US 12,116,945 B2
RPM module for outdoor powered equipment
Matthew Albinger, Shelby, NC (US); and Scott Kirkpatrick, Hickory, NC (US)
Assigned to HUSQVARNA AB, Huskvarna (SE)
Appl. No. 17/600,292
Filed by HUSQVARNA AB, Huskvarna (SE)
PCT Filed Oct. 30, 2019, PCT No. PCT/IB2019/059301
§ 371(c)(1), (2) Date Sep. 30, 2021,
PCT Pub. No. WO2021/048605, PCT Pub. Date Mar. 18, 2021.
Claims priority of provisional application 62/897,478, filed on Sep. 9, 2019.
Prior Publication US 2022/0205402 A1, Jun. 30, 2022
Int. Cl. F02D 41/00 (2006.01); F02D 41/04 (2006.01); F02D 41/22 (2006.01); G05B 23/02 (2006.01); G07C 5/08 (2006.01)
CPC F02D 41/0097 (2013.01) [F02D 41/042 (2013.01); F02D 41/22 (2013.01); G05B 23/0283 (2013.01); G07C 5/0808 (2013.01); F02D 2200/101 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A revolutions per minute (RPM) module for insertion into outdoor power equipment driven by an engine, the RPM module comprising:
an extraction interface configured to be inserted proximate to the engine to passively extract information indicative of RPM from the engine;
an RPM monitor operably coupled to the extraction interface to convert the information indicative of RPM into RPM data; and
processing circuitry configured to utilize the RPM data to perform control or monitoring of the engine based on the RPM data,
wherein the processing circuitry is exclusive to the RPM module,
wherein the processing circuitry is operably coupled to a serial data bus of the outdoor power equipment and determines if unclassified serial data bus data is indicative of RPM data, and
wherein, responsive to determining unknown serial bus data is indicative of RPM data, the processing circuitry is configured to lock onto and extract the RPM data from the serial data bus data.