JP2697806B2 - Dynamic measuring device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a weighing platform, receiving means for receiving individual identification information transmitted from transmitting means attached to the weighing platform, and a weighing platform when the weighing platform passes on the weighing platform. Storage means for sequentially taking and storing the time-series data of the weighing values, identifying a local maximum value from the time-series data, and setting the time-series data to a section in which a plurality of local maximum values within a predetermined range are continuous as the same data section; There are provided a data section setting means for dividing, a valid data section discriminating means for discriminating a valid data section from the data section, and a calculating means for calculating a static weight of the weighing target from the time-series data in the valid data section. Dynamic weighing device.

[0002]

2. Description of the Related Art As such a dynamic measuring device, there is, for example, a bovine measuring device. Such a weighing device receives the individual identification information of a cow as a weighing target by the receiving means, and temporarily captures and stores time-series data of weighing values obtained from the weighing platform when the cow walks on the weighing platform. Memorize in the means,
The time-series data is sectioned by the data section setting means, the effective data section is determined by the effective data section setting means as a valid data section, and the static weight of the cow is calculated from the time-series data in the effective data section by the calculation means. Is calculated, and the calculated static weight is the static weight of the cow identified from the individual identification information received by the receiving means.

In such a weighing apparatus, when a plurality of cows are continuously measured, the stationary weight of the cow is determined from time series data of weighing values obtained from the weighing platform when only one cow is on the weighing platform. It needs to be calculated. Therefore, from the data section obtained by dividing the time-series data by the data section setting means, the data section when only one cow is on the weighing platform is determined as the valid data section by the valid data section determining means, and the calculating means The stationary weight of the cow is calculated from the time series data in the effective data section.

In order to determine the above-mentioned valid data section by the valid data section discriminating means, conventionally, detecting means for detecting the passage of a cow by an optical sensor or the like are provided at the entrance and the exit of the weighing platform, and the detection information of these detecting means is provided. , The valid data section is determined. That is, for example, from the time when the detection means provided at the entrance changes from the state where the passage of the cow is detected to the state where the detection is not performed, from the state where the detection means provided at the exit detects the passage of the cow from the state where it does not detect the passage. The period was determined to be a period in which only one cow was on the weighing platform, and the data section during that period was determined to be a valid data section.

[0005]

However, in the above-mentioned conventional weighing device, for example, when two cows pass in a state where the detection means provided at the entrance is installed in a continuous state,
Since an erroneous detection is made that a head cow has passed and the valid data section is determined as described above, the valid data section cannot be accurately determined. Therefore, the conventional weighing device has a problem in that, for example, when two cows pass through the entrance of the weighing platform in a state of being connected in series as described above, the static weight of the cow may not be accurately measured. Was.

The present invention has been made in view of the above circumstances, and an object of the present invention is to always accurately determine a valid data section regardless of the state in which a weighing object passes on a weighing platform. It is an object of the present invention to provide a dynamic weighing device capable of accurately measuring the static weight of a weighing object.

[0007]

A feature of the dynamic weighing apparatus according to the present invention is that the receiving means transmits the signal from the transmitting means when the whole of the object to be weighed is at the entrance side on the weighing platform. Provided to receive individual identification information,
Detecting means for detecting the weighing object in the middle of passing the exit of the weighing platform is provided, the effective data section determining means,
Based on the reception information of the receiving means and the detection information of the detection means, the data section is configured to exclude the data section in which a plurality of weighing targets are located on the weighing platform and to determine the valid data section. It is in the point.

[0008]

According to the above-mentioned characteristic configuration, it is possible to determine the state where the whole of the object to be weighed is at the entrance side on the weighing table based on the information received by the receiving means, and based on the detection information of the detecting means. It can be determined that there is a weighing object that is passing through the exit of the table. Further, even when two weighing objects are successively passed on the weighing platform, the receiving means receives the individual identification information transmitted from each of the weighing object transmitting means individually. Based on the information, it is possible to determine a state in which the two weighing objects are consecutively passing on the weighing platform. Then, the valid data section determining means determines a state in which the plurality of weighing targets are located on the weighing platform based on the reception information of the receiving means and the detection information of the detecting means, and determines a plurality of weighing targets on the weighing platform from the data section. The valid data section is determined excluding the data section in which the measurement target is located.

[0009]

As described above, according to the present invention, regardless of the state in which the weighing object passes on the weighing platform, the data section in which a plurality of weighing objects are located on the weighing platform can be excluded from the data section. , The valid data section can always be determined accurately,
The static weight of the object to be measured can be accurately measured.

[0010]

Next, an embodiment in which the present invention is applied to a cow weighing device will be described with reference to the drawings.

First, the overall configuration of the weighing device will be described with reference to FIGS.

The weighing device according to the present embodiment uses the time series data of the weighing values obtained from the weighing platform 2 when the cow to be weighed walks on the weighing platform 2 and calculates the stationary weight of the cow (hereinafter, referred to as the “weight”). Simply called weight). Weighing platform 2
A fence 1 is provided on both sides of the passage before and after that, and an entrance gate 3 opened and closed by an actuator 5 is provided at an entrance of the weighing platform 2, and an exit gate 4 is provided at an exit of the weighing platform 2. It is. A terminal device 6 is provided outside the weighing platform 2.
Is provided.

As shown in FIG. 1, the terminal device 6 has a key panel 6a for giving instructions to start and stop weighing, and a digital display for displaying and outputting weighing results (bovine individual number and its weight). And a printer 6c for printing out the measurement results. Also, in order to calculate the weight of the cow based on the load data from the weighing platform 2 and to perform the communication with the external information device, etc., the weighing processing unit H, and to introduce only one cow to the weighing platform 2 as described later. An actuator control unit S for controlling the actuator 5 so as to open and close the entrance gate 3 is also provided inside the terminal device 6.

As shown in FIG. 1, a transmitting means T for transmitting individual identification information (individual number) of a cow is attached to the ankle of the left rear leg of the cow. The transmitting means T includes a memory for storing an individual number and a bidirectional RF wireless communication means.
Then, the transmitting means T performs wireless communication with the weighing processing section H via a receiving means described later, and gives the individual number of the cow to be weighed to the weighing processing section H. The operator can manually input the individual number using the key panel 6a.

The weighing table 2 is, as shown in a plan view in FIG.
It comprises a base plate 2a made of FRP attached to an iron frame and four load cells 2b arranged at four corners thereof. Base plate 2
The load applied to a is detected as the total value of the outputs of these four load cells 2b. The outputs of the four load cells 2b are supplied to the measurement processing unit H as analog voltages, and signal processing is performed by the measurement processing unit H.

An antenna 7 as a receiving means for receiving the individual number transmitted from the transmitting means T when the whole cow is on the entrance side on the weighing platform 2 is provided at the entrance side of the weighing platform 2. It is provided. The antenna 7 is a flat rectangular antenna wound in a loop shape, the width of which is slightly smaller than the width of the mounting surface of the weighing platform 2, and the length of the whole cow in consideration of the size of the cow. Is set to be able to receive the individual number transmitted from the transmitting means T in a state where is located at the entrance side on the weighing platform 2. The directivity of the antenna 7 is set so as to be in a direction perpendicular to the mounting surface of the weighing platform 2, that is, in a vertical direction. It is attached to the cow's ankle to be strong.

Specifically, the entrance gate 3 is symmetrically provided at a position corresponding to the entrance of the weighing table 2 on the fences 1 and 1 on both sides, and is rotatable about a pair of left and right vertical axes. It comprises a rotating shaft 3a, a pair of left and right doors 3b integrally attached to each of the rotating shafts 3a, and a pair of columnar bodies 3c erected above the respective doors 3b. The pair of cylinders 3c is provided for opening and closing the entrance gate 3 by the actuator 5 pushing the cylinders 3c.

More specifically, the exit gates 4 are symmetrically erected at locations corresponding to the exits of the weighing platform 2 on the fences 1 and 1 on both sides, and are rotatable about a pair of left and right vertical axes. It comprises a rotating shaft 4a and a pair of left and right doors 4b integrally attached to the rotating shafts 4a.

The entrance gate 3 and the exit gate 4 have a structure in which a pair of left and right doors 3b, 4b are both swingably opened and closed in a double-opening manner, and are respectively attached to the rotating shafts 3a, 4a. It is constantly urged in the closing direction by a spring (not shown).

At the entrance gate 3, in the fully closed state where both the left and right doors 3b intersect with the passage at a crossing angle of 90 °, both ends of the pair of left and right doors 3b are overlapped with each other so that the walking animal can be moved. It blocks forward vision.
On the other hand, in the exit gate 4, in a fully closed state in which both the pair of left and right doors 4b intersect with the passage at an intersection angle of 90 °, both ends of the pair of left and right doors 4b are slightly separated from each other. It keeps the forward view of the walking animal.

A first sensor 8 for detecting a cow passing through the entrance of the weighing platform 2 is provided at a position corresponding to the entrance of the weighing platform 2 on each of the fences 1 and 1 on both sides. Specifically, the first sensor 8 is an optical sensor composed of a light receiver 8B and a light emitter 8A, and the light emitter 8A and the light receiver 8B are respectively connected to the fences 1, 1 on both sides, and the light sensor 8A is The emitted light is provided so as to be received by the light receiver 8B across the passage. That is, when the cow blocks the light emitted from the light emitting device 8A and the light receiving device 8B enters the non-light receiving state, the state where the cow is present is detected. Exit gate 4
Is provided with a second sensor 9 as detecting means for detecting a cow passing through the exit gate 4 of the weighing platform 2. Specifically, the second sensor 9 is a proximity sensor, and the cow is the door 4.
b when pushing through the exit gate 4
It is provided so as to detect a state where b is open beyond a set value.

The first sensor 8 detects the state of the cow on the weighing platform 2 based on the detection of the state of the cow from the state of the cow, and the second sensor 9 sets the door 4b. Based on the detection of the state where the cow is open by the value or more, it is detected that the cow is in the middle of passing through the exit gate 4 and the second sensor 9 changes from the state where the state is detected to the state where the cow is not detected. Thus, it is configured to detect that a cow has passed through the exit gate 4.

Next, a specific configuration of the entrance gate 3 and the actuator 5 will be described with reference to FIGS.

As shown in FIG. 2, a beam 1C is attached to the fences 1, 1 on both sides of the weighing platform 2 at a position corresponding to the upper portion of the entrance of the weighing platform 2 along the width direction of the weighing platform 2. It is erected for it. The actuator 5 includes an electric motor 51 attached to the beam 1C and a rotating shaft 51 of the electric motor 51.
A, and a link 52 fixed to A
Link 53 pivotally connected via 2A and its link 5
The link 54 pivotally connected to the beam 3 via a shaft 53A and pivotally connected to the beam 1C via a shaft 54A, and the link 54 extends along the width direction of the weighing table 2. And a pressing member 55 fixed thereto.

The link 54 is, specifically, a shaft 53A.
A rod-shaped body 54a pivotally connected to the link 53 via the shaft 53A and pivotally connected to the beam 1C via the shaft 54A;
A rod-like body 54c pivotally connected to the rod-like body 54a via a shaft 54b, and the rod-like body 54c is allowed to bend at a shaft 54b in the direction of arrow a in FIG.
It comprises a regulating body 54d for regulating bending in the direction, and a spring 54e attached so as to urge the rod-shaped body 54c in a direction to press the regulating body 54d. The pushing member 55 is fixed to the rod 54c.

That is, the actuator 5 includes the electric motor 5
1 is rotated so that the link 54 can swing about the shaft 54A as a rotation axis, and the actuator control unit S moves the pushing member 55 to the X position and the Y position in FIG. , The electric motor 51 can be stopped. When the pushing member 55 is located at the X position, the link 5
4 is restricted from bending in the direction of arrow b, the pair of cylindrical members 3c erected above the doors 3b are pushed by the pushing members 55, and the entrance gate 3 is fully closed. It is designed to open halfway between full opening.

Accordingly, by operating the actuator 5 so that the pushing member 55 is located at the X position, the entrance gate 3 is opened halfway between the fully closed state and the fully opened state. This state is an approach permitting state in which a cow located in front of the entrance gate 3 is given a forward view to stimulate the cow to move forward and enter the weighing platform 2. Also, the pushing member 55
When the actuator 5 is operated so as to be positioned at the Y position, the entrance gate 3 is fully closed by the spring in the closing direction. This state is an entry blocking state in which the forward view of a succeeding cow located in front of the entrance gate 3 is obstructed, thereby reducing the willingness of the cow to move forward and preventing the cow from entering the weighing platform 2.

Incidentally, for some reason, the pushing member 55 is moved to the Y position.
When the entrance gate 3 is opened in the opposite direction in the state of being located at the position, the cylindrical body 3c is prevented from hitting the pushing member 55, so that there is no problem in the operation of the actuator 5. If, for some reason, the entrance gate 3 is fully closed and the pushing member 55 is located at the X position, the pushing member 55 is forcibly moved to the Y position in this state. In this case, but in this case,
Since the pushing member 55 hits the cylindrical body 3c in a state where the link 54 is allowed to bend in the direction of arrow a in FIG.
The pushing member 55 can be positioned at the Y position by moving over the cylindrical body 3c.

As shown in FIG. 7, the actuator control section S reciprocates the pushing member 55 between the X position and the Y position based on the detection information of the first sensor 8 and the second sensor 9 respectively. The actuator 5 is controlled so as to be positioned.

Further, as shown in FIG.
It comprises a data input means 10 and an arithmetic processing means 11. The data input means 10 includes an amplifier 10a for amplifying a voltage signal as a weighing value from the weighing platform 2, a low-pass filter 10b for smoothing the output, and an A / D converter for quantizing the smoothed voltage signal at a predetermined sampling time. The container 10c is provided.
Time-series data of weighing values (hereinafter referred to as weighing data) output from the A / D converter 10c is input to the arithmetic processing unit 11.

The arithmetic processing means 11 is constituted by using a microcomputer, and a storage means 11a for sequentially taking in and storing weighing data, identifying a maximum value from the weighing data, and a plurality of local maximum values within a predetermined range continue. Data section setting means 11b for dividing the weighing data into sections having the same data section, valid data section determining means 11c for determining a valid data section from the data section, and calculation for calculating the weight of the cow from the weighing data in the valid data section. It has means 11d.

The metering section H is provided with a serial interface 12 and an input / output circuit 13. The serial interface 12 communicates with an external information device DE (computer) that manages history data and total data of individual cows, communicates with the transmitting means T via the antenna 7 and its RF circuit 14, and It manages communication with the two sensors 9. The input / output circuit 13 manages an interface with the key panel 6a, the digital display 6b, and the printer 6c.

The communication between the weighing section H (the arithmetic processing means 11) and the transmitting means T attached to the cow is performed as follows. First, an RF wave including a response request signal is output from the antenna 7. When the transmitting means T attached to the cow approaches the antenna 7, power is supplied by this RF radio wave and the cow becomes active. Then, in response to the response request signal, the stored information, that is, the individual number of the cow to which the transmitting means T is attached is transmitted as RF radio waves. This signal is received by the antenna 7 and transmitted to the arithmetic processing unit 11 via the RF circuit 14 and the serial interface 12.

The measurement processing section H (arithmetic processing means 11)
And communication with the second sensor 9 are performed as follows. Second
The output voltage signal from the sensor 9 is configured to increase by detecting a state where the door body 4b is opened by a set value or more. The signal from the second sensor 9 is converted into an ON / OFF signal by the interface 12 and
1 is transmitted.

Next, based on FIG. 8, the actuator control unit S controls the actuator 5 based on the detection information of each of the first sensor 8 and the second sensor 9 to bring the entrance gate 3 into the above-mentioned entrance allowable state. A description will be given of the operation over time for switching to the above-mentioned approach-preventing state.

As shown in FIG. 8A, the preceding cow A passes through the exit gate 4, the exit gate 4 is fully closed, and the second sensor 9 passes the cow A through the exit gate 4. The actuator control unit S
Switches the entrance gate 3 to the entry allowable state (by operating the actuator 5 so that the pushing member 55 is positioned at the X position, the entrance gate 3 is opened halfway between the fully closed state and the fully opened state. Do). Accordingly, the front view of the cow B located in front of the entrance gate 3 is opened, and the cow B enters the weighing platform 2 with a desire to move forward.

At the time of entry, the entrance gate 3, which is in the state between the fully closed state and the fully opened state, is allowed to open and rotate. The weighing platform 2 can be entered. Then, as shown in FIG. 8 (b), based on the fact that the first sensor 8 detects the state where the cow is on the weighing platform 2, the actuator control unit S switches the entrance gate 3 to the above-mentioned entry blocking state (push). By operating the actuator 5 so that the moving member 55 is positioned at the Y position, the entrance gate 3 is fully closed by the spring in the closing direction. In this state, as shown in FIG. 8C, when the cow B passes through the entrance gate 3 and enters the weighing platform 2, the entrance gate 3 is closed and rotated by the urging in the closing direction by the spring, and the whole is rotated. It is closed.

Subsequently, as shown in FIG. 8D, the cow B that has reached the position before the exit gate 4 keeps the front view of the cow B even when the exit gate 4 is fully closed.
Is motivated to move forward and tries to pass the exit gate 4. Also, the cow C, which has reached the entrance gate 3 before the preceding cow B passes through the exit gate 4, has the entrance gate 3 fully closed and obstructs the front view of the cow C. Is motivated to move forward and stops just before entrance gate 3.

As described above, by switching the entrance gate 3 between the entry permitting state and the entry blocking state,
Only one cow is to be led to the weighing platform 2. However, when two cows continue to reach the front of the entrance gate 3, there may be a case where two cows are present on the weighing platform 2, and this case will be described with reference to FIG. 9.

When the preceding cow B passes through the exit gate 4 from the state shown in FIG. 8 (d) and the entrance gate 3 is switched to the above-mentioned entry permitting state, as shown in FIG. Cow C, who was in front of 3, enters weighing platform 2.

As shown in FIG. 9 (f), since the entrance gate 3 is opened as the cow C passes through the entrance gate 3, the following cow D connected immediately after the cow C Cow C
Then, it enters the weighing platform 2.

FIGS. 9 (g) and 9 (h) show that 2
This shows a state where the cows C and D are present.

FIG. 9 (R) shows that the preceding cow C
, Only the cow D is on the weighing platform 2.

Next, based on the reception information of the antenna 7 and the detection information of the second sensor 9, based on FIGS.
An algorithm for determining a valid data section by the valid data section determining means 11c will be described.

The cattle are weighed on the weighing platform 2 with the changes over time as shown in FIGS. 8 (a), (b), and the changes over time as shown in FIGS. 9 (e), (f),. Of the weighing value (the voltage after being smoothed by the low-pass filter 10b) output from the weighing platform 2 when walking and passing through, respectively, FIG.
11 and FIG. It should be noted that the time points indicated by reference numerals (a), (b),... In FIG. 10 indicate the chronological state of the progress of the cow in FIG. 8 (a), (b),.
· Corresponding to each, and in the same manner, reference numerals (e) in FIG.
(F)... The time points indicated by (f) and (f) respectively correspond to the elapse state of the progress state of the cow in FIG. In addition, M in FIGS. 10 and 11 indicates that the antenna 7 receives the individual number transmitted from the transmitting means T attached to the cow when the whole cow is at the entrance side on the weighing platform 2. N indicates the period during which the second sensor 9 is detecting a cow passing through the exit gate 4.

The voltages corresponding to the weighing values shown in FIGS. 10 and 11 are quantized by the A / D converter 10c as described above, and input to the arithmetic processing means 11 as weighing data. When the weighing data exceeds a threshold value which is slightly larger than the value of the weighing platform 2 solely by its own weight, the arithmetic processing means 11 starts storing the weighing data in the storage means 11a.

The data section setting means 11b identifies and stores the maximum value from the change in the weighing data. However, if the current maximum value _Pn has changed (increased or decreased) within 20% compared to the previous maximum value _Pn-1 , it is determined that the data is in a different section, and After clearing the data stored up to this point, the current maximum value _Pn is stored. Then, it is determined whether or not the stored maximum value is three or more. If the stored maximum value is three or more, the section from the first maximum value to the last maximum value is set to the same data section,
Divide the weighing data into sections. Therefore, FIGS. 10 and 11
In the case of the change over time of the weighing value as shown in FIG.
1, K2, K3, K4.

From the data sections divided as described above, the valid data section discriminating means 11c discriminates the valid data section based on the reception information of the antenna 7 and the detection information of the second sensor 9 as follows.

In the data section K1, only one cow B is on the weighing platform 2, that is, the antenna 7 receives the individual number of the cow B, and the second sensor 9 passes through the exit gate 4. Since a cow on the way is not detected, the valid data section determining means 11c determines this data section K1 as a valid data section.

In the data section K2, only one cow C is on the weighing platform 2, ie, the antenna 7 receives the individual number of the cow C, and the second sensor 9 passes through the exit gate 4. Since a cow on the way is not detected, the valid data section determining means 11c determines this data section K2 as a valid data section.

The data section K3 is a state in which two cows C and D are on the weighing platform 2, that is, the antenna 7 receives the individual number of the cow D, and the second sensor 9 detects the exit gate 4 , The valid data section determination unit 11c excludes the data section K3 from the valid data section.

In the data section K4, only one cow D is on the weighing platform 2 after the cow C has passed through the exit gate 4, that is, the antenna 7 receives the individual number of the cow D, In addition, since the second sensor 9 does not detect a cow passing through the exit gate 4, the valid data section determination unit 11c determines the data section K4 as a valid data section.

FIG. 12 shows two calves E and F, for example.
FIG. 13 shows a state in which the two calves E and F are walking side by side on the weighing platform 2 in a substantially side-by-side state. In this case, the weighing value output from the weighing platform 2 changes with time. The antenna 7 individually receives the individual numbers transmitted from the transmitting means T of each of the calves E and F. In FIG.
A period during which the antenna 7 is receiving the individual number transmitted from the transmitting means T attached to the calf E, and M2 is
The period during which the antenna 7 receives the individual number transmitted from the transmitting means T attached to the calf F is shown.

In the case where the weighing value changes over time as shown in FIG. 13, the data section setting means 11b divides the data section K5. This data section K5 includes two calves E and F
Is on the weighing platform 2, that is, the antenna 7 is
Since two different individual numbers of the calves E and F are simultaneously received, the valid data section determining means 11c
This data section K5 is excluded from the valid data section.

That is, the valid data section discriminating means 11c
As described above, when the second sensor 9 detects a cow passing through the exit gate 4 from the data section divided by the data section setting means 11b, and when the antenna 7 The data section when the number is being received at the same time is excluded, and the data section when the antenna 7 is receiving only one individual number is determined to be a valid data section.

The calculating means 11d calculates the average of the weighing data in the valid data section determined by the valid data section determining means 11c, and uses the average as the weight of the cow identified from the individual number received by the antenna 7. .

[Another Embodiment] Next, another embodiment will be described.

In the above embodiment, the entrance gate 3, the actuator 5 for opening and closing the entrance gate 3, and the actuator 5 for opening and closing the entrance gate 3 so as to guide only one cow to the weighing platform 2 are controlled. In a state where an actuator control unit S is provided to forcibly separate the cow and lead only one cow to the weighing platform 2, the effective data is obtained based on the reception information of the antenna 7 and the detection information of the second sensor 9. Although the case where the section discriminating means 11c is configured to discriminate a data section from a valid data section has been exemplified, instead of this, the entrance gate 3, the actuator 5, and the actuator control unit S are not provided. To
Based on the reception information of the antenna 7 and the detection information of the second sensor 9, the effective data section discriminating means 11c allows the cow to continuously walk and pass on the weighing platform 2 from the data section. A configuration may be adopted in which a data section in which a plurality of cows are present is excluded and the data section is determined as a valid data section.

In the above embodiment, the proximity sensor is used as the detecting means 9 for detecting a cow passing through the exit gate 4 of the weighing platform 2 while the cow pushes and opens the door body 4b.
Although the case where it provided and detected so that the door 4b opened more than a set value when passing through was illustrated, the kind of the sensor which comprises the detection means 9 does not matter, for example, It may be constituted by an optical sensor including a light receiver and a light emitter provided to detect a cow passing through the exit.

In the above embodiment, the case where the present invention is applied to a weighing device for cattle is illustrated. However, the present invention is not limited to this, and is also applied to a weighing device for various walking animals and further to a dynamic weighing device such as a vehicle. it can.

Incidentally, reference numerals are written in the claims for convenience of comparison with the drawings, but the present invention is not limited to the configuration of the attached drawings by the entry.

[Brief description of the drawings]

FIG. 1 is a side view showing an overall configuration of a cow weighing device according to an embodiment of the present invention.

FIG. 2 is a plan view showing the overall configuration of a cow weighing device.

FIG. 3 is a front view showing the overall configuration of the cow weighing device.

FIG. 4 is a plan view of the vicinity of an entrance gate in the cow weighing device.

FIG. 5 is a side view of the vicinity of the entrance gate in the cow measuring device.

FIG. 6 is a front view of the vicinity of the entrance gate in the cow measuring device.

FIG. 7 is a circuit block diagram of a measurement processing unit and its peripherals in the cow measurement device;

FIG. 8 is a diagram illustrating a change over time when a cow walks and passes on a weighing platform.

FIG. 9 is a diagram illustrating a change over time when a cow walks and passes on a weighing platform.

FIG. 10 is a graph showing a change over time in a weighed value, a period during which individual identification information is received, and a period during which a weighing object that is passing through an exit is detected.

FIG. 11 is a graph showing a change over time in a weighed value, a period during which individual identification information is received, and a period during which a weighing target that is passing through an exit is detected.

FIG. 12 is a diagram illustrating a change over time when a cow walks and passes on a weighing platform.

FIG. 13 is a graph showing a change over time of a weighed value, a period during which individual identification information is received, and a period during which a weighing object that is passing through an exit is detected.

[Explanation of symbols]

 2 Weighing table 7 Receiving means 9 Detecting means 11a Storage means 11b Data section setting means 11c Valid data section discriminating means 11d Computing means T Transmitting means

 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-2-107142 (JP, A) JP-A-4-84717 (JP, A) JP-A-4-84883 (JP, A) JP-A-1- 265835 (JP, A) Japanese Utility Model 2-60564 (JP, U)

Claims (1)

(57) [Claims] 1. A weighing platform (2), a receiving means (7) for receiving individual identification information transmitted from a transmitting means (T) attached to a weighing object, and the weighing platform (2). A storage unit (11a) for sequentially capturing and storing time-series data of weighing values when an object passes, and identifying a local maximum value from the time-series data and using the same section where a plurality of local maximum values within a predetermined range are continuous. A data section setting unit (11b) for dividing the time series data as a data section; a valid data section determination unit (11c) for determining a valid data section from the data section; A dynamic weighing device provided with a calculating means (11d) for calculating a static weight of the weighing target, wherein the receiving means (7) is arranged such that the whole of the weighing target is on the weighing table (2). When located on the inlet side, said transmitting means (T)
Detecting means (9) for detecting the object to be weighed while passing through the exit of the weighing platform (2), provided to receive the individual identification information transmitted from the weighing platform (2); ) Excludes a data section in which a plurality of weighing targets are located on the weighing platform (2) from the data section based on the reception information of the reception means (7) and the detection information of the detection means (9). A dynamic weighing device configured to determine the valid data section by using the method.