SENSOR, COMPUTING DEVICE, AND MOTION ANALYZING APPARATUS

• US 20150285834A1
• Filed: 03/26/2015
• Published: 10/08/2015
• Est. Priority Date: 04/08/2014
• Status: Abandoned Application

• Current Assignee: Seiko Epson Corporation (Seiko Group)
• Original Assignee: Seiko Epson Corporation (Seiko Group)
• Inventors: SHIBUYA, Kazuhiro, NISHIJIMA, Kyoko
• Application Number:
  US14/669,746
• Publication Number:
  US 20150285834A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: A61B 5/1116 Determining posture transitions
• CPC Class Codes: A61B 5/6895 Sport equipment
• CPC Class Codes: A63B 2220/803 Motion sensors
• CPC Class Codes: A63B 24/0003 Analysing the course of a movement or motion sequences during an exercise or trainings sequence, e.g. swing for golf or tennis
• CPC Class Codes: A63B 69/36 for golf
• CPC Class Codes: G01P 15/0802 Details
• CPC Class Codes: G09B 19/0038 Sports

Abstract

A sensor unit includes a measuring section and a sampling-rate switching section configured to switch a sampling rate at which the measuring section performs measurement. The measuring section performs the measurement at a first sampling rate in a standstill period of a user and, in a motion period of the user, switches, with the sampling-rate switching section, the sampling rate to a second sampling rate and performs the measurement. The first sampling rate is lower than the second sampling rate.

Claims

1. A sensor comprising:

a measuring section; and

a sampling-rate switching section configured to switch a sampling rate at which the measuring section performs measurement, wherein

the measuring section performs the measurement at a first sampling rate in a standstill period of a measurement object and, in a motion period of the measurement object, switches the sampling rate to a second sampling rate with the sampling-rate switching section, and performs the measurement, and

the first sampling rate is lower than the second sampling rate.

2. The sensor according to claim 1, wherein the sampling-rate switching section switches the first sampling rate to the second sampling rate on the basis of a first switching signal from an outside.

3. A computing device comprising:

a standstill-period detecting section configured to detect, on the basis of first measurement data measured by a sensor at a first sampling rate, a standstill period in which a measurement object stands still; and

a sensor control section configured to transmit, when the standstill-period detecting section detects the standstill period, to the sensor, a first switching signal for instructing switching to a second sampling rate, wherein

the first sampling rate is lower than the second sampling rate.

4. The computing device according to claim 3, wherein the standstill-period detecting section detects the standstill period when the first measurement data is within a predetermined range in a predetermined time.

5. The computing device according to claim 3, further comprising a zero-point-bias calculating section configured to calculate a zero-point bias value of the first measurement data of the sensor when the standstill-period detecting section detects the standstill period.

6. The computing device according to claim 5, wherein the zero-point-bias calculating section calculates an average of the first measurement data in the standstill period and sets the average as the zero-point bias value.

7. The computing device according to claim 3, further comprising a motion analyzing section configured to analyze a motion of the measurement object using second measurement data measured by the sensor at the second sampling rate.

8. The computing device according to claim 3, further comprising a motion-end detecting section configured to detect an end of a motion of the measurement object, wherein

when the motion-end detecting section detects the end of the motion of the measurement object, the sensor control section transmits, to the sensor, a second switching signal for instructing switching to the first sampling rate.

9. The computing device according to claim 3, wherein the first sampling rate is equal to or lower than an output rate at which the sensor outputs the first measurement data.

10. A motion analyzing apparatus comprising:

a measuring section configured to measure a motion as first data at a first sampling rate;

a data processing section configured to process the first data into a second sampling rate lower than the first sampling rate to obtain second data;

a detecting section configured to detect an event of the motion from the second data;

a range designating section configured to designate a time range in the motion on the basis of the detected event and receive the first data in the time range as third data; and

an analyzing section configured to analyze the motion using the second data and the third data.

11. The motion analyzing apparatus according to claim 10, wherein the detecting section detects a standstill state of the motion as the event.

12. The motion analyzing apparatus according to claim 10, wherein the data processing section performs processing for calculating an average of the first data within a sampling interval of the second sampling rate.

13. The motion analyzing apparatus according to claim 10, wherein the time range is set to a range before and after a point in time of a maximum of an inertial amount in the motion.

14. The motion analyzing apparatus according to claim 10, wherein a plurality of the time ranges are set.

15. The motion analyzing apparatus according to claim 10, wherein

the measuring section and the data processing section are provided in a first calculating section, and

the detecting section, the range designating section, and the analyzing section are provided in a second calculating section.

16. The motion analyzing apparatus according to claim 10, wherein the motion is swing performed using an exercise instrument.