Measurement apparatus and computer-readable recording medium

A measurement apparatus for measuring pulse waves comprising:

• a first pulse wave sensor and a second pulse wave sensor that can be arranged in correspondence with respective measurement sites distant from each other;
• and
• a hardware processor,
• the first pulse wave sensor including a power-supply that outputs a current signal having a first frequency to a corresponding measurement site and a first detector that detects a voltage signal representing pulse waves from the corresponding measurement site,
• the second pulse wave sensor including a power-supply that outputs a current signal having a second frequency to a corresponding measurement site and a second detector that detects a voltage signal representing pulse waves from the corresponding measurement site,
• wherein the hardware processor is configured to:
• alternately drive the first pulse wave sensor and the second pulse wave sensor at predetermined intervals,
• detect a pulse wave velocity from at least one of the pulse waves represented by the voltage signal detected by the first detector and the pulse waves represented by the voltage signal detected by the second detector, and
• calculate at least one of a first blood pressure based on the pulse wave velocity calculated based on the pulse waves represented by the voltage signal detected by the first detector and a second blood pressure based on the pulse wave velocity calculated based on the pulse waves represented by the voltage signal detected by the second detector.

A non-transitory computer-readable recording medium having a program stored thereon, the program having a computer perform a method of measuring by using an apparatus comprising a first pulse wave sensor and a second pulse wave sensor that can be arranged in correspondence with respective measurement sites distant from each other,

• the method including:
• controlling the first pulse wave sensor to output a current signal having a first frequency to a corresponding measurement site,
• controlling the first pulse wave sensor to detect a voltage signal representing pulse waves from the corresponding measurement site based on a filter characteristic corresponding to the first frequency,
• controlling the second pulse wave sensor to output a current signal having a second frequency different from the first frequency to a corresponding measurement site,
• controlling the second pulse wave sensor to detect a voltage signal representing pulse waves from the corresponding measurement site based on a filter characteristic corresponding to the second frequency,
• detecting a pulse wave velocity from at least one of the pulse waves represented by the voltage signal detected by the first pulse wave sensor and the pulse waves represented by the voltage signal detected by the second pulse wave sensor, and
• calculating at least one of a first blood pressure based on the pulse wave velocity calculated based on the pulse waves represented by the voltage signal detected by the first pulse wave sensor and a second blood pressure based on the pulse wave velocity calculated based on the pulse waves represented by the voltage signal detected by the second pulse wave sensor.

A non-transitory computer-readable recording medium having a program stored thereon, the program having a computer perform a method of measuring by using an apparatus comprising a first pulse wave sensor and a second pulse wave sensor that can be arranged in correspondence with respective measurement sites distant from each other,

• the method including:
• controlling the first pulse wave sensor to output a current signal having a first frequency to a corresponding measurement site,
• controlling the first pulse wave sensor to detect a voltage signal representing pulse waves from the corresponding measurement site,
• controlling the second pulse wave sensor to output a current signal having a second frequency to a corresponding measurement site,
• controlling the second pulse wave sensor to detect a voltage signal representing pulse waves from the corresponding measurement site,
• alternately driving the first pulse wave sensor and the second pulse wave sensor at predetermined intervals,
• detecting a pulse wave velocity from at least one of the pulse waves represented by the voltage signal detected by the first pulse wave sensor and the pulse waves represented by the voltage signal detected by the second pulse wave sensor, and
• calculating at least one of a first blood pressure based on the pulse wave velocity calculated based on the pulse waves represented by the voltage signal detected by the first pulse wave sensor and a second blood pressure based on the pulse wave velocity calculated based on the pulse waves represented by the voltage signal detected by the second pulse wave sensor.