JPH1156121A - Winding and rewinding of vinyl film of vinyl house - Google Patents

Abstract

PROBLEM TO BE SOLVED: To dissolve problems or the like in which control previously predicting raise of temperature is impossible and occurrence of bound phenomenon is not avoidable and possibility causing high-temperature and low-temperature hindrance is high. SOLUTION: This method for winding or rewinding vinyl film comprises detecting temperature in a house 1 by utilizing a sensor 6 of the house 1 and stopping winding and rewinding action by judging whether the detected value is within the region of set temperature or not. The method comprises a winding operation for immediately winding a vinyl film provided in a state overlapped in a closing part until starting end of an opening part and making opening part openable toward the end of the opening part when it is judged that the detected value is close to the upper limit of set temperature and release of opening part is possible, and immediate rewinding operation for rewinding vinyl film which is positioned in opening part, bringing the vinyl film to starting end of opening part and enabling rewinding of the vinyl film toward the closing part when it is judged that the detected value is close to the lower limit of set temperature and closing of opening part is possible.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a method for winding and rewinding a vinyl film of a greenhouse.

[0002]

2. Description of the Related Art Conventionally, a method of winding and rewinding a vinyl film of a greenhouse (hereinafter referred to as a "house") on the basis of the relationship between the temperature in the house and the outside air temperature, or abnormal drop of the outside air temperature, etc. Are known. This conventional example will be described with reference to the chart of FIG. This example is on March 6, 1996 (hereafter, 3
/ 6 days. ), March 8, 1996 (hereinafter 3/8)
Sun), performed in a house in Okazaki City, Aichi Prefecture. To explain the outline, the chart shows the time on the horizontal axis and the temperature in the house on the vertical axis. It is shown as a closed setting (a) at 24.2 ° C and an open setting (b) at 25.8 ° C. This opening setting (b)
This is an opening setting in a situation where a vinyl film is located in a closing portion described later. In addition, in order to make it easy for a person skilled in the art, such as a person skilled in the art, to understand the figures, the measured values are slightly averaged, and the numerical values are shown in the figures (hereinafter the same). When the sensor detects the closing setting (a) and the opening setting (b), the vinyl film is wound or rewound to open and close the opening and maintain the house temperature at the set temperature. It has a configuration. In a normal house, a closed portion is provided below an opening provided in a valley, a side wall, or the like.
40mm is provided. ). Therefore, in order to open the opening, it is necessary to wind up the vinyl film of the closing portion.
In other words, even when the temperature in the house exceeds the set temperature range, the opening is not opened as long as the vinyl film is present in the closed portion, and the temperature in the house cannot be corrected.

In this experimental example, even if a signal is output at the opening setting (b) and the vinyl film is wound up, it takes time to wind up the vinyl film at the closed portion.
As shown in the chart, the temperature rise lasted for about 20 minutes, and then
After about 3 minutes, the peak was reached, and 3/6 days (c), 3 /
31.5 ° C., 30.8 ° C., respectively, as on day 8 (c ′)
The degree of house temperature is measured. Thus 31.5
If the temperature rises by about 30.8 ° C., the problem of high temperature damage tends to occur in the cultivated crop. Further, thereafter, the opening and the replacement of air proceed rapidly, resulting in a rapid temperature drop, and the temperature suddenly approaches the set temperature range as shown on the 3/6 (d) and 3/8 (d ') charts. And the temperature drops steeply. So-called figures (e)-(d), (e ')-
A bounce phenomenon as shown in (d ') occurs. Such a bouncing phenomenon also has an adverse effect on cultivated crops. Although not shown, if the temperature drops below the closing setting (a) of 24.2 ° C. and the temperature further drops, a problem of low-temperature failure (not shown) tends to occur.

Conventionally, in order to avoid such high-temperature / low-temperature damage, a method in which a producer winds and rewinds a vinyl film by intuition and manual work based on a detected value in a house, And a method of substantially fully automatic winding and rewinding.

[0005]

Among the conventional methods for winding and rewinding a vinyl film based on temperature control, the almost fully automatic method uses a valley gutter member, a side wall member or the like even if an opening signal is output. The vinyl film provided so as to overlap the closing portion is gradually wound up. Therefore, it takes time to wind and rewind the vinyl film in the closed section, and the opening of the open section is delayed, or the control is not performed in anticipation of the temperature rise, so that the occurrence of the bouncing phenomenon cannot be avoided. And the possibility that high-temperature / low-temperature failures occur is high.

In addition, in the above method, since the control is not performed in anticipation of the temperature rise in advance, the occurrence of a bound phenomenon cannot be avoided. Therefore, it is necessary to constantly monitor the method, and there is a problem that the operation is complicated.

[0007]

SUMMARY OF THE INVENTION The present invention detects a temperature in a house, and when the detected value is close to a set temperature within a set temperature range and it is determined that the opening can be opened, the inside of the house is determined. This is a method in which a signal is issued in advance and the winding operation of the vinyl film is performed because the temperature rise can be expected. Therefore, when the detected value reaches the upper limit of the set temperature range,
The vinyl film is located at the beginning of the opening, and the winding can be started immediately to open the opening. With this, the following configuration is adopted for the purpose of avoiding excessive rise in the temperature inside the house, maintaining the optimum temperature, simplifying the winding and rewinding of the vinyl film, and saving labor. adopt.

[0008] The first aspect of the present invention is to wind a vinyl film,
In a house provided with a closing portion that closes an opening and a valley portion, a side wall, and the like that is opened and closed by rewinding, a sensor that detects a temperature in the house is provided, and the temperature in the house is detected by the sensor. Winding of the vinyl film of the house that performs the operation of winding or rewinding the vinyl film based on the value,
In the rewinding method, when it is determined that the detected value is substantially close to the set temperature in the set temperature range and that the opening can be opened, the vinyl film provided so as to overlap with the closing portion is wound at a stretch. Winding and rewinding a vinyl film of a house, wherein a single winding operation is performed to a start end of the opening to reach a start end of the opening.

[0009]

Next, a preferred embodiment of the present invention will be described.

[0010] As shown in Fig. 4, the winding and rewinding of the vinyl film on the side wall of the house in Okazaki City, Aichi Prefecture on April 5, 1996 will be described. The inside temperature is displayed, and the set temperature is shown as a closed setting and an open setting in the chart.
The opening setting of this opening (this opening setting is the opening setting when the vinyl film is located in the opening) is 2
The temperature is set to 5 ° C. and the closing setting is set to 23 ° C. When the sensor detects this opening setting, the vinyl film located at the opening is wound up, and the temperature in the house is maintained in the set temperature range. As will be described later, in this example, if the temperature in the house rises, the detected value approaches the upper limit of the set temperature range, and the temperature rise can be predicted, and if it is determined that opening is possible, ( Therefore, for example, in the case of rainfall, ash fall, or the like, it is not determined that opening is possible.), And the vinyl film of the opening is wound up. Explaining this example based on April 5, 1996,
As shown by ○ (the drawing is shown with a cello-nomar), since the temperature in the house is near the set temperature and has been increasing since then, and there is no occurrence of abnormal rainfall, etc., an open signal is output once and the vinyl film is wound. As shown in the drawing, the vinyl film is located at the beginning of the opening at a temperature of 25 ° C. at about 8:10. In this example, since the temperature in the house is near the upper limit of the opening set temperature of the opening (it is out of the set temperature range), the opening signal is output twice and the opening is opened by 16 mm. However, because the winding operation is slightly delayed, the temperature in the house is out of the set temperature range, and the temperature in the house becomes approximately 26 ° C. After that, the opening signal is output three times, and the opening is opened 39 mm, the temperature immediately starts to drop, and the state returns to the set temperature range approximately 5 minutes later. In addition, even in the above-mentioned situation of approximately 26 ° C.,
Since the temperature rise was small and the time for the temperature rise was short, the bound phenomenon was not considered, and the adverse effect on the cultivated crops was small. This is because the rise in the temperature in the house varies depending on the cultivated crop, but usually, the temperature range from the set temperature range is approximately 1 ° C. to 2 ° C., and this approximately 26 ° C. is also included in the allowable range. Then, as shown at 8:29
The signal opens four times a minute and the signal is released 56mm,
The temperature rise in the house is avoided, and the temperature in the house is within the set temperature range. There are also changes in climatic conditions,
As described above, the temperature in the house drops due to the appearance of clouds or the amount of clouds, and the detected value approaches the lower limit of the set temperature. However, this temperature drop is within the set temperature range and is not so problematic. Thereafter, as the temperature outside the house increases sequentially, the temperature inside the house also increases. That is, as described above, the detection value is slightly increased due to the increase in the temperature in the house, so that the opening signal is output five or six times, the vinyl film is wound each time, and the vinyl film is opened as 62 mm and 72 mm. You. In the above-mentioned conditions (1) and (2), an abnormal increase in the temperature in the house is substantially avoided, and the temperature is substantially near the upper limit of the set temperature, and is substantially stable. Thereby, for example, since it has a favorable effect on the cultivated crop, does not deviate from the set temperature range, and there is no winding command, unnecessary turning on and off of switches is avoided. The avoidance of the unnecessary turning on and off of the switches includes, for example, a reduction in failure of the operating switches and a reduction in power consumption. Thereafter, as shown in a comprehensive manner, the opening / closing signal and the winding and rewinding of the vinyl film are repeated each time in accordance with the temperature in the house and the climatic conditions. Looking at the time, it is from around 9:25 to around 10:50. In this case, by a control method such as proportional control, proportional integral / differential control, in principle, winding and rewinding are repeated in small increments, and as a result, without departing from the set temperature range,
Normal temperature control is performed.

Although not shown, a sensor for rainfall or the like is provided, and when the sensor for rainfall or the like is activated, the opened vinyl film is closed (the side wall vinyl film may be open) and the opening is closed.

[0012]

An embodiment of the present invention will be described below with reference to the drawings.

Reference numeral 1 denotes a house.
The valley / sidewall vinyl film 111a that is wound or unwound through the winding and unwinding devices 2 and 3 on the side wall 112 and
112a are provided. By winding up the vinyl films 111a and 112a of the valleys and the side walls, the valleys 111 and the side walls 112 are respectively opened. However, the valley 111 is provided with a valley gutter member 4 (vinyl gutter, steel plate gutter, or the like), and the valley gutter member 4 is provided with a vinyl film 111a of the valley in an overlapping manner (in the overlap). This is referred to as a closed state. As a result, a closed portion 1a1 is formed in the valley 111. The side wall 112 is provided with a side wall member 5 (vinyl wall, steel plate wall, plate wall, or the like).
The side wall member 5 is provided so that the vinyl film 112a of the side wall overlaps. Thereby, this side wall 1
12 is provided with a closing portion 1a1. In addition, this closing portion 1a
The switches LS1 are provided at the bottoms 1a11 and 1b11 of the closing portions of the openings 1 and 1b1, and the switches LS2 are provided at the starting ends 1a2 and 1b2 of the openings 1a and 1b.
Switches LS3 are provided at the ends 1a3 and 1b3 of the openings in a and 1b, respectively. In the figure, 6 is a sensor such as a temperature sensor provided at one or several places in the house 1, and 7 is a control device for comparing a temperature detected by the sensor 6 with a set temperature to perform proportional control or proportional integral / differential control. Then, the opening signal output by the control device 7,
A command is given to the winding and rewinding devices 2 and 3 by the closing signal. The output signals of the winding and rewinding devices 2 and 3 are as follows.
It is transmitted to one or several winding and rewinding devices 2 and 3 installed on the valley 111 and the side wall 112, respectively, and the winding and rewinding devices 2 and 3 are rotated forward or backward for a predetermined time. .

In the figure, reference numeral 8 denotes a hoisting pipe.

[0015]

According to the present invention, the temperature in the house is detected, and when it is determined that the detected value is near the set temperature in the set temperature range and the opening can be opened, a signal is issued in advance. When the winding operation of the vinyl film is performed and the temperature in the house reaches the upper limit of the set temperature region, the opening can be already opened, and the opening is immediately opened to avoid a temperature rise. Therefore, there is a characteristic that the temperature in the house can be controlled appropriately for the cultivated crop, in other words, the temperature can be controlled near the set temperature range. In addition, there is a feature that it is possible to avoid the occurrence of a bouncing phenomenon or high-temperature / low-temperature damage, or to harvest high-yield and high-quality crops.

Further, the present invention has a configuration capable of avoiding occurrence of a bouncing phenomenon. Therefore, the number of switching ON / OFF decreases,
In addition, there is a feature that is useful for preventing failure of operation switches and the like.

[Brief description of the drawings]

FIG. 1 is a schematic view showing the general concept of the present invention.

FIG. 2 is a schematic diagram illustrating a relationship between a valley gutter member and a vinyl film in a valley.

FIG. 3 is a schematic diagram illustrating a relationship between a side wall member of a side wall and a vinyl film.

FIG. 4 is a diagram illustrating the relationship between the opening and closing of a vinyl film and the temperature in a house.

FIG. 5 is an enlarged view of a portion (1) in FIG. 4;

FIG. 6 is an enlarged view of a portion (2) in FIG. 4;

FIG. 7 is a diagram illustrating the relationship between the opening and closing of a conventional vinyl film and the temperature in a house.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 House 1a Opening 1a1 Closed part 1a11 Bottom of closed part 1a2 Opening end 1a3 Opening end 1b Opening 1b1 Closed part 1b11 Opened bottom 1b2 Opening end 1b3 Opening end 111a Valley 111a Valley Vinyl film of side wall 112 Side wall 112a Vinyl film of side wall 2 Winding and rewinding device 3 Winding and rewinding device 4 Valley part gutter member 5 Side wall member 6 Sensor 7 Controller 8 Winding pipe LS1 switch LS2 switch LS3 switch

Claims (4)

[Claims] 1. A vinyl house having an opening that is opened and closed by winding and rewinding a vinyl film, and a closing portion that closes a valley, a side wall, and the like, is provided with a sensor that detects a temperature in the green house. In the method for winding and rewinding a vinyl film of a greenhouse that performs the operation of winding or rewinding the vinyl film based on the detected value, the detected value is set. When it is determined that the opening can be opened near the substantially set temperature in the temperature region, the vinyl film provided so as to be superimposed on the closing portion is wound at a stretch to reach the beginning of the opening. A method of winding and rewinding a vinyl film of a greenhouse, wherein the winding operation is performed at a stretch up to the beginning of the opening. 2. The winding of a vinyl film of a greenhouse according to claim 1, wherein the start and end of the opening and the stop at the bottom of the closed portion are constituted by stopping means such as a switch, a microcomputer, and a sensor. Take and rewind method. 3. The winding and winding of a vinyl film of a greenhouse according to claim 1, wherein after reaching the starting end of the opening, winding and rewinding are performed in small increments using microcomputer control. Return method. 4. The method according to claim 1, wherein the control for opening and closing the opening is a control method such as proportional control, proportional integral / differential control, and the like.