Method for managing health condition of grown-up cattle, system for managing health condition of grown-up cattle, apparatus for managing health condition of grown-up cattle, and garment for managing health condition of grown-up cattle

A system for managing a health condition of grown-up cattle, comprising:

• a measurement unit that measures beat intervals and accelerations in a predetermined period;
• a calculation unit that calculates at least one (hereinafter referred to as beat values) of average values of the beat intervals, variations in the beat intervals, beat numbers, HFs, or LF/HFs based on the beat intervals;
• a processing unit that obtains a regression formula of the beat values and the accelerations, and obtains a beat value when an acceleration is 0 (hereinafter referred to as a time A0) using the regression formula;
• and
• a determination unit that determines that the grown-up cattle is in a fasting state when a magnitude relationship of at least one of following formulae (1) to (5) is satisfied, and determines that the grown-up cattle is in a non-fasting state when none of magnitude relationships of following formulae (1) to (5) is satisfied:
• the average value of beat intervals at the time A0>A1 (1)
• the variation in beat intervals at the time A0>A2 (2)
• the beat number at the time A0<A3 (3)
• the HF at the time A0>A4 (4)
• the LH/HF at the time A0<A5 (5)
• in the formulae (1) to (5), A1 to A5 are constants,
• provided that, each LF is a value obtained by performing definite integration of a power spectrum from frequencies Lf1 to Lf2, the power spectrum being obtained by including a step of performing frequency spectrum conversion on beat intervals, and each HF is a value obtained by performing definite integration of the power spectrum from frequencies Hf1 to Hf2, where Hf1>Lf1 and Hf2>Lf2 are satisfied.

An apparatus for managing a health condition of grown-up cattle, comprising:

• a measurement unit that measures beat intervals and accelerations in a predetermined period;
• a calculation unit that calculates at least one (hereinafter referred to as beat values) of average values of the beat intervals, variations in the beat intervals, beat numbers, HFs, or LF/HFs based on the beat intervals;
• a processing unit that obtains a regression formula of the beat values and the accelerations, and obtains a beat value when an acceleration is 0 (hereinafter referred to as a time A0) using the regression formula;
• and
• a determination unit that determines that the grown-up cattle is in a fasting state when a magnitude relationship of at least one of following formulae (1) to (5) is satisfied, and determines that the grown-up cattle is in a non-fasting state when none of magnitude relationships of following formulae (1) to (5) is satisfied:
• the average value of beat intervals at the time A0>A1 (1)
• the variation in beat intervals at the time A0>A2 (2)
• the beat number at the time A0<A3 (3)
• the HF at the time A0>A4 (4)
• the LH/HF at the time A0<A5 (5)
• in the formulae (1) to (5), A1 to A5 are constants,
• provided that, each LF is a value obtained by performing definite integration of a power spectrum from frequencies Lf1 to Lf2, the power spectrum being obtained by including a step of performing frequency spectrum conversion on beat intervals, and each HF is a value obtained by performing definite integration of the power spectrum from frequencies Hf1 to Hf2, where Hf1>Lf1 and Hf2>Lf2 are satisfied.