公开(公告)号：US20190310104A1

公开(公告)日：2019-10-10

申请号：US16451380

申请日：2019-06-25

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Jayawardan JANARDHANAN ,  Sandeep RAO ,  Goutam DUTTA

IPC: G01C22/00 ,  G01C21/20 ,  G01C21/16 ,  G01P15/00 ,  G01C21/18 ,  G06F1/16

Abstract: A system (10) for pedestrian use includes an accelerometer (110) having multiple electronic sensors; an electronic circuit (100) operable to generate a signal stream representing magnitude of overall acceleration sensed by the accelerometer (110), and to electronically correlate a sliding window (520) of the signal stream with itself to produce peaks at least some of which represent walking steps, and further operable to electronically execute a periodicity check (540) to compare different step periods for similarity, and if sufficiently similar then to update (560) a portion of the circuit substantially representing a walking-step count; and an electronic display (190) responsive to the electronic circuit (100) to display information at least in part based on the step count. Other systems, electronic circuits and processes are disclosed.

公开(公告)号：US20240035851A1

公开(公告)日：2024-02-01

申请号：US18480003

申请日：2023-10-03

Applicant: Texas Instruments Incorporated

Inventor： Jayawardan JANARDHANAN ,  Sandeep RAO ,  Goutam DUTTA

IPC: G01C22/00 ,  G01C21/18 ,  G06F1/16 ,  G01C21/20 ,  G01P15/00 ,  G01C21/16

CPC classification number: G01C22/006 ,  G01C21/18 ,  G06F1/163 ,  G01C21/206 ,  G01P15/00 ,  G01C21/165 ,  G01C21/185 ,  G01C21/188 ,  G01F15/00

Abstract: A system for pedestrian use includes an accelerometer having multiple electronic sensors; an electronic circuit operable to generate a signal stream representing magnitude of overall acceleration sensed by the accelerometer, and to electronically correlate a sliding window of the signal stream with itself to produce peaks at least some of which represent walking steps, and further operable to electronically execute a periodicity check to compare different step periods for similarity, and if sufficiently similar then to update a portion of the circuit substantially representing a walking-step count; and an electronic display responsive to the electronic circuit to display information at least in part based on the step count. Other systems, electronic circuits and processes are disclosed.

公开(公告)号：US20220178720A1

公开(公告)日：2022-06-09

申请号：US17674993

申请日：2022-02-18

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Jayawardan JANARDHANAN ,  Sandeep RAO ,  Goutam DUTTA

IPC: G01C22/00 ,  G01C21/18 ,  G06F1/16 ,  G01C21/16 ,  G01C21/20 ,  G01P15/00

Abstract: A system (10) for pedestrian use includes an accelerometer (110) having multiple electronic sensors; an electronic circuit (100) operable to generate a signal stream representing magnitude of overall acceleration sensed by the accelerometer (110), and to electronically correlate a sliding window (520) of the signal stream with itself to produce peaks at least some of which represent walking steps, and further operable to electronically execute a periodicity check (540) to compare different step periods for similarity, and if sufficiently similar then to update (560) a portion of the circuit substantially representing a walking-step count; and an electronic display (190) responsive to the electronic circuit (100) to display information at least in part based on the step count. Other systems, electronic circuits and processes are disclosed.