Pedometer, sampling device, and waveform analyzer

Abstract

A repair device for measurement, sampling device and waveform analysis device, which can analyze the waveform which is sampled from an output signal of a sensor, is provided to restrict the power consumption of the repair device for measurement. A repair device for measurement comprises an acceleration sensor(44) and a control member. The acceleration sensor outputs the acceleration value showing the acceleration. The control member controls two measurement states and operation states. The control member has the first control member and the second control member. The first control member reiterates acceleration value capturing, a fixed captured value, and the relation of threshold value for a fixed time. The second control member determines that the walk of the step using the acceleration value of the fixed number and the acceleration value from the acceleration sensor.

Description

【Technical field】 [0001] The present invention relates to a pedometer built in a mobile phone or the like, or a technique for sampling an output signal of a sensor and performing waveform analysis. 【Background technique】 [0002] Among the mobile phones, there are types that have a function as a step counting device for measuring the step count of the wearer of the mobile phone in addition to the original function of the mobile phone. In a mobile phone having a function as a step counting device, an acceleration sensor that detects the acceleration generated in the mobile phone according to the walking of the wearer is built in, or the walking of the wearer is detected by using the output signal of the acceleration sensor. circuit, etc. Therefore, a mobile phone having a function as a step counting device consumes more power than a mobile phone not having this function. JP-A-2010-15414 and JP-A-2009-300329 disclose techniques for suppressing power consumption of such mobil...

AI Technical Summary

Problems solved by technology

[0008] However, in the method of intermittently supplying power to the acceleration sensor until the output signal of the acceleration sensor exceeds the predetermined threshold value, when the acceleration exceeds the predetermined threshold value during the idle period of the intermittent power supply, in fact, from the time when the acceleration sensor exceeds the threshold value to the acceleration The delay in executing the waveform analysis of the sensor output signal becomes longer, and the waveform pattern or peak value immediately after the acceleration exceeds the threshold is actually missed, and errors may occur in the measurement result of the number of steps (refer to Figure 7 The graph shown by the dotted line in the

However, shortening the period during which the power supply to the acceleration sensor is stopped can shorten the above-mentioned delay. However, shortening the period during which the power supply to the acceleration sensor is stopped is not ideal from the viewpoint of keeping the power required to realize the pedometer function low.

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