Pedometer

Abstract

The invention provides a pedometer and a program. whenever an output signal of an acceleration transducer is detected to a reducing from an increasing(e.g. being a peak value), the peak value is compared with a first threshold value, and a time interval between the peak value and the detection timing of the previous peak value is compared with a second threshold value to judge whether to count the step number, and then, the detected peak value is compared with a third threshold value greater than the first threshold value, and a time interval between the peak value and the previous peak value is compared with a fourth threshold value representing a time shorter than the second threshold value to judge the action type of users(e.g. running, walking or other state). Under the situation of being judged as running or walking, the falling steep degree of a wave form after appearing a peak in an acceleration time waveform is estimated according to the judged result, and the step number is added up according to each action type.

Description

technical field [0001] The present invention relates to a pedometer for counting the number of steps of a user, and more particularly to a pedometer for detecting a step of a user by using a motion sensor such as an acceleration sensor. Background technique [0002] Conventionally, such pedometers have been known. And, as this kind of pedometer, there is a type that detects one step of the user based on whether a characteristic pattern appears on the output waveform of the acceleration sensor (Japanese Patent Laid-Open No. 2006-039971 and Japanese Patent Laid-Open No. 2006-127192 Publication No. 2007-115242, Japanese Patent Laid-Open No. 2007-115243, Japanese Patent Laid-Open No. 2007-115242 and Japanese Patent Laid-Open No. 2008-262522, JP 2006-118909, JP 2006-293860, and JP 2008-250964). [0003] However, for the user of the pedometer, the state of running (a state of movement in which both feet are suspended in the air) and the state of walking (a state of movement in w...

AI Technical Summary

Problems solved by technology

In this way, in the case of a pedometer that counts the number of steps by comparing the acceleration detected by the acceleration sensor with a predetermined threshold value, it is often difficult to count the number of steps accurately.

On the other hand, in the pedometer of the method of measuring the number of steps by pattern analysis of the output waveform of the acceleration sensor, although there is an advantage that the number of steps can be accurately counted compared with the pedometer of the former method, However, there are disadvantages that complicated processing is required and power consumption becomes high

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