Seiko Instruments Inc

Hideaki Nagatsuma

Kazumi Sakumoto

Hiroshi Odagiri

To provide a portable GPS velocity/distance meter which may seek a suitable movement velocity by removing an affect of arm swing, save power consumption of a device, and to grip a movement condition of a carrier at a remote position, it is composed of a GPS signal receiving portion for measuring the movement velocity from a Doppler frequency, a microcomputer, an input section for setting a control condition or the like and calculation of various data including positional interval data of the GPS signal receiving section, a display section for displaying the movement velocity or the like and a transmit-receive section. Then, the microcomputer is provided with a control unit for controlling the GPS signal receiving section to intermittently perform the positional operation on the basis of the positional measurement interval and a velocity averaging unit for averaging the movement velocity.

Portable GPS velosity/distance meter

A measurement section for measuring a time and a period of time and outputting the measured data; a storing section for storing the measured data to be outputted from the measurement means and statistical data that is a statistical value or values obtained by sequentially processing and calculating the measured data; and a control section for setting a determination regarding whether or not the measured data to be outputted from the measurement section is stored in the storing section, and controlling the data storing operation so that the measured data is allowed to be stored in the storing section only when it has been determined to store the measured data, and calculating new statistical data to update the statistical data by employing the measured data and the statistical data stored in the storing section each time when the measured data is outputted from the measurement section.

Portable measurement apparatus

A portable type distance/speed meter is designed for measuring a travel distance and a travel speed when a user walks, or runs, while realizing a correct average speed calculation in response to GPS electromagnetic waves receiving conditions. The portable type distance/speed meter is arranged by: a GPS (Global Positioning System) receiver for receiving GPS electromagnetic waves transmitted from GPS satellites to acquire positioning data from the received GPS electromagnetic waves; first distance calculating means for calculating a travel distance of a user as a first distance based upon a difference between positional information contained in the positioning data which are acquired at two positions; timer means for measuring travel time of the user over the first distance; first speed calculating means for calculating a travel speed of the user as a first speed based upon both the first distance calculated by the first distance calculating means and the travel time measured by the timer means; abnormal value detecting means for detecting an abnormal value of the first speed calculated by the first speed calculating means; average speed calculating means for calculating an average travel speed of, the user based upon the first speed calculated by the first speed calculating means in the case that the abnormal value of the first speed is not detected by the abnormal value detecting means; and distance accumulating means for accumulating the first distance calculated by the first distance calculating means so as to calculate an accumulated distance in the case that the abnormal value of the first speed is not detected by the abnormal value detecting means.

Portable GPS type distance/speed meter capable of selectively using doppler speed measuring method

A portable type distance/speed meter is designed for measuring a travel distance and a travel speed in response to GPS electromagnetic waves received by a GPS receiver. The portable type distance/speed meter is arranged by: a GPS (Global Positioning System) receiver for receiving GPS electromagnetic waves transmitted from GPS satellites to acquire positioning data from the received GPS electromagnetic waves in a predetermined sampling period; travel speed calculating means for calculating a travel speed of a user based upon the positioning data; timer means for measuring travel time of the user at the travel speed; travel distance calculating means for calculating a travel distance of the user based upon both the travel speed calculated by the travel speed calculating means and the travel time measured by the timer means; average travel speed calculating means for calculating an average travel speed of the user based upon the travel speed calculated by the travel speed calculating means; motion detecting means for detecting motion produced while the user walks, or runs to thereby output the motion detecting result as a motion signal; and sampling period changing means for entering the motion signal outputted from the motion detecting means, for changing the sampling period based upon the entered motion signal.

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Chiba, Japan

Hideaki Nagatsuma