JP2017051146A - Ruminant behavior analysis method and ruminant behavior analysis apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a ruminant behavior analysis method capable of discriminating at least one of feeding, rumination, and resting while lying from front-back direction acceleration, vertical direction acceleration, and right-left direction acceleration.SOLUTION: A ruminant behavior analysis method includes: a detection step S1 for attaching a three-axis acceleration sensor to a neck of a ruminant, and discriminating feeding, rumination, and resting while lying from the acceleration acquired by the three-axis acceleration sensor; an acceleration storage step S2; a unit activity amount calculation step S3; a unit activity amount storage step S4; an analysis data extraction step S5; and a discrimination step S6.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a ruminant behavior analysis method and behavior analysis apparatus for discriminating foraging, rumination, and prone rest.

  There has been proposed a ruminant health management system capable of grasping the health status of ruminants such as cows, the timing of estrus and parturition (Patent Document 1).

JP 2008-228573 A

In Patent Document 1, an acceleration sensor that measures the acceleration in the front-rear direction of the ruminant and a temperature sensor that measures the temperature of the lower jaw and body of the ruminant are attached to the neck of the ruminant, and measurement is performed using the acceleration sensor and the temperature sensor. Based on the acceleration data and temperature data, the ruminant health status, estrus, or delivery timing is known.
In Patent Document 1, a triaxial acceleration sensor is used, but the front-rear direction of the ruminant is measured using only one axis.

The present invention provides a ruminant behavior analysis method and behavior analysis device capable of discriminating at least one of foraging, rumination, and prone rest from longitudinal acceleration, vertical acceleration, and lateral acceleration. With the goal.
In addition, the present invention calculates the unit activity amount per unit time associated with the elapsed time by adding the absolute value of the longitudinal acceleration, the absolute value of the vertical acceleration, and the absolute value of the lateral acceleration. Provided are a ruminant behavior analysis method and a behavior analysis device capable of discriminating at least one of foraging, rumination, and prone rest based on the sum calculated from the amount or the difference in unit activity before and after the elapsed time. The purpose is to do.

According to the method for analyzing the behavior of a ruminant of the present invention, a triaxial acceleration sensor is attached to the neck of the ruminant, and foraging, rumination, and prone rest are discriminated from the acceleration obtained by the triaxial acceleration sensor. A ruminant behavior analysis method for detecting a longitudinal acceleration, a vertical acceleration, and a horizontal acceleration with the three-axis acceleration sensor, the detected longitudinal acceleration, the vertical acceleration, and the By adding the acceleration storage step for storing the lateral acceleration together with the elapsed time data, and adding the absolute value of the longitudinal acceleration, the absolute value of the vertical acceleration, and the absolute value of the lateral acceleration at the same time, A unit activity amount calculating step for calculating a unit activity amount per unit time according to the elapsed time; and the unit activity amount is recorded together with the elapsed time data. A unit activity amount storage step, an analysis data extraction step for extracting the longitudinal acceleration, the vertical acceleration, and the lateral acceleration together with the elapsed time data in a period in which the unit activity amount continues for a predetermined time; A determination step by acceleration that determines at least one of the foraging, rumination, and prone rest from the longitudinal acceleration, the vertical acceleration, and the lateral acceleration extracted in the analysis data extraction step. It is characterized by that.
According to a second aspect of the present invention, in the ruminant behavior analysis method according to the first aspect, in the discrimination step based on the acceleration, the longitudinal acceleration and the vertical acceleration are determined at the predetermined time at the elapsed time to be continued. When the acceleration in the left-right direction exceeds a threshold value, it is determined that the foraging is not the rumination and the prone rest.
According to a third aspect of the present invention, in the ruminant behavior analysis method according to the first or second aspect, in the step of determining by acceleration, a difference between the longitudinal acceleration and the vertical acceleration at the same time. If the difference between the longitudinal acceleration and the lateral acceleration, or the difference between the vertical acceleration and the lateral acceleration exceeds a predetermined value, the foraging is not the rumination and the prone rest It is characterized by distinguishing.
According to a fourth aspect of the present invention, in the ruminant behavior analysis method according to any one of the first to third aspects, in the determination step based on the acceleration, at the predetermined time at the elapsed time to be continued, When the direction acceleration greatly changes from a positive value to a negative value, or from a negative value to a positive value, it is determined that the neck has moved from bottom to top or from top to bottom. To do.
According to a fifth aspect of the present invention, in the ruminant behavior analysis method according to the first aspect, in the step of determining by acceleration, the longitudinal acceleration and the vertical acceleration are determined at the predetermined time at the elapsed time to be continued. And the lateral acceleration is a uniform value not exceeding a threshold value, and the longitudinal acceleration, the vertical acceleration, and the lateral acceleration at the same time are values of ± 0.5 m / sec ² or less. When it occurs 70 to 90 times in one minute, it is determined that it is the rumination, not the foraging and the prone rest.
The method for analyzing the behavior of a ruminant according to claim 6 of the present invention is such that a triaxial acceleration sensor is attached to the neck of the ruminant, and foraging, rumination, and prone rest are discriminated from the acceleration obtained by the triaxial acceleration sensor. A ruminant behavior analysis method for detecting a longitudinal acceleration, a vertical acceleration, and a horizontal acceleration with the three-axis acceleration sensor, the detected longitudinal acceleration, the vertical acceleration, and the By adding the acceleration storage step for storing the lateral acceleration together with the elapsed time data, and adding the absolute value of the longitudinal acceleration, the absolute value of the vertical acceleration, and the absolute value of the lateral acceleration at the same time, A unit activity amount calculating step for calculating a unit activity amount per unit time according to the elapsed time; and the unit activity amount is recorded together with the elapsed time data. A unit activity amount storage step, an analysis data extraction step for extracting the unit activity amount in a period in which the unit activity amount continues for a predetermined time together with the elapsed time data, and the analysis data extraction step to extract and continue An activity amount calculating step of calculating a total amount of the unit activity amounts at the predetermined time at an elapsed time as an activity amount, the activity amount calculated in the activity amount calculating step, the foraging, the rumination, and the proneness It is characterized by having a determination step based on an activity amount for determining that it is the foraging rather than the rumination and the prone rest by comparing with rest.
The method for analyzing the behavior of a ruminant according to claim 7 of the present invention is such that a three-axis acceleration sensor is attached to the neck of the ruminant, and foraging, rumination, and prone rest are discriminated from the acceleration obtained by the three-axis acceleration sensor. A ruminant behavior analysis method for detecting a longitudinal acceleration, a vertical acceleration, and a horizontal acceleration with the three-axis acceleration sensor, the detected longitudinal acceleration, the vertical acceleration, and the By adding the acceleration storage step for storing the lateral acceleration together with the elapsed time data, and adding the absolute value of the longitudinal acceleration, the absolute value of the vertical acceleration, and the absolute value of the lateral acceleration at the same time, A unit activity amount calculating step for calculating a unit activity amount per unit time according to the elapsed time; and the unit activity amount is recorded together with the elapsed time data. A unit activity amount storage step, an analysis data extraction step for extracting the unit activity amount in a period in which the unit activity amount continues for a predetermined time, together with the elapsed time data, and an analysis data extraction step, and the elapsed time A change amount calculation step for calculating a difference between the unit activity amounts before and after the change as a change amount, and the change amount calculated in the change amount calculation step between the foraging, the rumination, and the prone rest Thus, there is a discrimination step based on a change amount that discriminates that it is the foraging rather than the rumination and the prone rest.
The ruminant behavior analysis apparatus according to claim 8 of the present invention is obtained from a longitudinal acceleration per unit time, a vertical acceleration, and a lateral acceleration obtained by a three-axis acceleration sensor attached to the neck of the ruminant. A ruminant behavior analysis device for discriminating foraging, rumination, and prone rest, and an acceleration storage means for storing the detected longitudinal acceleration, the vertical acceleration, and the lateral acceleration together with elapsed time data The unit for calculating the unit activity amount per unit time with the elapsed time by adding the absolute value of the longitudinal acceleration, the absolute value of the vertical acceleration, and the absolute value of the lateral acceleration at the same time Activity amount calculation means, unit activity amount storage means for storing the unit activity amount together with the elapsed time data, and a period during which the unit activity amount continues for a predetermined time. Analysis data extraction means for extracting the longitudinal acceleration, the vertical acceleration, and the lateral acceleration together with the elapsed time data, and the longitudinal acceleration, the vertical acceleration extracted by the analysis data extraction means, And determining means by acceleration for determining at least one of the foraging, rumination, and prone rest from the lateral acceleration.
According to a ninth aspect of the present invention, in the ruminant behavior analysis device according to the eighth aspect, the acceleration-based discriminating means includes the longitudinal acceleration and the vertical acceleration during the predetermined time at the continuous time. When the acceleration in the left-right direction exceeds a threshold value, it is determined that the foraging is not the rumination and the prone rest.
According to a tenth aspect of the present invention, in the ruminant behavior analysis device according to the eighth or ninth aspect, the discrimination means based on the acceleration is a difference between the longitudinal acceleration and the vertical acceleration at the same time. If the difference between the longitudinal acceleration and the lateral acceleration, or the difference between the vertical acceleration and the lateral acceleration exceeds a predetermined value, the foraging is not the rumination and the prone rest It is characterized by distinguishing.
According to the eleventh aspect of the present invention, in the ruminant behavior analysis apparatus according to any one of the eighth to tenth aspects, the acceleration-based discriminating means is configured so that the predetermined time at the elapsed time continues at the predetermined time. When the direction acceleration greatly changes from a positive value to a negative value, or from a negative value to a positive value, it is determined that the neck has moved from bottom to top or from top to bottom. To do.
According to a twelfth aspect of the present invention, in the ruminant behavior analysis apparatus according to the eighth aspect, the acceleration-based discriminating means is configured such that the longitudinal acceleration and the vertical acceleration are detected at the predetermined time at the elapsed time. And the lateral acceleration is a uniform value not exceeding a threshold value, and the longitudinal acceleration, the vertical acceleration, and the lateral acceleration at the same time are values of ± 0.5 m / sec ² or less. When it occurs 70 to 90 times in one minute, it is determined that it is the rumination, not the foraging and the prone rest.
The ruminant behavior analysis apparatus according to claim 13 of the present invention has a three-axis acceleration sensor attached to the neck of the ruminant, and discriminates foraging, rumination, and prone rest from the acceleration obtained by the three-axis acceleration sensor. A ruminant behavior analysis apparatus that detects a longitudinal acceleration, a vertical acceleration, and a lateral acceleration with the three-axis acceleration sensor, the detected longitudinal acceleration, the vertical acceleration, and the By adding the acceleration storage means for storing the lateral acceleration together with the elapsed time data, and adding the absolute value of the longitudinal acceleration, the absolute value of the vertical acceleration, and the absolute value of the lateral acceleration at the same time, Unit activity amount calculating means for calculating a unit activity amount per unit time according to the elapsed time, and a unit for storing the unit activity amount together with the elapsed time data Dynamic amount storage means, analysis data extraction means for extracting the unit activity amount in a period in which the unit activity amount continues for a predetermined time, together with the elapsed time data, and the analysis data extraction means to extract and continue at the elapsed time Activity amount calculating means for calculating the sum of the unit activity amounts at the predetermined time as an activity amount, and the activity amount calculated by the activity amount calculating means by the foraging, the rumination, and the prone rest It is characterized by having a discriminating means based on the amount of activity for discriminating that it is the foraging rather than the rumination and the prone rest.
15. The ruminant behavior analysis apparatus according to claim 14, wherein a triaxial acceleration sensor is attached to a neck of the ruminant, and foraging, rumination, and prone rest are discriminated from acceleration obtained by the triaxial acceleration sensor. A ruminant behavior analysis apparatus that detects a longitudinal acceleration, a vertical acceleration, and a lateral acceleration with the three-axis acceleration sensor, the detected longitudinal acceleration, the vertical acceleration, and the By adding the acceleration storage means for storing the lateral acceleration together with the elapsed time data, and adding the absolute value of the longitudinal acceleration, the absolute value of the vertical acceleration, and the absolute value of the lateral acceleration at the same time, Unit activity amount calculating means for calculating a unit activity amount per unit time according to the elapsed time, and a unit for storing the unit activity amount together with the elapsed time data A dynamic amount storage means, an analysis data extraction means for extracting the unit activity amount in a period in which the unit activity amount continues for a predetermined time, together with the elapsed time data, and the analysis data extraction means, and before and after the elapsed time By comparing the amount of change calculated by the amount of change of the unit activity amount as the amount of change, the amount of change calculated by the amount of change calculator with the foraging, the rumination, and the prone rest And a discriminating means based on an amount of change for discriminating that it is the foraging rather than the rumination and the prone rest.

According to the present invention, foraging, rumination, and prone rest can be determined from longitudinal acceleration, vertical acceleration, and lateral acceleration.
Moreover, according to this invention, it can discriminate | determine that it is foraging by the amount of activity or the amount of change from among foraging, rumination, and prone rest.

FIG. 1 is a flowchart showing a ruminant behavior analysis method according to the first embodiment of the present invention; The block diagram showing the apparatus which implement | achieves the ruminant behavior analysis method by a 1st Example by the function implementation means Flow diagram showing a ruminant behavior analysis method according to a second embodiment of the present invention. The block diagram showing the apparatus which implement | achieves the ruminant behavior analysis method by 2nd Example by the function implementation means Flow diagram showing a ruminant behavior analysis method according to a third embodiment of the present invention. The block diagram which represented the apparatus which implement | achieves the ruminant behavior analysis method by 3rd Example by the function implementation means The photograph which shows the 1st control part demonstrated in the 1st-3rd Example of this invention The graph which shows the behavior of the cow, the unit activity amount monitored at 20Hz, and the unit activity amount per 2 hours with the elapsed time Graph showing characteristic changes in acceleration during foraging A graph showing characteristic changes in acceleration during rumination Graph showing characteristic changes in acceleration during prone rest Graph showing activity during foraging, rumination, and prone rest Graph showing changes in foraging, rumination, and prone rest Histogram of activity during foraging, rumination, and prone rest

  The ruminant behavior analysis method according to the first embodiment of the present invention includes a detection step of detecting a longitudinal acceleration, a vertical acceleration, and a horizontal acceleration with a three-axis acceleration sensor, a detected longitudinal acceleration, and a vertical direction. By adding the acceleration and the acceleration in the lateral direction together with the elapsed time data, and adding the absolute value of the longitudinal acceleration, the absolute value of the vertical acceleration, and the absolute value of the lateral acceleration at the same time, A unit activity amount calculating step for calculating a unit activity amount per unit time according to the elapsed time, a unit activity amount storing step for storing the unit activity amount together with elapsed time data, and a longitudinal direction in a period in which the unit activity amount continues for a predetermined time. An analysis data extraction step for extracting acceleration, vertical acceleration, and horizontal acceleration together with elapsed time data; And extracted with analytical data extraction step, longitudinal acceleration, vertical acceleration, and the lateral direction acceleration, those having eating, ruminating, and a determination step by the acceleration to determine at least one of the prone rest. According to the present embodiment, foraging, rumination, and prone rest, which are unit activity amounts, can be determined from the longitudinal acceleration, the vertical acceleration, and the lateral acceleration.

  According to a second embodiment of the present invention, in the ruminant behavior analysis method according to the first embodiment, in the determination step by acceleration, the longitudinal acceleration, the vertical acceleration, and the When the lateral acceleration exceeds a threshold value, it is determined that it is foraging rather than rumination and prone rest. According to this Embodiment, it can discriminate | determine that it is foraging by using a threshold value.

  According to a third embodiment of the present invention, in the ruminant behavior analysis method according to the first or second embodiment, in the determination step by acceleration, the difference between the longitudinal acceleration and the vertical acceleration at the same time, When the difference between the longitudinal acceleration and the lateral acceleration, or the difference between the vertical acceleration and the lateral acceleration exceeds a predetermined value, it is determined that it is foraging rather than rumination and prone rest. . According to the present embodiment, foraging is determined from the difference between the longitudinal acceleration and the vertical acceleration, the difference between the longitudinal acceleration and the lateral acceleration, or the difference between the vertical acceleration and the lateral acceleration. be able to.

  According to a fourth embodiment of the present invention, in the ruminant behavior analysis method according to any one of the first to third embodiments, in the determination step by acceleration, the longitudinal acceleration is performed at a predetermined time at a continuous elapsed time. However, when it changes greatly from a positive value to a negative value or from a negative value to a positive value, it is determined that the neck has moved from the bottom to the top or from the top to the bottom. According to the present embodiment, foraging can be determined by a change from a positive value to a negative value in the longitudinal acceleration.

According to a fifth embodiment of the present invention, in the ruminant behavior analysis method according to the first embodiment, in the step of determining by acceleration, the longitudinal acceleration, the vertical acceleration, and the The lateral acceleration is a uniform value that does not exceed the threshold value, and the longitudinal acceleration, the vertical acceleration, and the lateral acceleration at the same time are values of ± 0.5 m / sec ² or less and 70 to 1 per minute. If it occurs 90 times, it is determined that it is rumination, not foraging and prone rest. According to the present embodiment, rumination can be determined by determining swallowing.

  A ruminant behavior analysis method according to a sixth embodiment of the present invention includes a detection step of detecting a longitudinal acceleration per unit time, a vertical acceleration, and a horizontal acceleration with a three-axis acceleration sensor; Acceleration storage step for storing acceleration, vertical acceleration, and horizontal acceleration along with elapsed time data, and adding absolute value of longitudinal acceleration, absolute value of vertical acceleration, and absolute value of horizontal acceleration at the same time The unit activity amount calculating step for calculating the unit activity amount per unit time according to the elapsed time, the unit activity amount storing step for storing the unit activity amount together with the elapsed time data, and the unit activity amount continues for a predetermined time. Analytical data extraction step for extracting the unit activity in the period together with the elapsed time data, and analytical data extraction step The activity amount calculation step that calculates the activity amount as the activity amount, and the activity amount calculated in the activity amount calculation step is calculated as follows: foraging, rumination, and prone rest Compared with the above, there is a discrimination step based on the amount of activity that discriminates foraging rather than rumination and prone rest. According to this Embodiment, it can discriminate | determine that it is foraging according to activity amount from the foraging, rumination, and prone rest used as unit activity amount.

  A ruminant behavior analysis method according to a seventh embodiment of the present invention includes a detection step of detecting a longitudinal acceleration, a vertical acceleration, and a horizontal acceleration with a three-axis acceleration sensor, a detected longitudinal acceleration, and a vertical direction. By adding the acceleration and the acceleration in the lateral direction together with the elapsed time data, and adding the absolute value of the longitudinal acceleration, the absolute value of the vertical acceleration, and the absolute value of the lateral acceleration at the same time, A unit activity amount calculating step for calculating a unit activity amount per unit time according to the elapsed time, a unit activity amount storing step for storing the unit activity amount together with elapsed time data, and a unit activity in a period in which the unit activity amount continues for a predetermined time. The amount is extracted at the analysis data extraction step that extracts the data together with the elapsed time data and the analysis data extraction step. By comparing the change amount calculated in the change amount calculation step with the change amount calculation step in the change amount calculation step with the difference between the unit activity amount before and after accompanying with the foraging, rumination, and prone rest, rumination and And a determination step based on a change amount for determining that it is foraging, not for prone rest. According to the present embodiment, it is possible to determine that it is foraging based on the amount of change from among foraging, rumination, and prone rest, which are unit activity amounts.

  A ruminant behavior analysis apparatus according to an eighth embodiment of the present invention includes an acceleration storage unit that stores detected longitudinal acceleration, vertical acceleration, and lateral acceleration together with elapsed time data, A unit activity amount calculating means for calculating a unit activity amount per unit time according to the elapsed time by adding the absolute value of the directional acceleration, the absolute value of the vertical acceleration, and the absolute value of the lateral acceleration; and a unit activity amount Unit activity amount storage means for storing the time-lapse data together with the elapsed time data, analysis data extraction means for extracting the longitudinal acceleration, the vertical acceleration, and the left-right acceleration together with the elapsed time data in a period in which the unit activity amount continues for a predetermined time, Foraging, rumination, and prone leave from the longitudinal acceleration, vertical acceleration, and lateral acceleration extracted by the analysis data extraction means Of those with a discriminating means by acceleration to determine at least one. According to the present embodiment, foraging, rumination, and prone rest, which are unit activity amounts, can be determined from the longitudinal acceleration, the vertical acceleration, and the lateral acceleration.

  According to the ninth embodiment of the present invention, in the ruminant behavior analysis apparatus according to the eighth embodiment, the acceleration discriminating means performs a longitudinal acceleration, a vertical acceleration, and a right and left acceleration at a predetermined time at a continuous elapsed time. When the direction acceleration exceeds the threshold value, it is determined that the foraging is not rumination and prone rest. According to this Embodiment, it can discriminate | determine that it is foraging by using a threshold value.

  In the tenth embodiment of the present invention, in the ruminant behavior analysis apparatus according to the eighth or ninth embodiment, the discrimination means based on acceleration is the difference between the longitudinal acceleration and the vertical acceleration at the same time, When the difference between the directional acceleration and the lateral acceleration, or the difference between the vertical acceleration and the lateral acceleration exceeds a predetermined value, it is determined that the foraging is not rumination and prone rest. According to the present embodiment, foraging is determined from the difference between the longitudinal acceleration and the vertical acceleration, the difference between the longitudinal acceleration and the lateral acceleration, or the difference between the vertical acceleration and the lateral acceleration. be able to.

  According to an eleventh embodiment of the present invention, in the ruminant behavior analysis apparatus according to any one of the eighth to tenth embodiments, the acceleration-based discriminating means has a longitudinal acceleration at a predetermined time at a continuous elapsed time. In the case of a large change from a positive value to a negative value or from a negative value to a positive value, it is determined that the neck has moved from the bottom to the top or from the top to the bottom. According to the present embodiment, foraging can be determined by a change from a positive value to a negative value in the longitudinal acceleration.

According to the twelfth embodiment of the present invention, in the ruminant behavior analysis apparatus according to the eighth embodiment, in the discrimination means based on acceleration, the longitudinal acceleration, the vertical acceleration, and the horizontal The direction acceleration is a uniform value that does not exceed the threshold value, and the longitudinal acceleration, the vertical acceleration, and the horizontal acceleration at the same time are values of ± 0.5 m / sec ² or less and 70 to 90 per minute. If it occurs more than once, it is determined that it is a rumination rather than foraging and resting. According to the present embodiment, rumination can be determined by determining swallowing.

  A ruminant behavior analysis apparatus according to a thirteenth embodiment of the present invention includes a detection means for detecting longitudinal acceleration, vertical acceleration, and horizontal acceleration with a three-axis acceleration sensor, and detected longitudinal acceleration, vertical direction. By adding acceleration storage means for storing acceleration and lateral acceleration together with elapsed time data, and adding the absolute value of longitudinal acceleration, the absolute value of vertical acceleration, and the absolute value of lateral acceleration at the same time, Unit activity amount calculating means for calculating a unit activity amount per unit time according to the elapsed time, unit activity amount storage means for storing the unit activity amount together with elapsed time data, and unit activity in a period in which the unit activity amount continues for a predetermined time Analytical data extracting means for extracting the quantity together with the elapsed time data, and the analytical data extracting means to extract the quantity, and a predetermined value at the continuous elapsed time The activity amount calculation means that calculates the sum of the unit activity amount between activities as the activity amount, and the activity amount calculated by the activity amount calculation means are compared between foraging, rumination, and prone rest, rumination and prone It has a discriminating means based on the amount of activity for discriminating that it is foraging rather than resting. According to this Embodiment, it can discriminate | determine that it is foraging according to activity amount from the foraging, rumination, and prone rest used as unit activity amount.

  A ruminant behavior analysis apparatus according to a fourteenth embodiment of the present invention includes a detection unit that detects longitudinal acceleration, vertical acceleration, and horizontal acceleration with a three-axis acceleration sensor, and the detected longitudinal acceleration, vertical direction. By adding acceleration storage means for storing acceleration and lateral acceleration together with elapsed time data, and adding the absolute value of longitudinal acceleration, the absolute value of vertical acceleration, and the absolute value of lateral acceleration at the same time, Unit activity amount calculating means for calculating a unit activity amount per unit time according to the elapsed time, unit activity amount storage means for storing the unit activity amount together with elapsed time data, and unit activity in a period in which the unit activity amount continues for a predetermined time Analytical data extraction means to extract the quantity together with the elapsed time data and analytical data extraction means to extract the unit activity before and after the elapsed time By comparing the amount of change calculated by the amount of change between the foraging and rumination and the prone rest, the foraging instead of the rumination and prone rest is calculated. And a discriminating means based on the amount of change for discriminating. According to the present embodiment, it is possible to determine that it is foraging based on the amount of change from among foraging, rumination, and prone rest, which are unit activity amounts.

Embodiments of the present invention will be described below with reference to the drawings.
In the ruminant behavior analysis method of the present invention, a triaxial acceleration sensor is attached to the neck of a ruminant, and foraging, rumination, and prone rest are discriminated from the acceleration obtained by the triaxial acceleration sensor.
FIG. 1 is a flowchart showing a ruminant behavior analysis method according to a first embodiment of the present invention.
The ruminant behavior analysis method according to the first embodiment of the present invention includes a detection step 1 (S1) for detecting acceleration with a three-axis acceleration sensor, an acceleration storage step 2 (S2) for storing the detected acceleration, and a unit. Unit activity amount calculation step 3 (S3) for calculating the activity amount, unit activity amount storage step 4 (S4) for storing the calculated unit activity amount, analysis data extraction step 5 (S5) for extracting analysis data, Determination step 6 (S6) for determining foraging, rumination, and prone rest by acceleration.

In detection step 1, the longitudinal acceleration, the vertical acceleration, and the horizontal acceleration are detected by a three-axis acceleration sensor.
In the acceleration storage step 2, the detected longitudinal acceleration, vertical acceleration, and lateral acceleration are stored together with elapsed time data.
In unit activity amount calculation step 3, by adding the absolute value of the longitudinal acceleration, the absolute value of the vertical acceleration, and the absolute value of the lateral acceleration at the same time, the unit activity amount per unit time according to the elapsed time is added. Is calculated.
In the unit activity amount storage step 4, the unit activity amount is stored together with the elapsed time data.
In the analysis data extraction step 5, the longitudinal acceleration, the vertical acceleration, and the horizontal acceleration in a period in which a unit activity amount lower than a preset action extraction threshold continues for a predetermined time is extracted together with elapsed time data.
In the discrimination step 6 by acceleration, at least one of foraging, rumination, and prone rest is discriminated from the longitudinal acceleration, the vertical acceleration, and the lateral acceleration extracted in the analysis data extraction step 5.
According to the present embodiment, foraging, rumination, and prone rest, which are unit activity amounts lower than the action extraction threshold, can be determined from the longitudinal acceleration, the vertical acceleration, and the lateral acceleration.

In the determination step 6 based on acceleration, if the longitudinal acceleration, the vertical acceleration, and the horizontal acceleration exceed the threshold at a predetermined time at the continuing elapsed time, it is said that the foraging is not rumination and prone rest. Determine.
According to the present embodiment, it is possible to determine that it is foraging by using the threshold value.
In the discrimination step 6 by acceleration, the difference between the longitudinal acceleration and the vertical acceleration, the difference between the longitudinal acceleration and the lateral acceleration, or the difference between the vertical acceleration and the lateral acceleration at the same time is set to a predetermined value. If it exceeds, it is determined that it is foraging rather than rumination and prone rest.
According to the present embodiment, foraging is determined based on the difference between the longitudinal acceleration and the vertical acceleration, the difference between the longitudinal acceleration and the lateral acceleration, or the difference between the vertical acceleration and the lateral acceleration. Can do.
Further, in the discrimination step 6 by acceleration, if the longitudinal acceleration changes from a positive value to a negative value or from a negative value to a positive value at a predetermined time at a continuous elapsed time, the neck is changed. It is determined that it is foraging rather than rumination and prone resting if it is raised from the bottom (feeding tank) to the top (normal standing position) or lowered from the top (standing normal position) to the bottom (feeding tank).
According to the present embodiment, foraging can be determined by a change from a positive value to a negative value or a negative value to a positive value in the longitudinal acceleration.
In the discrimination step 6 based on acceleration, the longitudinal acceleration, the vertical acceleration, and the horizontal acceleration are uniform values that do not exceed the threshold values for a predetermined time at the continuing elapsed time. When the direction acceleration and the lateral acceleration occur at a value of ± 0.5 m / sec ² or less and occur 70 to 90 times per minute, it is determined that it is not a foraging and a prone rest but a rumination.
According to the present embodiment, rumination can be determined by determining swallowing.

FIG. 2 is a block diagram showing an apparatus for realizing the ruminant behavior analysis method according to the first embodiment of the present invention as function realizing means.
The ruminant behavior analysis apparatus according to the first embodiment discriminates foraging, rumination, and prone rest by receiving data from the first control unit 10 attached to the neck of the ruminant and the first control unit 10. And the second control unit 20.
The first control unit 10 includes a detection unit 11 including a three-axis acceleration sensor, an acceleration storage unit 12 that stores the detected acceleration, a unit activity amount calculation unit 13 that calculates a unit activity amount, and a calculated unit activity amount. Unit activity amount storage means 14 for storing, and transmission means 15 for transmitting data stored in the acceleration storage means 12 and the unit activity amount storage means 14 are provided.
The second control unit 20 includes a receiving unit 21 that receives data transmitted from the transmitting unit 15, a storage unit 22 that stores data received by the receiving unit 21, and analysis data among the data stored in the storage unit 22. Analysis data extracting means 23 for extracting the food, ruling and prone rest based on the acceleration, and output means 25 for outputting the result determined by the discriminating means 24.

The detection means 11 detects the longitudinal acceleration, the vertical acceleration, and the horizontal acceleration with a three-axis acceleration sensor.
The acceleration storage unit 12 stores the detected longitudinal acceleration, vertical acceleration, and lateral acceleration together with elapsed time data.
The unit activity amount calculating means 13 adds the absolute value of the longitudinal acceleration, the absolute value of the vertical acceleration, and the absolute value of the lateral acceleration at the same time, thereby adding the unit activity amount per unit time with the elapsed time. Is calculated.
The unit activity amount storage means 14 stores the unit activity amount together with the elapsed time data.
The transmission means 15 transmits the longitudinal acceleration, the vertical acceleration, the lateral acceleration, and the unit activity amount stored together with the elapsed time data.

The analysis data extraction unit 23 extracts the longitudinal acceleration, the vertical acceleration, and the lateral acceleration from the storage unit 22 together with the elapsed time data in a period in which a unit activity amount lower than a preset action extraction threshold continues for a predetermined time.
The acceleration discriminating unit 24 discriminates at least one of foraging, rumination, and prone rest from the longitudinal acceleration, the vertical acceleration, and the lateral acceleration extracted by the analysis data extracting unit 23.
In the determination means 24 based on acceleration, if the longitudinal acceleration, the vertical acceleration, and the horizontal acceleration exceed the threshold at a predetermined time at the continuous elapsed time, it is said that the foraging is not rumination and prone resting. Determine.
Further, in the discrimination means 24 by acceleration, the difference between the longitudinal acceleration and the vertical acceleration, the difference between the longitudinal acceleration and the lateral acceleration, or the difference between the vertical acceleration and the lateral acceleration at the same time is a predetermined value. If it exceeds, it is determined that it is foraging rather than rumination and prone rest.
Further, in the discrimination means 24 based on acceleration, when the longitudinal acceleration changes from a positive value to a negative value or from a negative value to a positive value at a predetermined time at a continuous elapsed time, the neck is changed. It is determined that it is foraging rather than rumination and prone resting if it is raised from the bottom (feeding tank) to the top (normal standing position) or lowered from the top (standing normal position) to the bottom (feeding tank).
Also, in the acceleration discriminating means 24, the longitudinal acceleration, the vertical acceleration, and the lateral acceleration are uniform values that do not exceed the threshold value for a predetermined time at the continuous elapsed time, and the longitudinal acceleration, vertical motion at the same time. When the direction acceleration and the lateral acceleration occur at a value of ± 0.5 m / sec ² or less and occur 70 to 90 times per minute, it is determined that it is not a foraging and a prone rest but a rumination.

FIG. 3 is a flowchart showing a ruminant behavior analysis method according to the second embodiment of the present invention.
The ruminant behavior analysis method according to the second embodiment of the present invention includes a detection step 1 for detecting acceleration with a three-axis acceleration sensor, an acceleration storage step 2 for storing the detected acceleration, and a unit for calculating a unit activity amount. Activity amount calculation step 3, unit activity amount storage step 4 for storing the calculated unit activity amount, analysis data extraction step 5 for extracting analysis data, and activity amount calculation step for calculating the sum of unit activity amounts as the activity amount 7 (S7) and determination step 8 (S8) for determining foraging, rumination, and prone rest based on the amount of activity.

In detection step 1, the longitudinal acceleration, the vertical acceleration, and the horizontal acceleration are detected by a three-axis acceleration sensor.
In the acceleration storage step 2, the detected longitudinal acceleration, vertical acceleration, and lateral acceleration are stored together with elapsed time data.
In unit activity amount calculation step 3, by adding the absolute value of the longitudinal acceleration, the absolute value of the vertical acceleration, and the absolute value of the lateral acceleration at the same time, the unit activity amount per unit time according to the elapsed time is added. Is calculated.
In the unit activity amount storage step 4, the unit activity amount is stored together with the elapsed time data.
In the analysis data extraction step 5, the longitudinal acceleration, the vertical acceleration, and the horizontal acceleration in a period in which a unit activity amount lower than a preset action extraction threshold continues for a predetermined time is extracted together with elapsed time data.
In the activity amount calculation step 7, the sum of unit activity amounts extracted at the analysis data extraction step 5 and at a predetermined time at the continuing elapsed time is calculated as the activity amount.
In the discrimination step 8 based on the activity amount, the activity amount calculated in the activity amount calculation step 7 is compared with foraging, rumination, and prone rest, so that it is discriminated not for rumination and prone rest. To do.
According to the present embodiment, it is possible to determine that it is foraging based on the amount of activity from among foraging, rumination, and prone rest, which are unit activity amounts lower than the action extraction threshold.

FIG. 4 is a block diagram showing an apparatus for realizing a ruminant behavior analysis method according to a second embodiment of the present invention using function realizing means. Since the first control unit 10 is the same as that of the first embodiment, the same reference numerals are given and description thereof is omitted.
The second control unit 20 includes a receiving unit 21 that receives data transmitted from the transmitting unit 15, a storage unit 22 that stores data received by the receiving unit 21, and analysis data among the data stored in the storage unit 22. Analytical data extraction means 23 for extracting the activity amount, activity amount calculation means 26 for calculating the sum of unit activity amounts as an activity amount, discrimination means 27 for discriminating foraging, rumination and prone rest by activity amount, and discrimination means 27 And an output means 25 for outputting the result determined in (1).

The analysis data extraction unit 23 extracts the longitudinal acceleration, the vertical acceleration, and the lateral acceleration from the storage unit 22 together with the elapsed time data in a period in which a unit activity amount lower than a preset action extraction threshold continues for a predetermined time.
The activity amount calculation means 26 extracts the analysis data extraction means 23 and calculates the sum of unit activity amounts for a predetermined time at the continuous elapsed time as the activity amount.
In the discrimination means 27 based on the activity amount, the activity amount calculated by the activity amount calculation means 26 is compared with foraging, rumination, and prone rest to discriminate that it is foraging rather than rumination and prone rest. To do.

FIG. 5 is a flowchart showing a ruminant behavior analysis method according to a third embodiment of the present invention.
A ruminant behavior analysis method according to a third embodiment of the present invention includes a detection step 1 for detecting acceleration with a three-axis acceleration sensor, an acceleration storage step 2 for storing the detected acceleration, and a unit for calculating a unit activity amount. Activity amount calculation step 3, unit activity amount storage step 4 for storing the calculated unit activity amount, analysis data extraction step 5 for extracting analysis data, and change amount calculation step for calculating a difference between unit activity amounts as a change amount 9 (S9) and determination step 10 (S10) for determining foraging, rumination, and prone rest based on the amount of change.

In detection step 1, the longitudinal acceleration, the vertical acceleration, and the horizontal acceleration are detected by a three-axis acceleration sensor.
In the acceleration storage step 2, the detected longitudinal acceleration, vertical acceleration, and lateral acceleration are stored together with elapsed time data.
In unit activity amount calculation step 3, by adding the absolute value of the longitudinal acceleration, the absolute value of the vertical acceleration, and the absolute value of the lateral acceleration at the same time, the unit activity amount per unit time according to the elapsed time is added. Is calculated.
In the unit activity amount storage step 4, the unit activity amount is stored together with the elapsed time data.
In the analysis data extraction step 5, the longitudinal acceleration, the vertical acceleration, and the horizontal acceleration in a period in which a unit activity amount lower than a preset action extraction threshold continues for a predetermined time is extracted together with elapsed time data.
In the change amount calculation step 9, the difference is extracted in the analysis data extraction step 5, and the difference between the unit activity amounts before and after the elapsed time is calculated as the change amount.
In the discrimination step 10 based on the change amount, the change amount calculated in the change amount calculation step 9 is compared with foraging, rumination, and prone rest, so that it is discriminated not for rumination and prone rest but foraging. To do.
According to the present embodiment, it is possible to determine that the foraging is based on the amount of change from among foraging, rumination, and prone rest, which are unit activity amounts lower than the action extraction threshold.

FIG. 6 is a block diagram showing an apparatus for realizing a ruminant behavior analysis method according to a third embodiment of the present invention as function realizing means. Since the first control unit 10 is the same as that of the first embodiment, the same reference numerals are given and description thereof is omitted.
The second control unit 20 includes a receiving unit 21 that receives data transmitted from the transmitting unit 15, a storage unit 22 that stores data received by the receiving unit 21, and analysis data among the data stored in the storage unit 22. Analysis data extraction means 23 for extracting a difference, a change amount calculation means 28 for calculating a difference between unit activity amounts as a change amount, a determination means 29 for determining foraging, rumination, and prone rest based on the change amount, and a determination means 29 And an output means 25 for outputting the result determined in (1).

The analysis data extraction unit 23 extracts the longitudinal acceleration, the vertical acceleration, and the lateral acceleration from the storage unit 22 together with the elapsed time data in a period in which a unit activity amount lower than a preset action extraction threshold continues for a predetermined time.
In the change amount calculation means 28, the difference is extracted by the analysis data extraction means 23, and the difference between the unit activity amounts before and after the elapsed time is calculated as the change amount.
In the discriminating means 29 based on the change amount, the change amount calculated by the change amount calculating means 28 is compared with foraging, rumination, and prone rest to discriminate that it is foraging rather than rumination and prone rest. To do.

FIG. 7 is a photograph showing the first control unit described in each embodiment.
The first control unit 10 is attached to the right neck of the cow.

FIG. 8 is a graph showing a unit activity amount per two hours with the elapsed time described in the first to third embodiments.
In FIG. 8, the horizontal axis represents elapsed time, and the vertical axis represents longitudinal acceleration, vertical acceleration, and horizontal acceleration at the same time.
The action extraction threshold A shown in FIG. 8 is set to 0.5 m / sec ² , for example, and is divided into a high unit activity amount such as walking motion and a low unit activity amount such as foraging, rumination, and prone rest. To do.
In the present invention, the period in which the unit activity amount lower than the preset action extraction threshold A continues for a predetermined time is extracted as one of the behavior patterns of foraging, rumination, and prone rest.
Although the data exceeding the action extraction threshold A in FIG. 8 is noise generated due to a collision of the equipment, continuous data exceeding the action extraction threshold A is generated in the case of walking motion. For example, by setting the foraging upper limit value as the behavior extraction threshold A and excluding the data range exceeding the behavior extraction threshold A, it is possible to extract the behavior related to foraging, rumination, and prone rest.

9 to 11 are graphs showing characteristic changes in acceleration in foraging, rumination, and prone rest, FIG. 9 shows foraging, FIG. 10 shows rumination, and FIG. 11 shows prone rest.
A logger with a triaxial acceleration sensor (manufactured by Bisen) was used, the sampling period was 20 Hz, and the amplitude resolution was 10 bits.
A logger was attached to the right cervical region of the test cow, and the behavior of the test cow was recorded together with the video, and the time of foraging, rumination and resting behavior was visually confirmed from the video recording, and acceleration data was detected.

The threshold value B shown in FIG. 9 is set to 0.1 m / sec ² , for example. By setting the threshold B to 0.1 m / sec ² , the acceleration exceeds the threshold B in FIG. 9 showing foraging, whereas the acceleration in FIG. 10 showing rumination and FIG. 11 showing prone rest Is lower than threshold B.
Therefore, when the longitudinal acceleration, the vertical acceleration, and the horizontal acceleration exceed the threshold B, it can be determined that the foraging is not rumination and prone rest.
Next, focusing on longitudinal acceleration, vertical acceleration, and lateral acceleration at the same time, in FIG. 9 showing foraging, each acceleration is random at the same time in the longitudinal direction, the vertical direction, and the horizontal direction. In contrast, in FIG. 10 showing rumination and FIG. 11 showing prone rest, the respective accelerations show almost the same magnitude and uniform magnitude.
Therefore, when the difference between the longitudinal acceleration and the vertical acceleration at the same time, the difference between the longitudinal acceleration and the lateral acceleration, or the difference between the vertical acceleration and the lateral acceleration exceeds a predetermined value. Therefore, it can be determined that it is foraging rather than rumination and prone rest.

In addition, as shown in FIG. 9, when the longitudinal acceleration changes from a positive value to a negative value or from a negative value to a positive value at a predetermined time at a continuous elapsed time, It is determined that it is foraging rather than rumination and prone resting if it is raised from the bottom (feeding tank) to the top (standing normal position) or lowered from the top (standing normal position) to the bottom (feeding tank) be able to.
As shown in FIG. 10, in swallowing, the longitudinal acceleration, the vertical acceleration, and the lateral acceleration at the same time occur 70 to 90 times per minute with a value of ± 0.5 m / sec ² or less. Yes.
Accordingly, the longitudinal acceleration, the vertical acceleration, and the lateral acceleration are uniform values that do not exceed the threshold B during a predetermined time at the continuous elapsed time, and the longitudinal acceleration, the vertical acceleration, and the lateral acceleration at the same time. When the direction acceleration occurs at a value of ± 0.5 m / sec ² or less and occurs 70 to 90 times per minute, it can be determined that it is a rumination rather than foraging and prone rest.
As shown in FIG. 11, in prone rest, there is little change in acceleration because there is little body movement.

  FIG. 12 is a graph showing the amount of activity in foraging, rumination, and prone rest, FIG. 13 is a graph showing the amount of change in foraging, rumination, and prone rest, and FIG. 14 is foraging, rumination, and prone rest. It is a histogram of the amount of activity in. Statistical analysis uses analysis of variance.

The vertical axis shown in FIG. 12 is the average value of the sum of unit activity amounts (activity amount) at the continuous elapsed time, and the vertical axis shown in FIG. 12 is the difference (change amount) between the unit activity amounts before and after the elapsed time. ) Average value.
As shown in FIG. 12, there is a significant difference in the amount of activity between foraging and rumination, foraging and prone resting, and foraging depends on the amount of activity from foraging, rumination, and prone resting. Can be determined.
As shown in FIG. 13, there is a significant difference in the amount of change between foraging and rumination, and foraging and prone resting. Foraging, rumination, and prone resting depend on the amount of change. Can be determined.

In FIG. 14, the horizontal axis represents unit activity and the vertical axis represents frequency.
As shown in FIG. 14 (a), during the foraging, the large movement of the neck and the fine movement of mastication are linked, so the distribution of unit activity is wide and no clear peak is recognized.
As shown in FIG. 14 (b), since the movement is periodic in three directions during rumination, the distribution is close to the normal distribution, and as shown in FIG. Since there is little movement with particularly high rhythmicity, the distribution on one side with small acceleration is shown.
Thus, foraging, rumination, and prone rest can also be determined by using the histogram distribution.

  The ruminant behavior analysis method and behavior analysis apparatus of the present invention can grasp the health status, estrus, or delivery timing of ruminants by discriminating foraging, rumination, and prone rest.

DESCRIPTION OF SYMBOLS 10 1st control part 11 Detection means 12 Acceleration memory | storage means 13 Unit activity amount calculation means 14 Unit activity amount storage means 15 Transmission means 20 2nd control part 21 Reception means 22 Storage means 23 Analytical data extraction means 24 Discriminating means 25 Output means 26 Activity amount calculating means 27 Discriminating means 28 Change amount calculating means 29 Discriminating means A Action extraction threshold B Threshold

Claims (14)

A ruminant behavior analysis method for attaching a three-axis acceleration sensor to a ruminant's neck and determining foraging, rumination, and prone rest from acceleration obtained by the three-axis acceleration sensor,
A detection step of detecting longitudinal acceleration, vertical acceleration, and lateral acceleration with the three-axis acceleration sensor;
An acceleration storage step for storing the detected longitudinal acceleration, the vertical acceleration, and the lateral acceleration detected together with elapsed time data;
Unit activity for calculating the unit activity amount per unit time with the elapsed time by adding the absolute value of the longitudinal acceleration, the absolute value of the vertical acceleration, and the absolute value of the lateral acceleration at the same time A quantity calculating step;
A unit activity amount storing step for storing the unit activity amount together with the elapsed time data;
An analysis data extraction step of extracting the longitudinal acceleration, the vertical acceleration, and the lateral acceleration together with the elapsed time data in a period in which the unit activity amount continues for a predetermined time;
A step of determining by acceleration that determines at least one of the foraging, rumination, and prone rest from the longitudinal acceleration, the vertical acceleration, and the lateral acceleration extracted in the analysis data extraction step; A method for analyzing the behavior of ruminants, comprising: In the discrimination step based on the acceleration,
At the predetermined time at the elapsed time to continue, the longitudinal acceleration, the vertical acceleration, and the horizontal acceleration are:
The ruminant behavior analysis method according to claim 1, wherein when the threshold value is exceeded, it is determined that the foraging is not the rumination and the prone rest, but the foraging. In the discrimination step based on the acceleration,
The difference between the longitudinal acceleration and the vertical acceleration at the same time, the difference between the longitudinal acceleration and the lateral acceleration, or the difference between the vertical acceleration and the lateral acceleration exceeds a predetermined value. 3. The method of analyzing ruminant behavior according to claim 1, wherein if it is, it is determined that the foraging is not the rumination and the prone rest. In the discrimination step based on the acceleration,
When the longitudinal acceleration changes greatly from a positive value to a negative value or from a negative value to a positive value at the predetermined time at the elapsed time to continue, the neck is from bottom to top, It is discriminate | determined that it moved from the top to the bottom, The ruminant behavior analysis method in any one of Claims 1-3 characterized by the above-mentioned. In the discrimination step based on the acceleration,
At the predetermined time at the elapsed time to continue, the longitudinal acceleration, the vertical acceleration, and the horizontal acceleration are:
It is a uniform value that does not exceed the threshold,
When the longitudinal acceleration, the vertical acceleration, and the lateral acceleration at the same time occur at a value of ± 0.5 m / sec ² or less 70 to 90 times per minute, the foraging and 2. The ruminant behavior analysis method according to claim 1, wherein it is determined that the rumination is not the prone rest. A ruminant behavior analysis method for attaching a three-axis acceleration sensor to a ruminant's neck and determining foraging, rumination, and prone rest from acceleration obtained by the three-axis acceleration sensor,
A detection step of detecting longitudinal acceleration, vertical acceleration, and lateral acceleration with the three-axis acceleration sensor;
An acceleration storage step for storing the detected longitudinal acceleration, the vertical acceleration, and the lateral acceleration detected together with elapsed time data;
Unit activity for calculating the unit activity amount per unit time with the elapsed time by adding the absolute value of the longitudinal acceleration, the absolute value of the vertical acceleration, and the absolute value of the lateral acceleration at the same time A quantity calculating step;
A unit activity amount storing step for storing the unit activity amount together with the elapsed time data;
An analysis data extraction step for extracting the unit activity amount in a period in which the unit activity amount continues for a predetermined time together with the elapsed time data;
An activity amount calculating step of extracting the analysis data extraction step and calculating a total amount of the unit activity amounts at the predetermined time at the elapsed time to be continued as an activity amount;
An activity to determine that the activity amount calculated in the activity amount calculation step is not the rumination and the prone rest but the foraging by comparing the activity amount with the foraging, the rumination, and the prone rest A method for analyzing the behavior of ruminants, comprising the step of discriminating by quantity. A ruminant behavior analysis method for attaching a three-axis acceleration sensor to a ruminant's neck and determining foraging, rumination, and prone rest from acceleration obtained by the three-axis acceleration sensor,
A detection step of detecting longitudinal acceleration, vertical acceleration, and lateral acceleration with the three-axis acceleration sensor;
An acceleration storage step for storing the detected longitudinal acceleration, the vertical acceleration, and the lateral acceleration detected together with elapsed time data;
Unit activity for calculating the unit activity amount per unit time with the elapsed time by adding the absolute value of the longitudinal acceleration, the absolute value of the vertical acceleration, and the absolute value of the lateral acceleration at the same time A quantity calculating step;
A unit activity amount storing step for storing the unit activity amount together with the elapsed time data;
An analysis data extraction step for extracting the unit activity amount in a period in which the unit activity amount continues for a predetermined time together with the elapsed time data;
A change amount calculating step of extracting in the analysis data extraction step and calculating a difference between the unit activity amounts before and after the elapsed time as a change amount;
A change that discriminates not the rumination and the prone rest but the foraging by comparing the amount of change calculated in the change amount calculating step with the foraging, rumination, and prone rest A method for analyzing the behavior of ruminants, comprising the step of discriminating by quantity. Analysis of ruminant behavior that distinguishes foraging, rumination, and prone rest based on longitudinal acceleration, vertical acceleration, and lateral acceleration per unit time obtained by a three-axis acceleration sensor attached to the neck of the ruminant A device,
Acceleration storage means for storing the detected longitudinal acceleration, the vertical acceleration, and the lateral acceleration detected together with elapsed time data;
Unit activity for calculating the unit activity amount per unit time with the elapsed time by adding the absolute value of the longitudinal acceleration, the absolute value of the vertical acceleration, and the absolute value of the lateral acceleration at the same time A quantity calculating means;
Unit activity amount storage means for storing the unit activity amount together with the elapsed time data;
Analysis data extraction means for extracting the longitudinal acceleration, the vertical acceleration, and the lateral acceleration together with the elapsed time data in a period in which the unit activity amount continues for a predetermined time;
Discrimination means by acceleration for discriminating at least one of the foraging, rumination, and prone rest from the longitudinal acceleration, the vertical acceleration, and the lateral acceleration extracted by the analysis data extraction means; A ruminant behavior analysis apparatus characterized by comprising: In the discrimination means based on the acceleration,
At the predetermined time at the elapsed time to continue, the longitudinal acceleration, the vertical acceleration, and the horizontal acceleration are:
9. The ruminant behavior analysis apparatus according to claim 8, wherein when the threshold value is exceeded, it is determined that the foraging is not the rumination and the prone rest, but the foraging. In the discrimination means based on the acceleration,
The difference between the longitudinal acceleration and the vertical acceleration at the same time, the difference between the longitudinal acceleration and the lateral acceleration, or the difference between the vertical acceleration and the lateral acceleration exceeds a predetermined value. 10. The ruminant behavior analysis apparatus according to claim 8, wherein if it is, it is determined that the foraging is not the rumination and the prone rest. 10. In the discrimination means based on the acceleration,
When the longitudinal acceleration changes greatly from a positive value to a negative value or from a negative value to a positive value at the predetermined time at the elapsed time to continue, the neck is from bottom to top, It is discriminate | determined that it moved from the top to the bottom, The ruminant behavior analysis apparatus in any one of Claims 8-10 characterized by the above-mentioned. In the discrimination means based on the acceleration,
At the predetermined time at the elapsed time to continue, the longitudinal acceleration, the vertical acceleration, and the horizontal acceleration are:
It is a uniform value that does not exceed the threshold,
When the longitudinal acceleration, the vertical acceleration, and the lateral acceleration at the same time occur at a value of ± 0.5 m / sec ² or less 70 to 90 times per minute, the foraging and 9. The ruminant behavior analysis apparatus according to claim 8, wherein it is determined that the rumination is not the prone rest. A ruminant behavior analysis device that attaches a triaxial acceleration sensor to a ruminant's neck and determines foraging, rumination, and prone rest from acceleration obtained by the triaxial acceleration sensor,
Detection means for detecting longitudinal acceleration, vertical acceleration, and lateral acceleration with the three-axis acceleration sensor;
Acceleration storage means for storing the detected longitudinal acceleration, the vertical acceleration, and the lateral acceleration detected together with elapsed time data;
Unit activity for calculating the unit activity amount per unit time with the elapsed time by adding the absolute value of the longitudinal acceleration, the absolute value of the vertical acceleration, and the absolute value of the lateral acceleration at the same time A quantity calculating means;
Unit activity amount storage means for storing the unit activity amount together with the elapsed time data;
Analysis data extraction means for extracting the unit activity amount in a period in which the unit activity amount continues for a predetermined time together with the elapsed time data;
An activity amount calculating means for extracting as the activity amount the total of the unit activity amounts at the predetermined time at the elapsed time to be extracted by the analysis data extracting means;
An activity for discriminating not the rumination and the prone rest but the foraging by comparing the activity amount calculated by the activity amount calculating means with the foraging, the rumination, and the prone rest A ruminant behavior analysis apparatus comprising: a discrimination means based on a quantity. A ruminant behavior analysis device that attaches a triaxial acceleration sensor to a ruminant's neck and determines foraging, rumination, and prone rest from acceleration obtained by the triaxial acceleration sensor,
Detection means for detecting longitudinal acceleration, vertical acceleration, and lateral acceleration with the three-axis acceleration sensor;
Acceleration storage means for storing the detected longitudinal acceleration, the vertical acceleration, and the lateral acceleration detected together with elapsed time data;
Unit activity for calculating the unit activity amount per unit time with the elapsed time by adding the absolute value of the longitudinal acceleration, the absolute value of the vertical acceleration, and the absolute value of the lateral acceleration at the same time A quantity calculating means;
Unit activity amount storage means for storing the unit activity amount together with the elapsed time data;
Analysis data extraction means for extracting the unit activity amount in a period in which the unit activity amount continues for a predetermined time together with the elapsed time data;
A change amount calculating means for extracting by the analysis data extracting means and calculating a difference between the unit activity amounts before and after the elapsed time as a change amount;
A change that discriminates not the rumination and the prone rest but the foraging by comparing the change amount calculated by the change amount calculating means with the foraging, the rumination, and the prone rest A ruminant behavior analysis apparatus comprising: a discrimination means based on a quantity.