Yokogawa Electric Corporation

Hiroki Yoshino

Naoyuki Fujimoto

Kazutoshi Kodama

Masato Yamaji

Hirotsugu Gotou

Masaaki Nikkuni

Yuko Ito

Masahiko Moriya

Etsutaro Koyama

Madoka Ueno

Toshimitsu Uemura

Yasuaki Horio

Kuniaki Sugitani

Mai Hagimoto

A sound analysis apparatus includes a sound acquirer configured to acquire a sound signal, a measurer configured to output time-series data of numerical values representing volumes based on the sound signal, and a calculator configured to perform calculation for analyzing the time-series data output from the measurer, wherein the calculator performs the calculation in a case of a first state in which a measured value that is the numerical value output from the measurer is included within an analysis target range that is a range in which the measured value is determined to be an analysis target, and wherein the calculator does not perform the calculation in a case of a second state in which the measured value is not included within the analysis target range.

Sound analysis apparatus, sound analysis method, and non-transitory computer readable storage medium

A measurement system according to one aspect of the present invention includes a plurality of measurement devices configured to perform measurements at a plurality of sites in a measurement target, respectively, and a measurement management apparatus configured to acquire measured data measured by each of the measurement devices via a communication network. Times timed by the measurement devices are correlated with each other. Each of the measurement devices is configured to transmit the measured data measured based on the correlated time to measurement management apparatus. The measurement management apparatus includes a measured data acquirer configured to acquire the measured data from each of the measurement devices.

Measurement system, measurement management apparatus, measurement device, and measurement method

A wireless field device that performs a wireless communication with other field devices in a wireless network through a gateway. The device includes: a battery incorporated in the field device to activate the field device; and a wireless communication module configured to exchange radio signals with the gateway to perform the wireless communication with said other field devices. When the field device starts procedure for joining in the wireless network, firstly, the wireless communication module continuously accesses the gateway in a first period to receive an advertisement signal from the gateway, and when the wireless communication module fails to receive the advertisement signal in the first period, the wireless communication module intermittently accesses the gateway until receiving the advertisement signal from the gateway.

Wireless field device and power management

A wireless communication system for communicating via a wireless communication network, may include: a setting device configured to create a first information needed for joining a wireless device into the wireless communication network and set the first information in the wireless device to be joined into the wireless communication network, the setting device being configured to create setting information that correlates the first information with a second information containing at least one of information indicating a method of setting the first information and information indicating an operator who performed an operation of setting the first information; and a management device configured to select the wireless device, which is to be joined into the wireless communication network, by using the setting information that has been created by the setting device.

Wireless communication system

The present invention is intended to realize a transmitter whose internal signal processing function can be duplicated without having to add any hardware components. The transmitter converts an input signal into an output signal using a plurality of calculation steps, comprising a backward calculation means for executing the plurality of calculation steps in reverse direction.

Transmitter and a method for duplicating same

A transmitter and a method for testing the transmitter which allow easy testing for a failure in the detection processing unit thereof, thereby reducing required manpower and cost, are provided. The transmitter is provided with a detection processing unit for detecting a process variable and processing an electric signal which is based on the process variable. The transmitter is characterized by containing a test unit for generating a malfunctioning state of the detection processing unit for the testing.

Transmitter and transmitter testing method

A time difference signal having a pulse width corresponding to the time difference between an output of a resonant pressure sensor and a reference clock is prepared. The pulse width of the time difference signal is expanded by a given magnification. Based on a count value obtained by counting the reference clock during the expanded pulse width and a count value obtained by counting the reference clock during one cycle of the output of the resonant pressure sensor or a period which is integer times as long as the one cycle, the output frequency of the resonant pressure sensor is obtained. It is possible to obtain the fast processing and the high resolution without increasing the frequency of the reference clock.

Growing community of inventors

Tokyo, Japan

Hiroki Yoshino