ridable lawn mowers
• CPC Class Codes: B60W 2554/00 Input parameters relating to objects
• CPC Class Codes: B60W 2710/06 Combustion engines, Gas turbines
• CPC Class Codes: B60W 2710/10 Change speed gearings
• CPC Class Codes: B60W 30/08 Active safety systems predicting or avoiding probable or impending collision or attempting to minimise its consequences
• CPC Class Codes: B60W 50/14 Means for informing the driver, warning the driver or prompting a driver intervention
• CPC Class Codes: F02P 9/002 Control of spark intensity, intensifying, lengthening, suppression by means of current control in the storage devices F02P3/05, F02P3/09, during starting F02P15/12

Abstract

An outdoor power machine proximity-based control system includes: a controller operably connected to an outdoor power machine, the controller being configured to control a pre-determined function of the outdoor power machine in response to a triggering event, the controller including a communications device configured to receive a signal indicative of a location of an object relative to the outdoor power machine, wherein in response to the received signal, the controller compares the location of the object to a pre-determined threshold and in response to the comparison causes an action to prevent interaction between the outdoor power machine and the object.

Claims

1. An outdoor power machine proximity-based control system, comprising an object detection system operably connected to an outdoor power machine, the object detection system being configured to transmit a signal into a work area of the outdoor power machine and receive reflected signals from objects located within the work area and a controller configured to control a pre-determined function of the outdoor power machine in response to a triggering event, the controller including:

a housing having a receptacle at a first end of the housing for receiving a spark plug of the outdoor power machine therein and a spark plug terminal at a second end of the housing for being received by a spark plug terminal of an electrical system of the outdoor power machine;

electronics including a switching circuit operably connected to a communications device, the switching circuit being configured to interrupt an electrical path between the electrical system of the outdoor power machine and the spark plug, the communications device is configured to receive a signal indicative of a location of an object relative to the outdoor power machine, wherein the controller is configured to cause the switching circuit to interrupt the electrical path between the electrical system and the spark plug in response to the received signal; and

a ground strap operably connected between the electronics and a ground of the outdoor power machine to ground the switching circuit and allow the switching circuit to interrupt the electrical path.

2. The system according to claim 1, wherein the controller includes a processor to process the received signal and compare it to a pre-determined threshold.

3. The system according to claim 1, further including a transmitter operably connected to the object, the transmitter transmitting a signal to the communications device to inform the controller that an object is present in a work area of the outdoor power machine.

4. The system according to claim 3, wherein a strength of the signal being transmitted by the transmitter provides the controller with an indication of a distance between the controller and the object.

5. The system according to claim 1, further including a visual display to provide a user with a visual indication of a location of the object within the work area of the outdoor power machine.

6. The system according to claim 1, further including a visual display configured to provide a user of the outdoor power machine a geographical location of the object relative to the outdoor power machine.

7. The system according to claim 1, further including a visual display configured to provide a user with visual warnings.

8. The system according to claim 7, wherein the visual warnings include colors to indicate a safe distance to the object, a caution distance to the object, and a not safe distance to the object.

9. An outdoor power machine proximity-based control system, comprising:

(a) an outdoor power machine having an engine including a spark plug;

(b) a controller connected to the outdoor power machine, the controller-including;

(i) a housing having a receptacle connected to the spark plug of the outdoor power machine therein and a spark plug terminal connected to a spark plug terminal of an electrical system of the outdoor power machine; and

(ii) electronics including a switching circuit operably connected to a communications device, the switching circuit being configured to interrupt an electrical path between the electrical system of the outdoor power machine and the spark plug; and

(iii) a ground strap operably connected between the electronics and a ground of the outdoor power machine to ground the switching circuit and allow the switching circuit to interrupt the electrical path;

(c) at least one object transmitter operably connected to an object in a work area of the outdoor power machine, wherein the object transmitter is configured to transmit a signal that is received by the communications device, and wherein the communications device is configured to receive the signal and determine a strength thereof, wherein the controller is configured to cause the switching circuit to interrupt the electrical path between the electrical system and the spark plug when a strength of the signal meets a pre-determined threshold, thereby shutting down the engine of the outdoor power machine; and

(d) a visual display configured to provide a user with visual warnings, the visual warnings including colors to indicate a safe distance to the object, a caution distance to the object, and a not safe distance to the object.

10. The system according to claim 9, further including a receiver operably connected to the communications device.

11. The system according to claim 9, wherein the controller includes a processor to process the received signal and compare it to a pre-determined threshold, and wherein instructions from the processor include displaying the location of the object on the visual display.

12. A method of using the outdoor power machine proximity-based control system of claim 9, comprising the steps of:

(a) detecting an object located in a work area of an outdoor power machine;

(b) in response to detection of an object, determining a location of the object relative to the outdoor power machine;

(c) comparing a distance from the location of the object to a location of the outdoor power machine to a pre-determined threshold; and

(d) interrupting an electrical path to the engine of the outdoor power machine when the distance is less than the pre-determined threshold, thereby shutting down the engine and making the outdoor power machine inoperable.

13. The method according to claim 12, further including the step of disengaging a transmission of the outdoor power machine to prevent the outdoor power machine from moving.

14. The method according to claim 12, further including the step of providing a user with a visual indication of the location of an object located within the work area to allow the user to take corrective actions and prevent interaction between the outdoor power machine and the object.

15. The method according to claim 12, wherein the step of detecting an object further includes the step of using a transmitter to transmit a signal to provide data indicative of the location of the object.

16. The method according to claim 15, further including the step of using a communications device to receive data from the transmitted signal.

17. The method according to claim 16, further including the step of using a processor to process the received data and perform the steps of determining a location, comparing a distance, and causing an action.

18. The method according to claim 12, wherein the pre-determined threshold is a distance anywhere within detectable range.

19. The system according to claim 9, further including a machine transmitter operably connected to the outdoor power machine, wherein the machine transmitter transmits a signal into the work area of the outdoor power machine and receives a reflected signal when the transmitted signal is reflected by an object in the work area, and wherein a processor of the controller processes the reflected signal to determine a location of the object relative to the location of the outdoor power machine.