JP6741997B2 - Barn - Google Patents

Description

The present invention relates to a livestock house that can be used for a cowhouse, a poultry house, a pighouse, and the like, and relates to a livestock house that is ventilated by push-pull ventilation.

In dairy farming, the conception rate of cows declines in hot summer, and cows after calving also suffer from heat stress, resulting in a decrease in milk production. For this problem, some proposals have been made from the viewpoint of making the environment of the barn where cows live comfortable.

Patent Document 1 discloses a tunnel ventilation type barn structure. Here, both end walls including an opening/closing part, side walls, an outside air inflow passage that always allows the outside air to flow into one end wall of the cowshed main body closed by a roof, and an air exhaust device provided on the other end wall. , An air circulation device that circulates a part of the air in the barn is disclosed.

That is, in the cowshed of Patent Document 1, the air discharge device is provided on one short side of the rectangular cowshed and the outside air inflow path is provided on the other short side of the cowshed, so that air flow is created in the lengthwise direction of the rectangle. is there. The air circulation device is provided to prevent the temperature inside the barn from dropping too much by circulating a part of the air inside the barn during the cold season in winter, instead of ventilating all of the air.

Further, the air discharging device increases or decreases the number of operating air exhaust fans for air discharge based on the temperature detecting device in the barn. That is, the wind speed inside the barn is changed based on the temperature inside the barn.

There are several proposals for livestock houses that keep livestock such as cows, pigs, and chickens, not limited to barns, that control the wind based on the temperature inside the house. Patent Document 2 discloses a control method in which a plurality of air blowers are arranged in a livestock shed and the air volume is individually set based on the temperature at the place where the air blower is installed.

Further, Patent Document 3 discloses a blowing method in which the air volume is made variable according to the environment of a livestock shed, the type of livestock, and the number of housing. Further, Patent Document 4 discloses a control method of controlling the rotation speed of a fan so that the CO ₂ concentration corresponding to the outside temperature and the body weight is controlled. Further, Patent Document 5 discloses a technique of attaching a body temperature sensor to each livestock and controlling a ventilation device based on a change in body temperature.

The purpose of these inventions is to create a flow of air in a barn to reduce the body temperature of cows in the summer and not to reduce the milking amount.

Noboru 3110491 publication JP 2007-23912 A JP, 2004-190616, A Japanese Patent Laid-Open No. 02-195832 Japanese Patent Laid-Open No. 01-157324

Patent Documents 1 to 5 attempt to raise cows comfortably by causing a flow of air in a barn as a measure against heat. However, it cannot be said that the discomfort of cows has been completely eliminated only by blowing air based on the temperature inside the barn. As a result, the reduction in milk yield does not improve much.

In this regard, in Patent Document 5, since the livestock house is ventilated based on the body temperature of each livestock, attention is paid to each individual. However, discomfort varies from animal to animal as in humans, and it is possible to increase the comfort level and milking level of the entire stall simply by relating the average body temperature to the ventilation of the entire stall and controlling the ventilation operation. It is thought that it cannot be done. It is necessary to improve the comfort of each animal as a whole.

That is, regardless of the free-burn method, the free-stall method, or the connection method, in order to improve the comfort of each individual, vital signs (individual information) of each individual and It is necessary to correlate the position of the individual so that heat countermeasures can be taken.

In view of such a situation, the present invention provides a barn capable of providing a measure against heat that is comfortable for all cows in the barn and improving the reduction of milking amount in summer.

In order to solve the above problems, in the present invention, push-pull ventilation is performed that can create a uniform air flow that can be said to be a uniform flow throughout the livestock house. In addition, a barn that reduces stress on each individual is provided by using either or both of the individual information and the position information.

More specifically, the barn according to the present invention is
A rectangular floor,
A pair of side walls provided on the long side of the floor,
A pair of end walls provided on the short side of the floor,
A roof disposed above the side wall and the end wall,
A pull side blower is installed in parallel on the first side wall of the pair of side walls,
A push-side blower is disposed on the second side wall of the pair of side walls,
A temperature sensor that measures the temperature inside the barn,
A communication device for receiving an individual signal from an individual information terminal attached to a livestock belonging to the livestock house,
If there is position information in the individual signal, stress information and body temperature information does not exist,
Barn, characterized in that it comprises a controller for controlling the rotational speed of the blower based on the positioning of livestock from the barn temperature before Symbol position location information.

INDUSTRIAL APPLICABILITY Since the stall of the present invention performs push-pull ventilation between the side walls provided on the opposite long side portions of the rectangle, it is possible to generate a uniform air flow that can be said to be a uniform flow, and cows can be used anywhere in the stall. Can receive a comfortable flow of air.

Also, a uniform air flow can eliminate the accumulation of ammonia and carbon dioxide in the barn. In addition, the uniform airflow prevents pests such as sand flies from staying inside the barn. This reduces the stinging of cows by the sand flies and reduces the stress on the cows, and thus the reduction in milk production can be suppressed. Further, since the livestock building is closed, it is possible to prevent invasion of harmful animals such as birds.

Furthermore, an individual information terminal for acquiring individual information is attached to each individual, and individual information is acquired at least periodically. Then, by combining the individual information and the positional information of each individual, it is possible to intensively supply the wind to the individual or group of individuals considered to have high stress.

By these effects, the conception rate can be improved even in the summer, and the reduction in the milking amount which is said to fall in the summer can be prevented.

FIG. 1 is an external perspective view of a barn (cow) according to the present invention. It is the side wall of the long side of the cowshed and its enlarged view. It is a figure showing the end wall by the side of the short side of a cowshed. It is a figure which shows an example of the air blower used for a cowshed. It is a simulation result figure which shows the flow of the air at the time of performing push pull ventilation. It is a simulation result figure which shows the flow of the air at the time of performing only pull ventilation. It is a simulation result figure which shows the flow of air at the time of arranging a push fan only in the position which opposes both ends of pull ventilation and pull ventilation. It is a figure showing arrangement|positioning of the blower of a barn and a through-hole. It is a figure which shows the connection relation of a control system. It is a flowchart which shows a main process. It is a flowchart which shows the process of individual information acquisition. It is a flowchart which shows a stress process. It is a flowchart which shows the process in the case where there is stress due to causes other than heat during the stress process. It is a figure which shows the flow of a body temperature process. It is a figure which shows the flow of a position process. It is a figure which illustrates the positional relationship at the time of performing a position process.

The livestock shed according to the present invention will be described below with reference to the drawings. Note that the following description is an explanation of one embodiment of a livestock stall according to the present invention, and the present invention is not limited to this. The following embodiments can be modified without departing from the spirit of the present invention. In addition, in the following description, a livestock barn will be described as a cowshed. However, the livestock house of the present invention is not particularly limited to a cow house, and can be applied to a chicken house and a pig house.

FIG. 1 shows a perspective view of a livestock house (cow) according to the present invention. 2 shows a side view of the cowshed 1 and a partially enlarged view thereof. 3 shows a side view of the cowshed 1 in the direction of the short side. With reference to FIGS. 1, 2, and 3, the cowshed 1 is provided with a rectangular floor surface 10, end walls 12 a and 12 b provided on the short side of the floor surface 10, and long sides of the floor surface 10. It is formed by the side walls 14a and 14b and the roof 16.

The floor surface 10 has a rectangular shape. However, it does not exclude squares. There may be some distortion depending on the land where the barn is constructed. Here, “distortion” includes a situation in which each side is not a perfect straight line or the angle forming each side is deviated from 90 degrees. However, since the cowshed 1 ensures the comfort of the cow by generating a uniform air flow in the house, it is not preferable that the cowshed is so distorted that the uniform air flow is obstructed. ..

The finish of the floor surface 10 is not particularly limited, and some embankment may be provided. However, it is not preferable that the embankment has irregularities to the extent that it disturbs the uniform air flow described later.

Referring to FIG. 3, end walls 12a and 12b are provided on opposing short sides of rectangular floor surface 10. Opening/closing doors 13a and 13b are provided here. The open/close doors 13a and 13b are used for the entry and exit of cows to and from the barn 1 and the entry and exit of work vehicles or workers. Usually, it is desirable to close the opening/closing doors 13a and 13b. This is because if the end walls 12a and 12b have openings, they will disturb the uniform air flow generated in the cowshed 1.

With reference to FIG. 2, the side walls 14a are provided on opposite long sides of the rectangular floor surface 10. Since the side wall 14a and the side wall 14b are almost the same, the description will be continued on the side wall 14a. A through hole 14ah (through hole 14bh for the side wall 14b) is formed in the side wall 14a. The through hole 14ah may be one through hole that spreads over the side wall, or a plurality of through holes may be provided. A blower 20a (20b) described later is installed in the through hole 14ah (14bh). Further, the through hole 14ah may be formed after forming the side wall 14a or the wall member (board-like material forming the side wall), or may be provided by combining the wall members having the concave cuts. It may be a hole in the side wall 14a.

Referring to FIG. 1, since roof 16 is a part that forms a space for creating a uniform air flow in cowshed 1, it is desirable that the roof 16 has a flatness of the ceiling that does not hinder the air flow. When the roof 16 directly serves as a ceiling, the roof 16 is preferably flat. The shape is not particularly limited, and a gable roof, a hipped roof, or the like may be freely used. A gable roof with a slope of the roof 16 of 1 inch (5.7 degrees) can be preferably used. In a cold region, a two-dimensional gradient (11.4 degrees) may be used from the viewpoint of preventing snow accumulation and the strength of the roof 16. In addition, even if the slope is larger than this, by providing a baffle curtain called a baffle in the cowshed 1, the air flow can be made uniform without forming a ceiling.

FIG. 2A shows a front view of the side wall 14a, and FIG. 2B shows a partially enlarged view. Blowers 20a and 20b are installed in the through holes 14ah and 14bh provided in the side walls 14a and 14b. The blowers 20a and 20b are preferably arranged on the respective side walls 14a and 14b in the same number and are preferably arranged on the entire surfaces of the side walls 14a and 14b. Further, it is desirable that the adjacent blowers are arranged at equal intervals, and it is desirable that the distance between the adjacent blowers is within a diameter of 20 d of the fan to be used. This is because in order to create a uniform air flow, a space where air does not flow is created if the gaps between the adjacent blowers are too wide. However, as described later, even if the above conditions are not satisfied, a mode in which a uniform air flow can be created is not excluded.

FIG. 4 shows an example of one blower 20. 4A is a side view and FIG. 4B is a plan view. The blower 20 has a size of 1120 mm×1120 mm, and has the same width 20 w and height. The fan diameter 20d has a size of 1000 mm. The front surface 20f and the rear surface 20r of the blower 20 are provided with blade guards formed of wire. Air enters from the rear surface 20r and is blown out from the front surface 20f. The blower 20 illustrated in FIG. 4 is a blower 20 of a type in which the suction side and the blowing side are determined, but it is more preferable if the blower 20 is a type in which both sides can be the suction side depending on the rotation direction of the fan.

Please refer to FIG. 2 again. As shown in FIG. 2A, the blower 20 is arranged on the entire surface of one side wall. In FIG. 2, through holes 14ah1 and 14ah2 are provided vertically close to the side wall 14a, and the blower 20a is installed in each of the through holes 14ah1 and 14ah2. That is, it is a configuration in which the blowers 20a are arranged in two stages in the vertical direction.

When viewed in the lateral direction, there are a narrow portion 15a and a wide portion 15b in the space between the through holes 14ah1 and 14ah2. The wide portion 15b is a place where a pillar or the like of the side wall 14a (14b) is provided. Both the narrow portion 15a and the wide portion 15b are installed at intervals smaller than the diameter 20d of the fan of the blower 20a. Here, the interval between the adjacent blowers means the distance at which the tips of the fans of the adjacent blowers are the shortest.

Also, at both ends of the side wall 14a, the distance from the ends 14at1 and 14at2 to the first blower 20a is arranged at an interval shorter than the diameter 20d of the fan of the blower 20a. Further, as shown in FIG. 2, even when the blowers 20a are vertically stacked, the distance between the blowers 20a is shorter than the diameter 20d of the fan. The blower 20a may be arranged in only one stage. This is because it is sufficient if a uniform air flow can be made from the floor surface 10 to the height of the cow's head. Further, the blower 20a is not excluded from being arranged in three or more stages.

Although not shown, the blower 20b is similarly arranged on the entire surface of the other side wall 14b. The blower 20a arranged on the entire surface of one side wall 14a and the blower 20b arranged on the other side wall 14b are arranged at positions where the respective blowers 20a and 20b face each other. Here, the facing positions refer to a positional relationship in which the axial centers of the fans of the blowers 20a and 20b facing each other are substantially aligned with each other.

However, since the air flows over a sufficiently long distance (at least a distance of 10 m or more) from the one side wall 14a to the other side wall 14b, a uniform air flow is created even if the blowers 20a and 20b are not in positions facing each other. You can As shown in FIG. 4, when a blower whose suction and discharge directions are determined is used, the blower placed on one side wall of the cowshed 1 should be placed on the other side wall with its suction side facing outward (push side blower). The blower has the discharge side facing outward (pull side blower).

The push-side blower may be a blower in which the blower is arranged in the suction direction, and the pull-side blower may be called a blower in which the blower is arranged in the discharge direction. The side wall 14b where the pull side blower is arranged is called a first side wall, and the side wall 14a where the push side blower is arranged is called a second side wall.

FIG. 5 shows a vector diagram simulating the flow of air that occurs in the barn when these blowers are operated simultaneously. The cowshed had a frontage 12w of 25 m, a depth 14w of 48 m, and an eave height of 16 h (see FIG. 3) of 3 m. Further, the push side 14 push and the pull side 14 pull were respectively arranged in two stages with 22 fans each having a diameter of 1 m and an air flow rate of 345 m ³ /min. It is assumed that a uniform air flow with a wind speed of 2 m/s is created in the cowshed 1. This is a calculation using a total of 88 blowers.

The arrow in the barn in FIG. 5 indicates a wind speed of 2 m/s. It can be seen that an air flow with a wind speed of 2 m/s is generated to every corner of the barn.

On the other hand, FIG. 6 shows a vector diagram of a simulation in which the blower 20b is arranged only on the other side wall 14b and only the through hole 14ah is formed on the one side wall 14a. A uniform air flow of 2 m/s can be generated near the center of the barn. However, in the vicinity 17 of both end walls, the air flow of 2 m/s is not formed. That is, it means that the cow in this range cannot obtain the air flow of the predetermined air volume.

The wind speed of 2 m/s is the maximum output wind speed that can be expected from the blower here, and a maximum output wind speed of 2 m/s or more may be produced by using a more powerful blower.

As described above, by providing the push side blower and the pull side blower on the opposite side walls, the air flow in the barn becomes extremely uniform. That is, it is possible to receive a predetermined wind anywhere in the barn.

In FIG. 7, a blower is arranged on the other side wall 14b in the same manner as in FIGS. 5 and 6, and on one side wall 14a, a blower is provided only at a position facing both ends of the blower arranged side by side on the side wall 14b. The result of the simulation when the is arranged is shown. As for the blower arranged on the side wall 14a, the blower is arranged in two stages as in the case of FIG.

Looking at FIG. 7, the push side blowers of 14 push are arranged one by one at a position facing both ends of the blower placed on the pull side 14 pull (because of two stages, a total of four blowers). Further, it is possible to avoid a portion where a uniform air flow does not occur near the end walls 12a and 12b. That is, by arranging one push-side blower at least at positions opposite to the blowers on both ends of the pull-side blower, it is possible to create a uniform air flow in the cowshed.

However, in FIG. 7, the maximum wind speed decreases slightly. Therefore, it is preferable that the blower on the push side 14 push is arranged in the same installation range as the blower on the pull side 14 pull as shown in FIG. However, the present invention does not exclude the aspect of FIG. 7.

That is, in the cowshed 1 according to the present invention, not only the push side blower 20a is disposed in the through hole 14ah provided in the push side 14push at a position facing each pull side blower 20b of the pull side 14pull, The push-side blower 20a is provided at a position facing the pull-side blower 20b at both ends of the side blower 20b, and at least the through hole 14ah is provided between the push-side blowers 20a. Of course, a push side blower 20a may be installed in the through hole 14ah so that a uniform air flow can be created in the cowshed 1. That is, the push side blowers 20a include the same number or less or the same number as the pull side blowers 20b.

Therefore, the layout of the blower 20 of the cowshed 1 includes the state of FIG. Referring to FIG. 8, the blower 20b on the pull side is arranged on the other side wall 14b at an interval shorter than the diameter 20d of the fan. The blowers at both ends of the placed blower 20b are referred to as blowers 20bt1 and 20bt2. On one side wall 14a, blowers 20a1 and 20a2 are arranged at positions opposite to the blowers 20bt1 and 20bt2 at both ends of the blower 20b on the other side wall 14b. A through hole 14ah3 is provided between the blower 20a1 and the blower 20a2.

In addition, the through hole 14ah3 may be provided with pillars or walls so as not to impede the uniform flow of air. For example, through holes 14ah1 and 14ah2 (see FIG. 2) for attaching the blower can be provided at positions facing the blower 20b on the pull side.

Further, the blowers 20a1 and 20a2 on the push side may be arranged at appropriate intervals. That is, in the push-side blower 20a, if the blower 20a1 and the blower 20a2 at both ends are in the positions facing the blower 20bt1 and the blower 20bt2 at both ends of the pull-side blower 20b, the same number as the pull-side blower 20b is not required. Good.

In addition, the width 19 in which the blower 20b of the pull side 14pull is installed is the length in the direction of the side walls 14a and 14b of the space in which the cow is housed. If the width 19 is longer than the width 12w of the barn 1 (the length of the end walls 12a and 12b), it may be shorter than the length 14w of the side walls 14a and 14b. That is, the blower 20b does not have to be arranged on the entire surface of the side wall 14b at an interval equal to or smaller than the diameter of the fan. This is because it is only necessary to generate a uniform air flow in the portion of the barn 1 where cows live.

Further, the blower 20a3 and the blower 20a4 may be arranged outside the blower 20a1 and the blower 20a2 arranged on the push side. This is because even if the push side blower is arranged outside the positions facing the blowers 20bt1 and 20bt2 at both ends of the pull side, the air flow is hardly affected in the range of the width 19 where the pull side blower is arranged. ..

FIG. 9 is a schematic view of a cross section of the cowshed 1 taken along a plane parallel to the end wall. The processing flow of the blowers 20a and 20b of the cowshed 1 and other means will be described with reference to this figure. The temperature sensor 22, the wireless device 24, the position sensor 26, and the wind speed sensor 28 provided in the cowshed 1 are connected to the controller 50. The controller 50 is connected to all the blowers 20a and 20b.

A plurality of these sensors may be arranged at predetermined intervals in the depth direction of the cowshed 1. This is because the cowshed 1 has a rectangular shape, and therefore it may not be possible to cover all the positions in the cowshed 1 with one sensor value. In particular, it is desirable to dispose a plurality of wind speed sensors 28. This is because, in the cowshed 1 according to the present invention, the wind speed at a predetermined location in the cowshed 1 may be stronger than that at other locations.

The controller 50 receives the signal Sh from the temperature sensor 22, the signal Si from the wireless device 24, the signal Sp from the position sensor 26, and the signal Sw from the wind speed sensor 28.

The controller 50 transmits instruction signals C20a and C20b for instructing the frequency of the inverter (the higher the output, the higher the output) to the blowers 20a and 20b. The instruction signals C20a and C20b may uniformly control all of the blowers 20a and 20b arranged on the entire surfaces of the side walls 14a and 14b, or may individually control a specific blower.

In the cowshed 1 of the present invention, since the purpose is to create a uniform air flow in the cowshed 1, a part of the blowers 20a, 20b arranged in parallel with the side walls 14a, 14b is intermittently driven, or If there is a case where a uniform air flow can be created by partially increasing or decreasing the wind speed, such control is not excluded.

Further, the controller 50 is also connected to a disconnection switch 36 provided on a power supply line that supplies power to the blowers 20a and 20b. The controller 50 can cut off the power supply by transmitting the instruction signal Cd.

The controller 50 is also connected to the input/output device 52. The input/output device 52 has a display screen 52d and an input means 52k such as a keyboard. It is mainly used by an operator to give an instruction to the controller 50 or to display each status in order to confirm the current state of the barn 1. The controller 50 transmits a signal Sd to and from the input/output device 52, passes data and the like, receives an instruction signal Cc, and follows an instruction from an operator.

The input/output device 52 may be equipped with an alarm such as a warning light 54. The alarm may be a warning buzzer other than the warning light 54.

In the cowshed 1 according to the present invention, the individual information terminal 30 is attached to the cow in the cowshed (stall) 1. The individual information terminal 30 can inspect the individual state of each cow and transmit it as individual information. Here, the individual information includes vital signs such as body temperature and blood stress substance concentration and position information. The blood stress substance may include cortisol. Cortisol is known as a hormone secreted when livestock is under stress.

The individual information terminal 30 inspects these items at regular intervals or when receiving an instruction, and records the results. In addition, when there is an inquiry from the communication device (radio device 24), the latest data may be promptly transmitted. The communication device communicates with the individual information terminal 30 and collects individual information from each individual (cow). The method of communication with each individual information terminal 30 is not particularly limited.

A method of giving a unique identification ID to each individual information terminal 30 and designating each individual information terminal 30 at a specific frequency to acquire individual information can be suitably used. When each individual information terminal 30 receives this identification ID, it sends the latest individual information. In addition, all the individual information terminals 30 perform the individual state inspection when receiving the signal indicating that the individual state inspection is performed. The signal indicating that the individual state is to be inspected may be common to all individual information terminals 30.

When such a method is used, it is possible to communicate with only one individual at a time. Therefore, in order to obtain individual information from all individuals, it is necessary to sequentially communicate with individual individual information terminals 30. However, these pieces of individual information have relatively low urgency, and it suffices that the individual information can be acquired every several minutes to a dozen minutes.

The position sensor 26 identifies where the individual wearing the individual information terminal 30 is located in the barn 1. A plurality of position sensors 26 may be arranged in the barn 1. By arranging a plurality of position sensors 26 and measuring the received radio wave intensity for each position sensor 26, the whereabouts of the individual can be accurately known.

As the radio wave from the individual, the radio wave when each individual information terminal 30 communicates with the wireless device 24 may be used. If the position sensor 26 specifies the position of the individual by using the communication radio wave between each individual information terminal 30 and the wireless device 24, the position information Bp of the individual can be obtained at the same time along with the body temperature and the blood stress substance concentration. .. The position sensor 26 is not limited to the one using a wireless tag, and may be a method using infrared rays or a camera.

In addition to the body temperature and the blood stress substance concentration, the position information Bp of the individual may also be called individual information. The position sensor 26 and the wireless device 24 are communication devices. Therefore, it can be said that the communication device receives the individual information.

The cowshed (stall) 1 according to the present invention receives the individual information from each individual information terminal 30 using a communication device, and controls the rotation speed of the blowers 20a and 20b according to the state of each individual.

<Control flow>
The operation of the cowshed (stall) 1 according to the present invention will be described below. The operation of the cowshed (stall) 1 may be called the processing flow of the controller 50. FIG. 10 shows a main flow of the controller 50. When the process is started (step S100), initial setting is performed (step S101), and the end determination is made (step S102). Initialization may include resetting variables used in subsequent processing. The termination determination may be performed by a stop command to the controller 50 or an emergency stop interrupt signal. If the process is to be ended (Y branch of step S102), the end process is performed (step S148), and the process is ended (step S150). The termination process may include a process of shutting off the electric power of the blowers 20a and 20b.

When the process is not completed (N branch in step S102), the individual information from all the heads belonging to the barn 1 is acquired (step S104). Here, the individual information includes body temperature Bt, blood stress substance concentration Bs, and position information Bp. After the individual information is obtained from all the heads, it is determined whether or not the individual information includes stress information (step S106). The stress information is information on the blood stress substance concentration Bs.

If the stress information exists (Y branch of step S106), stress processing is performed (step S108). The stress processing determines the number of cows that can be determined to be stressed from the individual information, and controls the rotation speed of the blowers 20a and 20b according to the number. At this time, the house temperature Sh may be used as a determination factor. Further, a cow that can be judged to be stressed by the stress treatment in step S108 may be identified as an abnormal individual As. When the stress process is completed, the process returns to the main (it moves to the next step S110).

When the stress information does not exist (N branch of step S106), it is determined whether the body temperature information exists (step S110). If body temperature information exists (Y branch of step S110), body temperature processing (step S112) is performed. Here, the rotation speeds of the blowers 20a and 20b are controlled based on the average value of the body temperature of each individual. At this time, a cow whose body temperature is higher than a predetermined value may be identified as an abnormal individual At. When the body temperature process is completed, the process returns to the main (moves to the next step S114).

If the body temperature information does not exist (N branch of step S110), the presence or absence of the position information Bp is determined (step S114). If the position information Bp is included in the individual information (Y branch of step S114), position processing (step S116) is performed. Here, the rotation speeds of the blowers 20a and 20b are controlled based on the positioning of each individual in the cowshed 1. Here, information on the individual identified as the abnormal individual by the stress process (step S108) and the body temperature process (step S112) may be referred to. When the position processing is completed, the process returns to the main and returns to the end determination (step S102).

As described above, in the cowshed 1 according to the present invention, the rotation speeds of the blowers 20a and 20b are controlled based on the body temperature Bt, the blood stress substance concentration Bs, the house temperature Sh, and the individual positional information Bp. As shown in steps S106, S110, and S114, if the acquired individual information does not include the body temperature Bt, the blood stress substance concentration Bs, and the position information Bp, the respective processes are skipped. In other words, the stress process (step S108), the body temperature process (step S112), and the position process (step S116) may be individually performed.

<Individual information acquisition processing>
Next, the individual information acquisition process will be described in detail. FIG. 11 shows the flow. When the individual information acquisition process is started (step S200), initial setting (step S202) is performed. The initial setting may include a process of sending a signal indicating acquisition of individual information to all individual information terminals 30 as a simultaneous signal. It is assumed that there is a variable N for processing here, and the variable N is also initialized (=1). Further, a collection of individual information from each individual is referred to as an individual information collection GI. The individual information collection GI is also initialized.

Next, the end determination is performed (step S204). Here, the termination determination is determined by whether or not the individual information is acquired from all the individual information terminals 30. Specifically, it may be determined whether or not the designated individual information terminal 30 is the last one. Here, assuming that the total number of individuals is M, the determination is made by whether or not the variable N exceeds M.

If the process is to end (Y branch of step S204), the end process (step S248) is performed and the process ends (step S250). The ending process may include a process of recording the acquired individual information collection GI.

If not completed (N branch in step S204), the Nth individual information terminal 30 is designated and received (step S206). Specifying includes transmitting the identification ID of the Nth individual information terminal 30. When the individual information terminal 30 receives the identification ID, the individual information terminal 30 transmits the measured individual information.

If there is the position sensor 26, the position information Bp may be acquired by a radio wave that transmits individual information. The individual information I(N) includes body temperature Bt, blood stress substance concentration Bs, and position information Bp. Note that some of these pieces of information may be missing. The received individual information I(N) is recorded in the individual information collection GI. Further, the individual information terminal 30 may use GPS to acquire the position information.

When the reception is completed, the variable N is incremented (step S208). Then, the process returns to the end determination (step S204). It should be noted that the house temperature Sh may be measured from the temperature sensor 22 in the termination process.

<Stress processing>
Next, the stress processing will be described in detail. FIG. 12 shows the flow. When the stress processing is started (step S300), the blood stress substance concentration Bs is compared with the threshold value Tss from the individual information in the individual information collection GI, and the stress abnormality is found in the individual having the blood stress substance concentration Bs exceeding the threshold value Tss The individual As is identified (step S302). This process is recorded in the individual information collection GI.

Next, it is determined whether or not the blood stress substance concentration Bs of the individuals corresponding to (100×Q)% of all the individuals exceeds the threshold value Tss (step S304). In the drawing showing the blood stress substance concentration Bs of all individuals as ^"A Bs". Thus, blood stress substance concentration (100 × Q)% of individuals of all individuals are represented as ^"A BSQ". For example, (100×Q)% is preferably 60%. It should be noted that it is desirable that this Q be a numerical value that can be changed by inputting from the input/output device 52.

When the blood stress substance concentration Bs of (100×Q)% of all individuals exceeds the threshold Tss (Y branch of step S304), it is further determined whether the house temperature Sh exceeds the threshold Th. (Step S314). When the house temperature Sh exceeds the threshold value Th (Y branch of step S314), the rotation speed of the blowers 20a and 20b is increased (step S316), and the process returns to the main (step S350).

That is, when the blood stress substance concentration Bs of the individuals corresponding to (100×Q)% of all the individuals exceeds the predetermined threshold value Tss and the house temperature Sh exceeds the predetermined threshold value Th, the amount of air sent to the livestock house is increased. At this time, the flag F1 is set (=1). This indicates that the rotational speeds of the blowers 20a and 20b were controlled by the stress processing. Note that the flag AF is reset (=0). This flag AF is a flag used in step S320.

Returning to step S314, if the in-house temperature Sh does not exceed the threshold Th (N branch in step S314), (100×Q)% of all the individuals feel stress, but the in-house temperature Sh Indicates the case not high. This indicates that the stress substance concentration Bs in blood is increased by stress other than heat. In this case, stress processing other than heat is performed (step S320).

FIG. 13 shows the details of step S320. A step S320 displays or sounds an alarm when stress other than heat continues for a certain period of time or more, and displays the position of an individual whose blood stress substance concentration Bs exceeds a predetermined threshold value Tss. When step S320 starts, it is first determined whether or not the flag AF is set (=1). This flag AF is a flag for determining whether or not this process continues for a predetermined time.

If the flag AF is not set (=1) (N branch of step S322), it is determined that this process is started for the first time, the flag AF is set (=1), and the current time Tm is substituted for the variable Tn ( Step S324). Here, Tn will record the time when the process first entered.

When the flag AF is set (=1) (Y branch of step S322) or the flow of the process via step S324, ΔT is calculated by Tm-Tn (step S326). ΔT represents the elapsed time from the time when this processing (processing of stress other than heat) was started for the first time. Next, it is determined whether or not this ΔT exceeds the threshold value Ttt (step S328). That is, when the Ttt time has elapsed since the process in which stress other than heat was felt was first entered (Y branch in step S328), an alarm display or the like is performed.

Since the flag AF is reset (=0) in step S316 of FIG. 12, the current time Tm is always input to the variable Tn unless stress processing other than heat is repeatedly performed (step S320). That is, even if the stress process other than heat is performed (step S320), if the indoor temperature Sh exceeds the threshold Th in step S314 and the process proceeds to step S316, the variable Tn that is the reference for calculating ΔT is reset. become.

If the elapsed time ΔT after entering the process of stress other than heat (step S320) is not larger than the threshold value Ttt (N branch of step S328), the process proceeds to step S306 of the stress process (step S345). If the elapsed time ΔT is longer than the threshold value Ttt (Y branch of step S328), the process proceeds to alarm processing (step S330 and thereafter).

In the alarm processing, first, the flag AF is reset (=0) (step S330). Next, an alarm is displayed (step S332). The alarm display may sound an alarm or rotate the warning light 54. Further, the position of the individual whose blood stress substance concentration Bs exceeds a predetermined threshold value Tss is displayed on the display screen 52d (step S334). If you are stressed due to a cause other than heat, it is intended to be checked directly by the keeper.

In addition, in FIG. 13, step S332 and step S334 are looped. To solve this, reset the system itself. However, after displaying the individual position (step S334), the process may exit step S320 (to step S345). Moreover, only one of the warning display, the warning sound, and the individual position display may be displayed.

Referring back to FIG. If the blood stress substance concentration Bs of all individuals (100×Q)% does not exceed the threshold Tss (N branch of step S304), or if the house temperature Sh does not exceed the threshold Th (step S304). Next, the flow from the N branch of S314) determines whether or not the blowers 20a and 20b are rotating (step S306). If it is rotating (Y branch of step S306), it is determined whether another flag is set (step S308). The other flags are flags that are set when the rotation speeds of the blowers 20a and 20b are controlled by the body temperature process (flag F2) and the position process (flag F3).

If no other flag is set (Y branch of step S308), the number of rotations of the blowers 20a and 20b is reduced to such an extent that the required ventilation amount can be secured (step S310). Then, the flag F1 is set to zero (step S312), and the process returns to the main (step S350). If the blood stress substance concentration Bs of all individuals (100×Q)% does not exceed the threshold Tss (N branch of step S304), or if the house temperature Sh does not exceed the threshold Th (step S304). In the N branch of S314), it was not decided to increase the rotation speeds of the blowers 20a and 20b in the stress treatment, so the rotation speeds of the blowers 20a and 20b are reduced to the extent that the required ventilation amount can be secured. is there.

If another flag is set (N branch in step S308), the flag F1 is set to zero (step S312) and the process returns to the main (step S350). This is because the control of the rotation speed of the blowers 20a and 20b is left to other processing. As described above, it is possible to determine which of stress processing, body temperature processing, and position processing is the main control unit for controlling the rotation of the blowers 20a and 20b through the flag states.

Returning to step S306, if the blowers 20a and 20b are not rotating (N branch of step S306), the process directly returns to the main (step S350). The blowers 20a and 20b are not rotated by the stress treatment, and since the blowers 20a and 20b were originally not rotated, the process returns to the main state as it is.

<Body temperature treatment>
Next, the body temperature processing will be described in detail. FIG. 14 shows the flow. When the body temperature processing is started (step S400), the body temperature Bt of each individual in the individual information collection GI is compared with the threshold value Tt, and an individual having a body temperature Bt higher than the threshold value Tt is identified as an abnormal body temperature At (step S402). ). This process is recorded in the individual information collection GI. Next, the average value (Btm) of the body temperature Bt of each individual is calculated (step S404).

Next, it is determined whether the average value Btm of the body temperature Bt is higher than the threshold value Tt (step S406). When the average value Btm of the body temperature Bt is higher than the threshold value Tt (Y branch of step S406), the number of rotations of the blowers 20a and 20b is increased and the flag F2 is set (=1) (step S408). That is, here, the wind is sent when the average value Btm of the body temperature Bt of all individuals is higher than the predetermined threshold value Tt.

When the average value Btm of the body temperature Bt is not higher than the threshold value Tt (N branch of step S406), it is determined whether the blowers 20a and 20b are already rotating (step S410). When the blowers 20a and 20b are already rotating (Y branch of step S410), it is determined whether another flag is set (step S412).

If no other flag is set (Y branch of step S412), the rotation speeds of the blowers 20a and 20b are lowered until the minimum ventilation is secured (step S414). That is, by passing through this body temperature treatment, the blowers 20a and 20b are operated to the extent that the minimum ventilation volume can be ensured.

When another flag is set (N branch in step S412), the flag F2 is set to zero (step S416), and the process returns to the main (step S450). This means that another process controls the blowers 20a and 20b, and that the body temperature process does not control the blowers 20a and 20b.

If the blowers 20a and 20b are not rotating (N branch of step S410), the process directly returns to the main (step S450). Also, when the rotation speeds of the blowers 20a and 20b are changed in step S408 and step S414, the process returns to the main (step S450).

<Position processing>
Next, the position processing will be described in detail. FIG. 15 shows the flow. When the position processing is disclosed (step S500), the individual information collection GI is checked to determine whether or not at least one of the blood stress substance concentration Bs data and the body temperature Bt data is measured (step S502). ). If none of the data has been measured (N branch of step S502), the process returns to the main (step S550). This is because the positional information Bp alone is not the basis for controlling the blowers 20a and 20b. That is, the position information Bp controls the blowers 20a and 20b using at least one piece of vital information of each individual.

When either data is measured (Y branch of step S502), the abnormal stress individual As or the abnormal temperature body At in the individual information collection GI (these are collectively referred to as “abnormal individual” hereinafter) is selected. Yes (step S504). In the position processing, the rotation speeds of the blowers 20a and 20b are controlled based on the location of the abnormal individual.

Next, the distance between the selected individuals is obtained from the position information Bp of the selected individuals (step S506). FIG. 16 shows a plan view of the barn. It is assumed that there are eight pull side blowers and four push side blowers. Further, it is assumed that the abnormal individual selected in step S504 is at the position indicated by a black circle in FIG. White circles are cows that are not abnormal animals.

The number assigned to each is the number corresponding to the individual ID. There are ten cows now. The position information Bp can be represented as position coordinates on the plan view of the livestock shed in this way. In FIG. 16, 1, 3, 6, 8, and 10 cows are identified as abnormal individuals. That is, either the body temperature Bt is high or the blood stress substance concentration Bs is high.

The distance between each abnormal individual means obtaining a mathematical distance from the position coordinates of each abnormal individual. For example, if the coordinates of the first individual's barn on the plan view are (x1, y1) and the coordinates of the sixth individual are (x6, y6), the distance d is (1 ) Is calculated by the formula.

Here, the coordinate axes may be set arbitrarily. For example, in FIG. 16, the short side of the barn is the X axis and the long side is the Y axis.

When the distances d between all the abnormal individuals are obtained, the number D(k) of abnormal individuals within a range shorter than the predetermined distance Td from each abnormal individual is checked (step S508). k is a number corresponding to the identification ID of the cow wearing the individual information terminal 30. Here, it is the above number. Since only abnormal individuals are selected (step S504), k is not necessarily a continuous number. In FIG. 16, 5 heads of 1, 3, 6, 8, and 10 are targeted. D(k) is the number of abnormal individuals within the distance Td from the kth cow, in which the kth cow is identified as an abnormal individual from all the cows.

In FIG. 16, if the predetermined distance Td is a circle indicated by a dotted line, D(1) is another abnormal individual within the distance Td from the first individual, so the sixth and eighth are Equivalent to. That is, D(1)=2. On the other hand, there are no other abnormal individuals within the distance Td at the 10th and 3rd positions.

Then, it is determined whether the number D(k) is n or more (step S510). When there is a place where there are n or more heads (Y branch in step S510), it means that n or more heads of abnormal individuals have gathered within the distance Td. This indicates that there are places where individuals who are feeling stress or individuals with high body temperature Bt are gathered.

Therefore, in such a case, the rotation speed of the blower closest to the individual is increased and the flag F3 is set (=1) (step S512). The closest blower corresponds to the blower 20b2 in FIG. The number of rotations of not only this blower but also the blowers around it may be increased at the same time. Further, even if the blower is already operating so as to generate uniform wind, the blower 20b2 may blow more air. This process is a process relating to the blood stress substance concentration Bs or the body temperature Bt, and controls the rotation speed of the blower depending on the gathering of abnormal individuals even if the rotation speed of the blowers 20a and 20b is not increased. is there.

If there is no place where abnormal individuals are gathered (N branch in step S510), it is determined whether the blowers 20a and 20b are already rotating (step S514).

When the blower is rotating (Y branch of step S514), it is determined whether another flag is set (step S516). If no other flag is set (Y branch of step S516), the rotational speeds of the blowers 20a and 20b are lowered until the minimum ventilation is secured (step S518). Then, the flag F3 is reset (=0) to return to the main (step S550).

If another flag is set (N branch in step S516), the flag F3 is set to zero (step S520), and the process returns to the main (step S550). This means that another process controls the blowers 20a and 20b, and that the body temperature process does not control the blowers 20a and 20b.

As described above, since the cowshed according to the present invention controls the rotation speed of the blower based on the individual information of each individual, it is possible to reduce the stress of the cow being bred. Particularly, it can be said that the milking amount can be efficiently maintained because the heat treatment can be efficiently performed on the individuals or the populations that are considered to be under stress.

INDUSTRIAL APPLICABILITY The present invention can be suitably applied not only to a barn for raising dairy cows, but also to all livestock housing for livestock such as beef cattle, chickens and pigs.

1 Cattle 10 Floor 12a, 12b End wall 12w End wall length 13a, 13b Open/close door 14a, 14b Side wall 14ah Through hole 14bh Through hole 14ah (14ah1, 14ah2, 14ah3) Through hole 14at1, 14at2 (side wall) 14w Side wall length 14 push Push side 14 pull Pull side 15a, 15b (Through hole) spacing 16 Roof 16h Eave height 17 Near both end walls 18 Air flow 19 (Pull side blower is installed in parallel) Width
20a, 20b Blower 20f Front of blower 20r Rear of blower 20d Fan diameter 20w Width of blower 22 Temperature sensor 24 Radio 26 Position sensor 28 Wind speed sensor 30 Individual information terminal 36 Disconnection switch 50 Controller 52 Input Output device 52d Display screen 52k Input means 54 Warning light

Claims (1)

A rectangular floor,
A pair of side walls provided on the long side of the floor,
A pair of end walls provided on the short side of the floor,
A roof disposed above the side wall and the end wall,
A pull side blower is installed in parallel on the first side wall of the pair of side walls,
A push side blower is disposed on the second side wall of the pair of side walls,
A temperature sensor that measures the temperature inside the barn,
A communication device for receiving an individual signal from an individual information terminal attached to a livestock belonging to the livestock house,
If there is position information in the individual signal, stress information and body temperature information does not exist,
Barn, characterized in that it comprises a controller for controlling the rotational speed of the blower based on the positioning of livestock from the barn temperature before Symbol position location information.