Step number measuring apparatus

• US 20070202997A1
• Filed: 02/06/2007
• Published: 08/30/2007
• Est. Priority Date: 02/16/2006
• Status: Active Grant

• Current Assignee: Seiko Instruments Incorporated (Seiko Group)
• Original Assignee: Seiko Instruments Incorporated (Seiko Group)
• Inventors: Tsubata, Keisuke
• Granted Patent: US 7,805,277 B2
• Time in Patent Office: Days
• US Class Current: 482/54
• CPC Class Codes: G01C 22/006 Pedometers
• CPC Class Codes: Y10S 482/901 having computer circuitry
• CPC Class Codes: Y10S 482/902 Employing specific graphic or video display

Abstract

To provide a step number measuring apparatus in which a reduction in electric power is intended by a simple constitution, and which can correspond to plural movements. A CPU calculates a moving motion pitch on the basis of a detection signal from sensors that a switching circuit has selected, calculates the moving motion pitch by performing a processing having been selected from among plural kinds of processings, which have been stored in a memory, on the basis of the detection signal from the sensors that the switching circuit has selected, calculates the moving motion pitch by selecting the other processing among the plural kinds of processings when both the moving motion pitches differ, and performs a step number measurement by the selected processing when both the moving motion pitches become the same.

Claims

1. A step number measuring apparatus comprising:

plural sensors which detect a moving motion to thereby output a corresponding detection signal and whose sensitivity axes mutually differ;

a sensor selecting means selecting any of the sensors;

a 1st calculation means calculating a moving motion pitch on the basis of the detection signal from the sensor that the sensor selecting means has selected;

a 2nd calculation means calculating a moving motion pitch by performing a processing that a control means has selected from among plural kinds of processings on the basis of the detection signal from the sensor that the sensor selecting means has selected;

the control means which selects any processing from among the plural kinds of processings, and selects the other processing among the plural kinds of processings when the moving motion pitches that the 1st calculation means and the 2nd calculation means have calculated differ; and

a step number measuring means performing a step number measurement by the processing that the control means has selected.

2. A step number measuring apparatus according to claim 1;

a predetermined detection signal is not outputted from the sensor that the sensor selecting means has selected, the control means controls the sensor selecting means so as to select the other sensor.

3. A step number measuring apparatus according to claim 1 further comprising:

an amplifying means for amplifying and outputting the detection signal from the sensor that the sensor selecting means has selected;

wherein the control means alters a gain of the amplifying means to a gain complying with the selected processing, and

the 1st calculation means and the 2nd calculation means calculate the moving motion pitches on the basis of the detection signal outputted from the amplifying means and the step number measuring means performs the step number measurement.

4. A step number measuring apparatus claim 1;

wherein a sensor for walking, which has a sensitivity axis suitable for a walking detection, and a sensor for running, which has a sensitivity axis suitable for a running detection, are included in the plural sensors, and a processing for walking and a processing for running are included in the plural processings,

the control means selects the sensor for walking and the processing for walking when performing the step number measurement at a walking time, selects the sensor for running and the processing for walking when performing the step number measurement at an excise walking time, and selects the sensor for running and the processing for running when performing the step number measurement at a running time, and

the step number measuring means performs the step number measurement by using the sensor and the processing, that the control means has selected.

5. A step number measuring apparatus according to claim 1;

wherein the control means has judged that, under a state in which the processing is set to the processing for running, the moving motion pitch that the 2nd calculation means has calculated is not a pitch corresponding to the running, it switches the processing to the processing for walking.

6. A step number measuring apparatus according to claim 1 wherein the control means has judged that, under a state in which the processing is set to the processing for walking, the moving motion pitches that the 1st calculation means and the 2nd calculation have calculated mutually differ, it switches the processing to the processing for running.