Measurement device, time information provision device, measurement device control method, time information provision control method, measurement device control program, and time information provision control program

A measurement system comprising:

• a measurement device comprising:
• a sampling unit configured to sample a waveform of at least one of a voltage and a current at a measurement point of a power line at a predetermined sampling timing;
• a processing unit configured to execute processing of the waveform sampled by the sampling unit in a plurality of processing slots repeatedly with a predetermined period in synchronization with the waveform;
• a time information requesting unit configured to request a time information provision device, which is communicatively connected through a network, to provide time information;
• a time information acquisition unit configured to acquire the time information provided from the time information provision device in response to the request;
• and
• an adjustment unit configured to adjust a processing timing of the processing in the processing slots on the basis of the time information acquired by the time information acquisition unit and the waveform so that the time information provision device and the measurement device assume a synchronized state from an unsynchronized state;
• and
• a time information provision device comprising:
• a sampling unit configured to sample a waveform of at least one of a voltage and a current at a measurement point of a power line at the predetermined sampling timing;
• a processing unit configured to execute processing of the waveform sampled by the sampling unit in a plurality of processing slots repeatedly with a predetermined period in synchronization with the waveform;
• a request acquisition unit configured to acquire a request for provision of time information from the measurement device that is communicatively connected through a network;
• and
• a time information provision unit configured to provide the time information based on a processing timing of the processing for the measurement device in the processing slots in response to the request.

A measurement device control method causing a measurement device to execute:

• a sampling step of sampling a waveform of at least one of a voltage and a current at a measurement point of a power line at a predetermined sampling timing;
• a processing step of executing processing of the waveform sampled in the sampling step in a plurality of processing slots repeatedly with a predetermined period in synchronization with the waveform;
• a time information requesting step of requesting a time information provision device, which is communicatively connected through a network, to provide time information;
• a time information acquisition step of acquiring the time information provided from the time information provision device in response to the request;
• and
• an adjustment step of adjusting a processing timing of the processing in the processing slots on the basis of the time information acquired in the time information acquisition step and the waveform so that the time information provision device and the measurement device assume a synchronized state from an unsynchronized state.

A measurement control method causing:

• a measurement device to execute:
• a sampling step of sampling a waveform of at least one of a voltage and a current at a measurement point of a power line at a predetermined sampling timing;
• a processing step of processing of the waveform sampled by the sampling unit in a plurality of processing slots repeatedly with a predetermined period in synchronization with the waveform;
• a time information requesting step of requesting a time information provision device, which is communicatively connected through a network, to provide time information;
• a time information acquisition step of acquiring the time information provided from the time information provision device in response to the request;
• and
• an adjustment step of adjusting a processing timing of the processing in the processing slots on the basis of the time information acquired by the time information acquisition step and the waveform so that the time information provision device and the measurement device assume a synchronized state from an unsynchronized state;
• and
• a time information provision device to execute:
• a sampling step of sampling a waveform of at least one of a voltage and a current at a measurement point of a power line at the predetermined sampling timing;
• a processing step of executing processing of the waveform sampled in the sampling step in a plurality of processing slots repeatedly with a predetermined period in synchronization with the waveform;
• a request acquisition step of acquiring a request for provision of the time information from the measurement device that is communicatively connected through a network;
• and
• a time information provision step of providing the time information based on a processing timing of the processing for the measurement device in the processing slots in response to the request.

A non-transitory computer readable medium recording a measurement device control program causing a measurement device to execute:

• a sampling process of sampling a waveform of at least one of a voltage and a current at a measurement point of a power line at a predetermined sampling timing;
• a processing process of executing processing of the waveform sampled in the sampling process in a plurality of processing slots repeatedly with a predetermined period in synchronization with the waveform;
• a time information requesting process of requesting a time information provision device, which is communicatively connected through a network, to provide time information;
• a time information acquisition process of acquiring the time information provided from the time information provision device in response to the request;
• and
• an adjustment process of adjusting a processing timing of the processing in the processing slots on the basis of the time information acquired in the time information acquisition process and the waveform so that the time information provision device and the measurement device assume a synchronized state from an unsynchronized state.

A non-transitory computer readable medium recording a measurement control program causing:

• a measurement device to execute:
• a sampling process of sampling a waveform of at least one of a voltage and a current at a measurement point of a power line at a predetermined sampling timing;
• a processing process of processing of the waveform sampled by the sampling unit in a plurality of processing slots repeatedly with a predetermined period in synchronization with the waveform;
• a time information requesting process of requesting a time information provision device, which is communicatively connected through a network, to provide time information;
• a time information acquisition process of acquiring the time information provided from the time information provision device in response to the request;
• and
• an adjustment process of adjusting a processing timing of the processing in the processing slots on the basis of the time information acquired by the time information acquisition unit and the waveform so that the time information provision device and the measurement device assume a synchronized state from an unsynchronized state;
• and
• a time information provision device to execute:
• a sampling process of sampling a waveform of at least one of a voltage and a current at a measurement point of a power line at the predetermined sampling timing;
• a processing process of executing processing of the waveform sampled in the sampling process in a plurality of processing slots repeatedly with a predetermined period in synchronization with the waveform;
• a request acquisition process of acquiring a request for provision of the time information from the measurement device that is communicatively connected through a network;
• and
• a time information provision process of providing the time information based on a processing timing of the processing for the measurement device in the processing slots in response to the request.