Nec Corporation

Jfe Chemical Corporation

Yoshinori Kitahara

Yoshiaki Aono

Tadayuki Iwano

Satoru Ishii

Yuusuke Sakurai

An optical fiber sensing system according to the present disclosure includes: an optical fiber network () configured to detect first sensing information related to a first monitoring target and second sensing information related to a second monitoring target; a reception unit () configured to receive an optical signal from the optical fiber network (); a specification unit () configured to specify a first monitoring target based on first sensing information superimposed on the optical signal and specify a second monitoring target based on second sensing information superimposed on the optical signal, and a provision unit () configured to provide information related to the first monitoring target and information related to the second monitoring target specified by the specification unit () for a service providing destination.

Optical fiber sensing system, optical fiber sensing method, and optical fiber sensing apparatus

An optical fiber sensing system according to this disclosure includes: a first optical fiber network (A) configured to detect first sensing information about a monitoring target; a second optical fiber network (B) configured to detect second sensing information about the monitoring target; a first reception unit (A) configured to receive a first light signal from the first optical fiber network (A); a second reception unit (B) configured to receive a second light signal from the second optical fiber network (B); and an identification unit () configured to identify the monitoring target, based on the first sensing information included in the first light signal, and the second sensing information included in the second light signal.

A monitoring system according to the present disclosure includes: an optical fiber () configured to sense a peripheral environmental state, a monitor's terminal (), a receiving unit () configured to receive an optical signal containing information indicating the environmental state from the optical fiber (), a detecting unit () configured to detect at least one of an accident and an incident, based on the information indicating the environmental state, being included in the optical signal, and a broadcasting unit () configured to broadcast that the accident or the incident has occurred to the monitor's terminal () when the detecting unit () determines that the accident or the incident has occurred.

Monitoring system, monitoring device, and monitoring method

Provided are: a method for producing fluorenylidene diallylphenols represented by formula (1), the method including a reaction step for reacting fluorenones represented by formula (2) and allylphenols represented by formula (3) in the presence of an acid catalyst, excluding compounds having mercapto groups, the amount of acid catalyst being 0.001-20 mol per mol of compound represented by formula (2); and fluorenylidene diallylphenols represented by formula (4). 

Method for producing fluorenylidene diallylphenols, and fluorenylidene diallylphenols

There are provided a monitoring apparatus, a wireless communication system, a failure factor deciding method and a program which enable a user to take an appropriate countermeasure for a failure factor which has occurred in a wireless communication apparatus which employs space diversity. The monitoring apparatus () includes an obtaining unit () and a deciding unit (). The obtaining unit () obtains a history related to a received signal level of a first receiver () and a received signal level of a second receiver () in a predetermined period from a wireless communication apparatus () including the first receiver () and the second receiver (). The deciding unit () decides a factor of a failure that has occurred in the wireless communication apparatus () based on the history.

Monitoring apparatus, wireless communication system, failure factor deciding method, and non-transitory computer readable medium having program stored thereon

A monitoring apparatus, a wireless communication system, a failure-cause distinguishing method, and a non-transitory computer readable medium storing a program that enable a user to appropriately cope with fading are provided. A monitoring apparatus () includes an acquisition unit () and a distinguishing unit (). The acquisition unit () acquires history data which is generated in one or more wireless communication apparatuses and which indicates at least information related to the time at which failures have occurred in each predetermined time period and related to a received signal level therein. The distinguishing unit () distinguishes the type of fading that has occurred in the wireless lines related to the wireless communication apparatuses based on the history data.

Monitoring apparatus, wireless communication system, failure-cause distinguishing method, and non-transitory computer readable medium storing program

A monitoring device which enables a user to address a failure before said failure occurs, a radio communication system, a failure prediction method and a non-temporary computer-readable medium in which a program is stored are provided. This monitoring device is provided with an acquisition unit and a prediction unit. The acquisition unit acquires history data which is generated in one or more radio communication devices and which indicates at least the time at which a received signal level falls below a preset threshold level in each preset time period. The prediction unit predicts, based on the history data, the possibility of a failure occurring in the radio communication device.

Monitoring device, radio communication system, failure prediction method and non-temporary computer-readable medium in which a program is stored

A radio communication system includes a plurality of base station apparatuses. In the radio communication system, the communication areas of the plurality of base station apparatuses are connected in a loop to form a borderline separating the inside and the outside of a management area. The radio communication system detects a mobile terminal which enters the management area by crossing the borderline on the basis of communication between the base station apparatuses and a mobile terminal.

Growing community of inventors

Tokyo, Japan

Yoshinori Kitahara